Energy-saving device of three-phase asynchronous motor

Abstract

The utility model relates to the technical field of three-phase asynchronous motor manufacturing, and discloses an energy-saving device of a three-phase asynchronous motor, which comprises a heat dissipation shell, the outer wall of the heat dissipation shell is provided with a plurality of air inlets, the inner wall of the heat dissipation shell is fixedly connected with a rotor shell, and the right end of the heat dissipation shell is fixedly connected with a cover plate. The left end of the heat dissipation shell is fixedly connected with a bottom plate, the inner wall of an air inlet is fixedly connected with a first filter screen, the inner wall of the air inlet communicates with a cooling pipe, and the right end of the cooling pipe communicates with a connecting pipe. According to the water cooling device, when the motor is started, the output shaft rotates, so that the second gear is driven to rotate, the first gear rotates together, the piston moves up and down, liquid in the extrusion cylinder is extruded, liquid in the connecting pipe is extracted, the purpose that the motor drives the water cooling device is achieved, the size of the motor is reduced, and practicability is improved; and the installation and maintenance difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of three - phase asynchronous motor manufacturing, and particularly relates to an energy - saving device for a three - phase asynchronous motor. Background Art

[0002] A three - phase asynchronous motor is a common type of AC motor, also known as an induction motor. It is one of the motors widely used in industry and mainly consists of a stator and a rotor. Since the speed of its rotor is lower than the synchronous speed of the rotating magnetic field, it is called an asynchronous motor. It has the advantages of simple and reliable structure, low maintenance cost, and relatively large starting torque, which is suitable for starting large loads. The design of modern three - phase asynchronous motors tends to improve efficiency and energy conservation.

[0003] The energy conservation of modern three - phase asynchronous motors is more prominent under rated load and partial load conditions. High - efficiency motors can reduce energy consumption and operating costs. Using a frequency converter to control the motor speed in combination with an energy recovery device can adjust the output power and speed according to actual needs, thereby improving the operating efficiency of the motor. The traditional resistance speed - regulation method has low efficiency, while frequency - conversion speed - regulation can keep the motor running at high efficiency under different loads.

[0004] The existing cooling and energy - saving measures for three - phase asynchronous motors during operation use water cooling in combination with air cooling, which can quickly cool the motor and improve efficiency and energy conservation. However, most of its water - cooling devices use an external water pump to drive the water cooling, resulting in more motor structures and larger sizes, reducing its practicality and increasing the difficulty of installation and maintenance. Summary of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides an energy - saving device for a three - phase asynchronous motor, aiming to improve the problem that the cooling and energy - saving measures for three - phase asynchronous motors during operation use an external water pump to drive the water cooling, resulting in more motor structures and larger sizes.

[0006] To achieve the above object, the utility model adopts the following technical solution: An energy-saving device for a three-phase asynchronous motor, including a heat dissipation housing, a plurality of air inlets are provided on the outer wall of the heat dissipation housing, a rotor housing is fixedly connected to the inner wall of the heat dissipation housing, a cover plate is fixedly connected to the right end of the heat dissipation housing, a bottom plate is fixedly connected to the left end of the heat dissipation housing, a first filter screen is fixedly connected to the inner wall of the air inlet, a cooling pipe is communicated with the inner wall of the air inlet, a connecting pipe is communicated with the right end of the cooling pipe, a second one-way valve is communicated with the inner wall of the connecting pipe, an extrusion cylinder is communicated with the right end of the connecting pipe, a piston is slidably connected to the inner wall of the extrusion cylinder, a connecting rod is rotatably connected to the top of the piston, a first gear is rotatably connected to the left side of the connecting rod, a return water pipe is communicated with the front side of the extrusion cylinder, a first one-way valve is communicated with the inner wall of the return water pipe, a return water tank is communicated with the top of the first one-way valve, a cooling tank is communicated with the left side of the return water tank, an output shaft is rotatably connected to the left end of the rotor housing, a second gear is fixedly connected to the outer wall of the output shaft, the outer wall of the second gear is meshed with the outer wall of the first gear, a rotating fan is fixedly connected to the left end of the output shaft, a second filter screen is fixedly connected to the middle of the bottom plate, and an installation structure is provided at the left end of the heat dissipation housing, and the installation structure is for quick installation.

