KR20140014853A - Swash plate type compressor - Google Patents

Abstract

The present invention relates to a swash plate type compressor having a suction check valve (500), which is capable of effectively reducing the pulsation of a high-frequency component generated when an opening/closing core (520) controlling the flow of a refrigerant is actuated, and is capable of preventing vibration noise. According to the present invention, the opening/closing core of a suction check valve is partitioned into a first opening/closing core (520) and a second opening/closing core (530) in series and two interactive valve chambers (first valve chamber (V1), second valve chamber (V2)) are formed in respective opening/closing cores so that the pulsation of a high-frequency component can be effectively reduced; and a fixing structure applied to mounting surfaces on which springs touch the opening/closing cores or a case (510) allows the first opening/closing core (520) and the second opening/closing core (530) to adhere to the inner surface of the case (510) when the first opening/closing core (520) and the second opening/closing core (530) are actuated so that the generation of the vibration noise can be prevented when the first opening/closing core (520) and the second opening/closing core (530) are actuated, wherein the fixing structure regulates the positions of the end portions of the springs.

Description

Swash Plate Compressor {SWASH PLATE TYPE COMPRESSOR}

The present invention relates to a swash plate compressor, and more particularly, in adjusting the opening degree of the refrigerant pipe flowing from the refrigerant line into the compressor through the suction check valve, the opening degree can be properly adjusted during the variable operation of the compressor, and the pulsation of the high frequency component can be achieved. The present invention relates to a swash plate compressor that can effectively reduce the noise and prevent the occurrence of vibration noise during operation of the open / close core.

Generally, compressors that serve to compress refrigerant in automotive cooling systems have been developed in various forms. Such a compressor includes a reciprocating type in which compression is performed while a refrigerant is compressed and a rotary type in which compression is performed while rotating. In the reciprocating type, there are a crank type in which the driving force of the drive source is transmitted to a plurality of pistons by using a crank, a swash plate type in which the swash plate is transmitted by a swash plate installed shaft, a wobble plate type in which a wobble plate is used, There are vane rotary type, scroll type using revolving scroll and fixed scroll.

Among the various types of compressors described above, the swash plate type compressor is driven according to the on / off of the air conditioner switch. When the compressor is driven, the temperature of the evaporator is lowered, and when the compressor is stopped, the temperature of the evaporator is increased.

On the other hand, the swash plate type compressor includes a fixed displacement type and a variable displacement type. These compressors are driven by receiving power from the rotational force of the engine of the vehicle. The fixed displacement type electronic clutch is provided to control the driving of the swash plate type compressor. However, in the case of the fixed-capacity type provided with the electronic clutch, there is a problem in that the RPM of the vehicle flows when the compressor is driven or stopped, thereby preventing stable vehicle operation.

Therefore, in recent years, a variable capacity type that is not provided with a clutch and is always driven together with the driving of the engine of the vehicle and which can change the discharge capacity by changing the inclination angle of the swash plate is widely used. In the variable displacement swash plate type compressor, a pressure regulating valve for adjusting the inclination angle of the swash plate is generally used to control the amount of refrigerant discharge.

However, in the case of the conventional variable displacement swash plate type compressor as described above, when the refrigerant suction amount decreases, vibration occurs in the suction port, thereby causing a pulsation or roar.

In order to solve such a problem, a suction check valve 150 shown in FIG. 1 has been proposed in order to gradually change the flow area of the suction port when the suction amount of refrigerant is small to avoid abrupt suction.

The suction check valve 150 includes a case 151, an opening and closing core 153 and a recoil spring 155. The case 151 is a cylindrical body that is opened to serve as a body of the valve 150 And an opening cover 169 is fitted around the opened suction port 161. A discharge port 163 is formed at one side of the side wall surface at a right angle to the suction port 161. [

The opening and closing core 153 is a cylindrical plunger which is installed inside the case 151 so as to be movable in an axial direction and moves up and down inside the case 151 in accordance with the refrigerant pressure applied to the suction port 161, To the discharge port 163, as shown in FIG.

The recoil spring 155 is installed to elastically support the opening / closing core 153 against the pressure of the refrigerant flowing into the case 151 through the suction port 161. The refrigerant pressure The opening / closing core 153 is brought into close contact with the cover 169 so that the suction port 161 can be closed.

The axial groove 171 is formed on the outer peripheral surface of the opening and closing core 153 so that the refrigerant can flow through the axial groove 171 even when the opening and closing core 153 is in close contact with the lid 169 So that a sudden change in the opening of the suction check valve can be prevented even if there is a sudden change in the refrigerant pressure applied to the suction port 161. [

However, since the conventional suction check valve 150 is configured to operate only by the differential pressure between the suction port and the suction chamber of the variable displacement swash plate type compressor, when the differential pressure between the suction port and the suction chamber exceeds a certain limit, Even when the maximum variable operation is not performed, the opening / closing core 153 can be opened to a maximum similar to the case of the maximum variable operation, so that the effect of preventing the occurrence of suction pulsation or noise is insignificant.

In order to solve this problem, in order to adjust the suction amount of the refrigerant flowing into the suction port through the suction check valve, the opening degree of the suction check valve is adjusted not only by the differential pressure between the suction port and the suction chamber but also by the crank chamber pressure An improved suction check valve 250 as shown in FIG. 2 has been proposed so that the occurrence of suction pulsation or roar can be prevented.

The improved suction check valve 250 is installed on the pipe 135 connecting the suction port (not shown) to the suction chamber 132 and is provided between the suction port 132 and the crank chamber 121 So that the opening degree can be controlled. At this time, a passage 136 connecting the crank chamber 121 and the conduit 135 is formed.

On the other hand, the improved suction check valve 250 as described above, the inlet port 251a penetrates on one side, and when the inlet port 251a is opened, the outlet port 251b communicating with the inlet port 251a penetrates to the other side. And a case 251 having a guide hole 251 d formed at another side thereof, and being supported by a spring S inside the case 251, leading from the suction port 251 a to the discharge port 251 b. Opening and closing core 252 for controlling the flow of the refrigerant, and the crank chamber 121 is located inside the opening and closing core 252 so that the pressure of the crank chamber 121 can be applied to the inside of the opening and closing core 252. It includes a pressure receiving chamber 253 that accommodates the pressure of, and moves up and down integrally with the opening and closing core 252 through the guide hole (251d) of the case 251.

In the case where the above-described improved suction check valve 250 is applied, when the pressure of the suction port is excessive in a state where the inlet port 251b is not maximally variable, the discharge port 251b can be adjusted to the maximum opening degree by the opening / closing core 252 The pressure of the crank chamber 121 acts on the opening / closing core 252 in a direction opposite to the pressure direction of the suction port, so that the final adjusted opening degree can be reduced. As a result, .

However, in the case of the conventional improved suction check valve 250 as described above, although the suction pulsation or the noise that was a problem during variable operation could be considerably reduced, there was a problem that the suction pulsation of the high frequency component was still not reduced. In addition, due to a gap between the side of the opening and closing core 252 and the inner surface of the case 251, there was a problem that vibration noise occurs during the operation of the opening and closing core 252.

The present invention has been proposed to solve the above problems, by configuring two opening and closing cores of the intake check valve and arranged in series, so that two valve chambers interacting with each of the opening and closing cores are formed, high frequency The pulsation of the component can be effectively reduced, and the opening and closing core is applied in close contact with the inner side of the case by applying a fixing structure that regulates the end position of the spring to the spring seating surface where the spring is in contact with the opening core or the case. It is an object of the present invention to provide a swash plate compressor which can prevent the generation of tremor noise during core operation.

According to another aspect of the present invention, there is provided a swash plate compressor including a cylinder block having a plurality of cylinder bores formed therein, a front head disposed in front of the cylinder block and formed with a crank chamber, A rotary shaft mounted on the rotary shaft so as to be rotatable through one side of the rotary shaft; a rotary shaft integrally rotated with the rotary shaft; A swash plate installed so as to be able to vary the angle with respect to the rotation axis so that the swash plate can be adjusted; and a linear reciprocating motion, which is jointly connected to the edge of the swash plate, Thereby compressing the refrigerant sucked through the suction port, A case having a plurality of pistons for discharging, a pipe connecting the suction port to the suction chamber, a suction port penetrating on one side, and a discharge port communicating with the suction port on the other side; and a first spring mounted on the case. A first opening / closing core, which is supported by a medium and constitutes a first valve chamber together with the case, and is supported by a second spring on an upper surface of the first opening / closing core, and together with the first opening / closing core and the case; And a suction check valve including a second opening / closing core constituting a two-valve chamber, and a passage connecting the crank chamber and a conduit is formed, and a pressure regulating hole communicating the first valve chamber and the suction chamber at a lower side of the case. The first opening and closing core is formed by the differential pressure of the first valve chamber and the second valve chamber, the second opening and closing core is the suction port and the second valve chamber And the opening degree is controlled by the differential pressure between the crank chambers.

The suction check valve is positioned inside the second opening / closing core to receive the pressure of the crankcase to the inside of the second opening / closing core to receive the pressure of the crankcase, and penetrates the first opening / closing core and the case. It is preferable to further include a pressure receiving chamber to move up and down integrally with the second opening and closing core.

The case is formed of a hollow cylinder having a guide hole through which the pressure receiving chamber penetrates, and the first opening / closing core moves up and down in an axial direction along an inner circumferential surface of the case, and a through portion penetrates the pressure receiving chamber through a central portion thereof. A hole is formed, and an upper side is formed of a hollow cylinder, and the pressure receiving chamber is formed of a hollow cylinder moving up and down along the guide hole and the through hole, and the second opening and closing core is an inner circumferential surface of the case. Therefore, it is preferable to form the hollow cylinder which moves up and down in an axial direction, and opened the lower side.

According to another aspect of the present invention, there is provided a swash plate compressor including a cylinder block having a plurality of cylinder bores formed therein, a front head disposed in front of the cylinder block and formed with a crank chamber, And a rear head formed with a suction chamber, a discharge port, and a discharge chamber, and configured to form an outer body; a rotary shaft mounted to be rotatable through one side of the housing; A swash plate installed to vary an angle with respect to the rotating shaft so that a refrigerant discharge amount can be controlled; and a swash plate coupled to an edge portion of the swash plate so as to be relatively movable with respect to an inner peripheral surface of the cylinder bore, By performing the movement, the refrigerant sucked through the suction port is compressed, A plurality of pistons for discharging into the exit chamber and a pipe connecting the suction port to the suction chamber, the suction port penetrates on one side, and the discharge port communicating with the suction port on the other side and spaced apart from the discharge port by a predetermined distance downward; A case through which the auxiliary discharge port located is penetrated, a first opening / closing core supported by the case via a first spring, which together with the case constitutes a first valve chamber, and a second spring on an upper surface of the first opening / closing core; And a second opening / closing core constituting a second valve chamber together with the first opening / closing core and the case, and installed in the second opening / closing core to allow refrigerant to flow from the suction port to the auxiliary discharge port. And a suction check valve including a communication block having an auxiliary flow path through which an outer side and an inner side of a second opening / closing core can communicate. A passage for connecting is formed, and a pressure adjusting hole communicating with the first valve chamber and the suction chamber is formed at the lower side of the case, and the first opening / closing core is opened by the differential pressure between the first valve chamber and the second valve chamber. The second opening / closing core may be adjusted by the differential pressure between the suction port and the second valve chamber and the crank chamber.

The suction check valve is connected to the communication block so that the pressure of the crank chamber can be applied to the inside of the second opening and closing core to receive the pressure of the crank chamber, and penetrates through the first opening and closing core and the case. And it is preferable to further include a pressure receiving chamber which moves up and down integrally with the second opening and closing core.

The case is formed of a hollow cylinder having a guide hole through which the pressure receiving chamber penetrates, and the first opening / closing core moves up and down in an axial direction along an inner circumferential surface of the case, and a through portion penetrates the pressure receiving chamber through a central portion thereof. A hole is formed, and an upper side is formed of a hollow cylinder, and the pressure receiving chamber is formed of a hollow cylinder moving up and down along the guide hole and the through hole, and the second opening and closing core is an inner circumferential surface of the case. Therefore, it is preferable to form the hollow cylinder which moves up and down in an axial direction, and opened the lower side.

A first spring seating surface is formed below the case and the first opening / closing core, respectively, and a first spring seating surface formed on the first opening / closing core has an upper end of the first spring at a central portion of the first spring seating surface. Preferably, the first spring top position fixing projection is formed to induce it to be biased to one side.

Preferably, the first spring seating surface formed on the case has a first spring bottom position fixing protrusion for inducing the lower end of the first spring to be seated at the center of the first spring seating surface.

The spring lower position fixing protrusion may be formed with an inclined surface for inducing a lower end of the first spring to be smoothly seated on a spring seating surface formed in the case.

A second spring seating surface is formed at an upper side of the first opening and closing core and a lower side of the second opening and closing core, respectively, and an upper end of the second spring is seated at the second spring seating surface formed at the second opening and closing core. It is preferable that a locking spring jaw for fixing the second spring top position is formed so as to be biased to be seated to one side from the center of the surface.

The second spring seating surface formed on the first opening / closing core is formed with a second spring bottom position fixing block for inducing the lower end of the second spring to be seated at the central portion of the second spring seating surface formed on the first opening / closing core. desirable.

According to another aspect of the present invention, there is provided a swash plate compressor including a cylinder block having a plurality of cylinder bores formed therein, a front head disposed in front of the cylinder block and formed with a crank chamber, And a rear head formed with a suction chamber, a discharge port, and a discharge chamber, and configured to form an outer body; a rotary shaft mounted to be rotatable through one side of the housing; A swash plate installed to vary an angle with respect to the rotating shaft so that a refrigerant discharge amount can be controlled; and a swash plate coupled to an edge portion of the swash plate so as to be relatively movable with respect to an inner peripheral surface of the cylinder bore, By performing the movement, the refrigerant sucked through the suction port is compressed, A plurality of pistons for discharging into the exit chamber and a pipe connecting the suction port to the suction chamber, the suction port penetrates on one side, and the discharge port communicating with the suction port on the other side and spaced apart from the discharge port by a predetermined distance downward; A case through which the auxiliary discharge port located is penetrated, a first opening / closing core supported by the case via a first spring, which together with the case constitutes a first valve chamber, and a second spring on an upper surface of the first opening / closing core; And a second opening / closing core constituting a second valve chamber together with the first opening / closing core and the case, the second opening / closing core to allow refrigerant to flow from the suction port to the auxiliary discharge port. And a suction check valve configured to pass through the refrigerant flow hole so that the outside and the inside of the second opening and closing core communicate with each other. A pressure adjusting hole is formed in communication with the vesicle and the suction chamber, and the first opening / closing core is opened by the differential pressure between the first valve chamber and the second valve chamber. The opening degree is controlled by the differential pressure between the valve chambers.

The case is formed of a hollow cylinder, the first opening and closing core is moved up and down in the axial direction along the inner circumferential surface of the case, the upper side is formed of a hollow cylinder with an opening, the second opening and closing core is the inner circumferential surface of the case It is preferable that it is formed by the hollow cylinder which moves up and down along the axial direction, and the lower side opened.

A first spring seating surface is formed on an inner bottom surface of the case and a bottom surface of the first opening / closing core, respectively, and an upper end of the first spring is formed on the first spring seating surface formed on the first opening / closing core. It is preferable that a first spring top position fixing projection is formed to induce it to be biased toward either side of the central portion of the.

Preferably, the first spring seating surface formed on the case has a first spring bottom position fixing jaw for inducing the lower end of the first spring to be biased toward one side of the first spring seating surface.

