Rotary dehumidification device, system, and heat source and cold source regeneration method

Abstract

The present invention relates to the technical field of refrigeration engineering, and discloses a rotary dehumidification device, system, heat source and cold source regeneration and air supply method, comprising a primary evaporator, a dehumidification rotary wheel, an auxiliary air heater, a condenser, a sensible heat exchanger, a secondary evaporator and a primary evaporator. The heat pump technology is used to recover the waste heat of the processed air and the adsorption heat generated in the dehumidification process for the regeneration drive of the rotary dehumidification. A heat recovery device and two energy-saving measures for recovering low-humidity indoor exhaust air are added to reduce the energy consumption of the system. Through the reasonable design of the air supply mode of the system, the system can be used in both winter and summer and the indoor air quality is guaranteed during winter use.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration engineering, and in particular to a rotary dehumidification device, system, heat source and cold source regeneration and air supply method. Background Art

[0002] Heat pump is an energy-saving and effective heat recovery technology. It can raise low-grade waste heat to high-grade heat energy at the required temperature by consuming a small amount of electricity. Rotary dehumidification is a new and efficient dehumidification technology. It can adjust the air humidity by driving low-grade heat energy (about 100°C). Since the dehumidification wheel generates adsorption heat during the dehumidification process, the temperature of the treated air after dehumidification will increase. Therefore, the heated treated air needs to be further cooled to achieve low-temperature and low-humidity air output. It can be seen that rotary dehumidification requires both heat and cold to achieve the adjustment of air humidity and temperature. Therefore, the combination of rotary dehumidification and heat pump heat recovery technology can well achieve the separate adjustment of air humidity and temperature, that is, the independent control of temperature and humidity, so that the combined system has energy-saving and comfortable air conditioning effects.

[0003] However, the existing heat pump driven rotary dehumidification air conditioning system has problems such as high system energy consumption and low efficiency due to unreasonable design. The high energy consumption is mainly reflected in the high system regeneration temperature and large heat loss; the low efficiency is reflected in the fact that the conventional system can only be used for cooling in summer, while the system is idle in winter. Even if some systems are used in both winter and summer, they do not effectively recycle indoor exhaust air, so the system consumes a lot of energy.

[0004] The prior art discloses a composite air conditioning system combining an air source heat pump and a rotary dehumidification, the system includes a heat pump system and a rotary dehumidification system, the dehumidification unit is composed of a dehumidification rotary wheel, a heat exchange rotary wheel, an evaporator, a heater, a fresh air fan and an exhaust fan; the heat pump unit is composed of a variable frequency compressor, an outdoor heat exchanger, an indoor heat exchanger, a gas-liquid separator, a four-way reversing valve and other equipment, the composite air conditioning system is combined with indoor radiation heating and cooling, and two evaporation temperature operating conditions can be achieved by controlling the electronic expansion valve, the solenoid valve, the check valve and the constant pressure valve; the dehumidification rotary wheel, the heat exchange rotary wheel and the outdoor heat exchanger and the indoor heat exchanger of the heat pump unit are combined, the high-temperature waste heat of the compressor exhaust is used as the regenerative energy of the dehumidification rotary wheel, and part of the cooling capacity of the heat pump is used to cool the fresh air, thereby improving the performance of the dehumidification unit. The prior art has the problem of failing to effectively recycle the indoor exhaust air and having a large system energy consumption. Summary of the invention

[0005] The object of the present invention is to provide a rotary dehumidification device, system, heat source and cold source regeneration and air supply method to achieve the effects of low energy consumption, winter and summer dual use and excellent air quality of the rotary dehumidification device.

[0006] In order to achieve the above-mentioned objectives, the present invention provides a rotary dehumidification device, comprising a primary evaporator, a dehumidification wheel, an auxiliary air heater, a condenser, a sensible heat exchanger, and a secondary evaporator, the input end of the primary evaporator is connected to the second outdoor fresh air inlet and the condenser, and the output end is connected to the input end of the dehumidification wheel, the output end of the dehumidification wheel is connected to the input end of the secondary evaporator, the output end of the secondary evaporator is connected to the sensible heat exchanger and the input end of the air-conditioned room, the output end of the air-conditioned room is connected to the input end of the primary evaporator and the sensible heat exchanger, the output end of the sensible heat exchanger is connected to the condenser, the output end of the condenser is connected to the auxiliary air heater and the input end of the primary evaporator, the output end of the auxiliary air heater is connected to the input end of the dehumidification wheel, the first outdoor fresh air inlet is connected to the air-conditioned room and the input end of the sensible heat exchanger.

