CN114785030A - Heat dissipation casing, motor and air compressor machine - Google Patents
Heat dissipation casing, motor and air compressor machine Download PDFInfo
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- CN114785030A CN114785030A CN202210563958.6A CN202210563958A CN114785030A CN 114785030 A CN114785030 A CN 114785030A CN 202210563958 A CN202210563958 A CN 202210563958A CN 114785030 A CN114785030 A CN 114785030A
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- heat dissipation
- heat
- flow channel
- air
- housing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
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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
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of radiating casings, and particularly relates to a radiating casing, a motor and an air compressor. The heat dissipation casing includes: a housing; the shell is provided with a first heat dissipation flow channel and a second heat dissipation flow channel, the first heat dissipation flow channel is provided with a liquid inlet and a liquid outlet and is used for introducing cooling liquid into the first heat dissipation flow channel, and the cooling liquid absorbs heat conducted to the wall of the first heat dissipation flow channel and flows out of the shell; the second heat dissipation flow is provided with an air inlet and an air outlet which are respectively communicated with the interior of the shell, so that the air flow in the shell flows into the second heat dissipation flow channel, and the air flow in the second heat dissipation flow channel transfers heat to the wall of the second heat dissipation flow channel and then flows back into the shell through the air outlet; the first heat dissipation runner wall and the second heat dissipation runner wall are in heat conduction relation with the shell. According to the two-way cooling type motor, heat is dissipated in an air cooling mode and a water cooling mode, the motor is uniform in heat dissipation, meanwhile, an opening structure communicated with the outside is not formed in the shell, and the protection grade of the heat dissipation shell can be effectively guaranteed while the heat dissipation effect is guaranteed.
Description
Technical Field
The invention belongs to the technical field of heat dissipation, and particularly relates to a heat dissipation casing, a motor and an air compressor.
Background
Most of the existing machine cases adopt an air-cooling independent cooling mode, air cooling mainly is that a power device inside the machine case rotates to exchange heat with external air, the heat exchange is realized by a single air-cooling heat dissipation mode due to the mode of providing communicated external air, the machine case is applied to a motor as an example, high-temperature air inside the motor flows and flows with the external air through a ventilation opening of the machine case, and therefore heat dissipation of the motor is carried out.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a heat dissipation shell capable of improving the heat dissipation performance of a motor, the motor and an air compressor.
In order to solve the above technical problems, the present invention provides a heat dissipation casing, which includes a casing;
be equipped with first heat dissipation runner and second heat dissipation runner on the casing, wherein: the first heat dissipation flow channel is provided with a liquid inlet and a liquid outlet and is used for introducing cooling liquid into the first heat dissipation flow channel, and the cooling liquid absorbs heat conducted to the wall of the first heat dissipation flow channel in the first heat dissipation flow channel and flows out of the shell through the liquid outlet; the second heat dissipation flow is provided with an air inlet and an air outlet, the air inlet and the air outlet are respectively communicated with the interior of the shell, so that air flow in the shell can flow into the second heat dissipation flow channel through the air inlet, and the air flow in the second heat dissipation flow channel transfers heat to the wall of the second heat dissipation flow channel and then flows back into the shell through the air outlet; the first heat dissipation runner wall and the second heat dissipation runner wall are in heat conduction relation with the shell. According to the two-path cooling, heat is dissipated through an air cooling mode and a water cooling mode, one path of cooling is heat conduction cooling, the other path of cooling is heat convection cooling, the heat dissipation of the motor is uniform, meanwhile, an opening structure communicated with the outside is not formed in the shell, and the protection grade of the heat dissipation shell can be effectively guaranteed while the heat dissipation effect is guaranteed.
Further optionally, the second heat dissipation flow channels are arranged among the first heat dissipation flow channels at intervals.
Further optionally, the first heat dissipation channel includes a plurality of first axial channels extending along the axial direction of the housing, the second heat dissipation channel includes a plurality of second axial channels extending along the axial direction of the housing, and the plurality of first axial channels and the plurality of second axial channels are distributed in a staggered manner in the circumferential direction of the housing.
Further optionally, the first heat dissipation flow path comprises one or more axially reciprocating, circumferentially extending serpentine tubes along the housing, the axial extension of one or more of the serpentine tubes forming the first axial flow path.
Further alternatively, the first heat dissipation flow channel and the second heat dissipation flow channel are provided on an inner wall surface of a side wall of the housing or inside the side wall of the housing or integrally formed by the side wall of the housing.
