CA2178571A1 - Container compartment in particular for refrigerators and similar household electrical appliances - Google Patents
Container compartment in particular for refrigerators and similar household electrical appliancesInfo
- Publication number
- CA2178571A1 CA2178571A1 CA002178571A CA2178571A CA2178571A1 CA 2178571 A1 CA2178571 A1 CA 2178571A1 CA 002178571 A CA002178571 A CA 002178571A CA 2178571 A CA2178571 A CA 2178571A CA 2178571 A1 CA2178571 A1 CA 2178571A1
- Authority
- CA
- Canada
- Prior art keywords
- compartment
- interspace
- sheet
- opaque
- expanded polystyrene
- 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.)
- Abandoned
Links
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 9
- 239000004794 expanded polystyrene Substances 0.000 claims description 19
- 239000004793 Polystyrene Substances 0.000 claims description 12
- 229920002223 polystyrene Polymers 0.000 claims description 12
- 239000004411 aluminium Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 229920001519 homopolymer Polymers 0.000 claims 2
- 230000005294 ferromagnetic effect Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a general shape other than plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
- B32B5/20—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material foamed in situ
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/10—Buildings forming part of cooling plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
- F25D23/062—Walls defining a cabinet
- F25D23/063—Walls defining a cabinet formed by an assembly of panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/41—Opaque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2325/00—Polymers of vinyl-aromatic compounds, e.g. polystyrene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2509/00—Household appliances
- B32B2509/10—Refrigerators or refrigerating equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/14—Insulation with respect to heat using subatmospheric pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
To obtain an appreciable level of insulation while at the same time achieving easy dismantling in view of material recycling, the container compartment (1, 1A) of the invention comprises a seat (9, 9A) freely housing laminar elements (10, 10A) opaque to infrared rays, preferably envelopes under vacuum,
Description
IMPROVED CONTAINER COMPARTNENT IN PARTICULAR FOR REFRIGERATORS AND
SIMILAR HOUSEHOLD ELECTRICAL APPLIANCES
This invention relates to an improved container compartment in particular for refrigerators and similar household electrical appliances.
In the refrigerator and freezer sector there is a particular need for constructing machines requiring the lowest possible energy consumption for their operation while at the same time able to be easily recycled when fed to demolition.
These requirements are tendentially contrasting because a reduction in energy consumption (necessarily requiring an increased insulation) imposes the use of increasingly sophisticated structures which do not facilitate dismantling~ this instead being essential for machine recyclability.
The object of the present invention is to obviate the aforesaid drawback by providing a container compartment for refrigerators or freezers which compared with known refrigerator compartments of equal capacity is of tendentially high thermal insulation while at the same time being easily dismantled into related elements to facilitate recycling when fed to demolition.
This object is attained by a container compartment in accordance 217~571 -with claims l and/or 7.
The presence, within the walls, of interspaces housing laminar elements opaque to infrared rays substantially increases the coefficient of thermal insulation, however the fact that the component elements of the walls or the compartment are separable simply by removing a section bar or by withdrawing them from each other facilitates dismantling and hence recycling. Again for this purpoSe, the infrared-opaque elements are freely housed in their seats and can consequently be totally recovered to the extent of being able to be possibly reused in the same sector.
The invention is illustrated by way of non-limiting example in the figures of the accompanying drawings.
Figure 1 is a partially broken-away perspective view of a first embodiment of the container compartment according to the invention;
Figure 2 is a detail of Figure 1;
Figure 3 is a perspective partial view of a component element of the container compartment of Figure 1;
Figure 4 is an exploded perspective view of a second embodiment of the container compartment according to the invention;
Figure 5 is an enlarged partial section showing the joining region of the component parts of the second embodiment of the container compartment;
Figure 6 shows part of a component element of the container compartment of Figure 4;
Figures 7 and 8 show an enlarged partial section through two elements for blocking infrared rays;
-Figure 9 is a section through a part of the compartment of the invention.
With particular reference to Figures 1-3, the first embodiment of the container compartment of the invention, indicated overall by 1, is particularly intended for the construction of refrigerators and/or freezers by applying a refrigeration unit, not shown.
It comprises a rear wall 2, a wall opposite the base wall and forming the door (not shown) of said container compartment, an upper wall 3, a lower wall 4 and two lateral walls 5.
The refrigeration unit (not shown) is preferably secured to the rear wall. Said walls have a composite structure formed from an outer sheet 6 and an inner sheet 7 of rigid material having a thickness substantially less than that of the interspace 8 between them.
