Kitchen fan mute frequency converter testing device

Abstract

The utility model provides a kitchen fan mute frequency converter testing device which comprises a testing box, a fixing box is fixedly installed at the bottom of the testing box, supporting rods are fixedly installed on the periphery of the bottom of the fixing box, a frequency converter body is arranged at the bottom of an inner cavity of the testing box, and a fixing mechanism is arranged at the bottom of the fixing box. The fixing mechanism comprises a motor, the motor is fixedly installed at the bottom of the fixing box, the output end of the motor is fixedly connected with a fluted disc, the top of the fluted disc is provided with a gear, and by arranging the fixing mechanism, the frequency converter body can be fixed and firmly installed in the inner cavity of the photovoltaic detection box; and the frequency converter body is prevented from shaking during detection due to the interference of external factors, so that the terminal of the frequency converter body is separated from the access end in the inner cavity of the photovoltaic detection box, the detection data is prevented from deviating, and the normal detection work of the frequency converter body is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to a kitchen fan silent frequency converter testing device, belonging to the technical field of frequency converters. Background Art

[0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The frequency converter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, microprocessor unit, etc. The frequency converter adjusts the output power voltage and frequency by the internal IGBT switching, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions, such as over-current, over-voltage, overload protection, etc. With the continuous improvement of industrial automation, frequency converters have also been widely used.

[0003] A Chinese public patent (publication number: CN 202256526 U) discloses a frequency converter test device, which includes: an outer plate; an inner plate, which is arranged on the inner side of the outer plate in a manner that it can move linearly in a direction perpendicular to the plane of the outer plate, and at least one probe group is arranged on the inner plate, and the probe group is electrically connected to a test circuit; at least one electromagnet is arranged on the inner surface of the inner plate. Compared with the method of fixing by frame buckles adopted by existing frequency converter test devices, the frequency converter test device disclosed in the utility model adopts electromagnets as fixing mechanisms, and uses the magnetism generated by the electromagnets after power-on to firmly adsorb the frequency converter test device on the frequency converter, which can avoid scratching the outer surface of the frequency converter housing, and will not affect the appearance of the frequency converter;

[0004] When the inverter is in use, there are strict requirements on the ambient temperature. When the temperature is too high and the temperature changes greatly, condensation is likely to occur inside the high-voltage inverter, and its insulation performance will be greatly reduced, and may even cause a short circuit accident. Therefore, the inverter needs to undergo a temperature test before leaving the factory. When performing frequency conversion tests in different temperature environments, the terminals of the inverter need to be connected to the test device. If the inverter is not fixed, it may cause the inverter to shake, causing the terminals of the inverter to separate from the wiring terminals of the test device, which will in turn affect the test values ​​of the inverter.

[0005] Therefore, a kitchen fan silent inverter testing device is proposed. Utility Model Content

[0006] In view of this, the utility model provides a kitchen fan silent frequency converter testing device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the utility model is implemented as follows: a kitchen fan silent inverter test device, comprising a test box, a fixed box is fixedly installed at the bottom of the test box, support rods are fixedly installed around the bottom of the fixed box, and an inverter body is arranged at the bottom of the inner cavity of the test box;

[0008] A fixing mechanism is provided at the bottom of the fixed box, and the fixing mechanism includes a motor, and the motor is fixedly installed at the bottom of the fixed box. The output end of the motor is fixedly connected with a toothed disc, and the top of the toothed disc is provided with a gear, and the outer sides of the four gears are fixedly connected with screw rods, and the outer sides of the four screw rods are movably connected to the four sides of the inner cavity of the fixed box, and the surface of the screw rod is threadedly connected with a screw block, and the top of the screw block is fixedly installed with an L-shaped rod, and the inner side of the L-shaped rod is fixedly installed with a fixing plate.

[0009] Further preferably, a limiting groove is provided at the bottom of the inner cavity of the fixing box, and the bottom of the screw block is slidably connected in the inner cavity of the limiting groove.

[0010] Further preferably, a movable groove is provided at the bottom of the inner cavity of the test box, and the L-shaped rod passes through the inner cavity of the movable groove and extends into the inner cavity of the test box.

