Cooling device and liquid cooling frequency conversion cabinet

Abstract

The utility model discloses a cooling device and a liquid cooling frequency conversion cabinet. The liquid cooling frequency conversion cabinet is provided with a refrigerant inlet pipe, a refrigerant coil pipe and a refrigerant outlet pipe which are communicated with one another; a refrigerant flows to the refrigerant coil pipe from the refrigerant inlet pipe, takes away heat of the liquid cooling frequency conversion cabinet, and flows out from the refrigerant outlet pipe; the cooling device further comprises a frequency converter cooling passage and an in-cabinet cooling passage. The frequency converter cooling passage is used for cooling the frequency converter. And the in-cabinet cooling passage is used for cooling the interior of the liquid cooling frequency conversion cabinet. A refrigerant flows into the refrigerant coil pipe from the refrigerant inlet pipe, and the frequency converter cooling passage and the in-cabinet cooling passage are used for cooling the interiors of the frequency converter and the liquid-cooled frequency conversion cabinet respectively, so that the temperature of the liquid-cooled frequency conversion cabinet can be efficiently reduced, the situation that the internal frequency converter breaks down and influences operation of a unit can be avoided, and system stability can be guaranteed; the service life of equipment is prolonged; the operation efficiency is improved; and the reliability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration, and in particular to a cooling device and a liquid-cooled frequency converter cabinet. Background Technology

[0002] A variable-frequency drive (VFD) is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing the frequency of the power supply to the motor. VFDs are typically installed in a VFD cabinet.

[0003] Variable frequency drive (VFD) cabinets come in various forms, with floor-standing and air-mounted being the most common. Floor-standing cabinets are generally quite large and require a certain amount of space, while air-mounted VFD cabinets are compact, mounted directly on the machine, taking up less space, and have a relatively compact structure. They typically consist mainly of a VFD, a fan, and a heat exchanger, and can generally meet the needs of different application scenarios.

[0004] The operation of frequency converter cabinets requires control of the internal temperature, especially for air-cooled ones. In hot summer weather, the cooling fan may become clogged and fail to work, causing the frequency converter to overheat and resulting in relatively high maintenance costs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned defects of the existing air-cooled frequency converter cabinet in that the heat dissipation is difficult to meet the requirements in high-temperature weather, and to provide a cooling device and a liquid-cooled frequency converter cabinet.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A cooling device is provided for a liquid-cooled inverter cabinet, the liquid-cooled inverter cabinet having a refrigerant inlet pipe, a refrigerant coil, and a refrigerant outlet pipe connected in series; the refrigerant flows from the refrigerant inlet pipe to the refrigerant coil, carrying away the heat of the liquid-cooled inverter cabinet, and the refrigerant flows out from the refrigerant outlet pipe; the cooling device further includes an inverter cooling passage and an internal cabinet cooling passage, the inverter cooling passage being used to cool the inverter; the internal cabinet cooling passage being used to cool the interior of the liquid-cooled inverter cabinet.

[0008] In this solution, by adopting the above structure, the refrigerant flows into the refrigerant coil from the refrigerant inlet pipe, and the inside of the frequency converter and the liquid-cooled frequency converter cabinet are cooled by the frequency converter cooling path and the cabinet cooling path respectively. This can effectively reduce the temperature of the liquid-cooled frequency converter cabinet, avoid the failure of the internal frequency converter from affecting the operation of the unit, ensure system stability, extend equipment life, improve operating efficiency and improve equipment reliability.

[0009] Optionally, the liquid-cooled inverter cabinet is further provided with a heat exchanger corresponding to the refrigerant coil. The refrigerant flows from the refrigerant inlet pipe to the refrigerant coil and carries away the heat from the heat exchanger. The refrigerant flows out from the refrigerant outlet pipe.

[0010] Optionally, the liquid-cooled inverter cabinet is also equipped with a fan, which is located adjacent to the heat exchanger.

[0011] Optionally, the liquid-cooled inverter cabinet is also provided with a water receiving tray, which is correspondingly arranged with the heat exchanger.