The interspace 8 is filled with expanded polystyrene or other material similar in terms of thermal insulation. At least one wall chosen from the upper wall 3, the lower wall 4 and the lateral walls 5 comprises a seat 9 freely housing a laminar element 10 opaque to infrared rays. Each outer sheet 6 of the upper wall 3, lower wall 4 and lateral walls 5 is fixed to the adjacent outer sheet along the common dihedral corner by a section bar 11 of substantially T cross-section. The section bar 11 is installed such that the two equal elements or flanges 12 retain the respective outer sheets 6 adhering to the expanded polystyrene of the interspace 8 whereas the third element 13 is forced into a rectilinear groove 14 positioned along the apex of the dihedral corner of the container compartment 1. For reasons of economy, -practicality and in particular structural rigidity, the inner ri8id material sheets 7 are obtained directly bonded to the expanded polystyrene occupying the interspace 8 by the moulding of the expanded part.
The laminar elements 10 are formed of a material opaque to infrared rays so as to increase the thermal insulation of the container compartment l.
In the embodiment shown in Figures 1 and 2, the laminar element 10 opaque to infrared rays comprises at least one sheet of aluminium or material of similar properties. In an improved construction shown in Figure 7, the laminar element 10 opaque to infrared rays is formed from a plurality of aluminium sheets 15 spaced apart by at least one sheet 16 of expanded polystyrene. In a further construction shown in Figure 8, the laminar element 10 opaque to infrared rays is formed from an envelope 17 of material having such properties as to constitute a barrier towards atmospheric gases, preferably aluminium, containing at least one layer of insulating material, preferably a sheet of polystyrene 16, in which however said envelope and the material contained therein have been placed under vacuum to almost completely eliminate the thermal transmission component through the gas which would otherwise remain trapped within the envelope 17, and in the material contained in it, during its manufacture. The opacity to infrared rays is achieved either by the insulating layer or by the characteristics of the constituent material of the envelope 17.
Again for reasons of economy and structural rigidity, the inner sheets 7 of rigid material, being also of polystyrene, are obtained directly bonded to the polystyrene occupying the interspace 8 by the moulding of the expanded part.
The combination of the insulation material-filled interspace 8 and the radiation-blocking laminar element 10 results in a container compartment of high thermal insulation. However it does not impede recycling because it is necessary merely to remove the section bar 11 to separate the insulating material (usually polystyrene or like materials) from the radiation-blocking material, containing heterogeneous material which is usually aluminium. The radiation-blocking laminar element 10 can be easily reused for the same purpose, especially if it takes the form of one of the more complex and hence effective constructions, such as that in which the interior of the envelope 17 forming it is under vacuum (Figure 8). This hence represents a further contribution to the more general object of providing an ecological container compartment for refrigerators and/or freezers.
Again in accordance with the aforesaid concepts, the container compartment according to the invention can take the form of a further embodiment shown in Figures 4-6. In said figures corresponding elements are indicated by the same reference numerals plus the letter "A". The same applies to Figures 7 and 8.
In the container compartment 1A the inner sheets 7A of rigid material (polystyrene) are obtained directly bonded to the expanded polystyrene occupying the interspace 8A by the moulding of the expanded part. Likewise, the outer sheets 6A of rigid material (polystyrene) are obtained directly bonded to the 217~71 expanded polystyrene occupying the interspace 8A by the moulding of the expanded part. The container compartment 1A is divided into two portions (a first 18 and a second 19) along the centre planes of the interspace 8A, the first 18 being inserted into the second 19. Preferably the edges of the rigid-material inner sheets 7A and outer sheets 6A are joined together by an extruded section bar 20 extending along that edge of the container 1A
against which the door, not shown, is to abut. The first portion 18 and second portion 19 can also be joined together in different ways, for example as shown in Figure 9.
The plastics rim 20 comprises an internal metal core 21 for the magnetic adhesion of the door.
Again in this second embodiment of the container compartment 1A at least one wall chosen from the upper wall 3A, lower wall 4A and lateral walls 5A comprises within said interspace 8A a seat 9A
freely housing a laminar element 1OA opaque to infrared rays. As can be seen the seats 9A freely housing the laminar elements 1OA
are provided between the two portions 18 and 19 of expanded polystyrene filling the interspace 8A.
Again in this case the combination of the interspace 8A filled with insulating material and the radiation-blocking laminar element 10A results in a container compartment 1A of high thermal insulation. However the container compartment obtained in this manner does not impede recycling because it is necessary merely to withdraw the components in order to separate the insulating material (usually polystyrene and its copolymers or like materials) from the radiation-blocking material (usually aluminium -sheets) or envelope elements which can be recovered for reuse in the same sector.
The aforedescribed is also applicable to container compartments of refrigerators and/or freezers of chest type, ie those in which the door when closed lies in a substantially horizontal plane and when open lies in a substantially vertical plane.
