KR101877259B1 - Variable displacement swash plate type compressor - Google Patents

Abstract

The present invention relates to a variable capacity swash plate type compressor, and more particularly to a variable capacity swash plate type compressor which includes a sensing body 710 that moves in conjunction with the operation of a discharge check valve 500 or a suction check valve 600, And a sensor 720 for detecting the flow rate of the fluid. The variable capacity swash plate type compressor is configured such that a sensor for sensing the magnetic flux density change of the sensing element 710 that operates in conjunction with the discharge check valve 500 or the suction check valve 600 is connected to the suction chamber 132 or the discharge chamber 134, it is possible to prevent the flow rate drop phenomenon, which has been a problem of the prior art, and to maintain the accuracy of the measured value even at a low flow rate.

Description

[0001] DESCRIPTION [0002] VARIABLE DISPLACEMENT SWASH PLATE TYPE COMPRESSOR [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swash plate type compressor, and more particularly, to a variable displacement swash plate type compressor capable of reducing variation in engine speed and improving fuel efficiency by detecting torque variation of a compressor.

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.

On the other hand, as the swash plate type compressor, there are fixed capacity type and variable capacity type. These compressors are driven by receiving power from the rotational force of the engine of the vehicle. In the fixed capacity type, an electromagnetic clutch is provided to control the operation of the swash plate type compressor. However, in the case of the fixed capacity type having the electromagnetic clutch, there is a problem that the RPM of the vehicle flows when the compressor is driven or stopped, thereby hindering stable vehicle operation.

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

FIG. 1 shows the construction of a general variable capacity swash plate type compressor. Hereinafter, a schematic configuration of the variable displacement swash plate type compressor will be described with reference to FIG.

A variable capacity swash plate type compressor 10 is provided with a cylinder block 20 forming a part of an outer appearance and a skeleton of the compressor 10. At this time, a center bore 21 is formed through the center of the cylinder block 20, and a rotation shaft 60 is rotatably installed in the center bore 21. [

A plurality of cylinder bores 22 are formed through the cylinder block 20 so as to radially surround the center bore 21. A piston 70 is installed in the cylinder bore 22 so as to reciprocate linearly. At this time, the piston 70 is formed in a cylindrical shape, and the cylinder bore 22 is a cylindrical space corresponding to the cylinder bore 22. The refrigerant in the cylinder bore 22 is compressed by the reciprocating motion of the piston 70.

The front housing 30 is coupled to the front of the cylinder block 20. The front housing 30 faces the cylinder block 20 to form a crank chamber 31 together with the cylinder block 20. [

A pulley 32 connected to an external power source such as an engine is rotatably mounted on the front of the front housing 30 so that the rotary shaft 60 rotates in conjunction with the rotation of the pulley 32.

A rear housing (40) is coupled to the rear of the cylinder block (20). A discharge chamber 41 is formed in the rear housing 40 along a position adjacent to the outer circumferential edge of the rear housing 40 so as to selectively communicate with the cylinder bore 22. The discharge chamber 41 is formed in a radial direction of the discharge chamber 41 A suction chamber 42 is formed at the center of the rear housing 40.

A valve plate 50 is interposed between the cylinder block 20 and the rear housing 40 and the discharge chamber 41 is connected to the cylinder bore 22 through the discharge port 51 formed in the valve plate 50. [ And the suction chamber 42 communicates with the cylinder bore 22 through the suction port 52 of the valve plate 50. [

The swash plate 61 is provided on the rotary shaft 60. The swash plate 61 is connected to the respective pistons 70 by a shoe 62 provided along the rim of the swash plate 61. By the rotation of the swash plate 61, (70) reciprocates linearly in the cylinder bore (22).

The angle of the swash plate 61 relative to the rotary shaft 60 is variable so that the refrigerant discharge amount of the compressor 10 can be adjusted. To this end, the discharge chamber 41 and the crank chamber 31 are communicated with each other Is controlled by a pressure control valve (not shown).

On the other hand, in the case of the variable displacement swash plate type compressor, since the compression load variation of the compressor is connected to the engine load variation, it is necessary to detect the torque variation of the compressor and to control the engine rotation speed in consideration of the detection torque variation.

