Power test equipment for PTC (Positive Temperature Coefficient) heater

Abstract

The utility model relates to the technical field of new energy automobile air conditioner heating and electric heater test equipment of household appliances, and discloses PTC heater power test equipment, which comprises a placement table, a test assembly, an air supply assembly and a display assembly. The placement table is used for placing the PTC heater; the test assembly is arranged on the placement table, and the test assembly is connected with the PTC heater placed on the placement table; the air supply assembly communicates with the placement table and is used for providing airflow towards the placement table; the display assembly is connected with the test assembly. The test assembly is connected with the display assembly, after the PTC heater is connected with the power supply, the test assembly records the voltage, current, power and resistance changes of the PTC heater and displays the changes on a resistance meter of the display assembly, so that the test result does not need to be manually checked in real time, and the test efficiency is improved by adjusting the wind speed, the power and the current. And the performance of different products can be tested.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heater testing equipment for new energy automobile air conditioning heating and household appliances, in particular to a PTC heater power testing equipment. Background Art

[0002] PTC heater is a heating element based on the positive temperature coefficient (PTC) characteristic. PTC material is a thermistor material whose resistance value increases with the increase of temperature. When the PTC material is heated, the increase in resistance can limit the flow of current, thereby producing a heating effect. PTC heaters are widely used in home appliances, automobiles, industrial equipment and other fields, such as electric kettles, coffee machines, ovens, car seat heaters, etc.

[0003] Currently, the power of a PTC heater is tested by a PTC heater power test device. However, the current PTC heater power test device does not have the function of automatic testing and automatic display of test results, resulting in workers needing to view the test results in real time when performing power tests and impulse current tests on PTC heaters. Utility Model Content

[0004] The embodiment of the utility model aims to provide a PTC heater power testing device to solve the technical problem that the PTC heater power testing device in the prior art does not have the functions of automatic testing and automatic display of test results.

[0005] The utility model embodiment solves its technical problems by adopting the following technical solutions:

[0006] Provided is a PTC heater power test device, comprising:

[0007] A placement table, the placement table is used to place the PTC heater;

[0008] A test component, the test component is arranged on the placement table, and the test component is connected to the PTC heater placed on the placement table;

[0009] An air supply component, the air supply component is connected to the placement table, and the air supply component is used to provide airflow toward the placement table;

[0010] A display component is connected to the test component.

[0011] In some embodiments, the test assembly includes a test needle and a test cylinder;

[0012] The test cylinder is movably arranged on a side of the placement table, and the test cylinder is connected to the test needle;

[0013] The test pin is connected to the display component.

[0014] In some embodiments, an air inlet and an air outlet are respectively provided at both ends of the placement table, and the interior of the placement table is hollowed out, the air supply component is connected to the air inlet, and the airflow generated by the air supply component can enter the placement table through the air inlet and flow out through the air outlet of the placement table.

[0015] In some embodiments, the PTC heater is disposed on the air outlet of the placement table.

[0016] In some embodiments, a wind speed test component is further included, and the wind speed test component is disposed on the placement table and close to the air outlet.

[0017] In some embodiments, the wind speed test assembly includes an anemometer and a rotating cylinder;

[0018] The rotating cylinder is arranged on the placing table;

[0019] The rotating cylinder is connected to the anemometer, and the rotating cylinder can drive the anemometer to rotate.

[0020] In some embodiments, a wind shield is also included, and the wind shield is movably disposed on both sides of the air outlet.

[0021] In some embodiments, a slide groove is provided on the placement platform, and the wind shield is accommodated in the slide groove.

[0022] Compared with the prior art, the PTC heater power test device provided in the embodiment of the utility model includes a placement table, a test component, an air supply component and a display component. The placement table is used to place the PTC heater; the test component is arranged on the placement table, and the test component is connected to the PTC heater placed on the placement table; the air supply component is connected to the placement table, and the air supply component is used to provide airflow toward the placement table; the display component is connected to the test component. By connecting the test component with the display component, after the PTC heater is connected to the power supply, the test component records the voltage, current, power, and resistance changes of the PTC heater and presents them on the resistance meter of the display component, so that there is no need to manually check the test results in real time, and by adjusting the wind speed, power, and current, the performance of different products can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] Figure 1 It is a schematic diagram of the structure of a PTC heater power test device provided by one embodiment of the utility model;

[0025] Figure 2 It is a partial structural schematic diagram of a PTC heater power test device provided by one embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of a placement table of a PTC heater power test device provided by one embodiment of the utility model.