A second spring seating surface is formed on an upper surface of the first opening and closing core and a bottom surface of the second opening and closing core, respectively, and an upper end of the second spring is seated on the second spring seating surface formed on the second opening and closing core. It is preferable that a locking spring jaw for fixing the second spring top position is formed so as to be biased to be seated to one side from the center of the surface.

The second spring seating surface formed on the first opening / closing core has a second spring bottom position fixing block for inducing the lower end of the second spring to be seated at the center portion of the second spring seating surface formed on the first opening / closing core. It is preferable.

According to another aspect of the present invention, there is provided a swash plate compressor including a cylinder block having a plurality of cylinder bores formed therein, a front head disposed in front of the cylinder block and formed with a crank chamber, And a rear head formed with a suction chamber, a discharge port, and a discharge chamber, and configured to form an outer body; a rotary shaft mounted to be rotatable through one side of the housing; A swash plate installed to vary an angle with respect to the rotating shaft so that a refrigerant discharge amount can be controlled; and a swash plate coupled to an edge portion of the swash plate so as to be relatively movable with respect to an inner peripheral surface of the cylinder bore, By performing the movement, the refrigerant sucked through the suction port is compressed, A plurality of pistons for discharging into the exit chamber and a pipe connecting the suction port to the suction chamber, the suction port penetrates on one side, and the discharge port communicating with the suction port on the other side and spaced apart from the discharge port by a predetermined distance downward; A case through which the auxiliary discharge port located is penetrated, a first opening / closing core supported by the case via a first spring, which together with the case constitutes a first valve chamber, and a second spring on an upper surface of the first opening / closing core; And a second opening / closing core constituting a second valve chamber together with the first opening / closing core and the case, the second opening / closing core to allow refrigerant to flow from the suction port to the auxiliary discharge port. And a suction check valve configured to pass through the refrigerant flow hole so that the outside and the inside of the second opening and closing core communicate with each other. A furnace is formed, and a pressure adjusting hole communicating with the first valve chamber and the suction chamber is formed at the lower side of the case, and the first opening / closing core is opened by the differential pressure between the second valve chamber and the first valve chamber. The second opening and closing core is characterized in that the opening degree is adjusted by the differential pressure between the suction port and the first valve chamber.

The case is formed of a hollow cylinder having a communication hole communicating with the passage and the first valve chamber, the first opening and closing core is moved up and down in the axial direction along the inner circumferential surface of the case, the hollow cylinder having an upper side opened Preferably, the second opening and closing core is moved up and down in the axial direction along the inner circumferential surface of the case, it is preferable that the lower side is formed of a hollow cylinder.

A first spring seating surface is formed on an inner bottom surface of the case and a bottom surface of the first opening / closing core, respectively, and an upper end of the first spring is formed on the first spring seating surface formed on the first opening / closing core. It is preferable that a first spring top position fixing projection is formed to induce it to be biased toward either side of the central portion of the.

Preferably, the first spring seating surface formed on the case has a first spring bottom position fixing jaw for inducing the lower end of the first spring to be biased to one side from the center of the first spring seating surface.

A second spring seating surface is formed on an upper surface of the first opening and closing core and a bottom surface of the second opening and closing core, respectively, and an upper end of the second spring is seated on the second spring seating surface formed on the second opening and closing core. It is preferable that a locking spring jaw for fixing the second spring top position is formed so as to be biased to be seated to one side from the center of the surface.

The second spring seating surface formed on the first opening / closing core has a second spring bottom position fixing block for inducing the lower end of the second spring to be seated at the center portion of the second spring seating surface formed on the first opening / closing core. It is preferable.

According to another aspect of the present invention, there is provided a swash plate compressor including a cylinder block having a plurality of cylinder bores formed therein, a front head disposed in front of the cylinder block and formed with a crank chamber, And a rear head formed with a suction chamber, a discharge port, and a discharge chamber, and configured to form an outer body; a rotary shaft mounted to be rotatable through one side of the housing; A swash plate installed to vary an angle with respect to the rotating shaft so that a refrigerant discharge amount can be controlled; and a swash plate coupled to an edge portion of the swash plate so as to be relatively movable with respect to an inner peripheral surface of the cylinder bore, By performing the movement, the refrigerant sucked through the suction port is compressed, A plurality of pistons for discharging into the exit chamber and a pipe connecting the suction port to the suction chamber, the suction port penetrates on one side, and the discharge port communicating with the suction port on the other side and spaced apart from the discharge port by a predetermined distance downward; A case through which the auxiliary discharge port located is penetrated, a first opening / closing core supported by the case via a first spring, which together with the case constitutes a first valve chamber, and a second spring on an upper surface of the first opening / closing core; And a second opening / closing core constituting a second valve chamber together with the first opening / closing core and the case, the second opening / closing core to allow refrigerant to flow from the suction port to the auxiliary discharge port. And a suction check valve configured to pass through the refrigerant flow hole so that the outside and the inside of the second opening and closing core communicate with each other. A furnace is formed, and a pressure adjusting hole communicating with the first valve chamber and the suction chamber is formed at the lower side of the case, and the first opening / closing core has a differential pressure between the second valve chamber and the first valve chamber and the crank chamber. The opening degree is adjusted by the, and the second opening and closing core is characterized in that the opening degree is adjusted by the differential pressure between the suction port and the first valve chamber.

The suction check valve is positioned outside of the first opening / closing core to receive the pressure of the crankcase to the outside of the first opening / closing core to receive the pressure of the crankcase, and penetrates the first opening / closing case. It is preferable to further include a pressure receiving chamber which moves up and down integrally with the core.

The case is formed of a hollow cylinder formed with a guide hole through which the pressure receiving chamber passes, the first opening and closing core is moved up and down in the axial direction along the inner circumferential surface of the case, the upper side is formed of a hollow cylinder opened Preferably, the second opening / closing core is vertically moved along the inner circumferential surface of the case in an axial direction and formed of a hollow cylinder having a lower side thereof.

A first spring seating surface is formed on an inner bottom surface of the case and a bottom surface of the first opening / closing core, respectively, and an upper end of the first spring is formed on the first spring seating surface formed on the first opening / closing core. It is preferable that a first spring top position fixing projection is formed to induce it to be biased toward either side of the central portion of the.

Preferably, the first spring seating surface formed on the case has a first spring bottom position fixing protrusion for inducing the lower end of the first spring to be seated at the center of the first spring seating surface.

The spring lower position fixing protrusion may be formed with an inclined surface for inducing a lower end of the first spring to be smoothly seated on a spring seating surface formed in the case.

A second spring seating surface is formed on an upper surface of the first opening and closing core and a bottom surface of the second opening and closing core, respectively, and an upper end of the second spring is seated on the second spring seating surface formed on the second opening and closing core. It is preferable that a locking spring jaw for fixing the second spring top position is formed so as to be biased to be seated to one side from the center of the surface.

The second spring seating surface formed on the first opening / closing core is formed with a second spring bottom position fixing block for inducing the lower end of the second spring to be seated at the central portion of the second spring seating surface formed on the first opening / closing core. desirable.

According to the swash plate type compressor as described above, the opening and closing cores of the intake check valve are composed of two and arranged in series so that two valve chambers are formed to interact with each of the opening and closing cores, thereby effectively pulsating high frequency components. It can be reduced, and the spring is applied to the opening or closing core contacting the case or the case by applying a fixing structure that regulates the end position of the spring to make the opening and closing core in close contact with the inner surface of the case, the vibration during operation The occurrence of noise can be prevented.

1 is a perspective view showing a suction check valve employed in a conventional swash plate type compressor.
2 shows an improved suction check valve employed in a conventional swash plate compressor.
3 is a longitudinal sectional view of a swash plate type compressor according to the present invention, showing a swash plate inclined with respect to a rotation axis.
4 is a longitudinal sectional view of a swash plate compressor according to the present invention, showing a swash plate erected in a radial direction of a rotating shaft;
5 is a longitudinal sectional view of the suction check valve applied to the swash plate compressor according to the first embodiment of the present invention, showing a state in which the opening degree of the suction check valve is minimum.
6 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a first embodiment of the present invention, showing a state in which the opening degree of the suction check valve is maximum.
7 is a longitudinal cross-sectional view of the suction check valve applied to the swash plate compressor according to the first embodiment of the present invention, in which the suction check valve is operated by the interaction between the first valve chamber, the second valve chamber and the pressure receiving chamber during the variable compressor operation. A diagram showing a state where the opening degree is appropriately adjusted.
8 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a second embodiment of the present invention, showing a state in which the opening degree of the suction check valve is minimum.
9 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a second embodiment of the present invention, showing a state in which an opening degree of the suction check valve is maximum.
10 is a longitudinal cross-sectional view of a suction check valve applied to a swash plate compressor according to a second embodiment of the present invention, in which the opening degree of the suction check valve is reduced from the maximum state while the auxiliary outlet is closed even when the second opening / closing core is lowered. Figure showing the state.
11 is a longitudinal cross-sectional view of a suction check valve applied to a swash plate compressor according to a second embodiment of the present invention, in which the suction check valve is operated by the interaction between the first valve chamber, the second valve chamber and the pressure receiving chamber during the variable compressor operation. A diagram showing a state where the opening degree is appropriately adjusted.
12 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a third embodiment of the present invention, showing a state in which the opening degree of the suction check valve is minimum.
13 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a third embodiment of the present invention, showing a state in which the opening degree of the suction check valve is maximum.
14 is a longitudinal cross-sectional view of the suction check valve applied to the swash plate compressor according to the third embodiment of the present invention, in which the opening degree of the suction check valve is reduced from the maximum state while the auxiliary outlet is closed even when the second opening / closing core is lowered. Figure showing the state.
15 is a longitudinal cross-sectional view of a suction check valve applied to a swash plate compressor according to a third embodiment of the present invention, in which the opening degree of the suction check valve is appropriately adjusted by the interaction between the first valve chamber and the second valve chamber during the variable compressor operation. Showing the state in which it is.
16 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a fourth embodiment of the present invention, showing a state in which the opening degree of the suction check valve is minimum;
17 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a fourth embodiment of the present invention, showing a state in which an opening degree of the suction check valve is maximum.
18 is a longitudinal sectional view of the suction check valve applied to the swash plate compressor according to the fourth embodiment of the present invention, even though the second opening and closing core is lowered, the opening of the suction check valve is reduced from the maximum state while the auxiliary discharge port is closed. Figure showing the state.
19 is a longitudinal cross-sectional view of a suction check valve applied to a swash plate compressor according to a fourth embodiment of the present invention, in which the opening degree of the suction check valve is appropriately adjusted by the interaction between the first valve chamber and the second valve chamber during the variable compressor operation. Showing the state in which it is.
20 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a fifth embodiment of the present invention, showing a state in which the opening degree of the suction check valve is minimum.
21 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a fifth embodiment of the present invention, showing a state in which an opening degree of the suction check valve is maximum.
22 is a longitudinal cross-sectional view of a suction check valve applied to a swash plate compressor according to a fifth embodiment of the present invention, in which the opening degree of the suction check valve is reduced from the maximum state while the auxiliary outlet is closed even when the second opening / closing core is lowered. Figure showing the state.
FIG. 23 is a longitudinal cross-sectional view of a suction check valve applied to a swash plate compressor according to a fifth embodiment of the present invention, in which the suction check valve is operated by the interaction between the first valve chamber, the second valve chamber, and the pressure receiving chamber during the variable compressor operation. A diagram showing a state where the opening degree is appropriately adjusted.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the following description of the present invention, detailed description of known related arts will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured by the present invention. Also, the thickness of the lines and the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms used are terms defined in consideration of functions in the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be based on the entire contents of the present specification.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a longitudinal cross-sectional view of the swash plate compressor according to the present invention, the swash plate is a view showing the inclined state with respect to the rotation axis, Figure 4 is a longitudinal sectional view of the swash plate compressor according to the present invention, the swash plate in the radial direction of the rotation axis 5 is a vertical cross-sectional view of the suction check valve applied to the swash plate compressor according to the first embodiment of the present invention, and the opening degree of the suction check valve is minimal, and FIG. A longitudinal cross-sectional view of a suction check valve applied to a swash plate compressor according to a first embodiment of the present invention, showing a state in which an opening degree of the suction check valve is maximum, and FIG. 7 is a swash plate compressor according to a first embodiment of the present invention. This is a longitudinal sectional view of the suction check valve applied to the valve, wherein the opening degree of the suction check valve is properly adjusted by the interaction between the first valve chamber, the second valve chamber, and the pressure receiving chamber during the variable compressor operation. It is a figure which showed the state.

First, the swash plate compressor according to the first embodiment of the present invention will be described with reference to FIGS. 3 to 7. The swash plate compressor according to the first embodiment of the present invention roughly includes a housing 100, a rotary shaft 200, a swash plate 300, a plurality of pistons 400, and a suction check valve 500.

3 and 4, the housing 100 includes a cylinder block 110, a front head 120, and a rear head 130. As shown in FIGS. Here, the cylinder block 110 is a tubular body disposed at an intermediate portion in the longitudinal direction of the housing 100, and a hollow portion is formed therein to house the plurality of pistons 400 as well as the rotary shaft 200 .

The front head 120 and the rear head 130 are cylinders for closing the open and close ends of the upper cylinder block 110. As shown in FIGS. 3 and 4, the front head 120 includes a cylinder block 110 So that the inclination adjusting mechanism 320 can be received while securing the crank chamber 121 which is the rotating space of the swash plate 300. [

The rear head 130 has a front end open toward the cylinder block 110 and includes a suction chamber 132 for supplying the refrigerant to the cylinder bore 111 of the cylinder block 110 during the suction stroke, A discharge chamber 134 through which the refrigerant in the cylinder bore 111 is discharged is formed. A suction port 131 and a discharge port (not shown), which are connected to the suction chamber 132 and the discharge chamber 134, respectively, are formed on an outer wall surface of the rear head 130. On the other hand, a suction check valve 500 is mounted on the channel 135 connecting the suction port 131 to the suction chamber 132.

The rotation shaft 200 is a means for transmitting the rotational driving force of the external drive source to the inside of the compressor, as shown in Figure 3 and 4, through one side of the housing 100, that is, through the central portion of the front head 120 Is rotatably mounted. In addition, the rotating pulley 140 is coupled to one end of the rotating shaft 200 exposed to the outside of the front head 120, the external rotation driving force is transmitted to the rotating shaft 200 through the rotating pulley 140. The rotating shaft 200 is rotated.

3, the swash plate 300 is mounted on the rotary shaft 200 in an inclined state. The swash plate 300 is a member for converting the rotational driving force of the rotary shaft 200 into reciprocating linear motion of the piston 400, And rotates together with the rotating shaft 200. At this time, a plurality of shoes 310 are mounted to the edge portion of the swash plate 300 in the circumferential direction so that the plurality of pistons 400 are slidably supported so as to be relatively movable.

In particular, the swash plate type compressor shown in FIGS. 3 and 4 is a variable displacement swash plate type compressor. The swash plate type compressor is installed such that the inclination angle of the swash plate 300 is variable, Is 90 DEG, the reciprocation motion of the piston 400 disappears, so that the rotation shaft 200 idles. Conversely, when the swash plate 300 is inclined with respect to the rotary shaft 200 as shown in FIG. 3, the piston 400 reciprocates in the cylinder bore 111 to compress the refrigerant.

The suction check valve 500 installed on the pipeline 135 between the suction port 130 and the suction chamber 132 through which the refrigerant flows from the outside is connected to the suction check valve 500 when the slope of the swash plate 300 approaches 90 °, The amount of inflow of the refrigerant becomes small, and on the contrary, when the inclination becomes smaller than 90 degrees, the inflow amount of the refrigerant increases, thereby increasing the opening degree.

