KR20100031409A - Swash-plate type compressor - Google Patents

Abstract

PURPOSE: A swash plate type compressor is provided to reduce a size of a piston and to make the piston do a linear reciprocating motion with the faster speed by first-compressing a refrigerant using a propeller and second-compressing the refrigerant using the piston. CONSTITUTION: A swash plate type compressor comprises a front housing(110), a rear housing(120), cylinder blocks, a rotary shaft(140), a swash plate(144), a plurality of pistons(150), and a compression part. The front housing and the rear housing form an outer shape of the swash plate type compressor. A shaft supporting hole(132) is formed through the center of the cylinder block. A cylinder bore(134) and a swash plate room(131) are installed inside the cylinder block. A rotary shaft is rotatably installed through cylinder block and includes a flow path(142) transferring a working fluid to the cylinder bore. The swash plate is installed in the rotary shaft and revolves with the rotary shaft. The piston does a linear reciprocating motion according to a rotational motion of the swash plate in the inner part of the cylinder bore. The compression part compresses the refrigerant fist and transfers the compressed refrigerant to the flow path of the rotary shaft while revolving in a first compression room(172) included in the rear housing.

Description

Swash plate type compressor

The present invention relates to a swash plate type compressor, and more particularly, to a swash plate type compressor which performs compression of refrigerant on a secondary basis.

In general, a compressor used in an air conditioning system of an automobile inhales a gaseous refrigerant evaporated from an evaporator to a high temperature and high pressure state, which is easy to liquefy, and delivers it to a condenser.

In such a compressor, there is a configuration in which a refrigerant is actually compressed, and a reciprocating type that performs compression while reciprocating and a rotary type that performs compression while rotating. The reciprocating type includes a crank type for transmitting a driving force of a driving source using a crank shaft, a swash plate for transferring a rotating shaft provided with a swash plate, and a wobble plate using a wobble plate. Rotary type includes vane rotary type using rotary rotary shaft and vane, and scroll type using rotary scroll and fixed scroll.

1 illustrates a configuration of a general swash plate compressor. A schematic configuration of a swash plate compressor will be described with reference to the drawings. The front and rear housings 10 and 20 and the front and rear cylinder blocks 30 and 30 'form the skeleton and the appearance of the swash plate compressor 1. The front and rear cylinder blocks 30 and 30 'are coupled, and the front and rear housings 10 and 20 are coupled to both sides thereof.

Discharge chambers 12 and 22 are formed in the surfaces of the front and rear housings 10 and 20 that contact the front and rear cylinder blocks 30 and 30 ', respectively. The discharge chambers 12 and 22 are selected by a cylinder bore 34 provided in the front and rear cylinder blocks 30 and 30 'around the inner surfaces of the front and rear housings 10 and 20 and the valve unit 60 to be described later. Communicating with.

Concave portions are formed on the surfaces coupled to each other in the front and rear cylinder blocks 30 and 30 'to form the swash plate chamber 31. The swash plate chamber 31 has a swash plate 42 penetrates the rotary shaft 40 to be described later and coupled to the rotary shaft 40.

Axial support hole 32 is provided in the center of the front and rear cylinder blocks 30 and 30 '. The shaft support hole 32 is a portion into which the rotary shaft 40 to be described later is inserted, and the inner diameter of the shaft support hole 32 is designed to be in close contact with the outer surface of the rotary shaft 40.

A plurality of cylinder bores 34 are formed in the front and rear cylinder blocks 30 and 30 '. The cylinder bore 34 has a piston 50 to be described later to be seated in a linear reciprocating motion to compress the refrigerant.

Through the shaft support hole 32 and the front housing 10 is provided with a rotating shaft 40 which is rotated by an external drive source. The flow path 41 through which the refrigerant flows is formed in the rotation shaft 40. The flow passage 41 is formed long in the longitudinal direction of the rotation shaft 40 inside the rotation shaft 40. The flow passage 41 communicates with the cylinder bore 34 and the communication hole 44 ", respectively.

An inlet 41 'and an outlet 41 "through which the refrigerant flows into and out of the flow path 41 are formed in the rotary shaft 40. The inlet 41' is a communication hole of the hub 44. And a outlet 41 ", respectively, in a position in communication with the 44 ".

