JP2000018797A - Fixing structure of vapor condensation preventing heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the manufacturing time while reducing cost by enhancing the workability at the time of fixing a heater for preventing vapor condensation of a heat insulating box. SOLUTION: A sheet metal material 40 having dimensions set longer than a flange part 11a is pasted to the rear side face at the flange part 11a of an inner box 11 through a both sided tape 42 applied entirely onto the front face thereof. A vapor condensation preventing heater 22 arranged along the open end 11b of the flange part 11a is pasted through the both sided tape 42 to the part of the sheet metal material 40 extending from the open end 11b of the flange part 11a toward an outer box 13. Bend 13a of the outer box 13 is positioned to abut against the front side of the flange part 11a so that the inner and outer boxes 11, 13 touch the vapor condensation preventing heater 22 trough an aluminum foil tape 24 covering the heater 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a dew condensation preventing heater, and more particularly, to a heat insulating box in which an inner box is assembled at a required interval inside an outer box and a heat insulating material is filled between the two boxes. The present invention relates to a structure for mounting a condensation prevention heater.

[0002]

2. Description of the Related Art In a refrigerator in which a storage room for storing an object to be stored, such as foodstuffs, is formed inside an insulating box in which a heat insulating material is provided between an outer box and an inner box, the outer box is formed by the heat insulating material. The heat conduction between the inner box and the inner box is suppressed to prevent dew condensation on the outer box. However, in the front part of the outer case and the inner case where it is difficult to provide the heat insulating material structurally, since dew condensation occurs due to a temperature difference, a heating means such as a heater is provided to prevent this. Was. The present invention relates to a mounting structure of a dew condensation prevention heater employed in a heat insulating box of a refrigerator.
This will be described with reference to FIG.

As shown in FIG. 6, a refrigerator 10 comprises an outer box 13 having a large opening on the front side, an inner box 11 also having a large opening on the front side, and polystyrene filled between the two boxes 11, 13. And a heat insulating box 18 made of the heat insulating material 12 described above. On the front surface of the heat-insulating box 18, a heat-insulating door 30 corresponding to the opening 18a opened in the heat-insulating box 18 is provided to open and close the opening 18a. The cooling space 20 defined inside the inner box 11 is cooled by a cooling mechanism (not shown), so that the storage object stored in the cooling space 20 is cooled and stored.

As shown in FIG. 7, the outer box 13 comprises an outer box upper part 14 which forms the upper surface of the heat insulating box 18, an outer box right part 15 which forms the right side, and an outer box left part 16 which forms the left side. The outer case lower part 17 forming the lower surface and the outer case back part 12 forming the back surface are joined to each other. This outer box 13
The outer box upper part 14, the outer box right part 15, the outer box left part 16, and the outer box lower part 17 are provided with bent portions 14a, 15a, 16a, 17a which are bent inward at substantially right angles inward at the front edges thereof. , Each bent portion 14a, 15a, 16a, 17a
1 is formed by a method described later on a flange portion 11a formed at the front end edge and bent outward at a substantially right angle.

The bent portions 14a, 15a, 16a, 17
A method of joining the flange portion 11a to the flange portion 11a will be described with reference to the relationship between the bent portion 16a and the flange portion 11a. As shown in FIG. A substantially U-shaped joint 16b that accommodates the flange 11a of the box 11 is provided. Then, in a state where the outer box left portion 16 is arranged such that the flange portion 11a contacts the front side inside the joint portion 16b, an appropriate pressing member 19 is provided in the gap between the joint portion 16b and the back surface of the flange portion 11a. The outer case left portion 16 is fixed to the inner case 11 by being inserted into the inner case 11. That is, the outer box upper part 14 and the outer box right part 15
By fixing the lower part 17 of the outer case to the inner case 11 via the joints 14b, 15b, 17b, the inner case 11 and the outer case 13 are joined. In this way, the outer periphery of the opening 18a where the two boxes 11 and 13 are joined functions as the front frame 32 with which the heat insulating door 30 contacts.

