JPH055583A - Show-case - Google Patents

Abstract

PURPOSE:To reduce quantity of leakage heat due to invasion of the atmospheric air and to perform an energy conservation by mounting a drain tube obliquely upward from an inlet end toward an outlet end in a state that the lower part of the outlet end is lower than the height of the peripheral edge of a dew reception tray. CONSTITUTION:Part of chilled gas heat exchanged in a cold storage chamber 2 is dew-condensed inside a switching door 6, fed down to drop in a dew reception tray 20, and fed from a drain tube 21 of the tray 20 to a drain tank 17 through a drain hose 19. The tube 21 is formed at a lower end of an outlet end 21b lower than the height of the outer periphery of the tray 20, and mounted obliquely upward so as to prevent invasion of the atmospheric air by the part of the drain water. Since invasion of warm atmospheric air into a cooler 8 can be prevented, the cooling efficiency of the cooler 8 can be improved. Further, a frosting amount of the cooler 8 is reduced to decrease drain water, thereby reducing drain of a drain tank. Automatic evaporation of the drain water due to the use of heat of a blower is facilitated to perform energy conservation by the reduction in quantity of leakage heat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a showcase for displaying frozen food at a store for sale.
The present invention relates to a door dew receiving device for drain water that is condensed on the opening / closing door.

[0002]

2. Description of the Related Art A door dew receiving device for drain water in a showcase of this type that has been already proposed is constructed as shown in FIGS.

That is, in FIG. 4 to FIG. 6, a showcase body 1 in a showcase displaying and selling frozen foods displayed in a store has a product storage room (refrigerating room) 2 for storing frozen foods while keeping them frozen. A machine room 3 is divided into upper and lower parts by a heat insulating material 4, and a peep window 5 made of a multi-layered glass plate is provided on two side surfaces of the showcase body 1 in which the product storage room 2 is located. There is. Further, on each of two side surfaces of the showcase body 1 beside the peep window 5, each open / close door 6 made of a multi-layer glass plate is hinged so as to be opened / closed so as to open sideways. A dew tray 7 is provided along the lower end portion of each opening / closing door 6 in the showcase body 1 below the reference numeral 6.

That is, as shown in FIGS. 5 and 6, the dew receiving tray 7 has an elongated gutter shape, and a discharge port 7a is formed in a part of the inside of the dew receiving tray 7 so that the heat insulating material 4 is formed. To the concave portion 4a.

On the other hand, a cooler (evaporator) 8 is provided on the heat insulating material 4, and a partition plate 9 is laid on the cooler 8 to form a cooling chamber 9a. There is.
In addition, an inlet 10 and an outlet 11 for cold air are formed in the partition plate 9, and a cooler blower 12 and a partition member 13 are provided in the recess 4a in which the inlet 10 is located.
Is provided.

On the other hand, a well-known refrigerant compressor 14, a condenser 15, and a cooling blower 16 for cooling them are installed in the machine room 3, and the showcase body 1 in which the machine room 3 is located. A drainage tank 17 is detachably attached to the bottom plate 1a. Further, a drain port 18 is attached to the concave portion 4a of the heat insulating material 4, and a drain hose 19 is connected to the drain port 18 so as to communicate with the drain tank 17.

Therefore, when the above-mentioned showcase is displayed at a store and the frozen food is displayed and sold, by driving the refrigerant compressor 14, the refrigerant compressed by the refrigerant compressor 14 is condensed by the condenser 15. Heat exchange with the liquid refrigerant,
This is transferred to the cooler 8 through a capillary tube (not shown), the liquid refrigerant is heat-exchanged in the cooler 8 to generate cool air, and the cool air is driven from the cooler blower 12 to flow out from the outlet 11. The frozen food is sent to the product storage chamber 2 where it is kept cold, and then the cold air is sent from the inflow port 10 to the outflow port 11 through the cooler 8 by the cooler blower 12 to be circulated. ing.

On the other hand, a part of the cold air that has been heat-exchanged in the product storage chamber 2 is condensed on the inside of each of the opening / closing doors 6 and flows down to fall on the dew tray 7, which is then exposed. It is configured to flow out from the discharge port 7a of the tray 7 through the drain hose 19 into the drain tank 17.

[0009]

However, in the door dew receiving device of the drain water that is dewed on the opening / closing door in the above-mentioned showcase, the discharge port 7a of the dew receiving tray 7 communicates with the outside air to the cold air inlet 10 side. Since the warm outside air always flows into the cooler 8 to lower the cooling performance of the cooler 8, the frost amount of the cooler 8 increases and Due to this, the amount of drain water also increases, which necessitates frequent drainage work of the drain tank 17, and because of the large amount of drain water, the drain hose 19 is heated and the cooling blower 16 is used. Since it is difficult to automatically evaporate the drain water by using the heat of the above, and the amount of heat leak due to the invasion of the outside air is large, there is a problem that the power consumption increases.

In order to solve the above-mentioned problems, the present invention prevents the outside air from entering the inside of the dew tray with a part of drain water, improves the cooling efficiency of the cooler, and frosts the cooler. The amount of drain water is reduced to reduce the amount of drain water, the drain water in the drain tank is reduced, the automatic evaporation of drain water by using the heat of the blower is facilitated, and the amount of heat leak due to infiltration of outside air is reduced to save energy. The purpose is to provide showcases.

[0011]

SUMMARY OF THE INVENTION According to the present invention, a product storage room in which at least one wall is composed of a transparent opening / closing door in the upper part, and a cooler and a blower for the cooler are arranged in the lower part of the product storage room. A cooling chamber that circulates cool air to the product storage chamber and a drain tank that stores the compressor and the condenser and the drain water that is led from the cooling chamber side through the drain hose at the bottom of the cooling chamber are arranged. In a showcase equipped with a machine room, a dew pan for receiving dew falling from the open / close door is provided under the open / close door, and the drain end of the dew pan is guided into the cooling chamber. And an outlet end is provided with a drain pipe communicating with the cooling chamber, and the drain pipe is inclined upward from the inlet end toward the outlet end with the lower end of the outlet being lower than the peripheral height of the dew tray. Attached It is those that were.

[0012]

According to the present invention, the dew from the opening / closing door received by the dew tray at the lower part of the opening / closing door is guided directly into the cooling chamber from the drain pipe, and from the lower part of the cooling chamber to the machine room via the drain pipe. Since it is guided to the drain tank, the structure is simple and the drainage efficiency is good, but the increase in the amount of frost on the evaporator due to the outside air is suppressed because the outside air is not directly sucked into the cooling chamber from the drain pipe. Is.

[0013]

The present invention will now be described with reference to the illustrated embodiments.

The present invention will be described by giving the same reference numerals to the same components as those of the above-mentioned specific example.

1 to 3, reference numeral 1 is a showcase main body in a showcase for exhibiting and selling frozen foods, and in the showcase main body 1, a product storage room for storing frozen cold foods ( Refrigerator room 2 and machine room 3
Are divided into upper and lower parts by a heat insulating material 4, and a viewing window 5 made of a multi-layered glass plate is provided on two side surfaces of the showcase body 1 in which the product storage chamber 2 is located.
Further, on each of two side surfaces of the showcase body 1 beside the peep window 5, each open / close door 6 made of a multi-layer glass plate is hinged so as to be opened / closed so as to open sideways. A dew tray 20 is provided along the lower end portion of each opening / closing door 6 in the showcase body 1 below the reference numeral 6.

That is, the dew tray 20 is shown in FIGS.
As shown in FIG. 4, the drain pipe 21 is attached to a part of the inside of the dew tray 20 so as to be inclined upward so as to prevent outside air from entering with a part of drain water. The discharge pipe 21 extends into the recess 4a of the heat insulating material 4.

In particular, the dew tray 20 is formed of a synthetic resin material, and an inlet end 21a of the drainage pipe 21 is formed near the bottom of the dew tray 20. ,
Further, the lower end of the outlet end 21b of the drain pipe 21 is formed to be lower than the height of the outer peripheral edge of the dew tray 20, and the drain pipe 21 extends from the inlet end 21a to the outlet end 21b. Slopes upwards toward. The relationship between the dew tray 20 and the discharge pipe 21 is as follows.

That is, assuming that the outer diameter of the discharge pipe 21 is X, the height of the discharge pipe 21 is Y, and the height of the dew tray 20 is Z, X <Y and Y <Z are formed. ing.

On the other hand, a cooler (evaporator) 8 is provided on the heat insulating material 4, and a partition plate 9 is laid on the cooler 8 to form a cooling chamber 9a. There is.
In addition, an inlet 10 and an outlet 11 for cold air are formed in the partition plate 9, and a cooler blower 12 and a partition member 13 are provided in the recess 4a in which the inlet 10 is located.
Is provided.

On the other hand, in the machine room 3, a well-known refrigerant compressor 14, a condenser 15 and a cooling fan 16 for cooling them are installed, and the showcase body 1 in which the machine room 3 is located. A drainage tank 17 is detachably attached to the bottom portion 1a of the. Further, a drain port 18 is attached to the concave portion 4a of the heat insulating material 4, and a drain hose 19 is connected to the drain port 18 so as to communicate with the drain tank 17.

The operation of the present invention will be described below.

Therefore, a part of the cool air that has been heat-exchanged in the refrigerating room 2 is condensed inside the opening / closing doors 6 and flows down to fall on the dew tray 20. From the discharge pipe 21 of the dew tray 20 to the drain tank 17 through the drain hose 19.

Particularly, since the discharge pipe 21 is attached so as to be inclined upward so as to prevent the invasion of the outside air by a part of the drain water, it is possible to prevent the warm outside air from flowing into the cooler 8. As a result, the cooling efficiency of the cooler 8 can be improved, and the amount of frost formed on the cooler 8 can be reduced to reduce the drain water to reduce the drainage of the drainage tank, thereby utilizing the heat of the blower. Energy is saved by facilitating the automatic evaporation of drain water and reducing the amount of heat leak.

[0024]

As described above, according to the present invention, a product storage room having at least one wall formed of a transparent opening / closing door in the upper part, and a cooler and a blower for the cooler are arranged in the lower part of the product storage room. A machine in which a cooling chamber that circulates cool air to the product storage chamber, a compressor and a condenser in the lower part of the cooling chamber, and a drain tank that stores drain water led from the cooling chamber side through a drain hose are arranged. In a showcase equipped with a chamber, a dew pan for receiving dew falling from the open / close door is provided under the open / close door, and an inlet end is provided near the bottom of the dew pan to guide the drain water of the dew pan into the cooling chamber. A drain pipe that is open and has an outlet end communicating with the cooling chamber is provided, and the drain pipe is attached so as to be inclined upward from the inlet end toward the outlet end with the lower end of the outlet being lower than the peripheral height of the dew tray. Shi Therefore, not only can the cooling efficiency of the cooler be improved, but the amount of frost formed on this cooler can be reduced to reduce the drain water, the drainage of the drainage tank can be reduced, and the heat of the blower can be used. It has excellent effects such as facilitating the automatic evaporation of drain water and reducing the amount of heat leakage due to the infiltration of outside air to save power consumption.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of a showcase of the present invention.

FIG. 2 is a perspective view showing a part of a dew tray incorporated in the showcase of the present invention with a part thereof omitted.

FIG. 3 is a cross-sectional view of a dew tray incorporated in the showcase of the present invention.

FIG. 4 is a perspective view of a showcase already proposed.

FIG. 5 is a cross-sectional view showing a main part of the already proposed showcase.

FIG. 6 is an exploded perspective view of a showcase door dew receiving device that has already been proposed.

[Explanation of symbols]

 1 Showcase main body 2 Product storage room 3 Machine room 4 Insulation material 6 Opening / closing door 9a Cooling room 17 Drain tank 19 Drain hose 20 Dew tray 21 Drain pipe

Claims (1)

Claims: 1. A product storage room in which at least one wall is composed of a transparent opening / closing door in the upper part, and a cooler and a blower for the cooler are arranged in the lower part of the product storage room. A cooling chamber that circulates cool air to the machine room, and a machine room in which a compressor and a condenser and a drain tank that stores drain water led from the cooling chamber side through a drain hose are arranged in the lower part of the cooling chamber. In the provided showcase, a dew pan for receiving dew falling from the open / close door is provided under the open / close door, and the inlet end is opened near the bottom of the dew pan to guide the drain water of the dew pan into the cooling chamber. The outlet end is provided with a drainage pipe communicating with the cooling chamber, and the drainage pipe is attached so as to incline upward from the inlet end toward the outlet end with the lower end of the outlet being lower than the peripheral height of the dew tray. Special Showcase to collect.