An air conditioner, a dry shell-and-tube evaporator and its refrigerant distributor assembly

Abstract

The invention relates to a refrigerant distributor assembly of a dry shell-and-tube evaporator, comprising: a tube plate; a cylinder connected to the tube plate and separating the tube plate into a refrigerant inlet area and a refrigerant outlet area; fixedly connected to the cylinder body The liquid equalizing plate set on the top and close to the tube plate; it is fixedly connected to the cylinder body and constitutes the gas equalizing plate of the liquid chamber with the liquid equalizing plate, and the liquid inlet pipe leading to the liquid chamber is also fixedly connected to the gas equalizing plate; The cover plate connected with the tube plate, the cover plate and the gas equalization plate form an air chamber, and the air inlet pipe leading to the air chamber is arranged on the cover plate, and the liquid inlet pipe passes through and is exposed on the cover plate; the gas-liquid separator, the gas-liquid The gas outlet of the separator is connected with the inlet pipe, and the liquid outlet is connected with the liquid inlet pipe. This kind of refrigerant distributor assembly realizes that the gas-liquid two-phase refrigerant is evenly distributed to the tube sheet, and fully exerts the heat exchange performance of the evaporator. The invention also discloses a dry shell-and-tube evaporator using the refrigerant distributor assembly, and an air conditioner using the dry shell-and-tube evaporator.

Description

technical field [0001] The invention relates to the technical field of air conditioner manufacturing, in particular to an air conditioner, a dry shell-and-tube evaporator and a refrigerant distributor assembly thereof. Background technique [0002] In an air conditioning unit using a dry shell-and-tube evaporator, the high-pressure, high-temperature refrigerant liquid flowing out of the condenser becomes a gas-liquid two-phase mixture after throttling. In order to fully utilize the heat exchange tubes arranged in the evaporator tube box To make full use of the heat exchange area, the gas-liquid two-phase refrigerant should be evenly distributed to each heat exchange tube as much as possible to avoid the situation that there is only liquid refrigerant in one part of the tubes and only gaseous refrigerant in the other part of the tube. [0003] In order to achieve this purpose, at present, a refrigerant distributor is generally installed before the evaporator, such as figure ...

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Problems solved by technology

[0004] However, limited by the layout of the whole machine, the inlet of the refrigerant is often connected to the elbow. The two-phase refrigerant has already undergone gas-liquid separation after flowing through the elbow, and then hits the equalizer plate through the refrigerant inlet pipe due to gravity. Separation occurs again, which makes the distribution of the two-phase refrigerant between the heat exchange tubes less uniform

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