[0007] Preferably, it also includes a first air valve, a second air valve, a third air valve, a fourth air valve, a fifth air valve, an eighth air valve and a ninth air valve, the second outdoor fresh air inlet is connected to the input end of the first-level evaporator through the first air valve, the output end of the air-conditioned room is connected to the first-level evaporator through the second air valve, the output end of the secondary evaporator is connected to the input end of the air-conditioned room through the third air valve, the first outdoor fresh air inlet is connected to the air-conditioned room through the eighth air valve and the fourth air valve in sequence, the first outdoor fresh air inlet is connected to the input end of the sensible heat exchanger through the eighth air valve, the secondary evaporator is connected to the input end of the sensible heat exchanger, and the dehumidification wheel is connected to the input end of the sensible heat exchanger through the fifth air valve.

[0008] Preferably, it also includes a sixth air valve, a seventh air valve, a supply fan, and an exhaust fan. The sensible heat exchanger is connected to the air inlet of the exhaust fan through the sixth air valve, the secondary evaporator is connected to the air inlet of the exhaust fan through the seventh air valve, the air outlet of the exhaust fan is connected to the outdoors, the dehumidification wheel is connected to the air inlet of the supply fan through the ninth air valve, the secondary evaporator is connected to the air inlet of the supply fan through the third air valve, and the air outlet of the supply fan is connected to the air-conditioned room.

[0009] Preferably, it also includes a compressor, the output end of the compressor is connected to the condenser, the condenser is connected to one end of the three-way regulating valve, the other two ends of the three-way regulating valve are connected to the secondary evaporator and the primary evaporator respectively, and the secondary evaporator and the primary evaporator are simultaneously connected to the input end of the compressor.

[0010] Preferably, a capillary tube is further included, and the condenser is connected to one end of the three-way regulating valve through the capillary tube.

[0011] Preferably, the dehumidification wheel includes a dehumidification wheel regeneration zone and a dehumidification wheel dehumidification zone, the input end of the dehumidification wheel regeneration zone is connected to the auxiliary air heater, and the output end is connected to the sensible heat exchanger and the air-conditioned room, the input end of the dehumidification wheel dehumidification zone is connected to the primary evaporator and one end of the three-way regulating valve, and the output end is connected to the secondary evaporator.

[0012] Preferably, both the dehumidification wheel regeneration zone and the dehumidification wheel dehumidification zone are provided with adsorbent.

[0013] A rotary dehumidification system based on the rotary dehumidification device described above, comprising a rotary dehumidification subsystem, a heat pump subsystem and a wind valve subsystem;

[0014] The rotary dehumidification subsystem includes a primary evaporator, a dehumidification rotary wheel, an auxiliary air heater, a condenser, a sensible heat exchanger, a secondary evaporator, a supply fan and an exhaust fan;

[0015] The heat pump subsystem includes a primary evaporator, a secondary evaporator, a condenser, a capillary tube, a three-way regulating valve and a compressor. The heat pump subsystem provides the rotary dehumidification subsystem with a regenerative driving heat source required for dehumidification and a cold source required for cooling;

[0016] The air valve subsystem includes a first air valve, a second air valve, a third air valve, a fourth air valve, a fifth air valve, a sixth air valve, a seventh air valve, an eighth air valve and a ninth air valve. The air valve subsystem cooperates with the rotary dehumidification subsystem to automatically adjust the opening and closing of the air valves according to different seasons.

[0017] A heat source and cold source regeneration method based on the above-mentioned rotary dehumidification system includes: the compressed high-temperature and high-pressure gaseous refrigerant is driven by a compressor to be sent into a condenser, the regeneration air with a lower temperature is heated, and after heat release and condensation, it becomes a high-temperature and high-pressure liquid refrigerant, and is throttled and reduced in pressure by a capillary tube to become a low-pressure and low-temperature liquid refrigerant, and then is diverted by a three-way regulating valve to enter a primary evaporator and a secondary evaporator respectively, to cool the high-temperature treated air, and absorb heat and evaporate to become a low-temperature and low-pressure gaseous refrigerant, which is sent to the compressor and the above process is circulated.

