CN109842243B - Inner stator motor cooling device, motor and inner stator motor cooling method - Google Patents
Inner stator motor cooling device, motor and inner stator motor cooling method Download PDFInfo
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- CN109842243B CN109842243B CN201910284841.2A CN201910284841A CN109842243B CN 109842243 B CN109842243 B CN 109842243B CN 201910284841 A CN201910284841 A CN 201910284841A CN 109842243 B CN109842243 B CN 109842243B
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- 238000001816 cooling Methods 0.000 title claims abstract description 80
- 239000007788 liquid Substances 0.000 claims abstract description 151
- 239000000110 cooling liquid Substances 0.000 claims abstract description 71
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 238000004080 punching Methods 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 239000002826 coolant Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides an inner stator motor cooling device, a motor and an inner stator motor cooling method, and belongs to the technical field of motor heat dissipation. The motor adopts the cooling device of the inner stator motor. The cooling method of the inner stator motor adopts the cooling device of the inner stator motor. According to the inner stator motor cooling device provided by the invention, cooling liquid enters from the liquid inlet pipe and flows into the sealing cavity on the mounting seat through the liquid inlet hole, heat generated by the stator is subjected to heat exchange with the cooling liquid in the sealing cavity to achieve the purpose of cooling the stator, and the cooling liquid enters the liquid outlet hole after reaching a certain amount in the sealing cavity and flows out through the gap between the first blind hole and the liquid inlet pipe to form a stable cooling liquid circulation system. The cooling mode has the advantages of low punching difficulty, convenience in processing and capability of avoiding the dangerous condition that cooling water enters the motor to burn out the coil due to the fact that two eccentric holes are formed.
Description
Technical Field
The invention belongs to the technical field of motor heat dissipation, and particularly relates to an inner stator motor cooling device, a motor adopting the inner stator motor cooling device and an inner stator motor cooling method adopting the inner stator motor cooling device.
Background
The loss of the motor comprises copper loss, iron loss, stray loss and the like, wherein the copper loss and most of the iron loss are positioned at the side of the stator, so that the heat dissipation area of the inner stator is smaller than that of the outer stator structure for the motor with the inner stator structure, the heat in the motor is not easy to dissipate, the heat in the motor is gathered, and the temperature rise of the motor is too high and even the motor is burnt.
The motor with the inner stator structure can adopt an air cooling mode and a water cooling mode, and the water cooling structure generally adopts a mode of punching in the middle of a shaft and water inlet and outlet at one end or water inlet and outlet at two ends. The water inlet and outlet are arranged at one end, namely the water inlet and outlet are led out by adopting pipelines, so that the problems that a central hole is large and the motor shaft is inapplicable when being thin or the problems that a water inlet and outlet pipe is too thin, the flow is small and the heat dissipation effect is poor exist; both ends business turn over water, one end is intake promptly, and one end goes out water, and the lead wire of motor will be followed and intake the end or go out the water end and draw forth, just so need beat the problem of two eccentric orfices in the one end of axle, this greatly increased the degree of difficulty of punching to in case the hole of lead wire and the hole in water route are linked together because the deviation of punching, have the danger that the cooling water got into the inside burning coil of motor.
Disclosure of Invention
The invention aims to provide an inner stator motor cooling device, a motor and an inner stator motor cooling method, and aims to solve the technical problems of high punching difficulty and potential safety hazard in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is an inner stator motor cooling device, including:
the mounting seat is provided with a sealing cavity for containing cooling liquid, and the outer side surface of the mounting seat is fixedly connected with the stator;
the connecting shaft penetrates through the sealing cavity, and two ends of the connecting shaft are respectively positioned outside the mounting seat; one end of the connecting shaft is provided with a first blind hole; a liquid inlet hole and a liquid outlet hole which are communicated with the first blind hole are formed in the outer side surface of the section of the connecting shaft, which is positioned in the sealing cavity;
one end of the liquid inlet pipe extends into the first blind hole and is communicated with the liquid inlet hole, and the other end of the liquid inlet pipe is used for filling cooling liquid towards the liquid inlet pipe; and a gap for the liquid outlet of the liquid outlet hole is formed between the outer wall of the liquid inlet pipe and the inner wall of the first blind hole.