[0011] Further preferably, sliders are fixedly installed on the outer side of the bottom of the fixed plate, and the number of sliders is eight, and the bottom of the inner cavity of the test box is opened with sliding grooves, and the number of sliding grooves is eight, and the bottoms of the eight sliders are slidably connected in the inner cavities of the eight sliding grooves.

[0012] Further preferably, a temperature sensor is fixedly installed on the top of the test box, and a temperature display panel is fixedly installed on the front side of the left side of the test box.

[0013] Further preferably, a voltage detection box is fixedly installed at the middle end of the bottom of the inner cavity of the test box, a voltage display is fixedly installed on the rear side of the left side of the test box, and the inverter body is placed in the inner cavity of the voltage detection box.

[0014] Further preferably, a testing mechanism is provided on the top of the test box, and the testing mechanism includes a refrigeration box, and the refrigeration boxes are fixedly installed on the top of the test box, an air inlet is opened on the top of the refrigeration box, a mounting plate is fixedly installed at the middle end of the inner cavity of the refrigeration box, a semiconductor refrigeration block is fixedly installed on the top of the mounting plate, a fan body is fixedly installed on the bottom of the inner cavity of the refrigeration box, heating tubes are fixedly installed around the top of the inner cavity of the test box, and heating wires are wound around the outer surfaces of the twelve heating tubes.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0016] 1. The utility model can fix the inverter body by setting a fixing mechanism, so that it can be firmly installed in the inner cavity of the electric volt detection box, avoiding the shaking of the inverter body during detection due to interference from external factors, resulting in separation of the terminals of the inverter body and the access terminals in the inner cavity of the electric volt detection box, causing deviations in the detection data, thereby affecting its normal detection work.

[0017] Second, the utility model can limit the screw block by setting the limit groove to avoid the displacement when the screw block moves, thereby affecting the normal fixing work of the inverter body. By setting the moving groove, the moving direction of the L-shaped rod can be limited to avoid the change of direction when the L-shaped rod moves inward, resulting in the inability to fix the inverter body. By setting the slider and the slide groove, the moving direction of the fixed plate can be limited to ensure that the direction will not be offset when the inverter body is fixed inward, so that the fixed plate can firmly fix the inverter body. By setting the temperature sensor and the temperature display panel, the stability of the test chamber during the test can be monitored, which is convenient for understanding the working state of the inverter in different temperature environments. By setting the voltage detection box and the voltage display, it is convenient to understand the working state of the inverter in different temperatures and detect whether the quality is up to standard. By setting the test mechanism, the cooling or heating work can be performed in the inner cavity of the test chamber, so as to check whether the inverter body will fail due to excessively high or low temperature in different temperature environments.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the front structure of the main body of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the refrigeration box of the utility model;

[0022] Figure 3 This is a schematic diagram of the motor structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the inverter of the utility model in a disassembled state;

[0024] Figure 5 It is a schematic diagram of the fixing mechanism structure of the utility model.

[0025] 1. Test box; 2. Fixing mechanism; 201. Motor; 202. Toothed disc; 2021. Gear; 203. Screw rod; 204. Screw block; 205. L-shaped rod; 206. Fixing plate; 207. Limiting groove; 208. Moving groove; 209. Slide groove; 210. Slider; 3. Test mechanism; 301. Refrigeration box; 302. Air inlet; 303. Mounting plate; 304. Semiconductor refrigeration block; 305. Fan body; 306. Heating tube; 307. Heating wire; 4. Fixing box; 5. Support rod; 6. Temperature sensor; 7. Temperature display panel; 8. Voltage detection box; 9. Voltage display; 10. Inverter body. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figure 1-5 As shown, the embodiment of the utility model provides a kitchen fan silent inverter test device, including a test box 1, a fixed box 4 is fixedly installed at the bottom of the test box 1, support rods 5 are fixedly installed around the bottom of the fixed box 4, and an inverter body 10 is arranged at the bottom of the inner cavity of the test box 1;

