Cooling structure of synchronous motor

Abstract

The invention relates to the technical field of synchronous motors, in particular to a synchronous motor cooling structure which comprises a motor shell and a cooling box, the motor shell is fixedly mounted in the cooling box, a motor shaft is rotatably mounted in the motor shell, and cooling inner fan blades are fixedly connected to the outer surface of the motor shaft. The cooling inner fan blade is arranged in the motor shell; compared with the prior art, the cooling inner fan blades are arranged in the motor shell, a rotor of a heating center can be subjected to heat extraction and cooling very well, a good heat extraction and cooling channel can be formed through the air inlet piece, the inlet, the heat extraction cavity and the ventilation temperature measuring piece, heat in the synchronous motor can be discharged very well, and the service life of the synchronous motor is prolonged. And in cooperation with the cooling outer fan blades on the external cooling box, the internal and external dual-channel cooling effect can be achieved, and the cooling efficiency and effect of the synchronous motor are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of synchronous motors, and in particular to a cooling structure of a synchronous motor. Background Art

[0002] A synchronous motor is a device that converts electrical energy into mechanical energy. The speed of its rotor is strictly synchronized with the speed of the stator's rotating magnetic field. The rotor of this motor usually adopts a cage-type or winding-type structure, and the stator is a three-phase AC generator with a triangle connection. At present, during the operation of a synchronous motor, if the motor runs at high speed, the temperature of the motor is prone to be too high. If the heat is not dissipated and cooled in time, the motor will be damaged. Therefore, the cooling of the synchronous motor is particularly important. In addition, the traditional air-cooling structure is generally outside the motor housing, which is not conducive to the temperature control of the rotor heat inside the motor. For this reason, the present invention proposes a cooling structure for a synchronous motor. Summary of the invention

[0003] The object of the present invention is to provide a cooling structure for a synchronous motor to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a cooling structure of a synchronous motor, comprising a motor housing and a cooling box, wherein the motor housing is fixedly installed inside the cooling box, a motor shaft is rotatably installed inside the motor housing, a cooling inner fan blade is fixedly connected to the outer surface of the motor shaft, and the cooling inner fan blade is arranged inside the motor housing, an air inlet is fixedly installed on a side wall of the motor housing close to the cooling inner fan blade, inlets are provided on the top inner wall and the bottom inner wall of the motor housing, a heat exhaust cavity connected to the inlet is provided inside the horizontal side walls on both sides of the motor housing, and a ventilation temperature measuring component is installed at one end of the heat exhaust cavity, a temperature sensor is fixedly installed in the ventilation temperature measuring component, a controller is installed outside the cooling box, and the controller is electrically connected to the temperature sensor.

[0005] As a preferred technical solution of the present invention, the inlet is arranged on a side of the motor housing away from the air inlet member.

[0006] As a preferred technical solution of the present invention, an air inlet is provided on one side of the cooling box, and an air outlet is provided on the other side of the cooling box.

[0007] As a preferred technical solution of the present invention, a rotating seat is installed on the side of the cooling box close to the air inlet, and a cooling outer fan blade is installed on the rotating seat, and the cooling outer fan blade is fixedly connected to one end of the motor shaft.

[0008] As a preferred technical solution of the present invention, a water pump is provided inside the cooling box, the water pump is electrically connected to the controller, a return water tank is installed at the water inlet end of the water pump, a cooler is installed at the water outlet end of the water pump, a cold water pipe is fixedly installed inside the heat exhaust cavity of the motor housing, one end of the cooler away from the water pump is connected to the cold water pipe through the water inlet pipe, and one end of the cold water pipe away from the water inlet pipe is installed on the return water tank through the water outlet pipe.

[0009] As a preferred technical solution of the present invention, the cooler is provided with a plurality of vertically arranged cooling fins, the water inlet pipe is connected with the cooling fins, and the water inlet pipe is installed at the bottom of the cooler.

[0010] As a preferred technical solution of the present invention, the air inlet member includes a first air seat and an air inlet pipe fixedly mounted on the first air seat, a first inner cavity connected to the air inlet pipe is formed inside the first air seat, and a dust filter is installed on the first inner cavity.