[0018] A rotary dehumidification air supply method includes the following two situations:

[0019] In summer working conditions, the first air valve, the second air valve, the third air valve, the fourth air valve, the fifth air valve and the sixth air valve are opened, and the other air valves are closed. On the treated air side, the outdoor fresh air is mixed with the indoor return air output from the second indoor air outlet through the second outdoor fresh air outlet and sent to the primary evaporator for pre-cooling and cooling, and then sent to the dehumidification zone of the dehumidification wheel. After adsorption and dehumidification by the adsorbent, due to the generation of adsorption heat, it becomes treated air with high temperature and low humidity, and then cooled to the supply air of the required indoor temperature through the secondary evaporator, and finally driven by the supply fan to be sent to the air-conditioned room; on the regeneration air side, the indoor exhaust air with low moisture content is sent to the sensible heat exchanger as regeneration air through the first indoor air outlet, and heat is exchanged with the regeneration exhaust air from the higher temperature. After the temperature rises, it is sent to the condenser for heating, and the heat of the air on the treatment side is recovered and sent to the auxiliary air heater. After being heated to the regeneration temperature required for dehumidification, it is sent to the regeneration zone of the dehumidification wheel to desorb and regenerate the saturated adsorbent. After being driven by the exhaust fan, it is discharged after heat exchange with the regeneration air from the lower temperature;

[0020] During winter working conditions, the second air valve, the seventh air valve, the eighth air valve and the ninth air valve are opened, and the other air valves are closed. On the treated air side, the hot and humid indoor exhaust air is discharged through the second indoor air outlet, and is sent to the dehumidification zone of the dehumidification wheel after being cooled by the first evaporator. After adsorption and dehumidification by the adsorbent and temperature rise, it is sent to the second evaporator for further cooling and is driven by the exhaust fan to be discharged; on the regeneration air side, indoor fresh air enters through the first outdoor fresh air outlet, and is driven by the supply fan to pass through the sensible heat exchanger. At this time, the sensible heat exchanger does not work, and then enters the condenser. After being heated and heated, it is sent to the auxiliary air heater. After being heated to the regeneration temperature required for humidification, it is sent to the regeneration zone of the dehumidification wheel, desorbs the saturated adsorbent and absorbs moisture to become high-temperature and high-humidity fresh air, which is driven by the supply fan and sent to the air-conditioned room.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By utilizing heat pump technology, the waste heat from processed air and the adsorption heat generated during the dehumidification process are recovered for regeneration drive of the rotary dehumidifier. Two energy-saving measures, namely a heat recovery device and recovery of low-humidity indoor exhaust air, are added to reduce system energy consumption. Through the reasonable design of the system's air supply method, the system can be used in both winter and summer and the indoor air quality is guaranteed during winter use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a rotary dehumidification device according to an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of a rotary dehumidification system module according to an embodiment of the present invention;

[0025] Figure 3It is a flow chart of opening and closing of air valves in the rotary dehumidification air supply method according to an embodiment of the present invention.

[0026] In the figure, 1, dehumidification wheel regeneration zone; 2, auxiliary air heater; 3, condenser; 4, fifth air valve; 5, sensible heat exchanger; 6, ninth air valve; 7, first outdoor fresh air inlet; 8, eighth air valve; 9, fourth air valve; 10, air-conditioned room; 11, first indoor air outlet; 12, air-conditioning supply; 13, second indoor air outlet; 14, second outdoor fresh air inlet; 15, first air valve; 16, dehumidification wheel; 17, second-stage evaporator; 18, third air valve; 19, first-stage evaporator; 20, dehumidification wheel dehumidification zone; 21, capillary tube; 22, three-way regulating valve; 23, sixth air valve; 24, seventh air valve; 25, supply fan; 26, exhaust fan; 27, compressor; 28, second air valve. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0031] Embodiment 1

