Electric appliance service life testing device

Abstract

The utility model discloses an electric appliance service life testing device, which comprises a testing cabinet, and is characterized in that the testing cabinet is provided with a heat collection cavity and at least one air suction opening which is formed in one side of the testing cabinet and is communicated with the heat collection cavity; the at least one clamping assembly is used for clamping a to-be-tested electric appliance, and the clamping assembly is arranged on one side of the exhaust inlet; the exhaust assembly is arranged at the top of the test cabinet and is communicated with the heat collection cavity; when the air exhaust assembly works, part of working heat of the to-be-tested electric appliance can be brought into the heat collection cavity through the air suction opening and led out through the air exhaust assembly. By arranging the heat collection cavity in the test cabinet and combining the exhaust inlet and the exhaust assembly which are communicated with each other, heat generated by the to-be-tested electric appliance can be efficiently taken away, the temperature around the test environment is reduced, and potential safety hazards in the test process are reduced.

Description

Technical Field

[0001] This application relates to the technical field of electrical appliance life testing, and in particular to an electrical appliance life testing device. Background Art

[0002] Electrical appliance life testing, also known as aging testing, is a means for products to meet corresponding parameter standards before leaving the factory. Common test parameters include, for example, the operating temperature of the electrical appliance, the number of times the switch opens and closes, and the stability of current and voltage.

[0003] The existing electrical appliance life testing method is to power on the electrical appliance to be tested and place it on a fixed rack, and observe the parameters during the operation of the electrical appliance, such as the values of current and voltage. If the parameters to be tested are within the threshold range within the preset cyclic operation time, it meets the corresponding test standard. Usually, to improve the test efficiency, a batch of electrical appliances are powered on and tested simultaneously. During the operation of the electrical appliances, heat is generated. Especially for some household electrical appliances such as hair dryers, straighteners, and curling irons, the heat generated during operation is relatively large. During the test process, the ambient temperature around will rapidly increase as the test time goes by, and thus there are certain safety hazards in the whole test process. Utility Model Content

[0004] In order to reduce the temperature of the surrounding environment during the electrical appliance test and reduce safety hazards, this application provides an electrical appliance life testing device.

[0005] An electrical appliance life testing device provided by this application adopts the following technical solutions:

[0006] An electrical appliance life testing device includes:

[0007] A test cabinet having a heat collection chamber and at least one air suction port opened on one side of the test cabinet and communicating with the heat collection chamber;

[0008] At least one clamping component for clamping the electrical appliance to be tested, and the clamping component is arranged on one side of the air suction port; and

[0009] An exhaust component arranged on the top of the test cabinet and communicating with the heat collection chamber;

[0010] Wherein, when the exhaust component works, part of the working heat of the electrical appliance to be tested can be brought into the heat collection chamber through the air suction port and led out by the exhaust component.

[0011] By adopting the above technical solution, the electrical appliance to be tested is fixed by the clamping assembly. During the test process, the exhaust assembly operates to extract air from the heat collection cavity, creating a negative pressure environment in the heat collection cavity. Part of the heat generated when the electrical appliance to be tested operates can be brought into the heat collection cavity through the air suction port and finally led out of the test space through the exhaust assembly, thereby effectively reducing the temperature of the surrounding environment during the test and reducing potential safety hazards. Secondly, multiple clamping assemblies can be provided corresponding to the air suction ports one by one, so that the heat generated during the test of a batch of electrical appliances can be effectively taken out, effectively reducing potential safety hazards during the test while improving the test efficiency.

[0012] Preferably, the heat collection cavity includes a guiding surface facing the air suction port, and the guiding surface is inclined away from the air suction port.

[0013] By adopting the above technical solution, the heat generated by the operation of the electrical appliance to be tested enters through the air suction port and is guided by the guiding surface to move towards the exhaust assembly side, facilitating the rapid extraction of heat when the heat is brought into the heat collection cavity, achieving the effect of rapid heat dissipation.

[0014] Preferably, a heat insulation layer is provided in the heat collection cavity, and the heat insulation layer includes a plurality of spaced aluminosilicate fiber layers and a silica aerogel glue layer.