[0011] As a preferred technical solution of the present invention, a bracket is fixedly installed on the side of the first wind seat away from the air inlet pipe, and an axle is rotatably installed on the center of the bracket through a connecting frame. A rotating fan blade is rotatably installed on one end of the axle close to the dust filter, and bristles are provided on the side of the rotating fan blade close to the dust filter, and the bristles are in contact with the surface of the dust filter.

[0012] As a preferred technical solution of the present invention, a second inner cavity is opened inside the ventilation temperature measuring component, a dustproof filter is fixedly installed on one side of the second inner cavity, and the temperature sensor is arranged inside the second inner cavity.

[0013] As a preferred technical solution of the present invention, the outer surface of the motor housing is uniformly distributed with heat sinks.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] A cooling structure of a synchronous motor of the present invention can perform good heat dissipation cooling on the rotor at the heat center by arranging cooling inner blades inside the motor housing, and can form a good heat dissipation cooling channel by utilizing the air inlet, inlet, heat dissipation cavity and ventilation temperature measuring component, and can effectively discharge the heat inside the synchronous motor to achieve efficient cooling. In combination with the cooling outer blades on the external cooling box, an internal and external dual-channel cooling effect can be achieved, greatly improving the cooling efficiency and effect of the synchronous motor.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the motor housing of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the cooler of the present invention;

[0020] Figure 4 A side view of a motor housing of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the air inlet member of the present invention;

[0022] Figure 6 For the present invention Figure 5 A schematic diagram of the structure enlargement at the center A;

[0023] Figure 7 It is a structural schematic diagram of the ventilation temperature measuring device of the present invention;

[0024] In the figure: 1. motor housing; 2. cooling box; 11. motor shaft; 12. cooling inner blades; 13. air inlet; 131. first air seat; 132. first inner cavity; 133. air inlet pipe; 134. dust filter; 135. bracket; 136. shaft; 137. rotating blades; 138. bristles; 14. ventilation temperature measuring element; 141. second inner cavity; 142. dust filter; 143. temperature sensor; 15. inlet; 16. heat exhaust cavity; 17. cold water pipe; 18. heat sink; 20. rotating seat; 21. cooling outer blades; 22. return water tank; 23. water pump; 24. cooler; 240. cooling fins; 25. controller; 26. water outlet pipe; 27. water inlet pipe; 28. air inlet; 29. ​​air outlet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-7 In the present embodiment, a cooling structure of a synchronous motor is provided, including a motor housing 1 and a cooling box 2, the motor housing 1 is fixedly installed inside the cooling box 2, a motor shaft 11 is rotatably installed inside the motor housing 1, a cooling inner fan blade 12 is fixedly connected to the outer surface of the motor shaft 11, and the cooling inner fan blade 12 is arranged inside the motor housing 1, an air inlet 13 is fixedly installed on one side wall of the motor housing 1 close to the cooling inner fan blade 12, an inlet 15 is provided on the top inner wall and the bottom inner wall of the motor housing 1, a heat exhaust cavity 16 connected to the inlet 15 is provided inside the horizontal side walls on both sides of the motor housing 1, and a ventilation temperature measuring component 14 is installed at one end of the heat exhaust cavity 16, and a ventilation temperature measuring component 14 is fixed inside the ventilation temperature measuring component 14. A temperature sensor 143 is fixedly installed, a controller 25 is installed on the outside of the cooling box 2, and the controller 25 is electrically connected to the temperature sensor 143. The inlet 15 is arranged on the side of the motor housing 1 away from the air inlet member 13. During use, when the motor shaft 11 rotates, the cooling inner fan blades 12 can be synchronously driven to rotate. By utilizing the air inlet member 13 and the ventilation temperature measuring member 14 as well as the inlet 15 and the heat exhaust chamber 16, a better cooling air duct can be formed inside the motor housing 1, so that the external cold air enters through the air inlet member 13 and cools the rotor of the heat core in the motor housing 1 very well. The cooled hot air passes through the inlet 15 and the heat exhaust chamber 16, and is finally discharged through the ventilation temperature measuring member 14, thereby achieving the internal air-cooling and heat dissipation effect of the synchronous motor.