[0032] like Figure 1As shown, a rotary dehumidification device of a preferred embodiment of the present invention includes a primary evaporator 19, a dehumidification wheel 16, an auxiliary air heater 2, a condenser 3, a sensible heat exchanger 5, and a secondary evaporator 17. The input end of the primary evaporator 19 is connected to the second outdoor fresh air inlet 14 and the condenser 3, and the output end is connected to the input end of the dehumidification wheel 16. The output end of the dehumidification wheel 16 is connected to the input end of the secondary evaporator 17. The output end of the secondary evaporator 17 is connected to the sensible heat exchanger 5 and the input end of the air-conditioned room 10. The output end of the air-conditioned room 10 is connected to the input end of the primary evaporator 19 and the sensible heat exchanger 5. The output end of the sensible heat exchanger 5 is connected to the condenser 3. The output end of the condenser 3 is connected to the auxiliary air heater 2 and the input end of the primary evaporator 19. The output end of the auxiliary air heater 2 is connected to the input end of the dehumidification wheel 16. The first outdoor fresh air inlet 7 is connected to the air-conditioned room 10 and the input end of the sensible heat exchanger 5.

[0033] This embodiment also includes a first air valve 15, a second air valve 28, a third air valve 18, a fourth air valve 9, a fifth air valve 4, an eighth air valve 8 and a ninth air valve 6. The second outdoor fresh air outlet 14 is connected to the input end of the first-level evaporator 19 through the first air valve 15, the output end of the air-conditioned room 10 is connected to the first-level evaporator 19 through the second air valve 28, the output end of the secondary evaporator 17 is connected to the input end of the air-conditioned room 10 through the third air valve 18, the first outdoor fresh air outlet 7 is connected to the air-conditioned room 10 through the eighth air valve 8 and the fourth air valve 9 in turn, the first outdoor fresh air outlet 7 is connected to the input end of the sensible heat exchanger 5 through the eighth air valve 8, the secondary evaporator 17 is connected to the input end of the sensible heat exchanger 5, and the dehumidification wheel 16 is connected to the input end of the sensible heat exchanger 5 through the fifth air valve 4.

[0034] This embodiment also includes a sixth air valve 23, a seventh air valve 24, a blower 25, and an exhaust fan 26. The sensible heat exchanger 5 is connected to the air inlet of the exhaust fan 26 through the sixth air valve 23, the secondary evaporator 17 is connected to the air inlet of the exhaust fan 26 through the seventh air valve 24, and the air outlet of the exhaust fan 26 is connected to the outdoors. The dehumidification wheel 16 is connected to the air inlet of the blower 25 through the ninth air valve 6, the secondary evaporator 17 is connected to the air inlet of the blower 25 through the third air valve 18, and the air outlet of the blower 25 is connected to the air-conditioned room 10.

[0035] This embodiment also includes a compressor 27, the output end of the compressor 27 is connected to the condenser 3, the condenser 3 is connected to one end of the three-way regulating valve 22, the other two ends of the three-way regulating valve 22 are respectively connected to the secondary evaporator 17 and the primary evaporator 19, and the secondary evaporator 17 and the primary evaporator 19 are simultaneously connected to the input end of the compressor 27.

[0036] This embodiment further includes a capillary tube 21 , and the condenser 3 is connected to one end of a three-way regulating valve 22 through the capillary tube 21 .

[0037] The dehumidification wheel 16 includes a dehumidification wheel regeneration zone 1 and a dehumidification wheel dehumidification zone 20. The input end of the dehumidification wheel regeneration zone 1 is connected to the auxiliary air heater 2, and the output end is connected to the sensible heat exchanger 5 and the air-conditioned room 10. The input end of the dehumidification wheel dehumidification zone 20 is connected to the primary evaporator 19 and one end of the three-way regulating valve 22, and the output end is connected to the secondary evaporator 17.

[0038] Both the dehumidification wheel regeneration zone 1 and the dehumidification wheel dehumidification zone 20 are provided with adsorbent.

[0039] The thermodynamic cycle of the system is optimized and the energy consumption of the system is reduced. On the one hand, by precooling the treated air, the adsorbent temperature is reduced, thereby reducing the water vapor partial pressure on the adsorbent surface, thereby increasing the water vapor partial pressure difference between the treated air and the adsorbent surface (dehumidification driving force), thereby enhancing the dehumidification capacity. Since the dehumidification process of the dehumidification wheel 16 is approximately an isenthalpic process, increasing precooling does not increase the refrigeration capacity of the system. Therefore, under the same dehumidification capacity, precooling reduces the regeneration temperature of the system.

