TW201711559A - Refrigerant cooling system of temperature control device for test equipment crimper whereby the compressor of a refrigerant cooling system can be operated in a normal operating temperature range so as to avoid the occurrence of thermal trip - Google Patents

Abstract

A refrigerant cooling system of temperature control device for test equipment crimper is disclosed. The crimper is provided with a pressing bar driven by a driving source, and a pressing block provided under the pressing bar for pressing an electronic device. The temperature control device is provided with a thermostat and a temperature sensor arranged on the pressing block, and an evaporator of a refrigerant cooling system arranged above the thermostat. The refrigerant cooling system is provided with a first delivery pipe at the output end of the evaporator, which is connected to the input end of the compressor for conveying the high-temperature refrigerant that has absorbed heat to the compressor. The input end of the evaporator is provided with a second delivery pipe connected to the output end of the compressor, the condenser and the expander for conveying the low-temperature refrigerant that has been condensed to the evaporator, wherein there is a connecting pipe connected between the first delivery pipe and the second delivery pipe so that part of the low-temperature refrigerant in the second delivery pipe can be conveyed to the first delivery pipe through the connecting pipe and mixed with the high-temperature refrigerant in the first delivery pipe for being cooled down, which is then conveyed to the compressor for compression. Accordingly, the compressor of the refrigerant cooling system can be operated in a normal operating temperature range, so as to avoid the occurrence of thermal trip thereby achieving practical benefits of smoothly performing test jobs and increasing the service life of the compressor.

Description

Refrigerant cooling system for temperature control device of test equipment crimper

In particular, the present invention provides a test equipment crimping device which ensures that the compressor of the refrigerant heat dissipation system is maintained in a normal operating temperature range to avoid thermal tripping, and can smoothly perform test operations and improve compressor service life. The refrigerant cooling system of the temperature control device of the device.

Press, the test operation of the electronic components is tested within a preset test temperature range. When the temperature of the electronic component is lower than the preset test temperature range, the crimper must heat the electronic component when the electronic component When the temperature is higher than the preset test temperature range, the crimper must cool the electronic component to keep the temperature of the electronic component within the preset test temperature range. In order to enable the crimper to heat or cool the electronic component, a thermostat (such as a heater chip or a refrigerant chip) is attached to the crimper, and a heat sink is installed above the thermostat ( Such as cooling water channels or heat sink fins, while the thermostat heats the electronic components, the heat sink cools the electronic components; but because of the heat sink (such as cooling water channels or heat sink fins) on the electronic components The cooling effect and speed are slow, and the efficiency of temperature control is not good. In order to improve the cooling effect and speed of electronic components, the refrigerant heat dissipation system is widely used in the heating or cooling of the crimper.

Please refer to FIG. 1 , which is a schematic diagram of a test area 10 and a crimper 20 of a test device. The test area 10 is provided with at least one circuit board 11 of the test socket 12 and is crimped over the test area 10 . The device 20 is provided with a driving lowering lever 21 driven by a driving source, and a lower pressing block 2 is disposed below the lower pressing rod 21 2. When the electronic component 13 performs a test operation, the pressing bar 21 will be driven down by the driving source, and the lower pressing block 22 is pressed against the surface of the electronic component 13 so that the electrical contacts of the electronic component 13 are ensured. Contact the electrical contacts of the test stand 12 for smooth test operation. Referring to Figures 2, 3, and 4, the temperature control device of the crimper includes a heating piece 23 and a refrigerant heat dissipation system 24, and the heating piece 23 is connected to the upper surface of the lower pressing block 22 to The electronic component 13 is heated, and the refrigerant heat dissipation system 24 is provided with an evaporator 241 connected to the upper surface of the heating piece 23, and the lower pressing rod 21 is coupled to the top surface of the evaporator 241 to make the pressing The rod 21 can drive the lower pressing block 22 and the heating piece 23 to rise and fall via the evaporator 241, and the first conveying pipe 245 connected to the input end of the compressor 242 is disposed at the output end of the evaporator 241 for high temperature. The refrigerant is delivered to the compressor 242, and the input end of the evaporator 241 is provided with a second delivery pipe 246 that is connected to the output of the compressor 242, the condenser 243, and the expander 244, so that the delivery has been condensed and expanded in the condenser 243. The low temperature refrigerant acting on the 244 absorbs heat into the evaporator 241; after the test socket 12 carries the electronic component 13 to be tested, the lower pressing rod 21 can be controlled to lower the lower pressing block 22, and the lower pressing block 22 is pressed against the contact. Performing a test operation by measuring the electronic component 13 if the temperature of the electronic component 13 to be tested is lower than When the test temperature range is set, the lower pressing block 22 is heated by the heating piece 23 of the temperature control device, and the electronic component 13 is heated by the conduction of the lower pressing block 22; see Figures 5 and 6, If the temperature of the electronic component 13 to be tested is higher than the preset test temperature range, the heating sheet 23 is stopped from operating or the output power is reduced, and the refrigerant in the evaporator 241 of the refrigerant heat dissipation system 24 is used to absorb heat. A delivery pipe 245 delivers the heat-absorbing high-temperature refrigerant to the compressor 242, compresses it by the compressor 242, and outputs the compressed high-temperature refrigerant to the condenser 243 and the expander 244 via the second transfer pipe 246, and finally The low temperature refrigerant is sent to the evaporator 241 to absorb heat, and the refrigerant is circulated by the refrigerant heat dissipation system 24 to the lower pressing block 22 and the heating piece. The heat dissipation is performed, and the electronic component 13 is cooled by the conduction of the lower pressing block 22, so that the electronic component 13 is maintained within a preset test temperature range; however, the temperature control device using the refrigerant heat dissipation system 24 can be quickly The reaction is controlled by temperature, but it still has the following drawbacks in its use:

