Blowing device and test sorting machine

Abstract

The utility model relates to an air blowing device and a test sorting machine, the air blowing device comprises a heat exchanger, an air heater, a first air blowing assembly, a second air blowing assembly, a switching valve group, a first control valve and a second control valve, and the heat exchanger is used for communicating an air source and a refrigerant machine, so that air provided by the air source exchanges heat with refrigerant provided by the refrigerant machine. The first air blowing assembly and the second air blowing assembly are both used for blowing air outwards, and the first air blowing assembly communicates with an air outlet of the air heater. And the switching valve group communicates with the gas outlet of the heat exchanger, and selectively allows the gas subjected to heat exchange to flow towards the air inlet for air heating or the second blowing assembly. One end of the first control valve communicates with an air source, and the other end communicates with an air inlet of the air heater. One end of the second control valve is communicated with an air source, and the other end is communicated with an air inlet of the second blowing assembly. And when the first control valve is different from the switching valve group, the air is allowed to flow to the air inlet of the air heater. According to the technical scheme, the working efficiency of the test sorting machine can be improved, and the service life of the test sorting machine can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of detection technology, and in particular to an air blowing device and a testing and sorting machine. Background Art

[0002] The test sorter can test the performance of semiconductor devices under specified temperature environments such as high temperature, low temperature and normal temperature. At present, most test sorters use a blowing device that can blow cold air and hot air to blow gas to the test station located in the test sorter cavity to provide the semiconductor device set at the test station with the corresponding test temperature.

[0003] In the related art, the air blowing device includes a heat exchanger and an air heater, and the heat exchanger is used to exchange heat between the refrigerant provided by the refrigerant machine and the gas. Under low temperature conditions, the refrigerant machine starts and can provide refrigerant for cooling the gas into the heat exchanger. The cooling gas flowing out of the heat exchanger flows through the air heater (not started) and is then discharged. Under medium and high temperature conditions, the refrigerant machine stops, and the gas flows through the air heater for heating and then is discharged. In this solution, the refrigerant machine needs to be started and stopped repeatedly, and it takes 10 minutes or even longer from the start of the refrigerant machine to the cooling gas with a stable temperature flowing out of the heat exchanger, which seriously affects the working efficiency of the test sorting machine. Utility Model Content

[0004] Based on this, it is necessary to provide an air blowing device and a test sorting machine to address the problem that when the air blowing device is in use, the refrigerant machine needs to be repeatedly started and stopped, resulting in low working efficiency of the test sorting machine.

[0005] A blowing device, used in conjunction with an air source and a refrigerant machine, comprising:

[0006] A heat exchanger, used to connect the gas source and the refrigerant machine so as to exchange heat between the gas provided by the gas source and the refrigerant provided by the refrigerant machine;

[0007] Air heater;

[0008] a first air blowing assembly and a second air blowing assembly, both for blowing air outwards, wherein the first air blowing assembly is communicated with an air outlet of the air heater;

[0009] a switching valve group, which is in communication with the gas outlet of the heat exchanger and can selectively allow the heat-exchanged gas to flow toward the air inlet of the air heater or the second air blowing assembly;

[0010] A first control valve, one end of which is connected to the air source and the other end of which is connected to the air inlet of the air heater; and

[0011] A second control valve, one end of which is connected to the air source and the other end of which is connected to the air inlet of the second blowing assembly;

[0012] Wherein, the first control valve and the switching valve group do not allow gas to flow to the air inlet of the air heater at the same time.

[0013] In some embodiments, the switching valve group includes a first valve body and a second valve body, the first valve body is connected between the gas outlet of the heat exchanger and the air inlet of the air heater, and the second valve body is connected between the gas outlet of the heat exchanger and the second blowing assembly;

[0014] The first valve body and the second valve body are not in a conducting state at the same time.

[0015] In some embodiments, the blowing device further comprises a third control valve, one end of which is used to connect to the gas source, and the other end of which is used to connect to the gas inlet of the heat exchanger.

[0016] In some embodiments, the first air blowing assembly includes a test mounting seat and at least one air distribution block, the test mounting seat is used to mount the electronic device to be tested, and is provided with at least one first air blowing portion for blowing air;

[0017] The air heater comprises at least one air outlet, and each air outlet of the air heater is independently connected to each first air blowing part via the air dividing block;

[0018] A temperature sensor is arranged on each of the gas distribution blocks.

[0019] In some embodiments, the second blowing assembly includes two groups of second blowing parts spaced apart in the height direction;

[0020] The two groups of second blowing parts blow air in opposite directions in the height direction.

[0021] In some embodiments, among the two groups of second air blowing parts, one group of the second air blowing parts comprises an air blowing block, and the air blowing block is provided with a plurality of air blowing holes for supplying air in the same direction;

[0022] Another group of the second blowing parts includes a blowing rod, and a plurality of blowing holes for supplying air in the same direction are arranged at intervals along the longitudinal direction of the blowing rod.

