CN103774396A - Heat pump negative pressure efficient drying machine and drying method thereof - Google Patents
Heat pump negative pressure efficient drying machine and drying method thereof Download PDFInfo
- Publication number
- CN103774396A CN103774396A CN201210553281.4A CN201210553281A CN103774396A CN 103774396 A CN103774396 A CN 103774396A CN 201210553281 A CN201210553281 A CN 201210553281A CN 103774396 A CN103774396 A CN 103774396A
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- pressure
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- heat
- temperature
- evaporimeter
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- 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
- D06F58/206—Heat pump 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
- D06F58/30—Drying processes
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
-
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/26—Heat pumps
-
- 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
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
Abstract
The invention discloses a heat pump negative pressure efficient drying machine and a drying method of the heat pump negative pressure efficient drying machine. The drying machine comprises a box body (1), a negative pressure vacuum pump (9), a heat pump compressor (16), an evaporator (12), a throttling valve (15) and a condensate water outlet (11), wherein a control system (19), a rotary drum (2), a condenser (6) and a centrifugal fan (7) are arranged in the box body (1). One end of the negative pressure vacuum pump (9) is connected with the box body (1) through a pipeline, and the other end of the negative pressure vacuum pump (9) is connected with the evaporator (12) through a pipeline. One end of the throttling valve (15) and one end of the heat pump compressor (16) are connected with the evaporator (12) through a pipeline, and the other end of the throttling valve (15) and the other end of the heat pump compressor (16) are connected with the condenser (6) through a pipeline. The condensate water outlet (11) is connected with the lower portion of the evaporator (12). According to the drying machine, wasted heat sources of kitchens, industrial wasted heat sources and other wasted heat sources can be fully utilized, water is rapidly evaporated through a negative pressure technology, and heat energy consumption and heat emission are reduced.
Description
Technical field
The energy-saving dryer that the present invention relates to send out a kind of, particularly relates to heat pump sub-pressure high-efficient dryer.
The invention still further relates to the furnace drying method that uses above-mentioned heat pump sub-pressure high-efficient dryer.
Background technology
Dryer is generally a kind of device for removing the moisture in article after washing, and most of dryers comprise swing roller, has hot-air to be used for transpiring moisture around cylinder.Traditional dryer is heated to a higher temperature for example more than 100 ℃ by the article to be dried in cylinder, by high temperature by moisture evaporation in article.But there is following defect in traditional dryer:
1, power consumption is large, more than water is heated to boiling point, makes moisture evaporation reach oven dry object by high temperature, and higher temperature need to be provided for a long time, therefore can consume mass energy.
2, too high temperature easily damages the article of drying, thereby as some article, structure organization under high-temperature condition easily damages, be out of shape and cause damage.
3, environment is unfriendly, discharges a large amount of high-temperature vapors, is unfavorable for that waste heat turns one's head again.
4, thermal source requirement is high, because needs are heated to temperature more than 100 ℃, therefore needs large power supply continue to provide heat or need high-pressure boiler that high-temperature vapor is provided, and therefore uses inconvenient.
Summary of the invention
The present invention completes in order to solve above deficiency of the prior art, the object of this invention is to provide energy consumption saving wheel, reduction of heat row, environmental friendliness, finished product low temperature, drying rate and soon, does not injure a kind of heat pump sub-pressure high-efficient dryer of drying material and can prepare distilled water simultaneously.
Heat pump sub-pressure high-efficient dryer of the present invention is characterized in that: this heat pump sub-pressure high-efficient dryer comprises casing (1), negative-pressure vacuum pump (9), heat pump compressor (16), evaporimeter (12), choke valve (15), control system (19), temperature sensor, humidity sensor, pressure sensor, wherein said casing (1) top outer is provided with control system (19), in casing, be provided with cylinder (2), cylinder (2) arranged outside has humidity sensor, pressure sensor, temperature sensor, cylinder (2) has hermatic door (3) in casing arranged outside, cylinder (2) top is provided with condenser (6), condenser (6) top is provided with centrifugal blower (7), described centrifugal blower is connected with the discharge pipe (4) in cylinder by pipeline (5), casing is connected with negative-pressure vacuum pump (9) by pipeline (8), negative-pressure vacuum pump (9) is connected with evaporimeter (12) by pipeline (10), evaporimeter (12) is connected with heat pump compressor (16) by pipeline (14), heat pump compressor (16) is connected with condenser (6) by pipeline (17), condenser (6) is connected with choke valve (15) by pipeline (18), choke valve (15) is connected with evaporimeter (12) by pipeline (13), evaporimeter bottom is provided with condensation-water drain (11).
