JP2001271752A - Horizontal compressor - Google Patents

Abstract

(57) [Problem] To provide a horizontal compressor provided with a mechanism capable of returning lubricating oil separated on a high pressure chamber side to a low pressure chamber side in an appropriate state. SOLUTION: The refrigerant discharged into a high pressure chamber P is a high pressure chamber P.
From the discharge pipe 3 having a suction port 3a on the bottom surface of the compressor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal compressor, and more particularly to a horizontal compressor having a structure for preventing oil inside a horizontal compressor from rising.

[0002]

2. Description of the Prior Art Conventionally, in a horizontal compressor, as shown in FIG.
Is discharged to the high-pressure chamber P through the check valve 2 and further discharged to the high-pressure chamber P.
From the discharge pipe 3 having the above.

Here, the refrigerant discharged into the high-pressure chamber P includes:
The lubricating oil contained in the compressor is contained, and the lubricating oil separated in the high-pressure chamber P is supplied to an oil return pipe 4 provided at the bottom of the horizontal compressor.
Thus, the oil is returned from the high-pressure chamber P to the oil reservoir 5 provided on the low-pressure chamber.

[0004]

However, in the above-described horizontal compressor having the oil return mechanism, when the oil return mechanism is saturated, the lubricating oil accumulates in the high-pressure chamber, and as a result, the lubricating oil in the oil sump is discharged. Insufficient oil supply may occur on the low pressure chamber side. In addition, when the lubricating oil accumulates in the high-pressure chamber, the volume of the high-pressure chamber is reduced, so that the silencing effect may be reduced.

On the other hand, when the amount of oil flowing into the high-pressure chamber is small, the high-pressure refrigerant in the high-pressure chamber flows into the low-pressure chamber through the oil return pipe, and the capacity may be reduced.

In a horizontal compressor not provided with the oil return mechanism as described above, lubricating oil accumulates in the high-pressure chamber, resulting in a shortage of lubricating oil in the oil sump and insufficient oil supply in the low-pressure chamber. There is a possibility that.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a horizontal compressor having a mechanism capable of returning the lubricating oil separated on the high pressure chamber side to the low pressure chamber side in an appropriate state in the horizontal compressor. It is in.

[0008]

According to a first aspect of the present invention, there is provided a horizontal compressor for discharging a refrigerant compressed by a compression element to a high pressure chamber.
A horizontal compressor having a discharge pipe for guiding refrigerant discharged from the discharge port to the high-pressure chamber to the outside, wherein a suction port of the discharge pipe is provided in a region below the discharge port.

By employing this configuration, the lubricating oil accumulated in the high-pressure chamber is led to the compressor external system together with the refrigerant because the suction port of the discharge pipe is provided below the discharge port. It is easy to be done.

Thus, for example, after the refrigerant and the lubricating oil are separated by the oil separator provided in the external system of the compressor, the lubricating oil is returned to the oil sump. And a mechanism for returning the lubricating oil to the low-pressure chamber.

As a result, it is possible to avoid the occurrence of a shortage of refueling in the low-pressure chamber side and to prevent a reduction in the noise reduction effect. In addition, since it is not necessary to provide an oil return pipe, the high-pressure refrigerant in the high-pressure chamber does not flow into the low-pressure chamber, and it is possible to avoid a reduction in capacity.

According to a second aspect of the present invention, in the horizontal compressor according to the first aspect, the discharge pipe and the suction port are provided near a bottom surface of the high-pressure chamber. By adopting this configuration, it is possible to avoid the occurrence of a shortage of lubrication on the low-pressure chamber side, prevent the reduction of the noise reduction effect, and avoid the occurrence of a decrease in capacity, as in the above-described invention.

In the horizontal compressor according to a third aspect of the present invention, in the horizontal compressor according to the first aspect, the discharge pipe is provided near an upper surface side of the high-pressure chamber, and the suction port is provided. , Provided near the bottom side of the high-pressure chamber.

By adopting this configuration, it is possible to avoid the occurrence of a shortage of lubrication on the low-pressure chamber side, to prevent the reduction of the noise reduction effect, and to avoid the occurrence of a decrease in capacity, as in the above-described invention. In addition, since the discharge pipe itself is provided near the upper surface side of the high-pressure chamber, the position of the discharge pipe is in the same direction as the suction pipe. It becomes possible.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a horizontal compressor according to each embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) The structure of a horizontal compressor according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 is a partial cross-sectional view showing the structure of the horizontal compressor in the present embodiment.

Referring to FIG. 1, the refrigerant compressed by compression element CF is discharged from discharge port 1 through check valve 2 to high-pressure chamber P. Further, in the present embodiment, the refrigerant discharged into the high-pressure chamber P is led out to a compressor external system from a discharge pipe 3 having a suction port 3a on the bottom surface of the high-pressure chamber P.