[0007] As a further description of the above technical solution:

[0008] The installation structure includes mounting plates, a plurality of the mounting plates are arranged at the bottom of the heat dissipation housing, a chute is provided in the middle of the mounting plate, a clamping block is slidably connected to the inner wall of the chute, a guide block is slidably connected to the middle of the inner wall of the chute, a first clamping groove is provided in the middle of the guide block, a guide rod is fixedly connected to the outer end of the guide block, a sliding block is slidably connected to the inner wall of the first clamping groove, a spring is fixedly connected to the top of the sliding block, an L-shaped rod is fixedly connected to the outer side of the sliding block, and second clamping grooves are provided at the inner sides of the bottom plate and the cover plate near the edges.

[0009] As a further description of the above technical solution:

[0010] Mounting screws are threadedly connected to the outer wall of the mounting plate near the edge, and a limiting sleeve is fixedly connected to the outer wall of the guide rod.

[0011] As a further description of the above technical solution:

[0012] A second dust-proof plug is threadedly connected to the top of the return water tank, and a first dust-proof plug is threadedly connected to the top of the cooling tank.

[0013] As a further description of the above technical solution:

[0014] A nameplate is fixedly connected to the front side of the heat dissipation housing, and the left end of the first gear is rotatably connected to the right end of the rotor housing.

[0015] As a further description of the above technical solution:

[0016] A controller is fixedly connected to the front side of the heat dissipation housing near the edge, and the bottom end of the cooling box is communicated with the left end of the cooling pipe.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the clamping block is slidably connected to the inner wall of the second clamping groove, and the inward side of the clamping block is fitted to the outer wall of the first clamping groove.

[0019] As a further description of the above technical solution:

[0020] An oil injection hole is provided at the right end of the cover plate, and a plurality of heat dissipation fins are fixedly connected to both the left and right sides of the outer wall of the heat dissipation housing.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, when the motor is started, the output shaft will rotate, thereby driving the second gear to rotate and causing the first gear to rotate together, and then moving the piston up and down, squeezing the liquid in the extrusion cylinder, extracting the liquid in the connecting pipe, so that the cooling pipe can cool the air entering from the air inlet, achieving the purpose of the motor itself driving the water cooling device, reducing the volume of the motor, improving the practicability, and reducing the installation and maintenance difficulty.

[0023] 2. In the utility model, by pressing the guide block, the clamping block is squeezed to move to both sides and snap into the second clamping groove, and the spring squeezes the sliding block, so that the sliding block snaps into the first clamping groove. Then, by sliding the L-shaped rod upward, the sliding block is disengaged from the guide block, achieving the purpose of separating and installing the motor and the base, accelerating the installation process, reducing the installation time, and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a front three-dimensional view of an energy-saving device for a three-phase asynchronous motor proposed by the utility model;

[0025] Figure 2 is a side view of an energy-saving device for a three-phase asynchronous motor proposed by the utility model;

[0026] Figure 3 is a partial structure split view of an energy-saving device for a three-phase asynchronous motor proposed by the utility model;

[0027] Figure 4 is Figure 3 an enlarged view of part A;

[0028] Figure 5 The partial structural schematic diagram of an energy-saving device for a three-phase asynchronous motor proposed by the present utility model;

[0029] Figure 6 The sectional view of an energy-saving device for a three-phase asynchronous motor proposed by the present utility model.

