JPS6428779U

JPS6428779U -

Info

Publication number: JPS6428779U
Application number: JP12285287U
Authority: JP
Priority date: 1987-08-10
Filing date: 1987-08-10
Publication date: 1989-02-20

Description

[Brief explanation of drawings]

第１図はこの考案による冷凍装置の一実施例を
示す斜面図、第２図ないし第４図はそれぞれこの
考案による冷凍機の配管図である。４……開口部、５ａ……内層冷気流、５ｂ……
外層保護気流、６ａ，６ｂ……エアー吸込口、７
ａ，７ｂ……エアー吹出口、８ａ，８ｂ……通風
路、９，１０……蒸発器、１２……圧縮器、１３
……水冷式凝縮機、１５……圧力形制水弁、１８
，２１……膨張弁（減圧器）。 FIG. 1 is a perspective view showing an embodiment of the refrigeration system according to this invention, and FIGS. 2 to 4 are piping diagrams of the refrigeration machine according to this invention. 4...Opening, 5a...Inner layer cold air flow, 5b...
Outer layer protective airflow, 6a, 6b...Air suction port, 7
a, 7b... Air outlet, 8a, 8b... Ventilation path, 9, 10... Evaporator, 12... Compressor, 13
...Water-cooled condenser, 15...Pressure type water control valve, 18
, 21... Expansion valve (pressure reducer).

Claims

[Scope of utility model registration request]

In a refrigeration system having an air curtain at an opening, a plurality of evaporators are arranged in one ventilation passage from an air inlet to an air outlet of the air curtain, and a compressor and a water-cooled condenser are connected in series. A control valve is provided to control the amount of cooling water supplied to the condenser, and during normal operation, with the control valve open, the compressor and condenser are connected to the pressure reducer and the plurality of evaporators in parallel. On the other hand, when defrosting any of the evaporators, the refrigerant flows directly from the compressor and condenser to the evaporator to be defrosted with the control valve closed. 1. A refrigeration system comprising: a refrigerant path switching means for forming a refrigerant path from which the refrigerant passes through a pressure reducer and another evaporator that does not defrost, and then returns to the compressor.