refrigerator

Abstract

To provide a refrigerator that suppresses condensation on electrical wiring. [Solution] The refrigerator 1 of the present invention comprises an outer box 1s and an inner box 1u with an open front, vacuum insulation materials 25a, 25b, and 25c arranged in the space between the outer box 1s and the inner box 1u, low temperature zones 3r, 4r, and 5r, a high temperature zone 2r set to a higher temperature than the low temperature zones 3r, 4r, and 5r, a partition 28 arranged between the low temperature zones 3r, 4r, and 5r and the high temperature zone 2r and equipped with an internal insulation member 13, and a linear member 15 having one end exposed to the low temperature zones 3r, 4r, and 5r, a central end embedded in the internal insulation member 28, and the other end exposed to the high temperature zone 2r.

Description

Technical Field

[0001] The present invention relates to a refrigerator.

Background Art

[0002] In a refrigerator, wiring is installed through a freezer compartment in the freezer temperature range or its vicinity and a refrigerator compartment in the refrigeration temperature range or its vicinity in order to supply current to electronic components and electrical components inside the cabinet. As a prior art document related to the above configuration, there is the following Patent Document 1. In Patent Document 1, heat insulation on both side surfaces and the back surface of a heat insulation cabinet (12) is exclusively composed of heat insulation members (15) which are vacuum heat insulation panels, and a foam heat insulation material filled by so-called on-site foaming is not provided (paragraph 0016, FIG. 6). In a heat insulation cabinet assuming the use of a foam heat insulation material filled by on-site foaming, it is possible to let wiring or the like crawl in the space finally filled with the foam heat insulation material. However, in the heat insulation cabinet (12) like Patent Document 1, there is little space for letting wiring or the like crawl inside.

[0003] Therefore, in Patent Document 1, along a fixture (511) extending in the vertical direction along a vertical corner portion formed by the left side wall (25) and the back wall (26) etc. of the inner box, an electric wire (52) is arranged together with a corner heat insulation member (56) (paragraphs 0036, 0037, FIGS. 3, FIG. 9, FIG. 14). A part of the electric wire (52) comes out to the storage compartment side through an opening (65) etc. of the corner heat insulation member (56) (paragraph 0050).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, although not necessarily clear from the description in Patent Document 1, it can be inferred that the bundled electric wire (52) extends across multiple storage compartments such as the freezer compartment (42) and the refrigerator compartment (39), given that the electric wire (52) is integrated with the corner insulation member (56) (paragraph 0055), the corner insulation member (56) is shown to connect each storage compartment such as the refrigerator compartment (39) and the freezer compartment (42) vertically as depicted in the above drawings, and the electric wire (52) is connected to the ventilation fan and various sensors in the storage compartments (paragraphs 0032, 0051).

[0006] In a refrigerator, the freezer compartment (42) is in the freezing temperature zone, unlike the refrigerator compartment (39) and vegetable compartment (40), which are in the refrigeration temperature zone. Therefore, it is an extremely low-temperature environment that is far removed from the refrigeration temperature zone. Although Patent Document 1 includes a corner insulation member (56), the electric wire (52) extends almost straight vertically across the refrigeration temperature zone and the freezing temperature zone. It is presumed that the electric wire (52) is exposed into each storage compartment (39, 40, 42) from an opening (65) and connected to sensors, etc. Therefore, when the part of the electric wire (52) exposed to the freezing compartment (42) is cooled, the coldness is transferred to other parts of the electric wire (52). If this heat transfer reaches the part of the electric wire (52) exposed to the storage compartment in the refrigeration temperature zone, and becomes colder than the surrounding air in the refrigeration temperature zone, condensation may occur because air can hold more moisture at higher temperatures. Patent Document 1 does not mention anything about suppressing condensation caused by the heat transfer of the electric wire (52) itself. [Means for solving the problem]

[0007] To solve the aforementioned problems, the refrigerator of the present invention comprises an outer box and an inner box with an open front, a vacuum insulation material disposed in the space between the outer box and the inner box, a low-temperature zone, a high-temperature zone set to a higher temperature than the low-temperature zone, a partition disposed between the low-temperature zone and the high-temperature zone and equipped with an internal insulation member, and a linear member having one end exposed to the low-temperature zone, a central end embedded in the internal insulation member of the partition, and the other end exposed to the high-temperature zone. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a refrigerator that can suppress condensation on electrical wiring. [Brief explanation of the drawing]