Further, the inner stator motor cooling device further includes:
the first support is fixedly arranged at one end of the connecting shaft;
and a first connecting hole and a second connecting hole which are communicated with the liquid inlet pipe and the first blind hole are respectively formed in one side surface of the first support close to the connecting shaft.
Further, the inner stator motor cooling device further includes:
the second support is arranged in the first blind hole; and the second support is provided with a bent hole, and two ends of the bent hole are respectively communicated with one end of the liquid inlet pipe and the liquid inlet hole.
Furthermore, an elbow used for cooling liquid to flow into the sealing cavity is arranged on the liquid inlet hole.
Furthermore, a liquid outlet pipe which extends vertically and upwards is arranged on the liquid outlet hole.
Further, the liquid inlet hole and the liquid outlet hole are arranged in a back-to-back mode.
Further, the mount includes:
the outer cover plate is used for being installed in the stator in a matching mode;
the number of the end plates is two, and the two end plates are respectively arranged at two ends of the outer cover plate;
the outer cover plate and the two end plates form the sealed cavity; and two ends of the connecting shaft are respectively positioned at the outer sides of the corresponding end plates.
The cooling device of the inner stator motor provided by the invention has the beneficial effects that: compared with the prior art, the cooling device for the motor of the inner stator has the advantages that the cooling liquid enters from the liquid inlet pipe and flows into the sealing cavity on the mounting seat through the liquid inlet hole, the heat generated by the stator and the cooling liquid in the sealing cavity are subjected to heat exchange to achieve the effect of cooling the stator, and the cooling liquid enters the liquid outlet hole after reaching a certain amount in the sealing cavity and flows out through the gap between the first blind hole and the liquid inlet pipe to form a stable cooling liquid circulation system. The cooling mode only needs to arrange the first blind hole on the connecting shaft, so that the punching difficulty is low, the processing is convenient, and the dangerous condition that the cooling liquid enters the motor to burn out the coil due to the arrangement of two eccentric holes is avoided.
Another object of the present invention is to provide a motor including any one of the above inner stator motor cooling devices.
The motor provided by the invention can effectively dissipate heat due to the adoption of the inner stator motor cooling device, has high safety and can stably work.
The invention also provides a cooling method of the inner stator motor, which adopts any one of the cooling devices of the inner stator motor, and comprises the following steps:
a sealing cavity is formed in the mounting seat;
one end of the connecting shaft is provided with a first blind hole; arranging a liquid inlet hole and a liquid outlet hole which are communicated with the first blind hole on the outer side surface of the section of the connecting shaft positioned in the sealing cavity;
one end of a liquid inlet pipe extends into the first blind hole and is communicated with the liquid inlet hole, and a gap is reserved between the outer wall of the liquid inlet pipe and the inner wall of the first blind hole;
fixedly mounting the mounting seat in the stator, and checking the tightness of the motor cooling device of the inner stator;
the other end of the liquid inlet pipe is communicated with external cooling liquid, and the hole opening of the first blind hole is communicated with an external cooling liquid inlet;
cooling liquid enters from the liquid inlet pipe and enters the sealed cavity through the liquid outlet hole, and heat generated by the stator and the cooling liquid entering the sealed cavity are subjected to heat exchange;
when the height of the cooling liquid is higher than that of the liquid outlet hole, the cooling liquid enters the liquid outlet hole and flows back to the external cooling liquid through a gap between the first blind hole and the liquid inlet pipe.
