Refrigerating system and testing and sorting equipment

Abstract

The utility model relates to a refrigeration system and test sorting equipment, which comprises a first refrigeration module, a second refrigeration module, a third refrigeration module, a fourth refrigeration module, a fifth refrigeration module and a sixth refrigeration module, and is characterized in that the first refrigeration module comprises a throttle mechanism, a first compressor, a first condenser and an evaporator; the first compressor, the first condenser, the first throttle valve and the evaporator are sequentially communicated to form a first circulation loop for circulating flow of a refrigerant; the cooling module comprises a heat exchanger, a first heat exchange pipeline and a liquid storage part, and the heat exchanger, the first heat exchange pipeline and the liquid storage part are communicated to form a second circulation loop allowing cooling liquid to circularly flow; the second circulation loop and the cold source can exchange heat through the heat exchanger, the cold source can cool cooling liquid in the second circulation loop, and the second circulation loop enables the evaporator to be cooled through the first heat exchange pipeline; the refrigerating system is switched between a first mode and a second mode through the switching mechanism; when the refrigerating system is in a first mode, the first circulation loop is connected, and the second circulation loop is disconnected; and when the refrigerating system is in the second mode, the second circulation loop is connected, and the first circulation loop is disconnected.

Description

Technical Field

[0001] The utility model relates to the technical field of testing and sorting equipment, in particular to a refrigeration system and testing and sorting equipment. Background Art

[0002] Before electronic components are put into use, they need to be tested and sorted by testing and sorting equipment. The testing and sorting equipment includes a refrigeration system and a heating system. The refrigeration system is used as a cold source, and the heating system is used as a heat source. The temperature of the electronic components is controlled by the cold and hot confrontation between the cold source and the heat source.

[0003] At present, the requirements for the temperature control range of electronic components are becoming more and more extreme, expanding to low temperature and high temperature. Traditional refrigerant direct cooling refrigeration systems can generally meet the needs of low temperature conditions, but when operating at high temperature (such as 200℃ or higher) for a long time, the refrigerant oil in the refrigerant is easy to decompose, carbonize and deteriorate, which will cause compressor failure. Therefore, it cannot meet the wide range of temperature control requirements from low temperature to high temperature. Utility Model Content

[0004] Based on this, it is necessary to provide a refrigeration system and testing and sorting equipment that can meet the needs of a wide range of temperature control in order to address the problem that traditional refrigeration systems cannot meet the needs of a wide range of temperature control.

[0005] A refrigeration system, comprising:

[0006] A first refrigeration module comprises a throttling mechanism, a first compressor, a first condenser and an evaporator, wherein the throttling mechanism comprises a first throttling valve; the first compressor, the first condenser, the first throttling valve and the evaporator are sequentially connected to form a first circulation loop for circulating refrigerant;

[0007] A cooling module, comprising a heat exchanger, a first heat exchange pipeline and a liquid storage member, wherein the heat exchanger, the first heat exchange pipeline and the liquid storage member are connected to form a second circulation loop for circulating coolant;

[0008] A cold source, the second circulation loop and the cold source can exchange heat through the heat exchanger, the cold source can cool the coolant in the second circulation loop, and the second circulation loop cools the evaporator through the first heat exchange pipeline;

[0009] A switching mechanism, the refrigeration system switches between a first mode and a second mode through the switching mechanism; when the refrigeration system is in the first mode, the first circulation loop is connected and the second circulation loop is disconnected; when the refrigeration system is in the second mode, the second circulation loop is connected and the first circulation loop is disconnected.

[0010] In one embodiment, the refrigeration system further includes a second heat exchange pipeline, which is arranged between the output end of the first condenser and the input end of the first compressor;

[0011] When the refrigeration system is in the second mode, the switching mechanism disconnects the first condenser from the evaporator, the second heat exchange pipeline is connected, and the first compressor, the first condenser and the second heat exchange pipeline are located on a third circulation loop for circulating refrigerant;

[0012] The third circulation loop forms the cold source, and the refrigerant in the second heat exchange pipeline is expanded and depressurized by the throttling mechanism and then flows through the heat exchanger to exchange heat with the coolant.

