JPH02130379A - Refrigerator - Google Patents

Abstract

PURPOSE:To unify temperature in a cold storage chamber by a method wherein circulating cold air is supplied from the air passing ports of an upper layer duct into a lower layer duct while the ratio of the opening area of the air passing ports at the downstream side of the duct is made larger than the same at the upstream side of the duct. CONSTITUTION:The circulating cold air of a refrigerating device 21 is supplied from the air passing ports 25, 25,... of an upper layer duct 23 into a lower layer duct 24 while the ratio of the opening area of the air passing ports 25, 25,... at the downstream side of a duct 22 is made larger than the same at the upstream side of the same duct 22. As a result, the circulating cold air is supplied from the upper layer duct 23 at the upper part of an inner case 5 for a cold storage chamber into the lower layer duct 24 and the cold air supplying amount of the lower layer duct 24 is increased at the downstream side of the duct in accordance with the ratio of opening area of the air passing ports 25, 25,... and the like whereby the flow rate of the cold air in the downstream side of the duct or a returning flow passage 4d is compensated by the amount of increasing of the cold air at the downstream side of the duct. Accordingly, a temperature in the inner case 5 of the cold storage chamber or a temperature in the cold storage chamber 5a may be unified.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention provides an inner box for a refrigerating compartment that is provided with a gap inside a refrigerator main body, and that the upper and side parts of the inner box for a refrigerating compartment are and a refrigerator in which circulating cold air from a refrigeration device is sequentially supplied to the gap at the bottom.

(b) Prior art In the conventional refrigerator described in Utility Model Application Publication No. 60-93882, which precedes the present invention, the cold air generated in the refrigeration device is
It is sequentially supplied to the gaps at the top, side, and bottom of the inner box for the refrigerator compartment, and then returned.

However, in this type of conventional refrigerator, although the cold air of the refrigeration device has a large amount of cooling heat in the supply start flow path, the amount of cooling heat held in the return flow path decreases, resulting in a low cooling function. Therefore, there is a drawback that the inner box portion located in this return/recirculation path is not cooled uniformly with the upper part of the inner box, and therefore the temperature of the refrigerating compartment is also non-uniform.

(c) Problems to be Solved by the Invention The present invention solves the above-mentioned drawbacks and provides a refrigerator with a uniform temperature in the refrigerating compartment and high thermal efficiency.

(d) Means for Solving the Problems The present invention provides an inner box for a refrigerator compartment with a gap inside the refrigerator body, and a space between the top, side, and bottom of the inner box for the refrigerator compartment. The system is configured to sequentially supply circulating cold air from a refrigeration system, and a double duct section is formed in the upper gap to form an upper layer and a lower layer, and the circulating cold air is passed from the vent of the upper layer duct section to the lower layer duct section. In addition, the vent is formed so that its opening area ratio is larger in the downstream part of the duct part than in the upstream part.

(e) Effect 1 According to the present invention, the N-ring cold air of the refrigeration system is supplied from the upper layer duct at the top of the inner box for the refrigerator compartment to the lower layer duct, and the amount of cold air supplied from the lower layer duct is controlled through the vent. The amount of cooling air increases on the downstream side in accordance with the opening area ratio of The temperature of the inner box and even the refrigerator compartment becomes uniform.

(f) Example Next, one embodiment of the present invention will be described.

In Figure 1, (1) is the refrigerator body, and its outer box (2
) is filled with a heat insulating material (3) (described later), and an inner box (5) for the refrigerator compartment is arranged with a gap (4) (described later) in the inner box of this outer box (2). ing. (Number 6 (7) is a door body that closes the front opening of the inner box (5) for the refrigerator compartment, and has handles (8) and (9), respectively, and the end opposite to the handles (8) and (9). It is rotatably supported on the refrigerator body (1). (10) is a front plate having an operation panel part (11), which is used to ventilate the machine room (12) (to be described later) on the back side. A large number of through holes (13), (13), etc. are formed. (14) (14) are supporting legs for the refrigerated original document #(1), and (15) is a drain discharge vibrator.

In Figures 2, 3, and 4, (16) is the compressor installed in the machine room (12), and (17) is the compressor (1).
The condenser (18) connected to the downstream side of the condenser (18) is a fan installed in the machine room for cooling the pseudo-condensing type (17) and the compressor (16). (19) is t￥! A cooler (20) is a cold air circulating fan adjacent to the cooler (19). Each of the above momentum (16) (17) (18) (1
9), (20), etc., form a refrigeration device (21). In the refrigeration system (21), the circulating cold air is passed from the duct part (22) to the upper gap (4a) of the inner box (5) for the refrigerator compartment.
, the back gap (4b), the side gap (4C) and the bottom gap (4d), and then returned.

The duct part (22) forms double duct parts (23) and (24) with an upper layer and a lower layer, and
The circulating cold air is passed through the vent (25) of the upper duct part (23) (
25)... to the lower duct part (24), and the vents (25) (25)... The side part (22d) is formed larger than the upstream part (22u).

Specifically, the vent holes (25) (25) are formed to gradually become larger toward the downstream portion (22d) of the duct portion (22). The duct part (22)
As shown in Figure 6, its vent, <26)
(26)... is the vent (26) of the downstream part (22d)
Figure 7 (a)
As shown in (b), the same size ventilation holes (27) (2
7) It is also possible to gradually increase the density of the lower duct portion (24) toward the downstream portion (22d) and to form a curved shape in the expansion direction of the lower duct portion (24).

In the refrigerator, the circulating cold air of the freezing device (21) is supplied from the upper layer duct section (23) at the upper part of the inner box (5) for the refrigerator compartment to the lower layer duct section (24), and also from the lower layer duct section (24).
The amount of cold air supplied in 24) increases on the downstream side in accordance with the opening area ratio of the vents (25), (25), etc.)
, the cooling heat amount of the downstream side and the return flow path (4d) is compensated for by the increased amount of cold air on the downstream side. temperature becomes uniform.

(G) Effects of the Invention Since the present invention is constructed as described above, the circulating cold air of the refrigeration system is supplied from the upper duct section at the top of the inner box for the refrigerator compartment to the lower duct section, and the cold air of the lower duct section is also supplied to the lower duct section. The supply amount will increase on the downstream side in accordance with the opening area ratio of the vent, and the amount of cooling heat on the downstream side and in the return flow path will be compensated for by the increased amount of cold air on the downstream side. Therefore, the temperature of the inner box for the refrigerator compartment becomes uniform, and therefore, a refrigerator with uniform temperature of the refrigerator compartment and high thermal efficiency can be provided.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment of the present invention, with Figure 1 being a front view, Figure 2 being a vertical cross-sectional view as seen from the front, Figure 3 being a cross-sectional view, and Figure 4 being a side view. FIG. 5 is a vertical cross-sectional view as seen from above, and a perspective view of the main constituent members. FIG. 6 is an explanatory diagram of the main part of another embodiment, and FIGS. 7(a) and 7(b) are explanatory diagrams of the main part of still another embodiment. (1)... Refrigerator body, (4)... Gap, (4a)
...Top gap, (4C)...Side gap, (4d)
・Bottom gap, (5) ・Inner box for refrigerator compartment, (21)・
... Refrigeration device, (22) ... Duct part, (22d)
・・Downstream site, (22u) ・・Upstream site, (23
)...Upper layer duct part, (24)...Lower layer duct part,
(25) (26) (27)...Vent. Figure 4

Claims (1)

[Claims] 1) An inner box for a refrigerator compartment is arranged with a gap inside the refrigerator body, and the circulation of the refrigeration device is sequentially arranged in the gaps at the top, side, and bottom of the inner box for the refrigerator compartment. A double duct section is formed in the upper gap between the upper layer and the lower layer, and the circulating cold air is supplied from the vent of the upper layer duct section to the lower layer duct section. A refrigerator characterized in that the opening area ratio of the vent is formed larger in the downstream part of the duct part than in the upstream part.