Further optionally, the side wall of the housing includes an outer wall surface and an inner wall surface, and the first heat dissipation flow channel and the second heat dissipation flow channel are located between the outer wall surface and the inner wall surface; the liquid inlet and the liquid outlet are formed in the outer wall surface, the liquid inlet is communicated with the liquid inlet end of the first heat dissipation flow channel, and the liquid outlet is communicated with the liquid outlet end of the first heat dissipation flow channel; the air inlet and the air outlet are formed in the inner wall surface of the shell.
Further optionally, along the axial direction of the housing, a value range of a ratio of a sectional area of the first heat dissipation flow channel to a sectional area of the second heat dissipation flow channel is: 7: 3-8: 2.
Further optionally, a cross section of the first heat dissipation flow channel is rectangular.
The invention also provides a motor which comprises the heat dissipation casing.
Further optionally, the stator and the rotor are arranged in the heat dissipation casing;
the first heat dissipation flow channel and the stator form a first thermal coupling relation mainly based on heat conduction;
the second heat dissipation flow channel and the rotor form a second thermal coupling relation mainly based on heat convection.
Further optionally, the motor includes an air supply device, the air supply device is disposed in the casing, and when the air supply device rotates, the air flow in the casing can enter the second heat dissipation flow channel through the air inlet.
Furthermore, the air supply device comprises blades arranged at one end or two ends of the rotor in the axial direction, and when the rotor drives the blades to rotate, the air flow in the shell can enter the second heat dissipation flow channel through the air inlet.
Further optionally, an axially-through hole is formed in the rotor, and when the rotor drives the blades to rotate, the blades disturb the flow of gas in the casing, so that the gas passes through the through hole and enters the second heat dissipation flow channel from the air inlet.
Further optionally, the stator is wound with windings, and the winding positions at two axial ends of the stator are filled with heat conducting materials.
The invention also provides an air compressor which comprises the radiating shell or the motor.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the heat dissipation casing structure is designed with two paths of cooling, one path is used for heat conduction cooling, the other path is used for heat convection cooling, heat dissipation is carried out through two modes of air cooling and water cooling, the heat dissipation of the motor is uniform, and the temperature of an internal rotor is reduced by more than 10%.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments and that for a person skilled in the art, other drawings can also be derived from them without inventive effort. In the drawings:
FIG. 1: is one of the structural schematic diagrams of the prior art enclosure embodiment.
FIG. 2: is a second schematic structural diagram of the prior art housing embodiment.
FIG. 3: is one of the structural diagrams of the heat dissipation chassis in the embodiment of the invention.
FIG. 4: the second embodiment of the present invention is a second embodiment of a heat dissipation housing.
FIG. 5: the motor end cover is a schematic structural diagram in the embodiment of the invention.
FIG. 6: the structure of the first heat dissipation channel and the second heat dissipation channel in the embodiment of the invention is schematically illustrated.
FIG. 7: is a schematic structural diagram of the motor in the embodiment of the invention.
FIG. 8: is a structural schematic diagram of the stator in the embodiment of the invention.
FIG. 9: is one of the structural schematic diagrams of the rotor in the embodiment of the invention.
FIG. 10: the second schematic structural diagram of the rotor in the embodiment of the present invention is shown.
Wherein: 1-a heat dissipation casing; 11-a housing; 12-a first heat dissipation flow channel; 13-a second heat dissipation flow channel; 14-a liquid inlet; 15-a liquid outlet; 16-an air inlet; 17-air outlet;
2-a stator; 21-a thermally conductive material; 22 windings; 3-a rotor; 31-a blade; 32-a through hole; 4 end cover plate, 41 visual window;
1' -a housing; 11' -Vent hole.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 and 2 show an air-cooled housing 1' of a motor in the prior art air compressor industry. Casing 1 'has ventilation hole 11', and the rotor has the blade, drives the rotor blade when the motor rotates, and the inside high temperature air of motor flows, flows with outside air through casing ventilation hole 11 'to carry out the motor heat dissipation, this kind of radiating mode can effectively reduce electric motor rotor temperature, nevertheless because the existence in ventilation hole 11', the motor protection level is lower, needs regularly to clear up the inside impurity of motor, increases the manual maintenance cost.
Still have the radiating mode of liquid cooling among the prior art, through set up the coolant liquid in casing inside, inside lets in the coolant liquid, through runner circulation flow, inside heat passes through the stator casing, takes away the heat dissipation by the coolant liquid that flows, and this kind of radiating mode heat-sinking capability is more excellent than the forced air cooling, especially reduces obviously to the stator temperature, but its structure is more complicated, and the rotor is inside because there is not good heat dissipation route, and the rotor temperature is higher.
