CN103103736A - Clothes drying system based on carbon dioxide transcritical heat pump cycle system - Google Patents
Clothes drying system based on carbon dioxide transcritical heat pump cycle system Download PDFInfo
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- CN103103736A CN103103736A CN2013100229938A CN201310022993A CN103103736A CN 103103736 A CN103103736 A CN 103103736A CN 2013100229938 A CN2013100229938 A CN 2013100229938A CN 201310022993 A CN201310022993 A CN 201310022993A CN 103103736 A CN103103736 A CN 103103736A
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Abstract
A clothes drying system based on a carbon dioxide transcritical heat pump cycle system comprises a carbon dioxide transcritical heat pump cycle system, an air circulation system, a drying room, a control system and a system shell. A compressor, a gas cooler, a subcooler, a once throttling gear, a precooler, a secondary throttling gear, an evaporator and a liquid-gas separator are sequentially connected to form the heat pump cycle system through pipelines. A circulating fan, a gas cooler air inlet, a drying room air inlet, a filter, a precooler air inlet and an evaporator air outlet are sequentially connected to form the air circulation system through air ducts. The clothes drying system based on a carbon dioxide transcritical heat pump cycle system has the advantages of causing no harm to environment, being capable of providing wide temperature scope, suitable for different fabrics, and capable of reducing throttling loss of the carbon dioxide and improving circulation efficiency of the system.
Description
Technical field
The invention belongs to technical field of heat pumps, relate in particular to CO
2across critical heat pump circulating system and the clothes drying device of applying this circulatory system.
Background technology
Heat pump techniques is as a kind of new energy technology, different from electrical heating, PTC heating homenergic conversion regime, is a kind of Energy Transfer Equipment.Be that to consume the part energy be cost, draw heat from low level heat energy then passes to high-order thermal source together with the heat of the energy of consumption and absorption, realizes the purpose of heating.Heat pump techniques is widely used as a kind of mode of winter heating in air conditioning, conventional heat pump circulating system comprises compressor, condenser, throttling arrangement, evaporimeter, four-way change-over valve and control system, each parts link together by pipeline, conversion by four-way change-over valve, heat pump can be freezed and be heated circulation, cold-producing medium adopts HCFCs and HFCs compounds, and the most frequently used is the subcritical cycle of HCFC22.
Dryer is more universal in Japan and western developed country.In Japan, just there are family's dryer and Washing machine matched more than 70% to use.In China, especially at the southern area had a humid climate, along with the raising of people's living standard, also progressively produced social demand.
Existing dryer can be divided into different classifications.Can be divided into combustion type, electric-heating-wire-heating formula, PTC from limitting warm element heating type according to drying the energy used.Wherein, combustion gas type clothes dryer is rare in China, but very popular the America and Europe.There is following problem in existing dryer: 1. energy consumption index is undesirable.At first, be the all-fresh air form, to discharge in air and still contain a large amount of heat energy, this can cause the waste of the energy; Secondly, existing dryer, no matter be electrical heating or PTC heating, is energy conversion device, and in clothing, moisture evaporates needed heat fully by electric energy conversion.2. the clothes drying process operating temperature is high, generally, more than 60 ℃, the high-grade dress materials such as silk, cashmere is had to very large infringement, has limited its scope of application.3. dryer is usually used in rainy weather, and now ambient humidity is high, but the dryer of some type will absorb moisture humid air afterwards discharged to indoor, will further worsen the room air condition.Some type dryer utilize exhaust duct by air exhausting to outdoor, but floor space is large like this, affect indoor attractive in appearance, and all comparatively inconvenience of installation.The dryer of some type utilizes the circulating air in body, the steam be evaporated in clothing by specific condenser condenses Cheng Shui, then the outflow of the drainpipe in slave.Although this mode generally can not impact indoor air environment, because experienced a condensation process, cause it than exhaust, to want power consumption (or consumption
Can).
