CN118508680B - A permanent magnet synchronous motor with optimized heat dissipation effect - Google Patents
A permanent magnet synchronous motor with optimized heat dissipation effect Download PDFInfo
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- CN118508680B CN118508680B CN202410954007.0A CN202410954007A CN118508680B CN 118508680 B CN118508680 B CN 118508680B CN 202410954007 A CN202410954007 A CN 202410954007A CN 118508680 B CN118508680 B CN 118508680B
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 136
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 32
- 230000000694 effects Effects 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 94
- 238000001816 cooling Methods 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000110 cooling liquid Substances 0.000 claims description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 210000004379 membrane Anatomy 0.000 description 70
- 239000007789 gas Substances 0.000 description 19
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 210000002469 basement membrane Anatomy 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 or the like Chemical compound 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Classifications
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- 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
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
本发明涉及电机相关技术领域，公开了一种优化散热效果的永磁同步电机，包括外壳、定子、转子和缠绕于定子上的线组，定子设置在外壳内，转子在定子中转动，正压泵、负压泵和间歇闭合装置，外壳包括内筒和外筒，外筒套于内筒，内筒和外筒之间形成水冷散热间隙，水冷散热间隙中设置弹性热交换膜和散热片，散热片连接于内筒的外壁，相邻两散热片之间设置弹性热交换膜，内筒侧壁开设散热开孔，弹性热交换膜固定于内筒上并将散热开孔包裹，水冷散热间隙具有进液口和出液口，正压泵与间歇闭合装置连通并连接水冷散热间隙的进液口，弹性热交换膜膨胀或收缩以吸收或排出外壳内腔的气体，直接对电机内部的高温气体吸取出来并进行快速的热交换。
The invention relates to the technical field related to motors, and discloses a permanent magnet synchronous motor with optimized heat dissipation effect, comprising a shell, a stator, a rotor and a wire group wound on the stator, wherein the stator is arranged in the shell, the rotor rotates in the stator, a positive pressure pump, a negative pressure pump and an intermittent closing device, the shell comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved in the inner cylinder, a water cooling heat dissipation gap is formed between the inner cylinder and the outer cylinder, an elastic heat exchange membrane and a heat sink are arranged in the water cooling heat dissipation gap, the heat sink is connected to the outer wall of the inner cylinder, an elastic heat exchange membrane is arranged between two adjacent heat sinks, a heat dissipation opening is arranged on the side wall of the inner cylinder, the elastic heat exchange membrane is fixed on the inner cylinder and wraps the heat dissipation opening, the water cooling heat dissipation gap has a liquid inlet and a liquid outlet, the positive pressure pump is connected to the intermittent closing device and connected to the liquid inlet of the water cooling heat dissipation gap, the elastic heat exchange membrane expands or contracts to absorb or discharge the gas in the inner cavity of the shell, directly absorbs the high-temperature gas inside the motor and performs rapid heat exchange.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a permanent magnet synchronous motor with optimized heat dissipation effect.
Background
The permanent magnet synchronous motor uses permanent magnets to provide excitation, does not need excitation current and excitation loss, improves the efficiency and power density of the motor, and comprises a stator, a rotor, an end cover and other parts, wherein the stator is basically the same as a common induction motor, adopts a lamination structure to reduce the loss of the motor during operation, can be made into a solid rotor, can be laminated by lamination, can adopt concentrated whole-distance windings, and can also adopt distributed short-distance windings and unconventional windings.
The permanent magnet synchronous motor can generate heat in the operation process, the heat needs to be dissipated, the existing motor heat dissipation scheme is usually water cooling and air cooling, the volume occupation of air cooling equipment is large, the heat dissipation effect is poor, the noise is large, the dust resistance is poor, and the water cooling heat dissipation cost is high. The existing water cooling heat dissipation can not quickly cool high-temperature gas in the motor, so that high-temperature aggregation points are easy to exist in the motor, and under long-term working conditions, the motor can generate thermal attenuation due to long-time existence of local high temperature.
