KR101166286B1 - Swash plate type compressor - Google Patents

Abstract

The present invention relates to a swash plate type compressor. In the present invention, an axial hole 121 is formed through the center of the front and rear cylinder blocks 120 and 120 ', and a plurality of cylinder bores 122 and 122' surrounding the axial hole 121 are formed. Inside the cylinder bores 122 and 122 ', a piston 170 is installed so as to reciprocate linearly so that both ends of the piston 170 compress the refrigerant in the cylinder bores 122 and 122'. The piston 170 is formed to communicate with the cylinder bores 122 and 122 'and the refrigerant compressed once in the cylinder bore 122' of the rear cylinder block 120 is supplied to the front cylinder block 120 ' And a coolant passage 172 for transferring the coolant to the cylinder bore 122 is formed. According to the present invention having the above-described structure, the refrigerant passage 172 is formed in the piston 170, and the refrigerant sucked into the cylinder bore 122 'of the rear cylinder block 120' Compressed and compressed refrigerant passes through the refrigerant passage 172 and is discharged to the cylinder bore 122 of the front cylinder block 120 and is secondarily compressed by the piston 170. Thus, So that the compression ratio is reduced compared to when the refrigerant is compressed at a time, thereby improving the efficiency of the compressor.

Compressor, cylinder block, cylinder bore, refrigerant, piston

Description

[0001] Swash plate type compressor [0002]

The present invention relates to a swash plate type compressor, and more particularly, to a swash plate type compressor in which a plurality of pistons provided respectively in a plurality of cylinder bores of a cylinder block are linearly reciprocated using a swash plate installed on a rotary shaft to compress refrigerant.

The compressor used in the automobile air conditioning system sucks the evaporated refrigerant from the evaporator and transfers it to the condenser at a high temperature and high pressure state which is easy to be liquefied.

In such a compressor, there is a reciprocating type in which compression is performed while reciprocating motion is actually performed for compressing the refrigerant, and a rotary type in which compression is performed while rotating. In the reciprocating type, there is a crank type in which a driving force of a driving source is transmitted to a plurality of pistons using a crank, a swash plate type in which the swash plate is transmitted to a rotary shaft, and a wobble plate type in which a wobble plate is used. Rotary types include rotary rotary axes with vane rotary vanes, scrolling with rotary scrolls and fixed scrolls.

1 is a sectional view of a general swash plate type compressor.

As shown in the figure, the skeleton and the exterior of the compressor 10 are formed by the front head 11, the front cylinder block 12 and the rear cylinder block 12 ', and the rear head 28. These are arranged and joined in the order of the front head 11, the front cylinder block 12, the rear cylinder block 12 'and the rear head 28 in this order.

The front head 11 has a substantially cylindrical shape, and a discharge chamber 11a is formed therein. The discharge chambers 11a are opened toward the front cylinder block 12, respectively. The discharge chamber 11a is formed over a substantially ring-shaped area. The discharge chamber 11a is formed to be selectively connected to each cylinder bore 12a of the front cylinder block 12 through a valve assembly 14 described below.

An axial hole (O) is formed through the center of the front head (11). The shaft hole (O) is provided with a rotation shaft (24) to be described below.

An axial hole 13 is formed through the front cylinder block 12 and the rear cylinder block 12 '. A shaft (24) passes through the shaft hole (13). The inner diameter of the shaft hole 13 is designed so that the outer surface of the rotary shaft 24 can be closely contacted.

The front cylinder block 12 and the rear cylinder block 12 'are coupled to the front head 11 and the rear head 28, respectively. A plurality of cylindrical cylinder bores 12a are formed in the front cylinder block 12 and the rear cylinder block 12 'in the direction of forming the shaft hole 13 with the shaft hole 13 as the center . Of course, the cylinder bore 12a is formed at a position corresponding to the front cylinder block 12 and the rear cylinder block 12 ', respectively. The cylinder bore 12a and the shaft hole 13 are connected to each other through a suction passage 13 '. The suction passage 13 'allows the refrigerant transferred through the inside of the rotary shaft 24 to be transmitted to the cylinder bore 12a.

