KR20160132603A - Refrigerant discharge structure of swash plate type compressor - Google Patents

Refrigerant discharge structure of swash plate type compressor Download PDF

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Publication number
KR20160132603A
KR20160132603A KR1020150065338A KR20150065338A KR20160132603A KR 20160132603 A KR20160132603 A KR 20160132603A KR 1020150065338 A KR1020150065338 A KR 1020150065338A KR 20150065338 A KR20150065338 A KR 20150065338A KR 20160132603 A KR20160132603 A KR 20160132603A
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KR
South Korea
Prior art keywords
discharge
muffler
swash plate
cylinder block
front side
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Application number
KR1020150065338A
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Korean (ko)
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KR102013308B1 (en
Inventor
이재욱
정상호
심우신
Original Assignee
이래오토모티브시스템 주식회사
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Priority to KR1020150065338A priority Critical patent/KR102013308B1/en
Publication of KR20160132603A publication Critical patent/KR20160132603A/en
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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
    • 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
    • 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

Abstract

The present invention provides a refrigerant discharge structure of a swash plate type compressor which can minimize pulsation noises. To this end, the present invention provides the refrigerant discharge structure of the swash plate type compressor having a front housing with a front side discharge chamber, a front side cylinder block, a rear side cylinder block and a rear side discharge chamber, which comprises: a front side muffler provided in the front side cylinder block; a rear side muffler provided in the rear side cylinder block; a front side discharge hole formed in the front side cylinder block and making the front side discharge chamber communicate with the front side muffler; and a rear side discharge hole formed in the rear side cylinder block and making the rear side discharge chamber communicate with the rear side muffler, wherein the front side muffler and the rear side muffler communicate with each other and include two or more discharge flow paths communicating with each other, respectively.

Description

[0001] The present invention relates to a refrigerant discharge structure of a swash plate type compressor,

The present invention relates to a swash plate compressor used for automotive air conditioning and the like.

2. Description of the Related Art Generally, a swash plate type compressor is widely used as a compressor of an air conditioner for an automobile. A swash plate is installed on a shaft to rotate a shaft to convert a swash plate rotational motion into a reciprocating motion of a piston, And compression.

Particularly, the swash plate type compressor 10 disclosed in Korean Patent No. 10-0840915 includes a pair of cylinder blocks 11 and 12, a front cylinder block (upper cylinder in FIG. 1) And a rear housing 14 (housing construction body) joined to the rear side (lower side in FIG. 1) cylinder block 12. The front housing 13 (housing construction body) The front side valve body 15 is interposed between the front cylinder block 11 and the front housing 13 and between the rear cylinder block 12 and the rear housing 14, Side valve body 19 is interposed.

The cylinder blocks 11 and 12 have block bodies 11A and 12A and peripheral walls 11B and 12B which are installed upright on outer peripheral edges of the block bodies 11A and 12A. A swash plate chamber 25 is formed in a region surrounded by the opposing faces of both the block bodies 11A and 12A and the both-side walls 11B and 12B. Further, the drive shaft 22 is rotatably supported. The drive shaft 22 is inserted into the shaft holes 11a and 12a formed in the central portions of the block bodies 11A and 12A of the cylinder blocks 11 and 12 and the shaft holes 11a and 12a, And is rotatably supported by the cylinder blocks 11 and 12. [

A swash plate 24 is accommodated in the swash plate chamber 25 and the swash plate 24 is fixed to the drive shaft 22 so as to be rotatable integrally with the drive shaft 22. Headed piston 30 as a piston is pierced through the shoe 31 at the outer peripheral portion of the swash plate 24. [

A plurality of cylinder bores 28 (for example, five cylinder bores 28 in FIG. 1) are provided in the block body 11A of the front side cylinder block 11 around the drive shaft 22 Respectively. A plurality of cylinder bores 29 (for example, five cylinder bores 29 shown in Fig. 1) are provided in the block body 12A of the rear-side cylinder block 12, As shown in FIG. The block body 11A of the front cylinder block 11 is formed with a plurality of (for example, five) conductive passages 41 connecting the respective cylinder bores 28 and the shaft holes 11a, The block body 12A of the rear cylinder block 12 is formed with a plurality of (for example, five) conductive passages 42 for connecting the respective cylinder bores 29 and the shaft holes 12a.

