JP3389565B2 - refrigerator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a high energy saving effect.

[0002]

2. Description of the Related Art A conventional refrigerator 1, for example, as shown in FIG. 8, is provided with a plurality of compartments from a refrigerator compartment 2, a freezer compartment 3 and a vegetable compartment 4 in this order, and a refrigerator compartment is provided in front of each compartment. 2, a door 21 (swing-out type door), a freezing room 3 having a door 31 (drawer type door) and a door 32 (drawer type door), a vegetable compartment 4
Is provided with a door 41 (pull-out type door). Containers 34 and 35 are provided in the freezer compartment 3, and ice and frozen foods are put in the container 34, and frozen foods and the like are put in the container 35.

Door packings 22, 38, 33, 42 are provided on the inner end of each door over the entire circumference.
A receiving portion 11 (the upper end of the box body of the refrigerator 1) that forms a receiving surface of each door packing, a receiving portion 12 (an end portion of a partition that divides the refrigerating compartment 2 and the freezing compartment 3), and a receiving portion 13 (the door 31). And the receiving part of the door 32), the receiving part 14 (the end of the partition that divides the freezer compartment 3 and the vegetable compartment 4), the receiving part 15 (the bottom end of the box body of the refrigerator 1), and the door packing are closely attached. The cool air is prevented from leaking to the outside, and the cool air is circulated in the order of, for example, the freezing compartment 3, the refrigerating compartment 2, the vegetable compartment 4, etc. to maintain each compartment at an optimum temperature.

Reference numeral 51 is a compressor for compressing the refrigerant, 52 is an evaporator for evaporating the refrigerant to generate cold heat, and 53 is a fan for circulating cold air.

FIG. 9 shows a refrigerating cycle of the refrigerator 1.
As shown by the arrow, the refrigerant compressed by the compressor 51 first flows to the dip condenser 54 used for evaporation of drain water, and then to the main condenser 55, and then flows upward to expose the outer surface of the outer box of the refrigerator 1. After passing through the crest condenser 56 for preventing sticking, the receiving portions 11 to 15 and 16 at the outer box opening end
After flowing through a pipe line 60 (a mechanism for heating) provided in the above, and after evaporating in the evaporator 52 via the capillary tube 57 to cool the inside of the room, it is compressed again by the compressor 51.

In this way, the pipe line 60 embedded in the frontage of the main body is heated about 5 to 7 ° C. higher than room temperature to radiate heat to prevent the occurrence of dew condensation on the surfaces of the receiving portions 11 to 15, 16. ing.

[0007]

However, in the conventional refrigerator 1, as shown by the arrow in FIG. 8, the cold air in each room is heated by hitting the receiving parts 11 to 15, 16 to which the cold air is heated. There was a problem that the energy efficiency was lowered.

An object of the present invention is to provide a refrigerator in which cold air in each room does not substantially hit the heated receiving portions 11 to 15, 16 to improve the energy saving effect. is there.

[0009]

According to the present invention, a partition is used to divide the inside of a box into a plurality of chambers to which cold air is supplied, and a dedicated door that can be opened and closed is provided on the front surface of each chamber. In a refrigerator provided with a door packing that is in close contact with the receiving portion formed at the tip of the door of the middle partition, the refrigerator is provided with a structure for heating the receiving portion, and a member that suppresses cold air in the room from hitting the receiving portion. It is placed at a position in the room where the wall temperature of the partition becomes negative when is closed.

Further, the member for suppressing the cold air in the room from hitting the receiving portion is a belt-shaped member having one end and the other end,
One end is fixed to a position where the wall temperature of the partition is negative.

Further, the fixed position at one end is near the position where the wall temperature of the partition wall changes from positive to negative.

Further, the door is a drawer type door and / or a swing-out type door.

[0013]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 7, portions designated by the same reference numerals as those in FIGS. 8 and 9 have the same functions as the portions having the same reference numerals described in FIGS. 8 and 9.

