A compressor

Abstract

This invention relates to the field of compressor technology, and discloses a compressor including a sleeve, a motor, and a pump body. The motor and pump body are disposed inside the sleeve, which has a first chamber and a second chamber spaced apart. The pump body is disposed in the first chamber, and the motor is disposed in the second chamber. A cooling channel is provided on the inner wall of the sleeve surrounding the outer ring of the motor, with one end of the cooling channel connecting to the first chamber and the other end connecting to the second chamber. This invention guides the oil-gas mixture compressed by the pump body to the first chamber, and then guides it to the second chamber through the cooling channel, finally discharging it from the top of the second chamber. This allows for multiple cooling of the motor, prolonging the heat exchange time between the oil-gas mixture and the motor, and improving the cooling effect of the motor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a compressor. Background Technology

[0002] Currently, motors are widely used in various equipment and devices. For example, the motor in a compressor heats up due to the high-speed rotation of its stator and rotor while it is working. The temperature of the motor affects the amount of copper and iron losses in the silicon steel material. As the motor temperature continues to rise, the copper and iron losses in the silicon steel material increase, which will shorten the service life of the motor.

[0003] To address the aforementioned issues, in existing compressor technology, the refrigerant gas is compressed in the pump body and then discharged from the pump body. The oil-gas mixture flows through the motor's flow passage, exchanges heat with the motor to cool it down, and is then discharged into the upper chamber of the compressor. Finally, the oil-gas mixture is discharged from the compressor through the exhaust pipe. However, the cross-sectional area of ​​the motor's flow passage is relatively small, and the oil-gas mixture flows through the motor's flow passage for a short time, resulting in a limited cooling effect of the oil-gas mixture on the motor. Summary of the Invention

[0004] The purpose of this invention is to provide a compressor that addresses the problem in the prior art where the small cross-sectional area of ​​the motor's flow passage results in a short time for the oil-gas mixture to flow through the motor's flow passage, thus limiting the cooling effect of the oil-gas mixture on the motor.

[0005] To solve the above-mentioned technical problems, the objective of this invention is achieved through the following technical solution: providing a compressor, including a sleeve, a motor, and a pump body, wherein the motor and the pump body are disposed inside the sleeve, and a first chamber and a second chamber are spaced apart inside the sleeve; the pump body is disposed in the first chamber, and the motor is disposed in the second chamber;

[0006] The inner wall of the sleeve is provided with a cooling channel surrounding the outer ring of the motor. One end of the cooling channel is connected to the first chamber, and the other end of the cooling channel is connected to the second chamber.

[0007] Furthermore, the cooling channel includes a connected air intake channel and an exhaust channel, the air intake channel being connected to the first chamber and the exhaust channel being connected to the second chamber;

[0008] The airflow path of the intake channel extends spirally along the second chamber away from the first chamber, and the airflow path of the exhaust channel extends spirally along the first chamber away from the second chamber.

[0009] Furthermore, the cooling channel includes multiple channel loops, which are arranged circumferentially around the axis of the sleeve. Each channel loop includes a connected air intake channel and an exhaust channel; the air intake channel is connected to the first chamber, and the exhaust channel is connected to the second chamber.

[0010] Furthermore, the air intake passage extends linearly along the direction of the second chamber away from the first chamber, and the exhaust passage extends linearly along the direction of the first chamber away from the second chamber.

[0011] Furthermore, the intake and exhaust channels form a spiral structure with a rotational circumference of less than one revolution.

[0012] Furthermore, the inner wall of the sleeve is provided with an inlet and outlet connecting channel, and the inlet channel and the outlet channel are respectively connected to the inlet and outlet connecting channel.

[0013] Furthermore, the air intake channel and the exhaust channel are distributed at intervals along the thickness direction of the inner wall of the sleeve.

[0014] Furthermore, the sleeve is provided with a partition, and the sleeve is divided into a first chamber and a second chamber by the partition.

[0015] Furthermore, the inner wall of the housing is provided with an air inlet and an air outlet; the air inlet channel is connected to the air inlet, and the air outlet channel is connected to the air outlet.

[0016] Furthermore, the partition is provided with a connecting portion, the connecting portion abuts against the air inlet, and the connecting portion is provided with an air vent, the air vent connecting to the first chamber.