Fig. 2 shows a flow rate detecting apparatus disclosed in Japanese Unexamined Patent Application Publication No. 2007-303416 as a conventional technique for detecting the torque fluctuation of such a compressor.

The flow rate detecting device shown in Fig. 2 is provided in a discharge flange 2 serving as a flange member joined to the outside of the cylinder block 1, and includes a movable portion 3 accommodated in the discharge flange 2, A coil spring 4 for resiliently supporting the movable body 3 and a magnetic sensor 5 as a detection sensor fixed to the surface of the discharge flange 2. The coil spring 4 has a body 3,

At this time, in the process of moving the movable body 3 up and down by the pressure difference between the high pressure chamber 6a and the low pressure chamber 6b, the magnetic flux density change of the magnet 3a is detected by the magnetic sensor 5, It is to be appreciated that the amplifier 7 which receives the detection value from the magnetic sensor 5 via the connection line 7a calculates the discharge capacity of the compressor on the basis of the flow rate data and performs the feedback control of the pressure regulating valve, As shown in FIG.

However, in the conventional flow rate detecting device as described above, there is a problem that the flow rate is reduced by forming a separate throttle portion between the high-pressure chamber and the low-pressure chamber for installing the movable body. When the throttle portion is of a fixed size, There is a problem that the accuracy of the measured value is decreased.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the problems as described above, and it is an object of the present invention to provide a sensor which operates in conjunction with a discharge check valve or a suction check valve and detects a change in magnetic flux density of the sensing body, And it is an object of the present invention to provide a variable displacement swash plate type compressor capable of preventing the flow rate drop phenomenon and maintaining the accuracy of the measured value even at a low flow rate.

According to an aspect of the present invention, there is provided a variable displacement 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 having a suction port, a suction port, a discharge port, and a discharge chamber, a rotary shaft mounted to be rotatable through one side of the housing, and a rotary shaft integrally rotated with the rotary shaft A swash plate installed so that an angle with respect to the rotating shaft can be varied so that a refrigerant discharge amount can be adjusted; a swash plate connected to a peripheral portion of the swash plate so as to be relatively movable with respect to the inner surface of the cylinder bore, By performing reciprocating motion, the refrigerant sucked through the suction port is compressed And a suction check valve provided on a line connecting the discharge check valve provided in the discharge chamber or the suction chamber to the suction chamber, And a sensor for detecting the proximity or spacing of the sensing element, the sensing element being disposed to face the sensing element on one side of the sensing element.

It is preferable that the sensing element is made of a magnetic material, and the sensor is a magnetic sensor for detecting a change in the magnetic flux density of the sensing element.

Wherein the discharge check valve includes a case having a suction port formed on one side thereof and having a discharge port communicating with the suction port on the other side thereof and a guide hole formed on the other side thereof, And a connection rod disposed inside the opening and closing core and passing through the guide hole of the case and moving integrally with the opening and closing core, Preferably, the lugs are provided on one side of the connecting rod projecting out of the case.

Wherein the discharge check valve includes a case having a suction port formed at one side thereof and having a discharge port communicating with the suction port at the other side thereof, and a valve member movably installed inside the case, the flow rate of the refrigerant flowing from the suction port to the discharge port Wherein the sensing element is located on one side of the opening / closing core on the inside of the case, is supported on the inside of the case through an auxiliary spring, and is connected to the opening / .

It is preferable that the elastic modulus of the main spring is greater than or equal to the elastic modulus of the auxiliary spring.

Wherein the discharge check valve comprises a main division chamber having a suction port formed at one side thereof and a discharge port communicating with the suction port at the other side thereof and having a guide hole formed at one side thereof and an auxiliary compartment formed at one side of the main division chamber, An opening / closing core which is supported on the inside of the main compartment through a first spring to adjust the flow of the refrigerant leading from the inlet to the outlet, and a case which is located inside the opening and closing core, A connecting rod which penetrates through the guide hole and moves integrally with the opening and closing core; and a support plate which is disposed in the auxiliary partition and is installed at one side of the connecting rod, the sensing body being located in the auxiliary partition, And a third spring is interposed between the support plate and the third spring, It is preferred.

