Electric Heater Comprehensive Tester and Its Usage Method

Abstract

The present invention belongs to the field of electric heater testers, especially an integrated electric heater tester and its usage method. Aiming at the problems that the existing electric heaters are not convenient for withstand voltage testing, cannot well detect their heating performance, and cannot remind the staff before detection, the following solution is proposed. The integrated electric heater tester includes a box body, a withstand voltage testing structure, a performance testing structure, and a warning structure. A motor is fixedly connected to the inner wall of the top of the box body, a push plate is fixedly connected to the output shaft of the motor, three ohmmeters and an intermediate relay are arranged on the inner wall of the bottom of the box body, a U-shaped frame is fixedly connected to the top of the box body, and the withstand voltage testing structure is used in cooperation with the warning structure. The present invention is convenient for performing withstand voltage testing on electric heaters, can well detect their heating performance, and can remind the staff before detection.

Description

Technical Field

[0001] The present invention relates to the technical field of electric heater testers, and particularly to an integrated electric heater tester and its usage method. Background Art

[0002] An electric heater is a heating device composed of a ceramic heating element and an aluminum tube, etc.; PTC heating elements are gradually widely used in various fields due to their characteristics of small thermal resistance, high heat exchange efficiency, automatic constant temperature, power saving, etc.

[0003] After retrieval, a PTC heater insulation withstand voltage test device disclosed in the authorized announcement number CN208937677U includes a withstand voltage tester, the withstand voltage tester is electrically connected to a ground wire and a high-voltage test rod, and further includes a mounting plate for connecting an automatic aging test device. The high-voltage test rod is connected to the mounting plate, and its test end faces one side of the PTC heater. The test end of the high-voltage test rod is connected with a contact wire bundle for sweeping over the wires of the PTC heater. The contact wire bundle is conductive and elastic. It can better cooperate with the automatic aging test device to perform automatic tests on the PTC heater, thus being safer and more efficient.

[0004] However, before the electric heater leaves the factory, it is not possible to perform a good withstand voltage test on the electric heater, which will affect the quality of the electric heater. And before testing the electric heater, it is not possible to remind the staff, which may lead to mistakes during the work process, and it is not possible to detect its heating performance well. Therefore, an integrated electric heater tester and its usage method are proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages in the prior art that the electric heater is not convenient for withstand voltage testing, its heating performance cannot be detected well, and the staff cannot be reminded before detection, and to propose an integrated electric heater tester and its usage method.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solution:

[0007] An integrated electric heater tester includes a box body, a withstand voltage test structure, a performance test structure, and a warning structure. A motor is fixedly connected to the inner wall of the top of the box body, a push plate is fixedly connected to the output shaft of the motor, three resistance meters and an intermediate relay are arranged on the inner wall of the bottom of the box body, a U-shaped frame is fixedly connected to the top of the box body, and the withstand voltage test structure is used in cooperation with the warning structure.

[0008] Preferably, the voltage withstand test structure includes a wire and a detection end. Two top holes are formed in the top of the box body. A square plate is fixedly connected in the top hole. A sleeve plate is slidably sleeved on the outer side of the square plate. An installation hole is formed in one side of the sleeve plate. The detection end is fixedly installed in the installation hole. The wire is connected to the detection end. The wire is connected to the corresponding resistance meter and intermediate relay. A hinge plate is hinged between the push plate and the sleeve plate.

[0009] Preferably, the warning structure includes two conductive sheets and a warning lamp. The warning lamp is fixedly installed on the top of the U-shaped frame. A cross plate is fixedly connected in the box body. A rotating hole is formed in the top of the cross plate. A rotating shaft is rotatably installed in the rotating hole. A vertical plate is fixedly connected to the bottom of the push plate. An extrusion block is fixedly connected to one side of the vertical plate. An annular groove is formed on the outer side of the rotating shaft. The extrusion block is slidably installed in the annular groove. A cam is fixedly connected to the bottom end of the rotating shaft. A support plate is fixedly connected to the bottom of the cross plate. A sliding hole is formed in one side of the support plate. A sliding plate is slidably installed in the sliding hole. A connecting plate is fixedly connected to one side of the sliding plate. One side of the connecting plate is in contact with the cam. A first spring is welded to one side of the connecting plate. One end of the first spring is welded to one side of the support plate. The two conductive sheets are respectively fixedly installed on the sides of the support plate and the connecting plate close to each other.

