CN212462908U - Stator and compressor - Google Patents

Abstract

The utility model discloses a stator and compressor, the stator is provided with a first opening and a second opening, the first opening and the second opening are arranged along the height direction of the stator at intervals, a first channel is formed between the first opening and the second opening, the first channel comprises a first flow passage and a second flow passage, both ends of the second flow passage are communicated with the first flow passage, the flow resistance of the first flow passage is smaller than the flow resistance of the second flow passage, a refrigerant with refrigeration oil enters along the first opening and is respectively conveyed along the first flow passage and the second flow passage, because the flow resistance of the first flow passage is smaller than the flow resistance of the second flow passage, the impact force of the refrigerant can be reduced by additionally increasing a second flow passage with large flow resistance, when the refrigeration oil is conveyed under the action of gravity, the refrigeration oil can preferentially return along the first flow passage with small flow resistance, and the resistance to the refrigeration oil backflow is correspondingly reduced, further, the oil return rate of the refrigeration oil can be increased.

Description

Stator and compressor

Technical Field

The utility model relates to a compressor technical field especially relates to a stator and compressor.

Background

The air conditioner compressor functions to compress a driving refrigerant in an air conditioner refrigerant circuit. An air conditioner compressor is generally installed in an outdoor unit. The air conditioner compressor extracts the refrigerant from a low-pressure area, compresses the refrigerant and sends the compressed refrigerant to a high-pressure area for cooling and condensation, heat is emitted into air through the radiating fins, the refrigerant is changed from a gas state into a liquid state, and the pressure is increased.

However, when the conventional compressor is used, the pump body parts are worn, so that the reliability of the compressor is reduced.

SUMMERY OF THE UTILITY MODEL

Based on this, to traditional compressor when using, pump body part wearing and tearing often appear, lead to the problem of compressor reliability decline, provided a stator and compressor, this stator and compressor can reduce the wearing and tearing of pump body part when using, and then promoted compressor's reliability.

The specific technical scheme is as follows:

on the one hand, the application relates to a stator, the stator is equipped with first opening and second opening, first opening with the second opening is followed the direction of height interval of stator sets up, first opening with be formed with first passageway between the second opening, first passageway includes first runner and second runner, the both ends of second runner all with first runner intercommunication, the circulation resistance of first runner is less than the circulation resistance of second runner.

When the stator is used, a refrigerant with refrigeration oil enters the first channel along the first opening and is conveyed along the first flow channel and the second flow channel respectively, and the flow resistance of the first flow channel is smaller than that of the second flow channel, so that compared with the mode that the first flow channel is arranged independently, the impact force generated when the refrigerant is discharged can be reduced by additionally arranging the second flow channel with large flow resistance. When the refrigeration oil returned along second opening to first passageway, when the refrigeration oil was carried under the effect of gravity, the first flow path oil return that the circulation resistance is little can be preferentially followed to the refrigeration oil, and the refrigerant is to the corresponding reduction of resistance of refrigeration oil backward flow this moment in addition, and then can increase the oil return rate of refrigeration oil, so can reduce the wearing and tearing of pump body part, and then promote the reliability of compressor.

The technical solution is further explained below:

in one embodiment, the second flow channel is zigzag, and the distance from the first flow channel to the first opening gradually decreases along the direction from the second opening to the first opening.

In one embodiment, the number of the first flow channels is at least two, the number of the second flow channels is at least two, one first flow channel and one second flow channel correspondingly form a flow channel group, and two adjacent flow channel groups are communicated with each other.

In one embodiment, the first flow channel is a bent flow channel.

In one embodiment, the second flow channel in one of the flow channel groups and the second flow channel of another adjacent flow channel group are located on different two sides.

In one embodiment, the second flow channel includes a first section and a second section, the first section includes a first end and a second end, the second section includes a third end and a fourth end, the first end is communicated with the first flow channel, the second end is communicated with the third end, the fourth end is communicated with the first flow channel, and the second end and the third end are arranged at an included angle.

In one embodiment, a third opening is formed in the second section at the fourth end, and the second section is bent along a direction from the third end to the fourth end, so that a refrigerant discharge direction of the third opening is perpendicular to or opposite to a refrigerant discharge direction of the first flow channel.

In one embodiment, the first section is a straight flow passage and the second section is an arc flow passage.

In one embodiment, the first flow channel has a length M and the second flow channel has a length T, wherein 1.1 ≦ (M + T)/(M-T) 10.

In one embodiment, the number of the first passages is at least two, and the first passages are arranged on the circumferential side wall of the stator at intervals along the circumferential direction of the stator.

