A humidity control structure and air conditioner

Abstract

The present invention provides a temperature and humidity separate control structure and an air conditioner, comprising: a sensible heat control circuit, wherein the sensible heat control circuit is provided with a first evaporator, a first electronic expansion valve and a first pressure sensor, the first electronic expansion valve is connected to the first evaporator, and the first pressure sensor is electrically connected to the first electronic expansion valve controller; a dehumidification control circuit, wherein the dehumidification control circuit is provided with a second evaporator, a second electronic expansion valve and a second pressure sensor, the second electronic expansion valve is connected to the second evaporator, and the second pressure sensor is electrically connected to the second electronic expansion valve controller; the structure is simple, the operation is convenient, the energy waste of the air conditioner is avoided, and the service life of the humidifier is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a temperature and humidity separate control structure and an air conditioner. Background Art

[0002] High-precision processing and measurement applications, such as integrated circuit processing equipment and measuring instruments, require ultra-high-precision temperature and humidity environments (temperature control accuracy of ±0.1°C, humidity control accuracy of ±2%). These high-precision processing and measurement equipment are already placed in clean environments (with precise temperature and humidity control (temperature control accuracy of ±0.5°C, humidity control accuracy of ±5%) and minimal dust content), but the temperature and humidity still cannot meet the requirements for normal operation of the equipment, and a more stringent temperature and humidity environment is required.

[0003] Air-conditioning products provide a temperature and humidity environment with higher requirements through high-precision processing and measurement. However, the sensible heat control and dehumidification control of air-conditioning products on the market now are in the same system. When the system is in use, the sensible heat control circuit and the dehumidification control circuit work at the same time. When the air-conditioning dehumidification is not required, the dehumidification control circuit still works at the same time, resulting in energy waste and affecting the service life of the humidifier, requiring frequent maintenance. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a temperature and humidity separate control structure and an air conditioner, which has a simple structure and is easy to operate, avoids energy waste of the air conditioner, and increases the service life of the humidifier.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] The present invention provides a temperature and humidity separate control structure, characterized by comprising:

[0007] a sensible heat control circuit, wherein the sensible heat control circuit is provided with a first evaporator, a first electronic expansion valve, and a first pressure sensor, wherein the first electronic expansion valve is connected to the first evaporator, and the first pressure sensor is electrically connected to the first electronic expansion valve controller;

[0008] A dehumidification control circuit is provided with a second evaporator, a second electronic expansion valve and a second pressure sensor, the second electronic expansion valve is connected to the second evaporator, and the second pressure sensor is electrically connected to the second electronic expansion valve controller.

[0009] The present invention provides a temperature and humidity separate control structure and an air conditioner, which have a simple structure and are easy to operate, thereby avoiding energy waste of the air conditioner and prolonging the service life of the humidifier.

[0010] As a preferred technical solution, the first pressure sensor includes: a first intake pressure sensor and a first exhaust pressure sensor, the first intake pressure sensor is arranged at the sensible intake end of the sensible heat control loop, and the first exhaust pressure sensor is arranged at the sensible exhaust end of the sensible heat control loop. The opening of the first electronic expansion valve is regulated by the pressure difference between the sensible intake end and the sensible exhaust end to control the evaporation temperature in the first evaporator to be higher than the target dew point temperature of the air.

[0011] As an optimal technical solution, the sensible heat control circuit includes: a first variable frequency compressor and a water-cooled condenser, the first variable frequency compressor is used to compress the low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and the water-cooled condenser is used to condense the high-temperature and high-pressure gaseous refrigerant into a high-pressure liquid refrigerant, and the first variable frequency compressor is connected to the water-cooled condenser through a high-temperature and high-pressure gaseous refrigerant delivery pipeline.

[0012] As an optimal technical solution, the sensible heat control circuit includes: a first air inlet, the water-cooled condenser is connected to the first evaporator through a high-pressure liquid refrigerant delivery pipeline, the first electronic expansion valve is arranged on the high-pressure liquid refrigerant delivery pipeline, the first electronic expansion valve is used to throttle the high-pressure liquid refrigerant into a low-pressure gas-liquid two-phase refrigerant, and the windward side of the first evaporator is arranged opposite to the first air inlet so as to be able to exchange heat with the air in the first air inlet.