 An approximately disk-shaped swash plate 42 is inclined with respect to the extending direction of the rotating shaft 40 on the rotating shaft 40. The center of the swash plate 42 is provided with a hub 44 has a cylindrical shape through which the shaft hole 44 'is formed. The rotary shaft 40 is press-fitted into the shaft hole 44 'so that the swash plate 42 is installed on the rotary shaft 40.

A communication hole 44 "is formed in the hub 44. The communication hole 44" is formed to pass through the outer circumferential surface of the hub 44 so as to communicate with the shaft hole 44 ', one side of which is an opening. Is formed. The communication hole 44 ″ serves as a passage through which the refrigerant flows into the rotation shaft 40.

A plurality of shoes 46 surrounding the edge of the swash plate 42 is installed. The shoe 46 is configured to move along the edge of the swash plate 42.

The cylinder bore 34 is installed to enable a linear reciprocating movement of the piston 50 for compressing the refrigerant. The piston 50 is connected to the swash plate 42 with the shoe 46 therebetween to perform a linear reciprocating motion as the swash plate 42 rotates.

The valve unit 60 is installed between the front housing 10 and the front cylinder block 30 and between the rear housing 20 and the rear cylinder block 30 '. The valve unit 60 selectively communicates the cylinder bore 34 with the discharge chambers 12 and 22 to control the discharge of the compressed refrigerant.

Mufflers 61 are formed in the front and rear cylinder blocks 30 and 30 ′ so as to communicate with the discharge chambers 12 and 22. The muffler 61 serves to reduce pulsation and noise of the refrigerant.

It will be described that the refrigerant is compressed in the swash plate compressor according to the prior art having such a configuration.

When the rotary shaft 40 is rotated by a driving force transmitted from the outside, the swash plate 42 is rotated together with the rotary shaft 40. As the swash plate 42 rotates, the piston 50 linearly reciprocates in the cylinder bore 34.

Thus, when the piston 50 linearly reciprocates in the cylinder bore 34, the refrigerant delivered to the swash plate chamber 31 passes through the inlet 41 ′ through the communication hole 44 ″ of the hub 44. ) And enters the flow path 41 of the rotation shaft 40. The refrigerant entering the flow path 41 of the rotation shaft 40 passes through the outlet 41 "of the rotation shaft 40. Go inside of. Of course, the refrigerant may flow into the cylinder bore 34 only when the outlet 41 ″ communicates with the cylinder bore 34. Thus, the inflow of the refrigerant into the cylinder bore 34 may be performed. To the cylinder bores 34 in order.

The refrigerant entering the cylinder bore 34 is compressed by the linear reciprocating motion of the piston 50. When the compression is completed, the refrigerant is discharged into the discharge chamber 22 by the valve assembly and transferred to the muffler 61. After the noise and pulsation is reduced and transmitted to the outside of the compressor (1).

However, the swash plate type compressor according to the related art as described above has the following problems.

That is, in the conventional compressor 1, the piston 50 compresses the refrigerant while linearly reciprocating in the cylinder bore 34. Therefore, how fast the piston 50 is operated determines whether the compressor 1 can be operated at high speed. However, it is difficult to make the operating speed faster with the size of the current piston 50, and there is a problem that the compressor 1 cannot be operated at high speed.

In order to solve this problem, it is necessary to miniaturize the piston 50. However, when the piston 50 is miniaturized, a problem arises in that the compression capacity is reduced and the refrigerant cannot be compressed to a desired value at one time.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to perform the refrigerant compression in the compressor in two divisions.

Another object of the present invention is to relatively reduce the size of the piston while compressing the refrigerant over a second time in the compressor to a predetermined pressure.

According to a feature of the present invention for achieving the object as described above, the present invention comprises a front housing and a rear housing each having a discharge chamber is formed on the inner surface and to form at least both ends of the swash plate compressor; A cylinder block located between the front housing and the rear housing and having a shaft support hole formed therethrough, the cylinder block having a cylinder bore and a swash plate chamber therein; A rotating shaft rotatably installed to penetrate the cylinder block and having a flow path for transmitting a working fluid to the cylinder bore; A swash plate installed on the rotating shaft to rotate together; And a plurality of pistons connected to each other between the swash plate and the shoe and linearly reciprocating in the cylinder bore according to the rotational movement of the swash plate, and rotating in the first compression chamber formed in the rear housing. And a compression unit which is rotated together with the rotary shaft to compress the refrigerant to the primary and transfer the refrigerant to the flow path of the rotary shaft.

