US20020040638A1 - Swash plate compressor having variable capacity - Google Patents
Swash plate compressor having variable capacity Download PDFInfo
- Publication number
- US20020040638A1 US20020040638A1 US09/973,900 US97390001A US2002040638A1 US 20020040638 A1 US20020040638 A1 US 20020040638A1 US 97390001 A US97390001 A US 97390001A US 2002040638 A1 US2002040638 A1 US 2002040638A1
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- United States
- Prior art keywords
- drive shaft
- swash plate
- hub
- coupled
- unit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B25/00—Multi-stage pumps
- F04B25/04—Multi-stage pumps having cylinders coaxial with, or parallel or inclined to, main shaft axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/1054—Actuating elements
- F04B27/1072—Pivot mechanisms
Definitions
- the present invention relates to a swash plate compressor having variable capacity used in an air conditioner for car.
- a compressor used in an air conditioner for a car pumps a heat exchange medium by sucking the heat exchange medium vaporized in a vaporizer, compressing the sucked heat exchange medium, and discharging the compressed heat exchange medium.
- the compressors are classified into various types such as a swash plate type, a scroll type, a rotary type, and a wobble plate type according to a compressing method and a driving method. These compressors have fixed capacities. Since a pumping capacity of each compressor cannot be changed according to load in cooling when the compressor is used in an air conditioner for a car which is driven by an engine, the load according to driving of the compressor increases.
- a compressor having variable discharge capacity according to load in cooling in an air conditioner for a car is shown in FIG. 1.
- a swash plate type compressor having variable capacity includes a cylinder 12 having a plurality of bores 11 , a front housing 13 in which the cylinder 12 is installed and forming a crank chamber, a drive shaft 16 rotatably supported by the front housing 13 and the cylinder 12 , a rotor 17 or a lug plate installed at the drive shaft 16 and rotating together with the drive shaft 16 , and a swash plate 18 .
- the swash plate 18 is installed at the drive shaft 16 to be capable of pivoting and sliding.
- the rotor 17 and the swash plate 18 are connected by a hinge unit 20 .
- the hinge unit 20 includes a first arm 21 extending from the rotor 17 toward the swash plate 18 and a second arm 22 extending from the swash plate 18 toward the first arm 21 .
- a slot 21 a is formed in the first arm 21 and a hinge pin 22 a to be coupled to the slot 21 a is formed at the second arm 22 .
- a piston 19 is installed at each of the bores 11 of the cylinder 12 .
- the piston 19 is coupled to the swash plate 18 by shoes 19 a each having a hemispheric shape.
- a spherical sleeve 18 a is supported by the drive shaft 16 to be capable of sliding.
- the sleeve 18 a is coupled by a pin 18 c to a boss 18 b at which the swash plate 18 is supported.
- Japanese Patent Publication No. 6-307333 discloses a swash plate type compressor having variable capacity, in which a cam hole is formed in a drive shaft.
- a swash plate is supported to be capable of pivoting by a main shaft pin guided by the cam hole and simultaneously sliding in an axial direction.
- Japanese Patent Publication No. 8-14157 discloses another swash plate type compressor having variable capacity.
- This swash plate type compressor having variable capacity includes a rotation shaft capable of rotating, a slide member arranged at the outer circumference of the rotation shaft and supported to be capable of sliding along an axial direction of the rotation shaft, an actuator portion for moving the slide member along the axial direction, a piston capable of reciprocating, a swash plate arranged to be coupled to the slide member and the piston, and a coupling portion for coupling the slide member and the swash plate and controlling an angle of inclination of the swash plate with respect to the slide member according to the amount of displacement of the slide member.
- the coupling portion includes a support pin portion penetrating the rotation shaft and the slide member, and a slot having a grooved bottom installed at the swash plate and receiving the support pin member, so that the rotation shaft can move the support pin member in the axial direction.
