CN106594908B - Frostless air source heat pump system with runner dehumidification - Google Patents
Frostless air source heat pump system with runner dehumidification Download PDFInfo
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- CN106594908B CN106594908B CN201710056424.3A CN201710056424A CN106594908B CN 106594908 B CN106594908 B CN 106594908B CN 201710056424 A CN201710056424 A CN 201710056424A CN 106594908 B CN106594908 B CN 106594908B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
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- 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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Air Conditioning (AREA)
- Air Conditioning Control Device (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a novel frostless air source heat pump system with a rotary wheel for dehumidification, which comprises a refrigerant loop, an indoor side air loop, an outdoor side air loop and a dehumidification rotary wheel for connecting the indoor side and the outdoor side, wherein the refrigerant loop is connected with the indoor side and the outdoor side of the refrigeration loop; the water vapor of the outdoor air is sent into the room through the dehumidification rotating wheel, so that on one hand, the humidity of the air on the surface of the outdoor heat exchanger is reduced, and the frostless air source heat pump is realized; on the other hand, the indoor air is humidified, so that the moisture content of a heating room is improved while the frosting is inhibited, and the effect of killing two birds with one stone is achieved. In summer, the dehumidifying rotary wheel can bring out indoor humidity to realize indoor dehumidification, and the high-temperature air exhausted by the outdoor heat exchanger is used for regenerating the moisture absorbent. The novel circulating defrosting system mainly reduces the loss of surface convection heat dissipation in the defrosting process, improves the defrosting efficiency, shortens the defrosting time and reduces the defrosting energy consumption. Meanwhile, the dehumidifying rotating wheel can send the water vapor generated in the defrosting process into the room, so that the indoor air quality is improved.
Description
Technical Field
The invention relates to the technical field of frostless air source heat pumps, in particular to a frostless air source heat pump device with a rotating wheel for dehumidification.
Background
The air source heat pump has the advantages of cooling and heating, small occupied space, energy conservation, environmental protection, convenience in installation and the like, and is more and more favored in recent years. However, the outdoor heat exchanger of the air source heat pump has the problem of frosting during operation in winter, so that the operation effect is not ideal. And along with the increase of the thickness of the frost layer on the wall of the outdoor heat exchanger, the problems of the reduction of the evaporation temperature of the outdoor heat exchanger, the reduction of the heating capacity of a unit, the performance attenuation of a fan, the reduction of the heat supply performance coefficient and the like can be caused, and the compressor can be stopped in serious cases, so that the unit can not work normally. Therefore, the problem of frosting is the primary factor affecting the normal heating of the heat pump unit.
The research of domestic scholars shows that the surface of an outdoor heat exchanger of an air source heat pump is most prone to frosting when the air source heat pump operates under the meteorological condition that the temperature is between-5 ℃ and the relative humidity is more than 70%; the research of Japanese scholars also shows that the frosting of the outdoor heat exchanger can occur when the outdoor dry bulb temperature is between-12.8 ℃ and 5.8 ℃ and the relative humidity is more than 65 percent, and the outdoor heat exchanger is also called a frosting area. At air relative humidities below 65%, frosting is difficult to occur. Therefore, under the condition of a certain temperature, the influence of the humidity on frosting is the largest, the frosting can be effectively avoided by reducing the humidity, and the dewing and frosting phenomena cannot occur if the dew point temperature of the outdoor air after dehumidification is lower than the evaporation temperature of the refrigerant. Based on the technical scheme, the invention provides a novel frostless air source heat pump system with rotary wheel dehumidification.
However, in the case where the dew point temperature of the outdoor air is still higher than the evaporation temperature of the refrigerant after dehumidification, the air source heat pump may still have a problem of frosting. In order to ensure the normal operation of the air source heat pump unit, defrosting is needed after frosting, and reverse circulation defrosting is one of the most widely applied defrosting methods at present. When the reverse cycle defrosting is applied, the outdoor heat exchanger becomes a condenser, and the indoor heat exchanger becomes an evaporator. The unit takes heat from the indoor environment to melt the frost layer, so that the indoor environment is deteriorated; on the other hand, the defrosting energy consumption is large, the defrosting energy consumption accounts for 10.2% of the total energy consumption in the whole heating season, and the defrosting efficiency is generally low and is generally lower than 50%. The invention provides a novel rotary wheel dehumidification circulating defrosting system, which mainly comprises heat dissipated to the environment and throttling loss, and aims to improve defrosting efficiency, reduce defrosting time and reduce defrosting energy consumption.
