JPS60182372A - Compressor equipped with oil separator - Google Patents

Abstract

PURPOSE:To obtain the superior oil separating performance by allowing an oil separator to be equipped with an oil return passage and a separating means in separated state, thus preventing the re-mixing of the separated oil. CONSTITUTION:An oil separator 15 is threadely engaged onto the rear plate 11 of a compressor body. Said oil separator 15 consists of two separating plates 16 and 17 opposed each other in parallel. A part of each of these separating plates 16 and 17 is cut, and the tilted projecting pieces 18 and 19 which are pulled-up inwardly are formed. The part between the both separating plates 16 and 17 is used as separating means. On the separating plate 17, an oil return hole 20 which is formed by pulling-up the inclined projecting piece 19 is formed. An oil return passage 21 is constituted between the separating plate 17 and the back part 3b of a rear cover 3. The tilted projecting pieces 18 and 19 are tilted towards the rear cover 3 side. Therefore, the separated oil is returned separately from a gas flow passage equipped with a separating means, passing through the oil return hole 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compressor equipped with an oil+m device, and particularly to a compressor equipped with an oil separation device that can satisfactorily separate oil from high pressure gas without relatively inhibiting the flow of high pressure gas. Regarding.

The oil content in the conventional compressor 11i1 [The device is equipped with a complex baffle plate, a compartment and filled with steel wool, or a wire mesh or the like is installed in the high-pressure gas flow path. The lubricating oil mixed in the high pressure gas was separated by U. However, since both of them are installed in the high-pressure gas passage, the oil that has been separated from the high-pressure gas collides with the high-pressure gas again and gets mixed into the gas, so they do not function adequately. On the other hand, oil was not accumulated in the oil reservoir, resulting in a burnout due to lack of lubricating oil in the compressor.
On the other hand, when such a compressor is used in a cooling system, oil gets mixed into the refrigerant gas, causing deterioration of cooling performance.

In view of these drawbacks of the prior art, the main purpose of the present invention is to
An object of the present invention is to provide a compressor equipped with an oil separator that guides the flow of high-pressure gas relatively tightly and has good oil separation performance.

A second object of the present invention is to provide a compressor with an oil separation device that is economical and easy to install.

The invention will now be described in detail with reference to specific embodiments with reference to the accompanying drawings.

FIG. 1 shows the entire compressor according to the invention. The compressor main body is installed inside the main body casing 2, and the rear casing 3 is screwed to the main body casing 2 by screwing the respective flanges 2a13a to the holes 1 and 4 to create a hermetic seal for the compressor. structure is constructed.

The compressor body has an inner casing 5 in which a rotor 6 with vanes 7 is received, and a shirt 1-9 integrally formed with the rotor 6 is attached to the back of the inner casing 5. It is pivotally supported by a bearing 10 provided on a rear plate 11 located at J. The high-pressure gas is discharged from the discharge hole 8 provided in the internal casing 5, and is not directly communicated with the discharge port 14 through the partition wall 12. It passes through the gap between the back surface of the rear plate 1-11 and the vertical inner wall surface of the rear bar 3, through an annular passage defined between
ll tlt 111 = 1, J: It is issued.

According to the present invention, the oil l1111 device 15 is
1 to 11, -C, and one HJI for the hydraulic pressure.
15 consists of two parallel separating plates 16 and 17 facing each other. These separation plates 16, 17 are provided with a plurality of inclined protrusions 18, 19, which are partially cut and pulled inwardly from each other, so as to protrude inwardly. Further, each of these inclined protrusions 18, 19 is inclined downwardly along the back direction of the compressor. A horizontally elongated oil return hole 20 is formed in the separation plate 17 without raising the inclined protrusion 19 at the base 17 on the back side of the compressor, and the rear cover 3 of the rear cover 3 of the plate 17 is formed in the separation plate 17. The rear cover back part 3b is narrowed into an oval shape at the back part of the
An oil return passage 21 is defined between the back surfaces of the cylinders.

As shown most clearly in Figure 2, rear play]
-11 is screwed to the inner casing -3-5 by bolts 24, and both 8 separation plates 16 are attached to the rear plays 1 to 11.
．． 17 are screwed together by four poles 1 to 23.

Next, the operating procedure of the device based on the present invention will be explained.

The high-pressure gas discharged from the discharge hole 8 is guided to the lower part of the compressor through the annular passage between the outer peripheral surface of the inner casing 5 and the side wall surface of the rear cover 3, and is guided to the lower part of the compressor through the narrowed back portion 3 of the rear casing 3.
It flows into the lower part 25 of the oil separator 150 through a passage 26 that opens at the lower part of the oil separator 150.

