WO2019202683A1

WO2019202683A1 - Refrigeration appliance

Info

Publication number: WO2019202683A1
Application number: PCT/JP2018/015992
Authority: WO
Inventors: 荒木　正雄; 酒井　啓太
Original assignee: 三菱電機株式会社
Priority date: 2018-04-18
Filing date: 2018-04-18
Publication date: 2019-10-24

Abstract

This refrigeration appliance is provided with: a heat-insulating box body in which there are formed an opening part and a storage chamber, the heat-insulating box body having an outer box, and a vacuum heat-insulating material provided to the inner-surface side of the outer box; condensation piping through which a refrigerant discharged by a compressor flows, the condensation piping being disposed on the inner-surface side of the outer box and being configured such that the storage-chamber side of the condensation piping is covered by the vacuum heat-insulating material; and a heat-conducting sheet provided between the outer box and the vacuum heat-insulating material, the heat-conducting sheet conducting heat from the condensation piping to the opening part in the heat-insulating box body.

Description

Freezer refrigerator

The present invention relates to a refrigerator-freezer provided with a condensation pipe.

In recent years, there are some equipped with an outside air temperature sensor, an outside air humidity sensor, and the like in order to perform an operation that enhances energy saving in accordance with the environment installed in the refrigerator-freezer. The refrigerator main body constitutes a heat insulating box body in which a vacuum heat insulating material is disposed between the outer box and the inner box. In general, since the heat leakage amount of the heat insulating box is determined, the refrigeration capacity is adjusted by controlling the frequency of the compressor, the number of rotations of the internal fan, etc. according to the outside air temperature. Further, for example, in a refrigerator / freezer in which a partition plate is provided between the refrigerator main body and the door, a heater unit is mounted on the partition plate, and the energization rate to the heater unit is controlled according to the outside air temperature, the outside air humidity, etc. Condensation is suppressed. Generally, the opening of the refrigerator main body is likely to be dewed due to a temperature difference with the outside air, and electric power is required when a heater is installed to avoid this.

Therefore, a technique is known that uses the heat of the condensing pipe to raise the temperature around the opening to prevent dew condensation (see, for example, Patent Document 1). In Patent Document 1, a housing part facing the front end surface of the vacuum heat insulation panel is formed by the outer box and the inner box on the opening side of the heat insulation box, and the housing part is in a high temperature state compressed by a compressor. A dew-proof pipe through which the refrigerant flows is arranged. In addition, an auxiliary member is disposed in the housing portion so as to be in contact with the dew-proof pipe in order to enhance the heat conduction effect from the dew-proof pipe to the outer shell. When the dew-proof pipe comes into contact with the outer box on the opening side via the auxiliary member, the dew of the opening is suppressed.

By the way, in order to propagate heat from the condensation pipe to the dew condensation prevention region, a technique of installing a heat conductive sheet in the space in the housing is disclosed (for example, see Patent Document 2). In Patent Document 2, the condensation pipe is placed outside the vacuum heat insulating material, one end of the heat conductive sheet is wound around the condensation pipe, and the other end side is extended to the vicinity of the dew condensation prevention region on the outer wall, thereby providing dew. Is suppressed.

Japanese Patent No. 6005341 JP 2013-79789 A

However, in both configurations of Patent Document 1 and Patent Document 2, since the condensation pipe is disposed outside the vacuum heat insulating material, the thermal conductivity is higher than that of the vacuum heat insulating material between the condensation pipe and the inner wall surface of the cabinet. There are inferior fillers such as urethane. The thermal conductivity of the filler is generally about 5 to 10 times greater than the thermal conductivity of the vacuum heat insulating material, so there is a lot of heat intrusion from the condensing pipe into the chamber in places where no vacuum heat insulating material is provided. Become. Therefore, the heat of the condensation pipe is transmitted to the outer box on the opening side, so that the dewability is improved, but the temperature in the chamber rises due to heat penetration, and the operating rate of the compressor is increased.

This invention was made in order to solve the above problems, and it aims at providing the refrigerator-freezer which can implement | achieve energy saving, suppressing the dew condensation around an opening part.

In the refrigerator-freezer according to the present invention, an opening and a storage chamber are formed, a heat insulating box having an outer box and a vacuum heat insulating material provided on the inner surface side of the outer box, and a refrigerant discharged by the compressor flows. A condensing pipe disposed on the inner surface side of the outer box and having the storage chamber side covered with the vacuum heat insulating material; and provided between the outer box and the vacuum heat insulating material; A heat transfer sheet for transferring heat to the opening of the heat insulating box.

According to the refrigerator-freezer of the present invention, the condensing pipe is arranged in the outer box, the storage chamber side is covered with the vacuum heat insulating material, and the heat of the condensing pipe is transmitted to the opening through the heat transfer sheet. While suppressing heat intrusion, dew condensation around the opening can be suppressed by the heat of the condensation pipe. Moreover, since the thermal load of the storage room is reduced, energy saving can be realized.

It is a schematic front view which shows the external appearance of the refrigerator-freezer which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view which shows schematic structure of the refrigerator-freezer which concerns on Embodiment 1 of this invention. It is the schematic which shows the piping structure of the refrigerant circuit which concerns on Embodiment 1 of this invention. FIG. 2 is a cross-sectional view showing an AA cross section of FIG. It is a disassembled perspective view which shows the structure of the partition plate which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the state before sticking the heater unit which concerns on Embodiment 1 of this invention on a surface member. It is explanatory drawing which shows an example of the electricity supply rate of the heater unit which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows another example of the electricity supply rate of the heater unit which concerns on Embodiment 1 of this invention. It is a top perspective view which shows the structure of the upper end part periphery of the partition plate which concerns on Embodiment 1 of this invention. FIG. 2 is a secondary sectional view showing a CC cross section of FIG. 1. It is explanatory drawing which shows the sticking position of the heat exchanger sheet which concerns on Embodiment 1 of this invention. It is a figure which shows the temperature distribution for every part of the partition plate and fin part which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the cutting process of the top side panel in the manufacturing process of the refrigerator main body which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the die cutting process of the top side panel in the manufacturing process of the refrigerator main body which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the heat-transfer sheet sticking process in the manufacturing process of the refrigerator main body which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the flange formation process of the top side panel in the manufacturing process of the refrigerator main body which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the piping process in the manufacturing process of the refrigerator main body which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the vacuum heat insulating material sticking process in the manufacturing process of the refrigerator main body which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the bending process of the top | upper side panel in the manufacturing process of the refrigerator main body which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the assembly | attachment process in the manufacturing process of the refrigerator main body which concerns on Embodiment 1 of this invention. It is a fragmentary longitudinal cross-section which shows the structure of the clearance gap periphery of the upper wall part and partition plate which concern on Embodiment 2 of this invention. It is explanatory drawing which shows the sticking position of the heat exchanger sheet which concerns on Embodiment 2 of this invention. It is explanatory drawing which shows the piping process and the heat-transfer sheet sticking process in the manufacturing process of the refrigerator main body which concerns on Embodiment 2 of this invention.

