JP2019113293A - refrigerator - Google Patents

Abstract

To provide a refrigerator preventing water in a water supply tank from being frozen while suppressing power consumption.SOLUTION: A refrigerator includes: a refrigeration chamber 2 refrigerating and storing a stored object; a freezing chamber 3 provided below the refrigeration chamber 2 via a heat insulation wall 14; and a water supply tank 32 placed on the heat insulation wall 14 in the refrigeration chamber 2. In the refrigerator, a heat conductor 41 is mounted between the heat insulation wall 14 and the water supply tank 32. The heat conductor 41 is mounted so as to extend from a high temperature part 2b of the refrigerator having a temperature higher than that of the surface of the heat insulation wall 14 to which the water supply tank 32 faces thereby the heat of the high temperature part 2b can be transferred to the surface of the heat insulation wall 14a on the side of the refrigerator by the heat conductor 41, so that water in the water supply tank 32 can be prevented from being frozen and any tank heater is not required and accordingly power consumption can be reduced.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a refrigerator that performs ice making by supplying water to an ice tray from a water supply tank.

Conventionally, a refrigerator that supplies water from a water supply tank to an ice tray to make ice is using a heater disposed below the water supply tank to prevent freezing of water in the water supply tank. (For example, refer to patent document 1)
FIG. 5 is a longitudinal cross-sectional view of the refrigerator described in Patent Document 1, and FIG. 6 is a cross-sectional view of a water supply portion of the same refrigerator.

  As shown to FIG. 5 and FIG. 6, the refrigerator compartment 102 is distribute | arranged to the upper part, and the freezer compartment 103 is distribute | arranged to the lower part. The refrigerator compartment 102 and the freezer compartment 103 are divided by the heat insulator wall 114 in which a space surrounded by the refrigerator compartment side heat insulating wall 114a and the freezer compartment side heat insulating wall 114b is mainly filled with a heat insulating material such as urethane foam. In the freezer compartment 103, a freezer zone 104 and an ice making zone 105 are arranged.

  A water supply tank 132 is disposed on the cold storage side heat insulation wall 114 a, and an ice tray 121 is disposed in the ice making zone 105. The water in the water supply tank 132 is led to the ice tray 121 by the water supply pipe 133. Ice making is performed by freezing the water supplied to the ice making tray 121.

  A tank heater 51 is provided on the surface of the cold storage side heat insulation wall 114 a facing the water supply tank 132. Further, a water supply pipe heater 52 is wound around the water supply pipe 133 in the range from the inside of the cold storage compartment 102 to the inside of the heat insulation wall 114 to the freezing room 103.

  During operation of the refrigerator, the surface temperature of the cold room side heat insulating wall 114a at the lower part of the water supply tank 132 is lower than the temperature of the freezing room 103 disposed below via the heat insulating wall 114, and heat passes through the heat insulating wall 114 By being taken into the chamber 103, depending on conditions, the temperature may become negative, and as a result, the water in the water supply tank 132 may be frozen. In order to prevent this, in addition to heating the water supply tank 132 by the tank heater 51, by providing the pipe heater 52 in the water supply pipe 133 as well, the residual water in the water supply pipe 133 is frozen and the water supply becomes defective. To prevent that.

Unexamined-Japanese-Patent No. 11-83278

  In the above-described conventional configuration, in addition to the need for power for heating the heater, the heater is provided in the refrigerator compartment, so extra cooling energy is required for the heat load of the heater, and power is further increased. I had the problem that it would be necessary.

  Then, an object of this invention is to provide the refrigerator which reduced power consumption.

  In order to solve the above problems, the refrigerator according to the present invention is mounted on a cold storage room for storing stored items, a freezing room provided below the cold storage room via a heat insulating wall, and the heat insulating wall in the cold storage room In a refrigerator having a water supply tank to be placed, a heat conductor is provided between the heat insulation wall and the water supply tank, and the heat conductor is higher in temperature of the refrigerator than the temperature of the heat insulation wall facing the water supply tank. It extends from a part and is provided.