[0029] In this embodiment, the outer surface of the motor housing 1 is evenly distributed with heat sinks 18, an air inlet 28 is opened on one side of the cooling box 2, and an air outlet 29 is opened on the other side of the cooling box 2. A rotating seat 20 is installed on the side of the cooling box 2 close to the air inlet 28, and a cooling outer fan blade 21 is installed on the rotating seat 20, and the cooling outer fan blade 21 is fixedly connected to one end of the motor shaft 11. By arranging the cooling outer fan blade 21 on the outside of the motor housing 1, the casing and the heat sink 18 of the motor housing 1 can be further cooled.

[0030] By arranging cooling inner blades 12 inside the motor housing 1, the rotor at the heat center can be well cooled for heat dissipation, and by utilizing the air inlet 13, the inlet 15, the heat dissipation cavity 16 and the ventilation temperature measuring component 14, a better heat dissipation cooling channel can be formed, which can well discharge the heat inside the synchronous motor and achieve efficient cooling. In combination with the cooling outer blades 21 on the external cooling box 2, an internal and external dual-channel cooling effect can be achieved, greatly improving the cooling efficiency and effect of the synchronous motor.

[0031] In this embodiment, a water pump 23 is provided inside the cooling box 2, and the water pump 23 is electrically connected to the controller 25. A return water tank 22 is installed at the water inlet end of the water pump 23, and a cooler 24 is installed at the water outlet end of the water pump 23. A cold water pipe 17 is fixedly installed inside the motor housing 1 located in the heat exhaust chamber 16. The end of the cooler 24 away from the water pump 23 is connected to the cold water pipe 17 through the water inlet pipe 27, and the end of the cold water pipe 17 away from the water inlet pipe 27 is installed on the return water tank 22 through the water outlet pipe 26. A second inner cavity 141 is opened inside the ventilation temperature measuring element 14, and a dust filter 142 is fixedly installed on one side of the second inner cavity 141. The temperature sensor 143 is arranged inside the second inner cavity 141. It should be noted that when the hot air passes through the second inner cavity 141 and then is discharged through the dust filter 142, since the dust filter 142 has a certain wind resistance, part of the heat is accumulated in the second inner cavity 141, so that In order to better help the temperature sensor 143 monitor the heat and effectively improve the sensitivity of temperature measurement, a plurality of vertically arranged cooling fins 240 are provided on the cooler 24, and the water inlet pipe 27 is connected to the cooling fins 240, and the water inlet pipe 27 is installed at the bottom of the cooler 24, wherein when the internal hot air passes through the ventilation temperature measuring component 14, it can be sensed and measured by the temperature sensor 143, and when the temperature exceeds the preset value of the temperature sensor 143, the controller 25 can control the water pump 23 to start, and the water pump 23 pumps the water in the return water tank 22 into the cooler 24, and by cooling the outer fan blades 21, the water in the cooler 24 can be well cooled, and the cooled water enters the cold water pipe 17, and can be well heat exchanged with the heat in the heat exhaust chamber 16, so that the heat exhaust chamber 16 is well cooled, thereby further improving the cooling effect of the heat exhaust chamber 16 and the internal heat of the motor housing 1.

