CA1237578A - Drum type washing dryer - Google Patents
Drum type washing dryerInfo
- Publication number
- CA1237578A CA1237578A CA000454869A CA454869A CA1237578A CA 1237578 A CA1237578 A CA 1237578A CA 000454869 A CA000454869 A CA 000454869A CA 454869 A CA454869 A CA 454869A CA 1237578 A CA1237578 A CA 1237578A
- Authority
- CA
- Canada
- Prior art keywords
- lint
- filter
- drying drum
- laundry
- dried
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/22—Lint collecting arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
Abstract
Abstract A drum type laundry dryer has an outer frame, a drying drum rotatably supported by the outer frame and adapted to receive laundry to be dried, a fan for introducing air into the drying drum, a heater for heating air to be introduced into the drying drum, air outlet ports in the drying drum and a filter device adjacent to the air outlet ports. The filter device is formed by a net and a lint collector disposed in opposite relationship to the net. The lint collector is annular and spaced from the net a distance which is smaller in the inlet section of the lint collector than in an inner section thereof.
Description
123757~
Dr_m _ ~_lau__ry _ry~
Backqro_ ___f_the_Inve ti__ l. F1_l___f_the_I__ention The present invention relates to a drum type laundry dryer, and, more particularly, to a drum type laundry dryer having an improved lint collecting unit.
Dr_m _ ~_lau__ry _ry~
Backqro_ ___f_the_Inve ti__ l. F1_l___f_the_I__ention The present invention relates to a drum type laundry dryer, and, more particularly, to a drum type laundry dryer having an improved lint collecting unit.
2. Descri~tion of the Prior Art ______ _____________________ In this type of laundry dryer, it has been known that, as a filter for collecting lint contained in air discharged from a drying drum, a lint contained in air discharged from a drying drum, a lint receiver is provided around the outer periphery of the filter, as disclosed in, for example, Japanese Utility Model Publication 33886/72. However, the lint receiver fails to provide a high lint collecting efficiency.
Su_mary_of___e I__e _i__ It has been found that by providing a filter portion at a discharge port of the drying drum so that laundry to be dried moving around together with the rotation of the drying drum is brought into direct contact with the filter, the lint stuck to the filter portion is removed by the laundry to be dried.
An object of the present invention is to provide an improved drum type laundry dryer wherein such a lint removal phenomenon is utilized and, subsequently to the lint removal phenomenon, the lint is collected in the - filter portion and, furthermore, the collected lint is forced into a predetermined portion, whereby clogging of the filter portion is prevented and the lint is collected in a compressed condition to thereby assure that dried clothes are almost free from lint.
The present invention consists of a drum type laundry dryer including an outer frame, a drying drum rotatably supported by said outer frame and adapted to receive laundry to be dried, means for introducing air into said drying drum, means for heating the air to be introduced into said drying drum, an air outlet provided in said drying drum, and lint collecting means provided adjacent to said air outlet, wherein said lint collecting means comprises filter means for capturing lint separated from laundry being dried in said drying drum, means for establishing different filter areas on said filter means and a lint collector for receiving lint captured by said filter means, said filter means including a net-like filter section including a radially inner filter area adapted to be exposed to the laundry in said drying drum, said establishing means being disposed in closely spaced, opposed relationship to the portion of said net-like filter section radially outward of said radially inner filter area and operating to assure that, during operation of the laundry dryer, said portion of said net-like filter section has a radially outer area adapted not to be contacted by the laundry being dried and an intermediate filter area disposed between said radially inner and outer filter areas and adapted to be contacted by wet laundry being dried but not contacted by the laundry when the laundry has been substantially dried in said drying drum.
The invention will be described by way of example with reference to the accompanying drawings.
Brief Description of the Drawings ___. __ ______________ _ Fig. 1 is a front elevational view of a drum type laundry dryer embodying the present invention;
Fig. 2 is a cross-sectional view taken along the line II-II in Fig. l;
Fig. 3 is an enlarged cross-sectional view of a lint collecting unit and its associated parts;
Fig. 4 is a graph showing production of lint, such as waste threads produced in the drying operation, and intrusion of the clothes into a lint collector;
Fig. 5 is a fragmentary cross-sectional view of the lint collector showing the intrusion of the clothes into the lint collector;
Figs. 6A and 6B are fragmentary cross-sectional views of the lint collector showing the intrusions of the wet and dry clothes into the lint collector, respectively;
Figs. 7A-1 to 7D are partial cross-sectional views of the lint collector illustrating respective steps of lint collection; and Figs. 8 and 9 show another embodiment of the present invention, Fig. 8 being a partially sectional front elevation of a drum type laundry dryer and Fig. 9 being a cross-sectional view taken along the line IX-IX in Fig. 8.
Detailed Descr~E~on of the Preferred Embodiments _ _ __ _ ___ ____ _ ___ ____________________ Referring to Figs. 1 and 2, an outer frame 1 is comprised of an outer frame front panel 2, an outer frame side panel 3 and an outer frame bottom panel 4 which are fixedly secured together by spot welding or the like.
A rear cover 5 is mounted on a back face of the outer frame 1 by fastening means such as screws 6.
A drying drum 7 which defines therein a laundry drying chamber 8 is rotatably supported within the outer frame 1.
The drying drum 7 is rotated by a motor 10 through a belt 9.
A heater 11 for heating air to be fed into the drying drum 7 is provided in front of the drying drum 7. A drive pulley 12 is mounted on a rotary shaft 27 of the motor 10.
The belt 9 extends around the drive pulley 12 and the drying drum 7.
