JP2005127600A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save the energy in a refrigerator having a switching chamber capable of being switched from a refrigeration temperature zone to a freezing temperature zone and using a vacuum heat insulating material. <P>SOLUTION: The vacuum heat insulating material 25 is mounted inside of a partitioning wall 22 defining the switching chamber 24 at its upper part, and another vacuum heat insulating material 26 is mounted inside a partitioning wall 23 defining the switching chamber 24 at its lower part. The supercooling and freezing can be prevented by inhibiting the heat transfer to a storage chamber in a case when a temperature of the switching chamber 24 is determined to a temperature zone different from that of the storage chamber adjacent to the switching chamber 24, and further the energy can be saved. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator using a vacuum heat insulating material.

  In recent years, with the aim of energy saving and space saving of refrigerators, as a means of improving the heat insulation performance of refrigerators, there is a method of using vacuum heat insulating material having high heat insulation performance, and today, the demand for energy saving is increasing, hard urethane It can be said that there is an urgent need to improve the heat insulation performance by making the best use of a vacuum heat insulating material having a heat insulation performance several times to 10 times that of foam within an appropriate range (for example, patents) Reference 1).

  FIG. 7 shows a cross-sectional view of a conventional refrigerator. In this example, the vacuum heat insulating material 3 is disposed in a space formed by the outer box 1 and the inner box 2, and the refrigerator compartment 10, the vegetable compartment 11, the freezer compartment from the top by the upper partition wall 8 and the lower partition wall 9. 12 is constituted.

In this structure, the heat | fever which penetrate | invades into a refrigerator heat insulation box can be suppressed effectively, and energy saving can be achieved. In addition, the wall thickness can be reduced and the internal capacity can be increased.
JP-A-10-205989

  However, in the conventional refrigerator, the vegetable compartment and the freezer compartment in different temperature zones are adjacent to each other, and the vacuum heat insulating material is arranged on both sides of the vegetable compartment. There was a problem that it was too cold. On the contrary, in the freezer compartment, it is heated by heat conduction from the vegetable compartment, so that an extra cooling capacity is required. In addition, it is necessary to provide sufficient partition wall thickness to suppress heat conduction, or to use a heater to warm the vegetable room, so that the capacity of each room cannot be secured sufficiently, and the use of vacuum insulation material saves energy. However, there is a problem that the effect of energy saving is reduced by the heater.

  In view of the above problems, the present invention provides a refrigerator that ensures an appropriate temperature in each storage room and ensures higher energy saving even when a large amount of vacuum heat insulating material is used.

  In order to solve this problem, the present invention has the following configuration.

  The refrigerator of the present invention has an outer box, an inner box, a heat insulating material filled between the two boxes, a partition wall that vertically partitions the interior formed by the inner box, and a partition formed by the partition wall. A switching chamber that can be switched from a refrigerated temperature zone to a refrigeration temperature zone, a refrigeration chamber that is positioned above the switching chamber, and a freezing chamber that is positioned below the switching chamber, and is vacuum insulated inside the partition wall The material is arranged.

According to the present invention, when the switching chamber is set to the refrigeration temperature zone, it is possible to suppress the switching chamber from being cooled too much due to heat conduction from the freezing chamber. In addition, the freezing room can also save energy by suppressing heat conduction from the switching room. Further, the heater capacity can be reduced even when the refrigeration temperature is secured by using the heater. Furthermore, when the switching chamber is set to the freezing temperature zone, it is possible to suppress unnecessary cooling without heating the switching chamber due to heat conduction from the refrigerator compartment. Furthermore, since the refrigerator can also suppress heat conduction from the switching chamber, it is possible to prevent overcooling and freezing of the refrigerator. Further, even when the temperature of the refrigerator compartment is secured by the heater, the heater capacity can be reduced and energy saving can be achieved.

  As described above, according to the refrigerator of the present invention, the heat conduction is suppressed in the case where the vacuum insulating material becomes a different storage chamber in the upper and lower partition walls of the switching chamber, and overcooling and freezing can be prevented. The heater capacity can be reduced and energy saving can be achieved.