In order to solve the problem that the heat dissipation effect of the motor of the existing air compressor is poor and the performance of the motor is influenced, the heat dissipation casing is provided in the embodiment.
Example 1
As shown in fig. 3 to 4, the heat dissipating casing 1 provided by the present invention includes a casing 11, a first heat dissipating flow channel 12 and a second heat dissipating flow channel 13, wherein the first heat dissipating flow channel 12 and the second heat dissipating flow channel 13 are formed on an inner sidewall of the casing 11 or integrally formed with the casing inside the sidewall, the first heat dissipating flow channel 12 is provided with a liquid inlet 14 and a liquid outlet 15, the liquid inlet 14 and the liquid outlet 15 are disposed outside the casing for introducing a cooling liquid into the first heat dissipating flow channel, and the cooling liquid in the first heat dissipating flow channel absorbs heat conducted to a wall of the first heat dissipating flow channel (e.g., heat conducted by the stator and the casing to the wall of the first flow channel 12) and flows out of the casing through the liquid outlet to carry the heat to the outside of the casing. The second heat dissipation flow channel 13 is provided with an air inlet 16 and an air outlet 17, the air inlet 16 and the air outlet 17 are arranged on the inner side of the housing and are respectively communicated with the inside of the housing 11, so that the hot air in the housing can flow into the second heat dissipation flow channel 13 through the air inlet 16, transfer heat to the wall of the second heat dissipation flow channel in the second heat dissipation flow channel 12, and then flow back to the housing 11 through the air outlet 17 to form a closed cycle.
Although the first heat dissipation flow channel 12 and the second heat dissipation flow channel 13 use different cooling media, the wall of the first heat dissipation flow channel 12 and the wall of the second heat dissipation flow channel have a heat conduction relationship with the housing 11, so on the one hand, the air flow in the housing transfers heat to the wall of the second heat dissipation flow channel 13 through the second heat dissipation flow channel 13, the wall of the second heat dissipation flow channel 13 transfers heat to the housing, the housing transfers heat to the first flow channel wall 12, the wall of the first flow channel 12 transfers heat to the cooling liquid, and the cooling liquid finally takes the heat out of the housing 11. So, this application can effectively guarantee the radiating efficiency through setting up the radiating channel of two kinds of differences, improves the performance. Meanwhile, an opening structure communicated with the outside is not formed in the shell 11, so that the heat dissipation effect is guaranteed, and meanwhile, the protection grade of the heat dissipation shell 1 can be effectively guaranteed.
Therefore, the first heat dissipation channel 12 is designed as a cold liquid channel, the second heat dissipation channel 13 is designed as an air cooling channel, and the two channels are both in heat conduction relation with the housing 11 to realize two heat dissipation modes of liquid cooling and air cooling, which is more beneficial to heat dissipation of the housing 11. When the heat dissipation structure is applied to a motor, heat generated by the stator 2 and the rotor 3 can be greatly reduced, and the specific first heat dissipation flow channel 12 and the stator 2 form a first thermal coupling relationship mainly based on heat conduction, so that the stator 2 conducts heat to the wall of the first heat dissipation flow channel 12, the heat of the first heat dissipation flow channel 12 is absorbed by cooling liquid, the heat of the wall of the first heat dissipation flow channel 12 comes from the stator 2 and the shell 11, at least part of the heat of the shell 11 comes from the heat conducted to the shell by the wall of the second flow channel 13, and at least part of the heat of the wall of the second heat dissipation flow channel 13 comes from the heat transferred by airflow inside the shell 11 when the airflow flows through the wall of the second flow channel 13. The first heat dissipation flow channel 12 and the stator 2 form a first thermal coupling relationship mainly based on heat conduction; the second heat dissipation channel 13 and the rotor 3 form a second thermal coupling relationship mainly for convective heat exchange (taking the air flow in the housing 11 as a heat exchange carrier). The heat dissipation casing can realize heat exchange through different heat dissipation media, and the first heat dissipation flow channel 12 and the second heat dissipation flow channel 13 are not affected with each other, so that the heat dissipation operation of the heat dissipation casing 1 can be better performed.
