CN104695193A - Heat pump clothes dryer and control method thereof - Google Patents
Heat pump clothes dryer and control method thereof Download PDFInfo
- Publication number
- CN104695193A CN104695193A CN201510079417.6A CN201510079417A CN104695193A CN 104695193 A CN104695193 A CN 104695193A CN 201510079417 A CN201510079417 A CN 201510079417A CN 104695193 A CN104695193 A CN 104695193A
- Authority
- CN
- China
- Prior art keywords
- heat pump
- clothes dryer
- pump clothes
- relief arrangement
- condenser
- 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.)
- Pending
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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
- D06F58/206—Heat pump arrangements
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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
- D06F58/30—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
- 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
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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
- 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 provides a heat pump clothes dryer which comprises a compressor, a condenser, a throttling device and an evaporator, wherein the compressor, the condenser, the throttling device and the evaporator are communicated with one another in sequence to form a refrigerant system. The heat pump clothes dryer further comprises an unloading device, wherein the unloading device is connected between the high-pressure end of the refrigerant system and the low-pressure end of the refrigerant system in parallel. The invention further provides a control method of the heat pump clothes dryer. As the heat pump clothes dryer provided by the invention is provided with the unloading device, through controlling the opening and the closing of the unloading device, the high and low pressure difference of the refrigerant system of the heat pump clothes dryer at the clothes drying later stage is reduced, the condensing temperature is reduced, the cloth drying efficiency cannot be influenced, the energy consumption of the system is reduced, and the influence of over-high temperature entering a drying chamber on the service lives of clothes is avoided.
Description
Technical field
The present invention relates to dryer field, particularly relate to a kind of heat pump clothes dryer and control method thereof.
Background technology
Common heat pump clothes dryer operation principle as shown in Figure 1.Common heat pump dryer system is divided into two circulations, and one is the circulation of coolant system, and another is humid air cycle.Coolant system comprises compressor 10, condenser 20, throttling arrangement 30 and evaporimeter 40; Air circulation system is made up of hothouse 50, air channel 60 and circulating fan 70 etc.After heat pump clothes dryer is opened, humid air in airtight air channel 60 is under the driving of circulating fan 70, through condenser 20 also absorptive condenser 20 liberated heat, own temperature raises, and relative humidity reduces, then hothouse 50 is entered, to the clothing heat release in hothouse 50, clothing temperature raises and discharges steam and absorbed by humid air, and humid air own temperature reduces, water capacity increases, afterwards again through evaporator 40 cool-down dehumidification, complete a dry cycle.
In heat pump clothes dryer running, the moisture content of the clothing in hothouse 50 is constantly change, the drying later stage, on the one hand, along with the moisture in clothing is constantly taken away by air, moisture is slow from the inner speed goes to clothing surface migration and finally taken away by air of clothing, is far smaller than the speed that evaporimeter 40 dehumidifies, therefore, refrigerating capacity is more than relative rich the drying later stage; On the other hand, the later stage of drying, along with clothing moisture content is more and more less, air after condenser 20 heats temperature in hothouse 50 reduces amplitude and also reduces, and the air themperature entering evaporimeter 40 and condenser 20 constantly raises, and causes condensation temperature and delivery temperature to raise obviously, system power dissipation also constantly increases, meanwhile, high condensation temperature causes clothing by the air dewetting of high temperature, also can affect the life-span of clothing.
Summary of the invention
For the problem that above-mentioned heat pump clothes dryer drying later stage condensation temperature is high, the object of this invention is to provide a kind of can according to the heat pump clothes dryer of the condensation temperature real-time regulation system load in drying later stage and control method thereof.
Technical scheme of the present invention is as follows:
A kind of heat pump clothes dryer, comprise compressor, condenser, throttling arrangement and evaporimeter, described compressor, described condenser, described throttling arrangement are communicated with formation coolant system successively with described evaporimeter, described heat pump clothes dryer also comprises relief arrangement, and described relief arrangement is connected in parallel between the high-pressure side of described coolant system and the low-pressure end of described coolant system.
