WO2019134654A1

WO2019134654A1 - Compressor

Info

Publication number: WO2019134654A1
Application number: PCT/CN2019/070163
Authority: WO
Inventors: 赵小冬
Original assignee: 艾默生环境优化技术(苏州)有限公司
Priority date: 2018-01-05
Filing date: 2019-01-03
Publication date: 2019-07-11
Also published as: KR102395623B1; KR20200100843A; CN207795587U

Abstract

A compressor, comprising a housing (20), a compression mechanism (80), and a vent valve assembly (100). The compression mechanism (80) is disposed in the housing (20) and configured to compress a fluid. The compression mechanism (80) comprises a vent port (81) used for discharging the compressed fluid. The vent valve assembly (100) is disposed at or near the vent port of the compression mechanism (80) to reduce or prevent backflow the compressed fluid to the compression mechanism (80). The vent valve assembly (100) comprises a vent valve (120) and a connecting member (140) used for connecting the vent valve (120) to a fixing structure of the compressor. The vent valve (120) and the connecting member (140) are formed as a single piece, or are separately formed and assembled together. The vent valve assembly (100) in the compressor is easy to mount, thereby reducing assembly costs and shortening the assembly time.

Description

compressor

The present application claims priority to Chinese Patent Application No. 20182001787, filed on Jan. 5, 2008, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present disclosure relates to a compressor.

Background technique

The content of this section merely provides background information related to the present disclosure, which may not constitute prior art.

When the compressor is shut down or unloaded, due to the pressure difference existing between the exhaust side and the suction side of the compressor, the fluid on the exhaust side tends to flow toward the suction side, so the compression mechanism of the compressor may be such The backflowing fluid moves in the opposite direction, resulting in reduced compressor efficiency, increased noise and power consumption.

In order to prevent backflow of the fluid, a check valve is usually provided at or near the exhaust port of the compression mechanism of the compressor. However, in the conventional compressor including the check valve, the check valve is usually independently positioned at or near the compression mechanism of the compressor, and then the pressure ring is mounted to the compression mechanism or other fixed member. The check valve is fastened to the compressor's compression mechanism or other fixed part by a pressure ring during the installation of the pressure ring. Therefore, the step-by-step mounting process of the check valve is complicated, and an undesired phenomenon may occur, for example, the air outlet of the valve body is partially blocked, tilted or stuck due to the positioning pin, or the valve plate is deformed or the like.

Accordingly, it is desirable in the art to provide a compressor that can facilitate the installation of a check valve or at least partially overcome the above problems.

Summary of the invention

It is an object of one or more embodiments of the present disclosure to provide a compressor including a modular valve assembly for preventing backflow of compressed fluid to a compression mechanism.

Another object of one or more embodiments of the present disclosure is to provide a compressor that can be easily installed with an exhaust valve assembly.

According to an aspect of the present disclosure, a compressor including a housing, a compression mechanism, and an exhaust valve assembly is provided. The compression mechanism is disposed in the housing and configured to compress fluid, the compression mechanism including an exhaust port for discharging compressed fluid. The exhaust valve assembly is disposed at or near an exhaust port of the compression mechanism to reduce or prevent back flow of compressed fluid to the compression mechanism. The exhaust valve assembly includes an exhaust valve and a connecting member for connecting the exhaust valve to a fixed structure of the compressor, the exhaust valve and the connecting member being formed as a single piece, or separately Formed and assembled together.

In some examples of the present disclosure, the exhaust valve is a one-way valve that allows fluid to be expelled from the compression mechanism but prevents back flow of compressed fluid into the compression mechanism.

In some examples of the present disclosure, the exhaust valve includes: a valve seat having a valve hole formed therein to allow passage of a fluid; and a valve plate for opening or closing the valve hole; And/or a valve stop for limiting the maximum displacement of the valve plate.

In some examples of the present disclosure, the connecting member is formed or assembled on one side of a valve seat of the exhaust valve or formed or assembled on one side of a valve stop of the exhaust valve.

In some examples of the present disclosure, the connecting member is provided with a connection for engaging with a fixing structure of the compressor, the connecting portion being a thread, a buckle, a pawl, a flange, and a receiving connecting member Hole or recess, press fit or weld.

In some examples of the present disclosure, the connecting member is assembled with the exhaust valve in a detachable manner.

