CN213279421U - Motor utilizing high-pressure air for refrigeration and cooling - Google Patents
Motor utilizing high-pressure air for refrigeration and cooling Download PDFInfo
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- CN213279421U CN213279421U CN202022225491.3U CN202022225491U CN213279421U CN 213279421 U CN213279421 U CN 213279421U CN 202022225491 U CN202022225491 U CN 202022225491U CN 213279421 U CN213279421 U CN 213279421U
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Abstract
The utility model relates to a motor utilizing high-pressure air to refrigerate and cool, which comprises an air compressor, wherein an impeller is arranged at the air inlet of the air compressor, a temperature and pressure reduction component is connected at the outlet of the air compressor, and the output end of the temperature and pressure reduction component is communicated into the air compressor; the cooling and pressure reducing assembly comprises a heat exchanger arranged at an air inlet of the air compressor and an expansion impeller arranged in the air compressor, and an outlet of the air compressor, the heat exchanger and the expansion impeller are communicated through a cooling pipe group. The utility model discloses a coaxial setting of inflation impeller and motor shaft makes the direct feedback motor of inflation power of inflation impeller, and to the air compressor machine, work efficiency is higher. The temperature of air entering a cooling runner in the motor can be far lower than the ambient temperature, and the cooling effect of the whole motor, especially a rotating shaft of the motor, is far better than that of common air cooling and water cooling; the better cooling effect can promote the heat load and the power density of motor greatly, reduces the motor cost, realizes the miniaturization of motor and whole air compressor machine.
Description
Technical Field
The utility model belongs to the technical field of the motor cooling technique and specifically relates to an utilize high-pressure air refrigeration cooling's motor.
Background
The high-speed air compressor has high efficiency, small volume and low maintenance cost, and has wide application, such as fuel cell automobiles, paper making industry, sewage treatment and the like. However, the power of the existing high-rotating-speed air compressor is generally not very large, the main reason of the high-rotating-speed air compressor is that along with the increase of the rotating speed and the power, the motor has the problems of high heating and difficult heat dissipation, particularly, a motor rotor has high heating density and small heat dissipation area, and if the heat dissipation is insufficient and the temperature is too high, the demagnetization risk exists, and the reliability and the service life of the motor are seriously influenced.
At present there are several kinds of modes such as air cooling, empty water-cooling, liquid cooling, evaporation cold to the cooling method of motor mainly, and these several kinds of cooling methods all have the difficulty that can't overcome when using on the motor of high power density, high thermal load:
air cooling, air-air cooling and air-water cooling are all used for driving air to flow in the motor to achieve the purpose of cooling the motor, a direct cooling medium is normal-temperature air, and the density and specific heat capacity of the air are low, so that the cooling capacity is limited, and the power density and the heat load of the motor are difficult to be improved to a high level;
the liquid cooling has strong cooling capacity, but the cooling liquid can only lead to a motor stator, the liquid feeding to a motor rotor is difficult, the equipment is complex, the cost is high, at present, the liquid can be fed to the motor rotor only on a large motor (above megawatt), the motor rotor is cooled by air when the liquid cooling is applied to a small and medium motor, and the liquid cooling is also limited in further improving the heat load and the power density of the motor due to the limitation of the heat dissipation capacity of the motor rotor;
evaporation cold is similar with the liquid cooling, and evaporation cold cooling capacity is strong, nevertheless still hardly promotes the cooling capacity to electric motor rotor, and evaporation cold is high to the airtight requirement of motor moreover, and the auxiliary assembly is many, and is with high costs, does not have obvious competitive advantage on large-scale application.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defects in the prior art and provides the motor which is reasonable in structure and utilizes high-pressure air for refrigeration and cooling, so that smooth and efficient refrigeration of the air compressor is realized on the premise of simple structure.
The utility model discloses the technical scheme who adopts as follows:
a motor utilizing high-pressure air for refrigeration cooling comprises an air compressor, wherein an impeller is arranged at an air inlet of the air compressor, a temperature and pressure reducing component is connected to an outlet of the air compressor, and an output end of the temperature and pressure reducing component is communicated back into the air compressor;
the cooling and pressure reducing assembly comprises a heat exchanger arranged at an air inlet of the air compressor and an expansion impeller arranged in the air compressor, and an outlet of the air compressor, the heat exchanger and the expansion impeller are communicated through a cooling pipe group.