[0030] Legend description:

[0031] 1. Heat dissipation housing; 2. Installation structure; 201. Installation plate; 202. Clamping block; 203. Spring; 204. Sliding block; 205. L-shaped rod; 206. Chute; 207. First card slot; 208. Guide block; 209. Guide rod; 210. Second card slot; 3. Cover plate; 4. Bottom plate; 5. Return water tank; 6. Cooling box; 7. First filter screen; 8. Cooling pipe; 9. Air inlet; 10. Return water pipe; 11. First one-way valve; 12. Extrusion cylinder; 13. Second one-way valve; 14. Connecting pipe; 15. Piston; 16. First gear; 17. Connecting rod; 18. Second gear; 19. Rotor housing; 20. Rotating fan; 21. Second filter screen; 22. First dust plug; 23. Second dust plug; 24. Controller; 25. Nameplate; 26. Oil injection hole; 27. Heat dissipation fins; 28. Limiting sleeve; 29. Installation screw; 30. Output shaft. Specific implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Please refer to the attached Figure 1 - attached Figure 3, an embodiment provided by the present utility model: an energy-saving device for a three-phase asynchronous motor, including a heat dissipation housing 1, a plurality of air inlets 9 are provided on the outer wall of the heat dissipation housing 1, a rotor housing 19 is fixedly connected to the inner wall of the heat dissipation housing 1, a cover plate 3 is fixedly connected to the right end of the heat dissipation housing 1, a bottom plate 4 is fixedly connected to the left end of the heat dissipation housing 1, a first filter screen 7 is fixedly connected to the inner wall of the air inlet 9, a cooling pipe 8 is communicated with the inner wall of the air inlet 9, a connecting pipe 14 is communicated with the right end of the cooling pipe 8, a second check valve 13 is communicated with the inner wall of the connecting pipe 14, a pressing cylinder 12 is communicated with the right end of the connecting pipe 14, a piston 15 is slidably connected to the inner wall of the pressing cylinder 12, a connecting rod 17 is rotatably connected to the top of the piston 15, a first gear 16 is rotatably connected to the left side of the connecting rod 17, a water return pipe 10 is communicated with the front side of the pressing cylinder 12, a first check valve 11 is communicated with the inner wall of the water return pipe 10, a water return tank 5 is communicated with the top of the first check valve 11, a cooling tank 6 is communicated with the left side of the water return tank 5, an output shaft 30 is rotatably connected to the left end of the rotor housing 19, a second gear 18 is fixedly connected to the outer wall of the output shaft 30, the outer wall of the second gear 18 is meshed with the outer wall of the first gear 16, a rotating fan 20 is fixedly connected to the left end of the output shaft 30, a second filter screen 21 is fixedly connected to the middle of the bottom plate 4, an installation structure 2 is provided at the left end of the heat dissipation housing 1, and the installation structure 2 is used for quick installation. A second dust-proof plug 23 is threadedly connected to the top of the water return tank 5, and a first dust-proof plug 22 is threadedly connected to the top of the cooling tank 6;

[0034] Specifically, a second dust-proof plug 23 is threadedly connected to the top of the water return tank 5, and a first dust-proof plug 22 is threadedly connected to the top of the cooling tank 6, which can prevent dust from entering the water cooling mechanism and avoid blockage. A second filter screen 21 is fixedly connected to the middle of the bottom plate 4, and the second filter screen 21 can prevent external dust from flowing back into the motor. The flow direction of the first check valve 11 is only from the water return pipe 10 into the water return tank 5, and the flow direction of the second check valve 13 is only from the connecting pipe 14 into the pressing cylinder 12. The cooling tank 6 can help the returned coolant to be quickly cooled and then flow into 8. A first filter screen 7 is fixedly connected to the inner wall of the air inlet 9 to prevent dust from entering the interior of the motor.

[0035] Please refer to the appendix Figure 4 -appendix Figure 5The mounting structure 2 includes a mounting plate 201, and a plurality of mounting plates 201 are arranged at the bottom of the heat dissipation housing 1. A slide groove 206 is provided in the middle of the mounting plate 201. A card block 202 is slidably connected to the inner wall of the slide groove 206. A guide block 208 is slidably connected to the middle of the inner wall of the slide groove 206. A first card groove 207 is provided in the middle of the guide block 208. A guide rod 209 is fixedly connected to the outward end of the guide block 208. A sliding block 204 is slidably connected to the inner wall of the first card groove 207. A spring 203 is fixedly connected to the top of the sliding block 204. An L-shaped rod 205 is fixedly connected to the outward side of the sliding block 204. A second card groove 210 is provided near the edge of the inward side of the bottom plate 4 and the cover plate 3. A mounting screw 29 is threadedly connected to the outer wall of the mounting plate 201 near the edge. A limiting sleeve 28 is fixedly connected to the outer wall of the guide rod 209.

