Compressor exhaust structure, pump body assembly of compressor and compressor

Abstract

The utility model discloses a compressor exhaust structure, a pump body assembly of a compressor and the compressor. The compressor exhaust structure comprises an air cylinder, a first end cover, a second end cover and a first exhaust channel. The first end cover is arranged at the first axial end of the air cylinder. The second end cover is arranged at the second axial end of the air cylinder. The first exhaust channel sequentially penetrates through the first end cover, the cylinder wall and the second end cover; the center line of the first exhaust channel is a straight line or a curve. The center line of the first exhaust channel and the center axis of the compressor are arranged in different planes. An included angle alpha is formed between the extending direction of the first exhaust channel and the axial direction of the compressor, and alpha is larger than or equal to 10 degrees and smaller than or equal to 45 degrees. By arranging the first exhaust channel, the exhaust smoothness of the air cylinder is improved, so that the exhaust loss is reduced, the compressor efficiency is improved, the inclination angle ensures that the first exhaust channel can be applied to related compressor products, and the compressor has good process feasibility.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a compressor exhaust structure, a compressor pump assembly, and a compressor. Background Art

[0002] In the prior art, to facilitate oil return in the compressor, exhaust gas from the cylinder first enters the lower muffler, then passes sequentially through the inclined holes in the lower end cover, the straight holes in the cylinder, and the inclined holes in the upper end cover, into the interior of the compressor casing. This combination of inclined and straight holes can increase airflow resistance and exhaust losses, thereby reducing compressor efficiency. Furthermore, exhaust gas from the upper end cover enters the interior of the compressor casing directly, rather than the upper muffler, thus somewhat impacting noise reduction.

[0003] It should be noted that the information disclosed in the background technology section of this application is intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Utility Model Content

[0004] The purpose of the present application is to provide a compressor exhaust structure, a compressor pump body assembly and a compressor, so as to solve the problems of poor exhaust, large exhaust loss and poor noise reduction and silencing in the existing compressor exhaust structure.

[0005] To achieve the above-mentioned objectives, the present application provides a compressor exhaust structure, which includes: a cylinder, a first end cover, a second end cover and a first exhaust channel; the first end cover is arranged at the axial first end of the cylinder; the second end cover is arranged at the axial second end of the cylinder; the first exhaust channel passes through the first end cover, the cylinder wall of the cylinder and the second end cover in sequence; the center line of the first exhaust channel is a straight line or a curve; the center line of the first exhaust channel is arranged in a non-planar manner with the central axis of the compressor; the extension direction of the first exhaust channel forms an angle α with the axial direction of the compressor, and 10°≤α≤45°.

[0006] Furthermore, the compressor exhaust structure further includes: a first muffler and a second muffler; the first muffler is disposed on the first end cover; the second muffler is disposed on the second end cover; the first muffler and the first end cover define a first muffler cavity, the first muffler cavity being in communication with the inner cavity of the cylinder; the second muffler cavity and the second end cover define a second muffler cavity; the second muffler is provided with one or more vent holes in communication with the second muffler cavity;

[0007] The first exhaust channel has a first port and a second port relative to each other along its center line direction; the first port is arranged at the first end cover, located in the first silencing chamber, and communicated with the first silencing chamber; the second port is arranged at the second end cover, located in the second silencing chamber, and communicated with the second silencing chamber.

[0008] Further, the second port is closer to the central axis of the compressor than the first port.

[0009] Furthermore, the height of the cylinder is H, the cylinder diameter of the cylinder is D, and 1.59≤D / H≤2.94.

[0010] Furthermore, D is 52.979 mm, and 8.0 mm ≤ H ≤ 33.3 mm.

[0011] Further, D / H=2.22, and / or α is 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°.

[0012] Furthermore, the first exhaust passage comprises: a first through hole provided at the first end cover; an exhaust through hole provided in the cylinder wall; and a second through hole provided at the second end cover; the first through hole, the exhaust through hole and the second through hole are sequentially coaxially connected;

[0013] The cross-sectional size of the first through hole is the same as the cross-sectional size of the second through hole, and the cross-sectional size of the exhaust through hole is greater than or equal to the cross-sectional size of the first through hole and the second through hole.

