Evaporator

Abstract

The invention discloses an evaporator. The evaporator comprises an inlet pipe, an outlet pipe, spacers, an upper water chamber, fins and flat tubes, side plates, end plates and a lower water chamber. The side plates are installed at the left ends and the right ends of the fins and flat tubes. The end plates are installed at the upper ends and the lower ends of the fins and flat tubes. The upper water chamber is installed on the upper portions of the end plates on the upper side. The lower water chamber is installed on the lower portions of the end plates on the lower side. The inlet pipe and the outlet pipe are arranged at one end of the upper water chamber. The inside of the upper water chamber and the inside of the lower water chamber are divided into four cavities by partition plates and the spacers. Each cavity is internally provided with a flow equalizing plate. Large grooves or flow equalizing holes are formed in each flow equalizing plate. According to the evaporator, the flow equalizing structure is added, distribution of refrigerating fluid in the water chambers can be adjusted, the refrigerating fluid is evenly distributed in a core body, flow of the refrigerating fluid passing through the flat tubes is balanced, and the heat exchange efficiency can be improved by about 10%. Temperature distribution on the surface of the core body is optimized and improved, so that the temperature difference of all air outlets of an air-conditioner is reduced, and comfort level experience of passengers is improved.

Description

technical field [0001] The invention relates to the technical field of automobile air-conditioning systems, in particular to an evaporator. Background technique [0002] At present, there are three common structural forms of evaporators for automotive air conditioners: tube-sheet type, tube-belt type, and stacked type. Among them, the stacked type evaporator is more popular and more advanced in technology. It is mainly composed of two aluminum plates punched into complex shapes and stacked together to form a plywood to form a refrigerant channel. A wave-shaped cooling fin with a window structure is placed between each two plywood, and then stacked layer by layer. Since the processing method of the aluminum plate is punching, the increase in size is limited, the heat exchange condition cannot be met, and the application range is limited; and the punching process is difficult and costly. [0003] The 38mm parallel flow evaporator has become the mainstream type of heat exchang...

AI Technical Summary

Problems solved by technology

However, due to the uneven distribution of the refrigerant in the water chamber and the flat tube, the heat exchange efficiency cannot be maximized.

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