The double-headed piston 30 is accommodated in cylinder bores 28, 29 which are paired before and after. The rotary motion of the swash plate 24 (the plate portion 24b) rotating integrally with the drive shaft 22 is transmitted to the double-headed piston 30 through the pair of shoes 31 formed with the swash plate 24 therebetween , The double-headed piston (30) reciprocates back and forth in the cylinder bores (28, 29).

Hereinafter, the suction structure of the refrigerant in the conventional swash plate type compressor 10 will be described.

As shown in Figs. 1 and 2, annular grooves 50 and 51 and suction recesses 60 and 61 are formed on the side faces of the block bodies 11A and 12A facing the swash plate chamber 25, respectively. Particularly, the annular groove portion 50. 51 is formed on the outer peripheral side of the shaft holes 11a and 12a (drive shaft 22) so as to surround the shaft holes 11a and 12a, and the valve seats 11c and 12c and the thrust And open toward the bearings 26, 27. The annular groove portions 50 and 51 are formed in an annular shape having a diameter larger than that of the shaft holes 11a and 12a. A plurality of (for example, five) suction recesses 60 and 61 extending in the form of a thin groove are formed in the side surfaces of the block bodies 11A and 12A facing the swash plate chamber 25, As shown in Fig. Each of the suction recesses 60 and 61 is disposed between adjacent cylinder bores 28 and 29 at equal intervals in the circumferential direction of the drive shaft 22. One end of each of the suction recesses 60 and 61 communicates with the annular groove portions 50 and 51 and the other end thereof is surrounded by peripheral walls 11B and 12B (outer peripheral portions of the cylinder blocks 11 and 12) As shown in Fig.

1, a swash plate chamber 25 and cylinder bores 28, 29 (a compression chamber (not shown) are formed in the circumferential surface 22a of the drive shaft 22 at positions opposed to the shaft holes 11a, 28a, 29a) through the conduction passages (41, 42). The two suction passages (70) are formed at a position deviated by 180 degrees in the circumferential direction of the drive shaft (22).

Therefore, when the rear-side cylinder bore 29 is in the intake stroke state (i.e., the stroke in which the double-headed piston 30 moves from the right side to the left side in Fig. 1), the suction passage 70 is communicated with the conduction passage 42 Continuously. The refrigerant in the swash plate chamber 25 is introduced into the annular groove portion 51 from all the suction recesses 61 and the refrigerant introduced into the annular groove portion 51 flows through the suction passage 70 into the conduction passage 42, . As a result, the refrigerant is sucked into the cylinder bore 28.

On the other hand, when the front cylinder bore 28 is in the state of the discharge stroke (the stroke in which the double-headed piston 30 moves from the right side to the left side in Fig. 1), the swash plate chamber 25 and the cylinder bore 28 Is blocked by the peripheral surface 22a on which the suction passage 70 of the drive shaft 22 is not formed. The refrigerant in the compression chamber 28a pushes the discharge valve 15b from the discharge port 15a and is discharged to the discharge chamber 13a which becomes the discharge pressure region.

Although not shown in Korean Patent No. 10-0840915, the refrigerant discharged to the discharge chambers 13a and 14a flows through the discharge hole 81 to the cylinder block 11 And is guided to a discharge port (not shown) and flows out to an external refrigerant circuit.

However, the conventional swash plate type compressor has the following problems.

