JP2011117697A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator which efficiently radiates heat from the condensing section in a refrigerating cycle to the outside of the refrigerator, and is easily recycled. <P>SOLUTION: This refrigerator 1 includes a heat insulating housing 100, refrigerant piping 210, a compressor 220 and a condenser 230. The compressor 220 compresses a refrigerant circulated in the refrigerant piping 210. The condenser 230 includes part of the refrigerant piping 210 and condenses the refrigerant compressed by the compressor 220. The heat insulating housing 100 includes an outer box 110, an inner box 120 disposed inside the outer box 110, and a heat insulating material 130 disposed between the outer box 110 and the inner box 120. The outer box 110 has a curved section 111 curved to form a projecting face 113 on its outer side and a recessed face 112 on its inner side. At least part of the refrigerant piping 210 included in the condenser 230 is disposed to be into tight contact with the recessed face 112 of the curved section 111. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a refrigerator.

  In general, a household refrigerator is configured by a heat insulating box that covers the entire refrigerator, a door that covers an opening formed in the heat insulating box so that the opening can be opened or closed, and components that form a refrigeration cycle. The heat insulation box is constituted by a steel plate outer box and a synthetic resin inner box, and a heat insulating material filled between the outer box and the inner box. Inside the heat insulation box, a storage room for storing the object to be cooled and a machine room for storing a part of the refrigeration cycle components are formed. The door of the refrigerator is provided to open and close the storage room.

  The refrigerator refrigeration cycle includes a compressor that compresses the refrigerant and causes the refrigerant to circulate in the refrigeration cycle, a condenser that radiates heat from the refrigerant to the outside and condenses the refrigerant, and a capillary tube that performs the expansion process of the refrigerant And an evaporator that evaporates the refrigerant and cools the inside of the warehouse, and a refrigerant pipe that connects these members.

  Among the members constituting the refrigeration cycle, the condenser is configured by combining a radiator plate, a dew proof pipe, a radiator, and the like. A heat sink is comprised by making refrigerant | coolant piping contact the inner side of the steel plate which comprises an outer case. The dew-proof pipe is for preventing condensation near the contact portion between the heat-insulating box and the door. The radiator is installed in an empty space other than the storage room.

  2. Description of the Related Art Conventionally, some household refrigerators bear a part of the refrigerant condensing process in a refrigeration cycle by a heat radiating plate configured by closely adhering a refrigerant pipe to the inside of an outer box.

  For example, in a refrigerator described in Japanese Patent Application Laid-Open No. 2003-130530 (Patent Document 1), a heat radiating pipe that also serves as a condenser is disposed on a back plate on the rear surface of the outer box of the refrigerator. In this refrigerator, the heat radiating pipe is embedded in the foam heat insulating material on the back surface of the outer box.

  FIG. 5 is a view showing a cross section of a heat sink of a condenser in a conventional refrigerator.

  As shown in FIG. 5, in a conventional refrigerator, a heat insulating material 930 is filled between an outer box 910 and an inner box 920 to form a heat insulating box. The heat sink 900 in the condenser is configured so that the refrigerant pipe 940 is in close contact with the inner surface of the outer box 910. The refrigerant pipe 940 is fixed inside the outer box 910 using a metal tape 950 having a high thermal conductivity.

  In the refrigerator, if the wall surface is a wall surface other than the front wall surface in which the opening for taking in and out the cooling object is formed, the refrigerant pipe 940 is connected to the outer box 910 as described above. The heat sink 900 can be configured by being fixed inside. By doing in this way, the area of the refrigerant | coolant piping 940 which contacts the outer case 910 can be enlarged, and the thermal radiation area of the refrigerant | coolant piping 940 can be enlarged more. As described above, many methods are conventionally employed in which the heat radiating plate 900 is configured by bringing the refrigerant pipe 940 into close contact with the inner surface of the outer box 910.

  However, as shown in FIG. 5, the steel plate constituting the outer box 910 and the refrigerant pipe 940 are only in line contact. When the steel plate constituting the outer box 910 and the refrigerant pipe 940 are only in line contact, the heat of the refrigerant in the refrigerant pipe 940 is efficiently released to the outside of the refrigerator via the heat radiating plate 900. I can't say that. When the heat of the refrigerant is not efficiently released to the outside of the refrigerator, the amount of heat entering from the refrigerant pipe 940 into the refrigerator increases.