It is preferable that the elastic modulus of the third spring is greater than or equal to the modulus of elasticity of the second spring.

According to the above-described variable displacement swash plate type compressor, a sensing element that operates in conjunction with the discharge check valve or the suction check valve is provided, and a sensor for sensing the change in the magnetic flux density of the sensing element is disposed at a position adjacent to the suction chamber or the discharge chamber The flow rate reduction phenomenon can be prevented and the accuracy of the measured value can be maintained even at a low flow rate.

1 is a sectional view of a general variable displacement swash plate type compressor.
2 is a block diagram of a conventional flow rate detecting device.
3 is a longitudinal sectional view of a variable displacement swash plate type compressor according to the present invention, in which the swash plate is inclined with respect to the rotation axis.
FIG. 4 is a longitudinal sectional view of a variable displacement swash plate type compressor according to the present invention, showing a swash plate erected in a radial direction of a rotary shaft; FIG.
5 is a schematic partial cross-sectional view of a variable displacement swash plate type compressor according to a first embodiment of the present invention.
6 is a schematic partial cross-sectional view of a variable displacement swash plate type compressor according to a second embodiment of the present invention.
7 is a schematic view showing a partial cross-sectional view of a variable capacity swash plate type compressor according to a third embodiment of the present invention.

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

FIG. 3 is a vertical sectional view of a variable displacement swash plate type compressor according to the present invention, in which the swash plate is inclined with respect to the rotary shaft, and FIG. 4 is a longitudinal sectional view of the variable displacement swash plate type compressor according to the present invention, FIG. 5 is a schematic view showing a partial cross-section of a variable capacity swash plate type compressor according to a first embodiment of the present invention, and FIG. 6 is a cross-sectional view of a second embodiment of the present invention FIG. 7 is a schematic view showing a partial cross-sectional view of a variable capacity swash plate type compressor according to a third embodiment of the present invention. FIG.

First, a variable displacement swash plate type compressor according to a first embodiment of the present invention will be described with reference to FIGS. 3 to 5. FIG. The variable displacement swash plate compressor according to the first embodiment of the present invention includes a housing 100, a rotary shaft 200, a swash plate 300, a plurality of pistons 400, a discharge check valve 500, A suction check valve 600, and a flow rate detecting mechanism 700.

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.

3 and 4, the rotating shaft 200 is a means for transmitting the rotational driving force of the external driving source to the inside of the compressor. The rotating shaft 200 penetrates a central portion of the front head 120, And is rotatably mounted. A rotary pulley 140 is coupled to one end of a rotary shaft 200 exposed to the outside of the front head 120 and an external rotary driving force is transmitted to the rotary shaft 200 through the rotary 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 in the circumferential direction of the swash plate 300, and the plurality of pistons 400 are slidably supported by the shoe 310 through the shoe 310.

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 adjustment of the inclination angle of the swash plate 300 is performed by a pressure control valve (not shown) provided at one side of the rear housing 130 so as to adjust the opening degree of the oil passage (not shown) communicating with the discharge chamber 134 and the crank chamber 121 Time).

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, And discharges the refrigerant sucked into the cylinder bore 111 through the discharge port 131 to the discharge chamber 134 of the rear head 130.

On the other hand, the refrigerant discharged to the discharge chamber 134 is discharged to an external refrigerant line through a discharge port (not shown) via a discharge passage 137 formed at one side of the discharge chamber 134.

The discharge check valve 500 is installed in the discharge chamber 134 where the refrigerant compressed in the cylinder bore 111 is discharged to adjust the refrigerant discharge amount and the suction check valve 600 is connected to the suction port 131 And is installed on the pipeline 135 connected to the suction chamber 132 to adjust the refrigerant suction amount.

Since the opening degree of the discharge check valve 500 or the suction check valve 600 changes according to the inclination angle of the swash plate 300, the opening degree of the discharge check valve 500 or the suction check valve 600 is detected The inclination angle of the swash plate 300, that is, the torque of the compressor can be calculated.

To this end, a dam body 710 that moves in conjunction with the operation of the discharge check valve 500 or the suction check valve 600 and a sensor 720 that detects the proximity or separation of the dam body 710 And the suction check valve 600 may be formed in the same structure as the discharge check valve 500 to be described later and interlocked with the flow rate detecting mechanism 700, The description will be limited to the discharge check valve 500 in describing the first embodiment of the invention and the second and third embodiments to be described later.

