JPS6186562A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a refrigerator that supplies cool air into a storage chamber to cool the interior of the storage chamber, and particularly relates to a refrigerator in which compartments are formed within the storage chamber.

(b) Prior Art Conventional refrigerators of this type have compartments that are cooled to various temperatures to accommodate the diversification of stored foods. Some methods of cooling the compartments directly introduce cold air, while others indirectly cool the interior through the walls of the compartments in order to prevent the stored food from drying out. In this type of indirect cooling method, cool air flows along the top surface and left and right sides of the compartment, but when cold air is supplied to the top of the compartment, the cold air stagnates and reaches the top of the compartment. It has the disadvantage of generating frost.

(C) Problems to be Solved by the Invention To solve these drawbacks, for example, as in Japanese Utility Model Publication No. 45-23381, cool air is not supplied to the upper surface of the compartment, but cool air is distributed from the rear surface to the left and right. In this type of refrigerator, the cold air outlet to the storage compartment is usually located in the back wall, so Publication of Utility Model Publication No. 45-23381 also provides a cold air distribution space at the rear of the compartment. However, in such a configuration, the depth of the compartment is definitely reduced by the size of the distribution space, and there is also the problem that frost formation occurs in the distribution space due to a small amount of cold air remaining in the distribution space. .

In order to solve this problem, the present invention forms a groove (2n) at the rear of the upper surface of the case (lO) constituting the compartment, and insulates the inside of this groove (2η). The material (a) is provided to form a cold air passage f28) extending from side to side, and this cold air passage (with the cold air outlet (c) facing 281, case 00) is connected to the left and right cold air passage c30.
).

(Features) According to the present invention, distribution of cold air can be achieved by simply reducing the volume of the rear upper corner of the compartment.Furthermore, the cold air passage is made of a heat insulating material, and frost formation due to accumulation of cold air does not occur. It is something.

(F) Embodiment An embodiment will be explained with reference to the drawings. FIG. 6 shows a refrigerator (1) as an example. (2) is a heat insulating box body that opens at the front, and (3) is a heat insulating partition wall that partitions the inside of the refrigerator, with a freezer compartment (4) formed above it. (5) is a partition plate located at the inner lower part of the side, and below which is a vegetable compartment (7) consisting of containers (6) and K. Partition wall (3) and partition plate (5
) is further divided into upper and lower sections by a heat-insulating partition plate (8), and the lower part thereof is used as a refrigerating room (9) which is cooled to a cold R temperature such as +3°C. Partition board (8) and partition wall (3
) is an ice greenhouse QZI as a compartment consisting of a case (101, compartment board (8), and transparent inner door 01) that opens forward and downward and is attached to a compartment board (8).
is formed. A cooling chamber α3) is formed within the partition wall (3), and a cooler (141) included in the refrigeration cycle is housed therein. At the rear of the cooling chamber OJ is a duct f151 ( 16) is formed, and
A blower α power is provided. The blower 07) is operated and sends out cold air from the cooler Q41 toward the duct α90G.
Discharges from duct (19 to freezer compartment (4). Duct ae
The cold air is discharged from the discharge port αa opened in the back wall of the insulating box body (2) at the rear of the case (10), but this discharge port OQ is connected to a tamper thermometer (11) that detects the temperature inside the refrigerator compartment (9). Opening/closing controlled.

The partition plate (8) is located at the rear of the front member provided on the lower opening edge of the partition wall (3) from side to side. Also, Qv(2
21 (c) and (24) are insulating doors that freely open and close the openings of the freezer compartment (4), the front of the ice room 00), the refrigerator compartment (9), and the vegetable compartment (7), respectively.

FIG. 1 shows an enlarged side sectional view of the ice chamber 03, and FIG. 2 shows a front sectional view thereof. Furthermore, Fig. 3 shows an exploded perspective view of the ice chamber (+3). (25) is a damper thermo cover, which has a heat insulating material inside, and is installed between the case 00) and the back wall of the heat insulating box body (2). It has a side discharge pipe (9) that allows the cold air flowing out from the discharge port 0Q to directly flow down into the refrigerator compartment (9), and a discharge port c35 that discharges the cold air forward. Case 0 is located on the rear upper surface of the case (10).
0) A groove is formed over the entire width, and a molded heat insulating material (2 sickles can be stored in it) that is open upward and to the left and right constitutes a cold air passage (2) for distribution that extends from side to side within this groove (2). As shown in FIG. 2, the left and right side surfaces of the case 00 form a cold air passage 001 which is spaced from both sides of the inner surface of the heat insulating box (2) and communicates with the cold air passage 12 (towards). At this time, the opening edge and back surface of the case (101) are in contact with the lower surface of the partition wall (3) and the inner surface of the insulating box (2).
), and has a projection Gυ projecting upward in the center. An operating arm (32) is rotatably fixed to this protrusion OD, and a tamper plate θJ is rotatably held in a long hole (2) formed at the rear end of this arm C33. The damper plate C (4) consists of the opening/closing plate (10) located at the innermost part and the closing plate (4) at the Vt position in front of it.
1) are integrally formed. Damper thermo cover C
The discharge port (c) of No. 9 opens at the center of the cold air passage (28), and the opening/closing plate (40) is located in the cold air passage (28+) just before the discharge port (35+). The knob q21 at the front end of the arm 64 is exposed on the back side of the inner door (lυ, and by operating this knob (42) left and right) the discharge port <3
51, the amount of cold air flowing into the cold air passage (c) can be adjusted. In addition, a rib (431) projecting upward is formed on the front side edge of the groove C71 to prevent cold air from flowing into the upper surface of the case 00, but a notch G44) is formed for movement of the arm C33. Correspondingly, a notch (29A) is also formed in the heat insulating material (29). Immediately before this notch (1.1), the closing plate (41) is positioned (6).

This closing plate (41) always closes the notch (!14) even if the arm C32 moves left and right. This occlusion plate (41)
Since the cold air does not flow into the upper surface of the case (10) due to the lip (43), by retaining the cold air I'+iJ here, frost formation on the upper surface of the case (10) is prevented. (451 is This is a cover that closes the opening on the upper surface of the molded heat insulating Murayama.

Figures 4 and 5 show enlarged views of the side and front parts of the partition plate (8), respectively. (46) and (47) are FFr
% In the outer box and inner box that make up the box body (2), (48) is the insulation material filled between the two boxes (461 (, 171). Dropped top plate 60+
, consists of a lower plate 511 and both plates (molded heat insulating material etc. 2 loaded between 501511).The heat insulating material 6z is provided along the upper surface of the lower plate 61), and is spaced from the upper plate 60) by at least O' on the left and right. exists. In addition, the lower plate 5D has a plurality of through holes closer to the center than the edges, and has a heat insulating material (through holes 64 communicating with the above-mentioned intervals corresponding to the through holes 6 of 52). have. Furthermore, a plurality of through holes 69 are formed on both side edges of the upper plate. These through holes connect the cold air passage (to) with the upper plate side and the space between the heat insulating material 62, and these through holes Sol (54153) connect the partition plate (8).
A cold air passage connecting the cold air passage q and the refrigerator compartment (9) is configured inside. The case GO) is fixed to the upper edge of the sloped surface of the upper plate l50) inside the through holes, and the cold air passage 6
) is due to the shape of the slope part (8A) around the partition plate (8),
It slopes inward from the through hole 65) and descends, wrapping around the lower surface of the upper plate 60).

The partition plate (8) assembled in this 4-P is installed approximately horizontally above the front member 00 by engaging the edges of both 11111 between the grooves formed on the inner box (49 cars 1111 wall). However, since the central horizontal part is recessed than the edge, it is placed at the rear of the front member (201). Therefore, the front member (A)
In addition to making effective use of the dead space in the rear chamber,
As long as the partition plate (8) is recessed and there is enough space above the case (1o) to accommodate the arm Oa, the upper surface of the case OQ can be brought close to the lower surface of the partition wall (3) without forming a cold air passage. The internal volume of the ice chamber (12) will also be expanded.

The front member has a stepped portion (20A) formed at the rear of the upper surface and one or more ribs φ projecting rearward on the rear surface. On the other hand, at the front end of the lower plate 6υ corresponding to the inclined part (8A) of the partition plate (8), one or more supporting walls υ extending vertically are provided in a protruding manner corresponding to the lip 1. By placing the support wall f+1) in contact with the lip (60), the front part of the partition plate (8) is prevented from sagging due to the weight of stored items or its own weight, and the rear face or stepped part of the front column is prevented. (20A) and the inclined portion (8A) of the partition plate (8). At this time, the leading edge of the upper plate (', 01) of the partition plate (8) extends to the upper part of the stepped part (2OA) of the front member (4), covers it with a gap therebetween, and furthermore A through-hole hole is formed. Also, there is a gap between the door (221 and the inner door Uυ).
The upper end is the suction hole tti3 formed in the front part of the lower surface of the partition wall (3).
1 communicates with the cooling chamber (13), and the lower end communicates with the refrigerator (9) through a through hole fi, and a series of cold air return passages (6
4) It consists of ℃. Here, (f) is the cold air suction hole on the freezer compartment (4) side.

Next, cold air circulation will be explained. The cold air blown out from the discharge port C35+ of the damper thermo cover C25) flows into the cold air passage, collides with the molded insulation Murayama front wall, and is distributed to the left and right. At this time, due to the presence of the molded heat insulating material 9, frost does not form on the outer surface of the groove □□□ of the case (10). The cold air flowing left and right in the cold air passage Q (to) flows into the cold air passage field on the side of the case (10) as shown by the arrow in Fig. 2, descends, and flows into the cold air passage 6) through the warm through hole 6. . Due to the inclined shape of the passage (56), the cold air that has flowed into the cold air passage (611) does not immediately fall υW from the through hole L531 (!il) at the end of 9111, and most of it is well guided toward the center. (The numbers inside 12 are both 1 of case (10)
111++ surface and the upper plate (50) of the partition plate (8). Here, by not circulating cold air on the upper surface of the case 00, prevention of frost formation on the upper surface and expansion of the internal volume of the ice chamber uz can be achieved, but the cooling effect may be insufficient. Therefore, a through hole (60) is formed in the wall wall side part corresponding to the cold air passage C28) of the molded heat insulating material, and a corresponding through hole (67) is bored in the case (10). The cold air in the cold air passage Q (to) is directly introduced into the ice room a2, albeit in a small amount, and the refrigerator (1) is installed at a temperature of 0 in the ice room.
To speed up the cooling speed of No. 2 and to eliminate insufficient cooling due to indirect cooling.

Also, at this time, the cold air flowing in from the transparent hole η flows into the ice chamber (12) from both sides and has a velocity to the left and right, so it flows forward along the inside of the side surface of the case (10).
It flows to wrap around the stored food. Furthermore, since the amount of cold air flowing in is small, the drying of the stored food can be suppressed to at least one person. Through such indirect and direct cooling, ice greenhouses (1
3 is kept cooled to freezing storage temperature. Ice temperature storage FI here
1. The temperature is below freezing, such as 0°C to -2°C, but it is on the verge of freezing meat and vegetables. By storing food at this freezing temperature, bacteria can grow inside without freezing. It can be stored for a relatively long period of time (about one week in experiments).

The cold air flowing between the cold air passages flows down into the refrigerator compartment (9) through the through holes (53+54), and circulates within the refrigerator compartment (9) and around the container (6) together with the cold air from the side outlet (26). After exchanging heat, the air passes through the space between the partition plate (8) and the front member (a) and rises along the outer surface of the inner door 01), as shown by the arrow in Figure 5, and opens the cold air return passage. Go up and open the suction hole (631
Returns to cooling chamber 0.3). An upward air current is generated near the door (2 or 2) due to heat leakage from outside the refrigerator, and this cold air return operation is also achieved smoothly.In addition, an upward air current is constantly generated in front of the inner door αυ. Because there are
The transparent inner door 0υ will not fog up due to condensation, and the visibility inside the low-temperature ice room (12) will always be maintained well.

Since the damper thermometer (1!l) senses the temperature of the refrigerator compartment (9), changing the set temperature of the refrigerator compartment (9) will also change the amount of cold air flowing into the cold air passage. The temperature inside the ice room (12+) can be maintained at a predetermined ice temperature storage temperature by moving the redamper plate c34) left and right and adjusting it appropriately.

(G) Effects of the Invention According to the present invention, the compartment formed in the storage chamber is indirectly cooled from its wall surface and cold air is not supplied to the upper surface, so that bending due to cold air retention on the upper surface of the compartment does not occur. Also,
The cold air from the rear discharge port is distributed through a passage at the rear upper corner of the compartment, and since this passage is made of heat insulating material, frost does not form on the passage, and the depth of the compartment is Just before the outlet (in this example, there is a damper thermo cover, so in this case, just before the discharge port of the damper thermo cover)
It can be expanded to.

[Brief explanation of drawings]

Each figure shows an embodiment of the present invention, and FIG. 1 is a side sectional view of the ice chamber, FIG. 2 is a front sectional view of the same, FIG. 3 is an exploded perspective view of the ice chamber components, and FIG. FIG. 2 is an enlarged view of the main part of FIG. 2, FIG. 5 is an enlarged view of the main part of FIG. 1, and FIG. 6 is a schematic sectional view of the refrigerator. (9)...Cold room, (IZ...Ice greenhouse, (27)
1...concave groove, C! (to)...molded insulation material, (2)
...Discharge port, (281(30)(5fi)...Cold air passage.

Claims (1)

[Claims] 1. In a refrigerator that supplies cold air from a cooler into a storage chamber to cool the inside of the storage chamber, a compartment formed in the upper part of the storage compartment, a cold air outlet located at the rear upper part of the compartment, and the compartment a heat insulating material provided in a groove formed in the rear part of the upper surface of the chamber, facing the cold air discharge port and forming a cold air passage extending from side to side; A refrigerator comprising a cold air passage communicating with a storage room below the compartment.