High-precision energy-saving constant temperature and humidity machine

Abstract

The utility model discloses a high accuracy energy -conserving constant temperature and humidity machine, including indoor unit, outdoor unit and control unit, still include the compressor of circulating intercommunication, reheating condenser, outdoor condenser, indoor evaporator and humidifier, and compressor and heat exchanger subassembly constitute closed loop refrigeration heating cycle system, and reheating condenser is provided in parallel with outdoor condenser, and the high temperature high pressure gas of compressor discharge can respectively enter outdoor condenser and reheating condenser, adopt the structure that reheating condenser is provided in parallel with outdoor condenser, and the high temperature high pressure gas of compressor discharge can be shunted and enter two branch, need not rely on the temperature compensation of high -power consumption's electric heating module in traditional scheme, under the indoor temperature is close to setting value or dehumidification not cooling condition, realize temperature balance through reheating condenser and utilize the heat that refrigerant carries itself, avoided the electric energy waste that electric heating module and compressor refrigeration amount " counter -attack " caused, and the unit operation energy consumption is reduced greatly.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, specifically a high-precision energy-saving constant temperature and humidity machine. Background Technology

[0002] As a device that can precisely control indoor temperature and humidity, constant temperature and humidity machines are widely used in laboratories, data centers, precision manufacturing workshops and other scenarios with stringent environmental parameter requirements. Currently, the mainstream constant temperature and humidity machines on the market mainly combine electric heating modules with humidifiers, and use the stepless adjustment function of electric heating to precisely control the cooling output, thereby achieving indoor heat exchange balance and achieving the purpose of precise temperature and humidity control.

[0003] However, in environments with low heat generation, when the indoor temperature is close to the set value, the required cooling output is minimal, while the compressor's cooling capacity remains constant. At this point, the electric heating power needs to be close to the compressor's cooling capacity to maintain temperature balance, resulting in huge energy consumption of the electric heater and significantly increasing the overall energy consumption of the unit. Furthermore, in dehumidification mode, when the indoor temperature has reached the set value but the humidity is still excessive, the compressor needs to run continuously to complete dehumidification. During dehumidification, the indoor temperature will decrease simultaneously. To achieve "dehumidification without cooling," temperature compensation must be achieved through electric heating, further exacerbating the energy burden. Therefore, we need to propose a high-precision, energy-saving constant temperature and humidity machine. Utility Model Content

[0004] The purpose of this utility model is to provide a high-precision energy-saving constant temperature and humidity machine. By setting up a parallel structure of a reheat condenser and an outdoor condenser, and a specific finned heat exchanger and a matching fan, the refrigerant flow is rationally allocated, achieving the effect of eliminating the need for electric heating compensation and reducing energy consumption, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-precision, energy-saving constant temperature and humidity machine includes: an indoor unit, an outdoor unit, and a control unit; it also includes a compressor, a reheat condenser, an outdoor condenser, an indoor evaporator, and a humidifier connected in a circulating manner; the compressor and heat exchanger assembly form a closed-loop refrigeration and heating cycle system; the reheat condenser and the outdoor condenser are connected in parallel, and the high-temperature, high-pressure gas discharged from the compressor can enter the outdoor condenser and the reheat condenser respectively; the outdoor condenser is a copper tube finned condenser and is equipped with an outdoor fan; the indoor evaporator is a copper tube finned heat exchanger and is equipped with an indoor fan; the reheat condenser is a small-diameter copper tube finned reheat condenser and is located between the compressor and the indoor evaporator.

[0006] Preferably, the indoor evaporator and the reheat condenser are stacked inside the indoor unit, and the reheat condenser is located on the leeward side.

[0007] Preferably, it also includes a three-way valve, a shut-off valve, a liquid reservoir, a filter, a liquid indicator, a first electronic expansion valve, and a second electronic expansion valve; On the parallel branch where the outdoor condenser is located, the compressor and the outdoor condenser are connected by a three-way valve, and the outdoor condenser and the indoor evaporator are connected in sequence by a shut-off valve, a filter, a liquid level indicator, a first electronic expansion valve and a liquid receiver.