1. The refrigerant in the evaporator 241 of the refrigerant heat dissipation system 24 is heated to a high temperature state, and the high temperature refrigerant is directly sent to the compressor 242 via the first delivery pipe 245 for compression. However, the compressor 242 must be maintained at a normal operating temperature. In the range of (between 60 ° C and 80 ° C), smooth operation can be performed; however, when the low temperature refrigerant is supplied to the evaporator 241, a large amount of heat is absorbed, and the high temperature refrigerant is directly sent to the compressor 242 for compression, which will cause the compressor 242 to be compressed. The working temperature exceeds the normal operating temperature range, which is liable to cause a thermal trip condition, which causes the compressor 242 to stop running, thereby affecting the test operation.

2. The high-temperature refrigerant outputted from the evaporator 241 of the refrigerant heat dissipation system 24 is directly sent to the compressor 242 via the first delivery pipe 245 for compression, which not only causes thermal tripping, but also easily causes damage to the compressor 242, thereby affecting the compressor. The service life of 242.

In view of this, the inventor has been engaged in research and development and production experience of related industries for many years, and has conducted in-depth research on the problems currently faced. After long-term efforts and trials, he finally developed a temperature control device for testing equipment crimpers. The refrigerant cooling system is effective to improve the shortcomings of the prior art, which is the design tenet of the present invention.

A first object of the present invention is to provide a refrigerant heat dissipation system for a temperature control device of a test equipment crimper, wherein the crimper is provided with a driving source for driving the lower and lower pressing rods, and is installed under the lower pressing rod. Pressing the pressure block under the electronic component, the temperature control device is provided with a temperature regulator and a temperature sensor in the lower pressure block, and an evaporator of a refrigerant heat dissipation system is installed above the temperature regulator, the refrigerant The heat dissipation system is provided at the output end of the evaporator a first delivery pipe connected to the input end of the compressor to deliver the endothermic high temperature refrigerant to the compressor, the input end of the evaporator being provided with a second delivery to the compressor output, the condenser and the expander a tube for conveying the condensed low-temperature refrigerant to the evaporator, wherein a communication pipe is connected between the first conveying pipe and the second conveying pipe, so that a part of the low-temperature refrigerant in the second conveying pipe is conveyed through the connecting pipe And the first conveying pipe is mixed with the high-temperature refrigerant in the first conveying pipe to cool down, and then sent to the compressor for compression; thereby ensuring that the compressor of the refrigerant cooling system is maintained in a normal operating temperature range, Avoid the occurrence of thermal tripping, and achieve the practical benefits of ensuring smooth test operations.

A second object of the present invention is to provide a refrigerant heat dissipation system for a temperature control device of a test device crimper, wherein a refrigerant heat dissipation system of the temperature control device is a first transfer pipe at an output end of the evaporator and the evaporator A communication pipe is disposed between the second conveying pipes at the output end, so that a part of the low-temperature refrigerant in the second conveying pipe is sent to the first conveying pipe through the connecting pipe, and is mixed with the high-temperature refrigerant in the first conveying pipe to cool down, and then It is sent to the compressor for compression to ensure that the compressor of the refrigerant cooling system is maintained within the normal operating temperature range, and the utility of the compressor life is improved.