[0015] By adopting the above technical solution, the setting of the heat insulation layer can reduce the heat exchange between the heat collection cavity and the external environment, and reduce the heat overflowing from the heat collection cavity to increase the temperature of the surrounding environment. Secondly, the aluminosilicate fiber has a loose structure and many pores, and the thermal conductivity of air is much smaller than that of solid materials, so the aluminosilicate fiber has a low density and thermal conductivity; the porosity of silica aerogel is very high, the particle diameter and pore diameter are very small and evenly distributed, generally less than the mean free path of air molecules, so the number of collisions of air molecules is greatly reduced, and the heat convection inside the pores can be basically eliminated, resulting in an extremely low thermal conductivity, which can reduce the radiative heat transfer to a certain extent. When the silica aerogel is sintered into a glue layer and combined with the aluminosilicate fiber, the formed heat insulation layer has high heat insulation performance.

[0016] Preferably, the clamping assembly includes a limit clamp, and the limit clamp includes:

[0017] A fixed arm;

[0018] A movable arm, one end of the movable arm is rotatably connected to the fixed arm, and there is a distance between the other end of the movable arm and the fixed arm to form a clamping area; and

[0019] An adjusting member, connected to the fixed arm and the movable arm;

[0020] Wherein, when the adjusting member rotates relative to the fixed arm, the adjusting member drives the movable arm to move away from or close to the fixed arm side to expand or contract the clamping area.

[0021] By adopting the above technical solution, when clamping the electrical appliance to be tested, only the adjusting member needs to be operated to adjust the size of the clamping area to complete the clamping operation, and the overall operation is simple.

[0022] Preferably, the clamping assembly further includes:

[0023] A connecting seat, the connecting seat is provided with a first adjusting hole and a second adjusting hole;

[0024] A first adjusting rod, the first adjusting rod is connected to the test cabinet, and one end of the first adjusting rod is inserted into the first adjusting hole; and

[0025] A second adjusting rod, one end of the second adjusting rod is connected to the fixed arm, and the other end of the second adjusting rod is inserted into the second adjusting hole;

[0026] Wherein, the first adjusting rod and the second adjusting rod are arranged in a staggered manner, and both the first adjusting rod and the second adjusting rod can rotate relative to the connecting seat.

[0027] By adopting the above technical solution, the limit clip realizes rotation on the XY two axes by the rotational connection of the first adjusting rod and the second adjusting rod, better realizes the angle adjustment when clamping the electrical appliance to be tested, and can make the part that mainly generates heat during the operation of the electrical appliance to be tested face the air suction port as much as possible, which can further reduce the surrounding temperature during the test.

[0028] Preferably, the connecting seat is further provided with a first notch communicating with the first adjusting hole and a second notch communicating with the second adjusting hole, and the connecting seat is further provided with a first fastener for adjusting the size of the first notch and a second fastener for adjusting the size of the second notch.

[0029] By adopting the above technical solution, the first fastener and the second fastener correspondingly adjust the opening sizes of the first notch and the second notch to realize the size adjustment of the first adjusting hole and the second adjusting hole, and further realize the locking and unlocking operations of the limit clip by adjusting the tightness of the first adjusting rod and the second adjusting rod.

[0030] Preferably, it further includes:

[0031] A control cabinet, arranged on one side of the test cabinet, the control cabinet includes a control module, a power supply module and at least one relay;

[0032] Wherein, at least one test interface is provided on the test cabinet, the test interface, the control module, the power supply module, the relay and the electrical appliance to be tested form a test circuit, the test interface is electrically connected to the electrical appliance to be tested, and the relay is electrically connected to the test interface and can be selectively connected to the test circuit.

[0033] By adopting the above technical solution, a relay is used as a switching element to control the on / off of the test circuit of the electrical appliance to be tested, creating a safer test environment.

[0034] Preferably, it further includes a setting module connected to the control module, and the setting module is used to set the power-on time, power-off time, and the number of power-on and power-off cycles of the electrical appliance to be tested.

[0035] By adopting the above technical solution, the setting module adjusts the power-on and power-off duration and number according to the test standard of the electrical appliance to be tested, more conveniently and efficiently simulating the test environment.

[0036] Preferably, it further includes a voltage regulating module connected to the control module, and the voltage regulating module is used to adjust the voltage accessed by the test interface.

[0037] By adopting the above technical solution, the voltage regulating module can adjust the accessed voltage to suit the input voltage standards of different countries, expanding the application range of the entire test device.

[0038] Preferably, it further includes a detection module connected to the control module, and the detection module is used to receive and compare the current value input by the test interface. When the input current value is greater than the preset current threshold in the detection module, the control module cuts off the test circuit of the electrical appliance to be tested.

