CN211852093U

CN211852093U - Swash plate type compressor with oil return mechanism

Info

Publication number: CN211852093U
Application number: CN201922477656.3U
Authority: CN
Inventors: 王舟人; 范晶晶
Original assignee: Sanden Huayu Automotive Air Conditioning Co Ltd
Current assignee: Sanden Huayu Automotive Air Conditioning Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-03
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a swash plate compressor technical field provides a take swash plate compressor of oil return mechanism, makes the lubricating oil that is detained at the exhaust chamber return the swash plate chamber, improves the lubrication. The compressor has a cylinder body assembled together in the axial direction, the cylinder body has a plurality of cylinders, pistons are provided in the cylinders, the pistons reciprocate to suck and compress refrigerant gas, and the compressed refrigerant gas enters a discharge chamber. The compressor has a lubricant passage connecting the discharge chamber and the swash plate chamber, one end of the lubricant passage being close to the bottom of the discharge chamber and the other end being close to the bottom of the swash plate chamber.

Description

Swash plate type compressor with oil return mechanism

Technical Field

The utility model relates to a compressor technical field especially relates to compressor lubrication mechanism.

Background

When the compressor works, the moving part and the static part rub violently, and the compressor is easy to wear and generate noise. Therefore, when the compressor is filled with lubricating oil, the lubricating oil is stirred by the air flow in the moving part and the cylinder body, and oil mist is formed, and when the oil mist is scattered on the moving part, the moving part is lubricated to a certain degree.

However, since the lubricating oil flows in the direction of the exhaust gas following the air flow, much of the lubricating oil enters and stays in the exhaust chamber, and cannot return to the swash plate chamber to provide lubrication of the moving member, resulting in insufficient lubrication.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide a take swash plate compressor of oil return mechanism makes the lubricating oil that is detained at the exhaust chamber return the swash plate chamber, improves lubricated.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the swash plate type compressor with the oil return mechanism includes: a cylinder block defining a central bore extending axially therethrough and having a plurality of axial cylinders arranged around the central bore; a swash plate chamber provided in the cylinder block; the cylinder cover is arranged at the end part of the cylinder body, and a suction cavity of the refrigerating gas and an exhaust cavity of the compressed refrigerating gas are divided in the cylinder cover; a plurality of pistons slidably mounted in the cylinder; a driving shaft rotatably installed in the central hole of the cylinder block; a swash plate disposed in the swash plate chamber and mounted on the driving shaft so as to rotate together with the driving shaft and drive the plurality of pistons mounted therearound to compress gas in the cylinders; a valve plate component for controlling air suction and air exhaust is arranged between the cylinder body and the cylinder cover; and the lubricating oil channel is connected with the exhaust cavity and the swash plate cavity, one end of the lubricating oil channel is close to the bottom of the exhaust cavity, and the other end of the lubricating oil channel is close to the bottom of the swash plate cavity.

As the preferable scheme of the compressor, the valve plate component comprises a cylinder gasket, a suction valve plate, a discharge valve plate and a cylinder cover gasket which are sequentially and axially arranged, and the lubricating oil channel comprises a hole or a groove in the valve plate component.

As a preferable scheme of the compressor, a hole in the valve plate member penetrates through the cylinder head gasket, the valve plate and the suction valve plate, the groove penetrates through the cylinder head gasket, and the hole is communicated with one end of the groove.

Preferably, the lubricant passage includes a hole penetrating the valve plate member at a position near the bottom of the discharge chamber, a groove in the cylinder block, and an elongated hole at a position below the cylinder block.

Preferably, the slot is provided with a throttle pipe.

As a preferable mode of the compressor, a side wall surrounds the exhaust cavity, a pit and a curved groove extending upwards from the curve of the pit are formed at the bottom of the side wall, the lubricating oil channel comprises the curved groove and a hole or a groove on the valve plate member, and the curved groove is communicated with the hole on the valve plate member.

As a preferable aspect of the compressor, the curved groove is formed on the side wall and the head gasket.

