Compressors and vehicles

Abstract

A compressor and a vehicle are provided. The compressor includes: a housing body; a compression unit in the housing body; and an end cap at one end of the housing body, with a discharge chamber defined between the end cap and the compression unit. The end cap has a mounting channel on its outer side for securing the compressor, and a wall between the mounting channel and the discharge chamber protrudes into the discharge chamber. A compressor according to an embodiment has reduced discharge pulses.

Description

Technical Field

[0001] The present invention relates to a compressor, and more particularly to a scroll compressor for mounting to a vehicle. Background Art

[0002] Electric-driven scroll compressors are now common in vehicles. To ensure stable installation, these compressors typically utilize a prescribed mounting method, such as the VDA (German Association of the Automotive Industry) three-point mounting structure. This structure uses mounting lugs located on the compressor housing to connect to three predetermined mounting points on the vehicle. Because these three mounting points are located in the vehicle, the compressor's dimensional design is constrained by these three points. Summary of the Invention

[0003] The present invention aims to solve or at least alleviate the problems existing in compressors in the prior art, in particular in three-point mounted scroll compressors.

[0004] According to some aspects, there is provided a compressor comprising:

[0005] Shell body;

[0006] a compression unit in the housing body; and

[0007] an end cover at one end of the housing body, wherein a discharge chamber is defined between the end cover and the compression unit;

[0008] The outer side of the end cover is provided with a mounting channel for fixing the compressor, and the wall between the mounting channel and the discharge chamber protrudes into the discharge chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A cross-sectional view of a compressor according to an embodiment of the present invention is shown.

[0010] Figure 2 A perspective view from a first angle of an end cover of a compressor according to an embodiment of the present invention is shown.

[0011] Figure 3 A perspective view from a second angle is shown of an end cover of a compressor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0012] refer to Figures 1 to 3 The compressor according to the embodiment of the present invention is described in detail. Figure 1, shows a compressor 100 according to one embodiment, such as a scroll compressor, which is often installed in vehicles for use in vehicle refrigeration systems. Compressor 100 includes a housing 101, a compression unit 11 within housing 101, and an end cap 102 at one end of housing 101. As shown, compression unit 11 may include a rotating shaft 114, a first bearing 112 and a second bearing 113 supporting shaft 114, and blades 115 on shaft 114. The rotating shaft 114 defines an axial direction. The specific structure and operation of the compression unit can be conventional and will not be described in detail here. In the illustrated embodiment, housing 101 has an inwardly extending portion to accommodate the bearings 112 and 113. Alternatively, housing 101 may simply be cylindrical or cylindrical, serving as the compressor housing. A discharge chamber 4 is defined between end cap 102 and the compression unit. Gas compressed by the compression unit passes through discharge chamber 4 and is discharged. As shown, shaft 114 extends within compression unit 11 but does not extend into discharge chamber 4. The volume of the discharge chamber 4 is limited by the position of the compressor's mounting portion. In particular, when a VDA three-point mounting structure is adopted, the axial length of the discharge chamber 4 is limited by the mounting portion on the end cover. To increase the volume of the discharge chamber 4 and thereby reduce the discharge pulse of the compressor, the present application provides a modified end cover 102, wherein the space of the discharge chamber 4 is increased by incorporating the space around the end cover mounting portion into the discharge chamber 4.

[0013] The outer side of the end cover 102 according to an embodiment of the present invention has a mounting channel 230 for fixing the compressor, which is used, for example, to fix the compressor to a vehicle. The wall 311 between the mounting channel 230 and the discharge chamber 4 protrudes into the discharge chamber 4. This arrangement can increase the space of the discharge chamber 4 when the installation position is limited. In some embodiments, the discharge chamber 4 has a portion ( axially overlapping with the mounting channel 230 ) on the inner side of the end cover. Figure 1 (shown as dashed lines in the figure), the axial length of the overlapping portion is greater than one-third of the diameter of mounting channel 230. For example, the axial length of the overlapping portion can be one-third, one-half, or three-quarters of the diameter of mounting channel 230. By increasing the axial length of the overlapping portion, more of the space surrounding mounting channel 230 is incorporated into discharge chamber 4, thereby increasing the volume of discharge chamber 4 and effectively reducing the discharge pulse of the compressor. In some embodiments, the overlapping portion of discharge chamber 4 includes a first portion 41 and a second portion 42 on opposite sides of mounting channel 230.

[0014] In some embodiments, the sidewall of the housing body 101 includes two additional mounting portions 21, 22. The additional mounting portions 21, 22 and the mounting channel 230 of the end cap 102 together form the three mounting points of the VDA three-point installation. As shown, the additional mounting portions 21, 22 can be formed in the form of mounting ears that can be connected with bolts.

[0015] Continue to refer Figure 2 and Figure 3 In some embodiments, the mounting channel 230 is formed as a through-hole. The outer side of the end cap 102 also includes a groove 232 at one end of the mounting channel 230. The wall 312 between the groove 232 and the discharge chamber 4 protrudes into the discharge chamber 4. The radial dimension of the through-hole of the mounting channel 230 is smaller than the groove 232, forming a step between the two. The mounting channel 230 is used to receive a threaded rod, and the groove 232 is used to receive a bolt head or nut. Thus, the compressor can be secured to a stud or threaded hole on the vehicle using the mounting channel on the end cap 102. This structure meets all the requirements of the VDA three-point mounting standard.

