JP2023073878A - refrigerator - Google Patents

Abstract

To provide a refrigerator having a structure which inhibits deformation of an outer box and improves heat insulation performance by a plate-like insulator.SOLUTION: A refrigerator 10 includes: a heat insulation box body 11 in which a storage room is formed; and a refrigerant pipe 38. The heat insulation box body 11 has: an outer box 15 forming an outer surface of the heat insulation box body 11; an inner box 16 disposed within the outer box 15; and an insulator 17 disposed between the outer box 15 and the inner box 16. The insulator 17 has: a filled insulator 23 disposed near an outer surface of the inner box 16; and a filled insulator 23 which is foamed to fill a space between the outer box 15 and the inner box 16. The refrigerant pipe 38 is disposed between the outer box 15 and the filled insulator 23. The outer box 15 partially protrudes to the outer side in a width direction to form a groove part 30. The refrigerant pipe 38 is housed in the groove part 30.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a refrigerator, and more particularly to a refrigerator provided with a plate-shaped heat insulating material as a heat insulating material.

In a general refrigerator, a storage compartment is formed inside an insulating box body, and a front opening of the storage compartment is closed by an insulating door so as to be openable and closable. The heat insulating box consists of an outer box made of steel plate, an inner box made of synthetic resin plate placed inside the outer box, and a heat insulating material filled between the outer box and the inner box.

Urethane foam is generally used as a heat insulating material with which the heat insulating box of a refrigerator is filled. However, in order to cope with further energy saving of the refrigerator, a heat insulating material having a higher heat insulating property than urethane foam is preferable.

Therefore, in some cases, a plate-shaped heat insulating material such as a vacuum heat insulating material is employed as the heat insulating material incorporated in the heat insulating box. A vacuum heat insulating material is a fibrous inorganic material such as glass wool vacuum-packaged, and has a heat insulating effect ten and several times greater than that of urethane foam. With such a configuration, the vacuum insulation material can well insulate the storage compartment from the outside, and the energy required for the cooling operation of the refrigerator can be reduced. Such a refrigerator is described, for example, in US Pat.

Referring to FIG. 9, the configuration of refrigerator 100 employing a vacuum heat insulating material will be described. FIG. 9 is a horizontal sectional view showing refrigerator 100. As shown in FIG.

Refrigerator 100 has outer box 101 and inner box 102 , and storage compartment 107 is formed inside inner box 102 . Between the outer box 101 and the inner box 102, a foamed heat insulating material 103 and a plate-shaped heat insulating material 104 are arranged as heat insulating materials. A plate-shaped heat insulating material 104 is attached to the inner surface of the outer box 101 . A pipe 106 through which a refrigerant flows is arranged on the inner surface of the outer casing 101 .

A groove portion 105 is formed in the plate-shaped heat insulating material 104 . The groove portion 105 is a portion formed by recessing the widthwise outer surface of the plate-shaped heat insulating material 104 . A pipe 106 is accommodated in the groove portion 105 . With this configuration, it is possible to suppress the amount of protrusion of the pipe 106 in the width direction, and to suppress deformation of the outer casing 101 along the pipe 106 in the step of foaming the foamed heat insulating material 103 .

Japanese Patent No. 4111096

However, the refrigerator described above has room for improvement from the viewpoint of heat insulation of the refrigerator.

Specifically, referring to FIG. 9, a groove portion 105 is formed in plate-shaped heat insulating material 104 in a portion where pipe 106 is arranged. The plate-like heat insulating material 104 becomes thinner in the portion where the groove portion 105 is formed. As a result, there is a problem in that the heat insulating properties of the plate-shaped heat insulating material 104 in the portion where the groove 105 is formed deteriorates, and the energy required to keep the storage chamber 107 within a predetermined temperature range increases. In addition, if heat insulation is prioritized and the main surface facing the outside of the plate-shaped heat insulating material 104 is flat, the pipe 106 protrudes outward and the outer box 101 is curved along the shape of the pipe 106. there were.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its object is to provide a refrigerator having a structure that suppresses the deformation of the outer case and enhances the heat insulating properties of the plate-shaped heat insulating material. .

A refrigerator according to the present invention includes a heat insulating box having a storage chamber formed therein, and a refrigerant pipe. The heat insulating box includes an outer box forming the outer surface of the heat insulating box and An inner box is provided, and a heat insulating material is provided between the outer box and the inner box, and the heat insulating material is a plate-shaped heat insulating material that is provided near the outer surface of the inner box. and a filled heat insulating material that is foam-filled between the outer case and the inner case, and the refrigerant pipe is disposed between the outer case and the plate-like heat insulating material, and the A groove is formed by partially protruding the outer box outward in the width direction, and the refrigerant pipe is housed in the groove.

