JPH076667U - Electric refrigerator - Google Patents

Abstract

(57) [Summary] [Purpose] The structure of the connection between the inner box and drain hose where urethane does not leak even if the urethane leak prevention material in the connection between the inner box and drain hose is eliminated. [Configuration] 21 is an inner box, a projecting portion 25 is provided on the back surface, a stepped recess 24 is formed in the projecting portion 25, and an insertion hole 26 is provided in the bottom surface of the stepped recess 24. . A drain hose 23 is formed with a stepped portion 27 so as to be internally provided in the stepped recess 24 and a tip portion 28 to be inserted into the inner box 21 through an insertion hole 26 of the recess. Reference numeral 22 denotes a heat insulating wall, which is formed by foaming and hardening the urethane resin filled between the inner box 21 and the outer box 20. Inner box 2
In order to improve the close contact between the drain hose 23 and the drain hose 23, a claw portion 29 for sandwiching the insertion hole provided in the recess is provided at the tip end portion 28 of the drain hose 23, and the protrusion 2 of the inner box is further provided.
A flared fin portion 30 is brought into contact with the outer peripheral portion of the drain hose 23 so as to be in close contact with the drain hose 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric refrigerator, and relates to a structure of a connection portion between an inner box and a drain hose.

[0002]

[Prior art]

 Conventionally, in a refrigerator in which frost generated in an evaporator installed in a refrigerator body is melted by a heater to be defrosted water, and the defrosted water is guided to the lower part of the body by a drain hose and stored in an evaporation container, The drain hose is arranged so as to pass through the inner case and pass between the inner case and the outer case to reach the lower part of the main body. FIG. 3 is a side sectional view showing a structure of a connecting portion between an inner box and a drain hose of a conventional electric refrigerator, but a urethane resin stock solution is prevented from leaking to a connecting portion between the inner box 31 and the drain hose 33. Therefore, the seal member 34 was attached. This is because a heat insulating wall 32 is formed by injecting a foamed urethane resin stock solution such as hard urethane foam between the inner box 31 and the outer box 20 and foaming and hardening the same inside the outer box 20 and the inner box 20. This is because even if there is a slight gap in the joint portion of 31, a large pressing force is applied due to the expansion and hardening of the urethane resin, and the unfoamed undiluted solution of the urethane resin may leak from the gap. However, the unit cost of the sealing material 34 is high and there is a problem that it takes a lot of time to attach it to the inner box 31.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of such a point, and is characterized by the structure of the inner box and the drain hose that can prevent the leakage of the urethane resin stock solution even if the sealing material attached to the connecting portion of the inner box and the drain hose is eliminated. It provides an electric refrigerator.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a protrusion at a predetermined position on the back surface of the inner box, forms a stepped recess in the protrusion, and forms an insertion hole in the bottom of the recess, while the recess is provided. A step portion corresponding to the recess is formed in the drain hose to be inserted into the inner box through the insertion hole, and a claw portion for sandwiching the insertion hole is provided and the outer peripheral portion is abutted against the protrusion provided on the inner box. Provide fins. In addition, the dimension between the claw portion that holds the insertion hole of the recess of the drain hose and the fin portion provided on the outer peripheral portion is the same as that of the upper surface of the corresponding protruding portion provided on the inner box and the concave portion formed on this protruding portion. The feature is that it is set slightly smaller than the dimension between the bottoms.

[0005]

[Action]

 With the above construction, in the electric refrigerator according to the present invention, the fin portion is provided on the outer peripheral portion of the drain hose so as to abut the protrusion portion provided on the back surface of the inner box, and the fin portion is provided on the concave portion formed on the protrusion portion. By providing a claw portion to be sandwiched in the insertion hole and forming the dimension between the fin portion and the claw portion slightly smaller than the dimension between the corresponding upper surface of the protruding portion and the bottom surface of the concave portion of the inner box, When the drain hose is attached to the inner box, the flare-shaped fin portion is attached in close contact with the protruding portion of the inner box, so that leakage of the urethane resin stock solution into the inner box can be prevented.

[0006]

【Example】

 Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical sectional view of an embodiment of the electric refrigerator of the present invention. In Fig. 1, a refrigerator 1 is provided with a freezer compartment 2, a refrigerator compartment 3 and a vegetable compartment 4 which are sequentially arranged from above by providing a partition wall 5, and each compartment is provided with a cool air outlet and a plurality of front doors. Covered with 6. A cooling chamber 7 is provided at the rear of the freezing chamber 2, and a fan, an evaporator 8 and a defrost heater 9 (not shown) are sequentially arranged in the chamber 7, and a drain hose having an open top at the bottom. Is provided. The drain hose 10 is arranged so as to pass through the inner box and pass between the inner box and the outer box and reach the lower part of the main body. The lower end of the drain hose is opened to the upper part of the machine room 11 provided at the lower part of the rear surface of the main body 1. is doing. The bottom of the machine room 11 is formed by a base plate 12, on which a compressor 13 is mounted. The compressor 13, the evaporator 8 and a condenser (not shown) and an expansion valve constitute a refrigerating cycle, and the evaporator 8 has a low temperature and the condenser has a high temperature. The cool air produced by the fan and the evaporator 8 exits from the cool air outlet, cools each room, returns to the cooling room 7, is cooled again, and circulates to keep each room at a predetermined temperature. Due to this circulation, the moisture in the refrigerator adheres to the evaporator 8 as frost and deteriorates the heat conduction. Therefore, the defrost heater 9 is energized periodically to produce defrost water, and the water pipe 10 transfers it to the machine room 11. Is leading.

The structure of the connecting portion between the inner box and the drain hose, which is a feature of the present invention, will be described. FIG. 2 is a side sectional view of an essential part of one embodiment of the structure of the connection part between the inner box of the electric refrigerator and the drain hose of the present invention. As shown in FIG. 2, reference numeral 21 denotes an inner box, which is provided with a projecting portion 25 mo on its rear surface, and a stepped concave portion 24 is formed in this projecting portion 25. An insertion hole 26 is provided on the bottom surface of the. A drain hose 23 is a stepped portion 27 so as to be internally provided in the stepped concave portion 24 of the inner box 21, and a tip portion which is continuous with the stepped portion 27 and is inserted into the inner box through the insertion hole 26. 28 is formed. Reference numeral 22 denotes a heat insulating wall, which is a heat insulating wall formed by closely attaching the drain hose 23 to the inner box 21 and then foaming and hardening the urethane resin filled between the inner box 21 and the outer box 20. In order to enhance the close contact between the inner box 21 and the drain hose 23, as described above, first, the stepped portion 27 is formed in the drain hose 23, and the stepped recess 24 of the inner box 21 is internally provided. Further, a claw portion 29 for sandwiching an insertion hole provided on the bottom surface of the inner box is provided at the tip end portion 28 of the drain hose 23, and further comes into contact with the projecting portion 25 of the inner box and is provided on the outer peripheral portion of the drain hose 23. By providing the flare-shaped fin portion 30 and forming the dimension between the claw portion 29 and the fin portion 30 of the drain hose 23 slightly smaller than the dimension between the upper surface of the projecting portion 25 of the inner box 21 and the bottom surface of the concave portion, The adhesion between the inner box 21 and the drain hose 23 is further increased.

[0008]

[Effect of device]

 With the above construction, in the electric refrigerator according to the present invention, the fin portion is provided on the outer peripheral portion of the drain hose so as to come into contact with the protruding portion provided on the back surface of the inner box, and the fin portion is provided on the concave portion formed on the protruding portion. The drain hose is provided by providing a claw portion for sandwiching the insertion hole and forming the dimension between the fin portion and the claw portion slightly smaller than the dimension between the corresponding upper surface of the protruding portion and the bottom surface of the concave portion of the inner box. When the is attached to the inner box, the flare-shaped fin portion is attached in close contact with the protruding portion of the inner box, so that the urethane resin stock solution can be prevented from leaking into the inner box.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the electric refrigerator of the present invention.

FIG. 2 is a side sectional view of an essential part of an embodiment of the structure of the connection part between the inner box and the drain hose of the electric refrigerator of the present invention.

FIG. 3 is a side sectional view of an essential part of an example of a structure of a connecting portion between an inner box and a drain hose of a conventional electric refrigerator.

[Explanation of symbols]

 1 Refrigerator 2 Freezer 3 Refrigerator 4 Vegetable compartment 5 Partition wall 6 Door 7 Cooling chamber 8 Evaporator 9 Defrost heater 10 Drain hose 11 Machine room 12 Base plate 13 Compression chamber 14 Evaporator 20 Outer box 21 Inner box 22 Insulation wall 23 Drain Hose 24 Stepped Recess (Inner Box) 25 Projection 26 Insertion Hole 27 Stepped Part (Drain Hose) 28 Tip Part 29 Claw 30 Fin

Claims (2)

[Scope of utility model registration request] 1. A projection is provided at a predetermined position on the back surface of the inner box, a stepped recess is formed in the projection, and an insertion hole is provided on the bottom surface of the recess, while the insertion hole of the recess is used to insert the projection into the inner box. The drain hose to be inserted is formed with a stepped portion corresponding to the concave portion, a claw portion for sandwiching the insertion hole is provided, and a fin portion is provided on the outer peripheral portion for abutting a protruding portion provided on the inner box. And an electric refrigerator. 2. A dimension between a claw portion for sandwiching the insertion hole of the recess of the drain hose and a fin portion provided on the outer peripheral portion is formed on the upper surface of the corresponding protruding portion provided on the inner box and on the protruding portion. The electric refrigerator according to claim 1, wherein the size is set to be slightly smaller than the dimension between the bottoms of the recesses.