2B, the muffler has a narrow width and is formed long in the cylinder blocks 11 and 12 in the form of a single flow path, and the front-side discharge hole 13a and the muffler 80 are communicated with each other. Side discharge hole 82 in which the discharge port 81 and the rear-side discharge chamber 14a communicate with the muffler 80 are arranged in a straight line in the axial direction of the drive shaft, There is a problem that the refrigerant gas is not properly mixed inside the muffler 80 such that the refrigerant gas is simply moved linearly through the muffler 80 and pulsation noise is generated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigerant discharge structure of a swash plate type compressor capable of minimizing pulsation noise.

In order to achieve the above object, a refrigerant discharge structure of a swash plate type compressor according to an embodiment of the present invention includes a front housing having a front side discharge chamber, a front side cylinder block, a rear side cylinder block, A refrigerant discharge structure of a swash plate type compressor including a housing, comprising: a front side muffler provided in the front side cylinder block; A rear-side muffler provided in the rear-side cylinder block; A front side discharge hole formed in the front side cylinder block and communicating the front side discharge chamber and the front side muffler; And a rear side discharge hole formed in the rear side cylinder block and communicating the rear side discharge chamber and the rear side muffler, wherein the front side muffler and the rear side muffler are communicated with each other, and the front side muffler and the rear side muffler are connected to each other, Each of the side mufflers includes two or more discharge flow paths communicating with each other.

The two or more discharge channels may include first and second discharge channels, and each of the first and second discharge channels may be formed long in the longitudinal direction of the swash plate type compressor. The discharge flow path may be arranged in a direction perpendicular to the longitudinal direction of the swash plate type compressor, the first discharge flow path of the front side muffler may be in communication with the first discharge flow path of the rear side muffler, And the second discharge passage of the front-side muffler can communicate with the second discharge passage of the rear-side muffler.

The front-side discharge hole may be formed to correspond to the first discharge passage, and the rear-side discharge hole may be formed to correspond to the second discharge passage.

The first and second discharge passages may have a symmetrical structure with respect to a communicating portion therebetween as a center.

As described above, the refrigerant discharge structure of the swash plate compressor according to the embodiment of the present invention can have the following effects.

According to the embodiment of the present invention, since the muffler in which the front-side discharge hole and the rear-side discharge hole communicate with each other has two or more discharge paths, it is possible to select the positions of the front-side discharge hole and the rear- Selection optimization can minimize the pulsation noise of the swash plate compressor. Particularly, when the front-side discharge hole is formed so as to correspond to the first discharge passage and the rear-side discharge hole is formed to correspond to the second discharge passage, since the refrigerant flow rotates inside the muffler, Noise can be further reduced.

1 is a cross-sectional view schematically showing a conventional swash plate type compressor.
2A is a view showing a refrigerant discharge structure of a conventional swash plate type compressor as viewed from one end of a front side cylinder block.
FIG. 2B is a perspective view showing a refrigerant discharge structure of FIG. 2A. FIG.
3 is a view illustrating a refrigerant discharge structure of a swash plate type compressor according to an embodiment of the present invention, viewed from one end of a front side cylinder block.
FIG. 4 is a perspective view showing a refrigerant discharge structure of the swash plate type compressor of FIG. 3; FIG.
FIG. 5 is a cross-sectional view of the swash plate compressor of FIG. 4 taken along line VV.
FIG. 6 is a view schematically showing a flow direction in which refrigerant is discharged through a refrigerant discharge structure of the swash plate type compressor of FIG. 3. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 3 is a view showing a refrigerant discharge structure of a swash plate type compressor according to an embodiment of the present invention, viewed from one end of a front side cylinder block, FIG. 4 is a principal part perspective view showing a refrigerant discharge structure of the swash plate type compressor of FIG. 5 is a cross-sectional view of the swash plate type compressor of FIG. 4 cut by the VV line, and FIG. 6 is a schematic view of the flow direction of the refrigerant discharged through the refrigerant discharge structure of the swash plate type compressor of FIG.

