CN217522705U

CN217522705U - Thermal protection type permanent magnet synchronous motor

Info

Publication number: CN217522705U
Application number: CN202221170731.7U
Authority: CN
Inventors: 葛振浩; 窦文灿; 范文超
Original assignee: Qufu Normal University
Current assignee: Qufu Normal University
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-09-30
Anticipated expiration: 2032-05-16

Abstract

A heat protection type permanent magnet synchronous motor comprises a motor main body, a monitoring unit and a control panel, wherein the motor main body is controlled to run by a start-stop switch, the start-stop switch is in communication connection with the control panel, the monitoring unit comprises a fixing ring and a temperature sensor, the fixing ring is sleeved on the outer ring of the motor main body, the inner ring of the fixing ring is circumferentially contacted with the motor main body through a plurality of convex ribs, the middle parts of the convex ribs are provided with inserting ports, the temperature sensor is in communication connection with the control panel and comprises a temperature probe, the temperature probe is inserted in the inserting ports, heat generated by the main body can be transmitted to the convex ribs and is transmitted to the temperature sensor by the convex ribs, so that the temperature sensor can carry out multi-directional monitoring on the motor main body, local heating caused by use environment or other factors is prevented, and meanwhile, the control panel can receive temperature information transmitted by any one or more temperature sensors, and the action of the start-stop switch is controlled, so that the start-stop of the motor main body is controlled, and the motor main body is comprehensively ensured to have a good running state.

Description

Thermal protection type permanent magnet synchronous motor

Technical Field

The utility model relates to the technical field of electric machines, specifically be a heat protection type PMSM.

Background

In the motor technology field, because the long-time work of motor or when load is great, often accompany the phenomenon of generating heat, and the method to this phenomenon is generally for setting up hot protector (temperature detect switch promptly, the temperature controller, hot protection switch or temperature switch) on the motor at present, motor temperature triggers hot protector when overheated and makes the motor stop operation, and this kind of hot protector only sets up the upper portion at the motor usually in the installation, make to temperature and monitoring have great limitation, can't monitor the local phenomenon of generating heat of motor, also some hot protector can be connected to the inside use of motor, the cost of manufacture of motor has then been increased to this kind, and it is extremely inconvenient when the maintenance is changed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the background technology, the utility model provides a thermal protection type permanent magnet synchronous motor.

The utility model discloses technical scheme as follows:

the utility model provides a thermal protection type PMSM, includes motor main part, monitoring unit and control panel, motor main part is through opening the on-off switch control running state, monitoring unit with open the on-off switch all with control panel communication is connected.

As above, the thermal protection type permanent magnet synchronous motor, the monitoring unit comprises a temperature sensor and a fixing ring, the fixing ring is sleeved on the outer ring of the motor body and provided with the temperature sensor, the temperature sensor is connected with the control panel and used for monitoring the temperature change of the motor body and transmitting the temperature information to the control panel, and the control panel can control the action of the start-stop switch according to the received temperature information so as to control the operation of the motor body.

As the main technical conception of the invention, a plurality of convex ribs are arranged on the inner ring of the fixed ring in the circumferential direction and are contacted with the motor main body through the convex ribs, the middle part of the convex rib is provided with a socket, the temperature sensor comprises a temperature probe which is inserted in the socket, the heat generated by the motor main body can be transferred to the convex rib, the convex ribs are further transmitted to the temperature sensors, so that the arrangement of the temperature sensors is more convenient, and the arrangement of the multiple temperature sensors can monitor the motor main body in multiple directions, prevent local heating caused by using environment or other factors, meanwhile, the control panel can receive temperature information transmitted by any one or more temperature sensors and control the action of the start-stop switch, and then the running state of the motor main body is controlled, and the motor main body is more comprehensively ensured to have a good running state.

Preferably, the convex ribs are made of copper, so that the convex ribs are guaranteed to have a good heat transfer effect.

Furthermore, protruding muscle is located retainer plate inner circle circumference equipartition, and temperature sensor quantity is the same with protruding muscle quantity, makes temperature sensor can wind motor body equipartition, has further guaranteed the comprehensiveness of monitoring, and then has guaranteed that motor body wholly has good running state.