[0012] Optionally, the refrigerant inlet pipe and the refrigerant outlet pipe are both located on the same side of the liquid-cooled inverter cabinet.

[0013] Optionally, the cooling device further includes a compressor and a condenser, wherein the refrigerant flows into the condenser after being compressed by the compressor.

[0014] Optionally, the cooling device further includes an electronic expansion valve and an evaporator. The refrigerant outlet pipe is connected to the electronic expansion valve. The refrigerant flows through the electronic expansion valve and then into the evaporator, and subsequently into the compressor.

[0015] Optionally, the cooling device further includes a filter and a solenoid valve, the condenser is connected to the filter, and the filter and the solenoid valve are sequentially connected to the refrigerant inlet pipe.

[0016] Optionally, the solenoid valve opens and closes simultaneously with the compressor.

[0017] A liquid-cooled inverter cabinet, wherein the liquid-cooled inverter cabinet uses a cooling device including the cooling device described above to regulate the temperature.

[0018] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0019] The positive and progressive effects of this utility model are as follows:

[0020] This invention utilizes the refrigerant inlet pipe to flow into the refrigerant coil, and employs the inverter cooling path and the cabinet cooling path to cool the inside of the inverter and the liquid-cooled inverter cabinet respectively. This effectively reduces the temperature of the liquid-cooled inverter cabinet, prevents internal inverter failures from affecting unit operation, ensures system stability, extends equipment life, improves operating efficiency, and enhances equipment reliability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the cooling device in an embodiment of the present invention.

[0022] Figure 2This is a schematic diagram of the liquid-cooled frequency converter cabinet in an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] Cooling device 100

[0025] Inverter cooling path 11

[0026] Cabinet cooling passage 12

[0027] Compressor 13

[0028] Condenser 14

[0029] Electronic expansion valve 15

[0030] Evaporator 16

[0031] Filter 17

[0032] Solenoid valve 18

[0033] Economy 19

[0034] 200 Liquid-cooled frequency converter cabinet

[0035] Refrigerant inlet pipe 21

[0036] Refrigerant outlet pipe 22

[0037] Heat exchanger 23

[0038] Fan 24

[0039] Water tray 25

[0040] Variable frequency drive 26 Detailed Implementation

[0041] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0042] like Figure 1 and Figure 2 As shown, this embodiment includes a cooling device 100 and a liquid-cooled inverter cabinet 200, wherein the liquid-cooled inverter cabinet 200 uses the cooling device 100 to regulate the temperature.

[0043] The liquid-cooled inverter cabinet 200 is equipped with a refrigerant inlet pipe 21, a refrigerant coil, and a refrigerant outlet pipe 22 connected to each other. The refrigerant flows from the refrigerant inlet pipe 21 to the refrigerant coil, carrying away heat from the liquid-cooled inverter cabinet 200, and then flows out from the refrigerant outlet pipe 22. The cooling device 100 also includes an inverter cooling passage 11 and an internal cooling passage 12. The inverter cooling passage 11 is used to cool the inverter 26; the internal cooling passage 12 is used to cool the interior of the liquid-cooled inverter cabinet 200. By allowing the refrigerant to flow from the refrigerant inlet pipe 21 into the refrigerant coil, and utilizing the inverter cooling passage 11 and the internal cooling passage 12 to cool the inverter 26 and the interior of the liquid-cooled inverter cabinet 200 respectively, the temperature of the liquid-cooled inverter cabinet 200 can be efficiently reduced. This prevents internal inverter 26 malfunctions from affecting unit operation, ensures system stability, extends equipment life, improves operating efficiency, and enhances equipment reliability.

[0044] Combination Figure 1 The liquid-cooled inverter cabinet 200 is also equipped with a heat exchanger 23 corresponding to the refrigerant coil. The refrigerant flows from the refrigerant inlet pipe 21 to the refrigerant coil and carries away the heat of the heat exchanger 23. The refrigerant flows out from the refrigerant outlet pipe 22.

