JPH0678780U - Electric refrigerator - Google Patents

Abstract

(57) [Summary] [Purpose] The structure of the connection between the inner box and drain hose that does not leak urethane even if the urethane leak prevention sealing material at the connection between the inner box and drain hose is eliminated. [Structure] Reference numeral 21 denotes an inner box, in which a stepped recess 24 is formed from the rear surface toward the inner side 21, and an insertion hole is provided in the bottom surface of the recess 24. Reference numeral 23 denotes a drain hose, and a stepped portion 25 is provided so as to be internally provided in the stepped concave portion 24 and a tip end portion which is inclined and upwardly inclined to the stepped portion 25 and is inserted into an insertion hole provided in the concave portion 24. 26 is formed. Two
Reference numeral 2 denotes a heat insulating wall, which is formed between the inner box 21 and the outer box 30 by foaming and hardening urethane resin after the drain hose 22 is closely attached to the inner box 21. Inner box 2
In order to improve the close contact between the drain hose 23 and the drain hose 23, the step portion 25 of the drain hose 23 is provided with a ridge 27. Further, a plurality of claws 28 are provided at required locations of the tip portion 26, and projections 9 are provided at a few locations in the vicinity corresponding to the claws 28.

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 30 and foaming and hardening the same inside, but the outer box 30 and the inner box 30 are formed. 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, there is a problem that the unit cost of the sealing material is high and 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-mentioned problems, the present invention forms a stepped concave portion inward from the back at a predetermined position of the inner box, and provides an insertion hole on the bottom surface of this concave portion to accommodate the concave portion on the drain hose. A stepped portion is formed, and, following this stepped portion, a distal end portion that is inclined obliquely upward to be inserted into the insertion hole of the recess is provided, and a protrusion is provided on the stepped portion of the drain hose. It is characterized in that the front end is provided with a claw for fixing the front-rear direction and a plurality of protrusions are provided at positions corresponding to the claw.

[0005]

[Action]

 With the above construction, in the electric refrigerator according to the present invention, the inner box is provided with the stepped recess, and the drain hose is provided with the stepped part so as to be installed in the stepped recess. A step is provided on the stepped part of the drainage hose to enhance the close contact with the inner circumference of the stepped part of the corresponding inner box.Furthermore, several tabs are provided at required positions on the tip of the drain hose. Is attached to the peripheral edge of the insertion hole provided in the concave surface of the inner box, and the drain hose is fixed to the inner box by the tab of the tab and the flange of the stepped portion, and a projection is formed at a location corresponding to the tab. Several places are provided, and the protrusion absorbs the play in the vertical and horizontal directions near the bottom surface of the concave surface of the inner box.

[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 an 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, in which a stepped concave portion 24 is formed from the back surface toward the inner side 21, and an insertion hole is provided in the bottom surface of the stepped concave portion 24. is there. A drain hose 23 is a stepped portion 25 so as to be internally provided in the stepped recessed portion 24 of the inner box 21, and the stepped portion 25 is inclined and inclined upward, and continues to the bottom surface of the recessed portion 24 of the inner box 21. A tip portion 26 to be inserted into the insertion hole provided in is formed. Reference numeral 22 is a heat insulating wall, which is formed by closely attaching the drain hose 22 to the inner box 21 and then foaming and hardening urethane resin between the inner box 21 and the outer box 30. In order to enhance the close contact between the inner box 21 and the drain hose 23, as described above, first, the step portion 25 is formed in the drain hose 23, and the step portion 25 of the inner box 21 is internally provided. Protrusions 27 are provided on the stepped portion 25 of the drain hose 23 so as to be in close contact with the inner peripheral surface of the concave portion 24 of the inner box 21, and further at a required position of the front end portion 26 of the drain hose 23. By providing the hooks 28 at several places, the drain hose 23 is fixed to the inner box 21 by the hooks 28 and the flange of the stepped portion 25. Further, the protrusions 9 are provided at several places in the vicinity corresponding to the claws 28, and the protrusions 29 absorb up / down and left / right backlash in the vicinity of the bottom surface of the concave surface 24 of the inner box 21, thereby further improving the inner box 21. To improve the adherence.

[0008]

[Effect of device]

 As described above, in the electric refrigerator according to the present invention, the inner box is provided with the stepped concave portion, the drain hose is provided with the stepped portion so as to be installed in the stepped concave portion, and the drain is further provided. Protrusions are provided on the stepped part of the hose to enhance the close contact with the inner circumference of the stepped part of the corresponding inner box.In addition, several tabs are provided at the required locations on the tip of the drain hose. Is attached to the peripheral edge of the insertion hole provided in the concave surface of the inner box, the drain hose is fixed to the inner box by the tab and the flange of the stepped portion, and the projection is provided at a location near the tab, corresponding to the tab. By providing several points and absorbing the play in the vertical and horizontal directions in the vicinity of the bottom surface of the concave surface of the inner box by this projection, it is possible to absorb the variation at the time of molding 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 Compressor 14 Evaporator 21 Inner box 22 Insulation wall 23 Drain hose 24 Stepped Recess (Inner Box) 25 Stepped Part (Drain Hose) 26 Tip (Drain Hose) 27 Projection 28 Claw 29 Projection 30 Outer Box

Claims (1)

[Scope of utility model registration request] 1. A stepped recessed portion that faces inward from the back is formed at a predetermined position of the inner box, an insertion hole is provided in the bottom surface of the recessed portion, and a stepped portion corresponding to the recessed portion is formed in the drain hose. Following this stepped portion, a tip portion that is slanted upward to be inserted into the insertion hole of the recess is provided, a protrusion is provided on the stepped portion of the drain hose, and the front-back direction is fixed to the tip portion. An electric refrigerator characterized in that a plurality of protrusions are provided at each of the claws and the places corresponding to the claws.