As a further improvement of the above technical solution:
the air compressor comprises a base, a motor stator core is installed in the base, a motor winding is wound on the motor stator core, a motor rotating shaft is arranged on a central axis of the base, the impeller and the expansion impeller are installed at two ends of the motor rotating shaft respectively, and low-temperature fluid output by the cooling pipe group flows through the motor winding, the motor rotating shaft and the motor stator core.
The impeller and the expansion impeller are coaxially arranged.
The cooling runner is arranged in the machine base and comprises a runner main body and a runner outlet, wherein the runner main body is communicated with the expansion impeller, the motor stator core, the motor winding and the motor rotating shaft, and the runner outlet is communicated with the runner main body and extends out of the machine base.
The cooling tube bank includes:
the bypass pipeline is used for accommodating high-pressure gas output by the air compressor and communicated to the heat exchanger;
and the cooling pipeline is connected between the heat exchanger and the expansion impeller.
And the bypass pipeline is communicated with an outlet pipeline of the air compressor.
The heat exchanger is an air-air heat exchanger or an air-water heat exchanger.
The utility model has the advantages as follows:
the utility model discloses a coaxial setting of inflation impeller and motor shaft makes the direct feedback motor of inflation power of inflation impeller, and to the air compressor machine, work efficiency is higher.
The temperature of air entering a cooling runner in the motor can be far lower than the ambient temperature, and the cooling effect of the whole motor, especially a rotating shaft of the motor, is far better than that of common air cooling and water cooling;
the better cooling effect can greatly improve the heat load and the power density of the motor, reduce the cost of the motor and realize the miniaturization of the motor and the whole air compressor;
the utility model discloses compact structure to change to the motor is little, and is with low costs, and the reliability is high.
Drawings
Fig. 1 is a schematic view of the overall structure of the motor of the present invention.
Fig. 2 is a cross-sectional view of the motor and the cooling and pressure reducing assembly of the present invention.
Wherein: 1. an air compressor; 2. an impeller; 3. a temperature and pressure reduction component; 4. a cooling tube bank; 5. a cooling flow channel;
301. a heat exchanger; 302. an expansion impeller;
101. a machine base; 102. a motor shaft; 103. a motor winding; 104. a motor stator core;
401. a bypass conduit; 402. a cooling duct;
501. a flow channel main body; 502. and (4) a flow channel outlet.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-2, the motor using high-pressure air for cooling in this embodiment includes an air compressor 1, an impeller 2 is disposed at an air inlet of the air compressor 1, an outlet of the air compressor 1 is connected to a cooling and depressurizing assembly 3, and an output end of the cooling and depressurizing assembly 3 is communicated back to the air compressor 1;
the cooling and pressure reducing assembly 3 comprises a heat exchanger 301 arranged at an air inlet of the air compressor 1 and an expansion impeller 302 arranged in the air compressor 1, and an outlet of the air compressor 1, the heat exchanger 301 and the expansion impeller 302 are communicated through a cooling pipe group 4.
The air compressor 1 comprises a base 101, a motor stator core 104 is installed in the base 101, a motor winding 103 is wound on the motor stator core 104, a motor rotating shaft 102 is arranged on a central axis of the base 101, the impeller 2 and the expansion impeller 302 are respectively installed at two ends of the motor rotating shaft 102, and low-temperature fluid output by the cooling pipe group 4 flows through the motor winding 103, the motor rotating shaft 102 and the motor stator core 104.
The impeller 2 and the expansion impeller 302 are coaxially arranged.
The cryogenic fluid can be introduced into the motor for supercooling at any suitable position, and is led out of the motor at any suitable position, and in the embodiment, the adopted specific structure is as follows: a cooling flow channel 5 is arranged in the base 101, and the cooling flow channel 5 includes a flow channel main body 501 communicated with the expansion impeller 302, the motor stator core 104, the motor winding 103 and the motor rotating shaft 102, and a flow channel outlet 502 communicated with the flow channel main body 501 and extending to the outside of the base 101.
The runner outlet 502 and the expansion impeller 302 are respectively located at two axial ends of the motor stator core 104.
