Cabinet air conditioner, cabinet air conditioner heat dissipation system and control method

Abstract

The present disclosure relates to a cabinet air conditioner, a cabinet air conditioner heat dissipation system and a control method. The cabinet air conditioner heat dissipation system comprises: a compressor, a condenser group, a throttling device and an evaporator group connected in sequence to form a refrigerant circuit, and the exhaust port and the suction port of the compressor are respectively communicated with the refrigerant inlet of the condenser group and the refrigerant outlet of the evaporator group; the cabinet air conditioner heat dissipation system further comprises: a gas-liquid separator, the inlet of the gas-liquid separator is communicated with the condenser group, and the gas-liquid separator is configured to perform gas-liquid separation on the gas-liquid mixed refrigerant from the condenser group; a vortex tube, the inlet of the vortex tube is communicated with the gas outlet of the gas-liquid separator, and the vortex tube is configured to perform vortex separation on the gaseous refrigerant separated by the gas-liquid separator; and an electric box radiator, which is arranged in the electric box of the cabinet air conditioner, and the inlet of the electric box radiator is communicated with the cold gas outlet of the vortex tube, so that the refrigerant vortex separated by the vortex tube is used to dissipate heat for the electric box.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning technology, and in particular to a cabinet air conditioner, a cabinet air conditioner heat dissipation system and control method. Background Technology

[0002] Vehicle-mounted electronic cabinet air conditioners (hereinafter referred to as cabinet air conditioners) are used to dissipate heat from vehicle-mounted electronic cabinets. With the rapid development of the electronics industry, the power density of electronic cabinets is getting higher and higher, and the demand for heat dissipation is getting greater and greater.

[0003] Because the rack-mounted air conditioner is located in a vehicle environment, the space is relatively small and the temperature is high. At the same time, the electromagnetic environment inside the electronic rack is complex, and the electrical box of the rack-mounted air conditioner needs to be electromagnetically shielded. However, this will reduce the heat dissipation efficiency of the electrical box and affect the reliability of the rack-mounted air conditioner. Summary of the Invention

[0004] In view of this, the present disclosure provides a cabinet air conditioner, a cabinet air conditioner heat dissipation system and a control method, which can effectively dissipate heat from the electrical box of the cabinet air conditioner.

[0005] In one aspect of this disclosure, a rack-mounted air conditioning cooling system is provided, comprising: a compressor, a condenser assembly, a throttling device, and an evaporator assembly connected in sequence to form a refrigerant circuit, wherein the exhaust port and suction port of the compressor are respectively connected to the refrigerant inlet of the condenser assembly and the refrigerant outlet of the evaporator assembly; the rack-mounted air conditioning cooling system further comprises:

[0006] A gas-liquid separator, the inlet of which is connected to the condenser group, is configured to perform gas-liquid separation on the gas-liquid mixed refrigerant from the condenser group;

[0007] A vortex tube, the inlet of which is connected to the outlet of the gas-liquid separator, is configured to perform vortex separation on the gaseous refrigerant separated by the gas-liquid separator; and

[0008] An electrical box heat sink is installed in the electrical box of the air conditioner cabinet. The inlet of the electrical box heat sink is connected to the cold air outlet of the vortex tube, so as to dissipate heat from the electrical box through the refrigerant separated by the vortex tube.

[0009] In some embodiments, the condenser group includes a first condenser and a second condenser connected in series, the inlet of the first condenser is connected to the exhaust port of the compressor, the outlet of the first condenser is connected to the inlet of the second condenser, the inlet of the gas-liquid separator is connected to the outlet of the first condenser, and the hot gas outlet of the vortex tube is connected to the inlet of the second condenser.

[0010] In some embodiments, the rack air conditioning cooling system further includes:

[0011] A first one-way valve is disposed in the refrigerant flow path between the hot gas outlet of the vortex tube and the inlet of the second condenser, and is configured to allow one-way flow from the hot gas outlet of the vortex tube to the inlet of the second condenser.

[0012] In some embodiments, the outlet of the second condenser is connected to the throttling device, and the liquid outlet of the gas-liquid separator is connected to the outlet of the second condenser.

[0013] In some embodiments, the rack air conditioning cooling system further includes:

[0014] The second one-way valve is located in the refrigerant flow path between the liquid outlet of the gas-liquid separator and the outlet of the second condenser, and is configured to allow one-way flow from the liquid outlet of the gas-liquid separator to the outlet of the second condenser.

