A temperature limiter life test device

Abstract

The present invention discloses a device for testing the life of a thermostat, which relates to the technical field of air conditioning component detection, and solves the problem of unstable test results caused by using a hair dryer to test the life of a thermostat in the prior art. The device includes a heating component, a heat dissipation component, a test carrier and a first air duct. The thermostat to be tested is installed on the test carrier located above the air outlet of the first air duct. The heating component and the heat dissipation component are located at both ends of the first air duct. The hot air generated by the heating component flows out through the air outlet of the first air duct and heats the thermostat to be tested. The heat dissipation component introduces ambient room temperature air into the first air duct and flows out through the air outlet to cool the thermostat to be tested, so as to provide the required temperature for the opening and closing of the contacts of the thermostat to be tested through the heating component and the heat dissipation component, and the life of the thermostat to be tested is measured by recording the number of times the contacts of the thermostat to be tested are opened and / or closed. The thermostat life result measured by the device has good stability.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioner component detection, and in particular to a temperature limiter life test device. Background Art

[0002] The temperature limiter is a temperature sensitive controller, mainly including temperature sensing components and contacts. Under normal conditions, the contacts are closed and the corresponding circuit works normally; when the temperature sensed by the temperature sensing component exceeds the set range (lower or higher than a certain temperature value), the contacts are disconnected, causing the corresponding circuit to be disconnected; when the temperature returns to the set range, the contacts are closed again, and the corresponding circuit is also closed again. Therefore, the temperature limiter can limit the corresponding temperature within the set range and play a protective role.

[0003] Air conditioner motors and electric heating components are strong electrical devices that will generate heat during operation. When the motors and electric heating components are working abnormally and generate abnormal heat, causing the surface temperature of the motors and electric heating components to exceed the normal operating temperature value, the temperature limiter of the motors and electric heating components should be able to cut off the power supply to stop the motors and electric heating components from working, so as to prevent the motors and electric heating components from thermal deformation, burning, etc., which would affect the safety of the entire product. Therefore, the reliability of the life of the temperature limiter of the motors and electric heating components directly affects the safety of the entire product.

[0004] In the prior art, when testing the life of a thermostat, a hair dryer is used to blow hot air to heat the thermostat to be tested. When the thermostat contacts are disconnected, the heating is stopped. When the thermostat to be tested cools down and the contacts are closed again, the hair dryer is used again to blow hot air to heat the thermostat to be tested. This cycle is repeated, and the life of the thermostat is tested by recording the number of times the thermostat contacts are opened or closed. However, the prior art has at least the following defects in testing the life of a thermostat using a hair dryer: (1) The existing test tool is carried out in an open environment. The opening and closing time of the thermostat contacts is greatly affected by the ambient temperature, airflow, and the distance between the hair dryer outlet and the thermostat to be tested, making the test result of the life of the thermostat to be tested unstable; (2) The existing test tool cannot simulate the circuit environment in which the thermostat is actually used. The thermostat contacts can only be opened or closed mechanically. Therefore, there is a large error between the test result and the life of the thermostat in actual use.

[0005] Therefore, there is an urgent need to improve the test tooling in the prior art. Summary of the invention

[0006] One of the purposes of the present invention is to provide a temperature limiter life test device, which solves the technical problem of using a hair dryer to test the temperature limiter life in the prior art, resulting in unstable test results. The many technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The temperature limiter life test device of the present invention comprises a heating component, a heat dissipation component, a test carrier and a first air duct, wherein the temperature limiter to be tested is installed on the test carrier located above the air outlet of the first air duct, the heating component and the heat dissipation component are located at both ends of the first air duct, the hot air generated by heating by the heating component flows out through the air outlet of the first air duct and heats the temperature limiter to be tested, the heat dissipation component introduces ambient room temperature air into the first air duct and flows out through the air outlet to cool the temperature limiter to be tested, so as to provide the required temperature for the opening and closing of the contacts of the temperature limiter to be tested through the heating component and the heat dissipation component, and the life of the temperature limiter to be tested is measured by recording the number of times the contacts of the temperature limiter to be tested are opened and / or closed.