The plurality of pistons 400 are means for compressing the refrigerant while reciprocating in the cylinder bore 111 by the swash plate 300. As shown in FIGS. 3 and 4, And is reciprocated linearly along the inner peripheral surface of the cylinder bore 111 of the cylinder block 110 by the rotation of the swash plate 300, The refrigerant sucked into the cylinder bore 111 through the discharge port 131 is discharged to an external refrigerant line through a discharge port (not shown) of the rear head 130.

On the other hand, in the swash plate type compressor according to the first embodiment of the present invention, the suction check valve 500 whose opening degree is adjusted according to the amount of the refrigerant flowing through the suction port 131 moves the suction port 131 to the suction chamber 132. It is installed on the conduit 135 connected to the), as shown in Figure 5, the case 510, the first opening and closing core 520, the second opening and closing core 530, the pressure receiving chamber 540 ).

In the suction check valve 500 applied to the swash plate compressor according to the first embodiment of the present invention, the first opening / closing core 520 has a first spring S1 on the inner bottom surface of the case 510. It is supported by the media, and together with the case 510 constitutes a first valve chamber (V1). In addition, the second opening / closing core 530 is supported on the upper surface of the first opening / closing core 520 via a second spring S2, and the first opening / closing core 520 is formed together with the first opening / closing core 520 and the case 510. 2 constitute a valve chamber (V2).

In addition, a passage 136 connecting the crank chamber 121 and the conduit 135 is formed so that the pressure of the crank chamber 121 affects the opening degree of the suction check valve 500.

In addition, a pressure adjusting hole 514 communicating with the first valve chamber V1 and the suction chamber 132 is formed at the lower side of the case 510, and the suction chamber 132 is formed in the first valve chamber V1. The pressure of can act.

In addition, the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the second opening and closing core 530 is the suction port 131 ) And the opening degree is adjusted by the differential pressure between the second valve chamber V2 and the crank chamber 121.

In addition, the pressure receiving chamber 540 is a means for applying the pressure of the crank chamber 121 to the second opening and closing core 530, which is applied to the second opening and closing core 530 during variable operation. By allowing the pressure of the crank chamber 121 to be added to the pressure of the second valve chamber V2 so as to correspond to the pressure of the suction port 131, even if the pressure of the suction port 131 becomes excessive, the second The opening degree of the discharge port 512 controlled by the opening / closing core 530 may be properly adjusted.

To this end, the pressure receiving chamber 540 is a space portion 540a for receiving the pressure of the crank chamber 121 therein so that the pressure of the crank chamber 121 can be applied to the inside of the second opening and closing core 530. Is formed and is installed inside or integrally formed with the second opening / closing core 530, and penetrates the guide hole 515 of the case 510 and the through hole 520a of the first opening / closing core 520. It is formed of a hollow cylinder such as a cylindrical body that moves up and down integrally with the second opening and closing core 530.

On the other hand, the case 510 is a portion forming the outer body of the suction check valve 500, is installed on the conduit 135 connecting the suction port 131 to the suction chamber 132, the lower side is shown It is installed on the passage 136 connecting the crank chamber 121 and the conduit 135 as shown. At this time, an O-ring R is installed between the case 510 and the passage 136 to maintain airtightness.

The case 510 is formed of a hollow cylinder, such as a cylindrical body, the lower side in the drawing is made of a blocked shape except for the guide hole 515 through which the pressure receiving chamber 540 can be penetrated, suction A cover 517 is covered on the upper side in the figure opened toward the port 131. In addition, one side of the case 510, that is, the center of the cover 517 is penetrated through the suction port 511 to form a flow path in series with the suction port 131, the other side of the case 510 A discharge port 512 communicating with the suction port 511 is formed through.

On the other hand, the opening degree of the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the first valve chamber (V1) and the second valve chamber ( The pressure of the second valve chamber V2 is changed and the elastic repulsive force of the second spring S2 is changed while moving up and down inside the case 510 by the differential pressure of V2). Affects dog opening

The first opening / closing core 520 is formed of a hollow cylinder such as a cylindrical body having an approximately opened upper side. As shown in FIG. 5, the first opening / closing core 520 is inserted into a first spring S1 inserted into a lower end of the case 510. It is supported by, the through-hole 520a through which the pressure receiving chamber 540 passes is formed.

In addition, the first opening / closing core 520 is configured to reciprocate up and down the inside of the case 510. Therefore, in order to suppress noise and vibration, it is preferable that the first opening / closing core 520 is formed on the inner circumferential surface of the case 510 while being in close contact with the inner circumferential surface of the case 510 and sliding in the axial direction along the inner circumferential surface. The first opening and closing core 520 is formed to a size that can be spaced apart from the inner circumferential surface of the case 510 because it may affect the smooth reciprocating movement if too close.

In addition, the first spring (S1) is an elastic resilient means for supporting the first opening and closing core 520 as described above, is installed between the inner bottom of the case 510 and the first opening and closing core 520, the first opening and closing The core 520 is supported and serves to repel the first opening / closing core 520 together with the pressure of the suction chamber 132 introduced through the pressure adjusting hole 514.

On the other hand, the second opening and closing core 530 is a means for controlling the flow of the refrigerant passing through the inlet 511 while moving up and down inside the case 510, the discharge port (145) in the inlet 511 of the case 510 The pressure of the refrigerant flowing through the inlet 511 of the case 510 (also the pressure of the suction port 131) and the second valve chamber V2 and the crank to interrupt the flow of the refrigerant leading to 512. The opening degree of the suction check valve 500 leading from the suction port 511 to the discharge port 512 of the case 510 is adjusted while reciprocating in the axial direction according to the differential pressure between the pressures of the seals 121.

The second opening core 530 is formed of a hollow cylinder such as a cylindrical body having a lower opening, and as shown in FIG. 5, between the first opening / closing core 520 and the second opening / closing core 530. It is supported by a second spring (S2) is inserted into, the center portion of the pressure receiving chamber 540 is connected or integrally formed, the top dead center and the second is caught by the cover 517 of the case 510 is constrained It reciprocates between bottom dead centers where the compression of the spring S2 is no longer possible.

In addition, an axial groove 530a is formed on the outer circumferential surface of the second opening / closing core 530, so that the refrigerant is formed through the axial groove 530a even when the second opening / closing core 530 is in close contact with the cover 517. The flow rate of the second opening / closing core 530 due to the rapid change in the refrigerant pressure applied to the inlet 511 may be prevented.

In addition, the second opening / closing core 530 is configured to reciprocate up and down the inside of the case 510. Therefore, in order to suppress noise and vibration, it is preferable that the second opening / closing core 530 is formed on the inner circumferential surface of the case 510 while being in close contact with the inner circumferential surface of the case 510 and sliding in the axial direction along the inner circumferential surface. The second opening and closing core 530 is formed to a size that can be spaced apart from the inner circumferential surface of the case 510 because it may affect the smooth reciprocating movement if too close.

In addition, the second spring (S2) is an elastic resilient means for supporting the second opening and closing core 530 as described above, is installed between the upper surface of the first opening and closing core 520 and the second opening and closing core 530, 2 supports the opening and closing core 530, and serves to repel the second opening and closing core 530 against the pressure of the refrigerant flowing through the inlet 511. That is, for example, when there is no pressure of the refrigerant acting through the inlet 511, as shown in FIG. 5, the second opening and closing core 530 is pushed upward as much as possible, while the refrigerant acting through the inlet 511. When the pressure is the maximum, as shown in FIG. 6, the maximum compression toward the first opening and closing core 520 is performed.

On the other hand, the bottom of the inner space of the case 510, that is, the portion except the guide hole 515 of the lower side of the inner space in the drawing, the first spring seating surface 516 in contact with the lower end of the first spring (S1) ). In addition, the portion of the lower surface of the first opening / closing core 520 except for the through hole 520a forms a first spring seating surface 521 to which the upper end of the first spring S1 contacts.

On the other hand, it is necessary to induce the first opening and closing core 520 to be in close contact with one side of the case 510 to prevent the generation of vibration noise during the operation of the first opening and closing core 520. To this end, the first spring seating surface 521 formed on the first opening / closing core 520 may be guided so that the upper end of the first spring S1 is biased toward one side from the center of the first spring seating surface 521. A first spring upper position fixing protrusion 521a is formed, and a first spring seating surface 516 formed on the case 510 has a lower end of the first spring S1 on the first spring seating surface 516. It is preferable to form a first spring bottom position fixing projection 516a to induce to be seated in the central portion of the. In addition, the inclined surface 516aa guides the lower end of the first spring S1 to the first spring seating surface 516 formed on the case 510 in the first spring lower position fixing protrusion 516a. It is preferable that this be formed.

As such, the first spring mounting position fixing protrusion 521a is formed on the first spring seating surface 521 formed on the first opening / closing core 520, and the first spring seating surface 516 formed on the case 510 is formed. By forming the first spring lower position fixing projection 516a, the first spring S1 is positioned obliquely with respect to the first opening / closing core 520 and the case 510 as shown in FIGS. 5 to 7. It supports the first opening and closing core 520 in a state. Therefore, the degree of compression of the first and second springs S1 on the left and right sides of the drawing varies with respect to the pressure receiving chamber 540 and is unbalanced to the repulsive force of the first spring S1 that elastically supports the first opening and closing core 520. This will occur. Then, the first opening and closing core 520 is inclined in the oblique direction of the first spring (S1), a portion of the side of the first opening and closing core 520 is in close contact with the inner peripheral surface of the case 510.

As such, when the first opening / closing core 520 reciprocates in the case 510 while the predetermined portion of the side surface of the first opening / closing core 520 remains in close contact with the inner circumferential surface of the case 510, the first opening / closing core Even if a gap (Gap) exists between the side of the 520 and the inner circumferential surface of the case 510, the vibration noise during the reciprocating movement of the first opening and closing core 520 can be prevented.

Meanwhile, a portion of the upper surface of the first opening / closing core 520 except for the through hole 520a forms a second spring seating surface 522 to which the lower end of the second spring S2 contacts. In addition, a portion of the lower surface of the second opening / closing core 530 except for the portion where the pressure receiving chamber 540 is located forms a second spring seating surface 531 to which the upper end of the second spring S2 contacts.

On the other hand, it is necessary to induce the second opening and closing core 530 in close contact with one side of the case 510 to prevent the generation of vibration noise during the operation of the second opening and closing core 530. To this end, second spring seating surfaces 522 and 531 are formed on an upper surface of the first opening / closing core 520 and a lower surface of the second opening / closing core 530, respectively, and a second spring seating formed on the second opening / closing core 530. The surface 531 has a second spring top position fixing jaw 531a for inducing the upper end of the second spring S2 to be seated to be biased toward either side from the center of the second spring seating surface 531. The second spring seating surface 522 formed on the first opening / closing core 520 has a lower end of the second spring S2 at the center of the second spring seating surface 522 on the first opening / closing core 520. It is preferable that the second spring lower position fixing block 522a is guided to be seated in the seat.

As such, a second spring upper end position fixing jaw 531a is formed on the second spring seating surface 531 formed on the second opening and closing core 530, and a second spring seating is formed on the first opening and closing core 520. By forming the second spring lower position fixing block 522a on the surface 522, the second spring S2 is formed on the second opening / closing core 530 and the case 510 as shown in FIGS. 5 to 7. The second opening and closing core 530 is supported in an obliquely positioned position with respect to the second opening and closing core 530. Accordingly, the compression degree of the second spring S2 on the left and right sides of the drawing is changed on the basis of the pressure receiving chamber 540 and is unbalanced to the repulsive force of the second spring S2 elastically supporting the second opening / closing core 530. This will occur. Then, the second opening and closing core 530 is inclined in the oblique direction of the second spring (S2), a portion of the side of the second opening and closing core 530 is in close contact with the inner peripheral surface of the case 510.

As such, when the second opening / closing core 530 reciprocates in the case 510 while the predetermined portion of the side surface of the second opening / closing core 530 is kept in close contact with the inner circumferential surface of the case 510, the second opening / closing core Even if a gap Gap exists between the side of the 530 and the inner circumferential surface of the case 510, the shaking noise may be prevented during the reciprocating movement of the second opening / closing core 530.

Meanwhile, as described above, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the first valve chamber V1 and the second valve chamber V2, and the suction port 131 and the second valve chamber are adjusted. When the opening degree of the second opening / closing core 530 is adjusted by the differential pressure between V2 and the crank chamber 121, the first opening / closing core 520 plays a buffer role in the operation of the second opening / closing core 530. In the initial operation of the compressor, the pulsation change due to the rapid increase in the valve opening can be smoothed, and the pulsation of the high frequency components generated during the operation of the suction check valve 500 can be effectively reduced. The opening degree of the valve 500 is adjusted appropriately, so that the effect of pulsation improvement can be sufficiently obtained.

Hereinafter, a swash plate compressor according to a second embodiment of the present invention will be described with reference to FIGS. 3 and 4 partially and FIGS. 8 to 11.

FIG. 8 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a second embodiment of the present invention, showing a state in which an opening degree of the suction check valve is minimum, and FIG. 9 is a second embodiment of the present invention. A longitudinal cross-sectional view of the suction check valve applied to the swash plate compressor according to the present invention is a view showing a state in which the opening degree of the suction check valve is maximum, and FIG. 10 is a longitudinal cross section of the suction check valve applied to the swash plate compressor according to the second embodiment of the present invention. Figure 2 is a view showing a state in which the opening degree of the suction check valve is reduced from the maximum state while the auxiliary discharge port is closed even when the second opening and closing core is lowered maximum, Figure 11 is a swash plate compressor according to a second embodiment of the present invention Longitudinal sectional view of the applied suction check valve, in which the opening degree of the suction check valve is appropriately adjusted by the interaction between the first valve chamber, the second valve chamber and the pressure receiving chamber during the compressor variable operation. A view showing the state.

The swash plate compressor according to the second embodiment of the present invention includes a housing 100, a rotation shaft 200, a swash plate 300, a plurality of pistons 400, and a suction check valve 500. In general, similar to the swash plate compressor according to the first embodiment of the present invention described above.

However, since there is a difference in the configuration of the suction check valve 500, there is a difference in the operation of the opening degree of the suction check valve 500 by this, it will be described below with respect to this difference.

The suction check valve 500 applied to the swash plate compressor according to the second embodiment of the present invention is opened in accordance with the amount of the refrigerant flowing through the suction port 131, the suction port 131 to the suction chamber 132 It is installed on the conduit 135 connecting to, and, as shown in Figure 8, the case 510, the first opening and closing core 520, the second opening and closing core 530, the communication block 535 And a pressure receiving chamber 540.

In the suction check valve 500 applied to the swash plate compressor according to the second embodiment of the present invention, the case 510 is spaced apart from the discharge port 512 and the discharge port 512 by a predetermined distance downward. The auxiliary discharge port 513 is formed through. In addition, the first opening / closing core 520 is supported on the inner bottom surface of the case 510 via a first spring S1, and together with the case 510, constitutes a first valve chamber V1. . In addition, the second opening / closing core 530 is supported on the upper surface of the first opening / closing core 520 via a second spring S2, and the first opening / closing core 520 is formed together with the first opening / closing core 520 and the case 510. 2 constitute a valve chamber (V2).

In addition, a passage 136 connecting the crank chamber 121 and the conduit 135 is formed so that the pressure of the crank chamber 121 affects the opening degree of the suction check valve 500.

In addition, a pressure adjusting hole 514 communicating with the first valve chamber V1 and the suction chamber 132 is formed at the lower side of the case 510, and the suction chamber 132 is formed in the first valve chamber V1. The pressure of can act.