In the related technology, taking a screw compressor structure as an example, the motor rotor 3 is connected to the compressor rotor 3, the temperature of the compressor rotor 3 is high, the high-power-density motor uses rare earth permanent magnets, eddy current loss exists, after the two are superposed, the temperature of the rotor 3 is obviously raised, and the problem of motor service life is easily caused due to the lack of a heat dissipation way of the rotor 3. It is worth noting that, the mode of combining air cooling circulation heat dissipation and liquid cooling circulation heat dissipation is adopted, and compared with independent air cooling circulation heat dissipation and independent liquid cooling circulation heat dissipation, the heat dissipation efficiency can be effectively improved, the flange at the front end of the motor is assembled with the air compressor, and after the whole air compressor is assembled, the sealing grade reaches IP 65. (IP is an abbreviation for Ingress Protection, seal rating).
In order to exert the advantages of each part, solve the problem of low protection level of the air cooling motor, and simultaneously increase the heat dissipation way of the rotor 3 of the liquid cooling motor, and further reduce the problem of the rotor 3, experiments prove that the temperature of the rotor 3 is reduced by more than 10%, and the problem of poor heat dissipation of the rotor 3 in the liquid cooling process is also solved, and the maximum heat dissipation effect is exerted only by changing the structure of the heat dissipation shell 1 and combining the two cooling ways on the premise of not increasing extra cost.
In a preferred embodiment, as shown in fig. 6, the conducting directions of the media in the first fluid flow channel 12 and the second fluid flow channel 13 are shown, it should be noted that the arrows in the drawing are only the conducting directions of the media in the first fluid flow channel 12 and the second fluid flow channel 13 in this embodiment, and the adjustment may be performed in other environments, and the specific conducting direction is not limited herein.
Further optionally, the second heat dissipation flow channels 13 are arranged between the first heat dissipation flow channels 12 at intervals, specifically, the second heat dissipation flow channels 13 are arranged between the first heat dissipation flow channels 12 at intervals, so that the effect of combining two heat exchange modes can be further improved, and the heat dissipation effect of the housing 11 can be effectively improved.
Further alternatively, the first heat dissipation flow passage 12 includes a plurality of first axial flow passages extending in the axial direction of the housing, the second heat dissipation flow passage 13 includes a plurality of second axial flow passages extending in the axial direction of the housing, and the plurality of first heat dissipation flow channels 12 and the plurality of second heat dissipation flow channels 13 are distributed alternately in the circumferential direction of the case, in such a way, on one hand, the position relationship between the first heat dissipation flow channel 12 and the second heat dissipation flow channel 13 can be reasonably set to ensure the heat dissipation effect, and on the other hand, the second heat dissipation flow channel 13 is an air cooling heat dissipation flow channel, after the heat of the internal installation components of the heat sink housing 1 is transferred to the heat sink housing 1 through the second heat sink flow channel 13, since the first heat sink flow channel 12 is a liquid cooling heat sink flow channel, it can form a circulation flow channel with a cooling liquid supply device arranged outside the housing 11, so that heat on the heat sink casing 1 can be continuously taken away by the circulating cooling liquid.
Further optionally, the first heat dissipation flow path 12 comprises one or more serpentine tubes extending axially back and forth, circumferentially, along the housing, the axial extension of the one or more serpentine tubes forming the first axial flow path. Through setting up the coiled pipe that axial extension formed first axial runner, when can effectively utilize the installation space of casing, can also guarantee the length of first heat dissipation channel's heat dissipation pipeline, guaranteed the radiating effect.