It is important to note that the container compartment of the first embodiment (Figure 1) and of the second embodiment (Figure 4) differ in particular from the known art in that a single material (polystyrene and its copolymers in the described embodiments) is used both to form the load-bearing structure (outer sheets 6A and inner sheets 7 and 7A) and to form the insulating portion (interspaces 8 and 8A). Moreover the invention teaches the formation of a refrigerator cabinet by bonding the same material to different allotropic arrangements, eg expanded sintered polystyrene bonded to a rigid polystyrene film by thermoforming.
This results in an easily recycled and low-cost product as it is composed of homogeneous materials. Again, by directly moulding the expanded polystyrene onto the rigid walls 6A, 7, 7A, a product of excellent structural quality is obtained.
The addition of the laminar elements 10, 10A to the sintered polystyrene increases overall the thermal insulation capacity of the container compartment of the invention, resulting in reduced energy consumption of the refrigeration unit to be associated therewith.
The advantages deriving from the use of the technique according to the invention are considerable in that, for equal conditions:
- the typical thermal resistance (lambda) of an insulating interspace based on polyurethane expanded by pentane is about 20-24 mW/km;
- the typical thermal resistance (lambda) of an insulating interspace according to the invention enables lambda values of less than 16 mW/km to be achieved.
The difference and hence the advantages in terms of energy saving are apparent. In addition the lambda value of the compartment material is less sensitive to deterioration by ageing than the expanded polyurethane currently used for constructing such compartments.
The container compartment of the invention can be constructed in fewer steps than traditional compartments, which require at least the three different steps of sheet metal bending, thermoforming and foaming.
In particular, the compartment container 1A of the second embodiment is even more advantageous in that it is constructed by simply fitting together two shells 18 and 19 with the elements 17A
interposed between them. The compartment container lA can hence be precision-constructed by insertion-fitting, and thus without the use of adhesives, which would affect assembly costs and create recycling problems.
SIMILAR HOUSEHOLD ELECTRICAL APPLIANCES
This invention relates to an improved container compartment in particular for refrigerators and similar household electrical appliances.
In the refrigerator and freezer sector there is a particular need for constructing machines requiring the lowest possible energy consumption for their operation while at the same time able to be easily recycled when fed to demolition.
These requirements are tendentially contrasting because a reduction in energy consumption (necessarily requiring an increased insulation) imposes the use of increasingly sophisticated structures which do not facilitate dismantling~ this instead being essential for machine recyclability.
The object of the present invention is to obviate the aforesaid drawback by providing a container compartment for refrigerators or freezers which compared with known refrigerator compartments of equal capacity is of tendentially high thermal insulation while at the same time being easily dismantled into related elements to facilitate recycling when fed to demolition.
This object is attained by a container compartment in accordance 217~571 -with claims l and/or 7.
The presence, within the walls, of interspaces housing laminar elements opaque to infrared rays substantially increases the coefficient of thermal insulation, however the fact that the component elements of the walls or the compartment are separable simply by removing a section bar or by withdrawing them from each other facilitates dismantling and hence recycling. Again for this purpoSe, the infrared-opaque elements are freely housed in their seats and can consequently be totally recovered to the extent of being able to be possibly reused in the same sector.
The invention is illustrated by way of non-limiting example in the figures of the accompanying drawings.
Figure 1 is a partially broken-away perspective view of a first embodiment of the container compartment according to the invention;
Figure 2 is a detail of Figure 1;
Figure 3 is a perspective partial view of a component element of the container compartment of Figure 1;
Figure 4 is an exploded perspective view of a second embodiment of the container compartment according to the invention;
Figure 5 is an enlarged partial section showing the joining region of the component parts of the second embodiment of the container compartment;
Figure 6 shows part of a component element of the container compartment of Figure 4;
Figures 7 and 8 show an enlarged partial section through two elements for blocking infrared rays;
-Figure 9 is a section through a part of the compartment of the invention.
With particular reference to Figures 1-3, the first embodiment of the container compartment of the invention, indicated overall by 1, is particularly intended for the construction of refrigerators and/or freezers by applying a refrigeration unit, not shown.
It comprises a rear wall 2, a wall opposite the base wall and forming the door (not shown) of said container compartment, an upper wall 3, a lower wall 4 and two lateral walls 5.
The refrigeration unit (not shown) is preferably secured to the rear wall. Said walls have a composite structure formed from an outer sheet 6 and an inner sheet 7 of rigid material having a thickness substantially less than that of the interspace 8 between them.
