CN112269366A - A temperature limiter life test device - Google Patents
A temperature limiter life test device Download PDFInfo
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- CN112269366A CN112269366A CN202011077573.6A CN202011077573A CN112269366A CN 112269366 A CN112269366 A CN 112269366A CN 202011077573 A CN202011077573 A CN 202011077573A CN 112269366 A CN112269366 A CN 112269366A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
本发明公开了一种限温器寿命测试装置，涉及空调部件检测技术领域，解决了现有技术中使用电吹风对限温器寿命进行测试，造成测试结果不稳定的问题。该装置包括加热组件、散热组件、测试载具和第一风道，待测试限温器安装于位于第一风道出风口上方的测试载具上，加热组件和散热组件位于第一风道的两端，加热组件加热产生的热空气经第一风道的出风口流出并对待测试限温器加热，散热组件将外界常温空气引入第一风道并经出风口流出对待测试限温器降温，以通过加热组件和散热组件为待测试限温器触点的断开和闭合提供所需温度，并通过记录待测试限温器触点断开和/或闭合的次数测得待测试限温器寿命。利用该装置测得的限温器寿命结果稳定性好。
The invention discloses a temperature limiter life test device, 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 temperature limiter life in the prior art. The device includes a heating assembly, a heat dissipation assembly, a test vehicle and a first air duct, the temperature limiter to be tested is installed on the test vehicle above the air outlet of the first air duct, and the heating assembly and the heat dissipation assembly are located in the first air duct. At both ends, the hot air generated by the heating component flows out through the air outlet of the first air duct and is heated by the temperature limiter to be tested. 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 to measure the temperature limiter to be tested by recording the number of times the contacts of the temperature limiter to be tested are opened and/or closed life. The life results of the temperature limiter measured by this device are stable.
Description
Technical Field
The invention relates to the technical field of air conditioner component detection, in particular to a service life testing device for a temperature limiter.
Background
The temperature limiter is a temperature sensitive controller, mainly comprising a temperature sensing part, a contact and the like. In a normal state, the contact is closed, and a corresponding circuit works normally; when the temperature sensed by the temperature sensing part exceeds a set range (is lower than or higher than a certain specific temperature value), the contact is disconnected, so that a corresponding circuit is disconnected; when the temperature returns to be within the set range, the contacts are closed again, and the corresponding circuit is closed again. Therefore, the temperature limiter can limit the corresponding temperature within a set range, and plays a role in protection.
The air conditioner motor and the electric heating component belong to strong electric devices and can generate heat during work. When the working states of the motor and the electric heating component are abnormal and abnormal heat is generated, so that the surface temperatures of the motor and the electric heating component exceed the temperature value of normal working, the temperature limiters of the motor and the electric heating component can cut off the power supply, the motor and the electric heating component stop working, and the safety of the whole machine product is prevented from being influenced by thermal deformation, combustion and the like of the motor and the electric heating component. Therefore, the reliability of the service life of the motor and the temperature limiter of the electric heating part directly influences the safety of the whole machine product.
In the prior art, when the service life of the temperature limiter is tested, electric blowing hot air is used for heating the temperature limiter to be tested, and the heating is stopped when the contact of the temperature limiter to be tested is disconnected; and when the temperature limiter to be tested is cooled until the contact is closed again, starting the electric blowing hot air to heat the temperature limiter to be tested again, and repeating the steps in such a way, so as to test the service life of the temperature limiter by recording the times of opening or closing the contact of the temperature limiter to be tested. However, the prior art that uses a hair dryer to test the service life of the temperature limiter has at least the following defects: (1) the existing test tool is carried out in an open environment, the opening and closing time of a contact of the temperature limiter is greatly influenced by the ambient temperature, the airflow size, the distance between an air outlet of the electric hair drier and the temperature limiter to be tested and the like, so that the test result of the service life of the temperature limiter to be tested is unstable; (2) the existing test tool cannot simulate the circuit environment of the temperature limiter in actual use, and the contact of the temperature limiter to be detected can only be mechanically opened or closed, so that a test result has a large error with the service life of the temperature limiter in actual application.
Therefore, the improvement of the test tool in the prior art is urgently needed.
Disclosure of Invention
One of the purposes of the invention is to provide a temperature limiter service life testing device, which solves the technical problem that the testing result is unstable when a hair drier is used for testing the service life of the temperature limiter in the prior art. The various technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.