[0030] The bottom of the fixed box 4 is provided with a fixing mechanism 2, and the fixing mechanism 2 includes a motor 201, the motor 201 is fixedly installed at the bottom of the fixed box 4, the output end of the motor 201 is fixedly connected with a toothed disc 202, the top of the toothed disc 202 is provided with a gear 2021, the outer sides of the four gears 2021 are fixedly connected with screw rods 203, the outer sides of the four screw rods 203 are movably connected to the periphery of the inner cavity of the fixed box 4, the surface of the screw rod 203 is threadedly connected with a screw block 204, the top of the screw block 204 is fixedly installed with an L-shaped rod 205, and the inner side of the L-shaped rod 205 is fixedly installed with a fixing plate 206, a limiting groove 207 is provided at the bottom of the inner cavity of the fixed box 4, the bottom of the screw block 204 is slidably connected to the inner cavity of the limiting groove 207, a moving groove 208 is provided at the bottom of the inner cavity of the test box 1, the L-shaped rod 205 passes through the inner cavity of the moving groove 208 and extends to the inner cavity of the test box 1, and sliders 210 are fixedly installed on the outer side of the bottom of the fixed plate 206, and the number of sliders 210 is eight, and the bottom of the inner cavity of the test box 1 is provided with sliding grooves 209, and the number of sliding grooves 209 is eight, and the bottoms of the eight sliders 210 are slidably connected to the inner cavities of the eight sliding grooves 209.

[0031] By setting the fixing mechanism 2, the inverter body 10 can be fixed so that it can be firmly installed in the inner cavity of the voltage detection box 8, so as to avoid the inverter body 10 shaking during detection due to interference from external factors, resulting in the separation of the terminal of the inverter body 10 and the access end in the inner cavity of the voltage detection box 8, resulting in deviation of the detection data, thereby affecting its normal detection work. By setting the limiting groove 207, the screw block 204 can be limited to avoid its deviation when moving, thereby affecting the normal detection of the inverter. In order to ensure the normal fixing of the inverter body 10, the moving groove 208 is set to limit the moving direction of the L-shaped rod 205 to prevent the direction from changing when it moves inward, resulting in the inability to fix the inverter body 10. The slider 210 and the slide groove 209 are set to limit the moving direction of the fixing plate 206 to ensure that the direction will not shift when it fixes the inverter body 10 inward, so that the fixing plate 206 can firmly fix the inverter body 10.

[0032] Example 2

[0033] In one embodiment, a temperature sensor 6 is fixedly installed on the top of the test box 1, a temperature display panel 7 is fixedly installed on the front side of the left side of the test box 1, a voltage detection box 8 is fixedly installed on the middle end of the bottom of the inner cavity of the test box 1, a voltage display 9 is fixedly installed on the rear side of the left side of the test box 1, the inverter body 10 is placed in the inner cavity of the voltage detection box 8, and a test mechanism 3 is arranged on the top of the test box 1. The test mechanism 3 includes a refrigeration box 301, and the refrigeration boxes 301 are fixedly installed on the top of the test box 1. An air inlet 302 is opened on the top of the refrigeration box 301, a mounting plate 303 is fixedly installed on the middle end of the inner cavity of the refrigeration box 301, a semiconductor refrigeration block 304 is fixedly installed on the top of the mounting plate 303, a fan body 305 is fixedly installed on the bottom of the inner cavity of the refrigeration box 301, and heating tubes 306 are fixedly installed around the top of the inner cavity of the test box 1, and the outer surfaces of the twelve heating tubes 306 are wrapped with heating wires 307.

[0034] By setting the temperature sensor 6 and the temperature display panel 7, the stability of the inner cavity of the test box 1 during the test can be monitored, so that the working state of the frequency converter in different temperature environments can be easily understood. By setting the voltage detection box 8 and the voltage display 9, the working state of the frequency converter in different temperatures can be easily understood, and the quality can be tested to see whether it meets the standards. By setting the test mechanism 3, the inner cavity of the test box 1 can be cooled or heated respectively, so as to check whether the frequency converter body 10 will fail due to excessively high or low temperature in different temperature environments.