The interspace 8 is filled with expanded polystyrene or other material similar in terms of thermal insulation. At least one wall chosen from the upper wall 3, the lower wall 4 and the lateral walls 5 comprises a seat 9 freely housing a laminar element 10 opaque to infrared rays. Each outer sheet 6 of the upper wall 3, lower wall 4 and lateral walls 5 is fixed to the adjacent outer sheet along the common dihedral corner by a section bar 11 of substantially T cross-section. The section bar 11 is installed such that the two equal elements or flanges 12 retain the respective outer sheets 6 adhering to the expanded polystyrene of the interspace 8 whereas the third element 13 is forced into a rectilinear groove 14 positioned along the apex of the dihedral corner of the container compartment 1. For reasons of economy, -practicality and in particular structural rigidity, the inner ri8id material sheets 7 are obtained directly bonded to the expanded polystyrene occupying the interspace 8 by the moulding of the expanded part.
The laminar elements 10 are formed of a material opaque to infrared rays so as to increase the thermal insulation of the container compartment l.
In the embodiment shown in Figures 1 and 2, the laminar element 10 opaque to infrared rays comprises at least one sheet of aluminium or material of similar properties. In an improved construction shown in Figure 7, the laminar element 10 opaque to infrared rays is formed from a plurality of aluminium sheets 15 spaced apart by at least one sheet 16 of expanded polystyrene. In a further construction shown in Figure 8, the laminar element 10 opaque to infrared rays is formed from an envelope 17 of material having such properties as to constitute a barrier towards atmospheric gases, preferably aluminium, containing at least one layer of insulating material, preferably a sheet of polystyrene 16, in which however said envelope and the material contained therein have been placed under vacuum to almost completely eliminate the thermal transmission component through the gas which would otherwise remain trapped within the envelope 17, and in the material contained in it, during its manufacture. The opacity to infrared rays is achieved either by the insulating layer or by the characteristics of the constituent material of the envelope 17.
Again for reasons of economy and structural rigidity, the inner sheets 7 of rigid material, being also of polystyrene, are obtained directly bonded to the polystyrene occupying the interspace 8 by the moulding of the expanded part.
The combination of the insulation material-filled interspace 8 and the radiation-blocking laminar element 10 results in a container compartment of high thermal insulation. However it does not impede recycling because it is necessary merely to remove the section bar 11 to separate the insulating material (usually polystyrene or like materials) from the radiation-blocking material, containing heterogeneous material which is usually aluminium. The radiation-blocking laminar element 10 can be easily reused for the same purpose, especially if it takes the form of one of the more complex and hence effective constructions, such as that in which the interior of the envelope 17 forming it is under vacuum (Figure 8). This hence represents a further contribution to the more general object of providing an ecological container compartment for refrigerators and/or freezers.
Again in accordance with the aforesaid concepts, the container compartment according to the invention can take the form of a further embodiment shown in Figures 4-6. In said figures corresponding elements are indicated by the same reference numerals plus the letter "A". The same applies to Figures 7 and 8.
In the container compartment 1A the inner sheets 7A of rigid material (polystyrene) are obtained directly bonded to the expanded polystyrene occupying the interspace 8A by the moulding of the expanded part. Likewise, the outer sheets 6A of rigid material (polystyrene) are obtained directly bonded to the 217~71 expanded polystyrene occupying the interspace 8A by the moulding of the expanded part. The container compartment 1A is divided into two portions (a first 18 and a second 19) along the centre planes of the interspace 8A, the first 18 being inserted into the second 19. Preferably the edges of the rigid-material inner sheets 7A and outer sheets 6A are joined together by an extruded section bar 20 extending along that edge of the container 1A
against which the door, not shown, is to abut. The first portion 18 and second portion 19 can also be joined together in different ways, for example as shown in Figure 9.
The plastics rim 20 comprises an internal metal core 21 for the magnetic adhesion of the door.
Again in this second embodiment of the container compartment 1A at least one wall chosen from the upper wall 3A, lower wall 4A and lateral walls 5A comprises within said interspace 8A a seat 9A
freely housing a laminar element 1OA opaque to infrared rays. As can be seen the seats 9A freely housing the laminar elements 1OA
are provided between the two portions 18 and 19 of expanded polystyrene filling the interspace 8A.
Again in this case the combination of the interspace 8A filled with insulating material and the radiation-blocking laminar element 10A results in a container compartment 1A of high thermal insulation. However the container compartment obtained in this manner does not impede recycling because it is necessary merely to withdraw the components in order to separate the insulating material (usually polystyrene and its copolymers or like materials) from the radiation-blocking material (usually aluminium -sheets) or envelope elements which can be recovered for reuse in the same sector.
The aforedescribed is also applicable to container compartments of refrigerators and/or freezers of chest type, ie those in which the door when closed lies in a substantially horizontal plane and when open lies in a substantially vertical plane.