In another aspect, the present application also relates to a compressor including the stator in any of the above embodiments.

When the compressor is used, a refrigerant with refrigeration oil enters the first channel along the first opening and is conveyed along the first flow channel and the second flow channel respectively, and the flow resistance of the first flow channel is smaller than that of the second flow channel, so that compared with the case that the first flow channel is arranged independently, the impact force generated when the refrigerant is discharged can be reduced by additionally arranging the second flow channel with large flow resistance. When the refrigeration oil returned along second opening to first passageway, when the refrigeration oil was carried under the effect of gravity, the first flow path oil return that the circulation resistance is little can be preferentially followed to the refrigeration oil, and the refrigerant is to the corresponding reduction of resistance of refrigeration oil backward flow this moment in addition, and then can increase the oil return rate of refrigeration oil, so can reduce the wearing and tearing of pump body part, and then promote the reliability of compressor.

The technical solution is further explained below:

in one embodiment, the compressor further comprises an installation shell, the stator is arranged in the installation shell, a first protrusion matched with the stator in an abutting mode is arranged on the inner wall of the installation shell, a fourth opening and a fifth opening are formed in the first protrusion, the fourth opening and the fifth opening are arranged at intervals along the height direction of the stator, a second channel is formed between the fourth opening and the fifth opening, the second channel comprises a third channel and a fourth channel, two ends of the fourth channel are communicated with the third channel, and the circulation resistance of the third channel is smaller than that of the fourth channel.

On the other hand, this application compressor, including stator and installation casing, the stator set up in the installation casing, the inner wall of installation casing be equipped with stator butt complex second is protruding, the second arch is equipped with sixth opening and seventh opening, the sixth opening with the seventh opening is followed the bellied direction of height interval of second sets up, the sixth opening with be formed with the third passageway between the seventh opening, the third passageway includes fifth runner and sixth runner, the both ends of sixth runner all with the fifth runner intercommunication, the circulation resistance of fifth runner is less than the circulation resistance of sixth runner.

When the compressor is used, a refrigerant with refrigeration oil enters the third channel along the sixth opening and is conveyed along the fifth flow channel and the sixth flow channel respectively, and as the flow resistance of the fifth flow channel is smaller than that of the sixth flow channel, compared with the case of independently arranging the fifth flow channel, the impact force generated when the refrigerant is discharged can be reduced by additionally arranging the sixth flow channel with large flow resistance. When the refrigeration oil returns along the seventh opening to the third passage, the refrigeration oil is preferentially returned along the fifth flow passage with small circulation resistance when being conveyed under the action of gravity, and the resistance of the refrigerant to the refrigeration oil backflow is correspondingly reduced at the moment, so that the oil return rate of the refrigeration oil can be increased, the abrasion of pump body parts can be reduced, and the reliability of the compressor is improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention in any way.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 these drawings without inventive labor.

Furthermore, the drawings are not to scale of 1:1, and the relative dimensions of the various elements in the drawings are drawn only by way of example and not necessarily to true scale.

FIG. 1 is a schematic view of a compressor according to an embodiment;

FIG. 2 is a schematic view of a compressor according to another embodiment;

FIG. 3 is a schematic structural diagram of a stator according to an embodiment;

FIG. 4 is a schematic diagram of a first channel in one embodiment;

FIG. 5 is a schematic structural diagram of a first channel in another embodiment;

fig. 6 is a schematic structural diagram of one view angle of the stator in an embodiment.

Description of reference numerals:

10. a compressor; 100. installing a shell; 110. a second protrusion; 112. a seventh opening; 200. a stator; 210. a first opening; 220. a second opening; 230. a first channel; 232. a first flow passage; 234. a second flow passage; 2342. a first stage; 2344. a second stage; 23442. a third opening; 300. a rotor; 310. a rotor flow aperture; 400. oil baffle plate.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

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", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the use process of a general compressor, the discharge of the refrigeration oil needs to flow through a plurality of channels of a motor, namely a stator trimming gap, a stator wire package gap, a rotor flow hole and a stator-rotor gap. But at the moment that the valve block is opened and is carried out the exhaust, four passageways are ascending gas flow, and too big exhaust flow velocity leads to the stator to cut edge and upwards produced great gas force, and this kind of gas force makes originally because the refrigerated oil of gravity downward flow is blown to the motor upper chamber again, is unfavorable for the refrigerated oil to flow back to the oil bath, because the refrigerated oil can't flow back smoothly, leads to the pump body part of compressor can produce wearing and tearing when using.

