CN210444129U

CN210444129U - Three-phase variable frequency motor for fume suction and exhaust device

Info

Publication number: CN210444129U
Application number: CN201920864949.4U
Authority: CN
Inventors: 张琳
Original assignee: Shengzhou Xinrui Electric Co Ltd
Current assignee: Shengzhou Xinrui Electric Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-05-01
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a three-phase variable frequency motor for suction and exhaust fume device, including being arranged in installing to suction and exhaust fume device spiral case and drive in the spiral case rotatory three-phase motor of impeller, being used for stepping up civilian electricity to 380 volt step up transformer and converter, step up transformer's low pressure input passes through the wire and links to each other with civilian electric power supply, step up transformer's high-voltage output passes through the wire and is connected with the single-phase input of converter, the three-phase output of converter with three-phase motor connects, compares with prior art, the utility model discloses be suitable for the daily life power consumption voltage of china, overcome the unable difficult problem of assembling in suction and exhaust fume device of current three-phase motor, improve output slew velocity, promote oil smoke discharge efficiency and control stability.

Description

Three-phase variable frequency motor for fume suction and exhaust device

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of kitchen utensil accessory structure, especially a three-phase inverter motor for fume suction and exhaust device.

[ background of the invention ]

With the improvement of living standard of people, the oil fume suction and exhaust device becomes a necessary electric appliance in modern kitchens, such as a range hood and an integrated stove. Because the domestic electricity supplies power for 220V's alternating current, therefore the power device that is used for driving impeller rotation in most range hood at present is single phase alternating current motor, and this kind of motor has the advantage that general effect is good.

However, with the advance of urbanization, the existing house is high in height, and when a common single-phase alternating-current motor is assembled in a range hood, the wind pressure and the wind resistance at a high level affect the power of the single-phase alternating-current motor, so that the oil smoke discharge efficiency is hindered, and the problem of oil smoke backflow is caused in a serious case. And have among the prior art and apply to the case of inhaling the range hood with direct current inverter motor, like the utility model patent of patent number ZL201820385358.4 discloses a direct current frequency conversion control nearly formula lampblack absorber, because its rotor adopts tombarthite permanent magnet material preparation to form, the cost is comparatively expensive, leads to range hood overall cost high, and direct current inverter motor's electrical system is very complicated simultaneously, leads to its stability relatively poor.

[ Utility model ] content

The utility model aims at solving the problem among the prior art, provide a three-phase variable frequency motor for fume suction and exhaust device, can be suitable for china's daily life power consumption voltage, improve output slew velocity, promote oil smoke discharge efficiency and stability.

In order to achieve the above object, the utility model provides a three-phase variable frequency motor for suction and exhaust fume device, including being arranged in installing to suction and exhaust fume device spiral case and drive in the spiral case impeller rotation's three-phase motor, be used for stepping up civilian electricity to 380 volts's step up transformer and converter, step up transformer's low pressure input passes through the wire and links to each other with civilian electric power supply, step up transformer's high-voltage output passes through the wire and is connected with the single-phase input of converter, the three-phase output of converter with three-phase motor connects.

Preferably, the three-phase motor comprises a motor housing, a rotor arranged in the motor housing, and a stator core with a coil inserting groove, wherein a first-phase coil, a second-phase coil and a third-phase coil are arranged in the coil inserting groove of the stator core, and the first-phase coil, the second-phase coil and the third-phase coil are sequentially arranged in the coil groove of the stator core from outside to inside.

Preferably, the step-up transformer and the frequency converter are printed on a circuit board.

Preferably, the frequency converter comprises a rectifying unit and an inverting unit, wherein a rectifying circuit is arranged in the rectifying unit, an inverting circuit is arranged in the inverting unit, and the rectifying circuit and the inverting circuit are printed on a circuit board.

Preferably, a filtering unit is arranged in the frequency converter, a filtering circuit is arranged in the filtering unit, and the filtering circuit is printed on the circuit board.