In addition, an auxiliary flow path 534 through which an outer side and an inner side of the second opening / closing core 530 communicate with the second opening / closing core 530 to allow the refrigerant to flow from the suction port 511 to the auxiliary discharge port 513. Communication block 535 is installed, and some of the refrigerant pressurized to move the second opening / closing core 530 downward through the communication block 535 to the second valve chamber V2. After being introduced, it is introduced into the suction chamber 132 through the auxiliary discharge port 513.

In addition, the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the second opening and closing core 530 is the suction port 131 ) And the opening degree is adjusted by the differential pressure between the second valve chamber V2 and the crank chamber 121.

In addition, the pressure receiving chamber 540 is a means for allowing the pressure of the crank chamber 121 to be applied to the inside of the second opening and closing core 530, to the second opening and closing core 530 during variable operation. By allowing the pressure of the crank chamber 121 to be added to the pressure of the second valve chamber V2 so as to correspond to the pressure of the suction port 131 applied, even if the pressure of the suction port 131 becomes excessive. The opening degree of the discharge port 512 controlled by the second opening and closing core 530 may be adjusted appropriately.

To this end, the pressure receiving chamber 540 is a space portion 540a for receiving the pressure of the crank chamber 121 therein so that the pressure of the crank chamber 121 can be applied to the inside of the second opening and closing core 530. Is formed, and is connected to the communication block 535 installed in the second opening and closing core 530 to penetrate the guide hole 515 of the case 510 and the through hole 520a of the first opening and closing core 520. It is formed of a hollow cylinder such as a cylindrical body that moves up and down integrally with the second opening and closing core 530.

On the other hand, the case 510 is a portion forming the outer body of the suction check valve 500, is installed on the conduit 135 connecting the suction port 131 to the suction chamber 132, the lower side is shown It is installed on the passage 136 connecting the crank chamber 121 and the conduit 135 as shown. At this time, an O-ring R is installed between the case 510 and the passage 136 to maintain airtightness.

The case 510 is formed of a hollow cylinder, such as a cylindrical body, the lower side in the drawing is made of a blocked shape except for the guide hole 515 through which the pressure receiving chamber 540 can be penetrated, suction A cover 517 is covered on the upper side in the figure opened toward the port 131. In addition, one side of the case 510, that is, the center of the cover 517 is penetrated through the suction port 511 to form a flow path in series with the suction port 131, the other side of the case 510 The discharge port 512 communicating with the suction port 511 and the auxiliary discharge port 513 spaced apart from the discharge port 512 by a predetermined distance in the downward direction are formed through.

On the other hand, the opening degree of the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the first valve chamber (V1) and the second valve chamber ( The pressure of the second valve chamber V2 is changed and the elastic repulsive force of the second spring S2 is changed while moving up and down inside the case 510 by the differential pressure of V2). Affects dog opening

Meanwhile, the first opening / closing core 520 moves up and down inside the case 510 and flows into the second valve chamber V2 through the suction port 511 and the communication block 535, and then the auxiliary discharge port 513. As a means for controlling the flow of the refrigerant moving to the suction chamber 132 through the second valve chamber (V2) so as to control the flow of the refrigerant from the inlet 511 of the case 510 to the auxiliary discharge port 513. Control the opening degree of the suction check valve 500 leading from the inlet 511 of the case 510 to the auxiliary outlet 513 while reciprocating in the axial direction according to the differential pressure between the pressure of the valve and the pressure of the first valve chamber V1. do.

The first opening / closing core 520 is formed of a hollow cylinder such as a cylindrical body having an approximately opened upper side. As shown in FIG. 8, the first opening / closing core 520 is inserted into a first spring S1 inserted into a lower end of the case 510. It is supported by, the through-hole 520a through which the pressure receiving chamber 540 passes is formed.

In addition, the first opening / closing core 520 is configured to reciprocate up and down the inside of the case 510. Therefore, in order to suppress noise and vibration, it is preferable that the first opening / closing core 520 is formed on the inner circumferential surface of the case 510 while being in close contact with the inner circumferential surface of the case 510 and sliding in the axial direction along the inner circumferential surface. The first opening and closing core 520 is formed to a size that can be spaced apart from the inner circumferential surface of the case 510 because it may affect the smooth reciprocating movement if too close.

In addition, the first spring (S1) is an elastic resilient means for supporting the first opening and closing core 520 as described above, is installed between the inner bottom of the case 510 and the first opening and closing core 520, the first opening and closing The core 520 is supported and serves to repel the first opening / closing core 520 together with the pressure of the suction chamber 132 introduced through the pressure adjusting hole 514.

On the other hand, the second opening and closing core 530 is a means for controlling the flow of the refrigerant passing through the inlet 511 while moving up and down inside the case 510, the discharge port (145) in the inlet 511 of the case 510 The pressure of the refrigerant flowing through the inlet 511 of the case 510 (also the pressure of the suction port 131) and the second valve chamber V2 and the crank to interrupt the flow of the refrigerant leading to 512. The opening degree of the suction check valve 500 leading from the suction port 511 to the discharge port 512 of the case 510 is adjusted while reciprocating in the axial direction according to the differential pressure between the pressures of the seals 121.

The second opening core 530 is formed of a hollow cylinder such as a cylindrical body with a lower side opening, and as shown in FIG. 8, between the first opening and closing core 520 and the second opening and closing core 530. A top dead center and a second spring supported by a second spring S2 inserted into the center portion, the communication block 535 is connected or integrally formed at a central portion thereof, and is restrained by the cover 517 of the case 510. It reciprocates between the bottom dead centers where the compression of S2 is no longer possible.

In addition, an axial groove 530a is formed on the outer circumferential surface of the second opening / closing core 530, so that the refrigerant is formed through the axial groove 530a even when the second opening / closing core 530 is in close contact with the cover 517. The flow rate of the second opening / closing core 530 due to the rapid change in the refrigerant pressure applied to the inlet 511 may be prevented.

In addition, the second opening / closing core 530 is configured to reciprocate up and down the inside of the case 510. Therefore, in order to suppress noise and vibration, it is preferable that the second opening / closing core 530 is formed on the inner circumferential surface of the case 510 while being in close contact with the inner circumferential surface of the case 510 and sliding in the axial direction along the inner circumferential surface. The second opening and closing core 530 is formed to a size that can be spaced apart from the inner circumferential surface of the case 510 because it may affect the smooth reciprocating movement if too close.

In addition, the second spring (S2) is an elastic resilient means for supporting the second opening and closing core 530 as described above, is installed between the upper surface of the first opening and closing core 520 and the second opening and closing core 530, 2 supports the opening and closing core 530, and serves to repel the second opening and closing core 530 against the pressure of the refrigerant flowing through the inlet 511. That is, for example, when there is no pressure of the refrigerant acting through the inlet 511, as shown in FIG. 8, the second opening and closing core 530 is pushed upward as much as possible, while the refrigerant acting through the inlet 511. When the pressure of the maximum is as shown in FIG. 10, the maximum compression toward the first opening and closing core 520 is performed.

Meanwhile, first spring seating surfaces 516 and 521 and second spring seating surfaces 522 and 531 are formed on the case 510, the first opening and closing core 520, and the second opening and closing core 530, respectively. By applying a fixing structure that regulates the end position of the spring (S1) or the second spring (S2) so that the first opening and closing core 520 and the second opening and closing core 530 is in close contact with the inner surface of the case 510. As such, the configuration of the first opening / closing core 520 and the second opening / closing core 530 to prevent the occurrence of vibration noise is the same as in the case of the first embodiment of the present invention. do.

Meanwhile, as described above, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the first valve chamber V1 and the second valve chamber V2, and the suction port 131 and the second valve chamber are adjusted. When the opening degree of the second opening / closing core 530 is adjusted by the differential pressure between V2 and the crank chamber 121, the first opening / closing core 520 plays a buffer role in the operation of the second opening / closing core 530. In the initial operation of the compressor, the pulsation change due to the rapid increase in the valve opening can be smoothed, and the pulsation of the high frequency components generated during the operation of the suction check valve 500 can be effectively reduced. The opening degree of the valve 500 is adjusted appropriately, so that the effect of pulsation improvement can be sufficiently obtained.

In addition, by forming the auxiliary discharge port 513 in the case 510, even when the second opening and closing core is lowered to the maximum, the auxiliary discharge port 513 is closed and the opening degree of the suction check valve 500 is shown in FIG. By further reducing the pressure change of the excessive suction port 511 can be prevented, thereby further increasing the effect of the pulsation improvement.

Hereinafter, a swash plate compressor according to a third embodiment of the present invention will be described with reference to FIGS. 3 and 4 partially and FIGS. 12 to 15.

12 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a third embodiment of the present invention, showing a state in which an opening degree of the suction check valve is minimum, and FIG. 13 is a third embodiment of the present invention. A longitudinal cross-sectional view of the suction check valve applied to the swash plate compressor according to the present invention is a view showing a state in which the opening degree of the suction check valve is maximum, and FIG. 14 is a longitudinal cross section of the suction check valve applied to the swash plate compressor according to the third embodiment of the present invention. FIG. 15 is a view illustrating a state in which the opening degree of the suction check valve is reduced from the maximum state while the auxiliary discharge port is closed even when the second opening / closing core is lowered, and FIG. 15 is a swash plate type compressor according to the third embodiment of the present invention. Longitudinal sectional view of the applied suction check valve, showing the state in which the opening degree of the suction check valve is properly adjusted by the interaction between the first valve chamber and the second valve chamber during the variable operation of the compressor. FIG.

The swash plate compressor according to the third embodiment of the present invention includes a housing 100, a rotation shaft 200, a swash plate 300, a plurality of pistons 400, and a suction check valve 500. In Figure 3 is similar to the swash plate compressor according to the first embodiment of the present invention as a whole, the structure of the suction check valve 500 is more similar to the swash plate compressor according to the second embodiment of the present invention described above.

However, since there is a difference in a specific part in the configuration of the suction check valve 500, there is a difference in the operation of the opening degree of the suction check valve 500 by this, it will be described below with respect to these differences.

The suction check valve 500 applied to the swash plate compressor according to the third exemplary embodiment of the present invention has an opening degree adjusted according to the amount of refrigerant flowing through the suction port 131, and the suction port 131 is suction chamber 132. It is installed on the conduit 135 connected to the), and as shown in Figure 12, includes a case 510, the first opening and closing core 520, and the second opening and closing core 530.

In the suction check valve 500 applied to the swash plate compressor according to the third embodiment of the present invention, the case 510 is spaced apart from the discharge port 512 and the discharge port 512 by a predetermined distance. The auxiliary discharge port 513 is formed through. In addition, the first opening / closing core 520 is supported on the inner bottom surface of the case 510 via a first spring S1, and together with the case 510, constitutes a first valve chamber V1. . In addition, the second opening / closing core 530 is supported on the upper surface of the first opening / closing core 520 via a second spring S2, and the first opening / closing core 520 is formed together with the first opening / closing core 520 and the case 510. 2 constitute a valve chamber (V2).

However, unlike the first and second embodiments of the present invention described above, the crank chamber is not formed because a passage 136 (see FIG. 5 or FIG. 8) connecting the crank chamber 121 and the conduit 135 is not formed. The pressure of 121 does not affect the opening degree of the suction check valve 500.

In addition, a pressure adjusting hole 514 communicating with the first valve chamber V1 and the suction chamber 132 is formed at the lower side of the case 510, and the suction chamber 132 is formed in the first valve chamber V1. The pressure of can act.

In addition, in order to allow the refrigerant to flow from the suction port 511 to the auxiliary discharge port 513, the refrigerant flows to allow the outside of the second opening and closing core 530 to communicate with the second opening and closing core 530. A hole 530b is formed therethrough, and after some of the refrigerant applying pressure to move the second opening / closing core 530 downward through the refrigerant flow hole 530b flows into the second valve chamber V2. It flows into the suction chamber 132 through the auxiliary discharge port 513.

In addition, the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the second opening and closing core 530 is the suction port 131 ) And the opening degree is adjusted by the differential pressure between the second valve chamber V2.

On the other hand, the case 510 is a portion constituting the outer body of the suction check valve 500, it is installed on the conduit 135 connecting the suction port 131 to the suction chamber 132.

The case 510 is formed of a hollow cylinder such as a cylindrical body, the bottom side of the drawing is formed in a closed shape, the cover 517 is covered on the top side on the drawing opened toward the suction port 131. In addition, one side of the case 510, that is, the center of the cover 517 is penetrated through the suction port 511 to form a flow path in series with the suction port 131, the other side of the case 510 The discharge port 512 communicating with the suction port 511 and the auxiliary discharge port 513 spaced apart from the discharge port 512 by a predetermined distance in the downward direction are formed through.

On the other hand, the opening degree of the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the first valve chamber (V1) and the second valve chamber ( The pressure of the second valve chamber V2 is changed and the elastic repulsive force of the second spring S2 is changed while moving up and down inside the case 510 by the differential pressure of V2). Affects dog opening

On the other hand, the first opening and closing core 520 is moved up and down inside the case 510, the second valve chamber (V2) through the refrigerant flow hole 530b of the inlet 511 and the second opening and closing core 530. As a means for controlling the flow of the refrigerant flowing into the suction chamber 132 through the auxiliary discharge port 513 and intermittently flowing from the suction port 511 of the case 510 to the auxiliary discharge port 513. Suction leading from the inlet port 511 of the case 510 to the auxiliary outlet port 513 while reciprocating in the axial direction according to the pressure difference between the pressure of the second valve chamber V2 and the pressure of the first valve chamber V1 so as to be possible. The opening degree of the check valve 500 is adjusted.

The first opening and closing core 520 is formed of a hollow cylinder, such as a cylindrical body having an approximately opened upper side, as shown in FIG. Is supported by.

In addition, the first opening / closing core 520 is configured to reciprocate up and down the inside of the case 510. Therefore, in order to suppress noise and vibration, it is preferable that the first opening / closing core 520 is formed on the inner circumferential surface of the case 510 while being in close contact with the inner circumferential surface of the case 510 and sliding in the axial direction along the inner circumferential surface. The first opening and closing core 520 is formed to a size that can be spaced apart from the inner circumferential surface of the case 510 because it may affect the smooth reciprocating movement if too close.

In addition, the first spring (S1) is an elastic resilient means for supporting the first opening and closing core 520 as described above, is installed between the inner bottom of the case 510 and the first opening and closing core 520, the first opening and closing The core 520 is supported and serves to repel the first opening / closing core 520 together with the pressure of the suction chamber 132 introduced through the pressure adjusting hole 514.

On the other hand, the second opening and closing core 530 is a means for controlling the flow of the refrigerant passing through the inlet 511 while moving up and down inside the case 510, the discharge port (145) in the inlet 511 of the case 510 Pressure of the refrigerant flowing through the inlet 511 of the case 510 (also the pressure of the suction port 131) and the pressure of the second valve chamber V2 so as to interrupt the flow of the refrigerant leading to 512. The opening degree of the suction check valve 500 leading from the suction port 511 of the case 510 to the discharge port 512 is adjusted while reciprocating in the axial direction according to the differential pressure therebetween.

The second opening core 530 is formed of a hollow cylinder, such as a cylindrical body having a lower opening, and as shown in FIG. 12, between the first opening / closing core 520 and the second opening / closing core 530. It is supported by the second spring (S2) is inserted into the coolant flow hole 530b is formed through the center portion, the top dead center and the second spring (S2) is caught by the cover 517 of the case 510 It reciprocates between bottom dead centers where compression is no longer possible.

In addition, an axial groove 530a is formed on the outer circumferential surface of the second opening / closing core 530, so that the refrigerant is formed through the axial groove 530a even when the second opening / closing core 530 is in close contact with the cover 517. The flow rate of the second opening / closing core 530 due to the rapid change in the refrigerant pressure applied to the inlet 511 may be prevented.

