Dual-evaporator temperature and humidity control integrated unit

Abstract

The application provides a double-evaporator temperature and humidity control integrated unit, belonging to the technical field of refrigeration and air conditioning equipment, comprising an outdoor unit and an indoor fresh air unit, wherein the outdoor unit is composed of a high-temperature evaporator, a four-way valve, a condenser, a compressor, a gas-liquid separator and an expansion valve, and the indoor fresh air unit is composed of a low-temperature evaporator, an expansion valve, a filter, a wind valve, a heat exchange core, a fan and an air inlet. In order to solve the problem of pressure imbalance, a pressure regulating valve is installed at the outlet of the high-temperature evaporator, and a check valve is installed at the outlet of the low-temperature evaporator. The indoor fresh air unit is provided with a heat exchange core, so that fresh air precooling and air reheating can be realized at the same time. The high-temperature evaporator provides cold and hot water for the air conditioner terminal to bear the indoor sensible heat load, and the low-temperature evaporator processes the fresh air to bear the indoor latent heat load and part of the sensible heat load, so that temperature and humidity control can be realized by one unit. The application has the advantages of compact structure, reduced energy consumption and convenient operation and maintenance.

Description

Technical Field

[0001] This invention relates to the field of refrigeration and air conditioning equipment technology, and more specifically to a dual-evaporator temperature and humidity control integrated unit. Background Technology

[0002] Traditional air conditioning systems typically employ a heat-humidity coupling approach, which often results in difficulties achieving optimal heat and humidity balance during operation, leading to energy waste. Temperature and humidity control systems, on the other hand, offer more precise control over the indoor thermal environment and avoid some of the drawbacks of traditional systems. Among various temperature and humidity control systems, radiant cooling systems with fresh air intake are particularly suitable for small to medium-sized residential buildings. They effectively increase the uniformity of temperature distribution in the conditioned space, reduce drafts and airflow noise, thereby significantly improving the comfort of the conditioned environment.

[0003] In radiant cooling and fresh air conditioning systems, the radiant terminals and fresh air handling units typically require cold and heat sources at different temperatures. This necessitates the installation of two separate units producing cold and heat sources at different temperatures, leading to high initial investment and significantly increased operating energy consumption. Using a single cold and heat source requires a mixing device, which significantly reduces system energy efficiency and is uneconomical. While direct expansion fresh air handling units can reduce the number of cold and heat source units, they still require separate cold and heat sources and fresh air equipment, operating independently, resulting in a large footprint, high energy consumption, and a complex system structure.

[0004] Currently, research on integrated units for independent temperature and humidity control air conditioning systems mainly includes dual-evaporator chiller-hot water units and dual-evaporator fresh air units. However, existing technologies still lack an innovative integrated unit that deeply integrates fresh air units and chiller-heater units, while also possessing high integration and convenient installation and maintenance. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a dual-evaporator temperature and humidity control integrated unit. While processing fresh air, one unit can provide a cold and heat source for the air conditioning terminal, further simplifying the temperature and humidity control air conditioning system. The indoor fresh air unit is equipped with a sensible heat exchanger to utilize fresh air for reheating, reducing energy consumption and improving the comfort of the air-conditioned room.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dual-evaporator temperature and humidity control integrated unit includes an outdoor unit and radiant terminals; the outdoor unit provides cooling to the radiant terminals.

[0008] The outdoor unit includes a compressor, a four-way valve, a condenser, a first expansion valve, and a high-temperature evaporator, which are connected by pipes inside the outdoor unit casing, forming a refrigeration system.

[0009] The radiation terminal comprises a water distributor, a water collector and a plurality of radiation terminals, the water distributor is connected to the high-temperature evaporator through a water supply pipeline, and after heat exchange, low-temperature cold water is distributed to the plurality of radiation terminals, the water collector collects high-temperature cold water after heat exchange through the plurality of radiation terminals, and the high-temperature cold water is concentrated and delivered to the high-temperature evaporator through a water return pipeline, and the water return pipeline is provided with a water pump;

[0010] The integrated unit further comprises an indoor fresh air machine, and the outdoor machine supplies cold air for the indoor fresh air machine.

