JP2012007776A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator for enhancing heat insulation performance of an inside of the refrigerator.SOLUTION: A heat insulation housing 12 is provided in the refrigerator 11 comprising an outer housing 17 composed of a metal, an inner housing 18 composed of resin, and a heat insulation material 19 filled between the outer housing 17 and the inner housing 18. The refrigerator also comprises a back face plate 15 for forming a back face of the heat insulation housing 12, a bottom face plate 16 forming a bottom face, and a base member 20 connecting the back face plate 15 and the bottom face plate 16 composed of resin having an evaporation tray 32 for storing melted frost in the refrigerator 11 inside so that heat conduction generated in a machine chamber through the base member 20 to the inside of the refrigerator can be reduced to enhance heat insulation and energy saving becomes excellent.

Description

  The present invention relates to a machine room formed of a resin material in a lower rear portion of a refrigerator main body.

  Conventionally, in this type of refrigerator, the top surface portion of the machine room that houses the functional components of the refrigerator formed at the lower rear of the refrigerator body is formed of a concave resin, and the pedestal is composed of a metal component such as an iron plate ( For example, see Patent Document 1).

  FIG. 7 is a perspective view of a main part of a machine room provided at the lower back of a conventional refrigerator described in Patent Document 1. As shown in FIG. 7, a machine room formed by an outer case 1, a pedestal 2 made of metal, and a resin member 3 constituting a top surface, a back surface, and a right side surface arranged on the pedestal 2. 4 and a compressor 5 disposed in the machine room 4.

JP 2001-41635 A

  However, in the conventional configuration, since the machine room is formed of a resin member, heat generated from the compressor disposed in the machine room is reduced from being conducted outside the machine room, and the temperature inside the refrigerator is reduced. It is effective for energy saving to prevent the rise, but because the compressor is installed on the pedestal made of metal parts, the heat in the machine room is transferred from the pedestal to the refrigerator cabinet and the temperature in the cabinet rises. May be affected.

  This invention solves the said conventional subject, and it aims at providing the refrigerator which improved the heat insulation from a machine room in a store | warehouse | chamber.

  In order to solve the above-described conventional problems, the refrigerator of the present invention is a heat insulating unit including a metal outer box, a resin inner box, and a heat insulating material filled between the outer box and the inner box. In a refrigerator including a box, a back plate that forms a back surface of the heat insulation box, a bottom plate that forms a bottom surface, and a machine room formed in a lower portion of the back plate, the machine room is made of a resin base. A base member is formed, and the upper part of the base member is connected to the back plate and the lower part is connected to the bottom plate.

  Accordingly, an object of the present invention is to provide a refrigerator that reduces heat conduction into the cabinet and further improves the heat insulation performance.

  Since the refrigerator of the present invention can reduce heat conduction into the cabinet and further improve the heat insulation performance, it can provide a refrigerator with excellent energy saving performance.

Schematic sectional view of the refrigerator in the first embodiment of the present invention. Schematic of the refrigerator bottom in Embodiment 1 of the present invention Schematic of the first handle in Embodiment 1 of the present invention Schematic of the base member in Embodiment 1 of this invention Schematic at the time of conveyance of the refrigerator in Embodiment 1 of this invention Schematic at the time of conveyance of the refrigerator in Embodiment 1 of this invention Schematic diagram of the lower rear structure of a conventional refrigerator

  According to a first aspect of the present invention, there is provided a heat insulating box comprising a metal outer box, a resin inner box, and a heat insulating material filled between the outer box and the inner box, and a rear surface of the heat insulating box. A refrigerator comprising: a back plate that forms a bottom plate; a bottom plate that forms a bottom surface; and a machine room formed at a lower portion of the back plate, wherein the machine room is formed of a resin base member, and the base member The upper part is connected to the back plate and the lower part is connected to the bottom plate. As a result, the heat generated in the machine room is difficult to be transmitted into the refrigerator cabinet, so that the heat insulation can be enhanced, and a highly energy-saving refrigerator can be provided.

  In the second aspect of the invention, in particular, in the first aspect of the invention, since the evaporating dish for collecting and evaporating at least defrosted water is disposed in the machine room, the evaporating dish is housed in a resin base member. Therefore, the heat generated in the evaporating dish is difficult to be transmitted into the refrigerator cabinet, so that the heat insulation can be improved, and a refrigerator with high energy saving can be provided. The third invention, in particular, in the first or second invention, comprises a folded portion at the lower part of the base member, connects the folded portion and the bottom plate, and the folded portion is filled with a heat insulating material; did. Thereby, since a heat insulating material can be filled between the bottom surface portion and the folded portion of the base member, it is possible to ensure strength and reduce distortion of the suspension.

  In a fourth aspect of the invention, in particular, in the third aspect of the present invention, a grip portion is formed on the turned-up portion so that a hand can be hooked during transportation. As a result, the handle portion can be configured by the resin base member, so that a complicated shape can be easily formed, and a shape that can be easily held by the carrier can be configured.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the base member is a member having a substantially U-shaped cross section in which a top surface portion, a back surface portion, and a bottom surface portion are integrally formed. As a result, the machine room space can be configured only by the base member, and since the base member is made of resin, a complicated shape can be formed and wasteful space can be reduced. An UP refrigerator can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a schematic cross-sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a schematic view of the bottom of the refrigerator according to Embodiment 1 of the present invention, and FIG. 3 is an outline of a first handle portion according to Embodiment 1 of the present invention. 4 and 4 are schematic views of the base member according to Embodiment 1 of the present invention.

  1-4, the refrigerator 11 is comprised from the heat insulation box 12 and the door 13 attached so that opening and closing was possible.

  The refrigerator 11 is formed of a plurality of storage chambers 44. Specifically, a refrigerator compartment 44a, a switching chamber 44b, a vegetable compartment 44c, and a freezer compartment 44d are formed in order from the top.

The heat insulation box 12 forms a metal top plate 14 formed by integrally bending the top surface portion and both side surface portions of the outer shell of the refrigerator 11, a metal back plate 15 forming a back surface portion, and a bottom surface portion. A metal bottom plate 16 that is fixed by welding or fixing with screws or the like, and a resin inner box 18 that forms a space for storing food or the like. ,
A heat insulating material 19 is filled between the outer box 17 and the inner box 18 to form an outer shell.

  A resin base member 20 for connecting and fixing the back plate 15 and the bottom plate 16 is provided behind the bottom surface of the refrigerator 11. The base member 20 is composed of a substantially U-shaped member having a top surface portion, a back surface portion, and a bottom surface portion. The back plate 15 and the top surface portion at the top of the base member 20 are connected and fixed. Further, the bottom surface portion of the base member 20 is integrally provided with a folded portion 21 so that the folded portion 21 at the lower portion of the base member 20 and the bottom plate 16 of the refrigerator 11 are connected and fixed.

  Therefore, as shown in FIG. 1, the folded portion 21 communicates with a space formed between the inner box 18 and the bottom plate 16.

  The heat insulating material 19 is filled between the inner box 18 and the connected back plate 15, base member 20, and bottom plate 16. Further, as described above, the folded portion 21 includes the inner box 18 and the bottom plate 16. The heat insulating material 19 is filled between the bottom surface portion of the base member 20 and the folded portion 21.

  Further, as shown in FIG. 4, since the base member 20 forms a side wall 20a, the heat insulating material 19 is also filled between the side wall 20a and the outer top side plate 14.

  Thereby, even if the resin base member 20 is formed in the lower rear portion of the refrigerator 11, the rigidity and strength with respect to the weight of the refrigerator 11 can be secured.

  Further, since the folded portion 21 is formed, the wall thickness dimension of the heat insulating material 19 filled in the lower part of the base member 20 should be thinner than the wall thickness dimension between the bottom surface portion of the freezing chamber 44d and the bottom surface plate 16. Can do.

  It can reduce that the heat which generate | occur | produced in the base member 20 is transmitted to the inside of a refrigerator store | warehouse | chamber, and influences the temperature rise in a store | warehouse | chamber.

  The heat insulation box 12 is provided with a first machine chamber 22 in a recessed portion in which a rear portion of the top surface is recessed. The first machine chamber 22 accommodates a compressor 23, a condenser 24, a condenser cooling fan (not shown), and the like. The pedestal 22a that houses the compressor 23, the condenser 24, the condenser cooling fan (not shown), and the like is made of resin. Therefore, the heat generated from the functional component in the resin-made first machine chamber 22 is transmitted through the pedestal 22a, and heat intrusion into the adjacent refrigerator compartment 44a through the heat insulating material 19 can be reduced.

  On the back surface of the refrigerator 11, a cooling chamber 25 is provided between the outer box 17 and the inner box 18. In the cooling chamber 25, a cooler 26, a forced convection type internal fan 27, a radiant heater 28 that defrosts the frost attached to the cooler 26 during cooling, and the radiant heater 28 is attached to the cooler 26 by heating. The drain pan 29 receives water from which the defrosted frost has been defrosted, and the drain pipe 30 for draining the water received by the drain pan 29. Further, the water drained from the drain pipe 30 is provided with a resin evaporating dish 32 in the resin second machine chamber 31 constituted by the base member 20, and the evaporating dish 32 is provided with a cooling device 26. It is configured to accumulate frost water.

  The second machine chamber 31 is arranged behind the freezing chamber 44d.

As described above, the folded portion 21 is filled with the heat insulating material 19, so the lower portion of the base member 20, that is, the lower portion of the second machine chamber 31 is also filled with the heat insulating material 19 and embedded. The strength of the machine room 31 can be secured. Further, a condenser pipe 33 is disposed from the condenser 24 so as to pass through the inside of the evaporating dish 32, and a part of the condensing pipe 33 is disposed so as to be immersed in the evaporating dish 32. A part of the immersed condensation pipe 33 is configured as an immersion pipe 34.

  Moreover, in order to use when transporting the refrigerator 11, the left and right front surfaces of the bottom surface of the refrigerator 11 are provided with a first handle portion 40 having the same shape on the left and right sides, a left first handle portion 40a and a right first handle portion 40b. Is arranged. The first handle portion 40 is formed of a resin, and is provided with a hole portion 41 into which a hand can be inserted. A peripheral portion of the hole portion 41 is provided with a handle portion 42 that can be put in the hand.

  Further, the folded portion 21 of the base member 20 is formed with a second handle portion 43 at a position facing the handle portion 42 provided on the right first handle portion 40b. About the refrigerator 11 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the operation of the refrigeration cycle will be described. The refrigeration cycle is operated by a signal from a control board (not shown) according to the set temperature in the refrigerator, and the cooling operation is performed. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 23 dissipates heat in the condenser 34, the condensing pipe 33, and the immersion pipe 34, condenses and liquefies, and reaches a capillary (not shown). Thereafter, the capillary is depressurized while exchanging heat with a suction line (not shown) to become a low-temperature and low-pressure liquid refrigerant and reach the cooler 26.

  The operation of the internal fan 27 exchanges heat with the air in the storage chamber 44 formed by the inner box, and the refrigerant in the cooler 26 evaporates. Each storage chamber 44 is cooled by distributing low-temperature cold air with a damper (not shown) or the like. The refrigerant exiting the cooler 26 is sucked into the compressor 23 through the suction line.

  After cooling each storage chamber 44 for a certain time, the compressor 23 is stopped and the radiant heater 28 is energized in order to remove frost attached to the cooler 26. Then, the frost adhering to the cooler 26 is melted and dripped onto the drain pan 29 and stays in the evaporating dish 32 through the drain pipe 30.

  After the frost in the cooler 26 is removed, the energization of the radiant heater 28 is finished, and the compressor 23 is operated again. The water staying in the evaporating dish 32 is heated and evaporated by the immersion pipe 34 during the operation of the compressor 23.

  Next, the time when the refrigerator 11 is transported will be described. When transporting the refrigerator 11, as shown in FIG. 5, when transporting the refrigerator 11 by tilting it backward, one person has the upper rear end portions 50 of the refrigerator and the other person has a hole in the first handle 40. It can be carried by inserting a hand into 41.

  Further, as shown in FIG. 6, when the refrigerator 11 is transported while being tilted in the horizontal direction, one person holds the upper end portions 51 on the side of the refrigerator 11, and the other person holds the handle 42 provided on the first handle 40 b. And it becomes transportable by having the 2nd handle part 43. FIG. Here, the second handle portion 43 is provided at a position opposite to the handle portion 42 of the first handle portion 40b provided on the right side when viewed from the front of the refrigerator 11, and the conveying method is such that the right side surface of the refrigerator 11 is on the upper side. Yes.