[0027] Reference numerals:

[0028] 100. PTC heater power test equipment; 10. Placement table; 11. Air inlet; 12. Air outlet; 20. Test component; 21. Test needle; 22. Test cylinder; 30. Air supply component; 31. Blower; 40. Display component; 50. Wind speed test component; 51. Anemometer; 52. Rotating cylinder; 60. Wind shield. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connecting" another element, it can be directly on another element, or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] In the embodiment of the utility model, the PTC heater power testing device can be used to test the performance of the PTC heater.

[0032] Combine the following Figures 1 to 3 , the PTC heater power testing device provided in the embodiment of the present application is described in detail through specific examples.

[0033] Please also read Figures 1 to 3 , Figure 1 It is a schematic diagram of the structure of a PTC heater power test device provided by one embodiment of the utility model; Figure 2 It is a partial structural schematic diagram of a PTC heater power test device provided by one embodiment of the utility model; Figure 3 It is a structural schematic diagram of a placement table of a PTC heater power test device provided in one embodiment of the present invention. The PTC heater power test device 100 provided in one embodiment of the present invention includes a placement table 10, a test component 20, an air supply component 30 and a display component 40. The placement table 10 is used to place a PTC heater; the test component 20 is arranged on the placement table 10, and the test component 20 is connected to the PTC heater placed on the placement table 10; the air supply component 30 is connected to the placement table 10, and the air supply component 30 is used to provide airflow toward the placement table 10; the display component 40 is connected to the test component 20.

[0034] The PTC heater is placed on the placement table 10 and connected to the test assembly 20. Specifically, the test assembly 20 and the thermistor of the PTC heater are in contact with each other. When the PTC heater is powered by a DC or AC power source, as the PTC heater is heated, the test assembly 20 can record the resistance change of the PTC heater at this time and present it on the resistance meter of the display assembly 40.

[0035] Moreover, at this time, the air supply component 30 can supply air to the PTC heater, and by controlling the wind speed, simulate the wind speed conditions in different usage environments, so as to test the heating effect, temperature distribution, heat loss and other parameters of the PTC heater under different wind speeds, and then evaluate the performance of the PTC heater under different environmental conditions.

[0036] In this embodiment, by connecting the test component 20 with the display component 40, after the PTC heater is connected to the power supply, the test component 20 records the voltage, current, power, and resistance changes of the PTC heater and presents them on the resistance meter of the display component 40, thereby eliminating the need for manual real-time viewing of the test results, and by adjusting the wind speed, power, and current, the performance of different products can be tested.

[0037] In some embodiments, the test component 20 includes a test needle 21 and a test cylinder 22; the test cylinder 22 is movably disposed on a side of the placement table 10, and the test cylinder 22 is connected to the test needle 21; the test needle 21 is connected to the display component 40.

[0038] The test needle 21 is in contact with the PTC heater. The test needle 21 may be one or more thin and long metal conductive needles for contacting the thermistor of the PTC heater. The temperature change of the PTC heater can be monitored in real time through the test needle 21 to evaluate its heating effect, temperature control and stability.

[0039] The test needle 21 is arranged on the test cylinder 22, and the test cylinder 22 is movably arranged on the placement table 10. If different products need to be tested, the contact position between the test needle 21 and the product is different. The test cylinder 22 can be started, and the test cylinder 22 drives the test needle 21 to move to adjust its position, so that the position of the test needle 21 can correspond to the position of the product. Through such a setting, the PTC heater power test device 100 can adapt to PTC heaters of different sizes to test PTC heaters of different specifications and sizes.

[0040] In some embodiments, an air inlet and an air outlet are respectively provided at both ends of the placing platform 10, and the placing platform 10 is hollowed out inside, the air supply component 30 is connected to the air inlet, and the airflow generated by the air supply component 30 can enter the placing platform 10 through the air inlet and flow out through the air outlet of the placing platform 10. The PTC heater is arranged on the air outlet of the placing platform 10.

[0041] The air supply assembly 30 includes a blower 31 and an air duct, the air outlet of the blower 31 is connected to the air duct, and the air duct is connected to the air inlet of the placement table 10. When the blower 31 is started, the blower 31 can generate airflow and enter the air duct through the air outlet, and then enter through the air duct to pass through the air inlet and outlet of the placement table 10 and the PTC heater in sequence.

[0042] Furthermore, the wind speed conditions in different use environments can be simulated by controlling the wind speed of the blower 31. The heating effect, temperature distribution, heat loss and other parameters of the PTC heater under different wind speeds can be tested.