Further, on above-mentioned discharge pipe (4), be uniformly distributed air outlet.
Further, on above-mentioned cylinder (2), be uniformly distributed air outlet.
The present invention also comprises the method that uses above-mentioned heat pump sub-pressure high-efficient dryer to dry, and it is characterized in that: comprise the following steps:
Further, the thermal source of above-mentioned evaporimeter is selected from the discarded low-temperature heat source in kitchen, industrial waste low-temperature heat source, air heat source, solar source.
Further, the vapours of extracting out from negative-pressure vacuum pump (9) enters evaporimeter (12) by pipeline (10), and vapours becomes liquid, emits heat, and becomes distilled water and discharge from condensation-water drain (11).
The present invention is owing to adopting the discarded low-temperature heat source in kitchen, industrial waste low-temperature heat source, air heat source, the low-temperature heat sources such as the vapours that solar source and negative-pressure vacuum pump (9) are extracted out, and promote steam evaporation by negative pressure, therefore make article to be dried in cylinder with water rapid evaporation at a lower temperature, therefore its energy efficient, reduce hot driving, environmental friendliness, drying rate is fast, and do not injure material to be dried, and take full advantage of from casing (1) in the vapours of extracting out through negative-pressure vacuum pump (9) with part heat improve heat utilization efficiency, simultaneously because the vapours in negative-pressure vacuum pump (9) is by evaporimeter (12), emitting heat becomes liquid and has therefore also obtained distilled water, can further utilize to save water source.
Accompanying drawing explanation
Fig. 1 heat pump sub-pressure high-efficient of the present invention dryer front view
Fig. 2 heat pump sub-pressure high-efficient of the present invention dryer side view
Figure number explanation
1 ... casing 2 ... cylinder 3 ... hermatic door
4 ... discharge pipe 5 ... pipeline 6 ... condenser
7 ... centrifugal blower 8 ... pipeline 9 ... negative-pressure vacuum pump
10 ... pipeline 11 ... condensation-water drain 12 ... evaporimeter
13 ... pipeline 14 ... pipeline 15 ... choke valve
16 ... heat pump compressor 17 ... pipeline 18 ... pipeline
19 ... control system
The specific embodiment
Below in conjunction with Fig. 1, Fig. 2 of accompanying drawing, heat pump sub-pressure high-efficient dryer of the present invention and the method for utilizing this heater to heat are described in further detail.
Heat pump sub-pressure high-efficient dryer of the present invention, please refer to Fig. 1, Fig. 2, it comprises casing 1, negative-pressure vacuum pump 9, heat pump compressor 16, evaporimeter 12, choke valve 15, control system 19, temperature sensor, humidity sensor, pressure sensor (not shown in FIG.), wherein said casing 1 top outer is provided with control system 19, in casing, be provided with cylinder 2, cylinder 2 arranged outside have humidity sensor, pressure sensor, temperature sensor, cylinder 2 has hermatic door 3 in casing arranged outside, cylinder 2 tops are provided with condenser 6, condenser 6 tops are provided with centrifugal blower 7, described centrifugal blower is connected with the discharge pipe 4 in cylinder by pipeline 5, casing is connected with negative-pressure vacuum pump 9 by pipeline 8, negative-pressure vacuum pump 9 is connected with evaporimeter 12 by pipeline 10, evaporimeter 12 is connected with heat pump compressor 16 by pipeline 14, heat pump compressor 16 is connected with condenser 6 by pipeline 17, condenser 6 is connected with choke valve 15 by pipeline 18, choke valve 15 is connected with evaporimeter 12 by pipeline 13, evaporimeter bottom is provided with condensation-water drain 11.
On the discharge pipe 4 of heat pump sub-pressure high-efficient dryer of the present invention and cylinder 2, be equipped with equally distributed aperture, its concrete quantity and aperture are not particularly limited, its effect is that hot blast is evenly blown in cylinder, and making the steam in cylinder from cylinder, discharge smoothly and be extracted out by negative-pressure vacuum pump, those skilled in the art can specifically need to select suitable aperture and distribution according to it.