In order to achieve the purpose, the invention provides the following technical scheme:
the temperature limiter service life testing device comprises a heating component, a heat dissipation component, a testing carrier and a first air channel, wherein a temperature limiter to be tested is mounted on the testing carrier above an air outlet of the first air channel, the heating component and the heat dissipation component are located at two ends of the first air channel, hot air generated by heating of the heating component flows out through the air outlet of the first air channel and heats the temperature limiter to be tested, the heat dissipation component introduces outside normal-temperature air into the first air channel and flows out through the air outlet to cool the temperature limiter to be tested, so that required temperature is provided for disconnection and connection of contacts of the temperature limiter to be tested through the heating component and the heat dissipation component, and the service life of the temperature limiter to be tested is tested by recording the times of disconnection and/or connection of the contacts of the temperature limiter to be tested.
According to a preferred embodiment, the temperature limiter life testing device further comprises a load assembly, and the temperature limiter to be tested is connected with the load assembly and provides current for the temperature limiter to be tested through the load assembly.
According to a preferred embodiment, the temperature limiter life testing device further comprises a controller assembly, wherein the controller assembly is connected with the heating assembly, the heat dissipation assembly and the load assembly so as to control the working states of the heating assembly, the heat dissipation assembly and the load assembly through the controller assembly; the controller assembly is further connected with the first air duct and the temperature limiter to be tested, so that the temperature in the first air duct and the temperature and/or current of the temperature limiter to be tested are acquired through the controller assembly.
According to a preferred embodiment, the heating assembly comprises 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 part of one end of the first air duct, the second air duct is positioned between the heater and the first one-way valve, and the first fan is positioned in the second air duct, so that hot air generated after the heater is heated by the first fan is sequentially sent into the first air duct through the second air duct and the first one-way valve.
According to a preferred embodiment, the heat dissipation assembly comprises 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 outside normal-temperature air is introduced into the third air duct through the second fan and is sequentially sent into the first air duct through the third air duct and the second one-way valve.
According to a preferred embodiment, a plurality of test stations and station wiring terminals are arranged on the test carrier, wherein the test stations are used for placing the temperature limiter to be tested, and the temperature limiter to be tested is connected with a load component in series through the station wiring terminals; and one side of the testing station close to the first air duct air outlet is provided with an opening, so that hot air or normal-temperature air flowing out from the first air duct air outlet can flow upwards and contact with the surface of the temperature limiter to be tested on the testing station.
According to a preferred embodiment, the testing station corresponds to the air outlets on the first air duct one by one, so that the hot air flowing out of the air outlets heats the temperature limiter to be tested on the testing station, or the normal temperature air flowing out of the air outlets cools the temperature limiter to be tested on the testing station.
According to a preferred embodiment, the load assembly comprises a binding post and a resistive component, wherein the binding post is connected with a power supply, one end of the resistive component is connected with the binding post, and the other end of the resistive component is connected with the temperature limiter to be tested in series through a station wiring terminal.
According to a preferred embodiment, the controller assembly comprises a touch screen, a PLC controller, a current transformer and a temperature measuring device, wherein the touch screen is used for displaying data and/or inputting instructions; the PLC is used for controlling the working states of the heating assembly, the heat dissipation assembly and the load assembly; the current transformer is used for collecting the current of the temperature limiter to be tested; the temperature measuring device is used for collecting the temperature in the first air channel and/or the temperature of the temperature limiter to be tested.
According to a preferred embodiment, the PLC is connected with the current transformer, and the PLC also records the opening and/or closing times of the contact of the temperature limiter to be tested based on the current signal collected by the current transformer.
The service life testing device of the temperature limiter provided by the invention at least has the following beneficial technical effects:
according to the device for testing the service life of the temperature limiter, the temperature limiter to be tested is arranged on the test carrier positioned above the air outlet of the first air channel, hot air generated by heating through the heating component flows out through the air outlet of the first air channel and heats the temperature limiter to be tested, the heat dissipation component introduces outside normal-temperature air into the first air channel and flows out through the air outlet to cool the temperature limiter to be tested.
The temperature limiter service life testing device can realize rapid detection of the service life of the temperature limiter to be tested, and the stability of the measured result is good, thereby improving the capability of preventing and controlling the product quality.