[0032] In this embodiment, the air inlet member 13 includes a first air seat 131 and an air inlet pipe 133 fixedly mounted on the first air seat 131. The first air seat 131 has a first inner cavity 132 connected to the air inlet pipe 133, and a dust filter 134 is installed on the first inner cavity 132. A bracket 135 is fixedly installed on the side of the first air seat 131 away from the air inlet pipe 133. The center of the bracket 135 is rotatably mounted with a shaft 136 through a connecting frame. A rotating fan blade 137 is rotatably mounted on one end of the shaft 136 close to the dust filter 134, and a brush 138 is provided on the side of the rotating fan blade 137 close to the dust filter 134, and the brush 138 is connected to the dust filter 134. 34, wherein the dust filter 134 can effectively prevent external impurities from entering the motor housing 1, thereby ensuring the smooth operation of the synchronous motor. In order to prevent the dust filter 134 from being blocked, and also to avoid the cooling inner fan blades 12 from being unable to form a good cooling airflow inside the motor housing 1 due to blockage, thereby affecting the internal cooling effect, when the outside air passes through the first inner cavity 132 of the first air seat 131, the airflow can drive the rotating blades 137 on the bracket 135 to rotate, and the rotating rotating blades 137 can clean the surface of the dust filter 134 well, thereby achieving a good cleaning of the dust filter 134.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling structure for a synchronous motor, characterized in that: The invention comprises a motor housing (1) and a cooling box (2), wherein the motor housing (1) is fixedly mounted inside the cooling box (2), a motor shaft (11) is rotatably mounted inside the motor housing (1), a cooling inner fan blade (12) is fixedly connected to the outer surface of the motor shaft (11), and the cooling inner fan blade (12) is arranged inside the motor housing (1), an air inlet member (13) is fixedly mounted on a side wall of the motor housing (1) close to the cooling inner fan blade (12), and the motor An inlet (15) is provided on the top inner wall and the bottom inner wall of the housing (1), a heat dissipation cavity (16) connected to the inlet (15) is provided inside the horizontal side walls on both sides of the motor housing (1), and a ventilation temperature measuring component (14) is installed at one end of the heat dissipation cavity (16), a temperature sensor (143) is fixedly installed in the ventilation temperature measuring component (14), and a controller (25) is installed outside the cooling box (2), and the controller (25) is electrically connected to the temperature sensor (143).

2. A cooling structure for a synchronous motor according to claim 1, characterized in that: The inlet (15) is arranged on a side of the motor housing (1) away from the air inlet member (13).

3. The cooling structure of a synchronous motor according to claim 1, characterized in that: An air inlet (28) is provided on one side of the cooling box (2), and an air outlet (29) is provided on the other side of the cooling box (2).

4. A cooling structure for a synchronous motor according to claim 3, characterized in that: A rotating seat (20) is installed on one side of the cooling box (2) close to the air inlet (28), and a cooling outer fan blade (21) is installed on the rotating seat (20), and the cooling outer fan blade (21) is fixedly connected to one end of the motor shaft (11).

5. The cooling structure of a synchronous motor according to claim 1, characterized in that: A water pump (23) is arranged inside the cooling box (2), and the water pump (23) is electrically connected to the controller (25). A return water tank (22) is installed at the water inlet end of the water pump (23), and a cooler (24) is installed at the water outlet end of the water pump (23). A cold water pipe (17) is fixedly installed inside the motor housing (1) located in the heat exhaust chamber (16), and one end of the cooler (24) away from the water pump (23) is connected to the cold water pipe (17) through the water inlet pipe (27), and one end of the cold water pipe (17) away from the water inlet pipe (27) is installed on the return water tank (22) through the water outlet pipe (26).

6. A cooling structure for a synchronous motor according to claim 5, characterized in that: The cooler (24) is provided with a plurality of vertically arranged cooling fins (240), the water inlet pipe (27) is connected to the cooling fins (240), and the water inlet pipe (27) is installed at the bottom of the cooler (24).

7. The cooling structure of a synchronous motor according to claim 1, characterized in that: The air inlet member (13) comprises a first air seat (131) and an air inlet pipe (133) fixedly mounted on the first air seat (131); a first inner cavity (132) connected to the air inlet pipe (133) is provided inside the first air seat (131); a dust filter (134) is mounted on the first inner cavity (132).

8. The cooling structure of a synchronous motor according to claim 7, characterized in that: A bracket (135) is fixedly mounted on a side of the first air seat (131) away from the air inlet pipe (133); a shaft (136) is rotatably mounted on the center of the bracket (135) via a connecting frame; a rotating blade (137) is rotatably mounted on one end of the shaft (136) close to the dust filter (134); and bristles (138) are provided on a side of the rotating blade (137) close to the dust filter (134); the bristles (138) are in contact with the surface of the dust filter (134).

9. The cooling structure of a synchronous motor according to claim 1, characterized in that: A second inner cavity (141) is provided inside the ventilation temperature measuring component (14), a dustproof filter (142) is fixedly mounted on one side of the second inner cavity (141), and the temperature sensor (143) is arranged inside the second inner cavity (141).

10. The cooling structure of a synchronous motor according to claim 1, characterized in that: The outer surface of the motor housing (1) is evenly distributed with cooling fins (18).

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