Based on this, the present application provides a stator 200 and a compressor 10, which can reduce the wear of pump body parts when the stator 200 and the compressor 10 are used, thereby improving the reliability of the compressor 10.

Referring to fig. 1 and 2, in an embodiment, a compressor 10 includes an installation casing 100, a stator 200, a rotor 300, and an oil baffle 400, the rotor 300 is formed with a rotor circulation hole 310, the stator 200, the rotor 300, and the oil baffle 400 are all disposed in the installation casing 100, and the stator 200, the rotor 300, and the oil baffle 400 can be installed by using an installation method of the compressor 10 in the prior art, which is not described in detail herein. When the cooling device is used, the refrigerant is conveyed to the oil baffle 400 along the rotor circulation hole 310, the oil baffle 400 throws the refrigeration oil onto the inner wall of the installation shell 100 under the centrifugal force generated during rotation, at the moment, the refrigeration oil flows to the circumferential side wall of the stator 200 to flow back to the oil pool under the action of gravity, and the flow of the gaseous refrigerant is as shown in fig. 1.

Referring to fig. 3, in this embodiment, the stator 200 is provided with a first opening 210 and a second opening 220, the first opening 210 and the second opening 220 are arranged at intervals along a height direction of the stator 200, and a first channel 230 is formed between the first opening 210 and the second opening 220, wherein the height direction of the stator 200 is shown by an arrow in fig. 3. The first opening 210 and the second opening 220 are spaced apart in the height direction so that the refrigerant oil may flow back by its own weight when entering the first passage 230 along the second opening 220.

Referring to fig. 4, further, the first channel 230 includes a first flow channel 232 and a second flow channel 234, two ends of the second flow channel 234 are both communicated with the first flow channel 232, at this time, when the refrigerant enters along the first opening 210, the refrigerant can be simultaneously conveyed in the first flow channel 232 and the second flow channel 234, and the flow resistance of the first flow channel 232 is smaller than the flow resistance of the second flow channel 234. The flow resistance refers to the difficulty of transporting the refrigerant and the refrigerant oil in the first flow channel 232 and the second flow channel 234, and is large, so that the refrigerant and the refrigerant oil are difficult to flow, and conversely, the flow resistance is small, so that the refrigerant and the refrigerant oil are easier to flow.

Referring to fig. 4, when the stator 200 is used, the refrigerant with the refrigerant oil enters the first channel 230 along the first opening 210 and is respectively conveyed along the first flow passage 232 and the second flow passage 234, and since the flow resistance of the first flow passage 232 is smaller than that of the second flow passage 234, compared with the case where the first flow passage 232 is separately provided, the impact force when the refrigerant is discharged can be reduced by additionally providing the second flow passage 234 having a large flow resistance. Referring to fig. 5, when the refrigerant oil returns along the second opening 220 to the first passage 230, and the refrigerant oil is conveyed under the action of gravity, the refrigerant oil preferentially returns along the first flow passage 232 with small circulation resistance, and the resistance of the refrigerant to the refrigerant oil backflow at this time is correspondingly reduced, so that the oil return rate of the refrigerant oil can be increased, the abrasion of pump body parts can be reduced, and the reliability of the compressor 10 is improved.

Specifically, referring to fig. 3, the number of the first passages 230 is at least two, and the first passages 230 are disposed on the circumferential side wall of the stator 200 at intervals along the circumferential direction of the stator 200. As such, the backflow efficiency of the refrigerant oil may be improved by providing at least two first passages 230.

Referring to fig. 4, in one embodiment, the second flow channel 234 is zigzag, so that the flow resistance of the second flow channel 234 can be increased by designing the second flow channel 234 to be zigzag.

Further, referring to fig. 4, the second flow channel 234 includes a first segment 2342 and a second segment 2344, the first segment 2342 includes a first end and a second end, the second segment 2344 includes a third end and a fourth end, the first end is communicated with the first flow channel 232, the second end is communicated with the third end, the fourth end is communicated with the first flow channel 232, and the second end and the third end are disposed at an included angle. Thus, the second end and the third end are arranged at an included angle, so that the whole second flow channel 234 is zigzag, and the flow resistance of the second flow channel 234 can be increased.

