JP2005188394A - Compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compressor, in which a separation chamber can be formed by assemblage of members without need of cutting work to a compressor main body. <P>SOLUTION: The separation chamber 51 is formed by setting a recessed part 11a provided on one end side in a first housing 11 and a recessed part 21c provided in a fixed scroll member 21 to face each other. The separation chamber 51 can thus be formed by assemblage of the first housing 11 and the fixed scroll member 21 without need of cutting work, thereby productivity can be improved. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a compressor used for refrigerant compression, such as a vehicle air conditioner.

  Conventionally, this type of compressor includes a compressor body that sucks and discharges refrigerant, a compressor that compresses refrigerant sucked into the compressor body, and lubricating oil contained in the refrigerant discharged from the compressor. A separation unit that separates the refrigerant from the refrigerant, the refrigerant compressed together with the lubricating oil in the compression unit in the compressor body is separated into the refrigerant and the lubricating oil in the separation unit, and the refrigerant is discharged to the outside of the compressor body. Is known.

The separation unit includes a separation chamber provided in the compressor body and a separation pipe provided in the separation chamber, and allows a refrigerant containing lubricating oil to flow in a tangential direction of the inner wall of the separation chamber. The lubricating oil adheres to the inner wall of the separation chamber to separate the refrigerant and the lubricating oil, and the separated refrigerant flows through the separation pipe and is discharged to the outside of the compressor body. Those are known (for example, see Patent Document 1).
2001-295767

  However, in the conventional compressor, since the separation chamber is formed by cutting the compressor body, there is a problem that the manufacturing process increases and the manufacturing cost increases.

  Further, since the separation pipe is fixed by the tip of the discharge pipe by connecting the discharge pipe of the refrigerant discharge port to the upper part of the separation chamber, the position of the refrigerant discharge port is limited to the upper part of the separation chamber, and the refrigerant discharge port There was a problem that the degree of freedom of the placement of was limited.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a compressor that can form a separation chamber by assembling members without requiring cutting of the compressor body. It is to provide.

  In addition to the above object, another object of the present invention is to provide a compressor capable of providing a refrigerant discharge port at a predetermined position regardless of the position of the separation chamber.

  In order to achieve the above object, according to the present invention, in claim 1, a compressor that compresses the refrigerant sucked into the compressor body and a separation that separates the lubricating oil contained in the refrigerant discharged from the compressor from the refrigerant. In the compressor provided with a chamber, the inner surface of the compressor main body and a predetermined surface of other parts arranged in the compressor main body are provided with recesses that form the separation chamber by facing each other. Yes. As a result, the separation chamber is formed by the recesses respectively provided on the inner surface of the compressor body and a predetermined surface of another component disposed in the compressor body. A separation chamber is formed only by assembling with other components to be arranged.

  According to a third aspect of the present invention, in the configuration of the first aspect, a compression unit that compresses the refrigerant sucked into the compressor body, and a separation chamber that separates the lubricant contained in the refrigerant discharged from the compression unit from the refrigerant. The compressor main body is provided with a refrigerant storage chamber for storing the refrigerant separated from the lubricating oil in the compressor main body, a refrigerant discharge port is provided at a predetermined position of the refrigerant storage chamber, and an inner surface of the compressor main body is provided. The refrigerant storage chamber is provided on a predetermined surface of another component disposed in the compressor body so as to face each other. Thereby, in addition to the operation of the first aspect, the refrigerant separated from the lubricating oil is accommodated in the refrigerant accommodating chamber, so that the refrigerant discharge port can be arranged at a predetermined position in the refrigerant accommodating chamber. In addition, since the refrigerant storage chamber is formed by the recesses respectively provided on the inner surface of the compressor main body and a predetermined surface of another component arranged in the compressor main body, the compressor main body and the compressor main body A refrigerant storage chamber is formed only by assembling with other components to be arranged.

  According to the present invention, since the separation chamber can be formed by assembling the compressor main body and other components arranged in the compressor main body, there is no need to separately form the separation chamber by cutting, for example, The productivity can be improved by reducing the amount.

  Further, according to the present invention, since the refrigerant separated from the lubricating oil is accommodated in the refrigerant accommodating chamber, the refrigerant discharge port can be freely arranged regardless of the position of the separating portion. Furthermore, since the refrigerant storage chamber can be formed by assembling the compressor main body and other components arranged in the compressor main body, it is not necessary to form a separate refrigerant storage chamber by, for example, cutting, thereby reducing the number of steps. Thus, productivity can be improved.

  1 to 4 show an embodiment of the present invention. FIG. 1 is a side sectional view of a compressor, FIG. 2 is a front sectional view of the compressor, FIG. 3 is a sectional plan view of the compressor, and FIG. It is a decomposition side sectional view of a compressor.