[0039] By adopting the above technical solution, after the detection module is set, it is convenient to timely feedback the electrical appliance with problems, reducing potential safety hazards during the test process.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. By opening a heat collection cavity in the test cabinet, combining the suction port and the exhaust component that are connected and communicated, the heat generated by the electrical appliance to be tested can be efficiently removed, reducing the temperature around the test environment. Moreover, the diversion surface set in the heat collection cavity can further quickly lead out the heat inhaled into the heat collection cavity, and the setting of the heat insulation layer effectively blocks the heat exchange between the heat collection cavity and the outside world, better controlling the temperature of the surrounding test environment and reducing the possibility of potential safety hazards;

[0042] 2. The various modules integrated in the control cabinet can make the operation more convenient. At the same time, the setting of the relay and the detection module enables the safe conduct of the test process. The setting module and the voltage regulating module can be efficient and close to the test working conditions and improve the application range of the entire test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of the test device;

[0044] Figure 2 It is a schematic diagram of the structure of the test cabinet;

[0045] Figure 3 It is a schematic structural diagram of the clamping assembly;

[0046] Figure 4 It is a schematic structural diagram of the heat insulation layer.

[0047] Explanation of reference numerals: 1. Test cabinet; 11. Heat collection cavity; 12. Air suction port; 13. Flow guiding surface; 14. Heat insulation layer; 141. Aluminum silicate fiber layer; 142. Silica aerogel glue layer; 2. Clamping assembly; 21. Fixed arm; 22. Movable arm; 221. Rotating shaft; 23. Clamping area; 24. Adjusting member; 25. Connecting seat; 251. First adjusting hole; 252. Second adjusting hole; 253. Second notch; 254. Second notch; 26. First adjusting rod; 27. Second adjusting rod; 28. First fastener; 29. Second fastener; 3. Exhaust assembly; 4. Control cabinet; 41. Relay; 42. Display module; 43. Voltage regulating controller; 44. Current controller; 45. Test interface; 5. Electrical appliance to be tested. Specific implementation manners

[0048] The present application will be further described in detail below with reference to the accompanying drawings.

[0049] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0051] Figure 1 And Figure 2 The structure of an electrical appliance life test device is shown. The electrical appliance 5 to be tested in this embodiment can be a small household electrical appliance such as a hair dryer, a hair straightener, or a hair curler. The main structure of the test device includes a test cabinet 1 and a control cabinet 4 located on one side of the test cabinet 1.

[0052] The test cabinet 1 is mainly used for clamping and testing the electrical appliance 5 to be tested. Its specific structure includes a heat collection cavity 11 opened inside. The test cabinet 1 is provided with a plurality of suction air inlets 12 arranged at intervals on one side surface, and the suction air inlets 12 are connected to the heat collection cavity 11. The test cabinet 1 is also provided with a plurality of clamping components 2 and an exhaust component 3. The clamping components 2 are located on one side of the suction air inlets 12, and one clamping component 2 corresponds to one suction air inlet 12. The electrical appliance 5 to be tested is limited on the clamping components 2. This test cabinet 1 can carry out the life tests of multiple groups of electrical appliances simultaneously.

[0053] The exhaust component 3 is arranged at the top of the test cabinet 1 and is communicated with the internal heat collection cavity 11. The exhaust component 3 mainly includes an exhaust fan and a connected exhaust duct. The length of the exhaust duct can be set according to the size of the test space. One end of the exhaust duct is connected to the exhaust fan, and the other end extends to the outside of the test space, so as to bring the heat in the heat collection cavity 11 into the external environment.

[0054] There is a diversion surface 13 facing the suction air inlet 12 in the heat collection cavity 11. The diversion surface 13 is inclined, and the inclination direction is from the bottom of the test cabinet 1 towards the exhaust component 3 side and away from the suction air inlet 12, so that the heat entering from the suction air inlet 12 can flow towards the exhaust component 3 side quickly through the diversion surface 13 when flowing, and then the heat can be taken out quickly.

[0055] Combined Figure 3 with Figure 4 , the inner surface of the heat collection cavity 11 is also coated with a heat insulation layer 14. The heat insulation layer 14 includes a plurality of spaced aluminosilicate fiber layers 141 and silica aerogel glue layers 142. The heat insulation layer 14 is used to effectively block the heat exchange between the heat collection cavity 11 and the outside world and reduce the temperature of the surrounding test environment.