The utility model has the advantages that: the utility model is suitable for an among range hood or the integrated kitchen, utilize step up transformer to the 380V domestic electricity of input to the three-phase electricity that is 380V is changed into 380V by the single-phase electricity of 380V with the converter is the three-phase motor power supply, according to different wind pressure and windage, improves the converter and changes working power supply frequency mode and control the three-phase motor, compares with prior art, the utility model discloses be suitable for china's daily life power consumption voltage, overcome the unable difficult problem of assembling in the oil smoke suction and discharge device of current three-phase motor, improve output slew velocity, promote oil smoke discharge efficiency and control stability.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of a three-phase motor according to the present invention;

fig. 3 is a circuit diagram of the intermediate frequency converter of the present invention;

in the figure: the motor comprises a 1-three-phase motor, a 2-step-up transformer, a 3-frequency converter, a 4-motor shell, a 5-rotor, a 6-stator core, a 7-first-phase coil, an 8-second-phase coil, a 9-third-phase coil, a 10-circuit board, an 11-rectifying unit, a 12-inverting unit and a 13-filtering unit.

[ detailed description ] embodiments

Referring to fig. 1 to 3, the utility model discloses a be arranged in installing to the suction fume exhaust device spiral case and drive the spiral case in the rotatory three phase motor 1 of impeller, be used for stepping up civilian electricity to 380 volt step up transformer 2 and converter 3, step up transformer 2's low pressure input passes through the wire and links to each other with civilian electric power, step up transformer 2's high-voltage output end passes through the wire and is connected with the single phase input of converter 3, the three phase output of converter 3 with three phase motor 1 connects.

Specifically, the three-phase motor 1 includes a motor housing 4, a rotor 5 disposed in the motor housing 4, and a stator core 6 having a slot, where a first-phase coil 7, a second-phase coil 8, and a third-phase coil 9 are disposed in the slot of the stator core 6, and the first-phase coil 7, the second-phase coil 8, and the third-phase coil 9 are sequentially disposed in the coil slot of the stator core 6 from outside to inside.

Specifically, the step-up transformer 2 and the frequency converter 3 are printed on the circuit board 10. By adopting the structure, the size of the controller can be reduced, and the installation and the fixation are convenient.

Specifically, the frequency converter 3 includes a rectifying unit 11 and an inverter unit 12, a rectifying circuit is disposed in the rectifying unit 11, an inverter circuit is disposed in the inverter unit 12, and the rectifying circuit and the inverter circuit are printed on the circuit board 10.

Specifically, a filter unit 13 is arranged in the frequency converter 3, a filter circuit is arranged in the filter unit 13, and the filter circuit is printed on the circuit board 10. The inductor and the capacitor in the filtering unit 13 form a low-pass filter to filter the alternating current output by the inverter circuit, so that interference is reduced, and the power quality is improved.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. The utility model provides a three-phase inverter motor for fume extracting and discharging device which characterized in that: the device comprises a three-phase motor (1) which is used for being installed in a volute of an oil fume suction and exhaust device and driving an impeller in the volute to rotate, a boosting transformer (2) used for boosting civil electricity to 380V and a frequency converter (3), wherein the low-voltage input end of the boosting transformer (2) is connected with a civil electricity power supply through a wire, the high-voltage output end of the boosting transformer (2) is connected with the single-phase input end of the frequency converter (3) through a wire, and the three-phase output end of the frequency converter (3) is connected with the three-phase motor (1).

2. The three-phase variable frequency motor for a lampblack suction and exhaust device according to claim 1, characterized in that: three-phase motor (1) is in including motor housing (4), setting rotor (5) in motor housing (4) and stator core (6) that have the rule groove, be equipped with first phase coil (7), second phase coil (8), third phase coil (9) in the rule groove of stator core (6), first phase coil (7), second phase coil (8), third phase coil (9) set gradually from outer to interior in the coil groove of stator core (6).

3. The three-phase variable frequency motor for a smoke exhaust ventilator according to claim 1 or 2, wherein: the step-up transformer (2) and the frequency converter (3) are printed on a circuit board (10).

4. The three-phase variable frequency motor for a lampblack suction and exhaust device according to claim 3, characterized in that: the frequency converter (3) comprises a rectifying unit (11) and an inverter unit (12), wherein a rectifying circuit is arranged in the rectifying unit (11), an inverter circuit is arranged in the inverter unit (12), and the rectifying circuit and the inverter circuit are printed on a circuit board (10).

5. The three-phase variable frequency motor for a lampblack suction and exhaust device according to claim 4, characterized in that: the frequency converter (3) is internally provided with a filter unit (13), the filter unit (13) is internally provided with a filter circuit, and the filter circuit is printed on the circuit board (10).