JP2609954B2 - 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 cold storage such as a low-temperature case or a refrigerator provided with a glass door at a front opening, and is defined by a thermally conductive box disposed inside an insulated box. The present invention relates to a cooling storage for indirectly cooling a storage room.

[0002]

2. Description of the Related Art As a conventional technique, Japanese Utility Model Application Laid-Open No. 60-9388 has been proposed.
In JP-A-2, the heat-insulated outer box and the heat-conducting inner box are fixedly mounted in a fixed space, and cool air is circulated through the space between the outer box and the inner box to cool the inner box. The inside is a refrigeration room, and a refrigerator that indirectly cools the refrigeration room by placing an evaporator of a refrigerator to create cool air and a fan to circulate the cool air in the cool air circulation space between the outer box and the inner box. It has been disclosed.

[0003]

Such a refrigerator of the prior art has an indirect cooling system, so that the relative humidity of the refrigerator compartment is maintained at a considerably high level, which is suitable for storing fresh products. If the humidity is high (90% to 100%), there is a problem that the label is peeled off or mold is generated on the cork, thereby impairing the commercial value. However, if the humidity is too low, there is a problem in that the cork dries, the air circulates, and the wine oxidizes. Also, depending on the type of food, there are foods that do not like high humidity as described above due to problems such as mold generation.

[0004] In view of the problems of the prior art, the present invention provides a cold storage for maintaining a storage room at a humidity suitable for wine storage or storage of food and drink which does not like extreme high humidity. Things.

[0005]

According to the present invention, a heat conduction box is disposed inside a heat insulation box having a glass door at a front opening thereof with a space between the heat insulation box and the heat conduction box. With the inside of the guide box as a storage room, an evaporator and a cool air circulating blower are arranged in a cool air passage between the heat insulating box and the good heat conduction box, and in a cooling storage configured to indirectly cool the storage room, A fluorescent lamp for indoor lighting is provided in the storage room, and an electric heater is provided in the cold air passage, which is energized when the fluorescent lamp is turned off and de-energized when the fluorescent lamp is turned on. A cooling storage having a discharge port and a suction port which are always communicated with the cool air passage in the heat conduction box.

[0006]

[0007]

According to the present invention, the humidity in the storage room can be reduced by using a fluorescent lamp for interior lighting to store wine or use the extremely high humidity without losing the advantage of high humidity by the indirect cooling system (such as prevention of drying). It can be easily lowered to a humidity suitable for storage of food and drink that does not like humidity, and of course, it turns on when the fluorescent lamp turns off and turns off when the fluorescent lamp turns on. By providing the electric heater, the same heat load can be always applied regardless of whether the fluorescent lamp is turned on or off, and the storage room can be maintained at a substantially stable humidity.

[0008]

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A cooling storage according to the present invention will be described below with reference to the drawings using a reach-in type low temperature case as an example. FIG. 1 is a longitudinal side view of a low-temperature showcase, and FIG. 2 is a low-temperature showcase.
FIG. 3 is a perspective view of a main part of the low-temperature case with a part cut away, FIG. 4 is a perspective view of the low-temperature case, and FIG. 5 is an electric circuit of the second invention. FIG.

1 is a double door type glass door 2 at the front opening.
A heat conducting box 3 having a front opening made of, for example, a thin steel plate coated with paint, is provided inside the heat insulating box 1 so as to be spaced from the inner wall surface of the heat insulating box 1. It is fixedly equipped. The heat conduction box 3 is composed of a top plate 3A, both side plates 3B and 3C, a rear plate 3D, and a detachable and removable bottom plate 3E. A substantially closed space formed in the heat conduction box 3 is defined as a cold air passage 4 and a space inside the heat conduction box 3 is defined as a storage room 5.
And In this storage room 5, food and drink, for example, wine 6
Are mounted in a detachable manner.
On the other hand, in a machine room 8 formed below the heat-insulating box 1, an electric compressor 9, a condenser 10, a blower 11, and the like of a refrigeration system are arranged.

The heat insulating box 1 and the rear plate 3 of the heat conduction box 3
D, the electric compressor 9 and the condenser 1
0 and the like, and an evaporator 12 constituting a refrigeration system is provided. Above the evaporator 12, two cool air circulation fans 13 are provided.
Below the evaporator 12, the defrosted water dropped from the defrosted water guide plate 14 is collected, and a water tray 15 disposed on the lower surface of the bottom plate 3E is collected.
A drain receiver 16 and a drain pipe 17 for leading to the drain are provided.
The water tray 15 is disposed so as to face a large number of small holes 18 for humidification formed in the bottom plate 3 </ b> E. Dewatering from the evaporator 12 is mostly used to supply water to the water tray 15. For this purpose, a ventilation suction hole 19 and a ventilation discharge hole 20 for communicating the atmosphere with the cool air passage 4 are formed on the rear wall of the heat-insulating box 1 to promote frost formation on the evaporator 12.

Further, in addition to the humidifying hole 18 which does not directly connect the cold air passage 4 and the storage room 5 to the front portion of the bottom plate 3E,
A plurality of discharge holes 21 for allowing the cool air passage 4 and the storage room 5 to always directly communicate with each other to introduce a part of the circulating cool air into the storage room 5.
And a plurality of suction holes 22 are formed.

On both sides of the front face of the storage room 5, fluorescent lamps 24 for indoor lighting covered by fluorescent lamp shades 23 formed of a translucent resin are provided vertically. The fluorescent lamp shade 23 has an inlet opening 25 and an outlet opening 26 which communicate with the cool air passage 4 at the lower end and the upper end, and allows a part of the circulating cool air to pass through the shade 23 to be used indoors. To prevent the temperature from rising.

Further, a fluorescent lamp 2 is provided on the low pressure side of the cold air passage 4.
An electric heater 27 that is energized when the lamp 4 is turned off is provided. The relationship between the fluorescent lamp 24 and the electric heater 27 is shown in the electric circuit of FIG. Here, 28 is an AC power source, 2
9 is a ballast, 30 is a glow lamp, 31 is an illumination switch, and a contact 31A for turning on the fluorescent lamp 24 and a contact 31B for energizing the electric heater 27 when the fluorescent lamp 24 is turned off.
have.

In the above configuration, the cool air exchanged in the evaporator 12 is cooled by the cool air circulating fan 13 in the cool air passage 4.
Is circulated as indicated by an arrow A to cool the heat conduction box 3. Thereby, the air in the storage room 5 is indirectly cooled through the heat conduction box 3. Such an indirect cooling method of the storage room 5 is one requirement for maintaining the storage room 5 at a high humidity (90% to 100%). In addition, the temperature of the storage room 5 is controlled to about 5 ° C. to 10 ° C. for general wine, and about 10 ° C. to 15 ° C. for fine wine.

On the other hand, since the heat of the fluorescent lamp 24 illuminating the storage room 5 becomes a cooling load, the operation rate of the electric compressor 9, that is,
The cooling operation rate can be increased, and the cool air circulating through the cool air passage 4 has a low humidity, and a part of the cool air is
1 By the action of the suction small hole 22, it is introduced into the storage room 5 as shown by the arrow B, whereby the humidity of the storage room 5 decreases. Ideally, it is preferable to lower the humidity of the storage room 5 to 60% to 80% or a numerical value close thereto. This humidity is suitable for storage of wine 6 and can prevent peeling of the label or the occurrence of mold of cork, and also has an effect of oxidizing wine 6 due to drying of cork and air circulation. Can be prevented. Also,
Due to such a flow of the cool air to the storage room 5, a slight air circulation is generated in the storage room 5, whereby the temperature variation of the storage room 5 can be reduced.

When the fluorescent lamp 24 is turned off by the illumination switch 31, the electric heater 27 is energized through the contact 31B. Then, the cooling operation rate can be increased by the heat of the heater 27, and the cool air circulating in the cool air passage 4 becomes low in humidity as described above, and a part of this cool air is discharged into the small holes for discharge 21 and small holes for suction 22. Is introduced into the storage room 5 as shown by the arrow B, whereby the humidity of the storage room 5 decreases.

The present invention is also suitable for storing foods that do not like extreme high humidity, in addition to wine 6,
The position of 1 and the small holes 22 for suction is not limited to the embodiment.

[0019]

According to the present invention, the humidity of the storage room can be stored in a wine storage or an extreme by using a fluorescent lamp for indoor lighting without impairing the advantage of high humidity by the indirect cooling system (such as prevention of drying). It can be easily lowered to a humidity suitable for storage of foods and drinks that do not like high humidity, as well as energizing when the fluorescent lamp is turned off and de-energizing when the fluorescent lamp is turned on. Lighting of fluorescent lamps,
The same heat load can always be given regardless of the light off,
The storage room can be maintained at a substantially stable humidity.

[0020]

[Brief description of the drawings]

FIG. 1 is a vertical side view of a low-temperature case.

FIG. 2 is a vertical sectional front view of a low-temperature case.

FIG. 3 is a perspective view of an essential part in which a part of a low-temperature case is cut away.

FIG. 4 is a perspective view of a low-temperature case.

FIG. 5 is an electric circuit diagram showing a relationship between a fluorescent lamp and an electric heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat insulation box 2 Opening / closing door 3 Heat conduction box 4 Cold air passage 5 Storage room 12 Evaporator 13 Cold air circulation fan 21 Discharge small hole 22 Suction small hole 23 Fluorescent light shade 24 Fluorescent light 27 Electric light Ta

Claims (1)

(57) [Claims] 1. A heat conducting box is disposed inside a heat insulating box having a glass door at a front opening thereof with a space between the heat insulating box and a storage room. In addition, an evaporator and a cool air circulating blower are provided in a cool air passage between the heat insulating box and the heat conduction box, and in a cooling storage configured to indirectly cool a storage, a room for indoor lighting is provided in the storage. An electric heater for arranging a fluorescent lamp, energizing the cold air passage in conjunction with turning off of the fluorescent lamp, and de-energizing in synchronism with turning on of the fluorescent lamp, And a discharge port and a suction port which are always in communication with the cold air passage.