Motor with self-cooling function

Abstract

The motor with autonomous cooling function is composed of a cover body, a stator and a fan cover, wherein a terminal box is fixedly installed on the stator, two machine bases are symmetrically fixed on the two sides of the stator, a rotor is installed in the stator, the rotor comprises a rotating shaft, the rotating shaft is rotatably penetrated through the cover body through a bearing, the rotating shaft is rotatably arranged on the fan cover and is fixed with a fan, and a plurality of fins are fixed on the stator; a liquid cooling assembly is further installed on the two sides of the stator, the liquid cooling assembly comprises a first liquid storage structure fixedly installed with the cover body and a second liquid storage structure fixed in the fan cover, the first liquid storage structure and the second liquid storage structure are fixedly communicated through a plurality of first water pipes, the second liquid storage structure is fixedly communicated with a second water pipe, the second water pipe is fixedly communicated with a water pump, the water pump is fixedly installed on the fan cover, and the water pump is fixedly communicated with the first liquid storage structure through a third water pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric machines, in particular to an electric machine with autonomous cooling function. BACKGROUND

[0002] Electric machines, also known as motors, are devices that convert electrical energy into mechanical energy and are the common power source for various electrical appliances and mechanical equipment. Electric machines are widely used in agriculture, industry, military and other fields, and modern production cannot be separated from electric machines.

[0003] Existing electric machines generally have cooling functions, which use fans connected to internal shafts to blow air to cool the stator part, or have water cooling pipes. However, the cooling function of existing electric machines generally cannot handle emergency situations well. During the operation of the electric machine, overheating of the bearing position is a common problem. The existing electric machine cannot handle this situation well, and the electric machine has the risk of burning out. SUMMARY

[0004] The purpose of the present application is to provide an electric machine with autonomous cooling function to solve the above problems.

[0005] The above technical purpose of the present application is achieved by the following technical scheme: an electric machine with autonomous cooling function, comprising a cover, a stator and a fan cover, wherein a terminal box is fixedly installed on the stator, two machine bases are symmetrically fixed on both sides of the stator, a rotor is installed in the stator, the rotor comprises a rotating shaft, the rotating shaft is rotatably penetrated through the cover through a bearing, the end of the rotating shaft is rotatably arranged on the fan cover and fixedly provided with a fan, and a plurality of fins are fixedly arranged on the stator.

[0006] A liquid cooling assembly is also installed on both sides of the stator, the liquid cooling assembly comprises a first liquid storage structure fixedly installed on the cover and a second liquid storage structure fixedly installed in the fan cover, the first liquid storage structure and the second liquid storage structure are fixedly communicated through a plurality of first water pipes, the second liquid storage structure is fixedly communicated with a second water pipe, the second water pipe is fixedly communicated with a water pump, the water pump is fixedly installed on the fan cover, and the water pump is fixedly communicated with the first liquid storage structure through a third water pipe.

[0007] The first liquid storage structure comprises a first fixed ring fixedly connected to the cover and a first movable ring slidably sleeved on the cover, a first membrane and a second membrane are fixedly arranged between the first movable ring and the first fixed ring, wherein the first movable ring, the first fixed ring, the first membrane and the second membrane jointly form a first liquid storage cavity, and the first liquid storage cavity is filled with cooling liquid.

[0008] The second liquid storage structure comprises a second fixed ring fixed with the stator, a second movable ring arranged on one side of the second fixed ring, the second movable ring being in sliding connection with the stator, a third film and a fourth film being fixed between the second movable ring and the second fixed ring, wherein the second fixed ring, the second movable ring, the third film and the fourth film jointly form a second liquid storage cavity, and the second liquid storage cavity is filled with cooling liquid.

[0009] One end of the second water pipe is fixedly communicated with the second liquid storage cavity, one end of the third water pipe is fixedly communicated with the first liquid storage cavity, and two ends of the first water pipe are fixedly communicated with the second liquid storage cavity and the first liquid storage cavity respectively.