[0013] As a preferred technical solution, the sensible heat control loop includes: an electric heater, and the first evaporator is connected to the electric heater through a superheated steam pipe.

[0014] As an optimal technical solution, the sensible heat control circuit includes: a condensed water pressure regulating valve, which is connected to the exhaust pipe of the first variable frequency compressor through a capillary tube, and the condensed water pressure regulating valve controls the opening size of the condensed water pressure regulating valve through the exhaust pressure.

[0015] As a preferred technical solution, the second pressure sensor includes: a second suction pressure sensor and a second exhaust pressure sensor, the second suction pressure sensor is arranged at the dehumidification suction end of the dehumidification control circuit, and the second exhaust pressure sensor is arranged at the dehumidification exhaust end of the dehumidification control circuit. The opening of the second electronic expansion valve is regulated by the pressure difference between the dehumidification suction end and the dehumidification exhaust end to control the evaporation temperature in the second evaporator to be lower than the target dew point temperature of the air.

[0016] As an optimal technical solution, the dehumidification control circuit includes: a second variable frequency compressor and a condenser, the second variable frequency compressor is used to compress the low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and the condenser is used to condense the high-temperature and high-pressure gaseous refrigerant into a high-pressure liquid refrigerant, and the second variable frequency compressor is connected to the condenser through a high-temperature and high-pressure gaseous refrigerant delivery pipeline.

[0017] As an optimal technical solution, the condenser is connected to the second evaporator through a high-pressure liquid refrigerant delivery pipeline, and the second electronic expansion valve is arranged on the high-pressure liquid refrigerant delivery pipeline. The second electronic expansion valve is used to throttle the high-pressure liquid refrigerant into a low-pressure gas-liquid two-phase refrigerant.

[0018] The present invention provides an air conditioner, comprising: an air conditioner body and a temperature and humidity separate control structure as described in any one of the above items, wherein the temperature and humidity separate control structure comprises: a sensible heat control circuit and a dehumidification control circuit, and the sensible heat control circuit and the dehumidification control circuit are independently arranged on two groups of air conditioner bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural diagram of a moisture control structure provided by the present invention;

[0020] Among them: 1-first variable frequency compressor; 2-water-cooled condenser; 3-first electronic expansion valve; 4-first evaporator; 5-first suction pressure sensor; 6-first exhaust pressure sensor; 7-condensate pressure regulating valve; 8-second variable frequency compressor, 9-second electronic expansion valve; 10-second suction pressure sensor; 11-second exhaust pressure sensor; 12-electric heater; 13-condenser; 14-second evaporator; 15-dehumidification control circuit; 16-sensible heat control circuit; 17-first air inlet; 18-cooling water. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] It can be understood that the present invention is to achieve the purpose of the present invention through some embodiments, such as Figure 1 As shown, the present invention provides a temperature and humidity control structure, comprising:

[0023] A sensible heat control circuit, wherein the sensible heat control circuit 16 is provided with a first evaporator 4, a first electronic expansion valve 3 and a first pressure sensor, the first electronic expansion valve 3 being connected to the first evaporator 4, the first pressure sensor being electrically connected to the first electronic expansion valve controller, the first pressure sensor comprising: a first intake pressure sensor 5 and a first exhaust pressure sensor 6, the first intake pressure sensor 5 being arranged at the sensible heat intake end of the sensible heat control circuit 16, the first exhaust pressure sensor 6 being arranged at the sensible heat exhaust end of the sensible heat control circuit 16, the pressure at the sensible heat intake end being monitored by the first intake pressure sensor 5, the pressure at the sensible heat exhaust end being monitored by the first exhaust pressure sensor 6, the pressure difference between the pressure at the sensible heat intake end and the pressure at the sensible heat exhaust end being calculated, the opening degree of the first electronic expansion valve 3 being regulated by the pressure difference between the sensible heat intake end and the sensible heat exhaust end so as to control the evaporation temperature in the first evaporator 4 to be higher than the target dew point temperature of the air, and the sensible heat control circuit 16 being used to process the sensible heat of the target ambient air;

