Split type integrated temperature and humidity adjusting system and energy storage liquid cooling unit electric cabinet

Abstract

The utility model discloses a split type integrated temperature and humidity adjusting system and energy storage liquid cooling unit electric cabinet. The split type integrated temperature and humidity adjusting system and energy storage liquid cooling unit electric cabinet comprises an air duct shell, a dehumidification coil pipe, an evaporator, a compressor, a first condenser, a first electronic expansion valve, a second electronic expansion valve, a temperature detection device and a control device. A low-temperature and low-pressure gaseous refrigerant is compressed into a high-temperature and high-pressure gaseous refrigerant by the compressor, enters the first condenser, is condensed to become a high-temperature liquid refrigerant, is throttled and depressurized by the electronic expansion valve to become a gas-liquid mixed refrigerant and enters the dehumidification coil pipe, and air enters the dehumidification coil pipe from an air return opening of the air duct shell to be dehumidified by the dehumidification coil pipe. And a refrigerant in the dehumidification coil pipe is used for refrigerating air. The arrangement of the electronic expansion valve can adjust the flow of the refrigerant according to the actual demand, prevents the refrigerant from being excessive or insufficient, further improves the energy efficiency of the system, reduces the energy consumption, solves the problem of condensation of the electrochemical energy storage cabinet in a low-cost manner, and reduces the occupied space of the electrochemical energy storage cabinet at the same time.

Description

Technical Field

[0001] This utility model relates to the field of dehumidification, and in particular to a split-type integrated temperature and humidity control system and an electrical cabinet for an energy storage liquid cooling unit. Background Technology

[0002] Electrochemical energy storage cabinets generate heat during operation. Temperature changes inside the cabinet can cause localized condensation on the surface of batteries and wiring harnesses, which can affect the insulation performance of devices and cables. Currently, in order to solve the problem of condensation in electrochemical energy storage cabinets, dehumidification equipment is usually added to the cabinets. However, the assembly of such equipment is not flexible and convenient, and often requires additional piping, which increases complexity. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide an integrated temperature and humidity control system and an energy storage liquid cooling unit cabinet, which can solve the problem of condensation in electrochemical energy storage cabinets in a low-cost manner, while reducing the space occupied by electrochemical energy storage cabinets, and making the assembly of the integrated temperature and humidity control system more flexible.

[0004] In a first aspect, this embodiment proposes a split-type integrated temperature and humidity control system, comprising:

[0005] compressor;

[0006] The first condenser is connected to the discharge port of the compressor.

[0007] The dehumidification module includes a duct housing and a dehumidification coil. The dehumidification coil is disposed inside the duct housing. The duct housing is provided with a return air inlet and a supply air inlet. Air enters from the return air inlet, passes through the dehumidification coil, and exits from the supply air inlet. The input end of the dehumidification coil is connected to the output end of the first condenser through a first electronic expansion valve, and the output end of the dehumidification coil is connected to the suction port of the compressor.

[0008] An evaporator, the input end of which is connected to the output end of the first condenser via a second electronic expansion valve, and the output end of which is connected to the suction port of the compressor;

[0009] Temperature detection equipment is used to detect the temperature of the refrigerant in the system;

[0010] The control device is electrically connected to the dehumidification module, the evaporator, the compressor, the first condenser, the temperature detection device, the first electronic expansion valve, and the second electronic expansion valve, respectively.

[0011] The dehumidifying coil and the evaporator are connected in parallel to form a first parallel group. The input terminals of the first electronic expansion valve and the second electronic expansion valve are the input terminals of the first parallel group. The output terminal of the first parallel group is connected to the suction port of the compressor.

[0012] According to some embodiments of this utility model, the dehumidification module further includes a second condenser and a dehumidification fan. The second condenser and the dehumidification fan are both disposed inside the air duct housing. The control device is electrically connected to the second condenser and the dehumidification fan respectively. Air enters from the return air inlet, passes through the dehumidification coil, the dehumidification fan and the second condenser in sequence, and then exits from the air supply outlet.

[0013] The first condenser and the second condenser are connected in parallel to form a second parallel group. The output ends of the first condenser and the second condenser are the output ends of the second parallel group. The input end of the first parallel group is connected to the output end of the second parallel group, and the input end of the second parallel group is connected to the exhaust port of the compressor.

