Compressor cylinder, compressor and air conditioning equipment

Abstract

The utility model provides a compressor air cylinder, a compressor and air conditioning equipment, the compressor air cylinder is provided with a slip sheet groove arranged on the inner side of the compressor air cylinder, and the slip sheet groove extends along the radial direction of the compressor air cylinder; the exhaust notch is formed in the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the projection area of the exhaust notch on the end face of the compressor cylinder is S1; the exhaust chamfer is arranged at the junction of the inner wall of the compressor air cylinder and the end face of the compressor air cylinder, the exhaust chamfer is located between the sliding piece groove and the exhaust notch, and the projection area of the exhaust chamfer on the end face of the compressor air cylinder is S2; the structure of the compressor cylinder meets the conditions that 3.5% < = (S1 + S2) / (pi * d * d / 4) < = 10%, 10 degrees < = theta < = 13.5 degrees, d is the diameter of an exhaust hole in a main bearing matched with the compressor cylinder, and theta is the exhaust angle, namely the included angle between the first connecting line and the second connecting line. The compressor solves the technical problem that the efficiency of a compressor in the prior art is difficult to further improve.

Description

TECHNICAL FIELD

[0001] The utility model relates to the compressor design field, specifically, relate to a kind of compressor cylinder, compressor and air conditioning equipment. BACKGROUND

[0002] Compressor is the important component in air conditioning equipment, and its design will directly affect the performance of air conditioning equipment, and the researchers in the field of compressor design are also committed to improving the efficiency of compressor, so that air conditioning equipment has high energy efficiency, and reduces the waste of electric energy.

[0003] In the related art, on the basis of the existing compressor structure design, the efficiency of the compressor has reached a bottleneck, and it is difficult to further improve the efficiency of the compressor.

[0004] Therefore, in the related art, there is a technical problem that the efficiency of the compressor is difficult to further improve, and currently no effective solution has been proposed for this technical problem. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a kind of compressor cylinder, compressor and air conditioning equipment, to solve the technical problem that the efficiency of the compressor is difficult to further improve in the related art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a compressor cylinder is provided, which is provided with: a sliding vane groove, arranged on the inner side of the compressor cylinder, and extending along the radial direction of the compressor cylinder; an exhaust cutout, arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the projection area of the exhaust cutout on the end face of the compressor cylinder is S1; an exhaust chamfer, arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and located between the sliding vane groove and the exhaust cutout, and the projection area of the exhaust chamfer on the end face of the compressor cylinder is S2; the structure of the compressor cylinder satisfies: 3.5%≤(S1+S2) / (π*d*d / 4)≤10%, 10°≤θ≤13.5°, wherein d is the diameter of the exhaust hole on the main bearing matched with the compressor cylinder, θ is the exhaust angle, the exhaust angle is the included angle between the first line and the second line, both the first line and the second line pass through the center of the compressor cylinder, the first line is the symmetry line of the sliding vane groove, and the second line passes through the midpoint of the exhaust cutout, and the midpoint of the exhaust cutout is the projection center of the exhaust hole on the end face of the compressor cylinder.

[0007] Further, the structure of the compressor cylinder satisfies: 0.5≤L-D / 2≤1, wherein L is the maximum distance between the edge of the exhaust cutout and the center of the compressor cylinder, and D is the inner diameter of the compressor cylinder.

[0008] Further, the inner diameter D of the compressor cylinder is in the range of 39mm≤D≤45mm.

[0009] Further, the width of the slide vane groove ranges from 2.5mm to 3.4mm along the circumference of the compressor cylinder.

[0010] Further, the compressor cylinder is a powder metallurgy part, or the compressor cylinder is a casting.

[0011] Further, the first end of the exhaust chamfer extends to the exhaust cutout, and the second end of the exhaust chamfer extends to the slide vane groove.

[0012] According to another aspect of the present application, a compressor is provided, which comprises the compressor cylinder.

[0013] Further, the compressor comprises a main bearing, which cooperates with the compressor cylinder, and the main bearing is provided with an exhaust hole on one side close to the compressor cylinder, and a part of the projection of the exhaust hole on the end face of the compressor cylinder falls into the slide vane groove of the compressor cylinder.

[0014] Further, along the circumference of the compressor cylinder, the width W of the overlapping part of the projection of the exhaust hole on the end face of the compressor cylinder and the slide vane groove satisfies: 0.15mm≤W≤0.4mm.

[0015] According to another aspect of the present application, an air conditioning device is provided, which comprises the compressor.