[0010] A fixed plate is fixed on one of the bases, an electric telescopic rod is fixedly installed on the fixed plate, the electric telescopic rod controls the extension and retraction of a hydraulic rod, the end of the hydraulic rod controlled by the electric telescopic rod is fixedly connected with a connecting plate, the connecting plate is fixed with the first movable ring, an intermediate rod is fixed on the connecting plate, the other end of the intermediate rod is fixed with the second movable ring, the extension and retraction of the electric telescopic rod can drive the first movable ring and the second movable ring to move to one side simultaneously through the connecting plate and the intermediate rod, so that the cooling liquid in the second liquid storage cavity is squeezed into the first liquid storage cavity through the first water pipe, the cooling liquid in the first liquid storage cavity is increased, or the cooling liquid in the first liquid storage cavity is squeezed into the second liquid storage cavity through the first water pipe, the cooling liquid in the first liquid storage cavity is reduced, and a temperature sensor is installed at the bearing position in the cover.

[0011] Preferably, a plurality of spray assemblies are installed in the second liquid storage cavity, each spray assembly comprises a liquid collecting cylinder fixed in the inside of the second movable ring, a spraying groove is arranged in the liquid collecting cylinder, a piston is slidingly installed in the spraying groove, one end of the piston is fixed with an extension rod penetrating through the liquid collecting cylinder, a push head is fixed at the end of the extension rod, the piston and the inner wall of the spraying groove are fixed by a spring, a collecting opening is arranged on the side wall of the spraying groove and located on one side of the piston, and an atomizing nozzle extending to the outside is fixedly communicated with the end of the liquid collecting cylinder.

[0012] Preferably, each first water pipe is arranged between the fins.

[0013] Preferably, a control box fixed with the base is arranged on one side of the fixed plate.

[0014] Preferably, at least two guide plates are fixed on the second movable ring, a guide strip is arranged in the hole and penetrates through the guide plate, and the guide strip is fixed with the stator.

[0015] Preferably, the first film, the second film, the third film and the fourth film are made of rubber material.

[0016] Preferably, a slide is formed on the fan cover.

[0017] In summary, the present application has the following advantages:

[0018] 1. The application is also installed on both sides of the stator liquid cooling assembly, liquid cooling assembly includes with the cover fixed installation of a liquid storage structure and fixed in the fan cover of the second liquid storage structure, a liquid storage structure and the second liquid storage structure through a plurality of water pipe fixed communication, the second liquid storage structure is fixed communication with the second water pipe, the second water pipe and water pump fixed communication, water pump fixed installation in the fan cover, water pump through the third water pipe and a liquid storage structure fixed communication, water pump start after the cooling liquid in the second liquid storage structure from the third water pipe to the liquid storage structure from the first water pipe to the second liquid storage structure, realize the circulation of cooling liquid, so as to realize the circulation of the motor liquid cooling cooling.

[0019] 2. The first liquid storage structure includes a fixed ring fixed with the cover and a movable ring slidingly sleeved on the cover, a first membrane and a second membrane are fixedly arranged between the first movable ring and the first fixed ring, wherein the first movable ring, the first fixed ring, the first membrane and the second membrane jointly form a first liquid storage cavity, and the first liquid storage cavity is filled with cooling liquid; the second liquid storage structure includes a second fixed ring fixed with the stator, a second movable ring is arranged on one side of the second fixed ring, and the second movable ring is in sliding connection with the stator, and a third membrane and a fourth membrane are fixed between the second movable ring and the second fixed ring, wherein the second fixed ring, the second movable ring, the third membrane and the fourth membrane jointly form a second liquid storage cavity, and the second liquid storage cavity is filled with cooling liquid; a fixed plate is fixed on one of the two bases, an electric telescopic rod is fixedly installed on the fixed plate, the electric telescopic rod controls the extension and retraction of a hydraulic rod, the end of the hydraulic rod controlled by the electric telescopic rod is fixedly connected with a connecting piece, the connecting piece is fixed with the first movable ring, an intermediate rod is fixed on the connecting piece, and the other end of the intermediate rod is fixed with the second movable ring; the extension and retraction of the electric telescopic rod can drive the first movable ring and the second movable ring to move to one side simultaneously through the connecting piece and the intermediate rod, so that the cooling liquid in the second liquid storage cavity is squeezed into the first liquid storage cavity through the first water pipe, the cooling liquid in the first liquid storage cavity is increased, or the cooling liquid in the first liquid storage cavity is squeezed into the second liquid storage cavity through the first water pipe, the cooling liquid in the first liquid storage cavity is reduced, and a temperature sensor is installed at the bearing position in the cover; when it is detected that the temperature is too high, the cooling liquid in the second liquid storage cavity is squeezed into the first liquid storage cavity through the first water pipe, so that the cooling liquid in the first liquid storage cavity is increased, thereby immediately cooling the rotating shaft position quickly, and effectively dealing with the dangerous situation of overheating of the bearing in the rotating shaft.

