JPS6039948B2 - Manufacturing method of refrigerator box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a refrigerator body with a front opening, which is formed by filling an inner box, an outer box, and a space between the two boxes with foamed insulation material, and a refrigerator body formed inside the main body that allows the inside of the refrigerator to be opened vertically. A heat insulating partition wall installed in the main body to divide the room into rooms, a blower for circulating cold air cooled by a cooler installed on the wall to the upper and lower rooms through a cold air passage, and In a refrigerator provided with a drainage channel for draining defrosting water to the outside of the refrigerator, a support structure with good sealing properties at the rear of the partition wall is achieved, and a drainage pipe forming the drainage section is formed in the partition wall. To provide a refrigerator which is formed integrally with the main body to reduce the number of parts, and further has a drainage pipe buried in the heat insulating material of the main body to prevent freezing of circulating cold air inside the refrigerator. It is.

First, a refrigerator with a conventional structure will be explained based on FIGS. 1 and 2. Reference numeral 1 denotes a refrigerator body formed by filling a space between an inner box 2 and an outer box 3 with a foamable heat insulating material 4 by foaming in-place, and forming an interior with an entrance at the front.

Reference numeral 5 denotes an insulating partition wall body that partitions the inside of the refrigerator into upper and lower chambers, and is composed of an upper partition wall 6 and a lower partition wall 7 that substantially insulationally partitions the inside of the refrigerator into upper and lower chambers. are inserted and supported from the front of the main body 1 into the support rail portions formed on the left and right side walls of the inner box 2 by inserting and supporting the left and right support steps of the wall member 14, which will be described later, into the support rails formed on the left and right side walls of the inner box 2. Upper chamber 9 with sealing material 8 interposed
This prevents cold air from flowing between the lower chamber 10 and the lower chamber 10.

The upper partition wall 6 includes a synthetic resin bottom plate 11 forming the bottom wall of the upper chamber 9 and a heat insulating material 12 such as styrofoam provided on the bottom surface of the bottom plate 11.
A cold air suction port 13 for the upper chamber 9 is formed in the bottom plate 11. The lower partition wall 7 is a container-shaped synthetic resin wall village 1 having a peripheral wall and a bottom wall so as to form the upper wall of the lower chamber 10.
4 and a heat insulating material 15 such as styrene foam housed therein, forming a cold air intake port 16 of the lower chamber 10. Reference numeral 18 denotes a cooler chamber for accommodating the cooler 17 formed on the lower partition wall 7 and covered by the upper partition wall 6.

19 is a front plate of the partition wall 5.

The defrosting water from the cooler 17 in the cooler room 18 is passed through the heat insulating material 15 and flows through the first drain port 21 formed in the wall section 14.
A second drain pipe 22 competes with the flanges of the drain pipe 20 and the drain port 21, and a third drain pipe 23 is passed through the second drain pipe 22, which is attached to the back of the outer box 3 and penetrates the inner box 2, to drain the refrigerator. The water is discharged to the outside and guided to the evaporation pan 26 in the lower machine room 25 of the main body 1 through a drainage hose 24 that passes through the third drainage pipe 23 . Reference numeral 27 denotes an electric blower that circulates cold air from the cooler chamber 18 through cold air passages 28 and 29 to the upper and lower chambers 9 and 1.

30 is a damper type thermostat that adjusts the amount of cold air discharged from the cold air passage 29 to the lower chamber 10 according to the temperature of the lower chamber 10.

The operation of the electric compressor 31, which is included in the refrigeration cycle together with the blower 27 and the cooler 17, is substantially controlled according to the temperature of the circulating cold air in the upper chamber 9. With this configuration, the upper chamber 9
becomes a freezing room, and the lower room 10 has a temperature range as a refrigerator room. Reference numeral 32 denotes a cover that covers the second drain pipe 22 passing through the lower chamber 10 so that the second drain pipe 22 does not freeze due to the circulation of cold air discharged from the cold air passage 29.

33 is a seal plate between the inner box 2 and the third drain pipe 23.

34 is a front door of the upper chamber 9, and 35 is a front door of the lower chamber 10.

In the conventional type, as described above, the defrosting water in the cooler chamber 18 is led outside through the first drain pipe 20, the drain port 21, the second drain pipe 22, and the third drain pipe 23, so there is no drain channel. It is necessary to combine a large number of parts to form the drain pipe, and the number of parts is large, and sealing the joints of the drain pipes is troublesome. This will result in an increase in the unit price due to the increase in the number of parts. In addition, the rear surface of the partition wall 5 is the inner box 2.
2, the cold air from the upper freezer compartment 9 flows to the lower refrigerator compartment 10 and the second drain pipe 2
Complications arise in the sealing work, such as interposition of a sealing material 8 to prevent the parts 2 from freezing. In view of these points, the present invention provides a refrigerator for the above-mentioned purpose, and embodiments of the present invention will be described below with reference to FIGS. 3 and 4.

In this case, the same reference numerals as in FIGS. 1 and 2 indicate the same names. In the present invention, the difference from the structure of the subordinate structure is particularly the shape of the rear part of the partition wall 5, the shape of the back wall of the main body 1 combined therewith, and the structure of the drainage channel, and these components have characteristics. . That is, in the back wall portion of the main body 1 corresponding to the rear part of the working arm 5, a recess 36 is formed in which the back wall of the inner box 2 is recessed rearward toward the back wall of the outer box 2. . The partition wall 5 has a protrusion 3 that protrudes part of the wall member 14 and the heat insulating material 15 of the lower partition wall 7 rearward so as to fit into the recess 36.
7 is formed. Reference numeral 38 denotes a first drainage pipe that extends obliquely downward and rearward integrally with the wall member 14 in the protrusion 37, and passes through a hole 39 formed in the inner box 2 corresponding to the lower corner of the recess 36 to drain the outer box. The tip is joined to the insertion portion 40 formed on the back of No. 3.

The insertion part 40 is formed by a drainage connecting pipe 41 that is attached to the side of a hole formed in the outer box 3, and the drainage pipe 38 extends until it extends backward from the outer box 3. The drain connecting pipe 41 functions to connect the drain pipe 38 and the drain hose 24, and is used to prevent the heat insulating material 4 from leaking from the hole in the outer box 3. If the drain pipe 38 passes through a hole in the back wall of the outer box 3 and extends outside the refrigerator, the drain hose 24 is attached to the extended end of the drain pipe 38 and the outer box 3.
If the gap between the holes is to be sealed, the drain connection pipe 41
becomes unnecessary. In this case, the insertion portion 4 is only a hole in the outer box 3. 42 penetrates the heat insulating material 15 to the cooler chamber 1
The second drain pipe is for flowing the defrosting water of No. 8 to the drain pipe 38 and is located inside the protrusion 37, and its upper end is connected to the butterfly receiving part of the cooler 17.

Insulation material 1 incorporating second drainage pipe 42 in the present invention
5 is combined with the wall member 14, and the inner box 2 is combined with the outer box 3.
The lower partition wall 7 is inserted into the support rail portions formed on the left and right side walls of the inner box 2 from the front inside the refrigerator so that the protrusion 37 is fitted into the recess 36 of the lower partition wall 7.