[0023] In some embodiments, the second blowing assembly includes a main pipeline and at least two branch pipelines, the switching valve group can allow gas to flow to the main pipeline, and each branch pipeline independently connects the main pipeline with each group of the second blowing parts;

[0024] A temperature collector is arranged on the main pipeline.

[0025] In some embodiments, the blowing device includes an air intake pipeline, a regulating valve and a temperature collection component, and the first control valve and the switching valve group are both connected to the air intake of the air heater through the air intake pipeline;

[0026] The temperature collecting component is used to collect the temperature of the gas heated by the air heater. The regulating valve is arranged on the air intake pipeline and can adjust the gas flow of the air intake pipeline according to the temperature collected by the temperature collecting component.

[0027] In some embodiments, the blowing device has a first working state and a second working state;

[0028] When in the first working state, the first control valve cuts off the connection between the air source and the air heater, the switching valve group connects the air heater and the heat exchanger, the second control valve connects the air source and the second blowing assembly, and the air heater is in a heating state;

[0029] When in the second working state, the first control valve connects the air source and the air heater, the switching valve group connects the heat exchanger and the second blowing component, the second control valve connects the air source and the second blowing component, and the air heater is in a heating state.

[0030] A test sorting machine comprises a feeding device, a testing device, a receiving device and a conveying device, wherein the testing device has a cavity, the cavity has a testing station, the conveying device is used to move the electronic devices to be tested provided by the feeding device to the testing station, and is used to move the electronic devices tested at the testing station to the receiving device for recycling, and the test sorting machine also comprises:

[0031] In the air blowing device as described in any of the above embodiments, the first air blowing component is used for blowing air toward the test station, and the second air blowing component is used for blowing air toward the cavity.

[0032] In some embodiments, the test sorting machine further includes a refrigerant machine, which is connected to the heat exchanger and is used to transport refrigerant to the heat exchanger.

[0033] When the above-mentioned air blowing device and test sorting machine are switched between normal high temperature test conditions and low temperature test conditions, the refrigerant machine can keep working without repeated start and stop, which helps to improve the working efficiency of the test sorting machine. Moreover, under normal high temperature test conditions, the low temperature refrigerant flowing out of the heat exchanger is used to cool the cavity, and then other components located in the cavity can be cooled, which helps to increase the service life of the test sorting machine, killing two birds with one stone. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0035] Figure 1 A schematic diagram of a system of an air blowing device according to some embodiments of the present application;

[0036] Figure 2 A schematic diagram of gas flow of the blowing device in some embodiments of the present application under low temperature test conditions;

[0037] Figure 3 A schematic diagram of gas flow direction of the blowing device in some embodiments of the present application under high temperature test conditions;

[0038] Figure 4 A schematic diagram of the structure of the blowing device in some embodiments of the present application;

[0039] Figure 5 for Figure 4 A schematic diagram of a local structure of the blowing device shown;

[0040] Figure 6 for Figure 4 A schematic structural diagram of a first blowing assembly in the blowing device shown;

[0041] Figure 7 This is a schematic diagram of the structure of a test sorting machine according to some embodiments of the present application.

[0042] The reference numerals in the specific implementation manner are as follows:

[0043] 1000, test sorting machine; 200, cavity; 201, test station; 300, gas source; Z, height direction; 100, blowing device; 10, heat exchanger; 11, gas interface; 12, refrigerant interface; 20, air heater; 21, air inlet pipeline; 22, regulating valve; 23, temperature collection component; 24, three-way connector; 30, switching valve group; 31, first valve body; 32, second valve body; 60, first control valve; 70, second control valve; 71, air inlet interface; 80, third control valve; 90, temperature collector; 40, first blowing assembly; 41, test mounting seat; 41a, positioning part; 42, first blowing part; 43, gas distributor block; 50, second blowing assembly; 51, second blowing part; 51a, blowing rod; 51b, blowing block; 52, main pipeline; 53, branch pipeline. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application 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 present application. However, the present application 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 present application, so the present application is not limited by the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships, if any, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0046] In addition, if present, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, if any, 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 this application can be understood according to specific circumstances.

[0048] In the present application, if it appears, unless otherwise clearly specified and limited, a first feature “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 “above”, “above” and “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 “below”, “below” and “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.

[0049] It should be noted that, if present, 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.

[0050] In order to solve the problem that when the air blowing device is in use, the refrigerant machine needs to be repeatedly started and stopped, resulting in low working efficiency of the test sorting machine and not utilizing the service life of the internal components of the test sorting machine, the embodiment of the present application proposes an air blowing device and a test sorting machine.