[0020] 3. A plurality of spray assemblies are installed in the second liquid storage cavity, each of the spray assemblies comprising a liquid collecting cylinder fixed inside the second moving ring, a spraying groove being formed in the liquid collecting cylinder, a piston being slidably installed in the spraying groove, an extension rod being fixed at one end of the piston and penetrating through the liquid collecting cylinder, a push head being fixed at the end of the extension rod, the piston being fixed to the inner wall of the spraying groove by a spring, a collecting opening being formed in the side wall of the spraying groove and located at one side of the piston, an atomizing nozzle being fixed at the end of the liquid collecting cylinder and extending outside, the spraying groove being filled with cooling liquid, when the temperature reaches a critical value, the second moving ring is further pulled towards the cover body, the push head contacts the second fixed ring, and the piston is driven by the second fixed ring to move along the spraying groove, the collecting opening is first blocked, and then the cooling liquid in the spraying groove is pushed out from the atomizing nozzle, the cooling liquid sprayed from the atomizing nozzle is atomized, and the atomized cooling liquid is sprayed to each position on the stator under the blowing action of the fan, so that rapid evaporation and heat dissipation are realized. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0022] Figure 1 is the first appearance schematic diagram of the embodiment of the present application;

[0023] Figure 2 is the second appearance schematic diagram of the embodiment of the present application;

[0024] Figure 3 is the first appearance schematic diagram of the embodiment of the present application after removing the fan cover;

[0025] Figure 4 is the second appearance schematic diagram of the embodiment of the present application after removing the fan cover;

[0026] Figure 5 is the cross-sectional schematic diagram of the embodiment of the present application;

[0027] Figure 6 is Figure 5 is the enlarged schematic diagram of A in FIG.

[0028] Figure 7 Figure 5 is the enlarged schematic diagram of B in FIG.

[0029] In the figure: 10, cover; 11, rotating shaft; 12, terminal box; 13, stator; 14, fan cover; 15, fin; 16, No. 1 water pipe; 17, slide; 18, middle rod; 19, machine base; 20, control box; 21, fixed sheet; 22, electric telescopic rod; 23, connecting sheet; 24, No. 1 moving ring; 25, No. 1 film; 26, No. 1 fixed ring; 27, water pump; 28, No. 2 water pipe; 29, No. 2 fixed ring; 30, No. 3 film; 31, No. 2 moving ring; 32, guide sheet; 33, guide strip; 34, fan; 35, No. 3 water pipe; 36, No. 1 liquid storage cavity; 37, No. 2 film; 38, No. 4 film; 39, No. 2 liquid storage cavity; 40, push head; 41, extension rod; 42, spring; 43, piston; 44, collection port; 45, atomizing nozzle; 46, spraying groove; 47, liquid collecting cylinder; 50, No. 1 liquid storage structure; 60, No. 2 liquid storage structure. DETAILED DESCRIPTION

[0030] CONJUNCTION WITH THE DRAWINGS Figures 1-7 The motor with self-cooling function is composed of a cover 10, a stator 13 and a fan cover 14, wherein the terminal box 12 is fixedly installed on the stator 13, two machine bases 19 are symmetrically fixed on both sides of the stator 13, a rotor is installed in the stator 13, the rotor includes a rotating shaft 11, the rotating shaft 11 penetrates the cover 10 through bearings and rotates, the end of the rotating shaft 11 is rotatably arranged on the fan cover 14 and fixedly provided with a fan 34, and a plurality of fins 15 are fixed on the stator 13 for enhancing heat dissipation.