Further, referring to fig. 4, the second section 2344 is provided with a third opening 23442 at the fourth end, and the second section 2344 is bent along the direction from the third end to the fourth end, so that the refrigerant discharging direction of the third opening 23442 is perpendicular to or opposite to the refrigerant discharging direction of the first flow channel 232. Referring to fig. 4, the arrow indicates the discharge direction of the refrigerant, i.e. the direction of the refrigerant flowing in the first flow channel 232 and the second flow channel 234. When the refrigerant is discharged along the third opening 23442, the airflow impact force generated by the refrigerant may hinder the refrigerant from flowing along the first flow channel 232, so that the refrigerant may have a large resistance when flowing in the first channel 230, and the refrigerant may be discharged along the first channel 230 to improve the backflow efficiency of the refrigerant oil. Specifically, the first segment 2342 is a straight flow path and the second segment 2344 is an arcuate flow path. Preferably, the second segment 2344 is bent in a direction from the third end to the fourth end such that the refrigerant discharge direction of the third opening 23442 is opposite to the refrigerant discharge direction of the first flow channel 232.

Specifically, referring back to fig. 3, the distance from the first flow passage 232 to the first opening 210 gradually decreases along the direction from the second opening 220 to the first opening 210, so that the refrigerant oil can be smoothly transported along the first flow passage 232 under the action of gravity when entering along the second opening 220. Specifically, referring to fig. 5, in the present embodiment, the first flow channel 232 is a bent flow channel.

The distance from the first flow channel 232 to the first opening 210 gradually decreases along the direction from the second opening 220 to the first opening 210, which means that the distance from each position of the first flow channel 232 to the first opening 210 along the direction from the second opening 220 to the first opening 210 gradually decreases.

Referring to fig. 5, the number of the first channels is at least two, the number of the second channels 234 is at least two, one first channel 232 and one second channel 234 correspondingly form a channel group, and two adjacent channel groups are communicated with each other. Thus, the resistance of the refrigerant flowing through the first channel 230 is relatively high by the at least two second channels 234, so as to further increase the discharge resistance of the refrigerant along the first channel 230, thereby increasing the backflow efficiency of the refrigerant oil.

Further, please refer to fig. 5, wherein the second flow channel 234 of one of the flow channel groups and the second flow channel 234 of another adjacent flow channel group are located on different two sides. Therefore, the flow channel of the refrigerant in the first channel 230 can be more tortuous, and the discharge resistance of the refrigerant along the first channel 230 is further improved, so as to improve the backflow efficiency of the refrigeration oil.

Specifically, referring to FIG. 6, the length of the first flow channel 232 is M, and the length of the second flow channel 234 is T, wherein, the ratio of (M + T)/(M-T) is 1.1 ≦ 10. Thus, in this range, the first flow channel 232 and the second flow channel 234 cooperate to form a typical muffler device, and the principle is that when the refrigerant flows through the first channel 230, a split flow is generated, and when sound is respectively transmitted along the first flow channel 232 and the second flow channel 234, the lengths of which are integral odd times of the wavelength γ/2 of the sound wave, the sound wave is attenuated or disappeared at the position of a sink due to the reverse interference phenomenon, and meanwhile, the discharge pressure pulsation when the refrigerant is discharged can be reduced, thereby reducing the noise on the premise of ensuring the performance of the compressor 10.

In another embodiment, the stator 200 is disposed in the installation casing 100, a first protrusion abutted and matched with the stator 200 is disposed on an inner wall of the installation casing 100, the first protrusion is provided with a fourth opening and a fifth opening, the fourth opening and the fifth opening are disposed at intervals along a height direction of the stator 200, a second channel is formed between the fourth opening and the fifth opening, the second channel includes a third flow channel and a fourth flow channel, both ends of the fourth flow channel are both communicated with the third flow channel, and a flow resistance of the third flow channel is smaller than a flow resistance of the fourth flow channel. Therefore, the refrigerant with the refrigeration oil enters the second channel along the fourth opening and is conveyed along the third flow channel and the fourth flow channel respectively, and the impact force of the refrigerant during discharge can be reduced by additionally arranging the fourth flow channel with large circulation resistance compared with the case of independently arranging the third flow channel because the circulation resistance of the third flow channel is smaller than that of the fourth flow channel. When the refrigeration oil returns along the fifth opening to the second passage, the refrigeration oil is preferentially returned along the third passage with small circulation resistance when being conveyed under the action of gravity, and the resistance of the refrigerant to the backflow of the refrigeration oil is correspondingly reduced at the moment, so that the oil return rate of the refrigeration oil can be increased, the abrasion of pump body parts can be reduced, and the reliability of the compressor 10 is improved. The structure of the second channel is similar to that of the first channel 230 in any of the above embodiments, and the detailed structure is not repeated herein.