In addition, the preferable technical scheme of the invention also has the following beneficial technical effects:
the temperature limiter service life testing device in the preferred technical scheme of the invention also comprises a load component, the temperature limiter to be tested is connected with the load component, and the load component provides current for the temperature limiter to be tested.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic external view of a preferred embodiment of a temperature limiter life test apparatus according to the present invention;
FIG. 2 is a schematic view of a heating assembly, a heat dissipation assembly, a test carrier and a first air duct according to the present invention;
FIG. 3 is a partially exploded schematic view of FIG. 2;
FIG. 4 is a schematic view of a preferred embodiment of a test carrier of the present invention;
FIG. 5 is a schematic view of a preferred embodiment of a test socket of the present invention;
FIG. 6 is a schematic view of another preferred embodiment of a test socket of the present invention;
FIG. 7 is a schematic view of a preferred embodiment of the load assembly of the present invention;
FIG. 8 is a schematic diagram of a preferred embodiment of a controller assembly of the present invention;
fig. 9 is a block schematic diagram of the controller assembly of the present invention connected to the remaining components.
In the figure: 1. a heating assembly; 11. a heater; 12. a second air duct; 13. a first check valve; 2. a heat dissipating component; 21. a third air duct; 22. a second one-way valve; 3. a test carrier; 31. a test station; 311. a test seat; 312. testing the card seat; 32. a station wiring terminal; 4. a first air duct; 5. a temperature limiter to be tested; 6. a load assembly; 61. a binding post; 62. a resistive component; 7. a controller assembly; 8. provided is a machine platform.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The lifetime testing device of the temperature limiter of the present embodiment will be described in detail with reference to fig. 1 to 9.
The lifetime testing device of the temperature limiter of the present embodiment includes a heating component 1, a heat dissipation component 2, a test carrier 3, and a first air duct 4, as shown in fig. 1 to 4. The temperature limiter 5 to be tested is mounted on the test carrier 3 above 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, 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 outside normal-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 that required temperature is provided for disconnection and connection of contacts of the temperature limiter 5 to be tested through the heating component 1 and the heat dissipation component 2, and the service life of the temperature limiter 5 to be tested is measured by recording the times of disconnection and/or connection of the contacts of the temperature limiter 5 to be tested, as shown in fig. 2.
As shown in fig. 1, the lifetime testing apparatus of the temperature limiter of the present embodiment further includes a machine base 8. Preferably, heating element 1, radiator unit 2 and first wind channel 4 are located inside board 8, not only can further reduce the influence of external factors such as ambient temperature, air current size to the test result, can also protect heating element 1, radiator unit 2 and first wind channel 4 through board 8. It can be known that the positions of the heating component 1, the heat dissipation component 2, and the first air duct 4 marked in fig. 1 refer to the positions of the heating component 1, the heat dissipation component 2, and the first air duct 4 inside the machine platform 8. Specifically, the structures of the heating assembly 1, the heat dissipation assembly 2 and the first air duct 4 are shown in fig. 2 or 3.
The temperature limiter life testing device of this embodiment, the temperature limiter 5 that awaits measuring is installed on the test carrier 3 that is located first wind channel 4 air outlet top, and the hot-air that produces through heating element 1 heating flows out and heats the temperature limiter 5 that awaits measuring through the air outlet in first wind channel 4, radiator unit 2 introduces external normal atmospheric temperature air into first wind channel 4 and flows out through the air outlet and cools down the temperature limiter 5 that awaits measuring, compare in the test fixture among the prior art, can reduce ambient temperature, the influence of air current size and the interval between air outlet and the temperature limiter 5 that awaits measuring to the measuring, make the result stability that utilizes the temperature limiter life testing device of this embodiment to measure good, use hairdryer to test the temperature limiter life among the prior art, cause the unstable technical problem of test result.
By utilizing the service life testing device of the temperature limiter, the service life of the temperature limiter 5 to be tested can be quickly detected, and the tested result has good stability, so that the product quality prevention and customs control capabilities can be improved.
According to a preferred embodiment, the temperature limiter life test device further comprises a load assembly 6, as shown in fig. 1. Preferably, the temperature limiter to be tested 5 is connected to the load assembly 6 and supplies current to the temperature limiter to be tested 5 through the load assembly 6. Similarly, the position of the load assembly 6 indicated in fig. 1 refers to the position of the load assembly 6 inside the machine platform 8. Specifically, the structure of the load module 6 is shown in fig. 7. According to the preferred technical scheme, the load assembly 6 can simulate the circuit environment of the temperature limiter 5 to be tested in actual application, so that the test result is closer to the service life of the temperature limiter in actual application, and the technical problem that the test result and the service life of the temperature limiter in actual application have large errors due to the fact that the test tool in the prior art cannot simulate the circuit environment of the temperature limiter in actual application is solved.
