KR880004230A - SWASH-PLATE TYPE Compressor with Variable Exhaust Capacity - Google Patents

Abstract

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Description

SWASH-PLATETYPE compressors with variable displacement

Since this is an open matter, no full text was included.

1 is an axial sectional view of a swash plate type compressor according to the present invention.

2 is a cross-sectional view taken along the line II-II of FIG.

3 is an exploded perspective view of the main part of the compressor of FIG.

4 is a circuit diagram of a solenoid valve coupled in the compressor of FIG.

5 is an illustration of the forces acting on the piston, swashplate and spool in the compressor of FIG.

* Explanation of symbols for main parts of the drawings

10: swash plate 22: exhaust valve

24: exhaust valve 30: spool

40: rear shaft 50: front operation chamber

60: rear operation chamber 71, 73: suction passage

72, 74: suction chamber 90, 93: exhaust chamber

92, 95: exhaust port 98: control pressure passage

Claims (28)

A swash plate type compressor having a variable displacement, comprising: a cylinder block having a plurality of cylinder bores, a shaft rotatably supported within the cylinder block, a swash inclined to the shaft and rotated with the shaft; On the surface of the cylinder bore formed between the plate and a piston which is slidably received in the cylinder bore, the piston being reciprocated in the cylinder bore according to the oscillating movement of the swash plate, and connected to both ends of each piston. Adjacent operating chambers, coaxially disposed with the shaft and supporting a central portion of the swashplate in a rotatable and inclined manner; and driving the support of the shaft axially to move the swashplate of the shaft in an axial direction. Consisting of one spool, the cylinder bore Swashplate type compressors with variable displacements in which the stroke of the reciprocating motion of the stone is changed in such a way that the piston acts on the one side of each piston so that the piston is always stroked to a predetermined position regardless of the change of the inclination angle of the swashplate. . 2. The swashplate type compressor of claim 1, wherein the support portion has a spherical support surface rotatably and slidably coupled to a spherical surface portion formed on the central portion of the swash plate. The swashplate type compressor of claim 1, wherein the shaft extends through the swashplate and has a variable displacement such that the spool is slidably mounted on the shaft. The swashplate type compressor of claim 1, wherein the shaft has a variable displacement such that the shaft is disposed only on one side of the swashplate. The swash plate is inclined to the shaft by engagement between the flat web portion and the slit, as the shaft has a flat web portion and at the same time causes the swash plate to form a slit to receive the flat web portion. Swashplate compressor with variable displacement. 6. The flat plate portion of claim 5, wherein the flat web portion has a slit, and pin receiving holes are formed in portions of the swash plate forming the slit, so that the swash plate extends through the slot and is received in the pin receiving hole. Swashplate type compressor with variable displacement allowing pins to be inclined to the shaft. 6. The pin according to claim 5, wherein the flat web portion has a pin receiving hole, and at the same time, the portions of the swash plate forming the slit have a slot so that the swash plate extends through the slot to accommodate the pin receiving hole. And a swashplate type compressor having a variable displacement that is connected to the shaft by means of this. 8. The swashplate type compressor of claim 7, wherein the pin has a variable displacement such that the pin passes through the bearing and is rotatably supported in the pin receiving hole. 2. The swash according to claim 1, wherein when the reciprocating stroke of the piston in the cylinder bore changes with a change in the inclination angle of the swashplate, the top dead center of each piston is located in the angular dynamic chamber on one side of the piston. A swashplate type compressor having a variable displacement so as not to be formed in the operating chamber irrespective of the change of the inclination angle of the plate. A swashplate type compressor having a variable displacement, comprising: a cylinder block having at least one cylinder bore therein, a shaft rotatably supported within the cylinder block, inclinedly connected to the shaft, together with the shaft A swash plate to be rotated, a piston slidably housed in the cylinder bore and reciprocating stroke operation in the cylinder bore in accordance with the oscillating movement of the swash plate, both ends of the angular piston and the associated cylinder bore An operating chamber formed between adjacent surfaces, a support part coaxially disposed with the shaft and rotatably and inclinedly supporting the central portion of the swash plate, a spool for axially driving the support part of the shaft, and against the support part Formed on one side of the spool, the spool having its interior The control pressure chamber allows the shaft to move in the axial direction according to the pressure, and the control valves in which any one of the suction pressure of the compressor and the exhaust pressure of the compressor are selectively introduced into the control pressure chamber. When guided by the control valve into the control pressure chamber, the internal pressure of the control pressure chamber generates a force that causes the spool to move the support in the direction of increasing the inclination angle of the swash plate, and the suction pressure is applied to the control valve. When guided in, the support and the spool are moved in a direction to reduce the inclination angle of the swashplate by the compressive reaction force acting on the piston, and the inclination angle of the swashplate on each side of the piston in each actuating chamber. With a variable displacement that allows the stroke to reach the desired position regardless of Plate type compressor. 11. The swashplate type compressor of claim 10, having a variable displacement such that a plurality of cylinder bores are formed in the cylinder block and extend parallel to each other. 12. The control valve according to claim 10, wherein the control valve further comprises a control pressure passage communicating with the control pressure chamber, a high pressure induction passage leading to a pressure available on the exhaust side of the compressor, and a pressure usable on the suction side of the compressor. A swash plate type compressor having a variable displacement, which consists of switching valves for selectively communicating one of the low pressure induction passage and the high pressure and low pressure induction passage with the control pressure passage. 