JPH0228071B2 - SHOOKEESUNOJOSOSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of the Invention The present invention relates to a defrosting device for a show case in which a humidifying water tray is arranged in a cold air circulation path.

(b) Background of the Invention In recent years, sales of Western confectionery such as cakes have been increasing, and the demand for refrigerated cases for displaying them has been rapidly increasing. However, when Western confectionery is stored in the refrigerator, it dries out, causing the sponge to become dry or the cream to become hard, resulting in a loss of flavor. For this reason, conventional cases have been proposed in which water is sprayed by water pipes into the cold air circulation path, but when the interior of the case is humidified, frost tends to form on the cooler, requiring frequent defrosting.

(c) Object of the Invention In light of the above, the present invention provides a case that reduces defrosting time by effectively utilizing humidifying water for defrosting.

(d) Embodiments of the invention FIG. 1 is a perspective view of a show case according to the present invention;
FIG. 2 shows a side sectional view, in which a transparent front wall 6, a pair of side walls 7, 8, and a ceiling wall 9 are arranged on a base 5, respectively, and sliding doors 10, 11 are provided at the rear. A display shelf 12 mounted on the side walls 7 and 8 is arranged inside the warehouse. A cooler 1 is arranged on a substrate 13 inside the base 5, and a cooling fan 16 is installed between the cooler 1 and a suction port 15 formed between the front wall 6 and the bottom plate 14 inside the refrigerator. Also, a discharge port 17 is provided between the bottom plate 14 inside the refrigerator and the doors 10 and 11.
is provided to form a cold air circulation path shown by the arrow. Further, a water tray 2 is arranged above the substrate 13 on the rear side, that is, on the leeward side of the cooler 1, and the water tray 2 is supplied with water through a water conduit 3 controlled by a solenoid valve 18. The water tray 2 is also equipped with a humidifying heater 19, and the amount of water evaporated is adjusted by a thermostat (not shown). A drain outlet 4 is provided in front of the cooler 1, that is, on the windward side, so that water overflowing from the water tray 2 flows into the drain outlet 4 through a flow channel formed by tilting the base plate 13. It's summery.

During normal cooling with the above configuration, the refrigerator interior is cooled by driving the refrigeration device disposed inside the base 5 to form the above-described cold air circulation path. Although the relative humidity inside the refrigerator decreases due to cooling, the water tray 2
The water is heated and evaporated by the humidifying heater 19, mixed by the wind from the cooling fan 16, and low-temperature, high-humidity air is blown out from the discharge port 17, thereby preventing the inside of the refrigerator from drying out. At this time, the moisture heated and evaporated by the humidifying heater 19 has only a slight effect on the cooled air, and does not impair the cooling effect. The humidity inside the refrigerator can be increased by raising the temperature of the humidifying heater 19 and increasing the amount of evaporation.

During defrosting, the above-mentioned refrigeration system is stopped, and the solenoid valve 18 is opened to supply water from the water conduit 3 to the water tray 2. At this time, in order to supply enough water to the water pipe 3 so that the water overflows from the water tray 2, the water flowing out from the water tray 2 is transmitted through the substrate 13 to the cooler 1.
It is guided to the drain outlet 4 while passing under the drain. Therefore, since the water flows while contacting the fins of the cooler 1, effective defrosting is achieved using the sensible heat and latent heat of the water. After the defrosting is completed, the refrigeration device is driven again and the cooling operation is performed while humidifying the water remaining in the water tray 2. Solenoid valve 18
A defrosting timer may be used to open the defrosting unit for a certain period of time at predetermined time intervals, or a timer that is started by an arbitrary defrosting command may be used to open the defrosting unit for a certain period of time.

(e) Effects According to the present invention, defrosting can be carried out efficiently and in a short time because the sensible heat and latent heat of the water passing under the cooler are used. Therefore, in a case where defrosting must be performed frequently in order to humidify the inside of the refrigerator, the defrosting time can be shortened, which is effective. By applying the present invention to a device in which defrosting heaters and the like are installed in parallel, the heater capacity can be reduced. Furthermore, since the water for defrosting is used by overflowing the water tray for humidification, the structure is simplified.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a show case according to the present invention;
FIG. 2 is a side sectional view. 1...Cooler, 2...Water tray, 3...Water pipe, 4
...Drain outlet.

Claims (1)

[Claims] 1. A cooler located on the inclined part and arranged in a cold air passageway formed between a bottom plate inside the refrigerator and a substrate having an inclined part, together with a cooling fan that circulates cold air inside the refrigerator, and arranged in the cold air passageway. a water tray located at a high part of the sloping portion on the leeward side of the cooler; a water pipe provided with a solenoid valve that is opened during defrosting and supplying water so that the water tray overflows during defrosting; A flow channel is formed on the inclined part of the substrate so that the water flowing out from the dish passes through while contacting the lower part of the cooler, and a flow channel is formed at the lowest part of the substrate which is the lowest part of the flow channel, A defrosting device for the case that consists of a drain outlet located on the windward side of the cooler.