The invention provides a method for cooling an inner stator motor, which comprises the steps of firstly installing a cooling device of the inner stator motor in a stator, checking the sealing performance of the cooling device of the inner stator motor, then respectively connecting external cooling liquid with a liquid inlet pipe and a first blind hole, then enabling the cooling liquid to enter the liquid inlet pipe and flow into a sealing cavity through the liquid inlet hole, carrying out heat exchange on heat generated by the stator and the cooling liquid in the sealing cavity to achieve the purpose of cooling the stator, enabling the cooling liquid to enter a liquid outlet hole after a certain amount of the cooling liquid in the sealing cavity and flow out through the first blind hole to form a stable cooling liquid circulation system. The cooling method for the motor of the inner stator is simple to operate and convenient to process, can avoid the dangerous situation that cooling liquid enters the motor to burn out a coil due to the fact that two eccentric holes are formed, and is high in safety.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a sectional view of a cooling apparatus of an inner stator motor according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
fig. 3 is a schematic view illustrating a circulation flow of a cooling fluid of a cooling apparatus of an inner stator motor according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1. a mounting seat; 11. sealing the cavity; 12. an outer cover plate; 13. an end plate; 2. a connecting shaft; 21. a first blind hole; 22. a liquid inlet hole; 23. a liquid outlet hole; 24. a liquid outlet pipe; 3. a liquid inlet pipe; 31. bending the pipe; 4. a first support; 41. a first connection hole; 42. a second connection hole; 5. a second support; 51. bending the hole; 52. a second blind hole; 6. a stator; 61. and a stator coil.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3, a cooling apparatus for an inner stator motor according to the present invention will now be described. A cooling device for an inner stator motor comprises a mounting seat 1, a connecting shaft 2 and a liquid inlet pipe 3, wherein the mounting seat 1 is provided with a sealing cavity 11 for containing cooling liquid, and the outer side surface of the mounting seat is fixedly connected with a stator 6; the connecting shaft 2 penetrates through the sealing cavity 11, and two ends of the connecting shaft are respectively positioned outside the mounting seat 1; one end of the connecting shaft 2 is provided with a first blind hole 21; a liquid inlet hole 22 and a liquid outlet hole 23 which are communicated with the first blind hole 21 are arranged on the outer side surface of one section of the connecting shaft 2 positioned in the sealing cavity 11; one end of the liquid inlet pipe 3 extends into the first blind hole 21 and is communicated with the liquid inlet hole 22, and the other end of the liquid inlet pipe 3 is used for filling cooling liquid towards the liquid inlet pipe 3; a gap for liquid outlet of the liquid outlet hole 23 is arranged between the outer wall of the liquid inlet pipe 3 and the inner wall of the first blind hole 21.
Compared with the prior art, the cooling liquid enters from the liquid inlet pipe 3 and flows into the sealing cavity 11 on the mounting seat 1 through the liquid inlet hole 22, heat generated by the stator 6 exchanges heat with the cooling liquid in the sealing cavity 11 to achieve the purpose of cooling the stator 6, and the cooling liquid enters the liquid outlet hole 23 after reaching a certain amount in the sealing cavity 11 and flows out through a gap between the first blind hole 21 and the liquid inlet pipe 3 to form a stable cooling liquid circulation system. This kind of cooling method only needs to set up a first blind hole 21 on connecting axle 2, and the degree of difficulty of punching is lower, and the processing of being convenient for has also avoided setting up two eccentric orfices and easily appearing the dangerous condition that cooling water gets into the inside burning coil of motor simultaneously.
When the cooling device is used, the other end of the liquid inlet pipe 3 is communicated with a storage tank of cooling liquid, or a cooling water tank, or circulating water in a factory. First blind hole 21 also communicates with the storage box, makes the coolant liquid get into sealed chamber 11 in the storage box via feed liquor hole 22 to in flowing out to the storage box by play liquid hole 23, form circulation system, can make the coolant liquid in sealed chamber 11 be in lower temperature all the time, make the heat of stator 6 can be very fast take place to exchange with the coolant liquid, cooling efficiency is higher. The inner stator motor cooling device realizes the liquid cooling circulation function of the inner stator 6 motor, and has good heat dissipation effect. The liquid inlet pipe 3 is made of a stainless steel pipe. The joint of the connecting shaft 2 and the sealing cavity 11 is sealed. The cooling liquid can adopt cold water or other low-temperature liquid. The heat energy generated by the stator 6 mainly originates from the stator coil 61 and the stator core. One end of the connecting shaft 2 remote from the first blind hole 21 is provided with a center hole for passing a wire of the stator coil 61.