[0011] The indoor fresh air machine comprises an indoor fresh air machine shell, and an independent air inlet area, an air outlet area, a heat exchange area and a heat exchange core body are arranged in the indoor fresh air machine shell, the air inlet area is provided with a fresh air inlet, the air outlet area is provided with an air outlet, the heat exchange core body is internally provided with an air inlet channel and an air outlet channel, the heat exchange core body is connected to the air inlet area and the heat exchange area through the air inlet channel, and the heat exchange core body is connected to the heat exchange area and the air outlet area through the air outlet channel.

[0012] The heat exchange area is provided with a low-temperature evaporator, the low-temperature evaporator is connected to a four-way valve and a condenser through pipelines respectively, and the pipeline connected to the condenser is provided with a third expansion valve.

[0013] As a further preferred scheme, a second one-way valve and a pressure regulating valve are arranged on the pipeline between the high-temperature evaporator and the four-way valve, a fourth one-way valve and a check valve are arranged on the pipeline between the low-temperature evaporator and the four-way valve, and a gas-liquid separator is arranged on the pipeline between the suction port of the compressor of the four-way valve and the compressor.

[0014] As a further preferred scheme, a parallel pipeline is arranged on the pipeline at the first expansion valve, the parallel pipeline is provided with a first one-way valve and a second expansion valve, a parallel pipeline is arranged on the pipeline at the third expansion valve, the parallel pipeline is provided with a fourth expansion valve and a third one-way valve, a parallel pipeline is arranged on the pipeline at the second one-way valve and the pressure regulating valve, the parallel pipeline is provided with a first stop valve, and a parallel pipeline is arranged on the pipeline at the fourth one-way valve and the check valve, the parallel pipeline is provided with a second stop valve.

[0015] As a further preferred scheme, a buffer tank is arranged on the water supply pipeline and the water return pipeline connected to the high-temperature evaporator, and the low-temperature cold water in the water supply pipeline and the high-temperature cold water in the water return pipeline are mixed in the buffer tank.

[0016] As a further preferred scheme, a damper and a filter are arranged at the fresh air inlet.

[0017] As a further preferred scheme, the heat exchange core body is in the form of an alternating arrangement of a plurality of air inlet channels and a plurality of air outlet channels, the air inlet channels and the air outlet channels are in a wave structure, and adjacent air inlet channels and air outlet channels are separated by a heat conduction plate.

[0018] As a further preferred scheme, the air supply outlet is provided with a humidifier (for humidification when turned on in winter), an ultraviolet sterilization lamp, a dust removal device and the like.

[0019] As a further preferred scheme, the high-temperature evaporator adopts a plate heat exchanger, and the low-temperature evaporator adopts a finned tube heat exchanger.

[0020] As a further preferred scheme, temperature sensors and pressure sensors are arranged on the compressor, the high-temperature evaporator, the low-temperature evaporator, the inlet and outlet of the condenser and the water supply and return pipelines of the refrigerant circulation main circuit, and temperature and humidity sensors are arranged at the air supply outlet and in the room, so as to facilitate monitoring of the operation condition of the unit. Advantages

[0021] Compared with the prior art, the system integration and operation efficiency are significantly improved, and the application has the advantages of small occupied area, low cost, easy control and maintenance and the like. The pressure imbalance problem existing in the double-evaporator parallel system is effectively solved by arranging the pressure regulating valve and the check valve, so as to ensure stable operation of the unit. The heat exchange core body arranged in the indoor fresh air machine not only solves the comfort problem caused by too low air supply temperature of the traditional direct expansion fresh air unit, but also further improves the quality of the indoor environment. The variable frequency compressor and the electronic expansion valve are adopted, so that the refrigerant distribution ratio between the two evaporators can be optimized under partial load, and efficient and continuous control of the indoor temperature and humidity is realized. One unit of the application can realize indoor heat and humidity control, can supply cold and hot water to various terminal ends such as radiant terminal and fan coil, and can also cool and dehumidify the fresh air, independently and accurately control the sensible heat and latent heat load, and meet the needs of small buildings and residential buildings for accurate temperature and humidity control. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of a double-evaporator temperature and humidity control integrated unit;

[0023] Figure 2 is a working principle diagram of an indoor fresh air machine in the application;

[0024] Figure 3 is a system principle diagram of the application;