Accordingly, the present invention provides a permanent magnet synchronous motor with optimized heat dissipation effect to achieve the purpose of higher practical value.
Disclosure of Invention
The invention provides a permanent magnet synchronous motor with optimized heat dissipation effect, which is used for overcoming the defects in the prior art.
The invention discloses a permanent magnet synchronous motor with optimized heat dissipation effect, which is realized by the following specific technical means:
The permanent magnet synchronous motor comprises a shell, a stator, a rotor and a wire set wound on the stator, wherein the stator is arranged in the shell, the rotor rotates in the stator, the permanent magnet synchronous motor further comprises a positive pressure pump, a negative pressure pump and an intermittent closing device, the shell comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved on the inner cylinder, a water cooling heat dissipation gap is formed between the inner cylinder and the outer cylinder, an elastic heat exchange membrane and radiating fins are arranged in the water cooling heat dissipation gap, the radiating fins are connected to the outer wall of the inner cylinder, the radiating fins are arranged at intervals on the periphery of the axis of the inner cylinder, an elastic heat exchange membrane is arranged between two adjacent radiating fins, radiating holes are formed in the side wall of the inner cylinder, the elastic heat exchange membrane is fixed on the inner cylinder and wraps the radiating holes, the water cooling heat dissipation gap is provided with a liquid inlet and a liquid outlet, the positive pressure pump is communicated with the intermittent closing device and is connected with the liquid inlet of the water cooling heat dissipation gap, the negative pressure pump is communicated with the liquid outlet through a pipeline, the intermittent closing device is intermittently closed or opened so that cooling liquid in the water cooling heat dissipation gap is intermittently discharged outwards through the liquid outlet, and the elastic heat exchange membrane is expanded or contracted so as to absorb or discharge gas in the inner cavity of the shell.
According to a further technical scheme, the radiating fins are elastic plates which are bent for many times, a bent radiating space is formed between two adjacent radiating fins, and the elastic heat exchange film is arranged in the bent radiating space in a shape following manner; or, the radiating fin is a sheet body protruding outwards along the radial direction of the inner cylinder.
According to a further technical scheme, the elastic heat exchange membrane is two superposed elastic membranes, an air cavity for containing air is arranged between the two elastic membranes, the air cavity is communicated with the heat dissipation open holes, and heat dissipation protruding points are distributed on the outer surface of the elastic membrane at intervals.
Further technical scheme, elasticity heat exchange membrane itself includes basal lamina, heat conduction layer and waterproof layer, and the basal lamina sets up in the centre, and the heat conduction layer pastes on the two sides of basal lamina, and the waterproof layer bonds at the heat conduction layer, and the heat conduction layer adopts graphene powder spraying technology to make.
Further technical scheme is that after the elastic heat exchange membrane is unfolded, the elastic heat exchange membrane is rectangular, connecting strips and flow guide boxes are respectively arranged at two ends of the elastic heat exchange membrane, the inner wall of the inner barrel is inwards concave to form a first mounting groove, the heat dissipation opening is located at the bottom surface of the first mounting groove, the flow guide is conducted and clamped in the first mounting groove, the inner wall surface of the outer barrel is inwards concave to form a second mounting groove, and the connecting strips are clamped in the second mounting groove.
Further technical scheme, the heat dissipation stick is connected in the heat dissipation trompil, and a plurality of heat dissipation micropores are offered to heat dissipation stick self, and elasticity heat exchange membrane parcel is in the heat dissipation stick.
According to the technical scheme, the first end cover is arranged at one end of the outer cylinder, an annular positive pressure cavity facing the water cooling heat dissipation gap is arranged in the first end cover, a liquid inlet is formed in the positive pressure cavity, an intermittent closing device is arranged in the positive pressure cavity, and cooling liquid impacts the intermittent closing device through the liquid inlet to intermittently close the intermittent closing device.