[0009] According to a preferred embodiment, the temperature limiter life test device further comprises a load component, and the temperature limiter to be tested is connected to the load component, and current is provided to the temperature limiter to be tested through the load component.

[0010] According to a preferred embodiment, the temperature limiter life test device also includes a controller component, which is connected to the heating component, the heat dissipation component and the load component to control the working states of the heating component, the heat dissipation component and the load component through the controller component; the controller component is also connected to the first air duct and the temperature limiter to be tested to collect the temperature in the first air duct, the temperature and / or current of the temperature limiter to be tested through the controller component.

[0011] According to a preferred embodiment, the heating component includes a heater, a second air duct, a first one-way valve and a first fan, wherein the first one-way valve is arranged at the end of one end of the first air duct, the second air duct is located between the heater and the first one-way valve, and the first fan is located in the second air duct, so that the hot air generated by the heating of the heater by the first fan is sent into the first air duct through the second air duct and the first one-way valve in sequence.

[0012] According to a preferred embodiment, the heat dissipation component includes a third air duct, a second one-way valve and a second fan, wherein the second one-way valve is arranged between the first air duct and the third air duct, and the second fan is located in the third air duct, so that the external normal temperature air is introduced into the third air duct through the second fan and is sent into the first air duct through the third air duct and the second one-way valve in sequence.

[0013] According to a preferred embodiment, a plurality of test stations and station terminals are provided on the test carrier, wherein the test station is used to place the temperature limiter to be tested, and the temperature limiter to be tested is also connected in series with a load component via the station terminal; and an opening is provided on one side of the test station close to the first air duct outlet, so that the hot air or normal temperature air flowing out through the first air duct outlet can flow upward and contact the surface of the temperature limiter to be tested on the test station.

[0014] According to a preferred embodiment, the test station corresponds one-to-one to the air outlet on the first air duct, so that the hot air flowing out of the air outlet heats the temperature limiter to be tested on the test station, or the normal temperature air flowing out of the air outlet cools the temperature limiter to be tested on the test station.

[0015] According to a preferred embodiment, the load assembly includes a terminal and a resistive component, wherein the terminal is connected to a power source, one end of the resistive component is connected to the terminal, and the other end is connected in series with the temperature limiter to be tested via a station terminal.

[0016] According to a preferred embodiment, the controller component includes a touch screen, a PLC controller, a current transformer and a temperature measuring device, wherein the touch screen is used to display data and / or input instructions; the PLC controller is used to control the working status of the heating component, the heat dissipation component and the load component; the current transformer is used to collect the current of the temperature limiter to be tested; and the temperature measuring device is used to collect the temperature in the first air duct and / or the temperature of the temperature limiter to be tested.

[0017] According to a preferred embodiment, the PLC controller is connected to the current transformer, and the PLC controller also records the number of times the contacts of the temperature limiter to be tested are opened and / or closed based on the current signal collected by the current transformer.

[0018] The temperature limiter life test device provided by the present invention has at least the following beneficial technical effects:

[0019] The temperature limiter life test device of the present invention is characterized in that the temperature limiter to be tested is installed on a test carrier located above the air outlet of the first air duct, and the hot air generated by heating by the heating component flows out through the air outlet of the first air duct and heats the temperature limiter to be tested, and the heat dissipation component introduces ambient room temperature air into the first air duct and flows out through the air outlet to cool the temperature limiter to be tested. Compared with the test tooling in the prior art, the influence of the ambient temperature, the air flow size and the distance between the air outlet and the temperature limiter to be tested on the test results can be reduced, so that the results measured by using the temperature limiter life test device of the present invention have good stability, which solves the technical problem of using a hair dryer to test the life of the temperature limiter in the prior art, resulting in unstable test results.

[0020] By using the temperature limiter life test device of the present invention, the life test of the temperature limiter to be tested can be carried out quickly, and the measured result has good stability, thereby improving the product quality prevention and control capabilities.