[0025] Explanation of reference signs: compressor 1; four-way valve 2; gas-liquid separator 3; pressure regulating valve 4; second check valve 5; first stop valve 6; high-temperature evaporator 7; first check valve 8; second expansion valve 9; first expansion valve 10; outdoor unit shell 11; condenser fan 12; condenser 13; fourth expansion valve 14; third check valve 15; third expansion valve 16; low-temperature evaporator 17; fourth check valve 18; check valve 19; second stop valve 20; indoor fresh air unit shell 21; fresh air inlet 22; air damper 23; filter 24; heat exchange core 25; supply air fan 26; supply air outlet 27; supply air duct 28; indoor supply air outlet 29; buffer water tank 30; water pump 31; water distributor 32; water collector 33; radiant terminal 34. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0027] The present application provides a dual-evaporator temperature and humidity control integrated unit, which comprises an outdoor unit 11 and an indoor fresh air unit 21. The outdoor unit 11 provides high-temperature cold water for the radiant terminal 34 to bear indoor sensible heat load. The indoor fresh air unit 21 cools and dehumidifies fresh air and supplies the indoor to bear latent heat load and part of sensible heat load.

[0028] The outdoor unit is composed of a high-temperature evaporator 7, a four-way valve 2, a condenser 13, a compressor 1, a gas-liquid separator 3, a second expansion valve 9, a first expansion valve 10, a first check valve 8, a second check valve 5, a pressure regulating valve 4 and a first stop valve 6.

[0029] The indoor fresh air unit is composed of a low-temperature evaporator 17, a fourth expansion valve 14, a third expansion valve 16, a third check valve 15, a fourth check valve 18, a check valve 19, a second stop valve 20, a filter 24, an air damper 23, a heat exchange core 25, a fan 26, a supply air outlet 27 and a fresh air inlet 22.

[0030] In the present application, two evaporators are connected in parallel to control indoor temperature and humidity respectively. Since the evaporation temperatures of the two evaporators are different, the evaporation pressures are also different, which causes pressure imbalance. One of the key technologies of the present application is to solve this problem. In order to ensure that each evaporator can work normally at its own evaporation temperature without interfering with each other, there are several solutions as follows:

[0031] (1) Increase a jet flow guiding device. The advantage of this scheme is that there is no other power device in the system except the compressor, and the unit runs stably. The disadvantage is that the jet flow guiding device has low efficiency, and it is not easy to achieve accurate control of temperature and humidity.

[0032] (2) Install a power device such as a gas-driven gas booster or a small pressure ratio compressor. Install a power device between the high-temperature evaporator and the low-temperature evaporator, and make the low-pressure fluid pressurized to the same level as the high-pressure fluid before entering the compressor. This scheme makes up for the shortcomings of the above scheme, but the presence of two power devices in the system will complicate the control system.

[0033] (3) Use a double-suction compressor. Selecting a double-suction compressor can improve compressor efficiency, but at the same time it will complicate the system selection and increase the cost.

[0034] (4) Install an evaporative pressure regulating valve on the return gas pipeline at the outlet of the high-temperature evaporator, and install a check valve on the return gas pipeline at the outlet of the low-temperature evaporator. Because the high-temperature evaporation pressure is high and the low-temperature evaporation pressure is low, and the suction pressure of the compressor is the same as the low-temperature evaporation pressure, the evaporative pressure regulating valve can maintain a relatively high pressure in front of the valve corresponding to the high-temperature reservoir, and maintain the same suction pressure as the low-temperature return gas pressure behind the valve, so that the evaporators of different evaporation temperatures in the refrigeration system can operate normally independently. Compared with the above scheme, this solution makes the system structure simpler and reduces the cost. The present invention selects this scheme to solve the problem of pressure imbalance, installs a pressure regulating valve on the return gas main of the high-temperature evaporator, and maintains the stability of the evaporation pressure by controlling the flow of the return gas. A check valve is installed at the outlet of the low-temperature evaporator return gas pipeline to prevent liquid refrigerant from flowing back to the low-temperature evaporator.