Referring to fig. 1, as a specific embodiment of the cooling device for the motor of the inner stator provided by the present invention, the cooling device for the motor of the inner stator further includes a first support 4, wherein the first support 4 is fixedly disposed at one end of the connecting shaft 2; first support 4 is equipped with first connecting hole 41 and second connecting hole 42 that are linked together with feed liquor pipe 3 and first blind hole 21 on being close to the side of connecting axle 2 respectively, and the other end of feed liquor pipe 3 fills the coolant liquid into through first connecting hole 41 to feed liquor pipe 3, sets up the internal thread in first connecting hole 41, sets up the external screw thread at the other end of feed liquor pipe 3, makes feed liquor pipe 3 and first connecting hole 41 pass through threaded connection together, and stability is high. The liquid inlet pipe 3 can also be fixedly connected with the first support 4 in a welding mode. The second connecting hole 42 is communicated with the first blind hole 21, the cooling liquid flows out from the liquid outlet hole 23, the first blind hole 21 and the second connecting hole 42, and the first connecting hole 41 and the second connecting hole 42 are communicated with a storage box. One side of the first support 4 close to the connecting shaft 2 is fixedly connected with the connecting shaft 2, and a welding mode can be adopted to avoid liquid leakage. First connecting hole 41 and second connecting hole 42 are all located on first support 4, have avoided the feed liquor and have gone out the liquid and need adopt two water pipe settings to have the big problem of main shaft centre bore in the main shaft, also avoid making the liquid inlet and outlet pipe 24 that sets up in the motor shaft too thin because of the motor shaft is too thin to cause the flow little and lead to the problem that the radiating effect is poor. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 and 2, as a specific embodiment of the cooling device for the motor of the inner stator provided by the present invention, the cooling device for the motor of the inner stator further includes a second support 5, and the second support 5 is disposed in the first blind hole 21; be equipped with the curved hole 51 that both ends communicate with the one end of feed liquor pipe 3 respectively and be linked together with feed liquor hole 22 on the second support 5, the both ends of feed liquor pipe 3 set up the external screw thread respectively, all be equipped with the internal thread on second support 5 and the first support 4, with feed liquor pipe 3 respectively first support 4 and second support 5 fixed connection, and feed liquor pipe 3 all communicates with first connecting hole 41 and feed liquor hole 22, set up curved hole 51 on second support 5, feed liquor pipe 3 that messenger's axial stretched into first blind hole 21 is linked together through curved hole 51 and the drain hole 23 of radial setting. The curved hole 51 may also be formed by a second blind hole 52 formed on the second support 5 and a through hole having two ends respectively communicated with the second blind hole 52 and the liquid inlet hole 22. The liquid inlet pipe 3 can also be fixedly connected with the second support 5 in a welding mode. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Referring to fig. 1 to 3, as a specific embodiment of the cooling apparatus for an inner stator motor according to the present invention, the liquid inlet hole 22 is provided with an elbow 31 for the cooling liquid to flow into the sealed cavity 11, and the elbow 31 is disposed to allow the cooling liquid to flow from the liquid inlet hole 22 into the sealed cavity 11 through the elbow 31, so as to reduce the impact of the cooling liquid on the sealed cavity 11, so that the cooling liquid flows smoothly and gently, and the vibration of the cooling liquid on the stator core and the stator coil 61 is reduced. The elbow 31 is kept away from the one end connecting tube of feed liquor hole 22, and the coolant liquid flows to the pipeline from elbow 31 and enters into in the seal chamber 11, makes during the coolant liquid can flow into seal chamber 11 gently to the pipeline extends to the direction that is kept away from liquid hole 23, makes the coolant liquid flow out from liquid hole 23 again after filling gradually whole seal chamber 11, and the cooling effect is better.
Referring to fig. 1 to 3, in an embodiment of the cooling apparatus for an inner stator motor according to the present invention, a liquid outlet pipe 24 extending vertically upward is disposed on the liquid outlet hole 23, the liquid outlet pipe 24 is disposed to be communicated with the liquid outlet hole 23, and after reaching a certain amount in the sealed cavity 11, the cooling liquid first enters the liquid outlet pipe 24 and then flows out through the liquid outlet hole 23. During installation, the liquid outlet hole 23 can be positioned at the upper side of the connecting shaft 2, the liquid inlet hole 22 is positioned at the lower side of the connecting shaft 2, cooling liquid enters the sealed cavity 11 from the liquid inlet hole 22, the distance between the liquid inlet hole 22 and the sealed cavity 11 is small, and the cooling liquid can enter the sealed cavity 11 gently; meanwhile, the liquid outlet pipe 24 is vertically arranged, so that the upper end of the liquid outlet pipe 24 is close to the upper side of the sealed cavity 11, the cooling liquid can almost overflow the sealed cavity 11 in the mode, all parts of the stator 6 can be subjected to heat exchange together, and the purpose of rapid cooling is achieved. The top end of the liquid outlet pipe 24 is arranged at the upper end in the sealed cavity 11, so that the cavity can be kept in a full state of cooling liquid, the cooling effect is good, and the problems of unsmooth circulation and overheating local temperature caused by gas blockage in the sealed cavity 11 can be avoided.
