JPH0641103Y2 - refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a refrigerator in which a storage box is disposed with a required space interposed in a heat insulating box, and the storage box can be cooled uniformly.

Conventional technology Vegetables, fruits, and other fresh foods such as meat and fish (hereinafter referred to as "ingredients") are generally stored in the refrigerator when they are stored frozen in the refrigerator for a long period of time or when the frozen foods are gradually thawed. It is necessary to keep the temperature change small and to control the evaporation of water from food.

A refrigerator that uses brine (antifreeze) as a cooling medium is known as a device that responds to this request. This is because the brine stored in the brine tank is cooled by an evaporator connected to the refrigeration system, and this cooled brine is circulated in a cooling pipe arranged outside the storage box for storing food, thereby It is for cooling.

However, the refrigerator using the brine described above has a drawback that the cooling mechanism of the brine, the piping, etc. are complicated and the manufacturing cost increases. Further, in order to perform the defrosting operation in this refrigerator, it is necessary to warm the brine to a predetermined temperature and circulate it in the cooling pipe. In this case, not only a large amount of heat is required to heat the brine, but also the circulation of the brine raises the internal temperature more than necessary, which causes a serious problem that the freshness of the stored food material is deteriorated.

Therefore, as a means for solving the above-mentioned problems, there is, for example, a device "perishable food storage device" devised in Japanese Utility Model Publication No. 63-147678. This device is provided with a storage box for storing foodstuffs inside a storage room having a heat insulating structure via a required space. Further, the space is composed of a horizontal partition plate and a vertical partition plate, and an air passage on the casing side for circulating the cool air without contacting the storage box, and an air passage on the storage box side for circulating the cool air in contact with the storage box. Is defined in. Then, the cool air cooled by the evaporator disposed in the air passage on the casing side is first allowed to flow down the air passage on the casing side to be dropped to the bottom of the storage chamber, and then the air passage on the storage box side is raised. The storage box is configured to be cooled by performing heat exchange with the storage box.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the fresh food preservation apparatus described above, the cooled cold air is lowered to the bottom of the storage chamber, and then the storage box is cooled when the cold air rises. However, once the cool air is lowered to the bottom of the storage room, the cold air stays without rising, the lower part of the storage box is overcooled, and the upper part (ceiling surface) of the storage box is insufficiently cooled, and the storage box It was difficult to evenly cool the whole. For this reason, it takes a considerable amount of time to cool the inside of the refrigerator until it reaches the set temperature (the storage temperature of the food material), and thus there is a drawback that the power consumption increases. Further, there is also a problem that a partial temperature difference occurs in the storage due to partial cooling of the storage box, and some foodstuffs deteriorate in freshness at an early stage.

Purpose of the invention This invention has a storage box inside the above-mentioned heat insulation box body.
In view of the above-mentioned drawbacks inherent in a refrigerator having a heavy structure, it is proposed to preferably solve this problem, and to provide a refrigerator having a simple configuration that can achieve uniform temperature inside the refrigerator. With the goal.

Means for Solving the Problems In order to overcome the above-mentioned problems and preferably achieve an intended purpose, the present invention provides an insulating box body having an opening and an insulating door provided in the opening, and A storage box that is disposed inside through a required space and that has an opening that opens corresponding to the opening, a cooler that is provided above the storage box in the heat insulating box, and that is adjacent to the cooler. In a refrigerator including a blower fan installed, a space defined above the storage box is defined into a first chamber in which the cooler is arranged and a second chamber in which the blower fan is arranged. A compartment having an opening for communicating both chambers, a cold air passage defined between a bottom surface of the cooler arranged in the first compartment and a ceiling surface of the storage box, and the first compartment in the compartment. And a through hole formed at a position corresponding to the cold air passage of Part of the cold air circulated in the first chamber is circulated in the first chamber and part of the cold air circulated in the first chamber is introduced into the second chamber through a hole in the wall. To do.

Embodiments Next, a refrigerator according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments. Figure 1 shows
The vertical side view of the vertical refrigerator according to the preferred embodiment of the present invention,
FIG. 2 is a vertical sectional front view of the refrigerator shown in FIG. In addition, in the embodiment, a refrigerator in which two storage boxes are arranged in a vertical relationship in a heat insulating box will be described, but the present invention is not limited to this, and the number of storage boxes may be one or more. May be

As shown in the drawings, the refrigerator 10 is installed in an outer box 12 having rectangular openings 12a, 12a which are vertically spaced apart from each other by a predetermined distance and which are largely open to the front side, and which are held in the outer box 12 with a required gap. Also, the inner box 14 that opens to the front side as well and both boxes 12, 1
It has a heat insulating box body 18 composed of a heat insulating material 16 such as urethane foam filled between the four. Inside the inner box 14 in the heat insulating box 18, the inner wall and a required space 20 are held,
An upper storage box 22 and a lower storage box 24, which are stacked via shielding plates 38, 38 described later, are arranged. In addition, storage boxes 22, 24
Is made of a heat conductive metal plate such as stainless steel.

