CN216812051U - Outer rotor compressor and refrigeration plant - Google Patents
Outer rotor compressor and refrigeration plant Download PDFInfo
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- CN216812051U CN216812051U CN202220404553.3U CN202220404553U CN216812051U CN 216812051 U CN216812051 U CN 216812051U CN 202220404553 U CN202220404553 U CN 202220404553U CN 216812051 U CN216812051 U CN 216812051U
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Abstract
The utility model relates to the technical field of compressors and provides an outer rotor compressor and refrigeration equipment. The stator is sleeved on the stator mounting sleeve, and the stator can be fixed on the stator mounting sleeve through various fixing mounting modes, so that the mounting stability of the stator can be effectively ensured, and the working reliability of the outer rotor compressor can be effectively improved; in addition, the stator mounting sleeve is sleeved outside the bearing and is in clearance fit with the bearing, so that the influence of the stator mounting on the bearing can be avoided, and the working stability of the outer rotor compressor can be effectively improved.
Description
Technical Field
The utility model relates to the technical field of compressors, and particularly provides an outer rotor compressor and refrigeration equipment.
Background
Conventional motors can be divided into an inner rotor motor and an outer rotor motor according to their structures. The outer rotor motor has the advantages of strong starting capability, high energy efficiency, low material cost and the like due to the adoption of the structure with an external rotor, so that the outer rotor motor is concerned by more and more compressor manufacturers.
For the compressor adopting the external rotor motor, the stator of the external rotor motor is sleeved on the bearing of the crankcase and is fixedly connected with the bearing. At present, the fixed connection mode of a stator and a bearing is an interference fit connection mode and a welding mode, and for the interference fit connection mode, the stator is generally sleeved on the bearing in a cold pressing mode, in the process, a shaft hole of the bearing is deformed due to pressure, so that a crankshaft of a compressor can be greatly abraded when rotating in the shaft hole, and the working stability of the compressor is reduced; for the welding mode, the crankcase is generally made of cast iron, namely the bearing is also made of cast iron, the iron core of the stator is generally made of silicon steel, the welding performance between the cast iron and the silicon steel is poor, and the risk of falling of the stator exists, so that the working reliability of the compressor is reduced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide an outer rotor compressor and refrigeration equipment, and aims to solve the technical problems that the stator of the conventional outer rotor compressor is poor in installation stability and the shaft hole of a bearing of the outer rotor compressor is easy to deform.
In order to achieve the purpose, the embodiment of the utility model adopts the technical scheme that: an outer rotor compressor comprising:
the crankcase comprises a shaft seat and a bearing, and the bearing is arranged on the shaft seat;
the stator mounting sleeve is mounted on the shaft seat, is sleeved on the periphery of the bearing and is in clearance fit with the peripheral surface of the bearing;
the outer rotor motor comprises a stator, wherein the stator is sleeved on the stator mounting sleeve, and the stator is fixedly connected with the stator mounting sleeve.
The outer rotor compressor provided by the embodiment of the utility model at least has the following beneficial effects: the stator is sleeved on the stator mounting sleeve, and the stator can be fixed on the stator mounting sleeve in various fixing mounting modes, for example, mutual fixation is realized in an interference fit connection mode, and the stator mounting sleeve is made of the same or similar material as an iron core of the stator and is fixed with the iron core of the stator in a welding mode, so that the mounting stability of the stator can be effectively ensured, and the working reliability of the outer rotor compressor can be effectively improved; simultaneously, through locating the stator installation cover outside the bearing and making stator installation cover and bearing clearance fit, can avoid the installation of stator to produce the extrusion influence to the bearing and lead to the condition that the shaft hole of bearing appears warping like this to above-mentioned external rotor compressor's job stabilization nature has effectively been improved.
In one embodiment, the outer rotor compressor further includes a fastener, the shaft seat has a first connection hole, the stator mounting sleeve has a second connection hole opposite to the first connection hole, and the fastener is inserted into the first connection hole and the second connection hole and fixes the stator mounting sleeve on the shaft seat.
In one embodiment, the outer rotor compressor comprises a plurality of fastening pieces, a plurality of first connecting holes and a plurality of second connecting holes, the fastening pieces, the first connecting holes and the second connecting holes correspond to one another, and the plurality of first connecting holes are uniformly distributed at intervals around the axis of the bearing.
In one embodiment, the first connecting hole is a counter bore, and the second connecting hole is a threaded hole; or the first connecting hole is a threaded hole, and the second connecting hole is a counter bore; the fastener is a bolt, and the bolt penetrates through the counter bore and is connected into the threaded hole.
In one embodiment, the stator mounting sleeve is welded to the shaft seat.
In one embodiment, the stator is an interference fit with the stator mounting sleeve.
In one embodiment, the stator mounting sleeve is made of steel, and the stator is welded with the stator mounting sleeve.