  The compressor includes a compressor main body 10 that sucks and discharges refrigerant, a compression unit 20 that compresses refrigerant sucked into the compressor main body 10, a drive shaft 30 that drives the compression unit 20, and a drive shaft 30. The electromagnetic clutch 40 that transmits power from the outside, the separation unit 50 that separates the lubricant contained in the refrigerant discharged from the compression unit 20 from the refrigerant, and the refrigerant storage chamber 60 that stores the separated refrigerant are separated. And an oil storage chamber 70 for supplying the lubricating oil to the refrigerant suction side of the compression unit 20.

  The compressor body 10 is formed in a hollow shape and includes a first housing 11 and a second housing 12. The first housing 11 forms one end surface and a side surface of the compressor body 10, and the refrigerant discharge chamber 13, the separation unit 50, the refrigerant storage chamber 60, and the oil storage chamber 70 are provided on one end side inside the first housing 11. A refrigerant suction port (not shown) is provided on the side surface of the first housing 11, and a refrigerant discharge port 14 is provided on the side surface on the one end surface side. The second housing 12 forms the other end surface of the compressor body 10 and is fixed to the first housing 11 by bolts 15.

  The compression unit 20 includes a fixed scroll member 21 disposed on one end side in the first housing 11 and a movable scroll member 22 disposed on the other end side in the first housing 11. Is fixed in the first housing 11 so as to partition the refrigerant discharge chamber 13, the separation part 50 and the refrigerant storage chamber 60. One spiral body 21 a is provided on one end surface of the fixed scroll member 21, and a through hole 21 b communicating with the refrigerant discharge chamber 13 is provided in a substantially central portion of the fixed scroll member 21. The other end surface of the fixed scroll member 21 is provided with a plate-like discharge valve 23 that opens and closes the through hole 21b. The discharge valve 23 is adjusted to a predetermined opening by a retainer 24 attached to the other end surface of the fixed scroll member 21. Being regulated. The other scroll 22a is provided on one end surface of the movable scroll member 22, and a boss portion 22b extending toward the second housing 12 is provided on the other end surface. Further, a rotation prevention mechanism 25 is provided between the movable scroll member 22 and the second housing 12, and performs a predetermined turning motion in which the movable scroll member 22 is prevented from rotating by the rotation prevention mechanism 25. .

  One end side of the drive shaft 30 is rotatably supported by the second housing 12 via a roller bearing 31, and the other end side thereof is rotatably supported by the second housing 12 via a ball bearing 32. . An eccentric pin 33 that is eccentric with respect to the axial center of the drive shaft 30 protrudes from one end surface of the drive shaft 30, and the eccentric pin 33 is inserted into the eccentric bush 34. Further, the eccentric bush 34 is rotatably supported by the boss portion 22 b of the movable scroll member 22 via the roller bearing 35.

  The electromagnetic clutch 40 includes a rotor 41 that rotates coaxially with respect to the drive shaft 30, a pulley 42 that is provided integrally with the rotor 41, an armature 43 that rotates coaxially with respect to the rotor 41, and the armature 43. And the electromagnetic coil 45 capable of adsorbing the opposing surfaces in the axial direction of the rotor 41 and the armature 43 to each other by magnetic force.

  The rotor 41 is made of a magnetic material formed in an annular shape, and its inner peripheral surface is rotatably supported by the second housing 12 of the compressor body 10 via a roller bearing 41a. An annular recess 41b is provided on one end surface side of the rotor 41, and an electromagnetic coil 45 is accommodated in the recess 41b. The other end surface of the rotor 41 faces the armature 43 in the axial direction, and the armature 43 is attracted by the electromagnetic coil 45.

  The pulley 42 is provided on the outer peripheral surface of the rotor 41, and a V belt (not shown) is wound around the pulley 42.

  The armature 43 is made of a magnetic material formed by an annular plate member, and one end surface thereof is opposed to the other end surface of the rotor 41 with a slight gap, and is attracted to the other end surface of the rotor 41 by the electromagnetic coil 45. It has become so.

  The hub 44 is made of a metal member formed in a disk shape, and one end side of the drive shaft 30 is connected to the center thereof, and the drive shaft 30 is fixed to the hub 44 by a nut 44a. The hub 44 is connected to the armature 43 via a connecting plate 44b and a plate spring 44c, and the armature 43 can be displaced toward the rotor 41 by elastic deformation of the plate spring 44c.

  The electromagnetic coil 45 is composed of a wire gland with an insulating film, and is fixed to the inside of the stator 45a by a resin member such as epoxy. The stator 45 a is made of a magnetic body having a substantially U-shaped cross section formed in an annular shape, and is fixed in the recess 41 a of the rotor 41. The stator 45a is connected to the compressor body 10 via an annular connecting member 45b.