In some examples of the present disclosure, the exhaust valve is provided with a first receiving portion for receiving a fastener, and the connecting member is provided with a second receiving portion that is aligned with the first receiving portion. The fastener is inserted into the first receiving portion and the second receiving portion to assemble the connecting member with the exhaust valve.

In some examples of the disclosure, the first receiving portion and the second receiving portion are through holes, blind holes, threaded holes, or grooves. The fastener is a locking pin, a spring pin or an expansion screw.

In some examples of the present disclosure, the first receiving portion extends in the valve seat, the valve plate, and the valve stop.

In some examples of the present disclosure, the connecting member is provided with a tool engagement portion for engaging an installation tool.

In some examples of the present disclosure, the connecting member is generally cylindrical with a central through hole that allows fluid to pass therethrough. An external thread is provided on an outer peripheral surface of the connecting member to engage with a thread on the fixing structure. The tool engagement portion is a recess provided on an outer end surface of the connecting member.

In some examples of the present disclosure, the compressor further includes: a partition that partitions an inner space of the housing into a suction side and an exhaust side; and/or a cover, the cover It is fixedly disposed on the compression mechanism. The connecting member is coupled to the partition or the cover.

In some examples of the present disclosure, the connecting member is positioned closer to the exhaust port than the exhaust valve. The baffle or the cover plate is provided with a stop for preventing the exhaust valve assembly from moving away from the exhaust port.

In some examples of the present disclosure, the baffle or the cover plate has a cylindrical portion for receiving the exhaust valve. The stopper is a flange that extends radially inward from an inner peripheral surface of the cylindrical portion.

In some examples of the present disclosure, an advance exhaust valve, a protective valve, and/or a back pressure chamber are disposed on the cover plate in the compressor.

In some examples of the present disclosure, the compression mechanism includes: a fixed scroll including a fixed scroll end plate, a fixed scroll blade formed on one side of the fixed scroll end plate; and a movable vortex The movable scroll includes an orbiting scroll end plate and an orbiting scroll blade formed on one side of the movable scroll end plate. The fixed scroll blade and the orbiting scroll blade mesh with each other and together with the fixed scroll end plate and the movable scroll end plate form a series of compression chambers for compressing fluid. The connecting member is coupled to the fixed scroll at the exhaust port.

In the compressor according to an embodiment of the present disclosure, since the exhaust valve assembly includes the exhaust valve and the connecting member and the exhaust valve and the connecting member are previously integrated together before being assembled to the fixed structure of the compressor, it is easy to exhaust The valve assembly is mounted to a fixed structure of the compressor, such as an orbiting scroll, partition or cover. The integration process of the exhaust valve assembly itself is not limited by the installation space inside the compressor.

DRAWINGS

The features and advantages of one or more embodiments of the present disclosure will become more readily understood from

1 is a longitudinal sectional view of a compressor according to an embodiment of the present disclosure;

Figure 2 is a partial enlarged view of the compressor of Figure 1;

Figure 3 is a perspective view of the exhaust valve assembly of the compressor of Figure 1;

Figure 4 is another perspective view of the exhaust valve assembly of the compressor of Figure 1;

Figure 5 is a cross-sectional view of the exhaust valve assembly of the compressor of Figure 1;

Figure 6 is a cross-sectional view of the exhaust valve assembly of the compressor of Figure 1 taken along the spring pin;

Figure 7 is an exploded perspective view of the exhaust valve assembly of the compressor of Figure 1;

Figure 8 is a perspective view of the exhaust valve of the compressor of Figure 1;

Figure 9 is a perspective view of the connecting member of the compressor of Figure 1;

Figure 10 is another perspective view of the connecting member of the compressor of Figure 1.

Detailed ways

The following description of the preferred embodiments is merely exemplary and is in no way limiting The same reference numerals are used in the respective drawings to refer to the same components, and thus the construction of the same components will not be repeatedly described.

A compressor according to an embodiment of the present disclosure will be described below with reference to the accompanying drawings. The drawings of the present specification show a vertical scroll compressor, however, it should be understood that the present disclosure is not limited to the illustrated vertical scroll compressor, for example, may be other suitable types of compressors or other types of drinking water. Scroll compressor.