In addition, the second opening / closing core 530 is configured to reciprocate up and down the inside of the case 510. Therefore, in order to suppress noise and vibration, it is preferable that the second opening / closing core 530 is formed on the inner circumferential surface of the case 510 while being in close contact with the inner circumferential surface of the case 510 and sliding in the axial direction along the inner circumferential surface. The second opening and closing core 530 is formed to a size that can be spaced apart from the inner circumferential surface of the case 510 because it may affect the smooth reciprocating movement if too close.

In addition, the second spring (S2) is an elastic resilient means for supporting the second opening and closing core 530 as described above, is installed between the upper surface of the first opening and closing core 520 and the second opening and closing core 530, 2 supports the opening and closing core 530, and serves to repel the second opening and closing core 530 against the pressure of the refrigerant flowing through the inlet 511. That is, for example, when there is no pressure of the refrigerant acting through the inlet 511, as shown in FIG. 12, the second opening and closing core 530 is pushed upward as much as possible, while the refrigerant acting through the inlet 511. When the pressure is the maximum, as shown in FIG. 14, the maximum compression toward the first opening and closing core 520 is performed.

On the other hand, the bottom of the inner space of the case 510, that is, the inner surface of the lower side of the inner space in the drawing forms a first spring seating surface 516 in contact with the lower end of the first spring (S1). In addition, a lower surface of the first opening / closing core 520 forms a first spring seating surface 521 to which the upper end of the first spring S1 contacts.

On the other hand, it is necessary to induce the first opening and closing core 520 to be in close contact with one side of the case 510 to prevent the generation of vibration noise during the operation of the first opening and closing core 520. To this end, the first spring seating surface 521 formed on the first opening / closing core 520 may be guided so that the upper end of the first spring S1 is biased toward one side from the center of the first spring seating surface 521. A first spring upper position fixing protrusion 521a is formed, and a first spring seating surface 516 formed on the case 510 has a lower end of the first spring S1 of the first spring seating surface 516. It is preferable to form a locking spring 516a for fixing the first spring lower position to induce it to be biased toward either side of the center.

As such, the first spring mounting position fixing protrusion 521a is formed on the first spring seating surface 521 formed on the first opening / closing core 520, and the first spring seating surface 516 formed on the case 510 is formed. The first spring S1 is obliquely positioned with respect to the first opening / closing core 520 and the case 510 as shown in FIGS. 12 to 15 by forming the first spring lower position fixing jaw 516a. The first opening and closing core 520 is supported. Accordingly, as the degree of compression of the first and second springs S1 on the drawing is changed, an imbalance occurs in the repulsive force of the first spring S1 that elastically supports the first opening and closing core 520. Then, the first opening and closing core 520 is inclined in the oblique direction of the first spring (S1), a portion of the side of the first opening and closing core 520 is in close contact with the inner peripheral surface of the case 510.

As such, when the first opening / closing core 520 reciprocates in the case 510 while the predetermined portion of the side surface of the first opening / closing core 520 remains in close contact with the inner circumferential surface of the case 510, the first opening / closing core Even if a gap (Gap) exists between the side of the 520 and the inner circumferential surface of the case 510, the vibration noise during the reciprocating movement of the first opening and closing core 520 can be prevented.

On the other hand, the upper surface of the first opening and closing core 520 forms a second spring seating surface 522 that the lower end of the second spring (S2) is in contact. In addition, a portion of the lower surface of the second opening / closing core 530 except for the portion where the refrigerant flow hole 530b is located forms a second spring seating surface 531 at which the upper end of the second spring S2 contacts.

On the other hand, it is necessary to induce the second opening and closing core 530 in close contact with one side of the case 510 to prevent the generation of vibration noise during the operation of the second opening and closing core 530. To this end, second spring seating surfaces 522 and 531 are formed on an upper surface of the first opening / closing core 520 and a lower surface of the second opening / closing core 530, respectively, and a second spring seating formed on the second opening / closing core 530. The surface 531 has a second spring top position fixing jaw 531a for inducing the upper end of the second spring S2 to be seated to be biased toward either side from the center of the second spring seating surface 531. The second spring seating surface 522 formed on the first opening / closing core 520 has a lower end of the second spring S2 at the center of the second spring seating surface 522 on the first opening / closing core 520. It is preferable that the second spring lower position fixing block 522a is guided to be seated in the seat.

As such, a second spring upper end position fixing jaw 531a is formed on the second spring seating surface 531 formed on the second opening and closing core 530, and a second spring seating is formed on the first opening and closing core 520. By forming the second spring lower position fixing block 522a on the surface 522, the second spring S2 is connected to the second opening and closing core 530 and the case 510 as shown in FIGS. 12 to 15. The second opening and closing core 530 is supported in an obliquely positioned position with respect to the second opening and closing core 530. Accordingly, as the degree of compression of the second spring S2 on the left and right sides of the drawing varies, an imbalance occurs in the repulsive force of the second spring S2 that elastically supports the second opening / closing core 530. Then, the second opening and closing core 530 is inclined in the oblique direction of the second spring (S2), a portion of the side of the second opening and closing core 530 is in close contact with the inner peripheral surface of the case 510.

As such, when the second opening / closing core 530 reciprocates in the case 510 while the predetermined portion of the side surface of the second opening / closing core 530 is kept in close contact with the inner circumferential surface of the case 510, the second opening / closing core Even if a gap Gap exists between the side of the 530 and the inner circumferential surface of the case 510, the shaking noise may be prevented during the reciprocating movement of the second opening / closing core 530.

Meanwhile, as described above, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the first valve chamber V1 and the second valve chamber V2, and the suction port 131 and the second valve chamber are adjusted. When the opening degree of the second opening / closing core 530 is adjusted by the differential pressure between V2, the first opening / closing core 520 acts as a buffer for the operation of the second opening / closing core 530, thereby causing a sudden increase in the initial operation of the compressor. It is possible to smooth the pulsation change by increasing the valve opening degree, to effectively reduce the pulsation of the high frequency components generated when the intake check valve 500 is operated, and to open the intake check valve 500 during the variable operation of the compressor. Can be adjusted appropriately to sufficiently obtain the effect of pulsation improvement.

In addition, by forming the auxiliary discharge port 513 in the case 510, even when the second opening and closing core is lowered to the maximum, the auxiliary discharge port 513 is closed and the opening degree of the suction check valve 500 is shown in FIG. By further reducing the pressure change of the excessive suction port 511 can be prevented, thereby further increasing the effect of the pulsation improvement.

Hereinafter, the swash plate compressor according to the fourth embodiment of the present invention will be described with reference to FIGS. 3 and 4 partially and FIGS. 16 to 19.

16 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a fourth embodiment of the present invention, showing a state in which the opening degree of the suction check valve is minimum, and FIG. 17 is a fourth embodiment of the present invention. A longitudinal cross-sectional view of the suction check valve applied to the swash plate compressor according to the present invention. FIG. 18 is a view showing an opening degree of the suction check valve, and FIG. 18 is a longitudinal cross section of the suction check valve applied to the swash plate compressor according to the fourth embodiment of the present invention. Figure 2 is a view showing a state in which the opening degree of the suction check valve is reduced from the maximum state while the auxiliary discharge port is closed even when the second opening and closing core is lowered maximum, Figure 19 is a swash plate compressor according to a fourth embodiment of the present invention Longitudinal sectional view of the applied suction check valve, showing the state in which the opening degree of the suction check valve is properly adjusted by the interaction between the first valve chamber and the second valve chamber during the variable operation of the compressor. FIG.

The swash plate compressor according to the fourth embodiment of the present invention includes a housing 100, a rotation shaft 200, a swash plate 300, a plurality of pistons 400, and a suction check valve 500. In Figure 3 is similar to the swash plate compressor according to the first embodiment of the present invention as a whole, the structure of the suction check valve 500 is more similar to the swash plate compressor according to the third embodiment of the present invention described above.

However, since there is a difference in a specific part in the configuration of the suction check valve 500, there is a difference in the operation of the opening degree of the suction check valve 500 by this, it will be described below with respect to these differences.

The suction check valve 500 applied to the swash plate compressor according to the fourth embodiment of the present invention has an opening degree adjusted according to the amount of refrigerant flowing through the suction port 131, and the suction port 131 is suction chamber 132. It is installed on the conduit 135 connected to the), and as shown in Figure 16, includes a case 510, the first opening and closing core 520, and the second opening and closing core 530.

In the suction check valve 500 applied to the swash plate compressor according to the fourth embodiment of the present invention, the case 510 is spaced apart from the discharge port 512 and the discharge port 512 by a predetermined distance. The auxiliary discharge port 513 is formed through. In addition, the first opening / closing core 520 is supported on the inner bottom surface of the case 510 via a first spring S1, and together with the case 510, constitutes a first valve chamber V1. . In addition, the second opening / closing core 530 is supported on the upper surface of the first opening / closing core 520 via a second spring S2, and the first opening / closing core 520 is formed together with the first opening / closing core 520 and the case 510. 2 constitute a valve chamber (V2).

However, unlike the case of the third embodiment of the present invention described above, a passage 136 is formed to connect the crank chamber 121 and the conduit 135 so that the pressure of the crank chamber 121 is reduced in the suction check valve 500. It will affect the opening degree.

In addition, a pressure adjusting hole 514 communicating with the first valve chamber V1 and the suction chamber 132 is formed at the lower side of the case 510, and the suction chamber 132 is formed in the first valve chamber V1. The pressure of can act.

In addition, in order to allow the refrigerant to flow from the suction port 511 to the auxiliary discharge port 513, the refrigerant flows to allow the outside of the second opening and closing core 530 to communicate with the second opening and closing core 530. A hole 530b is formed therethrough, and after some of the refrigerant applying pressure to move the second opening / closing core 530 downward through the refrigerant flow hole 530b flows into the second valve chamber V2. It flows into the suction chamber 132 through the auxiliary discharge port 513.

In addition, the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the second opening and closing core 530 is the suction port 131 ) And the opening degree is adjusted by the differential pressure between the second valve chamber V2. In this case, since a communication hole 518 communicating with the passage 136 and the first valve chamber V1 is formed at the lower end of the case 510, the crank chamber 121 of the crank chamber 121 is formed in the first valve chamber V1. The pressure also acts so that the pressure of the first valve chamber V1 for moving the first opening / closing core 520 upwards becomes larger as compared with the case of the first to third embodiments described above.

On the other hand, the case 510 is a portion forming the outer body of the suction check valve 500, is installed on the conduit 135 connecting the suction port 131 to the suction chamber 132, the lower side is shown It is installed on the passage 136 connecting the crank chamber 121 and the conduit 135 as shown. At this time, an O-ring R is installed between the case 510 and the passage 136 to maintain airtightness.

The only difference is that a communication hole 518 is formed in the case 510 for communicating the passage 136 and the first valve chamber V1, and the overall structure of the case 510 and the first opening / closing core 520. , The configuration of the second opening and closing core 530, the first spring (S1), the second spring (S2) is the configuration of the suction check valve 500 applied to the swash plate compressor according to the third embodiment of the present invention described above Since it is the same as the detailed description of the above configuration will be omitted.

In addition, a first spring seating surface 516, 521, and a second spring seating surface 522, 531 are formed on the case 510, the first opening / closing core 520, the second opening / closing core 530, and the first spring seating surface 522, 531. By applying a fixing structure that regulates the end position of the spring (S1) or the second spring (S2) so that the first opening and closing core 520 and the second opening and closing core 530 is in close contact with the inner surface of the case 510. As such, the configuration of the first opening / closing core 520 and the second opening / closing core 530 to prevent generation of vibration noise is the same as in the case of the third embodiment of the present invention. do.

According to the suction check valve 500 applied to the swash plate compressor according to the fourth embodiment of the present invention as described above, the first opening and closing core 520 by the differential pressure between the first valve chamber V1 and the second valve chamber V2. And the first opening and closing core 520 when the opening degree of the second opening and closing core 530 is adjusted by the differential pressure between the suction port 131 and the second valve chamber V2. By acting as a buffer for the operation of the opening and closing core 530, it is possible to smooth the pulsation change by the rapid increase in the valve opening during the initial operation of the compressor, effectively pulsating the high-frequency components generated during the operation of the suction check valve 500 It is possible to reduce, and the opening degree of the suction check valve 500 is appropriately adjusted during variable operation of the compressor to obtain a sufficient effect of the pulsation improvement.

At this time, in the case of the fourth embodiment of the present invention, since the pressure of the crank chamber 121 acts together with the first valve chamber V1, the first opening / closing core 520 for the operation of the second opening / closing core 530 as described above. The buffering effect of can be further increased.

In addition, by forming the auxiliary discharge port 513 in the case 510, even when the second opening and closing core is lowered to the maximum, the auxiliary discharge port 513 is closed and the opening degree of the suction check valve 500 is shown in FIG. By further reducing the pressure change of the excessive suction port 511 can be prevented, thereby further increasing the effect of the pulsation improvement.

Hereinafter, a swash plate compressor according to a fifth embodiment of the present invention will be described with reference to FIGS. 3 and 4 partially and FIGS. 20 to 23.

20 is a longitudinal sectional view of a suction check valve applied to a swash plate compressor according to a fifth embodiment of the present invention, showing a state in which an opening degree of the suction check valve is minimum, and FIG. 21 is a fifth embodiment of the present invention. A longitudinal cross-sectional view of the suction check valve applied to the swash plate compressor according to the present invention is a view showing a state in which the opening degree of the suction check valve is maximum, and FIG. 22 is a longitudinal cross section of the suction check valve applied to the swash plate compressor according to the fifth embodiment of the present invention. Figure 2 is a view showing a state in which the opening degree of the suction check valve is reduced from the maximum state while the auxiliary discharge port is closed even when the second opening and closing core is lowered maximum, Figure 23 is a swash plate compressor according to a fifth embodiment of the present invention Longitudinal sectional view of the applied suction check valve, in which the opening degree of the suction check valve is properly adjusted by the interaction between the first valve chamber, the second valve chamber and the pressure receiving chamber during the compressor variable operation. A diagram showing the state.

The swash plate compressor according to the fifth embodiment of the present invention includes a housing 100, a rotation shaft 200, a swash plate 300, a plurality of pistons 400, and a suction check valve 500. In Figure 3 is similar to the swash plate compressor according to the first embodiment of the present invention as a whole, the structure of the suction check valve 500 is more similar to the swash plate compressor according to the fourth embodiment of the present invention described above.

However, since there is a difference in a specific part in the configuration of the suction check valve 500, there is a difference in the operation of the opening degree of the suction check valve 500 by this, it will be described below with respect to these differences.

The suction check valve 500 applied to the swash plate compressor according to the fifth embodiment of the present invention is opened in accordance with the amount of refrigerant flowing through the suction port 131, and the suction port 131 is suction chamber 132. It is installed on the conduit 135 connected to the), as shown in Figure 20, the case 510, the first opening and closing core 520, the second opening and closing core 530, the pressure receiving chamber 540 Contains').

In the suction check valve 500 applied to the swash plate compressor according to the fifth embodiment of the present invention, the case 510 is spaced apart from the discharge port 512 and the discharge port 512 by a predetermined distance. The auxiliary discharge port 513 is formed through. In addition, the first opening / closing core 520 is supported on the inner bottom surface of the case 510 via a first spring S1, and together with the case 510, constitutes a first valve chamber V1. . In addition, the second opening / closing core 530 is supported on the upper surface of the first opening / closing core 520 via a second spring S2, and the first opening / closing core 520 is formed together with the first opening / closing core 520 and the case 510. 2 constitute a valve chamber (V2).