Patent CN102384539A provides a compound air conditioning system of air source heat pump and runner dehumidification combination, and this compound air conditioning system combines together with indoor radiation heating and cooling, and the dehumidification runner is used for the indoor new trend dehumidification in summer to do not consider the working condition that frosts in winter, need modify the refrigerant loop, still need add the heat exchange runner, and the system form is comparatively complicated. Patent CN103017332A proposes a frostless air source heat pump water heater of heat accumulation dehumidification coupled type, and this system can realize frostless air source heat pump, nevertheless need add solid moisture absorption and phase change heat accumulation module to need revise the refrigerant loop, the system form is comparatively complicated, and has two kinds of operational modes, and is higher to the control accuracy requirement.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a novel frostless air source heat pump system with a rotating wheel for dehumidification, which overcomes the problems that in the prior art, the idea of defrosting after frosting is performed, the original refrigerant pipeline needs to be modified, and the system operation and control are complicated.
The technical scheme adopted by the invention is as follows: a novel frostless air source heat pump system with rotary wheel dehumidification comprises a refrigerant loop, an indoor side air loop, an outdoor side air loop and a dehumidification rotary wheel for connecting the indoor side and the outdoor side;
the refrigerant loop comprises a loop consisting of a compressor, a four-way reversing valve, an evaporator, an electronic expansion valve and a condenser;
the outdoor air loop comprises an outdoor fan, a dehumidification rotating wheel, an outdoor induced draft tube, an outdoor blast tube and an outdoor controllable air port part; when the heat supply working condition is adopted, outdoor medium-temperature high-humidity air enters a dehumidification rotary wheel dehumidification area through an outdoor induced air pipe, is changed into high-temperature low-humidity air after being dehumidified, is sent to an evaporator through an outdoor side fan through an outdoor air supply pipe, is changed into low-temperature high-humidity air after being cooled, and is finally sent to outdoor atmosphere through a controllable air inlet of an outdoor unit; when the refrigeration working condition is met, the outdoor air loop reversely runs, namely, the air heated by the outdoor heat exchanger is used for regenerating the dehumidifying rotating wheel;
the indoor side air loop comprises an indoor side fan, a dehumidifying rotating wheel, an indoor air return inlet, an indoor air supply outlet, an indoor air return pipe and an indoor air supply pipe part; when the heat supply working condition is adopted, indoor low-temperature and low-humidity air enters the condenser through the indoor air return opening, is heated and then is changed into high-temperature and low-humidity air, enters the dehumidification runner regeneration area through the indoor air return pipe through the indoor side fan, is changed into medium-temperature and medium-humidity air after being humidified, is sent into the indoor air supply opening through the indoor air supply pipe, and finally enters the indoor; when the refrigerating working condition is adopted, indoor air is dehumidified and dried at the position of the dehumidification rotating wheel, and the high-temperature air exhausted by the outdoor heat exchanger is used for regenerating the moisture absorbent;
the dehumidification rotating wheel comprises a dehumidification rotating wheel regeneration area and a dehumidification rotating wheel dehumidification area; in the working condition of heat supply, in order to avoid frosting of the outdoor heat exchanger, the relative humidity of air entering the outdoor heat exchanger needs to be reduced, the outdoor air is dehumidified by the dehumidification rotating wheel dehumidification area, meanwhile, the indoor air is humidified by the dehumidification rotating wheel regeneration area, and the regeneration of the moisture absorbent is completed; when the refrigeration working condition is adopted, in order to reduce the humidity of indoor air, the dehumidification rotating wheel dehumidification area is used for dehumidifying the indoor air, the independent temperature and humidity control can be realized, and meanwhile, the moisture absorbent in the dehumidification rotating wheel regeneration area is regenerated by using high-temperature air exhausted by the outdoor heat exchanger.
An outdoor circulating pipe is arranged between the outdoor induced draft pipe and the evaporator, an electric valve I is arranged on the outdoor circulating pipe, and an electric valve II is arranged on the outdoor induced draft pipe.
The controllable air opening of the outdoor unit is linked with the electric valve I and the electric valve II, so that the switching of frost-free operation and circulating defrosting is realized.
The return air of the indoor side air loop is replaced by fresh air.
The invention has the beneficial effects that: according to the novel frostless air source heat pump system, water vapor of outdoor air is sent into a room through the dehumidifying rotating wheel, so that on one hand, the humidity of the air on the surface of the outdoor heat exchanger is reduced, and a frostless air source heat pump is realized; on the other hand, the indoor air is humidified, so that the moisture content of a heating room is improved while the frosting is inhibited, and the effect of killing two birds with one stone is achieved. In summer, the dehumidifying rotary wheel can bring out indoor humidity to realize indoor dehumidification, and the high-temperature air exhausted by the outdoor heat exchanger is used for regenerating the moisture absorbent.