[0013] In one of the embodiments, when the refrigeration system is in the first mode, the switching mechanism disconnects the second heat exchange pipeline.

[0014] In one embodiment, the second heat exchange pipeline is connected to the output end of the first condenser through the first throttle valve, the third circulation loop includes the first compressor, the first condenser, the first throttle valve and the second heat exchange pipeline connected in sequence, and the refrigerant in the second heat exchange pipeline is expanded and depressurized through the first throttle valve and then flows through the heat exchanger; or

[0015] The throttling mechanism also includes a second throttling valve. The second heat exchange pipeline is directly connected to the output end of the first condenser. The second throttling valve is arranged on the second heat exchange pipeline. The third circulation loop includes the first compressor, the first condenser, the second throttling valve and the second heat exchange pipeline connected in sequence. The refrigerant in the second heat exchange pipeline is expanded and reduced in pressure through the second throttling valve and then flows through the heat exchanger.

[0016] In one embodiment, the switching mechanism includes:

[0017] a first control valve, wherein the second heat exchange pipeline has a connection point with the first circulation loop, and the first control valve is provided on the first circulation loop and located between the connection point and the evaporator, so as to control the on-off of the first circulation loop;

[0018] A second control valve is provided on the second circulation loop to control the on and off of the second circulation loop;

[0019] The third control valve is arranged on the second heat exchange pipeline to control the on-off of the second circulation loop.

[0020] In one embodiment, the coolant is a high temperature resistant fluorinated liquid or heat transfer oil.

[0021] In one embodiment, the cooling module further includes a power pump, and the power pump is disposed on the second circulation loop to provide flow force for the coolant to flow in the second circulation loop.

[0022] In one of the embodiments, the refrigeration system further includes a heat dissipation module for dissipating heat of the first condenser.

[0023] In one embodiment, the heat dissipation module includes a second refrigeration module, the second refrigeration module includes a second compressor, a second condenser, a third throttle valve and the first condenser, and the second compressor, the second condenser, the third throttle valve and the first condenser are connected in sequence to form a heat dissipation circuit.

[0024] A testing and sorting device comprises a pressure head, a heating system and a refrigeration system as described above, wherein the refrigeration system can transfer heat to the pressure head through an evaporator, and the refrigeration system and the heating system counteract each other in cold and heat to control the temperature of the pressure head.

[0025] The above-mentioned refrigeration system and test and sorting equipment, when in low temperature conditions, controls the switching mechanism to switch the refrigeration system to the first mode, at which time the first circulation loop is connected, while the second circulation loop is disconnected, and the refrigerant in the first circulation loop reduces the temperature of the evaporator to control the temperature of the electronic components. In high temperature conditions, the control switching mechanism switches the refrigeration system to the second mode, at which time the second circulation loop is connected, while the first circulation loop is disconnected, and the coolant in the second circulation loop reduces the temperature of the evaporator to control the temperature of the electronic components. The refrigerant only cools the evaporator under low temperature conditions, and does not participate in cooling the evaporator under high temperature conditions. The low temperature conditions will not cause the refrigerant oil in the refrigerant to decompose, carbonize and deteriorate, thereby protecting the first compressor. At the same time, the cold source can cool the coolant in the second circulation loop, and the coolant can cool the evaporator under high temperature conditions. In this way, the refrigeration system not only meets the requirements of low temperature conditions, but also meets the requirements of high temperature conditions, achieving the requirements of a wide range of temperature control from low temperature to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a refrigeration system provided in one embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a refrigeration system provided in another embodiment of the present application;

[0028] Figure 3 A schematic diagram of the structure of a refrigeration system provided in yet another embodiment of the present application;

[0029] Figure 4 for Figure 1, a diagram showing the on-off state of each circuit of the refrigeration system in the first mode (in the diagram, solid lines represent circuit connection, and dashed lines represent circuit disconnection);

[0030] Figure 5 for Figure 1 The on-off diagram of each circuit of the refrigeration system in the second mode shown in ;

[0031] Figure 6 A schematic diagram of the structure of part of the test and sorting equipment provided in one embodiment of the present application.