[0015] In some embodiments, the evaporator group includes a first evaporator and a second evaporator connected in series, the outlet of the first evaporator is connected to the inlet of the second evaporator, the outlet of the second evaporator is connected to the suction port of the compressor, and the outlet of the electrical box radiator is connected to the outlet of the first evaporator.

[0016] In some embodiments, the rack air conditioning cooling system further includes:

[0017] A third one-way valve is disposed in the refrigerant flow path between the outlet of the electrical box radiator and the outlet of the first evaporator, and is configured to allow one-way flow from the outlet of the electrical box radiator to the outlet of the first evaporator.

[0018] In some embodiments, the rack air conditioning cooling system further includes:

[0019] A switching valve is installed in the refrigerant flow path between the inlet of the gas-liquid separator and the condenser assembly;

[0020] A first temperature sensor, located inside the electrical box, is configured to detect the temperature inside the electrical box; and

[0021] The controller, connected to the switching valve and the first temperature sensor, is configured to issue an on / off command to the switching valve based on the temperature inside the electrical box, so as to turn the switching valve on or off.

[0022] In some embodiments, the rack air conditioning cooling system further includes:

[0023] A first temperature sensor, located inside the electrical box, is configured to detect the temperature inside the electrical box; and

[0024] A second temperature sensor, located on the heat sink of the electrical box, is configured to detect the temperature of the heat sink of the electrical box.

[0025] A proportional valve is installed in the refrigerant flow path between the cold air outlet of the vortex tube and the inlet of the radiator of the electrical box;

[0026] The controller, connected to the proportional valve, the first temperature sensor, and the second temperature sensor, is configured to issue a flow regulation command to the proportional valve based on the temperature difference between the temperature inside the electrical box and the temperature of the electrical box radiator, so as to adjust the refrigerant flow rate from the cold air outlet of the vortex tube to the inlet of the electrical box radiator.

[0027] In one aspect of this disclosure, a rack-mounted air conditioner is provided, comprising:

[0028] Electrical box; and

[0029] The aforementioned cabinet air conditioning cooling system.

[0030] In one aspect of this disclosure, a control method for the aforementioned cabinet air conditioning heat dissipation system is provided, comprising:

[0031] The temperature inside the electrical box of the receiver cabinet air conditioner;

[0032] If the temperature inside the electrical box is greater than a preset temperature threshold, the switching valve is activated so that the gas-liquid separator can separate the gas-liquid mixture from the condenser group. The gaseous refrigerant separated by the gas-liquid separator is then separated by a vortex tube, and the refrigerant separated by the vortex tube is used to dissipate heat from the electrical box.

[0033] In one aspect of this disclosure, a control method for the aforementioned cabinet air conditioning heat dissipation system is provided, comprising:

[0034] Receive the temperature inside the electrical box and the temperature of the electrical box's radiator;

[0035] Calculate the difference between the temperature inside the electrical box and the temperature of the radiator of the electrical box;

[0036] Based on the temperature difference between the electrical box and the electrical box radiator, the proportional valve adjusts the refrigerant flow rate from the cold air outlet of the vortex tube to the inlet of the electrical box radiator.

[0037] In some embodiments, the step of adjusting the refrigerant flow rate from the cold air outlet of the vortex tube to the inlet of the electrical box radiator based on the temperature difference between the temperature inside the electrical box and the temperature of the electrical box radiator includes:

[0038] Compare the difference with the dew point temperature difference;

[0039] If the difference exceeds the dew point temperature difference, the proportional valve reduces the refrigerant flow rate from the cold air outlet of the vortex tube to the inlet of the electrical box radiator.

[0040] In some embodiments, the step of adjusting the refrigerant flow rate from the cold air outlet of the vortex tube to the inlet of the electrical box radiator based on the temperature difference between the temperature inside the electrical box and the temperature of the electrical box radiator includes:

[0041] Compare the difference with the dew point temperature difference;

[0042] If the difference is lower than the dew point temperature difference, the proportional valve is adjusted to increase the refrigerant flow rate from the cold air outlet of the vortex tube to the inlet of the electrical box radiator.