The sensor 720 detects movement of the sensing element 710. For example, the sensing element 710 may be made of a magnetic material, and the sensor 720 may sense the movement of the sensing element 710, And a magnetic sensor for detecting a varying magnetic flux density.

5, the discharge check valve 500 includes a suction port 511 formed at one side thereof and a discharge port 511 communicating with the suction port 511 at the other side thereof. And a guide hole 514 formed on one side of the case 510. The case 510 is supported on the inside of the case 510 via a spring S so that the air is discharged from the air inlet 511 to the discharge port 511. [ (520) which is located inside the opening / closing core (520) and penetrates through a guide hole (514) of the case (510) to control the flow of the refrigerant leading to the opening / closing core And a connecting rod 530 which moves integrally. At this time, the sensing element 710 is installed on one side of the connecting rod 530 protruding outside the case 510, and moves together with the opening / closing core 520.

Here, the case 510 is formed of a hollow cylinder such as a cylinder, and the right end side in the figure is formed in a shape that is closed except for the guide hole 514, and is opened toward the cylinder bore 111 A cover 513 is placed on the upper left end side. A suction port 511 is passed through the center of the lid 513. Therefore, when the suction port 511 is opened, the refrigerant introduced into the discharge chamber 134 from the cylinder bore 111 enters the inside of the case 510 through the suction port 511. A discharge port 512 communicating with the suction port 511 is formed through the side surface of the case 510.

The opening and closing core 520 is a means for interrupting the flow of the refrigerant passing through the inside of the case 510 so as to control the flow of the refrigerant from the inlet 511 of the case 510 to the outlet 512 And moves reciprocally in the axial direction A in accordance with the pressure difference between the pressure of the refrigerant flowing through the suction port 511 of the case 510 (also the pressure of the cylinder bore 111) and the pressure of the discharge chamber 134, 510) and the discharge port (512).

When the opening / closing core 520 is reciprocated in the axial direction A, the connecting rod 530 is integrated with the opening / closing core 520, Closing core 520 and the damping agent 710 so as to move in the direction A, and is formed in a solid rod shape such as a circular bar.

In the variable capacity swash plate type compressor according to the first embodiment of the present invention, as the sensing body 710 moves, the variation value of the magnetic flux density measured by the sensor 720 is smaller than that of the rear head 130 The control unit calculates the discharge amount of the refrigerant and the torque of the compressor based on the measured value, and controls the pressure regulating valve. The controller controls the engine control unit (not shown) So that the engine speed is controlled optimally.

Hereinafter, a variable displacement swash plate type compressor according to a second embodiment of the present invention will be described with reference to FIG. 6, in part, with reference to FIGS. 3 and 4 described above.

The variable displacement swash plate type compressor according to the second embodiment of the present invention is similar to the variable displacement swash plate type compressor according to the first embodiment described above except that the structure of the discharge check valve 500, There is a difference in the interlocking structure of the core 520 and the sensing element 710.

Therefore, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and duplicate descriptions of the components already described in the first embodiment of the present invention will be omitted.

5, in the variable capacity swash plate type compressor according to the second embodiment of the present invention, the discharge check valve 500 has a suction port 511 formed at one side thereof and a suction port 511 formed at the other side thereof, And a discharge port 512 communicating with the discharge port 512. The case 510 'includes a case 510' through which a discharge port 512 communicating with the discharge port 512 communicates with the discharge port 512, And an opening / closing core 520 for regulating the flow. At this time, the sensing element 710 is located at one side of the opening / closing core 520 from the inside of the case 510 'and is supported inside the case 510' via the auxiliary spring S2, And is connected to the opening / closing core 520 through the main spring S1.

In the variable capacity swash plate type compressor according to the second embodiment of the present invention as described above, the main spring S1 and the main spring S1 are provided so that the sensing element 710 does not fall too far from the sensor 720, The auxiliary spring S2 is used and the elastic modulus of the main spring S1 is adjusted by the auxiliary spring S2 so that the sensing element 710 is moved toward or away from the sensor 720 in accordance with the movement of the opening / Is preferably equal to or greater than the elastic modulus of the elastic member (S2).