An air circulating fan 13 and a cooling air fan 14 are mounted on the opposed ends of the motor 10, respectively.
A motor receiving chamber 16 for receiving therein the motor 10 and the cooling air fan 14 is defined by a partitioning wall member 15.
A supporting member 17 for rotatably supporting, together with a shaft 38, a rear portion of the drying drum 7 through felts cooperates with the rear cover 5 to define a circulation duct 18.
A box-shaped water reservoir 19 provided under the outer frame 1 serves to receive water produced in the outer frame 1 and flowing downwardly therefrom. The water reservoir 19 cooperates with the outer frame bottom panel 4 to define a cooling duct 21. A drain 23 serves to discharge therethrough the water collected in the water reservoir 19.
A cooling air guide member 25 is provided such that a cooling air outlet 26 is formed between the guide member 25 and the rear cover 5. The cooling duct 21 is communicated with the motor receiving chamber 16 through a communication port 28 formed in the outer frame bottom panel 4.
A door 29 is supported by the front face of the outer frame 1 and adapted to open and close a cloth throwing opening 30 of the drying drum 7. A fan protector 31 is provided in front of a cooling air inlet 32.
The above-described heater 11 is mounted on a second supporting member 33 for rotatably supporting a front portion of the drying drum 7 through felts. Leg members 34 are integrally connected to the water reservoir 19.
~237578 A timer 35 and a change-over switch 36 are mounted together on the front Eace of the outer frame 1.
A lint collecting unit will now be described. As shown in Fig. 3, the shaft 38 is fixed to the center of the rear wall of the drying drum 7 by shaft fastening members 39 and 40. The rear wall of the drying drum 7 is outwardly depressed to form a relatively large circular recess in the wall which has an annular circumference about the shaft 38. In the bottom face of the recess, lo there are formed a number of air outlet ports 7a.
An annular filter device 41 has a filter portion which is formed by providing an annular net 44 between a boss 42 and an outer circumferential ring 43. The net 44 is made of polyester and is of 100 to 350 meshes. The net 44 is attached by melt-bonding between the outer periphery of the boss 42 and the inner periphery of the outer circum-ferential ring 43, the boss 42 and the ring 43 being made of a synthetic resin.
The filter device 41 is mounted on the drying drum 7 by mounting the boss 42 over the shaft 38 and the shaft fastening member 39 and fastening the outer circumferential ring 43 to the drying drum 7 by means of screws or the like.
Since all the air outlet ports 7a are covered by the filter device 41 located inside the drying drum 7, lint such as waste threads and fine fibers separated from washed clothes to be dried are trapped or collected by the filter device 41 and prevented from being discharged out of the drum through the air outlet ports 7a.
On the front side of the filter device 41, there is provided an annular lint collector 45 which is detachably mounted on the inside of the drying drum 7. The lint collector 45 is formed by an annular front portion 46 and an annular rear portion 47.
123757~3 The front portion 46 is composed of a cylindrical outer peripheral wall section 46a and an integral annular front wall section 46b which has a step offset portion 46c offset toward the filter 41. The offset portion has a circular peripheral edge defining circular opening 46d.
The portions 46 and 46c are contiguous with the lint collector 45 and are disposed radially inwardly thereof.
The diameter of the opening 46d is smaller than the outer diameter of the net 44 and is selected such that, when wet clothes lO0 moving around within the drying drum 7 intrude into a gap defined between the net 44 and the front portion 46b, there is left with the net 44 a non-contact net surface area 44a which is never contacted by the clothes to be dried and which is located in the vicinity of the outer peripheral edge of the net 44.
The rear portion 47 of the dust collector has an outer peripheral portion inserted into the outer peripheral wall section 46a of the front portion 46 and is detachably mounted on the front portion 46 to complete the dust collector 45.
The dust collector 45 is detachably mounted on the inside of the drying drum 7 by inserting the outer peripheral wall section 46a of the front portion 46 into the outer circumferential ring 43 of the filter device 41.
With respect to dimension of the filter device 41, the outer diameter of the net 44 is 180 mm, whereas with respect to the lint collector 45, the outer diameter of the outer peripheral wall section 46a of the front portion 46 is 240 mm, the offset portion 46c has a width of 15 mm and an offset of from 5 to 10 mm and the outer diameter of the opening 46d is 124 mm. The distance between the net 44 of the filter device 41 and the front wall 46b of the front section 46 of the dust collector 45 is selected to be in the range of from 8 mm to 14 mm as measured at the offset portion.
12;~ ~8 The front portion 46 and the rear portion 47 are made of a synthetic resin.
In operation, the air which has absorbed moisture from the materials to be dried, i.e., the clothes in the laundry drying chamber 8 of the drying drum 7, and which is at a high humidity and still at a high temperature is sucked by the air circulating fan 13 and introduced into the circu-lation duct 18. After the air is cooled and dehydrated in the circulation duct 18, the air flows through the air circulating fan 13 into the space 37 defined between the drying drum 7 and the outer frame 1. The air is further cooled in the space 37 and is further dehydrated therein.
Thereafter, the air is heated by the heater 11 and introduced again into the drum 7 to absorb the moisture contained in the clothes therein. The operation is repeated to proceed with the drying of washed clothes.
As shown by the solid line in the graph in Fig. 4, àlmost no lint such as waste threads from the clothes are produced in the initial stage of drying and a large amount of lint is produced at or near the final stage of drying.
Intrusion of the clothes to be dried moving around within the drying drum 7, into the lint collector 45, as indicated by L in Fig. 5, is maximum when the clothes 100 to be dried are wet at the initial stage of drying and is minimum when the clothes 100 to be dried have been dried at the final stage of drying, as indicated by the dotted line in the graph shown in Fig. 4.