[0016] The compressor cylinder of the present application is provided with: a slide vane groove, which is arranged on the inner side of the compressor cylinder and extends along the radial direction of the compressor cylinder; an exhaust cutout, which is arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the projection area of the exhaust cutout on the end face of the compressor cylinder is S1; an exhaust chamfer, which is arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the exhaust chamfer is located between the slide vane groove and the exhaust cutout, and the projection area of the exhaust chamfer on the end face of the compressor cylinder is S2; and the structure of the compressor cylinder satisfies: 3.5%≤(S1+S2) / (π*d*d / 4)≤10%, 10°≤θ≤13.5°, wherein d is the diameter of the exhaust hole on the main bearing matched with the compressor cylinder. Figure 1 and Figure 2The dashed circle in the diagram represents the projection of the exhaust port onto the end face of the compressor cylinder. θ is the exhaust angle, which is the angle between the first and second connecting lines. Both the first and second connecting lines pass through the center of the compressor cylinder. The first connecting line is the line of symmetry of the vane groove, and the second connecting line passes through the midpoint of the exhaust cut, which is the center of the projection of the exhaust port onto the end face of the compressor cylinder. The compressor cylinder with the above-described structure has redesigned the dimensions of the exhaust cut and exhaust chamfer, and controlled the exhaust angle θ to ensure that 3.5% ≤ (S1+S2) / (π*d*d / 4) ≤ 10%, and 10° ≤ θ ≤ 13.5°. Compared with compressors in related technologies, the exhaust cut and exhaust chamfer of the compressor cylinder in this embodiment are within a smaller size range, and the exhaust angle θ is also within a smaller range. Because the exhaust cut and exhaust chamfer are designed to be small, the compressor can be guaranteed to have a smaller clearance volume. Because the exhaust angle θ is designed to be relatively small, the compressor can discharge more working fluid at the end of the compression stroke, thereby improving the utilization rate of the compression chamber. The compressor cylinder of this embodiment, by designing a smaller exhaust cut and chamfer, combined with a smaller exhaust angle θ, can reduce the compressor clearance volume, improve the utilization rate of the compression chamber, and thus further improve compressor efficiency, solving the technical problem in related technologies where compressor efficiency is difficult to further improve. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the compressor cylinder of this utility model;

[0019] Figure 2 for Figure 1 A magnified structural diagram of a portion of the structure (some structural parameters are marked in the diagram);

[0020] Figure 3 for Figure 1 A magnified structural diagram of a portion of the structure (some structural parameters are marked in the diagram);

[0021] Figure 4 Comparison of compressor operating data for BES type compressors when using different exhaust angles and projected area ratios.

[0022] The above figures include the following reference numerals:

[0023] 1. Sliding vane groove; 2. Exhaust cut; 3. Exhaust chamfer. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] Please refer to Figures 1 to 3 , in order to achieve the above object, the embodiment of the present application provides a compressor cylinder, which is provided with: a sliding vane groove 1, which is arranged on the inner side of the compressor cylinder and extends along the radial direction of the compressor cylinder; an exhaust cutout 2, which is arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the projection area of the exhaust cutout 2 on the end face of the compressor cylinder is S1; an exhaust chamfer 3, which is arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the exhaust chamfer 3 is located between the sliding vane groove 1 and the exhaust cutout 2, and the projection area of the exhaust chamfer 3 on the end face of the compressor cylinder is S2; the structure of the compressor cylinder satisfies: 3.5%≤(S1+S2) / (π*d*d / 4)≤10%, 10°≤θ≤13.5°, wherein d is the diameter of the exhaust hole on the main bearing matched with the compressor cylinder, such as Figure 1 and Figure 2 in dashed circles, which represents the projection of the exhaust hole on the end face of the compressor cylinder, θ is the exhaust angle, and the exhaust angle is the included angle between the first line and the second line, both of which pass through the center of the compressor cylinder, the first line is the line of symmetry of the sliding vane groove 1, and the second line passes through the midpoint of the exhaust cutout 2, which is the projection center of the exhaust hole on the end face of the compressor cylinder.