[0032] Description of reference numerals:

[0033] 100. Refrigeration system; 10. First refrigeration module; 11. First compressor; 12. First condenser; 13. First throttle valve; 14. Evaporator; 15. Second throttle valve; 16. First liquid injection port; 20. Cooling module; 21. Heat exchanger; 22. First heat exchange pipeline; 23. Liquid storage member; 24. Power pump; 25. Second liquid injection port; 30. Controller; 40. Second heat exchange pipeline; 51. First control valve; 52. Second control valve; 53. Third control valve; 60. Second refrigeration module; 61. Second compressor; 62. Second condenser; 63. Third throttle valve; 70. Cold source; A. First circulation loop; B. Second circulation loop; C. Third circulation loop; D. Heat dissipation loop; 200. Heating system; 300. Pressure head; 400. Heat transfer medium. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] See also Figure 1 In one embodiment of the present application, a refrigeration system 100 is provided for controlling the temperature of electronic components. Specifically, the refrigeration system 100 cooperates with the heating system to control the temperature of the electronic components. In some specific implementations, the electronic components are chips, and the refrigeration system 100 cooperates with the heating system to control the temperature of the chip. It is understood that in some other implementations, the types of electronic components are not limited.

[0041] The refrigeration system 100 includes a first refrigeration module 10, which includes a throttling mechanism, a first compressor 11, a first condenser 12 and an evaporator 14. The throttling mechanism includes a first throttle valve 13. The first compressor 11, the first condenser 12, the first throttle valve 13 and the evaporator 14 are connected in sequence to form a first circulation loop A for circulating refrigerant. When the first circulation loop A is working, the first compressor 11 sucks the refrigerant output from the output end of the evaporator 14, compresses the refrigerant, and the refrigerant is discharged from the output end (exhaust end) of the first compressor 11 to the first condenser 12. When the refrigerant passes through the first condenser 12, it is condensed by the first condenser 12, and is expanded and depressurized by the first throttle valve 13, and finally input into the evaporator 14 again from the input end of the evaporator 14. When the refrigerant enters the evaporator 14, it can exchange heat with the electronic components, thereby controlling the temperature of the electronic components. The refrigerant after heat exchange enters the first compressor 11 again from the output end of the evaporator 14, and the cycle repeats.

[0042] Furthermore, in order to ensure that there is sufficient refrigerant in the first circulation loop A, a first liquid injection port 16 is provided on the first circulation loop A, and the refrigerant is injected into the first circulation loop A through the first liquid injection port 16 .

[0043] Continue reading Figure 1 The refrigeration system 100 further includes a cooling module 20, which includes a heat exchanger 21, a first heat exchange pipeline 22 and a liquid storage member 23. The heat exchanger 21, the first heat exchange pipeline 22 and the liquid storage member 23 are connected to form a second circulation loop B for circulating the coolant. The cooling module 20 further includes a power pump 24, which is disposed in the second circulation loop B to provide flow force for the coolant to flow in the second circulation loop B.

[0044] Furthermore, in order to ensure that the second circulation loop B is filled with sufficient coolant, a second liquid injection port 25 is provided on the second circulation loop B, and coolant is injected into the second circulation loop B through the second liquid injection port 25. Optionally, the liquid storage member 23 is a liquid storage tank, and the second liquid injection port 25 is provided on the liquid storage member 23. It is conceivable that in some other embodiments, the shape of the liquid storage member 23 is not limited, and the opening position of the second liquid injection port 25 on the second circulation loop B is also not limited.