[0021] In addition, the preferred technical solution of the present invention also has the following beneficial technical effects:

[0022] The temperature limiter life test device of the preferred technical solution of the present invention also includes a load component, the temperature limiter to be tested is connected to the load component, and current is provided to the temperature limiter to be tested through the load component. The preferred technical solution of this embodiment can simulate the circuit environment in which the temperature limiter is located in actual use through the load component, so that the test result is closer to the life of the temperature limiter in actual application, which solves the technical problem that the test tooling in the prior art cannot simulate the circuit environment in which the temperature limiter is located in actual use, resulting in a large error between the test result and the life of the temperature limiter in actual application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the appearance of a preferred embodiment of the temperature limiter life test device of the present invention;

[0025] Figure 2 is a schematic diagram of a heating assembly, a heat dissipation assembly, a test carrier and a first air duct of the present invention;

[0026] Figure 3 yes Figure 2 Schematic diagram of local decomposition;

[0027] Figure 4is a schematic diagram of a preferred embodiment of the test vehicle of the present invention;

[0028] Figure 5 It is a schematic diagram of a preferred embodiment of the test socket of the present invention;

[0029] Figure 6 is a schematic diagram of another preferred embodiment of the test socket of the present invention;

[0030] Figure 7 is a schematic diagram of a preferred embodiment of the load assembly of the present invention;

[0031] Figure 8 is a schematic diagram of a preferred embodiment of the controller assembly of the present invention;

[0032] Fig. 9 It is a module schematic diagram of the connection between the controller component of the present invention and other components.

[0033] In the figure: 1. Heating component; 11. Heater; 12. Second air duct; 13. First non-return valve; 2. Heat dissipation component; 21. Third air duct; 22. Second non-return valve; 3. Test carrier; 31. Test station; 311. Test socket; 312. Test card socket; 32. Station terminal; 4. First air duct; 5. Temperature limiter to be tested; 6. Load component; 61. Terminal block; 62. Resistive component; 7. Controller component; 8. Machine. DETAILED DESCRIPTION

[0034] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0035] The following is combined with Figures 1 to 9 The temperature limiter life test device of this embodiment is described in detail.

[0036] The temperature limiter life test device of this embodiment includes a heating component 1, a heat dissipation component 2, a test carrier 3 and a first air duct 4. Figures 1 to 4As shown. The temperature limiter 5 to be tested is installed on a test vehicle 3 located above the air outlet of the first air duct 4, the heating component 1 and the heat dissipation component 2 are located at both ends of the first air duct 4, the hot air generated by the heating component 1 flows out through the air outlet of the first air duct 4 and heats the temperature limiter 5 to be tested, and the heat dissipation component 2 introduces ambient room temperature air into the first air duct 4 and flows out through the air outlet to cool the temperature limiter 5 to be tested, so as to provide the required temperature for the opening and closing of the contacts of the temperature limiter 5 to be tested through the heating component 1 and the heat dissipation component 2, and the life of the temperature limiter 5 to be tested is measured by recording the number of times the contacts of the temperature limiter 5 to be tested are opened and / or closed, as shown in FIG. Figure 2 shown.

[0037] like Figure 1 As shown, the temperature limiter life test device of this embodiment also includes a machine 8. Preferably, the heating component 1, the heat dissipation component 2 and the first air duct 4 are located inside the machine 8, which can not only further reduce the influence of external factors such as ambient temperature and airflow size on the test results, but also protect the heating component 1, the heat dissipation component 2 and the first air duct 4 through the machine 8. It can be known that Figure 1 The positions of the heating component 1, the heat dissipation component 2 and the first air duct 4 marked in the figure refer to the positions of the heating component 1, the heat dissipation component 2 and the first air duct 4 inside the machine 8. Specifically, the structures of the heating component 1, the heat dissipation component 2 and the first air duct 4 are as follows: Figure 2 Or as shown in 3.