The compression unit is a propeller, the propeller is installed to be integrally rotated by a connecting support to the rotating shaft, the connecting support is inserted into the body formed with a communication path for communicating the flow path between the first compression chamber and the rotating shaft through the inside; It comprises a connecting leg which is formed to be inclined around the one end of the insert body, and the shaft hub is provided at the front end of the connecting leg, the center of rotation of the propeller is connected.

The suction passage penetrating the inside of the rear housing to deliver the refrigerant to the first compression chamber is formed.

The suction passage communicates with a suction port formed in the rear cylinder block or the rear housing to receive the refrigerant from the outside.

In the swash plate compressor according to the present invention, the following effects can be obtained.

That is, in the present invention, the refrigerant introduced into the compressor is first compressed by using a propeller and then secondly compressed by using a piston in the compression chamber. Thus, the refrigerant is firstly pressurized to some degree by the propeller, and compression is performed by the piston to be secondarily compressed to a predetermined pressure.

Therefore, the degree of compression that the piston must perform is relatively small, thereby miniaturizing the piston. When the size of the piston can be reduced in this way, the inertia during the linear reciprocating motion of the piston is reduced by that much, and the piston can be linearly reciprocated at a higher speed. As a result, according to the present invention, it is possible to operate the piston of the compressor at a high speed, it is possible to provide a compressor that operates at a higher speed.

Hereinafter, a preferred embodiment of the swash plate compressor according to the present invention will be described in detail with reference to the accompanying drawings.

2 shows a schematic cross-sectional view of a configuration of a preferred embodiment of the swash plate compressor according to the present invention. According to this, the appearance and skeleton of the swash plate compressor 100 is formed by the front housing 110, the rear housing 120, the front cylinder block 130 and the rear cylinder block 130 '. The front housing 110 and the rear housing 120 are installed at both ends after the front cylinder block 130 and the rear cylinder block 130 'are combined. The front housing 110 and the rear housing 120 are fastened to each other by a fixing bolt S together with the front cylinder block 130 and the rear cylinder block 130 '. That is, the fixing bolt S passes through both the front housing 110 and the rear housing 120 and the front cylinder block 130 and the rear cylinder block 130 '. Unlike the present embodiment, the front cylinder block 130 and the rear cylinder block 130 'may be seated and coupled inside the front housing 110 and the rear housing 110.

The front housing 110 is formed in a substantially disk shape and has a boss portion 112 formed to protrude in the center thereof, and penetrates the center of the front housing 110 including the center of the boss portion 112. Shaft through hole 112 ′ is installed that the rotating shaft 140 will be described later is formed. In the front housing 110, the discharge chamber 114 is formed on the surface of the front housing block 130 that faces the ring-shaped region. The discharge chamber 114 is selectively communicated with the cylinder bore 134 provided in the front cylinder block 130 and the valve unit 160 to be described later.

The rear housing 120 is mounted on one surface of the rear cylinder block 130 '. In the rear housing 120, a discharge chamber 124 is formed on a surface of the rear housing 120 facing the rear cylinder block 130 ′ over an approximately ring-shaped area. The discharge chamber 124 is selectively communicated with the cylinder bore 134 provided in the rear cylinder block 130 'and the valve unit 160 to be described later.

The indented portion is formed on the surfaces coupled to each other of the front cylinder block 130 and the rear cylinder block 130 'so that the swash plate chamber 131 is formed. In the swash plate chamber 131, the swash plate 144 provided on the rotary shaft 140, which will be described later, is positioned and rotated. At the center of the front cylinder block 130 and the rear cylinder block 130 ', the shaft support hole 132 is formed by penetrating the front cylinder block 130 and the rear cylinder block 130' together. The shaft support hole 132 is installed through the rotating shaft 140 to be described later. The inner diameter of the shaft support hole 132 is designed to be in close contact with the outer surface of the rotary shaft 140.

The front cylinder block 130 and the rear cylinder block 130 'is formed with a plurality of cylindrical cylinder bores 134 around the shaft support hole 132 in the longitudinal direction of the shaft support hole 132. The cylinder bore 134 is formed at a position corresponding to the front cylinder block 130 and the rear cylinder block 130 ', respectively. Suction passages 136 are formed in the front cylinder block 130 and the rear cylinder block 130 'as many as the number of cylinder bores 134, respectively. One end of the suction passage 136 communicates with the cylinder bore 134, and the other end thereof communicates with the shaft support hole 132. The suction passage 136 serves to communicate the flow passage 142 of the rotating shaft 140 and the cylinder bore 134 to be described below. Therefore, the refrigerant transferred through the flow passage 142 of the rotation shaft 140 through the suction passage 136 is transferred to the cylinder bore 134.