Further, in the refrigerator of the present invention, a hole is formed by partially opening the groove, and the inside of the groove and the outside of the heat insulating box communicate with each other via the hole. and

Further, in the refrigerator of the present invention, the refrigerant pipe is arranged on one side end inside the groove, and the hole is arranged on the other side end side.

Moreover, in the refrigerator of the present invention, the principal surface facing the outside of the plate-shaped heat insulating material is a flat surface.

Moreover, in the refrigerator of the present invention, a plurality of grooves are formed.

A refrigerator according to the present invention includes a heat insulating box having a storage chamber formed therein, and a refrigerant pipe. The heat insulating box includes an outer box forming the outer surface of the heat insulating box and An inner box is provided, and a heat insulating material is provided between the outer box and the inner box, and the heat insulating material is a plate-shaped heat insulating material that is provided near the outer surface of the inner box. and a filled heat insulating material that is foam-filled between the outer case and the inner case, and the refrigerant pipe is disposed between the outer case and the plate-like heat insulating material, and the A groove is formed by partially protruding the outer box outward in the width direction, and the refrigerant pipe is housed in the groove. According to the refrigerator of the present invention, by storing the refrigerant pipes in the grooves formed in the outer case, the outer case is prevented from being deformed in accordance with the shape of the refrigerant pipes, and the appearance of the refrigerator is deteriorated. can be prevented.

Further, in the refrigerator of the present invention, a hole is formed by partially opening the groove, and the inside of the groove and the outside of the heat insulating box communicate with each other via the hole. and According to the refrigerator of the present invention, the inside of the groove and the outside of the heat insulating box communicate with each other through the hole, so that the internal pressure of the groove is kept substantially constant when the temperature of the refrigerator changes. , the deformation of the groove is suppressed.

Further, in the refrigerator of the present invention, the refrigerant pipe is arranged on one side end inside the groove, and the hole is arranged on the other side end side. According to the refrigerator of the present invention, the refrigerant pipe and the hole can be arranged apart from each other inside the groove, and the adhesive tape used for fixing the refrigerant pipe can be prevented from blocking the hole.

Moreover, in the refrigerator of the present invention, the principal surface facing the outside of the plate-shaped heat insulating material is a flat surface. According to the refrigerator of the present invention, since the main surface facing the outside of the plate-shaped heat insulating material is a flat surface, the thickness of the heat insulating material can be sufficiently secured over the entire area of the plate-shaped heat insulating material. It is possible to improve the heat insulation effect by

Moreover, in the refrigerator of the present invention, a plurality of grooves are formed. According to the refrigerator of the present invention, by forming a plurality of grooves, most of the meandering refrigerant pipe can be accommodated in the grooves.

It is a perspective view showing a refrigerator concerning an embodiment of the present invention. It is a side sectional view showing a refrigerator concerning an embodiment of the present invention. It is a perspective view which shows the outer case of the refrigerator which concerns on embodiment of this invention. FIG. 4 is a perspective view showing the outer case of the refrigerator according to the embodiment of the present invention from another angle; 1 is an exploded perspective view showing an outer case side plate, a refrigerant pipe, and a side plate-shaped heat insulating material of a refrigerator according to an embodiment of the present invention; FIG. 1 is a cross-sectional view partially showing a refrigerator according to an embodiment of the present invention; FIG. It is a perspective view which shows the manufacturing method of the refrigerator which concerns on embodiment of this invention. It is a perspective view which shows the manufacturing method of the refrigerator which concerns on embodiment of this invention. It is a perspective view which shows the manufacturing method of the refrigerator which concerns on embodiment of this invention. It is a sectional view showing a refrigerator concerning background art.

Hereinafter, refrigerator 10 concerning an embodiment of the present invention is explained in detail based on a drawing. In the following description, the up-down direction indicates the height direction of refrigerator 10 , the left-right direction indicates the width direction of refrigerator 10 , and the front-rear direction indicates the depth direction of refrigerator 10 . Further, the same reference numerals are used for the same members, and repeated explanations are omitted.

FIG. 1 is a perspective view showing a refrigerator 10. FIG. Refrigerator 10 is formed with refrigerating compartment 12 and freezing compartment 13 as storage compartments inside heat insulating box body 11 . The front opening of the refrigerating compartment 12 is closed with an insulating door 34, and the front opening of the freezing compartment 13 is closed with an insulating door 35. - 特許庁The heat insulating door 34 and the heat insulating door 35 are rotary doors rotatably connected to the heat insulating box 11 at the right end thereof, for example. As the heat insulating door 34 and the heat insulating door 35, a drawer type door may be employed.