The refrigerant discharge structure of the swash plate type compressor according to the embodiment of the present invention includes a front housing (13 in FIG. 1) having a front side discharge chamber (13a in FIG. 1), a front side cylinder block 11, 3 to 6, the front-side muffler 12 is a refrigerant discharge structure of a swash plate type compressor including a rear housing 12 (shown in Fig. 1) and a rear housing 14 Side muffler 120, a front-side discharge hole 130, and a rear-side discharge hole 140. The front- Hereinafter, each component will be described in detail with continued reference to Figs. 3 to 5. Fig.

3, the front-side muffler 110 is provided on the outer circumferential surface of the front-side cylinder block 11, and the refrigerant gas discharged from the front-side discharge hole 130 and the rear- And serves as a guide to the discharge port (P).

Particularly, since the front-side muffler 110 includes two or more discharge passages 111, it is possible to freely select the positions of the front-side discharge hole 130 and the rear-side discharge hole 140, The pulsation noise of the swash plate type compressor can be minimized.

3 and 4, when the front-side muffler 110 includes the first and second discharge passages 111a and 111b, the first and second discharge passages 111a and 111b May be elongated in the longitudinal direction of the swash plate type compressor. In addition, the first and second discharge passages 111a and 111b may be arranged in a direction perpendicular to the longitudinal direction of the swash plate type compressor.

Particularly, the first discharge passage 111a of the front-side muffler 110 communicates with the first discharge passage 121a of the rear-side muffler 120, and the second discharge passage 111b of the front- Can communicate with the second discharge passage (121b) of the rear-side muffler (120).

Further, the first and second discharge passages 111a and 111b of the front-side muffler 110 can be symmetrically symmetrical about the communicating portion therebetween, so that the flow of the refrigerant gas in the same volume interval So that the pulsation noise can be further reduced.

The rear-side muffler 120 is provided on the outer peripheral surface of the rear-side cylinder block 12 and communicates with the front-side muffler 110, and the refrigerant gas discharged from the rear-side discharge hole 140 and the front- To the discharge port (P) together with the front side muffler (110).

In particular, since the rear-side muffler 120 also includes two or more discharge passages 121, positioning with respect to the rear-side discharge hole 140 and the front-side discharge hole 130 together with the front-side muffler 110 is free By optimizing the position, the pulsation noise of the swash plate type compressor can be minimized.

4 and 5, when the rear-side muffler 120 includes the first and second discharge passages 121a and 121b, as in the case of the front-side muffler 110 described above, Each of the first and second discharge passages 121a and 121b may be formed long in the longitudinal direction of the swash plate type compressor. In addition, the first and second discharge passages 121a and 121b may be arranged in a direction perpendicular to the longitudinal direction of the swash plate type compressor.

Particularly, like the front muffler 110, the first and second discharge passages 121a and 121b of the rear-side muffler 120 can have a symmetrical structure centering on the communicating portion therebetween So that the flow of the refrigerant gas occurs in the same volume section, so that the pulsation noise can be further reduced.

The front side discharge hole 130 is formed in the front side cylinder block 11 and serves to communicate the front side discharge chamber (13a in FIG. 1) and the front side muffler 110. In particular, when the rear side discharge hole 140 is formed to correspond to the second discharge flow path 121b of the rear side muffler 120, the front side discharge hole 130 is shifted in position, And may be formed to correspond to the first discharge passage 111a. Therefore, as shown in FIG. 6, the flow of the refrigerant gas is rotated inside the front side muffler 110 and the rear side muffler 120, so that the pulsation noise of the swash plate type compressor can be further reduced.

The rear side discharge hole 140 is formed in the rear side cylinder block 12 and serves to communicate the rear side discharge chamber (14a in FIG. 1) and the rear side muffler 120.

As described above, the refrigerant discharge structure of the swash plate type compressor according to the embodiment of the present invention can have the following effects.