Due to the difference in the intrusion of the clothes 100 to be dried into the lint collector 45, the net 44 of the filter device is, as shown in Figs. 6A and 6B, caused to have three areas, an inner contacting net area 44c with which the clothes 100 to be dried are brought into contact during operation of the dryer, an outer non-contact net area 44a which is not contacted by the clothes 100 to be dried during the operation and an intermediate contacting 123757~
net area 44b which is located between the contacting net area 44c and the non-contact net area 44a. In the inter-mediate contact net area 44b, the clothes are brought into contact with the net when the clothes 100 to be dried are in wet condition but, the clothes 100 do not contact with the net when the clothes have been dried.
In this case, this is because the offset portion 46c of the dust collector 45 is provided in opposite relation-ship to the filter device 41 and serves as means for establishing different filter areas.
Fig. 6A illustrates a state in which wet clothes are in contact with the intermediate net area 44b while Fig. 6B
shows a state in which dried clothes are not in contact with the intermediate net area 44b.
The lint such as waste threads separated during drying from the material or clothes to be dried are entrained by the flow of circulated drying air to be discharged through the air outlet ports 7a of the drying drum 7 and are carried by the air flow to the filter device 41 whereupon the lint is captured or collected by the net 44.
The clothes 100 to be dried are brought into contact with the contacting net area 44c of the net 44, so that the lint stuck to this net area 44c is removed therefrom.
Accordingly, the lint such as waste threads is not deposited on the contacting net area 44c whereby this net area is kept free from clogging to assure a constant rate of air flow through the net 44.
On the other hand, since the clothes 100 to be dried do not contact the non-contact area 44a of the net 44, the lint such as waste threads can be collected thereon. In the intermediate net area 44b, the clothes 100 will not be contacted with the net 44 in the final drying stage when a great amount of the lint is generated. Thus, the lint can be collected on the intermediate net area 44b.
1~37578 g The operation of the lint collector relative to the lapse of drying time will now be described with reference to Figs.7A-1 to 7D.
Figs. 7A-1 and 7A-2 show a first drying operation, Fig. 7A-1 showing an initial drying stage and Fig. 7A-2 a final drying stage. Lint 101 which is produced in the first drying operation is collected on the intermediate net area 44b and the non-contact net area 44a to form a doughtnutlike deposit.
When a second drying operation is carried out, wet clothes 100 stage intrude into the inside of the lint collector 45 at the initial drying stage, as shown in Fig.
7B-l, to thereby peel apart from the intermediate net area 44b the deposit of the lint 101 collecting during the first drying operation and stuck to the intermediate net area 44b. Then, the lint is pushed radially outwardly. As a result, the intermediate net area 44b is cleaned.
Under this condition, the drying is continued. At the final drying stage shown in Fig. 7B-2, the lint 102 such as waste threads separated from the clothes 100 to be dried is collected on the intermediate net area 44b into which the clothes 100 do not intrude and thus do not contact with the net in this area 44b.
Under this condition, when a third drying operation is started, lint 103 is similarly collected throughout the third drying operation from the initial drying stage thereof shown in Fig. 7C-l to the final drying stage shown in Fig. 7C-2.
When such operations are repeated in this manner, deposits of lint are pushed into the dust collector 45 one after another. As a result, the deposits of lint are collected in the form of a laminated mass of lint 110, as shown in Fig. 7D.
Since the offset portion 46c is formed in the front wall 46b of the front portion 46 of the lint collector 45 1~7~q8 so that, when the lint such as waste threads stuck to the intermediate net area 44b is pushed radially outwardly into the dust collector 45, the lint is out of contact with the front wall 46b, the lint can be pushed radially outwardly by a slight force and can also be prevented from moving back, radially inwardly. Thus, a large amount of lint can be collected until the lint collector 45 is fully filled with the lint.
As described above, since an automatic lint removal is attained in the contact net area 44c during drying operations, there is no clogging in the contact net area 44c. It is, therefore, possible to assure a constant rate of air flow through the dryer.
The lint is collected on the intermediate net area 44b and the non-contact net area 44a of the net 44 and is received in the lint collector 45. Therefore, the removed lint is not mixed again with clothes to be dried. It is possible to obtain dried clothes which are almost free from lint.
When cleaning of the lint collector 45 is required, it i5 sufficient to pick up and waste the laminar mass 110 of lint by removing the lint collector 45 from the drying drum 7 and separating the front portion 46 and the rear portion 47 from each other. Thus, the cleaning of the lint collector 45 can readily be conducted.
The rear portion 47 is not essential and a lint collector 45 consisting only of the front portion 46 can be used substantially in the same manner provided that the filter device 41 is made detachable from the drying drum 7 and removable together with the front portion 46 when a cleaning is conducted.
Another embodiment of the invention will now be described with reference to Figs. 8 and 9. A cloth-drying chamber 8 is defined by a drying drum 7 and a drum front portion supporting member 33. An air outlet port is formed ~237~
in the drum front portion supporting member 33. A filter 48 is provided in the air outlet port. A lint collector 49 is provided below the filter 48.
The lint collector 49 is divided into an upper portion 50 and a lower portion 51. In the same manner as in the foregoing embodiment, the net surface of the filter 48 is divided into a contact net area, an intermediate net area and a non-contact net area. The lower portion 51 is of the drawer type which may be drawn from outside.
The lint collector 49 and the filter 48 may alternatively be provided on the door for clothes.
It is not essential that the net of the filter device extends throughout the filter device. Radial or ring-like ribs that are not porous may alternatively be provided in a part of the filter device.