[0014] According to some embodiments of the present invention, the system further includes a cooling fan located on one side of the first condenser. The cooling fan has a higher power than the dehumidifying fan and is used to dissipate heat for the entire system.

[0015] According to some embodiments of the present invention, a first proportional valve is provided between the compressor and the first condenser.

[0016] According to some embodiments of the present invention, a second proportional valve is provided between the compressor and the second condenser.

[0017] According to some embodiments of this utility model, after the compressor compresses the refrigerant, the refrigerant is divided into two paths. The first path of refrigerant passes through the first proportional valve and the first refrigerant coil in sequence; the second path of refrigerant passes through the second proportional valve and the second condenser in sequence. After the first path of refrigerant and the second path of refrigerant merge at the output end of the first condenser, they are divided into a third path of refrigerant and a fourth path of refrigerant. The third path of refrigerant passes through the first electronic expansion valve and the dehumidification coil and returns to the suction port of the compressor. The fourth path of refrigerant passes through the second electronic expansion valve and the evaporator and returns to the suction port of the compressor.

[0018] According to some embodiments of this utility model, a first shut-off valve is provided between the output end of the dehumidifying coil and the suction port of the compressor; a second shut-off valve is provided between the input end of the first electronic expansion valve and the input end of the first parallel group; a third shut-off valve is provided between the output end of the second condenser and the output end of the first condenser; a fourth shut-off valve is provided between the second proportional valve and the first proportional valve; the first shut-off valve, the second shut-off valve, the third shut-off valve and the fourth shut-off valve are used for disassembling and assembling the system.

[0019] Secondly, this embodiment proposes an energy storage liquid cooling unit electrical cabinet, including the split-type integrated temperature and humidity control system as described in the first aspect above.

[0020] The split-type integrated temperature and humidity control system and energy storage liquid cooling unit electrical cabinet according to the embodiments of this utility model have at least the following beneficial effects:

[0021] This embodiment achieves efficient dehumidification and energy recycling by rationally configuring the dehumidification module, evaporator, compressor, first condenser, electronic expansion valve, first electronic expansion valve, second electronic expansion valve, temperature detection equipment, and control device.

[0022] By dynamically adjusting the refrigerant flow rate with a first electronic expansion valve and a second electronic expansion valve at the input ends of the dehumidification coil and evaporator, respectively, the priority of dehumidification and cooling is precisely allocated, ensuring the stability of temperature and humidity control. Furthermore, the high-temperature refrigerant output from the compressor preferentially flows through the first condenser to release heat and become a high-temperature liquid refrigerant. It then undergoes throttling and pressure reduction through both the first and second electronic expansion valves. The refrigerant after pressure reduction via the first electronic expansion valve cools and dehumidifies in the dehumidification coil, and the refrigerant after pressure reduction via the second electronic expansion valve cools and dehumidifies in the dehumidification coil, thus solving the problem of condensation in the electrochemical energy storage cabinet and reducing the space occupied by the electrochemical energy storage cabinet.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 A schematic diagram of the split-type integrated temperature and humidity control system provided in this embodiment of the utility model;

[0026] Figure label:

[0027] 1. Compressor; 2. First proportional valve; 3. First condenser; 4. Cooling fan; 5. Fourth shut-off valve; 6. Second proportional valve; 7. Third shut-off valve; 8. Duct housing; 9. Dehumidifying coil; 10. Dehumidifying fan; 11. Second condenser; 12. First electronic expansion valve; 13. Second shut-off valve; 14. First shut-off valve; 15. Second electronic expansion valve; 16. Evaporator; 17. Return air inlet; 18. Air supply outlet. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] The following description, in conjunction with the accompanying drawings, details the split-type integrated temperature and humidity control system and the energy storage liquid chiller unit electrical cabinet of this application.

[0033] Firstly, referring to Figure 1 This utility model embodiment proposes a split-type integrated temperature and humidity control system, including:

[0034] Compressor 1;

[0035] The first condenser 3 is connected to the discharge port of the compressor 1.

[0036] The dehumidification module includes a duct housing 8 and a dehumidification coil 9. The dehumidification coil 9 is disposed inside the duct housing 8. The duct housing 8 is provided with a return air inlet 17 and an air supply inlet 18. Air enters from the return air inlet 17, passes through the dehumidification coil 9, and exits from the air supply inlet 18. The input end of the dehumidification coil 9 is connected to the output end of the first condenser 3 through the first electronic expansion valve 12, and the output end of the dehumidification coil 9 is connected to the suction port of the compressor 1.