Further technical scheme, intermittent type closing device includes movable ring core, annular valve body and elasticity reset piece, and annular valve body connects in the lateral wall in malleation chamber, and annular valve body has the switching channel of intercommunication water-cooling heat dissipation clearance and inlet, and movable ring core sets up between annular valve body and inlet, and movable ring core overlaps on annular valve body and slides on annular valve body in order to shutoff or open the inlet opening of switching channel, and elasticity reset piece sets up between movable ring core and annular valve body.
Further technical scheme, intermittent type closing device still includes having elastic annular membrane, sets up annular membrane between the lateral wall of movable ring core and malleation chamber, and annular membrane connects in movable ring core, and annular membrane is the toper, and the bellied big mouth deviates from the inlet.
Further technical scheme still includes external radiator, and external radiator is including heating panel, fan and the honeycomb duct that the interval set up, and it has the runner to distribute in the heating panel, and the fan is installed in the heating panel, and the honeycomb duct is connected heating panel and PMSM.
Compared with the prior art, the invention has the following beneficial effects:
According to the permanent magnet synchronous motor with optimized heat dissipation effect, the intermittent closing device, the elastic heat exchange membrane and the heat dissipation opening are arranged, when the intermittent closing device is closed, the positive pressure pump cannot pump liquid into the water-cooling heat dissipation gap, but the negative pressure pump can still discharge cooling liquid remained in the water-cooling heat dissipation gap, at the moment, high-temperature gas in the permanent magnet synchronous motor enters the elastic heat exchange membrane through the heat dissipation opening, the elastic heat exchange membrane expands, the occupied space in the water-cooling heat dissipation gap is larger, the high-temperature gas rapidly exchanges heat with cooling liquid through the elastic heat exchange membrane, when the intermittent closing device is opened again, the positive pressure pump recovers the pumping action, the cooling liquid is pumped into the water-cooling heat dissipation gap again, the liquid in the water-cooling heat dissipation gap is increased, the volume of the elastic heat exchange membrane is reduced to recover to the initial size, and the cooled gas in the elastic heat exchange membrane is re-injected into the permanent magnet synchronous motor, so that a completed breathing heat dissipation action is formed.
In the permanent magnet synchronous motor for optimizing the heat dissipation effect, the elastic heat exchange membrane and the radiating fins are arranged, the positive pressure pump and the negative pressure pump are simultaneously started to push the cooling liquid to flow in the water-cooling heat dissipation gap, the cooling liquid takes away the heat on the radiating fins and the elastic heat exchange membrane, and as a large number of radiating fins are distributed in the water-cooling heat dissipation gap, the contact surface of the radiating fins with the cooling liquid is large, and the heat dissipation effect is good.
The permanent magnet synchronous motor with optimized heat dissipation effect can directly absorb high-temperature gas in the motor and conduct rapid heat exchange, in the heat dissipation process, no existing fan structure is adopted, no high-speed or high-power mechanical action is designed to participate, the whole silencing effect is good, the space occupied by the heat dissipation structure in the motor is saved, the integration level is high, the miniaturization of the permanent magnet synchronous motor is facilitated, in addition, the gas in the motor is in a sealed state, stable inert gas can be filled in the motor to serve as protective gas of a protective circuit, the gas is always in an internal circulation state, and the risk of invasion of external dust can be greatly reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of the structure of the inner and outer drums of the present invention;
FIG. 4 is a front view of FIG. 3;
FIG. 5 is a schematic view of the structure at A in FIG. 4;
FIG. 6 is a schematic view of the structure of the elastic heat exchange membrane 18 of the present invention when it is stretched;
FIG. 7 is a schematic view showing the constitution of an elastic heat exchange membrane 18 of the present invention;
FIG. 8 is a schematic view of the structure of the first end cap 38 of the present invention;
Fig. 9 is an enlarged schematic view of the structure of the intermittent closure device 14 of the present invention;
FIG. 10 is a cross-sectional view of the invention at the intermittent closure device 14;
fig. 11 is a schematic structural view of a heat dissipating rod 39 according to the present invention.