[0010] Preferably, the performance test structure includes a storage box and a timer. A bottom hole is formed in the bottom of the storage box. A heat conducting rod is fixedly connected in the bottom hole. A sealing plate is slidably and hermetically installed in the storage box. Nitrogen is filled below the sealing plate. An L-shaped plate and a guide plate are fixedly connected to the top of the sealing plate. A second spring is welded to the top of the L-shaped plate. The top end of the second spring is welded to the inner wall of the top of the storage box. A circular hole is formed in the top of the storage box. The timer is fixedly installed on the top of the storage box. A starting end and a closing end are respectively fixedly connected to the top and bottom of the timer.

[0011] Preferably, the two conductive sheets and the warning lamp are connected in series in turn to form a circuit.

[0012] Preferably, the guide plate is directly below the closing end.

[0013] Preferably, baffle plates are fixedly connected to the inner walls on both sides of the storage box. The L-shaped plate is in contact with the tops of the baffle plates.

[0014] A method for using the above-mentioned comprehensive tester for electric heaters includes the following steps:

[0015] S1: Place the electric heater on the top of the box body, then start the motor. The output shaft of the motor drives the push plate to move downward. The push plate drives the hinged plate to rotate, and the hinged plate drives the sleeve plate to move, causing the two sleeve plates to move towards each other. The sleeve plate drives the detection end to move until the two sleeve plates clamp and fix the electric heater. At this time, the detection end contacts the terminal of the electric heater. Then, use a resistance meter and an intermediate relay to conduct a withstand voltage test on the electric heater, and control the measurement time within two seconds to make the measurement value accurate and reduce the quality risk;

[0016] S2: When the push plate moves downward, the vertical plate will move downward. The vertical plate drives the extrusion block to move downward, which can further cause the rotating shaft to rotate. The rotating shaft drives the cam to rotate. The cam presses the connecting plate to drive the connecting plate to move. Through the set spring 1, the connecting plate can move back and forth horizontally. The connecting plate drives the sliding plate to move, which can further cause the two conductive sheets to contact repeatedly, and further cause the warning light to flash repeatedly, for warning the staff before the test;

[0017] S3: When testing the performance of the electric heater, start the electric heater and press the start end on the timer at the same time. The timer starts to work. The electric heater emits heat, and the heat conducting rod conducts the heat into the storage box. The nitrogen expands due to heat, which can further cause the sealing plate to move upward. The sealing plate drives the L-shaped plate and the guide plate to move upward. The L-shaped plate presses the spring 2 until the guide plate presses the closing end. At this time, the timer stops working. Read the time on the timer to better test the heating performance of the electric heater.

[0018] Advantages of the present invention:

[0019] (1) For the electric heater comprehensive tester proposed by the present invention, through the set withstand voltage test structure, only need to start the motor, the two sleeve plates can move towards each other to clamp and fix the electric heater. At this time, a withstand voltage test can be conducted on the electric heater through a resistance meter and an intermediate relay. The measurement time can be controlled within two seconds to make the measurement value accurate and reduce the quality risk;

[0020] (2) For the electric heater comprehensive tester proposed by the present invention, through the set performance test structure, only need to start the electric heater and then press the start end, the nitrogen can expand to drive the sealing plate to move upward until the guide plate presses the closing end. At this time, the time required for the electric heater to heat to a certain temperature can be detected through the reading on the timer;

[0021] (3) For the electric heater comprehensive tester proposed by the present invention, through the set warning structure, only need to start the motor. During the clamping process of the electric heater, the two conductive sheets can contact intermittently, and further cause the warning light to flash repeatedly, which is convenient for reminding the staff. Description of the Drawings

[0022] Figure 1 Schematic structural diagram of the comprehensive tester for electric heaters proposed by the present invention;

[0023] Figure 2 Cross-sectional structural diagram of the comprehensive tester for electric heaters proposed by the present invention;

[0024] Figure 3 is Figure 2 Schematic structural diagram of part A in;

[0025] Figure 4 is Figure 2 Schematic structural diagram of part B in;

[0026] Figure 5 is Figure 2 Schematic structural diagram of part C in.

