WO2017002345A1

WO2017002345A1 - Refrigerator

Info

Publication number: WO2017002345A1
Application number: PCT/JP2016/003054
Authority: WO
Inventors: 翔太垣内; 智弘藤田; 修平杉本; 美桃子井下
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2015-06-29
Filing date: 2016-06-24
Publication date: 2017-01-05
Also published as: JPWO2017002345A1; CN107709908A

Abstract

Provided is a refrigerator allowing, even in a portion where recesses and protrusions are present, a vacuum insulation material to be disposed without reducing reliability, thereby improving heat insulating properties, and the heat insulating properties in a portion where a component housing chamber is installed are also improved and the heat insulation performance is stabilized, thereby enhancing energy-saving performance and allowing an increase in the internal volume of the refrigerator. This refrigerator is equipped with: heat generating components (17, 15) housed in a component housing chamber (111); and a vacuum insulation material (55) provided between the component housing chamber and a storage chamber (6). The component housing chamber has, on the wall surface thereof, an uneven portion (18) for mounting the heat generating components. A spacer member (21) is disposed on the wall surface on the reverse side of the wall surface provided with the uneven portion (18). The spacer member is equipped with a surface having an uneven shape matching the uneven portion. The surface of the spacer member opposite the surface matching the uneven shape has a substantially planar shape. The vacuum insulation material is installed on the surface having the substantially planar shape. The portion of an inner case (3) or an outer case (2) facing the vacuum insulation material is provided with air release holes (26).

Description

refrigerator

The present invention relates to a refrigerator, and more particularly, to a heat insulating configuration of a main body.

Generally, the main body of a refrigerator is configured by filling a foam heat insulating material between an inner box and an outer box. More recently, a vacuum heat insulating material has been disposed between the inner box and the outer box to enhance heat insulation. In addition, a component storage chamber is provided at an appropriate position of the main body, for example, at the upper rear, and a compressor, a condenser, and the like of a refrigeration cycle that cools a refrigeration chamber in the main body are incorporated in the component storage chamber. For example, see Patent Document 1).

20A and 20B show a cross-sectional configuration of the refrigerator described in Patent Document 1. FIG. A refrigerator 555 shown in FIGS. 20A and 20B has a refrigerator compartment 501, a freezer compartment 502, a vegetable compartment 503, and the like in a main body 500, and a parts storage chamber 504 is provided at the upper rear of the main body 500. In the component storage chamber 504, a compressor 505, a condenser, and the like constituting a refrigeration cycle for cooling the refrigerator compartment 501, the freezer compartment 502, the vegetable compartment 503, and the like are arranged.

The main body 500 includes a vacuum heat insulating material 508 disposed between the inner box 506 and the outer box 507, and is filled with a foam heat insulating material 509 made of foamed urethane or the like, thereby exhibiting heat insulation. .

However, the conventional refrigerator as described above has unevenness formed on the wall surface of the component storage chamber where the compressor and the condenser are installed to attach these components, and a vacuum is applied to the portion where the unevenness is formed. There is a problem that it is difficult to install a heat insulating material.

In other words, if there is unevenness in the part where the vacuum heat insulating material is arranged, there is a risk that this unevenness will contact the vacuum heat insulating material and break the envelope bag of the vacuum heat insulating material. However, there is a problem that the heat insulation inherent to the vacuum heat insulating material cannot be obtained and the reliability is lacking.

For this reason, the uneven part has a heat insulation structure only with foam heat insulating material, and it is easy for heat from the outside to enter, and it is one of the obstacles when efficiently suppressing heat intrusion and improving energy saving It has become.

In addition, in order to reduce heat intrusion from the parts storage room where there is unevenness, the uneven part has the thickness of the foam insulation filled between the inner box and outer box, that is, the wall thickness of the parts storage room. Since the structure is such that it is thicker than the wall thickness of other parts, there arises a problem that the internal volume in the main body is reduced accordingly.

The above-described problems may occur not only in the component storage chamber but also in a part where various parts such as a control unit are provided as long as there are irregularities for installing these parts. In particular, in the case of compressors and condensers, etc., where the parts that require unevenness generate heat and the amount of generated heat is relatively large, the parts storage chamber in which such parts are installed In this case, the influence of the above-described problem is large, which is a major obstacle to improving energy saving and securing the internal volume.

In the refrigerator 555 configured as described above, the vacuum heat insulating material 508 is disposed on any of the side surface, the back surface, and the top surface of the main body 500, but the component storage in which the compressor 505 and the condenser are installed. A space between the chamber 504 and the refrigerator compartment 501 has a heat insulating configuration using only the foam heat insulating material 509.

This is because the component storage chamber 504 itself is narrow and the area between the component storage chamber 504 and the refrigerating chamber 501 is small, so that the portion of the foam heat insulating material 509 where the uneven portion is formed is provided rather than the provision of the vacuum heat insulating material 508. This is because it is preferable in terms of cost performance that the heat insulating structure is made thicker than other portions.

However, in recent years, the demand for energy saving improvement for refrigerators has become more severe, and not only the energy saving promotion by the efficiency of the cooling operation by the compressor, but also the heat insulation of the main body 500 itself is further improved to promote the energy saving. There is a need.

JP 2013-50267 A

The present invention has been made in view of the above points, and even if it is a portion where unevenness exists, it is possible to arrange a vacuum heat insulating material without reducing reliability and to improve heat insulation. The present invention provides a refrigerator that can improve the heat insulation of the part in which the component storage chamber is installed, stabilize the heat insulation performance, and can save energy and increase the internal volume.

Specifically, a refrigerator according to an example of an embodiment of the present invention includes a main body having an inner box and an outer box, a foam heat insulating material disposed between the inner box and the outer box, and a storage provided in the main body. A chamber, a component storage chamber, a heat generating component stored in the component storage chamber, and a vacuum heat insulating material provided between the component storage chamber and the storage chamber. The component storage chamber has a concavo-convex portion for attaching a heat generating component to the wall surface, and a spacer member is provided on the wall surface behind the wall surface provided with the concavo-convex portion. The spacer member has a surface having a shape along the uneven shape of the uneven portion, and a surface opposite to the surface having the shape along the uneven shape of the uneven portion has a substantially planar shape. The vacuum heat insulating material is installed on a surface having a substantially planar shape of the spacer member. In addition, an air vent hole is provided in a portion of the inner box or the outer box facing the vacuum heat insulating material.

