JPS641361U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an evaporator according to an embodiment of this invention. Figures 2, 3, and 4 are block diagrams of evaporators according to other embodiments of this invention, Figure 5 is a block diagram of a conventional evaporator, and Figure 6 is a diagram of frost formation in a conventional evaporator. An explanatory diagram, Fig. 7 is an explanatory diagram of the remaining ice situation in a conventional evaporator, Fig. 8 is a configuration diagram of another conventional evaporator, and Fig. 9
Figure 10 is an explanatory diagram of the frosting situation of other conventional evaporators.
The figure is an explanatory diagram of the remaining ice situation in another conventional evaporator. In the figure, 1c, 1d, 12a, 12b are evaporators, 6g, 6h, 6i, 6j, 13a, 13b
, 13c, 13d, 13e, and 13f are refrigerant flow paths. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] It consists of a large number of parallel fins and multiple stages and rows of pipes that pass through the fins and allow refrigerant to flow in sequence. During defrosting, hot gas flows into the multiple refrigerant flow paths to perform defrosting. In the evaporator, during cooling operation and defrosting, refrigerant flows into the pipe at the top of the evaporator, and after flowing through all the refrigerant passages in the top row,
A refrigerant distribution path configured to flow into the next lower stage;
An evaporator characterized by having a refrigerant flow path in which the refrigerant flows through a pipe at the lowest stage of the evaporator and flows into the next upper stage after the refrigerant flows through all the refrigerant passages in the lowest stage row.