As above a heat protection type PMSM, the motor main part includes the column, the retainer plate is the ring form, and it includes two semi-circular arc's fixed plate, and the one end of two fixed plates is articulated to be connected, and the connection can be dismantled to the other end, makes the installation of retainer plate use can convenient and fast more.

Further, motor body outer lane is equipped with a plurality of heat dissipation sand grips along motor body's length direction, forms the fluting between the two adjacent heat dissipation sand grips, protruding muscle is located the fluting and cross sectional shape and fluting cross sectional shape cooperate, has further guaranteed that the heat that motor body produced can be better transmits to protruding muscle to by protruding muscle feedback to temperature sensor, simultaneously, the interface is located protruding muscle middle part and arranges along the length direction of protruding muscle, has guaranteed the timeliness and the accuracy of monitoring result.

The beneficial effects of the utility model reside in that: the utility model relates to a heat protection type PMSM, synchronous machine's main part outer lane cover is equipped with the retainer plate, and the retainer plate is inside to be equipped with a plurality of protruding muscle of contradicting mutually with the motor main part, and the inside temperature sensor probe that is equipped with of protruding muscle, the heat that the motor main part produced can transmit to protruding muscle, and then transmits to temperature sensor by protruding muscle, makes temperature sensor can form diversified monitoring to the motor main part, prevents to generate heat because of the part that service environment or other factors produced, simultaneously, control panel can receive the temperature information of arbitrary one or more temperature sensor transmission to control opens and stops the switch action, and then the running state of control motor main part, more comprehensive assurance the motor main part has good running state.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

FIG. 1 is a schematic structural diagram of a synchronous motor in an embodiment;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a schematic structural view of a retainer ring according to an embodiment;

FIG. 5 is a side view of FIG. 4;

the components represented by the reference numerals in the figures are:

1. a power unit; 11. a motor main body; 12. mounting a plate; 13. a starter; 2. a stationary ring; 21. a fixing plate; 22. a rib is protruded; 221. an interface.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

Examples

Referring to fig. 1, 2 and 3, the embodiment provides a thermal protection type permanent magnet synchronous motor, which includes a power unit 1, where the power unit 1 includes a motor body 11, two connecting plates are disposed at two ends of the lower portion of the motor body 11, a mounting plate 12 is connected to lower ends of the two connecting plates, and the fixing and mounting work of the power unit 1 is completed through the mounting plate 12, and a starter 13 is further disposed on the upper portion of the motor body 11 and used for starting the motor body 11.

In this embodiment, as a main concept of the present invention, the synchronous motor further includes a monitoring unit, a control panel, and a start-stop switch (not shown), the starter 13 is connected to the control panel through the start-stop switch, and controls start-stop operation of the motor main body 11 through the start-stop switch, and the monitoring unit is connected to the control panel.

Particularly, the monitoring unit includes retainer plate 2 and temperature sensor, 11 outer lanes of motor main part are located in the cup joint of retainer plate 2, are equipped with temperature sensor on it, temperature sensor is connected with control panel, and is used for monitoring motor main part 11's temperature variation to with temperature information transmission to control panel, control panel can be according to the temperature information who receives, control opens and stops the switch action, and then control motor main part 11's operation.

Further, combine fig. 4 and 5, motor main part 11 includes the columnar structure, retainer plate 2 is the ring form, retainer plate 2 includes two semi-circular arc's fixed plate 21, and the one end of two fixed plates 21 is articulated to be connected, and the other end all outwards extends and is equipped with the connector, be equipped with the connecting hole on the connector, and can dismantle the connection through the bolt, make retainer plate 2's installation use can convenient and fast more.