[0017] This invention provides a compressor, including a sleeve, a motor, and a pump body. The motor and pump body are disposed inside the sleeve, which has a first chamber and a second chamber spaced apart. The pump body is disposed in the first chamber, and the motor is disposed in the second chamber. A cooling channel is provided on the inner wall of the sleeve surrounding the outer ring of the motor, with one end of the cooling channel connecting to the first chamber and the other end connecting to the second chamber. This invention guides the compressed oil-gas mixture to the first chamber, then through the cooling channel to the second chamber, and finally discharges it from the top of the second chamber. This allows for multiple cooling of the motor, prolonging the heat exchange time between the oil-gas mixture and the motor, and improving the cooling effect of the motor. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the compressor provided in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the cooling channel of the compressor provided in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0022] Figure 4 A schematic diagram of an alternative embodiment of the cooling channel of the compressor provided in this invention;

[0023] Figure 5 for Figure 4 A magnified view of B in the middle.

[0024] Explanation of the markings in the image:

[0025] 1. Dispenser;

[0026] 2. Compressor; 21. Pump body; 211. Upper bearing; 212. Lower bearing; 22. Silencer; 23. Partition plate; 231. Vent; 24. First chamber; 25. Second chamber; 26. Motor; 261. Stator; 262. Rotor; 263. Shaft; 27. Sleeve; 28. Inlet passage; 281. Inlet; 29. ​​Exhaust passage; 291. Exhaust port; 210. Inlet and exhaust connection passage. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0029] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0031] Combination Figure 1 and Figure 2 This invention provides a compressor, including a sleeve 27, a motor 26 and a pump body 21. The motor 26 and the pump body 21 are disposed inside the sleeve 27. A first chamber 24 and a second chamber 25 are disposed at intervals inside the sleeve 27. The pump body 21 is disposed in the first chamber 24 and the motor 26 is disposed in the second chamber 25.

[0032] The inner wall of the sleeve 27 is provided with a cooling channel surrounding the outer ring of the motor 26. One end of the cooling channel is connected to the first chamber 24, and the other end of the cooling channel is connected to the second chamber 25.

[0033] In this embodiment, a distributor 1 is externally connected to the compressor 2. The distributor 1 stores an oil-gas mixture. The outlet of the distributor 1 is connected to the pump body 21 of the compressor 2. After the oil-gas mixture is compressed by the pump body 21, it is discharged from the outlet of the pump body 21. The upper and lower end faces of the pump body 21 are respectively connected to an upper bearing 211 and a lower bearing 212. The upper bearing 211 and the lower bearing 212 are covered with a silencer 22, which can reduce the noise of the compressor 2 during the compression of the oil-gas mixture by the pump body 21. After being discharged from the outlet of the pump body 21, the oil-gas mixture enters the cavity formed by the silencer and the upper bearing 211 through the aperture of the upper bearing 211, then flows into the first chamber 24 through the aperture of the cavity, then flows into the second chamber 25 through the cooling channel, and finally is discharged from the compressor 2 through the exhaust pipe of the compressor 2.

[0034] In this embodiment, the motor 26 includes a stator 261, a rotor 262, and a shaft 263. The stator 261 is attached to the inner wall of the sleeve 27, the rotor 262 is rotatably mounted on the inner ring of the stator 261, and the shaft 263 passes through the inner ring of the rotor 262. A cooling channel is formed in the inner wall of the sleeve 27, extending from the position of the first chamber 24 to the top position of the second chamber 25. This arrangement prolongs the heat exchange time between the oil-gas mixture and the outer ring of the stator 261 when the oil-gas mixture flows through the cooling channel, thus improving the cooling effect of the motor 26.

[0035] In this process, the oil-gas mixture flows into the cooling channel from the first chamber 24, then into the second chamber 25 from the bottom, and then flows through the gap between the stator 261, rotor 262, and shaft 263 to the exhaust pipe of the compressor 2, and finally exits from the exhaust pipe. During this process, the oil-gas mixture initially cools the outer ring of the stator 261 as it flows from the bottom to the top of the cooling channel. As it flows back to the bottom of the second chamber 25, it cools the outer ring of the stator 261 a second time. Then, as it flows from the top of the second chamber 25, it cools the motor 26 through the gap between the stator 261, rotor 262, and shaft 263. By repeatedly cooling the motor 26, the heat exchange contact area between the oil-gas mixture and the motor 26 is increased, thereby improving the cooling effect of the motor 26.