In prior art also the handlebar heat pump techniques be applied to the case in dryer, patent 200610153406.9 discloses a kind of heat pump clothes dryer, adopts conventional vapor-compression refrigerant cycle that the drying heat is provided; And by introducing new wind and discharging hot blast and regulate the drying temperature.Patent 200610137612.0 discloses a kind ofly makes as a whole telescopic heat pump clothes dryer by heat pump.Patent 200910038595.9 discloses a kind of integrated air-conditioned clothes dryer, utilizes the heat of air conditioner heat pump system to realize clothes drying function.Patent 200980104497.9 discloses the electrically heated dryer of heat pump series connection secondary.The deficiency of the dryer of above-mentioned using heat pump technology is; Although be all, utilize heat pump to realize the energy circulation of drying, but its heat pump is all conventional subcritical steam compression refrigeration circulation, most HCFC22, HFC134a cold-producing mediums of using, the HCFC22 cold-producing medium has destruction to ozone layer, developed country has limited use, and China does not allow after the year two thousand thirty to use yet, although HFC134a does not destroy ozone layer, but the GWP value is but 1200, also belongs to transitional product.The heat pump cycle of HCFC22, HFC134a simultaneously, limited by refrigerant discharge temperature, the air themperature of general drying is all below 50 ℃, the drying time is longer, and applicable scope is smaller, and, because heat pump cycle caloric receptivity and thermal discharge are unbalanced, so can't realize energy balance while adopting the enclosed air circulation, if not in addition auxiliary balance can cause that temperature raises, job insecurity, to indoor environment, can have a certain impact.
Summary of the invention
The objective of the invention is the problem existed for existing prior art, a kind of employing CO is provided
2as the clothes drying device of the heat pump circulating system of cold-producing medium, environmental sound, can provide broad temperature range, adapts to different fabrics, can effectively reduce CO
2restriction loss, improve systemic circulation efficiency.
Technical solution of the present invention is: based on CO
2cloth drying system across critical heat pump circulating system, comprise CO
2across critical heat pump circulating system, air circulation system, hothouse, control system and casing, CO is installed in casing
2across critical heat pump circulating system, air circulation system and hothouse, CO
2comprise compressor, cooler, throttling arrangement, evaporimeter and gas-liquid separator across critical heat pump circulating system, it is characterized in that described CO
2cooler across critical heat pump circulating system comprises gas cooler, subcooler and precooler, and throttling arrangement comprises throttling arrangement and secondary throttling gear, CO
2across critical heat pump circulating system, by following, connected and composed: the compressor air-discharging end is connected with the gas cooler refrigerant inlet, the gas cooler refrigerant outlet is connected with the subcooler refrigerant inlet, the subcooler refrigerant outlet is connected with a throttling arrangement import, a throttling arrangement outlet is connected with the precooler refrigerant inlet, precooler bottom refrigerant outlet is connected with the secondary throttling gear import, the secondary throttling gear outlet is connected with evaporator refrigerant inlet, the evaporator refrigerant outlet is connected with the gas-liquid separator import, the gas-liquid separator outlet is connected with the compressor air suction end, precooler top refrigerant outlet is connected with compressor secondary suction end or intermediate cavity,
Described air circulation system comprises circulating fan, filter and air channel, air circulation system is connected and composed by following: the circulating fan air outlet is connected with the gas cooler air intlet, the gas cooler air outlet slit is connected with the hothouse air intlet, the hothouse air outlet slit is connected with the filter import, the filter outlet is connected with the precooler air intlet, the precooler air outlet slit is connected with the air intlet of evaporimeter, and the evaporator air outlet is connected with the circulating fan entrance;
Control system comprises control module, temperature sensor, humidity sensor and guidance panel, control module is connected with temperature sensor, humidity sensor and guidance panel by circuit, temperature sensor and humidity sensor are arranged in hothouse, and control module is connected with air circulation system with heat pump circulating system by circuit.
Of the present invention based on CO
2across the cloth drying system of critical heat pump circulating system, it is characterized in that described evaporimeter and gas cooler are fin-tube heat exchangers, cold-producing medium flows in finned tube, and air flows outside finned tube.
Of the present invention based on CO
2across the cloth drying system of critical heat pump circulating system, it is characterized in that described subcooler is fin-tube heat exchanger or double pipe heat exchanger.
Of the present invention based on CO
2cloth drying system across critical heat pump circulating system, while it is characterized in that described subcooler is double pipe heat exchanger, cold-producing medium flows in inner tube, cooling agent flows at outer tube, it is promoted or flowed by the backheat form by external impetus that described cooling agent flows at outer tube, it is that the pipeline that gas-liquid separator is connected with compressor air suction disconnects that described backheat form flows, the outlet of gas-liquid separator is connected to the auxiliary cooling entrance of subcooler, the auxiliary coolant outlet of subcooler is connected to the air entry of compressor.