Wherein in an embodiment, one end of described relief arrangement is connected between the outlet of described compressor and the entrance of described condenser, and the other end of described relief arrangement is connected between the outlet of described evaporimeter and the entrance of described compressor.
Wherein in an embodiment, one end of described relief arrangement is connected between the outlet of described condenser and the entrance of described throttling arrangement, and the other end of described relief arrangement is connected between the outlet of described throttling arrangement and the entrance of described evaporimeter.
Wherein in an embodiment, described relief arrangement comprises control valve and capillary, and described control valve and described capillary are connected in series.
Wherein in an embodiment, described relief arrangement comprises control valve and short-tube throttle valve, and described control valve and described short-tube throttle valve are connected in series.
Wherein in an embodiment, described heat pump clothes dryer also comprises the control device controlling described relief arrangement, described control device comprises controller, aridity checkout gear and temperature-detecting device, described aridity checkout gear and described temperature-detecting device are all electrically connected with described controller, and described controller is also electrically connected with the control valve of described relief arrangement.
Wherein in an embodiment, described aridity checkout gear is arranged in the hothouse of described heat pump clothes dryer, and described temperature-detecting device is arranged on described condenser.
Wherein in an embodiment, described temperature-detecting device is arranged on the middle part of described condenser.
The present invention also provides a kind of control method of above-mentioned heat pump clothes dryer, comprises the steps:
S100: the moisture content detecting clothing in hothouse, enters step S200 when described moisture content is less than the first preset value;
S200: the condensation temperature detecting condenser, opens relief arrangement when described condensation temperature is greater than the second preset value and enters step S300;
S300: close described relief arrangement when described condensation temperature is less than the 3rd preset value.
Wherein in an embodiment, described second preset value is 30 DEG C to 70 DEG C, and described 3rd preset value is 20 DEG C to 50 DEG C, and described second preset value is greater than described 3rd preset value; Described first preset value is 20% to 80%.
The invention has the beneficial effects as follows: heat pump clothes dryer of the present invention is provided with relief arrangement, by controlling the opening and closing of relief arrangement, reduce the height pressure reduction of the coolant system of drying later stage heat pump clothes dryer, reduce condensation temperature, drying efficiency can not be affected, reduce system power dissipation, the temperature avoiding entering hothouse is too high and affect the clothing life-span.
Accompanying drawing explanation
Fig. 1 is the overall schematic of existing heat pump clothes dryer;
Fig. 2 is the overall schematic of an embodiment of heat pump clothes dryer of the present invention
Fig. 3 is the overall schematic of the control device of the heat pump clothes dryer shown in Fig. 2;
Fig. 4 is the schematic flow sheet of the control method of heat pump clothes dryer of the present invention.
Detailed description of the invention
In order to make the object of heat pump clothes dryer of the present invention and control method thereof, technical scheme and advantage clearly understand, below in conjunction with concrete drawings and the specific embodiments, the present invention is further elaborated.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
See Fig. 2, heat pump clothes dryer in the present invention, comprise coolant system and air circulation system, described air circulation system is by air channel 600, be arranged on circulating fan 700 in air channel 600 and hothouse 800 is formed, described coolant system comprises compressor 100, condenser 200, throttling arrangement 300, evaporimeter 400 and relief arrangement 500, wherein compressor 100 is communicated with condenser 200, condenser 200 is communicated with throttling arrangement 300, throttling arrangement 300 is communicated with evaporimeter 400, evaporimeter 400 is communicated with compressor 100, that is compressor 100, condenser 200, throttling arrangement 300 is communicated with successively with evaporimeter 400, wherein relief arrangement 500 is connected in parallel between the high-pressure side of described coolant system and the low-pressure end of described coolant system.See Fig. 2, the relief arrangement 500 in the present embodiment is arranged in parallel with compressor 100, or relief arrangement 500 is arranged in parallel with throttling arrangement 300.Relief arrangement 500 in the present embodiment can reduce the height pressure reduction of coolant system, thus reduces energy consumption and the condensation temperature of coolant system, has saved the energy.