12. The low pressure induction according to claim 10, wherein the adjustment pressure chamber is in communication with the exhaust side of the compressor by flow resistance means, and the control valve is in communication with the adjustment pressure chamber, and the low pressure induction inducing a pressure available at the suction side of the compressor. A swash plate type compressor having a variable displacement with passages and valve members for selectively connecting the low pressure induction passages to and from the control pressure chambers. A swashplate type compressor having a variable displacement, comprising: a cylinder block having a cylinder bore therein, a shaft rotatably supported within the cylinder block, inclinedly connected to the shaft, and rotating together with the shaft; A swash plate, a piston slidably accommodated in the cylinder bore and reciprocating in the cylinder bore according to the oscillating motion of the swash plate, an operating chamber formed between both ends of each piston and an adjacent surface of the cylinder, A support part coaxially disposed with the shaft and rotatably and vibratingly supporting a central portion of the swash plate, a spool for axially driving the support part with respect to the shaft, and a maximum displacement with a maximum inclination angle of the spool Between the position and the minimum displacement position with the minimum inclination angle of the swashplate Control means for driving the spool in the axial direction, and the control means drives the spool more than a predetermined distance from the position of the minimum exhaust amount, and is operated when a load is applied to the spool to suppress the movement of the spool toward the maximum exhaust position. And a swashplate type compressor having a variable displacement such that the movement of the spool causes an axial displacement of the center of the swashplate with respect to the shaft, and the inclination angle of the swashplate is varied. 15. A swashplate type compressor according to claim 14, wherein the auxiliary load means has a variable displacement such that the auxiliary load means are made of spring means. 16. The swashplate type compressor of claim 15, wherein the spring means is disposed between the spool and one end of the shaft such that compression of the spring means is initiated when the spool is moved over a predetermined distance. 16. The swashplate type compressor of claim 15, wherein the spring means is disposed between the spool and the cylinder block so that the load by the spring means acts when the spool moves beyond the predetermined distance. 16. An elastic load when the spool is moved beyond a predetermined distance by securing an end plate fixed to one end of the cylinder block and covering the operation chamber, and having a spring means disposed between the spool and the end plate. A swashplate type compressor having a variable displacement that causes it to act. 16. The swashplate according to claim 15, wherein the spring means is disposed between the support and the retainer mounted on the shaft so as to face the support, and the swash plate having a variable displacement which effectively generates an elastic load when the support is moved beyond a predetermined distance. Type compressor. A swash plate type compressor having a variable displacement, comprising: a cylinder block having a cylinder bore therein, a shaft rotatably supported in the cylinder block, a swash plate inclined to the shaft and rotated together with the shaft; A piston slidably housed in the cylinder block and reciprocating in the cylinder bore according to the oscillating movement of the swash plate, an actuating chamber formed between both ends of each piston and the adjacent surface of the cylinder bore, and coaxially with the shaft. A support portion rotatably supporting the central portion of the swash plate rotatably, a spool for axially driving the support portion with respect to the shaft, and a spool moving axially with respect to the shaft, Inclination angle of the swash plate while moving the core in the axial direction By varying, the position of the stroke end of each piston in the first actuating chamber on which the reciprocating stroke of the piston in the cylinder bore is different from the stroke end position of each piston in the second actuating chamber on the other end of the piston The control means for changing in this manner and the auxiliary bias means for generating a torque applied in the direction of reducing the inclination angle of the swash plate by applying a biasing force acting from the first actuating chamber toward the second actuating chamber. Swashplate compressor with variable displacement. 21. The swashplate type compressor of claim 20, wherein the auxiliary bias means is made of a spring for applying a load to the spool in a direction of reducing the amount of movement of the spool toward the support. 22. The swashplate type compressor of claim 21, wherein the spring has a variable displacement such that the spring contacts the spool at one end thereof and the other end contacts the shaft. The swash plate type compressor of claim 20, wherein the auxiliary biasing means comprises a pressurizing passage means for inducing the exhaust pressure of the compressor into the operation chamber. 24. The apparatus of claim 23, wherein the auxiliary biasing means comprises a communication means for communicating between the first operating chamber and the exhaust chamber, such that the exhaust chamber has a variable displacement which causes the exhaust chamber to communicate with the second chamber by the exhaust port and the exhaust valve. Shep plate type compressor. 25. A cylinder according to claim 24, comprising a side plate on one end surface of the cylinder block, the side plate having an exhaust port for communicating the first operating chamber and the second operating chamber with the exhaust chamber, the communicating means being the side plate. Swashplate compressors with variable displacement configured to form 25. A swashplate type compressor as recited in claim 24, wherein the communicating means is comprised of relief ports formed in the exhaust valves. 21. The variable exhaust amount according to claim 20, wherein the auxiliary housing means is constituted by a dead volume forming means for changing the position of the stroke end of the piston in the second actuating chamber to form a dead volume on the end of the piston in the second actuating chamber. Swashplate type compressor. 28. The apparatus of claim 27, further comprising: a flat web portion formed on the shaft, and a slit formed on the swash plate and receiving the web portion; A slot formed in the web portion, a pin accommodation hole formed in the portions of the swash plate forming the slot, a pin extending through the slot and accommodated in the pin accommodation hole to inclinedly connect the swash plate to the shaft; A swashplate type compressor having a variable displacement such that when the inclination angle of the shee plate decreases with the movement of the spool, the dead volume consists of slots constructed to form the second operating chamber. ※ Note: The disclosure is based on the initial application.