Of the present invention based on CO
2cloth drying system across critical heat pump circulating system, it is characterized in that described precooler is the shell-tube type structure, described shell-tube type structure is comprised of package and coil pipe, coil pipe is placed in package, and the head end of coil pipe and end stretch out outside package, is respectively air intlet and the air outlet slit of precooler, air flows in coil pipe, described package top has refrigerant inlet and top refrigerant outlet, and the package bottom has bottom refrigerant outlet, CO
2in package, flow.
Of the present invention based on CO
2across the cloth drying system of critical heat pump circulating system, it is characterized in that a described throttling arrangement and second throttle dress are a kind of of capillary, heating power expansion valve or electric expansion valve or the wherein combination of two kinds.
Of the present invention based on CO
2cloth drying system across critical heat pump circulating system, it is characterized in that described hothouse is placed in the casing medium position, hothouse is established door, except the hothouse door, other positions of hothouse all are placed in sealing in casing, have air admission hole on a sidewall of hothouse, filter is installed at the top of hothouse, the air entry of filter is in hothouse, gas outlet is outside hothouse, hothouse below bottom of shell is provided with enclosed baffle, be divided into cup and rear chamber by enclosed baffle, cup is independent sealed, compressor, a throttling arrangement, precooler, secondary throttling gear and gas-liquid separator are arranged in cup, gas cooler, evaporimeter and circulating fan are arranged on rear indoor, and circulating fan is placed between evaporimeter and gas cooler, subcooler is placed in the side that precooler top hothouse is not established air admission hole, between filter outlet and precooler, casing inner drying chamber has between air admission hole one side cavity and other side cavitys of hothouse and seals and separate, after bottom of shell, chamber has air admission hole one side cavity with casing inner drying chamber and communicates, and the cavity around casing inner drying chamber and hothouse form air circulation channel.
Of the present invention based on CO
2cloth drying system across critical heat pump circulating system, it is characterized in that three kinds of clothes-drying modes of described control module setting: low temperature, three kinds of patterns of middle gentle high temperature, the high temperature mode baking temperature is 60 ℃, middle temperature pattern baking temperature is 50 degree, the low temperature mode baking temperature is set as 40 degree, adjusts the heat pump Operation Conditions by control module and realizes.
Of the present invention based on CO
2across the cloth drying system of critical heat pump circulating system, its feature is frequency-changeable compressor at described compressor; Described circulating fan is frequency conversion fan.
Of the present invention based on CO
2across the cloth drying system of critical heat pump circulating system, it is characterized in that described hothouse air admission hole is comprised of the aperture be evenly distributed on the hothouse sidewall.
Compared with prior art the invention has the beneficial effects as follows: the present invention adopt Two-stage Compression, two-step throttle across critical heat pump endless form, and the cooling dry type for dry air of one-level throttling is cooling, two-step throttle is cooling for drying of air, utilize subcooler to carry out cold to supercritical refrigerant, restriction loss can reduce by 38%, and carry out heat exchange by regenerator, and fully reclaimed the waste heat of condensation end air, improve CO
2across the efficiency of critical cycle, improve range of operation;
CO
2as natural refrigerant, environmental sound, be the cold-producing medium that is applicable to development, and energy-conserving and environment-protective, meet the requirement of Green design.Utilize CO
2across the critical cycle heat release, make heat transfer process there is good Temperature Matching, drying air temperature is reached below 70 ℃, temperature range widely can be provided, can set different baking temperatures according to different fabrics, improve the heat pump operational efficiency.
The accompanying drawing explanation
The present invention has accompanying drawing four width, wherein
Fig. 1 is systematic schematic diagram of the present invention, and in figure, side circuit is heat pump circulating system, and the dotted line loop is air circulation system, and chain-dotted line is control system;
Fig. 2 drying device schematic diagram
Fig. 3 is the A-A cutaway view of Fig. 2
Fig. 4 precooler structural representation
In accompanying drawing: 1, compressor, 2, gas cooler, 3, subcooler, 3a, auxiliary cooling entrance, 3b, auxiliary coolant outlet, 3c, auxiliary cooling power, 4, a throttling arrangement, 5, precooler, 5a, package, 5b, coil pipe, 5c, refrigerant inlet, 5d, the top refrigerant outlet, 5e, the bottom refrigerant outlet, 5f, air intlet, 5g, air outlet slit, 6, secondary throttling gear, 7, gas-liquid separator, 8, evaporimeter, 8a, drainpipe, 9, hothouse, 10, filter, 11, circulating fan, 12, casing, 13, control module, 14, guidance panel, 15, temperature sensor, 16, humidity sensor.