Wherein, see Fig. 2, described relief arrangement 500 comprises control valve 510 and capillary 520, and described control valve 510 and described capillary 520 are connected in series.Control valve 510 is for controlling the break-make of capillary 520, and capillary 520 can reduce the pressure differential between condenser refrigerant and evaporator refrigerant, while guarantee refrigerant vapour has higher pressure in condenser, reduce energy consumption.Capillary in the present embodiment is generally made up of the material that thermal conductivity is good, and the capillary in the present embodiment is a thin and long copper tube, and internal diameter is generally 0.5 ~ 1mm, length be 0.5 ~ 4m not etc.
Or the relief arrangement in the present invention also can be the control valve and short-tube throttle valve that are connected in series, and control valve is for controlling the opening and closing of short-tube throttle valve.Short-tube throttle valve refers to that length and internal diameter are than in 3 to 20 scopes and internal diameter is less than the tubule section of 2mm.
Control valve in the present invention can be electric expansion valve or electromagnetic valve.
In coolant system, compressor low-pressure end absorbs the gas phase refrigerant of the low-temp low-pressure in evaporimeter, the overheated refrigerant of High Temperature High Pressure is become after compressor compresses, then the liquid phase refrigerant of temperature in high pressure is cooled within the condenser, after throttling arrangement, become the two-phase refrigerant of low-temp low-pressure and absorb heat in evaporator evaporation, complete a kind of refrigeration cycle, especially, in the drying later stage, due to the rising of condensation temperature, delivery temperature is caused to raise, refrigeration system power consumption increases and drying temperature raises, be unfavorable for system cloud gray model, adverse effect is caused to the clothing life-span simultaneously.Now, the relief arrangement 500 in the present embodiment starts off-load.
In heat pump clothes dryer running, the moisture content of the clothing in hothouse is constantly change, the drying later stage, on the one hand, along with the moisture in clothing is constantly taken away by air, moisture is slow from the inner speed goes to clothing surface migration and finally taken away by air of clothing, be far smaller than the speed that evaporimeter 400 dehumidifies, therefore, drying later stage refrigerating capacity is more than relative rich, now reduces the refrigerating capacity of coolant system within the specific limits, can not affect drying effect, and the operation power consumption of coolant system can be reduced, economize energy; On the other hand, the later stage of drying, along with clothing moisture content is more and more less, air after condenser 200 heats temperature in hothouse 700 reduces amplitude and also reduces, and the air themperature entering evaporimeter 400 and condenser 200 constantly raises, and causes condensation temperature and delivery temperature to raise obviously, system power dissipation also constantly increases, meanwhile, high condensation temperature causes clothing by the air dewetting of high temperature, also can affect the life-span of clothing.Therefore, the condensation temperature reducing refrigeration system in the drying later stage also can economize energy, avoids damaging clothing.In order to reduce the refrigerating capacity of coolant system and reduce condensation temperature, the heat pump clothes dryer in the present embodiment is provided with relief arrangement 500.
Preferably, as a kind of embodiment, the high-pressure side in the present embodiment is between the outlet of compressor 100 and the entrance of described condenser 200, and low-pressure end is between the outlet of described evaporimeter 400 and the entrance of described compressor 100; Therefore one end of described relief arrangement 500 is connected to certain position between the outlet of described compressor 100 and the entrance of described condenser 200, and the other end of described relief arrangement 500 is connected to certain position between the outlet of described evaporimeter 400 and the entrance of described compressor 100.