Further alternatively, the first heat dissipation flow channel 12 and the second heat dissipation flow channel are disposed on an inner wall surface of the side wall of the housing or disposed inside the side wall of the housing. The arrangement mode on the inner wall can enable the first heat dissipation flow channel 12 and the second heat dissipation flow channel 13 to be closer to the positions of electrical elements needing heat dissipation inside, the arrangement mode in the wall can avoid excessive processing technologies, and production cost is effectively saved. Further preferably, the first heat dissipation flow channel 12 and the second heat dissipation flow channel 13 may be integrally formed with the housing. The first heat dissipation flow path 12 and the second heat dissipation flow path 13 shown in the drawings of the present embodiment are integrally formed inside the side wall of the housing 11 by the housing 11, and both the first heat dissipation flow path wall 12 and the second heat dissipation flow path wall 13 are constituent parts of the side wall of the housing 11. Further alternatively, the liquid inlet 14 and the liquid outlet 15 are disposed on an outer wall surface of the housing 11, wherein the liquid inlet 14 and the liquid outlet 15 are communicated with a liquid supply device, and a cooling medium is supplied to the first heat dissipation flow channel 12 through the liquid supply device. The liquid inlet 14 is communicated with the liquid inlet end of the first heat dissipation flow channel 12, the liquid outlet 15 is communicated with the liquid outlet end of the first heat dissipation flow channel 12, the cooling liquid is injected into the first heat dissipation flow channel 12 through the liquid inlet 14, and the cooling liquid is led out of the first heat dissipation flow channel 12 through the liquid outlet 15. Specifically, the liquid inlet 14 and the liquid outlet 15 are oppositely arranged along the axial direction of the housing 11, and the first heat dissipation flow channel 12 extends in a serpentine shape, so that the liquid inlet 14 and the liquid outlet 15 are axially opposite to each other, so that the cooling liquid returns to the position opposite to the liquid inlet 14 after passing through the liquid inlet 14 and extending in a serpentine shape, and the heat dissipation area in the first heat dissipation flow channel 12 is ensured. An air inlet 16 and an air outlet 17 are arranged on the inner wall surface of the housing 11, wherein the air inlet 16 and the air outlet 17 are located on the inner wall surface of the housing 11, and the air inlet 16 is communicated with the air outlet 17 through the second heat dissipation flow channel 13, so that the second heat dissipation flow channel 13 realizes air cooling heat exchange. While the heat absorbed by the walls of the second heat dissipation flow channel 13 is carried to the outside of the housing on the one hand by the heat dissipation effect of the housing itself and on the other hand by the coolant.
Preferably, the second heat dissipation channels 13 are circumferentially distributed along the casing 11 and are spaced from the first heat dissipation channels 12, each second heat dissipation channel 13 extends along the axial direction of the casing 11, so that the heat dissipation of the motor is more uniform, the first heat dissipation channels 12 and the second heat dissipation channels 13 are not affected by each other and are respectively provided with an air inlet 16 and an air outlet 17, when the motor runs, high-temperature air inside the casing 11 enters through the air inlet 16, the air outlet 17 flows out, and the temperature of the motor is dissipated to the outside through the casing 11.
In a preferred embodiment, the heat dissipation housing 1 is applied to an electric machine, when the electric machine is operated, the cooling fluid enters the housing flow channel through the fluid inlet 14, flows back and forth in the housing 11 through the first heat dissipation flow channel 12 to take away heat of the electric machine, is discharged from the fluid outlet 15, and circulates to the housing 11 for cooling after being cooled externally.
Further optionally, the number of the first axial flow channels ranges from 6 to 12, preferably, the number of the fluid flow channels may be 6, 8, 10, 12, or the like, and of course, the specific number of the fluid flow channels may be adaptively adjusted according to the actual operating condition of the motor and the size of the heat dissipation housing 1.
In a preferred embodiment, the first heat dissipation flow channel 12 extends in a serpentine shape along the circumferential direction of the housing 11, and specifically, by providing the serpentine first heat dissipation flow channel 12, the heat dissipation area of the first heat dissipation flow channel 12 can be effectively increased, that is, the flow channel is in an axial reciprocating type; the first heat dissipation channels 12 are uniformly distributed in the housing 11, and have a rectangular cross section, and the interior of the housing is filled with a cooling liquid.
It is understood that the cooling fluid may be water, water-ethylene mixture, cooling oil (transformer oil, etc.).
Further optionally, along the axial direction of the casing 11, the value range of the ratio of the sectional area of the first heat dissipation flow channel 12 to the sectional area of the second heat dissipation flow channel 13 is 7: 3-8: 2, the generated heat of the stator and rotor 3 of the motor is calculated, the ratio relation between the two flow channels of the casing is optimized, the first heat dissipation flow channel 12 and the second heat dissipation flow channel 13 in the range can effectively distribute the temperature gradient of the stator and rotor 3, the heat dissipation capacity of the first heat dissipation flow channel 12 and the heat dissipation capacity of the second heat dissipation flow channel 13 are equivalent, the heat dissipation ratio is reasonably distributed, and the temperature difference between the first heat dissipation flow channel 12 and the second heat dissipation flow channel 13 is kept relatively stable.
Example 2
The embodiment also provides a motor; including the heat dissipation casing 1, the heat dissipation casing 1 has any one of the beneficial technical effects of the heat dissipation casing 1, and is not described herein again.
Further optionally, the motor includes an air supply device, the air supply device is disposed in the housing 11, and the air supply device can enable air flow to enter the second heat dissipation flow channel 13 through the air inlet 16 during operation of the air supply device, so as to implement a heat dissipation process of the second heat dissipation flow channel 13.