It is important to note that the container compartment of the first embodiment (Figure 1) and of the second embodiment (Figure 4) differ in particular from the known art in that a single material (polystyrene and its copolymers in the described embodiments) is used both to form the load-bearing structure (outer sheets 6A and inner sheets 7 and 7A) and to form the insulating portion (interspaces 8 and 8A). Moreover the invention teaches the formation of a refrigerator cabinet by bonding the same material to different allotropic arrangements, eg expanded sintered polystyrene bonded to a rigid polystyrene film by thermoforming.
This results in an easily recycled and low-cost product as it is composed of homogeneous materials. Again, by directly moulding the expanded polystyrene onto the rigid walls 6A, 7, 7A, a product of excellent structural quality is obtained.
The addition of the laminar elements 10, 10A to the sintered polystyrene increases overall the thermal insulation capacity of the container compartment of the invention, resulting in reduced energy consumption of the refrigeration unit to be associated therewith.
The advantages deriving from the use of the technique according to the invention are considerable in that, for equal conditions:
- the typical thermal resistance (lambda) of an insulating interspace based on polyurethane expanded by pentane is about 20-24 mW/km;
- the typical thermal resistance (lambda) of an insulating interspace according to the invention enables lambda values of less than 16 mW/km to be achieved.
The difference and hence the advantages in terms of energy saving are apparent. In addition the lambda value of the compartment material is less sensitive to deterioration by ageing than the expanded polyurethane currently used for constructing such compartments.
The container compartment of the invention can be constructed in fewer steps than traditional compartments, which require at least the three different steps of sheet metal bending, thermoforming and foaming.
In particular, the compartment container 1A of the second embodiment is even more advantageous in that it is constructed by simply fitting together two shells 18 and 19 with the elements 17A
interposed between them. The compartment container lA can hence be precision-constructed by insertion-fitting, and thus without the use of adhesives, which would affect assembly costs and create recycling problems.
Claims (17)
1. An improved container compartment (1) particularly for refrigerators and similar household electrical appliances, comprising a rear wall (2), a wall opposite the rear wall and forming the door of said compartment, an upper wall (3), a lower wall (4) and two lateral walls (5), said walls having a composite structure formed from an outer sheet (6) and an inner sheet (7) of rigid material having a thickness substantially less than that of the interspace (8) existing between them, said interspace (8) being filled with expanded polystyrene, characterised in that:
- at least one wall chosen from the upper wall (3), the lower wall (4) and the lateral walls (5) comprises a seat (9) freely housing a laminar element (10) opaque to infrared rays;
- each outer sheet (6) of the upper wall (3), lower wall (4) and lateral walls (5) is fixed to the adjacent outer sheet along the common dihedral corner by a section bar (11) of substantially T
cross-section, of which the two equal elements (12) retain the respective outer sheets (6) adhering to the expanded polystyrene of the interspace (8) whereas the third element (13) is forced into a rectilinear groove 14 positioned along the apex of the dihedral corner.
- at least one wall chosen from the upper wall (3), the lower wall (4) and the lateral walls (5) comprises a seat (9) freely housing a laminar element (10) opaque to infrared rays;
- each outer sheet (6) of the upper wall (3), lower wall (4) and lateral walls (5) is fixed to the adjacent outer sheet along the common dihedral corner by a section bar (11) of substantially T
cross-section, of which the two equal elements (12) retain the respective outer sheets (6) adhering to the expanded polystyrene of the interspace (8) whereas the third element (13) is forced into a rectilinear groove 14 positioned along the apex of the dihedral corner.
2. A compartment as claimed in claim 1, characterised in that the expanded polystyrene occupying the interspace is moulded directly bonded to the inner sheets of rigid material.
3. A compartment as claimed in claim 1, characterised in that the laminar element (10) opaque to infrared rays comprises at least one aluminium sheet (15).
4. A compartment as claimed in claim 1, characterised in that the laminar element (10) opaque to infrared rays is formed from a plurality of aluminium sheets (15) spaced apart by at least one sheet of expanded polystyrene (16).
5. A compartment as claimed in claim 1, characterised in that the laminar element (10) opaque to infrared rays is formed from an envelope (17) of opaque material containing at least one sheet or layer of insulating material (16), said envelope (17) being under vacuum.
6. A compartment as claimed in claim 1, characterised in that by moulding the polystyrene occupying the interspace (8) directly onto the inner sheet (7), excellent structural loading capacity is obtained.
7. A compartment as claimed in the preceding claim, characterised in that the rigid material of the inner sheets (7) consists of a homopolymer or copolymer of the expanded polystyrene occupying the interspace (8), so achieving better bonding between the materials and direct recycling of the compartment at the end of product life.