[0043] Therefore, according to the embodiments of this disclosure, high-pressure gaseous refrigerant is obtained from the refrigerant circuit of the cabinet air conditioner through a gas-liquid separator and input into the vortex tube. The low-temperature gaseous refrigerant separated by the vortex tube is then input into the heat sink of the electrical box, achieving effective heat dissipation for the electrical box. This allows the components inside the electrical box to operate at a suitable ambient temperature, thereby reducing lifespan damage to the components under high-temperature operating conditions, extending the service life of the components, and ultimately improving the service life of the cabinet air conditioner. Furthermore, since the high-pressure gaseous refrigerant introduced into the vortex tube comes from the refrigerant circuit of the cabinet air conditioner, an additional air compression device can be eliminated. While the cabinet air conditioner's refrigerant circulation achieves cooling for the vehicle-mounted electronic cabinet, it also meets the heat dissipation requirements of the electrical box, saving space occupied by the cabinet air conditioner's heat dissipation system. Attached Figure Description

[0044] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0045] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0046] Figure 1 These are schematic diagrams of some embodiments of the cabinet air conditioning heat dissipation system disclosed herein;

[0047] Figure 2 This is a signal connection diagram based on some embodiments of the cabinet air conditioning cooling system disclosed herein;

[0048] Figure 3 This is a flowchart illustrating some embodiments of the control method for the cabinet air conditioning heat dissipation system according to the present disclosure;

[0049] Figure 4This is a flowchart illustrating some other embodiments of the control method for the cabinet air conditioning heat dissipation system according to the present disclosure.

[0050] It should be understood that the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Furthermore, the same or similar reference numerals denote the same or similar components. Detailed Implementation

[0051] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0052] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0053] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0054] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0055] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0056] Figure 1 This is a structural schematic diagram of some embodiments of the rack air conditioning cooling system disclosed herein. The rack air conditioning cooling system includes: a refrigerant circuit formed by sequential connections (see reference). Figure 1 The compressor 1, condenser group 2, throttling device 3 and evaporator group 4 (shown by the bold lines in the middle) are connected to the refrigerant inlet of the condenser group 2 and the refrigerant outlet of the evaporator group 4, respectively. Figure 1 An example of a refrigerant circuit and the various components forming the refrigerant circuit is shown, but it is not limited to... Figure 1 The diagram shows the refrigerant circuit configuration and the components that form the refrigerant circuit.

[0057] The cabinet air conditioning cooling system also includes a gas-liquid separator 5, a vortex tube 6, and an electrical box radiator 7. The inlet 5a of the gas-liquid separator 5 is connected to the condenser assembly 2 and is configured to separate the gas-liquid mixture of refrigerant from the condenser assembly 2. The gas-liquid separator 5 can separate the gas-liquid mixture of refrigerant input from the inlet 5a into gaseous and liquid refrigerant, and output the gaseous refrigerant through the outlet 5b and the liquid refrigerant through the outlet 5c.

[0058] The inlet 6a of the vortex tube 6 is connected to the outlet 5b of the gas-liquid separator 5, and is configured to perform vortex separation on the gaseous refrigerant separated by the gas-liquid separator 5. The vortex tube 6 has a vortex chamber. When high-pressure gaseous refrigerant is injected into the vortex chamber, the high-pressure gaseous refrigerant flows at high speed towards the hot gas end outlet of the vortex tube. A portion of the gas flows out from the hot gas end, while the remaining gas, after being blocked, rotates in the opposite direction at the same speed within the inner ring of the original gas flow and flows towards the cold gas end of the vortex tube. During this process, the two gas flows exchange heat; the inner ring gas becomes very cold and flows out from the cold gas end of the vortex tube, while the outer ring gas becomes very hot and flows out from the hot gas end of the vortex tube. In this way, the vortex tube can efficiently generate low-temperature gas.

[0059] An electrical box heat sink 7 is installed in the electrical box 8 of the rack air conditioner. The inlet 7a of the electrical box heat sink 7 is connected to the cold air outlet 6b of the vortex tube 6, so that the refrigerant separated by the vortex tube 6 can dissipate heat from the electrical box 8. The electrical box 8 contains the components in the rack air conditioner that realize control functions, etc., and operates normally at a suitable temperature.

[0060] In this embodiment, high-pressure gaseous refrigerant is obtained from the refrigerant circuit of the cabinet air conditioner through the gas-liquid separator 5 and input into the vortex tube 6. The low-temperature gaseous refrigerant separated by the vortex tube 6 is then input into the heat sink 7 of the electrical box to achieve effective heat dissipation for the components inside the electrical box 8. This allows the components inside the electrical box of the cabinet air conditioner to operate at a suitable ambient temperature, thereby reducing the lifespan damage of the components inside the electrical box 8 under high-temperature operating conditions, extending the service life of the components inside the electrical box 8, and thus improving the service life of the cabinet air conditioner.