As described above, the lint collecting means of the laundry dryer according to the present invention comprises filter means for capturing lint separated from laundry to be dried in said drying drum, means disposed in opposite relationship to said filter means for establishing different filter areas on said filter means and a lint collector for receiving lint captured by said filter means, said establishing means being operative to assure that, during operation of said washing dryer, said filter means has a net-like contact filter area which is disposed adjacent to at least a part of the inner periphery of said filter means and is adapted to be contacted by the laundry being dried, a net-like non-contact filter area which is disposed adjacent to the outer periphery of said filter means and is adapted not to be contacted by the laundry being dried, and a net-like intermediate filter area which is disposed between said contact and non-contact filter areas and is adapted to be contacted by wet laundry being dried but not contacted by the laundry when it has been substantially dried in the drying drum. Thus, the lint 1~37S~
adhered to the contact filter area can be peeled off away from the filter means by the laundry being dried in the drying drum and moving around therein. The filter means, therefore, can be automatically cleaned. The lint removed from the contact filter area can then be forced by the laundry into the lint collector and prevented from being moved back into the laundry moving around in the drying drum. Thus, the present invention advantageously assures that dried laundry is almost free from lint.
Su_mary_of___e I__e _i__ It has been found that by providing a filter portion at a discharge port of the drying drum so that laundry to be dried moving around together with the rotation of the drying drum is brought into direct contact with the filter, the lint stuck to the filter portion is removed by the laundry to be dried.
An object of the present invention is to provide an improved drum type laundry dryer wherein such a lint removal phenomenon is utilized and, subsequently to the lint removal phenomenon, the lint is collected in the - filter portion and, furthermore, the collected lint is forced into a predetermined portion, whereby clogging of the filter portion is prevented and the lint is collected in a compressed condition to thereby assure that dried clothes are almost free from lint.
The present invention consists of a drum type laundry dryer including an outer frame, a drying drum rotatably supported by said outer frame and adapted to receive laundry to be dried, means for introducing air into said drying drum, means for heating the air to be introduced into said drying drum, an air outlet provided in said drying drum, and lint collecting means provided adjacent to said air outlet, wherein said lint collecting means comprises filter means for capturing lint separated from laundry being dried in said drying drum, means for establishing different filter areas on said filter means and a lint collector for receiving lint captured by said filter means, said filter means including a net-like filter section including a radially inner filter area adapted to be exposed to the laundry in said drying drum, said establishing means being disposed in closely spaced, opposed relationship to the portion of said net-like filter section radially outward of said radially inner filter area and operating to assure that, during operation of the laundry dryer, said portion of said net-like filter section has a radially outer area adapted not to be contacted by the laundry being dried and an intermediate filter area disposed between said radially inner and outer filter areas and adapted to be contacted by wet laundry being dried but not contacted by the laundry when the laundry has been substantially dried in said drying drum.
The invention will be described by way of example with reference to the accompanying drawings.
Brief Description of the Drawings ___. __ ______________ _ Fig. 1 is a front elevational view of a drum type laundry dryer embodying the present invention;
Fig. 2 is a cross-sectional view taken along the line II-II in Fig. l;
Fig. 3 is an enlarged cross-sectional view of a lint collecting unit and its associated parts;
Fig. 4 is a graph showing production of lint, such as waste threads produced in the drying operation, and intrusion of the clothes into a lint collector;
Fig. 5 is a fragmentary cross-sectional view of the lint collector showing the intrusion of the clothes into the lint collector;
Figs. 6A and 6B are fragmentary cross-sectional views of the lint collector showing the intrusions of the wet and dry clothes into the lint collector, respectively;
Figs. 7A-1 to 7D are partial cross-sectional views of the lint collector illustrating respective steps of lint collection; and Figs. 8 and 9 show another embodiment of the present invention, Fig. 8 being a partially sectional front elevation of a drum type laundry dryer and Fig. 9 being a cross-sectional view taken along the line IX-IX in Fig. 8.
Detailed Descr~E~on of the Preferred Embodiments _ _ __ _ ___ ____ _ ___ ____________________ Referring to Figs. 1 and 2, an outer frame 1 is comprised of an outer frame front panel 2, an outer frame side panel 3 and an outer frame bottom panel 4 which are fixedly secured together by spot welding or the like.
A rear cover 5 is mounted on a back face of the outer frame 1 by fastening means such as screws 6.
A drying drum 7 which defines therein a laundry drying chamber 8 is rotatably supported within the outer frame 1.
The drying drum 7 is rotated by a motor 10 through a belt 9.
A heater 11 for heating air to be fed into the drying drum 7 is provided in front of the drying drum 7. A drive pulley 12 is mounted on a rotary shaft 27 of the motor 10.
The belt 9 extends around the drive pulley 12 and the drying drum 7.
An air circulating fan 13 and a cooling air fan 14 are mounted on the opposed ends of the motor 10, respectively.
A motor receiving chamber 16 for receiving therein the motor 10 and the cooling air fan 14 is defined by a partitioning wall member 15.
A supporting member 17 for rotatably supporting, together with a shaft 38, a rear portion of the drying drum 7 through felts cooperates with the rear cover 5 to define a circulation duct 18.
A box-shaped water reservoir 19 provided under the outer frame 1 serves to receive water produced in the outer frame 1 and flowing downwardly therefrom. The water reservoir 19 cooperates with the outer frame bottom panel 4 to define a cooling duct 21. A drain 23 serves to discharge therethrough the water collected in the water reservoir 19.