According to the embodiment of the present invention, a muffler (collectively referred to as a combination of the front-side muffler 110 and the rear-side muffler 120) in which the front-side discharge hole 130 and the rear- It is possible to freely select the positions of the front side discharge hole 130 and the rear side discharge hole 140 because of the two or more discharge paths 111a or 121a (111b or 121b) The pulsation noise of the compressor can be minimized. Particularly, when the front-side discharge hole 130 is formed so as to correspond to the first discharge passage 111a or 121a and the rear-side discharge hole 140 is formed to correspond to the second discharge passage 111b or 121b, Since the flow is rotated inside the muffler, the pulsation noise of the swash plate compressor can be further reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

11: Front side cylinder block 12: Rear side cylinder block
13: Front housing 13a: Front side discharge chamber
14: Rear housing 14a: Rear side discharge chamber
110: Front side muffler 111: Discharge channel of the front side muffler
111a: a first discharge port of the front-
111b: the second discharging flow path of the front-
120: Rear-side muffler 121: Discharge channel of the rear-side muffler
121a: a first discharge port of the rear-side muffler
121b: the second discharging flow path of the rear-side muffler
130: Front side discharge hole
140: Rear side discharge hole

Claims (4)

In a refrigerant discharge structure of a swash plate type compressor including a front housing having a front side discharge chamber, a front side cylinder block, a rear side cylinder block, and a rear housing having a rear side discharge chamber,
A front side muffler provided in the front side cylinder block;
A rear-side muffler provided in the rear-side cylinder block;
A front side discharge hole formed in the front side cylinder block and communicating the front side discharge chamber and the front side muffler; And
And a rear-side discharge hole formed in the rear-side cylinder block and communicating the rear-side discharge chamber and the rear-side muffler,
The front-side muffler and the rear-side muffler are communicated with each other,
The front-side muffler and the rear-
And two or more discharge paths communicating with each other
Refrigerant Discharge Structure of Swash Compressor. The method according to claim 1,
The two or more discharge channels
The first and second discharge flow paths,
Wherein each of the first and second discharge ports
Wherein the swash plate type compressor is formed long in the longitudinal direction of the swash plate type compressor,
The first and second discharge channels
Wherein the first and second compression chambers are arranged side by side in a direction perpendicular to the longitudinal direction of the swash plate type compressor,
The first discharge passage of the front-side muffler is in communication with the first discharge passage of the rear-side muffler,
And the second discharge passage of the front-side muffler is communicated with the second discharge passage of the rear-side muffler
Refrigerant Discharge Structure of Swash Compressor. 3. The method of claim 2,
The front-side discharge hole
A second discharge passage formed so as to correspond to the first discharge passage,
The rear-side discharge hole
And a second discharge passage formed so as to correspond to the second discharge passage
Refrigerant Discharge Structure of Swash Compressor. 3. The method according to claim 2 or 3,
The first and second discharge channels
And has a symmetrical structure centering on the communicating portion therebetween
Refrigerant Discharge Structure of Swash Compressor.
KR1020150065338A 2015-05-11 2015-05-11 Refrigerant discharge structure of swash plate type compressor KR102013308B1 (en)

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KR1020150065338A KR102013308B1 (en) 2015-05-11 2015-05-11 Refrigerant discharge structure of swash plate type compressor

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KR102013308B1 KR102013308B1 (en) 2019-08-26

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1054358A (en) * 1996-08-12 1998-02-24 Toyota Autom Loom Works Ltd Muffler structure of compressor
JPH1089251A (en) * 1996-09-20 1998-04-07 Toyota Autom Loom Works Ltd Muffler structure of double head piston type compressor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1054358A (en) * 1996-08-12 1998-02-24 Toyota Autom Loom Works Ltd Muffler structure of compressor
JPH1089251A (en) * 1996-09-20 1998-04-07 Toyota Autom Loom Works Ltd Muffler structure of double head piston type compressor

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