[0061] Furthermore, since the high-pressure gaseous refrigerant introduced into the vortex tube 6 comes from the refrigerant circuit of the cabinet air conditioner, there is no need to install an additional air compression device. While the cabinet air conditioner refrigerant circulation achieves the cooling effect of the vehicle-mounted electronic cabinet, it also meets the heat dissipation requirements of the electrical box 8, saving space occupied by the cabinet air conditioner heat dissipation system.

[0062] refer to Figure 1 In some embodiments, the condenser group 2 includes a first condenser 21 and a second condenser 22 connected in series. The inlet 21a of the first condenser 21 is connected to the exhaust port 1a of the compressor 1, the outlet 21b of the first condenser 21 is connected to the inlet 22a of the second condenser 22, the inlet 5a of the gas-liquid separator 5 is connected to the outlet 21b of the first condenser 21, and the hot gas outlet 6c of the vortex tube 6 is connected to the inlet 22a of the second condenser 22.

[0063] In this embodiment, the hot gas outlet 6c of the vortex tube 6 is connected to the inlet 22a of the second condenser 22, so that the gaseous refrigerant discharged from the hot gas outlet 6c of the vortex tube 6 re-enters the refrigerant circuit, thereby ensuring a stable refrigerant circulation within the refrigerant circuit. Furthermore, the refrigerant discharged from the outlet 21b of the first condenser 21 is combined with the refrigerant discharged from the second condenser 22 for secondary cooling, thereby preventing refrigerants of different temperatures from different circuits from adversely affecting the throttling effect when entering the throttling device 3.

[0064] exist Figure 1 In the cabinet air conditioning cooling system, a first one-way valve 91 may also be included. The first one-way valve 91 is disposed in the refrigerant flow path between the hot gas outlet 6c of the vortex tube 6 and the inlet 22a of the second condenser 22, and is configured to allow one-way flow from the hot gas outlet 6c of the vortex tube 6 to the inlet 22a of the second condenser 22.

[0065] By installing a first check valve 91 in the refrigerant flow path between the hot gas outlet 6c of the vortex tube 6 and the inlet 22a of the second condenser 22, the high-pressure refrigerant in the refrigerant circuit is prevented from flowing back to the hot gas outlet 6c of the vortex tube 6 and affecting the normal operation of the vortex tube 6.

[0066] refer to Figure 1In some embodiments, the outlet 22b of the second condenser 22 is connected to the throttling device 3, and the liquid outlet 5c of the gas-liquid separator 5 is connected to the outlet 22b of the second condenser 22.

[0067] The outlet 5c of the gas-liquid separator 5 is connected to the outlet 22b of the second condenser 22 so that the liquid refrigerant separated by the gas-liquid separator 5 can re-enter the refrigerant circuit for circulation. This not only keeps the high-pressure refrigerant entering the vortex tube 6 in a gaseous state, but also ensures a stable refrigerant circulation in the refrigerant circuit by replenishing the refrigerant circuit with the separated liquid refrigerant.

[0068] exist Figure 1 In this configuration, the cabinet air conditioning cooling system may further include a second one-way valve 92. The second one-way valve 92 is disposed in the refrigerant flow path between the liquid outlet 5c of the gas-liquid separator 5 and the outlet 22b of the second condenser 22, and is configured to allow one-way flow from the liquid outlet 5c of the gas-liquid separator 5 to the outlet 22b of the second condenser 22.

[0069] By installing a second one-way valve 92 in the refrigerant flow path between the liquid outlet 5c of the gas-liquid separator 5 and the outlet 22b of the second condenser 22, the liquid refrigerant in the refrigerant circuit is prevented from flowing back to the liquid outlet 5c of the gas-liquid separator 5 and affecting the normal operation of the gas-liquid separator.

[0070] refer to Figure 1 In some embodiments, the evaporator group 4 includes a first evaporator 41 and a second evaporator 42 connected in series. The outlet 41b of the first evaporator 41 is connected to the inlet 42a of the second evaporator 42, the outlet 42b of the second evaporator 42 is connected to the suction port 1b of the compressor 1, and the outlet 7b of the electrical box radiator 7 is connected to the outlet 41b of the first evaporator 41.

[0071] In this embodiment, the outlet 7b of the electrical box radiator 7 is connected to the outlet 41b of the first evaporator 41 so that the refrigerant discharged from the outlet 7b of the electrical box radiator 7 re-enters the refrigerant circuit, thereby ensuring a stable refrigerant circulation within the refrigerant circuit; and after merging with the refrigerant discharged from the outlet 41b of the first evaporator 41, it undergoes secondary evaporation through the second evaporator 42, thereby preventing refrigerants of different temperatures output from different circuits from adversely affecting the function of the compressor 1 when entering the compressor 1.