[0035] In the present invention, the indoor fresh air machine corresponds to a direct expansion fresh air unit, and the fresh air and the refrigerant exchange heat in the low-temperature evaporator 17, and the fresh air is cooled and dehumidified. When cooling and dehumidification means are used for fresh air, in order to let the fresh air be processed to the required humidity content of the radiant air conditioning system, the temperature of the fresh air at the outlet of the unit is often too low. Usually, when the supply air humidity content is about 9 g / kg (dry air), the temperature of the fresh air is about 12℃. When the temperature of the fresh air is too low, not only is the outlet prone to condensation, but also it will cause uneven temperature distribution in the room, so the fresh air needs to be reheated before being sent into the room. The present invention adds a heat recovery device in the indoor fresh air machine. The fresh air cooled and dehumidified by the low-temperature evaporator 17 exchanges heat with the fresh air from the outside in the heat exchange core 25, and is sent into the room through the fan after reaching the appropriate temperature.

[0036] Further, the heat exchange core 25 in the indoor fresh air machine is a sensible heat exchanger, which simultaneously realizes pre-cooling of fresh air and reheating of supply air. The heat exchange core 25 is a rhombus-shaped large-area cross-counterflow aluminum sensible heat exchanger. When the fresh air cooled and dehumidified in the sensible heat exchanger and the outdoor fresh air flow through the heat exchange core 25 in a cross-flow manner, respectively, due to the temperature difference between the airflows on both sides of the airflow partition plate, the two airflows exhibit heat transfer phenomenon when passing through the partition plate, causing sensible heat exchange process. This process only involves temperature change and does not change the humidity of the fresh air, so it can simultaneously realize pre-cooling of fresh air and reheating of supply air, and plays a role in reducing energy consumption.

[0037] As Figure 1 shown, the exhaust port of the compressor 1 is connected to the D interface of the four-way valve, the C interface of the four-way valve is connected to the air pipe inlet of the high-temperature evaporator 7 and the low-temperature evaporator 17 respectively, the two evaporators are connected in parallel, the two evaporator outlets are connected to the condenser 13, and finally connected to the air return port A of the compressor 1 to form a closed refrigerant circulation main loop.

[0038] The unit is connected in parallel with two evaporators with different evaporation temperatures, a pressure reducing valve is installed on the air return pipeline at the outlet of the high-temperature evaporator 7, and a check valve 19 is installed on the air return pipeline at the outlet of the low-temperature evaporator 17.

[0039] The second expansion valve 9 and the first one-way valve 8 are connected in parallel in the first expansion valve 10 dry route, the first stop valve 6 is connected in parallel in the pressure regulating valve 4 and the second one-way valve 5 dry route, the fourth expansion valve 14 and the third one-way valve 15 are connected in parallel in the third expansion valve 16 dry route, and the second stop valve 20 is connected in parallel in the check valve 19 and the fourth one-way valve 18 18 dry route.

[0040] Further, the working principle of the double-evaporator temperature and humidity control integrated unit is as follows:

[0041] In summer refrigeration working condition, the first and second stop valves of the integrated unit are closed to block the flow of refrigerant. The high-temperature and high-pressure refrigerant gas discharged by the compressor 1 passes through the A interface of the four-way valve and enters the condenser 13. After being condensed and releasing heat to the air in the condenser 13, the medium-temperature and high-pressure refrigerant liquid is divided into two paths. One path becomes a low-temperature and low-pressure refrigerant gas-liquid mixture after being throttled by the first expansion valve 10 and enters the high-temperature evaporator 7 to exchange heat with water to produce high-temperature cold water for the radiation terminal 34. The second path enters the low-temperature evaporator 17 after being throttled by the third expansion valve 16 to exchange heat with fresh air for dehumidification and cooling treatment. The low-temperature and low-pressure refrigerant gas from the high-temperature evaporator 7 is reduced in pressure by the pressure regulating valve 4 to the refrigerant pressure at the outlet of the low-temperature evaporator 17. The refrigerant from the low-temperature evaporator 17 passes through the check valve 19 and mixes with the refrigerant gas passing through the pressure regulating valve 4, enters the gas-liquid separator 3 to separate part of the liquefied refrigerant liquid, and finally enters the suction end of the compressor 1 to be compressed again by the compressor 1 to form a continuous refrigeration cycle.

[0042] The refrigerant exchanges heat with water in the high-temperature evaporator 7 to produce high-temperature cold water at 16-18°C, and the cold source is distributed to each air-conditioned room through a water distributor for use by the radiation terminal 34. The refrigerant exchanges heat with fresh air in the low-temperature evaporator 17 to cool and dehumidify the fresh air. The cooled and dehumidified fresh air exchanges heat with fresh air from the outside in the heat exchange core 25, and is sent into the room through a fan after being heated to a suitable temperature. The condenser 13 dissipates the heat of the refrigeration cycle to the outdoor air.