Discharge passages (not shown) are formed in the front cylinder block 12 and the rear cylinder block 12 'so as to communicate with the discharge chambers 11a and 28a of the front head 11 and the rear head 28, respectively. The discharge passage serves as a passage for discharging the refrigerant compressed in the cylinder bore 12a to the outside.

A flow of coolant is controlled between the discharge chamber 11a and the cylinder bore 12a between the front head 11 and the front cylinder block 12 and between the rear head 28 and the rear cylinder block 12 ' A valve assembly 14 is provided. That is, the valve assembly 14 controls the refrigerant flow from the cylinder bore 12a to the discharge chamber 11a.

The valve assembly 14 is provided with a valve plate 15. The valve plate 15 is formed in a substantially disc shape and has a discharge hole 15 'at a position corresponding to each cylinder bore 12a.

A discharge lead 17 is provided on one surface of the valve plate 15 facing the front head 11 and on one surface of the valve plate 15 facing the rear head 28. The discharge lead 17 is elastically deformable and is elastically deformed according to the internal pressure of the cylinder bore 12a to open and close the discharge hole 15 '.

A communication hole (not shown) is formed in the valve plate 15 at a position corresponding to the discharge passage. And the communication hole is connected to the discharge passage.

A retainer (18) is provided on one surface of the valve plate (15) facing the front head (11). The retainer 18 is formed in a substantially plate shape, and is formed by being bent at a predetermined angle toward the discharge chamber 11a. The retainer 18 prevents the discharge lead 17 from excessively flowing toward the inside of the discharge chamber 11a of the front head 11 and the discharge chamber 28a of the rear head 28 by the discharge pressure of the refrigerant And is a part for preventing elastic deformation.

The front cylinder block 12 and the rear cylinder block 12 'are formed with recessed portions on the surfaces to be coupled with each other to constitute the swash plate chamber 23. A swash plate (26) provided on the rotary shaft (24) is rotatably positioned in the swash plate chamber (23).

A rotating shaft 24 is provided to pass through the center of the front head 11, the front cylinder block 12 and the rear cylinder block 12 '. A flow path 24 'through which the refrigerant flows is formed in the rotating shaft 24. The flow path 24 'is formed long in the longitudinal direction of the rotary shaft 24 inside the rotary shaft 24. An inlet 24a and an outlet 24b are formed on the outer surface of the rotary shaft 24. The inlet 24a connects the swash plate chamber 23 and the oil passage 24 'and the outlet 24b connects the suction passage 13' of the front cylinder block 12 and the rear cylinder block 12 ' In the present embodiment. The position of the outlet 24b should be formed in accordance with the compression order of the refrigerant flowing in each of the cylinder bores 12a.

A shaft shaft 25 is inserted into one side of the rotating shaft 24 and is in close contact with the inner surface of the shaft hole O of the front head 11. [ The shaft shaft 25 serves to prevent the refrigerant from leaking between the rotary shaft 24 and the axial hole O. [ The shaft end work (25) is formed of a rubber material capable of elastic deformation.

A substantially disk-shaped swash plate 26 is provided on the rotating shaft 24 so as to be inclined with respect to the extending direction of the rotating shaft 24. A plurality of shoe (27) is provided to surround the edge of the swash plate (26). The shoe (27) is configured to move along an edge of the swash plate (26).

On the other hand, a piston 30 is installed in the cylinder bore 12a so as to reciprocate linearly. The piston 30 has a substantially cylindrical shape corresponding to the inside of the cylinder bore 12a and both ends thereof are positioned at the cylinder bore 12a of the front cylinder block 12 and the rear cylinder block 12 ' That is, both ends of each of the pistons 30 serve to compress the refrigerant in the cylinder bore 12a. The intermediate portion of the piston 30 is engaged with the shoe 27 and reciprocates linearly in accordance with the rotation of the swash plate 26.

The rear head 28 is mounted on one side of the rear cylinder block 12 '. The rear head 28 is provided with a discharge chamber 28a. The discharge chamber 28a is formed over an approximately ring-shaped area. Each of the discharge chambers 28a is opened toward the rear cylinder block 12 '. The discharge chamber 28a is selectively connected to the cylinder bores 12a formed in the rear cylinder block 12 'through a valve plate 15.