The invention also discloses the furnace drying method that utilizes above-mentioned heat pump sub-pressure high-efficient dryer to dry, with reference to figure 1, Fig. 2, it comprises the following steps:
Further, the thermal source of above-mentioned evaporimeter is selected from the discarded low-temperature heat source in kitchen, industrial waste low-temperature heat source, air heat source, solar source.
Further, the vapours of extracting out from negative-pressure vacuum pump 9 enters evaporimeter 12 by pipeline 10, and vapours becomes liquid, emits heat, and becomes distilled water and discharge from condensation-water drain 11.
The humidity sensor that uses in heat pump sub-pressure high-efficient dryer of the present invention, pressure sensor, temperature sensor (not drawing in the drawings take upper sensor), control system, conventional electronic devices in this area all, those skilled in the art can according to specific needs, start control system control or close drying machine drum, negative-pressure vacuum pump and heat pump compressor to complete drying course by setting uniform temperature, pressure, damp condition.In a technical scheme of the present invention, article to be dried are put into after cylinder, closed hermatic door, set the upper limit of a temperature by control system, a lowest temperature, be generally 50-70 degree Celsius, set higher limit of a low pressure limit value, set a humidity lower limit.When reaching, temperature sets after lower limit; article to be dried have uniform temperature; can reach the effect of high-temperature sterilization in advance; then control system is opened negative-pressure vacuum pump 16 and is vacuumized; when drying body chassis internal pressure during lower than low pressure limit system can automatically stop vacuumizing; open negative-pressure vacuum pump and continue to vacuumize when pressure is elevated to the above control system of higher limit again; can keep like this negative pressure state in dryer; but can not make again becomes vacuum state in dryer, can accomplish to protect article institutional framework to be dried not by vacuum breaking.This low pressure limit value can be according to actual needs, and for example drying time, the fragile degree of article to be dried are set.If need flash baking and article to be dried not fragile, can set lower low pressure limit, if otherwise, set higher low pressure limit.In vacuumizing, in the time that temperature exceedes higher limit, control system closing heat pump compressor, stop heating, prevent excess Temperature.The selection of temperature bound choose reasonable according to actual needs, if at high temperature easily damage of article to be dried can arrange lower bound temperature.Otherwise if higher bound temperature can be set.In the time that humidity in dryer is reduced to a certain degree or keep invariable, prove to dry to complete, now control system finishes treat the heating of drying article and vacuumize, and completes drying course.
The thermal source (not shown in FIG.) of above-mentioned evaporimeter is selected from the discarded low-temperature heat source in kitchen, industrial waste low-temperature heat source, air heat source solar energy etc., above-mentioned low temperature is discarded thermal source liquid if, be incorporated in evaporimeter by loop, in evaporimeter, complete exchange heat.Such as various kitchen waste waters, industrial wastewater, industrial waste oil, solar water etc.If gas thermal source can be introduced evaporimeter by loop, or directly evaporimeter is contacted with thermal source gas, complete exchange heat.As evaporimeter can be placed in air, in the higher situation of temperature, directly utilize air in heat, or by loop, exhaust steam in exhaust steam, kitchen in factory is introduced in evaporimeter by loop.And the vapours of extracting out from negative-pressure vacuum pump 9 enters evaporimeter 12 by pipeline 10 simultaneously, flow out from condensate pipe 11 becoming distilled water after thermal release, the steam that wherein the discarded low-temperature heat source in evaporimeter, industrial waste low-temperature heat source, air heat source, solar source etc. and negative-pressure vacuum pump are extracted out is two thermal source loops independently separately, does not interfere with each other.Therefore heat pump sub-pressure high-efficient dryer of the present invention can effectively utilize the heat of the vapours of extracting out in negative-pressure vacuum pump 9 in utilizing various low-temperature heat sources, energy efficient, reduce discharge, and the distilled water that becomes of vapours can be used as byproduct and further utilizes.
From above-mentioned embodiment, by technical scheme of the present invention, adopt the discarded low-temperature heat source in kitchen, industrial waste low-temperature heat source, air heat source, and the low-temperature heat source such as negative-pressure vacuum pump 9 vapours of extracting out, and promote steam evaporation by negative pressure, therefore make article to be dried in cylinder with water rapid evaporation at a lower temperature, therefore its energy efficient, reduce hot driving, environmental friendliness, drying rate is fast, and do not injure material to be dried, and take full advantage of from casing 1 in the vapours of extracting out through negative-pressure vacuum pump 9 with part heat improve heat utilization efficiency, simultaneously because the vapours in negative-pressure vacuum pump 9 is by evaporimeter 12, emitting heat becomes liquid and has therefore also obtained distilled water, can further utilize to save water source.