- a swash plate type compressor having variable capacity comprising a housing unit having a cylinder block where a plurality of bores are formed and forming a crank chamber, a suction chamber, and a discharge chamber, a drive shaft rotatably installed by the housing unit, a piston installed at each of the bores of the cylinder to be capable of sliding, a rotor disposed at the crank chamber and installed at the drive shaft, and rotating together with the drive shaft, a swash plate coupled to the rotor by a hinge unit for reciprocating the piston and having a hub coupled to the drive shaft, and a pivot unit for limiting pivot of the swash plate as a slot formed in the drive shaft in the axial direction and the hub of the swash plate are directly pin-coupled.
- first and second flat portions are formed at both sides of the drive shaft in a direction perpendicular to the slot of the drive shaft, and third and fourth flat portions are formed at an inner surface of the hub corresponding
- the slot is long enough not to be interfered during pivot of the swash plate.
- a swash plate type compressor having variable capacity comprising a housing unit having a cylinder block where a plurality of bores are formed and forming a crank chamber, a suction chamber, and a discharge chamber, a drive shaft rotatably installed by the housing unit, a piston installed at each of the bores of the cylinder to be capable of sliding, a rotor disposed at the crank chamber and installed at the drive shaft, and rotating together with the drive shaft, a swash plate coupled to the rotor by a hinge unit for reciprocating the piston and having a hub coupled to the drive shaft, and a pivot unit for limiting a range of movement of the swash plate with respect to the drive shaft without change in the center of rotation of the swash plate as the center of rotation of the swash plate moves along a central axis of the drive shaft.
- FIG. 1 is a sectional view of a conventional swash plate type compressor having variable capacity
- FIG. 2 is a sectional view showing a state in which the swash plate is coupled to the drive shaft of FIG. 1
- FIG. 3 is a sectional view of a swash plate type compressor having variable capacity according to the present invention.
- FIG. 4 is a perspective view showing a state in which the drive shaft, the rotator, and the swash plate according to the present invention are coupled;
- FIG. 5 is an exploded perspective view showing a state in which the drive shaft, the rotator, and the swash plate according to the present invention are coupled.
- FIG. 6 is a front view showing a state in which the rotation shaft and the hub of the swash plate are coupled.
- FIGS. 3 through 6 show a swash plate type compressor having variable capacity according to a preferred embodiment of the present invention.
- the swash plate type compressor having variable capacity according to the present invention includes a cylinder 23 where a plurality of bores 22 to which pistons 21 are coupled to be capable of sliding are installed, and front and rear housings 24 and 25 forming a crank chamber 24 a and a suction and discharge chamber and having the cylinder 23 installed therein.
- a drive shaft 26 is rotatably installed at the front housing 24 and the cylinder 23 .
- a valve assembly 60 having valves for controlling sucking and discharging of a heat exchange medium according to reciprocation of the pistons 21 is installed at a boundary between the cylinder 23 and the rear housing 25 .
- the rotor 27 is fixed to the drive shaft 26 and rotates together with the drive shaft 26 .
- the rotor 27 is coupled to a hub 29 by a hinge unit 30 and the hub 29 is coupled to the swash plate 28 .
- the hub 29 is coupled to the drive shaft 26 by a pivot unit 40 so that the hub 29 can nutate.
- the hub 29 and the swash plate 28 can be formed integrally.
- the hinge unit 30 includes a first arm 31 extending from the rotor 27 toward the hub 29 , a second arm 32 extending from the hub 29 toward the first arm 31 , and a hinge pin 33 for hinge-coupling end portions of the first and second arms 31 and 32 .
- a guide portion 31 a along with the hinge pin 33 moves is formed at the first arm 31 to absorb a relative transfer of the second arm 32 with respect to the first arm 31 during pivot.
- the hinge pin 33 is installed at the first arm and the guide portion 31 a may be formed at the second arm 32 .
- the pivot unit 40 fixes the center of rotation by limiting a range of movement of the swash plate 28 with respect to the drive shaft 26 without movement of the center of rotation of the swash plate 28 .
- a preferred embodiment of the pivot unit 40 is shown in FIGS. 4 through 6.
- first and second flat portions 41 and 42 are formed at both corresponding side surfaces of the drive shaft 26 .
- a slot 43 is formed in portions where the first and second flat portions 41 and 42 in an axial direction of the drive shaft 26 .