That is, when the inclination angle of the swash plate 300 is minimum, the opening / closing core 520 moves in the direction of the sensor 720. At this time, the compressive deformation of the auxiliary spring S2 advances first, Direction.

As described above, when the sensing element 710 is elastically supported apart from the opening / closing core 520 by the main spring S1 and the auxiliary spring S2, the moving distance of the sensing element 710, as compared with the first embodiment, And the output of the sensor 720 is increased, so that the stability of the output can be obtained. Even when the flow rate of the refrigerant is small, the flow rate of the refrigerant can be effectively detected.

Hereinafter, a variable displacement swash plate type compressor according to a third embodiment of the present invention will be described with reference to FIG. 7, in part, with reference to FIGS. 3 and 4 described above.

The variable displacement swash plate type compressor according to the third embodiment of the present invention is similar to the variable displacement swash plate type compressor according to the first embodiment described above except that the structure of the discharge check valve 500, There is a difference in the interlocking structure of the core 520 and the sensing element 710.

Therefore, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and duplicate descriptions of the components already described in the first embodiment of the present invention will be omitted.

7, in the variable capacity swash plate type compressor according to the third embodiment of the present invention, the discharge check valve 500 has a suction port 511 formed at one side thereof and a suction port 511 formed at the other side thereof, A main partition 510a having a guide hole 514 formed at one side thereof and an auxiliary partition 510b formed at one side of the main partition 510a, And a first spring S11 disposed on the inside of the main partition 510a to control the flow of refrigerant from the suction port 511 to the discharge port 512. The case 510 ' A connecting rod 530 located inside the opening and closing core 520 and passing through the guide hole 514 of the main partition 510a and moving integrally with the opening and closing core 520; , And a support play (530) disposed at one side of the connecting rod (530) It comprises 540. The sensing element 710 is located in the auxiliary partition 510b and is supported by the second spring S12 on the inner side of the auxiliary partition 510b. The support plate 540 and the third spring S13.

In the case of the variable capacity swash plate type compressor according to the third embodiment of the present invention, as in the case of the second embodiment of the present invention, the sensing body 710 is connected to the sensor 720 The first spring S11, the second spring S12 and the third spring S13 are used so that the opening and closing core 520 and the support plate 540 are not moved too far It is preferable that the elastic modulus of the third spring S13 is greater than or equal to the elastic modulus of the second spring S12 so that the sensing element 710 approaches or moves away from the sensor 720. [

That is, when the inclination angle of the swash plate 300 is the minimum, the opening / closing core 520 and the support plate 540 move in the direction of the sensor 720. At this time, the compressive deformation of the second spring S12 progresses first, 710 move in the direction of the sensor 720.

In this state, the sensing member 710 is separated from the opening / closing core 520 by the second spring S12 and the third spring S13, and the connecting rod 530 and the supporting plate 540 are further interposed therebetween The moving distance of the sensing element 710 is further reduced compared with the second embodiment as described above and the output of the sensor 720 becomes larger and the stability of the output can be achieved And the refrigerant flow rate can be more effectively detected even when the flow rate of the refrigerant is small. By providing the auxiliary compartment 510b in the case 510 '', the damping effect against the pressure when the opening / closing core 520 and the support plate 540 move in the axial direction A appears so that the sensing element 710 Can be prevented, and wear of the case 510 " can be alleviated.

According to the variable capacity swash plate type compressor according to the above-described embodiment of the present invention, a sensing member that operates in conjunction with a discharge check valve or a suction check valve is provided, and a sensor for sensing a change in the magnetic flux density of the sensing member, It is possible to prevent the phenomenon of the flow rate decrease and to maintain the accuracy of the measured value even at a low flow rate.

