CN216056691U - Low-loss motor for refrigeration compressor - Google Patents
Low-loss motor for refrigeration compressor Download PDFInfo
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- CN216056691U CN216056691U CN202122547706.8U CN202122547706U CN216056691U CN 216056691 U CN216056691 U CN 216056691U CN 202122547706 U CN202122547706 U CN 202122547706U CN 216056691 U CN216056691 U CN 216056691U
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Abstract
The utility model discloses a low-loss motor for a refrigeration compressor, which comprises a shell, wherein a rotating shaft is arranged at the central axis position of the shell, a rotor is sleeved on the rotating shaft, a stator is sleeved outside the rotor, a first end cover and a second end cover are respectively arranged at two ends of the shell, and a compressed air inlet communicated with compressed air for refrigeration of the compressor is arranged on the second end cover; the rotor is provided with a plurality of heat dissipation holes, end rings are arranged at two ends of the rotor, and a plurality of fan blades are arranged on the outer end faces of the end rings; the shell is in a cylindrical shape and comprises an inner shell and an outer shell, a cavity between the inner shell and the outer shell is a cooling cavity, one end of the inner shell is provided with a first air inlet, the other end of the inner shell is provided with a second air inlet, and an air outlet is formed in the circumferential surface of the outer shell. The low-loss motor for the refrigeration compressor disclosed by the utility model realizes effective heat dissipation of the motor through internal and external air cooling circulation, reduces the loss of the motor, improves the reliability of the motor and prolongs the service life of the motor.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a low-loss motor for a refrigeration compressor.
Background
A refrigeration compressor is a driven fluid machine for raising low-pressure gas into high-pressure gas, and is a heart of a refrigeration system. With the rapid development of the compressor industry, compressor performance and cost become key factors for product competitiveness. In the compressor, the motor is a core component for completing energy conversion, and is also a key for realizing conversion between mechanical energy and electric energy.
The loss of the motor comprises copper loss, iron loss, stray loss and the like, wherein the copper loss and most of the iron loss are positioned on the stator side, and the loss is changed into heat to cause the temperature of the motor to rise, so that the reliability and the service life of the motor are influenced. The motor heat dissipation that current compressor was used is poor, lacks refrigerating plant or refrigerating plant is perfect inadequately, and the temperature rose when the motor was run for a long time, and the heat is difficult for effluvium in the motor for heat accumulation in the motor aggravates the motor loss, is influencing motor reliability and life, probably leads to the motor to burn when serious.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the defects, the utility model aims to provide the low-loss motor for the refrigeration compressor, which directly acts refrigeration compressed air in the motor, realizes effective heat dissipation of the motor through internal and external air cooling circulation, reduces the loss of the motor, improves the reliability of the motor and prolongs the service life of the motor.
The technical scheme is as follows: a low-loss motor for a refrigeration compressor comprises a shell, a rotating shaft, a rotor, a stator, a first end cover and a second end cover, wherein the rotating shaft is arranged at the central axis position of the shell, the rotor is sleeved on the rotating shaft, the stator is sleeved outside the rotor, the first end cover and the second end cover are respectively arranged at two ends of the shell, the first end cover is close to the connecting end of the compressor, a compressed air inlet communicated with compressed air for refrigeration of the compressor is arranged on the second end cover, the compressed air is adopted for direct refrigeration, the refrigeration effect is good, an additional air supply device is not needed, and the cost is saved; a plurality of heat dissipation holes are formed in the outer side of the rotor central rotating shaft hole, end rings are arranged at two ends of the rotor central rotating shaft hole, and a plurality of fan blades integrally formed with the end rings are arranged on the outer end faces of the end rings; the casing is the tube-shape, including inlayer casing and outer casing, the cavity is the cooling chamber between inlayer casing and the outer casing, just the one end that inlayer casing is close to the second end cover is equipped with first air intake, and the one end that is close to first end cover is equipped with the second air intake, be equipped with the air outlet on the outer casing circumference. When the motor works, refrigerating compressed air enters the motor from a compressed air inlet, under the action of the fan blade close to the second end cover, one part of the refrigerating compressed air enters the heat dissipation holes and the mounting gap of the stator and the rotor to realize heat and cold exchange with the stator and the rotor, then enters the cavity close to the first end cover, enters the second air inlet under the action of the fan blade close to the first end cover, and enters the cooling cavity to form internal circulation; the other part of the refrigeration compressed air enters the first air inlet and enters the cooling cavity, the refrigeration compressed air is uniformly distributed in the cooling cavity, the refrigeration compressed air and the stator outside realize cold and heat exchange, then the refrigeration compressed air is discharged through the air outlet to form external circulation, the motor realizes effective heat dissipation of the motor through the internal circulation and the external circulation, the loss of the motor is reduced, the reliability of the motor is improved, and the service life of the motor is prolonged.