- the portion of the drive shaft 26 where the slot 43 is formed is preferably formed such that a diameter in a direction perpendicular to the slot 43 (a diameter in a vertical direction) is formed to be relatively greater than a diameter in a horizontal direction so as to obtain a sufficient mechanical strength.
- Third and fourth flat portions 43 and 44 corresponding to the first and second flat portions 41 and 42 are formed on the inner surfaces of a shaft coupling portion 29 a formed at the center of the hub 29 .
- a pin coupling hole 29 b is formed in the shaft coupling portion 29 a .
- the shaft coupling portion 29 a is coupled to the drive shaft 26 by a pin 45 inserted into the pin coupling hole 29 b while penetrating the slot 43 .
- the pivot unit 40 is not limited to the above-described preferred embodiment, and any structure which can pin-couple the shaft and the shaft coupling portion without an additional member may be adopted.
- Reference numeral 70 denotes a pressure adjustment unit for controlling an angle of inclination of the swash plate by changing the pressure in the crank chamber by using the pressure of the discharge chamber.
- first and second flat portions 41 and 42 are formed at a portion of the drive shaft 26 where the slot 43 is formed and the third and fourth flat portions 43 and 44 are formed at the inner surface of the shaft coupling portion 29 a of the hub 29 , when rotational torque of the drive shaft 26 is transferred to the hub 29 , twist moment applied to the pin 34 can be minimized.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
A swash plate type compressor having variable capacity includes a housing unit having a cylinder block where a plurality of bores are formed and forming a crank chamber, a suction chamber, and a discharge chamber, a drive shaft rotatably installed by the housing unit, a piston installed at each of the bores of the cylinder to be capable of sliding, a rotor disposed at the crank chamber and installed at the drive shaft, and rotating together with the drive shaft, a swash plate coupled to the rotor by a hinge unit for reciprocating the piston and having a hub coupled to the drive shaft, and a pivot unit for limiting pivot of the swash plate as a slot formed in the drive shaft in the axial direction and the hub of the swash plate are directly pin-coupled. In the compressor, first and second flat portions are formed at both sides of the drive shaft in a direction perpendicular to the slot of the drive shaft, and third and fourth flat portions are formed at an inner surface of the hub corresponding to the first and second flat portions.
Description
- 1. Field of the Invention
- The present invention relates to a swash plate compressor having variable capacity used in an air conditioner for car.
- 2. Description of the Related Art
- In general, a compressor used in an air conditioner for a car pumps a heat exchange medium by sucking the heat exchange medium vaporized in a vaporizer, compressing the sucked heat exchange medium, and discharging the compressed heat exchange medium.
- The compressors are classified into various types such as a swash plate type, a scroll type, a rotary type, and a wobble plate type according to a compressing method and a driving method. These compressors have fixed capacities. Since a pumping capacity of each compressor cannot be changed according to load in cooling when the compressor is used in an air conditioner for a car which is driven by an engine, the load according to driving of the compressor increases.
- To solve the above problem, a compressor having variable discharge capacity according to load in cooling in an air conditioner for a car is shown in FIG. 1. As shown in the drawing, a swash plate type compressor having variable capacity includes a
cylinder 12 having a plurality ofbores 11, afront housing 13 in which thecylinder 12 is installed and forming a crank chamber, adrive shaft 16 rotatably supported by thefront housing 13 and thecylinder 12, arotor 17 or a lug plate installed at thedrive shaft 16 and rotating together with thedrive shaft 16, and aswash plate 18. - The
swash plate 18 is installed at thedrive shaft 16 to be capable of pivoting and sliding. Therotor 17 and theswash plate 18 are connected by ahinge unit 20. Thehinge unit 20 includes afirst arm 21 extending from therotor 17 toward theswash plate 18 and asecond arm 22 extending from theswash plate 18 toward thefirst arm 21. Aslot 21 a is formed in thefirst arm 21 and a hinge pin 22 a to be coupled to theslot 21 a is formed at thesecond arm 22. Apiston 19 is installed at each of thebores 11 of thecylinder 12. Thepiston 19 is coupled to theswash plate 18 byshoes 19 a each having a hemispheric shape. - Here, the mechanism of supporting of the
swash plate 18 capable of sliding with respect to thedrive shaft 16 is disclosed in European Patent Application No. EP 0911523 A2. As shown in FIG. 2, aspherical sleeve 18 a is supported by thedrive shaft 16 to be capable of sliding. Thesleeve 18 a is coupled by apin 18 c to aboss 18 b at which theswash plate 18 is supported. - Since an additional
spherical sleeve 18 a is needed to support theswash plate 18 at thedrive shaft 16 as above, a manufacturing cost increases. Also, in assembly, since thesleeve 18 a, theboss 18 b of theswash plate 18, and thepin 18 c are simultaneously coupled, many work steps are needed so that productivity is lowered. - Japanese Patent Publication No. 6-307333 discloses a swash plate type compressor having variable capacity, in which a cam hole is formed in a drive shaft. A swash plate is supported to be capable of pivoting by a main shaft pin guided by the cam hole and simultaneously sliding in an axial direction.