Above-mentionedly only several specific embodiments in the present invention are illustrated; but can not serve as protection scope of the present invention; every equivalence variation of having done according to the design spirit in the present invention or modification or equal proportion zoom in or out etc., all should think and fall into protection scope of the present invention.
Claims (6)
1. a heat pump sub-pressure high-efficient dryer, it is characterized in that: this heat pump sub-pressure high-efficient dryer comprises casing (1), negative-pressure vacuum pump (9), heat pump compressor (16), evaporimeter (12), choke valve (15), control system (19), temperature sensor, humidity sensor, pressure sensor, wherein said casing (1) top outer is provided with control system (19), in casing, be provided with cylinder (2), cylinder (2) arranged outside has humidity sensor, pressure sensor, temperature sensor, cylinder (2) has hermatic door (3) in casing arranged outside, cylinder (2) top is provided with condenser (6), condenser (6) top is provided with centrifugal blower (7), described centrifugal blower is connected with the discharge pipe (4) in cylinder by pipeline (5), casing is connected with negative-pressure vacuum pump (9) by pipeline (8), negative-pressure vacuum pump (9) is connected with evaporimeter (12) by pipeline (10), evaporimeter (12) is connected with heat pump compressor (16) by pipeline (14), heat pump compressor (16) is connected with condenser (6) by pipeline (17), condenser (6) is connected with choke valve (15) by pipeline (18), choke valve (15) is connected with evaporimeter (12) by pipeline (13), evaporimeter bottom is provided with condensation-water drain (11).
2. heat pump sub-pressure high-efficient dryer according to claim 1, is characterized in that: described discharge pipe is uniformly distributed air outlet on (4).
3. heat pump sub-pressure high-efficient dryer according to claim 1, is characterized in that: described discharge pipe is uniformly distributed air outlet on (4).
4. the method for utilizing the heat pump sub-pressure high-efficient dryer described in the arbitrary claim of claim 1-3 to dry, is characterized in that: comprise the following steps:
Step 1, in cylinder (2), add article to be dried, open control system, and design temperature upper and lower bound, setting pressure upper and lower bound, and set humidity lower limit, now control system is opened heat pump compressor (16) heat in evaporimeter (12) is passed to condenser (6), the centrifugal blower (7) on condenser (6) top is sent into heat in cylinder (2) by pipeline (5) and air outlet (4), article in heated roller (2), simultaneously the gas in condenser (6) becomes liquid and emits and pass through choke valve (15) by pipeline (18) after heat and pipeline (13) reenters in evaporimeter (12), and in evaporimeter (12), again absorb heat and become gas, enter heat pump compressor (16) by pipeline (14) and complete circulation, the higher limit that reaches setting when temperature sensor measurement temperature is closed heat pump compressor (16), thereby keep temperature in steady state, avoid excess Temperature,
Step 2, when reaching under design temperature, cylinder (2) temperature outside sensor mensuration temperature prescribes a time limit, open negative-pressure vacuum pump (9) by control system and start to extract the gas in casing (1), when determination of pressure sensor is less than low pressure limit value to pressure, control system is closed negative-pressure vacuum pump (9), when measure pressure be greater than higher limit survey again open vacuum pressure pump (9) thus keep negative pressure state in casing;
Step 3, gas in the casing (1) that negative-pressure vacuum pump (9) extracts is sent in evaporimeter (12) by pipeline (10), and emit heat and become liquid, liquid is discharged and is obtained distilled water from condensation-water drain (11)
Step 4, when humidity value in humidity sensor measuring cylinder reaches preset lower limit, closes heat pump compressor (16) and negative-pressure vacuum pump (9) by control system, completes article and dries.
5. furnace drying method according to claim 4, is characterized in that: the thermal source of described evaporimeter is selected from the discarded low-temperature heat source in kitchen, industrial waste low-temperature heat source, air heat source, solar source.