Embodiment 1 FIG.
FIG. 1 is a schematic front view showing the appearance of the refrigerator-freezer according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view showing a schematic configuration of the refrigerator-freezer according to Embodiment 1 of the present invention. Based on FIG.1 and FIG.2, schematic structure of a refrigerator-freezer (refrigerator 100) is demonstrated. The arrow X direction represents the width direction of the refrigerator 100, the arrow Y direction represents the depth direction of the refrigerator 100, and the arrow Z direction represents the height direction of the refrigerator 100.

The refrigerator 100 includes a box-shaped refrigerator main body 6 having an open front surface and a plurality of doors that block the opening 6a of the refrigerator main body 6. The refrigerator main body 6 includes an outer box 10 made of a steel plate, an inner box 20 made of a synthetic resin such as ABS resin, a plate-like vacuum heat insulating material 30, and a foam heat insulating material 35. A portion 6b, a bottom wall portion 6c, a left side wall portion 6d, a right side wall portion 6e, and a rear wall portion 6f are configured. The refrigerator main body 6 has an outer box 10 and an inner box 20, and a space formed by the outer box 10 and the inner box 20 is filled with a foam heat insulating material 35 made of hard urethane foam or the like. The vacuum heat insulating material 30 is provided in each wall portion and embedded in the foam heat insulating material 35. Thus, the outer casing 10, the inner box 20, and the vacuum heat insulating material 30 are integrated by the foam heat insulating material 35 and function as a heat insulating box.

The outer box 10 has a top side panel 11 that constitutes the top, left side, and right side of the refrigerator 100, a back panel 18 that constitutes the back of the refrigerator 100, and a bottom plate 19 that constitutes the bottom of the refrigerator 100. An outer box front flange 13 (see FIG. 19) extending inward along the front surface is formed at the end of the top side panel 11 on the opening 6a side. The outer casing front flange 13 is bent and has a substantially U-shaped cross section. As shown in FIG. 19, the outer casing front flange 13 includes an upper flange portion 14 constituting the front surface of the upper wall portion 6b, a left flange portion 15 constituting the front surface of the left wall portion 6d, and a right wall portion 6e. And a right flange portion 16 constituting the front surface. Further, a lower flange 17 extending inwardly along the bottom surface is formed at the lower end of both side surfaces of the top side panel 11. An inlet (not shown) is formed in the back panel 18 and a raw material liquid for the foam heat insulating material 35 is injected through the inlet.

An inner box front flange 21 extending outward along the front surface is formed at the end of the inner box 20 on the opening 6a side. The inner box front flange 21 has a shape portion protruding to the back side. The top side panel 11 is fitted to the inner box 20 by the outer box front flange 13 coming into contact with the inner box front flange 21.

The space inside the inner box 20 is partitioned by a plurality of

partitions

7a, 7b, 7c, and a refrigerator compartment 1a, an ice making compartment 1b, a switching compartment 1c, a freezer compartment 1d, and a vegetable compartment 1e are formed from the top of the refrigerator body 6. . The switching chamber 1c is provided on the right side of the ice making chamber 1b in the width direction (arrow X direction) of the refrigerator 100. A first partition 7a is provided between the refrigerator compartment 1a, the ice making compartment 1b, and the switching chamber 1c. A second partition 7b is provided between the ice making chamber 1b and the switching chamber 1c and the freezing chamber 1d. A third partition 7c is provided between the freezer compartment 1d and the vegetable compartment 1e. Each storage room is set to a different temperature zone depending on the application, and each storage room is composed of, for example, a thermistor, and a storage room temperature sensor (not shown) for measuring the temperature of the storage room is arranged. Yes.

A door that can be opened and closed is provided in front of each storage room. The door of the refrigerating room 1a is formed of a double door-rotating rotary door, and has a left door 3 arranged on the left side of the front surface of the refrigerating room 1a and a right door 4 arranged on the right side of the front surface of the refrigerating room 1a. . The ice making room 1b, the switching room 1c, the freezing room 1d, and the vegetable room 1e are provided with drawer-type doors 2, respectively.

Although not shown, connecting hinges for connecting the refrigerator main body 6 and the door of the refrigerator compartment 1a are provided at both side ends of the outer box 10 in the width direction (arrow X direction). A connection hinge provided at the left end of the outer box 10 connects the refrigerator main body 6 and the left door 3. A connection hinge provided at the right end of the outer box 10 connects the refrigerator main body 6 and the right door 4. Each connection hinge has a hinge shaft, and the left door 3 and the right door 4 are opened from the center of the refrigerator main body 6 to both sides using each hinge shaft as a rotation axis. An inter-door gap Gd is provided at the boundary between the left door 3 and the right door 4 so that the left door 3 and the right door 4 do not come into contact with each other in the rotation trajectory in which the left door 3 and the right door 4 rotate. In addition, although not shown, an outside air temperature sensor that measures the outside air temperature and an outside air humidity sensor that measures the outside air humidity (outside air relative humidity Hout) are installed on the hinge portion 3a to which the upper connection hinge of the left door 3 is attached. Has been.

Further, the refrigerator 100 includes a partition plate 5 that closes the gap Gd between the doors and partitions the refrigerator compartment 1a from the external space. The partition plate 5 is a plate-like member extending in the height direction (arrow Z direction) along the inter-door gap Gd. The partition plate 5 is installed in the left door 3 so that the surface member 40 faces the surface of each door of the refrigerator compartment 1a on the refrigerator compartment 1a side, and covers the inter-door gap Gd from the refrigerator compartment 1a side. For example, in the width direction (arrow X direction) of the refrigerator 100, the interval between the left door 3 and the right door 4 is about 10 mm, and the width of the partition plate 5 is about 50 mm.

In addition, a heat insulating wall 36 is provided behind the freezer compartment 1d in the depth direction (arrow Y direction) of the refrigerator 100, and the cooler chamber 8 is provided between the heat insulating wall 36 and the rear wall portion 6f of the refrigerator main body 6. Is formed. Between the cooler room 8 and each storage room such as the refrigerating room 1a, a damper device (not shown) for adjusting the amount of cool air blown to the storage room is provided. Moreover, the refrigerator 100 is provided with the machine room 9 formed in the outer side of the heat insulation box body in which a part of the rear wall portion 6f is recessed inside at the lower back portion. A machine room cover 37 having a plurality of ventilation holes 37 a is installed on the back surface of the machine room 9.

FIG. 3 is a schematic diagram showing the piping configuration of the refrigerant circuit according to Embodiment 1 of the present invention. The configuration of the refrigerant circuit CR provided in the refrigerator 100 will be described with reference to FIGS. In FIG. 3, the direction in which the refrigerant flows is represented by a solid arrow.