[0008] Preferably, on the parallel branch where the reheat condenser is located, a filter and a second electronic expansion valve are sequentially connected between the reheat condenser and the indoor evaporator.

[0009] Preferably, it also includes a control unit for controlling the switching status and opening degree of each component, wherein the control unit is connected to the compressor, outdoor fan, indoor fan, first electronic expansion valve, second electronic expansion valve, humidifier and temperature and humidity sensor by signal or electrical connection.

[0010] Preferably, it also includes a high-pressure switch for controlling shutdown when the system reaches high pressure and a low-pressure switch for controlling compressor start-stop when the system reaches low pressure.

[0011] Preferably, the humidifier and the reheat condenser are respectively set up and operate in coordination with the instructions of the control unit to regulate the indoor humidity.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention employs a structure in which a reheat condenser and an outdoor condenser are connected in parallel. The high-temperature, high-pressure gas discharged from the compressor can be diverted into two branches, eliminating the need for temperature compensation using the high-power electric heating module found in traditional solutions. When the indoor temperature is close to the set value or when dehumidification does not lower the temperature, the reheat condenser utilizes the heat carried by the refrigerant itself to achieve temperature balance. This avoids the energy waste caused by the "counteracting" of the cooling capacity of the electric heating module and the compressor, significantly reducing the unit's operating energy consumption. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the refrigerant circulation system of this utility model.

[0014] In the diagram: 1. Indoor unit; 2. Compressor; 3. T-junction; 4. Outdoor unit; 5. Outdoor condenser; 6. Outdoor fan; 7. Shut-off valve; 8. Liquid receiver; 9. Filter; 10. Indicator mirror; 11. First electronic expansion valve; 12. Second electronic expansion valve; 13. Control unit; 14. Reheat condenser; 15. Indoor evaporator; 16. Indoor fan; 17. Humidifier; 18. High-pressure switch; 19. Low-pressure switch; 20. Temperature and humidity sensor. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-2 This utility model provides a technical solution: A high-precision energy-saving constant temperature and humidity machine includes an indoor unit 1, an outdoor unit 4, and a control unit 13. It also includes a compressor 2, a reheat condenser 14, an outdoor condenser 5, an indoor evaporator 15, and a humidifier 17, which are connected in a circulating manner. The compressor 2 and the heat exchanger assembly form a closed-loop refrigeration and heating cycle system. The reheat condenser 14 and the outdoor condenser 5 are connected in parallel. The high-temperature and high-pressure gas discharged from the compressor 2 can enter the outdoor condenser 5 and the reheat condenser 14 respectively. The outdoor condenser 5 is a copper tube finned condenser and is equipped with an outdoor fan 6. The indoor evaporator 15 is a copper tube finned heat exchanger and is equipped with an indoor fan 16. The reheat condenser 14 is a small-diameter copper tube finned reheat condenser and is located between the compressor 2 and the indoor evaporator 15.

[0017] By setting up a core structure in which the reheat condenser 14 and the outdoor condenser 5 are connected in parallel, and by matching different types of finned heat exchangers and supporting fans, while clarifying the connection relationship and installation position of each component, the refrigerant can be diverted and circulated, ensuring the basic efficiency of heat exchange, and laying the structural foundation for subsequent precise temperature and humidity control and energy-saving operation.

[0018] Furthermore, the indoor evaporator 15 and the reheat condenser 14 are stacked within the indoor unit 1, with the reheat condenser 14 located on the leeward side. By arranging the indoor evaporator 15 and the reheat condenser 14 in a stacked configuration within the indoor unit 1, and placing the reheat condenser 14 on the leeward side, the direct impact of airflow on reheat efficiency is avoided, the internal space utilization of the indoor unit 1 is optimized, and it is ensured that the airflow processed by the indoor evaporator 15 can stably flow through the reheat condenser 14 to complete the secondary temperature regulation.