A pulley (40) is rotatably installed on one side of the front head (11). The pulley 40 is formed in a substantially cylindrical shape. The pulley 40 receives the driving force of the engine through a belt (not shown) and is rotated.

A field coil 41 is embedded in the pulley 40. The field coil 41 generates a magnetic attraction flux when power is applied to cause the disk 46 to be described below to be brought into close contact with the friction surface 40 'of the pulley 40.

A hub 43 is installed at one end of the rotary shaft 24 and a damper 44 is installed at the hub 43. The damper 44 absorbs the shock generated when the power is transmitted between the rotary shaft 24 and the pulley 40. The damper 44 is provided with a disk 46 movably installed at a position facing the friction surface 40 'of the pulley 40.

The operation of the compressor having such a structure will be described. When the driving force of the engine is transmitted to the pulley 40 through the belt, the pulley 20 is rotated. However, if power is not applied to the field coil 41, the disk 46 is not brought into close contact with the friction surface 40 'of the pulley 40, so that the rotation shaft 24 does not rotate.

If the compressor needs to be driven due to the necessity of operating the air conditioning system in such a state, the control system of the user or the vehicle provides a signal for the operation of the air conditioning system. When the operation of the air conditioning system is started and the refrigerant needs to be compressed, the field coil 41 generates power to the field coil 41 to generate the suction flux.

When power is applied to the field coil 41, the disk 46 is brought into close contact with the friction surface 40 'of the pulley 40 by the attracting magnetic flux of the field coil 41. Accordingly, the rotational force of the pulley 40 is transmitted to the rotary shaft 24 through the disk 46, the damper 44, and the hub 43.

When the rotational force of the pulley 40 is transmitted to the rotary shaft 24 as described above, the rotary shaft 24 rotates and linearly reciprocates the piston to perform compression of the refrigerant.

At this time, as the rotary shaft 24 rotates, the flow passage 24 'inside the rotary shaft 24 is connected to the cylinder bore 12a through the outlet 24b and the suction passage 13'. The connection between the flow path 24 'and the cylinder bore 12a allows the refrigerant sucked into the swash plate chamber 23 to be transferred to the cylinder bore 12a. For reference, the refrigerant is sucked into the cylinder bore 12a when the piston 30 is located at the bottom dead center of the corresponding cylinder bore 12a. When the refrigerant is delivered to the cylinder bore 12a, the piston 30 of the corresponding cylinder bore 12a moves in the direction of the valve plate 15 and the refrigerant is compressed.

Thus, when the refrigerant is compressed in the cylinder bore 12a, the pressure inside the cylinder bore 12a becomes relatively high, and the refrigerant is discharged to the discharge chambers 11a and 28a. The refrigerant discharged to the discharge chambers 11a and 28a is transferred to a condenser (not shown) through an external discharge port.

The refrigerant transferred to the condenser through the discharge port passes through a condenser (not shown), an expansion valve (not shown), and an evaporator (not shown), and then is returned to the compressor. In the compressor, the refrigerant is compressed by repeating the process described above.

However, the above-described conventional compressor has the following problems.

The rotation speed of the rotary shaft 24 depends on the amount of movement transmitted by the engine. When the rotation speed of the rotary shaft 24 is increased, the refrigerant compressed in the compressor 10 is also quickly discharged.

That is, when the piston 30 moves from the top dead center to the top dead center in the cylinder bore 12a, the refrigerant sucked into the cylinder bore 12a is compressed at one time .

At this time, in order to satisfy the compression ratio (discharge pressure / suction pressure) required in the air conditioning system of the automobile, the piston 30 must compress the refrigerant sucked in the cylinder bore 12a at one time, It is necessary to continue to move while overcoming the pressure difference within the pressure chamber 12a at a time. Therefore, since it is difficult for the piston 30 to move smoothly in the cylinder bore 12a, the performance of the compressor is deteriorated.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the problems of the prior art as described above, and to reduce the compression ratio by compressing the refrigerant sucked into the cylinder bores in two portions.