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: crank chamber
130: rear head 131: suction port
132: suction chamber 135: channel
136: passage 200: rotating shaft
300: swash plate 400: piston
500: discharge check valve 520: opening / closing core
600: suction check valve 700: flow rate detection mechanism
710: Detector 720: Sensor

Claims (7)

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 through one side of the housing 100;
A swash plate 300 mounted on the rotary shaft 200 and integrally rotated with the rotary shaft 200 so as to be able to vary the angle with respect to the rotary shaft 200 so that the refrigerant discharge amount 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 check valve 500 provided in the discharge chamber 134 or the operation of the suction check valve 600 installed on the pipeline 135 connecting the suction port 131 to the suction chamber 132 And a sensor 720 installed on one side of the rear head 130 so as to face the sensing body 710 and sensing proximity or spacing of the sensing body 710 And a flow rate detecting mechanism (700)
The discharge check valve (500) or the suction check valve (600)
A case 510 having a suction port 511 formed on one side thereof and a discharge port 512 communicating with the suction port 511 formed on the other side thereof and a guide hole 514 formed on the other side thereof;
An opening and closing core 520 which is supported on the inside of the case 510 via a spring S and regulates the flow of refrigerant from the inlet 511 to the outlet 512;
And a connecting rod 530 located inside the opening and closing core 520 and penetrating the guide hole 514 of the case 510 to move integrally with the opening and closing core 520,
Wherein the sensing body (710) is installed at one side of the connecting rod (530) protruding out of the case (510).
The method according to claim 1,
Wherein the sensing body (710) is made of a magnetic material, and the sensor (720) is a magnetic sensor for detecting a change in magnetic flux density of the sensing body (710). delete 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 through one side of the housing 100;
A swash plate 300 mounted on the rotary shaft 200 and integrally rotated with the rotary shaft 200 so as to be able to vary the angle with respect to the rotary shaft 200 so that the refrigerant discharge amount 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 check valve 500 provided in the discharge chamber 134 or the operation of the suction check valve 600 installed on the pipeline 135 connecting the suction port 131 to the suction chamber 132 And a sensor 720 installed on one side of the rear head 130 so as to face the sensing body 710 and sensing proximity or spacing of the sensing body 710 And a flow rate detecting mechanism (700)
The discharge check valve (500) or the suction check valve (600)
A case 510 'having a suction port 511 formed on one side thereof and a discharge port 512 communicating with the suction port 511 on the other side thereof;
And an opening and closing core 520 movably installed inside the case 510 'for controlling the flow of refrigerant from the inlet 511 to the outlet 512,
The sensing element 710 is positioned at one side of the opening / closing core 520 from the inside of the case 510 'and is supported inside the case 510' via an auxiliary spring S2, Is connected to the core (520) via a main spring (S1).
The method of claim 4,
Wherein the elastic modulus of the main spring (S1) is greater than or equal to the elastic modulus of the auxiliary spring (S2). 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 through one side of the housing 100;
A swash plate 300 mounted on the rotary shaft 200 and integrally rotated with the rotary shaft 200 so as to be able to vary the angle with respect to the rotary shaft 200 so that the refrigerant discharge amount 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 check valve 500 provided in the discharge chamber 134 or the operation of the suction check valve 600 installed on the pipeline 135 connecting the suction port 131 to the suction chamber 132 And a sensor 720 installed on one side of the rear head 130 so as to face the sensing body 710 and sensing proximity or spacing of the sensing body 710 And a flow rate detecting mechanism (700)
The discharge check valve (500) or the suction check valve (600)
A main compartment 510a through which a suction port 511 is formed at one side and a discharge port 512 communicating with the suction port 511 is formed at the other side and a guide hole 514 is formed at another side, A case 510 " comprising an auxiliary compartment 510b formed at one side of the main compartment 510a;
An opening and closing core 520 which is supported on the inside of the main partition 510a through a first spring S11 to adjust the flow of refrigerant from the inlet 511 to the outlet 512, A connecting rod 530 located inside the main partition 520 and passing through the guide hole 514 of the main division room 510a to move integrally with the opening / closing core 520;
And a support plate 540 disposed in the auxiliary partition 510b and installed at one side of the connecting rod 530,
The sensing element 710 is located in the auxiliary partition 510b and is supported by the second spring S12 on the inner side of the auxiliary partition 510b and the support plate 540 and the third spring S13, Wherein the compressor is connected to the compressor through an intermediate space. The method of claim 6,
Wherein an elastic modulus of the third spring (S13) is greater than or equal to an elastic modulus of the second spring (S12).

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