JP2004170028A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator having good cooling efficiency and offering simple construction for cooling in a vegetable chamber. <P>SOLUTION: The refrigerator has a heat insulating casing 1 partitioned into a refrigerating chamber 4, a freezing chamber 5 and the vegetable chamber 6 from top to bottom with an upper heat insulating partition wall 2 and a lower heat insulating partition wall 3. It comprises a door 7 for opening/closing a front opening of the refrigerating chamber 4, a door 10 for opening/closing a front opening of the vegetable chamber 6, and a metal member 23 arranged in the lower heat insulating partition wall 3. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerator that divides a heat insulating box into an upper refrigerated temperature zone, a freezing temperature zone, and a lower refrigerated temperature zone from above by an upper heat insulating partition and a lower heat insulating partition.
[0002]
[Prior art]
In some large refrigerators, the heat-insulating box body is divided into a refrigerator room (refrigeration temperature zone room), a vegetable room (refrigeration temperature zone room), and a freezing room from above by an upper partition wall and a lower heat-insulation partition wall.
[0003]
In addition, as another partitioning method, the heat-insulating box body is divided into an upper heat-insulating partition wall and a lower heat-insulating partition wall, and a refrigeration room (upper refrigeration temperature zone room), a freezing room (freezing temperature zone room), and a vegetable room (lower refrigeration temperature room). Some rooms are divided into obi rooms.
[0004]
From the viewpoint of cooling efficiency, the latter, in which the refrigerating temperature zone chambers are provided above and below the freezing compartment in the freezing temperature zone, can reduce the amount of heat leaking to the outside, and thus is more efficient.
[0005]
However, in a normal refrigerator, the refrigerator compartment and the vegetable compartment are arranged in one cold air circulation path, so in the latter refrigerator, a ventilation duct connecting the uppermost refrigerator compartment and the lower vegetable compartment is provided. It must be formed, and the structure becomes complicated (see Patent Document).
[0006]
[Patent Document]
JP-A-8-2476121
[Problems to be solved by the invention]
An object of the present invention is to provide a refrigerator having a simple structure and high cooling efficiency.
[0008]
[Means for Solving the Problems]
According to the present invention, the heat-insulating box 1 is divided into a refrigerator compartment 4 (upper refrigerator temperature zone room), a freezing room 5 (freezing temperature zone room), and a vegetable room 6 (lower portion) by the upper heat-insulating partition wall 2 and the lower heat-insulating partition wall 3. In a refrigerator partitioned into a refrigerator temperature zone, a door 7 for opening and closing the front opening of the refrigerator compartment 4, a door 10 for opening and closing the front opening of the vegetable compartment 6, and a metal member 23 disposed inside the lower heat insulating partition wall 3. (A heat conductive member having high thermal conductivity).
[0009]
Further, the present invention is characterized in that the metal member is disposed not at the frontmost portion of the lower heat insulating partition wall 3 but at a position deeper than the frontmost portion.
[0010]
The present invention also relates to a refrigerator that divides the heat-insulating box 1 into a refrigerator compartment 4, a freezer compartment 5, and a vegetable compartment 6 from above by means of an upper heat-insulating partition wall 2 and a lower heat-insulating partition wall 3. A rotating door 7 for opening and closing the opening, a drawer door 10 for opening and closing the front opening of the vegetable compartment 4, a cooling room 13 provided at the back of the freezing room 5 and provided with a cooler 15, and provided in the cooling room 13. It is characterized by comprising a blower 16 for circulating cool air in the cooling chamber 13 to the refrigerator compartment 4 and the freezing compartment 5, and a metal member 23 disposed inside the lower heat insulating partition wall 3.
[0011]
Furthermore, the present invention opens and closes the front opening of the refrigerator compartment 4 in a refrigerator that partitions the thermal insulation box 1 into a refrigerator compartment 4, a freezer compartment 5, and a vegetable compartment 6 from above by an upper heat insulation partition wall 2 and a lower heat insulation partition wall 3. A revolving door 7, a drawer door 10 for opening and closing the front opening of the vegetable compartment 6, a cooling compartment 13 provided at the back of the freezing compartment 5 and provided with a cooler 15, and a cooling compartment 13 provided in the cooling compartment 13 A blower 16 for circulating cold air through the refrigerator compartment 4 and the freezer compartment 5, a damper device 20 for selectively circulating cold air from the cooling compartment 13 through the refrigerator compartment 4, and a lower heat insulating partition wall 3 And a metal member 23 provided.
[0012]
Further, in the present invention, the vegetable room 6 (lower refrigeration temperature zone room) is provided with a cold air circulation path independent of the refrigeration room 4 (the upper refrigeration temperature zone room) and the freezing room 5 (freezing temperature zone room). It is characterized by having.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
First Embodiment A refrigerator according to a first embodiment of the present invention will be described with reference to FIG.
[0014]
FIG. 1 is a sectional view of the refrigerator.
[0015]
The main body of the refrigerator is constituted by a heat insulating box 1 having an open front.
[0016]
The inner space of the heat-insulating box 1 is divided into three spaces by two substantially horizontal heat-insulating partition walls 2 and 3, the upper space is a refrigerator room 6, the central space is a freezer room 7, and the lower space is a lower room. The space is a vegetable room 8.
[0017]
The front openings of the refrigerator compartment 6, the freezer compartment 7, and the vegetable compartment 8 are closed by heat insulating doors 7, 8, 9, and 10 so as to be freely opened and closed.
[0018]
The heat insulating door 7 is a revolving door, and when the door 7 is opened, the cool air in the refrigerator compartment 4 leaks out.
[0019]
The heat insulating doors 8 and 9 are drawer doors. When the drawer doors 8 and 9 are pulled out, the containers 11a and 11b in the freezing room 5 are also drawn out. When the door 7 is opened, external air flows into the freezing compartment 5, but the cool air in the containers 11a and 11b remains accumulated. When the door 7 is closed, most of the air flowing into the freezer 5 is pushed out again.
[0020]
The heat-insulating door 10 is a drawer door, and when the drawer door 10 is pulled out, the container 12 in the vegetable compartment 6 is also drawn out. When the door 10 is opened, external air flows into the vegetable compartment 6, but cool air in the vegetable container 12 remains. When the door 10 is closed, most of the air flowing into the vegetable compartment 6 is pushed out again.
[0021]
A partition plate 14 made of resin is provided at the back of the freezer compartment 5. The cooling chamber 13 is partitioned by the partition plate 14. In the cooling chamber 13, a cooler 15 and a blower 16 are arranged.
[0022]
17 is a cool air outlet for the freezer compartment. Reference numeral 18 denotes a freezing room return ventilation duct.
[0023]
Reference numeral 19 denotes a refrigerator compartment ventilation duct for supplying cool air into the refrigerator compartment 6.
[0024]
Reference numeral 20 denotes a damper device for selectively supplying cold air into the refrigerator compartment 6. The upper part of the cooling chamber 13 communicates with the lower end of the refrigerator compartment ventilation duct 19 having the damper device 20 via a ventilation duct (not shown).
[0025]
The cool air in the cooling room 13 is blown out to the freezing room 5 by the blower 16, and is blown out to the refrigerator room 4 through a duct and a damper device 20 and a ventilation duct 19 for the refrigerator room (not shown).
[0026]
The cool air blown out to the refrigerator compartment 4 returns to the lower part of the cooling compartment 13 via a return duct (not shown). In addition, the cool air blown out to the freezing room 5 returns to the lower part of the cooling room 13 via the freezing room return ventilation duct 18.
[0027]
A machine room 21 is formed below the rear part of the heat-insulating box 1, and a compressor 22 and the like are arranged in the machine room 21. The compressor 22 constitutes a refrigeration cycle together with the above-described cooler 15 and a condenser and a capillary tube (not shown).
[0028]
Reference numeral 23 denotes a metal member for heat transfer having a U-shaped cross section disposed inside the lower heat insulating partition wall 3. The upper surface of the metal member 23 is located on the bottom surface of the freezer compartment 5, and the lower surface is located on the upper surface of the vegetable compartment 6. Thereby, the cold heat of the freezing room 5 is transmitted to the vegetable room 6, and the vegetable room 6 is cooled. Further, the metal member 23 is arranged not at the frontmost portion of the lower heat insulating partition wall 3 but at a position deeper than the frontmost portion. This is because, if it is arranged at the forefront of the lower heat insulating partition wall 3, the cool heat escapes to the outside instead of the vegetable room.
[0029]
In this refrigerator, when the compressor 22 operates, hydrocarbon-based refrigerants such as isobutane, pentane and propane circulate in the refrigeration cycle, and the temperature of the cooler 15 decreases.
[0030]
The cooler 15 cools the surrounding air to generate cool air, and the cool air is blown out and circulated by the blower 16 into the freezing room 5 as shown by an arrow in FIG. .
[0031]
That is, by operating the blower 16, the air in the cooling chamber 13 rises while being cooled by the cooler 15.
[0032]
When the damper device 20 is open, most of the cool air flows into the freezer compartment 5 from the freezer outlet 17, cools the freezer compartment 5, and then passes through the freezer return ventilation duct 18 to the cooling compartment. Return to the bottom of 13. When the damper device 20 is closed, all cool air circulates in the freezer 5.
[0033]
When the damper device 20 is open, the rest of the cool air flows into the refrigerator compartment ventilation duct 19 via a ventilation duct (not shown), flows into the refrigerator compartment 6 and cools, and then passes through the ventilation duct (not shown). It returns to the lower part of the cooling chamber 13.
[0034]
In this manner, during the cooling operation, the refrigerating compartment 4 and the freezing compartment 5 are cooled by the circulation of cool air from the cooler 15.
[0035]
Then, the cold heat of the freezer compartment 5 is transmitted to the vegetable compartment 6 via the metal member 23. The vegetable compartment 6 is entirely cooled by natural convection.
In addition, in this embodiment, although the vegetable room 6 was cooled by natural convection, the blower for air forced circulation may be separately arrange | positioned in the back of the vegetable room.
[0036]
In the above embodiment, the refrigerant is a hydrocarbon-based refrigerant. However, the type of the refrigerant can be appropriately selected, and may be Freon.
[0037]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the refrigerator of this invention, the freezing room which is a freezing temperature zone room is vertically sandwiched between the refrigeration room which is a refrigerated temperature zone room, and a vegetable room, and cooling efficiency improves. In addition, the vegetable compartment can be cooled with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a sectional view of a refrigerator according to a first embodiment.
[Explanation of symbols]
1 Insulated box,
2 Upper insulation partition,
3 Lower insulation partition,
4 refrigeration room (upper refrigeration temperature zone room),
5 freezing room (freezing temperature zone room),
6 vegetable room (lower refrigerated temperature zone room),
7 door (rotating door),
8 doors (drawer doors),
9 door (drawer door),
10 doors (drawer doors),
13 cooling room,
15 cooler,
16 blower,
20 damper device,
23 Metal members (heat transfer members).

Claims (6)

The heat-insulating box (1) is separated from the upper by the upper heat-insulating partition wall (2) and the lower heat-insulating partition wall (3). ) In the refrigerator
A door (7) for opening and closing a front opening of the upper refrigerated temperature zone chamber (4);
A door (10) for opening and closing a front opening of the lower refrigerated temperature zone chamber (6);
A refrigerator comprising: a heat transfer member (23) having high heat conductivity disposed inside the lower heat insulating partition (3). The refrigerator according to claim 1, wherein the heat transfer member (23) is arranged not at the forefront of the lower heat insulating partition (3) but at a position deeper than the forefront. The heat-insulating box (1) is separated from the upper by the upper heat-insulating partition wall (2) and the lower heat-insulating partition wall (3). ) In the refrigerator
A rotating door (7) for opening and closing a front opening of the upper refrigerated temperature zone chamber (4);
A drawer door (10) for opening and closing a front opening of the lower refrigerated temperature zone chamber (4);
A cooling chamber (13) provided at the back of the freezing temperature zone chamber (5) and including a cooler (15);
A blower (16) provided in the cooling chamber (13) for circulating cool air in the cooling chamber (13) to the upper refrigeration temperature zone chamber (4) and the freezing temperature zone chamber (5);
A refrigerator comprising: a heat transfer member (23) having high heat conductivity disposed inside the lower heat insulating partition (3). The heat-insulating box (1) is separated from the upper by the upper heat-insulating partition wall (2) and the lower heat-insulating partition wall (3). ) In the refrigerator
A rotating door (7) for opening and closing a front opening of the upper refrigerated temperature zone chamber (4);
A drawer door (10) for opening and closing a front opening of the lower refrigerated temperature zone chamber (6);
A cooling chamber (13) provided at the back of the freezing temperature zone chamber (5) and including a cooler (15);
A blower (16) provided in the cooling chamber (13) for circulating cool air in the cooling chamber (13) to the upper refrigeration temperature zone chamber (4) and the freezing temperature zone chamber (5);
A damper device (20) for selectively circulating cool air in the cooling chamber (13) to the upper refrigerated temperature zone chamber (4);
A refrigerator comprising: a heat transfer member (23) having high heat conductivity disposed inside the lower heat insulating partition (3). The refrigerator according to any one of claims 1 to 4, wherein the upper refrigerated temperature zone (4) is a refrigerated room, and the lower refrigerated temperature zone (6) is a vegetable room. The lower refrigeration zone (6) is provided with a cool air circulation path independent of the upper refrigeration zone (4) and the freezing zone (5). A refrigerator according to any one of the preceding claims.

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