In one embodiment, the peripheral wall of the stator mounting sleeve is provided with a step part, and one side of the stator facing the shaft seat is abutted with the step part.
In one embodiment, the outer circumferential wall of the stator mounting sleeve is provided with a groove, and the groove is communicated with the end face, facing the stator, of the step part.
In order to achieve the above object, an embodiment of the present invention further provides a refrigeration apparatus, including the outer rotor compressor according to any one or more of the above embodiments.
Since the refrigeration equipment adopts the outer rotor compressor of any one of the embodiments, the refrigeration equipment at least has the beneficial effects of the embodiment, and the details are not repeated herein.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an outer rotor compressor according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a stator mounting sleeve in the external rotor compressor shown in fig. 1;
FIG. 3 is a front view of the stator mounting sleeve of FIG. 2;
fig. 4 is a cross-sectional view of the stator mounting sleeve of fig. 3 taken along the direction a-a.
Wherein, in the figures, the respective reference numerals:
100. an outer rotor compressor; 110. a crankcase; 111. a shaft seat; 1111. a first connection hole; 112. a bearing; 120. a stator mounting sleeve; 121. a sleeve; 1211. a step portion; 1212. a groove; 122. a connecting seat; 1221. a second connection hole; 130. an outer rotor motor; 131. a stator; 132. a rotor; 1321. a stator cavity; 140. a fastener; 150. a crankshaft.
Detailed Description
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 "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed 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, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A first aspect of the present invention provides an outer rotor compressor 100, and the outer rotor compressor 100 can be applied to a refrigeration device, wherein the refrigeration device includes, but is not limited to, a refrigerator and an air conditioner.
The outer rotor compressor 100 will be described in detail with reference to the drawings.
First, the axial direction described below refers to the direction in which the crankshaft 150 of the outer rotor compressor 100 extends, and the circumferential direction described below refers to any circumferential direction around the axis of the crankshaft 150 of the outer rotor compressor 100.
Referring to fig. 1, the external rotor compressor 100 includes a crankcase 110, a stator mounting sleeve 120, an external rotor motor 130, and a crankshaft 150, the crankcase 110 includes a shaft seat 111 and a bearing 112, the bearing 112 is disposed on the shaft seat 111, a shaft hole is disposed in a middle portion of the bearing 112, the crankshaft 150 is disposed in the shaft hole, and the crankshaft 150 is rotatable in the shaft hole. The stator mounting sleeve 120 is mounted on the shaft seat 111, the stator mounting sleeve 120 is sleeved on the periphery of the bearing 112, and the stator mounting sleeve 120 is in clearance fit with the outer peripheral surface of the bearing 112. The outer rotor motor 130 includes a stator 131, the stator 131 is sleeved on the stator mounting sleeve 120, and the stator 131 is fixedly connected with the stator mounting sleeve 120.
Specifically, as shown in fig. 1, the external rotor motor 130 further includes a rotor 132, a stator cavity 1321 is disposed in a middle portion of the rotor 132, the stator 131 is disposed in the stator cavity 1321, a winding of the stator 131 and a winding of the rotor 132 generate an electromotive force by mutual inductance, so as to drive the rotor 132 to rotate, and the rotor 132 is fixedly connected to the crankshaft 150, so that the crankshaft 150 can rotate along with the rotor 132.
Optionally, the fixed connection manner of the rotor 132 and the crankshaft 150 includes multiple, and may specifically be a welding manner, an interference fit manner, and the like, and is not limited in particular herein.
It should be noted that the width of the gap between the stator mounting sleeve 120 and the bearing 112 may be set according to actual needs, and optionally, the width of the gap between the stator mounting sleeve 120 and the bearing 112 may range from 0.03mm to 0.08mm, and specifically may be 0.03mm, 0.05mm, 0.08mm, and the like.
The assembly process of the outer rotor compressor 100 described above is as follows:
the stator mounting sleeve 120 is sleeved on the bearing 112, then the stator mounting sleeve 120 is mounted on the shaft seat 111, then the stator 131 is sleeved on the stator mounting sleeve 120, and the stator 131 is fixedly connected with the stator mounting sleeve 120, so that the assembling operation of the stator 131 is completed. The rotor 132 may be mounted to the stator 131 after the stator 131 is assembled, such that the stator 131 is disposed in the stator cavity 1321, and then the rotor 132 is fixedly connected to the crankshaft 150, or the rotor 132 may be mounted to the stator 131, such that the stator 131 is disposed in the stator cavity 1321, and then the stator 131 is mounted to the stator mounting sleeve 120, and the rotor 132 is fixedly connected to the crankshaft 150.