[0040] Embodiment 2

[0041] like Figure 2 As shown, a rotary dehumidification system based on the first embodiment includes a rotary dehumidification subsystem, a heat pump subsystem and a wind valve subsystem;

[0042] The rotary dehumidification subsystem includes a primary evaporator 19, a dehumidification rotary wheel 16, an auxiliary air heater 2, a condenser 3, a sensible heat exchanger 5, a secondary evaporator 17, a supply fan 25 and an exhaust fan 26; in summer, the rotary dehumidification subsystem provides low-temperature and low-humidity supply air for the air-conditioned room to achieve effective control of the temperature and humidity of the air-conditioned room; in winter, the rotary dehumidification subsystem provides fresh hot and humid air for the air-conditioned room to meet the requirements of room heating and humidification and improving air quality;

[0043] The heat pump subsystem includes a primary evaporator 19, a secondary evaporator 17, a condenser 3, a capillary tube 21, a three-way regulating valve 22 and a compressor 27. The heat pump subsystem provides the rotary dehumidification subsystem with a regenerative driving heat source required for dehumidification and a cold source required for cooling;

[0044] The air valve subsystem includes a first air valve 15, a second air valve 28, a third air valve 18, a fourth air valve 9, a fifth air valve 4, a sixth air valve 23, a seventh air valve 24, an eighth air valve 8 and a ninth air valve 6. The air valve subsystem cooperates with the rotary dehumidification subsystem to automatically adjust the opening and closing of the air valves according to different seasons to realize the system's winter and summer dual-use function.

[0045] The introduction of the sensible heat exchanger 5 and the heat pump subsystem realizes the recovery of the regenerated exhaust heat and the adsorption heat by the system, respectively, and solves the problems of large heat loss, high regeneration energy consumption and insufficient sensible heat treatment capacity of the existing system.

[0046] Embodiment 3

[0047] A heat source and cold source regeneration method based on Example 2 includes: the compressed high-temperature and high-pressure gaseous refrigerant is driven by the compressor 27 to be sent to the condenser 3, the regeneration air with a lower temperature is heated, and after heat release and condensation, it becomes a high-temperature and high-pressure liquid refrigerant, and is throttled and reduced in pressure by the capillary 21 to become a low-pressure and low-temperature liquid refrigerant, and then is diverted by the three-way regulating valve 22 to enter the primary evaporator 19 and the secondary evaporator 17 respectively, to cool the high-temperature treated air, and absorb heat and evaporate to become a low-temperature and low-pressure gaseous refrigerant, which is sent to the compressor 27 and the above process is circulated.

[0048] Embodiment 4

[0049] A rotary dehumidification air supply method includes the following two situations:

[0050] like Figure 3 As shown, in summer working conditions, the first air valve 15, the second air valve 28, the third air valve 18, the fourth air valve 9, the fifth air valve 4 and the sixth air valve 23 are opened, and the other air valves are closed. On the treated air side, the high-temperature and high-humidity outdoor fresh air is mixed with the indoor return air output from the second indoor air outlet 13 through the second outdoor fresh air outlet 14 and sent to the primary evaporator 19 for pre-cooling, and then sent to the dehumidification zone 20 of the dehumidification wheel. After dehumidification by adsorption by the adsorbent, due to the generation of adsorption heat, it becomes the treated air with high temperature and low humidity, and then cooled to the required indoor temperature through the secondary evaporator 17. The supply air 12 with a temperature of 100°C is finally driven by the supply fan 25 and sent to the air-conditioned room 10; on the regeneration air side, the indoor exhaust air with a low moisture content is sent to the sensible heat exchanger 5 through the first indoor air outlet 11 as the regeneration air, and exchanges heat with the regeneration exhaust air from a higher temperature. After the temperature rises, it is sent to the condenser 3 for heating, and the heat of the air on the treatment side is recovered and sent to the auxiliary air heater 2. After being heated to the regeneration temperature required for dehumidification, it is sent to the dehumidification wheel regeneration zone 1 to desorb and regenerate the moisture-saturated adsorbent, and is driven by the exhaust fan 26 to exchange heat with the regeneration air from a lower temperature before being discharged;