Preferably, as another kind of embodiment, high-pressure side in the present embodiment is between the outlet of described condenser 200 and the entrance of described throttling arrangement 300, low-pressure end is between the outlet of described throttling arrangement 300 and the entrance of described evaporimeter 400, therefore one end of the described relief arrangement 500 in the present embodiment is connected to certain position between the outlet of described condenser 200 and the entrance of described throttling arrangement 300, and the other end of described relief arrangement 500 is connected to certain position between the outlet of described throttling arrangement 300 and the entrance of described evaporimeter 400.
Further, the heat pump clothes dryer in the present invention also comprises the control device controlling relief arrangement 500 and run.See Fig. 3, described control device comprises controller 910, aridity checkout gear 920 and temperature-detecting device 930, described aridity checkout gear 920 and described temperature-detecting device 930 are all electrically connected with described controller 910, and described controller 910 is also electrically connected with the control valve 510 of described relief arrangement 500.Aridity checkout gear 920 in the present embodiment is arranged in hothouse 800, for detecting the moisture content of clothing.Temperature-detecting device 930 is arranged on condenser 200, for detecting the condensation temperature of condenser.Heat pump clothes dryer in the present embodiment can regulate the opening and closing of relief arrangement automatically according to clothing moisture content and condensation temperature.Controller 910 is PLC.Aridity checkout gear in the present embodiment is aridity detector, and temperature-detecting device is temperature monitor or temperature-sensitive bag.
More excellent, said temperature checkout gear is arranged on the middle part of condenser.Make the condensation temperature that detects more accurate like this.Accordingly, see Fig. 4, the present invention also provides a kind of control method of above-mentioned heat pump clothes dryer, and it comprises the steps:
S100: detect the moisture content of clothing in hothouse 800 by aridity checkout gear 920 and judge whether described moisture content is less than the first preset value, entering step S200 when moisture content is less than the first preset value; Define the first condition of the unlatching of relief arrangement 500 in this step, namely the drying later stage, along with the carrying out of clothes drying process, the moisture content of clothing is more and more lower; In this step, the moisture content of the clothing detected is sent to controller 910 by aridity checkout gear 920 in real time, and controller 910 judges whether moisture content is less than the first preset value;
S200: detect the condensation temperature of condenser 200 by temperature-detecting device 910 and judge whether described condensation temperature is greater than the second preset value, opens relief arrangement 500 when condensation temperature is greater than the second preset value and enters step S300; This step defines the second condition that relief arrangement is opened, i.e. high condensation temperature; Start to detect condensation temperature in the drying later stage in this step, the condensation temperature detected is sent to controller 910 by temperature-detecting device 910, whether controller 910 interpretation condensation temperature is greater than the second preset value, if be greater than the second preset value, then opens relief arrangement 500; Relief arrangement 500 unlatching and controller 910 power on to control valve 510, open control valve;
S300: controller 910 continues to judge whether described condensation temperature is less than the 3rd preset value, closes described relief arrangement 500 when condensation temperature is less than the 3rd preset value.Close relief arrangement 500 i.e. controller 910 to control valve 510 power-off.
Preferably, described second preset value is 30 DEG C to 70 DEG C, and described 3rd preset value is 20 DEG C to 50 DEG C, and described second preset value is greater than described 3rd preset value.
Preferably, described first preset value is 20% to 80%.That is relief arrangement of the present invention was opened in the drying later stage, and drying need not open relief arrangement early stage, arranged like this and can ensure drying efficiency, reduce the energy consumption of heat pump clothes dryer simultaneously.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claim.
Claims (10)
1. a heat pump clothes dryer, comprise compressor (100), condenser (200), throttling arrangement (300) and evaporimeter (400), described compressor (100), described condenser (200), described throttling arrangement (300) and described evaporimeter (400) are communicated with formation coolant system successively, it is characterized in that, described heat pump clothes dryer also comprises relief arrangement (500), and described relief arrangement (500) is connected in parallel between the high-pressure side of described coolant system and the low-pressure end of described coolant system.