The specific embodiment
Below by the specific embodiment and accompanying drawing, the invention will be further described.
Based on CO
2cloth drying system across critical heat pump circulating system comprises CO
2across critical heat pump circulating system, air circulation system, hothouse, control system and casing, CO is installed in casing
2across critical heat pump circulating system, air circulation system and hothouse, CO
2comprise compressor 1, condenser, throttling arrangement, evaporimeter 8 and gas-liquid separator 7 across critical heat pump circulating system, compressor is frequency-changeable compressor, and air circulation system comprises circulating fan 11, filter 10 and air channel, and circulating fan 11 is frequency conversion fans, CO
2condenser across critical heat pump circulating system comprises gas cooler 2, subcooler 3 and precooler 5, throttling arrangement comprises throttling arrangement 4 and secondary throttling gear 6, heat pump circulating system is connected and composed by following: compressor 1 exhaust end is connected with gas cooler 2 refrigerant inlet, gas cooler 2 refrigerant outlets are connected with the subcooler refrigerant inlet, the subcooler refrigerant outlet is connected with throttling arrangement 4 imports, throttling arrangement 4 outlets are connected with precooler 5 refrigerant inlet, precooler 5 bottom refrigerant outlets are connected with secondary throttling gear 6 imports, secondary throttling gear 6 outlets are connected with evaporimeter 8 refrigerant inlet, evaporimeter 8 refrigerant outlets are connected with gas-liquid separator 7 imports, gas-liquid separator 7 outlets are connected with the compressor air suction end, precooler 5 top refrigerant outlets are connected with compressor secondary suction end or intermediate cavity,
Air circulation system is connected and composed by following: circulating fan 11 air outlets are connected with gas cooler 2 air intlets, gas cooler 2 air outlet slits are connected with hothouse 9 air intlets, hothouse 9 air outlet slits are connected with filter 10 imports, filter 10 outlets are connected with precooler 5 air intlets
Precooler 5 air outlet slits are connected with the air intlet of evaporimeter 8, and evaporimeter 8 air outlet slits are connected with circulating fan 11 entrances;
Control system comprises control module 13, temperature sensor 15, humidity sensor 16 and guidance panel 14, control module 13 is connected with temperature sensor 15, humidity sensor 16 and guidance panel 14 by circuit, temperature sensor 15 and humidity sensor 16 are arranged in hothouse, and control module 13 is connected with air circulation system with heat pump circulating system by circuit.
In system, evaporimeter 8 and gas cooler 2 are fin-tube heat exchangers, and cold-producing medium flows in finned tube, and air flows outside finned tube.
In system, subcooler 3 is fin-tube heat exchanger or double pipe heat exchanger.When subcooler 3 is double pipe heat exchanger, cold-producing medium flows in inner tube, cooling agent flows at outer tube, it is promoted or flowed by the backheat form by external impetus that described cooling agent flows at outer tube, it is that the air-breathing pipeline be connected of gas-liquid separator 7 and compressor 1 is disconnected that described backheat form flows, the outlet of gas-liquid separator 7 is connected to the auxiliary cooling entrance 3a of subcooler 3, the auxiliary coolant outlet 3b of subcooler 3 is connected to the air entry of compressor 1.
In system, precooler 5 is the shell-tube type structure, described shell-tube type structure is comprised of package 5a and coil pipe 5b, coil pipe 5b is placed in package 5a, the head end of coil pipe 5b and end stretch out outside package, be respectively air intlet 5f and the air outlet slit 5g of precooler 5, air flows in coil pipe 5b, and described package 5a top has refrigerant inlet 5c and top refrigerant outlet 5d, the package bottom has bottom refrigerant outlet 5e, CO
2in package 5a, flow.
In system, to fill 6 be a kind of of capillary, heating power expansion valve or electric expansion valve or the wherein combination of two kinds for throttling arrangement 4 and second throttle.