[0051] like Figure 3As shown, in winter working conditions, the second air valve 28, the seventh air valve 24, the eighth air valve 8 and the ninth air valve 6 are opened, and the other air valves are closed. On the treated air side, the hot and humid indoor exhaust air is discharged through the second indoor air outlet 13, and is sent to the dehumidification wheel dehumidification zone 20 after being cooled by the first evaporator 19. After being adsorbed and dehumidified by the adsorbent and the temperature rises, it is sent to the second evaporator 17 for further cooling and cooling, and is driven by the exhaust fan 26 to be discharged; on the regeneration air side, the indoor fresh air enters through the first outdoor fresh air outlet 7, and is driven by the blower 25 to pass through the sensible heat exchanger 5. At this time, the sensible heat exchanger 5 does not work, and then enters the condenser 3. After being heated and heated, it is sent to the auxiliary air heater 2. After being heated to the regeneration temperature required for humidification, it is sent to the dehumidification wheel regeneration zone 1, and after desorption and moisture absorption of the saturated adsorbent, it becomes high-temperature and high-humidity fresh air, which is driven by the blower 25 and sent to the air-conditioned room 10.

[0052] In summer, the rotary dehumidification subsystem provides low-temperature and low-humidity supply air 12 to the air-conditioned room 10 to achieve effective control of the temperature and humidity of the air-conditioned room. In winter, the rotary dehumidification subsystem provides fresh hot and humid supply air 12 to the air-conditioned room 10 to meet the needs of room heating and humidification and improve air quality.

[0053] The reasonable design of the air supply method of the system reduces the energy consumption of the system on the one hand, and realizes the dual-use function of the system in winter and summer on the other hand. In summer use, the indoor exhaust air with lower moisture content is recovered through the second indoor air outlet 13 as the regeneration air of the system, which enhances the dehumidification capacity of the system and reduces the regeneration energy consumption of the system; in winter use, the dehumidification wheel 16 is equivalent to a full heat recovery wheel, which can effectively recover the heat and mass of the hot and humid indoor exhaust air through the second indoor air outlet 13 to achieve energy saving. Because it is a new air system, it ensures that the room air quality is high when the windows are closed in winter.

[0054] In summary, the embodiments of the present invention provide a rotary dehumidification device, system, heat source and cold source regeneration and air supply method, which utilizes heat pump technology to recover the waste heat of processed air and the adsorption heat generated during the dehumidification process for the regeneration drive of the rotary dehumidification. It also adds a heat recovery device and two energy-saving measures for recycling low-humidity indoor exhaust air to reduce the energy consumption of the system. Through the reasonable design of the system's air supply method, the system can be used in both winter and summer and the indoor air quality is guaranteed during winter use.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A rotary dehumidification device, characterized in that: The air duct comprises a primary evaporator (19), a dehumidification wheel (16), an auxiliary air heater (2), a condenser (3), a sensible heat exchanger (5), and a secondary evaporator (17); the second outdoor fresh air outlet (14), the primary evaporator (19), the dehumidification wheel dehumidification zone (20), and the secondary evaporator (17) are sequentially arranged along the fresh air path; an output end of the sensible heat exchanger (5) is connected to an air duct input end of the condenser (3); and the air duct output end of the condenser (3) is sequentially connected to the auxiliary air heater (2) and the dehumidification wheel regeneration zone (1); The air conditioner also comprises a first air valve (15), a second air valve (28), a third air valve (18), a fourth air valve (9), a fifth air valve (4), a sixth air valve (23), a seventh air valve (24), an eighth air valve (8), a ninth air valve (6), an air supply fan (25) and an exhaust fan (26); the first air valve (15) is arranged at the entrance of the second outdoor fresh air outlet (14); the indoor return air outlet of the air-conditioned room (10) is connected to the air duct input end of the first-stage evaporator (19) through the second air valve (28); the third air valve (18) and the air supply fan (25) are arranged in sequence between the air duct output end of the second-stage evaporator (17) and the air supply outlet of the air-conditioned room (10); the first outdoor fresh air outlet (7) is connected to the air conditioner (19) through the eighth air valve (8) and the fourth air valve (9) in sequence; The indoor exhaust port of the room (10) is connected, a pipeline connected to an input end of the sensible heat exchanger (5) is provided between the eighth air valve (8) and the fourth air valve (9), a pipeline connected to the other input end of the sensible heat exchanger (5) through the ninth air valve (6) and the fifth air valve (4) is provided between the third air valve (18) and the air supply fan (25), the output end of the air duct of the dehumidification wheel regeneration zone (1) is connected to the pipeline between the fifth air valve (4) and the ninth air valve (6), the other output end of the sensible heat exchanger (5) is connected to the air inlet of the exhaust fan (26) through the sixth air valve (23), the output end of the air duct of the secondary evaporator (17) is also connected to the air inlet of the exhaust fan (26) through the seventh air valve (24), and the air outlet of the exhaust fan (26) is connected to the outdoors; In summer working conditions, the first to sixth air valves are opened, and the other air valves are closed. On the treated air side, outdoor fresh air is mixed with indoor return air output from the indoor return air outlet through the second outdoor fresh air outlet (14) and then sent to the primary evaporator (19) for precooling, and then flows through the dehumidification wheel dehumidification area (20) and the secondary evaporator (17) in sequence through the air supply fan (25) and sent to the air-conditioned room (10); on the regeneration air side, indoor exhaust air is sent to the sensible heat exchanger (5) as regeneration air through the indoor exhaust outlet, and is discharged through the exhaust fan (26) after heat exchange with the regeneration exhaust air in the sensible heat exchanger (5); In winter, the second, seventh to ninth air valves are opened, and the remaining air valves are closed. On the treated air side, the hot and humid indoor exhaust air is discharged through the indoor return air port, and is discharged by the exhaust fan (26) after passing through the primary evaporator (19), the dehumidification wheel dehumidification zone (20), and the secondary evaporator (17). On the regenerated air side, the sensible heat exchanger (5) does not work, and outdoor fresh air enters through the first outdoor fresh air port (7), and is driven by the air supply fan (25) to flow through the sensible heat exchanger (5), the condenser (3), the auxiliary air heater (2), and the dehumidification wheel regeneration zone (1) in sequence, and is then delivered to the air-conditioned room (10).