[0024] A dehumidification control circuit 15 is provided with a second evaporator 14, a second electronic expansion valve 9, and a second pressure sensor. The second electronic expansion valve 9 is connected to the second evaporator 14, and the second pressure sensor is electrically connected to the second electronic expansion valve controller. The second pressure sensor includes: a second intake pressure sensor 10 and a second exhaust pressure sensor 11. The second intake pressure sensor 10 is provided at the dehumidification intake end of the dehumidification control circuit 15, and the second exhaust pressure sensor 11 is provided at the dehumidification exhaust end of the dehumidification control circuit 15. The pressure at the dehumidification intake end is detected by the second intake pressure sensor 10, and the pressure at the dehumidification exhaust end is detected by the second exhaust pressure sensor 11. The pressure difference between the pressure at the dehumidification intake end and the pressure at the dehumidification exhaust end is calculated. The opening of the second electronic expansion valve 9 is controlled by the pressure difference between the dehumidification intake end and the dehumidification exhaust end to control the evaporation temperature in the second evaporator 14 to be lower than the target dew point temperature of the air. The dehumidification control circuit 15 is used to reduce the humidity of the target ambient air.

[0025] The sensible heat control circuit 16 and the dehumidification control circuit 15 are independently provided on two sets of air conditioner bodies.

[0026] A temperature and humidity separate control structure is applied to air conditioning, using a first variable frequency compressor 1 and a second variable frequency compressor 8, which can achieve stepless input of cooling capacity (for example, cooling capacity adjustment from 20% to 100%).

[0027] The sensible heat control loop 16 maintains the evaporation temperature above the target air dew point temperature by adjusting the frequency of the first variable frequency compressor 1 and the opening size of the first electronic expansion valve 3. It only lowers the air temperature (sensible heat treatment) without performing dehumidification treatment.

[0028] The dehumidification control circuit 15 only lowers the humidity of the target air. The dehumidification control circuit 15 extracts part of the air whose temperature has been lowered, passes it through the second evaporator 14, and controls the evaporation temperature of the second evaporator 14 to be lower than the target dew point temperature of the air for dehumidification. The dehumidified air exchanges heat with the air at the first air inlet and is heated by the electric heater to increase its temperature. The heated air returns to the air intake of the second variable frequency compressor 8 and is cooled again.

[0029] Within the cooling and cooling capacity range of the first variable-frequency compressor 1 and the second variable-frequency compressor 8 (for example, the cooling capacity is adjusted from 20% to 100%), the electric heater 12 does not work; when it is below the cooling and cooling range (for example, the cooling capacity needs to be adjusted from 0 to 20%), the first variable-frequency compressor 1 runs at a low speed, and the electric heater 12 works to meet the cooling capacity demand of 0 to 20%; when the ambient temperature needs to be raised, the steplessly adjustable electric heater 12 works to heat to the required heating capacity to meet the temperature requirements of the target environment.

[0030] When the air conditioner only cools down and does not dehumidify, only the sensible heat control circuit 16 is turned on, and the dehumidification control circuit 15 is not turned on. The first variable frequency compressor 1 is connected to the water-cooled condenser 2 through a high-temperature and high-pressure gaseous refrigerant delivery pipeline. The water-cooled condenser 2 is connected to the first evaporator 4 through a high-pressure liquid refrigerant delivery pipeline. The first electronic expansion valve 3 is arranged on the high-pressure liquid refrigerant delivery pipeline. The first electronic expansion valve 3 is used to throttle the high-pressure liquid refrigerant into a low-pressure gas-liquid two-phase refrigerant. The first variable frequency compressor 1 is used to compress the low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The first variable frequency compressor 1 compresses The high-temperature and high-pressure gaseous refrigerant is transported to the water-cooled condenser 2 through the high-temperature and high-pressure gaseous refrigerant transport pipeline. The water-cooled condenser 2 is used to condense the high-temperature and high-pressure gaseous refrigerant into a high-pressure liquid refrigerant. The water-cooled condenser 2 condenses the high-pressure liquid refrigerant into the first evaporator 4 through the high-pressure liquid refrigerant transport pipeline, and is throttled by the first electronic expansion valve 3 to become a low-pressure gas-liquid two-phase refrigerant. The first pressure sensor is electrically connected to the first electronic expansion valve controller. The first pressure sensor includes: a first suction pressure sensor 5 and a first exhaust pressure sensor 6. The first suction pressure sensor 5 is arranged on the sensible heat The sensible heat intake end of the control loop 16, the first exhaust pressure sensor 6 is arranged at the sensible heat exhaust end of the sensible heat control loop 16, the pressure signal of the sensible heat intake end is monitored by the first intake pressure sensor 5, the pressure signal of the sensible heat exhaust end is monitored by the first exhaust pressure sensor 6, the pressure difference data of the sensible heat intake end and the sensible heat exhaust end is calculated, the pressure difference data between the sensible heat intake end and the sensible heat exhaust end is transmitted to the first electronic expansion valve controller, and the first electronic expansion valve controller adjusts the opening size of the first electronic expansion valve 3 to control the low-pressure gas-liquid two-phase cooling entering the first evaporator 4. The flow rate of the medium is adjusted to achieve the goal of controlling the evaporation temperature in the first evaporator 4 to be higher than the target dew point temperature of the air. The windward side of the first evaporator 4 is arranged opposite to the first air inlet 17 so as to be able to exchange heat with the air in the first air inlet 17. The windward side of the first evaporator 4 is connected to the electric heater 12 through a superheated steam pipe. The windward side of the first evaporator 4 exchanges heat with the target air (only cooling, not dehumidifying) to become superheated steam, and then returns to the electric heater 12 to process the sensible heat of the target ambient air. It has a simple structure and is easy to operate, which avoids energy waste of air conditioning and increases the service life of the humidifier.