Because the stator 131 is sleeved on the stator mounting sleeve 120, the stator 131 can be fixed on the stator mounting sleeve 120 through various fixing mounting manners, for example, mutual fixation is realized through an interference fit connection manner, and for example, the material of the stator mounting sleeve 120 is set to be the same as or similar to the material of the iron core of the stator 131 and mutual fixation is realized through a welding manner, so that the mounting stability of the stator 131 can be effectively ensured, and the working reliability of the outer rotor compressor 100 can be effectively improved; meanwhile, the stator mounting sleeve 120 is sleeved outside the bearing 112 and the stator mounting sleeve 120 is in clearance fit with the bearing 112, so that the situation that the shaft hole of the bearing 112 is deformed due to the extrusion influence of the stator 131 on the bearing 112 can be avoided, and the working stability of the outer rotor compressor 100 can be effectively improved.
In an embodiment, as shown in fig. 1 to 4, the external rotor compressor 100 further includes a fastener 140, the shaft seat 111 is provided with a first connection hole 1111, the stator mounting sleeve 120 is provided with a second connection hole 1221 opposite to the first connection hole 1111, and the fastener 140 is disposed through the first connection hole 1111 and the second connection hole 1221 and fixes the stator mounting sleeve 120 on the shaft seat 111. In other words, the stator mounting sleeve 120 is detachably mounted on the shaft seat 111, and when the stator 131 needs to be repaired, the stator mounting sleeve 120 can be detached from the shaft seat 111, and then the stator 131 and the stator mounting sleeve 120 are taken out together to repair the stator 131, so that the maintainability of the outer rotor compressor 100 can be effectively improved.
In the above embodiment, the outer rotor compressor 100 includes the plurality of fasteners 140, the plurality of first connection holes 1111 and the plurality of second connection holes 1221, and the fasteners 140, the plurality of first connection holes 1111 and the plurality of second connection holes 1221 correspond to each other one by one, and the plurality of first connection holes 1111 are uniformly spaced around the axis of the bearing 112, and it can be understood that the plurality of second connection holes 1221 are also uniformly spaced around the axis of the bearing 112. Therefore, the installation stress of the stator installation sleeve 120 in the circumferential direction becomes more uniform, so that the installation stability of the stator installation sleeve 120 can be effectively improved, that is, the installation stability of the stator 131 is further improved, and further, the working reliability of the outer rotor compressor 100 can be further improved.
It should be noted that the number of the fastener 140, the first connection hole 1111 and the second connection hole 1221 may be determined according to actual needs, and specifically may be two, four, eight, and the like, and is not limited herein.
In the above embodiment, the first connection hole 1111 is a counter bore, and the second connection hole 1221 is a threaded hole; or, the first connection hole 1111 is a threaded hole, and the second connection hole 1221 is a counter bore; the fastening member 140 is a bolt, and the bolt is inserted into the screw hole through the counter bore, so that the head of the bolt can be positioned in the counter bore, thereby preventing the head of the bolt from interfering with other components of the external rotor compressor 100.
In another embodiment, the stator mounting sleeve 120 is welded to the shaft seat 111, so that the mounting stability of the stator mounting sleeve 120 can be effectively ensured, and the production cost of the outer rotor compressor 100 can be effectively reduced.
In the two embodiments, please refer to fig. 2 to 4, the stator mounting sleeve 120 includes a sleeve 121 and a connecting seat 122, the sleeve 121 is used for being sleeved with the bearing 112, the stator 131 is sleeved on the sleeve 121, the connecting seat 122 is disposed at an end of the sleeve 121 facing the shaft seat 111, and the connecting seat 122 is used for connecting the shaft seat 111, in other words, when the stator mounting sleeve 120 is detachably mounted on the shaft seat 111, the second connecting hole 1221 is opened on the connecting seat 122, and when the stator mounting sleeve 120 is mounted on the shaft seat 111 in a welding manner, the connecting seat 122 is used for welding the shaft seat 111.
In one embodiment, the stator 131 is in interference fit with the stator mounting sleeve 120, in other words, the inner bore diameter of the stator 131 is slightly smaller than the outer diameter of the sleeve 121 of the stator mounting sleeve 120, so that the stator 131 and the sleeve 121 are tightly fitted together, and thus the mounting stability of the stator 131 can be effectively improved.
In another embodiment, the stator mounting sleeve 120 is made of steel, in other words, the stator mounting sleeve 120 is made of steel, and the stator 131 is welded to the stator mounting sleeve 120. It can be understood that, because the iron core of stator 131 usually adopts silicon steel to make, and through adopting above-mentioned stator installation cover 120 of steel preparation, can make the material of stator 131 and the material of stator installation cover 120 similar, can effectively improve the welding performance between stator 131 and the stator installation cover 120 like this to can effectively improve the installation steadiness of stator 131.