[0009] [Figure 1] This is a front view of a refrigerator according to the first embodiment of the present invention. [Figure 2] This is a cross-sectional view II in Figure 1. [Figure 3A] This is a cross-sectional view taken along line II-II in Figure 2. [Figure 3B] This is a conceptual diagram of the II-II cross-section in another example, shown in Figure 2. [Figure 4] This is a cross-sectional view corresponding to II in Figure 1 of a modified refrigerator according to the first embodiment. [Figure 5] This is a cross-sectional view of the refrigerator according to the second embodiment, corresponding to section II in Figure 1. [Figure 6] This is a perspective view of the refrigerator according to the third embodiment, viewed from the upper right front. [Figure 7] This is a cross-sectional view taken along line III-III of the insulated box of the refrigerator according to the third embodiment in Figure 6. [Figure 8] This is a cross-sectional view taken along line III-III in line with the insulation box of a refrigerator, a modified example of the third embodiment, in Figure 6. [Figure 9] This is a cross-sectional view near the boundary between the insulating partition and the refrigerator compartment, showing the wiring bundle of the fourth embodiment. [Figure 10] This is a cross-sectional view near the boundary between the insulating partition and the refrigerator compartment, showing another example of the wiring bundle in the fourth embodiment. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. <<First Embodiment>> Figure 1 is a front view of a refrigerator 1 according to a first embodiment of the present invention.

[0011] Figure 2 is a cross-sectional view of section II in Figure 1.

[0012] In the refrigerator 1 of the first embodiment shown in FIG. 1, a refrigerating compartment 2r, an ice-making compartment 3r, an upper freezing compartment 4r, a lower freezing compartment 5r, and a vegetable compartment 6r are arranged from top to bottom.

[0013] The refrigerator 1 includes a heat-insulating box body 1H (see FIG. 2) and doors (2a, 2b, 3, 4, 5, 6). The heat-insulating box body 1H has an opening 1H0 (see FIG. 2). The opening 1H0 of the heat-insulating box body 1H is opened and closed by doors (2a, 2b, 3, 4, 5, 6).

[0014] As shown in FIG. 1, in front of the front of the uppermost refrigerating compartment 2r, a left refrigerator door 2a and a right refrigerator door 2b are provided. The second-stage ice-making compartment 3r and the upper freezing compartment 4r are each provided with an ice-making compartment door 3 and an upper freezing compartment door 4. In front of the front of the third-stage lower freezing compartment 5r, a lower freezing compartment door 5 is provided. In front of the front of the lowermost vegetable compartment 6r, a vegetable compartment door 6 is provided.

[0015] The left refrigerator door 2a and the right refrigerator door 2b are in a double-leaf opening manner with respect to the heat-insulating box body 1H. The left refrigerator door 2a is pivotally supported by an upper hinge 7a and a lower hinge 8a and is rotatable in the forward direction. Similarly, the right refrigerator door 2b is pivotally supported by an upper hinge 7b and a lower hinge 8b and is rotatable in the forward direction.

[0016] The second-stage ice-making compartment door 3, the upper freezing compartment door 4, the third-stage lower freezing compartment door 5, and the lowermost vegetable compartment door 6 are pullable in the direction of the front of the paper. Ice-making compartment containers 3u, upper freezing compartment containers 4u, lower freezing compartment containers 5u, and vegetable compartment containers 6u are integrally provided at the rear of each of the doors of the ice-making compartment door 3, the upper freezing compartment door 4, the lower freezing compartment door 5, and the vegetable compartment door 6, respectively.

[0017] The lowermost vegetable compartment 6r is a storage compartment for storing vegetables, fruits, bottled beverages, etc.

[0018] The outside and inside of refrigerator 1 are separated by an insulated box 1H, which is fitted with vacuum insulation materials 25a, 25b, and 25c, and by doors (2a, 2b, 3, 4, 5, 6).

[0019] The refrigerator compartment 2r is separated from the upper freezer compartment 4r and the ice-making compartment 3r by an insulating partition wall 28. The lower freezer compartment 5r and the vegetable compartment 6r are separated by an insulating partition wall 29. Foamed insulation material 13 is filled inside both the insulating partition wall 28 and the insulating partition wall 29. The insulating partition wall 28 is arranged in a plane direction that is approximately perpendicular or perpendicular to the direction in which the low-temperature zone and the high-temperature zone are aligned. The foamed insulation material 13 can be, for example, foamed polyurethane. Furthermore, vacuum insulation material may be added to the insulated partition walls 28 and 29 to enhance their insulation properties. Alternatively, vacuum insulation material may be applied to the insulated partition walls 28 and 29 without filling them with foamed insulation material 13.

[0020] <Insulated Box Body 1H> The insulated box 1H is composed of an outer box 1s, an inner box 1u, and multiple vacuum insulation materials 25a, 25b, and 25c, as shown in Figure 2. The outer box 1s is a metal plate, such as a steel plate, that covers the insulated box 1H. The outer box 1s is made of a thin iron plate, for example, with a thickness of 0.5 mm to 0.4 mm.