The novel circulating defrosting system mainly reduces the loss of surface convection heat dissipation in the defrosting process, improves the defrosting efficiency, shortens the defrosting time and reduces the defrosting energy consumption. Meanwhile, the dehumidifying rotating wheel can send the water vapor generated in the defrosting process into the room, so that the indoor air quality is improved.
Drawings
FIG. 1 is a diagram illustrating the winter operation of a novel frostless air source heat pump with rotary wheel dehumidification;
FIG. 2 is a schematic diagram of the operation of a novel frostless air source heat pump with rotary wheel dehumidification in summer;
FIG. 3 is a schematic diagram of a novel cyclical defrost system with rotary wheel dehumidification;
FIG. 4 is a detailed view of a winter air treatment process of the frostless air source heat pump;
FIG. 5 is a psychrometric chart of a frostless air source heat pump winter air treatment process;
wherein: 1. a compressor; 1-1, a four-way reversing valve; 2. an evaporator (outdoor side heat exchanger); 3. an electronic expansion valve; 4. a condenser (indoor side heat exchanger); 5. an indoor side fan; 6. an outdoor side fan; 7. a dehumidification rotating wheel; 7-1, a dehumidification runner regeneration zone; 7-2, a dehumidification rotary wheel dehumidification area; 8. an indoor return air inlet; 9. an indoor air supply outlet; 10. an indoor return air duct; 11. an indoor blast pipe; 12. an outdoor induced draft pipe; 13. an outdoor blast pipe; 14. a controllable air port of the outdoor unit; 15. an outdoor circulation pipe; 16. an electric valve I; 17. an electric valve II; 18. an outdoor induced draft opening.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples.
As shown in fig. 1, the frostless air source heat pump system of the present invention includes a refrigerant loop, an indoor side air loop, an outdoor side air loop, and a desiccant rotor connecting the indoor side and the outdoor side.
The refrigerant loop comprises a compressor 1, a four-way reversing valve 1-1, an evaporator 2, an electronic expansion valve 3, a condenser 4 and the like. The flow direction of the heating working condition is as follows: 1 → 1-1 → 4 → 3 → 2 → 20 → 1; the flow direction of the refrigeration working condition is as follows: 1 → 1-1 → 2 → 3 → 4 → 20 → 1.
The outdoor air loop comprises an outdoor fan 6, a dehumidifying rotary wheel 7, an outdoor induced draft pipe 12, an outdoor blast pipe 13, an outdoor controllable air inlet 14 and the like. When in a heat supply working condition, outdoor medium-temperature high-humidity air (OA) enters the dehumidification rotary wheel dehumidification area 7-2 through the outdoor air guide pipe 12, is changed into high-temperature low-humidity air (DA) after being dehumidified, is sent into the evaporator 2 through the outdoor side fan 6 through the outdoor air supply pipe 13, is changed into low-temperature high-humidity air (EA) after being cooled, and is finally sent to outdoor atmosphere through the outdoor controllable air inlet 14; and when the refrigeration working condition is met, the outdoor air loop reversely runs, namely, the air heated by the outdoor heat exchanger is used for regenerating the dehumidifying rotating wheel 7.
The indoor air loop comprises an indoor fan 5, a dehumidification rotating wheel 7, an indoor air return opening 8, an indoor air supply opening 9, an indoor air return pipe 10, an indoor air supply pipe 11 and the like. Under the working condition of heat supply, indoor low-temperature and low-humidity air (IA) enters the condenser 4 through the indoor air return opening 8, is heated and then is changed into high-temperature and low-Humidity Air (HA), passes through the indoor side fan 5, enters the dehumidification runner regeneration area 7-1 through the indoor air return pipe 10, is changed into medium-temperature and medium-humidity air (CA) after being humidified, is sent into the indoor air supply opening 9 through the indoor air supply pipe 11 and finally enters the room, and the enthalpy-humidity diagram of the air in the treatment process is shown in fig. 5; under the refrigeration working condition, the indoor air is dehumidified and dried at the position of the dehumidification rotating wheel 7, and the high-temperature air exhausted by the outdoor heat exchanger is used for regenerating the moisture absorption agent.