As the preferable scheme of the compressor, the compressor is a bidirectional swash plate type compressor, the exhaust cavities are arranged at the front and the rear of the compressor, and the lubricating oil channel is arranged between the two exhaust cavities and the swash plate cavity.

The utility model has the advantages that: through the proper position in exhaust chamber and sloping cam plate chamber to through opening hole or groove at valve plate part, cylinder cap, cylinder block, form lubricating oil passageway, will be detained the lubricating oil in the exhaust chamber, through the high pressure effect in exhaust chamber, draw back to the sloping cam plate chamber and provide the lubrication.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a main sectional view of a compressor according to embodiment 1;

FIG. 2 is a schematic view of the assembly of the cylinder block, the valve plate member and the cylinder head after the implementation 1;

FIG. 3 is a schematic view of the assembly of the cylinder block, valve plate member, cylinder head after implementation 2;

fig. 4 is a schematic view showing the assembly of the cylinder block, the valve plate member, and the cylinder head after the embodiment 3.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, is a sectional view of a bidirectional swash plate type compressor for a vehicle air conditioner. There are a pair of front and

rear cylinders

2 and 3, which are collectively referred to as a cylinder, and bolts (not shown) connect and fasten the front and

rear cylinders

2 and 3 to form a swash plate chamber 40. The drive shaft 1 penetrates the swash plate 5, and the drive shaft 1 is supported at its front end by a bearing 7 in a central bore 6 of the front cylinder block 2 and at its rear end by a bearing 9 in a central bore 8 of the rear cylinder block 3. The front and rear cylinder covers 14, 15 are respectively provided with an air suction cavity 12 and an air discharge cavity 11. Valve plate members 13 are interposed between the front and

rear cylinder blocks

2, 3 and the front and rear cylinder heads 14, 15. When the driving shaft 1 rotates the swash plate 5, the pistons 17 of the swash plate 5 reciprocate to suck the refrigerant into the cylinders 10 and discharge the compressed refrigerant out of the cylinders 10.

Part of the lubricating oil is discharged to the exhaust cavity 11 along with the refrigerant gas, falls to and stays at the bottom of the exhaust cavity 11 under the action of gravity, and is provided with a lubricating oil channel, the lubricating oil is led to the bottom of the swash plate cavity 40, one end of the channel is arranged at a position close to the bottom of the exhaust cavity, and the other end of the channel is arranged at a position close to the bottom of the swash plate cavity or close to the bottoms of the

cylinder bodies

2 and 3.

The valve plate component 13 comprises a cylinder gasket 131, a suction valve plate 132, a valve plate 133, a discharge valve plate 134 and a cylinder head gasket 135 which are sequentially and axially arranged, wherein the suction valve plate 132 is opened when the cylinder 10 sucks gas, the corresponding discharge valve plate 134 is closed at the moment, otherwise, when the cylinder 10 discharges gas, the discharge valve plate 134 is opened, and the corresponding suction valve 132 is closed.

Example 1: as shown in fig. 1 and 2, the lubricant passage is formed by through holes 131A, 132A, 133A, 135A penetrating the valve plate member 13 and the groove 101 in the cylinder block 3, wherein the through holes 131A, 132A, 133A, 135A are close to the bottom of the exhaust chamber 11, the upper end of the groove 3A is connected to the through holes, and the lower end is close to the bottom of the cylinder block 3. A long hole 3B is provided in a lower position of the cylinder block 3 to communicate the groove 3A with the swash plate chamber 40.

The lubricating oil retained at the bottom of the exhaust chamber 11 is subjected to high pressure and gravity, and sequentially passes through the through holes 135A, 133A, 132A, and 131A, and then passes through the groove 3A and the elongated hole 3B to enter the swash plate chamber 40 in the direction of the arrow in fig. 2. In order to reduce the accumulation of the lubricating oil, a throttle pipe 18 is installed in the long hole 3B.