[0051] The test sorting machine involved in the embodiment of the present application includes the above-mentioned blowing device, and generally also includes a loading device, a testing device, a receiving device and a conveying device. The testing device includes a cavity, and the cavity has a testing station. The conveying device is used to move the electronic devices to be tested provided by the loading device to the testing station, and to move the electronic devices tested at the testing station to the receiving device for recovery.

[0052] The loading device is used to load the electronic devices to be tested onto itself, and the loading device may include a loading conveyor belt, a loading receiving platform, etc. The collecting device is used to recycle the electronic devices after testing, and the collecting device may include a recycling box, a recycling tray, a recycling belt, etc. The conveying device is used to realize the transfer of electronic devices between the loading device and the testing station, and between the testing station and the recycling device. The conveying device may include a conveying manipulator, etc.

[0053] The air blowing device is used to blow air into the cavity so as to create a test environment of the target temperature in the cavity. A test station is usually set in the cavity, and the electronic device to be tested can be placed at the test station. The air blowing device can blow air into the test station to provide the test temperature. The electronic device to be tested can be but is not limited to semiconductor devices such as chips. In addition, the test device usually also includes a test module, which is used to perform performance tests on the electronic device to be tested. The test module can be a pressure test module, a current and voltage test module, etc. Usually, the test sorting machine can provide three temperature environments, such as low temperature, normal temperature, and high temperature, to the electronic device to be tested. The three temperature environments can all be provided by the air blowing device, or other temperature control devices can be added to assist in achieving them.

[0054] The blowing device of the embodiment of the present application is described in detail below.

[0055] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The blowing device 100 provided in the embodiment of the present application is used in conjunction with the gas source 300 and the refrigerant machine. The blowing device 100 includes a heat exchanger 10, an air heater 20, a first blowing assembly 40, a second blowing assembly 50, a switching valve group 30, a first control valve 60 and a second control valve 70. The heat exchanger 10 is used to connect the gas source 300 and the refrigerant machine so that the gas provided by the gas source 300 and the refrigerant provided by the refrigerant machine can exchange heat. The first blowing assembly 40 and the second blowing assembly 50 are both used to blow air outward, and the first blowing assembly 40 is connected to the air outlet of the air heater 20. The switching valve group 30 is connected to the gas outlet of the heat exchanger 10, and can selectively allow the gas after heat exchange to flow to the air inlet of the air heater 20 or the second blowing assembly 50. One end of the first control valve 60 is used to connect the gas source 300, and the other end is connected to the air inlet of the air heater 20. One end of the second control valve 70 is connected to the gas source 300, and the other end is connected to the air inlet of the second blowing assembly 50. The first control valve 60 and the switching valve group 30 do not allow the gas to flow to the air inlet of the air heater 20 at the same time.

[0056] The gas source 300 may be, but is not limited to, an air compressor, which usually provides gas. A refrigerant machine is usually used to provide low-temperature refrigerant. When the low-temperature refrigerant and gas pass through the heat exchanger 10, the low-temperature refrigerant cools the gas, so that the gas outlet of the heat exchanger 10 flows out low-temperature gas.

[0057] The heat exchanger 10 is used to connect the gas source 300 and the refrigerant machine so that the gas provided by the gas source 300 exchanges heat with the refrigerant provided by the refrigerant machine. There are many specific forms of the heat exchanger 10, and the heat exchanger 10 can be a plate heat exchanger 10, a shell heat exchanger 10, etc. For example, the heat exchanger 10 has an independent first flow path and a second flow path. The first flow path is used to communicate with the refrigerant machine to circulate the refrigerant, and the second circuit is connected to the gas source 300 to circulate the gas. The gas outlet of the heat exchanger 10 is an outlet connected to the gas source 300 through the second flow path. It can be understood that the heat exchanger 10 is provided with a gas interface 11 for connecting to the gas source 300 and a refrigerant interface 12 for connecting to the refrigerant machine.

[0058] The air heater 20 can heat the gas flowing through it, and its internal heating element may be, but is not limited to, a resistance heating wire, a resistance heating plate, an infrared heating element, etc. The air outlet of the air heater 20 is connected to the air inlet of the first blowing assembly 40 .

[0059] The air inlet of the switching valve group 30 is connected to the gas outlet of the heat exchanger 10, and the gas after heat exchange with the refrigerant in the heat exchanger 10 can flow into the switching valve group 30. It can be understood that the switching valve group 30 includes two air outlets, one of which is connected to the air inlet of the air heater 20, and the other air outlet is connected to the air inlet of the second blowing assembly 50. The switching valve group 30 can selectively connect its own air inlet to one of its two air outlets to allow the low-temperature gas flowing out of the heat exchanger 10 to flow only to the air heater 20 or only to the second blowing assembly 50. That is, the low-temperature gas flowing out of the heat exchanger 10 either flows to the air heater 20 or to the second blowing assembly 50 under the control of the switching valve group 30.

