A life test fixture for heating a disc

Abstract

The utility model provides a kind of life test tool for heating disc, including test station, it is characterized by: the test station includes: support;Box, be located in the support, to accommodate test water, the box bottom is equipped with the limiting seat for limiting heating disc to be tested;Water supply part, to supply test water to the box;Valve, set on the connecting channel of the box and water supply part;Control part, to control the opening and closing of the valve.Compared with prior art, the utility model has the advantages that: the test tool utilizes the valve set on the connecting channel of the box and water supply part and the control part that controls the opening and closing of the valve, so that the water supply part that collects test water can automatically add test water to the box, thereby avoiding the need for operators to frequently add test water, to reduce the workload of operators testing heating disc.

Description

Technical Field

[0001] This utility model relates to life testing equipment, and more particularly to a life testing fixture for a dishwasher heating plate. Background Technology

[0002] Heating plates are a key component of household appliances. With the improvement of people's living standards, household appliances have become indispensable products in modern life, providing numerous conveniences. As household appliances enter countless homes, heating plates are being used in an increasing number of products, such as rice cookers, electric ovens, and dishwashers. To ensure the stability of these products, lifespan testing of the heating plate has become a crucial step in the production and research and development process.

[0003] Existing testing fixtures for testing the lifespan of heating plates typically include a testing station. During testing, the heating plate to be tested is fixed in the testing station, and testing water is injected to a suitable level. This type of testing fixture has the following problems: Because the testing water evaporates during the testing process, manual monitoring and frequent addition of testing water are required to prevent the level from dropping too low or even drying out, thus increasing the workload of the operators. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a life testing fixture that can reduce the workload of operators in light of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: the life testing fixture for heating plates includes a testing station, characterized in that: the testing station includes:

[0006] support;

[0007] The housing, mounted on the support, is used to hold the test water, and the bottom of the housing is provided with a limiting seat for limiting the heating plate to be tested;

[0008] The water supply unit is used to supply test water to the enclosure;

[0009] A valve is installed on the connection channel between the tank and the water supply unit;

[0010] The control unit is used to control the opening and closing of the valve.

[0011] To prevent the test water level in the tank from becoming too low or even boiling dry, preferably, a level sensor is installed in the tank. This level sensor is electrically connected to the control unit, which is configured to open or close the valve based on the level of the test water in the tank. During testing, when the level sensor detects that the level is below a preset value, the control unit controls the valve to open and add water to the tank; when the level sensor detects that the level has reached the preset value, the control unit controls the valve to close, thus achieving automatic water supply during testing.

[0012] Since the test water evaporates during the testing process, to avoid excessive air pressure inside the chamber, preferably, the top of the chamber is open, and the open part of the chamber is equipped with a gas collecting hood for collecting water vapor. The upper end of the gas collecting hood is connected to an exhaust pipe for discharging water vapor outdoors. In this way, water vapor can be collected by the gas collecting hood and discharged outdoors through the exhaust pipe, keeping the air pressure inside and outside the chamber stable.

[0013] To enable the gas collection hood to collect water vapor, it is preferably cone-shaped, with the upper cross-sectional area being smaller than the lower cross-sectional area. Designing the gas collection hood to be narrower at the top and wider at the bottom allows water vapor to gradually accumulate as it rises and eventually enter the exhaust pipe.

[0014] Since this lifespan testing fixture requires high-power, long-term operation, to ensure circuit safety, the enclosure is preferably also equipped with a power circuit breaker for circuit protection. If excessive power occurs during testing, posing a fire risk, the power circuit breaker can cut off the power supply when the power exceeds a safe threshold, protecting the circuit from danger.

