CN104764114A - Cooling system and air conditioning system - Google Patents

Abstract

The invention discloses a cooling system and an air conditioning system. The cooling system comprises a heat exchange pipeline (1) and a cooling circulation pipeline (2) which are independent of each other, wherein a hydraulic pump (3) and a liquid storage device (4) are arranged on the cooling circulation pipeline (2), and the heat exchange pipeline (1) is partially arranged in the liquid storage device (4). According to the cooling system disclosed by the invention, the length and complexity of a pipeline connected to a refrigerating system can be reduced, and the problem of easy refrigerant leakage is effectively solved.

Description

Cooling and air conditioning systems

technical field

The invention relates to the technical field of air conditioning, in particular to a cooling system and an air conditioning system.

Background technique

The life of the controller of the refrigeration system is closely related to its working temperature. If the heat generated by the controller cannot be dissipated in time, it will affect its working stability and reliability. At present, the cooling of the controller of the refrigeration system is mainly based on the air-cooled cooling of the heat sink, the heat dissipation efficiency is low, and it is difficult to meet the heat dissipation requirements of high heat flux density, so it has a negative impact on the stable operation of the controller.

In order to solve the above problems, there is a solution to directly use the condensed liquid to cool the controller. However, the direct cooling of the condensed liquid increases the length and complexity of the refrigeration system and is prone to refrigerant leakage.

Contents of the invention

Embodiments of the present invention provide a cooling system and an air conditioning system, which can reduce the length and complexity of pipelines connected to the refrigeration system, and effectively overcome the problem of easy refrigerant leakage.

In order to achieve the above object, an embodiment of the present invention provides a cooling system, which includes a heat exchange pipeline and a cooling circulation pipeline that are independent of each other. A hydraulic pump and a liquid reservoir are arranged on the cooling circulation pipeline. inside the liquid container.

Preferably, both the inlet and outlet of the hydraulic pump are provided with a third electromagnetic valve.

Preferably, the hydraulic pump is a flow-adjustable hydraulic pump.

Preferably, a flow regulating valve is arranged on the cooling circulation pipeline.

Preferably, the first end of the heat exchange pipeline is provided with a first electromagnetic valve, and the second end of the heat exchange pipeline is provided with a second electromagnetic valve.

Preferably, the part of the heat exchange pipeline located in the liquid reservoir forms a coil.

Preferably, the outlet end of the hydraulic pump is connected to the upper part of the liquid reservoir, and the inlet end of the hydraulic pump is connected to the lower part of the liquid reservoir.

Preferably, a coolant injection pipeline is connected to the liquid reservoir, and a fifth electromagnetic valve is arranged on the coolant injection pipeline.

According to another aspect of the present invention, the air conditioning system includes a refrigeration system and a cooling system, the cooling system is the above cooling system, and the inlet and outlet of the heat exchange pipeline of the cooling system are connected to the refrigeration system.

Preferably, the refrigeration system includes a refrigerant pipeline and a compressor connected through the refrigerant pipeline, an oil separator, a reversing valve, an outdoor heat exchanger, a throttling device, an indoor heat exchanger, a controller, and a gas-liquid separator. The inlet and outlet of the pipeline are connected to the refrigerant pipeline between the indoor heat exchanger and the reversing valve. The cooling circulation pipeline of the cooling system is set in cooperation with the controller to cool the controller. The refrigerant between the inlet and outlet of the cooling system A fourth electromagnetic valve is arranged on the pipeline.

Applying the technical proposal of the present invention, the cooling system includes mutually independent heat exchange pipelines and cooling circulation pipelines, a hydraulic pump and a liquid reservoir are arranged on the cooling circulation pipelines, and heat exchange pipelines are partially arranged in the liquid reservoirs. When the cooling system is used in conjunction with the refrigeration system, the refrigerant introduced into the refrigeration system through the heat exchange pipeline can exchange heat with the cooling circulation pipeline. Since the heat exchange pipeline and the cooling circulation pipeline of the cooling system are independent of each other, so It is possible to exchange heat with the coolant in the cooling circulation pipeline in the liquid receiver through the heat exchange pipeline, and then cool down the components to be cooled through the cooling circulation pipeline, reducing the need to directly cool the components to be cooled through the heat exchange pipeline The length of the heat exchange pipeline required during the operation reduces the length and complexity of the pipeline connected to the refrigeration system, and effectively overcomes the problem of easy refrigerant leakage caused by the too long pipeline connected to the refrigeration system.