[0036] Specifically, a limiting sleeve 28 is fixedly connected to the outer wall of the guide rod 209 to ensure that the guide rod 209 will not be displaced too far and disengaged from the mechanism when being pressed and displaced. The mounting screws 29 can fix the mounting plate 201 at the position where it needs to be installed. The edges of the block 202 and the second slot 210 are both chamfered, so that the block 202 can slide inwardly in the slide slot 206 after contacting the limit of the guide block 208, thereby disengaging from the second slot 210. At the same time, the outward side of the sliding block 204 is fixedly connected with an L-shaped rod 205, which can slide up to release the limit of the mechanism.

[0037] Please see attached Figure 5 - Attachment Figure 6 A nameplate 25 is fixedly connected to the front side of the heat dissipation housing 1, the left end of the first gear 16 is rotatably connected to the right end of the rotor housing 19, a controller 24 is fixedly connected to the front side of the heat dissipation housing 1 near the edge, the bottom end of the cooling box 6 is connected to the left end of the cooling pipe 8, the outer wall of the block 202 is slidably connected to the inner wall of the second slot 210, the inward side of the block 202 is fitted with the outer wall of the first slot 207, an oil filling hole 26 is opened at the right end of the cover plate 3, and a plurality of heat dissipation fins 27 are fixedly connected to the left and right sides of the outer wall of the heat dissipation housing 1;

[0038] Specifically, the nameplate 25 is engraved with detailed information of the equipment to facilitate user identification and maintenance. The controller 24 can control the start and stop of the motor. The oil filling hole 26 is used to facilitate the filling of lubricating oil into the mechanical structure of the motor. The cooling fins 27 can increase the heat dissipation area and improve the heat dissipation efficiency. The bottom of the cooling box 6 is connected to the left end of the cooling pipe 8, so that the cooled liquid can flow back into the cooling pipe for cooling.

[0039] Working principle: When the three-phase asynchronous motor is running and the output shaft 30 outputs rotation outward, it will drive the rotating fan 20 to rotate, causing the air in the heat dissipation housing 1 to flow out from the second filter screen 21 in the bottom plate 4 and flow into new air from the air inlet 9 through the filtration of the first filter screen 7. While the output shaft 30 is rotating, it will drive the second gear 18 to rotate, thereby driving the first gear 16 to rotate. While the connecting rod 17 moves up and down reciprocally, the piston 15 can slide up and down in the extrusion cylinder 12. When the piston 15 moves upward, it leaves the extrusion cylinder 12, causing a negative pressure inside it, so that the heated liquid flows from the cooling pipe 8 into the connecting pipe 14 and then into the extrusion cylinder 12. After the piston 15 reaches the highest point and presses down the liquid in the extrusion cylinder 12, due to the one-way flow of the second one-way valve 13, it cannot flow back into the connecting pipe 14 and can only enter the return water pipe 10. Due to the one-way flow of the first one-way valve 11, it cannot flow back and finally flows into the return water tank 5, and then flows into the cooling tank 6. After being cooled, it flows back into the cooling pipe 8. When the air enters from the air inlet 9, it will pass through the cooling pipe 8 to cool the incoming air.

[0040] When the motor needs to be installed, first fix the mounting plate 201 at the position to be installed through the mounting screws 29. Then pull the guide block 208 outward, align the second card slots 210 on the outer walls of the bottom plate 4 and the cover plate 3 with the card block 202. Then press the guide block 208 until the sliding block 204 is squeezed by the spring 203 and engages with the first card slot 207 and stops. The guide block 208 will squeeze the card block 202 to make it snap into the second card slot 210. When disassembly is required, pull the L-shaped rod 205 upward to make the sliding block 204 move upward and disengage from the guide block 208.