In embodiment 2, as shown in fig. 3, the lubricating oil passage is formed by connecting through holes 135A, 133A, 132A, a through groove 131B in the head gasket 131, and a long hole 3B penetrating the lower end of the through groove 131B, and the lubricating oil returns to the swash plate chamber 40 from the bottom of the exhaust chamber 11 in the direction of the arrow under the action of high pressure and gravity.

Corresponding grooves may be formed in the rear end surfaces of the head gasket 131 and the cylinder block 3, and the through hole may be penetrated through the elongated hole 3B.

In embodiment 3, as shown in fig. 4, the side wall 15A surrounds the exhaust chamber 11, the concave portion 15B is formed at the bottom of the side wall 15A, the curved groove 15C extending upward in a curved line is formed from the concave portion 15B, the curved groove 135B corresponding to the curved groove 15C and having a shape conforming to the curved groove is formed in the head gasket 135, and the curved groove communicates with the holes 133A, 132A of the valve plate member 13 to form a lubricating oil passage indicated by an arrow. The pit of this embodiment is more convenient for the concentration of lubricating oil, and the length in curved groove can set up as required, guides the position of being convenient for set up the through-hole on the valve plate.

The utility model discloses if be used for two-way swash plate compressor, preceding, back all are equipped with the exhaust chamber, only need correspond in the front, back and set up like the lubricating oil passageway in the embodiment, can reach the same oil return effect.

The foregoing is only a preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A swash plate type compressor with an oil return mechanism includes:

a cylinder block defining a central bore extending axially therethrough and having a plurality of axial cylinders arranged around the central bore;

a swash plate chamber provided in the cylinder block;

the cylinder cover is arranged at the end part of the cylinder body, and a suction cavity of the refrigerating gas and an exhaust cavity of the compressed refrigerating gas are divided in the cylinder cover;

a plurality of pistons slidably mounted in the cylinder;

a driving shaft rotatably installed in the central hole of the cylinder block;

a swash plate disposed in the swash plate chamber and mounted on the driving shaft so as to rotate together with the driving shaft and drive the plurality of pistons mounted therearound to compress gas in the cylinders;

a valve plate component for controlling air suction and air exhaust is arranged between the cylinder body and the cylinder cover; it is characterized in that the preparation method is characterized in that,

and the lubricating oil channel is connected with the exhaust cavity and the swash plate cavity, one end of the lubricating oil channel is close to the bottom of the exhaust cavity, and the other end of the lubricating oil channel is close to the bottom of the swash plate cavity.

2. The swash plate compressor with the oil returning mechanism according to claim 1, wherein the valve plate member includes a cylinder head gasket, a suction valve plate, a discharge valve plate, and a head gasket which are axially sequentially arranged, and the lubricant passage includes a hole or a groove in the valve plate member.

3. The swash plate compressor with the oil returning mechanism according to claim 2, wherein a hole in the valve plate member penetrates the head gasket, the valve plate, and the suction valve plate, the groove penetrates the head gasket, and the hole communicates with one end of the groove.

4. The swash plate compressor with the oil returning mechanism according to claim 1 or 2, wherein the lubricant oil passage includes a hole penetrating the valve plate member at a position near the bottom of the discharge chamber, a groove in the cylinder block, and a long hole at a lower position of the cylinder block.

5. The swash plate compressor with the oil return mechanism according to claim 4, wherein a throttle pipe is provided in the long hole.

6. The swash plate compressor with the oil returning mechanism according to claim 1, 2 or 3, wherein a side wall surrounds the discharge chamber, a bottom of the side wall forms a dimple and a curved groove extending upward from the curvature of the dimple, and the lubricant passage includes the curved groove and a hole or a groove in the valve plate member, and the curved groove communicates with the hole in the valve plate member.

7. The swash plate compressor with the oil returning mechanism according to claim 6, wherein the bent groove is formed on the side wall and the head gasket.

8. The swash plate compressor with the oil return mechanism according to claim 1, wherein the compressor is a bidirectional swash plate compressor, the exhaust chambers are provided at the front and the rear, and the lubricating oil passage is provided between the two exhaust chambers and the swash plate chamber.