[0037] Evaporator 16, the input end of evaporator 16 is connected to the output end of first condenser 3 through second electronic expansion valve 15, and the output end of evaporator 16 is connected to the suction port of compressor 1.

[0038] Temperature detection equipment (not shown) is used to detect the temperature of the refrigerant in the system;

[0039] The control device (not shown) is electrically connected to the dehumidification module, evaporator 16, compressor 1, first condenser 3, temperature detection device, first electronic expansion valve 12 and second electronic expansion valve 15 respectively;

[0040] The dehumidifying coil 9 and the evaporator 16 are connected in parallel to form a first parallel group. The input end of the first electronic expansion valve 12 and the input end of the second electronic expansion valve 15 are the input ends of the first parallel group. The output end of the first parallel group is connected to the suction port of the compressor 1.

[0041] The compressor 1 compresses the refrigerant to keep it under high pressure and high temperature. The refrigerant starts from the compressor 1, passes through the first condenser 3 and the dehumidification coil 9, heats the air in the dehumidification coil 9, and then returns to the compressor 1.

[0042] It is understandable that refrigerants include, but are not limited to, Freon and tetrafluoroethane.

[0043] Specifically, a first proportional valve 2 is provided between the compressor 1 and the first condenser 3. A second proportional valve 6 is provided between the compressor 1 and the second condenser 11.

[0044] Specifically, the dehumidification module also includes a second condenser 11 and a dehumidification fan 10. The control device is electrically connected to the second condenser 11 and the dehumidification fan 10. Air enters from the return air inlet 17, passes through the dehumidification coil 9, the dehumidification fan 10 and the second condenser 11 in sequence, and then exits from the air supply outlet 18.

[0045] The first condenser 3 and the second condenser 11 are connected in parallel to form a second parallel group. The output end of the first condenser 3 and the output end of the second condenser 11 are the output ends of the second parallel group. The input end of the first parallel group and the output end of the second parallel group are connected. The input end of the second parallel group is connected to the exhaust port of the compressor 1.

[0046] Specifically, the system also includes a cooling fan 4, which is located on one side of the first condenser 3. The cooling fan 4 has a higher power than the dehumidifying fan 10 and is used to dissipate heat for the entire system.

[0047] Specifically, compressor 1 draws in low-temperature, low-pressure refrigerant from evaporator 16. Compressing the refrigerant in compressor 1 brings it to a high-temperature, high-pressure gaseous state. After compression, the refrigerant is divided into two paths. The first path passes through the first proportional valve 2 and the first condenser 3 in sequence. The second path passes through the second proportional valve 6 and the second condenser 11 in sequence. The first and second paths merge at the output of the first condenser 3 and then split into a third and a fourth path. The third path passes through the first electronic expansion valve 12 and the dehumidification coil 9 before returning to the suction port of compressor 1. The fourth path passes through the second electronic expansion valve 15 and the evaporator 16 before returning to the suction port of compressor 1. When the second refrigerant passes through the second condenser 11, it releases heat in the second condenser 11; after the third refrigerant passes through the first electronic expansion valve 12 for throttling and pressure reduction, it becomes a low-temperature, low-pressure gas-liquid mixture and absorbs heat in the dehumidification coil 9; after the fourth refrigerant passes through the second electronic expansion valve for throttling and pressure reduction, it also becomes a low-temperature, low-pressure gas-liquid mixture and absorbs heat in the evaporator 16, where the evaporator 16 converts the refrigerant into a low-temperature, low-pressure gaseous refrigerant; it can be understood that the dehumidification effect is achieved when the cooling temperature of the dehumidification coil 9 is lower than the air dew point.

[0048] The condensation process in the first condenser 3 is an isobaric process, in which the refrigerant changes from a saturated gas with a certain degree of superheat to a saturated liquid with a certain degree of supercooling. At this time, the temperature is still considered high relative to the air temperature.