Reference numerals illustrate:
10 outer shell, 11 stator, 12 rotor, 13 line group, 14 intermittent closing device, 15 inner cylinder, 16 outer cylinder, 17 water cooling heat dissipation gap, 18 elastic heat exchange membrane, 19 radiating fin, 20 radiating opening, 21 liquid inlet, 23 radiating space, 24 suture line, 25 base film, 26 heat conduction layer, 27 waterproof layer, 28 connecting strip, 29 flow guiding box, 31 positive pressure cavity, 32 movable ring core, 33 annular valve body, 34 elastic reset piece, 35 switching channel, 36 liquid inlet opening, 37 annular membrane, 38 first end cover, 39 radiating rod.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
As shown in fig. 1 to 7:
One embodiment of a permanent magnet synchronous motor for optimizing heat dissipation effect is shown in fig. 1, and comprises a shell 10, a stator 11, a rotor 12 and a wire group 13 wound on the stator 11, wherein the stator 11 is arranged in the shell 10, the rotor 12 rotates in the stator 11, the permanent magnet synchronous motor further comprises a positive pressure pump, a negative pressure pump and an intermittent closing device 14, as shown in fig. 3, the shell 10 comprises an inner cylinder 15 and an outer cylinder 16, the outer cylinder 16 is sleeved on the inner cylinder 15, a water cooling heat dissipation gap 17 is formed between the inner cylinder 15 and the outer cylinder 16, as shown in fig. 5, an elastic heat exchange membrane 18 and a heat dissipation sheet 19 are arranged in the water cooling heat dissipation gap 17, the heat dissipation sheet 19 is connected to the outer wall of the inner cylinder 15, the heat dissipation sheet 19 is arranged at intervals around the axis of the inner cylinder 15, an elastic heat exchange membrane 18 is arranged between two adjacent heat dissipation sheets 19, the side wall of the inner cylinder 15 is provided with a heat dissipation opening 20, the elastic heat exchange membrane 18 is fixed on the inner cylinder 15 and wraps the heat dissipation opening 20, the water cooling heat dissipation gap 17 is provided with a liquid inlet 21 and a liquid outlet, the positive pressure pump is communicated with the closing device 14 and is connected with the liquid inlet 21 of the water cooling gap 17, and the negative pressure pump is communicated with the liquid inlet 19 through the liquid inlet 19, and the intermittent heat dissipation gap 17, and the negative pressure pump is communicated with the intermittent heat pump through the liquid outlet, and the intermittent heat dissipation gap is discharged by the intermittent heat dissipation gap 17 or the intermittent heat dissipation gap is discharged by the intermittent heat exchange membrane through the intermittent heat exchange device or the liquid heat exchange membrane or the air through the intermittent heat exchange heat dissipation gap 10, and the heat exchange device is discharged by the heat or the heat air is discharged by intermittent heat air through the air and outdoor heat between the air and outdoor.
In this embodiment, the heat dissipation process is: the positive pressure pump and the negative pressure pump are simultaneously started to push the cooling liquid to flow in the water-cooling heat dissipation gap 17, the cooling liquid takes away the heat on the cooling fins 19 and the elastic heat exchange membrane 18, and as a large number of cooling fins 19 are distributed in the water-cooling heat dissipation gap 17, the contact surface of the cooling fins 19 on the cooling liquid is large, and the heat dissipation effect is good.
When the intermittent closing device 14 is closed, the positive pressure pump cannot pump liquid into the water cooling heat dissipation gap 17, but the negative pressure pump can still discharge the residual cooling liquid in the water cooling heat dissipation gap 17, at this time, high-temperature gas in the permanent magnet synchronous motor enters the elastic heat exchange membrane 18 through the heat dissipation opening 20, the elastic heat exchange membrane 18 expands, the occupied space in the water cooling heat dissipation gap 17 is larger, and the high-temperature gas rapidly exchanges heat with the cooling liquid through the elastic heat exchange membrane 18.