8. An improved container compartment particularly for refrigerators and similar household electrical appliances, comprising a rear wall (2A), a wall opposite the rear wall and forming the door of said compartment, an upper wall (3A), a lower wall (4A) and two lateral walls (5A), said walls having a composite structure formed from an outer sheet (6A) and an inner sheet (7A) of rigid material having a thickness substantially less than that of the interspace (8A) existing between them, said interspace (8A) being filled with expanded polystyrene, characterised in that:
- the expanded polystyrene occupying the interspace (8A) is moulded directly bonded to the inner walls (7A) and outer walls (6A) of rigid material to ensure excellent structural loading capacity, the interspace (8A) being divided into two portions along its centre planes so that one resultant portion of the container compartment (1A) is inserted into the remaining portion, said two portions of the container compartment (1A) being joined together along the edges of said rigid material sheets (6A, 7A) either directly or by an extruded section (20) extending along that edge against which the door is to abut;
- at least one wall chosen from the upper wall (3A), the lower wall (4A) and the lateral walls (5A) comprises within said interspace (8A) a seat (9A) freely housing a laminar element (10A) opaque to infrared rays.
- the expanded polystyrene occupying the interspace (8A) is moulded directly bonded to the inner walls (7A) and outer walls (6A) of rigid material to ensure excellent structural loading capacity, the interspace (8A) being divided into two portions along its centre planes so that one resultant portion of the container compartment (1A) is inserted into the remaining portion, said two portions of the container compartment (1A) being joined together along the edges of said rigid material sheets (6A, 7A) either directly or by an extruded section (20) extending along that edge against which the door is to abut;
- at least one wall chosen from the upper wall (3A), the lower wall (4A) and the lateral walls (5A) comprises within said interspace (8A) a seat (9A) freely housing a laminar element (10A) opaque to infrared rays.
9. A compartment as claimed in the preceding claim, characterised in that the rigid material of the inner sheets (7A) consists of a homopolymer or copolymer of the expanded polystyrene occupying the interspace (8A), so achieving better bonding between the materials and direct recycling of the compartment at the end of product life.
10. A compartment as claimed in claim 8, characterised in that the seats (9A) freely housing the laminar elements (10A) are provided between the two expanded polystyrene portions which fill the interspace (8A).
11. A compartment as claimed in claim 8, characterised in that the laminar element (10A) opaque to infrared rays comprises at least one aluminium sheet.
12. A compartment as claimed in claim 8, characterised in that the laminar element (10A) opaque to infrared rays is formed from a plurality of aluminium sheets (15A) spaced apart by at least one sheet of expanded polystyrene (16A) or material of similar properties.
13. A compartment as claimed in claim 8, characterised in that the laminar element (10A) opaque to infrared rays is formed from an envelope (17A) containing at least one sheet or one layer of insulating material (16A), said envelope (17A) being under vacuum.
14. A compartment as claimed in claim 8, characterised in that the extruded section (20) extending along the edge against which the door is intended to abut contains internally a ferromagnetic element (21).
15. A compartment as claimed in claims 1 and 8, characterised by being of the type used in chest refrigerators and/or freezers.
16. A compartment as claimed in claims 1 and 8, characterised in that the insulation function is performed by two different insulating elements, the first consisting of expanded polystyrene which has a modest lambda value and structurizes the system, the other having an excellent lambda value and consisting preferably of an envelope (17A) under vacuum.