2. A rotary dehumidification device according to claim 1, characterized in that: The invention also comprises a compressor (27), wherein the output end of the compressor (27) is connected to the condenser (3), the condenser (3) is connected to one end of a three-way regulating valve (22), the other two ends of the three-way regulating valve (22) are respectively connected to the secondary evaporator (17) and the primary evaporator (19), and the secondary evaporator (17) and the primary evaporator (19) are simultaneously connected to the input end of the compressor (27).

3. A rotary dehumidification device according to claim 2, characterized in that: It also includes a capillary tube (21), and the condenser (3) is connected to one end of the three-way regulating valve (22) through the capillary tube (21).

4. A rotary dehumidification device according to claim 1, characterized in that: The dehumidification wheel regeneration zone (1) and the dehumidification wheel dehumidification zone (20) are both provided with adsorbent.

5. A rotary dehumidification system based on the rotary dehumidification device according to claim 1, characterized in that: It includes a rotary dehumidification subsystem, a heat pump subsystem and a wind valve subsystem; The rotary dehumidification subsystem includes a primary evaporator (19), a dehumidification rotary wheel (16), an auxiliary air heater (2), a condenser (3), a sensible heat exchanger (5), a secondary evaporator (17), a blower (25) and an exhaust fan (26); The heat pump subsystem includes a primary evaporator (19), a secondary evaporator (17), a condenser (3), a capillary tube (21), a three-way regulating valve (22) and a compressor (27). The heat pump subsystem provides the rotary dehumidification subsystem with a regenerative driving heat source required for dehumidification and a cold source required for cooling. The air valve subsystem comprises a first air valve (15), a second air valve (28), a third air valve (18), a fourth air valve (9), a fifth air valve (4), a sixth air valve (23), a seventh air valve (24), an eighth air valve (8) and a ninth air valve (6). The air valve subsystem cooperates with the rotary dehumidification subsystem to automatically adjust the opening and closing of the air valves according to different seasons.

6. A method for regenerating heat source and cold source of the rotary dehumidification system according to claim 5, characterized in that: The high-temperature and high-pressure gaseous refrigerant compressed is driven by a compressor (27) to be sent to a condenser (3) to heat the regenerated air, release heat and condense to become a high-temperature and high-pressure liquid refrigerant, and then throttle and reduce the pressure to become a low-pressure and low-temperature liquid refrigerant through a capillary tube (21). The refrigerant is then diverted by a three-way regulating valve (22) and enters a primary evaporator (19) and a secondary evaporator (17) respectively to cool the treated air, absorb heat and evaporate to become a low-temperature and low-pressure gaseous refrigerant, which is then sent to the compressor (27) and the above process is circulated.

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