[0038] In the temperature limiter life test device of the present embodiment, the temperature limiter 5 to be tested is installed on the test carrier 3 located above the air outlet of the first air duct 4, and the hot air generated by heating by the heating component 1 flows out through the air outlet of the first air duct 4 and heats the temperature limiter 5 to be tested, and the heat dissipation component 2 introduces the ambient room temperature air into the first air duct 4 and flows out through the air outlet to cool the temperature limiter 5 to be tested. Compared with the test tooling in the prior art, the influence of the ambient temperature, the air flow size and the distance between the air outlet and the temperature limiter 5 to be tested on the test results can be reduced, so that the results measured by the temperature limiter life test device of the present embodiment have good stability, which solves the technical problem of using a hair dryer to test the life of the temperature limiter in the prior art, resulting in unstable test results.

[0039] By using the temperature limiter life test device of this embodiment, the life test of the temperature limiter 5 to be tested can be carried out quickly, and the measured result has good stability, thereby improving the product quality prevention and control capabilities.

[0040] According to a preferred embodiment, the temperature limiter life test device further includes a load component 6, such as Figure 1 Preferably, the temperature limiter 5 to be tested is connected to a load component 6, and the load component 6 provides current to the temperature limiter 5 to be tested. Similarly, Figure 1The position of the load assembly 6 marked in the figure refers to the position of the load assembly 6 inside the machine 8. Specifically, the structure of the load assembly 6 is as follows: Figure 7 The preferred technical solution of this embodiment can simulate the circuit environment of the temperature limiter 5 to be tested in actual use through the load component 6, so that the test result is closer to the life of the temperature limiter in actual use, and solves the technical problem that the test tooling in the prior art cannot simulate the circuit environment of the temperature limiter in actual use, resulting in a large error between the test result and the life of the temperature limiter in actual use.

[0041] According to a preferred embodiment, the temperature limiter life test device further includes a controller component 7, such as Figure 1 Preferably, the controller component 7 is connected to the heating component 1, the heat dissipation component 2 and the load component 6, so as to control the working state of the heating component 1, the heat dissipation component 2 and the load component 6 through the controller component 7, as shown in FIG. Fig. 9 Preferably, the controller component 7 is also connected to the first air duct 4 and the temperature limiter 5 to be tested, so that the temperature in the first air duct 4, the temperature and / or current of the temperature limiter 5 to be tested are collected through the controller component 7, as shown in FIG. Fig. 9 The temperature limiter life test device of the preferred technical solution of this embodiment further includes a controller component 7, which controls the working states of the heating component 1, the heat dissipation component 2 and the load component 6, and collects the temperature in the first air duct 4, the temperature and / or current of the temperature limiter 5 to be tested through the controller component 7, so as to realize automatic testing of the life of the temperature limiter 5 to be tested, reduce the labor intensity of workers, and improve the test efficiency and accuracy.

[0042] According to a preferred embodiment, the heating assembly 1 includes a heater 11, a second air duct 12, a first one-way valve 13 and a first fan. Figure 2 Or 3. Among them, the first one-way valve 13 is arranged at the end of one end of the first air duct 4, the second air duct 12 is located between the heater 11 and the first one-way valve 13, and the first fan is located in the second air duct 12, so that the hot air generated by the heater 11 is heated by the first fan and sent to the first air duct 4 through the second air duct 12 and the first one-way valve 13 in sequence. Preferably, the heater 11 is an electric heating wire or an electric heating device made of other materials, which is used to heat the air.

[0043] According to a preferred embodiment, the heat dissipation assembly 2 includes a third air duct 21, a second one-way valve 22 and a second fan. Figure 2 Or 3. The second one-way valve 22 is arranged between the first air duct 4 and the third air duct 21, and the second fan is located in the third air duct 21, so that the ambient air at normal temperature is introduced into the third air duct 21 through the second fan and then sent into the first air duct 4 through the third air duct 21 and the second one-way valve 22 in sequence.