A cooling air guide member 25 is provided such that a cooling air outlet 26 is formed between the guide member 25 and the rear cover 5. The cooling duct 21 is communicated with the motor receiving chamber 16 through a communication port 28 formed in the outer frame bottom panel 4.
A door 29 is supported by the front face of the outer frame 1 and adapted to open and close a cloth throwing opening 30 of the drying drum 7. A fan protector 31 is provided in front of a cooling air inlet 32.
The above-described heater 11 is mounted on a second supporting member 33 for rotatably supporting a front portion of the drying drum 7 through felts. Leg members 34 are integrally connected to the water reservoir 19.
~237578 A timer 35 and a change-over switch 36 are mounted together on the front Eace of the outer frame 1.
A lint collecting unit will now be described. As shown in Fig. 3, the shaft 38 is fixed to the center of the rear wall of the drying drum 7 by shaft fastening members 39 and 40. The rear wall of the drying drum 7 is outwardly depressed to form a relatively large circular recess in the wall which has an annular circumference about the shaft 38. In the bottom face of the recess, lo there are formed a number of air outlet ports 7a.
An annular filter device 41 has a filter portion which is formed by providing an annular net 44 between a boss 42 and an outer circumferential ring 43. The net 44 is made of polyester and is of 100 to 350 meshes. The net 44 is attached by melt-bonding between the outer periphery of the boss 42 and the inner periphery of the outer circum-ferential ring 43, the boss 42 and the ring 43 being made of a synthetic resin.
The filter device 41 is mounted on the drying drum 7 by mounting the boss 42 over the shaft 38 and the shaft fastening member 39 and fastening the outer circumferential ring 43 to the drying drum 7 by means of screws or the like.
Since all the air outlet ports 7a are covered by the filter device 41 located inside the drying drum 7, lint such as waste threads and fine fibers separated from washed clothes to be dried are trapped or collected by the filter device 41 and prevented from being discharged out of the drum through the air outlet ports 7a.
On the front side of the filter device 41, there is provided an annular lint collector 45 which is detachably mounted on the inside of the drying drum 7. The lint collector 45 is formed by an annular front portion 46 and an annular rear portion 47.
123757~3 The front portion 46 is composed of a cylindrical outer peripheral wall section 46a and an integral annular front wall section 46b which has a step offset portion 46c offset toward the filter 41. The offset portion has a circular peripheral edge defining circular opening 46d.
The portions 46 and 46c are contiguous with the lint collector 45 and are disposed radially inwardly thereof.
The diameter of the opening 46d is smaller than the outer diameter of the net 44 and is selected such that, when wet clothes lO0 moving around within the drying drum 7 intrude into a gap defined between the net 44 and the front portion 46b, there is left with the net 44 a non-contact net surface area 44a which is never contacted by the clothes to be dried and which is located in the vicinity of the outer peripheral edge of the net 44.
The rear portion 47 of the dust collector has an outer peripheral portion inserted into the outer peripheral wall section 46a of the front portion 46 and is detachably mounted on the front portion 46 to complete the dust collector 45.
The dust collector 45 is detachably mounted on the inside of the drying drum 7 by inserting the outer peripheral wall section 46a of the front portion 46 into the outer circumferential ring 43 of the filter device 41.
With respect to dimension of the filter device 41, the outer diameter of the net 44 is 180 mm, whereas with respect to the lint collector 45, the outer diameter of the outer peripheral wall section 46a of the front portion 46 is 240 mm, the offset portion 46c has a width of 15 mm and an offset of from 5 to 10 mm and the outer diameter of the opening 46d is 124 mm. The distance between the net 44 of the filter device 41 and the front wall 46b of the front section 46 of the dust collector 45 is selected to be in the range of from 8 mm to 14 mm as measured at the offset portion.
12;~ ~8 The front portion 46 and the rear portion 47 are made of a synthetic resin.
In operation, the air which has absorbed moisture from the materials to be dried, i.e., the clothes in the laundry drying chamber 8 of the drying drum 7, and which is at a high humidity and still at a high temperature is sucked by the air circulating fan 13 and introduced into the circu-lation duct 18. After the air is cooled and dehydrated in the circulation duct 18, the air flows through the air circulating fan 13 into the space 37 defined between the drying drum 7 and the outer frame 1. The air is further cooled in the space 37 and is further dehydrated therein.
Thereafter, the air is heated by the heater 11 and introduced again into the drum 7 to absorb the moisture contained in the clothes therein. The operation is repeated to proceed with the drying of washed clothes.
As shown by the solid line in the graph in Fig. 4, àlmost no lint such as waste threads from the clothes are produced in the initial stage of drying and a large amount of lint is produced at or near the final stage of drying.
Intrusion of the clothes to be dried moving around within the drying drum 7, into the lint collector 45, as indicated by L in Fig. 5, is maximum when the clothes 100 to be dried are wet at the initial stage of drying and is minimum when the clothes 100 to be dried have been dried at the final stage of drying, as indicated by the dotted line in the graph shown in Fig. 4.
Due to the difference in the intrusion of the clothes 100 to be dried into the lint collector 45, the net 44 of the filter device is, as shown in Figs. 6A and 6B, caused to have three areas, an inner contacting net area 44c with which the clothes 100 to be dried are brought into contact during operation of the dryer, an outer non-contact net area 44a which is not contacted by the clothes 100 to be dried during the operation and an intermediate contacting 123757~
net area 44b which is located between the contacting net area 44c and the non-contact net area 44a. In the inter-mediate contact net area 44b, the clothes are brought into contact with the net when the clothes 100 to be dried are in wet condition but, the clothes 100 do not contact with the net when the clothes have been dried.