[0015] Because heating plates in products such as rice cookers, electric ovens, and dishwashers are not standardized, and even within the same product type, there are multiple different models of heating plates, to enable this fixture to test different models of heating plates, preferably, the limiting seat includes at least two, each of which corresponds to the specifications of the heating plate to be tested. Correspondingly, the bottom of the housing has an insertion port for each limiting seat, and a sealing element is provided in the insertion port to seal each limiting seat. In this way, the limiting seat can be selected according to the specifications of the heating plate to be tested; simply insert the corresponding limiting seat into the insertion port before testing. However, due to the insertion port at the bottom of the housing, test water will flow out from the gap between the bottom of the housing and the limiting seat during testing. Therefore, a sealing element is provided at the insertion port. During testing, due to the water pressure of the test water, the limiting seat always tends to press downward against the bottom of the housing and squeeze the sealing element, maintaining a seal between the limiting seat and the bottom of the housing.

[0016] To further increase the versatility of this fixture for different types of heating plates, preferably, each of the limiting seats includes a base and at least two layers of steps that are recessed from the base and extend downward to form steps for placing the corresponding heating plate to be tested. The steps are concentrically arranged, with the diameter of the lower step smaller than the diameter of the upper step, and a sealing ring is provided in each step. In this way, heating plates of different models can be placed in steps that match their dimensions, and one limiting seat can be used for multiple types of heating plates, reducing the need to change the limiting seat for each test and further reducing the workload of the operator.

[0017] In order to place the limiting seats at the bottom of the housing, preferably, each of the limiting seats is fastened to the bottom periphery of the housing by means of a fastening assembly.

[0018] To secure the limiting seat to the bottom perimeter of the housing, preferably, the fastening assembly includes a buckle on the bottom of the housing and a hook on the seat. The buckle includes a fixing part fixed to the bottom of the housing, an actuating part rotatably connected to the fixing part, and a retaining ring with one end engaged with the actuating part and the other end capable of engaging the hook. The retaining ring can move horizontally and rotate as the actuating part rotates. When installing the limiting seat, rotating the actuating part moves the retaining ring horizontally toward the limiting seat, and rotating the retaining ring causes it to hook onto the hook. Reversing the rotation of the actuating part moves the retaining ring horizontally away from the limiting seat and engages it with the hook. The same operation is performed when removing the limiting seat; simply rotate the retaining ring after horizontal movement to disengage it from the hook.

[0019] Compared with the prior art, the advantages of this utility model are as follows: the test fixture utilizes a valve and a control unit that controls the opening and closing of the valve on the connection channel between the tank and the water supply unit, so that the water supply unit that collects test water can automatically add test water to the tank, thereby avoiding the need for operators to frequently add test water and reducing the workload of operators testing the heating plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the limiting seat in an embodiment of the present utility model;

[0022] Figure 3 This is a side view of the limiting seat in an embodiment of the present utility model;

[0023] Figure 4 This is a top view of the limiting seat and base plate in an embodiment of this utility model;

[0024] Figure 5This is a schematic diagram of the fastener structure in an embodiment of the present utility model;

[0025] Figure 6 This is a side view of the fastener in an embodiment of the present invention. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1-6 The diagram shows a preferred embodiment of the layer door lock of this utility model. (See attached image.) Figure 1 The life testing fixture for the heating plate in this embodiment includes a testing station, which includes a support 1, a housing 2 mounted on the support 1 to hold the test water, a limiting seat 3 located at the bottom of the housing 2 to limit the heating plate to be tested, a water supply unit (not shown in the figure) to supply test water to the housing 2, a valve 5 located on the connection channel 24 between the housing 2 and the water supply unit, a control unit (not shown in the figure) to control the opening and closing of the valve 5, and a relay (not shown in the figure) to control the working time of the fixture. The bottom of the limiting seat 3 is connected to a neutral wire and a live wire to supply power to the heating plate during the test. During the test, the test water is heated by the heating plate and evaporates, and the liquid level of the test water in the testing fixture will gradually decrease or even dry up. Therefore, a liquid level sensor 21 is installed in the housing 2. The liquid level sensor 21 is electrically connected to the control unit, so that the control unit is configured to open or close the valve 5 according to the liquid level of the test water in the housing 2. During testing, when the liquid level sensor 21 detects that the liquid level is lower than the preset value, the control unit controls the valve 5 to open and add water to the tank 2; when the liquid level sensor 21 detects that the liquid level has reached the preset value, the control unit controls the valve 5 to close, thereby realizing automatic water supply during testing, avoiding the trouble of manually monitoring the liquid level and frequently adding test water, and reducing the workload of operators.