The heat exchanger 301 is installed at the air inlet of the air compressor 1.
The cooling tube group 4 includes:
the bypass pipeline 401 is used for leading out high-pressure gas output by the air compressor 1 and communicated to the heat exchanger 301;
a cooling pipe 402 is connected between the heat exchanger 301 and the expansion impeller 302.
The outlet pipeline of the air compressor 1 of the bypass pipeline 401 is communicated.
The heat exchanger 301 is an air-air heat exchanger or an air-water heat exchanger.
The method for refrigerating by using high-pressure air of the embodiment applies the motor for refrigerating and cooling by using high-pressure air, and the refrigerating process comprises the following steps: starting the air compressor 1, allowing normal temperature air or an external cold source to enter the air compressor 1 through the heat exchanger 301, and allowing the air compressor 1 to run to form high-temperature and high-pressure gas; high-temperature and high-pressure gas output by the air compressor 1 enters the heat exchanger 301 through the bypass pipeline 401, the high-temperature and high-pressure gas output by the air compressor 1 is cooled into normal-temperature and high-pressure gas, and an external air path of the heat exchanger 301 comes from an air inlet of the air compressor 1; normal-temperature high-pressure gas is conveyed to the expansion impeller 302 in the air compressor 1 through the cooling pipeline 402, and works on the expansion impeller 302 to become low-temperature low-pressure air; the low-temperature and low-pressure air flows in the cooling flow channel 5 in the air compressor 1, flows through the motor stator core 104 and the motor rotating shaft 102, cools the interior of the air compressor 1, and is output from the flow channel outlet 502 on the side wall of the air compressor 1.
The specific structure and the working principle of the embodiment are as follows:
one end of the air compressor 1 is in a volute shape, the other end of the air compressor 1 is in a cylindrical main body, and the shell of the air compressor 1 is a base 101; a motor stator core 104 is arranged in the base 101, a motor winding 103 is wound on the motor stator core 104, and a motor rotating shaft 102 is arranged on a central axis of the base 101. In the operation process of the air compressor 1, the motor shaft 102, the motor winding 103 and the motor stator core 104 mainly generate heat, and the purpose of the embodiment is to cool the motor shaft 102, the motor winding 103 and the motor stator core 104.
In the base 101 of the air compressor 1, the motor shaft 102 is used as a reference, the two ends of the motor shaft 102 are provided with the impellers 2 and the expansion impellers 302, and the impellers 2 are positioned at the air inlet of the air compressor 1 and are coaxial with the air inlet.
The concrete structure of cooling includes cooling and depressurizing module 3, and cooling pipe group 4 communicating cooling and depressurizing module 3 with air compressor 1.
High-temperature high-pressure gas is output from the outlet of the air compressor 1, and the high-temperature high-pressure gas is input into the cooling and pressure reducing component 3, is processed by the cooling and pressure reducing component 3 to become low-temperature low-pressure gas and is input into the air compressor 1 for cooling.
The cooling and pressure reducing assembly 3 comprises a heat exchanger 301 and an expansion impeller 302, the cooling tube group 4 comprises a bypass pipeline 401 and a cooling pipeline 402, and in the embodiment, the heat exchanger 301 is an air-air heat exchanger 301 or an air-water heat exchanger 301; the bypass pipeline 401 is connected to the position where the air compressor 1 outputs high-temperature and high-pressure gas, and as a further setting, the position where the high-temperature and high-pressure gas is output may be an outlet pipeline of the air compressor 1, may also be located at a volute of the air compressor 1, and may also be located at a diffuser of the air compressor 1, and the purpose of the position is to convey the high-temperature and high-pressure gas to the heat exchanger 301 for heat exchange.
The specific connection structure of the cooling and pressure reducing component 3 and the cooling pipe group 4 is as follows: the output end of the air compressor 1 is communicated with a bypass pipeline 401, one end of the bypass pipeline 401, which is far away from the air compressor 1, is communicated with a heat exchanger 301, one output end of the heat exchanger 301 is connected with a cooling pipeline 402, and one end of the cooling pipeline 402, which is far away from the heat exchanger 301, is led back to the tail part of the base 101 of the air compressor 1; an external air path of the heat exchanger 301 is from the air flow at the air inlet of the air compressor 1, the expansion impeller 302 is arranged at the tail part of the base 101, and the low-temperature and low-pressure gas obtained after the treatment of the expansion impeller 302 flows in the cooling flow channel 5 in the air compressor 1 to cool the motor rotating shaft 102, the motor winding 103 and the motor stator iron core 104.