[0045] Continue reading Figure 1 , and see Figure 2The refrigeration system 100 further includes a cold source 70. The second circulation loop B exchanges heat with the cold source 70 through the heat exchanger 21. The cold source 70 can cool the coolant in the second circulation loop B. The second circulation loop B cools down the evaporator 14 through the first heat exchange pipe 22. When the second circulation loop B is working, the cold source 70 can cool the coolant in the second circulation loop B, so that the temperature of the coolant is reduced. Since the second circulation loop B cools down the evaporator 14 through the first heat exchange pipe 22, the coolant in the second circulation loop B can transfer heat to the evaporator 14 through the second heat exchange pipe 40, so that the temperature of the evaporator 14 is reduced.

[0046] In some embodiments, the evaporator 14 is a dual-channel evaporator, specifically, the evaporator 14 includes a first channel and a second channel. The two ends of the first channel are respectively connected to the first throttle valve 13 and the first compressor 11. At this time, the first compressor 11, the first condenser 12, the first throttle valve 13 and the first channel of the evaporator 14 are sequentially connected to form a first circulation loop A. The second channel is a part of the first heat exchange pipeline 22, that is, the second channel is also a part of the second circulation loop B. When the coolant flows through the second channel, the temperature of the evaporator 14 can be reduced. In other embodiments, the evaporator 14 can also be a single-channel evaporator. At this time, the channel in the evaporator 14 is used for the refrigerant to flow through to form the first circulation loop A. The first heat exchange pipeline 22 is set independently of the evaporator 14 and can exchange heat with the evaporator 14. When the coolant flows through the first heat exchange pipeline 22, the temperature of the evaporator 14 can be reduced.

[0047] The refrigeration system 100 further includes a switching mechanism, through which the refrigeration system 100 can switch between a first mode and a second mode. When the refrigeration system 100 is in the first mode, the first circulation loop A is connected, and the second circulation loop B is disconnected. When the refrigeration system 100 is in the second mode, the second circulation loop B is connected, and the first circulation loop A is disconnected.

[0048] It should be noted that the meaning of "circulation loop connection" is that the structures forming the circulation loop are connected in sequence, so that the circulation loop is in a normal working state for the refrigerant or coolant to circulate therein. The meaning of "circulation loop disconnection" is that at least part of the circulation loop is cut off, and the refrigerant or coolant cannot circulate in the circulation loop.

[0049] The refrigeration system 100 provided in the embodiment of the present application, in low temperature conditions, controls the switching mechanism to switch the refrigeration system 100 to the first mode, at which time the first circulation loop A is connected, and the second circulation loop B is disconnected, and the refrigerant in the first circulation loop A reduces the temperature of the evaporator 14 to control the temperature of the electronic components. In high temperature conditions, the switching mechanism controls the refrigeration system 100 to switch to the second mode, at which time the second circulation loop B is connected, and the first circulation loop A is disconnected, and the coolant in the second circulation loop B reduces the temperature of the evaporator 14 to control the temperature of the electronic components. The refrigerant only cools the evaporator 14 under low temperature conditions, and does not participate in cooling the evaporator 14 under high temperature conditions. The low temperature conditions will not cause the refrigeration oil in the refrigerant to decompose, carbonize and deteriorate, thereby protecting the first compressor 11. At the same time, the cold source 70 can cool the coolant in the second circulation loop B, and the coolant can cool the evaporator 14 under high temperature conditions. In this way, the refrigeration system 100 not only meets the requirements of low temperature conditions, but also meets the requirements of high temperature conditions, achieving the requirements of a wide range of temperature control from low temperature to high temperature.