Further optionally, as shown in fig. 7, the motor further includes a stator 2 and a rotor 3, the rotor 3 is disposed inside the stator 2, and the stator 2 is disposed inside the heat dissipation housing 1. The first heat dissipation channel 12 through the liquid cooling circulation dissipates heat of the stator 2, specifically, heat generated by the stator 2 in the working process is transferred to the heat dissipation case 1 and/or the wall of the first heat dissipation channel 12 in a heat conduction manner, and then the heat is transferred to the outside of the housing 11 by the cooling liquid in the first heat dissipation channel 12, and at this time, the heat exchange between the cooling liquid and the stator is performed by partition wall heat exchange. The second heat dissipation runner 13 firstly makes the rotor 3 exchange heat with the air current in the housing 11 by convection through the rotation of the rotor 3 and the action of the air supply device, the air current absorbing the heat of the rotor enters the second heat dissipation runner 13 under the action of the air supply device and transfers the heat to the wall of the second runner 13 by exchanging heat with the second heat dissipation runner 13 by convection, thus realizing the continuous heat dissipation of the rotor 3 by the air cooling circulation, and making the heat dissipation casing 1 realize the heat dissipation of the stator 2 and the rotor 3 through the first heat dissipation runner 12 and the second heat dissipation runner 13.
The first heat dissipation flow passage 12 and the second heat dissipation flow passage 13 are connected in parallel to dissipate heat, one of the heat dissipation flow passages is a liquid cooling heat dissipation flow passage, and the heat of the stator 2 is mainly transferred out in a heat conduction mode; the other path is an air-cooling heat dissipation flow channel which mainly takes away heat generated inside the rotor 3 in a heat convection mode. Further optionally, a through hole 32 penetrating through the rotor 3 axially is formed inside the rotor 3, the air supply device is a blade 31 disposed at one end or two ends of the rotor 3, in the rotation process of the rotor 3, the blade 31 rotates along with the rotor 3, the rotating blade 31 disturbs the air inside the heat dissipation casing 1, the disturbed air flow enters the second heat dissipation flow channel 13 through the air inlet 16 and flows out from the air outlet 17, the air flowing out from the air outlet 17 enters the rotor 3 through the through hole 32, and the operation is repeated in this way, so that the heat inside the rotor 3 is transferred to the heat dissipation casing 1 through the second heat dissipation flow channel 13, and then is transferred to the first heat dissipation flow channel 12 through the heat dissipation casing, and the first heat dissipation flow channel 12 carries the heat conducted by the wall of the second heat dissipation flow channel 13 and the heat conducted by the stator 2 to the outside of the heat dissipation casing 1 through the cooling liquid.
Fig. 9 and 10 show a schematic structural view of the rotor 3, in which the blades 31 and the through holes 32 are disposed at intervals at both ends of the rotor 3, and the through holes 32 are disposed along the axial direction of the rotor 3 and penetrate the rotor 3.
As shown in fig. 7, which is a schematic structural diagram of the inside of the motor, taking fig. 7 as an example, the air inlet 16 is disposed on the right side of the heat dissipation casing 1 in the direction shown in the drawing, the airflow entering the second heat dissipation flow channel 13 is conducted from the right side to the left side, and after flowing out of the air outlet 17, the airflow is conducted inside the rotor 3 along the left side to the right side of the rotor 3, and then conducted to the air inlet 16, and the above-mentioned steps are repeated in this way to achieve the heat dissipation operation of the second heat dissipation flow channel 13. The design of 3 both ends of rotor has blade 31, and the design has through-hole 32 on 3 iron cores of rotor simultaneously, and when the motor moves, rotor 3 drives blade 31 and rotates for inside air flow speed, and the second heat dissipation runner 13 of heat dissipation casing 1, 3 through-holes 32 of rotor form the forced air cooling circulation, and this heat radiation structure mainly used reduces 3 temperatures of electric motor rotor, compares pure liquid cooling radiating mode, and 3 temperatures of electric motor rotor reduce more than 10%.
It is understood that the rotation direction of the airflow is related to the shape of the blades 31, and the arrangement positions of the air inlet 16 and the air outlet 17 in fig. 7 are only one of the positions of the air inlet 16 and the air outlet 17 in the present invention, that is, the air outlet 17 can be arranged on the right side in fig. 7, and the air inlet 16 can be arranged on the left side in the figure to match the blades 31 with different shapes, so as to match the trend of the airflow disturbed by different blades 31.