However, unlike the case of the fourth embodiment of the present invention described above, the pressure receiving chamber 540 'is connected to the first opening / closing core 520 so that the pressure of the crank chamber 121 does not pass through the first valve chamber V1. There is a difference in that it is to act directly on the first opening and closing core 520, because of this difference there is a difference in the specific pressure element involved in the opening degree adjustment to the first opening and closing core 520, as described below.

In addition, a passage 136 connecting the crank chamber 121 and the conduit 135 is formed so that the pressure of the crank chamber 121 affects the opening degree of the suction check valve 500.

In addition, a pressure adjusting hole 514 communicating with the first valve chamber V1 and the suction chamber 132 is formed at the lower side of the case 510, and the suction chamber 132 is formed in the first valve chamber V1. The pressure of can act.

In addition, in order to allow the refrigerant to flow from the suction port 511 to the auxiliary discharge port 513, the refrigerant flows to allow the outside of the second opening and closing core 530 to communicate with the second opening and closing core 530. A hole 530b is formed therethrough, and after some of the refrigerant applying pressure to move the second opening / closing core 530 downward through the refrigerant flow hole 530b flows into the second valve chamber V2. It flows into the suction chamber 132 through the auxiliary discharge port 513.

In addition, the first opening and closing core 520 is adjusted by the pressure difference between the second valve chamber (V2), the first valve chamber (V1) and the crank chamber 121, the second opening and closing core An opening degree is adjusted by the differential pressure between the suction port 131 and the second valve chamber V2. At this time, since the pressure receiving chamber 540 ′ receiving the pressure of the crank chamber 121 is connected to the first opening and closing core 520, the pressure of the crank chamber 121 also acts on the first opening and closing core 520. As a result, the pressure for moving the first opening / closing core 520 upwards becomes larger as compared with the case of the first to third embodiments described above.

On the other hand, the pressure receiving chamber 540 'is a space portion 540a' which receives the pressure of the crank chamber 121 therein so that the pressure of the crank chamber 121 can be applied to the inside of the first opening and closing core 520. ) Is formed, installed inside or integrally formed with the first opening / closing core 520, vertically moving up and down with the first opening / closing core 520 through the guide hole 515 of the case 510. It is formed by hollow cylinders, such as a cylindrical body.

On the other hand, the case 510 is a portion forming the outer body of the suction check valve 500, is installed on the conduit 135 connecting the suction port 131 to the suction chamber 132, the lower side is shown It is installed on the passage 136 connecting the crank chamber 121 and the conduit 135 as shown. At this time, an O-ring R is installed between the case 510 and the passage 136 to maintain airtightness.

The case 510 is formed of a hollow cylinder, such as a cylindrical body, the lower side in the drawing is made of a shape blocked except for the guide hole 515 through which the pressure receiving chamber 540 'can pass, A cover 517 is covered on the upper side in the figure opened toward the suction port 131. In addition, one side of the case 510, that is, the center of the cover 517 is penetrated through the suction port 511 to form a flow path in series with the suction port 131, the other side of the case 510 The discharge port 512 communicating with the suction port 511 and the auxiliary discharge port 513 spaced apart from the discharge port 512 by a predetermined distance in the downward direction are formed through.

On the other hand, the first opening and closing core 520 is moved up and down inside the case 510, the second valve chamber (V2) through the refrigerant flow hole 530b of the inlet 511 and the second opening and closing core 530. As a means for controlling the flow of the refrigerant flowing into the suction chamber 132 through the auxiliary discharge port 513 and intermittently flowing from the suction port 511 of the case 510 to the auxiliary discharge port 513. The suction port 511 of the case 510 is reciprocated in the axial direction according to the pressure of the second valve chamber V2, the pressure of the first valve chamber V1, and the pressure of the crank chamber 121. To adjust the opening degree of the suction check valve 500 leading to the auxiliary discharge port (513). In addition, by changing the pressure of the second valve chamber (V2) and the elastic repulsive force of the second spring (S2) while moving up and down inside the case 510, affects the opening degree of the second opening and closing core (530). Gives.

The first opening and closing core 520 is formed of a hollow cylinder, such as a cylindrical body having an approximately opened upper side, as shown in FIG. And the pressure receiving chamber 540 'is connected or integrally formed at a central portion thereof.

In addition, the first opening / closing core 520 is configured to reciprocate up and down the inside of the case 510. Therefore, in order to suppress noise and vibration, it is preferable that the first opening / closing core 520 is formed on the inner circumferential surface of the case 510 while being in close contact with the inner circumferential surface of the case 510 and sliding in the axial direction along the inner circumferential surface. The first opening and closing core 520 is formed to a size that can be spaced apart from the inner circumferential surface of the case 510 because it may affect the smooth reciprocating movement if too close.

In addition, the first spring (S1) is an elastic resilient means for supporting the first opening and closing core 520 as described above, is installed between the inner bottom of the case 510 and the first opening and closing core 520, the first opening and closing The core 520 is supported and serves to repel the first opening / closing core 520 together with the pressure of the suction chamber 132 introduced through the pressure adjusting hole 514.

On the other hand, the second opening and closing core 530 is a means for controlling the flow of the refrigerant passing through the inlet 511 while moving up and down inside the case 510, the discharge port (145) in the inlet 511 of the case 510 Pressure of the refrigerant flowing through the inlet 511 of the case 510 (also the pressure of the suction port 131) and the pressure of the second valve chamber V2 so as to interrupt the flow of the refrigerant leading to 512. The opening degree of the suction check valve 500 leading from the suction port 511 of the case 510 to the discharge port 512 is adjusted while reciprocating in the axial direction according to the differential pressure therebetween.

The second opening core 530 is formed of a hollow cylinder such as a cylindrical body with a lower side opening, and as shown in FIG. 20, between the first opening / closing core 520 and the second opening / closing core 530. Supported by the second spring (S2) is inserted into the, the center portion is formed with a refrigerant flow hole (530b), the top dead center and the second spring (S2) of the top is restrained by the cover 517 of the case 510 Reciprocate between bottom dead centers where compression is no longer possible.

In addition, an axial groove 530a is formed on the outer circumferential surface of the second opening / closing core 530, so that the refrigerant is formed through the axial groove 530a even when the second opening / closing core 530 is in close contact with the cover 517. The flow rate of the second opening / closing core 530 due to the rapid change in the refrigerant pressure applied to the inlet 511 may be prevented.

In addition, the second opening / closing core 530 is configured to reciprocate up and down the inside of the case 510. Therefore, in order to suppress noise and vibration, it is preferable that the second opening / closing core 530 is formed on the inner circumferential surface of the case 510 while being in close contact with the inner circumferential surface of the case 510 and sliding in the axial direction along the inner circumferential surface. The second opening and closing core 530 is formed to a size that can be spaced apart from the inner circumferential surface of the case 510 because it may affect the smooth reciprocating movement if too close.

In addition, the second spring (S2) is an elastic resilient means for supporting the second opening and closing core 530 as described above, is installed between the upper surface of the first opening and closing core 520 and the second opening and closing core 530, 2 supports the opening and closing core 530, and serves to repel the second opening and closing core 530 against the pressure of the refrigerant flowing through the inlet 511. That is, for example, when there is no pressure of the refrigerant acting through the inlet 511, as shown in FIG. 20, the second opening and closing core 530 is pushed upward as much as possible, while the refrigerant acting through the inlet 511. When the pressure is the maximum, as shown in FIG. 22, the maximum compression toward the first opening and closing core 520 is performed.

On the other hand, the bottom of the inner space of the case 510, that is, the portion except the guide hole 515 of the lower side of the inner space in the drawing, the first spring seating surface 516 in contact with the lower end of the first spring (S1) ). In addition, a lower surface of the first opening / closing core 520 forms a first spring seating surface 521 to which the upper end of the first spring S1 contacts.

On the other hand, it is necessary to induce the first opening and closing core 520 to be in close contact with one side of the case 510 to prevent the generation of vibration noise during the operation of the first opening and closing core 520. To this end, the first spring seating surface 521 formed on the first opening / closing core 520 may be guided so that the upper end of the first spring S1 is biased toward one side from the center of the first spring seating surface 521. A first spring upper position fixing protrusion 521a is formed, and a first spring seating surface 516 formed on the case 510 has a lower end of the first spring S1 on the first spring seating surface 516. It is preferable to form a first spring bottom position fixing projection 516a to induce to be seated in the central portion of the. In addition, the inclined surface 516aa guides the lower end of the first spring S1 to the first spring seating surface 516 formed on the case 510 in the first spring lower position fixing protrusion 516a. It is preferable that this be formed.

As such, the first spring mounting position fixing protrusion 521a is formed on the first spring seating surface 521 formed on the first opening / closing core 520, and the first spring seating surface 516 formed on the case 510 is formed. By forming the first spring lower position fixing projection 516a, the first spring S1 is positioned obliquely with respect to the first opening / closing core 520 and the case 510 as shown in FIGS. 20 to 12. It supports the first opening and closing core 520 in a state. Therefore, the degree of compression of the first and second springs S1 on the left and right sides of the drawing varies with respect to the pressure receiving chamber 540 and is unbalanced to the repulsive force of the first spring S1 that elastically supports the first opening and closing core 520. This will occur. Then, the first opening and closing core 520 is inclined in the oblique direction of the first spring (S1), a portion of the side of the first opening and closing core 520 is in close contact with the inner peripheral surface of the case 510.

As such, when the first opening / closing core 520 reciprocates in the case 510 while the predetermined portion of the side surface of the first opening / closing core 520 remains in close contact with the inner circumferential surface of the case 510, the first opening / closing core Even if a gap (Gap) exists between the side of the 520 and the inner circumferential surface of the case 510, the vibration noise during the reciprocating movement of the first opening and closing core 520 can be prevented.

On the other hand, the upper surface of the first opening and closing core 520 forms a second spring seating surface 522 that the lower end of the second spring (S2) is in contact. In addition, a portion of the lower surface of the second opening / closing core 530 except for the portion where the refrigerant flow hole 530b is located forms a second spring seating surface 531 at which the upper end of the second spring S2 contacts.

On the other hand, it is necessary to induce the second opening and closing core 530 in close contact with one side of the case 510 to prevent the generation of vibration noise during the operation of the second opening and closing core 530. To this end, second spring seating surfaces 522 and 531 are formed on an upper surface of the first opening / closing core 520 and a lower surface of the second opening / closing core 530, respectively, and a second spring seating formed on the second opening / closing core 530. The surface 531 has a second spring top position fixing jaw 531a for inducing the upper end of the second spring S2 to be seated to be biased toward either side from the center of the second spring seating surface 531. The second spring seating surface 522 formed on the first opening / closing core 520 has a lower end of the second spring S2 at the center of the second spring seating surface 522 on the first opening / closing core 520. It is preferable that the second spring lower position fixing block 522a is guided to be seated in the seat.

As such, a second spring upper end position fixing jaw 531a is formed on the second spring seating surface 531 formed on the second opening and closing core 530, and a second spring seating is formed on the first opening and closing core 520. By forming the second spring lower position fixing block 522a on the surface 522, the second spring S2 is formed on the second opening / closing core 530 and the case 510 as shown in FIGS. 20 to 23. The second opening and closing core 530 is supported in an obliquely positioned position with respect to the second opening and closing core 530. Accordingly, as the degree of compression of the second spring S2 on the left and right sides of the drawing varies, an imbalance occurs in the repulsive force of the second spring S2 that elastically supports the second opening / closing core 530. Then, the second opening and closing core 530 is inclined in the oblique direction of the second spring (S2), a portion of the side of the second opening and closing core 530 is in close contact with the inner peripheral surface of the case 510.

As such, when the second opening / closing core 530 reciprocates in the case 510 while the predetermined portion of the side surface of the second opening / closing core 530 is kept in close contact with the inner circumferential surface of the case 510, the second opening / closing core Even if a gap Gap exists between the side of the 530 and the inner circumferential surface of the case 510, the shaking noise may be prevented during the reciprocating movement of the second opening / closing core 530.

Meanwhile, as described above, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the second valve chamber V2, the first valve chamber V1, and the crank chamber 121, and the suction port ( 131 and the first opening and closing core 520 acts as a buffer for the operation of the second opening and closing core 530 when the opening degree of the second opening and closing core 530 is adjusted by the differential pressure between the second valve chamber V2. By doing so, it is possible to smooth the pulsation change by the rapid increase in the valve opening during the initial operation of the compressor, it is possible to effectively reduce the pulsation of the high frequency components generated during the operation of the suction check valve 500, during the variable operation of the compressor The opening degree of the suction check valve 500 is properly adjusted to sufficiently obtain the effect of pulsation improvement.

At this time, in the case of the fifth embodiment of the present invention, since the pressure of the crank chamber 121 acts together with the first opening / closing core 520, the first opening / closing core 520 for the operation of the second opening / closing core 530 as described above. The buffering effect of can be further increased.

In addition, by forming the auxiliary discharge port 513 in the case 510, even when the second opening and closing core is lowered to the maximum, the auxiliary discharge port 513 is closed and the opening degree of the suction check valve 500 is shown in FIG. By further reducing the pressure change of the excessive suction port 511 can be prevented, thereby further increasing the effect of the pulsation improvement.

Hereinafter, with reference to the accompanying drawings will be described the operation of the swash plate compressor according to an embodiment of the present invention.

The swash plate type compressor according to the embodiment of the present invention is configured to vary the opening degree of the suction check valve 500 according to the flow rate of the refrigerant flowing from the external refrigerant line through the suction port 131, 4, the role of the suction check valve 500 becomes more important in the case of the variable displacement swash plate type compressor in which the inclination of the swash plate 300 can be varied.

3, when the inclination of the swash plate 300 is the maximum, the stroke of each piston 400 becomes the maximum, and therefore the amount of the refrigerant flowing from the outside through the suction port 131 becomes maximum do. Accordingly, the second opening / closing core 530 blocking the inlet 511 of the suction check valve 500 has a second spring S2 as shown in FIGS. 6, 10, 14, 18, and 22, respectively. The maximum compression is achieved while the bottom dead center is reached. As such, when the second opening / closing core 530 reaches the bottom dead center, the inlet 511 of the suction check valve 500 as well as the outlet 512 are adjusted to the maximum opening degree. In this case, in the case of the first embodiment shown in FIG. 6, the refrigerant having the maximum flow rate is delivered to the suction chamber 132, the second embodiment shown in FIG. 10, the third embodiment shown in FIG. 14, and FIG. In the case of the fourth embodiment shown in 18 and the fifth embodiment shown in FIG. 22, the refrigerant having the maximum flow rate does not flow into the suction chamber 132, but rather, the auxiliary discharge port 513 shows FIGS. 9 and 13. 17 and 21, the refrigerant having the maximum flow rate is delivered to the suction chamber 132.

Conversely, when the inclination of the swash plate 300 becomes 90 deg. As shown in Fig. 4, the reciprocation of each piston 400 disappears and the piston bores 111 remain stationary. At this time, the amount of the refrigerant flowing through the suction port 131 is minimized, in this case, as shown in Figs. 5, 8, 12, 16, 20, by the reaction force of the second spring (S2) The second opening and closing core 530 is in the raised position as much as possible, the valve opening degree is minimized.

On the other hand, as the inclination of the swash plate 300 is variable during variable operation of the swash plate type compressor, the refrigerant pressure acting on the second opening / closing core 530 through the inlet 511 is changed, but the pressure at the inlet 511 is constant. If it is abnormal, the second opening and closing core 530 is lowered to the maximum even if the maximum variable, and the second spring (S2) is also compressed to the maximum.