[0049] The electronic expansion valve is a key component in the integrated temperature and humidity control system, used to regulate the flow rate of refrigerant and reduce its pressure. Adjusting the valve narrows the passage of the electronic expansion valve. When the refrigerant flows through the valve, the sudden reduction in passage area increases the refrigerant velocity, leading to a pressure decrease. Some of the liquid refrigerant evaporates prematurely, forming bubbles, resulting in a gas-liquid mixture. This process is called throttling and pressure reduction. The second electronic expansion valve 15 precisely controls the flow rate of refrigerant into the evaporator 16. Because the pressure of the refrigerant flowing into the evaporator 16 decreases, the boiling point of the refrigerant also decreases. The refrigerant absorbs heat from its surroundings and evaporates in the evaporator 16, gradually changing from a gas-liquid mixture to a gaseous state. Therefore, the second electronic expansion valve 16 ensures that the refrigerant in the evaporator 16 can fully evaporate and absorb heat.

[0050] According to some embodiments of this utility model, when the system is in dehumidification-only mode, the second electronic expansion valve 15 and the first proportional valve 2 are completely closed. At this time, the high-temperature and high-pressure gaseous refrigerant starts from the compressor 1, passes through the second proportional valve 6, and releases heat in the second condenser 11. Then, it passes through the first electronic expansion valve 12 to reduce its pressure to a low-temperature and low-pressure gas-liquid mixture refrigerant. After absorbing heat in the dehumidification coil 9, it returns to the compressor 1 and is compressed into a high-temperature and high-pressure gaseous refrigerant, performing only a dehumidification cycle. Air enters from the return air inlet 17, is cooled and dehumidified by the dehumidification coil 9, and then dehumidifies by the dehumidification fan 10. After the second condenser 11 heats the dehumidified air, it exits from the air supply outlet 18.

[0051] According to some embodiments of this utility model, when the system is in cooling mode only, the second proportional valve 6 and the first electronic expansion valve 12 are completely closed. The compressor 1 compresses the refrigerant into a high-temperature and high-pressure gaseous refrigerant, which is then condensed into a high-temperature liquid refrigerant by the first condenser 3. After being throttled and depressurized by the second electronic expansion valve 15, it becomes a low-temperature and low-pressure gas-liquid mixture refrigerant. It absorbs heat in the evaporator to cool the air and performs a cooling cycle.

[0052] Specifically, during cooling only, the temperature detection device detects a rise in the temperature of the refrigerant and sends feedback to the control device. When the refrigerant temperature is higher than the set temperature, the control device starts the cooling process and the compressor 1 is loaded. When the refrigerant temperature is lower than the set value, the compressor 1 is unloaded and the control device stops.

[0053] According to some embodiments of this utility model, a first shut-off valve 14 is provided between the output end of the dehumidification coil 9 and the suction port of the compressor 1; a second shut-off valve 13 is provided between the input end of the first electronic expansion valve 12 and the input end of the first parallel group; a third shut-off valve 7 is provided between the output end of the second condenser 11 and the output end of the first condenser 3; a fourth shut-off valve 5 is provided between the second proportional valve 6 and the first proportional valve 2; the first shut-off valve 14, the second shut-off valve 13, the third shut-off valve 7 and the fourth shut-off valve 5 are used to disassemble and assemble the system, so that the system can be flexibly arranged in the electrical cabinet of the energy storage liquid cooling unit.

[0054] In the description of the above embodiments, "low temperature" and "high temperature" in "low temperature and low pressure" and "high temperature and high pressure" refer to air at normal temperature, while "low pressure" and "high pressure" refer to the refrigerant in the system when the system is not running.

[0055] Secondly, this embodiment proposes an energy storage liquid cooling unit electrical cabinet, including the split-type integrated temperature and humidity control system as described in the first aspect above.

[0056] According to this utility model, the split-type integrated temperature and humidity control system achieves efficient switching between dehumidification and cooling modes through the parallel combination of compressor 1, first condenser 3, and second condenser 11, and the coordinated control of first electronic expansion valve 12 and second electronic expansion valve 15, thus solving the problem of condensation in the electrochemical energy storage cabinet. By setting a second proportional valve 6 and a second condenser 11, the dehumidification coil 9 dehumidifies the air at the return air inlet 17, and then the second condenser 11 heats the air. In cooling-only mode, the circulation path between the first condenser 3 and evaporator 16, combined with monitoring feedback from temperature detection equipment, enables low-cost and environmentally friendly control of the cooling temperature. Furthermore, the shut-off valve assembly allows the core components of the split-type integrated temperature and humidity control system to be flexibly disassembled and maintained within the energy storage cabinet. The control system adjusts the opening of the first electronic expansion valve 12 and the second electronic expansion valve 15 according to actual needs, thereby precisely controlling the refrigerant flow, avoiding excessive or insufficient refrigerant, further improving system energy efficiency, reducing energy consumption, and minimizing the space occupied by the electrochemical energy storage cabinet.