The refrigerant circuit CR is configured by connecting a compressor 70, an air-cooled condenser 71, a condensation pipe 72, a dew prevention pipe 73, a dryer 74, a decompression device 75, a cooler 78, and the like through pipes. The The compressor 70 compresses the refrigerant and circulates it in the refrigerant circuit CR, and is installed in the machine room 9. The machine room 9 is provided with a machine room fan (not shown) for taking outside air into the machine room 9 through the ventilation holes 37a and circulating the air in the machine room 9 to cool the compressor 70 and the like. ing.

The air-cooled condenser 71, the condensation pipe 72, and the dew prevention pipe 73 have a function of condensing the refrigerant in the refrigerant circuit CR. The air-cooled condenser 71 is composed of, for example, a fin-tube heat exchanger. The air-cooled condenser 71 is disposed in the machine room 9 and radiates the heat of the refrigerant to the air blown by the machine room fan. The condensing pipe 72 is provided so as to go into the wall portion of the refrigerator main body 6 and naturally dissipates heat of the refrigerant to the outside air via the outer box 10. The condensing pipe 72 includes a left pipe part 72a provided on the left wall part 6d, a ceiling pipe part 72b provided on the upper wall part 6b, a rear pipe part 72c provided on the rear wall part 6f, and a right wall part. 6d and a right side piping part 72d. The ceiling piping part 72b is provided in the middle of the left piping part 72a. In the direction in which the refrigerant flows, the left piping part 72a, the back piping part 72c, and the right piping part 72d are connected in this order from upstream.

The dew prevention pipe 73 is stretched around the opening 6a side of each storage room provided below the refrigerator compartment 1a, and prevents the occurrence of dew condensation on the front surface. The dew prevention pipe 73 includes a first pipe part 73a provided in the first partition 7a, a second pipe part 73b provided in the second partition 7b, and a third part provided in the third partition 7c. It has the piping part 73c and the 4th piping part 73d provided in the bottom wall part 6c of the refrigerator main body.

Specifically, the dew prevention piping 73 is installed in the region below the refrigerator compartment 1a in the left flange portion 15 and the right flange portion 16 (see FIG. 19) and inside the surface of each

partition

7a, 7b, 7c. ing. The refrigerator compartment 1a has a higher temperature than the freezer compartment 1d and the like, and is less likely to be exposed to the front surface. Therefore, the outer casing front flange 13 is prevented from being exposed to the area around the refrigerator compartment 1a including the upper flange portion 14. The piping 73 is not provided. By disposing the dew prevention pipe 73 in this way, heat intrusion from the opening 6a side in the refrigerator compartment 1a can be reduced, and an increase in temperature of the refrigerator compartment 1a can be suppressed.

The dryer 74 removes moisture in the refrigerant and prevents freezing due to moisture. The decompression device 75 decompresses the refrigerant, and includes, for example, one switching valve 76 and two

capillaries

77a and 77b. The switching valve 76 is provided between the dryer 74 and the two

capillaries

77a and 77b in the refrigerant circuit CR, and changes the flow rate of the refrigerant in each of the

capillaries

77a and 77b.

The cooler 78 is disposed in the cooler chamber 8. In the cooler chamber 8, an internal fan 38 that circulates the air in the refrigerator 100 is disposed. The cooler 78 causes the refrigerant to absorb the heat of the air blown by the internal fan 38.

Further, the refrigerator 100 includes a control unit 99 (see FIG. 2) that controls the operation of the entire refrigerator 100. The control unit 99 is composed of a microcomputer or the like and is built in the refrigerator main body 6. The measurement values of the storage chamber temperature sensors, the outside air temperature sensor, and the outside air humidity sensor are input to the control unit 99. The control unit 99 controls operations of the compressor 70, the switching valve 76, each damper device, the internal fan 38, the machine room fan, and the like.

In the refrigerant circuit CR, the refrigerant discharged from the compressor 70 sequentially passes through the air-cooled condenser 71, the condensation pipe 72, and the dew prevention pipe 73, and is condensed while releasing heat. The refrigerant that has flowed out of the dew prevention pipe 73 is removed from the refrigerant by the dryer 74 and flows into the decompression device 75. The refrigerant flowing into the decompression device 75 is decompressed, expands, and flows into the cooler 78. In the cooler 78, the refrigerant absorbs heat from the air circulating in the refrigerator 100 by the internal fan 38 and evaporates. At this time, the air around the cooler 78 is cooled. The refrigerant evaporated in the cooler 78 flows into the compressor 70 through the suction pipe 79 and is compressed again. While the compressor 70 is in operation, the above cycle is repeated.

On the other hand, the cold air generated by the air in the refrigerator 100 exchanging heat with the refrigerant flowing in the cooler chamber 8 is blown to the respective storage chambers by the internal fans 38 via the respective damper devices. Cooling. The temperature of each storage room is measured by a storage room temperature sensor installed in each storage room, and the control unit 99 controls the frequency of the compressor 70 and each damper so that the measured temperature becomes a preset temperature. By controlling the opening degree of the apparatus, it is kept at an appropriate temperature. The cold air that has cooled each storage chamber is returned to the cooler chamber 8 by the internal fan 38 and cooled again by the cooler 78.

FIG. 4 is a cross-sectional view showing the AA cross section of FIG. FIG. 5 is an exploded perspective view showing the structure of the partition plate according to Embodiment 1 of the present invention. FIG. 6 is a cross-sectional view showing a state before the heater unit according to Embodiment 1 of the present invention is attached to a surface member. Based on FIG.4, FIG.5 and FIG.6, the structure around the partition plate 5 and the partition plate 5 is demonstrated.

The partition plate 5 includes a surface member 40 formed of sheet metal or the like, a heater unit 45 disposed in the surface member 40, a heater cover 50 that covers the heater unit 45 disposed in the surface member 40, and the like.

Gaskets

94 and 95 having magnets 24 are respectively provided on the

inner plates

3b and 4b of the doors of the refrigerator compartment 1a. One gasket 94 brings the left door 3 and the surface member 40 of the partition plate 5 into close contact with each other. The other gasket 95 brings the right door 4 and the surface member 40 into close contact with each other.

The surface member 40 transmits heat from the heater unit 45 to the two

gaskets

94 and 95. The heater unit 45 includes, for example, a planar aluminum foil heater or the like, and heats the surface member 40 by energization. The heater cover 50 is made of resin or the like.

The heater unit 45 includes a cord-like heater 46 that generates heat when energized, a heat shield 48 made of aluminum foil or the like, and a double-sided tape 47 that attaches the heater 46 and the heat shield 48 to the surface member 40. The double-sided tape 47, the heater 46, and the heat shield 48 are arranged in this order from the surface member 40 toward the heater cover 50. The heater 46 is arranged meandering so as to form a plurality of turns. The double-sided tape 47 sticks and holds the heater 46 and the heat shield 48 inside the surface member 40. The heat shield part 48 is provided so as to cover the heater 46 disposed inside the surface member 40, and reflects the heat of the heater 46 to the surface member 40 side and suppresses heat transfer to the refrigerator compartment 1a side. To do.