[0027] In the figure: 1, box body; 2, ohmmeter; 3, intermediate relay; 4, square plate; 5, sleeve plate; 6, wire; 7, detection end; 8, display screen; 9, motor; 10, push plate; 11, hinge plate; 12, cross plate; 13, rotating shaft; 14, vertical plate; 15, extrusion block; 16, annular groove; 17, support plate; 18, sliding plate; 19, connecting plate; 20, cam; 21, conductive sheet; 22, first spring; 23, U-shaped frame; 24, warning lamp; 25, storage box; 26, heat conducting rod; 27, sealing plate; 28, timer; 29, L-shaped plate; 30, baffle; 31, second spring; 32, guide plate; 33, starting end; 34, closing end. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Referring to Figures 1-5 , the comprehensive tester for electric heaters includes a box body 1, a withstand voltage test structure, a performance test structure, and a warning structure. A motor 9 is fixedly connected to the inner wall of the top of the box body 1, a push plate 10 is fixedly connected to the output shaft of the motor 9, three ohmmeters 2 and an intermediate relay 3 are arranged on the inner wall of the bottom of the box body 1, a U-shaped frame 23 is fixedly connected to the top of the box body 1, and the withstand voltage test structure is used in cooperation with the warning structure.

[0030] In the present invention, the withstand voltage test structure includes a wire 6 and a detection end 7. Two top holes are opened at the top of the box body 1. A square plate 4 is fixedly connected inside the top holes. A sleeve plate 5 is slidably sleeved outside the square plate 4. An installation hole is opened on one side of the sleeve plate 5. The detection end 7 is fixedly installed in the installation hole. The wire 6 is connected to the detection end 7. The wire 6 is connected to the corresponding resistance meter 2 and intermediate relay 3. A hinge plate 11 is hinged between the push plate 10 and the sleeve plate 5. The withstand voltage test of the electric heater is carried out through the resistance meter 2 and the intermediate relay 3. The measurement time is controlled within two seconds, so that the measured value is accurate and the quality risk is reduced.

[0031] In the present invention, the warning structure includes two conductive sheets 21 and a warning lamp 24. The warning lamp 24 is fixedly installed on the top of the U-shaped frame 23. A cross plate 12 is fixedly connected inside the box body 1. A rotating hole is opened on the top of the cross plate 12. A rotating shaft 13 is rotatably installed in the rotating hole. A vertical plate 14 is fixedly connected to the bottom of the push plate 10. An extrusion block 15 is fixedly connected to one side of the vertical plate 14. An annular groove 16 is opened on the outer side of the rotating shaft 13. The extrusion block 15 is slidably installed in the annular groove 16. A cam 20 is fixedly connected to the bottom end of the rotating shaft 13. A support plate 17 is fixedly connected to the bottom of the cross plate 12. A sliding hole is opened on one side of the support plate 17. A sliding plate 18 is slidably installed in the sliding hole. A connecting plate 19 is fixedly connected to one side of the sliding plate 18. One side of the connecting plate 19 is in contact with the cam 20. A first spring 22 is welded to one side of the connecting plate 19. One end of the first spring 22 is welded to one side of the support plate 17. The two conductive sheets 21 are respectively fixedly installed on the sides of the support plate 17 and the connecting plate 19 close to each other. Before the performance test of the electric heater, that is, before the electric heater is fixed, the warning lamp can flash repeatedly to remind the staff.

[0032] In the present invention, the performance test structure includes a storage box 25 and a timer 28. A bottom hole is opened at the bottom of the storage box 25. A heat conducting rod 26 is fixedly connected inside the bottom hole. A sealing plate 27 is slidably and hermetically installed in the storage box 25. Nitrogen is filled below the sealing plate 27. An L-shaped plate 29 and a guide plate 32 are fixedly connected to the top of the sealing plate 27. A second spring 31 is welded to the top of the L-shaped plate 29. The top end of the second spring 31 is welded to the inner wall of the top of the storage box 25. A round hole is opened at the top of the storage box 25. The timer 28 is fixedly installed on the top of the storage box 25. A starting end 33 and a closing end 34 are respectively fixedly connected to the top and bottom of the timer 28, which is convenient for testing the heating performance of the electric heater and can detect the time required for the electric heater to heat to a certain temperature.