[0021] The inner box 1u is made by vacuum forming a synthetic resin, such as ABS resin. The insulated box body 1H is constructed by attaching multiple vacuum insulation materials 25a, 25b, and 25c, which have lower thermal conductivity than foam insulation materials, to the inner surface of the outer box 1s to improve insulation performance. Specifically, vacuum insulation material 25a is attached to the inner surface of the top panel 1s1 of the outer box 1s. Vacuum insulation material 25b is attached to the inner surface of the back panel 1s2 of the outer box 1s. Vacuum insulation material 25c is attached to the inner surface of the bottom panel 1s3 of the outer box 1s. By applying vacuum insulation materials 25a, 25b, and 25c to the insulated box body 1H, the internal volume of the box can be increased.

[0022] As shown in Figure 2, a machine room R for housing refrigeration cycle equipment such as a compressor is formed on the rear side of the vegetable compartment 6r. Therefore, the bottom wall of the vegetable compartment 6r is higher at the rear than at the front.

[0023] <First airflow member 8ap and second airflow member 8bp> As shown in Figure 2, the rear of the refrigerator compartment 2r is provided with a first evaporator compartment 8a in which a first evaporator (not shown) is installed. The first evaporator compartment 8a is covered by a first air passage member 8ap. The lower freezer compartment 5r has a second evaporator compartment 8b (cooler compartment) at its rear, in which a second evaporator (not shown) is installed. The second evaporator compartment 8b is covered by a second air passage member 8bp.

[0024] <Main control board 14A and sub-control board 14B> Incidentally, the main control board 14A, which is responsible for controlling the refrigerator 1 and supplying voltage, is located in the machine room R. In addition, a sub-control board 14B is located inside the first air passage member 8ap. The sub-control board 14B is connected to the main control board 14A in the machine room R by a wiring bundle 15.

[0025] <Wiring bundle 15 and wiring 16> The wiring bundle 15 is made up of multiple wires 16 bundled together. Wiring 16 is connected to a cooling fan (not shown) in the first evaporator chamber 8a and a cooling fan (not shown) in the second evaporator chamber 8b. The wiring is also connected to the interior light of the refrigerator compartment 2r. Furthermore, wiring 16 is connected to the refrigerator compartment temperature sensor 41, the freezer compartment temperature sensor 42, the vegetable compartment temperature sensor 44, etc. Voltage (current) is supplied to these cooling fans, interior light, refrigerator compartment temperature sensor 41, freezer compartment temperature sensor 42, vegetable compartment temperature sensor 44, etc. The wiring 16 (linear member) has one end, a central end, and another end. The other end of the wiring 16 is exposed to the refrigerator (high-temperature zone). The central end of the wiring 16 is embedded in the foamed insulation material 13 (insulation member inside the partition). The central end is a portion that extends in a meandering or spiral shape in the in-plane direction of the partition.

[0026] As shown in Figure 2, the wiring bundle 15 is laid from the main control board 14A in the machine room R into the insulated partition wall 29, passes through the second air passage member 8bp, is laid into the insulated partition wall 28, and is mounted up to the sub-control board 14B in the second air passage member 8bp. In detail, the wiring bundle 15 includes a first wiring bundle 15a, a second wiring bundle 15b, a third wiring bundle 15c, a fourth wiring bundle 15d, and a fifth wiring bundle 15e. The first wiring bundle 15a refers to the wiring bundle from the main control board 14A in the machine room R to the second wiring bundle 15b inside the insulated partition wall 29.

[0027] The second wiring bundle 15b refers to the wiring bundle installed within the insulated partition wall 29. The third wiring bundle 15c refers to the wiring bundle that is installed within the second air passage member 8bp. The fourth wiring bundle 15d0 refers to the wiring bundle that is installed inside the insulated partition wall 28 and inside the first air passage member 8ap. In other words, the rear part 15d0u of the fourth wiring bundle 15d0 is installed inside the first air passage member 8ap. The fifth wiring bundle 15e refers to the wiring bundle from the rear part 15d0u of the fourth wiring bundle 15d0 to the sub-control board 14B mounted inside the first air passage member 8ap.

[0028] The first wiring bundle 15a and the second wiring bundle 15b are connected by a first connection section k1, which consists of terminals, connectors, etc. The second wiring bundle 15b and the third wiring bundle 15c are connected by a second connection section k2, which consists of terminals, connectors, etc. The third wiring bundle 15c and the fourth wiring bundle 15d are connected by a third connection section k3, which consists of terminals, connectors, etc.

[0029] The fourth wiring bundle 15d and the fifth wiring bundle 15e are connected by a fourth connection section k4, which consists of terminals, connectors, etc. The fifth wiring bundle 15e is connected to the sub-control board 14B at the fifth connection section k5.

[0030] Figure 3A is a cross-sectional view taken along line II-II in Figure 2. Figure 3B is a conceptual diagram of another example of the cross-sectional view taken along line II-II in Figure 2. As shown in Figure 3A, the fourth wiring bundle 15d, which has a third connection section k3 at one end and a fourth connection section k4 at the other end, is installed (wired) within the insulated partition wall 28 in a meandering manner. Alternatively, as shown in Figure 3B, the fourth wiring bundle 15d may be installed (wired) within the insulated partition wall 28 in a spiral shape.

[0031] A portion of the fourth wiring bundle 15d is routed through the cord hole 15o and into the second air passage member 8bp. The wiring 16 of the fourth wiring bundle 15d is electrically connected to a cooling fan (not shown), a freezer temperature sensor 42, etc. After the fourth wiring bundle 15d described above is installed, the insulated partition wall 28 is filled with foamed insulation material 13. The insulated partition wall 28 may be constructed by installing horizontally expanding vacuum insulation material and filling it with foam insulation material 13 after the fourth wiring bundle 15d has been installed. Alternatively, the insulated partition wall 28 may be constructed by installing horizontally expanding vacuum insulation material after the fourth wiring bundle 15d has been installed.

[0032] Furthermore, the second wiring bundle 15b, which is installed within the insulated partition wall 29 located between the lower freezer compartment 5r and the vegetable compartment 6r as shown in Figure 2, is installed in the same manner as the fourth wiring bundle 15d within the insulated partition wall 28. Therefore, a description of the insulated partition wall 29 and the second wiring bundle 15b will be omitted. Some of the wiring in the second wiring bundle 15b is inserted through the cord hole 15o and electrically connected to the vegetable compartment temperature sensor 44 (see Figure 2), etc.

[0033] <Effects and Effects> Generally, the thermal conductivity D is related to the following equation (1). D∝S / L (1) S: Cross-sectional area L: Length In other words, the larger the cross-sectional area S, the better the thermal conductivity, and the longer the length, the lower the thermal conductivity. This means that heat transfer becomes more difficult when conducted through a long medium.

[0034] Therefore, in the first embodiment, as shown in Figure 2, the first wiring bundle 15a connected to the main control board 14A in the machine room R at room temperature is connected to the third wiring bundle 15c, which is mounted in the second air passage member 8bp in the refrigeration temperature range, via a second wiring bundle 15b, which is mounted in a long, meandering or spiral manner in the vicinity of the cord hole 15o in the heat-insulating partition wall 29, as shown in Figures 3A and 3B. Therefore, the third wiring bundle 15c, cooled in the second air passage member 8bp at the refrigeration temperature range, absorbs cold as it passes through the second wiring bundle 15b, which is meandering or spirally mounted in the insulated partition wall 29, causing its temperature to rise and reach the first wiring bundle 15a in the machine room R at room temperature. In other words, the long second wiring bundle 15b, located between the third wiring bundle 15c and the first wiring bundle 15a, experiences a gentler (slower) temperature gradient.

[0035] Therefore, when the wire travels from the second wiring bundle 15b through the first connection k1 to the first wiring bundle 15a in the machine room R at room temperature, the temperature of the first wiring bundle 15a rises considerably from the freezing temperature range and approaches a temperature higher than the dew point temperature. As a result, dew formation on the first wiring bundle 15a is suppressed. Similarly, the fifth wiring bundle 15e, connected to the sub-control board 14B in the first air passage member 8ap of the refrigeration temperature zone, is connected to the third wiring bundle 15c, which is mounted in the second air passage member 8bp of the freezing temperature zone, via the fourth wiring bundle 15d0, which is mounted in a meandering or spiral shape in the insulated partition wall 28, as shown in Figures 3A and 3B. Therefore, the third wiring bundle 15c, cooled in the second air passage member 8bp of the freezing temperature zone, absorbs cold energy as it passes through the spirally mounted fourth wiring bundle 15d0 in the insulated partition wall 28, causing its temperature to rise and reach the fifth wiring bundle 15e in the first air passage member 8ap of the refrigeration temperature zone. In this way, because the fourth wiring bundle 15d is formed to be long, the temperature gradient becomes gentle (slow).

[0036] Therefore, when the wiring from the third wiring bundle 15c reaches the fifth wiring bundle 15e in the first air passage member 8ap in the refrigeration temperature zone via the fourth connection section k4, the temperature of the fifth wiring bundle 15e rises considerably from the freezing temperature zone and approaches a temperature higher than the dew point temperature in the refrigerator compartment 2r. As a result, dew formation on the fifth wiring bundle 15e is suppressed. Furthermore, since the wiring bundle 15 is not routed inside the insulated box 1H, the insulated box 1H can be made thinner, and the internal volume of the refrigerator 1 can be increased.

[0037] Furthermore, since the wiring bundle 15 is mounted inside the first air passage member 8ap and the second air passage member 8bp, it can be configured as a sub-assembly of the first air passage member 8ap including the wiring bundle 15 and a sub-assembly of the second air passage member 8bp including the wiring bundle 15, respectively, improving ease of assembly.

[0038] <Heating of the fourth wiring bundle 15d0 by a heat source> Furthermore, as shown in Figure 3A, it is preferable to install a heater h1 (the dashed line in Figure 3A) near the fourth wiring bundle 15d0 inside the insulated partition wall 28. Then, the fourth wiring bundle 15d0 is heated by the Joule heating of the heater h1. As a result, the temperature of the wiring bundle 15 (fourth wiring bundle 15d0) becomes higher than the dew point temperature inside the refrigerator compartment 2r, and dew formation on the fifth wiring bundle 15e inside the refrigerator compartment 2r can be suppressed.

[0039] Furthermore, as shown in Figure 3B, it is preferable to install a refrigeration cycle pipe p1, which has been heated to a high temperature by the latent heat of condensation after leaving the condenser of the refrigeration cycle, near the fourth wiring bundle 15d0 inside the insulated partition wall 28. Then, the fourth wiring bundle 15d0 is heated by the heat of the refrigeration cycle pipe p1. As a result, the temperature of the wiring bundle 15 (fourth wiring bundle 15d0) rises to a temperature higher than the dew point temperature inside the refrigerator compartment 2r, thereby suppressing condensation on the fifth wiring bundle 15e inside the refrigerator compartment 2r.

[0040] <Modified form of the first embodiment> Figure 4 is a cross-sectional view of refrigerator 1A, a modified example of the first embodiment, corresponding to section II in Figure 1. In the modified refrigerator 1A, the third wiring bundle 15c described in the first embodiment is positioned behind the second air passage member 8bp to form the third wiring bundle 15c1. In addition, in the modified refrigerator 1A, the fourth wiring bundle 15d0, which was installed inside the insulating partition 28 described in the first embodiment, is designated as the fourth wiring bundle 15d1, and the rear part 15d1u of the fourth wiring bundle 15d1 is positioned outside and behind the first air passage member 8ap.

[0041] Since the components of the other modified examples are the same as those of the first embodiment, the same reference numerals are used to indicate the same components, and detailed explanations are omitted. According to the modified version, similar to the first embodiment, condensation on the wiring bundle 15 in the refrigerator compartment 2r can be suppressed. Furthermore, since the wiring bundle 15 is not routed inside the insulated box 1H, the insulated box 1H can be made thinner, and the internal volume of the refrigerator 1 can be increased.

[0042] <<Second Embodiment>> Figure 5 is a cross-sectional view of refrigerator 1B of the second embodiment, corresponding to section II in Figure 1. The refrigerator 1B of the second embodiment has foamed insulation material 13 filled inside the insulated box 1Hb, and also has a plurality of vacuum insulation materials 25a1, 25b1, and 25c1. In other words, the insulated box 1Hb is composed of an outer box 1s, an inner box 1u, foamed insulation material 13, and a plurality of vacuum insulation materials 25a1, 25b1, and 25c1 as shown in Figure 5.

[0043] In the second embodiment, a portion of the first wiring bundle 15a1, the third wiring bundle 15c1, and the fifth wiring bundle 15e1, which constitute the wiring bundle 15A, are mounted inside the foamed insulation material 13 of the insulated box 1Hb. The wiring bundle 15A consists of multiple wires 16a bundled together. Since the rest of the configuration is the same as in the first embodiment, the same reference numerals are used to indicate the same components, and detailed explanations are omitted. Similar to the first embodiment, the machine room R is equipped with a main control board 14A responsible for controlling the refrigerator 1B. In addition, a sub-control board 14B is provided in the first air passage member 8ap, which is connected to the main control board 14A in the machine room R by a wiring bundle 15A.

[0044] The wiring 16a constituting the wiring bundle 15A is connected to the cooling fan (not shown) in the first evaporator chamber 8a and the cooling fan (not shown) in the second evaporator chamber 8b. The wiring 16a is also connected to the interior light in the refrigerator compartment 2r. Furthermore, the wiring 16a is connected to the refrigerator compartment temperature sensor 41, the freezer compartment temperature sensor 42, the vegetable compartment temperature sensor 44, etc. Voltage (current) is supplied to the cooling fan, interior light, refrigerator compartment temperature sensor 41, freezer compartment temperature sensor 42, vegetable compartment temperature sensor 44, etc.

[0045] The wiring bundle 15A includes a first wiring bundle 15a1, a second wiring bundle 15b1, a third wiring bundle 15c1, a fourth wiring bundle 15d1, and a fifth wiring bundle 15e1. The fourth wiring bundle 15d1 is installed (wired) inside the foam insulation material 13 within the insulated partition wall 28 in a meandering or spiral manner, similar to Figures 3A and 3B. The second wiring bundle 15b1 is installed (wired) inside the foam insulation material 13 within the insulated partition wall 29 in a meandering or spiral manner, similar to Figures 3A and 3B.

[0046] The first wiring bundle 15a1 and the second wiring bundle 15b1 are connected by a first connection section k1a, which consists of terminals, connectors, etc. The second wiring bundle 15b1 and the third wiring bundle 15c1 are connected by a second connection section k2a, which consists of terminals, connectors, etc. The third wiring bundle 15c1 and the fourth wiring bundle 15d1 are connected by a third connection section k3a, which consists of terminals, connectors, etc.

[0047] The fourth wiring bundle 15d1 and the fifth wiring bundle 15e1 are connected by a fourth connection section k4a, which consists of terminals, connectors, etc. The fifth wiring bundle 15e1 is connected to the sub-control board 14B via the fifth connection section k5a. The first wiring bundle 15a1 is electrically connected to the main control board 14A at the main connection point k0.

[0048] As shown in Figure 5, a portion of the first wiring bundle 15a1, the third wiring bundle 15c1, and the fifth wiring bundle 15e1 are attached to the inner surface of the inner box 1u with industrial tape. At this time, the main connection part k0 and the first connection part k1a connected to the first wiring bundle 15a1 are exposed on both the inside and outside of the inner box 1u. The second connection part k2a and the third connection part k3a connected to the third wiring bundle 15c1 are also exposed on both the inside and outside of the inner box 1u. The fourth connection part k4a and the fifth connection part k5a connected to the fifth wiring bundle 15e1 are also exposed on both the inside and outside of the inner box 1u. In this state, foamed insulation material 13 is filled between the outer box 1s and the inner box 1u and foams up to form an insulated box body 1Hb.

[0049] Subsequently, the original wiring bundle 15ak0 of the first wiring bundle 15a1 is connected to the main control board 14A, and the first connection section k1a is connected to the fourth wiring bundle 15d1. Furthermore, the second connection section k2a, which is connected to the third wiring bundle 15c1, is connected to the fourth wiring bundle 15d1, and the third connection section k3a is connected to the fourth wiring bundle 15d1. Furthermore, the fourth connection section k4a, which is connected to the fifth wiring bundle 15e1, is connected to the fourth wiring bundle 15d1, and the fifth connection section k5a is connected to the sub-control board 14B in the first air passage member 8ap.

[0050] <Effects and Effects> According to the second embodiment, the fourth wiring bundle 15d1 shown in Figure 5 is mounted in a meandering or spiral manner inside the foam insulation material 13 of the insulating partition wall 28, similar to Figures 3A and 3B. As a result, the fourth wiring bundle 15d1 becomes longer, and the temperature gradient becomes gentler. Therefore, the conduction of cold energy from the third wiring bundle 15c1, which is in the freezing temperature range, to the fifth wiring bundle 15e1, which is in the refrigeration temperature range, is suppressed. As a result, the fifth wiring bundle 15e1 is prevented from cooling below the dew point temperature of the refrigerator compartment 2r. Thus, dew on the fifth wiring bundle 15e1 in the refrigerator compartment 2r is suppressed.

[0051] Similarly, the second wiring bundle 15b1 shown in Figure 5 is installed in a meandering or spiral pattern inside the foam insulation material 13 of the insulating partition wall 29, just like in Figures 3A and 3B. As a result, the temperature gradient of the second wiring bundle 15b1 becomes gentler. Therefore, the conduction of cold energy from the third wiring bundle 15c1, which is in the freezing temperature range, to the first wiring bundle 15a1, which is at room temperature is suppressed. Consequently, the cooling of the first wiring bundle 15a1 below the dew point temperature at room temperature is suppressed, and dew formation is reduced.

[0052] <<Third Embodiment>> Figure 6 is a perspective view of the refrigerator 1C of the third embodiment, viewed from the upper right front. Figure 7 is a cross-sectional view of the insulated box 1Hc of the refrigerator 1C of the third embodiment, taken along line III-III in Figure 6. The refrigerator 1C of the third embodiment is a two-door refrigerator. Refrigerator 1C consists of an insulated box 1Hc and a refrigerator door 12 and a freezer door 14 that can be opened and closed.

[0053] Refrigerator 1C has a refrigerator compartment 12r located at the top and a freezer compartment 14r located at the bottom. The refrigerator compartment 12r and the freezer compartment 14r are separated by an insulated partition wall 30 (see Figure 7). Foamed insulation material 13 and / or vacuum insulation material are provided inside the insulated partition wall 30. At the front of the refrigerator compartment 12r of refrigerator 1C, the refrigerator compartment door 12 is pivotally supported around a vertical axis by hinges 17 and a lower hinge 18.

[0054] At the front of the freezer compartment 14r of refrigerator 1C, there is a freezer door 14 that can be pulled out in the front-to-back direction (arrow α1 in Figure 6). The freezer door 14 has a freezer container (not shown) for storing frozen goods attached to its rear.

[0055] As shown in Figure 7, the refrigerator compartment 12r and the freezer compartment 14r of refrigerator 1C are separated by an insulated partition wall 30. The insulated box 1Hc of refrigerator 1C is equipped with vacuum insulation materials 35a, 35b, and 35c. The insulated box 1Hc may also be insulated by filling and foaming foamed insulation material, or foamed insulation material alone may be used. An interior light (not shown) is installed in the upper back of the refrigerator compartment 12r to brightly illuminate the interior.

[0056] At the back of the refrigerator compartment 12r, there is an air passage chamber 18a for supplying cold air to the refrigerator compartment 12r. The air passage chamber 18a is equipped with a cooling fan (not shown). The air passage chamber 18a is covered with an air passage member 18ap. An evaporator chamber 18b is located at the back of the freezer compartment 14r. The evaporator chamber 18b is equipped with an evaporator (not shown) and a cooling fan (not shown) that supply cold air to the refrigerator compartment 12r and the freezer compartment 14r. The evaporator chamber 18b is covered by an evaporator chamber member 18bp.

[0057] Refrigerator 1C has a main control board 24A in the machine room R1 and a sub-control board 24B in the evaporator room 18b. The main control board 24A and the sub-control board 24B are electrically connected by a wiring bundle 25, which consists of bundles of wires 26. The wires 26 are connected to the interior light, cooling fan, compressor in the machine room R1, etc., and supply voltage (current). The wiring bundle 25 runs from the main control board 24A, through the back and outside of the evaporator chamber 18b of the freezer compartment 14r, and within the insulated partition wall 30, as in Figures 3A and 3B, it is arranged within the insulated partition wall 30, passes through the back and outside of the air passage chamber 18a of the refrigerator compartment 12r, and is connected to the sub-control board 24B at the rear of the air passage chamber 18a. The wiring bundle 25 is provided with connection points such as terminals and connectors as needed. Thus, the wiring bundle 25 is formed by dividing it as appropriate and connecting it at the connection points.

[0058] The wiring bundles 25 inside the insulated partition wall 30 are arranged in a meandering or spiral pattern to increase their length, similar to Figures 3A and 3B. <Effects and Effects> According to the refrigerator 1C of the third embodiment, the wiring bundle 25 is installed in the freezer compartment 14r and the refrigerator compartment 12r without passing through the insulated box 1Hc, so the internal volume of the freezer compartment 14r and the refrigerator compartment 12r can be increased.

[0059] Furthermore, the wiring bundle 25 is arranged in a meandering or spiral pattern within the insulated partition wall 30, making it longer. As a result, the temperature of the wiring bundle 25 cooled in the freezer compartment 14r rises, which helps to suppress the formation of condensation on the wiring bundle 25 in the refrigerator compartment 12r.

[0060] <Modified form of the third embodiment> Figure 8 is a cross-sectional view taken along line III-III of Figure 6 of the insulated box 1HC of the refrigerator 1D, a modified example of the third embodiment. A modified version of the third embodiment is configured such that the wiring bundle 25A passes through the evaporator chamber 18b and the air passage chamber 18a. Since the other components are the same as in the third embodiment, the same reference numerals are used to indicate the same components, and detailed descriptions are omitted.

[0061] According to the refrigerator 1D, a modified example of the third embodiment, the wiring bundle 25A is arranged in a winding, meandering, or spiral manner within the insulated partition wall 30, thereby preventing the temperature of the wiring bundle 25, which is cooled in the freezer compartment 14r, from rising and suppressing the formation of condensation on the wiring bundle 25 in the refrigerator compartment 12r. Furthermore, since the wiring bundle 25 is installed inside the freezer compartment 14r and the refrigerator compartment 12r without passing through the insulated box 1Hc, the internal volume of the freezer compartment 14r and the refrigerator compartment 12r can be increased. Also, since the wiring bundle 25 is configured to pass through the evaporator compartment 18b and the air passage compartment 18a, the dead space in the evaporator compartment 18b and the dead space in the air passage compartment 18a can be effectively utilized. In addition, by dividing the wiring bundle 25 at the connection point, it can be configured as an evaporator compartment sub-assembly and an air passage compartment sub-assembly, improving ease of assembly.

[0062] <<Fourth Embodiment>> Figure 9 is a cross-sectional view of the vicinity of the boundary between the insulating partition wall 28 and the refrigerator compartment 2r, showing the wiring bundle 15 of the fourth embodiment. The fourth embodiment relates to the configuration of the point where the wiring bundle 15 enters the refrigerator compartment 2r from the insulated partition wall 28.

[0063] As shown in Figure 9, the wiring bundle 15 is installed in a bundle inside the insulated partition wall 28, bent and twisted in the same way as in Figures 3A and 3B. Then, when the wiring bundle 15 is installed from the insulated partition wall 28 into the refrigerator compartment 2r in the refrigerated temperature zone, each individual wire is separated and installed in the refrigerator compartment 2r. In other words, at least near the boundary of the refrigerator compartment 2r in the high-temperature zone or within the boundary of the refrigerator compartment 2r, the bundle state of the wiring bundle 15 is released and each of the multiple wires 16 extends in a different direction and is installed.

[0064] <Effects and Effects> According to the fourth embodiment, the wiring bundle 15 is implemented in a bundle state within the insulated partition wall 28, and the bundle state is released near the refrigerator compartment 2r. Therefore, when entering the refrigerator compartment 2r at the refrigeration temperature range, the heat transfer area of ​​each individual wire 16 becomes larger than the heat transfer area when it was a wiring bundle 15. As a result, each of the multiple wires 16 is heated up quickly, and it is suppressed that the temperature falls below the dew point temperature of the refrigerator compartment 2r. Therefore, it is possible to suppress the formation of condensation on the wires 16 in the refrigerator compartment 2r.

[0065] Figure 10 is a cross-sectional view near the boundary between the insulating partition 28 and the refrigerator compartment 2r, showing another example of the wiring bundle 15 of the fourth embodiment. In another example of the fourth embodiment, as shown in Figure 10, the bundled state of the wiring bundle 15 is released within the insulating partition 28 near the refrigerator compartment 2r. Then, each of the multiple wires 16 is installed extending in a different direction within the refrigerator compartment 2r. Therefore, in other examples of the fourth embodiment, each of the multiple wires 16 is quickly heated, preventing them from falling below the dew point temperature of the refrigerator compartment 2r. As a result, condensation on the wires 16 in the refrigerator compartment 2r can be suppressed.

[0066] <<Other Embodiments>> 1. The present invention is not limited to the embodiments and modified configurations described above, and various modified and specific forms are possible within the scope of the appended claims. [Explanation of Symbols]

[0067] 1, 1A, 1B, 1C, 1D Refrigerator 1s Outer box 1u inner box 2r Refrigerated compartment (high temperature zone) 3r Ice-making compartment (low temperature zone) 4r Upper freezer compartment (low temperature zone) 5r Lower freezer compartment (low temperature zone) 8ap First airflow component (panel) 8bp Second airflow component (panel) 13. Foamed insulation material (insulation material inside partitions, insulation material inside insulated boxes) 15, 25, 25A wiring bundle (linear bundle) 16, 26 Wiring (linear components) 18ap airflow component (panel) 18bp Evaporator chamber component (panel) 25a, 25b, 25c Vacuum insulation material 28, 29, 30 Insulated partition wall (partition section) h1 Heater (heat source) p1 Refrigeration cycle pipe (heat source)

Claims

1. An outer box and an inner box with an open front, A vacuum insulation material placed in the space between the outer box and the inner box, Low temperature region, A high-temperature region set to a higher temperature than the low-temperature region, A partition section is provided between the low-temperature region and the high-temperature region and is equipped with an insulating member inside the partition section. The device comprises a linear member having one end exposed to the low-temperature region, a central end embedded in the insulating member within the partition, and the other end exposed to the high-temperature region. A refrigerator characterized by the following features.

2. In the refrigerator according to claim 1, The partition portion is arranged in a plane direction substantially perpendicular to the direction in which the low-temperature zone and the high-temperature zone are aligned. The central portion has a part that extends in the in-plane direction of the partition. A refrigerator characterized by the following features.

3. In the refrigerator according to claim 2, The portion extending in the in-plane direction is, at least partially or entirely, meandering or spiraling. A refrigerator characterized by the following features.

4. In the refrigerator according to claim 1, The box is equipped with an internal insulating material that fills the space between the inner box and the vacuum insulating material, near the insulating member inside the partition. The aforementioned one end or the other end passes through the insulation material inside the insulated box before reaching the central side. A refrigerator characterized by the following features.

5. In the refrigerator according to claim 1, The linear member is positioned within the space of the partition through the low-temperature region or the high-temperature region. A refrigerator characterized by the following features.

6. In the refrigerator according to claim 1, The partition section has a heat source, The aforementioned central side is positioned to receive heat from the heat source. A refrigerator characterized by the following features.

7. An outer box and an inner box with an open front, A vacuum insulation material placed in the space between the outer box and the inner box, Low temperature region, A high-temperature region set to a higher temperature than the low-temperature region, A linear bundle comprising a plurality of linear members, each having one end exposed to the low-temperature region and the other end exposed to the high-temperature region, The linear bundle is released at the boundary of the high-temperature zone or near the boundary within the high-temperature zone, and each of the multiple linear members extends in a different direction. A refrigerator characterized by the following features.

8. In the refrigerator according to claim 7, The linear bundle is released from its bundled state outside the high-temperature zone. A refrigerator characterized by the following features.

9. In the refrigerator according to claim 8, The partition is located between the low-temperature region and the high-temperature region and includes an internal heat insulating member. The portion where the aforementioned bundle state has been released is embedded in the partition portion. A refrigerator characterized by the following features.

10. In the refrigerator according to claim 1 or claim 7, In the aforementioned high-temperature region, a panel facing the inner box is arranged. A portion of the linear member extends within the panel or between the panel and the inner box. A refrigerator characterized by the following features.

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