According to an aspect of the present invention for achieving the above-mentioned object, the present invention is characterized in that a shaft support hole is formed to penetrate through a center, a plurality of cylinder bores are formed around the shaft support hole, A cylinder block into which the swash plate chamber is formed; A front head installed at one end of the cylinder block and having a shaft hole formed through the center thereof; A rear head installed at the other end of the cylinder block and having a suction chamber in which a refrigerant is sucked; A cylinder block having a shaft bore formed therein and a shaft hole formed in the cylinder block and a shaft hole formed in the cylinder block, ; A swash plate mounted on the rotary shaft so as to be inclined and integrally rotated and positioned in the swash plate chamber; And a piston coupled to an edge of the swash plate and linearly reciprocating in the cylinder bore in accordance with a rotational movement of the swash plate, the both ends of the piston compressing the refrigerant in the cylinder bore, Wherein a refrigerant discharged from the cylinder block is supplied to the cylinder block through the cylinder block and the cylinder block, The refrigerant passage communicating with the other side of the cylinder bore of the cylinder bore is formed to pass through.

And a piston discharge lead which is elastically deformed according to an internal pressure of the cylinder bore and the refrigerant passage to open and close the refrigerant passage is provided at one end of the piston facing the discharge chamber.

The front head is formed with a discharge chamber through which refrigerant is discharged. The cylinder bore of the rear cylinder block and the shaft hole are connected by a suction passage, and the suction passage is communicated with a flow passage of the rotary shaft.

In the present invention, the refrigerant passage is formed in the piston that compresses the refrigerant by linearly reciprocating in the cylinder bores of the front and rear cylinder blocks. The refrigerant sucked into the cylinder bore of the rear cylinder block is compressed once by the piston, The refrigerant passes through the refrigerant passage, is discharged to the cylinder bore of the front cylinder block, and is secondly compressed by the piston. Therefore, since the refrigerant is divided into two portions and compressed, the compression ratio is reduced more than when the refrigerant is compressed at one time in the cylinder bore, and the piston can smoothly reciprocate in the cylinder bore smoothly. .

Particularly, in the present invention, the refrigerant sucked into the cylinder bore is discharged to the cylinder bore through the refrigerant passage formed in the piston, and is compressed by the piston. At this time, the pressure of the refrigerant discharged back into the cylinder bore, In a direction parallel to the direction of movement from the bottom dead center to the top dead center, thereby facilitating the movement of the piston. Accordingly, since the force for driving the compressor is relatively reduced, the efficiency of the compressor is relatively improved.

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

2 is a cross-sectional view of a preferred embodiment of a swash plate compressor according to the present invention.

As shown in the drawing, the skeleton and the exterior of the compressor 100 are formed by the front head 110, the front cylinder block 120 and the rear cylinder block 120 ', and the rear head 150. These are arranged and joined in the order of the front head 110, the front cylinder block 120, the rear cylinder block 120 'and the rear head 150 in this order.

The front head 110 has a substantially cylindrical shape, and a discharge chamber 110a is formed therein. The discharge chamber (110a) is opened toward the front cylinder block (120). The discharge chamber 110a is formed over a substantially ring-shaped area. The discharge chamber 110a is formed to be selectively connected to the respective cylinder bores 120a of the front cylinder block 120 through a valve assembly 130 described below.

A shaft hole (O) is formed through the center of the front head (110). The shaft hole (O) is provided with a rotation shaft (160) to be described below.

A shaft support hole 121 is formed through the front cylinder block 120 and the rear cylinder block 120 '. The rotary shaft 160 passes through the shaft hole 121. The inner diameter of the shaft hole 121 is designed so that the outer surface of the rotary shaft 160 can be closely contacted.

The front cylinder block 120 and the rear cylinder block 120 'are coupled to the front head 110 and the rear head 150, respectively. A plurality of cylindrical cylinder bores 122 and 122 'are formed in the front cylinder block 120 and the rear cylinder block 120' in the forming direction of the axial hole 121 with the axial hole 121 as the center. do. Of course, the cylinder bores 122 and 122 'are formed at positions corresponding to the front cylinder block 120 and the rear cylinder block 120', respectively. The cylinder bore 122 'of the rear cylinder block 120 and the axial hole 121 are connected to each other through a suction passage 123. The suction passage 123 allows the refrigerant transferred through the inside of the rotating shaft 160 to be transmitted to the cylinder bore 122 'of the rear cylinder block 120, respectively.