[0014] Furthermore, the compressor exhaust structure further includes: one or more second exhaust passages, the second exhaust passages sequentially passing through the first end cover, the cylinder wall of the cylinder, and the second end cover, the center line of the second exhaust passage being a straight line and parallel to the central axis of the compressor;

[0015] And / or, there are multiple first exhaust channels, and the multiple first exhaust channels are evenly or unevenly distributed along the circumferential direction around the central axis of the compressor.

[0016] Based on the above-mentioned compressor exhaust structure, the present application also provides a compressor pump body assembly, which includes the above-mentioned compressor exhaust structure.

[0017] Based on the pump body assembly of the above-mentioned compressor, the present application also provides a compressor, which includes a compressor housing and the pump body assembly of the above-mentioned compressor, and the pump body assembly is arranged in the compressor housing.

[0018] Furthermore, the compressor is a rolling rotor compressor.

[0019] The beneficial effects of the above-mentioned compressor exhaust structure are: by setting the first exhaust channel as an inclined channel, the resistance of the gas compressed and discharged by the cylinder when passing through the first exhaust channel will be smaller, and the exhaust will be smoother, thereby reducing exhaust loss and improving compressor efficiency; at the same time, by setting the inclination angle α of the first exhaust channel to 10°≤α≤45°, this inclined channel can be applied to related compressor products, eliminating structural limitations, so that the inclined channel has good process feasibility, and can solve the problem of poor exhaust, thereby obtaining the desired effect of this application.

[0020] Since the compressor and the compressor pump body assembly provided in the present application belong to the same inventive concept as the compressor exhaust structure provided in the present application, the compressor and the compressor pump body assembly provided in the present application at least have all the beneficial effects of the compressor exhaust structure provided in the present application. For details, please refer to the relevant description of the beneficial effects of the compressor exhaust structure provided in the present application in the above text. Therefore, the beneficial effects of the compressor and the compressor pump body assembly provided in the present application will not be described one by one here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Those skilled in the art will appreciate that the accompanying drawings are provided for a better understanding of the present application and do not constitute any limitation on the scope of the present application.

[0022] Figure 1 This is a schematic structural diagram of the pump assembly of the compressor in an embodiment of the present application;

[0023] Figure 2 This is a schematic cross-sectional view of the pump assembly along the first exhaust channel in an embodiment of the present application;

[0024] Figure 3 This is a schematic structural diagram of an embodiment of the present application in which the extending direction of the first exhaust channel is arranged at an angle to the axial direction of the compressor;

[0025] Figure 4 This is a top view of the pump assembly in the embodiment of the present application, wherein the second muffler is omitted;

[0026] Figure 5 This is a bottom view of the pump assembly in the embodiment of the present application, wherein the first muffler is omitted;

[0027] Figure 6 This is a front view of the cylinder in the embodiment of the present application;

[0028] Figure 7 This is a top view of the cylinder in the embodiment of the present application.

[0029] in, Figure 1-Figure 7In the figure: 100-pump body assembly; 10-cylinder; 11-exhaust through-hole; 20-first end cover; 21-first through-hole; 30-second end cover; 31-second through-hole; 40-first muffler; 41-first muffler chamber; 50-second muffler; 51-second muffler chamber; 52-air vent; 60-intake connecting pipe; 110-first exhaust channel; 111-centerline of the first exhaust channel; 112-first port; 113-second port; 120-center axis of the compressor; 130-second exhaust channel; α-angle between the extension direction of the first exhaust channel and the axial direction of the compressor; D-cylinder diameter; H-height of the cylinder. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Those skilled in the art may make various changes, modifications, substitutions, and variations to these embodiments without departing from the principles and purpose of the present application. The scope of the present application is defined by the claims and their equivalents.

[0031] As used in this application, the singular forms "a", "an", and "the" include plural objects, the term "or" is generally used to include the meaning of "and / or", and the term "plurality" is generally used to include the meaning of "two or more". In addition, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or at least two of the features. In addition, as used in this application, an element is provided on another element, which generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the connection, coupling, cooperation or transmission between the two elements can be direct or indirect through an intermediate element, and is not to be understood as indicating or implying the spatial position relationship between the two elements, that is, one element can be in any orientation such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0032] In the description of this application, it should be understood that the terms "center", "upper", "lower", "inner", "outer", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0033] The following describes a compressor exhaust structure according to an embodiment of the present application with reference to the accompanying drawings. It should be noted that the compressor exhaust structure according to an embodiment of the present application is not limited to the rotary compressor of the structure shown in the drawings, but can also be used in compressors of other structures, which is easy to understand for those skilled in the art.