[0028] To discharge the water vapor evaporated from the test water, the top of the box 2 in this embodiment is open. The open part of the box 2 is provided with a gas collection hood 22 for collecting water vapor. The gas collection hood 22 is conical, and the cross-sectional area of ​​the upper part is smaller than that of the lower part. The upper end of the gas collection hood 22 is connected to an exhaust pipe 6 for discharging water vapor outdoors. As the evaporated water vapor rises, it is gradually collected by the gas collection hood 22 with a gradually decreasing cross-sectional area and finally enters the exhaust pipe 6 and is discharged outdoors.

[0029] Because the heating plates in products such as rice cookers, electric ovens, and dishwashers are not standardized, and even within the same product type, there are multiple different models of heating plates, this embodiment of the fixture includes at least two limiting seats 3 to ensure universality. Each limiting seat 3 can correspond to the specifications of the heating plate to be tested. Correspondingly, the bottom of the housing 2 has an insertion port for each limiting seat 3 to be inserted. Due to the setting of this insertion port at the bottom of the housing 2, test water will flow out from the gap between the bottom of the housing 2 and the limiting seat 3 during testing. Therefore, a sealing element (not shown in the figure) is provided in the insertion port to seal each limiting seat 3. During testing, due to the water pressure of the test water, the limiting seat 3 always tends to press down on the bottom of the housing 2 and squeeze the sealing element, so that the limiting seat 3 and the bottom of the housing 2 remain sealed. In addition, to further reduce the workload of the operator, the applicant has also made corresponding designs on the limiting seat 3. See the specific structure of the limiting seat 3 for details. Figures 2-3 Taking the limiting seat 3 shown as an example, the limiting seat 3 includes a seat body 31 and at least two layers of steps 32 that are partially recessed from the seat body 31 and extend downward to form steps 32 for placing the corresponding heating plate to be tested. Each layer of steps 32 is concentrically arranged, and the diameter of the next layer of steps 32 is smaller than the diameter of the previous layer. After the heating plate to be tested is placed into the limiting seat 3, the concentric steps 32 rotate to place the heating plate into the step 32 of the corresponding diameter. The step 32 is designed such that the diameter of the next layer of steps 32 is smaller than the diameter of the previous layer of steps 32 so that the heating plate can automatically fall into the corresponding step 32 during rotation, avoiding the need for the operator to align the heating plate to be tested with the step 32 before placing it in. The multi-layered step 32 configuration allows one limiting seat 3 to accommodate various types of heating plates, thereby reducing the need for frequent replacement of the limiting seat 3 during testing. Each layer of steps 32 also includes a sealing ring (not shown in the figure).

[0030] See Figure 4 In this embodiment, the limiting seat 3 is fastened to the bottom periphery of the housing 2 by means of the fastening assembly 7. The fastening assembly 7 can be any structure that connects the limiting seat 3 to the bottom of the housing 2. The fastening assembly 7 in this embodiment is as follows... Figure 5-6As shown, the device includes a latch 71 located on the bottom of the housing 2 and a hook 72 located on the base 31. The latch 71 includes a fixing part 711 fixed to the bottom of the housing 2, an actuating part 712 rotatably connected to the fixing part 711, and a buckle 713 with one end linked to the actuating part 712 and the other end capable of engaging the hook 72. The buckle 713 can move horizontally and rotate as the actuating part 712 rotates. When installing the limiting seat 3, rotating the actuating part 712 moves the buckle 713 horizontally toward the limiting seat 3, and rotating the buckle 713 causes the buckle 713 to hook onto the hook 72. Reverse rotation of the actuating part 712 causes the buckle 713 to move horizontally away from the limiting seat 3 and engage with the hook 72. The same operation is performed when removing the limiting seat 3; simply rotate the buckle 713 to disengage it from the hook 72 after moving it horizontally.