When the intermittent closing device 14 is opened again, the positive pressure pump resumes the pumping action, the cooling liquid is pumped into the water-cooling heat dissipation gap 17 again, the liquid in the water-cooling heat dissipation gap 17 increases, the volume of the elastic heat exchange membrane 18 decreases to restore to the original size, and the cooled gas in the elastic heat exchange membrane 18 is reinjected into the permanent magnet synchronous motor to form a completed breathing heat dissipation action.
By adopting the breathing type heat dissipation scheme, high-temperature gas in the motor can be directly absorbed and subjected to rapid heat exchange, and in the heat dissipation process, no high-speed or high-power mechanical action is designed to participate because the existing fan structure is not adopted, the overall silencing effect is good, the space occupied by the heat dissipation structure in the motor is saved, the integration level is high, and the miniaturization of the permanent magnet synchronous motor is facilitated; in addition, the gas in the motor is in a sealed state, and can be filled with stable inert gas as the protective gas of the protective circuit, and the gas is always in an internal circulation state, so that the risk of invasion of external dust can be greatly reduced.
Preferably, as shown in fig. 5, the heat dissipation fins 19 are elastic plates bent multiple times, a curved heat dissipation space 23 is formed between two adjacent heat dissipation fins 19, and the elastic heat exchange membrane 18 is arranged in the curved heat dissipation space 23 in a shape following the shape.
In particular, as shown in fig. 5, the cross section of the elastic plate is W-shaped, the elastic heat exchange membrane 18 abuts against the surface of the W-shaped elastic plate, and the curved heat dissipation space 23 defines the shape of the elastic heat exchange membrane 18, so that the elastic heat exchange membrane 18 forms a W-shape, to increase the contact area between the elastic plate and the elastic heat exchange membrane 18 and the cooling liquid, and to improve the heat dissipation efficiency.
As a simple alternative to the above, the fins 19 may also be irregular plates that are curved around the inner tube 15, also having the effect of increasing the heat dissipation area.
In other embodiments of the present application, the cooling fin 19 is provided with a plurality of fine holes, and the cooling liquid can flow through the fine holes.
In other embodiments of the present application, as shown in fig. 11, the fins 19 are sheet bodies protruding outward in the radial direction of the inner tube 15.
Preferably, the elastic heat exchange membrane 18 is two laminated elastic membranes, an air cavity for containing air is arranged between the two elastic membranes, the air cavity is communicated with the heat dissipation opening 20, and heat dissipation protruding points are distributed on the outer surface of the elastic membranes at intervals.
Further, the peripheries of the two laminated elastic films are sealed and bonded, and as shown in fig. 6, the two laminated elastic films are connected by a discontinuous suture 24, so that the volume of the two expanded elastic films is limited, and the two laminated elastic films are more easily adapted to a narrow space.
In this embodiment, the heat dissipation bump protrudes from the surface of the elastic film to increase the specific surface area of the elastic film. After the elastic membrane is inflated, gas can enter the heat dissipation convex points to exchange heat.
Preferably, as shown in fig. 7, the elastic heat exchange membrane 18 includes a base membrane 25, a heat conducting layer 26 and a waterproof layer 27, the base membrane 25 is arranged in the middle, the heat conducting layer 26 is adhered to two sides of the base membrane 25, the waterproof layer 27 is adhered to the heat conducting layer 26, the heat conducting layer 26 is made of graphene powder by spraying, and the heat conducting performance of the graphene material is good.
Preferably, as shown in fig. 6, the elastic heat exchange membrane 18 is rectangular after being unfolded, two ends of the elastic heat exchange membrane 18 are respectively provided with a connecting strip 28 and a diversion box 29, the outer wall of the inner cylinder 15 is concaved inwards to form a first mounting groove, the heat dissipation opening 20 is positioned at the bottom surface of the first mounting groove, the diversion box 29 is clamped in the first mounting groove, air in the motor can enter a gap between the two elastic heat exchange membranes 18 through the heat dissipation opening 20 and the diversion box 29, the inner wall surface of the outer cylinder 16 is concaved inwards to form a second mounting groove, and the connecting strip 28 is clamped in the second mounting groove.