[0031] The terminal box 12 is used for power connection, after power connection, the fan 34 is driven to rotate to cool the stator 13 and the cover 10;

[0032] A liquid cooling assembly is further installed on both sides of the stator 13, the liquid cooling assembly includes a No. 1 liquid storage structure 50 fixedly installed on the cover 10 and a No. 2 liquid storage structure 60 fixedly installed in the fan cover 14, the No. 1 liquid storage structure 50 and the No. 2 liquid storage structure 60 are fixedly communicated through a plurality of No. 1 water pipes 16, the No. 2 liquid storage structure 60 is fixedly communicated with a No. 2 water pipe 28, the No. 2 water pipe 28 is fixedly communicated with a water pump 27, the water pump 27 is fixedly installed on the fan cover 14, the water pump 27 is fixedly communicated with the No. 1 liquid storage structure 50 through a No. 3 water pipe 35, and the water pump 27 can transport the cooling liquid in the No. 2 liquid storage structure 60 from the No. 3 water pipe 35 to the No. 1 liquid storage structure 50 through the No. 2 water pipe 28 after being started, the cooling liquid in the No. 1 liquid storage structure 50 flows to the No. 2 liquid storage structure 60 from each No. 1 water pipe 16, and the circulation of the cooling liquid is realized.

[0033] Wherein, the bearing in the cover 10 is easy to overheat, in order to solve this problem, the applicant optimizes the first liquid storage structure 50 and the second liquid storage structure 60, specifically:

[0034] The first liquid storage structure 50 includes a first fixed ring 26 fixed with the cover 10 and a first movable ring 24 slidingly sleeved on the cover 10, a first membrane 25 and a second membrane 37 are fixedly arranged between the first movable ring 24 and the first fixed ring 26, wherein the first movable ring 24, the first fixed ring 26, the first membrane 25 and the second membrane 37 jointly form a first liquid storage cavity 36, and the first liquid storage cavity 36 is filled with cooling liquid;

[0035] The second liquid storage structure 60 includes a second fixed ring 29 fixed with the stator 13, a second movable ring 31 is arranged on one side of the second fixed ring 29, the second movable ring 31 is slidingly connected with the stator 13, and a third membrane 30 and a fourth membrane 38 are fixed between the second movable ring 31 and the second fixed ring 29, wherein the second fixed ring 29, the second movable ring 31, the third membrane 30 and the fourth membrane 38 jointly form a second liquid storage cavity 39, and the second liquid storage cavity 39 is filled with cooling liquid;

[0036] One end of the second water pipe 28 is fixedly communicated with the second liquid storage cavity 39, one end of the third water pipe 35 is fixedly communicated with the first liquid storage cavity 36, and both ends of the first water pipe 16 are fixedly communicated with the second liquid storage cavity 39 and the first liquid storage cavity 36 respectively;

[0037] The fixed sheet 21 is fixed on one of the bases 19, and an electric telescopic rod 22 is fixedly installed on the fixed sheet 21. The electric telescopic rod 22 controls the expansion and contraction of a hydraulic rod. The end of the hydraulic rod controlled by the electric telescopic rod 22 is fixedly connected to a connecting sheet 23. The connecting sheet 23 is fixed to a first movable ring 24. The connecting sheet 23 is fixed to a middle rod 18. The other end of the middle rod 18 is fixed to a second movable ring 31. The expansion and contraction of the electric telescopic rod 22 can drive the first movable ring 24 and the second movable ring 31 to move to one side simultaneously through the connecting sheet 23 and the middle rod 18, so that the coolant in the second liquid storage cavity 39 is squeezed into the first liquid storage cavity 36 through the first water pipe 16, so that the amount of coolant in the first liquid storage cavity 36 increases, or the coolant in the first liquid storage cavity 36 is squeezed into the second liquid storage cavity 39 through the first water pipe 16, so that the amount of coolant in the first liquid storage cavity 36 decreases. A temperature sensor is installed at the bearing position in the cover 10. When the temperature is detected to be too high, the coolant in the second liquid storage cavity 39 is squeezed into the first liquid storage cavity 36 through the first water pipe 16, so that the amount of coolant in the first liquid storage cavity 36 increases, thereby immediately rapidly cooling the position of the rotating shaft 11, effectively dealing with the dangerous situation of overheating of the bearing in the rotating shaft 11.

