Spraying type evaporator

Abstract

The invention discloses a spraying type evaporator. The spraying type evaporator comprises a heat exchanger and a gas-liquid separator. The gas-liquid separator comprises a shell, a liquid inlet connection pipe extending into the shell, a gas return opening connection pipe extending into the shell, and a connector base which is arranged at the bottom of the shell and connected with a connection pipe. The inlet of the liquid inlet connection pipe is connected with a refrigerant outlet of a throttling mechanism of the previous stage. A partition plate is arranged between the liquid inlet connection pipe and the gas return opening connection pipe. The outlet of the liquid inlet connection pipe and the inlet of the gas return opening connection pipe are separated from each other through the partition plate. The gas-liquid separator is arranged, gas-liquid separation is conducted on throttled refrigerant, it is ensured that the refrigerant entering the heat exchanger is in a pure liquid state, liquid distribution of a liquid distributor can be more uniform, and therefore the heat exchange efficiency of the whole heat exchanger is improved, the heat conduction temperature difference is reduced, the energy efficiency ratio of running of a refrigerating unit is increased, and the aim of saving energy is achieved.

Description

technical field [0001] The invention relates to the fields of refrigeration and air conditioning, and more specifically, to a spray evaporator. Background technique [0002] At present, in the field of refrigeration and air conditioning, dry shell-and-tube evaporators are generally used as the main heat exchange equipment in large-scale central air-conditioning and refrigeration hosts. Compared with flooded evaporators, dry evaporators have a lower Cost, and the refrigerating unit using the dry evaporator has a simple structure and simple control, so the dry evaporator is widely used. [0003] However, as the society has higher and higher requirements for energy conservation and environmental protection, how to improve the energy efficiency ratio of the refrigeration unit becomes particularly important, and the heat exchange efficiency of the evaporator directly determines the energy efficiency ratio of the refrigeration unit, but the dry evaporator Some of its own characte...

AI Technical Summary

Problems solved by technology

If you want to ensure the heat transfer efficiency of the spray evaporator, one of the technical details that must be paid attention to is the reasonable design of the built-in liquid separator. Ensuring uniform liquid distribution is the key to the overall efficiency of the evaporator, but often the liquid separator Due to problems such as design, processing technology and unit installation level, it is difficult to achieve a very uniform liquid separation, and even if these problems are solved, because the liquid refrigerant passes through the throttling mechanism, part of the flash gas will be generated. The refrigerant entering the liquid separator is in a gas-liquid mixed state, and the distribution in the gas-liquid mixed state is more difficult to achieve uniformity, especially when the unit load fluctuates during loading and unloading processes or changes in operating conditions. The distribution effect is even more unsatisfactory, resulting in a significant reduction in the operating efficiency of the entire evaporator

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