In this case, this is because the offset portion 46c of the dust collector 45 is provided in opposite relation-ship to the filter device 41 and serves as means for establishing different filter areas.
Fig. 6A illustrates a state in which wet clothes are in contact with the intermediate net area 44b while Fig. 6B
shows a state in which dried clothes are not in contact with the intermediate net area 44b.
The lint such as waste threads separated during drying from the material or clothes to be dried are entrained by the flow of circulated drying air to be discharged through the air outlet ports 7a of the drying drum 7 and are carried by the air flow to the filter device 41 whereupon the lint is captured or collected by the net 44.
The clothes 100 to be dried are brought into contact with the contacting net area 44c of the net 44, so that the lint stuck to this net area 44c is removed therefrom.
Accordingly, the lint such as waste threads is not deposited on the contacting net area 44c whereby this net area is kept free from clogging to assure a constant rate of air flow through the net 44.
On the other hand, since the clothes 100 to be dried do not contact the non-contact area 44a of the net 44, the lint such as waste threads can be collected thereon. In the intermediate net area 44b, the clothes 100 will not be contacted with the net 44 in the final drying stage when a great amount of the lint is generated. Thus, the lint can be collected on the intermediate net area 44b.
1~37578 g The operation of the lint collector relative to the lapse of drying time will now be described with reference to Figs.7A-1 to 7D.
Figs. 7A-1 and 7A-2 show a first drying operation, Fig. 7A-1 showing an initial drying stage and Fig. 7A-2 a final drying stage. Lint 101 which is produced in the first drying operation is collected on the intermediate net area 44b and the non-contact net area 44a to form a doughtnutlike deposit.
When a second drying operation is carried out, wet clothes 100 stage intrude into the inside of the lint collector 45 at the initial drying stage, as shown in Fig.
7B-l, to thereby peel apart from the intermediate net area 44b the deposit of the lint 101 collecting during the first drying operation and stuck to the intermediate net area 44b. Then, the lint is pushed radially outwardly. As a result, the intermediate net area 44b is cleaned.
Under this condition, the drying is continued. At the final drying stage shown in Fig. 7B-2, the lint 102 such as waste threads separated from the clothes 100 to be dried is collected on the intermediate net area 44b into which the clothes 100 do not intrude and thus do not contact with the net in this area 44b.
Under this condition, when a third drying operation is started, lint 103 is similarly collected throughout the third drying operation from the initial drying stage thereof shown in Fig. 7C-l to the final drying stage shown in Fig. 7C-2.
When such operations are repeated in this manner, deposits of lint are pushed into the dust collector 45 one after another. As a result, the deposits of lint are collected in the form of a laminated mass of lint 110, as shown in Fig. 7D.
Since the offset portion 46c is formed in the front wall 46b of the front portion 46 of the lint collector 45 1~7~q8 so that, when the lint such as waste threads stuck to the intermediate net area 44b is pushed radially outwardly into the dust collector 45, the lint is out of contact with the front wall 46b, the lint can be pushed radially outwardly by a slight force and can also be prevented from moving back, radially inwardly. Thus, a large amount of lint can be collected until the lint collector 45 is fully filled with the lint.
As described above, since an automatic lint removal is attained in the contact net area 44c during drying operations, there is no clogging in the contact net area 44c. It is, therefore, possible to assure a constant rate of air flow through the dryer.
The lint is collected on the intermediate net area 44b and the non-contact net area 44a of the net 44 and is received in the lint collector 45. Therefore, the removed lint is not mixed again with clothes to be dried. It is possible to obtain dried clothes which are almost free from lint.
When cleaning of the lint collector 45 is required, it i5 sufficient to pick up and waste the laminar mass 110 of lint by removing the lint collector 45 from the drying drum 7 and separating the front portion 46 and the rear portion 47 from each other. Thus, the cleaning of the lint collector 45 can readily be conducted.
The rear portion 47 is not essential and a lint collector 45 consisting only of the front portion 46 can be used substantially in the same manner provided that the filter device 41 is made detachable from the drying drum 7 and removable together with the front portion 46 when a cleaning is conducted.
Another embodiment of the invention will now be described with reference to Figs. 8 and 9. A cloth-drying chamber 8 is defined by a drying drum 7 and a drum front portion supporting member 33. An air outlet port is formed ~237~
in the drum front portion supporting member 33. A filter 48 is provided in the air outlet port. A lint collector 49 is provided below the filter 48.
The lint collector 49 is divided into an upper portion 50 and a lower portion 51. In the same manner as in the foregoing embodiment, the net surface of the filter 48 is divided into a contact net area, an intermediate net area and a non-contact net area. The lower portion 51 is of the drawer type which may be drawn from outside.
The lint collector 49 and the filter 48 may alternatively be provided on the door for clothes.
It is not essential that the net of the filter device extends throughout the filter device. Radial or ring-like ribs that are not porous may alternatively be provided in a part of the filter device.
As described above, the lint collecting means of the laundry dryer according to the present invention comprises filter means for capturing lint separated from laundry to be dried in said drying drum, means disposed in opposite relationship to said filter means for establishing different filter areas on said filter means and a lint collector for receiving lint captured by said filter means, said establishing means being operative to assure that, during operation of said washing dryer, said filter means has a net-like contact filter area which is disposed adjacent to at least a part of the inner periphery of said filter means and is adapted to be contacted by the laundry being dried, a net-like non-contact filter area which is disposed adjacent to the outer periphery of said filter means and is adapted not to be contacted by the laundry being dried, and a net-like intermediate filter area which is disposed between said contact and non-contact filter areas and is adapted to be contacted by wet laundry being dried but not contacted by the laundry when it has been substantially dried in the drying drum. Thus, the lint 1~37S~
adhered to the contact filter area can be peeled off away from the filter means by the laundry being dried in the drying drum and moving around therein. The filter means, therefore, can be automatically cleaned. The lint removed from the contact filter area can then be forced by the laundry into the lint collector and prevented from being moved back into the laundry moving around in the drying drum. Thus, the present invention advantageously assures that dried laundry is almost free from lint.