In system, hothouse 9 is placed in the casing medium position, except the hothouse door, other positions of hothouse all are placed in sealing in casing, hothouse 9 is established door, have air admission hole on a sidewall of hothouse 9, air admission hole is comprised of the aperture be evenly distributed on sidewall, filter 10 is arranged on the top of hothouse 9, the air entry of filter is in hothouse, gas outlet is outside hothouse, hothouse 9 below bottom of shell are provided with enclosed baffle, cup and rear chamber two parts of bottom being divided into to sealing, cup is independent sealed, compressor 1, gas cooler 2, a throttling arrangement 4, precooler 5, secondary throttling gear 6, evaporimeter 8, gas-liquid separator 7 and circulating fan 11 are placed in hothouse 9 below bottom of shell, wherein gas cooler 2, evaporimeter 8 and circulating fan 11 are positioned at the rear chamber of bottom of shell, circulating fan 11 is placed between evaporimeter 8 and gas cooler 2, compressor 1, throttling arrangement 4, precooler 5, secondary throttling gear 6 and a gas-liquid separator 7 are positioned at the cup of bottom of shell, subcooler 3 is placed in the side that precooler 5 top hothouses 9 are not established air admission hole, between filter outlet and precooler 5, casing inner drying chamber has between air admission hole one side cavity and other side cavitys of hothouse and seals and separate, the rear chamber of installing gas cooler 2, evaporimeter 8 and circulating fan 11 has air admission hole one side cavity with casing inner drying chamber and communicates, and the cavity around casing inner drying chamber and hothouse form air circulation channel.
The course of work of the present invention is: heat pump circulating system starts, compressor 1 running, the CO of discharge High Temperature High Pressure
2gas (supercritical fluid), enter gas cooler 2, in gas cooler 2, emits heat, and temperature reduces, but does not undergo phase transition, and enters the further heat release cooling of subcooler 3, then, through throttling arrangement 4 step-downs, enters precooler 5, the CO after step-down
2in precooler 5 in the gas-liquid mixed state, the liquid evaporation after the part step-down wherein, heat absorption becomes saturated gas, and saturated gas is with to enter secondary after the exhaust of compressor one-level mixes air-breathing, (for compensating compressor, saturated gas enters intermediate cavity), the saturated liquid in precooler 5 is after the secondary throttling gear throttling, and the gas-liquid mixture that becomes low pressure enters in evaporimeter 8, the heat absorption evaporation, become low-pressure gas, by compressor 1, sucked compression, carry out next one circulation.Air circulation system carries out in clothes drying device, circulating fan is sent air into gas cooler 2, air and gas cooler 2 carry out heat exchange, absorb gas cooler 2 liberated heats, air themperature raises, water capacity is constant, the low humid air of high temperature enters hothouse 9 and carries out the wet exchange of heat with wet wash, absorb near the steam of clothing, emit heat, air after the cooling moisture absorption enters in precooler 5 emits heat, temperature further reduces, then by evaporimeter 8 coolings, analyse wet, temperature reduces, water capacity reduces, become the dry air that temperature is lower, and then send into gas cooler 2 heat absorptions by circulating fan, the high-temperature gas that becomes relatively dry enters hothouse 9 and carries out drying, loop, the moisture of separating out from evaporimeter 8, from water discharge outlet 8a, discharge.Wet clothes in hothouse 9 be dried air heat, moisture is precipitated and become dry, reaches the drying purpose.
Control system comprises control module 13, temperature sensor 15, humidity sensor 16 and guidance panel 14, control module 13 is connected with temperature sensor 15, humidity sensor 16 and guidance panel 14 by circuit, temperature sensor 15 and humidity sensor 16 are arranged in hothouse, and control module 13 is connected with air circulation system with heat pump circulating system by circuit.
Temperature sensor and humidity sensor are responded to respectively dry indoor air temperature, humidity, then parameter values for detection are sent to control module, and control module sends instruction again and controls compressor, fan operation work.Humidity sensor is also by the degree of drying of perception fabric, and fabric reaches mass dryness fraction and requires rear system automatic alarm, has avoided overdry textiles.Guidance panel can carry out the startup-shutdown operation, and baking temperature is selected.Baking temperature is divided into low temperature, middle temperature, three kinds of patterns of high temperature, according to the kind of required drying clothes, selected, the high temperature mode baking temperature is set as 60 degree, Chinese pattern baking temperature is set as 50 degree, the low temperature mode baking temperature is set as 40 degree, and different patterns is arranged to different Operation Conditions by control panel.