Conventional part:

10‧‧‧Test area

11‧‧‧ boards

12‧‧‧ test seat

13‧‧‧Electronic components

20‧‧‧Crimper

21‧‧‧ Down bar

22‧‧‧ Lower press block

23‧‧‧ heating film

24‧‧‧Refrigerant cooling system

241‧‧‧Evaporator

242‧‧‧Compressor

243‧‧‧Condenser

244‧‧‧Expander

245‧‧‧First duct

246‧‧‧Second delivery tube

Part of the invention:

30‧‧‧Test area

31‧‧‧ boards

32‧‧‧ test seat

33‧‧‧Electronic components

40‧‧‧Crimper

41‧‧‧lower bar

42‧‧‧ Lower press block

43‧‧‧ thermostat

44‧‧‧temperature sensor

441‧‧‧Flexible parts

45‧‧‧Refrigerant cooling system

451‧‧‧Evaporator

452‧‧‧Compressor

453‧‧‧Condenser

454‧‧‧Expander

455‧‧‧First duct

456‧‧‧Second delivery tube

457‧‧‧Connected pipe

458‧‧‧Opening controller

459‧‧‧Refrigerant Thermostat

A‧‧‧Steps

B‧‧‧Steps

C‧‧‧Steps

D‧‧‧Steps

E‧‧‧ steps

F‧‧‧Steps

G‧‧‧Steps

Figure 1: Schematic diagram of the test area and crimper of the conventional test equipment.

Figure 2: Schematic diagram of the conventional crimper.

Figure 3: Schematic diagram of the heating operation of the conventional crimper.

Figure 4: Schematic diagram of the structure of a conventional refrigerant cooling system.

Figure 5: Schematic diagram of the heat dissipation of the conventional crimper.

Figure 6: Schematic diagram of the refrigerant circulation of the refrigerant cooling system.

Figure 7: Schematic diagram of the test area and crimper of the test apparatus of the present invention.

Figure 8 is an exploded perspective view of the crimper of the present invention.

Figure 9 is a schematic view showing the combined appearance of the crimper of the present invention.

Figure 10 is a schematic cross-sectional view of the crimper of the present invention.

Figure 11 is a schematic view showing the structure of a refrigerant heat dissipation system according to a first embodiment of the present invention.

Figure 12: Schematic diagram of the temperature control method of the present invention.

Figure 13 is a schematic view showing the heating of the electronic component by the crimper of the present invention.

Figure 14: Schematic diagram of the cooling of the electronic component of the crimping device of the present invention.

Fig. 15 is a view showing the refrigerant circulating flow of the refrigerant heat dissipation system of the first embodiment of the present invention.

Figure 16 is a schematic view showing the structure of a refrigerant heat dissipation system according to a second embodiment of the present invention.

In order to make the present invention further understand the present invention, the preferred embodiment and the drawings are described in detail as follows: Referring to FIG. 7, the test area 30 of the test apparatus of the present invention is provided with at least one. The circuit board 31 has a test stand 32, and the crimper 40 of the test device located above the test area 30 is provided with at least one of the lower and lower pressing rods 41 that can be driven by the driving source, and is mounted under the lower pressing rod 41. The pressing block 42 drives the lower pressing rod 41 to descend by a driving source when the electronic component 33 performs a test operation, and presses the lower pressing block 42 against the surface of the electronic component 33 to electrically connect the electronic component 33. Make sure to touch the electrical contacts of the test socket 32 to perform the test smoothly.