[0060] In addition to being connected to the air outlet of the switching valve group 30, the air inlet of the second blowing assembly 50 can also be connected to the gas source 300 through the second control valve 70. The second blowing assembly 50 can mix the gas flowing out of the switching valve group 30 and the gas flowing out of the second control valve 70 and blow them outward. The air outlet of the air heater 20 is connected to the air inlet of the first blowing assembly 40, and the gas blown out of the air heater 20 can be blown outward through the first blowing assembly 40. In addition to being connected to the air outlet of the switching valve group 30, the air inlet of the air heater 20 can also be connected to the gas source 300 through the first control valve 60.

[0061] In actual application, the first blowing assembly 40 and the second blowing assembly 50 blow gas to different objects. The first control valve 60 and the second control valve 70 can both be conventional solenoid valves, electric valves, manual valves, etc.

[0062] In an embodiment of the present application, the first control valve 60 and the switching valve group 30 do not allow gas to flow to the air inlet of the air heater 20 at the same time, that is, the gas entering the air heater 20 is either the gas that flows through the first control valve 60 and comes from the gas provided by the gas source 300, or the gas that flows through the switching valve group 30 and comes from the low-temperature gas provided by the heat exchanger 10.

[0063] When the blowing device 100 is applied to the test sorting machine 1000 , the first blowing component 40 thereof is used to blow gas to the test station 201 of the test sorting machine 1000 , and the second blowing component 50 thereof is used to blow gas to the cavity 200 of the test sorting machine 1000 .

[0064] Reference Figure 2 In actual application, when the test sorter 1000 is in a low-temperature test condition, the air blowing device 100 is in a first working state, at which time the first control valve 60 is cut off by itself and cuts off the connection between the gas source 300 and the air heater 20, so as not to allow the gas from the gas source 300 to flow to the air heater 20. Moreover, a part of the gas provided by the gas source 300 enters the heat exchanger 10 to exchange heat with the refrigerant provided by the refrigerant machine, and the switching valve group 30 connects the gas outlet of the heat exchanger 10 with the air inlet of the air heater 20, and allows the low-temperature gas obtained by heat exchange to flow to the air heater 20. The air heater 20 is in a heating state and adjusts the temperature of the low-temperature gas to the required test temperature, and finally blows the low-temperature gas to the test station 201 through the first air blowing assembly 40, so as to create a low-temperature test environment for the test station 201. At the same time, the second control valve 70 connects the gas source 300 and the second blowing assembly 50, so that another part of the gas provided by the gas source 300 flows directly to the second blowing assembly 50 through the second control valve 70, so that the second blowing assembly 50 can blow gas into the cavity 200 of the test sorting machine 1000, and the gas can reduce the probability of frost and condensation inside the cavity 200.

[0065] Reference Figure 3In actual application, when the test sorting machine 1000 is in a normal high temperature test condition, the blowing device 100 is in a second working state. At this time, the first control valve 60 itself is turned on to connect the gas source 300 with the air heater 20. A part of the gas provided by the gas source 300 flows directly to the air heater 20 through the first control valve 60. The air heater 20 is in a heating state and heats the gas to the required test temperature. Finally, the gas is blown to the test station 201 through the first blowing component 40 to create a normal high temperature test environment for the test station 201. At the same time, a part of the gas provided by the gas source 300 enters the heat exchanger 10 to exchange heat with the refrigerant provided by the refrigerant machine, and the switching valve group 30 connects the heat exchanger 10 with the second blowing assembly 50, so that the low-temperature gas obtained by heat exchange flows to the second blowing assembly 50 through the switching valve group 30, and the second control valve 70 connects the gas source 300 with the second blowing assembly 50, so that another part of the gas provided by the gas source 300 also flows directly to the second blowing assembly 50 through the second control valve 70, and the second blowing assembly 50 blows out a mixture of the gas directly provided by the gas source 300 and the low-temperature gas after heat exchange, so as to moderately cool down the internal environment of the cavity 200.

[0066] In this way, when switching between the normal high temperature test condition and the low temperature test condition, the refrigerant machine can keep working without repeated start and stop, which helps to improve the working efficiency of the test sorting machine 1000. Moreover, under the normal high temperature test condition, the low temperature refrigerant flowing out of the heat exchanger 10 is used to cool the cavity 200, and then other components located in the cavity 200 can be cooled, which helps to improve the service life of the test sorting machine 1000, killing two birds with one stone.

[0067] It should be noted that the air heater 20 may be configured with one or more. The switching valve group 30 may be connected to the air inlet of some or all of the air heaters 20 through a pipeline, and the first control valve 60 may be connected to the air inlet of some or all of the air heaters 20 through a pipeline. The first blowing assembly 40 may be connected to the air outlet of all the air heaters 20. Figure 5 When the switching valve group 30 and the first control valve 60 are connected to the air inlet of the same air heater 20, a three-way joint 24 can be set on the air intake pipe 21 connected to the air intake of the air heater 20, and the three-way joint 24 is used to connect the air intake pipe 21 to the first control valve 60 and the switching valve group 30.