As shown in FIG. 1, compressor 10 includes a generally closed housing 20. The casing 20 may be composed of a substantially cylindrical body portion 22, a top cover 24 provided at one end of the body portion 22, and a bottom cover 26 provided at the other end of the body portion 22. A partition 30 is provided between the top cover 24 and the body portion 22 to partition the internal space of the housing 20 into an intake side and an exhaust side. The space between the partition 30 and the top cover 24 constitutes the exhaust side, and the space between the partition 30, the body portion 22 and the bottom cover 26 constitutes the suction side. An intake joint 32 for sucking in fluid is provided on the suction side, and an exhaust joint 34 for discharging the compressed fluid is provided on the exhaust side.

A compression mechanism 80 and a drive mechanism 40 for driving the compression mechanism 80 are disposed in the housing 20. The compression mechanism 80 draws in fluid from the suction side of the compressor 10 and compresses the fluid to be discharged to the exhaust side. More specifically, the compression mechanism 80 can include, for example, a fixed scroll 82 and an orbiting scroll 84. The movable scroll 84 includes an end plate 84a, a hub portion 86 formed on one side of the end plate, and a spiral blade 84b formed on the other side of the end plate. The fixed scroll 82 includes an end plate 82a, a spiral blade 82b formed on one side of the end plate, and an exhaust port 81 formed at a substantially central position of the end plate. The vane 82b of the fixed scroll 82 and the vane 84b of the movable scroll 84 mesh with each other and together with the end plate 82a and the end plate 84a constitute a series of compression chambers whose volume gradually decreases from the radially outer side to the radially inner side to compress the fluid. . Wherein, the radially outermost compression chamber is at the suction pressure, and the radially innermost compression chamber is at the exhaust pressure. The intermediate compression chamber is between the suction pressure and the discharge pressure, and is also referred to as the medium pressure chamber. The compressed fluid in the compression chamber exits the compression mechanism 80 via the exhaust port 81 and enters the exhaust side, and then exits the compressor via the exhaust connection 34.

The drive mechanism 40 may include, for example, a motor composed of a stator and a rotor. A drive shaft 50 is disposed in the rotor to drive the movable scroll 84. A portion of the drive shaft 50 is supported by a main bearing disposed in the main bearing housing 60. The main bearing housing 60 can be fixed relative to the housing 20 by any means. One end of the drive shaft 50 is formed with an eccentric crank pin 52. The eccentric crank pin 52 fits in the hub portion 86 of the orbiting scroll 84 via an unloading bushing to drive the orbiting scroll 84 to rotate relative to the fixed scroll 82 (ie, the axis of the orbiting scroll 84 surrounds the axis of the fixed scroll 82). Rotate, but the orbiting scroll 84 itself does not rotate about its own axis).

In order to achieve an axial seal between the tip end of the vane 82b of the fixed scroll 82 and the end plate 84a of the movable scroll 84 and between the tip end of the vane 84b of the movable scroll 84 and the end plate 82a of the fixed scroll 82, A side of the end plate 82a of the fixed scroll 82 opposite to the vane 82b is provided with a back pressure chamber. The back pressure chamber may be in fluid communication with one of the intermediate pressure chambers, such as the intermediate pressure chamber, through an axially extending through bore formed in the end plate 82a to form a force that urges the fixed scroll 82 toward the movable scroll 84. When the pressure in each compression chamber exceeds a set value, the resultant force generated by the pressure in these compression chambers will exceed the downward pressure provided in the back pressure chamber to cause the fixed scroll 82 to move upward. At this time, the fluid in the compression chamber will pass through the gap between the tip end of the vane 82b of the fixed scroll 82 and the end plate 84a of the movable scroll 84, and the tip end of the vane 84b of the movable scroll 84 and the end plate of the fixed scroll 82. The gap between 82a leaks to the low pressure side to effect unloading, providing axial flexibility to the compressor. It should be understood that the back pressure chamber may be provided, for example, on a cover plate fixed to the fixed scroll as long as it can perform the above-described functions.

When the compressor is in the unloaded state, if the high-pressure high-temperature fluid on the exhaust side flows back to the suction side of the compressor, a problem of repeated compression of the fluid is generated and the temperature around the drive mechanism is increased to affect the operating efficiency of the drive mechanism. To this end, in this type of compressor, an exhaust valve may be provided at the exhaust port 81 of the fixed scroll 82 to reduce or prevent backflow of compressed high pressure fluid into the compression mechanism, i.e., exhaust from the compressor. The side is returned to the inspiratory side. Such an exhaust valve may be fixedly disposed at or near the exhaust port 81. For example, the exhaust valve may be directly mounted to the fixed scroll 82 at the exhaust port 81, or to the partition 30 (or the muffler) adjacent to the exhaust port 81, or the cover plate 70 provided with the advance exhaust valve.