[0050] It should be noted that the temperature of the surface of the evaporator 14 under low temperature conditions is lower than that under high temperature conditions. Specifically, the temperature under low temperature conditions can be as low as -70°C, and the temperature under high temperature conditions can be as high as 200°C. It is understood that in some other embodiments, the specific values ​​of the temperature under low temperature conditions and high temperature conditions are not limited. Optionally, the refrigerant is Freon, and the coolant is a high temperature resistant liquid, such as a fluorinated liquid or a heat transfer oil.

[0051] Furthermore, the refrigeration system 100 further includes a controller 30 , the switching mechanism is electrically connected to the controller 30 , and the controller 30 controls the switching mechanism to operate so that the refrigeration system 100 switches between the first mode and the second mode.

[0052] In some embodiments, see Figure 1 , the refrigeration system 100 further includes a second heat exchange pipeline 40, which is arranged between the output end of the first condenser 12 and the input end of the first compressor 11. When the refrigeration system 100 is in the second mode, the switching mechanism disconnects the first condenser 12 from the evaporator 14, the second heat exchange pipeline 40 is connected, and the first compressor 11, the first condenser 12 and the second heat exchange pipeline 40 are located on the third circulation loop C for the circulation of the refrigerant. Among them, the third circulation loop C forms a cold source 70, and the refrigerant in the second heat exchange pipeline 40 is expanded and depressurized by the throttling mechanism and then flows through the heat exchanger 21 to exchange heat with the coolant.

[0053] In the above arrangement, in the second mode, that is, in the high temperature condition, the switching mechanism disconnects the first condenser 12 from the evaporator 14, and the first circulation loop A is disconnected. At this time, the second circulation loop B and the third circulation loop C are connected, and the third circulation loop C serves as a cold source 70. The refrigerant flows in the third circulation loop C and flows through the heat exchanger 21 after expansion and pressure reduction by the throttling mechanism. After passing through the heat exchanger 21, the refrigerant exchanges heat with the coolant, so that the temperature of the coolant is reduced. When the coolant with reduced temperature flows through the first heat exchange pipeline 22, the temperature of the evaporator 14 is reduced.

[0054] It can be seen that in the above embodiment, the cold source 70 is attached to a part of the structure of the first refrigeration module 10. The above arrangement simplifies the structural arrangement of the refrigeration system 100. It can be imagined that in other embodiments, continue to refer to Figure 2 The cold source 70 may also exist independently of the first refrigeration module 10 , such as providing another refrigeration module or other cooling mechanism as the cold source 70 , which is not limited here.

[0055] In some embodiments, the heat exchanger 21 is a dual-channel heat exchanger, specifically, the heat exchanger 21 includes a third channel and a fourth channel. The third channel, the liquid storage member 23 and the first heat exchange pipeline 22 are connected to form a second circulation loop B. The fourth channel is a part of the second heat exchange pipeline 40, that is, the fourth channel is also a part of the third circulation loop C. When the refrigerant passes through the fourth channel, it can exchange heat with the coolant in the second circulation loop B, so that the temperature of the coolant is reduced. In other embodiments, the heat exchanger 21 can also be a single-channel heat exchanger. In this case, the channel in the heat exchanger 21 is for the coolant to flow through to form the second circulation loop B. The second heat exchange pipeline 40 is set independently of the heat exchanger 21, and can exchange heat with the coolant through the heat exchanger 21. When the refrigerant flows through the second heat exchange pipeline 40, the temperature of the coolant can be reduced.

[0056] In some specific implementations, please refer to Figure 1 , the second heat exchange pipeline 40 is connected to the output end of the first condenser 12 through the first throttle valve 13, and the third circulation loop C includes the first compressor 11, the first condenser 12, the first throttle valve 13 and the second heat exchange pipeline 40 which are connected in sequence. Among them, the refrigerant in the second heat exchange pipeline 40 is expanded and depressurized through the first throttle valve 13 and then flows through the heat exchanger 21 for heat exchange. That is, whether it is the first circulation loop A or the third circulation loop C, the refrigerant flowing out of the first condenser 12 is expanded and depressurized through the first throttle valve 13, which further simplifies the structural setting of the refrigeration system 100.

