Evaporator with cool storage function

Abstract

An evaporator (1) with a cool storage function includes a plurality of flat refrigerant flow tubes (13) spaced apart from one another, and a plurality of flat cool storage material containers (15) each of which contains a cool storage material and is disposed on one side of the corresponding refrigerant flow tube (13), and is brazed to the corresponding refrigerant flow tube (13). The cool storage material container includes a container body (21) brazed to the corresponding refrigerant flow tube (13), and an internal-volume-increasing portion (22) which extends downstream from the container body, which projects downstream from the refrigerant flow tube (13), and which is greater in dimension in a thickness direction than the container body (21). An inner fin (23) extending from the container body (21) to the internal-volume-increasing portion (22) is disposed in the cool storage material container (15).

Description

technical field [0001] The present invention relates to an evaporator with a cool storage function used in an automotive air conditioner for a vehicle that temporarily stops an engine that is a driving source of a compressor when the vehicle is stopped. Background technique [0002] In this specification and claims, it is set to figure 1 and figure 2 The up and down of is up and down. [0003] In recent years, for the purpose of environmental protection and / or improvement of fuel economy of automobiles, automobiles which automatically stop the engine when stopping for a signal or the like have been proposed. [0004] However, in a normal car air conditioner, when the engine is stopped, the compressor driven by the engine stops, so that the refrigerant cannot be supplied to the evaporator, and the cooling capacity drops sharply. [0005] Therefore, in order to solve such a problem, it is conceivable to provide the evaporator with a cold storage function, and to cool the v...

AI Technical Summary

Problems solved by technology

[0008] However, in the evaporator with cool storage function described in the above publication, if the amount of cool storage material enclosed in the cool storage material container is to be increased based on the purpose of improving the cool storage function, it is necessary to lengthen the cool storage material container and the refrigerant flow pipe, and Increase the height of the container as a dimension in the thickness direction of the cool storage material container as a whole

However, if the length of the cold storage material container and the refrigerant flow pipe is lengthened, there will be problems such as that the heat exchange core of the evaporator is enlarged, the weight becomes larger, or the space-saving property is impaired.

In addition, if the container height of the cold storage material container is increased as a whole, it will take time to cool the cold storage material, and the performance from the start of the cooling operation to the cooling down will be reduced.

Moreover, if the container height of the cold storage material container is increased without changing the size of the heat exchange core of the evaporator with cold storage function, the ventilation area of ​​the ventilation gap will decrease, the ventilation resistance will increase, and the cooling performance of the evaporator will decrease.

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