In FIG. 1, the refrigerator 1 has doors 21, 3
Door packing 22, provided on each of 1, 32, and 41,
The receiving portions 11 to 1 forming the receiving surfaces of 38, 33, and 42.
5, 16 and the door packing are brought into close contact with each other to prevent cool air from leaking to the outside, and the temperature of the wall surface of the receiving portion itself is increased from the receiving surface of the receiving portion heated by the pipe line 60 toward the room. One end is fixed to a place where it changes from positive to negative or a place further inside this place (a place indicated by L in FIG. 1), and the other end is brought into contact with a part of the inner surface of each door, or other The strip-shaped second packings (members) 23, 36, 37, 43 whose ends are brought into contact with a part of the inner surface of each door and are brought into contact with one ends of the containers 34, 35, respectively, are provided to warm the cold air in the room. It is suppressed that the received receiving portions 11 to 15, 16 are hit.

The second packing 23 has its one end fixed to a portion of the receiving portion 11 and the receiving portion 12 that has entered the interior by L from the receiving surfaces, and the other end contacts a part of the inner surface of the door 21. The second packing 36 has one end fixed to a place where the receiving surface of the receiving portion 12 and the receiving portion 13 enters the room by L, and the other end contacts a part of the inner surface of the door 31. In addition, one end of the container 34 is contacted.
The second packing 37 and the second packing 43 are similar to the second packing 36.

FIG. 2 is an explanatory view showing a state in which each door of the refrigerator 1 shown in FIG. 1 is opened or pulled out. The second packings 23, 36, 37, 43 are provided over the entire circumference of each door opening.

FIG. 3 is an enlarged cross-sectional explanatory view of the main part of A of FIG.

FIG. 4 is an enlarged cross-sectional explanatory view of the principal part of BB of FIG.

In FIG. 3, the second packing 36 is located at a portion where the temperature of the receiving portion 12 itself changes from positive to negative from the receiving surface 12A of the receiving portion 12 whose front end is heated toward the room, or from this portion. Further, one end of the second packing 36 is fixed to a location in the room (a lower surface of the receiving portion 12 which is separated from the receiving surface 12A toward the room by L), and the second packing 3
The other end of 6 is in contact with one end 34A of the upper portion of the container 34, or is provided at a distance of at most 5 mm. In this way, the cold air in the room is prevented from substantially hitting the heated tip of the receiving portion 12.

In FIG. 4, in the second packing 36, the temperature of the receiving portion 16 itself rapidly increases from the receiving surface 16A of the receiving portion 16 (the end portion of the side wall of the refrigerator 1) of which the front end is heated toward the room. A portion that changes or a portion that is further indoors than this portion (the receiving portion 1 that is L away from the receiving surface 16A toward the room)
The inner surface of 6) has one end of the second packing 36 fixed, and the other end of the second packing 36 is the side wall 3 of the container 34.
It is provided so as to be in contact with a rib 34C formed at one end of 4B or separated by at most 5 mm. In this way, the cold air in the room is prevented from substantially hitting the heated tip of the receiving portion 16.

FIG. 5 shows a distance (mm) from the receiving surface (for example, receiving surface 12A) of the receiving portion (for example, receiving portion 12) whose front end is heated to the inside of the room and the temperature of the receiving portion itself (wall surface). temperature)
It is a graph which shows the relationship of (degree C). The temperature of the receiving surface is pipe 6
Since the surface temperature of 0 is about 35 ° C, there is a temperature gradient of about 33 ° C, but about 10 mm to about 30 mm from this receiving surface.
When entering the room, the temperature of the receiving part changes from positive to negative, about 30 m
It becomes about -10 degreeC to about -20 degreeC in m or more. If one end of the second packing (for example, the second packing 36) is fixedly provided at a position such as the surface of the receiving portion that is separated from the receiving surface of the receiving portion by 30 mm or more toward the room, the cold air in the room is heated. Since the second packing itself is not heated by heat conduction from the receiving portion while not hitting the tip of the receiving portion, an energy saving effect can be achieved.

As a result of a test using a household refrigerator [SR-45SK manufactured by Sanyo Electric Co., Ltd.] having the configuration shown in FIGS. 1 to 4, there is an energy saving effect of about 2 (kWh / month). Admitted.

In the above-described embodiment, the example in which the second packing is provided over the entire circumference of each door opening as shown in FIG. 2 is shown, but a part thereof may be omitted. Therefore, the present invention includes the case where the second packing is not provided over the entire circumference of each door opening.

A specific example of the case where the second packing is not provided over the entire circumference of each door opening is, for example, the receiving portion 1 shown in FIG.
Second packing 3 provided at 6 (tip of side wall of refrigerator 1)
Part or all of 6 can be omitted in a range that does not significantly affect energy saving.

In FIG. 6, the second packing 2 is provided on the inner peripheral portion of the door 21.
The example of the other refrigerator of this invention which provided 3 is shown. The refrigerator 1 shown in FIG. 6 is the same as the refrigerator shown in FIG. 1 except that the second packing 23 is provided on the inner peripheral portion of the door 21.

FIG. 7 is an explanatory cross-sectional view of essential parts showing the state of the second packing 23 when the door 21 of the refrigerator 1 shown in FIG. 6 is closed.

As shown in FIG. 7, one end of the second packing 23 is fixed to the inner peripheral portion of the door 21, and the other end of the second packing 23 has a receiving portion 11 whose front end is heated. From the receiving surface 11A toward the room, where the temperature of the receiving portion 11 itself suddenly changes, or a position further inside the room than the receiving surface 11A (the receiving portion 11 separated from the receiving surface 11A toward the room by L).
Bottom surface) or separated by at most 5 mm. In this way, the cold air in the room is prevented from substantially hitting the heated tip of the receiving portion 11.

In the present invention, the second packing may be provided at the door inner peripheral portion or the door opening portion, or may be provided at both the door inner peripheral portion and the door opening portion.

Since the present invention is not limited to the above embodiments, various modifications can be made without departing from the spirit of the claims.

[0030]

In the refrigerator of the present invention, the second packing is provided at a specific position so that the cold air in the room does not hit the heated receiving portion, so that a high energy saving effect can be achieved.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view of a refrigerator according to the present invention.

FIG. 2 is an explanatory view showing a state where the door of the refrigerator of the present invention shown in FIG. 1 is opened or pulled out.

FIG. 3 is an enlarged cross-sectional explanatory view of a main part of A of FIG.

FIG. 4 is an enlarged cross-sectional explanatory view of a main part of B-B in FIG. 1.

FIG. 5 is a graph showing the relationship between the wall temperature and the distance from the receiving surface of the receiving portion whose tip has been heated.

FIG. 6 is a cross-sectional explanatory view of a main part of another refrigerator of the present invention including a second packing on the inner peripheral portion of the door.

FIG. 7 is a cross-sectional explanatory view of the essential parts showing the state of the second packing when the door of the refrigerator shown in FIG. 6 is closed.

FIG. 8 is a cross-sectional explanatory view of a conventional refrigerator.

9 is an explanatory diagram illustrating a refrigeration cycle of the refrigerator illustrated in FIG.

[Explanation of symbols]

1 refrigerator 2 refrigerating room 3 freezer 4 vegetable room 21, 31, 32, 41 doors 34, 35 containers 34A container end 34B Side wall of container 34C container ribs 22, 32, 33, 42 Door packing 23, 36, 37, 43 Second packing 11, 12, 13, 14, 15, 16 Receiver 11A, 12A, 16A Receiving surface 51 compressor 52 Evaporator 53 fans 54 dip condenser 55 Main capacitor 56 Crest Capacitor 57 capillary tubes 60 pipelines

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) F25D 23/06

Claims (2)

(57) [Claims] 1. A partition is used to divide the inside of the box into a plurality of chambers to which cold air is supplied, and a dedicated door that can be opened and closed is provided on the front surface of each chamber, and the door is configured at the door-side end of the partition. In a refrigerator provided with a door packing that adheres closely to the receiving part, the configuration is provided for heating the receiving part, and one end and the other end for suppressing cold air in the room from hitting the receiving part are provided.
A refrigerator characterized by fixing the one end of the belt-shaped member to a position in the room where the wall temperature of the partition changes from positive to negative when the door is closed. 2. The refrigerator according to claim 1, wherein the door is a drawer type door and / or a swing-out type door.