The dehumidification rotary wheel 7 comprises a dehumidification rotary wheel regeneration area 7-1 and a dehumidification rotary wheel dehumidification area 7-2. In the working condition of heat supply, in order to avoid frosting of the outdoor heat exchanger, the relative humidity of air entering the outdoor heat exchanger needs to be reduced, the outdoor air is dehumidified through the dehumidification rotating wheel dehumidification area 7-2, and meanwhile, the indoor air is humidified by the dehumidification rotating wheel regeneration area 7-1 to complete the regeneration of the moisture absorbent; when the air conditioner is in a refrigerating working condition, in order to reduce the humidity of indoor air, the dehumidification rotating wheel dehumidification area 7-2 is used for dehumidifying the indoor air, independent temperature and humidity control can be achieved, and meanwhile, the high-temperature air exhausted by the outdoor heat exchanger is used for regenerating the moisture absorbent in the dehumidification rotating wheel regeneration area 7-1.
As shown in fig. 3, the novel circulation-type defrosting system with rotary wheel dehumidification of the present invention is a supplement to a novel frostless air source heat pump system, and mainly considers that the air source heat pump may still have a frosting problem under severe weather conditions, that is, under the condition that the dew-point temperature of the outdoor air after dehumidification is still higher than the evaporation temperature of the refrigerant, and at this time, the system needs defrosting. In order to improve defrosting efficiency, the invention is additionally provided with an outdoor circulating pipe 15, an electric valve I16 is opened, an electric valve II17 is closed, and an outdoor controllable air opening 14 is closed, so that outdoor air is subjected to circulating defrosting, water vapor generated in the defrosting process is transferred to the indoor from a dehumidifying runner 7, and the indoor air is humidified.
In the above scheme, the controllable air inlet 14 of the outdoor unit is linked with the electric valve I16 and the electric valve II17, so as to realize switching between frost-free operation and circulating defrosting.
In the above scheme, the indoor side air loop of the frostless air source heat pump system can be, but is not limited to, return air, and the fresh air meeting the requirements can also be used as the indoor side air loop of the dehumidifying rotating wheel.
In the scheme, the dehumidification rotating wheel is adopted to prevent frosting, but the rotating wheel can also carry out heat recovery, if the heat recovery amount of the exhaust air is enough, the frosting can be avoided by directly utilizing the mode of heating the outdoor air, and the rotating wheel at the moment is the heat recovery rotating wheel.
In the scheme, the heat capacity of the adopted dehumidification rotating wheel is required to be as small as possible, so that the phenomenon that the outdoor cold energy is excessively brought into the room is avoided;
in the scheme, when the circulating defrosting is carried out, indoor air is used for regeneration, but because the four-way reversing valve is reversed at the moment, the indoor side enters a refrigeration mode, and an indoor fan is required to be closed or run at a low wind speed, the treated outdoor air (or fresh air) can be used for regeneration at the moment;
according to the scheme, when the outdoor coil pipe is frostless (in winter) and the indoor does not need dehumidification (in summer), the dehumidification rotating wheel system can be closed, and the normal air source heat pump system can be recovered.
And (3) system operation conversion:
a frost-free system: the condenser heats the indoor air, and then the indoor air is conveyed to the dehumidifying rotating wheel through the pipeline, and the solid moisture absorbent on the rotating wheel is regenerated while the indoor air is humidified, so that the air entering the outdoor evaporator is continuously dehumidified, and frosting is avoided; if the outdoor environment is severe and frosting occurs, a circulating defrosting system is adopted;
the circulating defrosting system is characterized in that an outdoor heat exchanger is isolated from outdoor air during defrosting, circulating air is adopted for defrosting, high-humidity air generated in the defrosting process is brought into the room by virtue of a dehumidifying rotating wheel, the dehumidifying rotating wheel is regenerated by utilizing the indoor air, and meanwhile, the room is humidified.
Under the condition of heating, the dehumidification rotating wheel can simultaneously realize frostless of the outdoor heat exchanger and humidification of indoor air without additional devices and heat. Because the air conditioner is designed to be lower than 28 ℃ for cold wind blowing prevention protection and higher than 56 ℃ for overheating protection or frequency reduction during heating of the air conditioner, the optimal indoor condensing temperature is also 50 ℃ and the regeneration temperature of silica gel is between (40 ℃ to 50 ℃), so that the system can continuously and normally run. Under the refrigeration working condition, the dehumidification rotating wheel is used for dehumidifying indoor air, and the high-temperature air discharged by the outdoor heat exchanger regenerates the moisture absorbent.
While the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are intended to be illustrative rather than restrictive, and many modifications may be made by those skilled in the art without departing from the spirit of the present invention within the scope of the appended claims.