Furthermore, in the low-loss motor for the refrigeration compressor, the cooling cavity is internally provided with a plurality of axially distributed heat dissipation partition plates, the adjacent heat dissipation partition plates are arranged in a staggered manner from head to tail to divide the cooling cavity into the cooling air duct extending in a zigzag manner, the first air inlet and the second air inlet are arranged on the circumferential surface of the inner shell in a staggered manner and are arranged at staggered positions of the heat dissipation partition plates, so that refrigeration compressed air is distributed more uniformly, and the heat dissipation effect is improved.
Further, in the low-loss motor for the refrigeration compressor, 12 heat dissipation partition plates are arranged and are uniformly distributed along the circumference of the central axis of the cooling cavity. The number of the heat dissipation partition plates can be 16, 18 and the like, and the number of the heat dissipation partition plates can be changed appropriately according to the outer diameter of the stator.
Furthermore, in the low-loss motor for the refrigeration compressor, the rotating shaft is the rotating shaft shared by the compressor, so that the power loss of the connection of the rotating shaft is reduced, the transmission efficiency is improved, and the structure of the compressor is more compact.
Furthermore, in the low-loss motor for the refrigeration compressor, the first end cover is connected with the compressor through the flange plate, and the sealing gasket is arranged between the first end cover and the connecting surface of the flange plate, so that the leakage of compressed air is reduced, and the heat dissipation effect is improved.
Further, in the low-loss motor for the refrigeration compressor, the stator is provided with the winding set, and the periphery of the winding set is provided with the resin insulating paint layer. The outer layer of the cured resin insulating paint layer can further protect the composite enameled wire; the friction between composite enameled wires caused by electromagnetic alternation in the running process of the motor is avoided, and the heat dissipation of the motor is facilitated.
Further, in the low-loss motor for the refrigeration compressor, the winding set is provided with the current thermosensitive type midpoint protector. When the motor operates abnormally, the current thermosensitive midpoint protector automatically acts to cut off the power supply of the motor, so that the motor is protected.
The technical scheme shows that the utility model has the following beneficial effects: the low-loss motor for the refrigeration compressor adopts compressed air for direct refrigeration, has good refrigeration effect and does not need to adopt an additional air supply device, thereby saving the cost; and the effective heat dissipation of the motor is realized through the internal and external air cooling circulation, the loss of the motor is reduced, the reliability of the motor is improved, and the service life of the motor is prolonged.
Drawings
Fig. 1 is a schematic view of the internal structure of a low loss motor for a refrigeration compressor according to the present invention;
fig. 2 is a schematic view of the partially expanded distribution of the heat dissipation partition of the low-loss motor for a refrigeration compressor according to the present invention;
in the figure: the air-cooling fan comprises a shell 1, an inner shell 11, an outer shell 12, a cooling cavity 13, a heat dissipation partition 14, a rotating shaft 2, a rotor 3, heat dissipation holes 31, an end ring 32, fan blades 33, a stator 4, a first end cover 5, a flange 51, a sealing gasket 52, a second end cover 6, a compressed air inlet 7, a first air inlet 8, a second air inlet 9 and an air outlet 10.