[0036] It should be noted that because the cooling channel path is extended, when the oil-gas mixture flows through the cooling channel, the oil-gas mixture has more contact time with the wall surface. The oil in the oil-gas mixture will adhere to the wall surface. As the oil accumulates, it is easier for the oil to settle down under the action of gravity, thus preventing the oil from being discharged from the exhaust pipe of compressor 2 and reducing the oil content in the exhaust of compressor 2.

[0037] The cooling channel of this invention is described in detail below:

[0038] Please see Figure 2 and Figure 3 As shown in Embodiment 1: The cooling channel includes an intake channel 28 and an exhaust channel 29 that are connected. The intake channel 28 is connected to the first chamber 24, and the exhaust channel 29 is connected to the second chamber 25.

[0039] The airflow path of the intake passage 28 is spirally extended along the second chamber 25 away from the first chamber 24, and the airflow path of the exhaust passage 29 is spirally extended along the first chamber 24 away from the second chamber 25.

[0040] In this embodiment, for ease of understanding, the appendix is ​​used as an example. Figure 2Taking the structural orientation as an example, the direction of the second chamber 25 away from the first chamber 24 is upward. When the oil-gas mixture flows through the intake channel 28, the oil-gas mixture rises spirally, prolonging the heat exchange time between the oil-gas mixture and the motor 26, and improving the initial cooling effect of the oil-gas mixture on the motor 26; when the oil-gas mixture flows through the exhaust channel 29, the oil-gas mixture descends spirally, prolonging the heat exchange time between the oil-gas mixture and the motor 26, and improving the second cooling effect of the oil-gas mixture on the motor 26; finally, the oil-gas mixture flows from the bottom of the second chamber 25 through the gap between the stator 261, rotor 262 and shaft 263 to the exhaust pipe, performing a third cooling effect on the motor 26. This setting can further lengthen the flow path of the oil-gas mixture and improve the cooling effect of the motor 26.

[0041] Please see Figure 4 and Figure 5 As shown in Embodiment 2: The cooling channel includes multiple channel loops, which are arranged circumferentially around the axis of the sleeve 27. Each channel loop includes a connected air intake channel 28 and an exhaust channel 29. The air intake channel 28 is connected to the first chamber 24, and the exhaust channel 29 is connected to the second chamber 25.

[0042] In this embodiment, after the oil-gas mixture is compressed by the pump body 21, it enters the first chamber 24 and then enters the channel circuit to cool the motor 26. Multiple channel circuits are arranged circumferentially around the axis of the sleeve 27, and each channel circuit can cool the outer ring of the motor 26, thus achieving all-around cooling of the outer ring of the motor 26 and improving the cooling effect. After flowing through each channel circuit, the oil-gas mixture converges in the second chamber 25. Then, as the oil-gas mixture flows from the bottom to the top of the second chamber 25, it cools the inner ring of the motor 26 again, thereby improving the cooling effect. In other words, the intake channel 28 in the channel circuit cools the outer ring of the motor 26 once when the oil-gas mixture flows in, and the exhaust channel 29 cools the outer ring of the motor 26 a second time when the oil-gas mixture flows in, thus achieving the purpose of multiple cooling of the motor 26.

[0043] In one specific implementation of the channel circuit, the intake channel 28 extends linearly along the second chamber 25 away from the first chamber 24, and the exhaust channel 29 extends linearly along the first chamber 24 away from the second chamber 25.

[0044] In this implementation, when the oil-gas mixture flows through the intake channel 28, it moves linearly upwards. Compared to a spiral upward movement, this reduces the resistance to the upward movement of the oil-gas mixture, allowing it to flow smoothly through the intake channel 28 and improving the initial cooling efficiency of the motor 26. When the oil-gas mixture flows through the exhaust channel 29, it moves linearly downwards. Compared to a spiral downward movement, this reduces the resistance to the downward movement of the oil-gas mixture, allowing it to flow smoothly through the intake channel 28 and improving the second cooling efficiency of the motor 26. Finally, the oil-gas mixture flows from the gap between the stator 261, rotor 262, and shaft 263 at the bottom of the second chamber 25 to the exhaust pipe, providing a third cooling effect on the motor 26.