[0056] The clamping component 2 includes a limit clamp, a connecting seat 25, a first adjusting rod 26 and a second adjusting rod 27. The limit clamp includes a fixed arm 21 and a movable arm 22 which are pivotally connected. The movable arm 22 is connected to the fixed arm 21 through a rotating shaft 221 to realize the relative rotation of the two. One end of the fixed arm 21 and the movable arm 22 has a spacing to form a clamping area 23. The electrical appliance 5 to be tested can enter the clamping area 23. The limit clamp also includes an adjusting member 24. The adjusting member 24 is rotatably connected to the fixed arm 21 and is threadedly connected to the movable arm 22. When the adjusting member 24 is operated to rotate, the movable arm 22 can slide relative to the adjusting member 24, so as to adjust the size of the clamping area 23 and realize the tightening and loosening clamping adjustment of the electrical appliance 5 to be tested.

[0057] One end of the first adjusting rod 26 is connected to the test cabinet 1, and the other end is installed with the connecting seat 25; one end of the second adjusting rod 27 is connected to the fixed arm 21, and the other end is installed with the connecting seat 25, thereby realizing the installation of the entire limit clip on the test cabinet 1. Further, a first adjusting hole 251 and a second adjusting hole 252 are formed on the connecting seat 25. One end of the first adjusting rod 26 passes through the first adjusting hole 251 and can rotate within the first adjusting hole 251. One end of the second adjusting rod 27 passes through the second adjusting hole 252 and can rotate within the second adjusting hole 252. A first notch communicating with the first adjusting hole 251 and a second notch 254253 communicating with the second adjusting hole 252 are formed on the connecting seat 25. A first fastener 28 is connected through the first notch, and a second fastener 29 is connected through the second notch 254253. The rotation of the first fastener 28 can contract the opening degree of the first notch, thereby changing the pre-tightening force between the first adjusting hole 251 and the first adjusting rod 26. Similarly, the rotation of the second fastener 29 changes the pre-tightening force between the second adjusting hole 252 and the second adjusting rod 27, thereby locking or loosening the first adjusting rod 26 and the second adjusting rod 27. In the relaxed state, the limit clip can rotate around the X-axis or the Y-axis to adjust the opening direction of the clamping area 23, thereby adjusting the clamping direction of the electrical appliance 5 to be tested.

[0058] The control cabinet 4 is a cabinet integrating various electrical components, specifically including a control module, a power supply module, multiple relays 41, a setting module, a voltage regulating module, and a detection module that are electrically connected to each other. The connection between each module forms a test circuit. A plurality of test interfaces 45 are provided on the test cabinet 1. One test interface 45 corresponds to one clamping assembly 2 and one air suction port 12. In this embodiment, the test interface 45 is an electrical socket, and the electrical appliance 5 to be tested is connected to the test circuit through the test interface 45. At the same time, each test circuit corresponds to a relay 41. The on-off of the corresponding test circuit is realized by turning on and off the relay 41, thereby ensuring a safe test environment.

[0059] The setting module is used to set the power-on time, power-off time, and the number of power-on and power-off cycles of the electrical appliance 5 to be tested. The operation buttons of the setting module are arranged in the display module 42. Each electrical appliance 5 to be tested has an actual working cycle life. The working on-off cycle of the electrical appliance 5 to be tested is correspondingly set by using the setting module. For example, during the process of testing the life of a hair dryer, the power-on time is set to 15 minutes, the power-off time is set to 3 minutes, and the number of power-on and power-off cycles is 4000 times, and the total time required is 72000 minutes.

[0060] The voltage regulating module adopts a three-phase contact voltage regulator, which is used to regulate the voltage accessed by the test interface 45 to be suitable for the voltage magnitudes of three-phase electricity in different countries. In this embodiment, the voltage regulating module further includes three voltage regulating controllers 43, and each voltage regulating controller 43 correspondingly adjusts the voltage of the test interfaces 45 in the same row. Furthermore, this test device can implement the electrical life tests of three different voltages.

[0061] The detection module receives and compares the current values input by the test interface 45. When the input current value is greater than the preset current threshold in the detection module, the control module cuts off the test circuit of the electrical appliance 5 to be tested. The detection module includes multiple current controllers 44, and each current controller 44 corresponds to a test interface 45. Meanwhile, the current threshold can be set by adjusting the current controller 44. The control module in this embodiment adopts a PLC controller.

[0062] When this test device is in use, the input voltage of the test interface 45, the preset current threshold, and the on-off duration and times are completed in advance. Subsequently, the electrical appliance 5 to be tested is connected to the clamping assembly 2. Particularly, the main heat-generating part of the electrical appliance 5 to be tested needs to be close to the air suction port 12. For example, when testing a hair dryer, the air outlet of the hair dryer is directed at the air suction port 12, and thus the blown heat can be directly introduced into the heat collection cavity 11. Finally, turning on the relay 41 switch corresponding to the electrical appliance 5 to be tested can start the test.