Furthermore, a plurality of convex ribs 22 are arranged on the inner ring of the fixed ring 2 in the circumferential direction, and are contacted with the motor main body 11 through the plurality of convex ribs 22, the middle part of the convex rib 22 is provided with a socket 221, the temperature sensor comprises a temperature probe, the temperature probe is inserted into the insertion port 221, the heat generated by the motor body 11 can be transferred to the convex rib 22, and then transferred to the temperature sensor by the ribs 22, so that the arrangement of the temperature sensor is more convenient, moreover, the arrangement of the multiple temperature sensors can monitor the motor body 11 in multiple directions, prevent local heating caused by the use environment or other factors, meanwhile, the control panel can receive temperature information transmitted by any one or more temperature sensors and control the action of the start-stop switch, and then the running state of the motor main body 11 is controlled, and the good running state of the motor main body 11 is ensured more comprehensively.

Preferably, the outer ring of the motor body 11 is provided with a plurality of heat dissipation convex strips along the length direction of the motor body 11, a slot is formed between every two adjacent heat dissipation convex strips, the inner ring of the fixing ring 2 is matched with the outer ring of the motor body 11, the convex rib 22 is positioned in the slot, the cross section of the convex rib is matched with the cross section of the slot, heat generated by the motor body 11 can be better transmitted to the convex rib 22 and fed back to the temperature sensor by the convex rib 22, meanwhile, the plug interface 221 is positioned in the middle of the convex rib 22 and is arranged along the length direction of the convex rib 22, and timeliness and accuracy of a monitoring result are guaranteed.

As further preferred, the material of protruding muscle 22 is copper, guarantees that protruding muscle 22 has better heat transfer effect, simultaneously, protruding muscle 22 is located 2 inner circles circumference equipartitions of retainer plate, and temperature sensor quantity is the same with protruding muscle 22 quantity, makes temperature sensor can wind 11 equipartitions of motor main part, has further guaranteed the comprehensive nature to 11 temperature monitoring of motor main part, and then has guaranteed that motor main part 11 wholly has good running state.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A thermal protection type permanent magnet synchronous motor comprises a motor main body (11), and the running state of the motor main body (11) is controlled through a start-stop switch, and the thermal protection type permanent magnet synchronous motor is characterized by also comprising a monitoring unit and a control panel, wherein the monitoring unit and the start-stop switch are in communication connection with the control panel;

the monitoring unit comprises a temperature sensor and a fixed ring (2), the fixed ring (2) is sleeved on the outer ring of the motor main body (11), the temperature sensor is arranged on the fixed ring, and the temperature sensor is connected with the control panel;

the fixing ring (2) is characterized in that a plurality of convex ribs (22) are circumferentially arranged on the inner ring of the fixing ring (2), the convex ribs (22) are in contact with the motor main body (11), a plug-in port (221) is formed in the middle of each convex rib (22), the temperature sensor comprises a temperature probe, and the temperature probe is plugged in the plug-in port (221).

2. The thermal protection type permanent magnet synchronous motor according to claim 1, wherein the control panel can receive temperature information transmitted by any one or more temperature sensors and control the action of a start-stop switch.

3. A thermal protection type permanent magnet synchronous motor according to claim 2, wherein the material of the rib (22) is copper.

4. The thermal protection type permanent magnet synchronous motor according to claim 3, wherein the ribs (22) are uniformly distributed on the inner ring of the fixed ring (2) in the circumferential direction, and the number of the temperature sensors is the same as that of the ribs (22).

5. The thermal protection type permanent magnet synchronous motor according to claim 2, wherein the motor main body (11) comprises a column shape, the fixing ring (2) is annular and comprises two semi-arc fixing plates (21), one ends of the two fixing plates (21) are hinged, and the other ends of the two fixing plates are detachably connected.

6. A thermal protection type permanent magnet synchronous motor according to claim 5, characterized in that the outer ring of the motor body (11) is provided with a plurality of heat dissipation ribs along the length direction of the motor body (11), a slot is formed between two adjacent heat dissipation ribs, the ribs (22) are located in the slot and the cross-sectional shape of the ribs is matched with the cross-sectional shape of the slot.

7. The thermal protection type permanent magnet synchronous motor according to claim 6, wherein the insertion port (221) is located in the middle of the rib (22) and arranged along the length direction of the rib (22).