[0041] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving device for a three-phase asynchronous motor, comprising a heat dissipation housing (1), characterized in that: The outer wall of the heat dissipation shell (1) is provided with a plurality of air inlets (9); the inner wall of the heat dissipation shell (1) is fixedly connected to a rotor shell (19); the right end of the heat dissipation shell (1) is fixedly connected to a cover plate (3); the left end of the heat dissipation shell (1) is fixedly connected to a bottom plate (4); the inner wall of the air inlet (9) is fixedly connected to a first filter screen (7); the inner wall of the air inlet (9) is connected to a cooling pipe (8); the right end of the cooling pipe (8) is connected to a connecting pipe (14); the inner wall of the connecting pipe (14) is connected to a second one-way valve (13); the right end of the connecting pipe (14) is connected to an extrusion cylinder (12); the inner wall of the extrusion cylinder (12) is slidably connected to a piston (15); the top end of the piston (15) is rotatably connected to a connecting rod (17); the left side of the connecting rod (17) is rotatably connected to the connecting rod (17); The first gear (16) is connected to the front side of the extrusion cylinder (12), the return pipe (10) is connected to the inner wall of the return pipe (10), the top of the first check valve (11) is connected to the return tank (5), the left side of the return tank (5) is connected to the cooling tank (6), the left end of the rotor housing (19) is rotatably connected to the output shaft (30), the outer wall of the output shaft (30) is fixedly connected to the second gear (18), the outer wall of the second gear (18) is meshed with the outer wall of the first gear (16), the left end of the output shaft (30) is fixedly connected to the rotary fan (20), the middle part of the bottom plate (4) is fixedly connected to the second filter (21), and the left end of the heat dissipation housing (1) is provided with a mounting structure (2), and the mounting structure (2) is used for quick installation.

2. The energy-saving device for a three-phase asynchronous motor according to claim 1, characterized in that: The mounting structure (2) comprises a mounting plate (201), wherein a plurality of the mounting plates (201) are arranged at the bottom of the heat dissipation housing (1), a sliding groove (206) is provided in the middle of the mounting plate (201), a clamping block (202) is slidably connected to the inner wall of the sliding groove (206), a guide block (208) is slidably connected to the middle of the inner wall of the sliding groove (206), a first clamping groove (207) is provided in the middle of the guide block (208), an outward end of the guide block (208) is fixedly connected to a guide rod (209), an inner wall of the first clamping groove (207) is slidably connected to a sliding block (204), a top end of the sliding block (204) is fixedly connected to a spring (203), an outward side of the sliding block (204) is fixedly connected to an L-shaped rod (205), and a second clamping groove (210) is provided on the inner side of the bottom plate (4) and the cover plate (3) near the edge.

3. The energy-saving device for a three-phase asynchronous motor according to claim 2, characterized in that: The outer wall of the mounting plate (201) is threadedly connected with a mounting screw (29) near the edge, and the outer wall of the guide rod (209) is fixedly connected with a limiting sleeve (28).

4. The energy-saving device for a three-phase asynchronous motor according to claim 1, characterized in that: The top of the return water tank (5) is threadedly connected to a second dust plug (23), and the top of the cooling tank (6) is threadedly connected to a first dust plug (22).

5. The energy-saving device for a three-phase asynchronous motor according to claim 1, characterized in that: A nameplate (25) is fixedly connected to the front side of the heat dissipation housing (1), and the left end of the first gear (16) is rotatably connected to the right end of the rotor housing (19).

6. The energy-saving device for a three-phase asynchronous motor according to claim 1, characterized in that: A controller (24) is fixedly connected to the front side of the heat dissipation housing (1) near the edge, and the bottom end of the cooling box (6) is connected to the left end of the cooling pipe (8).

7. The energy-saving device for a three-phase asynchronous motor according to claim 2, characterized in that: The outer wall of the clamping block (202) is slidably connected to the inner wall of the second clamping slot (210), and the inward side of the clamping block (202) is in contact with the outer wall of the first clamping slot (207).

8. The energy-saving device for a three-phase asynchronous motor according to claim 1, characterized in that: An oil filling hole (26) is provided at the right end of the cover plate (3), and a plurality of heat dissipation fins (27) are fixedly connected to the left and right sides of the outer wall of the heat dissipation housing (1).

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