Optionally, the stator mounting sleeve 120 is made of silicon steel, in other words, the stator mounting sleeve 120 is made of silicon steel, so that the material of the stator mounting sleeve 120 is the same as the material of the iron core of the stator 131, and thus the welding performance between the stator 131 and the stator mounting sleeve 120 can be further improved, and the mounting stability of the stator 131 can be further improved.
In one embodiment, as shown in fig. 3 and 4, the outer peripheral wall of the stator mounting sleeve 120 is provided with a step portion 1211, and it can be understood that the step portion 1211 is formed on the outer peripheral wall of the sleeve 121, and after the stator 131 is sleeved on the sleeve 121, a side of the stator 131 facing the shaft seat 111 abuts against the step portion 1211, so as to define a mounting position of the stator 131.
Specifically, the step 1211 is an annular structure surrounding the axis of the sleeve 121, and since the step 1211 is usually formed by a turn milling process, as shown in fig. 4, in order to prevent the stator 131 from being unable to fit with the end surface of the step 1211 due to the inner edge of the end surface of the step 1211 being chamfered, a groove 1212 is formed on the outer circumferential wall of the sleeve 121, the groove 1212 can also be formed by the turn milling process, the groove 1212 is continuous with the end surface of the step 1211 facing the stator 131, in other words, the groove 1212 is formed at the inner edge of the end surface of the step 1211 facing the stator 131, it can be understood that the groove 1212 is an annular groove surrounding the axis of the sleeve 121, so that the straightness of the end surface of the step 1211 after the turn milling process can be ensured, and therefore, the stator 131 can be tightly fitted with the end surface of the step 1211.
A second aspect of the present invention provides a refrigeration apparatus including the above-described outer rotor compressor 100.
The refrigeration equipment includes, but is not limited to, an air conditioner and a refrigerator.
Since the refrigeration apparatus employs the outer rotor compressor 100 of any one of the above embodiments, at least the beneficial effects of the above embodiments are achieved, and details are not repeated here.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An outer rotor compressor, comprising:
the crankcase comprises a shaft seat and a bearing, wherein the bearing is arranged on the shaft seat;
the stator mounting sleeve is mounted on the shaft seat, is sleeved on the periphery of the bearing and is in clearance fit with the peripheral surface of the bearing;
the outer rotor motor comprises a stator, wherein the stator is sleeved on the stator mounting sleeve, and the stator is fixedly connected with the stator mounting sleeve.
2. The external rotor compressor of claim 1, wherein: the outer rotor compressor further comprises a fastener, a first connecting hole is formed in the shaft seat, a second connecting hole opposite to the first connecting hole is formed in the stator mounting sleeve, and the fastener penetrates through the first connecting hole and the second connecting hole and fixes the stator mounting sleeve on the shaft seat.
3. The external rotor compressor of claim 2, wherein: the outer rotor compressor comprises a plurality of fastening pieces, a plurality of first connecting holes and a plurality of second connecting holes, the fastening pieces, the first connecting holes and the second connecting holes are in one-to-one correspondence, and the plurality of first connecting holes are uniformly distributed at intervals around the axis of the bearing.
4. The external rotor compressor of claim 2, wherein:
the first connecting hole is a counter bore, and the second connecting hole is a threaded hole; alternatively, the first and second electrodes may be,
the first connecting hole is a threaded hole, and the second connecting hole is a counter bore;
the fastener is a bolt, and the bolt penetrates through the counter bore and is connected into the threaded hole.
5. The external rotor compressor of claim 1, wherein: the stator mounting sleeve is welded with the shaft seat.
6. The external rotor compressor of any one of claims 1-5, wherein: the stator is in interference fit with the stator mounting sleeve.
7. The external rotor compressor of any of claims 1-5, wherein: the stator mounting sleeve is a steel part, and the stator is welded with the stator mounting sleeve.
8. The external rotor compressor of any of claims 1-5, wherein: the periphery wall of the stator mounting sleeve is provided with a step part, and one side of the stator facing the shaft seat is abutted to the step part.
9. The external rotor compressor of claim 8, wherein: the peripheral wall of the stator mounting sleeve is provided with a groove, and the groove and the stepped part are communicated with each other towards the end face of the stator.
10. A refrigeration apparatus, characterized by: the refrigeration equipment comprises the external rotor compressor according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220404553.3U CN216812051U (en) | 2022-02-24 | 2022-02-24 | Outer rotor compressor and refrigeration plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220404553.3U CN216812051U (en) | 2022-02-24 | 2022-02-24 | Outer rotor compressor and refrigeration plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216812051U true CN216812051U (en) | 2022-06-24 |
Family
ID=82043125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220404553.3U Active CN216812051U (en) | 2022-02-24 | 2022-02-24 | Outer rotor compressor and refrigeration plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216812051U (en) |
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2022
- 2022-02-24 CN CN202220404553.3U patent/CN216812051U/en active Active
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