As shown in FIG. 2, the inner bottom surface of the inner box 14 has a support member projecting from the bottom surface to a predetermined height at the center in the width direction.
The lower storage box 24 is placed on the support member 19, and the bottom space 44 is provided between the lower storage box 24 and the bottom surface of the inner box 14.
Is defined. As shown in FIG. 3, a pair of storage box guides 3 each having an L-shaped cross section are provided on the inner rear surface of the inner box 14.
4, 34 are arranged opposite to each other with a lateral width dimension of the storage box 22 (24). The guides 34, 34 extend over substantially the entire length of the inner space of the inner box 14 in the vertical direction, and the back portions of the storage boxes 22, 24 are commonly fitted between the guides 34, 34. ing.

Rear of the storage boxes 22 and 24, storage box guides 34 and 34, and inner box
A rear passage 36 is formed between the inner wall of 14 and the inner wall of 14 to cool the storage boxes 22 and 24 while lowering the cool air as described later. Further, the width dimensions of the storage boxes 22 and 24 are set to be smaller than the internal dimensions of the inner box 14, and as shown in FIG.
Storage boxes 2 and 24 on both sides of the storage boxes 22 and 24 while raising cold air.
Side passages 46,46 are defined that guide the 2,24 to cool. That is, the space 20 defined between the inner wall of the inner box 14 and the outer walls of both storage boxes 22, 24 is a rear passage 36, a bottom space 44,
It is composed of side passages 46, 46.

Both of the storage boxes 22 and 24 have rectangular openings 22a and 24a that are open to the front, corresponding to the rectangular openings 12a and 12a formed in the heat insulating box body 18. Further, as shown in FIG. 2, on the front surface of the heat insulating box 18, there is arranged a heat insulating door 26 corresponding to each opening 12a opened in the heat insulating box 18 so as to openably and closably close the opening 12a. It is set up.

A space 31 is defined between the inner ceiling surface of the inner box 14 and the ceiling surface of the upper storage box 22, and the space 31 is separated from the first chamber 37 by a wall 30 as shown in FIG. It is divided into the second chamber 39. A cooler 28, which communicates with a refrigerating apparatus (not shown) and circulates the refrigerant from the refrigerating apparatus to a built-in evaporator, is provided in the first chamber 37 that communicates with the back passage 36. Further, the second chamber 39 communicates with the side passages 46, 46, and the blower fans 32 are arranged in the chamber 39 in correspondence with a plurality (two in the embodiment) of openings 30a formed in the image wall 30. Has been done. Blower fan 32
Is arranged so as to blow air toward the first chamber 37, so that by driving the blower fan 32, the inside air sucked from the side passages 46, 46 is cooled through the opening 30a. After being brought into contact with the vessel 28 to be cooled, it is blown out to the back passage 36.

On the bottom surface of the cooler 28 disposed in the first chamber 37, the cooler 28
Drain tray that functions to discharge the water drops dripping from the machine
33 are provided. As shown in FIG. 4, a cold air passage 51 having a predetermined size is defined between the bottom surface of the drain tray 33 and the ceiling surface of the upper storage box 22. Further, a gap having a predetermined size is formed between the cooler 28 and the drawing wall 30 so as to communicate with the cool air passage 51. That is, a part of the cool air immediately after being cooled by the cooler 28 and being blown out to the rear passage 36 side is the first chamber 37.
A so-called short cycle in which the cold air passage 51 is circulated therein is performed to efficiently cool the ceiling surface of the upper storage box 22.

Further, as shown in FIG. 5, a plurality of through holes 30b are formed in a portion of the wall 30 facing the cold air passage 51, and a part of the cool air circulating in the cold air passage 51 in the first chamber 37. Is the second chamber 39 which becomes negative pressure by the operation of the blower fan 32.
Is introduced through the through hole 30b. Therefore, the upper storage box 2 that forms the bottom surface of both chambers 37, 39 defined by the wall 30
The entire ceiling surface of No. 2 is cooled by the cool air blown out from the cooler 28, and the cooling efficiency of the storage box 22 is improved.

The upper storage box 22 and the lower storage box 24 are, as shown in FIG. 2, U-shaped shielding plates which are arranged opposite to each other on both left and right edges thereof.
Stacked via 38, 38, both shield plates 38, 38 are storage boxes 2
It serves to define a horizontal passage 40 of the required dimensions between 2,24. The shielding plate 38 extends over the entire length of the storage box 22 in the depth direction, and as described later, prevents the cool air introduced from the rear passage 36 to the horizontal passage 40 from escaping to the side passages 46, 46. It also has the function to do. The front side of the horizontal passage 40 is also closed, and the passage 40 is located on the rear side of the rear passage 36.
It communicates only with.

At a position facing the horizontal passage 40 in the inner box 14, as shown in FIGS. 1 and 2, a partition 42 is provided so as to project the horizontal passage 40 into upper and lower parts. The size of the partition 42 is set so that both sides are in contact with the shielding plates 38, 38, and a gap of a required size is provided to connect the upper passage 40a and the lower passage 40b on the protruding tip side. Therefore,
The cool air blown from the cooler 28 to the rear passage 36 collides with the inner partition 42 and is sent to the upper passage 40a of the horizontal passage 40, passes through the lower passage 40b from the tip of the inner partition 42, and then the rear passage again. It flows into passage 36. Thus, the back passage
By circulating the cold air flowing through 36 through the horizontal passage 40,
Since cold air can be brought into contact with the bottom surface of the upper storage box 22 and the ceiling surface of the lower storage box 24, cooling of both storage boxes 22, 24 can be promoted.

The cold air that has passed through the lower passage 40b and flowed into the rear passage 36 again flows down through the rear passage 36 and then blows out to the bottom space 44 defined on the bottom surface of the lower storage box 24, as shown in FIG. To be done. Further, the cool air rises in the side passages 46, 46 and returns to the cooler 28.

Here, a heat insulating material is arranged on the bottom surface of each of the storage boxes 22 and 24,
The cooling efficiency of the bottom surfaces of the storage boxes 22 and 24 due to the cold air flowing through the upper horizontal passage 40a and the bottom space 44 may be suppressed. That is, since the cool air has a property of flowing from the upper side to the lower side, when the storage box 22 (24) is cooled from the ceiling surface, the rear surface, and the side surface, the air in the cold storage descends and stays in the lower portion. At this time, the storage box 22 (24)
By suppressing the cooling from the bottom of the storage box 22 (2
It is possible to effectively prevent supercooling of the lower part in 4).

According to the refrigerator according to the embodiment configured as described above, when the refrigerator is operated, the inside air on the side passages 46, 46 is sucked by the blower fan 32 to open the wall 30. It is sent to the cooler 28 via 30a, where it is cooled by heat exchange and then blown out to the back passage 36. Some of the cool air blown out from the cooler 28 flows into the cool air passage 51 defined between the drain tray 33 and the ceiling surface of the upper storage box 22 as shown in FIG. In the provided first chamber 37, a so-called short cycle of circulating the cold air passage 51 is performed.

In addition, a part of the cold air that circulates in the cold air passage 51 is part of the wall 30.
The cold air flows into the second chamber 39 through the through hole 30b that is formed in the second chamber 39, and the cold air returns to the cooler 28 through the opening 30a again and repeats circulation. That is, by bringing a part of the cool air immediately after being blown out from the cooler 28 into contact with the entire ceiling surface of the upper storage box 22, the cooling efficiency is improved and the inside of the refrigerator can be cooled to the set temperature in a short time. it can. The cold air passage of the wall 30
By forming the through hole 30b at a position corresponding to 51, the cold air passage 51 communicating with the second chamber 39 has a negative pressure, and the cooler is provided.
The cold air blown out from 28 easily flows into the cold air passage 51 (a short cycle easily occurs).

As shown in FIG. 1, the cool air blown out into the rear passage 36 without flowing into the cool air passage 51 comes into contact with the rear surface of the upper storage box 22 and flows down while exchanging heat with the inner partition 42.
And the flow is deflected. The cold air flows through the upper passage 40a of the horizontal passage 40 along the partition 42, then flows through the lower passage 40b, and flows into the rear passage 36 below the partition 42. At this time, the cold air contacts the bottom surface of the upper storage box 22 and the ceiling surface of the lower storage box 24 to perform heat exchange, and cools both storage boxes 22 and 24.

The cool air that has flowed into the rear passage 36 again is the lower storage box 24.
After flowing down while carrying out heat exchange by contacting the back surface of the container, it is blown out into the bottom space 44, where it contacts the bottom of the storage box 24. Further, when the cool air rises in the side passages 46, 46, it comes into contact with both side surfaces of both storage boxes 22, 24 to cool the storage boxes 22, 24, and then returns to the cooler 28 again. The cold air blown into the bottom space 44 is stored in the upper and lower storage boxes 2
Since the heat is exchanged between 2 and 24 to be warmed, the cool air does not stay at the bottom of the heat insulating box 18, and the cool air circulates efficiently.

In this way, the cooling efficiency of the storage box 22 can be improved by performing a short cycle on the ceiling surface of the upper storage box 22 with a part of the cool air immediately after being blown out from the cooler 28. Further, in the embodiment, since each storage box 22, 24 is configured to be cooled both when the cool air cooled by the cooler 28 descends and when it rises from the bottom, each storage box 22, 24 is
It is possible to quickly cool the inside of the container to the set temperature.
Further, since the cool air circulates between the bottom surface of the upper storage box 22 and the ceiling surface of the lower storage box 24, the cooling efficiency of both storage boxes 22 and 24 is improved, and the storage in the upper and lower storage boxes 22 and 24 is improved. There is also an advantage that the internal temperature can be made uniform.

Effects of the Invention As described above, according to the refrigerator of the present invention, a part of the cool air immediately after being blown out from the cooler causes a short cycle on the ceiling surface of the storage box, so that the entire storage box is It can be cooled uniformly. Therefore, it is possible to effectively prevent the freshness of the stored food material from decreasing due to the temperature difference in the refrigerator. In addition, by connecting the second chamber in which the blower fan is housed and arranged and the cool air passage defined above the ceiling surface of the housing box by the through hole formed in the wall, the cool air blown out from the cooler is prevented. It becomes easy to flow into the cold air passage, and the short cycle is actively performed. Further, by cooling the ceiling surface of the storage box, convection of the cool air in the upper part of the refrigerator occurs, and the entire refrigerator can be quickly cooled to the set temperature, so that running costs can be reduced. is there.

[Brief description of drawings]

1 is a vertical side view of a vertical refrigerator according to a preferred embodiment of the present invention, FIG. 2 is a vertical front view of the refrigerator shown in FIG. 1, and FIG. 3 is a horizontal cross-sectional plan view of the refrigerator shown in FIG. 4 is an enlarged side view of the main part of the refrigerator showing the upper part of the refrigerator in an enlarged manner, and FIG.
It is a schematic perspective view which notches and shows the upper part of the refrigerator shown in a figure. 12a …… opening, 18 …… insulation box 20 …… space, 22 …… upper storage box 22a …… opening, 28 …… cooler 30 …… paint wall, 30a …… opening 30b …… through hole, 31 …… Space 32 …… Blower fan, 37 …… First room 39 …… Second room, 51 …… Cold air passage

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yutaka Hirosawa 16-3 Hoshizaki Electric Co., Ltd., Sakaemachi South Building, Toyoake City, Aichi Prefecture (72) Inventor Shinya Suzuki 16-16, 3rd South Building, Sakaemachi, Toyoake City, Aichi Prefecture Hoshizaki Electric Co., Ltd. (56) References JP-A-2-263083 (JP, A) JP-A-2-192569 (JP, A) Actual Development Sho 63-144576 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A heat insulating box (18) comprising an opening (12a) and a heat insulating door (26) provided in the opening (12a), and a required space (20) inside the heat insulating box (18). Is arranged via
A storage box (22) having an opening (22a) that opens corresponding to the opening (12a), and a cooler (28) provided on the storage box (22) in the heat insulating box (18). A refrigerator comprising a blower fan (32) provided adjacent to the cooler (28), wherein the space (31) defined above the storage box (22) is the cooler (28). And a second chamber (39) in which the blower fan (32) is arranged.
A wall (30) having an opening (30a) communicating with both chambers (37, 39), a bottom surface of a cooler (28) arranged in the first chamber (37), and a ceiling of the storage box (22). Cold aisle defined between the surfaces (51)
And a cold air passageway (51) of the first chamber (37) in the wall (30)
And a through hole (30b) formed at a position corresponding to (1), and a portion of the cool air cooled by the cooler (28) is circulated in the cold air passageway (51) in the first chamber (37). ,
A part of the cold air that circulates in the cold air passage (51) is painted on the wall (30).
A refrigerator characterized by being introduced into the second chamber (39) through the through hole (30b).