Description of drawings

Fig. 1 is a working principle diagram of an air conditioning system according to an embodiment of the present invention.

Description of reference signs: 1. Heat exchange pipeline; 2. Cooling circulation pipeline; 3. Hydraulic pump; 4. Liquid reservoir; 5. Third solenoid valve; 6. First solenoid valve; 7. Second solenoid valve ;8. Coil pipe; 9. Refrigerant pipeline; 10. Compressor; 11. Oil separator; 12. Reversing valve; 13. Outdoor heat exchanger; 14. Throttle device; 15. Indoor heat exchanger; 16 1. Controller; 17. Gas-liquid separator; 18. Fourth solenoid valve; 19. Coolant injection pipeline; 20. Fifth solenoid valve.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Referring to Fig. 1, according to an embodiment of the present invention, the cooling system includes a mutually independent heat exchange pipeline 1 and a cooling circulation pipeline 2, and the cooling circulation pipeline 2 is provided with a hydraulic pump 3 and a liquid reservoir 4, and the heat exchange The pipeline 1 is partly arranged in the reservoir 4 .

When the cooling system is used in conjunction with the refrigeration system, the refrigerant introduced into the refrigeration system through the heat exchange line 1 can exchange heat with the cooling cycle line 2, because the heat exchange line 1 and the cooling cycle line 2 of the cooling system They are independent of each other, so it is possible to exchange heat with the coolant in the cooling circulation pipeline 2 through the heat exchange pipeline 1 in the liquid reservoir 4, and then cool down the components to be cooled through the cooling circulation pipeline 2, reducing the need for direct heat exchange The length of the heat exchange pipeline 1 required by the pipeline 1 to cool down the components to be cooled reduces the length and complexity of the pipeline connected to the refrigeration system, and effectively overcomes the risk of accidents caused by excessively long pipelines connected to the refrigeration system. The problem of refrigerant leakage.

In addition, since the heat exchange pipeline 1 and the cooling circulation pipeline 2 are independent of each other, different liquids can be introduced into the heat exchange pipeline 1 and the cooling circulation pipeline 2, that is, the cooling circulation pipeline 2 can be passed Injecting lower-cost coolant, thereby reducing the cost of the overall cooling system.

The cooling system can also be used in conjunction with other equipment that is prone to liquid leakage due to too long pipelines, reducing the length of pipelines connected to the equipment, and can use the low-temperature liquid of the equipment itself to cool down the components to be cooled, thereby improving Implement resource allocation well.

Both the inlet end and the outlet end of the hydraulic pump 3 are provided with a third solenoid valve 5. When the hydraulic pump 3 needs to be replaced or repaired, the two third solenoid valves 5 at both ends of the hydraulic pump 3 can be controlled to close and connect to the hydraulic pump 3. The refrigerant pipeline 9, so that the hydraulic pump 3 can be easily disassembled from the cooling circulation pipeline 2.

In this embodiment, the hydraulic pump 3 is a flow-adjustable hydraulic pump, and the flow adjustment of the hydraulic pump 3 is controlled according to the temperature of the parts to be cooled. When the temperature of the parts to be cooled exceeds the ideal temperature, the hydraulic pump 3 is adjusted to make the cooling The flow rate of the cooling liquid in the circulation pipeline 2 is increased, thereby improving the heat dissipation of the cooling circulation pipeline 2 to the component 16 to be cooled, rapidly reducing the temperature of the component 16 to be cooled, and making the component 16 to be cooled to work within a safe temperature range. When the temperature of the parts to be cooled is slightly higher than the ideal temperature, the hydraulic pump 3 can be adjusted to reduce the flow rate of the cooling liquid in the cooling circulation line 2 and reduce the output power of the hydraulic pump 3, thereby reducing the temperature of the parts to be cooled while ensuring the temperature of the parts to be cooled. Low power consumption to achieve energy saving.

A flow regulating valve can also be set on the cooling circulation pipeline 2, and the hydraulic pump 3 at this time can be a hydraulic pump with a constant flow rate. When it is necessary to adjust the flow rate of the coolant in the cooling circulation pipeline 2, it can The state of the flow regulating valve is controlled, so as to realize the adjustment of the cooling liquid flow in the cooling circulation pipeline 2 .

The first end of the heat exchange pipeline 1 is provided with a first electromagnetic valve 6, and the second end of the heat exchange pipeline 1 is provided with a second electromagnetic valve 7, which can close the heat exchange tube when the refrigerant introduced into the refrigeration system is not needed. The first end and the second end of the circuit 1 prevent the refrigerant in the refrigeration system from flowing into the heat exchange circuit 1, and the control is simpler and more convenient.