  Therefore, for example, in the refrigerator described in Japanese Utility Model Publication No. 59-184079 (Patent Document 2), the condenser pipe is formed in a flat shape, and the condenser pipe is brought into surface contact with the inner surface of the outer box. By bringing the condensing pipe into surface contact with the inner surface of the outer box, the area of the condensing pipe in contact with the outer box is increased.

JP 2003-130530 A Japanese Utility Model Publication No. 59-184079

  However, in the heat sink of a conventional refrigerator such as the refrigerator described in Japanese Patent Application Laid-Open No. 2003-130530 (Patent Document 1) and the refrigerator described in Japanese Utility Model Publication No. 59-184079 (Patent Document 2), the inner side of the outer box The refrigerant pipe (condensation pipe) installed so as to be in close contact with the surface causes unevenness inside the outer box. Insulation is filled between the outer box and the inner box placed inside the outer box, so if there are irregularities inside the outer box, when the refrigerator is discarded and disassembled, It becomes difficult to peel off from the material. If it becomes difficult to separate the outer box from the heat insulating material, the recyclability of the refrigerator is lowered.

  Therefore, an object of the present invention is to provide a refrigerator that can efficiently dissipate heat from the condensing part of the refrigeration cycle to the outside of the refrigerator and can be easily recycled.

  The refrigerator according to the present invention includes a heat insulating box, a refrigerant pipe, a compression unit, and a condensation unit. The refrigerant pipe circulates a refrigerant for cooling the inside of the heat insulating box. A compression part compresses the refrigerant | coolant which distribute | circulates the inside of refrigerant | coolant piping. The condensing unit includes a part of the refrigerant pipe and condenses the refrigerant compressed by the compression unit.

  The heat insulating box includes an outer box, an inner box disposed inside the outer box, and a heat insulating material disposed between the outer box and the inner box. The outer box has a curved portion that is curved so that a convex surface is formed on the outer side and a concave surface is formed on the inner side. At least a part of the refrigerant pipe included in the condensing part is disposed so as to be in close contact with the concave surface of the curved part.

  The outer box has a curved portion that is curved so that a convex surface is formed on the outer side and a concave surface is formed on the inner side, and at least a part of the refrigerant pipe is disposed so as to be in close contact with the concave surface of the curved portion, Compared with the case where the refrigerant pipe is disposed on the flat inner surface of the outer box, the height of the refrigerant pipe protruding on the inner surface of the outer box can be reduced. That is, the unevenness formed by the refrigerant pipe on the inner surface of the outer box can be reduced. By dissipating the unevenness formed on the inner surface of the outer box, the heat insulating material placed between the outer box and the inner box can be easily separated from the outer box and the refrigerant pipe when the heat insulating box is disassembled. Become. By doing in this way, it becomes possible to make recycling of a refrigerator easy.

  Further, the outer box has a curved portion that is curved so that a convex surface is formed on the outside and a concave surface is formed on the inside, and at least a part of the refrigerant pipe is disposed so as to be in close contact with the concave surface of the curved portion. Thus, the contact area between the outer box and the refrigerant pipe can be increased as compared with the case where the refrigerant pipe is disposed on the flat surface of the outer box. By increasing the contact area between the outer box and the refrigerant pipe, it is possible to increase the heat radiation efficiency when heat is radiated from the refrigerant pipe to the outside of the refrigerator through the outer box.

  Further, the outer box having the curved portion increases the surface area of the outer box as compared to the case without the curved portion. By increasing the surface area of the outer box, the heat dissipation efficiency can be further improved.

  Furthermore, even when the refrigerator is installed indoors, even if it is placed in contact with the wall surface of the room, the wall surface and the convex surface of the curved portion come into contact with each other, so the entire outer surface of the outer box and the wall surface do not adhere to each other. That is, a space is formed between the outer box and the wall surface. By doing in this way, even if it is a case where a refrigerator is arrange | positioned in contact with the wall surface of a room | chamber interior, the thermal radiation efficiency from a condensation part can be maintained.

  By increasing the heat dissipation efficiency, the heat dissipation efficiency can be maintained even if the area of the heat sink is reduced. Further, the length of the refrigerant pipe can be shortened. By shortening the length of the refrigerant pipe, the refrigerator can be more easily recycled.

  In this way, it is possible to provide a refrigerator that can efficiently dissipate heat from the condensing part of the refrigeration cycle to the outside of the refrigerator and can be easily recycled.

