JPS62247196A - Suction device for rotary compressor - Google Patents

Abstract

PURPOSE:To increase the refrigerating capacity of a compressor and the energy efficiency, by forming a discharge noise muffler by a space defined between an inner wall of a closed case shell and a bearing on the opposite side of a motor. CONSTITUTION:A suction tube 14 is air-tightly fixed to a bearing 13 on the opposite side of a motor. A discharge noise muffler 16 is formed by a space defined between an inner wall 11b of a closed case shell 11a and the bearing 13. The closed case shell 11a and the suction tube 14 are fixed to each other by welding. With this arrangement, an exposed length of the suction tube 14 in the closed case shell 11 a is reduced to greatly minimize an extent that a suction refrigerant gas is heated. Therefore, the suction refrigerant gas is made into a thick gas with a small specific volume, and is sucked into a compressor element. Accordingly, the refrigerating capacity of a compressor may be improved to increase the energy efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a horizontal rotary compressor (hereinafter referred to as a compressor) that is incorporated into a refrigeration cycle or the like.

BACKGROUND OF THE INVENTION In recent years, rotary compressors have been required to have excellent energy efficiency, but although the energy efficiency of conventional compressors has gradually improved, they are still insufficient.

An example of the conventional compressor mentioned above will be described below with reference to the drawings. FIG. 2 shows a cross section of a conventional compressor. In FIG. 2, a compression element 2 is housed inside a closed case 1. As shown in FIG. A suction tube 4 is hermetically fixed to a bearing 3 that constitutes a part of the compression element 2. 1a is a case shell forming a side surface of the closed case 1.

The operation of the compressor configured as above will be explained below. When the compressor starts operating, as the refrigerant gas is compressed by the compression mechanism 2, the refrigerant gas is sucked through the suction tube 4.

The length l of the suction tube in the sealed case in Figure 2 is longer than 25111 mm, but this is because the temperature inside the sealed case is high because the sealed case is filled with high-temperature discharge gas. Therefore, the purpose is to lengthen the sealed case 1 to improve heat radiation.

Problems to be Solved by the Invention However, with the above configuration, the temperature inside the closed case is high (at the exposed length l of the suction tube inside the closed case) during suction into the compression element 2. During normal refrigerator operation, the temperature is 85 to 90℃), and the gas is rapidly warmed in the suction tube and has a large specific volume and is diluted.As a result, the compressor has a low refrigerating capacity and low energy efficiency (E, F, R ) also had the problem that it did not improve.

In view of the above problems, the present invention provides a compressor with high refrigerating capacity and high energy efficiency (E, R, R).

Means for Solving the Problems In order to solve the above problems, the compressor of the present invention includes a bearing, a sacsidine tube hermetically fixed to the bearing on the side opposite to the motor, and a sealed case shell on the side of the sealed case. , a discharge noise muffling muffler configured by a case shell disposed in close contact with or close to the bearing and a space formed between an inner wall of the sealed case shell and the bearing on the side opposite to the motor; and the succicon tube are fixed by welding.

Effect of the Invention With the above-described configuration, the length of the sealed case can be shortened due to the good heat dissipation of the discharge silencing muffler.As a result, the feldspar of the suction tube in the sealed case is shortened, and the degree of heating inside the suction tube is extremely small. Therefore, a dense refrigerant gas with a small specific volume is sucked into the compression element, and the refrigerating capacity and energy efficiency of the compressor are high.

EXAMPLE Hereinafter, a compressor according to an example of the present invention will be described with reference to the drawings. FIG. 1 shows a cross section of a compressor in one embodiment of the present invention. In FIG. 1, a suction tube 14 is hermetically fixed to a bearing 13 on the opposite side of the motor, which constitutes a part of the compression element 2 housed in a sealed case 11. 11a is a sealed case shell forming the side surface of the sealed case 11, and 15 is a socket tube that is welded and fixed to the sealed case shell 11a and is airtightly welded with a suction tube 14 inserted therein. It is something that was given. 1
Reference numeral 6 designates a discharge noise muffler 16 that is constituted by a space formed between the inner wall 11b of the sealed case shell 11a and the bearing 13 on the side opposite to the motor. In addition, L in FIG. 1 is the exposed length of the succinic tube 14 inside the closed case.

The operation of the compressor configured as described above will be explained below using FIG. 1. When the compressor starts operating,
The gas discharged as the refrigerant gas is compressed by the compression mechanism 12 accumulates in the discharge muffler 77 16, and heat is released from the sealed case shell 11a, passes through the sealed case, and is circulated to the system (not shown). Saxicon tube 1 after
Refrigerant gas is sucked through 4. Since the length of the suction tube 14 in the closed case indicated by L in FIG. 1 is short, the degree to which the suction refrigerant gas is heated is extremely small.

As described above, according to this embodiment, the sealed case shell 11a is disposed in close contact with the anti-motor side bearing 13 or within 25118,
The space formed between the inner wall 11b of 1a and the bearing 13 on the opposite side of the motor constitutes a discharge silencing muffler, and the exposed length of the sacsicon tube 14 in the sealed case is shortened, so that the suction refrigerant gas is heated. Since the refrigerant gas is a dense gas with a small specific volume and is sucked into the compression element, the refrigerating capacity of the compressor is improved and the compressor becomes highly energy efficient.

Effects of the Invention As described above, the present invention provides an airtight structure in which the bearing constituting the compression element, the sealed case shell on the side surface of the sealed case, and the case shell are disposed in close contact with or close to the bearing on the side opposite to the motor. It is equipped with a discharge noise muffler consisting of a space formed between the inner wall of the case shell and the bearing on the side opposite to the motor. The exposed length of the contube is shortened and the suction refrigerant gas is heated to a very small extent.
The suction refrigerant gas becomes a dense gas with a small specific volume and is sucked into the compression element. As a result, the refrigerating capacity of the compressor is improved, resulting in an excellent compressor with high energy efficiency.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a rotary compressor according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional rotary compressor. DESCRIPTION OF SYMBOLS 11... Sealed case, 11a... Sealed case shell, 11b... Inner wall of sealed case shell, 12... Compression element, 13... Counter motor Side bearing, 14...Suction tube, 1
6...Discharge noise muffler. Name of agent: Patent attorney Toshio Nakao and 1 other person//
- Your name case / fa - Your name case shell / Ib - 11 customer back case shell wall 12 - 1 pressure #l @ cable

Claims (1)

[Claims] a bearing constituting a compression element, a suction tube airtightly fixed to a bearing on the side opposite to the motor among the bearings, and a sealed case shell on a side surface of the sealed case;
A case shell is disposed in close contact with or in close proximity to the bearing on the side opposite to the motor of the bearing, and a discharge noise muffler is provided, which is constituted by a space formed between the inner wall of the sealed case shell and the bearing on the side opposite to the motor. , a suction device for a rotary compressor in which the sealed case shell and the suction tube are fixedly welded.