Preferably, the part of the heat exchange pipeline 1 located in the liquid reservoir 4 forms a coil 8, which can have a larger contact area with the cooling liquid in the liquid reservoir 4, and improve the heat exchange pipeline 1 and the liquid storage 4. The heat exchange efficiency of the coolant improves the cooling performance of the cooling system. The coil pipe 8 here can also be other structures, as long as the contact area between the heat exchange pipeline 1 and the coolant in the liquid reservoir 4 can be increased, and the contact area between the heat exchange pipeline 1 and the coolant in the liquid reservoir 4 can be improved. heat exchange efficiency.

The outlet end of the hydraulic pump 3 is connected to the upper part of the liquid reservoir 4, and the inlet end of the hydraulic pump 3 is connected to the lower part of the liquid reservoir 4, so as to ensure that the coolant entering the cooling circulation line 2 is all liquid and will not affect the cooling system Excellent cooling performance, and also avoid cavitation phenomenon caused by hydraulic pump 3 sucking too much gas.

The heat exchange between the refrigeration system and the cooling system is realized through the liquid receiver 4 and the coil pipe 8 . The hydraulic pump 3 extracts the coolant in the liquid reservoir 4 to cool the parts to be cooled, absorb the heat emitted by the parts to be cooled, and turn it into a high-temperature gas, and then the high-temperature gas enters the liquid reservoir 4 from the upper part of the liquid reservoir 4. At this time, the 8 coils in the accumulator 4 flow low-temperature and low-pressure liquid refrigerant, and the low-temperature and low-pressure liquid refrigerant in the coil 8 exchanges heat with the high-temperature coolant outside the coil 8, reducing the temperature of the coolant in the liquid storage tank , and make it change from a gas phase to a liquid phase, and the temperature of the liquid-phase refrigerant is lower than the temperature of the component to be cooled, so that the cooling liquid in the liquid storage tank 4 can continue to absorb the temperature of the component to be cooled in the next cycle, and the component to be cooled For cooling and heat dissipation. The component to be cooled in this embodiment is the controller 16 .

Preferably, a coolant injection pipeline 19 is connected to the liquid reservoir 4 , and a fifth solenoid valve 20 is arranged on the coolant injection pipeline 19 . The coolant injection pipeline 19 can inject coolant into the liquid storage 4 in real time, without stopping the operation of the cooling system, it can keep a sufficient amount of cooling liquid in the liquid storage 4 all the time, which can avoid the damage caused by the long-term operation of the cooling system. Insufficient coolant, unable to effectively cool the components to be cooled, and can ensure the safe and stable operation of the cooling system. The fifth electromagnetic valve 20 can control the on-off of the coolant injection pipeline 19 to prevent the coolant from leaking from the coolant injection pipeline 19 .

Certainly, the cooling liquid injection pipeline 19 may not be provided, but a liquid injection port is provided on the liquid reservoir 4 , and when cooling liquid needs to be added, the cooling liquid may be directly injected into the liquid storage 4 from the liquid injection port.

Referring to Fig. 1, according to an embodiment of the present invention, the air conditioning system includes a refrigeration system and a cooling system, the cooling system is the above-mentioned cooling system, the inlet and outlet of the heat exchange pipeline 1 of the cooling system are connected to the refrigeration system, And the refrigerant introduced into the refrigeration system cools down the cooling liquid in the liquid receiver 4 .

The refrigeration system includes a refrigerant pipeline 9 and a compressor 10 connected through the refrigerant pipeline 9, an oil separator 11, a reversing valve 12, an outdoor heat exchanger 13, a throttling device 14, an indoor heat exchanger 15, a controller 16 and an air compressor. The liquid separator 17, the inlet and outlet of the heat exchange pipeline 1 are connected on the refrigerant pipeline 9 between the indoor heat exchanger 15 and the reversing valve 12, and the cooling circulation pipeline 2 of the cooling system is arranged in cooperation with the controller 16 to The cooling controller 16 is provided with a fourth solenoid valve 18 on the refrigerant pipeline 9 between the inlet and the outlet of the cooling system.

