JP4020668B2 - Refrigerator for home use - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a household refrigerator (including a freezer compartment) including an ice making room as well as a vegetable compartment and a refrigerator compartment.
[0002]
[Prior art]
As this type of refrigerator, for example, as shown in FIG. 3, a freezing refrigerator (hereinafter simply referred to as a refrigerator) provided with an ice making room 1 together with a refrigerating room 2, a vegetable room 3, a freezing / refrigerating switching room 4, a freezing room 5, and the like. 100X is well known.
[0003]
In this refrigerator 100X, for example, as shown in FIG. 4, a high-temperature and high-pressure refrigerant vapor (not shown) obtained by pressurization by the compressor 6 is sent to a radiator (not shown) to dissipate and condense the low-temperature and high-pressure refrigerant. The refrigerant liquid is diverted and conveyed to the evaporators 7A and 7B installed on the back side, evaporated, and the cool air cooled by the latent heat of evaporation of the refrigerant taken away from the surroundings when the refrigerant evaporates is circulated to the required parts by the fans 8A and 8B, respectively. It is configured to be supplied and cooled.
[0004]
For example, in this refrigerator 100X, the cold air cooled to, for example, about −20 ° C. by the evaporator 7A is supplied to the refrigerating room 2 by the blower 8A, and a part thereof is the vegetable room 3 and the cold air reflux formed below it. It returns to the evaporator 7A via the path 9, where it is cooled again and provided for the next circulation.
[0005]
On the other hand, the cool air cooled to, for example, about −20 ° C. by the evaporator 7B is divided and supplied to the ice making chamber 1 and the freezing chamber 5 by the blower 8B, and the cool air that has finished the cooling action passes through the cool air recirculation path 10. It returns to the evaporator 7B, is cooled again there, and is used for the next circulation.
[0006]
In the freezing / refrigeration switching chamber 4, a flow path is formed so that the cold air cooled by the evaporator 7B can be selectively supplied by appropriate flow path switching (not shown).
[0007]
A water receiving ice tray 11 is installed in the ice making chamber 1 so that it can be reversed by an electric motor 12. Then, the water receiving ice tray 11 is supplied with water (not shown) of a water storage tank 13 installed above the ice making chamber 1 by a water supply pump 14, and the water is cooled by cold air blown out from the cold air outlet 15 to make ice. The water receiving ice tray 11 is inverted by the electric motor 12 and the ice made by the water receiving ice tray 11 is dropped into the ice storage box 16 so that a predetermined range of ice can always be stocked.
[0008]
The ice making chamber 1 is provided with a detection lever for detecting the ice storage amount. When ice exceeding a predetermined amount is accumulated in the ice storage box 16, even if ice is formed in the water receiving ice tray 11, the ice storage box 16 is provided. The ice removing operation is not performed, and the ice storage box 16 is configured to deice and drop into the ice storage box 16 when the ice in the ice storage box 16 becomes less than a predetermined amount, and the ice storage box 16 always stores a predetermined range of ice. It has become.
[0009]
[Problems to be solved by the invention]
However, since the conventional refrigerator is not configured to preferentially cool the ice making chamber, ice making may not be in time when a large amount of ice is consumed at a party or the like. Therefore, it is necessary to be able to make ice quickly when necessary, which has been a problem to be solved.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems of the prior art, the present invention is installed by circulating and supplying a cold heat generating section that generates cold heat, and the internal air (hereinafter referred to as cold air) cooled by the cold heat generated in the cold heat generating section. In a domestic refrigerator equipped with an ice making chamber that performs ice making in a water receiving ice tray together with a refrigerator room, a freezing room, etc., a heat transfer plate is installed above the water receiving ice tray in the ice making chamber, and the lower surface is the heat absorption side And a Peltier element whose upper surface is the heat generation side, a lower surface of the Peltier element is in close contact with the upper surface of the heat transfer plate, and a cooling air return path for returning the heat generated on the upper surface of the Peltier element to the cold heat generating part An upper surface of the Peltier element is disposed facing the return path so as to be taken away by the flowing cold air, and includes a switch operated to energize the Peltier element when necessary, and the Peltier element based on the switch operation. By energization of the child, there is provided a household refrigerator quick ice-making starts with ice by the circulation of the cold air.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. In order to facilitate understanding, in these drawings, parts having the same functions as those described in FIGS. 3 and 4 are denoted by the same reference numerals.
[0014]
In the domestic refrigerator 100 of the present invention, a heat transfer plate 17 made of a metal having good thermal conductivity, such as aluminum, is installed above the water receiving ice tray 11. The heat transfer plate 17 is provided in a shape that forms a part of a cylinder, and is installed close to the water receiving ice tray 11 as long as it does not come into contact with the water receiving ice tray 11 even if the water receiving ice tray 11 is reversed by the electric motor 12.
[0015]
A Peltier element 18 is installed on the upper side of the heat transfer plate 17 with its lower surface in close contact. In the Peltier element 18, a part of a partition wall 19 that divides the cold air reflux path 9 and the ice making chamber 1 formed on the lower side of the vegetable chamber 3 is cut out and inserted there.
[0016]
Then, by operating a switch 22 incorporated in an operation panel 21 provided on the outer surface of the door 20, the Peltier element 18 can be energized, and heat is absorbed by the lower metal of the Peltier element 18, and the upper metal It is configured to generate heat.
[0017]
Accordingly, the cold air cooled by the evaporator 7B is circulated and supplied to the ice making chamber 1 by the blower 8B, and when the Peltier element 18 is energized, it absorbs heat from the lower metal and the heat transfer plate 17 is cooled. In the water receiving ice tray 11 installed in the ice making chamber 1, ice making proceeds promptly.
[0018]
The heat generated by the metal on the upper side of the Peltier element 18 is taken away by the cold air flowing through the cold air recirculation path 9, and the cold air heated there returns to the evaporator 7A and is cooled.
[0019]
In the household refrigerator 100 of the present invention configured as described above, when a large amount of ice is consumed at a time at a party or the like and the ice storage box 16 becomes empty, the switch 22 is operated to energize the Peltier element 18. By doing so, since ice making is performed quickly, it is never said that ice making is not in time.
[0020]
In addition, since this invention is not limited to the said embodiment, various deformation | transformation implementation is possible in the range which does not deviate from the meaning as described in a claim.
[0021]
For example, a cool air circulation path is formed so that the cool air flowing by cooling the upper heat generating metal of the Peltier element 18, that is, the cool air flowing in the cool air recirculation path 9 in FIG. 1, returns to the evaporator 7 B that supplies cool air to the ice making chamber 1. It is also possible (including a single evaporator).
[0022]
It is also possible to provide two compressors 6 so that the refrigerant circulated and supplied to the evaporators 7A and 7B is compressed by a dedicated compressor and supplied.
[0023]
Further, when rapid ice making is started by operating the switch 22 to energize the Peltier element 18, detection for detecting the amount of ice stored in the water receiving ice tray 11 without manually deenergizing the Peltier element 18. It is also possible to configure the control unit so that energization to the Peltier element 18 is automatically cut off when the lever detects full ice.
[0024]
Further, it is possible to directly cool the cold air in the cold air passage (regardless of the inside and outside of the cold air outlet) directly by the Peltier element 18 without using the heat transfer plate 17.
[0025]
The metal on the heat generating side of the Peltier element 18 is cooled by a water cooling method in which water (antifreeze) cooled by the evaporators 7A and 7B is circulated and cooled in addition to air cooling by cool air circulating in the storage. Etc. are also possible.
[0026]
【The invention's effect】
As described above, the present invention is a water receiving system that is installed by circulating and supplying a cold heat generating unit that generates cold heat and internal air (hereinafter referred to as cold air) that is cooled by the cold generated by the cold heat generating unit. In a household refrigerator equipped with an ice making chamber that performs ice making in an ice tray together with a refrigerator compartment, a freezer compartment, etc., a heat transfer plate is installed above the water-receiving ice tray in the ice making chamber, the lower surface is the endothermic side, and the upper surface Is provided with a Peltier element on the heat generation side, the lower surface of the Peltier element is in close contact with the upper surface of the heat transfer plate, and the heat generated on the upper surface of the Peltier element is caused by the cold air flowing through the cold air return path returning to the cold heat generating unit An upper surface of the Peltier element is disposed so as to face the return path so as to be taken away, and includes a switch operated to energize the Peltier element when necessary, and energization of the Peltier element based on the switch operation Therefore, since it is a household refrigerator quick ice-making starts with ice by circulation of the cool air, it is possible to quick ice-making by energizing the Peltier element when required.
[0027]
Therefore, even when a large amount of ice is consumed at a party or the like and the ice storage box is emptied, ice making is performed quickly by energizing the Peltier element, so it has never been said that ice making will not be in time. .
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a household refrigerator according to the present invention.
FIG. 2 is an explanatory diagram of a main part of a household refrigerator according to the present invention.
FIG. 3 is an explanatory diagram showing a conventional technique.
FIG. 4 is an explanatory view showing another cross section of the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ice making room 2 Refrigerating room 3 Vegetable room 4 Freezing / refrigeration switching room 5 Freezing room 6 Compressor 7A, 7B Evaporator clamping arm 8A, 8B Blower 9, 10 Cold air return path 11 Water receiving ice tray 12 Electric motor 13 Tank 14 Pump 15 Cold air outlet 16 Ice storage box 17 Heat transfer plate 18 Peltier element 19 Partition 20 Door 21 Control panel 22 Switch 100, 100X Refrigerator

Claims (1)

There is a cold heat generating unit that generates cold heat , and an ice making chamber that makes ice in a receiving ice tray that is installed by circulating and supplying the internal air cooled by the cold heat generated by the cold heat generating unit (hereinafter referred to as cold air). In a household refrigerator equipped with a refrigerator room, a freezer room, etc., a heat transfer plate is installed above the water-receiving ice tray in the ice making room, and includes a Peltier element whose lower surface is the heat absorption side and whose upper surface is the heat generation side, The lower surface of the Peltier element is in close contact with the upper surface of the heat transfer plate, and the upper surface of the Peltier element is taken away by the cold air flowing through the cooling air return path returning to the cold heat generating unit. The switch is disposed facing the reflux path and is operated to energize the Peltier element when necessary. By energizing the Peltier element based on the switch operation, the cold air is circulated. Household refrigerators, characterized in that the start is quick ice-making along with the ice.

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