Similarly, the directions of the liquid inlet 14 and the liquid outlet 15 are shown in fig. 7 as an example, the liquid inlet 14 is disposed on the right side, and the liquid outlet 15 is disposed on the left side, which is only one of the liquid inlet 14 and the liquid outlet 15, that is, the liquid inlet 14 may be disposed on the left side, and the liquid outlet 15 may be disposed on the right side, while the liquid inlet and outlet direction in the first heat dissipation channel 12 and the air flow direction in the second heat dissipation channel do not have a certain relationship, that is, the positions of the liquid inlet and outlet 15 are not affected by the positions of the air inlet 16 and the air outlet 17, and similarly, the positions of the air inlet 16 and the air outlet 17 are not affected by the positions of the liquid inlet 14 and the liquid outlet 15, so that the adaptive adjustment may be performed according to the actual operating conditions of the heat dissipation housing 1.
Further optionally, as shown in fig. 7 and 8, the windings 22 at two ends of the stator 2 are filled with a heat conducting material 21, specifically, the windings 22 at two ends of the stator 2 are wrapped by the heat conducting material 21, where the heat conducting material 21 is colloid, the colloid has a high heat conductivity coefficient, and the motor windings 22 are further transmitted to the housing through the colloid for heat dissipation.
Specifically, along the axial position of the heat dissipating casing 1, the windings 22 at both ends of the stator 2 are disposed between the air inlet 16 and the air outlet 17, thereby ensuring the air circulation of the second heat dissipating flow path 13.
Further optionally, as shown in fig. 5, the motor further includes end cover plates 4, the end cover plates 4 are located at two ends of the heat dissipation casing 1, and the end cover plates are designed with a visible window 41 for observing the internal condition of the motor.
Example 3
The embodiment also provides an air compressor; the air compressor machine includes the heat dissipation casing that above-mentioned embodiment introduced or the motor that above-mentioned embodiment introduced, consequently has all beneficial technological effects of above-mentioned heat dissipation casing or motor, and the no longer repeated description here.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (15)
1. A heat-dissipating casing (1), comprising:
a housing (11);
be equipped with first heat dissipation runner (12) and second heat dissipation runner (13) on the casing, wherein:
the first heat dissipation flow channel (12) is provided with a liquid inlet (14) and a liquid outlet (15) and is used for introducing cooling liquid into the first heat dissipation flow channel, and the cooling liquid absorbs heat conducted to the wall of the first heat dissipation flow channel in the first heat dissipation flow channel and flows out of the shell through the liquid outlet;
the second heat dissipation flow channel (13) is provided with an air inlet (16) and an air outlet (17), the air inlet (16) and the air outlet (17) are respectively communicated with the inside of the shell (11), so that air flow in the shell (11) can flow into the second heat dissipation flow channel (13) through the air inlet (16), and heat is transferred to the wall of the second heat dissipation flow channel by the air flow in the second heat dissipation flow channel and then flows back into the shell (11) through the air outlet (17);
the first heat dissipation runner wall and the second heat dissipation runner wall are in heat conduction relation with the shell.
2. The heat dissipating chassis (1) of claim 1, wherein the second heat dissipating flow channels (13) are arranged at intervals between the first heat dissipating flow channels (12).
3. The heat dissipation casing (1) according to claim 2, wherein the first heat dissipation flow channel (13) comprises a plurality of first axial flow channels extending along an axial direction of the housing (11), and the second heat dissipation flow channel (13) comprises a plurality of second axial flow channels extending along the axial direction of the housing (11), and the plurality of first axial flow channels and the plurality of second axial flow channels are staggered in a circumferential direction of the housing.
4. A heat sink casing (1) according to claim 3, wherein the first heat sink flow channel (12) comprises one or more coils extending axially back and forth along the housing and circumferentially, the axial extension of one or more of the coils forming the first axial flow channel.
5. The heat dissipation cabinet (1) according to any one of claims 1 to 4, wherein the first heat dissipation flow channel (12) and the second heat dissipation flow channel (13) are provided on or in an inner wall surface of a side wall of the housing integrally formed by the side wall of the housing.
6. The heat dissipating cabinet (1) according to claim 5, wherein the side wall of the housing (11) comprises an outer wall surface and an inner wall surface, and the first heat dissipating flow passage (12) and the second heat dissipating flow passage (13) are located between the outer wall surface and the inner wall surface; the liquid inlet (14) and the liquid outlet (15) are arranged on the outer wall surface of the shell, and the air inlet (16) and the air outlet (17) are arranged on the inner wall surface of the shell.