[0045] exist Figure 1 The liquid-cooled inverter cabinet 200 is also equipped with a fan 24, which is located adjacent to the heat exchanger 23. The liquid-cooled inverter cabinet 200 is also equipped with a water receiving tray 25, which is correspondingly arranged with the heat exchanger 23.

[0046] The cooling device 100 also includes a compressor 13 and a condenser 14, with the refrigerant flowing into the condenser 14 after being compressed by the compressor 13.

[0047] The cooling device 100 also includes an electronic expansion valve 15 and an evaporator 16. The refrigerant outlet pipe 22 is connected to the electronic expansion valve 15. The refrigerant flows through the electronic expansion valve 15 and then into the evaporator 16, and then into the compressor 13.

[0048] The cooling device 100 also includes a filter 17 and a solenoid valve 18. The condenser 14 is connected to the filter 17, and the filter 17 and the solenoid valve are sequentially connected to the refrigerant inlet pipe 21.

[0049] As one implementation method, combined with Figure 2 The refrigerant inlet pipe 21 and the refrigerant outlet pipe 22 are both located on the same side of the liquid-cooled inverter cabinet 200.

[0050] The cooling device 100 in this embodiment provides a refrigerant cooling method for the centrifuge's onboard liquid-cooled inverter cabinet 200. This cooling method not only has a high-efficiency cooling effect, ensuring the operation of the unit, but also has good stability. With the widespread use of compressors 13 and the continuous development of refrigeration technology, the requirements for the stability of machine operation are increasing, and the heat dissipation problem of the machine during operation also urgently needs to be solved.

[0051] The cooling device 100 can efficiently reduce the temperature inside the liquid-cooled inverter cabinet 200 and the inverter 26. It can precisely control the temperature of each component inside the liquid-cooled inverter cabinet 200 through the expansion valve and the solenoid valve 18, so as to avoid the internal inverter 26 from failing and affecting the operation of the unit, ensure system stability, extend equipment life, improve operating efficiency and improve equipment reliability.

[0052] The liquid-cooled inverter cabinet 200 adopts a modular design, which facilitates installation, maintenance and replacement. The optimized flow channel design ensures the high efficiency of refrigerant circulation inside the liquid-cooled inverter cabinet 200. The liquid-cooled inverter cabinet 200 is equipped with connection interfaces on the outside, which facilitates connection with the refrigerant circulation system of the unit.

[0053] The liquid-cooled inverter cabinet 200 is equipped with a solenoid valve 18 at the refrigerant outlet pipe 22 to reduce the risk of condensation. To meet the cooling and stability requirements of the liquid-cooled inverter cabinet 200, the product is manufactured in accordance with safety standards, meets certain protection levels, and undergoes strict quality control to ensure stable and reliable performance.

[0054] The liquid-cooled inverter cabinet 200 uses refrigerant cooling. The refrigerant of the host needs to be connected to the liquid-cooled inverter cabinet 200 according to the requirements in the figure, and precise control is achieved using the compliant solenoid valve 18 and electronic expansion valve 15 or electric ball valve.

[0055] The liquid-cooled inverter cabinet 200 mainly includes an inverter 26, a heat exchanger 23, a fan 24, a refrigerant coil, a water receiving tray 25, etc. It can maintain a stable cooling capacity. Through the control of various valves, it can efficiently and accurately control the required temperature inside the cabinet. Its stable working performance and good heat dissipation effect extend the service life of the inverter 26.

[0056] The liquid-cooled inverter cabinet 200 adopts a modular design with a compact structure and distinct heat dissipation areas. It mainly has two cooling paths: internal cooling of the inverter cabinet and cooling of the inverter. The liquid-cooled inverter cabinet 200 is equipped with external connection interfaces to facilitate the installation, disassembly and replacement of pipelines.