[0072] exist Figure 1 The cabinet air conditioning cooling system further includes a third one-way valve 93. The third one-way valve 93 is disposed in the refrigerant flow path between the outlet 7b of the electrical box radiator 7 and the outlet 41b of the first evaporator 41, and is configured to allow one-way flow from the outlet 7b of the electrical box radiator 7 to the outlet 41b of the first evaporator 41.

[0073] By installing a third one-way valve 93 in the refrigerant flow path between the outlet 7b of the electrical box radiator 7 and the outlet 41b of the first evaporator 41, the liquid refrigerant in the refrigerant circuit is prevented from flowing back to the outlet 7b of the electrical box radiator 7 and affecting the normal operation of the electrical box radiator 7.

[0074] Figure 2 This is a schematic diagram of signal connections based on some embodiments of the cabinet air conditioning cooling system disclosed herein. (See reference) Figure 1 and Figure 2 In some embodiments, the cabinet air conditioning cooling system further includes a switching valve 94, a first temperature sensor 97, and a controller 96. The switching valve 94 is disposed in the refrigerant flow path between the inlet 5a of the gas-liquid separator 5 and the condenser assembly 2. The switching valve 94 may include a solenoid valve, or it may include an electric valve, a hydraulically controlled valve, etc.

[0075] The first temperature sensor 97 is located inside the electrical box 8 and is configured to detect the temperature inside the electrical box 8. The controller 96 is signal-connected to the switching valve 94 and the first temperature sensor 97, and is configured to issue an on / off command to the switching valve 94 based on the temperature inside the electrical box 8, so that the switching valve 94 is turned on or off.

[0076] A switching valve 94 is installed in the refrigerant flow path between the inlet 5a of the gas-liquid separator 5 and the condenser group 2. The controller 96 determines whether to open or close the switching valve 94 based on the temperature inside the electrical box 8 sensed by the first temperature sensor 97 inside the electrical box 8. When the temperature inside the electrical box 8 is not high and does not affect the normal operation of the components inside the electrical box 8, the switching valve 94 can be closed to ensure the continuous and stable operation of the refrigerant circulation of the cabinet air conditioner.

[0077] When the temperature inside the electrical box 8 is too high and affects the normal operation of the components inside the electrical box 8, the switching valve 94 can be turned on. The refrigerant in the condenser enters the vortex tube 6 through the gas-liquid separator 5. The vortex tube 6 then inputs the separated cooler airflow into the electrical box radiator 7 to dissipate heat inside the electrical box 8, reduce the temperature inside the electrical box 8, and ensure the normal operation of the components inside the electrical box 8.

[0078] refer to Figure 1 and Figure 2 In some embodiments, the cabinet air conditioning cooling system further includes: a first temperature sensor 97, a second temperature sensor 98, a proportional valve 95, and a controller 96. The first temperature sensor 97 is located inside the electrical box 8 and is configured to detect the temperature T inside the electrical box 8. 内 The second temperature sensor 98 is located on the heat sink 7 of the electrical box and is configured to detect the temperature T of the heat sink 7 of the electrical box. 散The proportional valve 95 is installed in the refrigerant flow path between the cold air outlet 6b of the vortex tube 6 and the inlet 7a of the electrical box radiator 7.

[0079] Controller 96 is signal-connected to the proportional valve 95, the first temperature sensor 97, and the second temperature sensor 98, and is configured to adjust the temperature T inside the electrical box 8 according to the temperature T. 内 and the temperature T of the radiator 7 of the electrical box 散 The difference ΔT is sent to the proportional valve 95 to adjust the refrigerant flow rate from the cold air outlet 6b of the vortex tube 6 to the inlet 7a of the electrical box radiator 7.

[0080] A first temperature sensor 97 is installed inside the electrical box 8, and a second temperature sensor 98 is installed on the electrical box radiator 7. A refrigerant flow path is established between the cold air outlet 6b of the vortex tube 6 and the inlet 7a of the electrical box radiator 7. This allows the controller 96 to send a flow regulation command to the proportional valve 95 based on the temperature difference between the electrical box 8 and the electrical box radiator 7. This adjusts the refrigerant flow rate from the cold air outlet 6b of the vortex tube 6 into the inlet 7a of the electrical box radiator 7, thereby ensuring the heat dissipation needs of the electrical box 8 while preventing condensation during heat dissipation that could affect electrical safety.

