Refrigerator

Abstract

The invention discloses a refrigerator. The refrigerator comprises a storage chamber and an evaporator chamber located on the lower side of the interior of the storage chamber, wherein the evaporatorchamber comprises an evaporator and a heater located on the lower side of the evaporator; a water catcher is formed in the bottom of the evaporator chamber; the evaporator comprises a coil pipe and aplurality of rows of fins arranged on the coil pipe in a sleeving mode; the plurality of rows of fins are arranged into a plurality of columns of fins in the vertical direction; inclined water guide parts are arranged on the lower part of the bottommost row of fins of each column of fins; the heater is arranged below the water guide parts; and defrosting water generated on the evaporator fins directly flows into the water catcher along the lower ends of the water guide parts without passing through the heater. According to the refrigerator, the water guide parts inclining downwards are arranged at the bottoms of the evaporator fins, and the defrosting water is guided to one side from the water guide parts and drips into the water catcher, so that abnormal sounds generated when the defrosting water drips onto heating wires of the heater are avoided; and the overall structure of the refrigerator is simple, other shielding components do not need to be added between the evaporator and theheater, and the heat exchange efficiency and defrosting efficiency of the evaporator cannot be affected.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator. Background technique [0002] The defrosting principle of the refrigerator: the finned evaporator is fixed on the refrigerated liner, and the refrigerator cools so that frost forms on the finned evaporator. The frost water drops into the lower defrosting water receiving tank, flows into the evaporating pan outside the box through the drain pipe, and then passes through the hot pipeline in the evaporating pan to speed up the evaporation of the defrosting water. During the defrosting process, the temperature of the heating wire can reach over 300°C, and when the defrosting water or ice cubes drop onto the heating wire, they will be vaporized rapidly, producing a "squeaky" noise. [0003] There are two methods currently used to eliminate abnormal noise during defrosting, one is to shield the heating wire, and the other is to use low temperature (not ...

AI Technical Summary

Problems solved by technology

The first type: a shielding plate is installed on the heating wire. In order to ensure the defrosting efficiency, there are long holes on the shielding plate to facilitate the circulation of heat and reduce the probability of defrosting water dripping on the heating wire; the second type: heating wire Aluminum tube heating wire is used, which is evenly distributed between the evaporator tube and the fins. The temperature of the heating wire during the defrosting period will not exceed 90°C; these two methods can reduce or avoid abnormal noise during the defrosting period, but the first method is difficult to install , the position and installation angle of the shielding plate are relatively high, which affects the heat exchange efficiency of the evaporator; in the second method, since the heating wire is far away from the defrosting water tank, in order to ensure the smooth discharge of the defrosting water, it is necessary to install it on the defrosting water tank. Increase the heating wire, and it takes a long time to defrost, so the defrosting efficiency of the whole machine is very low, which is not conducive to the freezing and fresh-keeping performance of the refrigerator

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