In existing compressors with an exhaust valve, the exhaust valve is typically positioned independently on a fixed scroll or cover plate, however the pressure ring is mounted to a fixed scroll or cover plate, and the pressure ring is mounted or tightened. At the same time, the exhaust valve is fixed to the fixed scroll or the cover. This step-by-step installation process is complicated and may cause some undesirable phenomena, for example, the air outlet of the valve body is partially blocked, tilted or stuck due to the positioning pin, or the valve plate is deformed.

In order to simplify the installation process of the exhaust valve and at least partially avoid the occurrence of the above problems, the compressor according to the present disclosure includes an exhaust valve assembly that is preformed by integrating a connecting member on the exhaust valve. In this way, the entire exhaust valve assembly can be assembled directly to the fixed structure of the compressor, such as a fixed scroll, partition or cover, by means of an integrated connecting member.

A compressor having an exhaust valve assembly according to an embodiment of the present disclosure will be described in detail below with reference to FIGS. 2 through 7. As shown in FIG. 2, the exhaust valve assembly 100 is mounted to the cover plate 70. Specifically, the cap plate 70 may have a central cylindrical portion 71, and the exhaust valve assembly 100 may be installed in the cylindrical portion 71. It should be understood that the cylindrical portion 71 may be formed to extend outward from the body of the cover plate (the fixed structure of the compressor for mounting the exhaust valve assembly) 70, or may be formed inwardly recessed from the body.

In the example of FIG. 2, the cylindrical portion 71 of the cover plate 70 is provided with a stopper 72 at the free end. According to the example of FIG. 2, the exhaust valve assembly 100 is fitted into the cylindrical portion 71 from the underside of the cover plate 70 until the exhaust valve assembly 100 abuts the stop 72, thereby blocking the exhaust valve assembly 100 from further away The exhaust port 81 moves to fasten the exhaust valve assembly 100 in the cylindrical portion 71. The stopper 72 is an annular flange that extends radially inward from the inner peripheral surface of the cylindrical portion 71.

The exhaust valve assembly 100 may include an exhaust valve 120 and a connecting member 140. As shown in FIGS. 3-6, the exhaust valve 120 and the connecting member 140 may be pre-assembled together to form the exhaust valve assembly 100 prior to assembly to the cylindrical portion 71 of the cover plate 70. Thus, at least some of the problems existing in the prior art described above can be avoided, and the pre-assembly of the exhaust valve and the connecting member is not limited by the installation space, and the installation is convenient.

In the illustrated example, the exhaust valve 120 may include a valve seat 122 and a valve plate 124. A valve bore 1223 that allows fluid to pass therethrough is formed in the valve seat 122, and the valve plate 124 is configured to be at least partially movable to open or close the valve bore 1223. The exhaust valve 120 may also include a valve stop 126 for limiting the maximum displacement of the valve plate 124. A passage allowing fluid to pass therethrough may be formed in the valve block 126. In one example, a spacer 128 may also be provided between the valve seat 122 and the valve plate 124 to adjust the relative position of the valve seat 122 and the valve plate 124. The valve seat 122, the spacer 128, the valve piece 124, and the valve stop 126 may be respectively provided with through

holes

1221, 1281, 1241 and 1261 aligned with each other to receive a fastener 131, such as a spring pin. The through

holes

1221, 1281, 1241, and 1261 together form a first receiving portion 121 of the exhaust valve 120 for receiving the fastener 131.

One end of the valve piece 124 can be fixed to the valve seat 122, the spacer 128, and the valve stop 126, and the other end of the valve piece 124 can be a free end. When fluid acts on the valve plate 124 in a direction from the valve seat 122 toward the valve stop 126, the free end of the valve plate 124 elastically deforms and curves toward the valve stop 126 to open the valve bore 1223. When the fluid flows in a direction from the valve stop 126 to the valve seat 122, the valve piece 124 returns to the initial position to close the valve hole 1223 under the action of the fluid pressure and the elastic restoring force of the valve piece 124 itself.