[0068] It should be noted that one or more second control valves 70 may be configured, and each second control valve 70 is independently connected between the second blowing assembly 50 and the gas source 300. In this way, the amount of gas provided by the gas source 300 to the second blowing assembly 50 can be controlled by controlling the number of second control valves 70 in the conductive state, thereby regulating the temperature of the gas blown by the second blowing assembly 50. Specifically, the pipeline connected to the air inlet of the second blowing assembly 50 may have multiple air inlet interfaces 71 (see Figure 4 and Figure 5 ), each second control valve 70 supplies air to the second blowing assembly 50 through an air inlet interface 71.

[0069] In some embodiments, reference Figure 2 , Figure 3 , Figure 4 and Figure 6 The switching valve group 30 includes a first valve body 31 and a second valve body 32. The first valve body 31 is connected between the gas outlet of the heat exchanger 10 and the air inlet of the air heater 20, and the second valve body 32 is connected between the gas outlet of the heat exchanger 10 and the second blowing assembly 50. The first valve body 31 and the second valve body 32 are not in a conducting state at the same time.

[0070] It can be understood that the first valve body 31 and the second valve body 32 both have an air inlet and an air outlet. The air inlet of the first valve body 31 and the air inlet of the second valve body 32 are both connected to the gas outlet of the heat exchanger 10, the air outlet of the first valve body 31 is connected to the air inlet of the air heater 20, and the air outlet of the second valve body 32 is connected to the second blowing assembly 50.

[0071] The first valve body 31 and the second valve body 32 can both switch between their own cut-off state (their air inlet is not connected to their air outlet) and the on state (their air inlet is connected to their air outlet), and the two are not in the on state at the same time, so that the low-temperature gas flowing out of the gas outlet of the heat exchanger 10 either flows to the air heater 20 through the first valve body 31, or flows to the second blowing assembly 50 through the second valve body 32.

[0072] The first valve body 31 and the second valve body 32 can be solenoid valves, electric valves, manual valves, etc., and the specific types are not limited. Preferably, the first valve body 31 and the second valve body 32 are low-temperature resistant solenoid valves, which can better withstand low-temperature gas and have higher reliability.

[0073] At this time, the switching valve group 30 realizes the switching connection between the gas outlet of the heat exchanger 10 and the air heater 20 and the second blowing assembly 50 through two valve bodies, which has a simple structure and is conducive to cost control.

[0074] Of course, the specific structure of the switching valve group 30 can be obtained by conventional settings by those skilled in the art, for example, a three-way valve with one air inlet and two air outlets is used as the switching valve group 30 .

[0075] In some embodiments, reference Figures 1 to 3 The blowing device 100 further includes a third control valve 80 , one end of which is used to connect to the gas source 300 , and the other end of which is connected to the gas inlet of the heat exchanger 10 .

[0076] The gas inlet of the heat exchanger 10 is an inlet for communicating with the gas source 300. The third control valve 80 can be a solenoid valve, an electric valve, a manual valve, etc. The third control valve 80 is convenient for controlling the gas source 300 to provide gas to the heat exchanger 10.

[0077] Among them, one or more third control valves 80 may be configured, and each third control valve 80 may be independently arranged between the gas source 300 and the gas inlet of the heat exchanger 10. In this way, the amount of gas from the gas source 300 entering the heat exchanger 10 may be controlled by controlling the number of third control valves 80 in the conducting state.

[0078] In some embodiments, reference Figure 6 The first air blowing assembly 40 includes a test mounting seat 41 and at least one air distributor block 43. The test mounting seat 41 is used to mount the electronic device to be tested, and is provided with at least one first air blowing portion 42. The air heater 20 includes at least one air outlet, and each air outlet of the air heater 20 is independently connected to each first air blowing portion 42 via the air distributor block 43. Each air distributor block 43 is provided with a temperature sensor.

[0079] In actual application, the test mount 41 is arranged at the test station 201 of the test sorting machine 1000, and can be used, but not limited to, to install the electronic device to be tested. It is possible that the test mount 41 is provided with a positioning portion 41a such as a positioning hole or a positioning groove for positioning the electronic device to be tested. The test mount 41 is provided with a first blowing portion 42. The first blowing portion 42 can be a blowing hole, a blowing nozzle, etc.

[0080] Typically, a plurality of first air blowing parts 42 are provided on the test mount 41, and the air distribution structure includes a plurality of air distribution blocks 43. The plurality of first air blowing parts 42 can be evenly spaced around the periphery of the test mount 41. Each first air blowing part 42 can be connected to the air outlet of the air heater 20 via an air distribution block 43. For example, the air heater 20 is configured with a plurality of air blowing parts, and the air outlet of each air heater 20 is connected to an air distribution block 43.