[0057] The liquid-cooled inverter cabinet 200 features an optimized piping flow design, ensuring smooth refrigerant circulation and reducing pressure drop and resistance losses. The refrigerant inlet pipe 21 of the liquid-cooled inverter cabinet 200 connects to the outlet of the condenser 14 via a filter 17 and a solenoid valve 18. The refrigerant outlet pipe 22 of the liquid-cooled inverter cabinet 200 connects to the electronic expansion valve 15, which in turn connects to the inlet of the evaporator 16.

[0058] The liquid-cooled inverter cabinet 200 is also equipped with mounting brackets and positioning holes on the outside, which facilitates connection and fixation with centrifuge units and other related equipment.

[0059] Cooling device 100 can be widely used in various refrigeration systems, freezing equipment and related industrial frequency converter cabinets, and is especially suitable for frequency converter cabinet cooling of centrifuge units.

[0060] The interface design of the liquid-cooled inverter cabinet 200 is flexible and diverse, and can be customized according to the interface requirements of different equipment to meet the needs of different customers for cooling pipelines.

[0061] The cooling device 100 precisely controls the temperature of the liquid-cooled inverter cabinet 200 through the electronic expansion valve 15. The electronic expansion valve 15 adjusts the temperature according to the IGBT (Insulated Gate Bipolar Transistor) temperature of the inverter 26, and the target temperature can be set according to the parameters given by different inverter manufacturers. The electronic expansion valve 15 also adjusts the temperature inside the inverter 26 cabinet, and the target temperature is set according to the ambient temperature of the usage environment to ensure that condensation does not occur during normal use. The solenoid valve 18 opens and closes simultaneously with the compressor 13 to prevent refrigerant from flowing during shutdown, which could lead to excessively low temperatures and condensation in the liquid-cooled inverter cabinet 200.

[0062] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A cooling device for a liquid-cooled frequency converter cabinet, characterized in that, The liquid-cooled inverter cabinet is equipped with a refrigerant inlet pipe, a refrigerant coil, and a refrigerant outlet pipe that are connected to each other. The refrigerant flows from the refrigerant inlet pipe to the refrigerant coil and carries away the heat of the liquid-cooled inverter cabinet. The refrigerant flows out from the refrigerant outlet pipe. The cooling device also includes an inverter cooling passage and an internal cooling passage. The inverter cooling passage is used to cool the inverter. The internal cooling passage is used to cool the interior of the liquid-cooled inverter cabinet.

2. The cooling device as described in claim 1, characterized in that, The liquid-cooled inverter cabinet is also equipped with a heat exchanger corresponding to the refrigerant coil. The refrigerant flows from the refrigerant inlet pipe to the refrigerant coil and carries away the heat from the heat exchanger. The refrigerant flows out from the refrigerant outlet pipe.

3. The cooling device as described in claim 2, characterized in that, The liquid-cooled inverter cabinet is also equipped with a fan, which is located adjacent to the heat exchanger.

4. The cooling device as described in claim 2, characterized in that, The liquid-cooled inverter cabinet is also equipped with a water receiving tray, which is correspondingly set with the heat exchanger.

5. The cooling device as described in claim 1, characterized in that, The refrigerant inlet pipe and the refrigerant outlet pipe are both located on the same side of the liquid-cooled inverter cabinet.

6. The cooling device as described in claim 1, characterized in that, The cooling device also includes a compressor and a condenser, with the refrigerant flowing into the condenser after being compressed by the compressor.

7. The cooling device as described in claim 6, characterized in that, The cooling device also includes an electronic expansion valve and an evaporator. The refrigerant outlet pipe is connected to the electronic expansion valve. The refrigerant flows through the electronic expansion valve and then into the evaporator, and subsequently into the compressor.

8. The cooling device as described in claim 6, characterized in that, The cooling device also includes a filter and a solenoid valve. The condenser is connected to the filter, and the filter and the solenoid valve are sequentially connected to the refrigerant inlet pipe.

9. The cooling device as described in claim 8, characterized in that, The solenoid valve opens and closes simultaneously with the compressor.

10. A liquid-cooled frequency converter cabinet, characterized in that, The liquid-cooled inverter cabinet uses a cooling device as described in any one of claims 1-9 to regulate the temperature.

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