The fourth electromagnetic valve 18 can be closed when the refrigerant in the refrigeration system needs to enter the heat exchange pipeline 1, so that the refrigerant in the refrigeration system can quickly enter the heat exchange pipeline 1, and pass through the heat exchange pipeline 1 and the storage liquid. The coolant in the reservoir 4 performs heat exchange, thereby cooling the coolant in the reservoir 4 . When the refrigerant in the refrigeration system does not need to enter the heat exchange pipeline 1, the fourth electromagnetic valve 18 can be opened, and the first electromagnetic valve 6 and the second electromagnetic valve 7 can be closed at the same time, so as to ensure the normal operation of the refrigeration system and reduce the operating temperature of the refrigeration system. Power consumption makes the control of the air conditioning system simpler and more convenient, and the work efficiency is higher.

The part where the cooling circulation pipeline 2 cooperates with the controller 16 to dissipate heat can be configured as a coil structure, so as to increase the contact area between the cooling circulation pipeline 2 and the controller 16 and improve heat exchange efficiency. The cooling circulation pipeline 2 may also be directly connected to the radiator on the controller 16 and flow through the radiator on the controller 16 to exchange heat with the controller 16 . The cooperation structure between the cooling circulation pipeline 2 and the controller 16 can also be other kinds, as long as the cooling medium flow in the cooling circulation pipeline 2 can dissipate heat to the controller 16 .

When the temperature of the controller 16 is low and does not require cooling, the refrigeration system operates normally. At this time, the first solenoid valve 6 and the second solenoid valve 7 are closed, the fourth solenoid valve 18 is opened, and the hydraulic pump 3 is not started. The two third solenoid valves 5 at the end are closed. When the temperature of the controller 16 is high and needs to be cooled, the two third electromagnetic valves 5 at both ends of the hydraulic pump 3 are opened, the fourth electromagnetic valve 18 is closed, the hydraulic pump 3 starts, the first electromagnetic valve 6 and the second electromagnetic valve The valve 7 is opened, and the hydraulic pump 3 extracts the low-temperature liquid refrigerant in the accumulator 4, and pumps it to the controller 16 to cool the controller 16.

Of course, the above are preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the basic principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims (10)

1. a cooling system, it is characterized in that, comprise mutual independently heat exchanging pipe (1) and cool cycles pipeline (2), described cool cycles pipeline (2) is provided with hydraulic pump (3) and reservoir (4), described heat exchanging pipe (1) part is arranged in described reservoir (4).

2. cooling system according to claim 1, is characterized in that, the entrance point of described hydraulic pump (3) and the port of export are provided with the 3rd magnetic valve (5).

3. cooling system according to claim 1, is characterized in that, described hydraulic pump (3) is adjustable-flow hydraulic pump (3).

4. cooling system according to claim 1, is characterized in that, described cool cycles pipeline (2) is provided with flow control valve.

5. cooling system according to claim 2, it is characterized in that, the first end of described heat exchanging pipe (1) is provided with the first magnetic valve (6), and the second end of described heat exchanging pipe (1) is provided with the second magnetic valve (7).

6. cooling system according to any one of claim 1 to 5, is characterized in that, the part that described heat exchanging pipe (1) is positioned at described reservoir (4) forms coil pipe (8).

7. cooling system according to any one of claim 1 to 5, it is characterized in that, the port of export of described hydraulic pump (3) is connected to the top of described reservoir (4), and the entrance point of described hydraulic pump (3) is connected to the bottom of described reservoir (4).

8. cooling system according to any one of claim 1 to 5, it is characterized in that, described reservoir (4) is connected with cooling fluid filling line (19), described cooling fluid filling line (19) is provided with the 5th magnetic valve (20).

9. an air-conditioning system, comprise refrigeration system and cooling system, it is characterized in that, the cooling system of described cooling system according to any one of claim 1 to 8, import and the outlet of the heat exchanging pipe (1) of described cooling system are all connected to described refrigeration system.

10. air-conditioning system according to claim 9, it is characterized in that, the compressor (10) that described refrigeration system is comprised refrigerant pipeline (9) and connected by described refrigerant pipeline (9), oil eliminator (11), reversal valve (12), outdoor heat exchanger (13), throttling arrangement (14), indoor heat exchanger (15), controller (16) and gas-liquid separator (17), the import of described heat exchanging pipe (1) and outlet are connected on the described refrigerant pipeline (9) between described indoor heat exchanger (15) and described reversal valve (12), cool cycles pipeline (2) and the described controller (16) of described cooling system are equipped with to cool described controller (16), described refrigerant pipeline (9) between the import of described cooling system and outlet is provided with the 4th magnetic valve (18).