Referring to fig. 1 and 2, as a specific embodiment of the cooling apparatus for an inner stator motor according to the present invention, the liquid inlet hole 22 and the liquid outlet hole 23 are disposed opposite to each other, and the distance between the liquid outlet hole 23 and the liquid inlet hole 22 is relatively long, so that the cooling liquid can flow in a relatively large range after entering the sealed cavity 11 from the liquid inlet hole 22, thereby better cooling heat on the stator 6. The liquid outlet hole 23 is positioned on the upper side of the connecting shaft 2, and the liquid inlet hole 22 is positioned on the lower side of the connecting shaft 2, so that the stator 6 can be cooled more efficiently. Can change the effect of going out liquid hole 23 and feed liquor hole 22 during the use according to the installation direction of motor, when motor installation was opposite with the figure shown direction, can get into the coolant liquid by going out liquid hole 23, flowed out the coolant liquid by feed liquor hole 22 to reach better cooling effect.
Referring to fig. 1 to 3, as an embodiment of the inner stator motor cooling device provided by the present invention, the mounting base 1 includes an outer cover plate 12 and an end plate 13, the outer cover plate 12 is used to be installed in the stator 6 in a matching manner; the number of the end plates 13 is two, and the two end plates are respectively arranged at two ends of the outer cover plate 12; the outer cover plate 12 and the two end plates 13 form a sealed cavity 11; the two ends of the connecting shaft 2 are respectively located at the outer sides of the corresponding end plates 13, the outer cover plate 12 can adopt a sleeve structure, the outer side surface of the outer cover plate 12 is installed in the stator 6 in a matching mode, and the two end plates 13 are respectively arranged at the two sides of the outer cover plate 12 and form a sealed cavity 11 with the outer cover plate 12. This structure is simple, easy to install and of low weight, reducing the load of the stator 6. During installation, the liquid inlet pipe 3, the first support 4 and the second support 5 are installed, the second support 5 and the liquid inlet pipe 3 extend into the first blind hole 21, and then the first support 4 is fixed on the connecting shaft 2. It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the drawings, embodiments of the present invention further provide a motor including any one of the above inner stator motor cooling devices.
The motor provided by the embodiment of the invention adopts the cooling device of the inner stator motor, can effectively dissipate heat, has high safety and can stably work.
The embodiment of the invention also provides an inner stator motor cooling method, which adopts any one of the inner stator motor cooling devices, and comprises the following steps:
a sealing cavity 11 is arranged in the mounting seat 1 of the stator 6;
one end of the connecting shaft 2 is provided with a first blind hole 21; a liquid inlet hole 22 and a liquid outlet hole 23 which are communicated with the first blind hole 21 are formed in the outer side surface of one section of the connecting shaft 2 positioned in the sealing cavity 11;
one end of the liquid inlet pipe 3 extends into the first blind hole 21 and is communicated with the liquid inlet hole 22, and a gap is reserved between the outer wall of the liquid inlet pipe 3 and the inner wall of the first blind hole 21;
fixedly mounting the mounting seat 1 in the stator 6, and checking the tightness of the motor cooling device of the inner stator;
the other end of the liquid inlet pipe 3 is communicated with external cooling liquid, and the orifice of the first blind hole 21 is communicated with an external cooling liquid inlet;
the cooling liquid enters from the liquid inlet pipe 3 and enters the sealed cavity 11 through the liquid outlet hole 23, and the stator 6 exchanges heat with the cooling liquid entering the sealed cavity 11;
when the height of the cooling liquid is higher than that of the liquid outlet hole 23, the cooling liquid enters the liquid outlet hole 23 and flows back to the external cooling liquid through the gap between the first blind hole 21 and the liquid inlet pipe 3.
