Accumulator of air conditioner

Abstract

The present invention provides an accumulator of an air conditioner, in which a coolant outlet pipe is a dual pipe with an internal pipe and an external pipe, a return cap is combined to the lower end of the dual pipe, and a gas coolant flows from the upper portion inside a tank through a gas coolant inlet between the internal pipe and the external pipe, turns into the internal pipe at the return cap, and then continues flowing through the gas coolant outlet to an outer pipe. Therefore, the accumulator can be manufactured from a small tank, so that it can be easily mounted in a small space with high liquid-vapor separating performance and pressure resistance.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an accumulator of an air conditioner, and more particularly, to an accumulator of an air conditioner that can be formed of a small tank, so that it can be easily mounted in a small space and is improved in vapor-liquid separating performance with high pressure resistance.[0003]2. Description of the Related Art[0004]In general, in an air conditioner for air-conditioning of a vehicle, an air-conditioning cycle is formed by a coolant circulating through the compressor, condenser, throttle valve, and evaporator, and an air-conditioning cycle with a coolant that is compressed at a supercritical pressure above a critical pressure by the compressor is called a supercritical air-conditioning cycle. In general, in supercritical air-conditioning cycles, a coolant does not change phase in heat-discharging process into the atmosphere; therefore, a heat discharger for this process is called a gas coo...

AI Technical Summary

Benefits of technology

[0012]Accordingly, in order to overcome the above problems, an object of the present invention is to provide an accumulator of an air conditioner that can be formed of a small tank, so that it can be easily mounted in a small space and is improved in vapor-liquid separating performance with high pressure resistance.

Problems solved by technology

In these supercritical air-conditioning cycles, because it is difficult for the coolant discharged out of the evaporator to form superheat due to the characteristics of the coolant, liquid coolant flows into the compressor, which causes liquid back and damage to the condenser.

Therefore, a predetermined-sized space should be ensured in the engine room of a vehicle to mount the accumulator in the vehicle, which causes a problem when mounting in a small space.

Further, it was difficult to achieve high efficiency in separation, because a fluid (coolant) composed of oil, a liquid coolant, and a gas coolant was separated by only depending on the specific gravity.

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