[0019] Furthermore, the high-precision energy-saving constant temperature and humidity unit also includes a three-way valve 3, a shut-off valve 7, a liquid receiver 8, a filter 9, a liquid level indicator 10, a first electronic expansion valve 11, and a second electronic expansion valve 12. On the parallel branch where the outdoor condenser 5 is located, the compressor 2 is connected to the outdoor condenser 5 via the three-way valve 3. The outdoor condenser 5 and the indoor evaporator 15 are sequentially connected via the shut-off valve 7, filter 9, liquid level indicator 10, first electronic expansion valve 11, and liquid receiver 8. The three-way valve 3 enables the switching of the compressor 2 between the two branches. The shut-off valve 7, filter 9, liquid level indicator 10, first electronic expansion valve 11, and liquid receiver 8 are sequentially installed on the outdoor condenser 5 branch to achieve the effects of refrigerant on / off control, impurity filtration, status observation, precise flow adjustment, and refrigerant storage, ensuring the stable and orderly operation of the refrigerant circulation in this branch.

[0020] Furthermore, in the parallel branch where the reheat condenser 14 is located, a filter 9 and a second electronic expansion valve 12 are connected in sequence between the reheat condenser 14 and the indoor evaporator 15. By setting the filter 9 and the second electronic expansion valve 12 in series in the reheat condenser 14 branch, impurities are filtered from the refrigerant flowing through this branch, preventing impurities from damaging subsequent components. At the same time, the second electronic expansion valve 12 precisely regulates the refrigerant flow rate in the branch to adapt to the reheat requirements of the reheat condenser 14, ensuring the stability and precision of the branch operation.

[0021] It is worth noting that the high-precision energy-saving constant temperature and humidity machine also includes a control unit 13 for controlling the on / off status and opening degree of each component. The control unit 13 is connected by signal or electrical means to the compressor 2, outdoor fan 6, indoor fan 16, first electronic expansion valve 11, second electronic expansion valve 12, humidifier 17, and temperature and humidity sensor 20. By setting the control unit 13 to the signal or electrical means of each core actuator and temperature and humidity sensor 20, real-time indoor temperature and humidity data can be collected, and the start / stop, operating status, and opening degree of each component can be precisely controlled. This achieves automated and intelligent control of temperature and humidity regulation, ensuring both fast adjustment response and high control accuracy.

[0022] It is worth noting that the high-precision energy-saving constant temperature and humidity machine also includes a high-pressure switch 18 for controlling the shutdown when the system reaches high pressure and a low-pressure switch 19 for controlling the start and stop of the compressor 2 when the system reaches low pressure. By setting the high-pressure switch 18 and the low-pressure switch 19 to monitor the system pressure respectively, the machine can be shut down when high pressure is reached and the compressor 2 can be started and stopped when low pressure is reached. This effectively avoids the risk of component damage caused by overpressure or underpressure operation, ensures the safe operation of the entire machine, and extends the service life of the equipment.

[0023] In this embodiment, the humidifier 17 and the reheat condenser 14 are correspondingly arranged and operate in coordination with the commands of the control unit 13 to regulate indoor humidity. By setting the corresponding layout and coordinated operation mode of the humidifier 17 and the reheat condenser 14, the moisture released by the humidifier 17 can be fully integrated with the airflow processed by the reheat condenser 14 under the control of the control unit 13, thereby improving the uniformity of humidity regulation and preventing moisture from directly contacting low-temperature components to produce condensation, thus ensuring the humidity regulation effect and the stability of system operation.