With this insertion, the protrusion 37 is iron-fitted to the recess 36, and through this engagement, the upper and rear upper surfaces of the protrusion 37 portion of the heat insulating material 15 and the wall member 14 are brought into contact with the inner surface of the recess 36, and this portion is brought into contact with the inner surface of the recess 36. This insertion allows for sufficient sealing of the drain pipe 38.
passes through the hole 39 of the inner box 2 and connects with the hole of the outer box 3, and the hole 39 of the inner box 2 is closed by the wall member 14 at the protrusion 37. Thereafter, the drain connecting pipe 41 is inserted and supported through the hole in the outer box 3 so as to fit over the drain pipe 38. In such a combined state, a foamable polyurethane heat insulating material 4 is foamed and filled into the space between the inner box 2 and the outer box 3 using an in-situ foaming method. The inner box 2 may have its outer surface covered with a Freon-resistant bag in the heat insulating material 4, or the inner box itself may be constructed to be Freon-resistant. The recess 3 is filled with this heat insulating material 4.
6, the insulation material 15 and wall member 14 are pressed with foaming pressure to provide sufficient contact force with the inner box 2, and the insulation material 4 is bonded around the drain pipe 38. ,
The recess 36 and the drain pipe 38 are surrounded by a heat insulating material 4 for insulation. As described above, the present invention forms a drainage pipe integrally with the wall member forming the lower and rear surfaces of the partition wall that substantially divides the interior of the refrigerator into upper and lower chambers, and connects the drainage pipe to the back wall of the inner box. The inner box and the outer box are connected to each other with the partition wall supported by the main body so that its rear part competes with the recess so as to pass through the hole formed in the recess and span the insertion part formed in the back wall of the outer box. Since the insulation material is foam-filled between the box and the box, the number of parts required to form the drainage channel for the defrosting water in the cooler chamber is small, and the drainage channel that penetrates the main body can be formed by incorporating the partition wall. Therefore, the assembly work is also extremely simplified.

Furthermore, since the drainage channel from the partition wall to the outside of the refrigerator passes through the main body without passing through the lower chamber, there is no need for a protective cover such as a follower. Furthermore, since the drainage pipe penetrating the main body is reliably covered with the heat insulating material constituting the main body, the insulation of the drainage pipe leading from the cooler room to the outside of the refrigerator is sufficient. That is, at the iron joint between the protrusion of the partition wall and the recess of the inner box, the second drain pipe is located in the heat insulating material within the protrusion, and the first drain pipe is located in the heat insulating material of the main body. Therefore, the drainage canal will have good insulation. Further, the rear part of the partition wall can be supported by the iron joint between the recess and the protrusion, and a seal to prevent leakage of cold air to the first drain pipe and a seal to prevent leakage of the heat insulating material of the main body can be installed in the recess. This can be achieved without exposing the sealed portion inside the refrigerator.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view of the refrigerator as a sub-chassis, Fig. 2 is a sectional view showing the drainage channel section of the partition wall portion in Fig. 1, Fig. 3 is a sectional view showing the drainage shore section of the present invention, and Fig. 4. FIG. 2 is a cross-sectional plan view showing the rear part of the partition wall of the present invention. 1...refrigerator body, 2...inner box, 3...
・Outer box, 4... Insulation material, 5... Partition wall, 6... Upper partition wall, 7... Lower partition wall, 14... Wall village, 15...・Insulation material, 18...Cooler room, 27・
...Blower, 36...Recess, 37...
...Protrusion, 38...First drainage pipe, 39...
... Hole in the inner box, 40 ... Insertion part, 42 ... Second drainage pipe. Figure 2 Figure 4 Figure 1 Figure 3

Claims (1)

[Claims] 1. A refrigerator body with a front opening, which is made of an inner box, an outer box, and a space between the two boxes filled with foamed insulation material; An insulating partition wall installed, a blower that circulates cold air cooled by a cooler installed on the partition wall to the upper and lower chambers through a cold air passage, and drains defrost water from the cooler to the outside of the refrigerator. In the refrigerator provided with a drainage channel, a recess formed by recessing backward in an inner box of the back wall of the main body corresponding to the partition wall;
a protrusion protruding rearward of the partition wall corresponding to the recess;
A first drainage pipe formed at the protrusion so as to extend obliquely downward and rearward integrally with the lower surface forming part of the partition wall, and a second drainage pipe communicating with the exposed part of the cooler and the first drainage pipe. A pipe, a hole provided in the inner box in the recessed portion, and an insertion portion formed in the back wall of the outer box corresponding to the hole, and the first drainage pipe is inserted through the hole in the inner box. The heat insulating material is foamed and filled between the inner box and the outer box while the partition wall is supported by the main body so that the protrusion fits into the recess so as to span the insertion part. Features: A manufacturing method for refrigerator boxes.