JP6857999B2 - refrigerator - Google Patents

Description

Embodiments of the present invention relate to refrigerators.

Generally, a household refrigerator is provided with a heat insulating box body formed by filling a heat insulating material such as urethane foam between an outer box made of steel plate and an inner box made of plastic, for example. Then, by partitioning the inside of the heat insulating box with a heat insulating partition wall, a plurality of storage rooms such as a refrigerating room and a freezing room are provided. Further, along the left and right peripheral flanges of the heat insulating box and the front surface of the heat insulating partition wall, heat radiating pipes forming a part of the refrigerant flow path of the refrigeration cycle are arranged as dew condensation prevention pipes. Is being done (see, eg, Patent Document 1).

Japanese Unexamined Patent Publication No. 2009-68777

By the way, when assembling the heat insulating box body as described above, a heat insulating pipe is arranged (temporarily fixed) in the outer box in advance, and after combining with the inner box, urethane foam is filled in the space formed by them (). Urethane stock solution is injected to foam and cure). In this case, the heat radiating pipe is pulled out from the heat insulating box body to the side where the heat insulating partition wall is provided in advance. For this purpose, a notch is provided in the folded portion on the back surface side of the flange portion of the outer box. The heat dissipation pipe is pulled out from the notch.

At this time, in order to prevent leakage when filling the urethane foam, an adhesive called melt is applied so as to close the gap in the notch, and then the urethane foam is filled. However, in order to close the cutout portion of the folded portion with melt, it is necessary to apply the melt to a relatively wide range, which causes problems such as poor workability and long time. It was also a factor in the occurrence of heat leaks.

Therefore, the folded portion of the outer box is provided with a notch for pulling out the heat radiating pipe to the outside of the heat insulating box, and the gap between the notches can be easily closed. Provided is a refrigerator capable of effectively preventing heat leakage from this portion.

The refrigerator of the embodiment includes a heat insulating box body formed by filling a heat insulating material between the outer box and the inner box, and also includes a heat insulating partition wall for partitioning the inside of the heat insulating box body. A heat radiating pipe is arranged along the inner surface of the outer box, and the side plate of the outer box has a flange portion that bends to the front side along the front side portion and the tip of the flange portion. The first and second folded portions are provided so as to be folded back in a U shape continuously from the portion to the back surface side, and the first and second folded portions are provided at the front end portion of the side portion of the inner box. It has an inner box flange portion that is inserted between the folded portions, and the heat radiating pipe is passed through the outer surface of the inner box flange portion at a position corresponding to the heat insulating partition wall in the second folded portion, and the heat insulating portion is provided. A notch for pulling out toward the partition wall is formed in the vertical direction with a predetermined width, and the second portion is formed around the notch so as to close the gap formed by the notch from the inside. A closing member having a sponge-like member that is elastically adhered to the folded-back portion is provided, and the closing member has the sponge-like member on the surface side of a plastic support plate that is vertically longer than the notch portion. The support plate integrally has hooks hooked on the upper and lower portions of the notch portion at the front end of the second folded-back portion .

The first embodiment is shown, and the front view which shows roughly the arrangement state of the heat dissipation pipe in a heat insulating box body. Perspective view of the main part showing the drawer part of the heat dissipation pipe of the heat insulating box Cross-sectional plan view of the notch part of the heat insulating box A perspective view of a notch portion (a) and a state in which a closing member is attached (b), which is shown with the front surface of the flange portion of the outer box facing downward. Cross-sectional view showing the hooked state (a) and the mounted state (b) of the closing member. Perspective view of the closing member aligned with the orientation of FIG. Perspective view of the closing member showing the second embodiment Front view of the main part of the heat radiating pipe showing the third embodiment

(1) First Embodiment Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 6. First, with reference to FIG. 1, the overall configuration of the refrigerator according to the present embodiment will be briefly described. FIG. 1 shows a refrigerator main body 1 in a state where the door is removed. The refrigerator main body 1 is formed by partitioning the inside of a vertically long rectangular box-shaped heat insulating box 2 having an open front surface by a heat insulating partition wall. , It is configured with multiple storage rooms.

Specifically, a refrigerating room 3, a vegetable room 4, an ice making room 5, an upper freezing room 6, and a lower freezing room 7 are provided in the heat insulating box 2 in this order from the top. Of these, the ice making chamber 5 and the upper freezing chamber 6 are provided so as to be located on the left and right. The refrigerating room 3 and the vegetable room 4 are vertically partitioned by a first heat insulating partition wall 8, and the vegetable room 4, the ice making room 5, and the upper freezing room 6 are separated from each other by a second heat insulating partition wall 8. It is partitioned up and down by 9, and the ice making chamber 5, the upper freezing chamber 6, and the lower freezing chamber 7 are partitioned by a third heat insulating partition wall 10. The ice making chamber 5 and the upper freezing chamber 6 are partitioned by a vertical partition wall 11.

Although not shown, a door for opening and closing each storage chamber is provided on the front surface of the refrigerator body 1. Among them, the door of the refrigerator compartment 3 is a hinge opening / closing type, and the doors of the vegetable compartment 4, the ice making chamber 5, the upper freezer compartment 6 and the lower freezer compartment 7 are drawer type doors in which a storage container is connected to the back side. ing. An automatic ice making device is provided in the ice making chamber 5. Further, a cooling mechanism including a refrigeration cycle, a cooler circulation mechanism, and the like is incorporated in the refrigerator main body 1. As is well known, the refrigeration cycle is configured by connecting a compressor, a condenser, a throttle device, an evaporator and the like in a closed loop shape by a refrigerant pipe.

Then, among the refrigerant pipes constituting the refrigeration cycle, the high temperature portion downstream of the condenser is arranged along the inner surface of the side wall of the heat insulating box 2 (the back surface of the outer box described later) in a serpentine shape, for example. It is arranged along the peripheral flange portion of the refrigerator main body 1 and the front surface portions of the heat insulating partition walls 8 to 11 and functions as a heat radiating pipe 12 for preventing dew condensation. At this time, although not shown in detail, each of the heat insulating partition walls 8 to 11 is configured by attaching a front cover to the front surface of the partition wall main body, and is formed between the front end surface portion of the partition wall main body and the back surface of the front cover. , The heat radiating pipe 12 drawn out from the heat insulating box 2 is arranged together with an iron plate for adsorbing the gasket and the like.

Next, the heat insulating box 2 will be described with reference to FIGS. 2 to 6. As shown in part in FIGS. 2 and 3, the heat insulating box 2 is formed by connecting an outer box 13 made of steel plate and an inner box 14 made of plastic, and in a space formed by them, for example, urethane as a heat insulating material. It is configured by filling foam 15. Among them, as shown in FIGS. 2 and 3, the inner box 14 integrally has a flange portion 16 bent outward at a substantially right angle on the front side of the heat insulating box body 2. The flange portion 16 is inserted and coupled between the first folded portion 18 and the second folded portion 19 of the outer box 13 described below.

2 to 5 show a side plate portion on the right side of the outer box 13, which will be referred to as a side plate 13 below. The side plate 13 has a flange portion 17 that is bent inward at a substantially right angle along the front side portion and is arranged on the front surface of the heat insulating box body 2. At the same time, the first folded-back portion 18 and the second folded-back portion 18 and the second folded-back portion 18 and the second folded-back portion are continuously folded back from the tip side portion of the flange portion 17 so as to reciprocate in a U-shape when viewed from above on the back surface side of the flange portion 17. It has a folded-back portion 19. The tip of the second folded-back portion 19 is bent slightly obliquely when viewed from the upper surface.

Then, as shown in FIG. 4A, a notch 20 for drawing out the heat radiating pipe 12 is formed in the second folded-back portion 19 of the side plate (outer box) 13. The notch portion 20 has a substantially rectangular shape that is long in the vertical direction, and is provided so as to open at the tip of the second folded portion 19 while slightly expanding. The cutout portion 20 is a portion corresponding to each of the heat insulating partition walls 8 to 10, that is, a portion in which the heat radiating pipe 12 is pulled out from the inside of the heat insulating box 2 to the front side of the heat insulating partition walls 8 to 10 to the left. A predetermined width (length in the vertical direction) that is located at the left end side of the heat insulating partition wall 8 to 10 after being pulled out and is folded back in a U shape and returns from the right side, and allows both of them to pass through. Is formed of.

Although not shown in detail, the heat radiating pipe 12 extends from the machine room portion at the bottom of the refrigerator body 1 in a serpentine manner along the inner surface (back surface) of the side plate 13, and then shown in FIGS. 1 and 2. As shown in the above, the inner surface side of the flange portion 17 (the corner portion formed by the side plate 13 and the flange portion 17) is lowered from the upper portion of the side plate 13, and the first heat insulating partition wall 8 portion is bent at a right angle to the left. It is pulled out from the notch 20 through the front surface of the flange 16 of the inner box 14. The heat radiating pipe 12 is pulled out to the left to extend the front surface portion of the first heat insulating partition wall 8, and then is folded back and returned from the notch portion 20 to the inside of the flange portion 17.

The heat radiating pipe 12 descends in the flange portion 17 again, is pulled out to the left at the second heat insulating partition wall 9, and then is folded back. Is returned to, extends to the right, and returns to the inside of the flange portion 17. Further, in the third heat insulating partition wall 10 portion, it is arranged such that it is pulled out to the left and then folded back. At this time, the heat radiating pipe 12 is partially fixed to the back surface side of the side plate (outer box) 13 by welding or brazing in advance, and in that state, the side plate (outer box) 13 and the inner box 14 are combined. It has become so.

By the way, in the present embodiment, as shown in FIGS. 3, 4 (b) and 5, a gap portion formed by the notch 20 of the second folded-back portion 19 is provided inside the side plate 13. The closing member 21 is provided so as to close from the inside. As shown in FIG. 6, the closing member 21 is a plastic support plate 22, a sponge-like member 23 mounted on the surface side of the support plate 22 (the surface facing left in FIG. 3 and the like), and a support plate 22. It is configured to include an arm portion 24 integrally provided at both ends and a double-sided tape 25 as an adhesive member provided on the back surface side of the support plate 22.

Among them, the support plate 22 has a rectangular thin plate shape that is long in the vertical direction, and its longitudinal dimension is larger than the vertical dimension of the notch portion 20. The sponge-like member 23 is formed of a foam of soft synthetic resin into a rectangular parallelepiped block extending in the vertical direction, and is attached to the surface of the support plate 22 by adhesion or the like. As the sponge-like member 23, a soft tape having a large thickness can be adopted. As shown in FIGS. 3 and 5B, the sponge-like member 23 is elastically adhered to the left side surface in the second folded-back portion 19 around the notch portion 20. There is.

The arm portion 24 extends forward from the right side portions of the upper and lower end portions of the support plate 22 on the outside of both end faces of the sponge-like member 23, and further extends slightly diagonally to the left, and the tip portion thereof has a right rear portion. The hooks 24a are integrally formed so as to be rounded in the direction. The hooks 24a of each of these arm portions are configured to be hooked on the front end side of the second folded-back portion 19 at the upper and lower portions of the notch portion 20. The double-sided tape 25 is provided for adhering the back surface of the support plate 22 to the inner surface of the side plate 13.

The closing member 21 configured in this way is attached to the side plate (outer box) 13 after the heat radiating pipe 12 is attached (temporarily fixed) to the side plate (outer box) 13 and before being connected to the inner box 14. Can be installed. When attaching the closing member 21, first, the hooks 24a are arranged so as to be hooked on the front ends of the upper and lower portions of the notch portion 20 in the second folded-back portion 19. At this time, as shown in FIG. 5A, in a state where the hook 24a is simply hooked on the second folded-back portion 19, the sponge-like member 23 is separated from the notch portion 20 and the support plate 22 The back surface is also diagonally separated from the inner surface of the side plate 13.

Therefore, from the state of FIG. 5A, the closing member 21 is rotated in the direction of arrow A in FIG. 5B with the hooked portion of the hook 24 as a fulcrum. As a result, as shown in FIG. 5B, the sponge-like member 23 is positioned so as to close the notch 20, and the back surface of the support plate 22 is adhered to the inner surface of the side plate 13 by the double-sided tape 25. The closing member 21 can be attached. After that, the outer box 13 and the inner box 14 are combined to fill the urethane foam 15. As is well known, the urethane foam 15 is filled by arranging the assembly of the inner box 14 and the outer box 13 in the foam mold, injecting the urethane stock solution into the foam, and foaming and curing the urethane foam 15.

Next, the action / effect of the above configuration will be described. In assembling the heat insulating box 2 in the present embodiment, when the heat radiating pipe 12 is attached to the back surface side of the side plate (outer box) 13, a part of the heat radiating pipe 12 is the second on the back surface side of the flange portion 17. It is pulled out through the notch 20 formed in the folded-back portion 19. Then, by attaching the closing member 21 to the side plate 13, the sponge-like member 23 of the closing member 21 is elastically brought into close contact with the second folded-back portion 19 around the notch portion 20, and the notch is formed. The gap formed by the portion 20 is closed.

After that, the side plate (outer box) 13 and the inner box 14 are combined, and the urethane foam 15 is filled in the space formed by the inner box 14 and the outer box 13. When the urethane foam 15 is filled, the gap formed by the notch 20 is closed by the sponge-like member 23, so that the urethane stock solution is prevented from leaking from the gap. At the same time, it is possible to prevent heat leakage from the gap due to the notch 20 when used as a refrigerator.

At this time, unlike the conventional method of filling the gap formed by the notch portion by applying melt, the closing member 21 can be simply attached, and the assembling work becomes extremely easy. Therefore, according to the first embodiment, the second folded-back portion 19 of the outer box 13 is provided with a notch portion 20 for pulling out the heat radiating pipe 12 outside the heat insulating box body 2, and the cut portion 20 is provided. Although it is possible to easily perform the work of closing the gap of the notch portion 20, it is possible to obtain an excellent effect that heat leakage from this portion can be effectively prevented.

Further, in particular, in the present embodiment, the closing member 21 is provided with the sponge-like member 23 and the double-sided tape 25 on both the front and back surfaces of the support plate 22, and the upper and lower portions of the notch portion 20 of the second folded portion 19 are provided. The arm portion 24 having the hook 24a to be hooked is integrally provided. As a result, the sponge-like member 23 can be held by the support plate 22, and the hook 24a facilitates the positioning work and the mounting work at the time of mounting the closing member 21.

At this time, in the present embodiment, as shown in FIG. 5, the sponge-like member 23 is separated from the notch 20 when the closing member 21 is hooked on the second folded-back portion 19 with the hook 24a. From that state, the sponge-like member 23 is positioned so as to close the notch portion 20 by rotating the hook 24a portion as a fulcrum. As a result, after hooking the hook 24a, the closing member 21 can be rotated to be easily assembled, and the gap of the notch portion 20 can be reliably closed. Further, in the present embodiment, the closing member 21 is adhered to the inner surface of the side plate (outer box) 13 by the double-sided tape 25 provided on the back surface side of the support plate 22. As a result, the closing member 21 can be easily attached.

Further, even if the heat radiating pipe 12 is displaced from the predetermined position and is about to pop out, the closing member 21 can push the heat radiation pipe 12 to a position close to the predetermined position, so that dew protection can be reliably performed. it can. Although not shown, the closing member 21 may be brought into contact with the heat radiating pipe 12 in order to hold the heat radiating pipe 12 at a predetermined position.

(2) Second, Third Embodiment, Other Embodiments FIG. 7 shows the second embodiment and shows the configuration of the closing member 31. The closing member 31 of the second second embodiment is different from the closing member 21 of the first embodiment in addition to the configuration including the support plate 22, the sponge-like member 23, the arm portion 24, and the double-sided tape 25. The soft tape 32 is provided at a portion on the side where the heat radiation pipe 12 is arranged.

The soft tape 32 has a plate shape slightly thinner than the sponge-like member 23, and the back surface side is an adhesive surface. The soft tape 32 covers the entire lower surface side of the sponge-like member 23 in FIG. 7 of the closing member 31, and is bent and arranged on the back surface side of the support plate 22 so as to form an L-shaped cross section. It is adhered to the member 23 and the support plate 22. As a result, the surface side of the soft tape 32 is pulled out through a portion of the heat radiating pipe 12 that is bent through the corner portion formed by the side plate 13 and the flange portion 17 and a portion that is bent and is drawn through the notch portion 20. It comes into close contact with the part.

Therefore, according to the second embodiment, by additionally providing the closing member 31 with the soft tape 32, the gap between the sponge-like member 23 of the closing member 31 and the heat radiating pipe 12 is further filled. , Leakage of urethane foam 15 from that portion and heat leakage can be further prevented. At the same time, the soft tape 32 elastically adheres to the heat radiating pipe 12, so that the heat radiating pipe 12 itself or the portion in contact with the heat radiating pipe 12 can be protected.

FIG. 8 shows a third embodiment, and the difference from the first embodiment is that the heat radiating pipe 12 is drawn out through the notch 20 and a heat insulating box in the vicinity thereof. The soft tape 41 is provided at a portion that comes into contact with any of the two. According to this third embodiment, the soft tape 41 is used to prevent leakage and heat leakage of the urethane foam 15 between the heat radiating pipe 12 and any part of the heat insulating box 2 with which the heat radiating pipe 12 abuts. At the same time, it is possible to protect the heat radiating pipe 12 itself or any part of the heat insulating box 2 with which the heat radiating pipe 12 comes into contact.

Although not shown, as another embodiment, a soft tape may be provided at a portion of the inner box flange portion 16 of the inner box 14 where the heat radiating pipe 12 is arranged. .. According to this, the gap between the inner box flange portion 16 and the heat radiating pipe 12 is filled with the soft tape, and urethane leakage and heat leakage from that portion can be prevented, and the heat radiating pipe 12 or the heat radiating pipe 12 or The inner box flange portion 16 can be protected.

Further, the closing members 21 and 31 have been described by taking as an example a substantially rectangular parallelepiped shape having corners, but urethane is in contact between the second folded-back portion 19 and the outer box (side plate) 13. It suffices if the leakage can be prevented, and a C surface may be formed at the corner portion on the heat radiation pipe 12 side so that the pipe can be smoothly attached when rotating in the direction of arrow A in FIG.

In addition, the overall configuration of the refrigerator body 1, such as the number and arrangement of each storage chamber, the configuration of the heat insulating box 2 and the heat insulating partition walls 8 to 11, and the overall structure, shape, and material of the closing members 21 and 31 also deviate from the gist. Various changes can be made within the range that does not occur. Some of the embodiments described above are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

In the drawing, 1 is the refrigerator body, 2 is the heat insulating box body, 8 to 10 is the heat insulating partition wall, 12 is the heat dissipation pipe, 13 is the outer box (side plate), 14 is the inner box, 15 is the urethane foam (heat insulating material), 16 Is the inner box flange part, 17 is the flange part, 18 is the first folded part, 19 is the second folded part, 20 is the notch part, 21 and 31 are the closing members, 22 is the support plate, and 23 is the sponge-like member. , 24 is an arm portion, 24a is a hook, 25 is a double-sided tape (adhesive member), and 32 and 41 are soft tapes.

Claims (6)

A heat insulating box body formed by filling a heat insulating material between the outer box and the inner box is provided, and a heat insulating partition wall for partitioning the inside of the heat insulating box body is provided along the inner surface of the outer box inside the heat insulating box. It is a refrigerator with a heat dissipation pipe.
The side plate of the outer box has a flange portion that bends to the front side along the front side portion, and is folded back in a U shape continuously from the tip end portion of the flange portion to the back surface side. It has 1st and 2nd folding parts,
The side front end of the inner box has an inner box flange portion that is inserted between the first and second folded portions.
A notch for pulling out the heat radiating pipe toward the heat insulating partition wall through the outer surface of the inner box flange portion is predetermined in the vertical direction at a position corresponding to the heat insulating partition wall in the second folded-back portion. Formed in width,
A closing member having a sponge-like member elastically adhered to the second folded-back portion is provided around the notch portion so as to close the gap formed by the notch portion from the inside .
The closing member is configured to include the sponge-like member on the surface side of a plastic support plate that is vertically longer than the notch.
The support plate is a refrigerator integrally having hooks hooked on the upper and lower portions of the notch portion at the front end of the second folded portion. In the closing member, when the hook is hooked on the second folded portion, the sponge-like member is separated from the notch portion, and from that state, the hook portion is used as a fulcrum to rotate. The refrigerator according to claim 1, wherein the sponge-like member is positioned so as to close the notch. The refrigerator according to claim 1 or 2, wherein an adhesive member adhered to the inner surface of the side plate of the outer box is provided on the back surface side of the support plate. The refrigerator according to any one of claims 1 to 3, wherein a soft tape is provided on the closing member at a portion where the heat radiating pipe is arranged. The refrigerator according to any one of claims 1 to 4 , wherein a soft tape is provided on the inner box flange portion of the inner box at a portion where the heat radiating pipe is arranged. Any of claims 1 to 5 , wherein a soft tape is provided at a portion of the heat radiating pipe that is drawn out through the notch and that is in contact with any of the heat insulating boxes in the vicinity thereof. The refrigerator described in item 1.

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