The invention provides a method for cooling an inner stator motor, which comprises the steps of firstly installing the inner stator motor cooling device in a stator 6, checking the sealing performance of the inner stator motor cooling device, then respectively connecting external cooling liquid with a liquid inlet pipe 3 and a first blind hole 21, then enabling the cooling liquid to enter the liquid inlet pipe 3 and flow into a sealed cavity 11 through a liquid inlet hole 22, carrying out heat exchange between heat generated by a stator coil 61 and a stator iron core and the cooling liquid in the sealed cavity 11 to achieve the effect of cooling the stator 6, enabling the cooling liquid to enter a liquid outlet hole 23 after a certain amount of the cooling liquid reaches the sealed cavity 11, and enabling the cooling liquid to flow out through the first blind hole 21 to form a stable cooling liquid circulating system. The cooling method for the motor of the inner stator is simple to operate and convenient to process, can avoid the dangerous situation that cooling liquid enters the motor to burn out a coil due to the fact that two eccentric holes are formed, and is high in safety.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The inner stator motor cooling device, its characterized in that includes:
the mounting seat is provided with a sealing cavity for containing cooling liquid, and the outer side surface of the mounting seat is fixedly connected with the stator;
the connecting shaft penetrates through the sealing cavity, and two ends of the connecting shaft are respectively positioned outside the mounting seat; one end of the connecting shaft is provided with a first blind hole; a liquid inlet hole and a liquid outlet hole which are communicated with the first blind hole are formed in the outer side surface of the section of the connecting shaft, which is positioned in the sealing cavity;
one end of the liquid inlet pipe extends into the first blind hole and is communicated with the liquid inlet hole, and the other end of the liquid inlet pipe is used for filling cooling liquid towards the liquid inlet pipe; a gap for liquid outlet of the liquid outlet hole is formed between the outer wall of the liquid inlet pipe and the inner wall of the first blind hole;
the inner stator motor cooling device further comprises:
the first support is fixedly arranged at one end of the connecting shaft;
a first connecting hole and a second connecting hole which are communicated with the liquid inlet pipe and the first blind hole are respectively formed in one side surface, close to the connecting shaft, of the first support; the first connecting hole and the second connecting hole are respectively positioned at the upper side and the lower side of the first support;
a liquid outlet pipe extending vertically upwards is arranged on the liquid outlet hole, and the upper end of the liquid outlet pipe is close to the upper side of the sealing cavity;
the liquid inlet hole is provided with an elbow used for cooling liquid to flow into the sealing cavity; the end of the elbow far away from the liquid inlet hole is connected with the pipeline, and the pipeline extends in the direction back to the liquid outlet hole.
2. The inner stator motor cooling device as claimed in claim 1, further comprising:
the second support is arranged in the first blind hole; and the second support is provided with a bent hole, and two ends of the bent hole are respectively communicated with one end of the liquid inlet pipe and the liquid inlet hole.
3. The inner stator motor cooling arrangement as claimed in claim 1, wherein said inlet opening and said outlet opening are located opposite each other.
4. The inner stator motor cooling device as claimed in any one of claims 1 to 3, wherein the mounting seat comprises:
the outer cover plate is used for being installed in the stator in a matching mode;
the number of the end plates is two, and the two end plates are respectively arranged at two ends of the outer cover plate;
the outer cover plate and the two end plates form the sealed cavity; and two ends of the connecting shaft are respectively positioned at the outer sides of the corresponding end plates.