[0026] The compressor cylinder with the above structure is designed by redesigning the sizes of the exhaust cutout 2 and the exhaust chamfer 3 of the compressor cylinder and by controlling the exhaust angle θ to satisfy 3.5%≤(S1+S2) / (π*d*d / 4)≤10%, 10°≤θ≤13.5°. Compared with the compressor in the related art, the exhaust cutout 2 and the exhaust chamfer 3 of the compressor cylinder in the embodiment of the present application are in a smaller size range, and the exhaust angle θ is in a smaller range. Since the sizes of the exhaust cutout 2 and the exhaust chamfer 3 are designed to be small, the compressor can have a smaller residual volume. Since the exhaust angle θ is designed to be small, the compressor can discharge more working medium at the end of the compression stroke, thereby improving the utilization rate of the compression chamber. The compressor cylinder in the embodiment of the present application can reduce the residual volume of the compressor and improve the utilization rate of the compression chamber by designing a smaller exhaust cutout 2 and exhaust chamfer 3 and cooperating with a smaller exhaust angle θ, thereby further improving the efficiency of the compressor and solving the technical problem that the efficiency of the compressor in the related art is difficult to be further improved.

[0027] As described above, the compressor cylinder of the embodiment of the utility model designs the smaller exhaust cutout 2 and exhaust chamfer 3, and designs the smaller exhaust angle θ, at the same time, further limits the lower limit of the size of the exhaust cutout 2 and exhaust chamfer 3 and the lower limit of the exhaust angle θ, avoids the increase of exhaust resistance due to the design of too small exhaust cutout 2, exhaust chamfer 3 and exhaust angle θ, thereby reducing the efficiency of the compressor.

[0028] Compared with the embodiment of the utility model, the exhaust cutout of the compressor cylinder in the related art is usually larger, which leads to larger residual cavity during compression, thereby reducing the volumetric efficiency of the compressor. For the scheme of using smaller exhaust cutout, it usually involves larger exhaust angle to ensure smooth exhaust. Specifically, based on the general design idea in the field of compressor design, when smaller exhaust cutout and smaller exhaust angle are used, the exhaust resistance will increase, and the performance may decrease, so there is no scheme of smaller exhaust cutout 2 range and smaller exhaust angle θ range in the related art.

[0029] Figure 4 For BES type compressor, when different exhaust angles and projection area ratios ((S1+S2) / (π*d*d / 4)) are used, the compressor working condition data are compared, as shown in Figure 4 From Figure 4 It can be seen that within a certain range, smaller exhaust angle and smaller projection area ratio can slightly improve performance. From the data, the refrigerating capacity and performance of the scheme with an exhaust angle of 13° and a projection area ratio of 7.5% are the best.

[0030] For the shape of the exhaust cutout 2, it is not limited here, and the required shape can be designed according to the requirements, for example, the cutout in the current industry is cut obliquely by a drill bit, and the shape is a local oval shape, and the edge shape of the exhaust cutout 2 is arc-shaped. For the irregularly shaped exhaust cutout 2, it is difficult to determine the center, and in the embodiment, the midpoint of the exhaust cutout 2 is introduced to accurately limit the position of the exhaust cutout 2, and the midpoint of the exhaust cutout 2 defined in the embodiment is the midpoint of the maximum length of the exhaust cutout 2 along the circumferential direction of the compressor cylinder, for example, along the circumferential direction of the compressor cylinder, the two points on the exhaust cutout 2 farthest apart can be connected into a line segment, and the midpoint of the exhaust cutout 2 is the midpoint of the line segment. In actual implementation, in order to facilitate the determination of whether the setting position of the exhaust cutout 2 is qualified, the method of designing a gauge can be used to test it.

[0031] In a preferred embodiment, the structure of the compressor cylinder satisfies: 0.5≤L-D / 2≤1, wherein L is the maximum distance between the edge of the exhaust cutout 2 and the center of the compressor cylinder, and D is the inner diameter of the compressor cylinder.

[0032] In the embodiment, the L-D / 2 is further designed. If the L-D / 2 is large, the exhaust cutout 2 is large, which causes the compressor to have a large clearance volume, and thus the refrigerating capacity is reduced. If the L-D / 2 is small, the exhaust cutout 2 is small, and the exhaust resistance is increased due to the too small exhaust cutout 2, which is not conducive to the compressor efficiency.

[0033] In a specific embodiment, the inner diameter D of the compressor cylinder is 39mm≤D≤45mm. In the embodiment, the inner diameter D of the compressor cylinder is designed to be 39mm≤D≤45mm. The compressor cylinder with the inner diameter in the range has appropriate cylinder height and eccentricity, which is combined with the design of the exhaust cutout 2, the exhaust chamfer 3 and the exhaust angle θ, and the compressor has higher efficiency.

[0034] Preferably, the width of the slide groove 1 is 2.5mm to 3.4mm along the circumference of the compressor cylinder.

