JPS6186566A - refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an invention for efficiently generating heat from a radiation-type defrosting pipe heater disposed to defrost a cooler.

[Background of the invention]

A conventional refrigerator with this type of structure will be explained with reference to FIGS.
I-i, I 't'% 'b;' 1.1j
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Piece ``1hf-'iA;ili'B is the refrigerating room.

Reference numeral 4 denotes a partition wall that partitions the freezer compartment 2 and the refrigerator compartment 3.

5 indicates a cold air passage formed within the partition wall 4.

6 is a cooler installed at the rear of the freezer compartment 2, and 7 is a radiation type defrosting tube heater installed at the bottom of the cooler 6.

Reference numeral 8 denotes rubber caps attached to both ends of the defrosting heater 7 to process the ends of lead wires (not shown).

9 is a ceiling cover installed between the cooler 6 and the defrosting tube heater 7. This ceiling cover 9 prevents the defrosting water dripping from the cooler 6 from hitting the defrosting pipe heater 7 and generating evaporation noise. Further, this ceiling cover 9 is attached to the rubber cap 8 on the defrosting tube heater 7 side using mounting legs 9a at both ends, and is also suspended from the cooling unit 2; 6 using supporting legs 9b. 10 is a gutter that receives the defrosting water dripping from the cooler 6. As shown in the figure, this gutter 10 is installed when filling the refrigerator body 1 with foam insulation material. 11 is a protector made of aluminum or the like. This is to prevent the defrosting pipe heater 7 from abnormally heating and deforming the defrosting tube heater 7.

Reference numeral 12 indicates a drain provided to drain the defrosting water accumulated in the gutter 10 to the outside of the refrigerator.The defrosting pipe heater 7 is connected to the cold air passage 5 (refrigeration room) as shown in the figure. The cold air passage 51 is normally installed opposite to the cold air passage 51 for the purpose of preventing frost etc. in the passage for returning the cold air discharged from the cooler 3 to the cooler 6.

13 is a partition plate that divides the inside of the freezer compartment 2 into a place where the cooler 6 is installed and a place where food is placed; 14 is a fan guard; and 15 is a blower for forced circulation of cold air. In a conventional refrigerator having such a structure, a normal cooling operation is performed as follows. That is, the cold air cooled by the cooler 6 is passed through the partition plate 13 by the blower 15 for forced circulation inside the refrigerator.
, is discharged into the freezer compartment 2 through the fan guard 14, and is also discharged into the refrigerator compartment 3 through a cold air passage (not shown in the figure).

The cold air discharged into the freezer compartment 2 and the refrigerator compartment 3 cools the food in each compartment, and then returns to the cooler 6 section.

That is, the cold air in the freezer compartment 2 is passed through the freezer compartment return cold air passage 16, and
The cold air in the refrigerator compartment returns from the cold air passages 5, respectively.

While repeating this operation, frost builds up on the cooler 6.
When the defrosting pipe heater 7 is energized to remove this accumulated frost, the cold air around the defrosting pipe heater 7 is heated by the heater 7, rises to the cooler 6 side, and removes the frost attached to the cooler 6. Comb. During this process, the melted water falls from the cooler 6 toward the defrosting tube heater 7. On the other hand, since there is a ceiling cover 9 above the defrosting pipe heater 7, the defrosting water of the direct light does not hit the defrosting pipe heater 7 and generate evaporation noise. Furthermore, when the defrosting pipe heater 7 is heating, the surface of the gutter 10 is covered with the aluminum protector 11, so that the gutter 10 will not be abnormally heated and deformed.

As mentioned above, conventional refrigerators are equipped with a protector 11 that covers the entire gutter 10 (this makes it a practical refrigerator, but the cost of a protector that covers the entire gutter 10 is prohibitive, and the cooler In a refrigerator in which a ceiling cover 9 and a defrosting pipe heater 7 are attached to the refrigerator 6, the fan guard 14 and partition plate 13 are removed and the cooler 6 is pulled out to the freezer compartment 2 side.When servicing the cooler 6 There was a problem in that the defrosting pipe heater 7 hit the part 2 of the partition wall 4, making it difficult to pull out the cooler 6.

Furthermore, the heat supply from the defrosting tube heater 7 to the cold air passage 5 that cannot be covered with the aluminum protector 11 is as follows:
Since no special measures were taken, there was a problem that if too much heat was supplied from the defrosting tube heater 7, the heat insulating material of the partition wall 4 forming the cold air passage 5 would be thermally deformed.

[Purpose of the invention]

The present invention has been made to solve the various problems mentioned above.

[Synopsis of the invention]

In other words, rubber cap for terminal treatment of defrosting pipe heater
(ltllll mai ↓ 17 pieces of nogo 1 i □m were removed, and a box-shaped cover covering the heat generating part of the defrosting pipe heater was attached using the rubber cap, and a box-shaped cover was installed on the side wall of the box-shaped cover. After the rubber cap is clamped by the clamping part, the clamping relationship between the clamping part and the rubber cap is completed by the ceiling cover.

[Embodiment of the Invention] The details of the present invention will be explained below using an embodiment shown in FIGS. 1 to 5.

Note that the same reference numerals in the drawings indicate the same parts, so the explanation will be omitted.

27 is a radiation type defrosting tube heater equipped with the present invention. Rubber caps 28 are provided at both ends of the defrosting tube heater 27 to treat the ends of lead wires (not shown).

29 is a box-shaped cover with an open top. The heat generating part 27a of the tube heater 27 for convergence-shaped fM is located inside this box-shaped cover 29. is formed into a U shape.

Further, this box-shaped cover 29 elastically holds the rubber cap 28 with a holding part 29b provided on a side wall 29a.

The box-shaped cover 29 is fixed to the rubber cap 28 by inserting the legs 30a of the ceiling cover 30 into the notch holes 31 provided in the side wall 29a, as shown in FIG. It is completed when the expansion (Fig. 5) is restricted.

Reference numeral 32 denotes an air intake port provided on the bottom surface of the box-shaped cover 29, etc. From this air intake port 32, the cold air that has cooled the freezer compartment 2 and the refrigerator compartment 3 is supplied to the heating chamber 33, which is composed of the box-shaped cover 29, the ceiling cover 30, the defrosting pipe heater 27, etc. It is something.

34 is an opening provided in the rising piece 29 portion of the box-shaped cover 29 (the rising piece located on the partition side). This opening 34 just faces the return passage 5 from the refrigerator compartment 3, and is an opening suitable for supplying just the right amount of heat to the passage 5 when the defrosting tube heater 27 generates heat.

35 is a guide piece provided above the opening 34. As shown in FIG.

This guide piece 35 may be about 3 to 10 pieces, and is formed to protrude substantially perpendicularly to the rising piece 29c.

36 is a cutout window formed opposite to the return passage 16 from the freezer compartment 2. Since there is no temperature difference in the return passage 16, the amount of frosting is smaller than in the passage 5. Taking this into consideration, this path 16 is provided with a drawstring 36a to prevent heat from being supplied to the previous path 5. Reference numeral 37 indicates a hole provided in the bottom surface of the box-shaped cover 29, which also serves as an air intake port.

The size of this hole and the air intake port 32 explained earlier is that of the gutter 1.
It is of a size that can supply the amount of heat to the gutter 10 without leaving any frost and does not deform the mallet 10.

38 is a support leg provided on the gutter 10. This support leg 38 is formed into an elastic shape as shown in the figure, and the rubber cap 28 is held at the gripping portion 38a through the opening of the support leg 38.
When the support legs 38 are positioned in the gutter 1, the support legs 38
It is fixed above 0.

Reference numeral 39 denotes an air discharge port opened in the upper part of the box-shaped cover 29, which has a sufficient opening area to melt frost adhering to the EVP during defrosting. Refrigerator 1 of this defrosting tube heater 27
After the rubber cap 28 is held between the holding parts 29b of the box-like cover 29, the ceiling cover 30 is installed in the box-like cover 29, preventing the box-like cover 29 from spreading, and positioning is performed.

The defrosting tube heater 27 assembled in this way is assembled with a rubber cap 28 on the support leg 38 of the gutter 10 which is assembled into the main body.

The refrigeration operation in the refrigerator configured as described above is almost the same as that described in the conventional example, but during defrosting, the defrosting water from the cooler 6 is directed toward the defrosting tube heater 27. As in the past, dripping is prevented by the ceiling cover 30,
The heat generated by the defrosting tube heater 27 is generated in excess or in places where it should not be heated (mostly in the heating chamber 33 formed by the box-shaped cover 29 and ceiling cover 30).
Used to heat the air inside. This is ceiling cover 30,
The box-shaped cover 29 or aluminum, etc. (because metal with high reflectivity is used, the heat rays radiated in the circumferential direction from the radiant tube heater can be used to open holes or other holes as necessary). The heated air is diffusely reflected inside the heating chamber, and is used to raise the air temperature inside the heating chamber.For this reason, convection occurs in this area, and the warmed air is gradually discharged from the air outlet 39 provided at the top of the heating chamber. Since it is supplied to the cooler side, the defrosting process is accelerated.

In this process, heat-controlled air is supplied to the cold air passage 5 or the bottom of the gutter.

〔Effect of the invention〕

As explained above, the present invention supports the rubber cap for terminal treatment of the defrosting tube heater by the shaft-side support leg installed at the bottom of the cooler, and utilizes the rubber cap to generate heat in the defrosting tube heater. Attach a box-shaped cover to cover the area and sandwich the rubber cap with the clamping part provided on the side wall of the box-shaped cover, and then use the ceiling cover to complete the clamping relationship between the clamping part and the rubber cap. Not only does it allow efficient defrosting, but it also eliminates the need for a conventional 9-hole large protective body (in addition to preventing deformation of the gutter, it also prevents the inside of the cold air passage from being heated abnormally and causing thermal deformation. Furthermore, the box-shaped cover and ceiling cover, which have the above-mentioned effects, can be securely fixed using a rubber cap.Furthermore, in the present invention, the defrosting tube heater can be used with a cooler. Since it has been added to the supplementary regulations, services such as cooler replacement can be performed regardless of the defrosting pipe heater, ceiling cover, and box-shaped cover, which greatly improves serviceability.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the main parts of a refrigerator equipped with the present invention, Figure 2 is a diagram showing the fixing structure of the defrosting tube heater shown in Figure 1, and Figure 3 is a diagram showing a cover installed in the gutter. FIG. 4 is a perspective view of essential parts of the defrosting tube heater, FIG. 4 is a sectional view taken along line XX in FIG. 3, FIG. A partial cross-sectional view of a refrigerator showing the conventional structure,
FIG. 7 is a diagram showing the fixing structure of the defrosting tube heater shown in FIG. 1. 1... Refrigerator body, 2... Freezer compartment, 3... Refrigerator compartment, 4... Partition wall, 5... Refrigerated passage, 6... Cooler, 27... For defrosting Tube heater, 27a... Heat generating part of tube heater, 28... Rubber cap, 29... Box-shaped cover, 29a... Side wall, 29b... Clamping part, 29c
...Rising piece, 3゜...Ceiling cover, 30a...
Leg, 31... Notch hole, 32... Air intake port, 33.
...Heating chamber, 34...Opening, 35...Kite piece, 3
6... Notch window, 36a... Eaves, 37... Hole,
38... Support leg, 38a... Support leg clamping part, 39
...Air discharge port, 40...Leg for positioning. Yu5kuni

Claims (1)

[Claims] 1. A box in which the rubber cap for terminal treatment of the defrosting tube heater is supported by the gutter side support legs installed at the bottom of the cooler, and the rubber cap is used to cover the heat generating part of the defrosting tube heater. The refrigerator is characterized in that a rubber cap is clamped by a clamping part provided on a side wall of the box-shaped cover, and then the clamping relationship between the clamping part and the rubber cap is completed by a ceiling cover.