5. An electric machine comprising an inner stator electric machine cooling arrangement as claimed in any of claims 1-4.
6. An inner stator motor cooling method comprising the inner stator motor cooling apparatus as claimed in any one of claims 1 to 4,
a sealing cavity is formed in the mounting seat;
one end of the connecting shaft is provided with a first blind hole; arranging a liquid inlet hole and a liquid outlet hole which are communicated with the first blind hole on the outer side surface of the section of the connecting shaft positioned in the sealing cavity;
one end of a liquid inlet pipe extends into the first blind hole and is communicated with the liquid inlet hole, and a gap is reserved between the outer wall of the liquid inlet pipe and the inner wall of the first blind hole;
fixedly mounting the mounting seat in the stator, and checking the tightness of the motor cooling device of the inner stator;
the other end of the liquid inlet pipe is communicated with external cooling liquid, and the hole opening of the first blind hole is communicated with an external cooling liquid inlet;
cooling liquid enters from the liquid inlet pipe and enters the sealed cavity through the liquid outlet hole, and heat exchange is carried out between the stator and the cooling liquid entering the sealed cavity;
when the height of the cooling liquid is higher than that of the liquid outlet hole, the cooling liquid enters the liquid outlet hole and flows back to the external cooling liquid through a gap between the first blind hole and the liquid inlet pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408252.2A CN109378940A (en) | 2018-11-23 | 2018-11-23 | Inner stator Water cooling device for motor and water-cooling method |
| CN2018114082522 | 2018-11-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109842243A CN109842243A (en) | 2019-06-04 |
| CN109842243B true CN109842243B (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811408252.2A Pending CN109378940A (en) | 2018-11-23 | 2018-11-23 | Inner stator Water cooling device for motor and water-cooling method |
| CN201910284841.2A Active CN109842243B (en) | 2018-11-23 | 2019-04-10 | Inner stator motor cooling device, motor and inner stator motor cooling method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811408252.2A Pending CN109378940A (en) | 2018-11-23 | 2018-11-23 | Inner stator Water cooling device for motor and water-cooling method |
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| CN111740545B (en) * | 2020-08-26 | 2020-11-27 | 江苏嘉轩智能工业科技股份有限公司 | Air-water cooling hybrid cooling's permanent magnetism cylinder |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003092857A (en) * | 2001-09-20 | 2003-03-28 | Hitachi Ltd | Microgasturbine generator |
| CN202818007U (en) * | 2012-09-29 | 2013-03-20 | 夏致俊 | High-temperature rotor water circulating cooling device |
| CN204681184U (en) * | 2015-05-27 | 2015-09-30 | 博深工具股份有限公司 | Rotor water-cooling structure |
| CN206135632U (en) * | 2016-05-24 | 2017-04-26 | 徐州曼特电子有限公司 | Motor cooling system |
| CN106662255A (en) * | 2014-09-30 | 2017-05-10 | 西门子公司 | Liquid-cooled electric machine |
| CN206211770U (en) * | 2016-09-13 | 2017-05-31 | 南京纳帝机电技术有限公司 | A kind of cooling devcie of motor |
| CN206237252U (en) * | 2016-10-27 | 2017-06-09 | 蔚来汽车有限公司 | For the water-cooling structure of rotor |
| CN206383366U (en) * | 2016-12-28 | 2017-08-08 | 汕头市金田塑业有限公司 | A kind of double water inlets pair go out water chill rolls |
-
2018
- 2018-11-23 CN CN201811408252.2A patent/CN109378940A/en active Pending
-
2019
- 2019-04-10 CN CN201910284841.2A patent/CN109842243B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003092857A (en) * | 2001-09-20 | 2003-03-28 | Hitachi Ltd | Microgasturbine generator |
| CN202818007U (en) * | 2012-09-29 | 2013-03-20 | 夏致俊 | High-temperature rotor water circulating cooling device |
| CN106662255A (en) * | 2014-09-30 | 2017-05-10 | 西门子公司 | Liquid-cooled electric machine |
| CN204681184U (en) * | 2015-05-27 | 2015-09-30 | 博深工具股份有限公司 | Rotor water-cooling structure |
| CN206135632U (en) * | 2016-05-24 | 2017-04-26 | 徐州曼特电子有限公司 | Motor cooling system |
| CN206211770U (en) * | 2016-09-13 | 2017-05-31 | 南京纳帝机电技术有限公司 | A kind of cooling devcie of motor |
| CN206237252U (en) * | 2016-10-27 | 2017-06-09 | 蔚来汽车有限公司 | For the water-cooling structure of rotor |
| CN206383366U (en) * | 2016-12-28 | 2017-08-08 | 汕头市金田塑业有限公司 | A kind of double water inlets pair go out water chill rolls |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109842243A (en) | 2019-06-04 |
| CN109378940A (en) | 2019-02-22 |
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Denomination of invention: Internal stator motor cooling device, motor and internal stator motor cooling method Effective date of registration: 20220507 Granted publication date: 20210615 Pledgee: Bank of China Limited Shijiazhuang Gaocheng sub branch Pledgor: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Registration number: Y2022130000030 |
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Denomination of invention: Internal stator motor cooling device, motor, and internal stator motor cooling method Effective date of registration: 20230711 Granted publication date: 20210615 Pledgee: Bank of China Limited Shijiazhuang Gaocheng sub branch Pledgor: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Registration number: Y2023980048157 |
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