- Also, Japanese Patent Publication No. 8-14157 discloses another swash plate type compressor having variable capacity. This swash plate type compressor having variable capacity includes a rotation shaft capable of rotating, a slide member arranged at the outer circumference of the rotation shaft and supported to be capable of sliding along an axial direction of the rotation shaft, an actuator portion for moving the slide member along the axial direction, a piston capable of reciprocating, a swash plate arranged to be coupled to the slide member and the piston, and a coupling portion for coupling the slide member and the swash plate and controlling an angle of inclination of the swash plate with respect to the slide member according to the amount of displacement of the slide member. The coupling portion includes a support pin portion penetrating the rotation shaft and the slide member, and a slot having a grooved bottom installed at the swash plate and receiving the support pin member, so that the rotation shaft can move the support pin member in the axial direction.
- In the above-described conventional compressors having variable capacities, since an additional sleeve must be installed at the rotation shaft, the structure of the compressor is complicated. In particular, when the cam hole for guiding the swash plate is formed in the rotation shaft, as the swash plate pivots by being guided by the cam hole, the center of pivot moves so that vibration is generated.
- To solve the above-described problems, it is an object of the present invention to provide a swash plate type compressor having variable capacity in which a swash plate and a drive shaft are simply coupled by a rotation pin and a hinge unit and productivity is improved by reducing the number of work steps in assembly.
- It is another object of the present invention to provide a swash plate type compressor having variable capacity in which a rotational force of the drive shaft is stably transferred to the swash plate.
- To achieve the above objects, there is provided a swash plate type compressor having variable capacity comprising a housing unit having a cylinder block where a plurality of bores are formed and forming a crank chamber, a suction chamber, and a discharge chamber, a drive shaft rotatably installed by the housing unit, a piston installed at each of the bores of the cylinder to be capable of sliding, a rotor disposed at the crank chamber and installed at the drive shaft, and rotating together with the drive shaft, a swash plate coupled to the rotor by a hinge unit for reciprocating the piston and having a hub coupled to the drive shaft, and a pivot unit for limiting pivot of the swash plate as a slot formed in the drive shaft in the axial direction and the hub of the swash plate are directly pin-coupled. In the compressor, first and second flat portions are formed at both sides of the drive shaft in a direction perpendicular to the slot of the drive shaft, and third and fourth flat portions are formed at an inner surface of the hub corresponding to the first and second flat portions.
- It is preferred in the present invention that the slot is long enough not to be interfered during pivot of the swash plate.
- To achieve the above objects, there is provided a swash plate type compressor having variable capacity comprising a housing unit having a cylinder block where a plurality of bores are formed and forming a crank chamber, a suction chamber, and a discharge chamber, a drive shaft rotatably installed by the housing unit, a piston installed at each of the bores of the cylinder to be capable of sliding, a rotor disposed at the crank chamber and installed at the drive shaft, and rotating together with the drive shaft, a swash plate coupled to the rotor by a hinge unit for reciprocating the piston and having a hub coupled to the drive shaft, and a pivot unit for limiting a range of movement of the swash plate with respect to the drive shaft without change in the center of rotation of the swash plate as the center of rotation of the swash plate moves along a central axis of the drive shaft.