[0035] For the width of the slide groove 1 of the compressor cylinder, the smaller the size is, the better the compression efficiency is. However, if the width of the slide groove 1 is too small, the machining is difficult, the tool needs to be very thin, and the service life is difficult to guarantee. If the width of the slide groove 2 is too large, the effective volume of the compression chamber is reduced, which is not conducive to the improvement of the compressor efficiency. In the embodiment, the width of the slide groove 1 is designed to be 2.5mm to 3.4mm, which can avoid the problems caused by the too large or too small width of the slide groove 1.

[0036] In the specific implementation, the compressor cylinder can be processed by different processes, for example, the compressor cylinder is a powder metallurgy part, or the compressor cylinder is a casting. In a specific embodiment, the compressor cylinder is a powder metallurgy material.

[0037] Specifically, the first end of the exhaust chamfer 3 extends to the exhaust cutout 2, and the second end of the exhaust chamfer 3 extends to the slide groove 1.

[0038] In addition, the embodiment of the utility model also provides a compressor, the compressor includes the compressor cylinder, and the compressor cylinder is the compressor cylinder.

[0039] Specifically, the compressor includes a main bearing, the main bearing is matched with the compressor cylinder, and the main bearing is provided with an exhaust hole on one side close to the compressor cylinder. A part of the projection of the exhaust hole on the end surface of the compressor cylinder falls into the slide groove 1 of the compressor cylinder.

[0040] In the embodiment, a part of the exhaust hole falls into the slide groove 1, so that the compressor has a small exhaust angle, and the utilization rate of the compression chamber is improved.

[0041] The width W of the overlapping part of the projection of the exhaust hole on the end face of the compressor cylinder and the vane groove 1 satisfies: 0.15mm≤W≤0.4mm along the circumference of the compressor cylinder.

[0042] Specifically, if the overlapping part width W is too large, the exhaust hole will be blocked by the vane too much, resulting in large compressor exhaust resistance and increased power consumption. If the overlapping part width W is too small, the exhaust angle needs to be increased, which will result in an increase in the clearance volume, which is not conducive to the efficiency of the compressor.

[0043] The embodiment of the utility model further provides a kind of air conditioning equipment to improve the energy efficiency of air conditioning equipment, and the air conditioning equipment includes the compressor described above.

[0044] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects:

[0045] The compressor cylinder of the utility model embodiment is provided with: vane groove 1, which is arranged on the inner side of the compressor cylinder, and the vane groove 1 is arranged along the radial direction of the compressor cylinder; exhaust cutout 2, which is arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the projection area of the exhaust cutout 2 on the end face of the compressor cylinder is S1; exhaust chamfer 3, which is arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the exhaust chamfer 3 is located between the vane groove 1 and the exhaust cutout 2, and the projection area of the exhaust chamfer 3 on the end face of the compressor cylinder is S2; the structure of the compressor cylinder satisfies: 3.5%≤(S1+S2) / (π*d*d / 4)≤10%, 10°≤θ≤13.5°, wherein d is the diameter of the exhaust hole on the main bearing matched with the compressor cylinder, such as Figure 1 and Figure 2The dashed circle in the figure represents the projection of the exhaust hole on the end face of the compressor cylinder, and theta is the exhaust angle, which is the included angle between the first line and the second line, both of which pass through the center of the compressor cylinder, the first line is the symmetry line of the sliding vane groove 1, and the second line passes through the midpoint of the exhaust notch 2, which is the projection center of the exhaust hole on the end face of the compressor cylinder. The compressor cylinder with the above structure is designed, the sizes of the exhaust notch 2 and the exhaust chamfer 3 of the compressor cylinder are redesigned, and the exhaust angle theta is controlled, so that 3.5% <= (S1+S2) / (pi*d*d / 4) <= 10%, 10 DEG <= theta <= 13.5 DEG. Compared with the compressor in the related art, the exhaust notch 2 and the exhaust chamfer 3 of the compressor cylinder in the embodiment of the utility model are in a smaller size range, and the exhaust angle theta is in a smaller range. Since the sizes of the exhaust notch 2 and the exhaust chamfer 3 are designed to be small, the compressor can have a smaller residual volume. Since the exhaust angle theta is designed to be small, the compressor can discharge more working medium at the end of the compression stroke, thereby improving the utilization rate of the compression chamber. The compressor cylinder in the embodiment of the utility model can reduce the residual volume of the compressor and improve the utilization rate of the compression chamber by designing a smaller exhaust notch 2 and exhaust chamfer 3 and cooperating with a smaller exhaust angle theta, thereby further improving the efficiency of the compressor and solving the technical problem that the efficiency of the compressor in the related art is difficult to further improve.