  Therefore, it is set as the structure which can select arbitrarily the conveyance which inclines back, and the inclination in the horizontal direction. It should be noted that there is no problem even if the second handle portion 43 is formed at a position facing the right first handle portion 40b. Also, by providing it at two locations opposite to the left first handle portion 40a and the right first handle portion 40b, it can be tilted to the left or right when transporting, which improves usability for the transporter. .

  As described above, in the present embodiment, the water accumulated in the evaporating dish 32 by the dip pipe 34 is heated and evaporated, and at the same time, the ambient temperature around the evaporating dish 32 is raised by the heat of the dip pipe 34, and the refrigerator 11. It will conduct heat to the inside of the cabinet and affect the temperature inside the cabinet. However, by adopting a configuration in which the evaporating dish 32 is disposed on the resin base member 20 provided at the bottom of the back surface of the refrigerator 11, the base is made of resin rather than the metal base member. It becomes possible to reduce the temperature effect on the interior due to heat conduction from the base member 20, and a refrigerator with high energy saving performance can be provided.

  Further, the bottom surface portion of the base member 20 includes a folded portion 21, and the folded portion 21 and the bottom plate 16 are connected, and the folded portion 21 is filled with a heat insulating material. Thereby, it becomes possible to make the intensity | strength of the base member 20 strong, and it is possible to reduce distortion of a suspension.

  Moreover, it was set as the structure which formed in the folding | turning part 21 of the base member 20 the 2nd handle part 43 for putting a hand at the time of conveyance. As a result, the grip portion for transporting the refrigerator 11 is generally costly because a method such as a configuration in which a separate part is attached is used, but the resin base member 20 is attached. By disposing, the grip portion can be configured, so that a complicated shape can be easily formed, and a shape that can be easily held by the carrier can be configured.

  Further, since the heat insulating material is filled around the base member and is reinforced by the heat insulating material, the second handle portion 43 can be configured to be safe and secure in terms of strength.

  In addition, the base member 20 is configured by a substantially U-shaped member having a top surface portion, a back surface portion, and a bottom surface portion. As a result, the second machine chamber 31 in which the evaporating dish 32 is stored can be configured only by the base member 20, and since it is the resin base member 20, it is more than forming by performing sheet metal processing using metal. Since a complicated shape can be formed, only a necessary space can be formed, and a useless space can be eliminated, a user-friendly refrigerator with an increased internal volume can be provided.

  In addition, in this Embodiment, although it was set as freezing room 44d in the lowest part, the structure which has vegetable room 44c in the lowest part may be sufficient. Further, the machine room for arranging the compressor 23 and the like is provided at the rear part of the top surface of the refrigerator, but the compressor 23 and the like are arranged on the base member 20 on which the evaporating dish 32 is arranged. There is no problem with the configuration because the object of the present invention can be achieved.

  As described above, the refrigerator according to the present invention can reduce heat conduction from the heat source to the inside of the cabinet, and can be used as a configuration for commercial refrigerators, vending machines, other cooling devices, and the like.

DESCRIPTION OF SYMBOLS 11 Refrigerator 12 Heat insulation box 15 Back plate 16 Bottom plate 17 Outer box 18 Inner box 19 Heat insulating material 20 Base member 21 Folding part 32 Evaporating dish 43 Second handle part

Claims (5)

A heat insulating box made of a metal outer box, a resin inner box, a heat insulating material filled between the outer box and the inner box, and a back plate forming the back surface of the heat insulating box; The refrigerator includes a bottom plate forming a bottom surface and a machine room formed at a lower portion of the back plate, wherein the machine room is formed of a resin base member, and the upper part of the base member is the back plate The lower part is connected to the bottom plate. The refrigerator according to claim 1, wherein an evaporating dish for collecting and evaporating at least defrosted water is disposed in the machine room. The refrigerator according to claim 1 or 2, further comprising a folded portion at a lower portion of the base member, connecting the folded portion and a bottom plate, and filling the folded portion with a heat insulating material. The refrigerator according to claim 3, wherein a grip portion for placing a hand on the folded portion is formed on the folded portion. The refrigerator according to any one of claims 1 to 4, wherein the base member is a member having a substantially U-shaped cross section in which a top surface portion, a back surface portion, and a bottom surface portion are integrally formed.

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