[0033] In the present invention, the two conductive sheets 21 and the warning lamp 24 are connected in series in sequence to form a loop, and the warning lamp 24 can be turned on when the conductive sheets 21 are in contact.

[0034] In the present invention, the guide plate 32 is located directly below the closing end 34, facilitating the extrusion of the closing end 34 when the guide plate 32 moves upward. Baffles 30 are fixedly connected to the inner walls on both sides of the storage box 25. The L-shaped plate 29 contacts the tops of the baffles 30, capable of limiting the L-shaped plate 29.

[0035] A usage method of the above-mentioned comprehensive tester for electric heaters includes the following steps:

[0036] S1: Place the electric heater on the top of the box body 1, then start the motor 9. The output shaft of the motor 9 drives the push plate 10 to move downward. The push plate 10 drives the hinge plate 11 to rotate. The hinge plate 11 drives the sleeve plate 5 to move, causing the two sleeve plates 5 to move towards each other. The sleeve plate 5 drives the detection end 7 to move until the two sleeve plates 5 clamp and fix the electric heater. At this time, the detection end 7 contacts the terminal of the electric heater. Then, perform a withstand voltage test on the electric heater through the ohmmeter 2 and the intermediate relay 3, controlling the measurement time within two seconds to make the measurement value accurate and reduce the quality risk.

[0037] S2: When the push plate 10 moves downward, the vertical plate 14 will move downward. The vertical plate 14 drives the extrusion block 15 to move downward, which can further cause the rotating shaft 13 to rotate. The rotating shaft 13 drives the cam 20 to rotate. The cam 20 squeezes the connecting plate 19 to drive the connecting plate 19 to move. Through the provided first spring 22, the connecting plate 19 can move back and forth horizontally. The connecting plate 19 drives the sliding plate 18 to move, which can further cause the two conductive sheets 21 to contact repeatedly, and further cause the warning lamp 24 to flash repeatedly, for warning the staff before the test.

[0038] S3: When it is necessary to test the performance of the electric heater, start the electric heater and simultaneously press the start end 33 on the timer 28. The timer 28 starts to work. The electric heater emits heat, and the heat conducting rod 26 conducts the heat into the storage box 25. The nitrogen expands due to heat, which can further cause the sealing plate 27 to move upward. The sealing plate 27 drives the L-shaped plate 29 and the guide plate 32 to move upward. The L-shaped plate 29 squeezes the second spring 31 until the guide plate 32 presses the closing end 34. At this time, the timer 28 stops working. Reading the time on the timer 28 can better test the heating performance of the electric heater.

