JP2951015B2 - High humidity refrigerated showcase - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high humidity refrigerated showcase suitable for storing fresh flowers, fruits, wine, etc. while maintaining the inside of the case at high humidity.

[0002]

2. Description of the Related Art At present, it is a common sense that foods and the like are stored in an electric refrigerator, and the temperature in a refrigerator can be set relatively freely.

[0003] However, it has long been known that the storage of fresh foods, fresh flowers, wine, etc. is important not only in storage temperature but also in humidity control. The humidity was around 60%, and there was hardly any that maintained high humidity, and it was impossible to store fresh food for a long time.

[0004] Therefore, as disclosed in Japanese Patent Publication No. 59-49511, the humidity in the refrigerator is increased by using water from a water tray that has been defrosted by a cooler so that fresh foods and the like can be stored for a long period of time. A refrigerator was proposed. That is, the air in the refrigerator is circulated through a cooler and a water tray by one fan,
The inside of the chamber is kept high humidity.

[0005]

However, according to the above configuration, the cool air in the refrigerator is circulated at a constant air volume by one fan, so that the humidity in the refrigerator is always constant. For this reason, it was not possible to change the humidity to an appropriate level according to the articles stored in the refrigerator, and there was a problem that the humidity was insufficient for vegetables but too high for wine. .

The present invention has been made in view of the above, and an object of the present invention is to provide a high-humidity refrigerated showcase that can maintain an appropriate humidity according to articles stored in the case with a simple configuration.

It is another object of the present invention to provide a high-humidity refrigerated showcase that has a good appearance when stored in a store, such as fresh flowers.

[0008]

According to the present invention, there is provided a case having a heat insulating layer, an opening / closing door of the case, and a refrigerant circulation type cooling device having a compressor outside the case and a cooler inside the case. A cooling device disposed in the cooling device; a water receiving tray provided in the case for receiving water defrosted by the cooler; ventilation holes provided in upper and lower portions of the case wall, respectively; A fan provided above the compressor and circulating the air in the case through a cooler and a water pan, and performing a humidifying operation by stopping the compressor and operating the fan. A change means for setting the air flow rate of the fan during the humidification operation is provided, and the humidity is adjusted by maintaining the inside of the case at a plurality of humidity zones by setting the change means.

[0009]

According to the high humidity refrigerated showcase of the present invention, the cool air cooled by passing through the cooler becomes high in humidity including the water in the water tray and circulates through the case. The inside of the case can be maintained in a high humidity state. In this case, the water tray is for receiving the defrosted water of the cooler and thus does not need to be provided separately. In addition, since water is stored in the water tray every time defrosting is performed, no water supply is required. In addition, since ventilation holes are provided above and below the case wall, metabolic gas (carbon dioxide) such as fresh flowers stored in the case does not accumulate in the case, and fresh air is always taken in, and By releasing carbon dioxide gas, the freshness of the stored article can be kept long.

In addition, the humidity in the case can be changed by changing the amount of water caught in the cool air passing over the water tray by a simple means of changing the air volume of the fan, and the air volume of the fan can be appropriately selected. By simply doing so, the inside of the case can be controlled to an appropriate humidity according to the stored articles.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes an inner box 2, an outer box 3, a heat insulating material 4 foam-filled between the two boxes, and glass plates 5, 6, 7, and 8 disposed on the front and left and right side surfaces thereof. It is a formed case.

The front glass plates 5 and 6 of the case 1
Each of them has a double glass structure, has an air layer therebetween, and has an outer surface of the outer glass, ie, glass plates 5 and 6.
A heat ray reflective film (not shown) is stuck on one side of the outer surface of the.

The glass plates 7 and 8 on the side of the case 1
Each has a triple glass structure, has an air layer between the glasses, and has a film-shaped heater (not shown) for preventing dew condensation on the surfaces of the glass plates 7 and 8 on the innermost surface of the outermost glass. Is affixed.

The glass plates 5 and 6 have a structure which can be slid up and down to open and close the front opening of the case 1. A cooling device 9 of a refrigerant circulation type is provided below the case 1.

The cooling device 9 includes a compressor 10 and a condenser 11
And a capillary tube (not shown) and a cooler 12, and only the cooler 12 is installed in the case 1.

The cooling device 9 is provided with a box 13, and a compressor 10, a condenser 11, a dew tray 14, and a fan 15 for cooling the condenser 11 are juxtaposed in the box. An air inlet 16 is provided on the front and an outlet 17 is provided on the rear. Further, a filter 18 for preventing clogging is provided obliquely downstream of the suction port 16. Further, a hot air outlet 19 is provided in the upper part of the front surface of the box 13, and the hot air heated by the compressor 10 from the outlet 19 toward the glass plates 6 and 7 of the case 1 is blown by a fan. Blowing out by 20 prevents condensation on the glass plates 6,7.

The dew tray 14 is fixed so as to be able to be pulled out by a metal fitting 21, and a high-temperature pipe 22 through which a high-temperature refrigerant discharged from the compressor 10 flows is provided close to the lower surface thereof.

In the case 1, a cooler 12 is provided on the back thereof, and two fans 2 are provided above the cooler 12.
A water receiving tray 26 for receiving water defrosted by the cooler 12 is provided below the support frames 25, 24. A connection pipe 27 having one end opening slightly protruding from the bottom surface of the water receiving tray 26 is connected to an end of the water receiving tray 26, and the other end of the pipe is connected to the case 1.
Through the hole 28 of the cooling device 9.

Fluorescent lamps 29 and 30 are provided on both front corners of the case 1 and extend vertically in the case 1, and a spotlight 31 is provided at the center of the upper surface.

At the top and bottom of the case 1 are provided ventilation holes 32 for taking in outside air into the case 1 and ventilation holes 33 for discharging carbon dioxide and ethylene gas stored in the case 1 out of the case 1. Have been.

In front of the fans 23 and 24, a cover is provided close to both the ventilation holes 32 and the fans 23 and 24 so as to directly suck the outside air introduced through the ventilation holes 32 and guide the air to the cooler 12. 34 are provided.

Reference numeral 35 denotes a heater for defrosting the cooler 12, and reference numeral 36 denotes a heater for heating the water tray 26 attached to the support frame 25.

In the case 1, a glass shelf 41,
42 is provided, and the rear surface is a mirror plate.

A selection switch 37 for switching humidity, which will be described later, is provided on the upper part of the front of the case 1 as an operation switch.
A switch 38 for a fluorescent lamp, a switch 39 for a spotlight, and an operation switch 40 for the fan 20 for blowing hot air are provided.

In the above-described structure, the temperature of the inside of the case 1 is controlled to about + 5 ° C. to 15 ° C. by circulating cool air blown from below the cooler 12 by operating the cooling device 9. In this case, both the fans 23 and 24 are operated.

Thereafter, when the cooler 12 frosts, the heater 3
5 is energized and defrosting begins. Then, water condensed by the defrost drops and accumulates in the water receiving tray 26. At this time, the compressor 10 is stopped, and at least one of the fans 23 and 24 is operated.

That is, in the present showcase, the humidifying operation is performed during such defrosting, the compressor 10 is stopped, the heater 36 is energized, and the two fans 23, 2
4 and the first humidification mode in which both the compressors 10 are stopped, the compressor 10 is stopped, the heater 36 is energized, and one fan 23
The second humidification mode in which only the operation is performed is set.

The switch 39 selects the humidification mode.
In the first humidification mode, the two fans 23 and 24 are operated, so that a large amount of cold air passing through the cooler 12 hits water in the water receiving tray 26, and water generated by heating the heater 36. As a result, cold air containing a large amount of water circulates through the case 1. The humidity in case 1 at this time was
0, and 8 when the spotlight 31 is turned off
It becomes 0% or more, and when it is turned on, it becomes 75% or more due to the corresponding load, which is suitable for storing fresh flowers, for example.

In the second humidification mode, by operating only one fan 23, a small amount of cool air whose flow rate has decreased hits the water in the water receiving tray 26. Although there is some evaporation, cold air containing a small amount of water circulates through the case 1.
Therefore, the humidity in the case 1 at this time becomes 65% or more, which is suitable for storing wine, for example.

Here, the above-mentioned% of humidity is a relative humidity when the outside air temperature is 30 ° C. and the outside air humidity is 30%.
At the beginning of the operation of the showcase, there is no water in the water tray 26, so it is necessary to inject water.
Since the defrost water of No. 2 is sufficient, no replenishment of water is required.

Since the opening of the connection pipe 27 is protrudingly provided in the water receiving tray 26, the water receiving tray does not become full, and overflowing water flows down from the opening of the pipe 27 to the dew receiving tray 14. Evaporated by the pipe 22.

Since the outside air introduced from the ventilation hole 32 is guided by the cover 34 as it is to the fans 23 and 24, the introduced outside air is filled with carbon dioxide gas or ethylene gas already filled in the case 1. Can be suppressed, and the inside of the case can always be filled with fresh high-humidity cold air to improve the storage effect.

[0034]

As described above, according to the present invention, the cool air cooled by passing through the cooler becomes high in humidity including the water in the water tray and circulates in the case. Can be maintained in a high humidity state. In this case, the water tray is for receiving the defrosted water of the cooler and thus does not need to be provided separately. In addition, since water is stored in the water tray every time defrosting is performed, no water supply is required. In addition, since ventilation holes are provided above and below the case wall, metabolic gas (carbon dioxide) such as fresh flowers stored in the case does not accumulate in the case, and fresh air is always taken in, and By releasing carbon dioxide gas, the freshness of the stored article can be kept long. Not only that, the humidity inside the case can be changed by changing the amount of water caught in the cool air passing over the water pan by simple means of changing the air volume of the fan. In addition, the inside of the case can be controlled to an appropriate humidity according to the stored articles.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a high humidity refrigerated showcase.

FIG. 2 is a cross-sectional view of the high humidity refrigerated showcase as viewed from the front.

FIG. 3 is a perspective view of a high humidity refrigerated showcase.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 6, 7 Glass plate 9 Cooling device 10 Compressor 12 Cooler 23, 24 Fan 26 Water tray 32, 33 Vent

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) F25D 21/14 F25D 23/00 302 F25D 11/00-13/00

Claims (2)

(57) [Claims] 1. A case having a heat insulating layer, an opening / closing door of the case, a cooling device having a refrigerant circulation type cooling device having a compressor disposed outside the case and a cooler disposed inside the case, A water receiving tray provided in the case for receiving water defrosted by the cooler, ventilation holes provided at upper and lower portions of the case wall, and provided above the cooler, and a fan which is circulated in the casing air passing through the condenser and the water receiving tray, a performs the humidifying operation by operating the fan to stop the compressor, the time of the humidifying operation Set the fan air volume
Changing means provided, and according to the setting of the changing means,
A high-humidity refrigerated showcase characterized by maintaining the inside of the base in multiple humidity zones . 2. The apparatus according to claim 1, wherein a plurality of fans are provided, and the changing means changes between a first mode in which the plurality of fans are operated and a second mode in which only one fan is operated. Humidity refrigerated showcase.