[0043] Specifically, the working process of the indoor fresh air machine in the refrigeration mode is as follows: fresh air enters from the fresh air inlet 22, is cooled and dehumidified to the dew point temperature by the low-temperature evaporator 17, exchanges sensible heat with outdoor fresh air in the heat exchange core 25, and is sent into the room through the air outlet 27 after being heated to a suitable temperature by a fan.

[0044] In the heating mode in winter, the refrigerant circulation direction is switched by the four-way valve 2, and the first and second stop valves are opened to allow the refrigerant to flow. The refrigerant flow path is along the compressor 1, the four-way valve 2, the C port of the four-way valve 2, along the high-temperature evaporator 7, the low-temperature evaporator 17, the condenser 13, the gas-liquid separator 3, and finally into the suction end of the compressor 1. The refrigerant exchanges heat with water in the high-temperature evaporator 7 to produce low-temperature hot water for use by the radiation terminal. The low-temperature evaporator 17 heats outdoor fresh air to be sent into the room, and the indoor fresh air machine can also be selected to be turned off.

[0045] Therefore, high-temperature cold water and dry fresh air can be provided in the refrigeration mode. Low-temperature hot water can be provided in the heating mode, and the indoor fresh air machine can be selected to be turned on or off according to the indoor demand.

[0046] A water distributor 32 and a water collector 33 are installed on the water supply and return pipes of the outdoor unit. On the one hand, the water distributor 32 and the water collector 33 distribute the water flow of the main pipe according to the cooling / heating needs of the building to ensure that the flow of each regional branch circuit meets the cooling / heating load needs. At the same time, the water flow of each branch circuit is collected and input into the main water return pipe to realize circulation operation. On the other hand, in order to facilitate adjustment and control, valves are arranged on each branch circuit of the water distributor 32 and the water collector 33, and the valves bear the tasks of flow distribution and adjustment. A water pump 31 and a buffer tank 30 are installed on the water return pipe. The buffer tank 30 has the functions of effectively solving the temperature fluctuation caused by the over-small system load and the frequent start-up of the main unit, avoiding too large water temperature fluctuation to affect the heating effect during defrosting in winter, and hydraulic pressure distribution.

[0047] Preferably, a filter 24 is arranged at the fresh air inlet 22 of the indoor fresh air machine 21, and a humidifier, an ultraviolet disinfection lamp, a dust removal device, and other additional equipment are arranged at the air outlet 27.

[0048] Preferably, the indoor fresh air machine is provided with a wind valve 23, which is independently controlled and suitable for the fresh air demand in different scenes.

[0049] Preferably, the high-temperature evaporator 7 is a plate heat exchanger, and the low-temperature evaporator 17 is a finned tube heat exchanger.

[0050] The compressor is a variable frequency compressor, the compressor 1 is provided with a gas-liquid separator 3 at the suction side, and the expansion valves are all electronic expansion valves, so that the refrigerant flow can be reduced under partial load, the distribution ratio of the refrigerant flow of two evaporators can be adjusted, and the continuous control of indoor temperature and humidity can be achieved.

[0051] The temperature sensor and / or pressure sensor are arranged in each component of the refrigerant circulation main circuit, which helps to control the operation of the air conditioning system, so as to ensure that the indoor temperature and humidity are in the best state.

[0052] The scheme can realize the functions of the fresh air machine and the cold and hot water machine set by one machine set, and further simplifies the composition of the radiant air conditioning system with fresh air. The dual-evaporator temperature and humidity control integrated machine set can fully meet the requirements of providing cold and hot water, fresh air dehumidification, purification, temperature adjustment and the like, the system only has one refrigeration cycle, only needs to be provided with one compressor and one power device, the energy saving effect is obvious, the machine set has high integration degree, and installation is convenient.