Referring to Figures 8, 9, 10, and 11, the press block 42 under the crimping device of the test apparatus of the present invention is made of a material having a high heat transfer coefficient, and can quickly conduct a temperature when crimping electronic components. The temperature control device of the crimper includes a temperature regulator 43 , a temperature sensor 44 , and a refrigerant heat dissipation system 45 . The temperature regulator 43 is mounted on the lower pressure block 42 . The 43 series can be a heating sheet or a cooling chip. In the embodiment, the temperature regulator 43 is a heating sheet; and the temperature sensor 44 for sensing the temperature of the electronic component can be driven by the supporting frame to contact the electronic component, or The lower pressing block 42 is mounted on the lower pressing block 42 to drive the electronic component. In the embodiment, the temperature sensor 44 is mounted on the lower pressing block 42 and is provided with an elastic member 4. 41 is abutted against the top, and protrudes below the lower pressing block 42 in an elastically stretchable manner to sense the temperature of the electronic component; the refrigerant cooling system 45 of the first embodiment of the present invention is provided with a connection device for the temperature adjustment The evaporator 451 on the upper surface of the upper portion of the evaporator 43 is connected to the lower pressing rod 41, so that the lower pressing rod 41 can drive the lower pressing block 42 and the temperature regulating unit 43 to rise and fall via the evaporator 451. At the output end of the evaporator 451, a first conveying pipe 455 connected to the input end of the compressor 452 is provided for conveying the heat-absorbing high-temperature refrigerant to the compressor 452, and the input end of the evaporator 451 is connected. The second delivery pipe 456 to the output end of the compressor 452, the condenser 453 and the expander 454 to transport the condensed low-temperature refrigerant to the evaporator 451 for heat absorption, and between the first delivery pipe 455 and the second delivery pipe 456 A communication pipe 457 is connected to connect a portion of the low temperature refrigerant in the second pipe 456 to the first pipe 455 via the communication pipe 457, and is cooled and mixed with the high temperature refrigerant in the first pipe 455. And then sent to the compressor 452 for compression.

Referring to Figures 12 and 13, the temperature control method of the temperature control device of the present invention first performs step A, which is performed by the lower pressing rod 41 driving the lower pressing block 42 to press down the electronic component 33 to perform the test of the electronic component 33. Next, step B is performed, the temperature sensor 44 senses the temperature of the electronic component 33; then step C is performed to determine whether the temperature of the electronic component 33 is within a preset test temperature range, such as the temperature of the electronic component 33 is When the preset test temperature range is within, the normal mode of step D is performed, and the so-called normal mode thermostat 43 and the refrigerant heat dissipation system 45 are all stopped or the outputs of the thermostat 43 and the refrigerant heat dissipation system 45 are stopped. The power is balanced within a preset test temperature range; if the temperature of the electronic component 33 is not within the preset test temperature range, step E is performed to determine whether the temperature of the electronic component 33 is lower than a preset test temperature range. If the electronic component 33 is lower than the preset test temperature range, the heating mode of step F is performed, and the so-called heating mode is that the refrigerant heat dissipation system 45 stops not operating or outputs at a low power, and starts or Plus thermostat input 43 The power is output so that the thermostat 43 heats the electronic component 33 to a preset test temperature range.

Please refer to the figures 12, 14, and 15. Otherwise, if it is determined in step E that the temperature of the electronic component 33 exceeds the preset test temperature range, the cooling mode of step G is performed, and the so-called cooling mode is the thermostat 43. Stopping or reducing the output power, and starting or increasing the output power of the refrigerant heat dissipation system 45, while the second delivery pipe 456 delivers the low temperature refrigerant to the evaporator 451 for heat absorption, and the output end of the evaporator 451 is firstly delivered. The tube 455 transports the high-temperature refrigerant to the compressor 452, and the refrigerant circulating through the refrigerant heat-dissipating system 45 passes through the conduction of the lower pressing block 42 to cool the electronic component 33, so that the electronic component 33 is maintained within a preset test temperature range; In particular, the refrigerant heat dissipation system 45 of the first embodiment of the present invention is provided with a communication pipe 457 between the first delivery pipe 455 and the second delivery pipe 456. Therefore, when the low temperature refrigerant is conveyed via the second delivery pipe 456, a portion of the low temperature refrigerant in the second transfer pipe 456 can be transported into the first transfer pipe 455 via the communication pipe 457, and mixed with the high temperature refrigerant in the first transfer pipe 455 to cool down, and then It is sent to the compressor 452 for compression, and the compressor 452 of the refrigerant heat dissipation system 45 is maintained to operate within a normal operating temperature range to avoid thermal tripping, thereby ensuring smooth test operation and lifting the compressor. 452 life.