Detailed Description
The utility model is further elucidated with reference to the drawings and the embodiments.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
As shown in fig. 1-2, the low-loss motor for a refrigeration compressor according to the present invention includes a housing 1, a rotating shaft 2, a rotor 3, a stator 4, a first end cap 5, and a second end cap 6, wherein the rotating shaft 2 is disposed at a central axis position of the housing 1, the rotor 3 is sleeved on the rotating shaft 2, the stator 4 is sleeved outside the rotor 3, the first end cap 5 and the second end cap 6 are respectively disposed at two ends of the housing 1, the first end cap 1 is close to a compressor connection end, the second end cap 6 is provided with a compressed air inlet 7 communicated with compressed air for compressor refrigeration, compressed air is adopted to directly refrigerate, the refrigeration effect is good, and no additional air supply device is required, so as to save cost; a plurality of heat dissipation holes 31 are formed in the outer side of a central rotating shaft hole of the rotor 3, end rings 32 are arranged at two ends of the central rotating shaft hole, and a plurality of fan blades 33 integrally formed with the end rings 32 are arranged on the outer end faces of the end rings 32; casing 1 is the tube-shape, including inlayer casing 11 and outer casing 12, the cavity is cooling chamber 13 between inlayer casing 11 and the outer casing 12, be equipped with 12 axially distributed's heat dissipation baffle 14 in the cooling chamber 13, heat dissipation baffle 14 is along cooling chamber 13 the central axis circumference evenly distributed, and is adjacent heat dissipation baffle 14 staggers from beginning to end sets up, separates cooling chamber 13 into the cooling duct of tortuous extension, just inlayer casing 11 is close to the one end of second end cover 6 and is equipped with first air intake 8, and the one end that is close to first end cover 5 is equipped with second air intake 9, be equipped with air outlet 10 on the outer casing 12 circumference.
Example 2
As shown in fig. 1-2, the low-loss motor for a refrigeration compressor according to the present invention includes a housing 1, a rotating shaft 2, a rotor 3, a stator 4, a first end cap 5, and a second end cap 6, wherein the rotating shaft 2 is disposed at a central axis position of the housing 1, the rotor 3 is sleeved on the rotating shaft 2, the stator 4 is sleeved outside the rotor 3, the first end cap 5 and the second end cap 6 are respectively disposed at two ends of the housing 1, the first end cap 1 is close to a compressor connection end, the second end cap 6 is provided with a compressed air inlet 7 communicated with compressed air for compressor refrigeration, compressed air is adopted to directly refrigerate, the refrigeration effect is good, and no additional air supply device is required, so as to save cost; a plurality of heat dissipation holes 31 are formed in the outer side of a central rotating shaft hole of the rotor 3, end rings 32 are arranged at two ends of the central rotating shaft hole, and a plurality of fan blades 33 integrally formed with the end rings 32 are arranged on the outer end faces of the end rings 32; casing 1 is the tube-shape, including inlayer casing 11 and outer casing 12, the cavity is cooling chamber 13 between inlayer casing 11 and the outer casing 12, be equipped with the heat dissipation baffle 14 of a plurality of axial distributions in the cooling chamber 13, heat dissipation baffle 14 is along cooling chamber 13 the central axis circumference evenly distributed, and is adjacent heat dissipation baffle 14 staggers from beginning to end and sets up, separates cooling chamber 13 into the cooling duct of tortuous extension, just inlayer casing 11 is close to the one end of second end cover 6 and is equipped with first air intake 8, and the one end that is close to first end cover 5 is equipped with second air intake 9, be equipped with air outlet 10 on the outer casing 12 circumference.
The rotating shaft 2 is a rotating shaft shared by the compressor, so that the power loss of the connection of the rotating shaft 2 is reduced, the transmission efficiency is improved, and the structure of the compressor is more compact.
The first end cover 5 is connected with the compressor through a flange plate 51, and a sealing gasket 52 is arranged between the connecting surface of the first end cover 5 and the flange plate 51, so that the leakage of compressed air is reduced, and the heat dissipation effect is improved.
And a winding group is arranged on the stator 4, and a resin insulating paint layer is arranged on the periphery of the winding group. And the winding set is also provided with a current thermosensitive midpoint protector.