The high-pressure gas further ascends through the high-pressure gas passage 27 defined between the two separating plates 16 and 170, and in this process, the inclined protrusion 18
．． 19 captures the lubricating oil mixed into the high-pressure gas, and the captured lubricating oil passes through the oil return hole 20 to the second separation plate 1
The oil flows into the oil return passage 21 formed at the back of the compressor 7, and is returned to the oil sump chamber 28 at the bottom of the compressor along the back of the oil separation plate 17 on the spine side and the inner wall of the back 3b of the rear cover. At this time, since the oil return passage 21 is provided much narrower than the high pressure gas passage 27, the high pressure gas exclusively passes through the high pressure gas passage 27.

-4 J: According to the present invention, the protruding piece 1 protruding from the high pressure gas passage 27
8.19 is adapted to capture oil mixed in the high pressure gas, the flow path resistance against the high pressure gas is small, and the captured oil flows through the oil return passage 21 which is separated from the high pressure gas passage 27. After that, the oil is returned to the oil sump chamber 28. Therefore, the oil once captured in the oil-1 device 15 will not collide with the high-pressure gas and mix into the high-pressure gas again, so the compressor will not run out of lubricating oil and will not be compressed. When the air conditioner is used as a cooling device, a situation where lubricating oil is mixed into the refrigerant and cooling efficiency is reduced can be avoided.

In addition, there is no need to add any special processing to the compressor body or rear cover that make up the oil separator, and the oil separator itself can be formed by pressing a thin steel plate or molding resin or synthetic resin. J: It can be manufactured at a low cost, and its mounting can be done simply by screwing it onto the rear plate 11, making it extremely easy and economical.

Furthermore, since the oil separator can be housed in a narrow space along the inner surface of the back of the rear cover, there is also the advantage that the overall length of the compressor can be reduced and a compact compressor can be manufactured. .

FIG. 4 shows a modified embodiment of the above embodiment, in which the second separating plate is omitted and, instead, an inward projecting piece 3G is provided protruding from the back surface of the rear cover 3b'.

In this case, since the high-pressure gas passage and the oil return passage are not completely separated, the oil separation function is degraded, but there is an advantage that it is easier to manufacture and therefore more economical.

FIG. 5 and FIG. 6 show further modified embodiments,
In this case, when providing the inward projecting piece 19' on the second separating plate 17', the inward projecting piece 19' is formed by simply bending the plate without cutting it, unlike the previous embodiment.
The hl+ return passage 20' is formed by a hole ta in the second separation plate 17'.
It is formed by adding n I=j.

In this embodiment, only the second separating plate 17' is configured as a separating plate by combining such bending processing and hole processing, but either one of the two separating plates or Bending them both like this and making the hole 4'J' 7+
111: by dividing it into a board by dividing (Tl river), it is possible to compose J-tochichi1i1.

In this case, is the separation plate pressed? It has the advantage that it does not require any cutting process.

[Brief explanation of drawings]

Figure 1 shows the oil content M! based on the present invention. ￥ Tilt to the right
FIG. FIG. 2 is a side view of FIG. 1 with the rear cover removed along the Tl-IT line. FIG. 3 is a longitudinal cross-sectional view taken along the line ■--■ in FIG. 2. FIG. 4 is a diagram similar to FIG. 3 showing a modified embodiment. FIG. 5 is a partial vertical sectional view showing still another modified embodiment of the present invention. FIG. 6 is a diagram similar to FIG. 2 showing the oil separation container shown in FIG. 5. 1... Compression IX! ! 2... Main body casing 2a...
・Flange 3...Rear cover-7- 3a...Flange 3b...Back 3C...Protrusion piece 4...Pol 1-5...Internal casing 6...Rotor 7...Vane 8 ...Discharge hole 9...Shaft 10...Bearing 11...Rear plate 12...Partition wall 13...High pressure chamber 14...1)1 Outlet hole 15...Oil content 1llI device 16. 17...Separation plate 18.19...Protrusion piece 2
0...Oil return hole 21...Oil return passage 23.24.
...Bolt 25...Lower 26...Passage 27...High pressure gas passage 28...Oil sump weight
Applicant Honda Motor Co., Ltd. Agent Patent Attorney Yo Oshima - -8- FIG, 3 FIG, 4 FIG, 5 FIo, 6

Claims (2)

[Claims] (1) In a compressor having an oil separation device, a relatively wide high pressure gas passage having an oil separation means and a relatively narrow oil return passage are provided in a high pressure chamber and separated from each other, The compressor is characterized in that the oil separated from the high-pressure gas by the oil separation means is returned to the oil reservoir by the oil return passage through an oil return hole provided in the partition wall between the inner passages. Machine. (2) The high-pressure gas passage is formed by a gap between two opposing plates, and the oil return passage is defined in a gap between one of the plates and the compressor rear cover, and the oil separation means includes: The compressor according to claim 1, characterized in that the compressor comprises a protruding piece protruding into the high pressure gas passage.