CN218177454U

CN218177454U - Scroll compressor having a plurality of scroll members

Info

Publication number: CN218177454U
Application number: CN202222589453.5U
Authority: CN
Inventors: 王海翔; 程帆
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-30
Anticipated expiration: 2032-09-29
Also published as: KR20240045123A

Abstract

The present application provides a scroll compressor, which includes: a seal, comprising: a first sealing body having a closed outer contour; a second sealing body having a closed outer contour and configured to surround the first sealing body outside an outer periphery of the first sealing body; and one or more connection portions connected between the first sealing body and the second sealing body; wherein the first sealing body, the second sealing body and the connecting portion are constructed as one body; a first housing; and a second housing configured to fit with the first housing to define an exhaust chamber located inside and a suction chamber at a periphery of the exhaust chamber; wherein the seal member is provided between the first housing and the second housing such that the first seal body is located between the air discharge chamber and the air suction chamber, and the second seal body is located at an outer periphery of the air suction chamber, the seal member further including an oil return passage hole extending from near the first seal body into one of the connection portions.

Description

Scroll compressor having a plurality of scroll members

Technical Field

The present application relates to the field of compressor structures. More particularly, the present application relates to a scroll compressor that is intended to provide improved sealing capability and assembly accuracy.

Background

Scroll compressors typically include a stationary plate in the middle and a suction chamber disposed about the stationary plate and may be assembled from two shells. An air-tightness is required between the stationary disc and the suction chamber and between the suction chamber and the ambient air. Two separate seals may be provided between the stationary disc and the suction chamber and between the suction chamber and the ambient air, respectively. The seal may be an O-ring, such as an O-ring made of rubber. The seal may be sandwiched between the two housings and provide sealing capability via the tightening of the fasteners. The fasteners may be bolts, for example.

SUMMERY OF THE UTILITY MODEL

It is an object of one aspect of the present application to provide a scroll compressor that provides improved fit accuracy and sealing between components.

The purpose of the application is realized by the following technical scheme:

a scroll compressor, comprising:

a seal, comprising:

a first sealing body having a closed outer contour;

a second sealing body having a closed outer contour and configured to surround the first sealing body outside an outer periphery of the first sealing body; and

one or more connection portions connected between the first sealing body and the second sealing body; wherein the first sealing body, the second sealing body and the connecting portion are constructed as one body;

a first housing; and

a second housing configured to fit with the first housing to define an exhaust chamber inside and a suction chamber at a periphery of the exhaust chamber;

wherein the seal is disposed between the first housing and the second housing such that the first seal is located between the exhaust cavity and the suction cavity and the second seal is located at a periphery of the suction cavity; and is

Wherein the seal member further includes an oil return passage hole extending from near the first seal body into one of the connection portions.

In the above scroll compressor, optionally, the first sealing body and the second sealing body include:

a plate having a first side facing the first housing and a second side facing the second housing;

a first elastic layer disposed at a first side of the panel; and

a second elastic layer disposed at a second side of the plate.

In the above scroll compressor, optionally, at least a part of the plate member protrudes toward the first housing or the second housing with respect to another part of the plate member to form the protrusion.

In the above scroll compressor, optionally, the size of the projection of the first sealing body is configured to be larger than the size of the projection of the second sealing body.

In the above scroll compressor, optionally, the first sealing body and the second sealing body are located on the same plane, the plate member includes a metal, and the first elastic layer and the second elastic layer include rubber.

In the above scroll compressor, optionally, the first sealing body and the second sealing body are formed of an elastic material, and the first sealing body and the second sealing body are configured to have a rectangular cross section.

In the above scroll compressor, optionally, a sectional dimension of the first sealing body is configured to be larger than a sectional dimension of the second sealing body, the elastic material includes rubber, and a ratio of a width to a thickness of the rectangular section is between 5 and 10.

In the above scroll compressor, optionally, the first sealing body and the second sealing body are respectively located on different planes parallel to each other.

In the above scroll compressor, optionally, the oil return passage hole has one of the following profiles: circular arcs, elliptical arcs, parabolas, hyperbolas, or combinations thereof.