[0024] Working Principle: The control unit 13 receives indoor temperature and humidity data collected by the temperature and humidity sensor 20 in real time, compares it with the set value, and then precisely regulates the operation of each component. When cooling is required, the control unit 13 controls the compressor 2 to start. The high-temperature and high-pressure refrigerant flows mainly into the outdoor condenser 5 through the three-way valve 3, and completes heat dissipation with the help of the outdoor fan 6. After the refrigerant passes through the shut-off valve 7, filter 9, liquid level indicator 10, and first electronic expansion valve 11 for throttling and pressure reduction, it enters the indoor evaporator 15. Under the action of the indoor fan 16, it exchanges heat with the indoor air to achieve cooling. After heat exchange, the refrigerant flows back to the compressor 2 through the liquid receiver 8 to complete the cycle. When the indoor temperature is close to the set value or dehumidification is required without cooling, the control unit 13 adjusts the three-way valve 3 to allow part or all of the high-temperature and high-pressure refrigerant to flow. The refrigerant enters the reheat condenser 14, where temperature compensation or reheating is achieved using the refrigerant's own heat, eliminating the need to activate the electric heating module. Simultaneously, the refrigerant flow rate in the reheat condenser 14 branch is regulated via the second electronic expansion valve 12 to precisely control the amount of reheating. During dehumidification, after the indoor evaporator 15 completes dehumidification, the reheat condenser 14 reheats the cooled airflow to ensure stable indoor temperature. When humidification is required, the control unit 13 controls the humidifier 17 to operate in conjunction with the reheat condenser 14. The humidifier 17 releases moisture, which mixes with the airflow processed by the reheat condenser 14 and is then delivered into the room to regulate humidity. Throughout the entire operation, the high-pressure switch 18 and low-pressure switch 19 monitor the system pressure in real time to ensure safe system operation, ultimately achieving a synergistic effect of high-precision temperature and humidity control and energy-saving operation.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision, energy-saving constant temperature and humidity machine, characterized in that, include: Indoor unit (1), outdoor unit (4) and control unit (13); It also includes a circulating compressor (2), a reheat condenser (14), an outdoor condenser (5), an indoor evaporator (15), and a humidifier (17). The compressor (2) and the heat exchanger assembly constitute a closed-loop refrigeration and heating cycle system; The reheat condenser (14) and the outdoor condenser (5) are connected in parallel, and the high-temperature and high-pressure gas discharged by the compressor (2) can enter the outdoor condenser (5) and the reheat condenser (14) respectively. The outdoor condenser (5) is a copper tube finned condenser and is equipped with an outdoor fan (6). The indoor evaporator (15) is a copper tube finned heat exchanger and is equipped with an indoor fan (16). The reheat condenser (14) is a small-diameter copper tube finned reheat condenser and is located between the compressor (2) and the indoor evaporator (15).

2. The high-precision energy-saving constant temperature and humidity machine according to claim 1, characterized in that: The indoor evaporator (15) and the reheat condenser (14) are stacked inside the indoor unit (1), and the reheat condenser (14) is located on the leeward side.

3. The high-precision energy-saving constant temperature and humidity machine according to claim 1, characterized in that: It also includes a three-way valve (3), a shut-off valve (7), a liquid reservoir (8), a filter (9), a liquid indicator (10), a first electronic expansion valve (11), and a second electronic expansion valve (12); On the parallel branch where the outdoor condenser (5) is located, the compressor (2) is connected to the outdoor condenser (5) through a three-way valve (3), and the outdoor condenser (5) and the indoor evaporator (15) are connected in sequence by a shut-off valve (7), a filter (9), a liquid level indicator (10), a first electronic expansion valve (11) and a liquid receiver (8).

4. A high-precision energy-saving constant temperature and humidity machine according to claim 3, characterized in that: On the parallel branch where the reheat condenser (14) is located, a filter (9) and a second electronic expansion valve (12) are connected in sequence between the reheat condenser (14) and the indoor evaporator (15).

5. A high-precision energy-saving constant temperature and humidity machine according to claim 1, characterized in that: It also includes a control unit (13) for controlling the switching status and opening degree of each component. The control unit (13) is connected to the compressor (2), outdoor fan (6), indoor fan (16), first electronic expansion valve (11), second electronic expansion valve (12), humidifier (17) and temperature and humidity sensor (20) by signal or electrical connection.

6. A high-precision energy-saving constant temperature and humidity machine according to claim 1, characterized in that: It also includes a high-pressure switch (18) for controlling shutdown when the system reaches high pressure and a low-pressure switch (19) for controlling the start and stop of the compressor (2) when the system reaches low pressure.

7. A high-precision energy-saving constant temperature and humidity machine according to claim 1, characterized in that: The humidifier (17) is configured in conjunction with the reheat condenser (14) and operates in coordination with the instructions of the control unit (13) to regulate indoor humidity.

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