[0016] refer to Figure 2 and Figure 3 In some embodiments, the end cap 102 further includes a discharge channel 29, a bottom wall 32, and a side wall 33 surrounding the bottom wall 32, and the discharge channel 29 also has a portion located on the inner side of the end cap. Figure 3 It can be seen that there is a discharge wall 293 between the discharge channel 29 of the end cover 102 and the discharge chamber 4. The discharge wall 293 protrudes from the bottom wall into the discharge chamber 4 and is connected between the opposite side walls. The wall 311 between the installation channel 230 and the discharge chamber 4 is connected between the discharge wall 293 and the side wall. The discharge channel 29 and the installation channel 230 are not connected to each other. Specifically, the discharge channel 29 is closer to the discharge chamber than the installation channel 230. In some embodiments, the extension direction of the discharge channel 29 can be perpendicular to the installation channel 230. When installed in the vehicle, the end cover is approximately Figure 1 The mounting passage 230 is oriented in the direction shown, wherein the mounting passage 230 may be oriented substantially horizontally and the discharge passage 29 may be oriented substantially vertically. The discharge passage 29 includes an inlet port 290, an outlet port 291, and a drain port 292. Gas from the liquid-gas mixture entering the discharge passage 29 is discharged through the outlet port 291, while oil returns to the compressor through the drain port 292 due to gravity. Furthermore, in some embodiments, the mounting passage 230 may extend in a direction perpendicular to the axial direction.

[0017] like Figure 3 As shown, the end cover 102 includes a bottom wall 32 and a side wall 33, and the mounting channel 230 is recessed into the bottom wall 32 toward the discharge chamber 4. Figure 1 As best seen in FIG, the outer edge of the mounting portion 23 protrudes from the bottom wall 32. However, in alternative embodiments, the outer edge of the mounting portion 23 may be flush with the bottom wall 32, or recessed into the bottom wall 32. The end cover 102 also includes mounting holes 28 distributed along the outer periphery of the end cover 102 for connecting the end cover to other parts of the compressor.

[0018] On the other hand, it is also desirable to protect a vehicle including a compressor according to various embodiments, the compressor being secured to the vehicle via mounting channel 230 and other mounting points 21 and 22, the compressor constituting part of the vehicle's air conditioning system. For example, the compressor can be secured to the vehicle by passing a bolt through mounting channel 230 and fastening it to a threaded hole in the vehicle, or by passing a stud secured to the vehicle through mounting channel 230 and receiving a nut.

[0019] The details provided in all the above embodiments are exemplary rather than restrictive. The scope of protection of the present invention is defined by the appended claims.

Claims

1. A compressor comprising: a housing body (101); A compression unit (11) in the housing body (101); as well as an end cover (102) at one end of the housing body (101), wherein a discharge chamber (4) is provided between the end cover (102) and the compression unit (11); It is characterized in that the outer side of the end cover (102) has a mounting channel (230) for fixing the compressor, the wall (311) between the mounting channel (230) and the discharge chamber (4) protrudes into the discharge chamber (4), and the discharge chamber (4) has a portion overlapping with the mounting channel (230) in the axial direction.

2. The compressor according to claim 1, characterized in that: The axial length of the overlapping portion is greater than one third of the diameter of the mounting channel (230).

3. The compressor according to claim 2, characterized in that: The mounting channel (230) extends in a direction perpendicular to the axial direction, and the overlapping portion of the discharge chamber (4) includes a first portion (41) and a second portion (42) at opposite sides of the mounting channel (230).

4. The compressor according to claim 1, characterized in that The mounting channel (230) is formed as a through circular hole. The outer side of the end cover (102) further includes a groove (232) at one end of the mounting channel (230). The wall (312) between the groove (232) and the discharge chamber (4) protrudes into the discharge chamber (4). The mounting channel (230) is used to receive a screw rod, and the groove (232) is used to receive a bolt head or a nut.

5. The compressor according to claim 1, characterized in that: The end cover (102) further includes a discharge channel (29), a bottom wall (32) and a side wall (33), wherein the side wall (33) surrounds the bottom wall (32), a discharge wall (293) is provided between the discharge channel (29) and the discharge chamber (4), the discharge wall (293) protrudes from the bottom wall into the discharge chamber (4) and is connected between opposite side walls, a wall (311) between the mounting channel (230) and the discharge chamber (4) is connected between the discharge wall and the side wall, and the discharge channel (29) and the mounting channel (230) are not connected to each other.

6. The compressor according to claim 1, characterized in that The end cover (102) comprises a bottom wall (32) and a side wall (33), and the mounting channel (230) is recessed into the bottom wall (32) toward the discharge chamber (4).

7. The compressor according to claim 6, characterized in that: The outer edge (231) of the installation channel (230) protrudes from the bottom wall (32), or is flush with the bottom wall (32), or is recessed into the bottom wall (32).

8. The compressor according to claim 1, characterized in that The side wall of the housing body (101) comprises two additional mounting portions (21, 22), and the two additional mounting portions (21, 22) and the mounting channel (230) of the end cover together constitute three mounting points of a VDA three-point installation.

9. The compressor according to claim 1, characterized in that: The compressor is a scroll compressor.

10. A vehicle, characterized in that: The vehicle comprises a compressor according to any one of claims 1 to 9, the compressor being fixed to the vehicle by means of the mounting channel (230), the compressor constituting a part of a vehicle air conditioning system.

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