CN210007568U

CN210007568U - overheat protector for motor

Info

Publication number: CN210007568U
Application number: CN201921165188.XU
Authority: CN
Inventors: 金程远
Original assignee: Jinhua Bei Te Beng Ye Co Ltd
Current assignee: Jinhua Bei Te Beng Ye Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-01-31
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses a motor overheat protection device in the motor technology field, which comprises a housing, equal fixed mounting has the fixing base about the diapire of casing, the outer wall circumference fixed mounting of casing has the reinforcing plate, the outer wall circumference of casing is opened there is outside radiating groove, the inner chamber inner wall circumference of casing is opened there is inside radiating groove, the inner chamber diapire of inside radiating groove is opened there is the louvre, the inner chamber of louvre is provided with radiator grille, the roof of casing is provided with the terminal box, the roof spiro union of terminal box has the junction box, the inner chamber of junction box is provided with the thermistor wiring, power cord and earth connection, this device temperature monitoring rate of accuracy is high, the rate of burn-out of motor is reduced, directly open radiator grille on the casing foundry goods, reduce installation radiator grille process.

Description

overheat protector for motor

Technical Field

The utility model discloses an kinds of motor overheat protection device specifically are motor technical field.

Background

Compared with permanent magnet motors, the asynchronous motor does not need permanent magnet, so it will not affect the life because of the decrease of magnetism with time, so it has long life.

The heat dissipation of current single-phase asynchronous motor is relatively poor, inside stator and rotor frictional heating in the operation process, the user is difficult to perceive, the heat can't effectively give off, the temperature risees, when the overheated condition aggravates, untimely shut down will burn the insulating layer of coil overcoat in the motor and produce the short circuit, lead to the motor to seriously damage or scrap, the use and the maintenance that make the motor have produced a great deal of inconvenience, and the cost of motor maintenance has been improved, and make the life of motor inner rotor shorten, seriously influence the availability factor of motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide kinds of motor overheat protection device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the purpose, the utility model provides a kinds of motor overheat protection devices, which comprises a housing, equal fixed mounting has the fixing base about the diapire of casing, the outer wall circumference fixed mounting of casing has the reinforcing plate, the outer wall circumference of casing is opened there is the outside radiating groove, the inner chamber inner wall circumference of casing is opened there is the inside radiating groove, the inner chamber diapire of inside radiating groove is opened there is the louvre, the inner chamber of louvre is provided with the heat dissipation grid, the roof of casing is provided with the terminal box, the roof spiro union of terminal box has the wiring pipe, the inner chamber of wiring pipe is provided with thermistor wiring, power cord and earth connection.

Preferably, the top wall of the machine shell is provided with a hanging ring mounting column.

Preferably, the reinforcing plate and the external heat dissipation groove are arranged on the outer wall of the casing in a staggered manner.

Preferably, the reinforcing plate is located outside the inner heat dissipating groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the device adds the thermistor on the stator coil of the motor, monitors the temperature of the stator coil in real time, and integrates the wiring of the thermistor and the wiring of a power supply, thereby facilitating the wiring, having high temperature monitoring accuracy and reducing the burning probability of the motor;

2) this device sets up inside radiating groove, outside radiating groove, louvre and cooling grid at the outer wall of casing, improves the radiating efficiency, directly opens the cooling grid simultaneously on the casing foundry goods, reduces installation cooling grid process, labour saving and time saving, and this device temperature monitoring rate of accuracy is high, reduces the rate of fever of motor, directly opens the cooling grid on the casing foundry goods, reduces installation cooling grid process, labour saving and time saving.

Drawings

Fig. 1 is a schematic structural view of the motor overheat protection device of the present invention;

fig. 2 is a front cross-sectional view of the motor overheat protection device of the present invention;

fig. 3 is the utility model discloses motor overheat protection device pencil schematic diagram.

In the figure: 100 machine shell, 110 fixing seat, 200 reinforcing plate, 210 external radiating groove, 220 internal radiating groove, 221 radiating hole, 222 radiating grid, 300 junction box, 310 wiring pipe, 320 hanging ring mounting column and 330 thermistor wiring.

Detailed Description

The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of , but not all embodiments.

The utility model provides an motor overheat protection device, the temperature monitoring accuracy is high, reduces the rate of burn out of motor, directly opens the heat dissipation grid on the casing foundry goods, reduces the installation heat dissipation grid process, labour saving and time saving, please refer to fig. 1 and fig. 2, including casing 100, the fixed base 110 is all fixedly installed about the diapire of casing 100, the fixed base 110 is used for installing the motor casing in required department through the bolt;

referring to fig. 1 and 2 again, the outer wall circumference of the casing 100 is fixedly installed with a reinforcing plate 200, the outer wall circumference of the casing 100 is opened with an external heat dissipation groove 210, the inner wall circumference of the inner cavity of the casing 100 is opened with an internal heat dissipation groove 220, the bottom wall of the inner cavity of the internal heat dissipation groove 220 is opened with a heat dissipation hole 221, the inner cavity of the heat dissipation hole 221 is provided with a heat dissipation grid 222, the reinforcing plate 200 is used for improving the strength of the casing 100, the external heat dissipation groove 210 and the internal heat dissipation groove 221 both improve the heat dissipation area of the casing 100 and reduce the thickness of the casing 100, the heat dissipation grid 222 and the heat dissipation hole 221 improve the heat exchange area between the inner cavity of the casing 100 and the outside air, the external heat dissipation groove 210, the internal heat dissipation groove 221, the heat dissipation;

referring to fig. 2 and 3, a junction box 300 is disposed on a top wall of the casing 100, a junction tube 310 is screwed to the top wall of the junction box 300, an inner cavity of the junction tube 310 is provided with a thermistor wire 330, a power line and a ground line, the junction box 300 is used for connecting the thermistor wire 300, the power line and the ground line with an inner cavity component of the casing 100, respectively, and the junction tube 310 is used for collectively installing the thermistor wire 300, the power line and the ground line for facilitating connection with a power supply and a controller.

In particular, as long as there is no structural conflict, the various features of the various disclosed embodiments of the invention can be used in any combination with each other, and the combination is not exhaustively described in this specification merely for the sake of brevity and resource conservation.

Claims

The motor overheat protection device is characterized by comprising a machine shell (100), wherein a fixing seat (110) is fixedly mounted on the left side and the right side of the bottom wall of the machine shell (100), a reinforcing plate (200) is fixedly mounted on the circumference of the outer wall of the machine shell (100), an external heat dissipation groove (210) is formed in the circumference of the outer wall of the machine shell (100), an internal heat dissipation groove (220) is formed in the circumference of the inner wall of the inner cavity of the machine shell (100), heat dissipation holes (221) are formed in the bottom wall of the inner cavity of the internal heat dissipation groove (220), heat dissipation grids (222) are arranged in the inner cavity of the heat dissipation holes (221), a junction box (300) is arranged on the top wall of the machine shell (100), a junction box (310) is connected to the top wall of the junction box (300) in a.
2. type motor overheat protection device according to claim 1, wherein the top wall of the casing (100) is provided with a hanging ring mounting post (320).
3. type motor overheat protection device according to claim 1, wherein the reinforcing plate (200) and the external heat dissipation grooves (210) are alternately arranged on the outer wall of the casing (100).
4. type motor overheating protection device according to claim 1, wherein the reinforcing plate (200) is located outside the inner heat dissipating groove (220).