[0057] In the description of this specification, references to terms such as "one embodiment," "further embodiment," "some specific embodiments," or "some examples," etc., indicate that a specific feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A split integrated temperature and humidity conditioning system, characterized by, The system comprises: a compressor; a first condenser, an input end of which is connected with a discharge port of the compressor; a dehumidification module, comprising an air duct shell and a dehumidification coil, the dehumidification coil being arranged in the air duct shell, the air duct shell being provided with an air return port and an air supply port, air entering from the air return port, passing through the dehumidification coil and then going out from the air supply port, an input end of the dehumidification coil being connected with an output end of the first condenser through a first electronic expansion valve, and an output end of the dehumidification coil being connected with a suction port of the compressor; an evaporator, an input end of which being connected with the output end of the first condenser through a second electronic expansion valve, and an output end of the evaporator being connected with the suction port of the compressor; a temperature detection device for detecting the temperature of the refrigerant in the system; a control device, being electrically connected with the dehumidification module, the evaporator, the compressor, the first condenser, the temperature detection device, the first electronic expansion valve and the second electronic expansion valve respectively; the dehumidification coil and the evaporator being connected in parallel to form a first parallel group, an input end of the first electronic expansion valve and an input end of the second electronic expansion valve being input ends of the first parallel group, and an output end of the first parallel group being connected with the suction port of the compressor.

2. The split integrated temperature and humidity conditioning system of claim 1, wherein, The dehumidification module further comprises a second condenser and a dehumidification fan, both of which are arranged in the air duct shell, and the control device is electrically connected with the second condenser and the dehumidification fan respectively; air enters from the air return port, passes through the dehumidification coil, the dehumidification fan and the second condenser in sequence and then goes out from the air supply port; the first condenser and the second condenser being connected in parallel to form a second parallel group, an output end of the first condenser and an output end of the second condenser being output ends of the second parallel group; an input end of the first parallel group being connected with an output end of the second parallel group, and an input end of the second parallel group being connected with the discharge port of the compressor.

3. The split integrated temperature and humidity control system of claim 2, wherein, The system further comprises a heat dissipation fan, which is located at one side of the first condenser and has a power greater than that of the dehumidification fan, and is used for dissipating heat of the whole system.

4. The split integrated temperature and humidity control system of claim 2, wherein, A first proportional valve is arranged between the compressor and the first condenser.

5. The split integrated temperature and humidity control system of claim 4, wherein, A second proportional valve is arranged between the compressor and the second condenser.

6. The split integrated temperature and humidity control system of claim 5, wherein, After the refrigerant compressed by the compressor is divided into two paths, the first path refrigerant passes through the first proportional valve and the first condenser in sequence, the second path refrigerant passes through the second proportional valve and the second condenser in sequence, the first path refrigerant and the second path refrigerant are combined into third path refrigerant and fourth path refrigerant after passing through the output end of the first condenser, the third path refrigerant passes through the first electronic expansion valve and the dehumidification coil and then returns to the suction port of the compressor, and the fourth path refrigerant passes through the second electronic expansion valve and the evaporator and then returns to the suction port of the compressor.

7. The split integrated temperature and humidity control system of claim 6, wherein, A first stop valve is arranged between the output end of the dehumidification coil and the suction port of the compressor; a second stop valve is arranged between the input end of the first electronic expansion valve and the input end of the first parallel group; a third stop valve is arranged between the output end of the second condenser and the output end of the first condenser; a fourth stop valve is arranged between the second proportional valve and the first proportional valve; the first stop valve, the second stop valve, the third stop valve and the fourth stop valve are used for disassembling and assembling the system.

8. An energy storage liquid chiller unit electrical cabinet, characterized in that, The split integrated temperature and humidity conditioning system comprises the split integrated temperature and humidity conditioning system according to any one of claims 1-7.

Images