[0063] The above are all the preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An electrical appliance life test device, characterized in that Comprising: A test cabinet (1), the test cabinet (1) having a heat collecting cavity (11) and at least one air suction opening (12) opened on one side of the test cabinet (1) and communicating with the heat collecting cavity (11); At least one clamping assembly (2) for clamping an electrical appliance to be tested (5), the clamping assembly (2) being arranged on one side of the air suction opening (12); and An exhaust assembly (3) arranged on the top of the test cabinet (1) and communicating with the heat collecting cavity (11); Wherein, when the exhaust assembly (3) operates, part of the working heat of the electrical appliance to be tested (5) can be brought into the heat collecting cavity (11) through the air suction opening (12) and led out by the exhaust assembly (3).

2. An electrical appliance life test device according to claim 1, characterized in that, The heat collecting cavity (11) includes a diversion surface (13) facing the air suction opening (12), and the diversion surface (13) is inclined towards the side away from the air suction opening (12).

3. An electrical appliance life test device according to claim 1, characterized in that, A heat insulation layer (14) is arranged in the heat collecting cavity (11), and the heat insulation layer (14) includes a plurality of spaced aluminosilicate fiber layers (141) and a silica aerogel glue layer (142).

4. An electrical appliance life test device according to claim 1, characterized in that, The clamping assembly (2) includes a limit clamp, and the limit clamp includes: A fixed arm (21); A movable arm (22), one end of the movable arm (22) being rotatably connected to the fixed arm (21), and there being a spacing between the other end of the movable arm (22) and the fixed arm (21) to form a clamping area (23); and An adjusting member (24) connected to the fixed arm (21) and the movable arm (22); Wherein, when the adjusting member (24) rotates relative to the fixed arm (21), the adjusting member (24) drives the movable arm (22) to move towards or away from the fixed arm (21) to expand or contract the clamping area (23).

5. An electrical appliance life test device according to claim 4, characterized in that The clamping assembly (2) further includes: A connecting seat (25), the connecting seat (25) being provided with a first adjusting hole (251) and a second adjusting hole (252); A first adjusting rod (26), the first adjusting rod (26) being connected to the test cabinet (1), and one end of the first adjusting rod (26) passing through the first adjusting hole (251); and A second adjusting rod (27), one end of the second adjusting rod (27) being connected to the fixed arm (21), and the other end of the second adjusting rod (27) passing through the second adjusting hole (252); Wherein, the first adjusting rod (26) and the second adjusting rod (27) are arranged in a staggered manner, and both the first adjusting rod (26) and the second adjusting rod (27) can rotate relative to the connecting seat (25).

6. An electrical appliance life test device according to claim 5, characterized in that, The connecting seat (25) is further provided with a first notch communicating with the first adjusting hole (251) and a second notch (254) (253) communicating with the second adjusting hole (252), and the connecting seat (25) is further provided with a first fastener (28) for adjusting the size of the first notch and a second fastener (29) for adjusting the size of the second notch (254) (253).

7. An electrical appliance life test device according to claim 1, characterized in that, It further includes: A control cabinet (4) arranged on one side of the test cabinet (1), the control cabinet (4) including a control module, a power supply module and at least one relay (41); Among them, at least one test interface (45) is provided on the test cabinet (1). The test interface (45), the control module, the power supply module, the relay (41), and the electrical appliance under test (5) form a test circuit. The test interface (45) is electrically connected to the electrical appliance under test (5), and the relay (41) is electrically connected to the test interface (45) and can be selectively connected to the test circuit.

8. An electrical appliance life test device according to claim 7, characterized in that, It further includes a setting module connected to the control module. The setting module is used to set the power-on time, power-off time, and the number of power-on and power-off cycles of the electrical appliance under test (5).

9. An electrical appliance life test device according to claim 7, wherein, It further includes a voltage regulating module connected to the control module. The voltage regulating module is used to adjust the voltage accessed by the test interface (45).

10. An electrical appliance life test device according to claim 7, characterized in that, It further includes a detection module connected to the control module. The detection module is used to receive and compare the current value input by the test interface (45). When the input current value is greater than the preset current threshold in the detection module, the control module cuts off the test circuit of the electrical appliance under test (5).

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