Discharge passages (not shown) are formed in the front cylinder block 120 to communicate with the discharge chambers 110a of the front head 110, respectively. The discharge passage serves as a passage for discharging the refrigerant compressed in the cylinder bores 122 and 122 'to the outside.

A valve assembly 130 for controlling the flow of the refrigerant between the discharge chamber 110a and the cylinder bore 122 of the front cylinder block 120 is provided between the front head 110 and the front cylinder block 120 do. That is, the valve assembly 130 controls the refrigerant flow from the cylinder bore 122 of the front cylinder block 120 to the discharge chamber 110a.

The valve assembly 130 is provided with a valve plate 131. The valve plate 131 has a substantially disc shape and a discharge hole 131 'is formed at a position corresponding to each of the cylinder bores 122 and 122'.

A discharge lead 132 is provided on one surface of the valve plate 131 facing the front head 110. The discharge lead 132 is elastically deformable and is elastically deformed according to the internal pressure of the cylinder bore 122 of the front cylinder block 120 to open and close the discharge hole 131 '.

A communication hole (not shown) is formed in the valve plate 140 at a position corresponding to the discharge passage. And the communication hole is connected to the discharge passage.

A retainer 133 is provided on one surface of the valve plate 140 facing the front head 110. The retainer 133 is formed in a substantially plate shape and is bent by a predetermined angle toward the discharge chamber 110a. The retainer 133 is a portion for preventing the discharge lead 132 from being excessively elastically deformed toward the inside of the discharge chamber 110a of the front head 110 by the discharge pressure of the refrigerant.

The front cylinder block 120 and the rear cylinder block 120 'are formed with recessed portions on the surfaces to be coupled to each other to form the swash plate chamber 134. In the swash plate chamber 134, a swash plate 165 mounted on the rotating shaft 160 is rotatably positioned.

A suction chamber 151 is formed in the rear head 150. The suction chamber 151 selectively communicates with the cylinder bores 122 and 122 '. The suction chamber 122 is formed in a region of the rear head 150 corresponding to the center of a surface facing the rear cylinder block 120 '. The suction chamber 151 serves to transfer the refrigerant to be compressed into the cylinder bores 122 and 122 '. The suction chamber 151 transfers the refrigerant to the suction passage 123 through the oil passage 161 formed inside the rotary shaft 160. Reference numeral 152 denotes a suction port for transferring the refrigerant from the outside of the compressor 100 to the suction chamber 151.

The bolts b are fastened through the front head 110 to fasten the front cylinder block 120 and the rear cylinder block 120 'and the rear head 150 to each other. A plurality of the bolts b penetrate the front head 110 and the edges of the front cylinder block 120 and the rear cylinder block 120 '

A rotating shaft 160 is installed through the center of the front head 110, the front cylinder block 120 and the rear cylinder block 120 '. A flow path 161 through which the refrigerant flows is formed in the rotating shaft 160. The flow path 161 is formed in the rotation shaft 160 in the longitudinal direction of the rotation shaft 160. The flow path 161 opens to the rear end of the rotary shaft 160 and communicates with the suction chamber 151 of the rear head 150.

An outlet 162 is formed in the rotating shaft 160. The outlet 162 is formed to selectively communicate with the suction passage 123 of the front cylinder block 120. That is, the outlet 162 is opened to the outer peripheral surface of the rotary shaft 160 to selectively communicate with the suction passage 123.

A shaft shaft 163 is inserted into one side of the rotary shaft 160 and is in close contact with the inner surface of the shaft hole O of the front head 110. The shaft shaft 163 serves to prevent the refrigerant from leaking between the rotary shaft 160 and the shaft hole O. [ The shaft end 163 is formed of a rubber material capable of elastic deformation.

A substantially disk-shaped swash plate 165 is provided on the rotation shaft 160 so as to be inclined with respect to the direction in which the rotation shaft 160 extends. And a plurality of shoe 166 surrounding the edge of the swash plate 165 is installed. The shoe 166 is configured to move along an edge of the swash plate 165.