[0081] At this time, the blowing device 100 is provided with a test mounting seat 41 capable of mounting the electronic device to be tested, which is not only rich in functions but also convenient for fixing the first blowing part 42. Secondly, each first blowing part 42 is independently supplied with air via an air distribution block 43, and each air distribution block 43 is independently provided with a temperature sensor, which can monitor the temperature of the air blown out by each first blowing part 42, making the test temperature more accurate.

[0082] In some embodiments, reference Figure 4 The second blowing assembly 50 includes two groups of second blowing parts 51 arranged at intervals in the height direction Z. The two groups of second blowing parts 51 blow in opposite directions in the height direction Z.

[0083] The second air blowing parts 51 may include air blowing holes, air blowing pipes, air blowing nozzles, etc. In practical applications, one group of the second air blowing parts 51 is disposed near the top of the cavity 200 and can deliver air toward the top of the cavity 200. Another group of the second air blowing parts 51 is disposed near the bottom of the cavity 200 and can deliver air toward the bottom of the cavity 200.

[0084] In this way, the top and bottom of the cavity 200 can be cooled by the two sets of second blowing parts 51 , and the temperature of the area blown by the first blowing assembly 40 in the middle area of ​​the cavity 200 is less affected due to the reverse blowing.

[0085] Of course, in other embodiments, the second blowing assembly 50 may further include more groups of second blowing parts 51 , and some of the second blowing parts 51 may blow toward the sides of the cavity 200 .

[0086] In some embodiments, continue to refer to Figure 4 Among the two groups of second air blowing parts 51, one group of the second air blowing parts 51 includes an air blowing block 51b, on which a plurality of air blowing holes for air supply in the same direction are arranged. The other group of the second air blowing parts 51 includes an air blowing rod 51a, on which a plurality of air blowing holes for air supply in the same direction are arranged at intervals along the longitudinal direction thereof.

[0087] The plurality of blowing holes on the blowing block 51b can blow air toward the inner wall of the cavity 200. The second blowing part 51 may include a plurality of blowing blocks 51b, each of which is independently arranged. The blowing block 51b is adapted to cool down the components in a certain concentrated area on the inner wall of the cavity 200, and has a good cooling effect.

[0088] The blowing rod 51a is in the shape of a long strip, and a plurality of blowing holes are arranged along its extension direction, and the plurality of blowing holes can blow air in the same direction toward the inner wall of the cavity 200. The second blowing part 51 may include a plurality of blowing rods 51a, and each blowing rod 51a is independently arranged. The blowing rod 51a has a large extension length, and can cool a large area of ​​the inner wall of the cavity 200.

[0089] In some embodiments, continue to refer to Figure 4 The second blowing assembly 50 includes a main pipeline 52 and at least two branch pipelines 53. The switching valve group 30 allows gas to flow to the main pipeline 52. Each branch pipeline 53 independently connects the main pipeline 52 with each group of second blowing parts 51. A temperature collector 90 is arranged on the main pipeline 52.

[0090] That is, the second blowing assembly 50 is connected to the air outlet of the switching valve group 30 through the main pipeline 52 to communicate with the switching valve group 30, and the gas in the main pipeline 52 is diverted to each group of second blowing parts 51 through multiple branch pipelines 53, which can simplify the pipeline layout.

[0091] Moreover, the gas temperature measured by the temperature collector 90 provided on the main pipeline 52 can more accurately reflect the temperature of the gas blown by each second blowing part 51, and it is economical and practical.

[0092] In the embodiment of the present application, the gas source 300 and the first control valve 60, the second control valve 70 and the third control valve 80, the valve air heater 20 and the switching valve group 30 and the first control valve 60, the air heater 20 and the first blowing assembly 40, and the switching valve group 30 and the second blowing assembly 50 can be connected by pipelines. A heat preservation structure (such as heat preservation cotton) can be wrapped outside the pipeline to reduce the heat exchange between the gas and the atmosphere.

[0093] In some embodiments, continue to refer to Figure 5 The blowing device 100 further includes an air intake pipeline 21, a regulating valve 22 and a temperature collecting member 23. The first control valve 60 and the switching valve group 30 are both connected to the air intake port of the air heater 20 through the air intake pipeline 21. The temperature collecting member 23 is used to collect the temperature of the gas heated by the air heater 20. The regulating valve 22 is arranged on the air intake pipeline 21, and can adjust the gas flow of the air intake pipeline 21 according to the temperature collected by the temperature collecting member 23.

[0094] When there are multiple air heaters 20, the air inlet of each air heater 20 can be connected to the first control valve 60 and the switching valve group 30 through an air inlet pipeline 21. The temperature acquisition component 23 can be arranged in the air heater 20, and can also be arranged at the air outlet of each air heater 20. The temperature acquisition component 23 can be a conventional temperature sensor, a temperature sensing package, etc.