[0044] Combination Figure 2 , specifically explain how the heating component 1 and the heat dissipation component 2 provide the required temperature for the opening and closing of the contact of the temperature limiter 5 to be tested: when the contact of the temperature limiter 5 to be tested is in a closed state, the heating component 1 is started, the air is heated by the heater 11, the first one-way valve 13 of the heating component 1 is in an open state, the second one-way valve 22 of the heat dissipation component 2 is in a closed state, the first fan sends the hot air generated by the heating of the heater 11 into the first air duct 4, and the hot air flows out through the air outlet above the first air duct 4 to heat the temperature limiter 5 to be tested. When the temperature limiter 5 to be tested is heated to the point where the contact is disconnected, the heating is stopped, that is, the heating component 1 is stopped, and the heat dissipation component 2 is started. At this time, the second one-way valve 22 of the heat dissipation component 2 is in an open state, the first one-way valve 13 of the heating component 1 is in a closed state, and the second fan sends the normal temperature air of the external environment into the first air duct 4, and the normal temperature air flows out through the air outlet above the first air duct 4 to cool the temperature limiter 5 to be tested until the contact of the temperature limiter 5 to be tested is closed again. By repeating this cycle, the contacts of the temperature limiter 5 to be tested can be opened and closed alternately.

[0045] According to a preferred embodiment, the test carrier 3 is provided with a plurality of test stations 31 and station connection terminals 32, such as Figure 4 As shown. The test station 31 is used to place the temperature limiter 5 to be tested, and the temperature limiter 5 to be tested is also connected in series with the load component 6 via the station terminal 32. Preferably, an opening is provided on one side of the test station 31 close to the air outlet of the first air duct 4, so that the hot air or room temperature air flowing out of the air outlet of the first air duct 4 can flow upward and contact the surface of the temperature limiter 5 to be tested on the test station 31.

[0046] Preferably, the test station 31 may be a circular, square or other structure. The temperature limiter 5 to be tested may be fixed to the test station 31 by means of a fixing member or a clamping connection. The test carrier 3 of the preferred technical solution of this embodiment is provided with a plurality of test stations 31, and the test stations 31 are of different shapes, so that the test carrier 3 can be applied to the temperature limiters 5 to be tested of different appearance shapes, and has a wide range of applications.

[0047] Preferably, the test station 31 includes a test seat 311 and a test card seat 312. Figure 4 More preferably, the preferred technical solution of this embodiment is provided with an opening on one side of the test seat 311 close to the air outlet of the first air duct 4, so that the hot air or room temperature air flowing out of the air outlet of the first air duct 4 can flow upward and contact the surface of the temperature limiter 5 to be tested on the test station 31. Figure 5 or Figure 6More preferably, the bottom surface of the test holder 312 of the preferred technical solution of this embodiment has a circular through hole, so that the hot air or room temperature air flowing out of the air outlet of the first air duct 4 can flow upward and contact the surface of the temperature limiter 5 to be tested on the test station 31. More preferably, the test holder 311 and the test holder 312 are made of aluminum material.

[0048] According to a preferred embodiment, the test station 31 corresponds to the air outlet on the first air duct 4 one by one, so that the hot air flowing out of the air outlet heats the temperature limiter 5 to be tested on the test station 31, or the normal temperature air flowing out of the air outlet cools the temperature limiter 5 to be tested on the test station 31. The one-to-one correspondence between the test station 31 and the air outlet on the first air duct 4 mentioned in the preferred technical solution of this embodiment means that the number and position of the test station 31 corresponds to the number and position of the air outlet on the first air duct 4 one by one, so that the effect of heating and cooling the temperature limiter 5 to be tested by the hot air and normal temperature air flowing out of the air outlet can be improved.

[0049] According to a preferred embodiment, the load assembly 6 includes a terminal 61 and a resistive component 62, such as Figure 7 As shown. Among them, the terminal 61 is connected to the power supply, one end of the resistive component 62 is connected to the terminal 61, and the other end is connected in series with the temperature limiter 5 to be tested via the station terminal 32. Preferably, the resistive component 62 is a resistance wire or a heating wire, etc., which is used as an experimental load to provide a current load for the temperature limiter 5 to be tested. The preferred technical solution of this embodiment provides a current load for the temperature limiter 5 to be tested through a resistive device such as a resistance wire or a heating wire, which has the advantages of low cost and good reliability.