[0057] In some other specific embodiments, see Figure 3, the throttling mechanism also includes a second throttle valve 15, the second heat exchanger 21 is directly connected to the output end of the first condenser 12, and the second throttle valve 15 is arranged on the second heat exchange pipeline 40. The third circulation loop C includes the first compressor 11, the first condenser 12, the second throttle valve 15 and the second heat exchange pipeline 40 which are connected in sequence, and the refrigerant in the second heat exchange pipeline 40 flows through the heat exchanger 21 after being expanded and reduced in pressure through the second throttle valve 15. In this way, in the first circulation loop A, the refrigerant flowing out of the first condenser 12 is expanded and reduced in pressure through the first throttle valve 13, and in the third circulation loop C, the refrigerant flowing out of the second condenser 62 is expanded and reduced in pressure through the second throttle valve 15, and the two are independently arranged and do not affect each other.

[0058] Furthermore, when the refrigeration system 100 is in the first mode, the switching mechanism disconnects the second heat exchange pipeline 40 , and the third circulation loop C is disconnected to avoid the refrigerant being diverted to the second heat exchange pipeline 40 and causing insufficient cooling capacity in the evaporator 14 .

[0059] In some embodiments, see Figure 1 , the switching mechanism includes a first control valve 51, a second control valve 52 and a third control valve 53. One end of the second heat exchange pipeline 40 has a connection point with the first circulation loop A. The first control valve 51 is arranged on the first circulation loop A and is located between the connection point and the evaporator 14 to control the on-off of the first circulation loop A. The second control valve 52 is arranged on the second circulation loop B to control the on-off of the second circulation loop B. The third control valve 53 is arranged on the second heat exchange pipeline 40 to control the on-off of the third circulation loop C. In this way, the three control valves can respectively control the on-off of the three circulation loops, so that the refrigeration system 100 can switch between the first mode and the second mode to meet the use requirements of high temperature conditions and low temperature conditions.

[0060] Specifically, the first control valve 51 , the second control valve 52 and the third control valve 53 are all solenoid valves, and are all connected to the controller 30 , and the controller 30 controls the on and off of each control valve.

[0061] It is conceivable that in some other embodiments, the switching mechanism can also be set in other ways. For example, in some specific embodiments, the switching mechanism includes a control valve and a three-way valve. The three-way valve is arranged at the connection point between the second heat exchange pipeline 40 and the first circulation loop A. When the first valve port of the three-way valve is connected to the second valve port, the first circulation loop A is connected, and the third circulation loop C is disconnected. When the first valve port of the three-way valve is connected to the third valve port, the first circulation loop A is disconnected and the third circulation loop C is connected. The control valve is arranged on the second circulation loop B to control the on-off of the second circulation loop B. In this way, the cooperation between the three-way valve and the control valve can also enable the refrigeration system 100 to switch between the first mode and the second mode, thereby meeting the use requirements of low temperature conditions and high temperature conditions.

[0062] In some embodiments, the refrigeration system 100 further includes a heat dissipation module, which is used to dissipate heat from the first condenser 12 to ensure stable operation of the first refrigeration module 10. Figure 1-Figure 3 , the heat dissipation module includes a second refrigeration module 60, and the second refrigeration module 60 includes a second compressor 61, a second condenser 62, a third throttle valve 63 and a first condenser 12. The second compressor 61, the second condenser 62, the third throttle valve 63 and the first condenser 12 are connected in sequence to form a heat dissipation loop D. At this time, the first condenser 12 is an evaporative condenser, that is, the first condenser 12 serves as a condenser of the first refrigeration module 10 and as an evaporator of the second refrigeration module 60. The refrigeration system 100 forms a two-stage compression cascade refrigeration system 100. When the heat dissipation loop D is working, the second compressor 61 sucks the refrigerant at the output end of the first condenser 12 and compresses the refrigerant, and the refrigerant is discharged from the output end (exhaust end) of the second compressor 61 to the second condenser 62. When the refrigerant passes through the second condenser 62, it is condensed by the second condenser 62, and is expanded and depressurized by the third throttle valve 63, and finally input into the first condenser 12 again from the input end of the first condenser 12. When the refrigerant in the second refrigeration module 60 passes through the first condenser 12, it can dissipate heat with the refrigerant in the first refrigeration module 10. The refrigerant after heat exchange enters the second compressor 61 again from the output end of the first condenser 12, and the cycle repeats.