- The above objects and advantages of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the attached drawings in which:
- FIG. 1 is a sectional view of a conventional swash plate type compressor having variable capacity;
- FIG. 2 is a sectional view showing a state in which the swash plate is coupled to the drive shaft of FIG. 1
- FIG. 3 is a sectional view of a swash plate type compressor having variable capacity according to the present invention;
- FIG. 4 is a perspective view showing a state in which the drive shaft, the rotator, and the swash plate according to the present invention are coupled;
- FIG. 5 is an exploded perspective view showing a state in which the drive shaft, the rotator, and the swash plate according to the present invention are coupled; and
- FIG. 6 is a front view showing a state in which the rotation shaft and the hub of the swash plate are coupled.
- FIGS. 3 through 6 show a swash plate type compressor having variable capacity according to a preferred embodiment of the present invention. As shown in the drawing, the swash plate type compressor having variable capacity according to the present invention includes a
cylinder 23 where a plurality ofbores 22 to whichpistons 21 are coupled to be capable of sliding are installed, and front andrear housings crank chamber 24 a and a suction and discharge chamber and having thecylinder 23 installed therein. Adrive shaft 26 is rotatably installed at thefront housing 24 and thecylinder 23. Avalve assembly 60 having valves for controlling sucking and discharging of a heat exchange medium according to reciprocation of thepistons 21 is installed at a boundary between thecylinder 23 and therear housing 25. - A
rotor 27 disposed in thecrank chamber 24 a and aswash plate 28 disposed to be variably inclined with respect to thedrive shaft 26 and for reciprocating thepistons 21, are installed at thedrive shaft 26. Therotor 27 is fixed to thedrive shaft 26 and rotates together with thedrive shaft 26. Therotor 27 is coupled to ahub 29 by ahinge unit 30 and thehub 29 is coupled to theswash plate 28. Thehub 29 is coupled to thedrive shaft 26 by apivot unit 40 so that thehub 29 can nutate. Here, thehub 29 and theswash plate 28 can be formed integrally. - The
hinge unit 30, as shown in FIG. 5, includes afirst arm 31 extending from therotor 27 toward thehub 29, asecond arm 32 extending from thehub 29 toward thefirst arm 31, and ahinge pin 33 for hinge-coupling end portions of the first andsecond arms second arms hinge pin 33, since thehub 29 coupled to thedrive shaft 26 by thepivot unit 40 pivots in a state in which the center of rotation is fixed, aguide portion 31 a along with thehinge pin 33 moves is formed at thefirst arm 31 to absorb a relative transfer of thesecond arm 32 with respect to thefirst arm 31 during pivot. Here, thehinge pin 33 is installed at the first arm and theguide portion 31 a may be formed at thesecond arm 32. - Since the center of rotation of the
swash plate 28 moves along the central axis of thedrive shaft 26, thepivot unit 40 fixes the center of rotation by limiting a range of movement of theswash plate 28 with respect to thedrive shaft 26 without movement of the center of rotation of theswash plate 28. A preferred embodiment of thepivot unit 40 is shown in FIGS. 4 through 6. - As shown in the drawings, first and second
flat portions drive shaft 26. Aslot 43 is formed in portions where the first and secondflat portions drive shaft 26. The portion of thedrive shaft 26 where theslot 43 is formed is preferably formed such that a diameter in a direction perpendicular to the slot 43 (a diameter in a vertical direction) is formed to be relatively greater than a diameter in a horizontal direction so as to obtain a sufficient mechanical strength. Third and fourthflat portions flat portions shaft coupling portion 29 a formed at the center of thehub 29. Apin coupling hole 29 b is formed in theshaft coupling portion 29 a. Theshaft coupling portion 29 a is coupled to thedrive shaft 26 by apin 45 inserted into thepin coupling hole 29 b while penetrating theslot 43. Thepivot unit 40 is not limited to the above-described preferred embodiment, and any structure which can pin-couple the shaft and the shaft coupling portion without an additional member may be adopted. -
Reference numeral 70 denotes a pressure adjustment unit for controlling an angle of inclination of the swash plate by changing the pressure in the crank chamber by using the pressure of the discharge chamber. - In the operation of the swash plate type compressor having variable capacity which has the above structure according to the present invention, when the