Referring to FIG. 16, the refrigerant heat dissipation system 45 of the second embodiment of the temperature control device of the present invention is different from the first embodiment in that the communication tube 457 of the refrigerant heat dissipation system 45 is connected to be provided with a solenoid valve. Opening and closing controller 458, and providing a refrigerant temperature sensor 459 to the first conveying pipe 455 to sense the temperature of the refrigerant in the first conveying pipe 455, and sensing the refrigerant in the first conveying pipe 455 according to the sensing The temperature is controlled to open and close the opening and closing controller 458, that is, when the refrigerant temperature sensor 459 senses that the temperature of the refrigerant in the first conveying pipe 455 is lower than a preset temperature. When the range is controlled, the opening and closing controller 458 is controlled to be closed, so that the low temperature refrigerant in the second conveying pipe 456 is stopped from being transported into the first conveying pipe 455, and when the refrigerant temperature sensor 459 senses the first conveying pipe When the temperature of the refrigerant in the 455 is higher than the preset temperature range, the opening and closing controller 458 is controlled to be opened, and a part of the low temperature refrigerant in the second conveying pipe 456 is sent to the first conveying pipe 455 via the connecting pipe 457. And mixing with the high-temperature refrigerant in the first transfer pipe 455 to cool down, and then sent to the compressor 452 for compression, the same ensures that the compressor 452 of the refrigerant heat dissipation system 45 is maintained within the normal operating temperature range to avoid A thermal trip condition is created to ensure a smooth test run and increase the life of the compressor 452.

Accordingly, the present invention is a practical and progressive design, but it has not been disclosed that the same products and publications are disclosed, thereby permitting the invention patent application requirements, and applying in accordance with the law.

45‧‧‧Refrigerant cooling system

451‧‧‧Evaporator

452‧‧‧Compressor

453‧‧‧Condenser

454‧‧‧Expander

455‧‧‧First duct

456‧‧‧Second delivery tube

457‧‧‧Connected pipe

Claims (8)

A refrigerant heat dissipation system for testing a temperature control device of a device crimper, wherein the crimper is provided with at least one pressure driving rod driven by a driving source, and a lower pressing electronic component is disposed under the lower pressing rod a pressure block, the temperature control device is provided with a temperature regulator and a temperature sensor in the lower pressure block, and an evaporator of a refrigerant heat dissipation system is installed above the temperature regulator; wherein the refrigerant heat dissipation system is The output end of the evaporator is provided with a first conveying pipe connected to the input end of the compressor to deliver high-temperature refrigerant to the compressor, and the input end of the evaporator is provided with the compressor output end, the condenser and the expander. a second conveying pipe for conveying the low-temperature refrigerant to the evaporator, and a communication pipe connected between the first conveying pipe and the second conveying pipe, so that a part of the low-temperature refrigerant in the second conveying pipe passes through the communication The tube is delivered to the first delivery tube for mixing with the high temperature refrigerant in the first delivery tube to cool down. The refrigerant heat dissipation system of the temperature control device of the test device crimper according to the first aspect of the patent application, wherein the temperature sensor of the temperature control device is driven by a support frame to contact the electronic component to sense the electronic device. The temperature of the component. The refrigerant heat dissipation system of the temperature control device of the test equipment crimper according to the first aspect of the patent application, wherein the temperature control device of the temperature control device is mounted on the lower pressure block, and the lower pressure block is The electronic component is brought into contact to sense the temperature of the electronic component. The refrigerant heat dissipation system of the temperature control device of the test equipment crimper according to the third aspect of the patent application, wherein the temperature sensor is abutted by an elastic member, and the elastic protrusion protrudes below the lower pressure block. To sense the temperature of the electronic component. The refrigerant heat dissipation system of the temperature control device of the test equipment crimper according to the first aspect of the patent application, wherein the temperature controller of the temperature control device is a heating sheet or a cooling chip. According to the temperature control device of the test equipment crimper described in claim 1 of the patent application scope The refrigerant heat dissipation system, wherein the communication pipe of the refrigerant heat dissipation system is connected with an opening and closing controller. The refrigerant heat dissipation system of the temperature control device of the test equipment crimper according to the sixth aspect of the patent application, wherein the refrigerant heat dissipation system is provided with a refrigerant temperature sensor in the first transmission pipe to sense the first The temperature of the refrigerant in the conveying pipe is controlled to open and close the opening and closing controller according to the temperature of the refrigerant in the first conveying pipe. The refrigerant heat dissipation system of the temperature control device of the test equipment crimper according to the seventh aspect of the patent application, wherein the refrigerant heat dissipation system is a solenoid valve.