[0043] In some embodiments, a wind speed test assembly 50 is also included, and the wind speed test assembly 50 is arranged on the placement table 10 and close to the air outlet. The wind speed test assembly 50 can be used to measure the speed of air flow. Wind speed has an important influence on the heat dissipation and temperature distribution of the PTC heater. In actual use, the PTC heater is usually installed in a device with a fan or an air duct to dissipate heat through air flow. Therefore, by equipping the PTC heater placement table 10 with a wind speed test assembly 50, the speed of air flow can be measured in real time. During the test, the position and parameters of the wind speed test assembly 50 can be adjusted to simulate different wind speed conditions. By measuring the heating effect, temperature distribution, heat loss and other parameters of the PTC heater at different wind speeds, the performance of the PTC heater under different environmental conditions can be evaluated.

[0044] In some embodiments, the wind speed testing assembly 50 includes an anemometer 51 and a rotating cylinder 52; the rotating cylinder 52 is disposed on the placement table 10; the rotating cylinder 52 is connected to the anemometer 51, and the rotating cylinder 52 can drive the anemometer 51 to rotate.

[0045] Among them, the anemometer 51 can be used to test the speed of air flow. And the anemometer 51 is set on the rotating cylinder 52, and the anemometer 51 can be driven by the rotating cylinder 52 to rotate on the placement table 10, so as to adjust the position of the anemometer 51. When testing PTC heaters of different sizes, the flow direction of the airflow may change at this time. If the position of the anemometer 51 is fixed, it is difficult to accurately measure the wind speed at this time. By rotating the rotating cylinder 52 to rotate and drive the anemometer 51 to adjust its position, so that the anemometer 51 can be located in the flow direction of the airflow, the wind speed can be accurately measured, so that the PTC heater power test equipment 100 can adapt to PTC heaters of different sizes.

[0046] In some embodiments, a windshield 60 is also included, and the windshield 60 is movably arranged on both sides of the air outlet. The windshield 60 can be used to block or reduce the speed of air flow and reduce the wind speed. This helps to simulate the performance test under low wind speed conditions to evaluate the heating effect and temperature distribution of the PTC heater under different wind speeds. In addition, when performing the performance test of the PTC heater, the windshield 60 can help maintain consistent environmental conditions. By fixing the position of the windshield 60, a relatively stable wind speed and wind direction can be maintained, making the test results more reliable and comparable.

[0047] In some embodiments, a slide groove is provided on the placement table 10, and the wind shield 60 is accommodated in the slide groove. Thus, the wind shield 60 can move in the slide groove, so that the speed and airflow volume of the air blocked by the wind shield 60 can be adjusted. Through such a setting, the direction of air flow can be changed by adjusting the position of the wind shield 60. This helps to simulate wind flows in different directions to evaluate the performance and working stability of the PTC heater under different wind directions.

[0048] It should be particularly noted that the PTC heater power testing device 100 provided in the embodiment of the utility model only shows the part related to the technical problem to be solved by the embodiment of the utility model. It can be understood that the PTC heater power testing device 100 provided in the embodiment of the utility model also includes other structures for realizing the functions of the PTC heater power testing device 100.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A PTC heater power test device, characterized in that: include: A placement table, the placement table is used to place the PTC heater; A test component, the test component is arranged on the placement table, and the test component is connected to the PTC heater placed on the placement table; An air supply component, the air supply component is connected to the placement table, and the air supply component is used to provide airflow toward the placement table; A display component is connected to the test component.

2. The PTC heater power test equipment according to claim 1, characterized in that: The test assembly includes a test needle and a test cylinder; The test cylinder is movably arranged on a side of the placement table, and the test cylinder is connected to the test needle; The test pin is connected to the display component.

3. The PTC heater power test equipment according to claim 2, characterized in that: An air inlet and an air outlet are respectively provided at both ends of the placing table, and the interior of the placing table is hollowed out. The air supply component is connected to the air inlet, and the airflow generated by the air supply component can enter the placing table through the air inlet and flow out through the air outlet of the placing table.

4. The PTC heater power test device according to claim 3, characterized in that: The PTC heater is arranged on the air outlet of the placing table.

5. The PTC heater power test device according to claim 4, characterized in that: It also includes a wind speed test component, which is arranged on the placement table and close to the air outlet.

6. The PTC heater power test device according to claim 5, characterized in that: The wind speed test assembly includes an anemometer and a rotating cylinder; The rotating cylinder is arranged on the placing table; The rotating cylinder is connected to the anemometer, and the rotating cylinder can drive the anemometer to rotate.

7. The PTC heater power test device according to claim 6, characterized in that: It also includes a wind shield, which is movably arranged on both sides of the air outlet.

8. The PTC heater power test device according to claim 7, characterized in that: The placing platform is provided with a slide groove, and the wind shield is accommodated in the slide groove.

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