JPS609667Y2 - Freezer compartment drainage system - Google Patents

Description

[Detailed Description of the Invention] The present invention has a drainage hole in the bottom wall of a cooling box body equipped with a refrigerant passage and a defrosting heater pipe, and an elastic seal is attached to the periphery of the drainage hole on the lower surface of the bottom wall. In a freezing room equipped with a drain pipe with a flange screwed through a plate, the drain pipe and the drain hole are heated by the heat of the defrosting heater pie, thereby omitting the drain hole heater and also heating the drain hole. To provide a structure in which the drain pipe can be fixed to the peripheral edge of the drain hole to allow the pipe to be fixed to the periphery of the drain hole.

Next, an embodiment of the present invention will be explained based on the drawings.

Reference numeral 1 refers to a refrigerator in which a freezer compartment 2 and a refrigerator compartment 3 are partitioned by an insulating partition wall IA, and the freezer compartment 2 has a cooling box body 4 whose inner box is made of metal, with refrigerant passages formed over the outer surfaces of the top, back, and bottom surfaces. The refrigerant pipe 5 is arranged in a meandering manner, and a defrosting heater vibro having a built-in electric heater is fixed with adhesive-coated aluminum foil 7 so as to surround the refrigerant pipe 5.

Reference numeral 8 denotes a drainage hole formed in the bottom wall of the cooling box body 4, and the periphery thereof forms a seat push portion 9 facing downward.

Reference numeral 10 designates an annular elastic seal plate having a hole 11 in the center thereof communicating with the drain hole 8 and abutting against the periphery of the drain hole 8 on the lower surface of the bottom wall of the cooling box body 4 .

The heater vibro has a bent part 6A along the circumference of the drain hole 8 outside the seal plate 10 in a part thereof, and this bent part 6A
goes around the stepped portion around the seat push portion 9.

Reference numeral 12 designates a drainage pipe, which has a flange 13 at its upper end.The flange 13 has a heater support part 14 on its upper surface that holds part or all of the bent portion 6A of the heater pipe. When the seal plate 10 is screwed 17 onto the seat pusher 9 through the screws 10, the seal plate 10 is compressed, and the bent portion 6A is pressed and supported by the heater support 14 against the bottom wall of the cooling box body 4.

Due to this support, the heater vibro generates heat during the defrosting operation, thereby heating the drain hole 8 and the drain pipe 12 through the collar 13, and thaws the ice in the upper part of the drain pipe 12 and inside the drain hole 8.

15 is a cooler provided in the refrigerator compartment 3, and 16 is a dew tray that receives the defrosting water from the cooler 15 and the defrosting water from the drain pipe 12 and drains it to the outside of the refrigerator.

The present invention may be applied to a so-called freezer, which is dedicated to a freezing room.

As described above, in the present invention, the defrosting heater pipe has a bent part outside the seal plate and along the periphery of the drain hole, and the collar of the drain pipe is connected to the flange of the heater pipe. Since the heater support part is provided to hold the bent part and sandwich the heater pipe between the bottom wall of the cooling box body, the bent part of the defrosting heater pipe is secured by the seal plate. Since the drainage hole can be pressed against the cooling box body at the peripheral edge of the drainage hole without causing rust due to the intrusion of drainage water, the drainage hole portion can be sufficiently heated, and the heater pipe can be heated through the collar of the drainage pipe. The heat is transferred to the drain pipe and can sufficiently heat the upper part of the drain pipe, eliminating the need for a separate heater for this part.

That is, although most of the freezing occurs in the drain hole and the upper part of the drain pipe, these parts can be sufficiently heated and the freezing can be sufficiently removed.

In addition, in this invention, the brim of the drain pipe supports the heater pipe part around the drain hole, so there is no need to provide a separate heater pipe support, which has the effect of reducing the number of parts and fixing the heater pipe in a predetermined position. .

[Brief explanation of drawings]

Each figure shows an embodiment of the present invention, and FIG. 1 is a longitudinal sectional side view of the refrigerator, FIG. 2 is a bottom perspective view of the cooling box, and FIG. 3 is a longitudinal sectional side view of the drain hole portion. 2...Freezing room, 4...Cooling box body, 5.
... Refrigerant passage, 6 ... Defrosting heater pipe, 6A ... Bend part, butt ... Drain hole, 1
0...Elastic seal plate, 12...Drainage pipe, 13...Brim, 14...Heater support portion.

Claims (1)

[Scope of utility model registration request] A metal cooling box body equipped with a refrigerant passage and a defrosting heater pipe has a drainage hole in the bottom wall, and a flange is screwed to the periphery of the drainage hole through an elastic seal plate on the lower surface of the bottom wall. In the freezer compartment, the heater pipe has a part thereof bent along the circumference of the drain hole outside the seal plate, and the collar of the drain pipe is connected to the heater pipe. A drainage device for a freezer compartment, comprising a heater support portion that holds a bent portion of a pipe and clamps the heater pipe between the bottom wall of the cooling box body.