[0031] When the air conditioner is only dehumidifying and not cooling, only the dehumidification control circuit 15 is turned on, and the sensible heat control circuit 16 is not turned on. The second variable frequency compressor 8 is used to compress the low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and the condenser 13 is used to condense the high-temperature and high-pressure gaseous refrigerant into a high-pressure liquid refrigerant. The second variable frequency compressor 8 will compress the high-temperature and high-pressure gaseous refrigerant and transport it to the condenser 13 through the high-temperature and high-pressure gaseous refrigerant delivery pipeline. The condenser 13 will condense the high-pressure liquid refrigerant and transport it to the second evaporator 14 through the high-pressure liquid refrigerant delivery pipeline. Two electronic expansion valves 9 are arranged on the high-pressure liquid refrigerant delivery pipeline. The second electronic expansion valve 9 is used to throttle the high-pressure liquid refrigerant into a low-pressure gas-liquid two-phase refrigerant. The second pressure sensor is electrically connected to the second electronic expansion valve controller. The second pressure sensor includes: a second suction pressure sensor 10 and a second exhaust pressure sensor 11. The second suction pressure sensor 10 is arranged at the dehumidification suction end of the dehumidification control circuit 15, and the second exhaust pressure sensor 11 is arranged at the dehumidification exhaust end of the dehumidification control circuit 15. The pressure signal of the dehumidification suction end is monitored by the second suction pressure sensor 10, and the pressure signal of the dehumidification exhaust end is monitored by the second exhaust pressure sensor 11. The pressure difference data between the pressure at the dehumidification suction end and the pressure at the dehumidification exhaust end is calculated, and the pressure difference data between the dehumidification suction end and the dehumidification exhaust end is transmitted to the second electronic expansion valve controller. The second electronic expansion valve controller adjusts the opening size of the second electronic expansion valve 9 to control the flow rate of the low-pressure gas-liquid two-phase refrigerant entering the second evaporator 14, so as to control the evaporation temperature in the second evaporator 14 to be lower than the target dew point temperature of the air. The windward side of the second evaporator 14 is arranged opposite to the first air inlet 17. The second variable frequency compressor 8 is provided with an air intake. The second evaporator 14 is connected to the air intake of the second variable frequency compressor 8 through a superheated steam pipe. The steam is exchanged with the air in the first air inlet 17 and heated by the electric heater 12 to generate superheated steam. The superheated steam is then transmitted to the air intake of the second variable frequency compressor 8 through the superheated steam pipe to reduce the humidity of the target ambient air. The humidifier has a simple structure and is easy to operate, thereby avoiding waste of energy consumption and improving the service life of the humidifier.

[0032] The condensed water pressure regulating valve 7 is connected to the exhaust pipe of the first variable frequency compressor 1 through a capillary tube. The condensed water pressure regulating valve 7 controls the opening size of the condensed water pressure regulating valve 7 through the exhaust pressure, thereby adjusting the size of the cooling water flow, reducing the heat exchange fluctuation of the water-cooled condenser 2, and ensuring the stability of the condensing temperature of the sensible heat control loop.