Discharge passages 138 are formed in the front cylinder block 130 and the rear cylinder block 130 ′ so as to communicate with the discharge chambers 114 and 124. The discharge passage 138 serves as a passage for discharging the refrigerant compressed in the cylinder bore 134 to the outside.

The rotating shaft 140 is installed to be rotatable through the shaft through hole 112 ′ and the shaft supporting hole 132. The rotary shaft 140 is a portion that rotates by receiving a driving force for compressing the refrigerant in the compressor (100).

The flow passage 142 through which the refrigerant flows is formed in the rotation shaft 140. The flow path 142 is formed long in the longitudinal direction of the rotation shaft 140 inside the rotation shaft 140. An inlet of the flow path 142 is one end of the rotary shaft 140, that is, an end corresponding to the first compression chamber 170 of the rear housing 120.

An outlet 142 ′ of the flow path 142 is formed through the rotation shaft 140 to be opened to the outer circumferential surface of the rotation shaft 140 so as to communicate with the suction passage 136. The refrigerant introduced into the flow path 142 through the outlet 142 'flows into the cylinder bore 134. The outlet 142 ′ is opened to the outer surface of the rotation shaft 140 so as to communicate between the flow path 142 and the outside of the rotation shaft 140. The outlets 142 ′ are formed at both ends of the rotation shaft 140, respectively, and the positions of the outlets 142 ′ are appropriately adapted to the process of compressing the refrigerant flowing in each cylinder bore 134.

A swash plate 144 is coupled to a portion of the rotary shaft 140 located in the swash plate chamber 131. The swash plate 144 is coupled to the rotary shaft 140 inclined at a predetermined angle with respect to the longitudinal direction of the rotary shaft 140. The swash plate 144 rotates together with the rotation shaft 140 to linearly reciprocate the piston 150 to be described later in the cylinder bore 134. The center of the swash plate 144 is provided with a cylindrical hub 146. A shaft hole 146a is formed at the center of the hub 146 so that the rotating shaft 140 penetrates and is coupled to the shaft hole 146a.

Shoe 147 is provided on each of both edges of the swash plate 144. The shoe 147 is formed in a substantially hemispherical shape to move along the edge of the swash plate 144 to transfer power between them while minimizing the friction between the swash plate 144 and the piston 150 to be described later. .

Bearings 148 are installed on both side surfaces of the hub 146. The bearing 148 allows the rotary shaft 140 to which the swash plate 144 is coupled to rotate smoothly in the swash plate chamber 131. In particular, the bearing 148 supports the force acting in the longitudinal direction to the rotary shaft 140 to allow the rotary shaft 140 to rotate smoothly.

The piston 150 is installed inside the cylinder bore 134. The piston 150 is formed in a substantially cylindrical shape corresponding to the inside of the cylinder bore 134, thereby compressing the refrigerant introduced into the cylinder bore 134. For reference, when compression occurs in the cylinder bore 134 where one end of one piston 150 is positioned, the suction process is performed in the cylinder bore 134 where the other end is positioned. The piston 150 is coupled to the center thereof with the swash plate 144 and the shoe 147 interposed therebetween, thereby linearly reciprocating in the cylinder bore 134 according to the rotation of the swash plate 144. .

A valve unit 160 is installed between the front housing 110 and the front cylinder block 130 and between the rear housing 120 and the rear cylinder block 130 ', respectively. The valve unit 160 controls the discharge of the refrigerant introduced into the cylinder bore 134 to the outside of the cylinder bore 134.

The skeleton of the valve unit 160 is formed by a valve plate 161 having a substantially disc shape. Discharge holes 163 are formed in the valve plate 161 at positions corresponding to the respective cylinder bores 134. Discharge leads 164 are used to selectively open and close the discharge holes 163, respectively. The discharge lead 164 is formed of an elastically deformable material and elastically deforms according to the pressure of the refrigerant in the cylinder bore 134 to open the discharge hole 163. A communication hole 167 is formed at a position corresponding to the discharge passage 138 in the valve plate 161. The communication hole 167 communicates the discharge chambers 114 and 124 with the discharge passage 138.