Claims (8)
1. A drum type laundry dryer including an outer frame, a drying drum rotatably supported by said outer frame and adapted to receive laundry to be dried, means for introducing air into said drying drum, means for heating the air to be introduced into said drying drum, an air outlet provided in said drying drum, and lint collecting means provided adjacent to said air outlet, wherein said lint collecting means comprises filter means for capturing lint separated from laundry being dried in said drying drum, means for establishing different filter areas on said filter means and a lint collector for receiving lint captured by said filter means, said filter means including a net-like filter section including a radially inner filter area adapted to be exposed to the laundry in said drying drum, said establishing means being disposed in closely spaced, opposed relationship to the portion of said net-like filter section radially outward of said radially inner filter area and operating to assure that, during operation of the laundry dryer, said portion of said net-like filter section has a radially outer area adapted not to be contacted by the laundry being dried and an intermediate filter area disposed between said radially inner and outer filter areas and adapted to be contacted by wet laundry being dried but not contacted by the laundry when the laundry has been substantially dried in said drying drum.
2. A drum type laundry dryer according to claim 1, wherein said filter means further includes a central boss section and an outer peripheral ring section, said radially inner and outer filter areas and said intermediate filter area being disposed between said central boss and outer peripheral ring sections.
3. A drum type laundry dryer according to claim 1, wherein said establishing means is contiguous with said lint collector and disposed inwardly of said lint collector.
4. A drum type laundry dryer according to claim 3, wherein said establishing means and said lint collector are integral and are detachably connected to said filter means.
5. A drum type laundry dryer according to claim 3, wherein said establishing means and said lint collector are detachable one from the other and said lint collector is movable outwardly.
6. A drum type laundry dryer according to claim 1, wherein the distance between said filter means and said establishing means is smaller than the distance between said filter means and said lint collector.
7. A drum type laundry dryer including an outer frame, a drying drum rotatably supported by said outer frame and adapted to receive laundry to be dried, means for introducing air into said drying drum, means for heating the air to be introduced into said drying drum, an air outlet provided in said drying drum, and lint collecting means provided adjacent to said air outlet, wherein said lint collecting means comprises a filter means for capturing lint separated from laundry to be dried in said drying drum and a lint collector disposed upstream of said filter means in closely spaced, opposed relationship thereto, said filter means being adapted to be exposed to the laundry in said drying drum except for the section of said filter means covered by said lint collector, the spacing between said lint collector and said filter means being smaller in an inlet portion of said lint collector than in the interior thereof.
8. A drum type laundry dryer including an outer frame, a drying drum rotatably mounted in said outer frame and adapted to receive laundry to be dried, means for introducing air into said drying drum, means for heating the air to be introduced into said drying drum, an air outlet provided in said drying drum, and lint collecting means adjacent to said air outlet, wherein said lint collecting means comprises filter means for capturing lint separated from laundry being dried in said drying drum and a lint collector disposed upstream of said filter means in closely spaced, opposed relationship to part of said filter means, said filter means except for said part being exposed to the interior of said drying drum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58089142A JPS59214494A (en) | 1983-05-23 | 1983-05-23 | Drum type clothing dryer |
| JP89142/83 | 1983-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1237578A true CA1237578A (en) | 1988-06-07 |
Family
ID=13962615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000454869A Expired CA1237578A (en) | 1983-05-23 | 1984-05-22 | Drum type washing dryer |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4557058A (en) |
| JP (1) | JPS59214494A (en) |
| KR (1) | KR910009946B1 (en) |
| AU (1) | AU548711B2 (en) |
| CA (1) | CA1237578A (en) |
| ZA (1) | ZA843857B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964386A (en) * | 2020-08-06 | 2020-11-20 | 崔崇岩 | Drying device for wood chip treatment |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61115598A (en) * | 1984-11-09 | 1986-06-03 | 株式会社日立製作所 | Waste thread collector of clothing dryer |
| EP0184929B1 (en) * | 1984-12-14 | 1989-03-08 | Avon Industrial Polymers Limited | Sight correction attachment for respirators |
| US4700492A (en) * | 1986-02-05 | 1987-10-20 | Whirlpool Corporation | Air actuated automatic lint screen cleaning system for dryer |