[0031] In addition, since the life test fixture requires high power and long-term operation, in order to ensure circuit safety, the housing 2 of this embodiment is also equipped with a power circuit breaker 23 for protecting the circuit. The power circuit breaker 23 can cut off the power supply when the power exceeds the safety threshold, thereby protecting the circuit from danger.

[0032] In summary, the method of using the life testing fixture in this embodiment is as follows:

[0033] a. Select a suitable limiting seat 3 and fasten it to the bottom of the box 2 with the help of fastening component 7;

[0034] b. Place the heating plate to be tested into the limiting seat 3, and rotate the step 32 of the limiting seat 3 so that the heating plate is placed into the step 32 of the corresponding size;

[0035] c. Open valve 5 to supply test water into tank 2, and automatically close valve 5 after level sensor 21 detects that the liquid level has reached the preset value;

[0036] d. During the test, the liquid level sensor 21 monitors the liquid level and the controller controls the valve 5 to open and close, so that the liquid level of the test water is maintained within the preset range;

[0037] e. The working time of the tooling is controlled by a relay (e.g., power on for 1 hour and power off for 30 minutes as one cycle, repeated 3000 times before power off) to complete the enterprise standard life test or various non-standard tests.

Claims

1. A life testing fixture for a heating plate, comprising a testing station, characterized in that: The testing station includes: Frame (1); The box (2) is mounted on the bracket (1) and is used to hold the test water. The bottom of the box (2) is provided with a limiting seat (3) for limiting the heating plate to be tested. The water supply unit is used to supply test water to the housing (2); A valve (5) is installed on the connection channel (24) between the housing (2) and the water supply unit; The control unit is used to control the opening and closing of the valve (5).

2. The life testing fixture according to claim 1, characterized in that: The housing (2) is equipped with a liquid level sensor (21), which is electrically connected to the control unit. The control unit is configured to open or close the valve (5) according to the liquid level of the test water in the housing (2).

3. The life testing fixture according to claim 1 or 2, characterized in that: The top of the box (2) is open, and the open part of the box (2) is provided with a gas collecting hood (22) for collecting water vapor. The upper end of the gas collecting hood (22) is connected to an exhaust pipe (6) for discharging water vapor outdoors.

4. The life testing fixture according to claim 3, characterized in that: The gas collection hood (22) is conical, and the cross-sectional area of ​​the upper part is smaller than that of the lower part.

5. The life testing fixture according to claim 1 or 2, characterized in that: The enclosure (2) is also equipped with a power circuit breaker (23) for circuit protection.

6. The life testing fixture according to claim 1 or 2, characterized in that: The limiting seat (3) includes at least two, each of the limiting seats (3) can correspond to the specifications of the heating plate to be tested. Correspondingly, the bottom of the box (2) has an insertion port (25) for each of the limiting seats (3) to be inserted, and a sealing element that can seal each limiting seat (3) is provided in the insertion port (25).

7. The life testing fixture according to claim 6, characterized in that: Each of the limiting seats (3) includes a seat body (31) and at least two layers of steps (32) that are recessed from the seat body (31) and extend downward to form a step for placing the corresponding heating plate to be tested. The steps (32) are concentrically arranged, and the diameter of the lower step (32) is smaller than the diameter of the upper step (32). A sealing ring is provided in each step (32).

8. The life testing fixture according to claim 6, characterized in that: Each of the limiting seats (3) is fastened to the bottom periphery of the housing (2) by means of fastening components (7).

9. The life testing fixture according to claim 8, characterized in that: The fastening assembly (7) includes a buckle (71) on the bottom of the housing (2) and a hook (72) on the base (31). The buckle (71) includes a fixing part (711) fixed to the bottom of the housing (2), an action part (712) rotatably connected to the fixing part (711), and a buckle (713) with one end linked to the action part (712) and the other end able to engage the hook (72). The buckle (713) can move horizontally and rotate with the rotation of the action part (712).

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