Claims (3)
1. A frostless air source heat pump system with rotary wheel dehumidification is characterized by comprising a refrigerant loop, an indoor side air loop, an outdoor side air loop and a dehumidification rotary wheel for connecting the indoor side and the outdoor side;
the refrigerant loop comprises a loop consisting of a compressor, a four-way reversing valve, an evaporator, an electronic expansion valve and a condenser;
the outdoor air loop comprises an outdoor fan, a dehumidification rotating wheel, an outdoor induced draft tube, an outdoor blast tube and an outdoor controllable air port part; when the heat supply working condition is adopted, outdoor medium-temperature high-humidity air enters a dehumidification rotary wheel dehumidification area through an outdoor induced air pipe, is changed into high-temperature low-humidity air after being dehumidified, is sent to an evaporator through an outdoor side fan through an outdoor air supply pipe, is changed into low-temperature high-humidity air after being cooled, and is finally sent to outdoor atmosphere through a controllable air inlet of an outdoor unit; when the refrigeration working condition is met, the outdoor air loop reversely runs, namely, the air heated by the outdoor heat exchanger is used for regenerating the dehumidifying rotating wheel; an outdoor circulating pipe is arranged between the outdoor induced draft pipe and the evaporator, an electric valve I is arranged on the outdoor circulating pipe, and an electric valve II is arranged on the outdoor induced draft pipe;
the indoor side air loop comprises an indoor side fan, a dehumidifying rotating wheel, an indoor air return inlet, an indoor air supply outlet, an indoor air return pipe and an indoor air supply pipe part; when the heat supply working condition is adopted, indoor low-temperature and low-humidity air enters the condenser through the indoor air return opening, is heated and then is changed into high-temperature and low-humidity air, enters the dehumidification runner regeneration area through the indoor air return pipe through the indoor side fan, is changed into medium-temperature and medium-humidity air after being humidified, is sent into the indoor air supply opening through the indoor air supply pipe, and finally enters the indoor; when the refrigerating working condition is adopted, indoor air is dehumidified and dried at the position of the dehumidification rotating wheel, and the high-temperature air exhausted by the outdoor heat exchanger is used for regenerating the moisture absorbent;
the dehumidification rotating wheel comprises a dehumidification rotating wheel regeneration area and a dehumidification rotating wheel dehumidification area; in the working condition of heat supply, in order to avoid frosting of the outdoor heat exchanger, the relative humidity of air entering the outdoor heat exchanger needs to be reduced, the outdoor air is dehumidified by the dehumidification rotating wheel dehumidification area, meanwhile, the indoor air is humidified by the dehumidification rotating wheel regeneration area, and the regeneration of the moisture absorbent is completed; when the refrigeration working condition is adopted, in order to reduce the humidity of indoor air, the dehumidification rotating wheel dehumidification area is used for dehumidifying the indoor air, the independent temperature and humidity control can be realized, and meanwhile, the moisture absorbent in the dehumidification rotating wheel regeneration area is regenerated by using high-temperature air exhausted by the outdoor heat exchanger.
2. The frostless air source heat pump system with rotary wheel dehumidification of claim 1, wherein the controllable air opening of the outdoor unit is linked with an electric valve I and an electric valve II to realize the switching of frostless operation and cyclic defrosting.
3. The frost-free air source heat pump system with rotary wheel dehumidification of claim 1, wherein the indoor side air loop return air is replaced with fresh air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710056424.3A CN106594908B (en) | 2017-01-25 | 2017-01-25 | Frostless air source heat pump system with runner dehumidification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710056424.3A CN106594908B (en) | 2017-01-25 | 2017-01-25 | Frostless air source heat pump system with runner dehumidification |
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| CN106594908A CN106594908A (en) | 2017-04-26 |
| CN106594908B true CN106594908B (en) | 2022-04-19 |
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| CN113390169B (en) * | 2021-05-19 | 2023-01-31 | 青岛海尔空调电子有限公司 | Control method and device for humidity conditioner and humidity conditioner |
| CN113465043A (en) * | 2021-07-26 | 2021-10-01 | 珠海格力电器股份有限公司 | Air conditioner capable of continuously heating and humidifying and control method thereof |
| CN113865208B (en) * | 2021-09-16 | 2023-03-28 | 同济大学 | Heat pump rotating wheel coupling device for frostless refrigeration house and operation method |
| CN115234981B (en) * | 2022-07-05 | 2023-09-26 | 青岛海信日立空调系统有限公司 | Air conditioner |
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| CN105115069B (en) * | 2015-08-06 | 2018-11-13 | 吕智 | Desiccant wheel and pump coupled heat formula indirect evaporating-cooling heat recovery fresh air air-conditioning |
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