[0050] According to a preferred embodiment, the controller assembly 7 includes a touch screen, a PLC controller, a current transformer and a temperature measuring device. The installation position and structure of the controller assembly 7 are as follows: Figure 1 and Figure 8 As shown. Preferably, the touch screen is used to display data and / or input instructions. Preferably, the PLC controller is used to control the working state of the heating component 1, the heat dissipation component 2 and the load component 6. Specifically, the PLC controller controls the heating component 1, the heat dissipation component 2 and the load component 6 to be in an on state or an off state. Preferably, the current transformer is used to collect the current of the temperature limiter 5 to be tested. Preferably, the temperature measuring device is used to collect the temperature in the first air duct 4 and / or the temperature of the temperature limiter 5 to be tested.

[0051] The controller component 7 of the preferred technical solution of this embodiment includes a touch screen, a PLC controller, a current transformer and a temperature measuring device, wherein the touch screen is used to display various experimental parameters and trigger the control program; after the program is written into the PLC controller, it can be used to control the opening and closing of the first one-way valve 13 and the second one-way valve 22, record the number of experiments of the temperature limiter 5 to be tested, and control the heating component 1 and the heat dissipation component 2 to be turned on in turn; the current transformer is mainly used to collect the current of the temperature limiter 5 to be tested, monitor the notification of the sample through the change of current, and whether the contact is damaged; the temperature measuring device is used for real-time temperature collection in the first air duct 4 and / or monitor the temperature of the temperature limiter 5 to be tested. Preferably, the touch screen, PLC controller, current transformer and temperature measuring device of the preferred technical solution of this embodiment use the structure in the prior art, which will not be repeated here.

[0052] According to a preferred embodiment, the PLC controller is connected to the current transformer, and the PLC controller also records the number of times the contact of the temperature limiter 5 to be tested is opened and / or closed based on the current signal collected by the current transformer. The preferred technical solution of this embodiment records the number of times the contact of the temperature limiter 5 to be tested is opened and / or closed by the PLC controller, which can reduce the labor intensity of workers compared to the test tooling in the prior art.

[0053] It should be understood that the various parts of the controller component 7 of the preferred technical solution of this embodiment can be implemented by hardware, software, firmware or a combination thereof, such as the touch screen, PLC controller, current transformer and temperature measuring device mentioned in the preferred technical solution of this embodiment. In the above embodiment, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0054] The working principle of the temperature limiter life test device of this embodiment is as follows: put the temperature limiter 5 to be tested into the test station 31, and after the temperature limiter life test device is powered on, the first one-way valve 13 is opened, the second one-way valve 22 is closed, the first fan is running, and hot air flows into the first air duct 4, and the temperature limiter 5 to be tested is heated until the contact is actuated, and the heating component 1 stops working; after the contact of the temperature limiter 5 to be tested is disconnected, the second one-way valve 22 is opened, the first one-way valve 13 is closed, and normal temperature gas flows into the first air duct 4, acting on the surface of the temperature limiter 5 to be tested until the contact of the temperature limiter 5 to be tested is reset, and the heat dissipation component 2 stops working; and the cycle continues. The temperature limiter life test device collects the action status of the temperature limiter 5 to be tested through the current transformer, and the PLC receives the on-off status of the current signal collected by the transformer for the experimental count.

[0055] According to a preferred embodiment, the temperature limiter of this embodiment is a temperature limiter of an air-conditioning motor or an electric heating component. Not limited thereto, the temperature limiter of this embodiment can also be a temperature limiter on other electrical components.