In the above scroll compressor, optionally, the seal further comprises:

a plurality of bolt holes arranged along the outline of the second sealing body and shaped to accommodate bolts that fixedly connect the first housing, the seal, and the second housing; and/or

A plurality of positioning holes arranged at the connection portion;

the first shell and/or the second shell comprise positioning pins corresponding to the positioning holes and pin holes corresponding to the positioning pins, and the positioning pins extend through the positioning holes and the pin holes.

Drawings

The present application will now be described in further detail with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will appreciate that the drawings are designed solely for the purposes of illustrating preferred embodiments and that, accordingly, should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are intended to be conceptual in nature or configuration of the depicted objects and may contain exaggerated displays. The figures are also not necessarily drawn to scale.

FIG. 1 is a front view of one embodiment of the seal of the present application.

Fig. 2 is a cross-sectional perspective view seen in the direction of A1-A1 in fig. 1.

Fig. 3 is a schematic cross-sectional view seen in the direction B1 in fig. 2.

FIG. 4 is a front view of another embodiment of the seal of the present application.

Fig. 5 is a cross-sectional perspective view as seen in the direction of A2-A2 in fig. 4.

Fig. 6 is a schematic cross-sectional view seen in the direction B2 in fig. 5.

FIG. 7 is a perspective view of one embodiment of the seal shown in FIG. 1 mounted on a first housing.

FIG. 8 is a perspective view of one embodiment of the seal shown in FIG. 4 installed on the first housing.

Fig. 9 is a perspective view of the second housing.

Detailed Description

Hereinafter, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the descriptions are illustrative only, exemplary, and should not be construed as limiting the scope of the application.

First, it should be noted that the terms top, bottom, upward, downward, and the like as used herein are defined with respect to the orientation of the various figures. These orientations are relative concepts and will therefore vary depending on the position and state in which they are located. These and other directional terms should not be construed as limiting.

Furthermore, it should also be noted that for any single technical feature described or implicit in the embodiments herein or shown or implicit in the drawings, these technical features (or their equivalents) can be continuously combined to obtain other embodiments not directly mentioned herein.

It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

FIG. 1 is a front view of one embodiment of the seal of the present application, FIG. 2 is a cross-sectional perspective view seen in the direction A1-A1 in FIG. 1, and FIG. 3 is a cross-sectional schematic view seen in the direction B1 in FIG. 2. One embodiment of the seal 100 may include: a first sealing body 110, a second sealing body 120, and a connecting portion 130.

The first seal body 110 may be shaped to fit the discharge cavity of the scroll compressor and extend along the entire perimeter of the discharge cavity. Therefore, the first sealing body 110 is configured to have an irregular shape. The function of the first seal body 110 is to isolate the discharge chamber of the scroll compressor from the suction chamber of the scroll compressor. In one embodiment, the first sealing body 110 may be constructed solid. In one embodiment, the first seal body 110 may include one or more apertures for accommodating other components of the scroll compressor.

The second seal body 120 may be shaped to fit the suction cavity of the scroll compressor and extend along the entire perimeter of the suction cavity. In the illustrated embodiment, the outer perimeter of the second sealing body 120 is configured to have a generally circular profile and is configured to extend continuously. A plurality of bolt holes 140 may be distributed along the second seal body 120. The bolt holes 140 may be sized and configured to be adapted to be threaded by bolts therethrough. In one embodiment, the second sealing body 120 extends around the entire perimeter of the first sealing body 110 and completely surrounds the perimeter of the first sealing body 110.

The connection 130 may be disposed between the first sealing body 110 and the second sealing body 120. The number of the connection portions 130 may be one or more. In the illustrated embodiment, the plurality of connecting portions 130 are distributed substantially evenly around the circular profile of the second sealing body 120. Further, one or more voids 131 may be disposed between the first sealing body 110 and the second sealing body 120, with each void 131 being separated by a connection 130. For example, the suction chamber may be disposed at a position corresponding to the gap 131.