[0095] The regulating valve 22 can be a manual valve, an electric valve, a solenoid valve, etc., which can be used to adjust the gas flow of the intake pipe 21, and then adjust the gas content entering the air heater 20. When the temperature collected by the temperature collection component 23 is relatively high, the gas flow of the intake pipe 21 can be increased through the regulating valve 22 to prevent the air heater 20 from overburning.

[0096] In a specific embodiment of the present application, the blowing device 100 includes the above-mentioned first control valve 60, the heat exchanger 10, the second control valve 70, the switching valve group 30, the air heater 20, the first blowing assembly 40 and the second blowing assembly 50. The blowing device 100 has a first working state and a second working state, and can be switched between the two working states. In the first working state, the test sorting machine 1000 equipped with the blowing device 100 is in a low-temperature test condition, and in the second working state, the test sorting machine 1000 equipped with the blowing device 100 is in a normal high-temperature test condition.

[0097] Specifically, when in the first working state, the first control valve 60 cuts off the connection between the air source 300 and the air heater 20, the switching valve group 30 connects the second blowing assembly 50 and the heat exchanger 10, and the second control valve 70 connects the air source 300 and the second blowing assembly 50, and the air heater 20 is in a heating state.

[0098] That is, in the first working state (refer to Figure 2 ), a part of the gas delivered by the gas source 300 and the refrigerant delivered by the refrigerant machine are heat exchanged in the heat exchanger 10 to become low-temperature gas, and the low-temperature gas discharged from the heat exchanger 10 is delivered to the air heater 20 through the switching valve group 30, and under the temperature adjustment of the air heater 20, the low-temperature gas of the required test temperature is blown to the test station 201 through the first blowing component 40, and the test sorting machine 1000 is in a low-level test condition. At the same time, another part of the gas delivered by the gas source 300 flows to the second blowing component 50 through the second control valve 70, and the second blowing component 50 can deliver gas into the cavity 200 to reduce the probability of condensation and frost in the cavity 200.

[0099] Specifically, when in the second working state, the first control valve 60 connects the air source 300 and the air heater 20, the switching valve group 30 connects the second blowing assembly 50 and the heat exchanger 10, the second control valve 70 connects the air source 300 and the second blowing assembly 50, and the air heater 20 is in a heating state.

[0100] That is, in the second working state (refer to Figure 3 ), the first control valve 60 allows part of the gas from the gas source 300 to flow directly to the air heater 20. After the air heater 20 heats the gas, it blows medium-high temperature gas to the test station 201 through the first blowing assembly 40, and the test sorting machine 1000 is in a normal high temperature test condition. At the same time, part of the gas delivered by the gas source 300 exchanges heat with the refrigerant delivered by the refrigerant machine in the heat exchanger 10 to become low-temperature gas. The low-temperature gas discharged from the heat exchanger 10 is delivered to the second blowing assembly 50 through the switching valve group 30, and then mixed with another part of the gas from the gas source 300 delivered by the second control valve 70. The mixed lower temperature gas is delivered to the cavity 200 through the second blowing assembly 50 to reduce the temperature of the cavity 200.

[0101] It is easy to understand that in actual application, the test sorting machine 1000 can adjust the temperature of the gas blown by the second blowing assembly 50 under normal high temperature test conditions by adjusting the cooling capacity of the refrigerant machine and the gas flow rate of the gas entering the second blowing assembly 50, so as to reasonably cool the cavity 200 without affecting the test temperature at the test station 201.

[0102] In addition, the embodiment of the present application further provides a test sorting machine 1000, including a loading device, a testing device, a receiving device and a conveying device, the testing device includes a cavity, the cavity has a testing station, the conveying device is used to move the electronic device to be tested provided by the loading device to the testing station, and is used to move the electronic device tested at the testing station to the receiving device for recycling, the test sorting machine 1000 also includes the blowing device 100 in any of the above embodiments, the first blowing assembly 40 is used to blow air to the testing station 201, and the second blowing assembly 50 is used to blow air to the cavity 200. The test sorting machine 1000 includes the beneficial effects in the above embodiments, which are not repeated here.

[0103] The test sorting machine 1000 needs to use a refrigerant during use, and the refrigerant can be an external device. Of course, in some embodiments, the test sorting machine 1000 includes a refrigerant, and the refrigerant is connected to the heat exchanger 10 to transport the refrigerant to the heat exchanger 10. That is, the test sorting machine 1000 has its own refrigerant, which has richer functions and more complete supporting facilities.

[0104] 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.