[0063] It should be understood that in some other embodiments, the structure of the heat dissipation module is not limited. For example, the heat dissipation module may include at least two stages of second refrigeration modules stacked on top of each other, or the heat dissipation module is not a second refrigeration module, but includes a fan, and the first condenser 12 is cooled by the fan, thereby cooling the refrigerant in the first circulation loop A.

[0064] The working principle of the refrigeration system 100 provided in the specific embodiment of the present application is as follows:

[0065] See also Figure 4 , at low temperature conditions:

[0066] The controller 30 controls the first control valve 51 to open, the second control valve 52 and the third control valve 53 to close, and the first circulation loop A is connected and operated, and the heat dissipation loop D is also operated at this time to dissipate heat for the first condenser 12. The refrigerant circulates in the first circulation loop A and cools the electronic components when flowing through the evaporator 14.

[0067] See also Figure 5 , at high temperature conditions:

[0068] The controller 30 controls the first control valve 51 to be closed, the second control valve 52 and the third control valve 53 to be opened, and the second circulation loop B and the third circulation loop C are connected and operated, and the heat dissipation loop D is also operated at this time to dissipate heat for the first condenser 12. The refrigerant flows in the third circulation loop C, and exchanges heat with the coolant in the second circulation loop B in the heat exchanger 21. The coolant flows in the second circulation loop B, and when flowing through the evaporator 14, the evaporator 14 is cooled down, and the cooled evaporator 14 can cool the electronic components.

[0069] Another embodiment of the present application also provides a test sorting device, which includes a pressure head 300, a heating system 200 and the above-mentioned refrigeration system 100. The refrigeration system 100 can transfer heat to the pressure head 300 through the evaporator 14, and the refrigeration system 100 and the heating system 200 compete with each other in heat and cold to control the temperature of the pressure head 300. Specifically, the heating system 200 is arranged on the pressure head 300, and the evaporator 14 exchanges heat with the pressure head 300 through the heat-conducting medium 400. The pressure head 300 is used to press and hold electronic components. When the pressure head 300 is pressed on the electronic components, it can exchange heat with the electronic components, thereby controlling the temperature of the electronic components. Since the above-mentioned refrigeration system 100 has beneficial effects, the test sorting device including the above-mentioned refrigeration system 100 has the same beneficial effects, which will not be described in detail here.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A refrigeration system, characterized in that: include: A first refrigeration module (10) comprises a throttling mechanism, a first compressor (11), a first condenser (12) and an evaporator (14), wherein the throttling mechanism comprises a first throttling valve (13); the first compressor (11), the first condenser (12), the first throttling valve (13) and the evaporator (14) are sequentially connected to form a first circulation loop (A) for circulating a refrigerant; A cooling module (20) comprises a heat exchanger (21), a first heat exchange pipeline (22) and a liquid storage member (23), wherein the heat exchanger (21), the first heat exchange pipeline (22) and the liquid storage member (23) are connected to form a second circulation loop (B) for circulating a cooling liquid; A cold source (70), the second circulation loop (B) and the cold source (70) can exchange heat through the heat exchanger (21), the cold source (70) can cool the coolant in the second circulation loop (B), and the second circulation loop (B) cools the evaporator (14) through the first heat exchange pipeline (22); A switching mechanism, wherein the refrigeration system switches between a first mode and a second mode through the switching mechanism; when the refrigeration system is in the first mode, the first circulation loop (A) is connected and the second circulation loop (B) is disconnected; when the refrigeration system is in the second mode, the second circulation loop (B) is connected and the first circulation loop (A) is disconnected.