  The invention according to claim 1 includes an outer box, an inner box, a heat insulating material filled between the two boxes, a partition wall that vertically divides an interior formed by the inner box, and the partition wall. A switching chamber that can be switched from a refrigeration temperature zone defined by the above to a refrigeration temperature zone, a refrigeration chamber that is located above the switching chamber, and a freezing chamber that is located below the switching chamber, the interior of the partition wall A vacuum heat insulating material is disposed on the surface.

  According to the present invention, when the switching chamber is set to the refrigeration temperature zone, it is possible to suppress the switching chamber from being cooled too much due to heat conduction from the freezing chamber. Moreover, the freezer can also save energy by suppressing heat conduction from the switching room. Further, the heater capacity can be reduced even when the refrigeration temperature is secured by using the heater. Furthermore, when the switching chamber is set to the freezing temperature zone, it is possible to suppress unnecessary cooling without heating the switching chamber due to heat conduction from the refrigerator compartment. Furthermore, since the refrigerator can also suppress heat conduction from the switching chamber, it is possible to prevent overcooling and freezing of the refrigerator. Further, even when the temperature of the refrigerator compartment is secured by the heater, the heater capacity can be reduced, and energy saving can be achieved.

  The invention according to claim 2 is the partition according to claim 1, wherein the vacuum heat insulating material inside the partition wall that partitions the refrigerator compartment and the switching chamber is arranged on the switching chamber side, and the partition that separates the switching chamber and the freezing chamber is provided. The vacuum heat insulating material inside the wall is arranged on the freezer compartment side.

  ADVANTAGE OF THE INVENTION According to this invention, deterioration of the heat insulation performance with time of a vacuum heat insulating material can be suppressed by arrange | positioning a vacuum heat insulating material to the storage chamber side with low temperature.

  The invention according to claim 3 includes an outer box, an inner box, a heat insulating material filled between the two boxes, a partition wall that vertically divides the interior formed by the inner box, and the partition wall. A switching chamber that can be switched from a refrigeration temperature zone that is partitioned by a freezing temperature zone to a freezing temperature zone, a vegetable room that is located above the switching chamber, and a freezing room that is located below the switching chamber, and the interior of the partition wall A vacuum heat insulating material is disposed on the surface.

  According to the present invention, when the switching chamber is set to the refrigeration temperature zone, it is possible to suppress the switching chamber from being cooled too much due to heat conduction from the freezing chamber. Moreover, the freezer can also save energy by suppressing heat conduction from the switching room. Further, the heater capacity can be reduced even when the refrigeration temperature of the switching chamber is secured using the heater. Furthermore, when the switching chamber is set to the freezing temperature zone, it is possible to suppress unnecessary cooling without heating the switching chamber due to heat conduction from the vegetable chamber. Furthermore, since the vegetable room can also suppress heat conduction from the switching room, it is possible to prevent overcooling and freezing of the vegetable room. Moreover, also when ensuring the temperature of a vegetable compartment with a heater, a heater capacity | capacitance can be made small and energy saving can be achieved. Moreover, the temperature fluctuation of a vegetable room can be made small and the freshness of vegetables can be improved.

According to a fourth aspect of the present invention, in the invention of the third aspect, the vacuum heat insulating material inside the partition wall that partitions the vegetable room and the switching chamber is disposed on the switching chamber side, and the partition that partitions the switching chamber and the freezing chamber. The vacuum heat insulating material inside the wall is arranged on the freezer compartment side.

  ADVANTAGE OF THE INVENTION According to this invention, deterioration of the heat insulation performance with time of a vacuum heat insulating material can be suppressed by arrange | positioning a vacuum heat insulating material to the storage chamber side with low temperature.

  The refrigerator according to claim 5 includes an outer box, an inner box, a heat insulating material filled between the two boxes, a partition wall that vertically partitions an interior formed by the inner box, and the partition wall. A switching chamber that can be switched from a refrigeration temperature zone that is partitioned by a freezing temperature zone, a refrigeration chamber that is positioned above the switching chamber, and a vegetable chamber that is positioned below the switching chamber, and is provided inside the partition wall. A vacuum heat insulating material is arranged.

  According to the present invention, when the switching chamber is set to the freezing temperature zone, it is possible to suppress unnecessary cooling without heating the switching chamber due to heat conduction from the refrigerator compartment and the vegetable compartment. In addition, since heat conduction from the switching room can be suppressed in both the refrigerated room and the vegetable room, overcooling and freezing of the refrigerated room and the vegetable room can be prevented. Moreover, also when ensuring the temperature of a refrigerator compartment and a vegetable compartment with a heater, a heater capacity | capacitance can be made small and energy saving can be aimed at. Moreover, a partition wall can be made thin and the capacity | capacitance of each chamber can fully be ensured.

  The refrigerator according to claim 6 is the partition according to the invention according to claim 5, wherein the vacuum heat insulating material inside the partition wall that partitions the refrigerator compartment and the switching chamber is disposed on the switching chamber side, and partitions the partition chamber and the vegetable compartment. The vacuum heat insulating material inside the wall is arranged on the switching chamber side.

  ADVANTAGE OF THE INVENTION According to this invention, degradation of the heat insulation performance of a vacuum heat insulating material with time can be suppressed by arrange | positioning a vacuum heat insulating material in the storage chamber side which can make temperature control low.

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

(Embodiment 1)
A refrigerator according to the first embodiment is shown in FIGS. FIG. 1 shows a front sectional view of the refrigerator, and FIG. 2 shows a side sectional view of the refrigerator. 1 and 2, reference numeral 18 denotes a refrigerator main body, and 19 is a heat insulating box including the refrigerator compartment door 5, the switching compartment door 18, and the freezer compartment door 7, and an inner box 2 made of a synthetic resin such as ABS and an iron plate. The hard urethane foam 4 and the vacuum heat insulating material 21 are arranged in a multilayer structure in a space formed by the outer box 1 made of a metal such as.

  Moreover, the heat insulation box 20 is divided into rooms in each temperature zone by partition walls 22 and 23, 10 constitutes a refrigerator room, 24 constitutes a switching room, and 12 constitutes a freezer room. The freezer compartment 12 is set to a freezing temperature range of approximately −15 ° C. to −25 ° C., and the refrigerator compartment 10 is set to a refrigerator temperature range of approximately 0 ° C. to 10 ° C. The switching chamber 24 enables switching from the refrigeration temperature zone to the freezing temperature zone. 13 is a compressor, 14 is a condenser, 15 is a cooler, and constitutes a cooling device. That is, the refrigerator main body 19 includes a heat insulating box 20, a refrigerating room 10, a switching room 24 and a freezing room 12, a cooling device including a compressor 13, a condenser 14, and a cooler 15 that cool the rooms in these temperature zones. It is constituted by.

  Further, urethane foam 4, vacuum heat insulating materials 25 and 26, and electric heaters 27 and 28 are arranged inside the partition walls 22 and 23. Here, the vacuum heat insulating material 25 is disposed on the switching chamber side, the vacuum heat insulating material 26 is disposed on the freezing chamber side, the electric heater 27 is disposed on the refrigerating chamber side, and the electric heater 28 is disposed on the switching chamber side.

In the above configuration, the heat insulation performance of the switching chamber 24 and the freezer compartment 12 is improved by the vacuum heat insulating material 26 disposed inside the partition wall 23 even when the switching chamber 24 is in a refrigerated temperature zone. Even when an electric heater in the switching chamber is necessary, such as when the temperature is low, the heater capacity can be reduced, and energy saving can be achieved. Further, the freezing room also reduces the amount of heat entering from the switching room and reduces the cooling performance, so that energy can be saved.

  Moreover, since the electric heater 28 and the vacuum heat insulating material 26 are arranged without contacting each other, the deterioration of the vacuum heat insulating material 26 with time can be suppressed.

  Furthermore, even if the switching chamber 24 is in the freezing temperature zone, the heat insulating performance of the refrigeration chamber 10 and the switching chamber 24 is improved by the vacuum heat insulating material 25 arranged inside the partition wall 22, so that an electric heater for the refrigeration chamber is particularly necessary. Even at times, the heater capacity can be reduced. In addition, the switching room also reduces the amount of heat entering from the refrigerator compartment and reduces the cooling performance, so that energy saving can be achieved.

  In addition, the vacuum heat insulating material 25 can be prevented from being deteriorated over time by arranging the vacuum heat insulating material on the storage chamber side where the temperature is low. Moreover, since the electric heater 27 and the vacuum heat insulating material 25 are arranged without contacting, the deterioration of the vacuum heat insulating material 25 with time can be further suppressed.

(Embodiment 2)
A refrigerator according to the second embodiment is shown in FIGS. FIG. 3 shows a front sectional view of the refrigerator, and FIG. 4 shows a side sectional view of the refrigerator. 3 and 4, the heat insulating box 43 is divided into rooms in each temperature zone by partition walls 29, 30, and 23, 10 is a refrigerator room, 11 is a vegetable room, 24 is a switching room, and 12 is a freezer room. It is composed. The refrigerator main body 42 includes a heat insulating box 43, a refrigerator compartment 10, a vegetable compartment 11, a switching room 24 and a freezer compartment 12, a compressor 13 that cools the rooms in these temperature zones, a condenser 14, and a cooler 15. It is constituted by a cooling device.

  Further, urethane foam 4, vacuum heat insulating materials 31, 26 and electric heaters 32, 28 are arranged inside the partition walls 30, 23. Here, the vacuum heat insulating material 31 is arranged on the switching room side, the vacuum heat insulating material 26 is arranged on the freezing room side, the electric heater 32 is arranged on the vegetable room side, and the electric heater 28 is arranged on the switching room side.

  In the above configuration, the heat insulation performance of the switching chamber 24 and the freezer compartment 12 is improved by the vacuum heat insulating material 26 disposed inside the partition wall 23 even when the switching chamber 24 is in a refrigerated temperature zone. Even when an electric heater in the switching chamber is required, such as when the temperature is low, the heater capacity can be reduced and energy saving can be achieved. Further, the freezing room also reduces the amount of heat entering from the switching room and reduces the cooling performance, so that energy can be saved.

  Moreover, since the electric heater 28 and the vacuum heat insulating material 26 are arranged without contacting each other, the deterioration of the vacuum heat insulating material 26 with time can be suppressed.

  Furthermore, even if the switching chamber 24 is in the freezing temperature zone, the heat insulating performance of the vegetable chamber 11 and the switching chamber 24 is improved by the vacuum heat insulating material 31 disposed inside the partition wall 30, and thus an electric heater for the vegetable chamber is particularly necessary. Even at times, the heater capacity can be reduced. Moreover, the temperature fluctuation of the vegetable compartment 11 can be made small and the freshness of vegetables can be improved. Further, the switching room also reduces the amount of heat entering from the vegetable room and reduces the cooling performance, so that energy saving can be achieved.

  In addition, the vacuum heat insulating material 31 can be prevented from being deteriorated with time by arranging the vacuum heat insulating material on the storage chamber side where the temperature is low. Moreover, since the electric heater 32 and the vacuum heat insulating material 31 are arranged without contacting, the deterioration of the vacuum heat insulating material 31 with time can be further suppressed.

(Embodiment 3)
A refrigerator according to the third embodiment is shown in FIGS. FIG. 5 shows a front view of the refrigerator, and FIG. 6 shows a side sectional view of the refrigerator. 5 and 6, the heat insulating box 45 is divided into rooms in each temperature zone by partition walls 33, 34, 35, 10 is a refrigerator room, 11 is a vegetable room, 24 is a switching room, and 12 is a freezer room. It is composed. The refrigerator main body 44 includes a heat insulating box 45, a refrigerator compartment 10, a switching room 24, a vegetable compartment 11 and a freezer compartment 12, a compressor 13 that cools a room in each temperature zone, a condenser 14, and a cooler 15. It is constituted by a cooling device.

  Further, urethane foam 4, vacuum heat insulating materials 36, 37, 38 and electric heaters 39, 40, 41 are arranged inside the partition walls 33, 34, 35. Here, the vacuum heat insulating material 36 is arranged on the switching chamber side, the electric heater 39 is arranged on the refrigerator compartment side, and the electric heater 39 is arranged on the vegetable compartment side.

  In the configuration as described above, the heat insulation performance of the refrigerating chamber 10 and the switching chamber 24 is improved by the vacuum heat insulating material 36 disposed inside the partition wall 33 even when the switching chamber 24 is in the freezing temperature zone. Even when an electric heater is required, the heater capacity can be reduced. Moreover, since the heat insulation performance of the vegetable compartment 11 and the switching room 24 is improved by the vacuum heat insulating material 36 arranged inside the partition wall 33, especially when the electric heater of the vegetable compartment 11 is required, the heater capacity is reduced. it can. In addition, the switching chamber 24 also reduces the amount of heat entering from the refrigerator compartment 10 and the vegetable compartment 11 and reduces the cooling performance, so that energy saving can be achieved.

  Moreover, since the switching room 24 which may be used in the freezing temperature zone is disposed between the refrigerator compartment 10 and the vegetable compartment 11, the partition walls 33 and 34 need to have sufficient heat insulation performance. However, since sufficient heat insulating performance is ensured by the vacuum heat insulating materials 36 and 37, the partition walls 33 and 34 can be made thin, and the capacity of the refrigerator compartment 10, the switching chamber 24, and the vegetable compartment 11 is sufficiently ensured. can do.

  In addition, by arranging the vacuum heat insulating material 36 on the switching chamber side where the temperature control can be lowered, deterioration of the vacuum heat insulating material 36 over time can be suppressed.

  As described above, in the refrigerator according to the present invention, the heat conduction is suppressed in the case where the vacuum heat insulating material is stored in different temperature zones in the upper and lower partition walls of the switching chamber, and overheating and freezing can be prevented. Energy saving can be achieved by reducing the capacity, and it can be widely applied as a heat insulation structure of a cooling device provided with compartments having different temperatures.

Front sectional view of the refrigerator according to Embodiment 1 of the present invention. Side sectional view of the refrigerator of the same embodiment Front sectional drawing of the refrigerator in Embodiment 2 of this invention Side sectional view of the refrigerator of the same embodiment Front sectional drawing of the refrigerator in Embodiment 3 of this invention Side sectional view of the refrigerator of the same embodiment Side sectional view of a conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer box 2 Inner box 4 Hard urethane foam 22 Partition wall which partitions a refrigerator compartment and a switching chamber 23 Partition wall which partitions a switching chamber into a freezing chamber 25 Vacuum insulation material inside the partition wall which partitions a refrigerator compartment and a switching chamber 26 Freezing the switching chamber Vacuum heat insulating material inside the partition wall partitioning the chamber 27 Electric heater inside the partition wall partitioning the refrigerator compartment and the switching chamber 28 Electric heater inside the partition wall partitioning the switching chamber into the freezer compartment

Claims (6)

  From an outer box, an inner box, a heat insulating material filled between the two boxes, a partition wall that vertically divides the interior formed by the inner box, and a refrigeration temperature zone that is partitioned by the partition wall A switching chamber capable of switching to a freezing temperature zone, a refrigeration chamber positioned above the switching chamber, and a freezing chamber positioned below the switching chamber, wherein a vacuum heat insulating material is disposed inside the partition wall. Features a refrigerator.   The vacuum heat insulating material inside the partition wall that partitions the refrigerator compartment and the switching chamber is disposed on the switching chamber side, and the vacuum heat insulating material inside the partition wall that partitions the switching chamber and the freezing chamber is disposed on the freezing chamber side. The refrigerator according to claim 1.   From an outer box, an inner box, a heat insulating material filled between the two boxes, a partition wall that vertically divides the interior formed by the inner box, and a refrigeration temperature zone that is partitioned by the partition wall A switching room that can be switched to a freezing temperature zone, a vegetable room located in the upper part of the switching room, and a freezing room located in the lower part of the switching room, wherein a vacuum heat insulating material is disposed inside the partition wall; Features a refrigerator.   The vacuum heat insulating material inside the partition wall that partitions the vegetable room and the switching chamber is disposed on the switching chamber side, and the vacuum heat insulating material inside the partition wall that partitions the switching chamber and the freezing chamber is disposed on the freezing chamber side. The refrigerator according to claim 3.   From an outer box, an inner box, a heat insulating material filled between the two boxes, a partition wall that vertically divides the interior formed by the inner box, and a refrigeration temperature zone that is partitioned by the partition wall A switching chamber capable of switching to a freezing temperature zone, a refrigeration chamber positioned above the switching chamber, and a vegetable chamber positioned below the switching chamber, wherein a vacuum heat insulating material is disposed inside the partition wall Refrigerator.   The vacuum heat insulating material inside the partition wall that partitions the refrigerator compartment and the switching chamber is disposed on the switching chamber side, and the vacuum heat insulating material inside the partition wall that partitions the switching chamber and the vegetable room is disposed on the switching chamber side. The refrigerator according to claim 5.

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