drive shaft 26 rotates, theswash plate 28 hinge-coupled to therotor 27 and having thehub 29 coupled to thedrive shaft 26 by thepivot unit 40 to have a predetermined angle of inclination is rotated. Thus, thepistons 21 of which end portions are supported in the state in which shoes are interposed between theswash plate 28 and thepistons 21 reciprocate in thebores 22 of thecylinder 23. Accordingly, refrigerant is sucked from a suction chamber of therear housing 25 into thebores 22 through a sucking path of a valve unit, and then compressed toward a discharge chamber through a discharge path of thevalve unit 60. - In the above process, when load in cooling of an air conditioning system increases, pressure in the suction chamber of the compressor increases. That is, pressure increases as the amount of refrigerant supplied to a vaporizer increases and the phase of refrigerant changes completely. Sucking strength relatively increases. When the sucking strength increases, supply of compressed gas to the crank
chamber 24 a from the discharge chamber by the pressure adjustment unit is cut off so that the pressure in thecrank chamber 24 a decreases. - Accordingly, as the pressure in the
crank chamber 24 a decreases, when each of thepistons 21 moved from a top dead center to a bottom dead center, a force repulsive to compression applied by theswash plate 28 against the sucking strength decreases. When each of thepistons 21 moves from the bottom dead center to the top dead center, a force repulsive to sucking against a compression force applied to thepistons 21 relatively increases by theswash plate 28 so that the angle of inclination of theswash plate 28 increases. - In the above step in which the angle of inclination of the
swash plate 28 increases, since thehub 29 at which theswash plate 28 is supported is supported at thedrive shaft 26 by means of thepivot unit 40, theswash plate 28 moves along thedrive shaft 26 without change in the center of rotation of theswash plate 28. Since theslot 43 is formed in thedrive shaft 26 in the axial direction thereof and thepin 45 supported at theshaft coupling portion 29 a of thehub 29 is coupled to theslot 43, as the angle of inclination of theswash plate 28 increases, thepin 45 moves along theslot 43. Thus, thehub 29 moves along thedrive shaft 26 while pivoting without change in the center of rotation. Meanwhile, since the first and secondflat portions drive shaft 26 where theslot 43 is formed and the third and fourthflat portions shaft coupling portion 29 a of thehub 29, when rotational torque of thedrive shaft 26 is transferred to thehub 29, twist moment applied to the pin 34 can be minimized. - While this invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled 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.
- As described above, in the swash plate type compressor having variable capacity according to the present invention, since the hub at which the swash plate is supported is pin-coupled to the drive shaft without an additional bush, the structure of the compressor is simple and the number of steps according to the assembly of the drive shaft and the hub can be drastically reduced. Therefore, productivity in manufacturing the compressor is improved.
Claims (5)
1. A swash plate type compressor having variable capacity comprising:
a housing unit having a cylinder block where a plurality of bores are formed and forming a crank chamber, a suction chamber, and a discharge chamber;
a drive shaft rotatably installed by the housing unit;
a piston installed at each of the bores of the cylinder to be capable of sliding;
a rotor disposed at the crank chamber and installed at the drive shaft, and rotating together with the drive shaft;
a swash plate coupled to the rotor by a hinge unit for reciprocating the piston and having a hub coupled to the drive shaft; and
a pivot unit for limiting pivot of the swash plate as a slot formed in the drive shaft in the axial direction and the hub of the swash plate are directly pin-coupled,
wherein first and second flat portions are formed at both sides of the drive shaft in a direction perpendicular to the slot of the drive shaft, and third and fourth flat portions are formed at an inner surface of the hub corresponding to the first and second flat portions.
2. The compressor as claimed in claim 1 , wherein the hinge unit comprises a first arm extending from the rotor toward the hub where a guide portion is formed, and second arm extending from the hub toward the first arm where a hinge pin guided by the guide portion of the first arm is installed.