Such a configuration can prevent the outer bag of the vacuum heat insulating material from being broken by the uneven portion present on the wall surface of the inner box or the outer box constituting the main body. Moreover, even if it is a part with an uneven | corrugated | grooved part, a vacuum heat insulating material can be installed without impairing reliability, and heat insulation can be improved. Furthermore, the wall thickness of the inner box or the outer box in which the concavo-convex part is formed can also be reduced as compared with the conventional case. In addition, since the air vent hole is provided in the part facing the vacuum heat insulating material of the inner box or the outer box of the main body, the space filled with the foam heat insulating material is narrowed by newly installing the vacuum heat insulating material and the spacer member. Even when the foam insulation material is foam-filled, the air in the foam insulation material filling space flows smoothly toward the air vent hole, and the foam insulation material can smoothly advance in the space while foaming. . Thereby, it can prevent that a void arises in an uneven | corrugated | grooved part, the dispersion | variation in the heat insulation performance of foaming heat insulating material itself can be suppressed, and the heat insulating performance of the wall of the components storage chamber which has an uneven | corrugated | grooved part can be stabilized.

Further, in the refrigerator according to an example of the embodiment of the present invention, a vacuum heat insulating material is disposed between the component storage chamber and the storage chamber of the main body, and the vacuum heat insulating material is stored in the heat generating component installed in the component storage chamber. You may be comprised so that it may have an area larger than the projection surface to the wall surface of a chamber.

With such a configuration, radiant heat from a heat generating component such as a compressor installed in the component storage chamber of the main body can be more reliably insulated by the vacuum heat insulating material, and the heat insulation as the whole main body is improved to improve energy saving. be able to. Moreover, by providing a vacuum heat insulating material between the component storage chamber and the storage chamber, the wall thickness between the component storage chamber and the storage chamber can be made thinner than before, and the internal volume in the main body can be reduced. Can be expanded.

Moreover, the refrigerator according to an example of the embodiment of the present invention may be arranged such that the air vent hole is located substantially at the center portion of the portion facing the vacuum heat insulating material of the inner box or the outer box of the main body. .

With such a configuration, when the foam heat insulating material is filled with foam, the air escapes from the outer peripheral portion of the vacuum heat insulating material toward the central portion over the entire area of the narrow foam heat insulating material filling space facing the vacuum heat insulating material, and foaming of the foam heat insulating material is performed. Therefore, the generation of voids can be suppressed over the entire foam insulation filling space, stabilization of the heat insulation performance is promoted, and energy saving can be improved.

Further, in the refrigerator according to an example of the embodiment of the present invention, the air vent holes are arranged in an annular shape, and an auxiliary heat insulating material may be arranged in a portion surrounded by the air vent holes arranged in an annular shape. .

With such a configuration, even if a void occurs near the center of the air vent hole, the portion where the void is generated is insulated by the auxiliary heat insulating material. It is possible to eliminate this, and it is possible to realize a firm stabilization of the heat insulation performance and to improve the energy saving more reliably.

Further, in the refrigerator according to an example of the embodiment of the present invention, the component storage chamber may be provided at the upper rear of the main body.

With such a configuration, even if a compressor or condenser that has a relatively high temperature is installed in the component storage chamber, heat from the component storage chamber is efficiently insulated without reducing reliability, and The wall thickness can be reduced. Thereby, the energy saving of a refrigerator and the volume expansion effect of a warehouse can be made high.

The refrigerator according to an example of the embodiment of the present invention is arranged such that the component storage chamber is opposed to at least two surfaces of the adjacent storage chamber, the vertical wall surface, and the horizontal wall surface, and the vacuum heat insulating material. May be formed by being substantially bent into an L shape along the at least two surfaces, and may be affixed and fixed to the spacer member.

With such a configuration, heat insulation can be improved on at least two surfaces of the vertical wall (vertical wall) and the horizontal wall (horizontal wall) of the component storage chamber, and the vertical wall and horizontal wall of the component storage chamber respectively. Compared with the case of installing a separate vacuum heat insulating material, productivity can be improved. Therefore, the production cost can be further suppressed. In addition, since the vacuum heat insulating material bent in an L shape is attached and fixed to the spacer member with tape or the like, the foam heat insulating material filling space is not reduced by the spring back, and the foam heat insulating material flows. It is possible to increase the void generation suppression effect by stabilizing the properties, and to more reliably stabilize the heat insulation performance.

Further, the refrigerator according to an example of the embodiment of the present invention is configured such that a convex portion is provided on the outer peripheral portion of the substantially planar surface of the spacer member, and the position of the vacuum heat insulating material is regulated by the convex portion. It may be.

Such a configuration can reliably prevent the vacuum heat insulating material installed on the spacer member from shifting due to the flow and foaming of the foam heat insulating material. In addition, with such a configuration, the air vent hole provided at a position facing the vacuum heat insulating material of the inner box or the outer box is surely substantially at the center of the foam heat insulating material filling space narrowed by the vacuum heat insulating material. Since they can be positioned, generation of voids can be efficiently suppressed. Thereby, heat insulation performance can be stabilized more reliably. In addition, damage bag breakage caused by the movement of the vacuum heat insulating material can be reliably prevented, and the stabilization of the heat insulating performance can be further promoted and the reliability can be improved.

In the refrigerator according to the embodiment of the present invention, the convex portion is formed on the outer peripheral portion of the spacer member, and the surface of the convex portion and the outer surface of the vacuum heat insulating material when installed on the spacer member However, the height of the convex portions may be set so as to form substantially the same surface.

With such a configuration, the foam heat insulating material flowing on the surface of the vacuum heat insulating material flows smoothly, and tends to occur due to a decrease in fluidity that easily occurs when there is a step between the vacuum heat insulating material and the spacer member. Voids can also be suppressed. Therefore, the high heat insulation performance as designed can be stably secured, and the heat insulation performance can be further stabilized.

Further, in the refrigerator according to an example of the embodiment of the present invention, the spacer member may be formed of expanded polystyrene.

With such a configuration, the spacer member can be easily manufactured into a shape along the shape of the concavo-convex portion by molding, even if the shape of the concavo-convex portion formed in the inner box or outer box of the main body is complicated. Can do. In addition, since the spacer member itself also has a heat insulating property, higher heat insulating properties can be stably exhibited in combination with the heat insulating effects of the vacuum heat insulating material and the foam heat insulating material. Thereby, energy saving and the effect of expanding the internal volume can be realized at a higher level while reducing the cost.

In the refrigerator according to the example of the embodiment of the present invention, the vacuum heat insulating material has an area larger than the projected area of the heat generating component installed in the component storage chamber on the wall surface of the storage chamber adjacent to the component storage chamber. It may be configured.

With such a configuration, radiant heat from a heat generating component such as a compressor installed in the component storage chamber of the main body can be more reliably insulated by the vacuum heat insulating material, and the heat insulation as the whole main body is improved to improve energy saving. be able to. Moreover, since the vacuum heat insulating material is provided between the component storage chamber and the storage chamber, the wall thickness between the component storage chamber and the storage chamber can be made thinner than before, and the internal volume in the main body can be reduced. Can be expanded.

In addition, the refrigerator according to an example of the embodiment of the present invention has a heat generating component from a portion where the vacuum heat insulating material has substantially the same area as the projected area of the heat generating component on the wall surface of the storage chamber adjacent to the component storage chamber. A part other than the part having substantially the same area as the projected area on the wall surface of the storage room adjacent to the parts storage room may be configured to have a larger area.

With such a configuration, the heat of the part having the same area as the heat generating component projection area of the vacuum heat insulating material that receives a radiant heat from the heat generating component and having a high temperature has the same area as the heat generating component projection area of the vacuum heat insulating material. Since conductive diffusion is performed in portions other than the portion, the vacuum heat insulating material can be lowered in temperature, the heat insulating effect of the vacuum heat insulating material can be enhanced, and the energy saving property can be further improved.

In the refrigerator according to an example of the embodiment of the present invention, the component storage chamber includes a cooling fan that cools the heat generating component, and the vacuum heat insulating material covers at least a portion through which air flows after cooling the heat generating component. You may be comprised so that it may have.

With such a configuration, the vacuum heat insulating material not only radiates heat from the heat-generating component, but also relatively high-temperature air existing in the component storage chamber, that is, heat of the relatively high-temperature air after cooling the heat-generating component. Can also be insulated, and energy saving can be further enhanced.

Further, in the refrigerator according to an example of the embodiment of the present invention, the vacuum heat insulating material may be configured to have a width substantially the same as the width of the component storage chamber.

With such a configuration, it is possible to insulate the radiant heat from the heat generating components in the component storage chamber including the compressor and the like, and the vacuum heat insulating material provided almost full width of the component storage chamber further enhances the heat insulating performance, It is possible to improve the strength of the component storage chamber, and hence the strength of the main body. Further, it is possible to prevent the main body from being deformed at the time of transporting the main body before filling with the foam heat insulating material, and the quality can be improved.

Further, in the refrigerator according to the example of the embodiment of the present invention, the concavo-convex portion may have a component attaching portion to which the heat generating component is attached.

With such a configuration, the vacuum heat insulating material disposed between the component storage chamber and the storage chamber is prevented from being broken by the uneven portion present on the wall surface of the component storage chamber, and the portion where the uneven portion exists Even so, since the vacuum heat insulating material can be installed without impairing the reliability, the heat insulating property can be improved. In addition, the wall thickness of the main body can be made thinner than before, and the internal volume of the main body can be expanded.

Further, in the refrigerator according to an example of the embodiment of the present invention, the component storage chamber further includes a component storage chamber case, and the component storage chamber case is provided with an uneven portion, and the component storage chamber is provided above the outer box. It may be arranged in the main body by mounting the component storage case to the notch provided. In the refrigerator according to an example of the embodiment of the present invention, the spacer member and the vacuum heat insulating material may be attached to the component storage case and integrated with the component storage case to form a unit.

With such a configuration, the spacer member and the vacuum heat insulating material can also be installed simply by attaching the component storage case to the outer box. That is, the spacer member and the vacuum heat insulating material can be quickly and easily compared with the case where the component storage chamber case is attached to the outer box alone and then the spacer member and the vacuum heat insulating material are individually attached to the component storage case. Can be installed to improve productivity and lower production costs.

FIG. 1 is a perspective view of the refrigerator according to the embodiment of the present invention. FIG. 2 is a cross-sectional view of the refrigerator according to the embodiment of the present invention. FIG. 3 is a rear perspective view of the refrigerator according to the embodiment of the present invention. FIG. 4 is an exploded perspective view showing a portion where the component storage chamber of the refrigerator according to the embodiment of the present invention is provided. FIG. 5 is a rear exploded perspective view showing the inner box and the component storage case of the refrigerator according to the embodiment of the present invention. FIG. 6 is a front view of a portion where the component storage chamber of the refrigerator according to the embodiment of the present invention is provided as viewed from the back. FIG. 7 is an enlarged perspective view showing a part where the component storage chamber of the refrigerator according to the embodiment of the present invention is provided. FIG. 8 is a perspective view of a portion of the refrigerator compartment according to the embodiment of the present invention cut along line 10-10 in FIG. FIG. 9 is a perspective view of a part of the refrigerator compartment according to the embodiment of the present invention cut along line 11-11 in FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 11 is a cross-sectional view taken along line 11-11 of FIG. FIG. 12 is a perspective view showing the component storage chamber case unit of the refrigerator according to the embodiment of the present invention. FIG. 13 is an exploded perspective view showing the component storage chamber case unit of the refrigerator according to the embodiment of the present invention. FIG. 14A is an exploded perspective view of the refrigerator component storage case unit of the embodiment of the present invention. FIG. 14B is an exploded perspective view of the component storage case unit according to the embodiment of the present invention as viewed from the side opposite to FIG. 14A. FIG. 15 is a cross-sectional view of the spacer member and the vacuum heat insulating material of the refrigerator according to the embodiment of the present invention. FIG. 16 is a front view showing the positional relationship of the vacuum heat insulating material installed in the component storage chamber of the refrigerator according to the embodiment of the present invention. FIG. 17 is an enlarged cross-sectional view showing an air vent configuration in a component storage chamber portion of the refrigerator according to the embodiment of the present invention. FIG. 18 is a schematic view for explaining the filler flow (air vent flow) of the foam heat insulating material in the component storage chamber portion of the refrigerator according to the embodiment of the present invention. FIG. 19 is an enlarged cross-sectional view showing the filler heat-insulating material flow (air venting flow) from the refrigerator compartment surface side in the component storage chamber portion of the refrigerator according to the embodiment of the present invention. FIG. 20A is a cross-sectional view of a conventional refrigerator. FIG. 20B is a front sectional view of a conventional refrigerator.

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 is a perspective view of a refrigerator according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the refrigerator according to the embodiment of the present invention, and FIG. 3 is a rear perspective view of the refrigerator according to the embodiment of the present invention. It is. FIG. 4 is an exploded perspective view showing a part where the parts storage chamber of the refrigerator according to the embodiment of the present invention is provided, and FIG. 5 is an inner case and parts storage of the refrigerator according to the embodiment of the present invention. It is a back surface disassembled perspective view which shows a chamber case.

1 to 5, the main body 1 of the refrigerator 200 has an outer box 2 mainly made of steel as shown in FIG. 2, and an inner box 3 formed of a hard resin such as ABS. Between the outer box 2 and the inner box 3, a foam heat insulating material 4 such as hard foam urethane is filled. The vacuum heat insulating material 5 is disposed between the outer box 2 and the inner box 3 of the main body 1, more specifically, on the side surface, the back surface, and the top surface between the outer box 2 and the inner box 3. .

A plurality of storage chambers such as a refrigerator compartment 6, a freezer compartment 7, and a vegetable compartment 8 are provided inside the main body 1, and a door 9 that can be opened and closed is provided at the opening of each of the plurality of storage compartments. Yes. Further, a duct for supplying cold air to the refrigerator compartment 6, the freezer compartment 7, the vegetable compartment 8, and the like is provided in the main body 1. As shown in FIG. 2, the duct member 6a for supplying cold air to the refrigerator compartment 6 is provided along the inner surface of the back part of the inner box 3, and the upper part thereof is fixed to the inner box 3 by a retaining screw 6b (see FIG. 5). Has been. The retaining screw 6b protrudes from a portion facing a vertical wall of a component storage chamber, which will be described later, and constitutes an uneven portion on the inner box 3 side.

Further, as shown in FIG. 4, an uneven portion 18 is formed on the wall of the main body 1. Further, a notch 2a is provided at the upper rear of the outer box 2 constituting the main body 1, and a substantially L-shaped component storage chamber case 110 is fitted into the notch 2a and attached thereto. The component storage chamber 111 is formed in a concave shape. In addition, substantially L-shaped means the shape along the vertical wall surface and bottom face of the notch 2a cut out in the vertical direction and the horizontal direction of the outer box 2, as shown in FIG. A cross section viewed from the side is a shape like an L-shape. The parts storage chamber case 110 may be arranged to constitute a part of the outer box 2. The upper part and the rear part of the component storage chamber 111 are covered with a component storage chamber cover 111a. The component storage chamber cover 111a is provided with an intake hole 12 and an exhaust hole 13.

FIG. 6 is a front view of the part where the parts storage chamber of the refrigerator according to the embodiment of the present invention is provided as viewed from the back side, and FIG. 7 is provided with the parts storage chamber of the refrigerator according to the embodiment of the present invention. It is an expansion perspective view which shows the part performed. FIG. 8 is a perspective view of the part storage room of the refrigerator according to the embodiment of the present invention, taken along line 10-10 in FIG. 7, and FIG. 9 is a perspective view of the refrigerator according to the embodiment of the present invention. It is the perspective view cut | disconnected by the 11-11 line | wire of FIG. 7 of a components storage chamber. 10 is a cross-sectional view taken along line 10-10 in FIG. 7, and FIG. 11 is a cross-sectional view taken along line 11-11 in FIG. FIG. 12 is a perspective view showing the component storage chamber case unit of the refrigerator according to the embodiment of the present invention, and FIG. 13 is an exploded perspective view showing the component storage chamber case unit of the refrigerator according to the embodiment of the present invention. . 14A is an exploded perspective view of the component storage chamber case unit of the refrigerator according to the embodiment of the present invention, and FIG. 14B is the opposite side of FIG. 14A of the component storage chamber case unit of the embodiment of the present invention. It is the disassembled perspective view seen from the surface. FIG. 15 is a cross-sectional view of the spacer member and the vacuum heat insulating material of the refrigerator according to the embodiment of the present invention, and FIG. 16 shows the vacuum heat insulating material installed in the component storage chamber of the refrigerator according to the embodiment of the present invention. It is a front view which shows a positional relationship. FIG. 17 is an enlarged cross-sectional view showing an air vent configuration in a portion where the component storage chamber of the refrigerator according to the embodiment of the present invention is provided, and FIG. 18 is a component storage chamber of the refrigerator according to the embodiment of the present invention. It is the schematic for demonstrating the flow (air bleeding flow) of the foaming heat insulating material filling in the part provided with. FIG. 19 is an enlarged cross-sectional view showing the flow of filling of the foam heat insulating material (air venting flow) from the storage chamber surface side in the portion where the component storage chamber of the refrigerator according to the embodiment of the present invention is provided.

In the parts storage chamber 111, a condenser 15, a cooling fan 16, and a compressor 17, which are parts constituting the refrigeration cycle, are installed in this order from the windward (intake hole 12) side. The condenser 15 and the compressor 17 are air-cooled.

The component storage chamber case 110 constituting the component storage chamber 111 has a plurality of irregularities on at least two wall surfaces, for example, the vertical and horizontal wall surfaces of the component storage chamber case 110, as shown in FIGS. An uneven portion 18 is formed, and the condenser 15, the cooling fan 16, the compressor 17 and the like are attached and fixed using the uneven portion 18. Specifically, for example, as shown in FIG. 7, a part of the concavo-convex portion 18 existing on the bottom surface of the component storage chamber 111 is configured as a component mounting portion 19, and the compressor 17 is attached to the component mounting portion 19 with rubber. It is fixed with screws through the bush 20.

Between at least two walls (vertical wall and horizontal wall) of the component storage case 110 and the vertical wall and horizontal wall of the inner box 3 opposed thereto, as shown in FIGS. 10 and 11, a spacer member 21 is interposed. A vacuum heat insulating material 55 is installed, and the heat insulating structure filled with the foam heat insulating material 44 is provided.

The spacer member 21 is formed by molding polystyrene foam. As shown in FIGS. 14A and 14B, the surface 22 a of the spacer member 21 on the side in contact with the concavo-convex portion 18 of the component storage chamber case 110 is formed of the concavo-convex portion 18. It has a shape that conforms to the shape, and is fitted and attached to the wall surface on the back side of the wall surface of the component storage chamber case 110 in which the uneven portion 18 is formed.

The spacer member 21 is configured such that the surface 22b on the opposite side to the surface 22a on the side in contact with the concavo-convex portion 18 of the component storage chamber case 110 has a substantially planar shape. Further, on the outer peripheral portion of the surface 22 b, the convex portion 23 is formed continuously or discontinuously (that is, divided into several portions) along the outer periphery of the spacer member 21, and is surrounded by the convex portion 23. The vacuum heat insulating material 55 is installed in the plane part of the surface 22b. At this time, the height of the convex portion 23 (the height of the portion of the spacer member 21 that protrudes outward with reference to the surface of the planar portion surrounded by the convex portion 23) is determined by the vacuum heat insulating material 55 on the spacer member 21. When installed, the outer surface of the vacuum heat insulating material 55 and the surface of the protruding portion of the convex portion 23 are set to form substantially the same surface. For example, in the present embodiment, as shown in FIG. 15, the convex portion 23 has a height substantially equal to the thickness (height) of the flat portion of the vacuum heat insulating material 55. It is comprised so that it may have. Thereby, the outer surface of the vacuum heat insulating material 55 and the surface of the protrusion part of the convex part 23 form substantially the same surface.

As shown in FIGS. 12 and 13, the vacuum heat insulating material 55 installed on the surface 22 b of the spacer member 21 is formed by bending a single vacuum heat insulating material into a substantially L shape. The unit is integrated and unitized so as to be a single unit component by being affixed to the component storage chamber case 110 with the tape 24 so as to sandwich the component storage chamber case 110.

Further, as shown in FIG. 6, the vacuum heat insulating material 55 is formed so that the lateral width thereof is substantially the same as the lateral width of the component storage chamber 111. Further, the vacuum heat insulating material 55 may be formed so that the vertical width thereof is substantially the same as the vertical width of the component storage chamber 111. The vacuum heat insulating material 55 is configured to have an area larger than the projected area of the heat generating components such as the compressor 17 and the condenser 15 installed in the component storage chamber 111 on the wall surface of the storage chamber adjacent to the component storage chamber 111. ing.

Further, as shown in FIGS. 7, 14A, and 14B, the spacer member 21 is attached to the component of the compressor 17 between the wall surface on the back side of the wall surface on which the uneven portion 18 of the component storage case 110 is formed. A foam heat insulating material passage 25 connected to the portion 19 is formed. In the present embodiment, as indicated by an arrow X in FIGS. 8 and 13, the foam heat insulating material 44 flows into the foam heat insulating material passage 25 from between the front end piece of the component storage chamber case 110 and the front end surface of the spacer member 21. It is configured as follows. The foam heat insulating material 44 flows into the component mounting portion 19 through the foam heat insulating material passage 25, and is foamed and solidified between the back surface of the component mounting portion 19 and the surface 22a of the spacer member 21, as shown in FIG. It is installed.

Furthermore, as shown in FIG. 5, a plurality of air vent holes 26 are provided in the portion of the inner box 3 of the main body 1 facing the vacuum heat insulating material 55 facing the vacuum heat insulating material 55. The air vent hole 26 is formed substantially at the center of the projected area of the vacuum heat insulating material 55 on the wall of the inner box 3, and as shown in FIG. 5, in a ring shape, for example, in this embodiment, a square shape. They are arranged in a frame shape. In addition, an auxiliary heat insulating material 27 made of foamed polystyrene or the like is disposed in a portion surrounded by the annular air vent hole 26.

Further, a plurality of other air vent holes 26a are provided in a portion of the inner box 3 covered with the duct member 6a.

The operation of the refrigerator 200 of the present embodiment configured as described above will be described below.

In the refrigerator 200 of the present embodiment, a compressor 17 and a condenser 15 that are heat generating components are provided in a component storage chamber 111 at the upper rear of the main body 1, and these generate heat, and the heat is stored in the component storage chamber. An attempt is made to enter a storage room in the main body 1, for example, the refrigerating room 6 through the vertical and horizontal walls 111.

However, in the refrigerator 200 of the present embodiment, since the vacuum heat insulating material 55 is provided on the vertical and horizontal walls between the component storage chamber 111 and the refrigerator compartment 6, in addition to the heat insulation by the foam heat insulating material 44, the vacuum heat insulating material. The heat insulation action by 55 works, and the heat from the compressor 17 and the condenser 15 can be insulated more reliably.

With such a configuration, the temperature rise in the refrigerator compartment 6 due to heat intrusion from the component storage chamber 111 can be significantly reduced as compared with the conventional heat insulation using only the foam heat insulating material. That is, the frequency of cooling can be suppressed and energy saving can be improved.

Moreover, since the vacuum heat insulating material 55 is provided between the component storage chamber 111 and the refrigerator compartment 6, the heat insulating property of the component storage chamber 111 can be dramatically improved. Thereby, the wall thickness between the vertical wall and horizontal wall of the component storage chamber 111 and the vertical wall and horizontal wall of the inner box 3 can be made thin. Therefore, the internal volume of the refrigerator compartment 6 can be increased without increasing the outer shape of the main body 1 because the wall thickness can be reduced.

Moreover, in the refrigerator 200 of this Embodiment, the spacer member 21 is arrange | positioned at the back surface of the wall surface in which the uneven | corrugated | grooved part 18 of the components storage chamber 111 is formed, and the spacer member 21 follows the uneven | corrugated shape of the uneven | corrugated | grooved part 18. The surface 22b opposite to the surface 22a having a shape is configured to have a substantially planar shape. Further, the vacuum heat insulating material 55 is disposed on the substantially planar surface 22 b of the spacer member 21. With such a configuration, it is possible to prevent the outer bag of the vacuum heat insulating material 55 from being broken by the uneven portion 18 present on the wall surface of the component storage chamber 111.

Therefore, even in the portion where the uneven portion 18 exists, the original high heat insulation property of the vacuum heat insulating material 55 can be continuously exhibited, and the reliability for heat insulation can be ensured.

Moreover, since the air vent hole 26 is provided in the portion of the inner box 3 of the main body 1 facing the vacuum heat insulating material 55, the foam heat insulating material 44 hardly flows due to the newly provided vacuum heat insulating material 55 and the spacer member 21. It is possible to suppress occurrence of voids and the like, stabilize heat insulation performance, and improve reliability.

The filling of the foam insulation material 44 is usually performed by filling the refrigerator 200 on the back side of the main body 1 with the opening of the main body 1 facing down and the back side of the main body 1 facing upward. The foamed heat insulating material 44 is filled from 28, and the substituted air is discharged from an air vent hole 26 a provided on the back surface of the inner box 3.

Therefore, the foam heat insulating material 44 filled between the outer box 2 and the inner box 3 constituting the main body 1 is usually positioned on both sides of the back surface of the inner box 3 as shown in FIGS. 17 and 18. After flowing as a liquid from the filling port 28 of the outer box 2 to the opening edge side of the inner box 3, it passes between the inner box 3 and the outer box 2 while being reversed and foamed, and the inner side of the rear side of the inner box 3 It flows toward.

At that time, as shown in FIG. 11 and the like, a space 29 between the vertical and horizontal walls of the component storage chamber case 110 and the inner box 3 disposed between the component storage chamber 111 and the refrigeration chamber 6 (hereinafter referred to as the following) The foam heat insulating material filling space 29 is narrowed by the thickness dimension of the newly laid vacuum heat insulating material 55. For this reason, the flow of the foam heat insulating material 44 flowing through this portion is deteriorated, voids are generated, and the heat insulating performance of the foam heat insulating material 44 itself varies, that is, it is difficult to obtain a stable heat insulating performance and the reliability is lowered.

In order to solve such a problem, the size of the foam heat insulating material filling space 29 formed between the wall surface of the inner box 3 and the vertical and horizontal walls of the component storage case 110 is set to the vacuum heat insulating material 55 and the spacer. It can be considered that the main body 1 is configured so as to have the same dimensions as before the member 21 is newly installed. However, with such a configuration, the wall thickness is increased by the thickness dimension of the vacuum heat insulating material 55 and the spacer member 21 in spite of the fact that the folding vacuum heat insulating material 55 is provided, and the content of the main body 1 is increased. The result is that the product is reduced.

In this respect, according to the configuration exemplified in the present embodiment, since the air vent hole 26 is provided in the portion facing the vacuum heat insulating material 55, the foam heat insulating material filling is performed even if the foam heat insulating material filling space 29 is narrowed. Since the air in the space 29 flows smoothly toward the air vent hole 26, the foamed heat insulating material 44 can proceed smoothly while foaming, and voids can be prevented from being generated.

Therefore, variation in the heat insulating performance of the foam heat insulating material 44 itself can be suppressed, and the heat insulating performance of the portion where the uneven portion 18 exists can be stabilized. In addition, since the wall thickness can be reduced by maintaining the foam heat insulating material filling space 29 narrow, the effect of expanding the internal volume of the storage chamber can be obtained.

Further, in the present embodiment, the air vent hole 26 is configured to be positioned substantially at the center portion of the portion of the inner box 3 that faces the vacuum heat insulating material 55, and therefore from the outer peripheral portion of the vacuum heat insulating material 55. Air escapes toward the central portion, and foaming of the foam heat insulating material 44 proceeds. Therefore, void generation can be prevented over the entire area of the foam heat insulating material filling space 29 facing the vacuum heat insulating material 55, heat insulating performance can be stabilized, and energy saving can be improved.

Furthermore, since the air vent holes 26 are annularly formed and the auxiliary heat insulating material 27 is disposed in a portion surrounded by the air vent holes 26, a void should be generated near the center of the air vent hole 26. Even if there is, the portion where the void is generated can be insulated by the auxiliary heat insulating material 27. Therefore, the influence of the heat insulation property fall by a void can be excluded by the heat insulation by the auxiliary heat insulating material 27, and the stable heat insulation performance can be realized and the energy saving property can be improved more reliably.

Further, in the present embodiment, the component storage chamber 111 is provided with a component storage chamber case 110 mounted in a notch 2 a provided at the upper rear of the outer box 2. In addition, the spacer member 21 and the vacuum heat insulating material 55 are attached to the component storage case 110 so that they are integrated and unitized. With such a configuration, productivity can be increased and production cost can be reduced.

That is, in the present embodiment, the component storage chamber case 110, the spacer member 21, and the vacuum heat insulating material 55 are unitized, so that the spacer member can be obtained simply by attaching the component storage chamber case 110 to the notch 2a of the outer box 2. 21 and the vacuum heat insulating material 55 can be installed. Moreover, after the component storage chamber case 110 is attached to the outer box 2, these can be quickly and easily attached to the outer box 2 as compared with the case where the spacer member 21 and the vacuum heat insulating material 55 are respectively attached to the component storage chamber case 110. Can be installed. Therefore, productivity can be improved and production cost can be reduced.

In addition, since the vacuum heat insulating material 55 is adhered and fixed to the spacer member 21 with the tape 24 or the like, the foam heat insulating material filling space 29 is not narrowed by the spring back, and the fluidity of the foam heat insulating material 44 is improved. It can stabilize and improve the void generation | occurrence | production suppression effect, and heat insulation performance can be stabilized more reliably.

In the present embodiment, since the spacer member 21 is made of styrene foam, even if the shape of the concavo-convex portion 18 is complicated, the spacer member 21 is shaped to conform to the shape of the concavo-convex portion 18 by molding. It can be manufactured easily and the cost can be reduced.

Moreover, since the spacer member 21 itself also has a heat insulating property, the heat insulating effect of the vacuum heat insulating material 55 and the foam heat insulating material 44 can be combined to exhibit a higher heat insulating property.

Therefore, it is possible to realize energy saving and expansion of the internal volume while reducing the cost.

The spacer member 21 is provided with a convex portion 23 on the outer peripheral portion of the surface 22b on which the vacuum heat insulating material 55 is installed, and the vacuum heat insulating material 55 is installed on the surface 22b surrounded by the convex portion 23. For this reason, it is possible to prevent the vacuum heat insulating material 55 installed in the spacer member 21 from being displaced due to the flow and foaming of the foam heat insulating material 44 filled between the outer box 2 and the inner box 3.

Therefore, the air vent hole 26 provided in the portion facing the vacuum heat insulating material 55 is securely held in the substantially central portion of the foam heat insulating material filling space 29 narrowed by the vacuum heat insulating material 55, and void generation is efficiently performed. It can suppress, and heat insulation performance can be stabilized more reliably. In addition, damage bag breakage caused by the displacement movement of the vacuum heat insulating material 55 can be reliably prevented, further stabilizing the heat insulating performance and improving the reliability.

In the present embodiment, the convex portion 23 is formed on the outer peripheral portion of the spacer member 21, and preferably is formed along the outer periphery of the spacer member 21. Further, when the vacuum heat insulating material 55 is installed on the spacer member 21, the convex portion 23 is formed so that the surface of the protruding portion of the convex portion 23 and the outer surface of the vacuum heat insulating material 55 form substantially the same surface. The height of the convex portion 23 is set. For example, in the present embodiment, the convex portion 23 has a protruding portion (a portion protruding outward from the surface of the planar portion of the spacer member 21) having a height (height) of the flat portion of the vacuum heat insulating material 55. ) And substantially the same height. With such a configuration, the foam heat insulating material 44 can smoothly flow between the inner box 3 and the vacuum heat insulating material 55 when the foam heat insulating material 44 is filled with foam. Accordingly, when there is a step or the like between the surface of the vacuum heat insulating material 55 and the surface of the convex portion 23, or when the convex portion 23 is divided into a plurality along the outer periphery, etc. It is possible to suppress the generation of voids that tend to occur due to a decrease in the fluidity of the material, to stably realize high heat insulation performance as designed, and to further stabilize the heat insulation performance.

The vacuum heat insulating material 55 is formed by being bent substantially in an L shape so as to extend along at least two surfaces of the vertical wall and the horizontal wall of the component storage chamber 111 and is attached to the spacer member 21. Yes. Thereby, productivity can be improved and production cost can be suppressed as compared with the case where individual vacuum heat insulating materials are installed on at least two surfaces of the vertical wall and the horizontal wall of the component storage chamber 111, respectively. Can do.

On the other hand, the compressor 17 installed in the component storage chamber 111 emits heat and at the same time generates vibration. However, in the present embodiment, the foam heat insulating material 44 is filled and solidified on the wall surface on the back side of the wall surface on which the component mounting portion 19 for mounting the heat generating component such as the compressor 17 is provided. Therefore, the strength of the component mounting portion 19 can be increased by the foam heat insulating material 44, and the compressor 17 can be securely and firmly fixed without wobbling.

That is, when the vacuum heat insulating material 55 is disposed on the uneven portion 18 where the component mounting portion 19 is formed via the spacer member 21 and the foamed heat insulating material 44 is filled and solidified as it is, the component mounting portion 19 is not a spacer. It becomes a shape that is supported by the member 21, and anxiety arises in its strength. However, according to the configuration of the present embodiment, since the foam heat insulating material 44 is poured between the component mounting portion 19 and the spacer member 21 and foamed and solidified, and supported by the foam heat insulating material 44, Sufficient strength can be ensured.

Therefore, the compressor 17 that is heavy and vibrates can be securely and firmly attached and fixed to the component attaching portion 19. At the same time, it is possible to suppress generation of noise due to vibrations transmitted to the main body 1. That is, it is possible to eliminate the strength reduction caused by the installation of the spacer member 21 and to improve the reliability by improving the component mounting strength while improving the heat insulation.

Furthermore, the vacuum heat insulating material 55 is formed to be almost full in the width of the component storage chamber 111, and is larger than the size of the compressor 17 and the condenser 15 which are heat generating components. Further, the vacuum heat insulating material 55 is selectively formed so that the vertical width of the component storage chamber 111 is almost full, and is larger than the size of the compressor 17 and the condenser 15 which are heat generating components. More specifically, the vacuum heat insulating material 55 is a portion (heat generating component) where the heat generating component has the same area as the area (heat generating component projected area) projected on the wall surface of the storage chamber adjacent to the component storage chamber 111 of the main body 1. A portion other than the heat generation component projection area portion has a larger area than the projection area portion). With such a configuration, the heat insulation effect can be enhanced.

That is, the vacuum heat insulating material 55 insulates radiant heat from all the heat generating components in the component storage chamber 111 including the compressor 17 and the condenser 15. Moreover, the vacuum heat insulating material 55 exhibits the heat insulation effect effectively and insulates, without being influenced by the radiant heat from heat-emitting components, such as the compressor 17. On the other hand, when the size of the vacuum heat insulating material 55 is the same as or smaller than the projected area of the heat generating component, the radiant heat received from the heat generating component such as the compressor 17 is accumulated in the aluminum foil constituting the outer cover material and is not dissipated. As a result, the temperature rises and the heat insulating effect is reduced. However, in the case of the refrigerator 200 of the present embodiment, the vacuum heat insulating material 55 is configured such that the portion other than the heat generating component projection area is larger than the heat generating component projection area, and thus the heat generating component projection area. The radiant heat accumulated in the portion can be dissipated in the portion other than the heat generating component projection area portion, and the surface temperature of the vacuum heat insulating material 55 can be lowered. Therefore, the surface temperature of the vacuum heat insulating material 55 is not increased and the heat insulating effect is not reduced, and a higher heat insulating effect can be obtained, and the energy saving property can be further improved.

Further, the vacuum heat insulating material 55 is formed to be almost full in the width of the component storage chamber 111. Moreover, the vacuum heat insulating material 55 is selectively formed so that the vertical width of the component storage chamber 111 is almost full. With such a configuration, not only radiant heat from the heat generating components such as the compressor 17 but also relatively high temperature air existing in the component storage chamber 111, that is, the compressor 17 and the condenser 15 indicated by the arrows in FIG. The heat of the air having a relatively high temperature after cooling the heat generating component can be insulated, and energy saving can be further improved.

In addition, the vacuum heat insulating material 55 formed to be approximately the same width as the width of the component storage chamber 111 also functions as a reinforcing material for the component storage chamber 111, thereby improving the strength of the component storage chamber 111 and consequently the strength of the main body 1. Can be made. Similarly, when the vacuum heat insulating material 55 is formed to be approximately the same size as the vertical width of the component storage chamber 111, the vacuum heat insulating material 55 also functions as a reinforcing material for the component storage chamber 111. The strength, and thus the strength of the main body 1 can be improved. Furthermore, the vacuum heat insulating material 55 can prevent the deformation of the main body 1 during the conveyance of the main body 1 before filling the foam heat insulating material as well as the strength of the main body 1 after filling the foam heat insulating material, thereby improving the quality. You can also.

As mentioned above, although this invention has been demonstrated using embodiment, it cannot be overemphasized that this invention is not limited to this and can be variously changed within the range which achieves the objective of this invention.

For example, in the above-described embodiment, the component storage chamber 111 provided at the upper part of the main body 1 as an example where the uneven portion is present has been described, but storage of control units and the like provided on the back surface and the top surface of the main body 1 is described. It may be a chamber (portion indicated by Y in FIG. 2), and is a portion that requires heat insulation, such as a storage chamber for components such as the compressor 17, the condenser 15, and the control unit, and is an uneven portion for mounting components. The present invention can be applied anywhere as long as the portion is provided.

Moreover, although the strength countermeasure structure of the component attachment part 19 demonstrated in the said embodiment demonstrated as an example the component attachment part to which the compressor 17 is attached, components, such as the condenser 15 or the cooling fan 16, may be sufficient. It is particularly effective if it is heavy and vibrates.

Further, the spacer member 21 has been described by exemplifying the spacer member 21 provided on the outer box 2 side of the main body 1, that is, on the component storage chamber case 110 side which is a part of the outer box 2. The retaining screw 6b may be provided on the inner box 3 side that protrudes and has an uneven shape. Similarly, the air vent hole 26 may be provided on the outer box 2 side.

As described above, the above-described embodiment should be considered as illustrative in all points and not restrictive. That is, the scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

As described above, the present invention can improve the heat insulating property of the portion where the concavo-convex portion of the main body exists without reducing the reliability or inducing variation in the heat insulating performance. It is possible to provide a refrigerator that can be thinned, has high energy savings, and has a large internal volume. Therefore, it can be widely used for other freezing and refrigeration applied products such as household refrigerators, commercial refrigerators and vending machines.

DESCRIPTION OF SYMBOLS 1 Main body 2 Outer box 2a Notch 3

Inner box

4,44 Foam

heat insulating material

5,55 Vacuum heat insulating material 6 Refrigeration room

6a Duct member

6b Stop screw 7 Freezing room 8 Vegetable room 9 Door 110 Parts storage room case 111 Parts storage room 12 Intake hole 13 Exhaust hole 15 Condenser 16 Cooling fan 17 Compressor (heat-generating component)
DESCRIPTION OF SYMBOLS 18 Concavity and convexity part 19 Part mounting part 20 Rubber bush 21

Spacer member

22a, 22b Surface 23 Convex part 24 Tape 25

Foam insulation passage

26, 26a Air vent hole 27 Auxiliary insulation material 28 Filling port 29 Foam insulation material filling space

Claims

A main body having an inner box and an outer box, a foam heat insulating material disposed between the inner box and the outer box, a storage chamber and a component storage chamber provided in the main body, and stored in the component storage chamber A heat insulating component, and a vacuum heat insulating material provided between the component storage chamber and the storage chamber, the component storage chamber has a concavo-convex portion for attaching the heat generating component to a wall surface, A spacer member is disposed on a wall surface on the back side of the wall surface provided with the uneven portion, and the spacer member includes a surface having a shape along the uneven shape of the uneven portion, and the uneven portion of the uneven portion. The surface opposite to the surface having a shape along the shape has a substantially planar shape, and the vacuum heat insulating material is installed on the surface having the substantially planar shape, and the inner box or the outer box The air vent is formed in the portion facing the vacuum heat insulating material. Provided refrigerator.
2. The refrigerator according to claim 1, wherein the air vent hole is provided so as to be positioned substantially at a central portion of the portion facing the vacuum heat insulating material of the inner box or the outer box of the main body.
The refrigerator according to claim 1 or 2, wherein the air vent holes are arranged in an annular shape, and an auxiliary heat insulating material is disposed in a portion surrounded by the air vent holes arranged in the annular shape.
The refrigerator according to any one of claims 1 to 3, wherein the component storage chamber is provided on an upper rear side of the main body.
The component storage chamber is disposed to face the storage chamber on at least two surfaces of a vertical surface and a horizontal surface, and the vacuum heat insulating material is along the at least two surfaces of the component storage chamber. The refrigerator according to claim 4, wherein the refrigerator is substantially bent in an L shape and is attached and fixed to the spacer member.
6. The spacer member according to claim 1, wherein a convex portion is provided on an outer peripheral portion of the substantially planar surface, and the position of the vacuum heat insulating material is regulated by the convex portion. The refrigerator according to the item.
The convex portion is formed on the outer peripheral portion of the spacer member, and the outer surface of the vacuum heat insulating material when installed on the spacer member and the surface of the convex portion are substantially the same surface. The refrigerator according to claim 6, wherein the height of the convex portion is set so as to form the shape.
The refrigerator according to any one of claims 1 to 7, wherein the spacer member is made of foamed polystyrene.
The vacuum heat insulating material is configured to have an area larger than a projected area of the heat generating component installed in the component storage chamber onto a wall surface of the storage chamber adjacent to the component storage chamber. The refrigerator of any one of Claims.
The refrigerator according to claim 9, wherein the vacuum heat insulating material is configured such that a portion other than a portion having the same area as the projected area has a larger area than a portion having the same area as the projected area.
The component storage chamber includes a cooling fan for cooling the heat generating component, and the vacuum heat insulating material is configured to cover at least a portion through which air flows after cooling the heat generating component. The refrigerator according to any one of 10 above.
The refrigerator according to any one of claims 1 to 11, wherein the vacuum heat insulating material has a width that is substantially the same as a width of the component storage chamber.
The refrigerator according to any one of claims 1 to 12, wherein the uneven portion includes a component mounting portion to which the heat generating component is mounted.
The component storage chamber further includes a component storage chamber case, and the concave and convex portion is provided in the component storage chamber case, and the component storage chamber is provided in the notch provided in the upper portion of the outer box. The storage chamber case is mounted on the main body, and the spacer member and the vacuum heat insulating material are mounted on the component storage chamber case and integrated with the component storage chamber case as a unit. 14. The refrigerator according to any one of items 13 to 13.