17. A compartment as claimed in claim 16, characterised in that the envelope (17A) is freely housed in the seats (9A), so allowing easy separation of the compartment and hence advantageous reuse and/or recycling of the components.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI95U000407 | 1995-06-08 | ||
| IT1995MI000407U IT236949Y1 (en) | 1995-06-08 | 1995-06-08 | CONTAINER COMPARTMENT PERFECTED IN PARTICULAR FOR REFRIGERATED APPLIANCES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2178571A1 true CA2178571A1 (en) | 1996-12-09 |
Family
ID=11370760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002178571A Abandoned CA2178571A1 (en) | 1995-06-08 | 1996-06-07 | Container compartment in particular for refrigerators and similar household electrical appliances |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US5730516A (en) |
| EP (1) | EP0747646B1 (en) |
| JP (1) | JPH09101080A (en) |
| CN (1) | CN1160179A (en) |
| BR (1) | BR9602702A (en) |
| CA (1) | CA2178571A1 (en) |
| DE (1) | DE69613906T2 (en) |
| IT (1) | IT236949Y1 (en) |
| MA (1) | MA23894A1 (en) |
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|---|---|---|---|---|
| DE19520020A1 (en) * | 1995-05-31 | 1996-12-05 | Bosch Siemens Hausgeraete | Insulated housing |
| IT236949Y1 (en) * | 1995-06-08 | 2000-08-31 | Devi Spa | CONTAINER COMPARTMENT PERFECTED IN PARTICULAR FOR REFRIGERATED APPLIANCES |
| TR199700083A2 (en) * | 1997-02-03 | 1998-08-21 | Ar�El�K A.�. | Refrigerator door with high insulation and recycling performance. |
| DE19948361A1 (en) * | 1999-10-07 | 2001-04-12 | Bsh Bosch Siemens Hausgeraete | Refrigerator |
| TW470837B (en) * | 2000-04-21 | 2002-01-01 | Matsushita Refrigeration | Vacuum heat insulator |
| KR20000054840A (en) * | 2000-06-29 | 2000-09-05 | 최대근 | Recycling method of refrigerator |
| US7530204B2 (en) * | 2001-10-26 | 2009-05-12 | Celestia | Climate controlled housing unit |
| US6773082B2 (en) * | 2002-01-28 | 2004-08-10 | Daewoo Electronics Corp. | Refrigerator using EPS insulating material |
| KR20040094790A (en) * | 2002-03-13 | 2004-11-10 | 마쓰시타 레키 가부시키가이샤 | Refrigerator |
| US7293847B2 (en) * | 2002-08-31 | 2007-11-13 | Samsung Electronics Co., Ltd. | Cabinet for recessed refrigerators |
| US7185509B2 (en) * | 2002-08-31 | 2007-03-06 | Samsung Electronics Co., Ltd. | Refrigerator |
| US20040041503A1 (en) * | 2002-08-31 | 2004-03-04 | Samsung Electronics Co., Ltd. | Frame of a wall-embedded refrigerator |
| US7188490B2 (en) | 2003-01-17 | 2007-03-13 | Samsung Electronics Co., Ltd. | Refrigerator |
| US7228612B2 (en) * | 2004-03-23 | 2007-06-12 | Viking Range Corporation | Methods of making refrigerator storage assemblies |
| WO2005121668A1 (en) * | 2004-06-11 | 2005-12-22 | Arcelik Anonim Sirketi | An insulated unit |
| GB2415766B (en) * | 2004-07-02 | 2007-04-11 | Cambridge Consultants | Vacuum storage compartment construction in a cooling apparatus body |
| DE102004036749A1 (en) * | 2004-07-29 | 2006-03-30 | BSH Bosch und Siemens Hausgeräte GmbH | Multi-part refrigeration unit body and manufacturing method thereof |
| US7337620B2 (en) * | 2005-05-18 | 2008-03-04 | Whirlpool Corporation | Insulated ice compartment for bottom mount refrigerator |
| DE102005057143A1 (en) * | 2005-11-30 | 2007-06-06 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration unit with insulation strip for thermal decoupling of the side walls |
| WO2007138065A2 (en) * | 2006-05-31 | 2007-12-06 | Arcelik Anonim Sirketi | A refrigerator |
| US20100287974A1 (en) * | 2009-05-15 | 2010-11-18 | Whirlpool Corporation | Insulation panels applied to or as a feature module |
| DE102011006238A1 (en) | 2011-03-28 | 2012-10-04 | BSH Bosch und Siemens Hausgeräte GmbH | Modular device body |
| JP5788232B2 (en) * | 2011-06-13 | 2015-09-30 | 株式会社東芝 | refrigerator |
| US9316430B2 (en) * | 2013-01-14 | 2016-04-19 | Fairlane Industries Inc. | Thermal insulating material |
| CN103121553A (en) * | 2013-01-28 | 2013-05-29 | 熊建珍 | Refrigeration refreshment box and method of manufacturing box materials |
| ITRM20130181A1 (en) * | 2013-03-27 | 2014-09-28 | Ind Scaffalature Arredamenti Isa S R L | REFRIGERATOR BENCH AND ASSEMBLY PROCEDURE FOR THIS BENCH |
| CN104120902B (en) * | 2013-04-24 | 2016-04-20 | 武汉航空仪表有限责任公司 | Freezing weather room cold-prevention bridge structure |