  In the refrigerator according to the present invention, it is preferable that the concave surface of the curved portion is formed in the same shape as the portion of the refrigerant pipe that is in close contact with the concave surface of the curved portion.

  By doing in this way, a refrigerant | coolant piping can be surface-contacted to the recessed part of a curved part, a refrigerant | coolant piping and a curved part can be closely_contact | adhered in a wider range, and heat dissipation efficiency can be improved.

  In the refrigerator according to the present invention, the width of the curved portion in the direction along the diameter of the refrigerant pipe is the same as the diameter of the refrigerant pipe in the direction along the surface of the outer box at the portion where the refrigerant pipe is in close contact with the concave surface of the curved portion. It is preferable.

  By doing in this way, the contact area of refrigerant | coolant piping and the concave surface of a curved part can be maximized.

  In the refrigerator according to the present invention, on the concave surface of the curved portion, the depth from the inner surface of the outer box is a refrigerant in a direction orthogonal to the surface of the outer box at the portion where the refrigerant pipe is in close contact with the concave surface of the curved portion. The size is preferably the same as the diameter of the pipe.

  By doing in this way, since refrigerant | coolant piping does not protrude from the inner surface of an outer case, the unevenness | corrugation by arrange | positioning refrigerant | coolant piping on the inner surface of an outer case does not arise.

  In the refrigerator according to the present invention, it is preferable that the outer box has a plurality of curved portions, and the plurality of curved portions are arranged along one direction at regular intervals.

  The convex surface of the curved portion protrudes from the outer surface of the outer box. In order to obtain the maximum heat dissipation performance of the refrigerator, it is preferable to provide the outer box with irregularities that are faithfully aligned with the arrangement and shape of the refrigerant piping. However, in this case, when the shape of the refrigerant pipe is complicated, irregularities with a complicated shape are generated on the outer surface of the outer box, which is not preferable in appearance. Therefore, the outer box has a plurality of curved portions, and the plurality of curved portions are arranged along one direction at regular intervals, so that the convex surface of the curved portion protruding on the outer surface of the outer box is formed. It can be a regular shape. By doing in this way, even if the convex surface of a curved part protrudes in the outer surface of the outer case which was smooth conventionally, compared with the refrigerator which has the conventional smooth outer surface, an appearance is not spoiled greatly. In addition, the heat radiation performance can be improved as compared with the prior art by closely fixing the refrigerant pipe having a shape along the direction and interval of the unevenness in close contact with the concave portion inside the outer box.

  As described above, according to the present invention, it is possible to provide a refrigerator capable of efficiently dissipating heat from the condensing part of the refrigeration cycle to the outside of the refrigerator.

It is a perspective view showing roughly the whole refrigerator concerning one embodiment of the present invention. It is a figure which shows typically the refrigerating cycle of the refrigerator which concerns on one embodiment of this invention. In the refrigerator which concerns on one embodiment of this invention, it is a fragmentary sectional view when the cross-sectional part shown with a broken line in FIG. 1 is seen from the direction shown by the III-III line. In the refrigerator which concerns on one embodiment of this invention, it is a fragmentary sectional view when the cross-sectional part shown with a broken line in FIG. 1 is seen from the direction shown by the IV-IV line. It is a figure which shows the cross section of the heat sink of the conventional refrigerator.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the refrigerator 1 according to one embodiment of the present invention is entirely covered with a heat insulating box 100 filled with a heat insulating material between an outer box 110 and an inner box. The inside of the heat insulation box 100 is made difficult to be affected by outside air. A door 101 is disposed on one side wall surface of the heat insulating box 100. The side on which the door 101 is disposed is assumed to be the front side of the refrigerator 1.

  Inside the heat insulation box 100, a plurality of storage rooms such as a refrigerator and a freezing room are formed. A plurality of openings for communicating the inside of the plurality of storage chambers with the outside of the heat insulating box 100 are formed on the front side of the heat insulating box 100. The plurality of openings of the heat insulating box 100 are covered with a door 101 attached to the front side of the refrigerator 1 so as to be opened and closed.

  On the side wall surface of the heat insulating box 100, a plurality of curved portions 111 are arranged. The curved portion 111 is formed so as to protrude outward from the surface of the heat insulating box 100 and extends along the vertical direction from the upper end to the lower end of the side wall surface of the heat insulating box 100. The plurality of bending portions 111 are arranged in a horizontal direction at regular intervals, that is, at regular intervals.

  As shown in FIG. 2, a refrigeration cycle 200 is accommodated inside the heat insulating box 100 of the refrigerator 1. The refrigeration cycle 200 is for cooling the storage chamber formed inside the heat insulating box 100.

  The refrigeration cycle 200 includes a refrigerant pipe 210 through which a refrigerant flows, a compressor 220 as a compression unit, a condenser 230 as a condensing unit, a dryer 240, a capillary tube 250, and an evaporator 260.

  The refrigerant pipe 210 has a circular cross section, and connects the compressor 220, the condenser 230, the dryer 240, the capillary tube 250, and the evaporator 260 in an annular shape.

  The compressor 220 compresses the refrigerant flowing through the refrigerant pipe 210. The condenser 230 includes a part of the refrigerant pipe 210 and condenses the refrigerant compressed by the compressor 220.

  The condenser 230 includes a heat sink 231 and a dew condensation prevention pipe 232. As will be described later, the heat radiating plate 231 is configured by a refrigerant pipe 210 and an outer box of the heat insulation box 100 arranged along the left and right side wall surfaces and the rear wall surface of the heat insulation box body 100. The dew condensation prevention pipe 232 includes a refrigerant pipe 210 disposed between the plurality of doors 101. The refrigerant pipe 210 constituting the condenser 230 is bent a plurality of times and arranged so as to meander on the inner surface of the outer box of the heat insulating box 100.

  The refrigerant pipe 210 constituting the heat radiating plate 231 of the condenser 230 is arranged so as to extend in the vertical direction at the center in the height direction of the side wall surface of the refrigerator 1. On the other hand, the refrigerant pipe 210 constituting the heat radiating plate 231 is arranged so as to extend in the horizontal direction at the upper end portion and the lower end portion of the side wall surface of the refrigerator 1.

  The shape of the cross section of the refrigerant pipe 210 constituting the condenser 230 is circular both in the part constituting the heat radiating plate 231 and in the part constituting the condensation prevention pipe 232.

  The evaporator 260 is for generating cold air by evaporating the refrigerant. The cool air generated in the evaporator 260 is supplied into the storage chamber by a blower (not shown) or the like, and cools the storage chamber.

  As shown in FIG. 3, a heat insulating material 130 is disposed between the outer box 110 and the inner box 120 disposed inside the outer box 110. The outer box 110 is formed of a steel plate. The inner box 120 is formed of a synthetic resin. A curved portion 111 is formed in the outer box 110. At least a part of the refrigerant pipe 210 is disposed inside the curved portion 111 of the outer box 110 so as to be in close contact with the curved portion 111. The refrigerant pipe 210 is fixed on the outer box 110 with a metal tape 140.

  At the position of the central portion of the side wall surface of the refrigerator 1 (FIG. 1), the refrigerant pipe 210 extends along the vertical direction. The condenser 230 includes a curved portion 111 formed in the outer box 110, a refrigerant pipe 210 closely attached to the curved section 111, and a metal tape 140 for fixing the refrigerant pipe 210 on the inner surface of the outer box 110. The heat sink 231 shown in FIG. As the metal tape 140, one having a high thermal conductivity is used.

  The curved portion 111 is formed by bending the steel plate constituting the outer box 110 so that the convex surface 113 is formed on the outer side of the outer box 110 and the concave surface 112 is formed on the inner side of the outer box 110. The concave surface 112 of the curved portion 111 is formed in the same shape as the portion of the refrigerant pipe 210 that is in close contact with the concave surface 112 of the curved portion 111, that is, has a semicircular cross section.

  The width W of the curved portion 111 in the direction along the diameter of the refrigerant pipe 210 is the same as the diameter of the refrigerant pipe 210 in the direction along the surface of the outer box 110 at the portion where the refrigerant pipe 210 is in close contact with the concave surface 112 of the curved portion 111. It is.

  By forming the bending portion 111 in this way, about one half of the outer surface of the refrigerant pipe 210 can be brought into close contact with the concave surface 112 of the bending portion 111 at the position of the bending portion 111.

  Further, in the concave surface 112 of the curved portion 111, the depth D from the inner surface of the outer box 110 is in a direction orthogonal to the surface of the outer box 110 at the portion where the refrigerant pipe 210 is in close contact with the concave surface 112 of the curved portion 111. The diameter is the same as the diameter of the refrigerant pipe 210.

  By forming the curved portion 111 in this way, the refrigerant pipe 210 that is in close contact with the concave surface 112 is accommodated in the curved portion 111 and does not protrude from the inner surface of the outer box 110.

  The concave surface 112 of the curved portion 111 where the refrigerant pipe 210 is disposed is covered with the metal tape 140 from the inside of the outer box 110 together with the refrigerant pipe 210. Since the refrigerant pipe 210 does not protrude from the inner surface of the curved portion 111, the surface of the metal tape 140 covering the concave surface 112 and the refrigerant pipe 210 is flat. As described above, unevenness due to the arrangement of the refrigerant pipe 210 is hardly formed on the inner surface of the outer box 110. Unevenness is less likely to be formed on the surface of the heat insulating material 130 disposed between the outer box 110 and the inner box 120 inside the outer box 110.

  As shown in FIG. 4, the refrigerant pipe 210 constituting the heat radiating plate 231 of the condenser 230 (FIG. 2) extends along the horizontal direction at the upper end portion and the lower end portion of the side wall surface of the refrigerator 1 (FIG. 1). . At the upper end and the lower end of the side wall surface of the refrigerator 1 (FIG. 1), the refrigerant pipe 210 is not accommodated in the curved portion 111 and is disposed on the inner surface of the outer box 110 in the same manner as in the conventional refrigerator. 140 is fixed. The refrigerant pipe 210 is smoothly bent with a gentle curve near the boundary between the portion extending in the vertical direction and the portion extending in the horizontal direction.

  Next, the refrigerant flow in the refrigeration cycle 200 (FIG. 2) of the refrigerator 1 (FIGS. 1 and 2) will be described.

  The refrigerant flowing through the refrigerant pipe 210 is compressed by the compressor 220. The refrigerant that has been compressed by the compressor 220 into a high-temperature and high-pressure gas flows down while dissipating heat in the condenser 230 and becomes a supercooled liquid. The refrigerant subsequently passes through the dryer 240, is decompressed by the capillary tube 250, and flows into the evaporator 260. In the evaporator 260, the refrigerant evaporates to generate cool air around the evaporator 260. The refrigerant evaporated in the evaporator 260 and turned into a gas state returns to the compressor 220 again.

  In the refrigeration cycle 200 configured as described above, in the condenser 230, the heat of the refrigerant in the refrigerant pipe 210 is radiated to the outside of the refrigerator 1 through the outer box 110 in contact with the refrigerant pipe 210.

  As described above, in the heat radiating plate 231 of the condenser 230, about one-half of the outer peripheral surface of the refrigerant pipe 210 extending along the vertical direction is in surface contact with the steel plate constituting the outer box 110. By doing in this way, the heat | fever of a refrigerant | coolant can be discharge | released to the exterior of the refrigerator 1 efficiently.

  The inventors of the present invention actually compared the heat radiation performance by changing the contact area between the pipe through which hot water is circulated and the steel plate in the heat sink simulating the wall surface of the heat insulating box of the refrigerator. A copper pipe having a pipe diameter of 3.8 mm (outer circumference of about 12 mm) and a pipe length of 2.5 m was used as the refrigerant pipe. When the heat dissipation performance was confirmed for the case where the copper tube was brought into line contact with the steel plate and the case where the copper tube was brought into contact with the surface having a width of about 1.5 mm. In addition, an improvement in heat dissipation performance of 10% or more was confirmed.

  Furthermore, the present inventors conducted a simulation analysis of the heat dissipation performance when the width of the contact surface between the steel sheet and the copper tube was changed. As a result, the heat dissipation from the copper tube was proportional to the width of the contact surface. It was confirmed that the performance was improved.

  From these results, it is considered that when the contact area between the steel plate and the refrigerant pipe is about one half of the outer circumference of the refrigerant pipe as in this embodiment, the heat radiation performance is greatly improved. That is, in the refrigerator of this embodiment, the heat dissipation performance can be maintained even if the length of the refrigerant pipe constituting the condenser is significantly shortened compared to the conventional refrigerator. In the refrigerator 1, the recyclability can be further improved by reducing the length of the refrigerant pipe 210 while maintaining the heat dissipation performance of the conventional refrigerator.

  Further, the portion extending in the vertical direction in the refrigerant pipe 210 constituting the condenser 230 is accommodated in the curved portion 111 so as not to protrude from the inner surface of the outer box 110, and is in close contact with the concave surface 112. It is fixed with a tape 140. By doing so, the contact area between the steel plate and the refrigerant pipe 210 can be maximized as described above to improve the heat dissipation performance, and the unevenness on the inner surface of the outer box 110 can be reduced. it can. By reducing the unevenness on the inner surface of the outer box 110, the outer box 110, the refrigerant pipe 210, and the heat insulating material 130 can be easily separated when the heat insulating box 100 is disassembled.

  As described above, the refrigerator 1 includes the heat insulating box 100, the refrigerant pipe 210, the compressor 220, and the condenser 230. The refrigerant pipe 210 circulates a refrigerant for cooling the inside of the heat insulating box 100. The compressor 220 compresses the refrigerant flowing through the refrigerant pipe 210. The condenser 230 includes a part of the refrigerant pipe 210 and condenses the refrigerant compressed by the compressor 220.

  The heat insulating box 100 includes an outer box 110, an inner box 120 disposed inside the outer box 110, and a heat insulating material 130 disposed between the outer box 110 and the inner box 120. The outer box 110 has a curved portion 111 that is curved so that a convex surface 113 is formed on the outer side and a concave surface 112 is formed on the inner side. At least a part of the refrigerant pipe 210 included in the condenser 230 is disposed so as to be in close contact with the concave surface 112 of the curved portion 111.

  The outer box 110 has a curved portion 111 that is curved so that a convex surface 113 is formed on the outer side and a concave surface 112 is formed on the inner side, and at least a part of the refrigerant pipe 210 is in close contact with the concave surface 112 of the curved portion 111. As a result, the height of the refrigerant pipe 210 protruding on the inner surface of the outer box 110 is reduced as compared with the case where the refrigerant pipe 210 is arranged on the flat inner surface of the outer box 110. Can do. That is, the unevenness formed by the refrigerant pipe 210 on the inner surface of the outer box 110 can be reduced. When the heat insulating box 100 is disassembled by reducing the unevenness formed on the inner surface of the outer box 110, the heat insulating material 130 disposed between the outer box 110 and the inner box 120 is replaced with the outer box 110. It becomes easy to peel from the refrigerant pipe 210. By doing in this way, it becomes possible to make recycling of the refrigerator 1 easy.

  The outer box 110 has a curved portion 111 that is curved so that a convex surface 113 is formed on the outer side and a concave surface 112 is formed on the inner side, and at least a part of the refrigerant pipe 210 is in close contact with the concave surface 112 of the curved portion 111. By arrange | positioning so, compared with the case where the refrigerant | coolant piping 210 is arrange | positioned on the flat surface of the outer case 110, the contact area of the outer case 110 and the refrigerant | coolant piping 210 can be enlarged. By increasing the contact area between the outer box 110 and the refrigerant pipe 210, it is possible to increase the heat radiation efficiency when heat is radiated from the refrigerant pipe 210 to the outside of the refrigerator 1 through the outer box 110.

  In addition, the outer box 110 having the curved portion 111 increases the surface area of the outer box 110 as compared to the case without the curved portion 111. By increasing the surface area of the outer box 110, the heat dissipation efficiency can be further improved.

  Furthermore, even when the refrigerator 1 is installed indoors, even if it is placed in contact with the wall surface of the room, the wall surface and the convex surface 113 of the curved portion 111 are in contact with each other. Does not stick. That is, a space is formed between the outer box 110 and the wall surface. By doing in this way, even if it is a case where the refrigerator 1 is arrange | positioned in contact with the wall surface of a room | chamber interior, the thermal radiation efficiency from the condenser 230 can be maintained.

  By increasing the heat dissipation efficiency, the heat dissipation efficiency can be maintained even if the area of the heat dissipation plate 231 is reduced. Further, the length of the refrigerant pipe 210 can be shortened. By shortening the length of the refrigerant pipe 210, the refrigerator 1 can be more easily recycled.

  By doing so, it is possible to provide the refrigerator 1 that can efficiently dissipate heat from the condenser 230 of the refrigeration cycle to the outside of the refrigerator 1 and can be easily recycled.

  In the refrigerator 1, the concave surface 112 of the curved portion 111 is formed in the same shape as the portion of the refrigerant pipe 210 that is in close contact with the concave surface 112 of the curved portion 111.

  By doing in this way, the refrigerant | coolant piping 210 is made to surface-contact with the recessed part of the curved part 111, the refrigerant | coolant piping 210 and the curved part 111 are closely_contact | adhered in a wider range, and heat dissipation efficiency can be improved.

  Further, in the refrigerator 1, the width of the curved portion 111 in the direction along the diameter of the refrigerant pipe 210 is such that the refrigerant pipe 210 in the direction along the surface of the outer box 110 at a portion where the refrigerant pipe 210 is in close contact with the concave surface 112 of the curved portion 111. It is the same size as the diameter.

  By doing in this way, the contact area of the refrigerant | coolant piping 210 and the concave surface 112 of the curved part 111 can be maximized.

  In the refrigerator 1, the depth of the concave surface 112 of the curved portion 111 from the inner surface of the outer box 110 is the surface of the outer box 110 at the portion where the refrigerant pipe 210 is in close contact with the concave surface 112 of the curved portion 111. It is the same size as the diameter of the refrigerant pipe 210 in the orthogonal direction.

  By doing so, the refrigerant pipe 210 does not protrude from the inner surface of the outer box 110, so that unevenness due to the arrangement of the refrigerant pipe 210 on the inner surface of the outer box 110 does not occur.

  Moreover, in the refrigerator 1, the outer box 110 has the some curved part 111, and the some curved part 111 is arrange | positioned along one direction at fixed intervals.

  A convex surface 113 of the curved portion 111 protrudes from the outer surface of the outer box 110. In order to obtain the heat dissipation performance of the refrigerator 1 to the maximum, it is preferable to provide the outer box 110 with unevenness that is faithful to the arrangement and shape of the refrigerant pipe 210. However, if this is done, if the shape of the refrigerant pipe 210 is complicated, irregularities with a complicated shape are formed on the outer surface of the outer box 110, which is not preferable in appearance. Therefore, the outer box 110 has a plurality of curved portions 111, and the plurality of curved portions 111 are arranged along one direction at regular intervals, so that the outer case 110 protrudes from the outer surface of the outer box 110. The convex surface 113 of the part 111 can be made into a regular shape. By doing in this way, even if the convex surface 113 of the curved part 111 protrudes in the outer surface of the outer case 110 which was conventionally smooth, compared with the refrigerator 1 which has the conventional smooth outer surface, an external appearance is impaired greatly. There is no. In addition, the heat radiation performance can be improved as compared with the conventional case by fixing the refrigerant pipe 210 having a shape that is maximally along the direction and interval of the unevenness in close contact with the concave portion inside the outer box 110.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

  1: refrigerator, 100: heat insulation box, 110: outer box, 111: curved portion, 112: concave surface, 113: convex surface, 120: inner box, 130: heat insulating material, 200: refrigeration cycle, 210: refrigerant pipe, 220: Compressor, 230: condenser.

Claims (5)

An insulated box,
A refrigerant pipe for circulating a refrigerant for cooling the inside of the heat insulation box;
A compression section for compressing the refrigerant flowing through the refrigerant pipe;
Including a part of the refrigerant pipe, and a condensing part for condensing the refrigerant compressed by the compression part,
The heat insulation box includes an outer box, an inner box arranged inside the outer box, and a heat insulating material arranged between the outer box and the inner box,
The outer box has a curved portion that is curved so that a convex surface is formed on the outer side and a concave surface is formed on the inner side,
The refrigerator, wherein at least a part of the refrigerant pipe included in the condensing part is disposed so as to be in close contact with the concave surface of the curved part.   2. The refrigerator according to claim 1, wherein the concave surface of the curved portion is formed in the same shape as a portion of the refrigerant pipe that is in close contact with the concave surface of the curved portion.   The width of the curved portion in the direction along the diameter of the refrigerant pipe is the same size as the diameter of the refrigerant pipe in the direction along the surface of the outer box at a portion where the refrigerant pipe is in close contact with the concave surface of the curved portion. The refrigerator according to claim 2.   In the concave surface of the curved portion, the depth from the inner surface of the outer box is the diameter of the refrigerant pipe in a direction perpendicular to the surface of the outer box in a portion where the refrigerant pipe is in close contact with the concave surface of the curved portion. The refrigerator according to claim 3, which has the same size. The outer box has a plurality of the curved portions,
The refrigerator according to any one of claims 1 to 4, wherein the plurality of curved portions are arranged along a single direction at regular intervals.

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