CN208754111U - The inside and outside cooling open motor of double wind paths - Google Patents
The inside and outside cooling open motor of double wind paths Download PDFInfo
- Publication number
- CN208754111U CN208754111U CN201820134913.6U CN201820134913U CN208754111U CN 208754111 U CN208754111 U CN 208754111U CN 201820134913 U CN201820134913 U CN 201820134913U CN 208754111 U CN208754111 U CN 208754111U
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- China
- Prior art keywords
- fan
- motor
- wind path
- casing
- end cap
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- Expired - Fee Related
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Abstract
The utility model proposes the cooling open motors of inside and outside double wind paths, compensate for the prior art and there was only the single wind path in inside, heat dissipation effect is undesirable, and the higher defect of shell temperature, cost is lower, and power density is higher, and volume is smaller.Motor includes: casing, drive end bearing bracket, rear end cap, fan, fan housing, has winding stator core, rotor.Front and rear cover is equipped with ventilation opening, passes in and out for cooling air.When fan propeller rotates, the space between the fan blade and rear end cap of fan generates a negative pressure, and the space between fan blade and fan housing generates a positive air pressure.Negative pressure forces cooling air to enter motor interior by drive end bearing bracket ventilation hole, is flowed out after flowing through the heat source components of motor interior by rear end cap ventilation hole, forms interior wind path and takes away internal heat resource heat.Positive air pressure acts on the wind assembling set that fan housing and rear end cap are formed, and the outer surface of casing is brushed behind cooling air change direction, outer ventilation circuit is formed and takes away casing surface heat.
Description
Technical field
The utility model relates to motor, the specially inside and outside cooling open motor of double wind paths.
Background technique
Motor is used widely in each field of industrial or agricultural, is that most important driving is mechanical.Most motor are
Using air as the ventilated motor of cooling medium, closed and two kinds of open-type is divided into substantially according to the height of degree of protection
Structure type.The advantages of enclosed motor is to can be very good to adapt to the environment such as indoor and outdoor misty rain, dust, but closed type electric
The heat dissipation effect of machine is poor.Open motor is then exactly the opposite, and open motor is only limited using environment indoors, but by
The motor component for generating heat source is directly flowed through in the cooling air of open motor, cooling effect is very good, and motor is not
Only the temperature low service life is long, and power density small in size is big.It is the advantages of based on open motor, greatly electric in addition
Motivation work is indoors in environment, open motor using more and more extensive.But the open-type for producing and using at present
Motor is only located at the single cooling air duct of motor interior, and the cooling air that fan generates only cools motor interior zero
Component, the heat dissipation of motor casing outer surface is poor, and there are the higher shortcoming of casing surface temperature.
Summary of the invention
The invention proposes the cooling open motors of inside and outside double wind paths, compensate for prior art motor casing well
The defect of temperature drift, while the integral heat sink effect of motor is further improved, motor cost is lower, and power density can
Higher with what is done, volume is smaller, is more suitable for indoor use.
The present invention is achieved through the following technical solutions:
The cooling open motors of inside and outside double wind paths of the invention include: motor casing, drive end bearing bracket, rear end cap, fan,
Fan housing has winding stator core, rotor.Wherein rotor is made of shaft and rotor core, and fan is mounted in shaft.Front and back end
Lid is equipped with ventilation opening, passes in and out for cooling air.Casing internal is equipped with several axial supporting ribs, and supporting rib has with motor
Winding stator core outer surface is in close contact, and is both played supporting role, is also together constituted motor with core exterior surface
The air duct of internal wind path, while increasing the heat dissipation area of motor.Fan housing is fixed on rear end cap, is collectively formed with rear end cap
Wind assembling set.
As the motor rotates, fan high speed rotation under the drive of shaft, will be in fan blade and rear end cap ventilation opening
Between generate stronger negative pressure, this negative pressure effect under, drive end bearing bracket ventilation hole just have cooling air be inhaled into it is electronic
In machine inner space, this strand of cooling air flows successively through drive end bearing bracket ventilation opening, has winding iron core under the effect of above-mentioned negative pressure
Winding overhang surface, the air duct of core exterior surface and casing inner surface composition, rear end cap ventilation hole, most enter through fan blade afterwards
Fan housing wind assembling set.Above-mentioned cooling air is first cooling air duct for constituting motor of the present invention by path --- inside is cooling
Wind path.
The cooling air of above-mentioned internal wind path flows through the fan blade, under the fan blade effect of rotation, generate compared with
Strong positive air pressure acts in the wind assembling set that fan housing and rear end cap are constituted, and the positive air pressure of wind assembling set forces this strand of cooling air to change
Direction, the ventilation opening being made up of fan housing opening position internal circular surfaces and rear end cap outer round surface, was brushed with biggish flow velocity
Casing outer surface further carries out secondary cooling to motor, improves the cooling effect of motor.Above-mentioned cooling air passes through
Path is Article 2 cooling air duct --- the external cooling air duct for constituting motor of the present invention.
The beneficial effects of the present invention are compared with traditional wind path structure motor, following significant improvement has been done:
(1) cooling air duct increases to two by one, and cooling effect improves a lot, and effectively reduces motor running temperature
Degree, especially motor casing surface temperature has and reduces by a relatively large margin, increases motor power (output) density, and volume can effectively subtract
It is small.
(2) two wind paths are generated by the same fan inside and outside, and fan efficiency is high, at low cost.
(3) two wind paths are series relationships inside and outside, and composition series connection wind path, simple and reliable for structure, heat dissipation is uniform.
Detailed description of the invention
Fig. 1 the structural representation of present invention；
In Fig. 1: 1- drive end bearing bracket, 2- casing, 3- rotor, 4- have a winding stator core, 5- rear end cap, 6- fan housing, 7- fan,
Wind path outside 8-, the inside 9- wind path.
Specific embodiment
Below in conjunction with Fig. 1 and specific embodiment, invention is further described in detail.
The structure of drive end bearing bracket 1 and rear end cap 5 as shown in Figure 1 is almost the same, axially devises several ventilations
Hole, cooled external air enter motor interior by the ventilation hole of drive end bearing bracket 1, along internal wind path 9, flow through motor interior
After several components for generating heat source, is flowed out by the ventilation hole of rear end cap 5, the heat that motor running generates is taken away.
The internal circular surfaces design of casing 2 as shown in Figure 1 has several inwardly protruded axial supporting ribs, these protrusions
Supporting rib passes through the stator component that interference fit forms motor with the outer round surface for having winding stator core 4.There is wound stator
The internal circular surfaces of the outer round surface of iron core 4 and casing 2 since the presence of supporting rib forms the ventilating duct of several axial directions, this
A little ventilating ducts are one of the important components of internal wind path 9 shown in FIG. 1, and motor running generates a big chunk of heat
It is transmitted to the surface of winding stator core 4 and casing 2, cooling air flows through above-mentioned ventilating duct, and cooling air will directly be blown
The inner circle and brace rod surface and the outer round surface for having winding stator core 4 for stroking casing 4, can take away amount of heat, play
Good heat dissipation effect.
When motor operation, fan 7 as shown in Figure 1 is solid to be rotated in the shaft of rotor 3 with rotor 3, the blade of fan 7
Towards rear end cap 5 and with rear end cap 5, there are gaps appropriate.When fan 7 rotates, will generate in the space in the gap compared with
Strong negative pressure, and blade radial outer rim then generates stronger positive air pressure.
The path of internal wind path 9 forces cooling air by preceding as shown in Figure 1, the negative pressure acts on internal wind path 9
The ventilation hole of end cap 1 flows into motor interior, along internal wind path 9, flows through 1 ventilation hole of drive end bearing bracket, there is winding stator core 4
Winding overhang surface, iron core external diameter surface, the inside diameter surface of casing 2, brace rod surface, finally by 5 ventilation hole stream of rear end cap
Motor interior space out.To take away the heat that most of motor running generates.
The path of external wind path 8 is as shown in Figure 1, the positive air pressure acts on fan housing 6 shown in FIG. 1 and the composition of rear end cap 5
Wind assembling set, be forced out the cooling air of motor interior and change direction by wind assembling set and form external wind path 8, the cooling is empty
Gas brushes the outer round surface in casing 2 along the path direction of external wind path, further takes away the heat for being transmitted to casing 2, into
One step improves the integral heat sink effect of motor.
Claims (6)
- The cooling open motors of double wind paths inside and outside 1., including motor casing, end cap, fan, fan housing, have wound stator iron Core, rotor, it is characterised in that: there are two independent cooling air ducts for the motor tool, and the wind path path is located at electronic The inside of machine casing and casing outer surface, described two cooling air ducts are series winding wind path relationship.
- 2. inside and outside double cooling open motors of wind path as described in claim 1, it is characterised in that: the casing internal is equipped with Several axial supporting ribs, the supporting rib and motor have the close contact of winding stator core outer surface, have both played support Effect, also collectively forms the air duct of the inside wind path of motor, while increasing the heat dissipation area of motor with core exterior surface.
- 3. inside and outside double cooling open motors of wind path as described in claim 1, the end cap are divided into former and later two, respectively position In the head and the tail both ends of motor casing, the front and rear cover is equipped with several ventilation holes.
- 4. inside and outside double cooling open motors of wind path as described in claim 1, the cooling of described two independent cooling air ducts Wind is generated by the fan for being located at tail portion, and the fan is mounted in the shaft of motor rotor and rotor is followed to rotate, described Fan housing is fixed on rear end cap, collectively forms wind assembling set with rear end cap and fan.
- 5. inside and outside double cooling open motors of wind path as described in claim 1, the fan are rotated with motor rotor When, the space between the fan blade and rear end cap of fan generates a negative pressure, forms motor under the effect of this negative pressure Interior wind path, the path of the interior wind path are as follows: cooling air enters motor interior by the drive end bearing bracket ventilation hole, has passed through Winding stator core winding overhang surface, iron core external diameter surface, casing inside diameter surface, cabinet supports muscle surface, finally by rear end Lid ventilation hole flows out motor interior space.
- 6. inside and outside double cooling open motors of wind path as described in claim 1, the fan are rotated with motor rotor When, the space between the fan blade and fan housing of fan generates a positive air pressure, forms motor under the effect of this positive air pressure Outer ventilation circuit, the path of the outer ventilation circuit are as follows: the cooling air of the interior wind path outflow changes via the air compartment that fan shield is formed After flow direction, casing outer surface is flowed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820134913.6U CN208754111U (en) | 2018-01-26 | 2018-01-26 | The inside and outside cooling open motor of double wind paths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820134913.6U CN208754111U (en) | 2018-01-26 | 2018-01-26 | The inside and outside cooling open motor of double wind paths |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208754111U true CN208754111U (en) | 2019-04-16 |
Family
ID=66050530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820134913.6U Expired - Fee Related CN208754111U (en) | 2018-01-26 | 2018-01-26 | The inside and outside cooling open motor of double wind paths |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208754111U (en) |
-
2018
- 2018-01-26 CN CN201820134913.6U patent/CN208754111U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190416 Termination date: 20210126 |