| JP2016186316A (en) * | 2015-03-27 | 2016-10-27 | パナソニックＩｐマネジメント株式会社 | Vacuum insulation housing |
| US9791205B2 (en) * | 2015-12-09 | 2017-10-17 | Whirlpool Corporation | Insulating material with renewable resource component |
| EP3615872B1 (en) * | 2017-04-28 | 2023-04-19 | Whirlpool Corporation | Structural cabinet for an appliance |
| US20220230901A1 (en) * | 2021-01-21 | 2022-07-21 | Micron Technology, Inc. | Containers for protecting semiconductor devices and related methods |
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| US1327473A (en) * | 1918-12-31 | 1920-01-06 | M E Converse & Son Co | Refrigerator |
| FR848292A (en) * | 1938-06-30 | 1939-10-26 | Sophisticated insulated cabinet | |
| US2275365A (en) * | 1938-07-25 | 1942-03-03 | Hermes Patentverwertungs Gmbh | Refrigerator |
| US2768046A (en) * | 1952-07-09 | 1956-10-23 | Gen Electric | Insulating structures |
| US3014611A (en) * | 1959-11-20 | 1961-12-26 | Westinghouse Electric Corp | Refrigeration apparatus |
| FR1315141A (en) * | 1961-12-06 | 1963-01-18 | Refrigerated unit for the storage and sale of perishable foodstuffs | |
| DE1401585A1 (en) * | 1962-03-02 | 1969-08-14 | Karl Dahmen | Insulated container for frozen food and process for its manufacture |
| DE1579568C3 (en) * | 1965-07-10 | 1975-02-06 | Stif Societa Tecnico Industriale Frigorifera S.P.A., Vicenza (Italien) | Prefabricated, heat-insulating panels that can be joined together using tensioning elements |
| US3363957A (en) * | 1966-06-21 | 1968-01-16 | Westinghouse Electric Corp | Chassis support structure |
| US3520581A (en) * | 1967-03-06 | 1970-07-14 | Giovanni Borghi | Cabinets for refrigerators and the like |
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| US3601463A (en) * | 1970-05-22 | 1971-08-24 | Gen Motors Corp | Refrigerator cabinet encompassing a range of refrigerator volume |
| US4024620A (en) * | 1974-02-22 | 1977-05-24 | Environmental Container Corporation | Methods for manufacturing refrigerating systems |
| US3940195A (en) * | 1974-10-11 | 1976-02-24 | Whirlpool Corporation | Refrigeration cabinet |
| US4426120A (en) * | 1981-04-20 | 1984-01-17 | Mcquay Inc. | Sectioned cabinet for room air conditioning unit |
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| US4707401A (en) * | 1986-12-12 | 1987-11-17 | Whirlpool Corporation | Refrigerator cabinet construction |
| DE3916536C2 (en) * | 1989-05-20 | 1995-08-17 | Hans Dr Viesmann | Wall component for walk-in cold and fresh storage cells |
| EP0408510A3 (en) * | 1989-07-11 | 1992-03-25 | Welka Elektra Engineering Corporation Ltd | Procedure and apparatus for the manufacture of hollow modular panels and also the panels thus obtained for therma, acoustic and electrical insulation and for various kinds of radiation |
| US5082335A (en) * | 1989-12-18 | 1992-01-21 | Whirlpool Corporation | Vacuum insulation system for insulating refrigeration cabinets |
| US5221136A (en) * | 1991-09-12 | 1993-06-22 | Basf Corporation | Refrigerator liner structures |
| IT236949Y1 (en) * | 1995-06-08 | 2000-08-31 | Devi Spa | CONTAINER COMPARTMENT PERFECTED IN PARTICULAR FOR REFRIGERATED APPLIANCES |
-
1995
- 1995-06-08 IT IT1995MI000407U patent/IT236949Y1/en active IP Right Grant
-
1996
- 1996-06-01 EP EP96201513A patent/EP0747646B1/en not_active Expired - Lifetime
- 1996-06-01 DE DE69613906T patent/DE69613906T2/en not_active Expired - Fee Related
- 1996-06-05 MA MA24264A patent/MA23894A1/en unknown
- 1996-06-07 CA CA002178571A patent/CA2178571A1/en not_active Abandoned
- 1996-06-07 CN CN96107948A patent/CN1160179A/en active Pending
- 1996-06-07 US US08/659,927 patent/US5730516A/en not_active Expired - Fee Related
- 1996-06-07 BR BR9602702A patent/BR9602702A/en not_active Application Discontinuation
- 1996-06-10 JP JP8147046A patent/JPH09101080A/en active Pending
-
1997
- 1997-12-18 US US08/993,563 patent/US5890785A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1160179A (en) | 1997-09-24 |
| IT236949Y1 (en) | 2000-08-31 |
| BR9602702A (en) | 1998-10-06 |
| US5730516A (en) | 1998-03-24 |
| ITMI950407V0 (en) | 1995-06-08 |
| EP0747646A1 (en) | 1996-12-11 |
| JPH09101080A (en) | 1997-04-15 |
| ITMI950407U1 (en) | 1996-12-08 |
| DE69613906T2 (en) | 2002-04-04 |
| EP0747646B1 (en) | 2001-07-18 |
| MA23894A1 (en) | 1996-12-31 |
| US5890785A (en) | 1999-04-06 |
| DE69613906D1 (en) | 2001-08-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |