JPS5912539Y2 - refrigerator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved structure of a refrigerator, and in particular, is provided with a dew pan for receiving dew water such as defrosting water from an evaporator.

Conventionally, this type of refrigerator receives and collects the dew water that defrosts the evaporator in the dew pan and discharges it outside the main body, but if the cooling operation is resumed before the dew water is completely drained from the dew pan to the outside of the main body, Dew water freezes in the dew pan.

During the cooling operation, the temperature of the dew pan in the cooling state does not rise rapidly even when the cooling operation is stopped. Therefore, the cooling operation is restarted without the frozen ice layer melting, and the ice layer grows to a certain extent and eventually the dew water is removed. It was becoming overflowing.

Therefore, a method has been adopted to prevent the above-mentioned drawbacks by installing a dedicated heater at the bottom of the dew pan, but this method becomes expensive due to the increase in the number of parts and consumes a large amount of power, which is preferable from the standpoint of energy conservation. There wasn't.

This proposal was developed in view of these points, and the figure will be explained below.

Reference numeral 1 denotes a refrigerator body composed of an inner box 2, an outer box 3, and a heat insulating material 4 filled with foam between the two boxes 2 and 3, which is divided into two upper and lower chambers 6 and 7 by a partition wall 5 as necessary. Both chambers 6 and 7 are cooled by a freezing evaporator 8 and a refrigeration evaporator 9, respectively, which form a refrigerant cycle.

The refrigerator compartment 7, which is the lower chamber, has the evaporator 9 suspended and supported on the ceiling wall 7A, and the defrosting water of the evaporator 9 and the like are provided below the lower end of the evaporator 9, which is disposed at a low slope at the back. , a dew pan 10 that receives dew water from the freezing evaporator 8, etc. is attached to the back wall 2 of the inner box 2.
Support equipment is installed on the front of A.

The dew pan 10 is made of resin or the like and is shaped like a container having walls 10A, IOB, IOC, and IOD that are open on the top surface, and a bottom wall 10E that is sloped low to one side. , a drain port 11 is formed at its lower part to connect a discharge pipe (not shown) extending outside the main body 1, and a rear wall 10D is formed.
The lower part of the inner box 2 is spaced apart from the back wall 2A of the inner box 2 to form a hot air passage 12, and the lower part of the inner box 2 is bulged forward. One or more through holes 13 are formed at the upper part.

Reference numeral 14 denotes a water receiving plate having an approximately square cross-section and having an engaging side 14A that is depressed into the dew receiving tray 10 and bent at one side edge to engage with the rear wall 10D, and is made of aluminum or the like. It is made of a thermally conductive material, and is shaped so that at least the opposite side 14B is spaced from the rear wall 10D of the dew pan 10, and is inclined so as to guide the received dew water toward the drain port 11 side. It has an imposing appearance.

On the outer surface of the back wall 2A of the inner box 2, an electric heater 15 for heating the inside of the refrigerator compartment 7 to compensate for and prevent overcooling is disposed in close opposition to the dew pan 10. Electricity is applied and heat is generated.

16. 17 is a refrigerant compressor and a condenser that together with the evaporators 8, 9, etc. form a refrigerant cycle.

Both chambers 6 and 7 have door bodies 18 and 1 whose front openings can be opened and closed freely.
9 are respectively blocked.

The present plan is structured as described above, so when the cooling operation is stopped and defrosting is in progress, the electric heater is also energized and generates heat, which warms the air near the rear wall of the dew pan. Warm air flows into the dew pan from the through hole.

Therefore, the ice layer in the dew pan is melted and the temperature of the dew water is increased to prevent freezing when cooling is resumed.

Moreover, since the water receiving plate is made of a material with good thermal conductivity, it is heated in a short time and the ice layer frozen on the upper surface can be quickly melted.

Furthermore, there is no need to prepare a special heater for heating the dew tray and water tray, which reduces the number of parts and reduces maintenance costs.

[Brief explanation of drawings]

FIG. 1 is a schematic longitudinal cross-sectional view of the refrigerator of the present invention, FIG. 2 is a cross-sectional view of circle A in FIG. 1, and FIG. 3 is an exploded perspective view of the same essential parts. 10... Dew pan, 12... Warm air path, 13... Through hole.

Claims (1)

[Scope of utility model registration request] A container-shaped dew pan with an opening on the top surface is supported on the front surface of the back wall facing the refrigerator compartment, and the dew pan has a rear wall spaced apart from the back wall, and is placed above the soil surface of the bottom wall. furthermore, a water receiving plate made of a thermally conductive material is recessed in the dew receiving plate at a distance from the rear wall, and A refrigerator characterized in that an electric heater for heating the refrigerator compartment is disposed on the outer surface of the back wall so as to be close to and opposite to the dew pan.