[0035] When the utility model is working: after the inverter body 10 is placed in the inner cavity of the voltage detection box 8, the toothed disc 202 rotates through the output of the motor 201, and drives the gear 2021 to rotate. At this time, the screw rod 203 rotates synchronously with the rotation of the gear 2021, and the screw block 204 moves inward along the thread on the surface of the screw rod 203, and then drives the L-shaped rod 205 and the fixing plate 206 to move inward. The fixing plate 206 fits around the inverter body 10 to complete the fixing work of the inverter body 10. Then the heating tube 306 and the heating wire 307 cooperate with each other and perform heating work to increase the temperature in the inner cavity of the test box 1. At this time, the voltage is increased. The volt detection box 8 and the volt display 9 cooperate with each other to read the working status of the inverter body 10 at high temperature, then turn off the heating tube 306 and the heating wire 307, and turn on the semiconductor refrigeration block 304. At this time, the semiconductor refrigeration block 304 starts to refrigerate and cool the air in the refrigeration box 301. Then, the input end of the fan body 305 sucks in the cold air, and the cold air is transported to the inner cavity of the test box 1 through the output end of the fan body 305 itself, to cool the temperature in the inner cavity of the test box 1, and then the volt detection box 8 and the volt display 9 cooperate with each other again to read the working status of the inverter body 10 at low temperature to complete the overall test work.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A kitchen fan silent inverter test device, characterized by: It comprises a test box (1), a fixed box (4) is fixedly mounted on the bottom of the test box (1), support rods (5) are fixedly mounted around the bottom of the fixed box (4), and a frequency converter body (10) is arranged at the bottom of the inner cavity of the test box (1); A fixing mechanism (2) is provided at the bottom of the fixing box (4), the fixing mechanism (2) comprising a motor (201), the motor (201) being fixedly mounted at the bottom of the fixing box (4), the output end of the motor (201) being fixedly connected to a toothed disc (202), the top of each toothed disc (202) being provided with a gear (2021), the outer sides of each of the four gears (2021) being fixedly connected to a screw rod (203), the outer sides of each of the four screw rods (203) being movably connected to the periphery of the inner cavity of the fixing box (4), the surface of each screw rod (203) being threadedly connected to a screw block (204), the top of each screw block (204) being fixedly mounted with an L-shaped rod (205), and the inner side of each of the L-shaped rods (205) being fixedly mounted with a fixing plate (206).

2. A kitchen fan silent frequency converter testing device according to claim 1, characterized in that: The bottom of the inner cavity of the fixing box (4) is provided with a limiting groove (207), and the bottom of the screw block (204) is slidably connected in the inner cavity of the limiting groove (207).

3. A kitchen fan silent frequency converter testing device according to claim 1, characterized in that: The bottom of the inner cavity of the test box (1) is provided with a movable groove (208), and the L-shaped rod (205) passes through the inner cavity of the movable groove (208) and extends into the inner cavity of the test box (1).

4. A kitchen fan silent frequency converter testing device according to claim 1, characterized in that: Slide blocks (210) are fixedly mounted on the outer sides of the bottom of the fixed plate (206), and the number of the slide blocks (210) is eight. The bottom of the inner cavity of the test box (1) is provided with slide grooves (209), and the number of the slide grooves (209) is eight. The bottoms of the eight slide blocks (210) are slidably connected to the inner cavities of the eight slide grooves (209).

5. A kitchen fan silent frequency converter testing device according to claim 1, characterized in that: A temperature sensor (6) is fixedly mounted on the top of the test box (1), and a temperature display panel (7) is fixedly mounted on the front side of the left side of the test box (1).

6. A kitchen fan silent frequency converter testing device according to claim 1, characterized in that: A voltage detection box (8) is fixedly installed at the middle end of the bottom of the inner cavity of the test box (1), a voltage display (9) is fixedly installed at the rear side of the left side of the test box (1), and the inverter body (10) is placed in the inner cavity of the voltage detection box (8).

7. A kitchen fan silent frequency converter testing device according to claim 1, characterized in that: A test mechanism (3) is arranged on the top of the test box (1), and the test mechanism (3) comprises a refrigeration box (301), the refrigeration box (301) is fixedly mounted on the top of the test box (1), an air inlet (302) is provided on the top of the refrigeration box (301), a mounting plate (303) is fixedly mounted at the middle end of the inner cavity of the refrigeration box (301), a semiconductor refrigeration block (304) is fixedly mounted on the top of the mounting plate (303), a fan body (305) is fixedly mounted on the bottom of the inner cavity of the refrigeration box (301), heating tubes (306) are fixedly mounted around the top of the inner cavity of the test box (1), and heating wires (307) are wound around the outer surfaces of the twelve heating tubes (306).

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