The present invention uses CO
2cold-producing medium, environmental sound, adopt across critical cycle, and broad temperature range can be provided, and adapts to different fabrics, and drying capacity can change.Can automatically adjust the operating condition of heat pump by variable frequency control according to the drying situation, make dryer use energy-conserving and environment-protective more, meet the requirement of Green design simultaneously.
Different fabric needs different baking temperatures, the suitable middle temperature is dried of silk for example, suitable high temperature when wool and acetate fiber kind fabric are dry, and in the clothing moisture the low dry suitable low temperature of period of end of a period, avoid fabric Yin Gaowen hot wrinkling.CO of the present invention
2can regulate for different fabrics the temperature of heated drying air across the circulating dryer of critical heat pump.Adopt CO
2across critical cycle, CO
2in the supercritical range heat release, can realize the air wind pushing temperature of 30-65 degree, and the air themperature of conventional heat pump is below 50 degree.Thereby set different baking temperatures according to different fabrics, adjustable range is wide.Adopt frequency-changeable compressor simultaneously, according to design temperature, carry out the flux matched running of energy; Circulating fan adopts frequency conversion fan, according to the operation of heat pump situation, carries out the air quantity adjustment, thus the efficient operation of keeping system.
Claims (10)
1. based on CO
2cloth drying system across critical heat pump circulating system, comprise CO
2across critical heat pump circulating system, air circulation system, hothouse, control system and casing, CO is installed in casing
2across critical heat pump circulating system, air circulation system and hothouse, CO
2comprise compressor (1), cooler, throttling arrangement, evaporimeter (8) and gas-liquid separator (7) across critical heat pump circulating system, it is characterized in that: described CO
2cooler across critical heat pump circulating system comprises gas cooler (2), subcooler (3) and precooler (5), and throttling arrangement comprises a throttling arrangement (4) and secondary throttling gear (6), CO
2across critical heat pump circulating system, by following, connected and composed: compressor (1) exhaust end is connected with gas cooler (2) refrigerant inlet, gas cooler (2) refrigerant outlet is connected with the subcooler refrigerant inlet, the subcooler refrigerant outlet is connected with a throttling arrangement (4) import, a throttling arrangement (4) outlet is connected with precooler (5) refrigerant inlet, precooler (5) bottom refrigerant outlet is connected with secondary throttling gear (6) import, secondary throttling gear (6) outlet is connected with evaporimeter (8) refrigerant inlet, evaporimeter (8) refrigerant outlet is connected with gas-liquid separator (7) import, gas-liquid separator (7) outlet is connected with the compressor air suction end, precooler (5) top refrigerant outlet is connected with compressor secondary suction end or intermediate cavity,
Described air circulation system comprises circulating fan (11), filter (10) and air channel, air circulation system is connected and composed by following: circulating fan (11) air outlet is connected with gas cooler (2) air intlet, gas cooler (2) air outlet slit is connected with hothouse (9) air intlet, hothouse (9) air outlet slit is connected with filter (10) import, filter (10) outlet is connected with precooler (5) air intlet, precooler (5) air outlet slit is connected with the air intlet of evaporimeter (8), evaporimeter (8) air outlet slit is connected with circulating fan (11) entrance,
Described control system comprises control module, temperature sensor, humidity sensor and guidance panel, control module is connected with temperature sensor, humidity sensor and guidance panel by circuit, temperature sensor and humidity sensor are arranged in hothouse, and control module is connected with air circulation system with heat pump circulating system by circuit.
2. according to claim 1 based on CO
2cloth drying system across critical heat pump circulating system is characterized in that: described evaporimeter (8) and gas cooler (2) are fin-tube heat exchangers, and cold-producing medium flows in finned tube, and air flows outside finned tube.
3. according to claim 1 based on CO
2cloth drying system across critical heat pump circulating system is characterized in that: described subcooler (3) is fin-tube heat exchanger or double pipe heat exchanger.
4. according to claim 3 based on CO
2cloth drying system across critical heat pump circulating system, it is characterized in that: described subcooler (3) is while being double pipe heat exchanger, cold-producing medium flows in inner tube, cooling agent flows at outer tube, it is promoted or flowed by the backheat form by external impetus that described cooling agent flows at outer tube, it is that the air-breathing pipeline be connected of gas-liquid separator (7) and compressor (1) is disconnected that described backheat form flows, the outlet of gas-liquid separator (7) is connected to the auxiliary cooling entrance (3a) of subcooler (3), the auxiliary coolant outlet (3b) of subcooler (3) is connected to the air entry of compressor (1).