A muffler 169 is formed in the front cylinder block 130 and the rear cylinder block 130 ′ so as to communicate with the discharge passage 138. The muffler 169 serves to reduce pulsation and noise of the refrigerant. The muffler 169 is formed with a discharge port 169 'for discharging a refrigerant to a condenser (not shown) connected to the swash plate compressor 100. Of course, the muffler 169 may be formed at only one side of the front cylinder block 130 or the rear cylinder block 130 '.

Meanwhile, a compression unit for first compressing the refrigerant delivered to the cylinder bore 134 will be described. A first compression chamber 170 is formed at the center of one surface of the rear housing 120, and a propeller 172 is installed therein. The propeller 172 primarily serves to compress the refrigerant delivered into the first compression chamber 170. The propeller 172 is rotated by the rotation shaft 140.

To this end, the connecting shaft 174 is installed on the rotary shaft 140. The connecting support 174 is provided with a cylindrical insertion body 176, the insertion body 176 is installed to be pressed or fixed to the inlet of the flow path 142 of the rotary shaft 140. A communication path 176 ′ is formed through the interior of the insertion body 176 to communicate the first compression chamber 170 and the flow path 142.

A plurality of connecting legs 178 extend inclined along one end of the insertion body 176 to meet the shaft hub 180. The refrigerant in the first compression chamber 170 is delivered to the communication hole 176 'in a compressed state by the propeller 172 through the space between the connection legs 178. The shaft hub 180 is a portion where the rotation center of the propeller 172 is located.

Here, a path through which the refrigerant is delivered to the first compression chamber 170 will be described. The refrigerant delivered through the suction port 184 and the suction passage 182 is sucked into the first compression chamber 170. In the illustrated embodiment, the suction port 184 is formed at one side of the rear cylinder block 130 ', and the suction passage 182 is formed through the rear cylinder block 130' and the rear housing 120. It is. Therefore, the refrigerant delivered into the compressor 100 through the suction port 184 is transferred to the first compression chamber 170 via the suction passage 182.

For reference, the suction passage 182 is formed so as not to interfere with the discharge chamber 124. That is, the discharge chamber 124 is formed along the edge side of one surface of the rear housing 120, the first compression chamber 170 is formed in the central portion of the rear housing 120. Accordingly, in order to prevent the suction passage 182 from interfering with the discharge chamber 124 in the rear housing 120, the rear housing through the portion of the discharge chamber 124 is made shallower than other portions. The suction passage 182 may be formed inside the 120. Alternatively, a portion of the rear housing 120 may be cut off without forming the discharge chamber 124 in an annular shape over the entire surface of the rear housing 120, and the suction passage 182 may be formed through the portion. In the illustrated embodiment, a portion of the discharge chamber 124 is indicated by a dotted line while overlapping the suction passage 182 and the discharge chamber 124 for convenience of illustration.

On the other hand, the suction port 184 may be formed in the rear housing 120. That is, both the suction port 184 and the suction passage 182 may be formed in the rear housing 120.

Hereinafter will be described in detail the operation process of the swash plate compressor according to the present invention having the configuration as described above.

When the rotary shaft 140 is rotated by a driving force transmitted from the outside, the swash plate 144 is rotated together with the rotary shaft 140. As the swash plate 144 rotates, the piston 150 linearly reciprocates in the cylinder bore 134.

In addition, the propeller 172 installed at one end of the rotary shaft 140 also rotates along with the rotary shaft 140. Rotation of the propeller 172 allows the refrigerant in the first compression chamber 170 to be first compressed and transferred to the flow path 142 of the rotation shaft 140 through the communication path 176 '.

That is, the refrigerant delivered to the first compression chamber 170 through the suction port 184 and the suction passage 182 is compressed by the rotation of the propeller 172 to pass through the communication passage 176 '. The flow path 142 is transmitted.

On the other hand, when the rotating shaft 140 rotates and the outlet 142 ′ of the rotating shaft 140 communicates with the suction passage 136 of the cylinder bore 134, the refrigerant introduced into the flow path 142 is in the cylinder bore. 134 flows into the interior. For reference, the refrigerant is sucked into the cylinder bore 134 when the piston 150 is located at the bottom dead center of the corresponding cylinder bore 134.