[0006] The two boxes 11, 13 are joined to each other at the upper part 14, the right part 15, the left part 16, and the lower part 17 of the outer case 13 at the inside parts of the outer case upper part 14, the outer case right part 15, and the outer case lower part 17.
b, 17b, the joints 14b, 1
For the parts provided with 5b, 16b and 17b,
As shown in FIG. 8, the heat insulating material 12 is not filled.
For this reason, the heat insulation near the front frame 32 is low, and the cool air in the cooling space 20 is conducted through the two boxes 11 and 13, so that there is a disadvantage that dew condensation is easily caused.

Therefore, in order to prevent dew condensation near the front frame 32, each of the joints 14b is formed at the outer box upper part 14, the outer box right part 15, the outer box left part 16, and the outer box lower part 17 of the outer box 13. , 15b, 16b, 17b, the dew-prevention heater 22 as a heating means is provided in each of the grooves 14c, 15c, 16c, 17c.
a and 17a, respectively, and are fixed by aluminum foil tape 24. That is, the dew condensation prevention heater 22 is energized and the bent portions 14a, 15a, 16
By heating a and 17a, dew condensation near the front frame 32 is prevented. The dew condensation prevention heater 2
2, the upper part 14 of the outer box and the right part 1 of the outer box as shown in FIG.
5, four heaters, an upper heater 22a, a right heater 22b, a left heater 22c, and a lower heater 22d, corresponding to the outer case left portion 16 and the outer case lower portion 17.

[0008]

As described above, the upper part 14 of the outer case, the right part 15 of the outer case, and the left part 1 of the outer case which constitute the outer case 13 are described above.
In the case of a structure in which the upper heater 22a, the right heater 22b, the left heater 22c, and the lower heater 22d are provided corresponding to the outer heater 6 and the lower part 17 of the outer box, each heater 22a, 22b, 22c, 2
There is a problem that the installation of the wiring for supplying the current to each 2d becomes complicated, and the number of parts and the number of steps increase, which takes a long time to manufacture. Further, the heaters 22a, 22
2b, 22c, and 22d are inserted into corresponding grooves 14c of the outer box 13,
When mounting on the grooves 15c, 16c, 17c, the grooves 14c,
Since 15c, 16c, and 17c are narrow, the mounting work and the fixing work with the aluminum foil tape 24 are difficult, and a drawback that the working time is lengthened is pointed out.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks inherent in the prior art, and has been proposed in order to preferably solve the problem. An object of the present invention is to provide an installation structure of a dew condensation prevention heater which can improve workability in mounting a heater and can reduce manufacturing time and cost.

[0010]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and achieve the intended object, a mounting structure for a dew condensation prevention heater according to the present invention comprises an outer box opening on the front side, and an inner box inside the outer box. In a heat-insulating box, which is assembled while maintaining a required interval and is also open to the front side, and a heat-insulating material filled between the two box bodies, a bent portion bent inward at a front edge of the outer box. Forming a flange portion formed on the front end edge of the inner box and bending outward, abuts on the rear surface side of the bent portion of the outer box, and on the rear surface side of the flange portion of the inner box, A guide material is provided so as to extend from the open end to the outer box side by a required length, and a sticking material attached to a front surface of the guide member extending from the flange portion is attached to the inner box. Attach one dew condensation prevention heater arranged along the open end of the flange. Characterized in that as to attach it.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a mounting structure of a dew condensation prevention heater according to the present invention. The same members as those already described in the conventional refrigerator and the heat insulating box described with reference to FIGS. 6 to 8 are denoted by the same reference numerals, and detailed description will be omitted.

As shown in FIG. 1, a refrigerator 10 in which a structure for mounting a dew condensation prevention heater according to the present embodiment is employed is an inner box 1
1, a heat insulating box 18 constituted by a heat insulating material 12 and an outer box 13, a cooling space 20 defined therein, and a heat insulating door 30 for opening and closing an opening 18a of the heat insulating box 18.
And a machine room 5 defined below the heat insulating box 18 and provided with a cooling mechanism 56 including a condenser 52 and a compressor 54 and the like.
It basically consists of 0. And the cooling mechanism 56
The cooling space 20 is cooled by circulating a coolant into an evaporator (not shown) provided in the heat insulation box 18 and cooling the evaporator.

As shown in FIG. 3, a flange portion 11a which is bent outward at a substantially right angle is formed substantially all around the front edge of the inner box 11, and the entire circumference of the front edge of the outer box 13 is formed. Has a bent portion 13 bent inward at a substantially right angle.
a is formed, and the flange portion 11 of the inner case 11 incorporated in the outer case 13 is configured to abut on the rear surface side of the bent portion 13 a of the outer case 13.

On the rear side of the flange portion 11a of the inner box 11, a sheet metal material 40 as a guide material dimensioned longer than the flange portion 11a is provided as an adhesive material adhered to the entire front surface thereof. It is firmly attached via a double-sided tape 42. Flange part 11 of this sheet metal material 40
The dew condensation prevention heater 22 disposed along the open end 11b of the flange portion 11a is adhered to the extension portion extending from the open end 11b of the a to the outer box 13 via the double-sided tape 42. I have. Although the diameter of the dew condensation prevention heater 22 is not particularly limited, it is preferable that the flange portion 1 be used.
A material having the same thickness as 1a and being bendable is used. Further, the double-sided tape 42 is not particularly limited to a tape-shaped one. The double-sided tape 42 has sufficient heat resistance to the dew condensation prevention heater 22 and can securely fix the sheet metal member 40 and the heater 22. I just need.

Further, the open end 11 of the flange 11a
In order to increase the fixing force of the dew condensation prevention heater 22 disposed along the
The aluminum foil tape 24 is applied from the side of the heat insulating material 12 to the side of the flange portion 11a that contacts the bent portion 13a. Here, the aluminum foil tape 24 as the adhesive fixing member is provided between the heater 22 and the bent portion 13a, and therefore needs to have sufficient heat conductivity. However, the material is not limited to aluminum.

In the inner box 11 and the outer box 13, a dew condensation preventing heater 22 is adhered to the open end 11b of the flange portion 11a by using a sheet metal material 40 as a guide, and contacts the dew condensation preventing heater 22 through an aluminum foil tape 24. The front frame 32 is formed by positioning the bent portion 13a of the outer box 13 so as to abut the front side of the flange portion 11a. And these bent parts 1
For example, a fixing hole is provided in a predetermined position of each of the members 13a, 11a, 40 in the 3a, the flange portion 11a, and the sheet metal material 40, and a rivet 44 as a fixing member is inserted so as to communicate with the fixing hole. Fixed in this way. In the front frame 32, the position and the number of the fixed portions are appropriately determined depending on the bonding strength of the flange portion 11a, the bent portion 13a and the dew condensation prevention heater 22, the size of the front frame 32, and the like. Further, the degree of adhesion between the bent portion 13a forming the front frame 32 by fixing and the heater 22 is further increased, and the heat from the dew condensation prevention heater 22 is efficiently transmitted.

[0017]

Next, the operation of the dew condensation prevention heater mounting structure according to the embodiment will be described. The dew condensation prevention heater 2
When attaching 2 to the heat insulating box 18, as shown in FIG. 4A, the sheet metal material 40 is first adhered to the rear side of the flange portion 11 a of the inner box 11 via the double-sided tape 42. At this time, the sheet metal material 40 extends outward from the open end 11b of the flange portion 11a by a required length. And
The dew condensation prevention heater 22 is sequentially adhered to the double-sided tape 42 along the open end 11b of the flange portion 11a with the sheet metal material 40 as a guide (see FIG. 4B). Next, an aluminum foil tape 24 is attached so as to cover the dew condensation prevention heater 22 to which the attachment has been completed (see FIG. 4C). Finally, the outer box 13 is assembled, and a predetermined position is fixed by a rivet 44 so that the dew condensation preventing heater 22 is brought into close contact with the bent portion 13a.
(See FIG. 4D).

That is, in the mounting structure of the embodiment, since the dew condensation preventing heater 22 is mounted along the open end 11b of the inner box 11 with the sheet metal material 40 as a guide, the positioning of the heater 22 is easy. Further, since the work of attaching the dew condensation prevention heater 22 can be performed outside the inner box 11, the work can be performed easily and in a short time. In addition, it is not necessary to divide the dew condensation prevention heater 22 into a plurality of parts, and a single dew condensation prevention heater 22 can cover the entire front frame. Workability at the time is greatly improved, and the number of parts can be reduced, so that manufacturing time and cost can be reduced.

[0019]

In another embodiment, a refrigerator 1 in which a cooling space 20 for accommodating foods and the like to be stored is defined inside a heat insulating box 18.
Although 0 has been described, the present invention is not limited to this. For example, as shown in FIG. 5, a heat insulating box 18 defining a cooling space 20 is provided, and the heat insulating box 18 is disposed at a predetermined position such as a lower portion of the heat insulating box 18 on the opening 18 a side from a beverage container 46 stored in the cooling space 20. The receiving pan 6
The present invention can also be applied to a beverage dispensing device 45 for dispensing a beverage into the cup 62 placed on the zero.

[0020]

[Modification] In the above-described embodiment, the dew condensation prevention heater is attached to the flange portion by using the double-sided tape for attaching the sheet metal material. However, the tape for attaching the heater is separately attached to the sheet metal material. May be used. Further, the outer box may be divided into a plurality of members as in the conventional technique, or may be formed integrally.

[0021]

As described above, according to the mounting structure of the dew condensation preventing heater according to the present invention, the dew condensation is prevented along the open end of the flange portion by using the sheet metal disposed on the flange portion of the inner box as a guide. Since the heater is mounted, the positioning of the heater can be easily performed. Further, since the work of attaching the dew condensation prevention heater can be performed outside the inner box, the work can be performed easily and in a short time. Moreover, it is not necessary to divide the dew condensation prevention heater into a plurality of parts, and one dew condensation prevention heater can be disposed all around the heat insulation box. Workability at the time is greatly improved, and the number of parts can be reduced, so that manufacturing time and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing a refrigerator according to an embodiment of the present invention with a part cut away.

FIG. 2 is a plan sectional view showing a joint between an inner box and an outer box according to the embodiment.

FIG. 3 is a perspective view showing the heat insulation box according to the embodiment with a part cut away.

FIG. 4 is a process diagram showing a joining process of the inner box and the outer box according to the embodiment.

FIG. 5 is a partially cutaway side view showing a beverage dispensing apparatus according to another embodiment.

FIG. 6 is a side view of an essential part showing a refrigerator according to a conventional technique with a part cut away.

FIG. 7 is an exploded perspective view showing a heat insulating box according to a conventional technique.

FIG. 8 is a cross-sectional plan view showing a joint between an inner box and an outer box according to a conventional technique.

[Explanation of symbols]

11 inner box, 11a flange, 11b open end, 12
Insulation material, 13 Outer box 13a Bend, 22 Dew condensation prevention heater, 24 Aluminum foil tape 40 Sheet metal material (guide material), 42 Double-sided tape (adhesive material)

Claims (2)

[Claims] 1. An outer box (13) opening on the front side, and the outer box
(13) An insulation box composed of an inner box (11), which is assembled at a required interval and also opens to the front side, and an insulating material (12) filled between the two boxes (11, 13). In the front end edge of the outer box (13), a bent portion (13a) bent inward is formed,
The flange (1) formed at the front edge of (11) and bent outward
1a) abuts against the rear side of the bent portion (13a) in the outer box (13), and the open end of the flange (11a) is positioned on the rear side of the flange (11a) in the inner box (11). A guide member (40) is provided so as to extend the required length from 11b) to the outer box side, and the guide member
The adhesive material (42) attached to the front surface of the extension from the flange portion (11a) in (40) is along the open end (11b) of the flange portion (11a) in the inner box (11). 1 arranged
An attachment structure for a dew condensation prevention heater, wherein the dew condensation prevention heater (22) is attached and attached. 2. The mounting structure for a dew condensation prevention heater according to claim 1, wherein said dew condensation prevention heater is covered with an aluminum foil tape.