7. The heat dissipating housing (1) according to claim 6, wherein along the axial direction of the housing (11), the ratio of the cross-sectional area of the first heat dissipating flow channel (12) to the cross-sectional area of the second heat dissipating flow channel (13) has a value range of: 7: 3-8: 2.
8. The heat dissipating cabinet (1) of claim 6, wherein the first heat dissipating flow channel (12) has a rectangular cross section.
9. An electrical machine, characterized in that it comprises a heat-dissipating casing (1) according to any one of claims 1 to 8.
10. The machine according to claim 9, characterized in that it further comprises a stator and a rotor, said stator (2), rotor (3) being arranged inside said heat-dissipating casing (1); the first heat dissipation flow channel (12) and the stator (2) form a first thermal coupling relation mainly based on heat conduction; the second heat dissipation flow channel (12) and the rotor (3) form a second thermal coupling relation mainly based on convection heat exchange.
11. The electric machine of claim 10, characterized in that the electric machine comprises an air supply device arranged in the housing (11), wherein the air supply device is arranged in the housing, and when the air supply device rotates, the air flow in the housing (11) enters the second heat dissipation flow channel (13) through the air inlet (16).
12. The electrical machine according to claim 11, wherein the air supply device comprises a blade (31) disposed at one or both axial ends of the rotor (3), and when the blade (31) is rotated by the rotor (3), the air flow in the housing is made to enter the second heat dissipation channel (13) through the air inlet (16).
13. The electrical machine according to claim 12, wherein the rotor (3) is formed with a through hole (32) extending axially therethrough, and when the rotor (3) rotates the blades (31), the blades (31) disturb the flow of air in the housing so that the air passes through the through hole (32) and enters the second heat dissipation flow channel (13) from the air inlet (16).
14. The motor according to claim 13, characterized in that the stator (2) is wound with windings (22), and the winding positions of the windings (22) at two axial ends of the stator (2) are filled with heat conducting materials (21).
15. Air compressor, characterized in that it comprises a heat-dissipating casing (1) according to any one of claims 1 to 8, or a motor according to any one of claims 9 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210563958.6A CN114785030A (en) | 2022-05-23 | 2022-05-23 | Heat dissipation casing, motor and air compressor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210563958.6A CN114785030A (en) | 2022-05-23 | 2022-05-23 | Heat dissipation casing, motor and air compressor machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114785030A true CN114785030A (en) | 2022-07-22 |
Family
ID=82408198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210563958.6A Pending CN114785030A (en) | 2022-05-23 | 2022-05-23 | Heat dissipation casing, motor and air compressor machine |
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| CN (1) | CN114785030A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115021468A (en) * | 2022-08-08 | 2022-09-06 | 常州市昊升电机股份有限公司 | Hollow shaft motor and working method thereof |
| CN115642743A (en) * | 2022-10-26 | 2023-01-24 | 扬州市华天电机有限公司 | Motor that heat dispersion is good |
| CN116155015A (en) * | 2023-04-21 | 2023-05-23 | 邢台职业技术学院 | New energy automobile generator with waste heat recovery module |
| CN116838610A (en) * | 2023-08-29 | 2023-10-03 | 泉州市中力机电有限公司 | Screw air compressor heat dissipation and heat recovery device |
-
2022
- 2022-05-23 CN CN202210563958.6A patent/CN114785030A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115021468A (en) * | 2022-08-08 | 2022-09-06 | 常州市昊升电机股份有限公司 | Hollow shaft motor and working method thereof |
| CN115021468B (en) * | 2022-08-08 | 2022-10-21 | 常州市昊升电机股份有限公司 | Hollow shaft motor and working method thereof |
| CN115642743A (en) * | 2022-10-26 | 2023-01-24 | 扬州市华天电机有限公司 | Motor that heat dispersion is good |
| CN115642743B (en) * | 2022-10-26 | 2023-09-15 | 扬州市华天电机有限公司 | Motor with good heat dissipation performance |
| CN116155015A (en) * | 2023-04-21 | 2023-05-23 | 邢台职业技术学院 | New energy automobile generator with waste heat recovery module |
| CN116838610A (en) * | 2023-08-29 | 2023-10-03 | 泉州市中力机电有限公司 | Screw air compressor heat dissipation and heat recovery device |
| CN116838610B (en) * | 2023-08-29 | 2023-11-17 | 泉州市中力机电有限公司 | Screw air compressor heat dissipation and heat recovery device |
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