Refrigerant filling machine front liquid storage device with cooling function

Abstract

The invention discloses a refrigerant filling machine front liquid storage device with a cooling function. The device comprises a refrigerant feeding steel bottle, a refrigerant filling machine, a chassis, a liquid storage tank, an evaporator, a capillary tube, a filter, a condenser and a compressor, wherein the refrigerant feeding steel bottle is connected with a refrigerant inlet valve at the bottom of the liquid storage tank through a delivery pipe; the liquid storage tank is arranged on the chassis; the evaporator is arranged in the liquid storage tank; one end of the evaporator is connected with the capillary tube and the other end of the evaporator is connected with a low-pressure port of the compressor; the capillary tube is connected with the filter; the filter is connected with the condenser; the condenser is connected with a high-pressure port of the compressor; and a refrigerant outlet valve at the bottom of the liquid storage tank is connected with the refrigerant filling machine. The invention has the characteristics that: the device is simple and intuitive in structure, the utilization rate of refrigerants in the steel bottle can be improved, and the production efficiency and product quality are improved.

Description

technical field [0001] The invention relates to a pre-liquid storage device of a refrigerant charging machine with a cooling function. Background technique [0002] At present, refrigeration production lines use refrigerant filling machines to fill refrigerants into air conditioners, refrigerators and other refrigeration equipment, and the refrigerant supply containers are mostly special steel cylinders with different capacities of tens of kilograms or hundreds of kilograms. The steel cylinders of different specifications are connected to the inlet of the refrigerant charging machine through the transfer pipe, and then the refrigerant in the steel cylinder is sucked out by the booster pump of the refrigerant charging machine, and the refrigerant is increased to a certain pressure to provide the filling machine System metering and charging. [0003] At present, on the production line, the typical connection between the refrigerant supply cylinder and the refrigerant charging...

AI Technical Summary

Problems solved by technology

However, in actual production, it is often encountered that the refrigerant in the cylinder cannot be delivered normally, and it cannot be clearly reflected when it is used up.

Because the pressure of the liquid and gaseous refrigerants is the same, the capacity of the refrigerant inside the cylinder cannot be accurately judged by pressure detection and other means.

Even if the liquid refrigerant in the steel cylinder has been used up, it is difficult to determine the output in a gaseous state. If the steel cylinder is not replaced in time, it will inevitably cause insufficient supply of refrigerant in the liquid filling machine, which will affect the production rhythm. It is easy to mix in refrigerant saturated gas that cannot be fully compressed, making the amount of liquid added inaccurate and affecting product quality; if the refrigerant cylinder is replaced early, the refrigerant in the cylinder will not be fully used, resulting in waste of production costs

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