3. A swash plate type compressor having variable capacity comprising:
a housing unit having a cylinder block where a plurality of bores are formed and forming a crank chamber, a suction chamber, and a discharge chamber;
a drive shaft rotatably installed by the housing unit;
a piston installed at each of the bores of the cylinder to be capable of sliding;
a rotor disposed at the crank chamber and installed at the drive shaft, and rotating together with the drive shaft;
a swash plate coupled to the rotor by a hinge unit for reciprocating the piston and having a hub coupled to the drive shaft; and
a pivot unit for limiting a range of movement of the swash plate with respect to the drive shaft without change in the center of rotation of the swash plate as the center of rotation of the swash plate moves along a central axis of the drive shaft.
4. The compressor as claimed in claim 3 , wherein the hinge unit comprises a first arm extending from the rotor toward the hub where a guide portion is formed, and second arm extending from the hub toward the first arm where a hinge pin guided by the guide portion of the first arm is installed.
5. The compressor as claimed in claim 3 , wherein the pivot unit limits pivot of the swash plate as a slot formed in the drive shaft in the axial direction and the hub of the swash plate are directly pin-coupled.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR2000-59726 | 2000-10-11 | ||
KR10-2000-0059726A KR100382362B1 (en) | 2000-10-11 | 2000-10-11 | Swash plate type compressor of variable capacity |
Publications (1)
Publication Number | Publication Date |
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US20020040638A1 true US20020040638A1 (en) | 2002-04-11 |
Family
ID=19692913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/973,900 Abandoned US20020040638A1 (en) | 2000-10-11 | 2001-10-11 | Swash plate compressor having variable capacity |
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US (1) | US20020040638A1 (en) |
KR (1) | KR100382362B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006018162A1 (en) * | 2004-08-18 | 2006-02-23 | Zexel Valeo Compressor Europe Gmbh | Axial piston compressor |
CN101769244A (en) * | 2008-12-29 | 2010-07-07 | 上海三电贝洱汽车空调有限公司 | Movement mechanism of variable-displacement compressor |
CN102937075A (en) * | 2012-11-07 | 2013-02-20 | 苏州新豪轴承有限公司 | Vehicle air conditioner compression device |
CN110552859A (en) * | 2018-06-01 | 2019-12-10 | 学校法人斗源学院 | Variable displacement compressor |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100922123B1 (en) * | 2007-03-06 | 2009-10-16 | 학교법인 두원학원 | Assembly structure of drive shaft and swash plate for swash plate type compressor |
KR20090118513A (en) * | 2008-05-14 | 2009-11-18 | 학교법인 두원학원 | Swash pate type compressor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980055427U (en) * | 1996-12-31 | 1998-10-07 | 김욱한 | Swash plate fastening structure of swash plate type refrigerant compressor |
JPH11280645A (en) * | 1998-03-27 | 1999-10-15 | Sanden Corp | Variable capacity swash plate type compressor |
JPH11336657A (en) * | 1998-05-27 | 1999-12-07 | Nippon Soken Inc | Swash plate type variable displacement compressor |
JP3479233B2 (en) * | 1999-03-11 | 2003-12-15 | サンデン株式会社 | Cam mechanism of variable capacity swash plate type compressor |
-
2000
- 2000-10-11 KR KR10-2000-0059726A patent/KR100382362B1/en active IP Right Grant
-
2001
- 2001-10-11 US US09/973,900 patent/US20020040638A1/en not_active Abandoned
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006018162A1 (en) * | 2004-08-18 | 2006-02-23 | Zexel Valeo Compressor Europe Gmbh | Axial piston compressor |
CN101769244A (en) * | 2008-12-29 | 2010-07-07 | 上海三电贝洱汽车空调有限公司 | Movement mechanism of variable-displacement compressor |
CN102937075A (en) * | 2012-11-07 | 2013-02-20 | 苏州新豪轴承有限公司 | Vehicle air conditioner compression device |
CN110552859A (en) * | 2018-06-01 | 2019-12-10 | 学校法人斗源学院 | Variable displacement compressor |
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KR20020028619A (en) | 2002-04-17 |
KR100382362B1 (en) | 2003-05-01 |
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