The partition plate 5 further includes a heat insulating member 55 disposed on the refrigerator compartment 1 a side of the heater cover 50 and a back cover 60. The heat insulating member 55 is made of polystyrene foam or the like, and suppresses the heat of the heater unit 45 from leaking from the heater cover 50 into the refrigerator compartment 1a. The back cover 60 is formed of resin or the like and is attached to the heater cover 50 to hold the heat insulating member 55.

An upper hinge 62 and an upper cover 63 are attached to the upper end portion of the back cover 60 by screws 64, and a spring 65, a lower hinge 66, and a lower portion are attached to the lower end portion of the back cover 60. A side cover 67 is attached by screws 64. A spring stopper 68 serving as a fulcrum for the operation of the spring 65 is attached to the rear cover 60 with a screw 69 at the lower end of the rear cover 60. Bearing portions 60 a for attaching the upper hinge 62 and the lower hinge 66 are formed at both ends of the back cover 60.

The upper hinge 62 and the lower hinge 66 connect the left door 3 and the partition plate 5 so that the partition plate 5 rotates in conjunction with the opening / closing operation of the left door 3. The upper hinge 62 and the lower hinge 66 have shaft portions 62 a and 66 a that serve as rotation shafts of the partition plate 5, and the shaft portions 62 a and 66 a are inserted into the bearing portions 60 a of the back cover 60. The spring 65 biases the partition plate 5 toward the left door 3 side.

The upper cover 63 and the lower cover 67 cover the end in the height direction (arrow Z direction) of the partition plate 5, and are attached to the back cover 60, so that the upper hinge 62 and the lower hinge 66 are attached. Retain each. A cover groove 63 a is formed in the upper part of the upper cover 63.

A heater unit 45 is affixed to the surface member 40 and fitted with the heater cover 50 and the tab 41, a heat insulating member 55 is placed on the heater cover 50, and the back cover 60 to which the upper hinge 62 and the like are attached is fitted with the heater cover 50. The partition plate 5 is formed by fastening with the let screws 64. The partition plate 5 formed in this way is rotatably attached to the inner plate 3b of the left door 3 via an upper hinge 62 and a lower hinge 66.

A fitting groove 96 is formed in each of the inner plate 3 b of the left door 3 and the inner plate 4 b of the right door 4. One of the two

gaskets

94, 95 described above is fitted in the fitting groove 96 of the inner plate 3 b of the left door 3, and the other gasket 95 is fitted in the fitting groove of the inner plate 4 b of the right door 4. 96. When the left door 3 and the right door 4 are closed, the door provided with the

gaskets

94 and 95 and the surface member 40 are brought into close contact by the magnetic force of the magnet 24.

The left door 3 and the right door 4 have standing

walls

3c and 4c projecting toward the refrigerator compartment 1a in the depth direction (arrow Y direction) so as to sandwich the partition plate 5 in the width direction (arrow X direction). A packing 97 is installed between the standing wall 3 c of the left door 3 and the partition plate 5. On the other hand, the gasket 95 provided on the right door 4 has a rear extension 95a extending between the standing wall 4c of the right door 4 and the right side surface of the partition plate 5, and the partition plate is formed by the rear extension 95a. Heat leakage around 5 is suppressed.

The above-described control unit 99 (see FIG. 2) also calculates the energization rate Pr of the heater unit 45 based on the measured temperature of the refrigerator compartment 1a, the outside air temperature, and the outside air relative humidity Hout, and issues an energization instruction. . The energization rate Pr may be calculated by a known method.

FIG. 7 is an explanatory diagram showing an example of the energization rate of the heater unit according to Embodiment 1 of the present invention. FIG. 8 is an explanatory diagram showing another example of the energization rate of the heater unit according to Embodiment 1 of the present invention. Energization to the heater unit 45 is controlled so that the surface member 40 of the partition plate 5 and the

gaskets

94 and 95 have a power supply rate Pr that does not cause dew. Here, the energization rate Pr is a rate of energization time to the heater 46. For example, when energizing for 5 seconds out of 10 seconds, the energization rate Pr is expressed as 50%.

The energization rate Pr is calculated, for example, by giving the measured outside air relative humidity Hout to a plurality of calculation formulas set with the outside air temperature as a parameter. Further, the reference energization rate varies depending on the structure such as the thickness of the partition plate 5 and the thermal conductivity of the material, the rated wattage of the heater 46, the set temperature of the refrigerator compartment 1a, and the like.

In FIG. 7, the calculation formula is set for each of three stages, that is, when the outside air temperature is 20 ° C. or less, when it is higher than 20 ° C. and 30 ° C. or less, and when it is higher than 30 ° C. and 40 ° C. or less. The energization rate Pr increases linearly as the outside air relative humidity Hout increases. FIG. 7 illustrates the energization rates Pr1, Pr2, and Pr3 in three temperature zones. On the other hand, in the calculation formula of FIG. 8, three levels are set for each of the case where the outside air temperature is 20 ° C. or less, the case where it is higher than 20 ° C. and 30 ° C. or less, and the case where it is higher than 30 ° C. and 40 ° C. or less. The energization rate Pr increases logarithmically as the outside air relative humidity Hout increases. FIG. 8 illustrates the energization rates Pr4, Pr5, and Pr6 in three temperature zones.

The calculation formula is stored in advance in the control unit 99 as a program. For example, in FIG. 7, each calculation formula is determined so that the coefficient C1 and the coefficient C2 are set for each temperature zone of the outside air temperature, where the reference energization rate = C1 × Hout + C2. Further, in FIG. 8, each calculation formula is determined so that the coefficient C3 and the coefficient C4 are set for each temperature zone of the outside air temperature as the reference energization rate = C3 × ln (Hout) + C4. Each coefficient may be determined in advance through experiments or the like. Note that the temperature range of the outside air temperature for setting the calculation formula is not limited to the above three stages, and may be set in increments of 5 ° C., for example.

FIG. 9 is a top perspective view showing the configuration around the upper end of the partition plate according to Embodiment 1 of the present invention. FIG. 9 illustrates a state in which the left door 3 is closed and the right door 4 is opened. FIG. 10 is a secondary cross-sectional view showing the CC cross section of FIG. The operation of the partition plate 5 and the structure around the partition plate 5 will be described in detail with reference to FIGS. Hereinafter, the lower surface of the upper wall portion 6b is the ceiling 81 of the refrigerator compartment 1a, and the upper surface of the first partition 7a is the floor surface 82 of the refrigerator compartment 1a.

In the upper wall portion 6b of the refrigerator compartment 1a, a guide portion 83 for guiding the rotation of the partition plate 5 is provided at a position relative to the upper end portion of the partition plate 5. The guide part 83 has a base part 83b attached to the ceiling 81 and a protrusion 83a extending downward from the base part 83b. When the left door 3 is closed, the projection 83 a of the guide portion 83 is accommodated in the cover groove portion 63 a formed in the upper cover 63.

When the left door 3 is opened, the partition plate 5 has the projection 83a of the guide portion 83 abutted against the edge of the cover groove portion 63a formed on the upper cover 63, and the partition plate 5 rotates around the shaft portions 62a and 66a as the rotation shaft. Move. At this time, since the right side portion of the partition plate 5 is turned backward by the biasing force of the spring 65, the partition plate 5 can be prevented from contacting the right door 4. On the other hand, when the left door 3 is closed, the right side portion of the partition plate 5 that has turned back is guided to the guide portion 83 and is rotated so as to exit from the left door 3 to the right side. When both the left door 3 and the right door 4 are closed, the gap Gd between the doors is closed by the partition plate 5 and the two

gaskets

94 and 95, and the intrusion of outside air from the outside into the refrigerator compartment 1a is suppressed.

The partition plate 5 is formed shorter in the height direction (arrow Z direction) than the opening width of the refrigerator compartment 1a, and the upper end of the partition plate 5 and the base portion 83b of the guide portion 83 provided on the ceiling 81 are provided. A gap Gt is formed between them. Further, a gap Gb smaller than the upper gap Gt is formed between the lower end of the partition plate 5 and the floor surface 82. Here, the opening width of the refrigerator compartment 1a is the distance between the ceiling 81 and the floor surface 82 of the refrigerator compartment 1a.

Each of the

gaskets

94 and 95 described above has a fin portion formed so as to extend to the upper portion and the lower portion, and the gap Gt and the gap Gb are closed by the fin portion. Specifically, the gasket 94 provided in the left door 3 has an upper fin portion 94t formed in the upper portion and a lower fin portion (not shown) formed in the lower portion. Similarly, the gasket 95 provided in the right door 4 has an upper fin portion 95t formed in the upper portion and a lower fin portion (not shown) formed in the lower portion.

Each of the

upper fin portions

94t and 95t covers the gap Gt, extends upward from the ceiling 81 of the refrigerator compartment 1a, overlaps with a part of the upper flange portion 14, and a part of the surface member 40 of the partition plate 5. Overlapping lengths are formed. The

upper fin portions

94t and 95t and the upper flange portion 14 are in contact with each other in an overlapping region, and the

upper fin portions

94t and 95t and the surface member 40 are in contact with each other in an overlapping region. Hereinafter, the length of contact between the

upper fin portions

94t and 95t and the upper flange portion 14 is referred to as a first contact length D1, and the length of contact between the

upper fin portions

94t and 95t and the surface member 40 is second. It is referred to as contact length D2. Here, the first contact length D1 and the second contact length D2 are each set to about 10 mm.

In the width direction (arrow X direction), the upper fin portion 94t extends from the left door 3 to the right so as to cover the door gap Gd, and the upper fin portion 95t extends from the right door 4 so as to cover the door gap Gd. It extends to the left side. That is, in the gap Gt formed above the partition plate 5, the two

upper fin portions

94t and 95t overlap to close the inter-door gap Gd.

FIG. 11 is an explanatory diagram showing the attachment position of the heat transfer sheet according to Embodiment 1 of the present invention. FIG. 11 illustrates the inner surface side of the state before the bending process of the top side panel 11. Based on FIG.10 and FIG.11, the structure of the upper wall part 6b is demonstrated in detail.

The upper flange portion 14 is provided at the front end portion of the top surface portion 12 disposed on the top surface of the top surface panel 11. The upper flange portion 14 is connected to the top surface portion 12, and extends downward so as to face the left door 3 and the right door 4, and a second surface portion 14b positioned so as to overlap the rear of the first surface portion 14a. And a bent portion 14c connecting the first surface portion 14a and the second surface portion 14b. The inner box front flange 21 formed in the inner box 20 includes a front part 21a provided to face the second surface part 14b of the upper flange part 14, and a concave part 21b recessed from the front part 21a so as to swell rearward. Have The recess 21b is provided to maintain the shape of the inner box front flange 21.

Further, the refrigerator 100 includes an aluminum tape 85 that fixes the condensing pipe 72 to the inner surface side of the top side panel 11 and a heat transfer sheet 86 that transfers heat of the condensing pipe 72 to the opening 6a. Hereinafter, the case where the heat transfer sheet 86 is provided on the upper wall portion 6b and the dew on the opening 6a side of the upper wall portion 6b is prevented will be described as an example.

The heat transfer sheet 86 is provided between the top surface portion 12 of the top side panel 11 and the vacuum heat insulating material 30. Specifically, the heat transfer sheet 86 is affixed to the inner surface side of the top surface portion 12. The heat transfer sheet 86 has, for example, a long shape extending from the ceiling piping part 72 b to the opening 6 a, and one end of the heat transfer sheet 86 extends forward from the vacuum heat insulating material 30 to the inner surface of the U-shaped upper flange part 14. Are arranged along. The ceiling piping part 72b is fixed to the inner surface side of the top surface part 12 to which the heat transfer sheet 86 is attached. Specifically, the ceiling piping part 72b is wound so as to cross the lower part of the heat transfer sheet 86, and the aluminum tape 85 is attached so as to cover the overlapping part of the heat transfer sheet 86 and the ceiling piping part 72b from below. Yes.

Here, as the heat transfer sheet 86, for example, a graphite sheet is used. The graphite sheet is graphite (graphite) made into a thin sheet and has a very large thermal conductivity in the plane direction, but has a very small thermal conductivity in the thickness direction. There are various types of graphite sheets, but in general, the thermal conductivity in the surface direction is about 2 to 5 times larger than other metals, and the heat hit by the spot can be diffused over a wide range, so exhaust heat treatment is performed. It is very useful above. When the heat transfer sheet 86 is composed of a graphite sheet, the thickness of the graphite sheet is about 40 μm with good pasting workability in consideration of bending when forming the outer casing front flange 13. It is good to be done. As for the thermal conductivity in the surface direction, a thermal conductivity of about 1000 W / (mK), which is larger than other metals, is used.

The heat transfer sheet 86 is provided at a position 90 of the partition plate 5 in the width direction (arrow X direction) of the refrigerator 100. The heat transfer sheet 86 has a sheet width Ws of about 50 mm, and the sheet length Ls is set so as to overlap with the pipe part closest to the opening 6a of the ceiling pipe part 72b. Here, the sheet width Ws may be approximately the same as the width (50 mm) of the partition plate 5. Since the sheet width Ws of the heat transfer sheet 86 is sufficiently smaller than the width of the refrigerator 100, the heat of the ceiling pipe portion 72 b is transmitted to the portion of the upper flange portion 14 that faces the partition plate 5, and the partition plate 5 is provided. It is possible to suppress heat intrusion into the refrigerator 100 at a portion where there is not. By the way, when arrange | positioning a heat-transfer sheet | seat to about the half of the height direction of the side surface of a refrigerator like the past, the operation | work which winds a sheet | seat around thin piping and adheres becomes difficult. Therefore, it is necessary to introduce a robot or the like in the heat transfer sheet pasting process. On the other hand, in Embodiment 1, since the area | region which provides the heat exchanger sheet 86 can be made small, the expense and manufacturing space for manufacturing the refrigerator main body 6 can be reduced.

The groove 30a is formed in the surface which opposes the top | upper surface part 12 in the vacuum heat insulating material 30, and the ceiling piping part 72b is accommodated in the groove | channel 30a. In other words, the heat-dissipating ceiling piping part 72 b is arranged inside the top surface part 12 and the refrigerator compartment 1 a side is covered with the vacuum heat insulating material 30. According to such a structure, compared with the case where the condensing pipe 72 is directly provided in the upper flange portion 14, heat intrusion into the refrigerating chamber 1a is suppressed by the vacuum heat insulating material 30, and the heat of the ceiling pipe portion 72b is transferred. The sheet 86 can be efficiently provided. Therefore, it is possible to increase the temperature of the upper flange portion 14 at the position of the partition plate 5 through the heat transfer sheet 86 while suppressing the temperature increase in the refrigerator compartment 1a, thereby suppressing dew condensation. In addition, although the case where the groove | channel 30a was formed in the vacuum heat insulating material 30 was demonstrated, the spacer which has a height comparable as the outer diameter of the ceiling piping part 72b is provided, and the top surface part 12 and the vacuum heat insulating material 30 are provided with a spacer. You may make it form a space | gap between these.

FIG. 12 is a diagram showing a temperature distribution for each part of the partition plate and the fin portion according to Embodiment 1 of the present invention. The horizontal axis represents the position in the height direction (arrow Z direction). From the left side, the positions of the

upper fin portions

94t and 95t, the positions of the respective parts obtained by dividing the partition plate 5 in the height direction, and the lower fin portions Represents the position of each. The vertical axis represents the temperature [° C.] of each part. FIG. 12 shows that the set temperature of the refrigerator compartment 1a is 3 ° C., the heater rating is 11.1 [W], and the energization rate is 54% under an environmental condition where the outside air temperature is 30 ° C. and the outside air relative humidity Hout is 75%. It is a measurement result in the case of. The broken line represents the temperature distribution 87 of the conventional example, and the solid line represents the temperature distribution 88 obtained by the refrigerator 100 of the first embodiment.

In the temperature distribution 87 of the conventional example, the temperature of the central portion of the partition plate 5 is 35 ° C., the temperatures of the

upper fin portions

94t and 95t are 26.0 ° C., and the temperature of the lower fin portion is about 28 ° C. ing. Each temperature of the seven portions is equal to or higher than the dew point temperature Td (25.1 ° C.), and the temperature difference between the

upper fin portions

94t and 95t and the central portion of the partition plate 5 is 9 ° C. The temperature of the fin portion is lower than that of the partition plate 5 on which the heater unit 45 is mounted. In particular, the

upper fin portions

94t and 95t having a large area exposed to the refrigerator compartment 1a have the lowest temperature. In this case, the energization rate of the heater unit 45 is set so that the

upper fin portions

94t and 95t are not dewed.

In the temperature distribution 88 of the first embodiment, each temperature of the seven parts is equal to or higher than the dew point temperature Td (25.1 ° C.), and the temperature of each part of the partition plate 5 and the temperature of the lower fin portion are the same as those in the conventional example. The temperature is almost the same as the case. Further, the temperatures of the

upper fin portions

94t and 95t are the lowest at 7 sites, which is 26.5 ° C. In the temperature distribution 88, the temperature difference between the

upper fin portions

94t and 95t and the central portion of the partition plate 5 is 8.5 ° C, and the temperature of the

upper fin portions

94t and 95t increases by 0.5 ° C compared to the conventional example. ing. In this case, the temperature difference between the partition plate 5 and the fin portion can be made smaller than before, and the power supply rate to the heater unit 45 can be reduced.

As described above, in the refrigerator 100, the upper flange portion 14 is not provided with the condensation pipe 72, the dew prevention pipe 73, and the like, but the

upper fin portions

94t and 95t of the

gaskets

94 and 95 are the surface members of the partition plate 5. 40 and in contact with the upper flange portion 14. For this reason, the heat of the heater unit 45 is transmitted to the

upper fin portions

94t and 95t through the surface member 40, and the heat of the condensation pipe 72 is transmitted through the upper flange portion 14 and the heat transfer sheet 86. The temperature drop is suppressed.

As described above, the refrigerator 100 transmits heat from the condensing pipe 72 and heat from the heater unit 45 to the

gaskets

94 and 95 to increase the temperature of the fin portion, thereby generating dew around the opening 6a. Can be suppressed. Further, the energization rate of the heater unit 45 can be reduced by increasing the temperature of the fin section, and the heat intrusion from the condensing pipe 72 to the refrigerating chamber 1a is suppressed by the vacuum heat insulating material 30, thereby operating the compressor 70. The rate can be reduced and energy saving can be realized. Furthermore, while it is necessary to newly provide the heat transfer sheet 86, the dew prevention piping provided around the refrigerator compartment 1a can be reduced, so that an increase in the manufacturing cost of the refrigerator 100 can be avoided.

FIG. 13 is an explanatory diagram showing a cutting process of the top side panel in the manufacturing process of the refrigerator main body according to Embodiment 1 of the present invention. FIG. 14 is an explanatory diagram showing a die-cutting process of the top side panel in the manufacturing process of the refrigerator main body according to Embodiment 1 of the present invention. FIG. 15 is an explanatory diagram showing a heat transfer sheet attaching step in the manufacturing process of the refrigerator body according to Embodiment 1 of the present invention. FIG. 16 is an explanatory diagram showing a flange forming step of the top side panel in the manufacturing process of the refrigerator main body according to Embodiment 1 of the present invention. FIG. 17 is an explanatory diagram illustrating a piping process in the manufacturing process of the refrigerator main body according to Embodiment 1 of the present invention. FIG. 18 is an explanatory diagram showing a vacuum heat insulating material attaching step in the manufacturing process of the refrigerator body according to Embodiment 1 of the present invention. FIG. 19 is an explanatory diagram showing a folding process of the top side panel in the manufacturing process of the refrigerator body according to Embodiment 1 of the present invention. FIG. 20 is an explanatory diagram illustrating an assembly process in the manufacturing process of the refrigerator main body according to Embodiment 1 of the present invention.

The manufacturing process of the refrigerator body 6 will be described with reference to FIGS. First, in the cutting process, the roll-shaped outer box material 200 is fed by a sheet feeder and cut into a preset length to form the rectangular outer box plate material 111 that becomes the material of the top side panel 11 described above. Is done. Next, in the die cutting process, the outer box plate material 111 is die cut (FIG. 14). At this time, a pretreatment for forming the outer box front flange 13 on the outer box plate material 111 is performed. Specifically, two V-shaped first notches 91 are provided at the center of the front edge of the outer box plate material 111, and second notches 92 in which the left end and the right end of the front edge are notched are provided. Provided. Further, the outer box plate member 111 is provided with a plurality of screw holes 93 through which a plurality of fixing screws for fixing the separately formed inner box 20 and the like are passed.

FIG. 14 and FIG. 15 show the surface which becomes the inner surface side of the top side panel 11. After the die cutting step, in the heat transfer sheet sticking step, the heat transfer sheet 86 is attached to a predetermined position on the front edge of the outer box plate material 111 using a jig. At this time, the heat transfer sheet 86 is affixed to the position where the partition plate 5 between the two first cutouts 91 is arranged in the width direction (arrow X direction). Further, the heat transfer sheet 86 is attached so that one end thereof coincides with the front end portion 111 a of the outer box plate material 111 in the depth direction (arrow Y direction).

After the heat transfer sheet sticking step, in the flange forming step, the front and left and right end faces of the outer box plate material 111 are bent to form the outer box front flange 13 and the lower flange 17 (FIG. 16). After the flange forming step, in the piping step, the condensing piping 72 including the left piping portion 72a, the ceiling piping portion 72b, and the right piping portion 72d is arranged at a preset position using a jig, and the aluminum tape 85 is used at a plurality of locations. It is fixed (FIG. 17). In the vacuum heat insulating material attaching step, three vacuum heat insulating materials 30 are attached to the outer box plate material 111 to which the condensation pipe 72 is fixed in the piping step (FIG. 18). Each vacuum heat insulating material 30 is arrange | positioned so that the left side piping part 72a, the ceiling piping part 72b, and the right side piping part 72d may each be covered. At this time, the left piping part 72a, the ceiling piping part 72b, and the right piping part 72d are accommodated in the grooves 30a formed in each vacuum heat insulating material 30, respectively.

After the vacuum heat insulating material attaching step, in the bending step, the outer box plate material 111 is bent in a U shape to form the top side panel 11 (FIG. 19). After the top side panel 11 is formed, the inner box 20 is assembled to the top side panel 11 to which the vacuum heat insulating material 30 has been affixed in the assembling step (FIG. 20). At this time, the top side panel 11 and the inner box 20 are fitted by the outer box front flange 13 coming into contact with the inner box front flange 21 (see FIG. 2). Thereafter, the back panel 18 and the bottom plate 19 are further attached to the top side panel 11, and the space between the outer box 10 and the inner box 20 is filled with hard urethane foam, and the manufacturing process of the refrigerator body 6 is completed.

Thus, in the manufacturing method of the refrigerator main body 6 of Embodiment 1, the heat transfer sheet sticking step is performed after the die-cutting step of the top side panel 11 and before the flange forming step and the piping step. Therefore, as shown in FIG. 10, the heat transfer sheet 86 is interposed between the top side panel 11 and the ceiling piping portion 72 b and directly contacts the ceiling piping portion 72 b, and one end is an inner surface of the upper flange portion 14. Arranged along the side. For this reason, heat can be transported from the ceiling pipe portion 72b to the upper flange portion 14 by the heat transfer sheet 86, and the temperature of the

upper fin portions

94t and 95t that are in contact with the first surface portion 14a of the upper flange portion 14 is lowered. Can be suppressed.

As described above, in the refrigerator-freezer (refrigerator 100) of the first embodiment, the condensation pipe 72 is arranged in the outer box 10 and the storage room (refrigeration room 1a) side is covered with the vacuum heat insulating material 30, and the heat transfer sheet 86 is disposed. The heat of the condensing pipe 72 is transmitted to the opening 6a. Thereby, while suppressing the heat | fever of the condensation piping 72 invading in a store | warehouse | chamber, the temperature around the opening part 6a can be raised and dew condensation can be suppressed. Moreover, since the heat load of the refrigerator compartment 1a is reduced by suppressing the heat | fever penetration | invasion into a store | warehouse | chamber, energy saving is realizable.

Also, the control unit 99 controls the compressor 70 so that the temperature measured by the storage room temperature sensor becomes a preset temperature. Thereby, when the heat | fever penetration | invasion into a store | warehouse | chamber is suppressed and the temperature rise of the refrigerator compartment 1a is suppressed, the increase in the operating rate of the compressor 70 will be suppressed in connection with it.

The refrigerator 100 includes a partition plate 5 including a heater unit 45, and includes a temperature measured by an outside air temperature sensor, an outside air relative humidity Hout measured by an outside air humidity sensor, and a temperature measured by a storage room temperature sensor. The energization of the heater unit 45 is controlled based on Thereby, if the temperature of the opening 6a vicinity rises with the heat of the condensation pipe 72, the temperature difference for every part of the partition plate 5 and the fin part can be reduced. As a result, the energization rate Pr of the heater unit 45 that prevents dew can be minimized, and energy saving can be realized.

Further, the fin portions (for example, the

upper fin portions

94t and 95t) of the

gaskets

94 and 95 cover the gap between the lower surface of the upper wall portion 6b (the ceiling 81 of the refrigerator compartment 1a) and the upper end portion of the partition plate 5 at the opening 6a. And contacts the end face of the upper wall 6 b on the opening 6 a side and the partition plate 5. As a result, the heat transferred from the condensing pipe 72 to the opening 6a is further transferred to the

upper fins

94t and 95t, and the temperature of the

upper fins

94t and 95t, which are exposed to the refrigerating chamber 1a and tend to be low, is increased. Dew can be suppressed.

Embodiment 2. FIG.
FIG. 21 is a partial vertical cross-sectional view showing the configuration around the gap between the upper wall portion and the partition plate according to Embodiment 2 of the present invention. FIG. 22 is an explanatory diagram showing the attachment position of the heat transfer sheet according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the ceiling piping portion 72b is directly provided on the inner surface side of the top surface portion 12 of the top surface panel 11. In the second embodiment, items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.

The inner surface of the top surface portion 12 is fixed with an aluminum tape 185 so that the ceiling piping portion 72b is in contact therewith. The heat transfer sheet 186 is affixed to the inner surface side of the top surface portion 12 to which the ceiling piping portion 72b is fixed. One end of the heat transfer sheet 186 extends forward from the vacuum heat insulating material 30, and is disposed between the second surface portion 14 b of the upper flange portion 14 and the front surface portion 21 a of the inner box front flange 21.

FIG. 23 is an explanatory diagram showing a piping process and a heat transfer sheet pasting process in the manufacturing process of the refrigerator body according to the second embodiment of the present invention. In the second embodiment, after the piping process of FIG. 17 is performed, the heat transfer sheet sticking process in which the condensation pipe 72 is fixed to the outer box plate material 111 is performed before the process proceeds to the vacuum heat insulating material sticking process of FIG. (FIG. 23). By setting it as such a manufacturing process, the heat-transfer sheet | seat sticking process can be performed in the same work space as the piping process of FIG. 17, compared with the manufacturing process of Embodiment 1, the die cutting process and figure of FIG. It is not necessary to provide the work space of FIG. 15 between the 16 flange forming steps.

In the refrigerator main body 6 of the second embodiment, the heat transfer sheet 186 is not in direct contact with the first surface portion 14a that is in contact with the

upper fin portions

94t and 95t, but the top surface portion 12 and the second surface portion 14b. Because of the contact, the temperature rises at the upper flange portion 14. Thereby, the temperature of the

upper fin parts

94t and 95t provided overlapping with the upper flange part 14 rises, and dew is suppressed.

The embodiment of the present invention is not limited to the above embodiment, and various changes can be made. For example, the condensation pipe 72 may be affixed to the top side panel 11 by double-sided tape or glueing without using the

aluminum tapes

85 and 185. Further, the

heat transfer sheets

86 and 186 are not limited to graphite sheets, and those having excellent thermal diffusivity in the surface direction may be employed.

Moreover, although the case where the recessed part 21b was formed in the inner case front flange 21 was demonstrated, when intensity | strength is ensured more than fixed by increasing the thickness of the plate member of the inner case 20, formation of the recessed part 21b is carried out. Is unnecessary. Further, the configuration of the refrigerant circuit CR is not limited to the above.

Moreover, although the ceiling piping part 72b and the upper side flange 12a were connected by the heat-transfer sheet | seats 86 and 186, and the case where the dew condensation in the

upper fin parts

94t and 95t was suppressed was demonstrated, the position which provides the heat-transfer sheet | seats 86 and 186 is shown. It is not particularly limited to this. The

heat transfer sheets

86 and 186 may be provided so as to connect the right pipe part 72d and the right flange part 16, or may be provided so as to connect the left pipe part 72a and the left flange part 15. . Alternatively, the

heat transfer sheets

86 and 186 may be provided at a plurality of locations. In any case, it is possible to efficiently transmit the heat of the condensing pipe 72 to the outer casing front flange 13 while suppressing heat intrusion into the inside of the box, thereby suppressing dew condensation.

1a cold storage room, 1b ice making room, 1c switching room, 1d freezing room, 1e vegetable room, 2 doors, 3 left door, 3a hinge part, 3b inner plate, 3c standing wall, 4 right door, 4b inner plate, 4c standing wall 5, partition plate, 6 refrigerator body, 6a opening, 6b upper wall, 6c bottom wall, 6d left wall, 6e right wall, 6f rear wall, 7a, 7b, 7c partition, 8 cooler room, 9 Machine room, 10 outer box, 11 top side panel, 12 top surface part, 12a upper flange, 13 outer box front flange, 14 upper flange part, 14a first surface part, 14b second surface part, 14c bent part, 15 left flange part , 16 Right flange part, 17 Lower flange, 18 Rear panel, 19 Bottom plate, 20 Inner box, 21 Inner box front flange, 21a Front part, 21b Recessed part, 4 magnet, 30 vacuum insulation, 30a groove, 35 foam insulation, 36 insulation wall, 37 machine room cover, 37a ventilation hole, 38 internal fan, 40 surface member, 41 claw, 45 heater unit, 46 heater, 47 double sides Tape, 48 Heat shield, 50 Heater cover, 55 Heat insulation member, 60 Back cover, 60a Bearing, 62 Upper hinge, 62a Shaft, 63 Upper cover, 63a Cover groove, 64 Screw, 65 Spring, 66 Lower hinge, 66a shaft, 67 lower cover, 68 spring stopper, 69 screw, 70 compressor, 71 air-cooled condenser, 72 condensing piping, 72a left piping, 72b ceiling piping, 72c rear piping, 72d right piping, 73 Dew prevention piping, 73a 1st piping part, 73b 2nd piping part, 73 3rd piping part, 73d 4th piping part, 74 dryer, 75 decompression device, 76 switching valve, 77a capillary tube, 77b capillary tube, 78 cooler, 79 suction pipe, 81 ceiling, 82 floor, 83 guide part, 83a protrusion, 83b Base part, 85, 185 Aluminum tape, 86, 186 Heat transfer sheet, 87 Temperature distribution, 88 Temperature distribution, 91 Notch, 92 Notch, 93 Screw hole, 94, 95 Gasket, 94t, 95t Upper fin part, 95a Back extension Outlet, 96 mating groove, 97 packing, 99 control unit, 100 refrigerator, 111 outer box plate material, 200 outer box material, CR refrigerant circuit, Gb, Gt gap, Gd door gap, Hout relative humidity (outside relative humidity) Pr power supply rate, Ws sheet width, Ls sheet length.

Claims

An insulating box body having an opening and a storage chamber, and having an outer box and a vacuum heat insulating material provided on the inner surface side of the outer box;
A pipe through which the refrigerant discharged by the compressor flows, and is disposed on the inner surface side of the outer box and the storage chamber side is covered with the vacuum heat insulating material;
A refrigerator-freezer comprising: a heat transfer sheet provided between the outer box and the vacuum heat insulating material and transmitting heat of the condensation pipe to the opening of the heat insulating box.
A storage room temperature sensor for measuring the temperature of the storage room;
The refrigerator-freezer of Claim 1 further equipped with the control part which controls the said compressor so that the temperature measured by the said store room temperature sensor may turn into preset temperature.
Two freely openable doors arranged side by side so as to close the opening,
A built-in heater unit that generates heat when energized, and a partition plate that closes a gap formed between the two doors from the storage chamber side;
An outside temperature sensor that measures the temperature of the outside air,
And an outside air humidity sensor for measuring the relative humidity of outside air,
The controller is
The energization of the heater unit is controlled based on a temperature measured by the outside air temperature sensor, a relative humidity measured by the outside air humidity sensor, and a temperature measured by the storage chamber temperature sensor. Freezer refrigerator.
A gasket that is provided on each of the two doors and that closes a gap formed between the door and the partition plate;
The condensation pipe is disposed on the upper wall of the storage chamber of the heat insulation box,
The gasket is
In the opening, the fin extends upward so as to cover the gap between the lower surface of the upper wall and the upper end of the partition plate, and is in contact with the end surface on the opening side of the upper wall and the partition plate. The refrigerator-freezer according to claim 3 which has a section.
The outer box is
The refrigerator-freezer according to any one of claims 1 to 4, further comprising a flange portion formed by bending an end portion on the opening portion side.
The heat transfer sheet is provided on the inner surface of the outer box, one of which is extended to the flange portion,
The refrigerator-freezer according to claim 5, wherein the other end of the heat transfer sheet is fixed so that the condensation pipe is in contact therewith.
The condensation pipe is fixed so as to contact the inner surface of the outer box,
The heat transfer sheet is provided in the outer box so that one extends to the inner surface side of the flange portion and the other covers the condensation pipe fixed to the inner surface of the outer box. The refrigerator-freezer as described.
The refrigerator-freezer according to any one of claims 5 to 7, wherein the flange portion is provided along an end surface on the opening portion side and has a U-shape.
The refrigerator-freezer according to any one of claims 1 to 8, wherein the heat transfer sheet has a long shape extending from the condensation pipe to the opening.
The refrigerator-freezer according to any one of claims 1 to 9, wherein a groove for accommodating the condensing pipe is formed at a position facing the outer box in the vacuum heat insulating material.