The cryogenic fluid can be introduced into the motor for supercooling at any suitable position, and is led out of the motor at any suitable position, and the embodiment adopts the following specific scheme: the cooling flow channel 5 in the machine base 101 comprises a flow channel main body 501, the flow channel main body 501 starts from the expansion impeller 302 and has an expanded annular narrow diameter, the flow channel main body 501 widens at the motor winding 103, and a flow channel outlet 502 located on the machine base 101 is formed at one end of the motor winding 103, which is away from the expansion impeller 302.
The utility model discloses a direct setting utilizes the refrigerated cooling structure of highly-compressed air on air compressor machine 1, this structure can also be used on the motor that other types of operation generated heat for the air temperature that gets into in the motor cooling runner 5 can be far less than ambient temperature, and to whole motor, especially motor shaft 102's cooling effect is far better than ordinary forced air cooling, water-cooling.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (7)
1. The utility model provides an utilize high-pressure air refrigeration refrigerated motor, includes air compressor machine (1), and air compressor machine (1) air inlet department is equipped with impeller (2), its characterized in that: the outlet of the air compressor (1) is connected with a cooling and pressure reducing assembly (3), and the output end of the cooling and pressure reducing assembly (3) is communicated with the air return compressor (1);
the cooling and pressure reducing assembly (3) comprises a heat exchanger (301) arranged at an air inlet of the air compressor (1) and an expansion impeller (302) arranged in the air compressor (1), and an outlet of the air compressor (1), the heat exchanger (301) and the expansion impeller (302) are communicated through a cooling pipe group (4).
2. The electric machine cooled by high-pressure air refrigeration of claim 1, wherein: air compressor machine (1) is including frame (101), installation motor stator core (104) in frame (101), and it has motor winding (103) to wind on motor stator core (104), and frame (101) center axis is arranged in motor shaft (102), install respectively in motor shaft (102) both ends impeller (2) and expansion impeller (302), and the cryogenic fluid of cooling tube group (4) output flows through motor winding (103), motor shaft (102) and motor stator core (104).
3. An electric machine cooled with high-pressure air refrigeration according to claim 2, characterized in that the impeller (2) and the expansion impeller (302) are arranged coaxially.
4. The electric machine cooled by high-pressure air refrigeration of claim 2, wherein: the cooling device is characterized in that a cooling flow channel (5) is arranged in the base (101), and the cooling flow channel (5) comprises a flow channel main body (501) communicated with the expansion impeller (302), the motor stator core (104), the motor rotating shaft (102) and the motor winding (103) and a flow channel outlet (502) communicated with the flow channel main body (501) and extending out of the base (101).
5. The electric machine cooled by high-pressure air refrigeration of claim 1, wherein: the cooling tube bank (4) comprises:
the bypass pipeline (401) is used for leading out high-pressure gas output by the air compressor (1) and communicated to the heat exchanger (301);
and a cooling pipe (402) connected between the heat exchanger (301) and the expansion impeller (302).
6. The electric machine cooled by high-pressure air refrigeration of claim 5, wherein: and the bypass pipeline (401) is communicated with an outlet pipeline of the air compressor (1).
7. The electric machine cooled by high-pressure air refrigeration of claim 1, wherein: the heat exchanger (301) is an air-air heat exchanger or an air-water heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022225491.3U CN213279421U (en) | 2020-09-30 | 2020-09-30 | Motor utilizing high-pressure air for refrigeration and cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022225491.3U CN213279421U (en) | 2020-09-30 | 2020-09-30 | Motor utilizing high-pressure air for refrigeration and cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213279421U true CN213279421U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022225491.3U Active CN213279421U (en) | 2020-09-30 | 2020-09-30 | Motor utilizing high-pressure air for refrigeration and cooling |
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| Country | Link |
|---|---|
| CN (1) | CN213279421U (en) |
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2020
- 2020-09-30 CN CN202022225491.3U patent/CN213279421U/en active Active
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