(Operation / Effect) The lubricating oil accumulated in the high-pressure chamber P is supplied to the compressor together with the refrigerant because the suction port 3a of the discharge pipe 3 is provided below the discharge port 1. It is easy to be derived to an external system. As a result, for example, after the refrigerant and the lubricating oil are separated by the oil separator provided in the compressor external system, the lubricating oil is returned to the oil sump 2, and the low pressure of the compressor while the lubricating oil is contained is included. It is possible to adopt a mechanism to return lubricating oil to the chamber side, etc.
It is possible to avoid occurrence of a shortage of refueling on the low pressure chamber side. In addition, since the lubricating oil does not accumulate in the high-pressure chamber P, it is possible to avoid a decrease in the noise reduction effect due to a decrease in the volume of the high-pressure chamber P.

Further, unlike the conventional structure, there is no need to provide an oil return pipe, so that the high-pressure refrigerant in the high-pressure chamber P does not flow into the low-pressure chamber, thereby preventing a reduction in capacity. become.

(Embodiment 2) The structure of a horizontal compressor according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 2 is a partial sectional view showing the structure of the horizontal compressor according to the present embodiment.

Referring to FIG. 2, the difference between the horizontal compressor in the present embodiment and the horizontal compressor in the above-described first embodiment is that discharge pipe 3 is provided near the upper surface side of high-pressure chamber P, The suction port 3a is provided near the bottom surface of the high-pressure chamber P by using a pipe extending downward in the high-pressure chamber P.

(Operation / Effect) By adopting this configuration, in addition to the operation / effect of the first embodiment, since the discharge pipe 3 itself is provided near the upper surface side of the high-pressure chamber P, the suction pipe is Are in the same direction, and it is possible to carry out the process without impairing the workability when the horizontal compressor is incorporated in the compressor external system.

In each of the above embodiments, the case of the discharge pipe 3 in which the suction port 3a is provided below has been described, but the structure in which the suction port 3a is provided in a region below the discharge port 1 is described. If so, the discharge pipe 3 may be provided at any position.

In each of the above embodiments, the case where the present invention is applied to an open type horizontal compressor is described. However, the present invention is not limited to the open type and can be applied to any type of horizontal compressor. .

Therefore, the embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The technical scope of the present invention is defined not by the above description but by the appended claims, and is intended to include all modifications within the scope and meaning equivalent to the appended claims.

[0026]

According to the horizontal compressor according to the present invention,
Since the suction port of the discharge pipe is provided in a region below the discharge port, the lubricating oil accumulated in the high-pressure chamber is easily discharged to the compressor external system together with the refrigerant. As a result, it is possible to avoid the occurrence of a shortage of refueling on the low pressure chamber side, and to prevent a reduction in the noise reduction effect. In addition, since it is not necessary to provide an oil return pipe, the high-pressure refrigerant in the high-pressure chamber does not flow into the low-pressure chamber, and it is possible to avoid a reduction in capacity.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view illustrating a structure of a horizontal compressor according to a first embodiment based on the present invention.

FIG. 2 is a partial sectional view showing a structure of a horizontal compressor according to a second embodiment based on the present invention.

FIG. 3 is a cross-sectional view showing the structure of a conventional horizontal compressor.

[Explanation of symbols]

1 discharge port, 2 check valve, 3a suction port, 3 discharge pipe,
CF compression element, P high pressure chamber.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroyuki Kuroiwa 3-12 Chikushinmachi, Sakai-shi, Osaka Daikin Industries, Ltd. Sakai Plant Rinkai Plant F-term (reference) 3H003 AA05 AB05 AC03 BD12 BH06 CD01 CD06 CE02 3H029 AA02 AA16 AA21 AB03 BB01 BB03 BB21 BB32 CC02 CC09 CC25 CC33

Claims (3)

[Claims] 1. A discharge port (1) for discharging refrigerant compressed by a compression element (CF) to a high-pressure chamber (P), and discharged from the discharge port (1) to the high-pressure chamber (P). A horizontal compressor including a discharge pipe (3) for guiding a refrigerant to the outside, wherein a suction port (3a) of the discharge pipe (3) is provided in a region below the discharge port (1). , Horizontal compressor. 2. The discharge pipe (3) and the suction port (3).
a) is provided near the bottom side of the high-pressure chamber (P);
The horizontal compressor according to claim 1. 3. The high pressure chamber (P), wherein the discharge pipe (3) is provided.
The horizontal compressor according to claim 1, wherein the suction port (3a) is provided near a top surface of the high pressure chamber (P).