JP3081487B2 - Cooling storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling storage provided with a dew receiving plate for receiving defrost water below a cooler provided in a storage room.

[0002]

2. Description of the Related Art Conventionally, in a cold storage such as a low-temperature showcase or a refrigerator, for example, Japanese Utility Model Publication No. 49-1699.
As shown in Japanese Patent Publication No. 4 (F25D11 / 00), a cooler (evaporator) and a blower (blower motor) are provided in the storage room (inside the storage), and cool air that has exchanged heat with the cooler is circulated into the storage room by the blower. At the same time, a dew receiving plate is provided below the cooler to receive the defrosted water dropped from the cooler and drain it.

FIG. 4 shows the structure of a conventional low-temperature showcase 100 of this type. Low temperature showcase 10
Reference numeral 0 denotes a main body composed of a heat-insulating box 2 opened forward, and the heat-insulated box 2 is made of a steel sheet outer box 3 opened forward.
And an inner box 4 made of a steel plate or a hard resin, which is open at the front and incorporated in the outer box 3 with a space therebetween, and a hard synthetic resin made of a hard synthetic resin connecting the opening edges of the outer box 3 and the inner box 4. It is composed of a breaker 6 and a heat insulating material 7 made of foamed polyurethane filled in a space surrounded by the outer box 3, the inner box 4 and the breaker 6 by an in-situ foaming method.

A storage room 8 is formed in the inner box 4, and a front opening of the storage room 8 is opened and closed by sliding door-type glass doors 11 fitted in the breaker 6. I have. In the upper part of the storage room 8, a plate-fin type cooler 12 of a cooling device is provided on the top wall 2 of the heat insulating box 2.
A dew receiving plate 113 made of a steel plate or a hard resin is similarly fixed to the ceiling wall 2A and provided below the lower side.

A decorative plate 14 is attached to the breaker 6 in front of the dew receiving plate 113, and a suction port 116 is formed between the decorative plate 14 and the front end of the dew receiving plate 113.
The cooler 12 is disposed at the rear side of the suction port 116, and the dew receiving plate 113 extends from the lower side of the cooler 12 to the rear while gradually lowering. Then, a drain port (not shown) is formed at the lowest part,
This drain port is connected to a drain hose that communicates with the outside of the refrigerator (not shown).

A dew receiving plate 113 located behind the cooler 12
Is provided with a discharge port 118.
Is provided with an air-permeable outlet cover 119. A blower 121 composed of a propeller fan is fixed to the dew receiving plate 113 by a mounting plate 122 corresponding to the upper side of the discharge port 118. When the compressor (not shown) and the blower 121 of the cooling device are operated in the above-described configuration, the cooler 12 exerts a cooling action, and the cool air cooled by the cooler 12 is sucked as indicated by an arrow in the figure. Then, the air is blown out from the discharge port 118 into the storage room 8. And
After cooling the inside of the storage room 8, the cooler 12
Circulation to return to.

Further, frost grows in the cooler 12 by the cooling operation. The frost is formed by a so-called off-cycle differential in which the compressor is stopped and only the blower 121 is operated, or a defrost heater (not shown). Is melted by heating. The defrost water dropped from the cooler 12 due to the defrost is received by the dew receiving plate 113 below the defrost water. Then, it flows backward along the slope and is discharged from the drain port to a drain hose.

[0008]

However, in the conventional low-temperature showcase 100, since the cooler 12 and the lower exposure plate 113 under the cooler 12 are very close to or in contact with each other as shown in FIG. 113 also receives the cooling action from the cooler 12 strongly. Therefore, the dew receiving plate 113
A large amount of condensation or frost is generated on the lower surface of the container, which drops on the product stored in the storage room 8 and causes a problem such as rust in canned juice or the like, thereby deteriorating the product value. .

On the other hand, if a space is provided between the dew receiving plate 113 and the cooler 12 as described in the above-mentioned publication, the space becomes an adiabatic space, so that dew condensation on the lower surface of the dew receiving plate 113 is reduced. Since the cold air does not pass through the cooler 12 and short circuit occurs in this interval, there has been a problem that the cooling efficiency is significantly reduced. The present invention has been made in order to solve the conventional technical problem, and has a simple configuration in which dew condensation on a dew receiving plate and the like can be suppressed and cooling efficiency can be prevented from lowering. The purpose is to provide storage.

[0010]

SUMMARY OF THE INVENTION The cooling storage of the present invention comprises:
A cooler and a blower for circulating cool air from the cooler into the storage room are installed in the storage room, and a dew point is located below the cooler and receives defrost water dripped from the cooler. It is provided with a receiving plate, and an interval is provided between the cooler and the dew receiving plate, and a partition plate for preventing circulation of circulating cool air by the blower is provided at this interval to form an insulating space. At the same time, the partition plate is provided with a drain hole for allowing the defrost water from the cooler to flow down to the dew receiving plate.

[0011]

According to the cooling storage of the present invention, since the space is provided between the cooler and the dew receiving plate, the space serves as an adiabatic space, so that dew condensation and frost are less likely to occur on the lower surface of the dew receiving plate. Therefore, it is possible to prevent the inconvenience of dew condensation or the like from being dropped on the articles stored in the storage room and being damaged.

Further, since a partition plate is provided between the cooler and the dew receiving plate to prevent circulation of the circulating cool air by the blower, a so-called short circuit of cool air which does not pass through the cooler is prevented, and cooling is performed. A decrease in efficiency is also prevented. Furthermore,
Since the partition plate is formed with a drain hole for allowing the defrost water from the cooler to flow down to the dew receiving plate, there is no problem in draining the defrost water.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a low-temperature showcase 1 as an embodiment of a cooling storage to which the present invention is applied, FIG. 2 is a vertical side view of the upper part of the low-temperature showcase 1, and FIG.
And the like are respectively shown in exploded perspective views.

The low-temperature showcase 1 has a main body composed of a heat-insulating box 2 that opens forward. The heat-insulating box 2 has an outer box 3 made of a steel plate that opens forward, and a space inside the outer box 3. An inner box 4 made of a steel plate or a hard resin which is open and installed in the front, a breaker 6 made of a hard synthetic resin which connects the opening edges of the outer box 3 and the inner box 4, an outer box 3, and an inner box 4
And a heat insulating material 7 made of foamed polyurethane filled in a space surrounded by the breaker 6 by an in-situ foaming method.

A storage room 8 is formed in the inner box 4, and a front opening of the storage room 8 is opened and closed by sliding door type glass doors 11 fitted in the breaker 6. I have. In the upper part of the storage room 8, a plate-fin type cooler 12 of a cooling device is provided on the top wall 2 of the heat insulating box 2.
A dew receiving plate 13 made of a steel plate or a hard resin is similarly fixed and provided on the top wall 2A.

A decorative plate 14 is attached to the breaker 6 in front of the dew receiving plate 13, and a suction port 16 is formed between the decorative plate 14 and the front end of the dew receiving plate 13. The cooler 12 is arranged at the rear side of the suction port 16, and the dew receiving plate 13 extends from the lower side of the cooler 12 to the rear while gradually lowering. Then, a drain port 24 is formed in the lowest part, and this drain port 24 is formed.
Is connected to a drain hose (not shown) communicating with the outside of the refrigerator.

Further, a gap G is formed between the cooler 12 and the dew receiving plate 13, and a partition plate 31 made of a steel plate or a hard resin is disposed in the gap G. The partition plate 31 has a substantially gate-shaped cross-section having an upper surface 31A, a front surface 31B, and a rear surface 31C, and engages with a projection (not shown) formed on the upper surface of the dew receiving plate 13 so that the partition plate 31 It is placed on. The upper surface 31A contacts the lower surface of the cooler 12, and the lower edges of the front surface 31B and the rear surface 31C
In contact with the upper surface 3, they close the gap G between the cooler 12 and the dew receiving plate 13. Also, the upper surface 31 of the partition plate 31
A is provided with a plurality of drain holes 32, and a plurality of notches 33 are formed at the lower edges of the front and rear surfaces 31B, 31C.

On the other hand, a discharge port 18 is formed in the dew receiving plate 13 located behind the partition plate 31, and a breathable discharge port cover 19 is attached to the discharge port 18. A blower 21 composed of a propeller fan is mounted on the mounting plate 22 so as to correspond to the upper side of the discharge port 18.
It is fixed to. When the compressor (not shown) of the cooling device and the blower 21 are operated in the above configuration, the cooler 12 exerts a cooling action, and the cool air cooled by the cooler 12 is sucked as shown by an arrow in the figure. Outlet 18
From the storage chamber 8. Then, after cooling the inside of the storage room 8, the air returns to the upper part of the dew receiving plate 13 from the suction port 16. However, since the space G below the cooler 12 is closed by the partition plate 31, almost all the cool air Flows into the cooler 12 and is sucked into the blower 21 again.

Therefore, since the circulating cold air is not short-circuited in the space G provided between the cooler 12 and the dew receiving plate 13 to be sucked into the blower 21, the cool air efficiently exchanges heat with the cooler 12. As a result, a decrease in cooling efficiency is also prevented. Further, since the gap G is provided between the cooler 12 and the dew receiving plate 13, the gap G serves as an adiabatic space, and the dew receiving plate 13 is less likely to receive the cooling action of the cooler 12. Therefore, dew condensation and frost hardly occur on the lower surface of the dew receiving plate 13, and the inconvenience that the condensed water or the like drops on the product stored in the storage room 8 and is damaged is also prevented.

Although the frost grows in the cooler 12 by the cooling operation, the frost forms the blower 2
It is melted by a so-called off-cycle differential operating only 1 or by heating by a defrost heater (not shown). The defrost water dropped from the cooler 12 by the defrost passes through the drain holes 32 of the partition plate 31 and is received by the dew receiving plate 13 thereunder. And go through notch 33 ...
It flows backward along the slope of the dew receiving plate 13 and is discharged from the drain port 24 to a drain hose. Accordingly, there is no danger that the drainage of the defrost water is hindered by the partition plate 31 provided below the cooler 12.

In the embodiment, the present invention is applied to a low-temperature showcase. However, the present invention is not limited to this. The present invention is also effective for home and commercial refrigerators.

[0022]

As described above in detail, according to the present invention, since the space is provided between the cooler and the dew receiving plate, this space becomes an adiabatic space, and condensation and frost are formed on the lower surface of the dew receiving plate. It is unlikely to occur.
Therefore, it is possible to prevent the inconvenience of dew condensation or the like from being dropped on the articles stored in the storage room and being damaged.

Further, a partition plate is provided between the cooler and the dew receiving plate to prevent circulation of the circulating cool air by the blower, so that a so-called short circuit of cool air which does not pass through the cooler is prevented, and A decrease in efficiency is also prevented. Furthermore,
Since the partition plate is formed with a drain hole for allowing the defrost water from the cooler to flow down to the dew receiving plate, there is no problem in draining the defrost water. In particular, since the above effects can be realized with a simple configuration, it is possible to suppress a rise in manufacturing costs.

[Brief description of the drawings]

FIG. 1 is a perspective view of a low-temperature showcase as an embodiment to which the present invention is applied.

FIG. 2 is a vertical side view of the upper part of the low-temperature showcase of FIG. 1;

FIG. 3 is an exploded perspective view of a cooler, a dew receiving plate, and the like of the low-temperature showcase of FIG. 1;

FIG. 4 is a vertical side view of the upper part of a conventional low-temperature showcase.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Low-temperature showcase 2 Insulated box 8 Storage room 12 Cooler 13 Dew receiving plate 21 Blower 31 Partition plate 32 Drainage hole G interval

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model 60-146282 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25D 21/14 F25D 19/00 520-522

Claims (1)

(57) [Claims] 1. A defroster which is installed in a storage room and a blower which circulates cool air from the cooler into the storage room, and which is located below the cooler and drops from the cooler. In a cooling storage provided with a dew receiving plate for receiving water, an interval is provided between the cooler and the dew receiving plate, and the interval prevents circulation of the circulating cool air by the blower.
A cooling storage, wherein a partition plate for stopping is provided to form an adiabatic space, and a drain hole for flowing defrost water from the cooler to the dew receiving plate is formed in the partition plate.