[0081] The various embodiments of the rack air conditioning cooling system disclosed herein can be applied to the cooling function of the electrical box of a rack air conditioner. Therefore, the embodiments of this disclosure also provide a rack air conditioner, including: an electrical box 8 and the rack air conditioning cooling system of any of the foregoing embodiments.

[0082] Figure 3 This is a flowchart illustrating some embodiments of the control method for the cabinet air conditioning cooling system according to this disclosure. (See reference) Figures 1-3 This disclosure also provides a control method for the aforementioned cabinet air conditioning cooling system. The control method includes steps S11 to S13. Steps S11 to S13 can be executed by the controller 96.

[0083] In step S11, the temperature T inside the electrical box 8 of the receiver cabinet air conditioner is... 内 .

[0084] In step S12, the temperature T inside the electrical box 8 is determined. 内 If the temperature exceeds a preset temperature threshold Tth, proceed to step S13; otherwise, return to step S11.

[0085] In step S13, the switching valve 94 is turned on so that the gas-liquid separator 5 can separate the gas-liquid mixture refrigerant from the condenser group 2, and the gaseous refrigerant separated by the gas-liquid separator 5 is separated by the vortex tube 6. The refrigerant separated by the vortex tube 6 is then used to dissipate heat from the electrical box 8.

[0086] The switching valve 94 is turned on or off based on the temperature inside the electrical box 8 sensed by the first temperature sensor 97 inside the electrical box 8. When the temperature inside the electrical box 8 is not high and does not affect the normal operation of the components inside the electrical box 8, the switching valve 94 can be turned off to ensure the continuous and stable operation of the refrigerant circulation of the cabinet air conditioner. When the temperature inside the electrical box 8 is high and affects the normal operation of the components inside the electrical box 8, the switching valve 94 can be turned on. The refrigerant in the condenser enters the vortex tube 6 through the gas-liquid separator 5. The vortex tube 6 then inputs the separated cooler airflow into the electrical box radiator 7 to achieve heat dissipation inside the electrical box 8, reduce the temperature inside the electrical box 8, and ensure the normal operation of the components inside the electrical box 8.

[0087] Figure 4 This is a flowchart illustrating some other embodiments of the control method for the cabinet air conditioning cooling system according to the present disclosure. (See reference) Figures 1-4 This disclosure also provides a control method for the aforementioned cabinet air conditioning cooling system. The control method includes steps S21 to S24. Steps S21 to S24 can be executed by the controller 96.

[0088] In step S21, the temperature T inside the receiving electrical box 8 is measured. 内 Temperature T of the radiator 7 of the electrical box 散 .

[0089] In step S22, the temperature T inside the electrical box 8 is calculated. 内 and the temperature T of the radiator 7 of the electrical box 散 The difference ΔT.

[0090] In step S23, based on the temperature T inside the electrical box 8 内 and the temperature T of the radiator 7 of the electrical box 散 The difference ΔT causes the proportional valve 95 to adjust the refrigerant flow rate from the cold air outlet 6b of the vortex tube 6 into the inlet 7a of the electrical box radiator 7.

[0091] Based on the temperature difference between the electrical box 8 and the electrical box radiator 7, a flow regulation command is sent to the proportional valve 95 to adjust the refrigerant flow rate from the cold air outlet 6b of the vortex tube 6 into the inlet 7a of the electrical box radiator 7, so as to meet the heat dissipation needs of the electrical box 8 and reduce electrical safety risks.

[0092] refer to Figure 4 In some embodiments, step S23 includes: comparing the difference ΔT with the dew point temperature difference ΔT 露点 If the difference ΔT exceeds the dew point temperature difference ΔT 露点 Then proceed to step S24, if the difference ΔT is lower than the dew point temperature difference ΔT 露点 Then proceed to step S25.

[0093] In step S24, the proportional valve 95 is adjusted to reduce the refrigerant flow rate from the cold air outlet 6b of the vortex tube 6 into the inlet 7a of the electrical box radiator 7. This way, when the temperature difference between the electrical box 8 and the electrical box radiator 7 exceeds the dew point temperature difference, the proportional valve 95 reduces the refrigerant flow rate from the cold air outlet 6b of the vortex tube 6 into the inlet 7a of the electrical box radiator 7, thereby avoiding the risk of condensation in the electrical box 8 during heat dissipation, which could affect electrical safety.