[0034] Reference Figures 1 to 7 As shown, according to an embodiment of the present application, a compressor is provided, which includes: a pump body assembly 100, and the pump body assembly 100 is arranged in the compressor housing. The present application aims to improve the pump body assembly 100, specifically to optimize the exhaust structure in the pump body assembly 100. Specifically, for the pump body assembly 100, it includes the compressor exhaust structure provided by the embodiment of the present application, and the compressor exhaust structure may include: a cylinder 10, a first end cover 20 and a second end cover 30. The first end cover 20 is arranged at the axial first end of the cylinder 10, and the first end is, for example, the lower end. The second end cover 30 is arranged at the axial second end of the cylinder 10, and the second end is, for example, the upper end.

[0035] The compressor exhaust structure also includes a first exhaust passage 110, which sequentially passes through the first end cover 20, the cylinder wall of the cylinder 10, and the second end cover 30. More specifically, an exhaust through-hole 11 is defined in the cylinder wall of the cylinder 10, a first through-hole 21 is defined in the first end cover 20, and a second through-hole 31 is defined in the second end cover 30. The first through-hole 21, the exhaust through-hole 11, and the second through-hole 31 are coaxially connected to form the first exhaust passage 110.

[0036] Although a straight first exhaust channel 110 is described in this embodiment, the first exhaust channel 110 may also be a slightly curved channel, and the curved channel is mainly in the shape of a circular arc. Therefore, the center line 111 of the first exhaust channel 110 may be a straight line or a curve. Regardless of whether it is a curve or a straight line, the center line 111 of the first exhaust channel 110 is arranged in a different plane from the central axis 120 of the compressor, and the extension direction of the first exhaust channel 110 (center line 111) is at an angle α with the axial direction of the compressor, and α is not equal to 90°. Here, if the center line 111 of the first exhaust channel 110 is a curve, the maximum inclination angle of the tangent at a certain point on the curve is defined as the angle α between the extension direction of the first exhaust channel 110 and the axial direction of the compressor.

[0037] Key references Figure 2 and Figure 3 The gas exhausted from the cylinder 10 passes through the first through hole 21, the exhaust through hole 11, and the second through hole 31 in sequence, and is finally exhausted from the second through hole 31. It can be seen that when the gas passes through the first exhaust channel 110, the exhaust distance is shortened, the airflow resistance is reduced, and the inclination at a certain angle makes the airflow smoother, thereby reducing exhaust loss and improving compressor efficiency.

[0038] Considering that some compressor products may not be able to use this inclined first exhaust channel 110 due to size reasons, it is necessary to limit the inclination angle α of the first exhaust channel 110, and 10°≤α≤45°. Optionally, α is 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°. By controlling the inclination angle α, the present application can enable this inclined exhaust channel to be applied to related compressor products, eliminating structural limitations, making the inclined channel have good process feasibility, and solving the problem of poor exhaust, thereby achieving the desired technical effect.

[0039] Reference Figure 1 and Figure 2 As shown, the compressor exhaust structure may further include: a first muffler 40 and a second muffler 50. The first muffler 40 is arranged on the first end cover 20, and the first muffler 40 and the first end cover 20 define a first muffler chamber 41, and the first muffler chamber 41 is connected to the inner cavity of the cylinder 10. The second muffler 50 is arranged on the second end cover 30, and the second muffler 50 and the second end cover 30 define a second muffler chamber 51. The second muffler 50 is also provided with a vent hole 52 connected to the second muffler chamber 51. There are one or more vent holes 52. For example, in this embodiment, there are two vent holes 52. In practice, the edge of the second muffler 50 is fixed to the second end cover 30 by screws, and the central part of the second muffler 50 is concave inwardly away from the cylinder 10 to form a muffler chamber, and the vent hole 52 is provided at the position of the muffler chamber.