[0039] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0040] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Electric heater comprehensive tester, comprising a box body (1), a withstand voltage test structure, a performance test structure and a warning structure, characterized in that, A motor (9) is fixedly connected to the inner wall of the top of the box body (1), a push plate (10) is fixedly connected to the output shaft of the motor (9), three resistance meters (2) and an intermediate relay (3) are arranged on the inner wall of the bottom of the box body (1), a U-shaped frame (23) is fixedly connected to the top of the box body (1), and the withstand voltage test structure is used in cooperation with the warning structure; The withstand voltage test structure includes a wire (6) and a detection end (7). Two top holes are opened in the top of the box body (1). A square plate (4) is fixedly connected in the top holes. A sleeve plate (5) is slidably sleeved on the outside of the square plate (4). An installation hole is opened on one side of the sleeve plate (5). The detection end (7) is fixedly installed in the installation hole. The wire (6) is connected to the detection end (7). The wire (6) is connected to the corresponding resistance meter (2) and the intermediate relay (3). A hinge plate (11) is hinged between the push plate (10) and the sleeve plate (5); The warning structure includes two conductive sheets (21) and a warning lamp (24). The warning lamp (24) is fixedly installed on the top of the U-shaped frame (23). A cross plate (12) is fixedly connected in the box body (1). A rotating hole is opened on the top of the cross plate (12). A rotating shaft (13) is rotatably installed in the rotating hole. A vertical plate (14) is fixedly connected to the bottom of the push plate (10). An extrusion block (15) is fixedly connected to one side of the vertical plate (14). An annular groove (16) is opened on the outside of the rotating shaft (13). The extrusion block (15) is slidably installed in the annular groove (16). A cam (20) is fixedly connected to the bottom end of the rotating shaft (13). A support plate (17) is fixedly connected to the bottom of the cross plate (12). A sliding hole is opened on one side of the support plate (17). A sliding plate (18) is slidably installed in the sliding hole. A connecting plate (19) is fixedly connected to one side of the sliding plate (18). One side of the connecting plate (19) is in contact with the cam (20). A first spring (22) is welded to one side of the connecting plate (19). One end of the first spring (22) is welded to one side of the support plate (17). The two conductive sheets (21) are respectively fixedly installed on the sides of the support plate (17) and the connecting plate (19) close to each other; The performance test structure includes a storage box (25) and a timer (28). A bottom hole is opened in the bottom of the storage box (25). A heat conducting rod (26) is fixedly connected in the bottom hole. A sealing plate (27) is slidably and hermetically installed in the storage box (25). Nitrogen is filled below the sealing plate (27). An L-shaped plate (29) and a guide plate (32) are fixedly connected to the top of the sealing plate (27). A second spring (31) is welded to the top of the L-shaped plate (29). The top end of the second spring (31) is welded to the inner wall of the top of the storage box (25). A round hole is opened on the top of the storage box (25). The timer (28) is fixedly installed on the top of the storage box (25). A starting end (33) and a closing end (34) are respectively fixedly connected to the top and the bottom of the timer (28).

2. The integrated electric heater tester according to claim 1, characterized in that, Two conductive sheets (21) and a warning light (24) are connected in series in sequence to form a circuit.

3. The integrated electric heater tester according to claim 1, characterized in that, The guide plate (32) is located directly below the closing end (34).

4. The comprehensive tester for electric heaters according to claim 1, characterized in that, On both inner walls of the storage box (25), baffles (30) are fixedly connected, and the L-shaped plate (29) contacts the top of the baffle (30).

5. A method for using the comprehensive tester for electric heaters according to any one of claims 1-4, characterized in that, It includes the following steps: S1: Place the electric heater on the top of the box body (1), then start the motor (9). The output shaft of the motor (9) drives the push plate (10) to move downward. The push plate (10) drives the hinge plate (11) to rotate. The hinge plate (11) drives the sleeve plate (5) to move, so that the two sleeve plates (5) move towards each other. The sleeve plate (5) drives the detection end (7) to move until the two sleeve plates (5) clamp and fix the electric heater. At this time, the detection end (7) contacts the terminal of the electric heater. Then, use the ohmmeter (2) and the intermediate relay (3) to perform a withstand voltage test on the electric heater, and control the measurement time within two seconds to make the measurement value accurate and reduce the quality risk. S2: When the push plate (10) moves downward, the vertical plate (14) will move downward. The vertical plate (14) drives the extrusion block (15) to move downward, which can further make the rotating shaft (13) rotate. The rotating shaft (13) drives the cam (20) to rotate. The cam (20) squeezes the connecting plate (19) to drive the connecting plate (19) to move. Through the arranged spring one (22), the connecting plate (19) can move back and forth horizontally. The connecting plate (19) drives the sliding plate (18) to move, which can further make the two conductive sheets (21) contact repeatedly, and further make the warning light (24) flash repeatedly for warning the staff before the test. S3: When it is necessary to test the performance of the electric heater, start the electric heater and press the start end (33) on the timer (28) at the same time. The timer (28) starts to work. The electric heater generates heat, and the heat conducting rod (26) conducts the heat into the storage box (25). The nitrogen expands due to heat, which can further make the sealing plate (27) move upward. The sealing plate (27) drives the L-shaped plate (29) and the guide plate (32) to move upward. The L-shaped plate (29) squeezes the spring two (31) until the guide plate (32) presses the closing end (34). At this time, the timer (28) stops working. Read the time on the timer (28) to better test the heating performance of the electric heater.

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