5. according to claim 1 based on CO
2cloth drying system across critical heat pump circulating system, it is characterized in that: described precooler (5) is the shell-tube type structure, by package (5a) and coil pipe (5b), formed, coil pipe (5b) is placed in package (5a), head end and the end of coil pipe (5b) stretch out outside package, be respectively air intlet (5f) and the air outlet slit (5g) of precooler (5), air flows in coil pipe (5b), described package (5a) top has refrigerant inlet (5c) and top refrigerant outlet (5d), the package bottom has bottom refrigerant outlet (5e), CO
2in package (5a), flow.
6. according to claim 1 based on CO
2cloth drying system across critical heat pump circulating system is characterized in that: a described throttling arrangement (4) and second throttle dress (6) are a kind of of capillary, heating power expansion valve or electric expansion valve or the wherein combination of two kinds.
7. according to claim 1 based on CO
2cloth drying system across critical heat pump circulating system, it is characterized in that: described hothouse is placed in the casing medium position, hothouse is established door, except the hothouse door, other positions of hothouse all are placed in sealing in casing, have air admission hole on a sidewall of hothouse (9), filter (10) is installed at the top of hothouse (9), the air entry of filter is in hothouse, gas outlet is outside hothouse, hothouse (9) below bottom of shell is provided with enclosed baffle, be divided into cup and rear chamber by enclosed baffle, cup is independent sealed, compressor (1), a throttling arrangement (4), precooler (5), secondary throttling gear (6) and gas-liquid separator (7) are arranged in cup, gas cooler (2), evaporimeter (8) and circulating fan (11) are arranged on rear indoor, and circulating fan (11) is placed between evaporimeter (8) and gas cooler (2), subcooler (3) is placed in the side that precooler (5) top hothouse (9) is not established air admission hole, be positioned between filter outlet and precooler (5), casing inner drying chamber has between air admission hole one side cavity and other side cavitys of hothouse and seals and separate, after bottom of shell, chamber has air admission hole one side cavity with casing inner drying chamber and communicates, and the cavity around casing inner drying chamber and hothouse form air circulation channel.
8. according to claim 1 based on CO
2cloth drying system across critical heat pump circulating system, it is characterized in that: described control module is set three kinds of clothes-drying modes: low temperature, three kinds of patterns of middle gentle high temperature, the high temperature mode baking temperature is 60 ℃, middle temperature pattern baking temperature is 50 degree, the low temperature mode baking temperature is set as 40 degree, adjusts the heat pump Operation Conditions by control module and realizes.
9. according to claim 1 based on CO
2cloth drying system across critical heat pump circulating system is characterized in that: described compressor (1) is frequency-changeable compressor; Circulating fan (11) is frequency conversion fan.
10. according to claim 1 based on CO
2across the cloth drying system of critical heat pump circulating system, its feature exists: described hothouse air admission hole is comprised of the aperture be evenly distributed on the hothouse sidewall.
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| CN2013100229938A CN103103736A (en) | 2013-01-22 | 2013-01-22 | Clothes drying system based on carbon dioxide transcritical heat pump cycle system |
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| CN2013100229938A CN103103736A (en) | 2013-01-22 | 2013-01-22 | Clothes drying system based on carbon dioxide transcritical heat pump cycle system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761050A (en) * | 2018-07-27 | 2020-02-07 | 青岛海尔滚筒洗衣机有限公司 | Clothes dryer heat pump system and clothes dryer |
| CN112030491A (en) * | 2019-06-03 | 2020-12-04 | 青岛海尔洗衣机有限公司 | Clothes drying equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110761050A (en) * | 2018-07-27 | 2020-02-07 | 青岛海尔滚筒洗衣机有限公司 | Clothes dryer heat pump system and clothes dryer |
| CN112030491A (en) * | 2019-06-03 | 2020-12-04 | 青岛海尔洗衣机有限公司 | Clothes drying equipment |
| CN112030491B (en) * | 2019-06-03 | 2023-01-31 | 青岛海尔洗衣机有限公司 | Clothes drying equipment |
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Application publication date: 20130515 |