[0040] In addition, the first exhaust channel 110 has a first port 112 and a second port 113 opposite to each other along its center line 111; the first port 112 is provided at the first end cover 20 and is located in the first muffler chamber 41 and communicates with the first muffler chamber 41; the second port 113 is provided at the second end cover 30 and is located in the second muffler chamber 51 and communicates with the second muffler chamber 51. Figure 1As shown by the middle arrow, the gas exhausted from the inner cavity of cylinder 10 first enters the first muffler chamber 41, then passes through the first through-hole 21, the exhaust through-hole 11, and the second through-hole 31 to enter the second muffler chamber 51. Finally, it is discharged into the interior space of the compressor housing through the vent 52 of the second muffler chamber 51. This ensures that all the gas exhausted from cylinder 10 enters the muffler chamber, thereby achieving a better noise reduction effect.

[0041] To ensure that as much exhaust gas as possible from the second end cover 30 enters the second muffler chamber 51, the second port 113 is preferably closer to the compressor's central axis 120 than the first port 112. That is, the second port 113 is closer to the compressor's central axis 120 than the first port 112. This allows the second port 113 to be closer to the second muffler chamber 51 and covered by it. Therefore, from the first end cover 20 toward the second end cover 30, the first exhaust passage 110 approaches the compressor's central axis 120, ensuring that gas enters the second muffler chamber 51.

[0042] In addition, the higher the height of the cylinder 10 is, the larger the inclination angle of the first exhaust passage 110 relative to the axial direction can be, so that the exhaust can be smoother and it is more conducive for the second port 113 to enter the second muffler chamber 51.

[0043] Furthermore, it has been found through research that the inclined first exhaust passage 110 is more suitable for use on specific compressor products, so as to better solve the problems of poor exhaust and poor noise reduction effect of these compressor products. Figure 6 and Figure 7 As shown, the height of the cylinder 10 is H, the cylinder diameter (i.e., inner diameter) of the cylinder 10 is D, and 1.59≤D / H≤2.94. Therefore, the first exhaust passage 110 can be used within this range of cylinder diameter to height ratio to achieve a good effect and good process feasibility. Optionally, the value of D / H can be 1.59, 2.22, or 2.94, and more preferably, D / H=2.22.

[0044] Furthermore, 8.0mm≤H≤33.3mm, and D=52.979mm, correspondingly matching 10°≤α<45°. Optionally, the height H of the cylinder 10 can be 8.0mm, 23.8mm, or 33.3mm. Therefore, for compressors with this cylinder diameter and height, providing the first exhaust passage 110 improves the compressor's exhaust performance and noise reduction, thereby increasing compressor efficiency.

[0045] Furthermore, the cross-sectional dimensions of the first through hole 21 on the first end cover 20 and the cross-sectional dimensions of the second through hole 31 on the second end cover 30 may be the same or different, preferably the same. The cross-sectional dimensions of the exhaust through hole 11 on the cylinder 10 are generally greater than or equal to the cross-sectional dimensions of the first through hole 21 and the second through hole 31. Generally, the cylinder wall has sufficient size to set the exhaust through hole 11, so it can be set larger. Therefore, preferably, the cross-sectional dimensions of the exhaust through hole 11 on the cylinder 10 are greater than the cross-sectional dimensions of the first through hole 21 and the second through hole 31. Such a setting can also ensure the strength of the end cover. Optionally, the first through hole 21 and the second through hole 31 are both circular holes with a diameter of 8.0 mm. Optionally, the exhaust through hole 11 is also a circular hole with a diameter of 10 mm. It should be known that the sizes of the first through hole 21, the second through hole 31 and the exhaust through hole 11 can be adjusted and changed according to actual needs.

[0046] The cross-sectional shape of the first exhaust passage 110 is not limited. Generally, for ease of processing, it is a circular passage. There can be one or more first exhaust passages 110, and the plurality of first exhaust passages 110 can be evenly or unevenly distributed circumferentially around the central axis 110 of the compressor.

[0047] Key references Figure 4 and Figure 5 Optionally, the compressor exhaust structure also includes one or more second exhaust passages 130. These second exhaust passages 130 sequentially extend through the first end cover 20, the cylinder wall of the cylinder 10, and the second end cover 30. The centerline of each second exhaust passage 130 is a straight line parallel to the central axis 120 of the compressor. In other words, the second exhaust passage 130 is a straight channel with a straight centerline. Adding these second exhaust passages 130 increases exhaust efficiency, improving the operating efficiency and performance of the compressor.