In the illustrated example, the exhaust valve is configured to allow fluid to be expelled from the compression mechanism but prevents back flow of compressed fluid to the one-way valve in the compression mechanism. However, in the embodiments of the present disclosure, the specific configuration of the exhaust valve 120 is not limited. Rather, the exhaust valve 120 can be any type of exhaust valve and can have any suitable configuration. The vent valve may also be configured to reduce, rather than completely prevent, the return of compressed fluid to the compression mechanism.

In the illustrated example, the connecting member 140 is generally cylindrical and has a central through hole 145 that allows fluid to pass therethrough. The connecting member 140 includes a cylindrical outer peripheral surface 142 and end faces 144 and 146 on both sides of the outer peripheral surface 142. In the exhaust valve assembly 100, the end surface 146 of the connecting member 140 abuts the valve seat 122 of the exhaust valve 120, and the end surface 144 is exposed to the outside, and thus may also be referred to as an outer end surface. A threaded portion 71 that is screwed to the cover plate 70 of the compressor 10 may be provided on the outer peripheral surface 142 of the connecting member 140. The thread on the outer peripheral surface 142 of the connecting member 140 forms a joint of the connecting member 140.

The connecting member 140 may also include a second receiving portion 141 for receiving the fastener 131 and aligning with the first receiving portion 121 of the exhaust valve 120. In the illustrated example, the second receiving portion is in the form of a blind hole. By aligning the second receiving portion 141 of the connecting member 140 with the first receiving portion 121 of the exhaust valve 120 and inserting the fastener 131 into the first receiving portion 121 of the exhaust valve 120 and the second receiving portion 141 of the connecting member 140 In this case, pre-assembly of the exhaust valve 120 and the connecting member 140 can be achieved, thereby forming the exhaust valve assembly 100.

The connecting member 140 may also be provided on the outer end surface 144 with a recess 143 for receiving a mounting tool (not shown) such as a screwdriver to mount the exhaust valve assembly 100 to a fixed structure of the compressor such as the cover 70 by means of a mounting tool. . It should be understood that the cover plate 70 may be a fixed structure having a specific function in which the compressor is fixedly mounted on the fixed scroll member. For example, an advance exhaust valve, various protection valves, and/or a back pressure chamber or the like may be provided on the cover plate 70.

It should be understood that the present application is not limited to the specific construction of the various components of the exhaust valve assembly. Rather, the various components of the exhaust valve assembly can be modified as long as they perform the functions described in this disclosure.

For example, the exhaust valve and the connecting member may be pre-assembled together in a detachable manner other than the spring pin. The exhaust valve and the connecting member may be pre-assembled together in a fixed connection by, for example, welding, press fitting, or the like. Alternatively, the exhaust valve and the connecting member may also be formed as a single piece.

In the illustrated example, the connecting member abuts the valve seat of the exhaust valve. However, it should be understood that the connecting member may be pre-integrated with the valve block in advance. For example, the connecting member can be connected to the valve stop or can be formed in one piece with the valve stop.

The first receiving portion, the second receiving portion, and the fastener may be any other suitable structure as long as it can perform the functions described in the present disclosure. For example, the first receiving portion of the exhaust valve may be a blind hole, a threaded hole or a groove, and the second receiving portion of the connecting member may be a through hole, a threaded hole or a groove. The fastener can be a lock pin or an expansion screw or the like.

The connecting portion of the connecting member may include a snap, a pawl, a flange, a hole or a recess for receiving the connecting member, a press-fit portion or a welded portion, and the like.

In the illustrated example, the tool engagement portion is a indented recess, however, it may also be a cross-shaped recess or other shaped recess. In an alternative example, the tool engagement portion can be a protrusion of any suitable shape.

In the illustrated example, the stop on the compressor securing member for mounting the exhaust valve assembly is a radially inwardly extending annular flange. However, the stopper may be a radially extending circular bottom, and a through hole for fluid passage is formed in the cylindrical wall of the compressor fixing member. The stop can also be any other suitable shape or structure as long as it can perform the functions described in this disclosure.

Although the various embodiments of the present disclosure have been described in detail herein, it is understood that the invention is not limited to The skilled person implements other variations and variants. All such variations and modifications are within the scope of the present application. Moreover, all of the components described herein can be replaced by other technically equivalent components.