According to a preferred embodiment, the temperature limiter life test device further comprises a controller assembly 7, as shown in fig. 1. Preferably, the controller assembly 7 is connected with the heating assembly 1, the heat dissipation assembly 2 and the load assembly 6, so as to control the working states of the heating assembly 1, the heat dissipation assembly 2 and the load assembly 6 through the controller assembly 7, as shown in fig. 9. Preferably, the controller assembly 7 is also connected to the first wind tunnel 4 and the temperature limiter 5 to be tested, so as to collect the temperature in the first wind tunnel 4, the temperature of the temperature limiter 5 to be tested and/or the current through the controller assembly 7, as shown in fig. 9. The temperature limiter service life testing device of the preferred technical scheme of this embodiment further comprises a controller assembly 7, the controller assembly 7 is used for controlling the working states of the heating assembly 1, the heat dissipation assembly 2 and the load assembly 6, and the controller assembly 7 is used for collecting the temperature in the first air duct 4 and the temperature and/or current of the temperature limiter 5 to be tested, so that the service life of the temperature limiter 5 to be tested can be automatically tested, the labor intensity of workers is reduced, and the testing efficiency and accuracy are improved.
According to a preferred embodiment, the heating assembly 1 comprises a heater 11, a second air duct 12, a first one-way valve 13 and a first fan, as shown in fig. 2 or 3. The first check valve 13 is disposed 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 check valve 13, and the first fan is located in the second air duct 12, so that hot air generated by heating the heater 11 by the first fan is sequentially sent into the first air duct 4 through the second air duct 12 and the first check valve 13. Preferably, the heater 11 is an electric heating wire or an electric heating device made of other materials, and is used for heating air.
According to a preferred embodiment, the radiator module 2 comprises a third air duct 21, a second one-way valve 22 and a second fan, as shown in fig. 2 or 3. The second check valve 22 is disposed 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 second fan introduces the ambient air into the third air duct 21 and sends the ambient air into the first air duct 4 through the third air duct 21 and the second check valve 22 in sequence.
With reference to fig. 2, it is specifically illustrated how the heating assembly 1 and the heat dissipating assembly 2 are realized to provide the desired temperature for the opening and closing of the contacts 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 assembly 1 is started, air is heated through the heater 11, the first one-way valve 13 of the heating assembly 1 is in an open state, the second one-way valve 22 of the heat dissipation assembly 2 is in a closed state, hot air generated after the heater 11 is heated by the first fan is sent into the first air channel 4, and the hot air flows out through the air outlet above the first air channel 4 to heat the temperature limiter 5 to be tested. When the temperature limiter 5 to be tested is heated until the contact is disconnected, the heating is stopped, namely 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 assembly 2 is in an open state, the first one-way valve 13 of the heating assembly 1 is in a closed state, 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. The contact of the temperature limiter 5 to be tested can be alternatively opened and closed by circulating the steps.
According to a preferred embodiment, a plurality of test stations 31 and station terminals 32 are provided on the test carrier 3, as shown in fig. 4. The testing station 31 is used for placing the temperature limiter 5 to be tested, and the temperature limiter 5 to be tested is further connected with the load component 6 in series through the station wiring terminal 32. Preferably, one surface of the testing station 31 close to the air outlet of the first air duct 4 is provided with an opening, so that the hot air or the normal temperature air flowing out through the air outlet of the first air duct 4 can flow upwards and contact with the surface of the temperature limiter 5 to be tested on the testing station 31.
Preferably, the test station 31 may be circular, square, etc. The temperature limiter 5 to be tested can be fixed on the testing station 31 in a fixing piece connection or clamping manner. The test carrier 3 of the preferred technical scheme of this embodiment is provided with a plurality of test stations 31, and the test stations 31 are in different shapes, so that the test carrier 3 can be applied to the temperature limiter 5 to be tested with different appearance shapes, and the application range is wide.
Preferably, test station 31 includes a test socket 311 and a test socket 312, as shown in FIG. 4. More preferably, in a preferred technical solution of this embodiment, an opening is formed in a surface of the testing base 311 close to the air outlet of the first air duct 4, so that the hot air or the 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 testing station 31. The openings in the test socket 311 are shown in fig. 5 or 6. More preferably, in the preferred technical solution of this embodiment, the bottom surface of the test card seat 312 has a circular through hole, so that the hot air or the 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. More preferably, test socket 311 and test socket 312 are made of aluminum material.
