Low-temperature refrigerant liquid spraying device and automatic liquid spraying and supplementing method

Abstract

The invention discloses a low-temperature refrigerant liquid spraying device and an automatic liquid spraying and supplementing method. The device comprises a vacuum liquid spraying container internally filled with a refrigerant, a liquid spraying pipe, an air pump and a liquid spraying pressurizing pipe. A port in one end of the liquid spraying pipe stretches into the refrigerant in the vacuum liquid spraying container, and a port in the other end of the liquid spraying pipe faces a target to be subjected to liquid spraying. One end of the liquid spraying pressurizing pipe is connected with the air pump, and the other end of the liquid spraying pressurizing pipe stretches into the refrigerant in the vacuum liquid spraying container. Air pressure power is provided by the air pump to press the liquid-state low-temperature refrigerant into the liquid spraying pipe, then the liquid-state low-temperature refrigerant is sprayed out, the air pressure of the air pump is controlled to be kept constant in the whole using process, the spraying speed of the refrigerant is kept constant all the time, and therefore the liquid spraying speed can be changed by adjusting the power of the air pump.

Description

technical field [0001] The invention relates to liquid spraying control of low-temperature refrigerant, in particular to a low-temperature refrigerant liquid spraying device and an automatic liquid spraying and liquid replenishment method. Background technique [0002] Refrigerant, also known as refrigerant, is a working substance that circulates continuously in the refrigeration system and achieves refrigeration through its own state changes. It has excellent thermodynamic properties, such as low boiling point, small fluid specific heat capacity, low adiabatic index, and large heating capacity per unit volume. There are many types of refrigerants, including liquid ammonia, liquid nitrogen, dry ice, and many other types of organic matter. Refrigerants can be used in many areas of daily life, including: refrigerators, freezers, water dispensers, automobile air conditioners, central air conditioners, dehumidifiers, cold storage, commercial refrigeration, ice water machines, i...

AI Technical Summary

Problems solved by technology

The advantage of this low-temperature refrigerant spraying device is that it is simple in principle and easy to operate, but since the liquid spraying power of this device comes from the generated air pressure inside the liquid spraying container, this self-pressurization characteristic will produce a series of Problems: First, the generated air pressure increases continuously with the working time of the liquid spray container, which will cause the flow rate of the low-temperature refrigerant sprayed from the liquid spray pipe to continue to rise and cannot keep the liquid spray speed stable; secondly, in order to maintain the liquid spray container The low-temperature refrigerant in the liquid spray container has to be frequently replaced or manually replenished due to the loss of a large amount of low-temperature refrigerant due to the internal air pressure, which reduces the use efficiency; finally, due to the self-pressurization characteristic of the generated air pressure, the liquid spray container has to introduce a limit Pressure valve, the pressure threshold in the liquid spray container is controlled by the pressure limiting valve to ensure the safety of users, which greatly increases the production cost of the liquid spray container

It is because of these shortcomings that the low-temperature refrigerant liquid spraying devices currently on the market are usually only used as refrigerant storage containers rather than final use containers.

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