Claims

A compressor comprising:

Housing (20);

a compression mechanism (80) disposed in the housing and configured to compress a fluid, the compression mechanism including an exhaust port (81) for discharging compressed fluid;

An exhaust valve assembly (100) disposed at or near an exhaust port of the compression mechanism to reduce or prevent backflow of compressed fluid to the compression mechanism,

Wherein the exhaust valve assembly includes an exhaust valve (120) and a connecting member (140) for connecting the exhaust valve to a fixed structure of the compressor, the exhaust valve (120) and The connecting members (140) are formed as one piece or separately formed and assembled.
The compressor of claim 1 wherein said exhaust valve (120) is a one-way valve that allows fluid to be discharged from said compression mechanism but prevents back flow of compressed fluid into said compression mechanism.
The compressor of claim 2 wherein said exhaust valve (120) comprises:

a valve seat (122) having a valve hole (1223) formed therein to allow passage of fluid; and

a valve plate (124) for opening or closing the valve bore; and/or

A valve stop (126) for limiting the maximum displacement of the valve plate.
The compressor according to claim 3, wherein said connecting member (140) is formed or assembled on one side of a valve seat of said exhaust valve, or formed or assembled in a valve stop of said exhaust valve side.
The compressor according to claim 4, wherein said connecting member (140) is provided with a joint for engaging with a fixing structure of said compressor, said connecting portion being a thread, a snap, a pawl, a projection a rim, a hole or recess for receiving a connecting element, a press fit or a weld.
The compressor according to claim 5, wherein said connecting member (140) is detachably assembled with said exhaust valve (120).
The compressor according to claim 6, wherein said exhaust valve (120) is provided with a first receiving portion (121) for receiving a fastener (131),

The connecting member (140) is provided with a second receiving portion (141) aligned with the first receiving portion (121), and

The fastener (131) is inserted into the first receiving portion (121) and the second receiving portion (141) to assemble the connecting member (140) with the exhaust valve (120) .
The compressor according to claim 7, wherein the first receiving portion (121) and the second receiving portion (141) are through holes, blind holes, threaded holes or grooves, and

The fastener is a locking pin, a spring pin or an expansion screw.
The compressor according to claim 8, wherein said first receiving portion (121) extends in said valve seat, said valve plate and said valve stop.
The compressor according to claim 1, wherein the connecting member (140) is provided with a tool engagement portion (143) for engaging an installation tool.
The compressor according to claim 10, wherein said connecting member (140) has a substantially cylindrical shape with a central through hole (145) allowing passage of a fluid,

An external thread is provided on an outer circumferential surface of the connecting member (140) to engage with a thread on the fixing structure, and

The tool engagement portion (143) is a recess provided on an outer end surface (144) of the connecting member (140).
The compressor according to any one of claims 1 to 11, wherein the compressor further comprises:

a partition (30) separating the internal space of the casing into an intake side and an exhaust side; and/or

a cover plate (70), the cover plate is fixedly disposed on the compression mechanism,

Wherein the connecting member (140) is connected to the partition or the cover.
The compressor according to claim 12, wherein the connecting member (140) is positioned closer to the exhaust port than the exhaust valve (120), and

The baffle or the cover is provided with a stop (72) for preventing movement of the exhaust valve assembly away from the exhaust port.
The compressor according to claim 13, wherein the partition or the cover has a cylindrical portion (71) for receiving the exhaust valve, and

The stopper (72) is a flange that extends radially inward from an inner peripheral surface of the cylindrical portion (71).
The compressor according to claim 12, wherein an advance exhaust valve, a protective valve, and/or a back pressure chamber are provided on the cover plate in the compressor.
The compressor according to any one of claims 1 to 11, wherein the compression mechanism (80) comprises:

a fixed scroll (82), the fixed scroll including a fixed scroll end plate (82a), a fixed scroll blade (82b) formed on one side of the fixed scroll end plate (82a);

a movable scroll (84), the movable scroll including an orbiting scroll end plate (84a) and an orbiting scroll blade (84b) formed on one side of the movable scroll end plate (84a),

Wherein the fixed scroll blade (82b) and the orbiting scroll blade (84b) are in mesh with each other and form a series of together with the fixed scroll end plate (82a) and the movable scroll end plate (84a). a compression chamber for compressing fluid, and

The connecting member (140) is coupled to the fixed scroll at the exhaust port.