[0105] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A blowing device (100), used in conjunction with an air source (300) and a refrigerant machine, characterized in that: The blowing device (100) comprises: A heat exchanger (10) is used to connect the gas source (300) and the refrigerant machine so as to exchange heat between the gas provided by the gas source (300) and the refrigerant provided by the refrigerant machine; Air heater (20); a first air blowing assembly (40) and a second air blowing assembly (50), both used for blowing air outwards, wherein the first air blowing assembly (40) is communicated with an air outlet of the air heater (20); a switching valve assembly (30) connected to the gas outlet of the heat exchanger (10) and selectively allowing the heat-exchanged gas to flow toward the air inlet of the air heater (20) or the second air blowing assembly (50); a first control valve (60), one end of which is connected to the air source (300) and the other end of which is connected to the air inlet of the air heater (20); and a second control valve (70), one end of which is used to communicate with the air source (300), and the other end of which is communicated with the air inlet of the second air blowing assembly (50); The first control valve (60) and the switching valve group (30) do not simultaneously allow gas to flow toward the air inlet of the air heater (20).

2. The blowing device (100) according to claim 1, characterized in that: The switching valve group (30) comprises a first valve body (31) and a second valve body (32), the first valve body (31) being connected between the gas outlet of the heat exchanger (10) and the air inlet of the air heater (20), and the second valve body (32) being connected between the gas outlet of the heat exchanger (10) and the second air blowing assembly (50); The first valve body (31) and the second valve body (32) are not in a conducting state at the same time.

3. The blowing device (100) according to claim 1, characterized in that: The blowing device (100) further comprises a third control valve (80), one end of which is used to connect to the gas source (300), and the other end of which is used to connect to the gas inlet of the heat exchanger (10).

4. The blowing device (100) according to claim 1, characterized in that: The first air blowing assembly (40) comprises a test mounting seat (41) and at least one air distribution block (43); the test mounting seat (41) is used to mount an electronic device to be tested and is provided with at least one first air blowing portion (42) for air blowing; The air heater (20) comprises at least one air outlet, and each air outlet of the air heater (20) is independently connected to each first air blowing part (42) via the air distribution block (43); Each of the gas distribution blocks (43) is provided with a temperature sensor.

5. The blowing device (100) according to claim 1, characterized in that: The second blowing assembly (50) comprises two groups of second blowing parts (51) arranged at intervals in the height direction (Z); the two groups of second blowing parts (51) blow in opposite directions in the height direction (Z); The second blowing assembly (50) further comprises a main pipeline (52) and at least two branch pipelines (53); the switching valve group (30) is capable of allowing gas to flow into the main pipeline (52); each of the branch pipelines (53) independently connects the main pipeline (52) with each group of the second blowing parts (51); and a temperature collector (90) is provided on the main pipeline (52).

6. The blowing device (100) according to claim 5, characterized in that: Among the two groups of second air blowing parts (51), one group of the second air blowing parts (51) comprises an air blowing block (51b), and the air blowing block (51b) is provided with a plurality of air blowing holes for supplying air in the same direction; Another group of the second blowing parts (51) comprises a blowing rod (51a), on which a plurality of blowing holes for supplying air in the same direction are arranged at intervals along the longitudinal direction thereof.

7. The blowing device (100) according to claim 1, characterized in that: The air blowing device (100) comprises an air intake pipeline (21), a regulating valve (22) and a temperature collecting component (23); the first control valve (60) and the switching valve group (30) are both connected to the air intake of the air heater (20) via the air intake pipeline (21); The temperature collecting component (23) is used to collect the temperature of the gas heated by the air heater (20), and the regulating valve (22) is arranged on the air intake pipeline (21) and can adjust the gas flow rate of the air intake pipeline (21) according to the temperature collected by the temperature collecting component (23).

8. The blowing device (100) according to claim 1, characterized in that: The blowing device (100) has a first working state and a second working state; When in the first working state, the first control valve (60) cuts off the connection between the air source (300) and the air heater (20), the switching valve group (30) connects the air heater (20) and the heat exchanger (10), the second control valve (70) connects the air source (300) and the second blowing assembly (50), and the air heater (20) is in a heating state; When in the second working state, the first control valve (60) connects the air source (300) and the air heater (20), the switching valve group (30) connects the second blowing component (50) and the heat exchanger (10), and the second control valve (70) connects the air source (300) and the second blowing component (50), and the air heater (20) is in a heating state.

9. A test sorting machine (1000), comprising a loading device, a testing device, a receiving device and a conveying device, wherein the testing device comprises a cavity (200), the cavity (200) has a testing station (201), the conveying device is used to transfer the electronic devices to be tested provided by the loading device to the testing station (201), and is used to move the electronic devices tested at the testing station (201) to the receiving device for recovery, characterized in that: The test sorting machine (1000) further comprises: According to the blowing device (100) according to any one of claims 1 to 8, the first blowing component (40) is used for blowing air toward the test station (201), and the second blowing component (50) is used for blowing air toward the cavity (200).

10. The test handler (1000) according to claim 9, characterized in that: The test sorting machine (1000) further comprises a refrigerant machine, which is in communication with the heat exchanger (10) and is used to transport refrigerant to the heat exchanger (10).

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