  Thereby, the temperature of the heat insulation wall surface of the lower part of the water supply tank can be raised by thermally transporting from the high temperature part of the refrigerator to the heat insulation wall surface of the lower part of the water supply tank by the heat conductor, preventing the water in the water supply tank from freezing. It is possible to

  The refrigerator according to the present invention can prevent the water in the water supply tank from freezing, so the tank heater becomes unnecessary, and as a result, the power consumption of the refrigerator can be reduced.

Sectional view of a refrigerator according to Embodiment 1 of the present invention Sectional drawing of the water supply part of the refrigerator in Embodiment 1 of this invention Front view of the water supply part of the refrigerator in Embodiment 1 of this invention A view of the water supply unit of FIG. 3 from the direction of A Cross section of a conventional refrigerator Cross section of the water supply part of the conventional refrigerator

  According to a first aspect of the present invention, there is provided a refrigerator comprising: a cold storage room for storing stored items under refrigeration, a freezing room provided below the cold storage room via a heat insulating wall, and a water supply tank mounted on the heat insulating wall in the cold storage room. A heat conductor is provided between the heat insulating wall and the water supply tank, and the heat conductor is extended from a high temperature portion of the refrigerator, which is higher than the temperature of the heat insulating wall facing the water supply tank. The temperature of the heat insulation wall can be raised by transporting the heat of the high temperature part of the cold storage room by the heat conductor to the heat insulation wall facing the water supply tank, thereby preventing the water in the water supply tank from freezing. be able to. As a result, the tank heater becomes unnecessary, and the power consumption of the refrigerator can be reduced.

  In the second invention, in particular, the high temperature part in the first invention is a side wall surface of the refrigerator compartment, whereby heat transport is achieved from a position closer to the adiabatic wall surface to which the water supply tank faces. Therefore, heat transport loss can be suppressed compared to heat transport from a distant position, and freezing of water in the water supply tank can be further prevented. As a result, the tank heater becomes unnecessary, and the power consumption of the refrigerator can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited by the present embodiment.

Embodiment 1
1 is a cross-sectional view of a refrigerator according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view of the water supply unit, FIG. 3 is a front view of the water supply unit, and FIG. .

  In FIG. 1 and FIG. 2, the refrigerator 1 has a heat insulating box filled with a foamed heat insulating material 13 such as polyurethane foam between the outer case 11 and the inner case 12.

  The heat insulation box is provided with a refrigerator compartment 2 at the top and a freezer compartment 3 below the refrigerator compartment 2. The refrigerator compartment 2 and the freezer compartment 3 are divided by the heat insulation wall 14 in which a space surrounded by the refrigerator compartment side heat insulation wall 14a and the freezer compartment side heat insulation wall 14b is mainly filled with a heat insulation material such as urethane foam.

  The refrigerator compartment 2 stores stored products in a refrigerator and is sealed by an openable and closable insulated door 2a on the front. The freezing room 3 is for keeping frozen the stored matter, and the freezing zone 4 sealed by the openable and closable heat insulating door 4a on the front side, the ice tray 21 and the ice storage container 22 are arranged. And an ice making zone 5 sealed by

  In FIG. 3 and FIG. 4, the water supply unit 31 provided in the lower part of the refrigerating chamber 2 includes a water supply tank 32, a water supply pipe 33, and a water supply pump 34. The water supply tank 32 is detachably provided on the heat insulating wall 14 and stores city water and the like. The water supply pipe 33 is drawn out from the water supply tank 32, penetrates the heat insulating wall 14, and is disposed just above the ice tray 21. The water supply pump 34 is disposed on the path of the water supply pipe 33, and water in the water supply tank 32 is pumped up by the water supply pump 34, and water is supplied from the water supply tank 32 to the ice tray 21. The ice made on the ice tray 21 is stored in an ice storage container 22.

  The heat conductor 41 is attached from the surface of the cold storage side wall 2b as the high temperature part to the surface of the cold storage side heat insulation wall 14a at the lower part of the water supply tank 32. The heat conductor 41 can transport the heat of the relatively high temperature cold storage side wall 2b to the surface of the cold storage side heat insulation wall 14a at the lower part of the water supply tank 32 by heat penetration from the outside air through the foam heat insulating material 13 The surface temperature of the cold storage side heat insulation wall 14a can be kept at a positive temperature. Thereby, the temperature of the water stored in the water supply tank 32 can also be maintained at the positive temperature, and the water in the water supply tank 32 can be prevented from freezing. Further, by setting the high temperature portion as the side wall 2b of the cold storage room, the heat transport is performed at a position closer to the heat insulation wall 14a on the cold storage side, and the heat transfer loss can be suppressed compared to the heat transfer from a far position. Freezing of water in the tank can be further prevented.

  As the heat conductor 41, it is desirable to use a material excellent in thermal conductivity, in particular, a material excellent in flexibility and processability, such as an aluminum sheet and a graphite sheet.

  In the first embodiment, the heat conductor 41 is pasted from the surface of the cold storage side wall 2 b to the surface of the cold storage side heat insulation wall 14 a at the lower part of the water supply tank 32. According to this configuration, only by sticking the heat conductor 41 additionally to the conventional refrigerator, the freeze prevention effect of the water in the water supply tank can be obtained, and no special design change or mold change is required. Thus, the present invention can be carried out with little effort. Moreover, the same effect can be acquired, without impairing design property by using the heat conductor 41 of the color similar to the color of the refrigerator compartment side wall 2b.

  In addition, the heat conductor 41 is provided by providing a recess having a depth similar to the thickness of the heat conductor 41 in the cold storage side wall 2b and / or the cold storage side heat insulation wall 14a of the portion to which the heat conductor 41 is attached. Even if it is provided, the same effect can be obtained without reducing the internal capacity of the refrigerator and without disturbing the air passage in the refrigerator compartment 2.

  In the first embodiment, although the cold room side wall 2b is used as a heat transfer source of the heat conductor 41, the high temperature part is a relatively high temperature due to heat intrusion from the outside air through the heat insulating material 13 such as the back of the cold room 2. In addition to the place where it becomes, the pipe arranged for the dew condensation prevention such as the door, and the wall surface in the vicinity, especially if it is the place which can make the surface of the refrigerator compartment side heat insulation wall 14a under the water supply tank 32 positive temperature. It is not limited.

  As mentioned above, the refrigerator concerning the present invention has a feed water tank in a refrigerated temperature zone, and the circumference can apply to all the freezing apparatus used as an atmosphere of a frozen temperature zone.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Cold storage room 2a, 4a, 5a Heat insulation door 2b Cold storage room side wall 3 Freezing room 4 Freezing zone 5 Ice making zone 11 Outer box 12 Inner box 13 Foam heat insulating material 14 Heat insulation wall 14a Cold storage room heat insulation wall 14b Freezer room heat insulation wall 21 ice tray 22 ice storage container 31 water supply unit 32 water supply tank 33 water supply pipe 34 water supply pump 41 heat conductor

Claims (2)

In the refrigerator, the refrigerator comprises: a cold storage room for storing stored items under refrigeration, a freezing room provided below the cold storage room via a heat insulating wall, and a water supply tank placed on the heat insulating wall in the cold storage room A refrigerator characterized in that a heat conductor is provided between the water supply tank and the heat conductor, and the heat conductor is extended from a high temperature part of the refrigerator higher than the temperature of the heat insulation wall facing the water supply tank. The refrigerator according to claim 1, wherein the high temperature part is a side wall surface of the refrigerator compartment.

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