However, in this case, in the first embodiment of the present invention, as shown in FIG. 7, the pressure of the suction chamber 132 acts on the first valve chamber V1 through the pressure regulating hole 514 to allow the first opening / closing core 520. Increasing) affects the opening degree of the second opening / closing core 530, and the pressure of the crank chamber 121 acts on the second opening / closing core 530 through the pressure receiving chamber 540. Therefore, the second opening / closing core 530 rises from the maximum lowered point, so that the opening degree of the discharge port 512 can be appropriately adjusted.

In addition, in the second embodiment of the present invention, as shown in FIG. 11, the pressure of the suction chamber 132 acts on the first valve chamber V1 through the pressure regulating hole 514 to allow the first opening / closing core 520. While rising to affect the opening degree of the second opening and closing core 530, the pressure of the crank chamber 121 through the pressure receiving chamber 540 acts on the second opening and closing core 530. Therefore, the second opening / closing core 530 rises from the maximum lowered point, whereby the openings of the discharge holes 512 and the auxiliary discharge holes 513 can be properly adjusted.

In addition, in the third embodiment of the present invention, as shown in FIG. 15, the pressure of the suction chamber 132 acts on the first valve chamber V1 through the pressure adjusting hole 514 to allow the first opening / closing core 520. As the rising and affecting the opening degree of the second opening and closing core 530, the second opening and closing core 530 is raised from the maximum lowered point, accordingly the opening degree of the discharge port 512 and the auxiliary discharge port 513 It can be adjusted appropriately.

In addition, in the fourth embodiment of the present invention, as shown in FIG. 19, the pressure of the suction chamber 132 acts on the first valve chamber V1 through the pressure adjusting hole 514, and also the communication hole 518. The pressure of the crank chamber 121 acts on the first valve chamber V1 through the first opening / closing core 520, thereby affecting the opening degree of the second opening / closing core 530. ) Rises above the maximum lowered point, so that the openings of the discharge port 512 and the auxiliary discharge port 513 can be properly adjusted.

In addition, in the fifth embodiment of the present invention, as shown in FIG. 23, the pressure of the suction chamber 132 acts on the first valve chamber V1 through the pressure adjusting hole 514, and the pressure receiving chamber 540 ′. The pressure of the crank chamber 121 acts on the first opening / closing core 520 to raise the first opening / closing core 520 and affects the opening degree of the second opening / closing core 530, thereby causing the second opening / closing core ( 530 is raised to the maximum lowered point, and thus the openings of the discharge port 512 and the auxiliary discharge port 513 can be properly adjusted.

That is, in the case where the pressure of the suction port 131 is excessive in the situation that is not the maximum variable so that the discharge port 512 can be adjusted to the maximum opening degree by the second opening and closing core 520, In the first and second embodiments, the pressure of the suction chamber 132 acts on the first opening / closing core 520 in a direction opposite to the pressure direction of the suction port 131, and the suction is performed on the second opening / closing core 530. In the direction opposite to the pressure direction of the port 131, the elastic repulsive force of the second spring (S2) or the pressure of the crank chamber 121 according to the rise of the first opening and closing core 520 acts, so As shown, the final adjusted opening degree can be reduced, and in the third embodiment of the present invention, the pressure of the suction chamber 132 is opposite to the pressure direction of the suction port 131 in the first opening / closing core 520. The first opening / closing function in a direction opposite to the pressure direction of the suction port 131 to the second opening / closing core 530. By the elastic repulsive force of the second spring (S2) in accordance with the rise of the fish 520, the final adjusted opening degree can be reduced, as shown in Figure 15, in the case of the fourth and fifth embodiments of the present invention In the opposite direction to the pressure direction of the suction port 131 to the second opening and closing core 530, the elastic repulsive force of the second spring (S2) according to the rise of the first opening and closing core 520 acts, FIG. 19 or FIG. As shown in 23, the final adjusted opening degree can be reduced.

In addition, the first opening and closing core 520 and the second opening and closing core 530 of the suction check valve 500 in the process of operating the suction check valve 500 as described above to adjust the valve opening while moving up and down, the present invention According to each embodiment of the following effects can be obtained.

In the first embodiment of the present invention, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the first valve chamber V1 and the second valve chamber V2, and the suction port 131 The opening degree of the second opening / closing core 530 is adjusted by the differential pressure between the two valve chambers V2 and the crank chamber 121 so that the first opening / closing core 520 acts as a buffer for the operation of the second opening / closing core 530. By doing so, it is possible to smooth the pulsation change by the rapid increase in the valve opening during the initial operation of the compressor, it is possible to effectively reduce the pulsation of the high frequency components generated during the operation of the suction check valve 500, during the variable operation of the compressor The opening degree of the suction check valve 500 is properly adjusted to sufficiently obtain the effect of pulsation improvement.

In addition, in the second embodiment of the present invention, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the first valve chamber V1 and the second valve chamber V2, and the suction port 131 and The opening degree of the second opening / closing core 530 is adjusted by the differential pressure between the second valve chamber V2 and the crank chamber 121 so that the first opening / closing core 520 buffers the operation of the second opening / closing core 530. By playing a role, it is possible to smooth the pulsation change due to the rapid increase in the valve opening during the initial operation of the compressor, it is possible to effectively reduce the pulsation of high frequency components generated during the operation of the suction check valve 500, the variable operation of the compressor The opening degree of the suction suction check valve 500 is properly adjusted to sufficiently obtain the effect of pulsation improvement.

In addition, by forming the auxiliary discharge port 513 in the case 510, even when the second opening and closing core is lowered to the maximum, the auxiliary discharge port 513 is closed and the opening degree of the suction check valve 500 is shown in FIG. By further reducing the pressure change of the excessive suction port 511 can be prevented, thereby further increasing the effect of the pulsation improvement.

In addition, in the third embodiment of the present invention, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the first valve chamber V1 and the second valve chamber V2, and the suction port 131 is provided. The opening degree of the second opening / closing core 530 is adjusted by the differential pressure between the second valve chambers V2, so that the first opening / closing core 520 plays a buffer role in the operation of the second opening / closing core 530, thereby providing an initial compressor. It is possible to moderate the pulsation change by the rapid increase in the valve opening during operation, it is possible to effectively reduce the pulsation of high frequency components generated during the operation of the suction check valve 500, the suction check valve (500) during variable operation of the compressor Can be properly adjusted to obtain a sufficient effect of improving the pulsation.

In addition, by forming the auxiliary discharge port 513 in the case 510, even when the second opening and closing core is lowered to the maximum, the auxiliary discharge port 513 is closed and the opening degree of the suction check valve 500 is shown in FIG. By further reducing the pressure change of the excessive suction port 511 can be prevented, thereby further increasing the effect of the pulsation improvement.

In addition, in the fourth embodiment of the present invention, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the first valve chamber V1 and the second valve chamber V2, and the suction port 131 is provided. The opening degree of the second opening / closing core 530 is adjusted by the differential pressure between the second valve chambers V2, so that the first opening / closing core 520 plays a buffer role in the operation of the second opening / closing core 530, thereby providing an initial compressor. It is possible to moderate the pulsation change by the rapid increase in the valve opening during operation, it is possible to effectively reduce the pulsation of high frequency components generated during the operation of the suction check valve 500, the suction check valve (500) during variable operation of the compressor Can be properly adjusted to obtain a sufficient effect of improving the pulsation. At this time, in the case of the fourth embodiment of the present invention, since the pressure of the crank chamber 121 acts together with the first valve chamber V1, the first opening / closing core 520 for the operation of the second opening / closing core 530 as described above. The buffering effect of can be further increased.

In addition, by forming the auxiliary discharge port 513 in the case 510, even when the second opening and closing core is lowered to the maximum, the auxiliary discharge port 513 is closed and the opening degree of the suction check valve 500 is shown in FIG. It is possible to further reduce the pressure change of the excessive inlet 511 to be reduced, thereby further increasing the effect of the pulsation improvement.

In addition, in the fifth embodiment of the present invention, the opening degree of the first opening / closing core 520 is adjusted by the differential pressure between the second valve chamber V2 and the first valve chamber V1 and the crank chamber 121. The opening degree of the second opening / closing core 530 is adjusted by the differential pressure between the suction port 131 and the second valve chamber V2 so that the first opening / closing core 520 of the second opening / closing core 530 is adjusted. By acting as a buffer to the operation, it is possible to moderate the pulsation change by the rapid increase in the valve opening during the initial operation of the compressor, it is possible to effectively reduce the pulsation of the high frequency components generated during the operation of the suction check valve 500, The opening degree of the suction check valve 500 is adjusted appropriately during the variable operation of the pulsator to sufficiently obtain the effect of pulsation improvement. At this time, in the case of the fifth embodiment of the present invention, since the pressure of the crank chamber 121 acts together with the first opening / closing core 520, the first opening / closing core 520 for the operation of the second opening / closing core 530 as described above. The buffering effect of can be further increased.

In addition, by forming the auxiliary discharge port 513 in the case 510, even when the second opening and closing core is lowered to the maximum, the auxiliary discharge port 513 is closed and the opening degree of the suction check valve 500 is shown in FIG. By further reducing the pressure change of the excessive suction port 511 can be prevented, thereby further increasing the effect of the pulsation improvement.

In addition, in the first to fifth embodiments of the present invention, the first spring S1 and the second opening / closing core 530 supporting the first opening / closing core 520 during the operation of the suction check valve 500 are operated. Since the second spring (S2) for supporting the always inclined in an oblique direction, a portion of the side of the first opening and closing core 520 and the second opening and closing core 530 is in close contact with the inner peripheral surface of the case 510 The reciprocating movement inside the furnace case 510 is performed. Therefore, even if a gap Gap exists between the side surfaces of the first opening and closing core 520 and the second opening and closing core 530 and the inner circumferential surface of the case 510, the first opening and closing core 520 and the second opening and closing core 530. When the reciprocating movement of the shaking noise can be prevented.

According to the swash plate compressor according to the embodiment of the present invention described above, by configuring two open and close cores of the intake check valve and arranging them in series, two valve chambers are formed to interact with each of the open and close cores. The pulsation of the component can be effectively reduced, and by applying a fixing structure that regulates the end position of the spring to the spring seating surface where the spring is in contact with the opening core or the case, the opening and closing core works in close contact with the inner side of the case, It is possible to prevent the generation of vibration noise during the operation of the opening and closing core.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that the invention may be variously modified and changed.

100: housing 110: cylinder block
120: front head 121: crankcase
130: rear head 131: suction port
132: suction chamber 135: channel
136: passage 200: rotating shaft
300: swash plate 400: piston
500: Suction check valve 510: Case
511: suction port 512: discharge port
513: secondary discharge port 514: pressure adjustment hole
515: the guide hole 517: the cover
518: communication hole 520: first opening and closing core
530: second opening and closing core 530a: axial groove
530b: refrigerant flow hole 535: communication block
540: pressure receiving chamber 540 ′; Pressure receiving chamber
S1: first spring S2: second spring
V1: first valve chamber V2: second valve chamber

Claims (31)