Furthermore, the positioning holes 150 may be distributed along the contour of the seal 100. For example, the positioning hole 150 may be disposed at the connection portion 130, but may be disposed at other positions of the sealing member 100. In one embodiment, the seal 100 may also include an oil return passage hole 160. The oil return passage hole 160 may constitute a part of an oil return passage of the scroll compressor and is disposed at a lower position in fig. 1. In one embodiment, a connection is disposed adjacent to the oil return passage hole 160. In one embodiment, the oil return passage hole 160 may extend from near the first sealing body 110 into one of the connection portions 130. In another embodiment, the oil return passage hole 160 is surrounded by a portion of the first sealing body 110 and a portion of one of the connection portions 130. The oil return passage port 160 may have any suitable shape, including but not limited to: circular arcs, elliptical arcs, parabolas, hyperbolas, combinations thereof, and the like.

The fluid within the exhaust cavity, as referred to herein, typically has a relatively high operating pressure, and therefore, the exhaust cavity is also referred to as a high pressure cavity. The fluid within the suction chamber, as referred to herein, typically has a relatively low operating pressure, and therefore, the suction chamber is also referred to as a low pressure chamber. The working pressure of the fluid in the oil return passage referred to herein is generally between the working pressures of the discharge and suction chambers, and therefore the oil return passage is also referred to as an intermediate pressure chamber.

In one embodiment, the first sealing body 110, the second sealing body 120, and the connection 130 may be constructed as one piece. In one embodiment, the first sealing body 110, the second sealing body 120, and the connection 130 may be integrally formed.

Fig. 2 and 3 show details on the section A1-A1. As shown, the first sealing body 110 and the second sealing body 120 can be configured in shapes that are similar in structure but different in size. For example, as shown in FIG. 2, the width dimension of the cross-section of the first sealing body 110 can be configured to be greater than the width dimension of the cross-section of the second sealing body 120. Such a configuration makes the first sealing body 110 more gradual and less subject to forces after assembly. The first sealing element 110 and the second sealing element 120 may include a protrusion and ends at both sides of the protrusion. Taking the cross section of the second sealing body 120 shown in fig. 3 as an example, the protrusion 124 protrudes in the thickness direction with respect to the

end portions

125a and 125b on both sides. The protrusions 124 may be disposed on a portion of the entire second sealing body 120 or may be disposed distributed along the entire second sealing body 120. Similarly, the first sealing body 110 may also have a similar structure.

Further, the first sealing body 110 and the second sealing body 120 may be configured to include multiple layers. Taking the cross-section of the second sealing body 120 shown in fig. 3 as an example, the second sealing body 120 includes a plate member 121, a first resilient layer 122, and a second resilient layer 123. The plate member 121 may include first and second sides, and the first and second

elastic layers

122 and 123 are disposed at the first and second sides, respectively. In one embodiment, the first elastic layer 122 and the second elastic layer 123 are attached to the plate member 121. In one embodiment, the plate 121 may be a metal plate, for example, made of iron, steel, copper alloy, aluminum alloy, or the like. The first elastic layer 122 and the second elastic layer 123 may include an elastic material, such as rubber, plastic, and the like. The first and second

resilient layers

122, 123 may be distributed throughout the length of the second sealing body 120 or may be distributed over a portion of the length of the second sealing body 120. Similarly, the first sealing body 110 may also have a similar structure.

The protrusion 124 functions to: when the scroll compressor is assembled, the sealing body is pressed by the not-shown components from both sides, and the protrusions are also deformed under pressure, so that the generated elastic force can force the first elastic layer 122 and the second elastic layer 123 to be attached to the not-shown components, thereby achieving a better sealing effect.

