JPH01200076A - Sealed type compressor - Google Patents

Abstract

PURPOSE:To improve the heat insulating effect of the returned coolant gas by supporting a suction tube which extends, penetrating through a sealed container, onto the sealed container through a sleeve, etc., having the heat insulating performance. CONSTITUTION:The intake passage of a sealed type compressor communicates to a suction tube 2 fixed onto a sealed container 1 and a suction muffler 5 which is made of the heat insulating material such as plastic through an inserting tube 4 which communicates to the tube 2 and has a flexible connecting fitting 3 midway. In this case, a sleeve 6 which is made of the heat insulating stainless steel having a low heat conductivity is fitted into a penetration part where the suction tube 2 penetrates through the sealed container 1. The suction tube 2 is inserted into the sleeve 6. Therefore, the transmission of the heat of the sealed container 1 to the suction tube 2 is prevented, and the heat insulating effect of the returned coolant gas is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hermetic compressor (hereinafter referred to as a compressor) used in refrigerators and the like.

Conventional technology In recent years, the energy efficiency of compressors has improved, but
One of the main technologies is to improve the suction gas by first heating it in a compressor and expanding it, then inhaling and compressing the low-density suction gas in a cylinder, thereby insulating the reduction in suction gas density. This prevents water damage and increases inhalation efficiency. Although a high level of insulating gas has been achieved at present, an even higher insulating effect is desired.

An example of a conventional compressor will be described below with reference to the drawings. FIG. 4 is an enlarged sectional view of essential parts of a conventional compressor, and FIG. 6 is an assembled sectional view of the conventional compressor. In FIGS. 4 and 5, the suction path is connected to a suction muffler 5 made of a heat insulating material such as plastic through a flexible connector 3 and an insert tube 4 that communicate with a suction tube 2 fixed to a closed container 1. It has a structure in which the compression chamber (not shown) is fitted into the compression chamber and communicates with the compression chamber (not shown). The suction tube 2 is made of steel to prevent rust since water droplets from the cooled return 9 refrigerant gas will adhere thereto.

The operation of the compressor configured as above will be explained below. First, the cooled return refrigerant gas is transferred to the suction tube 2. The flexible connector 3 is fed into the suction muffler 5 via the insert tube 4 and compressed.

Problems to be Solved by the Invention However, in the above configuration, before the suction muffler 5 insulates the return refrigerant gas, the suction tube 2 made of copper with high thermal conductivity absorbs the heat of the closed container 1, This has the problem of heating the refrigerant gas.

In view of the above-mentioned problems, the present invention provides a compressor with high energy efficiency and a structure in which return refrigerant gas is not easily heated.

Means for Solving the Problems In order to solve the above problems, the compressor of the present invention is provided with a structure in which a closed container and a suction tube are connected via a heat-insulating sleeve or the like.

According to the above-described configuration, the present invention connects the airtight container and the suction tube via a heat-insulating sleeve or the like, thereby insulating the suction tube from the heat of the airtight container and discharging the return refrigerant. Gas can be sent to the compression chamber in a lower humidity state.

EXAMPLE Hereinafter, a compressor according to an example of the present invention will be described with reference to the drawings. FIG. 1 is an assembled sectional view of an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the main parts. Incidentally, the same parts as those in the prior art are given the same reference numerals, and detailed explanation thereof will be omitted. A suction tube 2 communicating with a closed container 1 is fixed via a stainless steel sleeve 6.

The operation of the compressor configured as above will be explained. The cooled return refrigerant gas is sent to the suction muffler 5 via the suction tube 2, flexible connector 3, and insert tube 4, and is compressed. At this time, the sleeve 6 made of stainless steel with low thermal conductivity prevents the heat of the closed container 1 from being conducted to the suction tube 2, thereby improving the heat insulation effect of the returned refrigerant gas.

FIG. 3 is an enlarged sectional view of a main part showing another embodiment, in which the closed container 1 and the suction tube 20 are connected through a glass 7. The operation and effects are similar to the previous embodiment.

As described above, according to this embodiment, by connecting the closed container 1 and the suction tube 2 via the stainless steel sleeve 6 or the glass 7, it is possible to improve the heat insulation effect of the return refrigerant gas. Compression efficiency improves because dense gas can be compressed.

Effects of the Invention As described above, the present invention improves the heat insulation effect of the returned refrigerant gas by connecting the airtight container and the suction tube through a sleeve or the like having heat insulation properties. Since it can be compressed, compression efficiency is improved.

[Brief explanation of the drawing]

FIG. 1 is an assembled sectional view of a compressor according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the same essential parts, and FIG. 3 is an enlarged sectional view of essential parts in another embodiment of the present invention. FIG. 4 is an enlarged sectional view of essential parts of the conventional example, and FIG. 6 is an assembled sectional view of the conventional example. 1...Airtight container, 2...Suction tube, 6...Sleeve. Name of agent: Patent attorney Toshio Nakao and 1 other person56
-;Z″-7°. Figure 2 Figure 3

Claims (1)

[Claims] 1. A hermetic compressor comprising a hermetic container and a suction tube communicating with the hermetic container, the hermetic container and the suction tube being connected via a heat insulating sleeve or the like.