In other embodiments of the present application, as shown in fig. 11, the heat dissipation holes 29 are connected to the heat dissipation bars 39, the heat dissipation bars 39 are provided with a plurality of heat dissipation holes, and the elastic heat exchange membrane 18 is wrapped around the heat dissipation bars 39. The heat dissipation rod 39 is made of a metal having good thermal conductivity, such as aluminum, copper, or the like, or aluminum oxide ceramic, or the like.
In this embodiment, with the periodic expansion or contraction of the elastic heat exchange membrane 18, the gas continuously flows back and forth in the heat dissipation openings 20, and the gas continuously passes through the heat dissipation rod 39 in the flowing process, since the heat dissipation rod 39 has a plurality of heat dissipation pores, the specific surface area is large, the heating rate of the heat dissipation plate is high, and the heat can be quickly transferred out.
Preferably, the motor further comprises an external radiator, the external radiator comprises a radiating plate, a fan and a flow guide pipe, the radiating plate, the fan and the flow guide pipe are arranged at intervals, flow channels are distributed in the radiating plate, the fan is arranged on the radiating plate, and the flow guide pipe connects the radiating plate with the permanent magnet synchronous motor.
In this embodiment, the external radiator is added to further improve the heat dissipation effect, the negative pressure pump discharges the heated cooling liquid into the heat dissipation plate through the flow guide pipe, the fan is utilized to dissipate the heat of the cooling liquid in the heat dissipation plate, and the cooling liquid after being steadily lowered flows back to the permanent magnet synchronous motor through the flow guide pipe to complete heat dissipation.
Examples
8-10, A first end cover 38 is installed at one end of the outer cylinder 16, a second end cover is arranged at the other end of the outer cylinder, an annular negative pressure cavity facing the water cooling gap 17 is formed in the second end cover, a liquid outlet is formed in the negative pressure cavity, an annular positive pressure cavity 31 facing the water cooling gap 17 is formed in the first end cover 38, a liquid inlet 21 is formed in the positive pressure cavity 31, an intermittent closing device 14 is arranged in the positive pressure cavity 31, and cooling liquid impacts the intermittent closing device 14 through the liquid inlet 21 to intermittently close the intermittent closing device 14.
Preferably, the intermittent closing device 14 includes a movable ring core 32, an annular valve body 33 and an elastic restoring member 34, in this embodiment, the elastic restoring member 34 is a spring, in other embodiments, the elastic restoring member 34 may also be an elastic ball, a rubber spring, etc., the annular valve body 33 is connected to a side wall of the positive pressure cavity 31, the annular valve body 33 has a switching channel 35 communicating the water cooling heat dissipation gap 17 and the liquid inlet 21, the movable ring core 32 is disposed between the annular valve body 33 and the liquid inlet 21, the movable ring core 32 is sleeved on the annular valve body 33 and slides on the annular valve body 33 to block or open the liquid inlet opening 36 of the switching channel 35, and the elastic restoring member 34 is disposed between the movable ring core 32 and the annular valve body 33.
In this embodiment, the annular valve body 33 has a groove with an opening facing the movable annular core 32, the bottom of the groove has a slot communicating with the water cooling gap 17, the movable annular core 32 has a groove facing the annular valve body 33, the two grooves are disposed opposite to each other, the groove of the movable annular core 32 is sleeved outside the groove of the annular valve body 33, the groove side wall of the movable annular core 32 is provided with a liquid inlet groove, in an initial state, the movable annular core 32 is far away from the annular valve body 33, cooling liquid can enter the groove through the liquid inlet groove and flow into the water cooling gap 17 through the slot, when the movable annular core 32 slides towards the annular valve body 33 and presses the elastic reset piece 34, the movable annular core 32 eventually blocks the opening of the groove on the annular valve body 33, thereby closing the intermittent closing device 14.