[0094] In step S25, the proportional valve 95 is adjusted to increase the refrigerant flow rate from the cold air outlet 6b of the vortex tube 6 into the inlet 7a of the electrical box radiator 7. This ensures that when the temperature difference between the electrical box 8 and the electrical box radiator 7 is lower than the dew point temperature difference, the proportional valve 95 increases the refrigerant flow rate from the cold air outlet 6b of the vortex tube 6 into the inlet 7a of the electrical box radiator 7, thus guaranteeing the heat dissipation needs of the electrical box 8 and improving heat dissipation efficiency.

[0095] Referring to the embodiments of the rack air conditioning cooling system and its control method disclosed above, since electronic racks are cooled and dissipated year-round by rack air conditioning, adding an independent cooling and heat dissipation system on top of the rack air conditioning would increase space occupation and reduce space utilization. The rack air conditioning cooling system embodiment of this disclosure utilizes a separate refrigerant input from the existing vehicle-mounted rack air conditioning cooling system to a vortex tube. The characteristics of the vortex tube provide a cooling medium for the electrical box heat sink, ensuring effective heat dissipation of the electrical box, reducing the temperature stress coefficient, and improving the lifespan of components inside the electrical box. Since the air conditioning system and the cooling system share the same refrigerant, no additional cooling system is needed, fully utilizing the existing rack air conditioning space and thus making full use of the limited vehicle space, improving space utilization.

[0096] Taking the MOS microprocessor in Table 5.2.2-10 of GJB / Z299C reliability prediction as an example, when the cabinet air conditioning cooling system of this disclosure is used to dissipate heat from the electrical box, the internal temperature of the electrical box drops from 65 degrees to 61 degrees, and the temperature stress coefficient π T Reducing the value from 1.26 to 1.0 increases the expected device lifetime by 26%.

[0097] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0098] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A cabinet air conditioning cooling system, characterized in that, include: The compressor (1), condenser group (2), throttling device (3), and evaporator group (4) are connected in sequence to form a refrigerant circuit. The exhaust port (1a) and suction port (1b) of the compressor (1) are respectively connected to the refrigerant inlet of the condenser group (2) and the refrigerant outlet of the evaporator group (4); the cabinet air conditioning heat dissipation system also includes: A gas-liquid separator (5), the inlet (5a) of which is connected to the condenser group (2), is configured to perform gas-liquid separation on the gas-liquid mixed refrigerant from the condenser group (2); A vortex tube (6), the inlet (6a) of which is connected to the outlet (5b) of the gas-liquid separator (5), is configured to perform vortex separation on the gaseous refrigerant separated by the gas-liquid separator (5); and Electrical box radiator (7) is installed in the electrical box (8) of the cabinet air conditioner. The inlet (7a) of the electrical box radiator (7) is connected to the cold air outlet (6b) of the vortex tube (6) so as to dissipate heat from the electrical box (8) through the refrigerant separated by the vortex tube (6). The condenser group (2) includes a first condenser (21) and a second condenser (22) connected in series. The inlet (21a) of the first condenser (21) is connected to the exhaust port (1a) of the compressor (1). The outlet (21b) of the first condenser (21) is connected to the inlet (22a) of the second condenser (22). The inlet (5a) of the gas-liquid separator (5) is connected to the outlet (21b) of the first condenser (21). The hot gas outlet (6c) of the vortex tube (6) is connected to the inlet (22a) of the second condenser (22).

2. The cabinet air conditioning heat dissipation system according to claim 1, characterized in that, Also includes: A first one-way valve (91) is disposed on the refrigerant flow path between the hot gas outlet (6c) of the vortex tube (6) and the inlet (22a) of the second condenser (22), and is configured to allow one-way flow from the hot gas outlet (6c) of the vortex tube (6) to the inlet (22a) of the second condenser (22).

3. The cabinet air conditioning cooling system according to claim 1, characterized in that, The outlet (22b) of the second condenser (22) is connected to the throttling device (3), and the outlet (5c) of the gas-liquid separator (5) is connected to the outlet (22b) of the second condenser (22).

4. The cabinet air conditioning heat dissipation system according to claim 3, characterized in that, Also includes: The second one-way valve (92) is disposed on the refrigerant flow path between the liquid outlet (5c) of the gas-liquid separator (5) and the outlet (22b) of the second condenser (22), and is configured to allow one-way flow from the liquid outlet (5c) of the gas-liquid separator (5) to the outlet (22b) of the second condenser (22).