[0033] When the air conditioner needs to dehumidify and cool at the same time, the sensible heat control circuit 16 and the dehumidification control circuit 15 are opened at the same time. The structure is simple, the operation is convenient, the waste of energy consumption is avoided, and the service life of the humidifier is prolonged.

[0034] The present invention provides a temperature and humidity separate control structure and an air conditioner, which have a simple structure and are easy to operate, thus avoiding waste of energy consumption and prolonging the service life of a humidifier.

[0035] It will be appreciated that the present invention is described through some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are subject to various changes or equivalent substitutions. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope protected by the present invention.

Claims

1. A temperature and humidity control structure, characterized in that: include: a sensible heat control circuit (16), wherein the sensible heat control circuit (16) is provided with a first evaporator (4), a first electronic expansion valve (3) and a first pressure sensor, wherein the first electronic expansion valve (3) is connected to the first evaporator (4), and the first pressure sensor is electrically connected to a first electronic expansion valve controller; a dehumidification control circuit (15), wherein the dehumidification control circuit (15) is provided with a second evaporator (14), a second electronic expansion valve (9) and a second pressure sensor, the second electronic expansion valve (9) is connected to the second evaporator (14), and the second pressure sensor is electrically connected to the second electronic expansion valve controller; The first pressure sensor comprises: a first intake pressure sensor (5) and a first exhaust pressure sensor (6), wherein the first intake pressure sensor (5) is arranged at the sensible heat intake end of the sensible heat control circuit (16), and the first exhaust pressure sensor (6) is arranged at the sensible heat exhaust end of the sensible heat control circuit (16), and the opening of the first electronic expansion valve (3) is regulated by the pressure difference between the sensible heat intake end and the sensible heat exhaust end to control the evaporation temperature in the first evaporator (4) to be higher than the target dew point temperature of the air; The sensible heat control loop comprises: a condensed water pressure regulating valve (7), wherein the condensed water pressure regulating valve (7) is connected to the exhaust pipe of the first variable frequency compressor (1) via a capillary tube.

2. The temperature and humidity separate control structure according to claim 1, characterized in that: The sensible heat control circuit (16) comprises: a first variable frequency compressor (1) and a water-cooled condenser (2); the first variable frequency compressor (1) is connected to the water-cooled condenser (2) via a high-temperature and high-pressure gaseous refrigerant delivery pipeline.

3. The temperature and humidity separate control structure according to claim 2, characterized in that: The sensible heat control circuit (16) includes: a first air inlet (17); the water-cooled condenser (2) is connected to the first evaporator (4) through a high-pressure liquid refrigerant delivery pipeline; the first electronic expansion valve (3) is arranged on the high-pressure liquid refrigerant delivery pipeline; the windward side of the first evaporator (4) is arranged opposite to the first air inlet (17) so as to be able to exchange heat with the air in the first air inlet (17).

4. The temperature and humidity separate control structure according to claim 3, characterized in that: The sensible heat control circuit (16) comprises an electric heater (12), and the first evaporator (4) is connected to the electric heater (12) via a superheated steam pipe.

5. The temperature and humidity separate control structure according to claim 1, wherein the dehumidification control circuit (15) comprises: A second variable frequency compressor (8) and a condenser (13), wherein the second variable frequency compressor (8) is connected to the condenser (13) via a high-temperature and high-pressure gaseous refrigerant delivery pipeline.

6. The temperature and humidity separate control structure according to claim 5, characterized in that: The condenser (13) is connected to the second evaporator (14) through a high-pressure liquid refrigerant delivery pipeline, and the second electronic expansion valve (9) is arranged on the high-pressure liquid refrigerant delivery pipeline.

7. An air conditioner, characterized in that: include: The air-conditioning body and the temperature and humidity separate control structure as described in any one of claims 1 to 6 above, wherein the temperature and humidity separate control structure comprises: a sensible heat control circuit (16) and a dehumidification control circuit (15), and the sensible heat control circuit (16) and the dehumidification control circuit (15) are independently arranged on two groups of air-conditioning bodies.

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