[0056] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions 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 device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0058] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A temperature limiter life test device, characterized in that: It comprises a heating component (1), a heat dissipation component (2), a test carrier (3) and a first air duct (4), wherein: The temperature limiter (5) to be tested is mounted on the test vehicle (3) located above the air outlet of the first air duct (4); an opening is provided on a side of the test vehicle (3) close to the air outlet of the first air duct (4); the heating component (1) and the heat dissipation component (2) are located at two ends of the first air duct (4); the hot air generated by heating of the heating component (1) flows out through the air outlet of the first air duct (4) and heats the temperature limiter (5) to be tested; the heat dissipation component (2) introduces ambient room temperature air into the first air duct (4) and flows out through the air outlet to cool the temperature limiter (5) to be tested; The required temperature is provided for the opening and closing of the contacts of the temperature limiter (5) to be tested by the heating component (1) and the heat dissipation component (2), and the life of the temperature limiter (5) to be tested is measured by recording the number of times the contacts of the temperature limiter (5) to be tested are opened and / or closed; The heating assembly (1) comprises a heater (11), a second air duct (12), a first one-way valve (13) and a first fan, wherein the first one-way valve (13) is arranged at an end of one end of the first air duct (4), the second air duct (12) is located between the heater (11) and the first one-way valve (13), and the first fan is located in the second air duct (12), so that the hot air generated by the heating of the heater (11) is sent into the first air duct (4) through the second air duct (12) and the first one-way valve (13) in sequence by the first fan; The heat dissipation component (2) comprises a third air duct (21), a second one-way valve (22) and a second fan, wherein the second one-way valve (22) is arranged between the first air duct (4) and the third air duct (21), and the second fan is located in the third air duct (21), so that ambient air at normal temperature is introduced into the third air duct (21) through the second fan and then sequentially sent into the first air duct (4) through the third air duct (21) and the second one-way valve (22).

2. The temperature limiter life test device according to claim 1, characterized in that: It also comprises a load component (6), and the temperature limiter (5) to be tested is connected to the load component (6), and current is provided to the temperature limiter (5) to be tested via the load component (6).

3. The temperature limiter life test device according to claim 2, characterized in that: It also comprises a controller component (7), the controller component (7) being connected to the heating component (1), the heat dissipation component (2) and the load component (6), so as to control the working states of the heating component (1), the heat dissipation component (2) and the load component (6) through the controller component (7); The controller component (7) is also connected to the first air duct (4) and the temperature limiter (5) to be tested, so as to collect the temperature in the first air duct (4), the temperature and / or the current of the temperature limiter (5) to be tested through the controller component (7).

4. The temperature limiter life test device according to claim 1, characterized in that: The test carrier (3) is provided with a plurality of test stations (31) and station connection terminals (32), wherein: The test station (31) is used to place the temperature limiter (5) to be tested, and the temperature limiter (5) to be tested is also connected in series with the load component (6) via the station wiring terminal (32); and An opening is provided on one side of the test station (31) close to the air outlet of the first air duct (4), so that hot air or normal temperature air flowing out through the air outlet of the first air duct (4) can flow upward and contact the surface of the temperature limiter (5) to be tested on the test station (31).

5. The temperature limiter life test device according to claim 4, characterized in that: The test station (31) corresponds one-to-one to the air outlet on the first air duct (4). The temperature limiter (5) to be tested on the test station (31) is heated by the hot air flowing out of the air outlet, or the temperature limiter (5) to be tested on the test station (31) is cooled by the normal temperature air flowing out of the air outlet.

6. The temperature limiter life test device according to claim 2, characterized in that: The load component (6) comprises a terminal (61) and a resistive component (62), wherein: The terminal (61) is connected to a power source, one end of the resistive component (62) is connected to the terminal (61), and the other end is connected in series with the temperature limiter (5) to be tested via a workstation terminal (32).

7. The temperature limiter life test device according to claim 3, characterized in that: The controller component (7) comprises a touch screen, a PLC controller, a current transformer and a temperature measuring device, wherein: The touch screen is used to display data and / or input instructions; The PLC controller is used to control the working states of the heating component (1), the heat dissipation component (2) and the load component (6); The current transformer is used to collect the current of the temperature limiter (5) to be tested; The temperature measuring device is used to collect the temperature in the first air duct (4) and / or the temperature of the temperature limiter (5) to be tested.

8. The temperature limiter life test device according to claim 7, characterized in that: The PLC controller is connected to the current transformer, and the PLC controller also records the number of times the contacts of the temperature limiter (5) to be tested are opened and / or closed based on the current signal collected by the current transformer.

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