[0045] In another specific implementation of the channel circuit, the intake channel 28 and the exhaust channel 29 form a spiral structure less than one rotation circumference.

[0046] Compared to the previous implementation, this embodiment sets the shapes of the intake channel 28 and the exhaust channel 29 to arc shapes. The intake of the intake channel 28 connects to the first chamber 24, and the exhaust of the exhaust channel 29 connects to the second chamber 25. The first chamber 24 and the second chamber 25 are spaced apart. Therefore, the cooling channel in this implementation can form a spiral structure with a rotational circumference of less than one revolution. By setting the shapes of the intake channel 28 and the exhaust channel 29 to arc shapes, compared to the straight-up and straight-down corner positions in the previous implementation, the corner positions in this embodiment have lower transport resistance and higher oil-gas mixture transport efficiency.

[0047] In one embodiment, the inner wall of the sleeve 27 is provided with an inlet and outlet connecting channel 210, and the inlet channel 28 and the outlet channel 29 are respectively connected to the inlet and outlet connecting channel 210.

[0048] In this embodiment, the intake passage 28 and the exhaust passage 29 are interconnected through the intake-exhaust connection passage 210. The oil-gas mixture flows into the intake passage 28 through the first cavity, and then flows into the intake-exhaust connection passage 210 for transfer. After entering the exhaust passage 29 from the intake-exhaust connection passage 210, it flows into the second cavity.

[0049] In this embodiment, the inlet and outlet connecting channel 210 can be arranged in a ring around the sleeve 27, forming a ring space around the sleeve 27. The intake channel 28 and the exhaust channel 29 are transferred through the inlet and outlet connecting channel 210, which can further increase the cross-sectional area of ​​the flow hole and prolong the flow time of the oil-gas mixture, thereby improving the cooling effect.

[0050] In one embodiment, the intake passage 28 and the exhaust passage 29 are spaced apart in the thickness direction of the inner wall of the sleeve 27.

[0051] In this embodiment, the intake channel 28 is located in the inner wall of the sleeve 27 and closer to the outside of the sleeve 27, while the exhaust channel 29 is located in the inner wall of the sleeve 27 and closer to the inside of the sleeve 27. With this arrangement, when the oil-gas mixture flows in the intake channel 28, it provides initial cooling to the motor 26. After the initial cooling, the oil-gas mixture is affected by the heat energy of the motor 26, and its temperature gradually rises, becoming higher than the initial temperature, which affects the cooling effect of the motor 26. By setting the exhaust channel 29 closer to the inside of the sleeve 27, that is, the distance between the exhaust channel 29 and the outer ring of the stator 261 is shorter, the distance between the oil-gas mixture and the motor 26 is closer when the oil-gas mixture flows through the exhaust channel 29. This facilitates the transfer of cooling energy from the oil-gas mixture to the motor 26, providing secondary cooling to the motor 26.

[0052] In one embodiment, the sleeve 27 is provided with a partition 23, and the sleeve 27 is divided into a first chamber 24 and a second chamber 25 by the partition 23.

[0053] In this embodiment, the two sides of the partition 23 are interference-fitted with the inner wall of the sleeve 27. Specifically, the partition 23 can be fixed by heat fitting. This arrangement ensures that the partition 23 and the inner wall of the sleeve 27 are sealed. After the oil-gas mixture is compressed by the pump body 21, it enters the first chamber 24. The partition 23 prevents the oil-gas mixture from directly entering the second chamber 25. Instead, it flows through the cooling channel and then into the second chamber 25.

[0054] In addition to being connected to the sleeve 27, the partition 23 can also be connected to the upper bearing 211 by screws or rivets. This also fixes the partition 23 inside the sleeve 27, ensuring that the first chamber 24 is separated from the second chamber 25 and that the oil-gas mixture does not directly enter the second chamber 25.

[0055] Please see Figure 3 and Figure 5 As shown, in one embodiment, the inner wall of the housing is provided with an air inlet 281 and an exhaust outlet 291, the air inlet channel 28 is connected to the air inlet 281, and the exhaust channel 29 is connected to the exhaust outlet 291.

