JP2015059690A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which includes a vacuum insulation panel and enables a heat insulation material to easily fill an entire heat insulation region.SOLUTION: A refrigerator according to one embodiment includes an inner box forming a cooling space and an outer box enclosing the inner box from the exterior side. A heat insulation region sandwiched by the inner box and the outer box is filled with a heat insulation material. The refrigerator further includes: a hose serving as a passage of the heat insulation material or a raw material of the heat insulation material when the heat insulation material fills the heat insulation region; and a vacuum insulation panel.

Description

  Embodiments of the present invention relate to a refrigerator.

  The refrigerator main body is formed by an inner box that forms a cooling space and an outer box that surrounds the inner box from the outside. Between the inner box and the outer box is a heat insulating region filled with a heat insulating material. The heat insulating material is filled by integrating the inner box and the outer box to form a heat insulating region, and then injecting the heat insulating material into the heat insulating region from an inlet provided in the outer box. The heat insulating material is generally a foamed synthetic resin and foams in the heat insulating region.

  By the way, when many vacuum heat insulation panels are provided in the heat insulation area | region, since the space between the wall surface of an inner box or an outer box and a vacuum heat insulation panel is narrow, a heat insulating material does not flow easily in a heat insulation area | region. Therefore, it is difficult for the heat insulating material to be filled in the entire heat insulating region.

  Various attempts have been made to solve this problem (see, for example, Patent Document 1). For example, conventionally, there are generally two inlets for the heat insulating material, but attempts have been made to make the inlets four in order to uniformly fill the heat insulating material into the heat insulating region (FIGS. 1 to 5 of Patent Document 1). ). However, if there are four injection ports, four injection heads are required, resulting in a large equipment cost.

JP 2012-237524 A

  The problem to be solved by the present invention is to provide a refrigerator including a vacuum heat insulating panel, in which the heat insulating material is easily filled in the entire heat insulating region.

  The refrigerator of the embodiment includes an inner box that forms a cooling space and an outer box that surrounds the inner box from the outside, and a heat insulating material is filled in a heat insulating region sandwiched between the inner box and the outer box. And it is characterized by providing the hose which becomes a passage of a heat insulating material or its raw material, and a vacuum heat insulating panel in the case of filling with a heat insulating material.

The perspective view seen from the front side of the refrigerator main body of the refrigerator of embodiment (thing which does not show hose 6 in figure). The perspective view seen from the back side of the refrigerator main body of the refrigerator of embodiment (thing which does not illustrate hose 6). The AA sectional view of the refrigerator main part of the refrigerator of an embodiment (thing which does not illustrate urethane foam). BB sectional drawing of the refrigerator main body of the refrigerator of embodiment (thing which does not illustrate urethane foam). Sectional view on the AA line of the refrigerator main body of the refrigerator of the modified example (thing which does not show urethane foam).

  The refrigerator of embodiment is demonstrated based on drawing.

(1) Structure of Refrigerator The refrigerator of the embodiment includes a refrigerator main body 13 that forms a cooling space 10 shown in FIGS. The cooling space 10 is partitioned by a heat insulating partition wall 14 into a refrigerated space 2 located above and a refrigerated space 4 located below when in use.

  Although not shown, in the refrigerated space 2, a plurality of shelves for placing food and a drawer-type container for storing vegetables are arranged. Behind them, an evaporator for generating cool air and a fan for circulating the cool air are arranged. The front opening of the refrigerated space 2 is closed by a kannon door or a drawer door.

  Although not shown, the freezing space 4 is further partitioned to form a freezing room and an ice making room. Behind them, an evaporator for generating cool air and a fan for circulating the cool air are arranged. The front opening of the freezing room or ice making room is closed by a door or a drawer-type door.

  The outer recessed part 3 of the refrigerator main body 13 is located in the back side bottom part of a refrigerator at the time of use, and a compressor etc. are arrange | positioned. The evaporator is cooled by the refrigerant discharged from the compressor.

(2) Structure of the refrigerator main body 13 The refrigerator main body 13 is formed in a box shape whose front is opened by an upper wall 16, a lower wall 17, a rear wall 18, and a side wall 19 which are wall portions. The refrigerator main body 13 is formed by integrating an inner box 11 and an outer box 12 that surrounds the inner box 11 from the outside and forms the outer shell of the refrigerator. A region surrounded by the inner box 11 and the outer box 12 becomes a heat insulating region 50 having heat insulating properties.

  The inner box 11 is made of synthetic resin, and is formed by dividing the refrigerated space 2 and the freezing space 4 opened forward by a heat insulating partition wall 14. A plurality of holes are formed in the inner box 11. This hole becomes an air vent hole when the heat insulating region 50 is filled with the heat insulating material. Therefore, this hole is formed at a place where air is likely to remain at the end when the heat insulating region 50 is filled with the heat insulating material. Although not shown, in the case of this embodiment, a plurality of inner boxes 11 are formed in portions constituting the upper wall 16, the lower wall 17, and the rear wall 18.

  The outer box 12 is made of a metal such as steel and has a rectangular parallelepiped opening forward. A heat insulating material that opens from the rear wall 18 to the front at the corner portion of the outer box 12 where the rear wall 18 and the side wall 19 intersect and in the center in the longitudinal direction (height direction when used). An injection port 52 through which the raw material can be injected is formed. The inlet 52 is closed with a cap.

  A vacuum heat insulating panel 5 having high heat insulating properties is provided at a predetermined location of the heat insulating region 50 in contact with the outer box. Although the specific structure of the vacuum heat insulation panel 5 used is not limited, For example, a rectangular parallelepiped container is filled with glass wool etc., and the inside is exhausted. The place where the vacuum heat insulating panel 5 is provided is not limited, but in this embodiment, the vacuum heat insulating panel 5 is placed inside the upper wall 16, the lower wall 17, the rear wall 18, and the side wall 19. However, the vacuum heat insulating panel 5 includes the periphery of the corner where the walls intersect, the periphery of the front opening 21 of the refrigerator body 13, and the periphery of the portion where the wall and the heat insulating partition wall 14 intersect, It has been avoided. Inside the upper wall 16 and the lower wall 17, one vacuum heat insulation panel 5 is placed. Inside the rear wall 18 and the side wall 19, two vacuum heat insulation panels 5, one sheet below the heat insulation partition wall 14 and one sheet above the injection port 52, are placed.

  As shown in FIGS. 3 and 4, hoses 6 are respectively provided from the two inlets 52 to the inside of the heat insulating region 50. As will be described later, the hose 6 becomes a passage for urethane foam and its raw material. The opening 60 on the inlet side of the hose 6 is connected to the inlet 52. The hose 6 extends forward (in the direction of the opening 21) from the injection port 52 in the vicinity of the corner where the rear wall 18 and the side wall 19 intersect. Then, it is bifurcated at a position slightly rearward (in the direction opposite to the direction of the opening 21) in the thickness direction in the rear wall 18, and the rear wall 18 is directed from the branched position toward the upper wall 16 and the lower wall 17, respectively. It extends parallel to the rear wall 18 and the side wall 19 along the corner where the side wall 19 and the side wall 19 intersect. The hose 6 is extended toward the upper wall 16 and the lower wall 17 and is bent toward the front opening 21 side, and the bent tip is a tip. However, the tip of the hose 6 is on the rear side of the vacuum heat insulating panel 5 in the side wall 19. The tip of the hose 6 is an opening 61 on the side opposite to the injection port. One hose 6 has a total of three openings, that is, an opening 60 on the inlet side and two openings 61 on the side opposite to the inlet. In addition, the hose 6 should just be a thing which a fluid can flow through the inside, and a material and a cross-sectional shape are not limited.

  The heat insulating region 50 is filled with the heat insulating material after the vacuum heat insulating panel 5 and the hose 6 are provided as described above. Although the kind of heat insulating material is not limited, For example, foaming synthetic resin is used. In this embodiment, a urethane foam is used.

(3) The refrigerator main body 13 and the manufacturing method of a refrigerator The refrigerator main body 13 is manufactured as follows.

  First, the vacuum heat insulation panel 5 and the hose 6 are fixed to the outer box 12. The fixed position is the position described above. The outer box 12 is combined with the inner box 11 to form a heat insulating region 50 sandwiched between the inner box 11 and the outer box 12.

  Next, urethane foam is filled into the heat insulating region 50. When filling, the refrigerator body 13 is placed with the front opening 21 down and the rear wall 18 up. In this way, the two inlets 52, 52 face upward. In this state, polyol and isocyanate, which are raw materials for urethane foam, are injected from the two injection ports 52 and 52. Then, while these raw materials are mixed and foamed, they proceed through the hose 6 and become urethane foam and exit from the opening 61 on the side opposite to the injection port into the heat insulating region 50. The urethane foam is filled in the heat insulating region 50 including the space between the inner box 11 and the vacuum heat insulating panel 5, and accordingly, the air present in the heat insulating region 50 is out of the heat insulating region 50 through the holes of the inner box 11. Discharged. When filling of the urethane foam into the heat insulating area 50 is completed, the cap of the inlet 52 is closed while the hose 6 remains in the heat insulating area 50. At this time, the opening 60 on the inlet side of the hose 6 may remain connected to the inlet 52 or may be disconnected from the inlet 52. In the completed state, it is desirable that the hose 6 is filled with urethane foam.

  Equipment necessary for generating cold air such as a compressor and an evaporator in the refrigerator main body 13 completed as described above, members necessary for storing food such as shelves and drawer-type containers, opening of the refrigerator main body 13 A door, other necessary members, etc. are attached to complete the refrigerator.

(4) Effect According to the above embodiment, the urethane foam is inserted into the heat insulation region 50 through the hose 6 even in the heat insulation region 50 where the urethane foam does not easily flow because of the vacuum heat insulation panel 5. Therefore, urethane foam is easily filled in the entire heat insulating region. Therefore, the heat insulation fall of the refrigerator main body 13 can be prevented.

  Moreover, the hose 6 is provided in the heat insulation area | region 50 in the assembly stage of the refrigerator main body 13, and also remains in the heat insulation area | region 50 as it is after filling with urethane foam. Therefore, there is no need to take in and out the hose 6 from the inlet 52.

  In addition, even if there are two inlets 52 provided in the outer box 12, there are a total of four urethane foam outlets in the heat insulating region 50, so the entire inside of the heat insulating region 50 is uniformly filled with urethane foam. can do. In addition, in order to uniformly fill the urethane foam in the heat insulating region 50 as described above, it is not necessary to increase the number of injection ports 52. Therefore, since there is no need to increase the number of injection heads of the urethane foam raw material injection facility (portions applied to the injection port 52 in order to inject the urethane foam raw material into the heat insulating region 50), there is no equipment cost.

  Further, the hose 6 is a corner portion where the rear wall 18 and the side wall 19 cross each other and a portion on the rear wall 18 side of the vacuum heat insulation panel 5, that is, a place sandwiched between the vacuum heat insulation panel 5 and the inner box 11 is excluded. It is provided at the place. Therefore, the hose 6 is not crushed by the vacuum heat insulating panel 5 and the flow of the urethane foam is not hindered.

(5) Modification Example The arrangement of the hose in the heat insulating region 50 is not limited to that of the above embodiment. As another arrangement of the hose, for example, the one shown in FIG. 5 can be considered. The hose 7 of the embodiment shown in FIG. 5 extends from the inlet 52 toward the front opening 21 and is branched in two directions on the front opening 21 side from the vacuum heat insulating panel 5 in the side wall 19. In the direction perpendicular to the lower wall 17, it extends through a portion closer to the front opening 21 than the vacuum heat insulating panel 5. The extended tip is an opening 71 on the side opposite to the injection port. Even in this case, the urethane foam is uniformly filled in the heat insulating region 50. The arrangement of the hose 7 is preferable in that it avoids a place sandwiched between the vacuum heat insulating panel 5 and the inner box 11 side.

  One or more openings may be further provided between the opening on the inlet side of the hose and the opening on the side opposite to the inlet. Further, the hose may be branched in three or more directions, and openings may be provided at the branched ends. Further, it may be further branched at the branch destination. In this way, since the urethane foam goes out from more places into the heat insulation region 50, the urethane foam can be uniformly filled in the heat insulation region 50, and the wall surface of the inner box 11 and the vacuum insulation The urethane foam can be filled up to the space between the panels 5. In particular, when the opening on the anti-injection side of the hose faces between the wall surface of the inner box 11 and the vacuum heat insulating panel 5, the portion can be sufficiently filled with urethane foam.

  Further, the hose may be provided with only one opening on the inlet side and one on the anti-injection side. Even if there is only one opening on the side of the anti-injection port, the urethane foam is inserted into the heat insulation region 50 through the hose, so that the entire heat insulation region is easily filled with the urethane foam.

  The vacuum heat insulation panel 5 may be provided on the inner box 11 side. In that case, a gap is formed on the outer heat insulation panel 12 side of the vacuum heat insulation panel 5, but it is desirable that no hose is provided in this place. This is to prevent the hose from being crushed by the vacuum heat insulating panel 5 and hindering the flow of the urethane foam.

  The above embodiment is an illustration and the scope of the invention is not limited to this. The above embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. The above embodiments and modifications thereof are included in the inventions described in the claims and their equivalents.

DESCRIPTION OF SYMBOLS 10 ... Cooling space, 11 ... Inner box, 12 ... Outer box, 13 ... Refrigerator main body, 14 ... Heat insulation partition wall, 16 ... Upper wall, 17 ... Lower wall, 18 ... Rear wall, 19 ... Side wall, 2 ... Refrigerated space, DESCRIPTION OF SYMBOLS 21 ... Front opening, 3 ... Outer side recessed part, 4 ... Freezing space, 5 ... Vacuum insulation panel, 50 ... Heat insulation area, 52 ... Inlet, 6 ... Hose, 60 ... Inlet side opening, 61 ... Anti-injection side Opening, 7 ... hose, 71 ... Opening on the anti-injection side

Claims (3)

  An inner box that forms a cooling space and an outer box that surrounds the inner box from the outside, and a heat insulating material is filled in the heat insulating region sandwiched between the inner box and the outer box, and filling of the heat insulating material A refrigerator comprising a heat insulating material or a hose that becomes a passage for the raw material, and a vacuum heat insulating panel.   The refrigerator according to claim 1, wherein one of the hoses has three or more openings.   The refrigerator according to claim 1 or 2, wherein the hose is provided in a place excluding a place sandwiched between the vacuum insulation panel and an inner box and a place sandwiched between the vacuum insulation panel and an outer box.

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