The working principle of the low-loss motor for the refrigeration compressor is as follows: when the air conditioner works, refrigerating compressed air enters the motor from the compressed air inlet 7, under the action of the fan blade 33 close to the second end cover 6, one part of the refrigerating compressed air enters the heat dissipation holes 31 and the mounting gap of the stator 4 and the rotor 4 to realize heat and cold exchange with the stator 4 and the rotor 3, then enters the cavity close to the first end cover 5, enters the second air inlet 9 under the action of the fan blade 33 close to the first end cover 5, enters the cooling cavity 13, and forms internal circulation; the other part of the refrigeration compressed air enters the first air inlet 8, enters the cooling cavity 13, is uniformly distributed in the cooling air channel extending along the zigzag, realizes cold and heat exchange with the outer side of the stator 4, is discharged through the air outlet 10 to form external circulation, realizes effective heat dissipation of the motor through internal and external air cooling circulation, reduces the loss of the motor, improves the reliability of the motor and prolongs the service life of the motor.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (7)
1. A low loss motor for a refrigeration compressor, characterized by: the air conditioner comprises a shell (1), a rotating shaft (2), a rotor (3), a stator (4), a first end cover (5) and a second end cover (6), wherein the rotating shaft (2) is arranged at the central axis position of the shell (1), the rotor (3) is sleeved on the rotating shaft (2), the stator (4) is sleeved outside the rotor (3), the first end cover (5) and the second end cover (6) are respectively arranged at the two ends of the shell (1), the first end cover (5) is close to the connecting end of a compressor, and a compressed air inlet (7) communicated with compressed air for refrigerating the compressor is arranged on the second end cover (6); a plurality of heat dissipation holes (31) are formed in the outer side of a central rotating shaft hole of the rotor (3), end rings (32) are arranged at two ends of the central rotating shaft hole, and a plurality of fan blades (33) which are integrally formed with the end rings (32) are arranged on the outer end faces of the end rings (32); casing (1) is the tube-shape, including inlayer casing (11) and outer casing (12), the cavity is cooling chamber (13) between inlayer casing (11) and outer casing (12), just inlayer casing (11) are close to the one end of second end cover (6) and are equipped with first air intake (8), and the one end that is close to first end cover (5) is equipped with second air intake (9), be equipped with air outlet (10) on outer casing (12) periphery.
2. A low loss electric machine for a refrigeration compressor according to claim 1, wherein: be equipped with a plurality of axially distributed's heat dissipation baffle (14) in cooling chamber (13), it is adjacent the head and the tail setting of staggering of heat dissipation baffle (14) separates into zigzag extension's cooling air duct with cooling chamber (13).
3. A low loss motor for a refrigerant compressor as set forth in claim 2, wherein: the number of the heat dissipation partition plates (14) is 12, and the heat dissipation partition plates are uniformly distributed along the circumference of the central axis of the cooling cavity (13).
4. A low loss electric machine for a refrigeration compressor according to claim 1, wherein: the rotating shaft (2) is a rotating shaft shared with the compressor.
5. A low loss electric machine for a refrigeration compressor according to claim 1, wherein: the first end cover (5) is connected with the compressor through a flange plate (51), and a sealing gasket (52) is arranged between the connecting surface of the first end cover (5) and the flange plate (51).
6. A low loss electric machine for a refrigeration compressor according to claim 1, wherein: and a winding group is arranged on the stator (4), and a resin insulating paint layer is arranged on the periphery of the winding group.
7. A low loss motor for a refrigerant compressor as set forth in claim 6, wherein: and the winding set is also provided with a current thermosensitive midpoint protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547706.8U CN216056691U (en) | 2021-10-22 | 2021-10-22 | Low-loss motor for refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547706.8U CN216056691U (en) | 2021-10-22 | 2021-10-22 | Low-loss motor for refrigeration compressor |
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| Publication Number | Publication Date |
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| CN216056691U true CN216056691U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122547706.8U Active CN216056691U (en) | 2021-10-22 | 2021-10-22 | Low-loss motor for refrigeration compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116436212A (en) * | 2023-06-09 | 2023-07-14 | 山西电机制造有限公司 | Motor with axial and radial mixed ventilation iron core |
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2021
- 2021-10-22 CN CN202122547706.8U patent/CN216056691U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116436212A (en) * | 2023-06-09 | 2023-07-14 | 山西电机制造有限公司 | Motor with axial and radial mixed ventilation iron core |
| CN116436212B (en) * | 2023-06-09 | 2023-08-29 | 山西电机制造有限公司 | Motor with axial and radial mixed ventilation iron core |
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