2. heat pump clothes dryer according to claim 1, it is characterized in that, one end of described relief arrangement (500) is connected between the outlet of described compressor (100) and the entrance of described condenser (200), and the other end of described relief arrangement (500) is connected between the outlet of described evaporimeter (400) and the entrance of described compressor (100).
3. heat pump clothes dryer according to claim 1, it is characterized in that, one end of described relief arrangement (500) is connected between the outlet of described condenser (200) and the entrance of described throttling arrangement (300), and the other end of described relief arrangement (500) is connected between the outlet of described throttling arrangement (300) and the entrance of described evaporimeter (400).
4. heat pump clothes dryer according to claim 1, it is characterized in that, described relief arrangement (500) comprises control valve (510) and capillary (520), and described control valve (510) and described capillary (520) are connected in series.
5. heat pump clothes dryer according to claim 1, is characterized in that, described relief arrangement (500) comprises control valve and short-tube throttle valve, and described control valve and described short-tube throttle valve are connected in series.
6. the heat pump clothes dryer according to claim 1 to 5 any one, it is characterized in that, described heat pump clothes dryer also comprises the control device controlling described relief arrangement, described control device comprises controller (910), aridity checkout gear (920) and temperature-detecting device (930), described aridity checkout gear (920) and described temperature-detecting device (930) are all electrically connected with described controller (910), and described controller (910) is also electrically connected with the control valve (510) of described relief arrangement (500).
7. heat pump clothes dryer according to claim 6, it is characterized in that, described aridity checkout gear (920) is arranged in the hothouse (800) of described heat pump clothes dryer, and described temperature-detecting device (930) is arranged on described condenser (200).
8. heat pump clothes dryer according to claim 7, is characterized in that, described temperature-detecting device (930) is arranged on the middle part of described condenser (200).
9. the control method of the heat pump clothes dryer described in claim 1 to 8 any one, is characterized in that, comprises the steps:
S100: the moisture content detecting clothing in hothouse (800), enters step S200 when described moisture content is less than the first preset value;
S200: the condensation temperature detecting condenser (200), opens relief arrangement (500) when described condensation temperature is greater than the second preset value and enters step S300;
S300: close described relief arrangement (500) when described condensation temperature is less than the 3rd preset value.
10. control method according to claim 9, is characterized in that, described second preset value is 30 DEG C to 70 DEG C, and described 3rd preset value is 20 DEG C to 50 DEG C, and described second preset value is greater than described 3rd preset value; Described first preset value is 20% to 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079417.6A CN104695193A (en) | 2015-02-12 | 2015-02-12 | Heat pump clothes dryer and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079417.6A CN104695193A (en) | 2015-02-12 | 2015-02-12 | Heat pump clothes dryer and control method thereof |
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| CN104695193A true CN104695193A (en) | 2015-06-10 |
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| CN201510079417.6A Pending CN104695193A (en) | 2015-02-12 | 2015-02-12 | Heat pump clothes dryer and control method thereof |
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| CN106440545A (en) * | 2015-08-10 | 2017-02-22 | 杭州三花家电热管理系统有限公司 | Refrigerant system, drying device and control method of refrigerant system |
| CN106567237A (en) * | 2015-10-10 | 2017-04-19 | 杭州三花家电热管理系统有限公司 | Refrigerant system, drying device, and control method of drying device |
| WO2018001158A1 (en) * | 2016-06-27 | 2018-01-04 | 青岛海尔滚筒洗衣机有限公司 | Method for regulating quantity of condensing mediums according to change in air temperature of egress cylinder of clothes dryer |
| CN108951047A (en) * | 2017-05-17 | 2018-12-07 | 青岛海尔滚筒洗衣机有限公司 | The heat pump system and dryer and control method of a kind of adjustable system loading |
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Application publication date: 20150610 |