In addition, please refer back to fig. 2, the present application further relates to a compressor 10, which includes a stator 200 and an installation housing 100, wherein the stator 200 is disposed in the installation housing 100, a second protrusion 110 abutting against and matching with the stator 200 is disposed on an inner wall of the installation housing 100, the second protrusion 110 is provided with a sixth opening and a seventh opening 112, the sixth opening and the seventh opening 112 are disposed at intervals along a height direction of the second protrusion 110, a third channel is formed between the sixth opening and the seventh opening 112, the third channel includes a fifth channel and a sixth channel, two ends of the sixth channel are both communicated with the fifth channel, and a flow resistance of the fifth channel is smaller than a flow resistance of the sixth channel. The structure of the third channel is similar to that of the first channel 230 in any of the above embodiments, and the detailed structure is not repeated herein.

When the compressor 10 is in use, the refrigerant with the refrigeration oil enters the third channel along the sixth opening and is conveyed along the fifth flow channel and the sixth flow channel respectively, and because the flow resistance of the fifth flow channel is smaller than that of the sixth flow channel, compared with the case of separately arranging the fifth flow channel, the impact force generated when the refrigerant is discharged can be reduced by additionally arranging the sixth flow channel with large flow resistance. When the refrigeration oil returns along the seventh opening 112 to the third passage, and the refrigeration oil is conveyed under the action of gravity, the refrigeration oil preferentially returns along the fifth flow passage with small circulation resistance, and the resistance of the refrigerant to the refrigeration oil backflow is correspondingly reduced at the moment, so that the oil return rate of the refrigeration oil can be increased, the abrasion of pump body parts can be reduced, and the reliability of the compressor 10 is improved.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (13)

1. The utility model provides a stator, its characterized in that, the stator is equipped with first opening and second opening, first opening with the second opening is followed the direction of height interval of stator sets up, first opening with be formed with first passageway between the second opening, first passageway includes first runner and second runner, the both ends of second runner all with first runner intercommunication, the circulation resistance of first runner is less than the circulation resistance of second runner.

2. The stator according to claim 1, wherein the second flow channel is zigzag-shaped, and a distance from the first flow channel to the first opening is gradually decreased in a direction from the second opening to the first opening.

3. The stator according to claim 2, wherein the number of the first flow channels is at least two, the number of the second flow channels is at least two, one first flow channel and one second flow channel correspondingly form a flow channel group, and two adjacent flow channel groups are communicated with each other.

4. The stator as claimed in claim 3 wherein the first flow passage is a bent type flow passage.

5. The stator of claim 3 wherein said second flow passage of one of said flow passage sets is on a different side than said second flow passage of another adjacent one of said flow passage sets.

6. The stator of claim 2, wherein the second flow path includes a first section and a second section, the first section including a first end and a second end, the second section including a third end and a fourth end, the first end in communication with the first flow path, the second end in communication with the third end, the fourth end in communication with the first flow path, the second end and the third end disposed at an included angle.

7. The stator according to claim 6, wherein the second section is provided with a third opening at the fourth end, and the second section is bent along a direction from the third end to the fourth end so that a refrigerant discharge direction of the third opening is perpendicular to or opposite to a refrigerant discharge direction of the first flow channel.

8. The stator of claim 6 wherein the first segment is a straight flow path and the second segment is an arcuate flow path.

9. The stator of claim 7, wherein the first flow channel has a length M and the second flow channel has a length T, and wherein 1.1 ≦ (M + T)/(M-T) ≦ 10.

10. The stator according to any one of claims 1 to 9, wherein the number of the first passages is at least two, and the first passages are provided at circumferential side walls of the stator at intervals in a circumferential direction of the stator.

11. A compressor, characterized by comprising a stator according to any one of claims 1 to 10.

12. The compressor of claim 11, further comprising a mounting housing, wherein the stator is disposed in the mounting housing, a first protrusion abutting against and matching with the stator is disposed on an inner wall of the mounting housing, the first protrusion is provided with a fourth opening and a fifth opening, the fourth opening and the fifth opening are spaced apart in a height direction of the stator, a second channel is formed between the fourth opening and the fifth opening, the second channel includes a third channel and a fourth channel, both ends of the fourth channel are communicated with the third channel, and a flow resistance of the third channel is smaller than a flow resistance of the fourth channel.

13. The compressor is characterized by comprising a stator and an installation shell, wherein the stator is arranged in the installation shell, a second protrusion matched with the stator in an abutting mode is arranged on the inner wall of the installation shell, a sixth opening and a seventh opening are formed in the second protrusion, the sixth opening and the seventh opening are arranged at intervals in the height direction of the second protrusion, a third channel is formed between the sixth opening and the seventh opening and comprises a fifth channel and a sixth channel, the two ends of the sixth channel are communicated with the fifth channel, and the circulation resistance of the fifth channel is smaller than that of the sixth channel.

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