[0038] Furthermore, when the bearing temperature reaches a critical value, the overall temperature of the motor will be indirectly too high. In order to deal with this situation, the applicant installs a number of spray assemblies in the second liquid storage cavity 39. The spray assembly comprises a liquid collecting cylinder 47 fixed inside the second movable ring 31. A spraying groove 46 is formed in the liquid collecting cylinder 47. A piston 43 is slidably installed in the spraying groove 46. One end of the piston 43 is fixedly connected to an extension rod 41 penetrating through the liquid collecting cylinder 47. A push head 40 is fixed at the end of the extension rod 41. The piston 43 and the inner wall of the spraying groove 46 are fixed by a spring 42. A collection port 44 is formed in the side wall of the spraying groove 46 and located at one side of the piston 43. An atomizing nozzle 45 extending to the outside is fixed at the end of the liquid collecting cylinder 47. The spraying groove 46 is filled with coolant. When the second movable ring 31 is further pulled towards the cover 10, the push head 40 will contact the second fixed ring 29 (when the detection result of the temperature sensor does not reach the critical value, the push head 40 will not contact the second fixed ring 29), so as to be pushed by the second fixed ring 29. The spring 42 is stretched. The piston 43 moves along the spraying groove 46 to block the collection port 44 first. Then the piston 43 pushes the coolant in the spraying groove 46 out of the atomizing nozzle 45. The coolant sprayed out of the atomizing nozzle 45 is atomized. Under the blowing action of the fan 34, the atomized coolant is sprayed to each position on the stator 13, so as to realize rapid evaporation and heat dissipation.

[0039] In order to realize better heat dissipation effect, each said No. 1 water pipe 16 is installed between said fins 15.

[0040] The said No. 2 liquid storage structure 60 has the advantage of allowing as much cooling liquid as possible to be cooled by the blowing effect of said fan 34.

[0041] The applicant would like to particularly point out that a control box 20 is arranged on one side of said fixed plate 21 and is fixed to said base 19, said control box 20 is used to control the temperature of the temperature sensor received by the application, to control the operation of said electric telescopic rod 22, and the control program can consider using relatively stable PLC.

[0042] In order to facilitate installation, at least two guide plates 32 are fixed on said No. 2 moving ring 31, said guide plates 32 are provided with guide strips 33 which are opened and penetrated, and said guide strips 33 are fixed to said stator 13.

[0043] Said No. 1 film 25, said No. 2 film 37, said No. 3 film 30 and said No. 4 film 38 are made of rubber material, which has long mechanical life, is cheap and has good waterproof effect.

[0044] A slide 17 is arranged on said fan cover 14 to facilitate the movement of said middle rod 18.