Preferably, the intermittent closing device 14 further includes an elastic annular membrane 37, the annular membrane 37 is disposed between the movable annular core 32 and the side wall of the positive pressure cavity 31, and the annular membrane 37 is connected to the movable annular core 32, the annular membrane 37 is conical, and the conical large opening is away from the liquid inlet 21, the cooling liquid impacts the conical annular membrane 37, and under a certain pressure, the conical annular membrane 37 deforms to open a gap between the annular membrane 37 and the side wall of the positive pressure cavity 31.
In this embodiment, the intermittent closing device 14 works as follows:
In the initial state, the switching channel 35 of the annular valve body 33 is not blocked by the movable ring core 32, the cooling liquid can enter the water cooling heat dissipation gap 17 through the liquid inlet 21 and the switching channel 35, the positive pressure pump is started, the cooling liquid impacts the movable ring core 32, the movable ring core 32 is subjected to liquid pressure and slides on the annular valve body 33 to squeeze the elastic reset piece 34, until the movable ring core 32 completely blocks the switching channel 35, the intermittent closing device 14 temporarily closes the channel of the positive pressure pump, at the moment, the liquid in the water cooling heat dissipation gap 17 is reduced, and the elastic heat exchange membrane 18 expands.
As the positive pressure pump continues to operate, the cooling liquid pushes the conical annular membrane 37, the annular membrane 37 elastically deforms itself, the annular membrane 37 is separated from the side wall of the positive pressure cavity 31 to form a gap for liquid flow, the cooling liquid enters the water cooling heat dissipation gap 17 through the gap to shrink the elastic heat exchange membrane 18, after a certain time, the pressures in the water cooling heat dissipation gap 17 and the positive pressure cavity 31 are balanced, the annular membrane 37 is reset, and the elastic reset piece 34 pushes the movable ring core 32 to reset to restart the switching channel 35. Thereby realizing the function of an automatic gap switch.
The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. The utility model provides an optimize radiating effect's PMSM, includes shell, stator, rotor and twine in line group on the stator, the stator sets up in the shell, the rotor rotates its characterized in that in the stator: the permanent magnet synchronous motor further comprises a positive pressure pump, a negative pressure pump and an intermittent closing device, the shell comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved on the inner cylinder, a water cooling heat dissipation gap is formed between the inner cylinder and the outer cylinder, an elastic heat exchange membrane and radiating fins are arranged in the water cooling heat dissipation gap, the radiating fins are connected to the outer wall of the inner cylinder, the radiating fins are arranged at intervals along the axis circumference of the inner cylinder, the elastic heat exchange membrane is arranged between two adjacent radiating fins, the side wall of the inner cylinder is provided with radiating holes, the elastic heat exchange membrane is fixed on the inner cylinder and wraps the radiating holes, the water cooling heat dissipation gap is provided with a liquid inlet and a liquid outlet, the positive pressure pump is communicated with the intermittent closing device and is connected with the liquid inlet of the water cooling heat dissipation gap, the negative pressure pump is intermittently closed or opened by a pipeline so that cooling liquid in the water cooling heat dissipation gap is outwards discharged through the liquid outlet, the elastic heat exchange membrane is expanded or contracted to absorb or discharge gas in the inner cavity of the shell, the elastic heat exchange membrane is bent along with the radiating fins, and the elastic heat exchange membrane is bent into a plurality of bending space between the two adjacent radiating fins; or, the fin is followed radial outside convex lamellar body of inner tube, the elasticity heat exchange membrane is two superimposed elastic membrane, two have between the elastic membrane hold gaseous air cavity, the air cavity with the heat dissipation trompil intercommunication, the surface interval distribution of elastic membrane has the heat dissipation bump, elasticity heat exchange membrane itself includes base film, heat conduction layer and waterproof layer, the base film sets up in the centre, the heat conduction layer is pasted the two sides of base film, the waterproof layer bonds the heat conduction layer, the heat conduction layer adopts graphene powder spraying technology to make, be the rectangle after the elasticity heat exchange membrane is expanded, just the both ends of elasticity heat exchange membrane set up connecting strip and water conservancy diversion box respectively, the outer wall indent of inner tube becomes first mounting groove, the heat dissipation trompil is located the bottom surface of first mounting groove, the water conservancy diversion box card is in the first mounting groove, the inner wall indent of urceolus forms the second mounting groove, the connecting strip card in the second mounting groove.