A groove 30 is formed on the left side surface of the heat insulating box 11 . A specific configuration of the groove portion 30 will be described later with reference to FIG. 3A and the like. Although not shown here, the groove 30 is also formed on the right side surface of the heat insulating box 11 .

FIG. 2 is a side sectional view showing the refrigerator 10. As shown in FIG. As shown in FIG. 2, a cooling chamber 27 is defined behind the freezing chamber 13, and an evaporator 26 is accommodated in the cooling chamber 27. As shown in FIG. A machine room 14 is formed behind the lowermost portion of the heat insulating box 11, and a compressor 29 is housed in the machine room 14. As shown in FIG. The evaporator 26 and compressor 29 are connected to expansion means and a condenser (not shown) to form a vapor compression refrigeration cycle. Here, each constituent device constituting the refrigeration cycle is connected to each other by a refrigerant pipe 38, which will be described later. A refrigerant used in a refrigerating cycle flows through the refrigerant pipe 38, which will be described later. Moreover, the refrigerator compartment 12 and the freezer compartment 13 are separated by a heat insulating partition wall 33 . The heat insulation partition wall 33 has a heat insulation structure similar to that of the heat insulation box 11 .

A blower 28 is arranged above the cooling chamber 27 . Blower 28 blows the air inside cooling chamber 27 cooled by evaporator 26 to refrigerating chamber 12 and freezing chamber 13 . A damper 19 is interposed in the air passage to the refrigerator compartment 12 . A control device (not shown) detects the internal temperature of the refrigerator compartment and controls opening and closing of the damper 19 . Thereby, the flow rate of cold air to the refrigerator compartment 12 is adjusted, and the internal temperature of the refrigerator compartment 12 is kept constant. Therefore, the refrigerating compartment 12 is cooled to the refrigerating temperature zone, and the freezing compartment 13 is cooled to the freezing temperature zone. Also, the cool air that has cooled the refrigerator compartment 12 and the freezer compartment 13 returns to the cooling compartment 27 . In FIG. 2, arrows indicate the flow of cool air. A defrost heater 20 for melting frost on the evaporator 26 is provided below the evaporator 26 .

The heat insulating box body 11 includes an outer box 15 made of steel plate forming the outer shape of the refrigerator 10, an inner box 16 made of a box-shaped synthetic resin plate formed inside the outer box 15, the outer box 15 and the inner box 16. and a heat insulating material 17 disposed between.

The heat insulating material 17 has a rear plate-shaped heat insulating material 25 adhered to the inner surface of the outer box 15 and a filling heat insulating material 23 filling the space between the outer box 15 and the inner box 16 . The rear surface plate-shaped heat insulating material 25 is obtained by storing an aggregate of fibers such as glass in a bag and evacuating the inside of the bag. For example, foamed urethane is adopted as the filling heat insulating material 23 . By adopting the rear plate-shaped heat insulating material 25 having an extremely high heat insulating effect as a part of the heat insulating material 17, the refrigerating compartment 12 and the freezing compartment 13 can be well insulated from the outside atmosphere, and the power consumption of the refrigerator 10 can be reduced. . Here, the rear plate-shaped heat insulating material 25 is also called a vacuum heat insulating material.

3A and 3B are perspective views showing outer casing 15 of refrigerator 10 described above. FIG. 3A is a perspective view of the outer case 15 as seen from the front right side. FIG. 3B is a perspective view of the outer case 15 as seen from the front left side.

The outer case 15 is formed by bending a thin steel plate having a thickness of about 0.5 mm, and includes a rear plate 151 (see FIG. 2) and an outer wall extending forward from the left and right ends of the rear plate 151. It has a box side plate 152 and an outer box top plate 153 extending forward from the upper end of the outer box rear plate 151 .

The groove portion 30 is formed by partially protruding the outer case side plate 152 outward in the width direction. The grooves 30 are formed in both the right outer case side plate 152 and the left outer case side plate 152 . A coolant pipe 38 , which will be described later, is accommodated in the groove portion 30 . Specifically, the groove portion 30 has a groove portion 301, a groove portion 302 and a groove portion 303 from the front. The grooves 301, 302, and 303 are arranged at substantially equal intervals and extend substantially linearly along the vertical direction.

A hole 32 is formed by partially opening the groove 30 . Specifically, by opening the groove 301, a hole 321 is formed, by opening the groove 302, a hole 322 is formed, and by opening the groove 303, a hole 323 is formed. The internal space of the groove portion 301 and the outside communicate with each other through the hole portion 321 . The inside and outside of the groove portion 302 communicate with each other through the hole portion 322 . The hole portion 323 allows communication between the inside and the outside of the groove portion 303 . Hole 321, hole 322 and hole 323 are substantially circular openings. Although one hole 321 is formed in the groove 301 or the like here, a plurality of holes 321 may be formed in the groove 301 or the like.

FIG. 4 is an exploded perspective view showing the outer box side plate 152, the refrigerant pipe 38, and the side plate-shaped heat insulating material 22. As shown in FIG. The refrigerant pipe 38 is arranged between the outer box side plate 152 and the side plate-shaped heat insulating material 22 . In the actual refrigerator 10 , the refrigerant pipe 38 and the side plate-shaped heat insulating material 22 are attached to the left side surface of the outer case side plate 152 , and most of the refrigerant pipe 38 is accommodated in the groove 30 .

Refrigerant pipe 38 is a pipe that is partially meandering, made of metal such as iron or copper, and through which a high-temperature refrigerant used in the above-described refrigeration cycle flows. The coolant pipe 38 has a longitudinally extending portion 384 , a laterally extending portion 385 , a longitudinally extending portion 383 , a laterally extending portion 386 and a longitudinally extending portion 382 . The longitudinally extending portion 384, the longitudinally extending portion 383, and the longitudinally extending portion 382 are portions that extend substantially linearly along the vertical direction. The laterally extending portion 385 and the laterally extending portion 386 are portions extending substantially linearly along the front-rear direction.

A longitudinally extending portion 384, a longitudinally extending portion 383 and a longitudinally extending portion 382 of the refrigerant pipe 38 are accommodated in the groove portion 301, the groove portion 302 and the groove portion 303, respectively.

FIG. 5 is a cross-sectional view showing the configuration of the side plate-shaped heat insulating material 22, the outer box side plate 152, and the refrigerant pipe 38 of the refrigerator 10. As shown in FIG.

As described above, the grooves 303, 302, and 301 are formed by projecting the outer box side plate 152 outward in a rectangular shape. A vertically extending portion 382 is housed in the groove portion 303 , a vertically extending portion 383 is housed in the groove portion 302 , and a vertically extending portion 384 is housed in the groove portion 301 . With such a configuration, the area of the outer case side plate 152 can be increased, and the high-temperature refrigerant flowing inside the vertically extending portions 382, 383, and 384 can be effectively cooled. can.

The longitudinally extending portion 382 is fixed inside the groove portion 303 by an adhesive means such as aluminum tape. By doing so, the vertically extending portion 382 can be brought into close contact with a predetermined portion of the inner surface of the groove portion 303, and the high-temperature coolant flowing inside the vertically extending portion 382 can be effectively cooled. This matter also applies to the longitudinally extending portion 383 and the longitudinally extending portion 384 .

Inside the groove 303, the longitudinal extension 382 is arranged at the rear end and the hole 323 is formed at the front end. By doing so, the longitudinally extending portion 382 and the hole portion 323 can be separated from each other inside the groove portion 303, and the hole portion 323 is closed by the adhesive tape used for adhering the longitudinally extending portion 382. can be prevented. This matter also applies to the grooves 302 and 301 .

Based on FIGS. 6 to 8 and further referring to the above-described figures, the manufacturing method of the above-described refrigerator 10 will be described. FIG. 6 is a perspective view showing the outer case 15. As shown in FIG. FIG. 7 is a perspective view showing the outer case 15 in which the refrigerant pipe 38 is incorporated. FIG. 8 is a perspective view showing the outer case 15 to which the side plate-shaped heat insulating material 22 is fixed.

First, referring to the perspective view of FIG. 6, the outer case 15 is prepared. As described above, the outer case 15 is made of a metal plate bent into a predetermined shape, and has the outer case top surface plate 153 and the outer case side plate 152 . In addition, the inner box 16 and the like shown in FIG. 2 are prepared separately. Furthermore, grooves 301 , 302 and 303 are formed in the side plate 152 of the outer case.

Next, referring to FIG. 7, the refrigerant pipe 38 is incorporated into the side plate 152 of the outer case. The fixing of the refrigerant pipe 38 to the outer box side plate 152 is performed, for example, by adhering the refrigerant pipe 38 at a plurality of locations with an adhesive tape or the like. As shown in FIG. 5 , longitudinally extending portion 382 , longitudinally extending portion 383 and longitudinally extending portion 384 are secured near the ends of grooves 301 , 302 and 303 .

Next, referring to FIG. 8, the side plate-shaped heat insulating material 22 is adhered to the outer box side plate 152 . As described above, the inner surface of the outer box side plate 152 is coated with an adhesive. Therefore, by attaching the side plate-shaped heat insulating material 22 to a predetermined position on the inner surface of the outer box side plate 152 in the width direction, the outer box side plate 152 can be easily fixed. In addition, the top plate-shaped heat insulating material 24 is attached to the bottom surface of the outer box top plate 153 of the outer box 15 .

After the above steps are completed, the inner box 16 and the rear panel 151 of the outer box shown in FIG. After the filling process is finished, the refrigerator 10 is manufactured by attaching each component shown in FIG.

According to this embodiment, the main effects described below can be obtained.

Referring to FIG. 4, by housing the refrigerant pipe 38 in the groove 30 formed in the outer case side plate 152 of the outer case 15, the outer case 15 is prevented from being deformed according to the shape of the refrigerant pipe 38. It is possible to prevent the appearance of the refrigerator 10 from deteriorating. Furthermore, by increasing the area of the outer case side plate 152, the high-temperature refrigerant flowing inside the refrigerant pipe 38 via the outer case side plate 152 can be effectively cooled.

Referring to FIG. 5, the interior and exterior of groove 303 are communicated via hole 323, so that the internal pressure of groove 303 is kept substantially constant when temperature changes act on refrigerator 10. Deformation of the groove portion 30 is suppressed.

Referring to FIG. 5 , longitudinally extending portion 382 and hole portion 323 can be spaced apart inside groove portion 303 , and adhesive tape used for fixing longitudinally extending portion 382 closes hole portion 32 . You can prevent it from slipping.

With reference to FIG. 5, since the main surface facing the outside of the side plate-shaped heat insulating material 22 is a flat surface, the thickness of the side plate-shaped heat insulating material 22 is sufficiently increased over the entire area of the side plate-shaped heat insulating material 22. can be secured, and the heat insulating effect of the side plate-shaped heat insulating material 22 can be improved.

With reference to FIG. 3A , by forming a plurality of grooves 30 , most of the meandering refrigerant pipe 38 can be accommodated in the grooves 30 .

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. Moreover, each form described above can be combined with each other.

10 Refrigerator 11 Heat insulation box body 12 Refrigerator compartment 13 Freezer compartment 14 Machine room 15 Outer box 151 Outer box rear plate 152 Outer box side plate 153 Outer box top plate 16 Inner box 17 Heat insulating material 19 Damper 20 Defrost heater 22 Side plate heat insulation Material 23 Filling heat insulating material 24 Upper plate heat insulating material 25 Rear plate heat insulating material 26 Evaporator 27 Cooling chamber 28 Blower 29 Compressor 30 Groove 301 Groove 302 Groove 303 Groove 32 Hole 321 Hole 322 Hole 323 Hole 33 Thermal insulation Partition wall 34 Insulated door 35 Insulated door 38 Refrigerant pipe 382 Vertically extending portion 383 Vertically extending portion 384 Vertically extending portion 385 Horizontally extending portion 386 Horizontally extending portion 100 Refrigerator 101 Outer box 102 Inner box 103 Foam insulation 104 Plate-shaped insulation 105 Groove 106 Pipe 107 Storage room

Claims (5)

A heat insulating box having a storage chamber formed therein and a refrigerant pipe,
The heat insulating box includes an outer box forming the outer surface of the heat insulating box, an inner box disposed inside the outer box, and a heat insulating material disposed between the outer box and the inner box. , and
The heat insulating material includes a plate-shaped heat insulating material disposed near the outer surface of the inner box, and a filling heat insulating material foam-filled between the outer box and the inner box,
The refrigerant pipe is disposed between the outer case and the plate-shaped heat insulating material,
A groove is formed by partially protruding the outer box outward in the width direction,
The refrigerator, wherein the refrigerant pipe is accommodated in the groove. A hole is formed by partially opening the groove,
2. The refrigerator according to claim 1, wherein the interior of said groove and the exterior of said heat insulating box communicate with each other via said hole. 3. The refrigerator according to claim 2, wherein the refrigerant pipe is arranged on one side end of the groove, and the hole is arranged on the other side of the groove. 4. The refrigerator according to any one of claims 1 to 3, wherein a main surface of said plate-shaped heat insulating material facing outward is a flat surface. 5. The refrigerator according to any one of claims 1 to 4, wherein a plurality of said grooves are formed.

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