[0045] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A motor with self-cooling function, comprising a cover (10), a stator (13) and a fan cover (14), wherein a terminal box (12) is fixedly installed on the stator (13), two machine bases (19) are symmetrically fixed on both sides of the stator (13), a rotor is installed in the stator (13), the rotor comprises a rotating shaft (11), the rotating shaft (11) penetrates the cover (10) through bearings and rotates, the rotating shaft (11) is rotatably arranged on the fan cover (14) and fixedly provided with a fan (34), and a plurality of fins (15) are fixed on the stator (13). Liquid cooling components are also installed on both sides of the stator (13), which include a first liquid storage structure (50) fixedly installed with the cover (10) and a second liquid storage structure (60) fixed in the fan cover (14), the first liquid storage structure (50) and the second liquid storage structure (60) are fixedly communicated through a plurality of first water pipes (16), the second liquid storage structure (60) is fixedly communicated with a second water pipe (28), the second water pipe (28) is fixedly communicated with a water pump (27), the water pump (27) is fixedly installed on the fan cover (14), and the water pump (27) is fixedly communicated with the first liquid storage structure (50) through a third water pipe (35); The first liquid storage structure (50) includes a first fixed ring (26) fixed with the cover (10) and a first movable ring (24) slidably sleeved on the cover (10), a first film (25) and a second film (37) are fixedly arranged between the first movable ring (24) and the first fixed ring (26), wherein the first movable ring (24), the first fixed ring (26), the first film (25) and the second film (37) together form a first liquid storage cavity (36), and the first liquid storage cavity (36) is filled with cooling liquid; The second liquid storage structure (60) includes a second fixed ring (29) fixed with the stator (13), a second movable ring (31) is arranged on one side of the second fixed ring (29), the second movable ring (31) is slidably connected with the stator (13), a third film (30) and a fourth film (38) are fixed between the second movable ring (31) and the second fixed ring (29), wherein the second fixed ring (29), the second movable ring (31), the third film (30) and the fourth film (38) together form a second liquid storage cavity (39), and the second liquid storage cavity (39) is filled with cooling liquid; One end of the second water pipe (28) is fixedly communicated with the second liquid storage cavity (39), one end of the third water pipe (35) is fixedly communicated with the first liquid storage cavity (36), and both ends of the first water pipe (16) are fixedly communicated with the second liquid storage cavity (39) and the first liquid storage cavity (36) respectively; The fixed sheet (21) is fixed on one of the bases (19), the electric telescopic rod (22) is fixedly installed on the fixed sheet (21), the electric telescopic rod (22) controls the hydraulic rod to be telescopic, the end of the hydraulic rod controlled by the electric telescopic rod (22) is fixedly connected with the connecting sheet (23), the connecting sheet (23) is fixed with the first movable ring (24), the intermediate rod (18) is fixed on the connecting sheet (23), the other end of the intermediate rod (18) is fixed with the second movable ring (31), the telescopic electric telescopic rod (22) can drive the first movable ring (24) and the second movable ring (31) to move to one side at the same time through the connecting sheet (23) and the intermediate rod (18), so that the cooling liquid in the second liquid storage cavity (39) is squeezed into the first liquid storage cavity (36) through the first water pipe (16), the cooling liquid in the first liquid storage cavity (36) is increased, or the cooling liquid in the first liquid storage cavity (36) is squeezed into the second liquid storage cavity (39) through the first water pipe (16), so that the cooling liquid in the first liquid storage cavity (36) is reduced, and the temperature sensor is installed at the bearing position in the cover body (10).

2. The electric machine with autonomous cooling function according to claim 1, characterized in that: A plurality of spray assemblies are installed in the second liquid storage cavity (39), the spray assembly comprises the liquid collecting cylinder (47) fixed in the inner side of the second movable ring (31), the spraying groove (46) is formed in the liquid collecting cylinder (47), the piston (43) is slidably installed in the spraying groove (46), one end of the piston (43) is fixed with the extension rod (41) penetrating through the liquid collecting cylinder (47), the push head (40) is fixed at the end of the extension rod (41), the piston (43) and the inner wall of the spraying groove (46) are fixed by the spring (42), the collecting opening (44) is formed in the side wall of the spraying groove (46) and located at one side of the piston (43), and the atomizing nozzle (45) extending to the outside is fixed at the end of the liquid collecting cylinder (47).

3. The electric machine with autonomous cooling function according to claim 1, characterized in that: Each first water pipe (16) is installed between the fins (15).

4. The electric machine with autonomous cooling function according to claim 1, characterized in that: The control box (20) fixed with the base (19) is arranged on one side of the fixed sheet (21).

5. The electric machine with autonomous cooling function according to claim 1, characterized in that: At least two guide sheets (32) are fixed on the second movable ring (31), guide strips (33) are arranged in the guide sheets (32) and penetrate through the guide sheets (32), and the guide strips (33) are fixed with the stator (13).

6. The electric machine with autonomous cooling function according to claim 1, characterized in that: The first membrane (25), the second membrane (37), the third membrane (30) and the fourth membrane (38) are made of rubber material, and the slide (17) is formed in the fan cover (14).

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