Evaporator with cooling function

Abstract

PROBLEM TO BE SOLVED: To provide an evaporator with a cold storage function that can suppress cooling performance from decreasing in normal cooling and then extend a cold release time.SOLUTION: A heat exchange core part 4 of an evaporator with a cold storage function comprises an arrangement part 17 where an outer fin 16, a second refrigerant circulation pipe 12B, a cold storage material container 15, a first refrigerant circulation pipe 12A, a cold storage material container 15, a second refrigerant circulation pipe 12B, and an outer fin 16 are arranged in this order. At the arrangement part 17, an area of contact between the cold storage material container 15 and the second refrigerant circulation pipe 12B is equal to or less than an area of contact between the cold storage material container 15 and one side of the first refrigerant circulation pipe 12A, for example, 30-80%.SELECTED DRAWING: Figure 2

Description

technical field [0001] The present invention relates to an evaporator with a cool storage function used in an on-vehicle air conditioner of a vehicle that temporarily stops an engine as a driving source of a compressor when the vehicle is stopped. [0002] In this specification and claims, the up and down, left and right ( figure 1 up and down, left and right) to up and down, left and right. Background technique [0003] In recent years, for the purpose of environmental protection, improvement of fuel efficiency of automobiles, and the like, automobiles which automatically stop the engine while waiting for traffic lights or the like have been proposed. [0004] However, in an ordinary vehicle-mounted air conditioner, when the engine is stopped, the compressor that uses the engine as a driving source stops, so that the refrigerant cannot be supplied to the evaporator, resulting in a problem that the cooling capacity drops sharply. [0005] Therefore, in order to solve such ...

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Problems solved by technology

[0008] In addition, in the evaporator with cold storage function described in Patent Document 1, in order to prolong the release time of cold energy when the compressor is stopped, the number of cold storage material containers is increased to increase the amount of cold storage material, or the area of ​​all external heat sinks is enlarged. It is effective to reduce the heat transfer area of ​​the outer fins by increasing the pitch of the fins, but in these cases, the cooling performance during normal cooling may be reduced

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