2. The refrigeration system according to claim 1, characterized in that: The refrigeration system further comprises a second heat exchange pipeline (40), wherein the second heat exchange pipeline (40) is arranged between the output end of the first condenser (12) and the input end of the first compressor (11); When the refrigeration system is in the second mode, the switching mechanism disconnects the first condenser (12) from the evaporator (14), connects the second heat exchange pipeline (40), and the first compressor (11), the first condenser (12) and the second heat exchange pipeline (40) are located on a third circulation loop (C) for circulating refrigerant; The third circulation loop (C) forms the cold source (70), and the refrigerant in the second heat exchange pipeline (40) is expanded and depressurized by the throttling mechanism and then flows through the heat exchanger (21) to exchange heat with the cooling liquid.

3. The refrigeration system according to claim 2, characterized in that: When the refrigeration system is in the first mode, the switching mechanism disconnects the second heat exchange pipeline (40).

4. The refrigeration system according to claim 2, characterized in that: The second heat exchange pipeline (40) is connected to the output end of the first condenser (12) through the first throttle valve (13), the third circulation loop (C) comprises the first compressor (11), the first condenser (12), the first throttle valve (13) and the second heat exchange pipeline (40) which are connected in sequence, and the refrigerant in the second heat exchange pipeline (40) is expanded and depressurized through the first throttle valve (13) and then flows through the heat exchanger (21); or The throttling mechanism also includes a second throttling valve (15); the second heat exchange pipeline (40) is directly connected to the output end of the first condenser (12); the second throttling valve (15) is arranged on the second heat exchange pipeline (40); the third circulation loop (C) includes the first compressor (11), the first condenser (12), the second throttling valve (15) and the second heat exchange pipeline (40) which are connected in sequence; the refrigerant in the second heat exchange pipeline (40) is expanded and reduced in pressure through the second throttling valve (15) and then flows through the heat exchanger (21).

5. The refrigeration system according to claim 2, characterized in that: The switching mechanism comprises: a first control valve (51), wherein the second heat exchange pipeline (40) and the first circulation loop (A) have a connection point, and the first control valve (51) is provided on the first circulation loop (A) and located between the connection point and the evaporator (14) to control the on / off of the first circulation loop (A); A second control valve (52) is provided on the second circulation loop (B) to control the on-off of the second circulation loop (B); The third control valve (53) is arranged on the second heat exchange pipeline (40) to control the on-off of the third circulation loop (C).

6. The refrigeration system according to claim 1, characterized in that: The coolant is high temperature resistant fluorinated liquid or heat transfer oil.

7. The refrigeration system according to claim 1, characterized in that: The cooling module (20) further comprises a power pump (24), wherein the power pump (24) is arranged on the second circulation loop (B) to provide flow force for the coolant to flow in the second circulation loop (B).

8. The refrigeration system according to claim 1, characterized in that: The refrigeration system also includes a heat dissipation module for dissipating heat from the first condenser (12).

9. The refrigeration system according to claim 8, characterized in that: The heat dissipation module comprises a second refrigeration module (60), the second refrigeration module (60) comprises a second compressor (61), a second condenser (62), a third throttle valve (63) and the first condenser (12), the second compressor (61), the second condenser (62), the third throttle valve (63) and the first condenser (12) are connected in sequence to form a heat dissipation circuit (D).

10. A test sorting device, characterized in that: The testing and sorting equipment comprises a pressing head (300), a heating system (200) and a refrigeration system as described in any one of claims 1 to 9, wherein the refrigeration system is capable of transferring heat to the pressing head (300) through an evaporator (14), and the refrigeration system and the heating system (200) counteract each other in heat and cold to control the temperature of the pressing head (300).

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