6. according to the furnace drying method described in claim 4 or 5, it is characterized in that: the vapours of extracting out from negative-pressure vacuum pump (9) enters evaporimeter (12) by pipeline (10), vapours becomes liquid, emit heat, and become distilled water and discharge from condensation-water drain (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210553281.4A CN103774396A (en) | 2012-12-19 | 2012-12-19 | Heat pump negative pressure efficient drying machine and drying method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210553281.4A CN103774396A (en) | 2012-12-19 | 2012-12-19 | Heat pump negative pressure efficient drying machine and drying method thereof |
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| Publication Number | Publication Date |
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| CN103774396A true CN103774396A (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210553281.4A Withdrawn CN103774396A (en) | 2012-12-19 | 2012-12-19 | Heat pump negative pressure efficient drying machine and drying method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054253A (en) * | 2015-07-27 | 2015-11-18 | 广西鹿寨方田贸易有限公司 | Method for baking siraitia grosvenorii |
| CN106868834A (en) * | 2017-02-17 | 2017-06-20 | 无锡小天鹅股份有限公司 | Straight-line dryer and its control method |
| CN108131905A (en) * | 2017-12-20 | 2018-06-08 | 广州凯能电器科技有限公司 | The control system and control method of a kind of heat pump dryer |
| CN108405590A (en) * | 2018-04-23 | 2018-08-17 | 永清环保股份有限公司 | High boiling point organic compound contaminated soil remediation system adopting recirculating and restorative procedure |
| CN108679999A (en) * | 2018-03-16 | 2018-10-19 | 珠海格力电器股份有限公司 | A kind of control method of drying machine, device and drying machine |
| CN110318234A (en) * | 2018-03-30 | 2019-10-11 | 青岛海尔洗衣机有限公司 | A kind of dryer |
| CN112481879A (en) * | 2020-11-23 | 2021-03-12 | 舒城娃娃乐儿童用品有限公司 | Double-sided cooling and shaping mechanism for production of non-woven cotton material |
| CN113235268A (en) * | 2021-03-31 | 2021-08-10 | 海信（山东）冰箱有限公司 | Drying and washing integrated machine control method and drying and washing integrated machine |
| CN114438758A (en) * | 2020-11-03 | 2022-05-06 | 苏州三星电子有限公司 | Heat pump clothes dryer and method for preventing wrinkles and quickly drying clothes |
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| JPS5743799A (en) * | 1980-07-01 | 1982-03-11 | Maruten Jiyannmarii | Pressure drop drier |
| CN1165216A (en) * | 1996-09-25 | 1997-11-19 | 陈清彬 | Vacuum drying method for clothes and its device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054253A (en) * | 2015-07-27 | 2015-11-18 | 广西鹿寨方田贸易有限公司 | Method for baking siraitia grosvenorii |
| CN106868834A (en) * | 2017-02-17 | 2017-06-20 | 无锡小天鹅股份有限公司 | Straight-line dryer and its control method |
| CN108131905A (en) * | 2017-12-20 | 2018-06-08 | 广州凯能电器科技有限公司 | The control system and control method of a kind of heat pump dryer |
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| CN108679999B (en) * | 2018-03-16 | 2020-06-02 | 珠海格力电器股份有限公司 | Control method and device of drying machine and drying machine |
| CN110318234A (en) * | 2018-03-30 | 2019-10-11 | 青岛海尔洗衣机有限公司 | A kind of dryer |
| CN108405590A (en) * | 2018-04-23 | 2018-08-17 | 永清环保股份有限公司 | High boiling point organic compound contaminated soil remediation system adopting recirculating and restorative procedure |
| CN114438758A (en) * | 2020-11-03 | 2022-05-06 | 苏州三星电子有限公司 | Heat pump clothes dryer and method for preventing wrinkles and quickly drying clothes |
| CN112481879A (en) * | 2020-11-23 | 2021-03-12 | 舒城娃娃乐儿童用品有限公司 | Double-sided cooling and shaping mechanism for production of non-woven cotton material |
| CN113235268A (en) * | 2021-03-31 | 2021-08-10 | 海信（山东）冰箱有限公司 | Drying and washing integrated machine control method and drying and washing integrated machine |
| CN113235268B (en) * | 2021-03-31 | 2023-04-18 | 海信冰箱有限公司 | Drying and washing integrated machine control method and drying and washing integrated machine |
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Application publication date: 20140507 |