  The separation unit 50 includes a pair of separation chambers 51 disposed on the left and right sides of the refrigerant discharge chamber in FIG. 2 and a separation pipe 52 provided in each separation chamber 51.

  The separation chamber 51 is provided so as to extend in the vertical direction by opposing the concave portions 11a and 21c provided on one end side in the first housing 11 and the fixed scroll member 21, and the inside thereof has a substantially circular cross section. Is formed. In this case, the recesses 11a and 21c are formed when the first housing 11 and the fixed scroll member 21 are molded by, for example, casting. The upper end of the separation chamber 51 is provided with a connection hole 51a for fixing the separation pipe 52 by providing the first housing 11 and the fixed scroll member 21 with the notches 11b and 21d, respectively, so as to communicate with the refrigerant storage chamber 60. It has become. On the lower end side of the separation chamber 51, an introduction hole 51 b that communicates with the oil storage chamber 70 is provided by providing notches 11 c and 21 e in the first housing 11 and the fixed scroll member 21, respectively. In addition, a communication hole 51 c is provided toward the end surface of the fixed scroll member 21 by cutting out the first housing 11 in the upper part of the side surface of the separation chamber 51 on the refrigerant discharge chamber 13 side.

  The separation tube 52 is formed of a cylindrical member, and the upper end side thereof is sandwiched by connecting the first housing 11 and the fixed scroll member 21 in a connection hole 51 a provided at the upper end of the separation chamber 51. It is like that. At this time, by sandwiching the separation tube 52 in the connection hole 51a of the separation chamber 51, the upper end side of the separation tube 52 is deformed to restrict the vertical movement of the separation tube 52. Further, the lower end side of the separation tube 52 is disposed with a predetermined distance from the lower surface of the separation chamber 51.

  Refrigerant storage chamber 60 has left and right sides in FIG. 2 along the upper side of the side surface of compressor body 10 by making recesses 11d and 21f provided in one end side of first housing 11 and fixed scroll member 21 face each other. It is provided to extend in the direction. Lower portions on both the left and right ends of the refrigerant storage chamber 60 communicate with each other through connection holes 51 a of the separation chambers 51, and a refrigerant discharge port 14 is provided on the outer peripheral surface side of the refrigerant storage chamber 60.

  The oil storage chamber 70 is formed by opposing the concave portions 11e and 21g provided in the one end side of the first housing 11 and the fixed scroll member 21, respectively, and is disposed below the refrigerant discharge chamber 13 and the separation portions 50. ing. The upper part of the oil storage chamber 70 communicates with the introduction hole 51a of each separation chamber 51, and the lower part of the oil storage chamber 70 is connected to the refrigerant suction side of the compression unit 20 via the filter 71 and the orifice 72 provided in the fixed scroll member 21. Communicate.

  In the compressor configured as described above, when engine power is input to the pulley 42 of the electromagnetic clutch 40, the rotor 41 rotates integrally with the pulley 42. At that time, when the energization of the electromagnetic coil 45 is stopped, since the opposing surfaces in the axial direction of the rotor 41 and the armature 43 are held at a distance from each other, the rotor 41 idles with respect to the armature 43 and the rotor 41 rotates. The force is not transmitted to the armature 43. When the electromagnetic coil 45 is energized, the armature 43 is attracted to the rotor 41 side by the magnetic force of the electromagnetic coil 45, and the rotor 41 and the armature 43 are pressed against each other and frictionally engaged. Thereby, the rotational force of the rotor 41 is transmitted, and the rotational force of the armature 43 is transmitted to the drive shaft 30.

  When the drive shaft 30 rotates, the movable scroll member 22 of the compression unit 20 performs a predetermined turning motion by the rotation of the eccentric bush 34. As a result, the refrigerant that has flowed into the first housing 11 from the refrigerant suction port of the compressor body 10 is sucked between the spiral body 22a of the movable scroll member 22 and the spiral body 21a of the fixed scroll 21, and each spiral body 21a. , 22a. In addition, about the compression operation | movement of each spiral body 21a, 22a, since it is the same as that of a well-known scroll type compressor, detailed description is abbreviate | omitted.

  The compressed refrigerant is discharged into the refrigerant discharge chamber 13, and is discharged from the refrigerant discharge chamber 13 to the separation chambers 51 through the communication holes 51c. At this time, the compressed refrigerant contains lubricating oil, and the lubricating oil flows in the separation chamber 51 by causing the refrigerant discharged from each communication hole 51 c to circulate along the inner wall of the separation chamber 51. The refrigerant and the lubricating oil are separated from the inner wall. The refrigerant separated from the lubricating oil is discharged from the lower end of the separation pipe 52 in the separation chamber 51 to the refrigerant storage chamber 60, and is discharged to the outside from the refrigerant discharge port 14 arbitrarily disposed above the refrigerant storage chamber 60. Further, the lubricating oil descends due to its own weight, and is discharged into the oil storage chamber 70 through the introduction hole 51 a below the separation chamber 51.

