Hermetic type compressor

Abstract

The present invention provides a hermetic type compressor which can raise a suction efficiency of a refrigerant gas by minimizing pressure loss of the refrigerant gas when the refrigerant gas passes through a suction storing device. The hermetic type compressor is characterized in that: the suction storing device comprises the following elements: (1) an inflow pipe, which is a straight pipe with a fixed inner diameter, and is connected with a refrigerant piping of refrigeration cycle; (2) a main body part, which has a tubular integral body, wherein two ends of the main body part are in the shape of area contraction, and the main body part has a specified diameter of the following volume, the volume can realize the functions of performing gas-liquid separation for the suction refrigerant gas and storing the separated liquid-state refrigerant which contains refrigerating machine oil, the end of the main body part at the inflow pipe side is in the shape of diffuser with a specified opening angle, the diffuser shape part is smoothly formed by curves which are protruded inwards, and is connected with the inflow pipe; and (3) at least one outflow pipe, wherein a diameter of an inflow port of the outflow pipe is larger than a diameter of the inflow pipe, or the inflow port is in the shape of bell mouth.

Description

technical field [0001] The present invention relates to hermetic compressors. In detail, it is related with the hermetic-type compressor which suppresses the pressure loss of a suction accumulator. Background technique [0002] Conventionally, in order to ensure the gas-liquid separation of sucked-in refrigerant gas and the storage volume of the separated liquid refrigerant containing refrigerating machine oil, it has been proposed to insert an outflow pipe into a cylindrical main body so as to reach the inside of the main body. A suction accumulator of a hermetic compressor having an inflow pipe (for example, refer to Patent Document 1.). [0003] Patent Document 1: Japanese Patent Laying-Open No. 2009-162222 ( Figure 8 ) [0004] The suction accumulator provided in the conventional hermetic compressor, which has the function of gas-liquid separation of the suction refrigerant gas and the function of storing the separated liquid containing refrigerating machine oil, is l...

AI Technical Summary

Problems solved by technology

[0006] (2) The rapid contraction loss of the above-mentioned refrigerant gas when it flows into the above-mentioned outflow pipe through the main part of the suction accumulator is extremely large

[0007] Therefore, the suction efficiency of the refrigerant gas decreases, resulting in a decrease in the pressure of the refrigerant gas sucked into the compressor, and an increase in compression work is required compared to the ideal pressure state of the refrigeration cycle

As a result, the efficiency of the compressor decreases, and the pressure of the evaporator included in the air conditioner body decreases, thereby reducing the efficiency of the refrigeration cycle.

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