[0053] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dual-evaporator temperature and humidity control integrated unit, comprising an outdoor unit and a radiation terminal; the outdoor unit supplies cooling for the radiation terminal; The outdoor unit comprises a compressor (1), a four-way valve (2), a condenser (13), a first expansion valve (10), and a high-temperature evaporator (7) connected by pipes in an outdoor unit shell (11), forming a set of refrigeration system; The radiation terminal comprises a water distributor (32), a water collector (33), and a plurality of radiation terminals (34); the water distributor (32) is connected to the high-temperature evaporator (7) through a water supply pipe to distribute low-temperature cold water to the plurality of radiation terminals (34) after heat exchange; the water collector (33) collects high-temperature cold water after heat exchange in the plurality of radiation terminals (34) through a return water pipe and then concentrates and delivers the high-temperature cold water to the high-temperature evaporator (7); the return water pipe is provided with a water pump (31); characterized in that The integrated unit further comprises an indoor fresh air unit, and the outdoor unit supplies cooling for the indoor fresh air unit; The indoor fresh air unit comprises an indoor fresh air unit shell (21) and an independent air inlet area, an air outlet area, a heat exchange area, and a heat exchange core (25) arranged in the indoor fresh air unit shell (21); the air inlet area is provided with a fresh air inlet (22); the air outlet area is provided with an air outlet (27); the heat exchange core (25) is internally provided with an air inlet channel and an air outlet channel; the heat exchange core (25) is connected to the air inlet area and the heat exchange area through the air inlet channel and is connected to the heat exchange area and the air outlet area through the air outlet channel; The heat exchange area is provided with a low-temperature evaporator (17); the low-temperature evaporator (17) is connected to the four-way valve (2) and the condenser (13) through pipes; the pipe connected to the low-temperature evaporator (17) and the condenser (13) is provided with a third expansion valve (16); The pipe between the high-temperature evaporator (7) and the four-way valve (2) is provided with a second one-way valve (5) and a pressure regulating valve (4); the pipe between the low-temperature evaporator (17) and the four-way valve (2) is provided with a fourth one-way valve (18) and a check valve (19); the pipe between the compressor suction port of the four-way valve (2) and the compressor (1) is provided with a gas-liquid separator (3).

2. The dual-evaporator temperature and humidity integrated control unit of claim 1, wherein: The pipe at the first expansion valve (10) is provided with a parallel pipe A; the parallel pipe A is provided with a first one-way valve (8) and a second expansion valve (9); the pipe at the third expansion valve (16) is provided with a parallel pipe B; the parallel pipe B is provided with a fourth expansion valve (14) and a third one-way valve (15); the pipe at the second one-way valve (5) and the pressure regulating valve (4) is provided with a parallel pipe C; the parallel pipe C is provided with a first stop valve (6); the pipe at the fourth one-way valve (18) and the check valve (19) is provided with a parallel pipe D; the parallel pipe D is provided with a second stop valve (20).

3. The dual-evaporator temperature and humidity integrated control unit of claim 2, wherein: The water distributor (32) and the water collector (33) are provided with a buffer water tank (30) on the water supply pipe and the return water pipe connected to the high-temperature evaporator (7); the low-temperature cold water in the water supply pipe and the high-temperature cold water in the return water pipe are mixed in the buffer water tank (30).

4. The dual-evaporator temperature and humidity integrated control unit of claim 2, wherein: The fresh air inlet (22) is provided with a damper (23) and a filter (24).

5. The dual evaporator temperature and humidity integrated control unit of claim 2, wherein: The heat exchange core (25) is in the form of an alternating arrangement of a plurality of layers of air inlet channels and a plurality of layers of air outlet channels, the air inlet channels and the air outlet channels are in a wave structure, and adjacent air inlet channels and air outlet channels are separated by heat conduction plates.

6. The dual evaporator temperature and humidity integrated control unit of claim 2, wherein: The air supply outlet (27) is provided with a humidifier, an ultraviolet disinfection lamp and a dust removal device.

7. The dual evaporator temperature and humidity integrated control unit of claim 2, wherein: The high-temperature evaporator (7) is a plate heat exchanger, and the low-temperature evaporator (17) is a finned tube heat exchanger.

8. The dual evaporator temperature and humidity integrated control unit of claim 2, wherein: Temperature sensors and pressure sensors are arranged on the inlets and outlets of the compressor (1), the high-temperature evaporator (7), the low-temperature evaporator (17) and the condenser (13), and on the water supply and return pipelines, and temperature and humidity sensors are arranged at the air supply outlet (27) and in the room, so that the operating conditions of the unit can be monitored.

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