FIG. 4 is a front view of another embodiment of the seal of the present application, FIG. 5 is a cross-sectional perspective view seen in the direction A2-A2 in FIG. 4, and FIG. 6 is a cross-sectional schematic view seen in the direction B1 in FIG. 5. The seal 100 'in the embodiment of FIG. 4 may be configured to have a similar structure to the seal 100 shown in FIG. 1, including a first sealing body 110', a second sealing body 120', and a connecting portion 130'. A plurality of bolt holes 140 'may be distributed along the second seal body 120'. The bolt holes 140' may be sized and configured to be adapted to be threaded by bolts therethrough. One or more voids 131' may be disposed between the first sealing body 110' and the second sealing body 120', and each void 131' is separated by a connecting portion 130'. The positioning holes 150 'may be distributed along the contour of the seal 100'. For example, the positioning hole 150' may be provided at the connection portion 130', but may be provided at other positions of the sealing member 100'. In one embodiment, the seal 100 'may also include a return oil passage hole 160'. The oil return passage hole 160' may constitute a portion of an oil return passage of the scroll compressor and is disposed at a lower position in fig. 4. In one embodiment, a connection is disposed adjacent to the oil return passage hole 160'.

Cross-section as referred to herein refers to the cross-section taken by the profile of each seal in the radial direction of the circle defined by their annular configuration. As can be seen in connection with fig. 2 and 5, the cross-section can be seen as being directed in the circumferential direction of the circle defined by the annular configuration of the respective seal and the cross-section itself extends in the radial direction of the circle defined by the annular configuration of the respective seal.

As shown in FIG. 5, the first sealing body 110 'and the second sealing body 120' each have a generally rectangular cross-section, and the cross-sectional dimension of the first sealing body 110 'is configured to be greater than the cross-sectional dimension of the second sealing body 120'. Such a configuration makes the first sealing body 110' more gradual and less subject to forces after assembly. As shown in fig. 6, taking the cross-section of the second sealing body 120' as an example, the rectangular cross-section may have a width W and a thickness T, and the ratio of the width W to the thickness T may be between 5 and 10. Further, the first sealing body 110 'and the second sealing body 120' may be configured to extend in different planes that are parallel to each other. In one embodiment, the first sealing body 110 'and the second sealing body 120' may be made of a resilient material. The resilient material may be rubber or plastic, for example.

When the scroll compressor is assembled, the sealing body of the rectangular cross section is pressed from both sides by the members not shown. The protrusions are also deformed under pressure, and the resulting elastic force forces the sealing body against the not shown component, thereby providing a better sealing effect.

FIG. 7 is a perspective view of an embodiment of the seal shown in FIG. 1 mounted on a first housing, and FIG. 8 is a perspective view of an embodiment of the seal shown in FIG. 4 mounted on a first housing. As shown, one or more locating pins 201 may be provided on the first housing 200. Each positioning pin 201 corresponds to a positioning hole on the seal 100 or 100'. The cooperation of the locating pins and locating holes causes the seal 100 to be substantially fixed in position. Although not shown, it is easily understood that the side of the first housing 200 facing the sealing member 100 may have a substantially planar shape. Fig. 7 and 8 also schematically show the components of the oil return passage 260. The oil return passage 260 may be positioned through the oil return passage hole 160 or 160'. Further, the configuration of the first housing 200 in fig. 7 and 8 may be the same, and the same first housing 200 may be adapted to accommodate different seals 100 or 100'.

Fig. 9 is a perspective view of the second housing. As shown, the side of the second housing 300 facing the seal 100 may also have a generally planar shape. In addition, the second housing 300 may further include pin holes 301. The pin holes 301 correspond to the positioning pins 201 of the first housing 200, and the positioning pins 201 are shaped to be accommodated within the pin holes 301.

The first housing 200 and the second housing 300 are configured to fit in shape and to clamp the seal 100 therebetween. The first and

second housings

200 and 300 define an exhaust chamber located inside and a suction chamber disposed around the exhaust chamber. As shown in fig. 7, the first sealing portion 110 of the sealing member 100 is disposed around the exhaust chamber, and the second sealing portion 120 is disposed around the suction chamber. The outer circumference of the second sealing portion 120 is substantially matched to the plane profiles of the first and

second housings

200 and 300 so as to achieve a sealing effect.

Further, the first and

second housings

200 and 300 may be connected by a plurality of bolts, not shown, that may extend through bolt holes 140 on the seal 100. Correspondingly, the first and

second housings

200 and 300 may also be provided with threaded holes, respectively, in order to accommodate bolts, not shown.