2. The permanent magnet synchronous motor for optimizing heat dissipation according to claim 1, wherein: the heat dissipation opening is connected with a heat dissipation rod, a plurality of heat dissipation pores are formed in the heat dissipation rod, and the elastic heat exchange membrane is wrapped on the heat dissipation rod.
3. The permanent magnet synchronous motor for optimizing heat dissipation according to claim 1, wherein: the cooling device comprises an outer cylinder, a first end cover, a liquid inlet, an intermittent closing device, a cooling liquid inlet, a water cooling heat dissipation gap, a liquid inlet and a cooling liquid inlet, wherein the first end cover is arranged at one end of the outer cylinder, an annular positive pressure cavity facing the water cooling heat dissipation gap is arranged in the first end cover, the liquid inlet is arranged in the positive pressure cavity, the intermittent closing device is impacted by the cooling liquid through the liquid inlet, and the intermittent closing device is closed intermittently.
4. A permanent magnet synchronous motor for optimizing heat dissipation according to claim 3, wherein: the intermittent closing device comprises a movable ring core, an annular valve body and an elastic resetting piece, wherein the annular valve body is connected to the side wall of the positive pressure cavity, the annular valve body is provided with a switching channel which is communicated with the water cooling heat dissipation gap and the liquid inlet, the movable ring core is arranged between the annular valve body and the liquid inlet, the movable ring core is sleeved on the annular valve body and slides on the annular valve body to block or open the liquid inlet opening of the switching channel, and the elastic resetting piece is arranged between the movable ring core and the annular valve body.
5. The permanent magnet synchronous motor for optimizing heat dissipation according to claim 4, wherein: the intermittent closing device further comprises an elastic annular membrane, the annular membrane is arranged between the movable annular core and the side wall of the positive pressure cavity, the annular membrane is connected with the movable annular core, the annular membrane is conical, and a conical large opening is away from the liquid inlet.
6. The permanent magnet synchronous motor for optimizing heat dissipation according to claim 1, wherein: the heat exchanger comprises a permanent magnet synchronous motor, and is characterized by further comprising an external radiator, wherein the external radiator comprises a heat dissipation plate, a fan and a flow guide pipe which are arranged at intervals, flow channels are distributed in the heat dissipation plate, the fan is mounted on the heat dissipation plate, and the flow guide pipe is used for connecting the heat dissipation plate with the permanent magnet synchronous motor.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116827006A (en) * | 2023-05-24 | 2023-09-29 | 贵州电网有限责任公司 | Built-in permanent magnet synchronous motor control structure |
| CN117439339A (en) * | 2023-12-13 | 2024-01-23 | 苏州万力肯动力科技有限公司 | Permanent magnet synchronous motor control system and application method thereof |
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| CN201374628Y (en) * | 2009-03-19 | 2009-12-30 | 包头天山电机有限公司 | Three-phase water-cooling permanent magnet synchronous motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116827006A (en) * | 2023-05-24 | 2023-09-29 | 贵州电网有限责任公司 | Built-in permanent magnet synchronous motor control structure |
| CN117439339A (en) * | 2023-12-13 | 2024-01-23 | 苏州万力肯动力科技有限公司 | Permanent magnet synchronous motor control system and application method thereof |
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