5. The cabinet air conditioning cooling system according to claim 1, characterized in that, The evaporator group (4) includes a first evaporator (41) and a second evaporator (42) connected in series. The outlet (41b) of the first evaporator (41) is connected to the inlet (42a) of the second evaporator (42). The outlet (42b) of the second evaporator (42) is connected to the suction port (1b) of the compressor (1). The outlet (7b) of the electrical box radiator (7) is connected to the outlet (41b) of the first evaporator (41).

6. The cabinet air conditioning heat dissipation system according to claim 5, characterized in that, Also includes: A third one-way valve (93) is disposed on the refrigerant flow path between the outlet (7b) of the electrical box radiator (7) and the outlet (41b) of the first evaporator (41), and is configured to allow one-way flow from the outlet (7b) of the electrical box radiator (7) to the outlet (41b) of the first evaporator (41).

7. The cabinet air conditioning cooling system according to any one of claims 1 to 6, characterized in that, Also includes: A switching valve (94) is provided in the refrigerant flow path between the inlet (5a) of the gas-liquid separator (5) and the condenser group (2); A first temperature sensor (97), located inside the electrical box (8), is configured to detect the temperature inside the electrical box (8); and The controller (96), which is signal-connected to the switching valve (94) and the first temperature sensor (97), is configured to issue an on / off command to the switching valve (94) based on the temperature inside the electrical box (8) so that the switching valve (94) is turned on or off.

8. The cabinet air conditioning cooling system according to any one of claims 1 to 6, characterized in that, Also includes: A first temperature sensor (97), located inside the electrical box (8), is configured to detect the temperature inside the electrical box (8); and A second temperature sensor (98) is located on the heat sink (7) of the electrical box and is configured to detect the temperature of the heat sink (7); A proportional valve (95) is provided in the refrigerant flow path between the cold air outlet (6b) of the vortex tube (6) and the inlet (7a) of the electrical box radiator (7); The controller (96), which is connected to the proportional valve (95), the first temperature sensor (97) and the second temperature sensor (98), is configured to issue a flow regulation command to the proportional valve (95) based on the difference between the temperature inside the electrical box (8) and the temperature of the electrical box radiator (7) to adjust the refrigerant flow rate from the cold air outlet (6b) of the vortex tube (6) into the inlet (7a) of the electrical box radiator (7).

9. A cabinet air conditioner, characterized in that, include: Electrical box (8); and The cabinet air conditioning cooling system according to any one of claims 1 to 8.

10. A control method for a cabinet air conditioning heat dissipation system according to claim 7, characterized in that, include: Temperature inside the electrical box (8) of the receiver cabinet air conditioner; Determine whether the temperature inside the electrical box (8) is greater than the preset temperature threshold. If it is greater than the preset temperature threshold, then turn on the switching valve (94) so ​​that the gas-liquid separator (5) can separate the gas-liquid mixture from the condenser group (2) and perform vortex separation on the gas-liquid separator (5) through the vortex tube (6). Then, the refrigerant separated by the vortex tube (6) can dissipate heat from the electrical box (8).

11. A control method for a cabinet air conditioning heat dissipation system according to claim 8, characterized in that, include: The temperature inside the electrical box (8) and the temperature of the electrical box radiator (7) are received; Calculate the difference between the temperature inside the electrical box (8) and the temperature of the radiator (7) of the electrical box; Based on the temperature difference between the electrical box (8) and the electrical box radiator (7), the proportional valve (95) adjusts the refrigerant flow rate from the cold air outlet (6b) of the vortex tube (6) to the inlet (7a) of the electrical box radiator (7).

12. The control method according to claim 11, characterized in that, The step of adjusting the refrigerant flow rate from the cold air outlet (6b) of the vortex tube (6) to the inlet (7a) of the electrical box radiator (7) based on the temperature difference between the temperature inside the electrical box (8) and the temperature of the electrical box radiator (7) includes: Compare the difference with the dew point temperature difference; If the difference exceeds the dew point temperature difference, the proportional valve (95) reduces the refrigerant flow from the cold air outlet (6b) of the vortex tube (6) into the inlet (7a) of the electrical box radiator (7).

13. The control method according to claim 11 or 12, characterized in that, The step of adjusting the refrigerant flow rate from the cold air outlet (6b) of the vortex tube (6) to the inlet (7a) of the electrical box radiator (7) based on the temperature difference between the temperature inside the electrical box (8) and the temperature of the electrical box radiator (7) includes: Compare the difference with the dew point temperature difference; If the difference is lower than the dew point temperature difference, the proportional valve (95) is adjusted to increase the refrigerant flow rate from the cold air outlet (6b) of the vortex tube (6) to the inlet (7a) of the electrical box radiator (7).

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