The refrigerant is transferred to the cylinder bore 134, and the refrigerant is secondarily compressed while the piston 150 of the corresponding cylinder bore 134 moves in the direction of the valve plate 161. As the refrigerant is compressed, the pressure inside the cylinder bore 134 is relatively increased, and the discharge hole 163 is opened while the tip of the discharge lead 164 is elastically deformed.

When the discharge hole 163 is opened, the compressed refrigerant is delivered to the discharge chambers 114 and 124, and the refrigerant delivered to the discharge chambers 114 and 124 passes through the discharge passage 138 through the communication hole 167, and the muffler is discharged. It is delivered to the 169 is delivered to the condenser through the discharge port (169 ') of the muffler (169).

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self-evident.

For example, the illustrated embodiment takes a fixed swash plate type compressor using a double head piston as an example, but the present invention can be applied to a variable swash plate type compressor as well as a fixed swash plate type compressor having various types of pistons.

In the illustrated embodiment, the propeller 172 is used to first compress the refrigerant, but the present invention is not limited thereto. That is, as long as it can compress a gaseous refrigerant | coolant by rotation, it may be anything.

In addition, in the embodiment of the present invention, although the suction passage 182 for transferring the refrigerant to the first compression chamber 172 is connected to the first compression chamber 172 at the edge of the rear housing 120, the first compression chamber The suction passage 182 may be formed to be opened to the outer surface of the rear housing 120 corresponding to the 170. In this case, the suction port 184 should also be formed on the outer surface of the rear housing 120.

1 is a cross-sectional view showing the internal configuration of a swash plate compressor according to the prior art.

Figure 2 is a schematic cross-sectional view showing the internal configuration of a preferred embodiment of the swash plate compressor according to the present invention.

Explanation of symbols on the main parts of the drawings

100: swash plate compressor 110: front housing

112: boss portion 112 ': shaft hole

114: discharge chamber 120: rear housing

124: discharge chamber 130: front cylinder block

130 ': rear cylinder block 131: swashroom

132: shaft support hole 134: cylinder bore

136: suction passage 138: discharge passage

140: rotation axis 142: flow path

144: Saphan 146: the hub

147: shoe 148: bearing

150: piston 160: valve unit

161: valve plate 163: discharge hole

164: discharge lead 167: communication hole

169: muffler 169 ': discharge port

170: first compression chamber 172: propeller

174: connection support 176: insertion body

176 ': Communication route 178: Connecting leg

180: shaft hub 182: suction passage

184: suction port S: fixing bolt

Claims (4)

Discharge chambers 114 and 124 are formed on the inner surface, respectively, and the front housing 110 and the rear housing 120 to form an outer appearance of at least both ends of the swash plate compressor; Located between the front housing 110 and the rear housing 120 and the shaft support hole 132 is formed through the center, the cylinder block 130, 130 having a cylinder bore 134 and the swash plate chamber 131 therein '); A rotating shaft 140 rotatably installed to penetrate the cylinder blocks 130 and 130 'and having a flow path 142 for transmitting a working fluid to the cylinder bore 134; A swash plate 144 installed on the rotating shaft 140 to rotate together; And, Is connected to the swash plate 144 and the shoe 147 therebetween and comprises a plurality of piston 150 for linear reciprocating motion in the cylinder bore 134 according to the rotational movement of the swash plate 144, Compressed to rotate in the first compression chamber 172 formed inside the rear housing 120 to rotate with the rotating shaft 140 to compress the refrigerant to the primary to pass to the flow path 142 of the rotating shaft 140. Swash plate compressor characterized in that it comprises a portion. According to claim 1, wherein the compression unit is a propeller 172, the propeller 172 is installed to be integrally rotated by the connecting support 174 to the rotation shaft 140, The connecting support 174 has an insertion body 176 having a communication path 176 ′ which penetrates through and communicates the flow path 142 of the first compression chamber 170 and the rotary shaft 104 with the insertion body 176. A connecting leg 178 formed around the one end of the body 176 is formed to be inclined, and the shaft hub 180 is provided at the front end of the connecting leg 178, the center of rotation of the propeller 172 is connected; Swash plate compressor, characterized in that configured. The swash plate type compressor of claim 1 or 2, wherein a suction passage (182) is formed through the interior of the rear housing (120) to transfer the refrigerant to the first compression chamber (170). 4. The swash plate compressor of claim 3, wherein the suction passage 182 communicates with the suction port 184 formed in the rear cylinder block 130 'or the rear housing 120 to receive refrigerant from the outside. .

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