[0046] For the purposes of this description, spatially relative terms, such as "above", "below", "up", "down", "top", "bottom", "side" and the like, are used to describe the relative position of one element to another element as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, then a dependent element described as "above" or "up" the other element would be oriented "below" or "down" relative to the other element. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", "third", etc. are used herein to describe various elements, regions, layers, sections, etc. and are not intended to be a source of limitation. The terms "first", "second", "third", etc. are only used to distinguish one element, region, layer, section, etc. from another element, region, layer, section, etc.

[0047] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a reference to the presence of a feature, step, operation, device, component, and / or combinations thereof.

[0048] It should be noted that the terms "first", "second", and the like, used in the description and in the claims of the present application as well as above-mentioned figures are intended to distinguish similar objects and not to imply a special order or sequence. It is to be understood that data thus designated can be interchanged, where appropriate, so that the embodiments of the present application described herein can be carried out in other than the order shown or described herein. Furthermore, the terms "comprising", "having", and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or apparatus that comprises a list of steps or units not necessarily limited to those explicitly listed, but can include other steps or units not expressly listed or inherent to such process, method, product, or apparatus.

[0049] The preferred embodiments of the present application are described above only, and are not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A compressor cylinder characterized by, The compressor cylinder is provided with: A sliding vane groove (1) is arranged on the inner side of the compressor cylinder, and the sliding vane groove (1) is arranged along the radial direction of the compressor cylinder; An exhaust cutout (2) is arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, and the projection area of the exhaust cutout (2) on the end face of the compressor cylinder is S1; An exhaust chamfer (3) is arranged at the junction of the inner wall of the compressor cylinder and the end face of the compressor cylinder, the exhaust chamfer (3) is located between the sliding vane groove (1) and the exhaust cutout (2), and the projection area of the exhaust chamfer (3) on the end face of the compressor cylinder is S2; The structure of the compressor cylinder satisfies: 3.5%≤(S1+S2) / (π*d*d / 4)≤10%, 10°≤θ≤13.5°, wherein d is the diameter of the exhaust hole on the main bearing matched with the compressor cylinder, θ is the exhaust angle, the exhaust angle is the included angle between the first line and the second line, the first line and the second line both pass through the center of the compressor cylinder, the first line is the symmetry line of the sliding vane groove (1), and the second line passes through the midpoint of the exhaust cutout (2), and the midpoint of the exhaust cutout (2) is the projection center of the exhaust hole on the end face of the compressor cylinder.

2. The compressor cylinder of claim 1, wherein, The structure of the compressor cylinder satisfies: 0.5≤L-D / 2≤1, wherein L is the maximum distance between the edge of the exhaust cutout (2) and the center of the compressor cylinder, and D is the inner diameter of the compressor cylinder.

3. The compressor cylinder of claim 2, wherein, The inner diameter D of the compressor cylinder ranges from 39mm to 45mm.

4. The compressor cylinder of claim 1, wherein, Along the circumferential direction of the compressor cylinder, the width of the sliding vane groove (1) ranges from 2.5mm to 3.4mm.

5. The compressor cylinder of any one of claims 1 to 4, wherein, The compressor cylinder is a powder metallurgy part, or the compressor cylinder is a casting.

6. The compressor cylinder of any one of claims 1 to 4, wherein, The first end of the exhaust chamfer (3) extends to the exhaust cutout (2), and the second end of the exhaust chamfer (3) extends to the sliding vane groove (1).

7. A compressor characterized by, The compressor includes a compressor cylinder, and the compressor cylinder is the compressor cylinder according to any one of claims 1 to 6.

8. The compressor of claim 7, wherein, The compressor includes a main bearing matched with the compressor cylinder, and the main bearing is provided with an exhaust hole on the side close to the compressor cylinder, and a part of the projection of the exhaust hole on the end face of the compressor cylinder falls into the sliding vane groove (1) of the compressor cylinder.

9. The compressor of claim 8, wherein, Along the circumferential direction of the compressor cylinder, the width W of the overlapping part of the projection of the exhaust hole on the end face of the compressor cylinder and the sliding vane groove (1) satisfies: 0.15mm≤W≤0.4mm.

10. An air conditioning apparatus characterized by comprising: The air conditioning equipment includes the compressor according to any one of claims 7 to 9.

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