[0048] Similarly, through holes are provided on the first end cover 20, the cylinder wall and the second end cover 30, and these through holes are coaxially connected to form a second exhaust passage 130. The gas discharged from the second exhaust passage 130 directly enters the inner space of the compressor housing.

[0049] In addition, to connect the cylinder 10 and the liquid reservoir, an air intake port is provided on the cylinder 10, which is connected to an air intake connecting pipe 60. The air intake connecting pipe 60 further passes through the compressor housing and is fixed to one end of an elbow, while the other end of the elbow is fixed to the liquid reservoir. Since the other components and operations of the compressor according to the embodiments of the present application are well known to those skilled in the art, they will not be described in detail here.

[0050] The above-described embodiments are merely preferred implementations of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes or modifications made in accordance with the structures, features, and principles described in the scope of the present application should fall within the scope of the present application.

Claims

1. A compressor exhaust structure, characterized in that: include: A cylinder, a first end cover, a second end cover and a first exhaust passage; the first end cover is arranged at the first axial end of the cylinder; the second end cover is arranged at the second axial end of the cylinder; the first exhaust passage sequentially passes through the first end cover, the cylinder wall of the cylinder and the second end cover; the center line of the first exhaust passage is a straight line or a curve; the center line of the first exhaust passage is arranged in a different plane from the central axis of the compressor; the extension direction of the first exhaust passage forms an angle α with the axial direction of the compressor, and 10°≤α≤45°.

2. The compressor exhaust structure according to claim 1, wherein: Also includes: A first muffler and a second muffler; the first muffler is arranged on the first end cover; the second muffler is arranged on the second end cover; The first muffler and the first end cover define a first muffler cavity, which is in communication with the inner cavity of the cylinder; the second muffler and the second end cover define a second muffler cavity; the second muffler is provided with one or more vent holes in communication with the second muffler cavity; The first exhaust channel has a first port and a second port relative to each other along its center line direction; the first port is arranged at the first end cover, located in the first silencing chamber, and communicated with the first silencing chamber; the second port is arranged at the second end cover, located in the second silencing chamber, and communicated with the second silencing chamber.

3. The compressor exhaust structure according to claim 2, wherein: The second port is closer to a central axis of the compressor than the first port.

4. The compressor exhaust structure according to any one of claims 1 to 3, characterized in that: The height of the cylinder is H, the cylinder diameter of the cylinder is D, and 1.59≤D / H≤2.

94.

5. The compressor exhaust structure according to claim 4, characterized in that: D is 52.979 mm, and 8.0 mm ≤ H ≤ 33.3 mm.

6. The compressor exhaust structure according to claim 4, wherein: D / H=2.22, and / or α is 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°.

7. The compressor exhaust structure according to any one of claims 1 to 3, characterized in that: The first exhaust passage comprises: a first through hole provided at the first end cover; an exhaust through hole provided in the cylinder wall; and a second through hole provided at the second end cover; the first through hole, the exhaust through hole and the second through hole are sequentially coaxially connected; The cross-sectional size of the first through hole is the same as the cross-sectional size of the second through hole, and the cross-sectional size of the exhaust through hole is greater than or equal to the cross-sectional size of the first through hole and the second through hole.

8. The compressor exhaust structure according to any one of claims 1 to 3, characterized in that: The compressor further comprises: one or more second exhaust passages, wherein the second exhaust passages sequentially pass through the first end cover, the cylinder wall of the cylinder, and the second end cover, and the center line of the second exhaust passage is a straight line and parallel to the central axis of the compressor; And / or, there are multiple first exhaust channels, and the multiple first exhaust channels are evenly or unevenly distributed along the circumferential direction around the central axis of the compressor.

9. A pump assembly for a compressor, characterized in that: The invention comprises the compressor exhaust structure according to any one of claims 1 to 8.

10. A compressor, characterized in that: The invention comprises a compressor housing and a pump body assembly of the compressor according to claim 9, wherein the pump body assembly is arranged in the compressor housing.

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