[0056] In this embodiment, the oil-gas mixture is compressed by the pump body 21 and enters the first chamber 24. Then it enters the intake channel 28 through the intake port 281, then enters the exhaust channel 29 through the intake-exhaust connection channel 210, and finally enters the second chamber 25 through the exhaust port 291.

[0057] In the first embodiment of the cooling channel, an air inlet 281 is provided and serves as the air intake position of the air intake channel 28, and an exhaust port 291 is provided and serves as the exhaust position of the exhaust channel 29.

[0058] In the second embodiment of the cooling channel, multiple air inlets 281 and multiple exhaust ports 291 are provided. The multiple air inlets 281 and multiple exhaust ports 291 are arranged circumferentially on the inner wall of the sleeve 27 with the axis of the sleeve 27 as the center. The number of air inlets 281 and exhaust ports 291 is the same as the number of channel loops. That is, the air inlet end of each channel loop is connected to one air inlet 281, and the exhaust end of each channel loop is connected to one exhaust port 291.

[0059] In one embodiment, the partition 23 is provided with a connecting portion, which abuts against the air inlet 281, and the connecting portion is provided with an air vent 231, which connects to the first chamber 24.

[0060] In this embodiment, after the oil-gas mixture enters the first chamber 24, it is blocked by the partition 23. The oil-gas mixture is guided by the vent 231 and the exhaust port 291 of the connecting part and then enters the intake channel 28. Then it enters the exhaust channel 29 through the intake-exhaust connecting channel 210 and then enters the second chamber 25 through the exhaust port 291.

[0061] In the first embodiment of the cooling channel, a vent 231 is provided on the connecting part of the partition 23 and is connected to the air inlet 281.

[0062] In the second embodiment of the cooling channel, the connecting part on the partition 23 is provided with a plurality of vents 231. The plurality of vents 231 are distributed around the axis of the partition 23 in the circumference of the partition 23. The number of vents 231 is the same as the number of air inlets 281, that is, each vent 231 is connected to each air inlet 281.

[0063] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A compressor, comprising a sleeve, a motor, and a pump body, wherein the motor and pump body are disposed inside the sleeve, characterized in that, The sleeve has a first chamber and a second chamber spaced apart inside; the pump body is located in the first chamber, and the motor is located in the second chamber; The inner wall of the sleeve is provided with a cooling channel surrounding the outer ring of the motor. One end of the cooling channel is connected to the first chamber, and the other end of the cooling channel is connected to the second chamber. The cooling channel includes a connected air intake channel and an exhaust channel. The air intake channel is connected to a first chamber, and the exhaust channel is connected to a second chamber. The airflow path of the air intake channel extends spirally along the second chamber away from the first chamber, and the airflow path of the exhaust channel extends spirally along the first chamber away from the second chamber. The inner wall of the sleeve is provided with an inlet and outlet connecting channel, and the inlet channel and the outlet channel are respectively connected to the inlet and outlet connecting channel; the inlet and outlet connecting channel is arranged in a ring around the circumference of the sleeve and forms an annular space around the circumference of the sleeve.

2. The compressor according to claim 1, characterized in that: The cooling channel includes multiple channel loops, which are arranged circumferentially around the axis of the sleeve. Each channel loop includes a connected air intake channel and an exhaust channel. The air intake channel is connected to the first chamber, and the exhaust channel is connected to the second chamber.

3. The compressor according to claim 2, characterized in that: The air intake passage extends in a straight line along the second chamber away from the first chamber, and the exhaust passage extends in a straight line along the first chamber away from the second chamber.

4. The compressor according to claim 2, characterized in that: The intake and exhaust channels form a spiral structure that is less than one rotational circumference.

5. The compressor according to claim 1 or 2, characterized in that: The air intake channel and the exhaust channel are arranged at intervals along the thickness direction of the inner wall of the sleeve.

6. The compressor according to claim 1 or 2, characterized in that: The sleeve has a partition inside, which separates the first chamber and the second chamber inside the sleeve.

7. The compressor according to claim 6, characterized in that: The inner wall of the sleeve is provided with an air inlet and an air outlet; the air inlet channel is connected to the air inlet, and the air outlet channel is connected to the air outlet.

8. The compressor according to claim 7, characterized in that: The partition is provided with a connecting part, which abuts against the air inlet. The connecting part is provided with an air vent, which connects to the first chamber.

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