Meanwhile, the piston 170 is installed in the cylinder bores 122 and 122 'so as to reciprocate linearly. The piston 170 is substantially cylindrical in shape corresponding to the interior of the cylinder bores 122 and 122 'and both ends are located in the cylinder bores 122 and 122' of the front cylinder block 120 and the rear cylinder block 120 ', respectively . That is, both ends of each of the pistons 170 serve to compress the refrigerant in the cylinder bores 122 and 122 '. The piston 170 is coupled to the shoe 166 at an intermediate portion of the piston 170 so that the piston 170 linearly reciprocates according to the rotation of the swash plate 165.

A refrigerant passage (172) is formed in the piston (170). The coolant passage 172 is formed to extend in the longitudinal direction of the piston 170. The coolant passage 172 is formed to communicate with the cylinder bores 122 and 122 '. That is, the coolant passage 172 is opened toward both ends of the piston 170 and communicates with the cylinder bores 122 and 122 '. The refrigerant passage 172 serves as a passage for transmitting the refrigerant sucked into the cylinder bore 122 'of the rear cylinder block 120 to the cylinder bore 122 of the front cylinder block 120.

A piston discharge lead 174 is provided at one end of the piston 170 opposite to the discharge chamber 110a. The piston discharge lead 174 is elastically deformable and elastically deformed according to the internal pressure of the refrigerant passage 172 of the piston 170 to open and close the refrigerant passage 172.

Hereinafter, the operation of the swash plate type compressor according to the present invention will be described in detail with reference to the drawings.

3A and 3B show operation of the swash plate type compressor constituting the embodiment of the present invention in an operational state diagram.

The swash plate 165 is rotated together with the rotation shaft 160 as the rotation shaft 160 rotates by the external driving force. The rotation of the swash plate 165 causes the piston 170 to reciprocate linearly within the cylinder bores 122 and 122 '.

As the rotary shaft 160 rotates, a flow passage 161 inside the rotary shaft 160 is connected to the cylinder bore 122 'of the rear cylinder block 120 through the outlet 162 and the suction passage 123 . In this state, the refrigerant sucked from the outside through the suction port 152 into the suction chamber 151 passes through the flow path 161 of the rotation shaft 160 and flows through the outlet 162 and the suction path 123 To the interior of the cylinder bore 122 'of the rear cylinder block 120. The refrigerant is sucked into the cylinder bore 122 'of the rear cylinder block 120 when the piston 170 moves from the top dead center to the bottom dead center of the corresponding cylinder bore 122 or 122' ).

When the refrigerant is transferred to the cylinder bore 122 ', the piston 170 moves in the direction of the rear head 150, that is, in the direction of the arrow A shown in FIG. 3A, and the refrigerant is compressed.

When the refrigerant is compressed in the cylinder bore 122 'of the rear cylinder block 120 as described above, the refrigerant flows through the refrigerant passage 172 of the piston 170, And is discharged to the cylinder bore 122 of the cylinder 120. At this time, the piston discharge lead 174 of the piston 170 is elastically deformed in a direction away from the piston 170.

At this time, in the process of moving the piston 170 in the direction of the rear head 150, the piston 170 is compressed by the pressure of the refrigerant discharged to the cylinder bore 122 of the front cylinder block 120, And receives a force toward the head 150. That is, the pressure of the refrigerant is increased in the direction in which the piston 170 moves from the cylinder bore 122 of the front cylinder block 120 to the cylinder bore 122 'of the rear cylinder block 120, And moves in a direction parallel to the direction of movement of the piston (170). Therefore, the force for driving the compressor is relatively reduced.

The refrigerant discharged to the cylinder bore 122 of the front cylinder block 120 is compressed again while the piston 170 moves in the direction of the valve plate 130, that is, in the direction of arrow B in FIG. 3B The refrigerant is sucked into the cylinder bore 122 'of the rear cylinder block 120' in the direction of the arrow shown in FIG. 3B.

In this state, the piston discharge lead 174 of the piston 170 is in the on-state again by the pressure inside the cylinder bore 122 of the front cylinder block 120.