The sealing element and the scroll compressor have the advantages of simple structure, reliability in operation, easiness in implementation and the like. The seal 100 of the present application can be manufactured in one piece and requires only one installation operation when installed. By adopting the technical scheme, the sealing effect of the scroll compressor is improved, the manufacturing mode is simplified, and the reliability is improved.

This written description discloses the application with reference to the drawings, and also enables one skilled in the art to practice the application, including making and using any devices or systems, selecting appropriate materials, and using any incorporated methods. The scope of the present application is defined by the claims and encompasses other examples that occur to those skilled in the art. Such other examples are to be considered within the scope of protection defined by the claims of this application, provided that they include structural elements that do not differ from the literal language of the claims, or that they include equivalent structural elements with insubstantial differences from the literal language of the claims.

Claims

1. A scroll compressor, comprising:

a seal (100) comprising:

a first sealing body (110) having a closed outer contour;

a second sealing body (120) having a closed outer contour and configured to surround the first sealing body (110) outside of a periphery of the first sealing body (110); and

a plurality of connection portions (130), the connection portions (130) being connected between the first sealing body (110) and the second sealing body (120); wherein the first sealing element (110), the second sealing element (120) and the connecting part (130) are configured in one piece;

a first housing (200); and

a second housing (300) configured to fit with the first housing (200) to define an exhaust chamber inside and a suction chamber at a periphery of the exhaust chamber;

wherein the seal (100) is disposed between the first housing (200) and the second housing (300) such that the first sealing body (110) is located between the exhaust cavity and the intake cavity and the second sealing body (120) is located at an outer periphery of the intake cavity; and is provided with

Wherein the seal (100) further comprises an oil return passage hole (160), the oil return passage hole (160) extending from near the first sealing body (110) into one of the connection portions (130).

2. The scroll compressor of claim 1, wherein the first sealing body (110) and the second sealing body (120) comprise:

a plate (121) having a first side facing the first housing (200) and a second side facing the second housing (300);

a first elastic layer (122) disposed at a first side of the plate (121); and

a second elastic layer (123) disposed at a second side of the plate (121).

3. The scroll compressor of claim 2, wherein at least a portion of the plate (121) protrudes toward the first housing (200) or the second housing (300) relative to another portion of the plate (121) to form a protrusion.

4. The scroll compressor of claim 3, wherein the size of the protrusion of the first sealing body (110) is configured to be larger than the size of the protrusion of the second sealing body (120).

5. The scroll compressor of any one of claims 2-4, wherein the first sealing body (110) and the second sealing body (120) are located on a same plane, the plate member (121) comprises a metal, and the first resilient layer (122) and the second resilient layer (123) comprise a rubber.

6. The scroll compressor of claim 1, wherein the first sealing body (110) and the second sealing body (120) are formed of a resilient material, and the first sealing body (110) and the second sealing body (120) are configured to have a rectangular cross-section.

7. The scroll compressor of claim 6, wherein a cross-sectional dimension of the first sealing body (110) is configured to be larger than a cross-sectional dimension of the second sealing body (120), the resilient material comprises rubber, and a width to thickness ratio of the rectangular cross-section is between 5 and 10.

8. The scroll compressor of claim 6 or 7, wherein the first sealing body (110) and the second sealing body (120) are located on different planes that are parallel to each other.

9. The scroll compressor of claim 1, wherein the oil return passage hole (160) has one of the following profiles: circular arcs, elliptical arcs, parabolas, hyperbolas, or combinations thereof.

10. The scroll compressor of claim 1, wherein the seal (100) further comprises:

a plurality of bolt holes (140), the bolt holes (140) arranged along the contour of the second sealing body (120) and shaped to accommodate bolts that fixedly connect the first housing (200), the seal (100), and the second housing (300); and/or

A plurality of positioning holes (150), the positioning holes (150) being arranged at the connection portion (130);

wherein the first housing (200) and/or the second housing (300) comprise a positioning pin (201) corresponding to the positioning hole (150) and a pin hole (301) corresponding to the positioning pin (201), the positioning pin (201) extending through the positioning hole (150) and the pin hole (301).