According to a preferred embodiment, the testing station 31 corresponds to the air outlets on the first air duct 4 one by one, so that the hot air flowing out through the air outlets heats the temperature limiter 5 to be tested on the testing station 31, or the normal temperature air flowing out through the air outlets cools the temperature limiter 5 to be tested on the testing station 31. In the preferred technical scheme of this embodiment, the test stations 31 correspond to the air outlets on the first air duct 4 one to one, which means that the number and positions of the test stations 31 correspond to the number and positions of the air outlets on the first air duct 4 one to one, so that the effects of heating and cooling the temperature limiter 5 to be tested by hot air and normal temperature air flowing out of the air outlets can be improved.
According to a preferred embodiment, the load assembly 6 includes a post 61 and a resistive component 62, as shown in FIG. 7. The binding post 61 is connected with a power supply, one end of the resistive component 62 is connected with the binding post 61, and the other end of the resistive component is connected with the temperature limiter 5 to be tested in series through the station wiring 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. In the preferred technical scheme of the embodiment, the resistance devices such as the resistance wire or the heating wire provide current load for the temperature limiter 5 to be tested, and the method has the advantages of low cost and good reliability.
According to a preferred embodiment, the controller assembly 7 comprises a touch screen, a PLC controller, a current transformer and a temperature measuring device. The mounting position and structure of the controller assembly 7 are shown in fig. 1 and 8. Preferably, the touch screen is used for displaying data and/or inputting instructions. Preferably, the PLC controller is used to control the operating states of the heating assembly 1, the heat dissipation assembly 2 and the load assembly 6. Specifically, the PLC controller controls the heating assembly 1, the heat dissipation assembly 2, and the load assembly 6 to be in an on state or an off state. Preferably, the current transformer is used for collecting the current of the temperature limiter 5 to be tested. Preferably, the temperature measuring device is used for acquiring the temperature in the first air duct 4 and/or the temperature of the temperature limiter 5 to be tested.
The controller component 7 of the preferred technical scheme of the embodiment comprises a touch screen, a PLC (programmable logic controller), a current transformer and a temperature measuring device, wherein the touch screen is used for displaying various experimental parameters and triggering a control program; the PLC controller can be used for controlling the opening and closing of the first one-way valve 13 and the second one-way valve 22 after writing a program, recording the experiment times of the temperature limiter 5 to be tested, and controlling the heating component 1 and the radiating component 2 to be opened in turn; the current transformer is mainly used for collecting the current of the temperature limiter 5 to be tested, monitoring the report of a sample through the change of the current and judging whether a contact is damaged or not; the temperature measuring device is used for collecting the temperature in the first air duct 4 in real time and/or monitoring the temperature of the temperature limiter 5 to be tested. Preferably, the touch screen, the PLC controller, the current transformer, and the temperature measuring device in the preferred technical solution of this embodiment use the structure in the prior art, which is not described herein again.
According to a preferred embodiment, the PLC controller is connected to a 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. According to the preferable technical scheme of the embodiment, the PLC is used for recording the opening and/or closing times of the contact of the temperature limiter 5 to be tested, and compared with a testing tool in the prior art, the labor intensity of workers can be reduced.
It should be understood that the parts of the controller assembly 7 according to the preferred embodiment of the present invention can be implemented by hardware, software, firmware or a combination thereof, such as the touch screen, the PLC controller, the current transformer, the temperature measuring device, etc. mentioned in the preferred embodiment of the present invention. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
The working principle of the service life testing device of the temperature limiter is as follows: the temperature limiter 5 to be tested is placed in the testing station 31, the first one-way valve 13 is opened after the temperature limiter service life testing device is powered on, the second one-way valve 22 is closed, the first fan runs, hot air flows into the first air channel 4, the temperature limiter 5 to be tested is heated until the contact point acts, 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, normal-temperature gas flows into the first air channel 4 and acts 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 assembly 2 stops working; and the process is circulated. The temperature limiter service life testing device collects the action condition of the temperature limiter 5 to be tested through the current transformer, and the PLC receives the on-off condition of a current signal collected by the transformer and counts for an experiment.
According to a preferred embodiment, the temperature limiter of the embodiment is a temperature limiter of an air conditioner motor and an electric heating component. Without being limited thereto, the temperature limiter of the present embodiment may also be a temperature limiter on the remaining electric device.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011077573.6A CN112269366B (en) | 2020-10-10 | 2020-10-10 | A temperature limiter life test device |
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| CN113625161A (en) * | 2021-08-05 | 2021-11-09 | 格力电器（芜湖）有限公司 | Device and method for detecting on-off of a temperature limiter |
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