A cylinder block 110 having a plurality of cylinder bores 111 formed therein and a front head 120 disposed in front of the cylinder block 110 and formed with a crank chamber 121, And a rear head (130) having a port (131), a suction chamber (132), a discharge port and a discharge chamber (134) formed therein to form an outer body;
A rotating shaft 200 rotatably mounted to penetrate one side of the housing 100;
A swash plate 300 installed on the rotary shaft 200 to be integrally rotated with the rotary shaft 200 and installed so that an angle with respect to the rotary shaft 200 can be changed so that the amount of refrigerant discharge can be adjusted;
And is linearly reciprocated along the inner circumferential surface of the cylinder bore 111 by the rotation of the swash plate 300 so as to be reciprocated relative to the edge of the swash plate 300, A plurality of pistons (400) for compressing the refrigerant and discharging the compressed refrigerant to the discharge chamber (134); And
The discharge port 512 is installed on the conduit 135 connecting the suction port 131 to the suction chamber 132, and the suction port 511 penetrates on one side thereof, and the discharge port 512 communicates with the suction port 511 on the other side thereof. A first opening / closing core 520 supported through the case 510 and the case 510 via the first spring S1 and constituting the first valve chamber V1 together with the case 510. And a second valve chamber V2 supported on the upper surface of the first opening / closing core 520 via the second spring S2, together with the first opening / closing core 520 and the case 510. It includes; a suction check valve 500 including a second opening and closing core 530 to include,
A passage 136 connecting the crank chamber 121 and the conduit 135 is formed, and a pressure regulating hole communicating the first valve chamber V1 and the suction chamber 132 in the lower side of the case 510. 514 is formed, the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the second opening and closing core 530 is The swash plate compressor characterized in that the opening degree is adjusted by the differential pressure between the suction port (131), the second valve chamber (V2) and the crank chamber (121). The method according to claim 1,
The suction check valve 500 is positioned inside the second opening / closing core 530 so that the pressure of the crank chamber 121 may be applied to the inside of the second opening / closing core 530. It further comprises a pressure receiving chamber 540 for receiving the pressure of the first opening and closing the core 520 and the case 510, the pressure receiving chamber to move up and down integrally with the second opening and closing core 530. Swash plate compressor. The method according to claim 2,
The case 510 is formed of a hollow cylinder having a guide hole 515 through which the pressure receiving chamber 540 penetrates, and the first opening / closing core 520 is axially along an inner circumferential surface of the case 510. It is moved up and down, and the through hole 520a through which the pressure receiving chamber 540 penetrates is formed in the center portion, and is formed as a hollow cylinder having an upper side opened, and the pressure receiving chamber 540 is the guide hole 515. And a hollow cylinder that moves up and down along the through hole 520a, and the second opening / closing core 530 moves up and down in the axial direction along the inner circumferential surface of the case 510, and has a hollow opening with a lower side thereof. A swash plate type compressor characterized by being formed in a cylinder. A cylinder block 110 having a plurality of cylinder bores 111 formed therein and a front head 120 disposed in front of the cylinder block 110 and formed with a crank chamber 121, And a rear head (130) having a port (131), a suction chamber (132), a discharge port and a discharge chamber (134) formed therein to form an outer body;
A rotating shaft 200 rotatably mounted to penetrate one side of the housing 100;
A swash plate 300 installed on the rotary shaft 200 to be integrally rotated with the rotary shaft 200 and installed so that an angle with respect to the rotary shaft 200 can be changed so that the amount of refrigerant discharge can be adjusted;
And is linearly reciprocated along the inner circumferential surface of the cylinder bore 111 by the rotation of the swash plate 300 so as to be reciprocated relative to the edge of the swash plate 300, A plurality of pistons (400) for compressing the refrigerant and discharging the compressed refrigerant to the discharge chamber (134); And
A discharge port 512 installed on a conduit 135 connecting the suction port 131 to the suction chamber 132, and having a suction port 511 penetrating on one side thereof and communicating with the suction port 511 on the other side; The case 510 through which the auxiliary discharge port 513 positioned to be spaced downward from the discharge port 512 by a predetermined distance is passed through the case 510, and the case 510 is supported by the first spring S1, and the case ( A first opening / closing core 520 constituting the first valve chamber V1 and the first opening / closing core 520 and a second spring S2 are supported on the upper surface of the first opening / closing core 520. In addition to the core 520 and the case 510, the refrigerant may flow from the second opening / closing core 530 constituting the second valve chamber V2 and the suction outlet 511 to the auxiliary discharge port 513. The communication block 535 is provided on the second opening and closing core 530 and has an auxiliary flow path 534 to communicate the outside and the inside of the second opening and closing core 530. Includes; suction check valve 500
A passage 136 connecting the crank chamber 121 and the conduit 135 is formed, and a pressure regulating hole communicating the first valve chamber V1 and the suction chamber 132 in the lower side of the case 510. 514 is formed, the first opening and closing core 520 is adjusted by the pressure difference between the first valve chamber (V1) and the second valve chamber (V2), the second opening and closing core 530 is The swash plate compressor characterized in that the opening degree is adjusted by the differential pressure between the suction port (131), the second valve chamber (V2) and the crank chamber (121). The method of claim 4,
The suction check valve 500 is connected to the communication block 535 to receive the pressure of the crank chamber 121 so that the pressure of the crank chamber 121 can be applied to the inside of the second opening and closing core 530. And a pressure receiving chamber 540 that vertically moves up and down with the communication block 535 and the second opening and closing core 530 through the first opening and closing core 520 and the case 510. Swash plate compressor. The method according to claim 5,
The case 510 is formed of a hollow cylinder having a guide hole 515 through which the pressure receiving chamber 550 penetrates, and the first opening / closing core 520 is axially along an inner circumferential surface of the case 510. It moves up and down, the through-hole 520a through which the pressure receiving chamber 550 penetrates is formed in the center portion, and is formed as a hollow cylinder having an upper side opened, and the pressure receiving chamber 540 is the guide hole 515. And a hollow cylinder that moves up and down along the through hole 520a, and the second opening / closing core 530 moves up and down in the axial direction along the inner circumferential surface of the case 510, and has a hollow opening with a lower side thereof. A swash plate type compressor characterized by being formed in a cylinder. The method according to claim 3 or 6,
First spring seating surfaces 516 and 521 are formed on an inner bottom surface of the case 510 and a bottom surface of the first opening / closing core 520, respectively, and first spring seating surfaces 521 formed on the first opening / closing core 520. ) Is a first spring top position fixing projection (521a) is formed to guide the upper end of the first spring (S1) to be seated biased toward either side from the center portion of the first spring seating surface (521) Swash plate compressor. The method of claim 7,
A first spring lower position fixing protrusion for inducing a lower end of the first spring S1 to be seated at a central portion of the first spring seating surface 516 on the first spring seating surface 516 formed on the case 510. A swash plate compressor, characterized in that 516a is formed. The method according to claim 8,
The spring lower position fixing protrusion 516a has an inclined surface 516aa for inducing a lower end of the first spring S1 to be smoothly seated on the spring seating surface 516 formed on the case 510. Swash plate compressor. The method according to claim 3 or 6,
Second spring seating surfaces 522 and 531 are formed on an upper surface of the first opening and closing core 520 and a bottom surface of the second opening and closing core 530, respectively, and second spring seating surfaces formed on the second opening and closing core 530. 531 has a second spring top position fixing latching jaw 531a which guides the upper end of the second spring S2 to be biased from one side of the center portion of the second spring seating surface 531. Swash plate compressor. The method of claim 10,
The second spring seating surface 522 formed on the first opening / closing core 520 has a lower end of the second spring S2 at a central portion of the second spring seating surface 522 formed on the first opening / closing core 520. A swash plate type compressor, characterized in that a second spring bottom position fixing block (522a) is guided to be seated. A cylinder block 110 having a plurality of cylinder bores 111 formed therein and a front head 120 disposed in front of the cylinder block 110 and formed with a crank chamber 121, And a rear head (130) having a port (131), a suction chamber (132), a discharge port and a discharge chamber (134) formed therein to form an outer body;
A rotating shaft 200 rotatably mounted to penetrate one side of the housing 100;
A swash plate 300 installed on the rotary shaft 200 to be integrally rotated with the rotary shaft 200 and installed so that an angle with respect to the rotary shaft 200 can be changed so that the amount of refrigerant discharge can be adjusted;
And is linearly reciprocated along the inner circumferential surface of the cylinder bore 111 by the rotation of the swash plate 300 so as to be reciprocated relative to the edge of the swash plate 300, A plurality of pistons (400) for compressing the refrigerant and discharging the compressed refrigerant to the discharge chamber (134); And
A discharge port 512 installed on a conduit 135 connecting the suction port 131 to the suction chamber 132 and having a suction port 511 penetrating at one side thereof and communicating with the suction port 511 at the other side thereof; The case 510 through which the auxiliary discharge port 513 positioned to be spaced downward from the discharge port 512 by a predetermined distance is passed through the case 510, and the case 510 is supported by the first spring S1, and the case ( A first opening / closing core 520 constituting the first valve chamber V1 and the first opening / closing core 520 and a second spring S2 are supported on the upper surface of the first opening / closing core 520. In addition to the core 520 and the case 510 includes a second opening and closing core 530 constituting the second valve chamber (V2), the refrigerant flows from the inlet 511 to the auxiliary discharge port (513). The suction body is formed so that the refrigerant flow hole 530b penetrates the second opening / closing core 530 so that the outside and the inside of the second opening / closing core 530 communicate with each other. Includes; valve 500
A pressure adjusting hole 514 communicating with the first valve chamber V1 and the suction chamber 132 is formed below the case 510, and the first opening / closing core 520 is formed in the first valve chamber ( The opening degree is adjusted by the differential pressure between V1) and the second valve chamber V2, and the opening and closing angle of the second opening / closing core 530 is adjusted by the differential pressure between the suction port 131 and the second valve chamber V2. Swash plate compressor, characterized in that. The method of claim 12,
The case 510 is formed of a hollow cylinder, the first opening and closing core 520 is moved up and down in the axial direction along the inner circumferential surface of the case 510, the upper side is formed of a hollow cylinder with an opening, The second open / close core 530 moves up and down in the axial direction along the inner circumferential surface of the case 510 and is formed of a hollow cylinder having an open lower side. The method according to claim 13,
First spring seating surfaces 516 and 521 are formed on an inner bottom surface of the case 510 and a bottom surface of the first opening / closing core 520, respectively, and first spring seating surfaces 521 formed on the first opening / closing core 520. ) Is a first spring top position fixing projection (521a) is formed to guide the upper end of the first spring (S1) to be seated biased toward either side from the center portion of the first spring seating surface (521) Swash plate compressor. The method according to claim 14,
The first spring seating surface 516 formed on the case 510 is fixed to a lower position of the first spring to guide the lower end of the first spring S1 to be biased toward one side of the first spring seating surface 516. Swash plate type compressor, characterized in that the engaging jaw (516a) is formed. The method according to claim 13,
Second spring seating surfaces 522 and 531 are formed on an upper surface of the first opening and closing core 520 and a bottom surface of the second opening and closing core 530, respectively, and second spring seating surfaces formed on the second opening and closing core 530. 531 has a second spring top position fixing latching jaw 531a which guides the upper end of the second spring S2 to be biased from one side of the center portion of the second spring seating surface 531. Swash plate compressor. 18. The method of claim 16,
The second spring seating surface 522 formed on the first opening / closing core 520 has a lower end of the second spring S2 at a central portion of the second spring seating surface 522 formed on the first opening / closing core 520. A swash plate type compressor, characterized in that a second spring bottom position fixing block (522a) is guided to be seated. A cylinder block 110 having a plurality of cylinder bores 111 formed therein and a front head 120 disposed in front of the cylinder block 110 and formed with a crank chamber 121, And a rear head (130) having a port (131), a suction chamber (132), a discharge port and a discharge chamber (134) formed therein to form an outer body;
A rotating shaft 200 rotatably mounted to penetrate one side of the housing 100;
A swash plate 300 installed on the rotary shaft 200 to be integrally rotated with the rotary shaft 200 and installed so that an angle with respect to the rotary shaft 200 can be changed so that the amount of refrigerant discharge can be adjusted;
And is linearly reciprocated along the inner circumferential surface of the cylinder bore 111 by the rotation of the swash plate 300 so as to be reciprocated relative to the edge of the swash plate 300, A plurality of pistons (400) for compressing the refrigerant and discharging the compressed refrigerant to the discharge chamber (134); And
A discharge port 512 installed on a conduit 135 connecting the suction port 131 to the suction chamber 132 and having a suction port 511 penetrating at one side thereof and communicating with the suction port 511 at the other side thereof; The case 510 through which the auxiliary discharge port 513 positioned to be spaced downward from the discharge port 512 by a predetermined distance is passed through the case 510, and the case 510 is supported by the first spring S1, and the case ( A first opening / closing core 520 constituting the first valve chamber V1 and the first opening / closing core 520 and a second spring S2 are supported on the upper surface of the first opening / closing core 520. In addition to the core 520 and the case 510 includes a second opening and closing core 530 constituting the second valve chamber (V2), the refrigerant flows from the inlet 511 to the auxiliary discharge port (513). The suction body is formed so that the refrigerant flow hole 530b penetrates the second opening / closing core 530 so that the outside and the inside of the second opening / closing core 530 communicate with each other. Includes; valve 500
A passage 136 connecting the crank chamber 121 and the conduit 135 is formed, and a pressure regulating hole communicating the first valve chamber V1 and the suction chamber 132 in the lower side of the case 510. 514 is formed, the first opening and closing core 520 is the opening degree is adjusted by the pressure difference between the second valve chamber (V2) and the first valve chamber (V1), the second opening and closing core ( 530 is a swash plate type compressor, characterized in that the opening degree is adjusted by the differential pressure between the suction port (131) and the first valve chamber (V1). 19. The method of claim 18,
The case 510 is formed of a hollow cylinder having a communication hole 518 communicating with the passage 136 and the first valve chamber V1, and the first opening / closing core 520 is the case 510. It moves up and down in the axial direction along the inner circumferential surface of the upper side is formed of a hollow cylindrical body, the second opening and closing core 530 moves up and down in the axial direction along the inner circumferential surface of the case 510, the lower side opening The swash plate compressor characterized in that it is formed of a hollow cylinder. The method of claim 19,
First spring seating surfaces 516 and 521 are formed on an inner bottom surface of the case 510 and a bottom surface of the first opening / closing core 520, respectively, and first spring seating surfaces 521 formed on the first opening / closing core 520. ) Is a first spring top position fixing projection (521a) is formed to guide the upper end of the first spring (S1) to be seated biased toward either side from the center portion of the first spring seating surface (521) Swash plate compressor. The method of claim 20,
The first spring seating surface 516 formed on the case 510 has a lower end of the first spring which induces the lower end of the first spring S1 to be biased from one side of the center portion of the first spring seating surface 516. Swash plate-type compressor, characterized in that the position fixing jaw (516a) is formed. The method of claim 19,
Second spring seating surfaces 522 and 531 are formed on an upper surface of the first opening and closing core 520 and a bottom surface of the second opening and closing core 530, respectively, and second spring seating surfaces formed on the second opening and closing core 530. 531 has a second spring top position fixing latching jaw 531a which guides the upper end of the second spring S2 to be biased from one side of the center portion of the second spring seating surface 531. Swash plate compressor. 23. The method of claim 22,
The second spring seating surface 522 formed on the first opening / closing core 520 has a lower end of the second spring S2 at a central portion of the second spring seating surface 522 formed on the first opening / closing core 520. A swash plate type compressor, characterized in that a second spring bottom position fixing block (522a) is guided to be seated. A cylinder block 110 having a plurality of cylinder bores 111 formed therein and a front head 120 disposed in front of the cylinder block 110 and formed with a crank chamber 121, And a rear head (130) having a port (131), a suction chamber (132), a discharge port and a discharge chamber (134) formed therein to form an outer body;
A rotating shaft 200 rotatably mounted to penetrate one side of the housing 100;
A swash plate 300 installed on the rotary shaft 200 to be integrally rotated with the rotary shaft 200 and installed so that an angle with respect to the rotary shaft 200 can be changed so that the amount of refrigerant discharge can be adjusted;
And is linearly reciprocated along the inner circumferential surface of the cylinder bore 111 by the rotation of the swash plate 300 so as to be reciprocated relative to the edge of the swash plate 300, A plurality of pistons (400) for compressing the refrigerant and discharging the compressed refrigerant to the discharge chamber (134); And
A discharge port 512 installed on a conduit 135 connecting the suction port 131 to the suction chamber 132 and having a suction port 511 penetrating at one side thereof and communicating with the suction port 511 at the other side thereof; The case 510 through which the auxiliary discharge port 513 positioned to be spaced downward from the discharge port 512 by a predetermined distance is passed through the case 510, and the case 510 is supported by the first spring S1, and the case ( A first opening / closing core 520 constituting the first valve chamber V1 and the first opening / closing core 520 and a second spring S2 are supported on the upper surface of the first opening / closing core 520. In addition to the core 520 and the case 510 includes a second opening and closing core 530 constituting the second valve chamber (V2), the refrigerant flows from the inlet 511 to the auxiliary discharge port (513). The suction body is formed so that the refrigerant flow hole 530b penetrates the second opening / closing core 530 so that the outside and the inside of the second opening / closing core 530 communicate with each other. Includes; valve 500
A passage 136 connecting the crank chamber 121 and the conduit 135 is formed, and a pressure regulating hole communicating the first valve chamber V1 and the suction chamber 132 in the lower side of the case 510. 514 is formed, the first opening and closing core 520 is the opening degree is adjusted by the pressure difference between the second valve chamber (V2), the first valve chamber (V1) and the crank chamber 121, The second opening and closing core 530 is a swash plate type compressor, characterized in that the opening degree is adjusted by the differential pressure between the suction port 131 and the first valve chamber (V1). 27. The method of claim 24,
The suction check valve 500 is positioned outside the first opening / closing core 520 so that the pressure of the crank chamber 121 may be applied to the outside of the first opening / closing core 520 so that the crank chamber 121 may be provided. The swash plate compressor further comprises a pressure receiving chamber (540 ') that receives the pressure of the through, and vertically moves through the case (510) and the first opening and closing core (520). 26. The method of claim 25,
The case 510 is formed of a hollow cylinder having a guide hole 515 through which the pressure receiving chamber 540 ′ is formed, and the first opening / closing core 520 is formed along an inner circumferential surface of the case 510. Is moved up and down in the direction, the upper side is formed of a hollow cylinder, the second opening and closing core 530 moves up and down in the axial direction along the inner circumferential surface of the case 510, the lower side into a hollow cylinder Swash plate compressor, characterized in that formed. 27. The method of claim 26,
First spring seating surfaces 516 and 521 are formed on an inner bottom surface of the case 510 and a bottom surface of the first opening / closing core 520, respectively, and first spring seating surfaces 521 formed on the first opening / closing core 520. ) Is a first spring top position fixing projection (521a) is formed to guide the upper end of the first spring (S1) to be seated biased toward either side from the center portion of the first spring seating surface (521) Swash plate compressor. 28. The method of claim 27,
A first spring lower position fixing protrusion for inducing a lower end of the first spring S1 to be seated at a central portion of the first spring seating surface 516 on the first spring seating surface 516 formed on the case 510. A swash plate compressor, characterized in that 516a is formed. 29. The method of claim 28,
The spring lower position fixing protrusion 516a has an inclined surface 516aa for inducing a lower end of the first spring S1 to be smoothly seated on the spring seating surface 516 formed on the case 510. Swash plate compressor. 27. The method of claim 26,
Second spring seating surfaces 522 and 531 are formed on an upper surface of the first opening and closing core 520 and a bottom surface of the second opening and closing core 530, respectively, and second spring seating surfaces formed on the second opening and closing core 530. 531 has a second spring top position fixing latching jaw 531a which guides the upper end of the second spring S2 to be biased from one side of the center portion of the second spring seating surface 531. Swash plate compressor. 32. The method of claim 30,
The second spring seating surface 522 formed on the first opening / closing core 520 has a lower end of the second spring S2 at a central portion of the second spring seating surface 522 formed on the first opening / closing core 520. A swash plate type compressor, characterized in that a second spring bottom position fixing block (522a) is guided to be seated.

Images