  Lubricating oil discharged from the separation unit 50 is stored in the oil storage chamber 70, and the stored lubricating oil is sucked into the refrigerant suction side of the compression unit 20 due to the difference between the refrigerant suction side of the compression unit 20 and the internal pressure of the oil storage chamber 70. After the impurities are removed by the filter 71, the supply amount is adjusted by the orifice 72 and supplied to the refrigerant suction side of the compression unit 20.

  According to the present embodiment, the separation chamber 51 is formed by making the concave portion 11a provided on one end side in the first housing 11 and the concave portion 21c provided in the fixed scroll member 21 face each other. The separation chamber 51 can be formed by assembling the housing 11 and the fixed scroll member 21. For example, it is not necessary to form the separation chamber 51 separately by, for example, cutting, so that the number of steps can be reduced and the productivity can be improved.

  In addition, the first housing 11 and the fixed scroll member 21 located above the separation chamber 51 are provided with cutout portions 11b and 21d, respectively, and the first housing 11 and the fixed scroll member 21 are assembled to form the cutout portions 11b and 21d. Since the separation pipe 52 is sandwiched between them, the separation pipe 52 is easily fixed by assembling the first housing 11 and the fixed scroll member 21 without connecting the refrigerant discharge pipe for fixing the separation pipe 52. In addition, the refrigerant discharge port 14 can be freely arranged regardless of the position of the separation unit 50, and the productivity can be improved.

  Further, since the refrigerant housing chamber 60 for receiving the refrigerant separated from the lubricating oil is provided in the compressor body 10, the refrigerant discharge port 14 can be easily disposed within the refrigerant housing chamber 60, and the productivity is increased. Can be further improved. Further, the refrigerant housing chamber 60 is formed by making the concave portion 11d provided at one end side in the first housing 11 and the concave portion 21f provided in the fixed scroll member 21 face each other, so that the first housing 11 is fixed. The refrigerant storage chamber 60 can be formed by assembling the scroll member 21. For example, it is not necessary to separately form the refrigerant storage chamber 60 by cutting, so that the number of steps can be reduced and the productivity can be improved.

  Further, since the pair of separation parts 50 are provided in the compressor body 10, the refrigerant and the lubricating oil can be more reliably separated from each other as compared with the case where the separation part 50 is one, and the lubricating oil flows out to the refrigerant circuit. By reducing the cooling efficiency, the cooling efficiency can be improved.

  In the embodiment, the separation chamber 50 is formed by the recess 11 a provided on the inner surface of the first housing 11 and the recess 21 c provided on one end surface of the fixed scroll member 21 facing each other. However, another member may be opposed to the first housing 11 without using the fixed scroll member 21.

AA sectional view of a compressor showing one embodiment of the present invention. BB cross section of compressor CC sectional view of compressor Exploded side sectional view of compressor

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... 1st housing, 11a ... Recess, 11b ... Notch, 11d ... Recess, 21 ... Fixed scroll member, 21c ... Recess, 21d ... Notch, 21f ... Recess, 50 ... Separation part, 51 ... Separation chamber, 52 ... separation pipe, 60 ... refrigerant storage chamber.

Claims (5)

In a compressor including a compression unit that compresses refrigerant sucked into the compressor body, and a separation chamber that separates lubricant contained in the refrigerant discharged from the compression unit from the refrigerant.
The compressor according to claim 1, wherein recesses that form the separation chamber are provided on an inner surface of the compressor body and a predetermined surface of another component disposed in the compressor body so as to face each other. The notch part which clamps the separation pipe provided in the said separation chamber was each provided in the inner surface of the said compressor main body, and the predetermined surface of the other components arrange | positioned in a compressor main body. The compressor described. In a compressor including a compression unit that compresses refrigerant sucked into the compressor body, and a separation chamber that separates lubricant contained in the refrigerant discharged from the compression unit from the refrigerant.
While providing a refrigerant storage chamber for storing the refrigerant separated from the lubricating oil in the compressor body, provided a refrigerant discharge port at a predetermined position of the refrigerant storage chamber,
The compressor is characterized in that the refrigerant storage chamber is provided by facing an inner surface of the compressor main body and a predetermined surface of another component arranged in the compressor main body. The compressor according to claim 3, wherein the refrigerant storage chamber is formed to extend along a peripheral surface of the compressor body. The compressor according to claim 1, 2, or 3, wherein a plurality of separation chambers are provided in the compressor body, and each separation chamber is communicated with the refrigerant storage chamber.

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