| US4669199A (en) * | 1986-03-31 | 1987-06-02 | Raytheon Company | Clothes dryer with a lint incinerator |
| FR2646444B1 (en) * | 1989-04-28 | 1992-02-21 | Ciapem | DRYING AND / OR WASHING MACHINE PROVIDED WITH A BUTTERFILTER |
| US5317816A (en) * | 1993-06-11 | 1994-06-07 | White Consolidated Industries, Inc. | Air duct structure for clothes dryer |
| DE69427702T2 (en) * | 1993-09-15 | 2001-10-25 | Fisher & Paykel | FLUSH COLLECTOR FOR LAUNDRY DRYERS |
| US5548904A (en) * | 1995-05-01 | 1996-08-27 | Innoventions | Article catcher for clothes dryer |
| US20070266740A9 (en) | 2000-07-25 | 2007-11-22 | Kendall James W | Vertical laundry module |
| KR100408060B1 (en) * | 2001-06-29 | 2003-12-03 | 엘지전자 주식회사 | Air blower for dryer |
| KR101093988B1 (en) * | 2004-06-05 | 2011-12-15 | 엘지전자 주식회사 | A sealing apparatus of the door lint filter for a drying machine |
| US20070151300A1 (en) | 2005-12-30 | 2007-07-05 | Sunshine Richard A | Modular laundry system with horizontal module spanning two laundry appliances |
| US20070151303A1 (en) | 2005-12-30 | 2007-07-05 | Doyle Colleen M | Modular laundry system with work surface having a functional element |
| US20070151304A1 (en) | 2005-12-30 | 2007-07-05 | Kendall James W | Modular laundry system with work surface having a functional insert |
| US11255040B2 (en) | 2004-10-22 | 2022-02-22 | Whirlpool Corporation | Modular laundry system |
| US20070151306A1 (en) | 2005-12-30 | 2007-07-05 | Gilboe Kevin J | Modular laundry system with work surface |
| US20060117810A1 (en) | 2004-10-22 | 2006-06-08 | Kendall James W | Modular Laundry system with segmented work surface |
| DE102004055927A1 (en) * | 2004-11-19 | 2006-05-24 | BSH Bosch und Siemens Hausgeräte GmbH | Condensing washer dryer has motor fixed in base with shafts to drive both drum and fan that is partly encapsulated by bearing shield |
| WO2007061206A1 (en) * | 2005-11-24 | 2007-05-31 | Lg Electronics Inc. | Clothes dryer |
| US7913419B2 (en) * | 2005-12-30 | 2011-03-29 | Whirlpool Corporation | Non-tumble clothes dryer |
| US7886458B2 (en) * | 2006-12-22 | 2011-02-15 | G.A. Braun Inc. | Lint collection apparatus and system for fabric dryers |
| CN101457464B (en) * | 2007-12-11 | 2012-04-04 | 海尔集团公司 | Rotary drum front end support device capable of implementing dryer upend |
| ES2374768T3 (en) | 2008-04-30 | 2012-02-21 | Lg Electronics Inc. | WASHING MACHINE. |
| KR101608760B1 (en) | 2008-04-30 | 2016-04-04 | 엘지전자 주식회사 | Laundry machine |
| ATE533880T1 (en) * | 2008-04-30 | 2011-12-15 | Lg Electronics Inc | WASHING MACHINE |
| CN110804833A (en) * | 2018-07-18 | 2020-02-18 | 青岛海尔滚筒洗衣机有限公司 | Method for judging water fullness of water storage mechanism and clothes dryer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3060593A (en) * | 1959-08-07 | 1962-10-30 | Gen Motors Corp | Clothes drier |
| GB1503830A (en) * | 1975-07-18 | 1978-03-15 | Hitachi Ltd | Clothes drier |
-
1983
- 1983-05-23 JP JP58089142A patent/JPS59214494A/en active Granted
-
1984
- 1984-05-22 US US06/612,808 patent/US4557058A/en not_active Expired - Fee Related
- 1984-05-22 KR KR1019840002791A patent/KR910009946B1/en not_active IP Right Cessation
- 1984-05-22 AU AU28466/84A patent/AU548711B2/en not_active Ceased
- 1984-05-22 CA CA000454869A patent/CA1237578A/en not_active Expired
- 1984-05-22 ZA ZA843857A patent/ZA843857B/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964386A (en) * | 2020-08-06 | 2020-11-20 | 崔崇岩 | Drying device for wood chip treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| AU548711B2 (en) | 1986-01-02 |
| KR910009946B1 (en) | 1991-12-06 |
| US4557058A (en) | 1985-12-10 |
| JPH0361471B2 (en) | 1991-09-19 |
| JPS59214494A (en) | 1984-12-04 |
| KR850000060A (en) | 1985-02-25 |
| AU2846684A (en) | 1984-11-29 |
| ZA843857B (en) | 1984-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1237578A (en) | Drum type washing dryer | |
| KR100247710B1 (en) | Lint collector for clothes drier | |
| CN101748583B (en) | Dryer and method for removing lint of dryer | |
| US5706588A (en) | Device and method for separating lint particles in a clothes dryer | |
| US20080235978A1 (en) | Self-cleaning lint collector | |
| CN1436259A (en) | Air circulation household appliance with washable filter element | |
| US3320678A (en) | Easy clean lint filter | |
| JPH07694A (en) | Clothes dryer | |
| US4638573A (en) | Lint and raveling collector for clothes dryer | |
| EP0045288B1 (en) | Laundry drying machine | |
| EP1022373B1 (en) | Air-exhaust type clothes tumble drier | |
| US3108464A (en) | Lint filtering and disposal arrangement for clothes cleaning machine | |
| JP3259474B2 (en) | Clothes dryer lint collecting device | |
| JP3262656B2 (en) | Clothes dryer | |
| KR20040056811A (en) | Washing machine having drying function | |
| JP2004081717A (en) | Lint removing device | |
| GB2295667A (en) | Tumble dryer lint filter | |
| KR100662763B1 (en) | Fluffs filtering apparatus for a dryer | |
| KR100220732B1 (en) | Dish washer | |
| KR101177479B1 (en) | drying device | |
| KR101685977B1 (en) | drying device | |
| JPH0725182Y2 (en) | Laundry rotating drum | |
| CA1052589A (en) | Continuous fresh water flow clothes washer | |
| JPH07204398A (en) | Waste thread collector of clothing dryer | |
| JPH01256999A (en) | Waste thread collector for clothes drier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |