JPS6216621Y2 - - Google Patents

Description

[Detailed description of the invention] This invention involves arranging, for example, multiple shelves in a refrigerating room whose outer peripheral wall is made of a transparent material, storing products on each shelf, and storing these products. This invention relates to improvements to display cases that can be displayed while being refrigerated.

FIG. 1 shows the appearance of this type of show case, where 1 is the main body. Inside this main body 1, a refrigerator compartment 2 is formed in the upper part, and a machine room 3 is formed in the lower part.As shown in FIG. There is. The outer circumferential wall of the refrigerating chamber 2 is made of a transparent material such as double glass 5, and an evaporator 6, a fan 7, a product shelf 8, etc. are housed inside. Further, ventilation holes 9 are formed in the outer peripheral wall of the machine room 3, and a condenser 10, a compressor 11, a fan 12, etc. are housed inside.
Then, the compressor 11 and the capacitor 1
0, expansion mechanism (not shown) and evaporator 6
are sequentially connected via connecting pipes (not shown) to form a refrigeration cycle, and the inside of the refrigerator compartment 2 is cooled by the evaporator 6, and air is ventilated inside the machine room 3 through each ventilation hole 9, and the condenser 10, compressor 11, and other heat generating sources were designed to be cooled.

However, in the case of the conventional structure described above, when the temperature difference between the inside and outside of the refrigerator compartment 2 becomes large, dew condensation occurs on the surface of the double glass 5 and the refrigerator compartment 2
There was a drawback that it was difficult to see the products inside. In addition, there was a risk that water droplets adhering to the surface of the double-glazed glass 5 would fall onto the floor, so it could not be installed on a carpet, for example, and the installation location was restricted. Therefore, some devices installed a heater on the surface of the double-glazed glass 5 to prevent condensation on the glass surface, but in this case, the heater was exposed on the glass surface, resulting in poor appearance. A problem arose. Furthermore, since the condenser 10 used was an air-cooled type, it required a relatively large surface area, which caused problems in miniaturization, and the wind noise during cooling was large, making the entire device noisy. There were also some drawbacks. In addition, condensation occurs in the refrigerator compartment 2, for example on the surface of the evaporator 6, and falls onto the heat insulating wall 4 as condensate, but the condensate in the refrigerator compartment 2 is normally discharged to the outside via a drain pipe etc. and is not used. The reality is that this has not been done.

This idea was created in view of the above circumstances, and its purpose is to prevent dew condensation from forming on the outer peripheral wall of the refrigerator compartment by blowing hot air generated in the machine room onto the outer peripheral wall of the refrigerator compartment. This makes it possible to improve the effect of displaying products, and there is no need to limit the installation space.In addition, the condenser can be made to function efficiently by using the drain generated in the refrigerator, which reduces the size of the condenser and reduces noise. The objective is to provide a case that can reduce the

This invention will be explained below based on embodiments shown in the drawings. 3 to 5 show an embodiment of this invention, and 21 is the main body of the case. Inside this main body 21, a refrigerating chamber 22 is formed in the upper part, and a machine room 23 is formed in the lower part, and the refrigerating room 22 and the machine room 23 are separated by a heat insulating wall 24. The outer peripheral wall of the refrigerator compartment 22 is formed of transparent double glass 25 or the like,
A door for taking out products is formed on one side of the outer peripheral wall. Furthermore, a fluorescent light 26 is installed on the ceiling of the refrigerator compartment 22.
etc., and the inside of the refrigerator compartment 22 is illuminated through a translucent partition plate 27.
Furthermore, a plurality of storage shelves 28 are provided in the refrigerator compartment 22.
... are arranged, and an evaporator 29 and a fan 30 are attached to the bottom. The inside of the refrigerator compartment 22 is cooled by the evaporator 29, and the air inside the refrigerator compartment 22 is circulated by the fan 30. Further, the heat insulating wall 2
A drain port 31 is provided at the bottom of the wall 4, and an inclined surface 32 is formed with the drain port 31 as the lowest part, so that drain that has fallen onto the heat insulating wall 24 is guided to the drain port 31. It's summery.

On the other hand, in the machine room 23, a capacitor 33,
Cooling fan 34, compressor 35, drain tray 36
A duct component 37 and the like are provided.
The condenser 33 includes a drain container 38 having an inverted quadrangular pyramid shape with an open upper surface and the drain container 3.
8 and a refrigerant flow pipe 39 attached to the outer wall surface of the refrigerant. One end of this refrigerant flow pipe 39 is connected to the compressor 35, and the other end is connected to an expansion mechanism (not shown). The drain container 38 is made of, for example, an iron plate or a stainless steel plate, and is attached to the lower surface of the heat insulating wall 24 with its upper opening facing the drain port 31. Further, an overflow port 40 is provided in the upper part of the drain storage container 38, and when the drain stored in the drain storage container 38 becomes full, it passes through a drain pipe 41 connected to the overflow port 40 to the drain tray 36.
It is now being discharged. Further, the cooling fan 34 is provided approximately at the center of the machine room 23 and is designed to cool the condenser 33. Furthermore, the duct component 37 is provided at a certain distance from the condenser 33, and its upper end extends to cover the lower end of the outer peripheral wall of the refrigerator compartment 22, and its lower end is connected to the cooling fan 33. It is formed in a shape that surrounds the . The area near the upper edge of this duct component 37 is located inward (double glass 25
It is bent approximately 45 degrees towards the
2 is formed. A duct is formed between the drain container 38 and the heat insulating wall 24 by the duct component 37, and the cooling fan 34
The air inside the machine room 23 is discharged from the discharge port 42 through the duct and is blown onto the surface of the double-glazed glass 25. Note that a large number of ventilation holes 44 are formed on the side and bottom surfaces of the case 43 of the machine room 23 so that outside air can be taken into the machine room 23.

Therefore, in the case of the above structure, the compressor 35 is cooled by the air taken into the machine room 23 from the outside, and the air in the machine room 23 is further transferred to the compressor 35 by the cooling fan 34.
3, and the compressor 33 is cooled. The air that has cooled the compressor 33 passes through the drain container 38 and the duct formed between the heat insulating wall 24 and the duct component 37, and is discharged to the outside from the discharge port 42. In this case, the air discharged from the discharge port 42 is heated by heat exchange with the compressor 35 and the condenser 33, and becomes hot air. In addition, the discharge port 42
are provided facing each lower end of the double-glazed glass 25, so that the hot air discharged from the discharge ports 42 can be blown onto the surface of the double-glazed glass 25. Therefore, since warm air is constantly blown onto the surface of the double-glazed glass 25, the dew point temperature increases. Therefore, since it is possible to prevent dew condensation from forming on the surface of the double glass 25, the products in the refrigerator compartment 22 can always be kept in an easily visible state, and the display effect of the products can be improved. . Furthermore, since no dew condensation occurs on the surface of the double-glazed glass 25, there is no chance of water droplets falling onto the floor.
Therefore, there is no fear that the installation location will be restricted unlike in the past.

In addition, since the portion near the upper edge of the duct component 37 is bent inward at approximately 45 degrees, the hot air discharged from the discharge port 42 can be reliably passed through the double-glazed glass 25.
can be sprayed onto the surface. Furthermore, since the drain storage container 38 is formed in the shape of an inverted quadrangular pyramid, hot air can be uniformly blown onto the surfaces of each of the four double-glazed windows 25 forming the outer circumferential wall of the refrigerator compartment 22.

On the other hand, when the inside of the refrigerator compartment 22 is cooled, the heat insulating wall 24
The drain that has fallen upward is sent into the drain container 38 through the drain port 31. The drain stored in the drain storage container 38 has a temperature of about 1 to 5°C. Since the water is cooled to a certain degree, the high temperature and high pressure refrigerant gas sent from the compressor 35 can be effectively cooled and condensed (liquefied) within the refrigerant flow pipe 39. Therefore, the surface area of the capacitor 33 can be reduced to about half that of a conventional air-cooled capacitor, which is advantageous in reducing size and cost.
Furthermore, unlike conventional air-cooled systems, it is not necessary to provide a large number of fins in the refrigerant flow pipe 39, so the wind noise caused by the cooling fan 34 does not become as loud as in the conventional case, and it is possible to reduce noise. can.

Note that this invention is not limited to the above embodiments. For example, as shown in FIG. 6, an inverted quadrangular pyramid-shaped drain container 51 is formed of synthetic resin such as plastic, and this drain container 51
A refrigerant flow pipe 52 made of a thin tube, a so-called wire condenser, may be installed around the refrigerant flow pipe 52 . Furthermore, as shown in FIG.
It is possible to more effectively cool and condense the refrigerant gas in 9. In addition, as shown in FIG. 8, a rectangular parallelepiped drain storage container 53 with an open upper surface is formed, and a refrigerant flow pipe 54 is simultaneously formed on the outer peripheral wall of this drain storage container 53 by means such as aluminum roll bonding. Further, the drain storage container 38 may have a shape of a square pyramid with a flat part formed at the bottom as shown in FIG. 9, or may have an arcuate cross section as shown in FIG. You can. Further, as shown in FIG. 11, cross-flow fans 6 are installed in discharge ports 63 formed at the lower ends of each of the four double-glazed windows 62, which are the outer peripheral wall of the refrigerator compartment 61.
4... and the case 6 of the machine room 65.
6 and the duct component 67 may be integrated,
In this way, the configuration can be further simplified.

As explained above, this invention provides a duct component in a machine room, guides hot air generated in the machine room through the duct component, and directs hot air from the outlet formed by the duct component to the refrigerator. Since the spray is applied to the outer peripheral wall of the refrigerator compartment, it is possible to prevent dew condensation from forming on the outer peripheral wall of the refrigerator compartment, thereby improving the product display effect, and there is no fear that the installation location will be restricted. Furthermore, a condenser is configured by a drain storage container and a refrigerant flow pipe,
Drain generated in the refrigerator compartment is stored in the drain container, and the refrigerant in the refrigerant flow pipe is cooled by heat exchange with the drain stored in the drain container and the cooling air flowing outside the drain container. Since the refrigerant in the refrigerant flow pipe is condensed, the refrigerant in the refrigerant flow pipe can be efficiently condensed and the condenser can function efficiently. As a result, the condenser can be made smaller and noise can be reduced.

[Brief explanation of the drawing]

Figures 1 and 2 show a conventional example. Figure 1 is a perspective view showing the external appearance, Figure 2 is a vertical sectional view showing the main structure, and Figures 3 to 5 are one example of this invention. 3 is a vertical sectional view showing the overall configuration, FIG. 4 is a perspective view showing the capacitor, FIG. 5 is a perspective view showing the appearance of the main parts, and FIGS. 6 to 11 are Each shows a different embodiment, and the sixth
The figure is a perspective view of the main part, and FIGS. 7 to 11 are longitudinal cross-sectional views of the main part. 22, 61... Refrigerator room, 23, 65... Machine room, 24... Heat insulation wall, 25, 62... Double glass (outer wall), 29... Evaporator, 31... Drain port, 33... Condenser , 34...cooling fan,
37, 67...Duct component, 38, 51, 5
3... Drain storage container, 39, 52, 54... Refrigerant flow pipe, 42, 63... Discharge port.

Claims (1)

[Scope of utility model registration request] The outer peripheral wall of the refrigerator compartment, the interior of which is cooled by an evaporator, is made of a transparent material, and
In the case where a machine room partitioned by a heat insulating wall is provided below the refrigerator compartment, the machine room is provided on the ceiling surface of the machine room and covers substantially the entire bottom of the heat insulating wall, and is connected to the drain port of the bottom heat insulating wall. A drain container for storing falling drain, a condenser heat-transferably attached to the wall of the drain container, and a discharge outlet for directing air in the machine room along the condenser toward the outer peripheral wall of the refrigerator compartment. 1. A show case comprising: a duct component that guides the air to the outlet; and a fan that sends air in the machine room from the discharge port to the outer circumferential wall of the refrigerator compartment via the condenser and the duct component.