As described above, the refrigerant sucked into the cylinder bore 122 'of the rear cylinder block 120' is compressed once by the piston 170, and the compressed refrigerant passes through the refrigerant passage 172, Is discharged to the cylinder bore 122 of the cylinder block 120 and is compressed by the piston 170 a second time.

Accordingly, since the refrigerant is divided into two portions in the cylinder bores 122 and 122 'and is compressed, the compression ratio is reduced more than when the refrigerant is compressed at one time in the cylinder bores 122 and 122' Can smoothly reciprocate in a straight line in the first and second guide grooves 122 and 122 '.

When the refrigerant is compressed in the cylinder bore 122 of the front cylinder block 120 as described above, the pressure inside the cylinder bore 122 of the front cylinder block 120 becomes relatively high, The refrigerant is discharged. In this case, the refrigerant passes through the discharge hole 131 'of the plate body 131 and is discharged.

The refrigerant discharged to the discharge chamber 110a is transferred to the condenser through a refrigerant discharge port (not shown).

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

In the illustrated embodiment, the discharge chamber 110a is formed in the front head 110, but is not limited thereto. For example, the discharge chamber 110a and the suction chamber 151 are formed in the rear head 150, and the oil passage 161 formed in the rotary shaft 161 communicates with the cylinder bore 122 of the front cylinder block 120 .

1 is a sectional view showing the construction of a general swash plate type compressor.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a swash plate type compressor.

FIGS. 3A and 3B are operation state diagrams showing the operation of the swash plate type compressor constituting the embodiment of the present invention; FIG.

Description of the Related Art [0002]

100: compressor 110: front head

110a: discharge chamber O: shaft hole

120: front cylinder block 120 ': rear cylinder block

121: Axial opening 122.122 ': Cylinder bore

123: Suction passage 130: Valve assembly

131: valve plate 132: discharge lead

133: retainer 134: swash plate

150: rear head 151: suction chamber

152: Suction port 160:

161: Euro 162: Exit

165: swash plate 166: shoe

170: piston 172: refrigerant passage

174: Piston discharge lead

Claims (3)

A plurality of cylinder bores 122 and 122 'are formed so as to pass through the shaft hole 121 and a face facing each other is inserted into the swash plate chamber 134 so that the swash plate chamber 134 A cylinder block 120, 120 'formed; A front head 110 installed at one end of the cylinder block 120, 120 'and having a shaft hole O formed through the center thereof; A rear head 150 installed at the other end of the cylinder block 120, 120 'and having a suction chamber 151 in which a refrigerant is sucked; Is rotatably installed through the axial hole 121 of the cylinder block 120 and 120 'and the shaft hole O of the front head 110 and is inserted into the suction chamber 151 of the rear head 150 A rotation shaft 140 on which a flow path 161 for transferring the refrigerant to one side of the cylinder bores 122 and 122 'of the cylinder block 120 and 120' is formed; A swash plate 165 slantingly installed on the rotary shaft 140 and integrally rotated and positioned in the swash plate chamber 134; And A piston which is coupled to an edge of the swash plate 165 and linearly reciprocates in the cylinder bores 122 and 122 'according to the rotational motion of the swash plate 165 to compress the refrigerant in the cylinder bores 122 and 122' (170), the swash plate compressor comprising: A discharge chamber, through which refrigerant is discharged, is formed on either one of the front head 110 and the rear head 150, The piston 170 is communicated with the cylinder bores 122 and 122 'and the refrigerant compressed once at one side of the cylinder bores 122 and 122' of the cylinder block 120 and 120 ' The refrigerant passage 172 for transmitting the refrigerant to the other side of the cylinder bores 122 ' One end of the piston 170 facing the discharge chamber is provided with a piston discharge lead 174 which is elastically deformed according to internal pressures of the cylinder bores 122 and 122 'and the refrigerant passage 172 to open and close the refrigerant passage 172, Respectively, A discharge chamber 110a through which the refrigerant is discharged is formed in the front head 110 and the cylinder bore 122 'and the shaft hole 121 of the rear cylinder block 120' among the cylinder blocks 120 and 120 ' Is connected by a suction passage (123), and the suction passage (123) communicates with a flow passage (161) of the rotation shaft (140). delete delete

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