JPH0754790Y2 - Showcase - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a showcase, particularly a showcase capable of high-humidity hot storage and high-humidity cold storage.

[Prior Art] In recent years, it has been possible to prepare meals for other people in advance in the cafeteria of a company cafeteria, a dormitory of a dormitory, or a common cafeteria, and display them hot in a showcase for the required meal time. Is required. In this case, the heat storage needs to be performed in a high humidity state in order to prevent the exhibit from drying.

In addition, in the refrigerated showcase proposed by the present inventor in Japanese Utility Model Publication No. 61-49282, it is possible to prevent the exhibit from drying without humidifying the inside and to keep the exhibit fresh for a long time. I have to.

However, both the high-humidity hot storage and the high-humidity cold storage are not limited to long-term use, and depending on the application, it may be difficult to set a single showcase for both hot storage and cold storage as an installation space. Is advantageous in the relationship.

[Problems to be solved by the invention] A technical problem of the present invention is that a show in which both hot and cold storage facilities are accommodated in a very compact manner under the condition that high humidity hot storage and high humidity cold storage are effectively performed. To get the case.

[Means for Solving the Problems] In the showcase of the present invention for solving the above problems, flow paths that are oriented in the up-down direction are formed in the front and rear sides and in the middle of the left and right side plates of the case forming the exhibition room. A duct is provided, and among these ducts, the front duct is used as a suction duct for cool air, and the upper end of the duct is connected to a duct having a suction opening that opens to the front of the lower surface of the top plate of the case. As, the upper end is communicated with a duct having an outlet opening to the rear of the lower surface of the top plate,
A large cooling coil is installed in a wide space below the case partition plate, the suction duct communicates with the suction side of the cooling coil, the blow duct communicates with the blow side of the cooling coil, and the intermediate duct serves as a warm air duct. A heating device and a humidifying device are provided inside, and a hot air outlet at the lower end of the hot air duct is opened in the case, and a hot air intake duct having a hot air inlet opening at the upper end in the middle of the lower surface of the case top plate is provided. It is characterized by being communicated.

[Operation] When the showcase is used for refrigeration, the cool air appropriately cooled by the cooling coil is discharged into the case from the duct at the upper rear part of the case through the blowing duct, and the air warmed and raised in the case is not discharged. , Suction from the front upper duct and return to the cooling chamber through the suction duct. Therefore, the air in the case naturally convects due to its own weight, and it is not necessary to generate a strong air flow by the fan. In this way, if the air in the case is not moved as much as possible and the destruction of the boundary film of each part is suppressed, it is possible to prevent the food in the case from being dried and at the same time perform effective cooling.

On the other hand, when the showcase is used for warming, the air in the case is sucked from the warm air suction duct above the middle of the case, heated by the heating device provided in the warm air duct, and humidified by the humidifier, The heated and humidified air is caused to flow into the case from the warm air outlet at the lower end of the warm air duct. Therefore, even in the case of warm storage, the air in the case can be naturally convected to suppress the destruction of the boundary film of each part, and the dried warm air can prevent the food from drying.

Further, since the side plates of the showcase are effectively used to circulate the air for hot storage and cold storage, both the hot storage and cold storage facilities can be made very compact.

[Embodiment] In the embodiment shown in the drawings, the showcase 1 includes a top plate 2,
The bottom plate 3, the left and right side plates 4, 4, the front plate 5 and the rear plate 6 form a case 7 having a substantially rectangular parallelepiped shape. The front plate 5 and the rear plate 6 have the top plate 2, the bottom plate 3, and the side plates 4, 4 respectively. The windows 8 and 8 for taking out the exhibits are formed with a gap between the windows 8 and 8.
Sliding doors 9 and 9 are fitted in the respective.

Below the bottom plate 3, a refrigerator, its control device, and a steam generator (all not shown) are installed, and a cooling coil 12 of the refrigerator is provided in a wide cooling chamber between the bottom plate 3 and the partition plate 10. Are installed, and cool air flow paths 13 and 13 are formed in front of and behind the coil 12. The large cooling coil 12 has a cooling capacity capable of maintaining the case 7 at a desired temperature without excessively lowering the temperature.

On the other hand, a duct 15 having a downward opening honeycomb type outlet 14, ... Behind the lower surface of the top plate 2, and a downwardly opening duct 15 having a downward honeycomb opening 16 ,. 17 has a hot air inlet opening downward in the center of the bottom surface 1
The warm air suction ducts 19 having the openings 8 are arranged substantially parallel to the front and rear plates, the cool air suction ducts 20 and 20 are located in front of the side plates 4 and 4, and the cool air blowing ducts 21 are located in the rear. 21 and warm air ducts 22, 22 are installed in the vertical direction in the middle (see FIGS. 2 and 3).

The upper ends of the blowout ducts 21 and 21 communicate with the duct 15 and the lower ends thereof communicate with the flow passage 13 on the blowout side of the cooling coil 12, and the suction ducts 20 and 2 are connected.
The upper end of 0 is connected to the duct 17 and the lower end is connected to the flow path 13 on the suction side of the cooling coil 12, and these ducts form a cool air circulation path that connects the cooling chamber and the case 7 (see FIG. 4). ).

On the other hand, the upper ends of the warm air ducts 22 and 22 communicate with the warm air suction duct 19, and the lower ends of the warm air ducts 23 and 23 open into the case 7.
And the heaters 24, 24 for heating and the steam supply pipes 25, 25 for humidification are installed in the warm air ducts 22, 22, and these ducts constitute the warm air circulation path of the case 7. (See FIGS. 2 and 5).

Further, fans (not shown) for circulating cold air and circulating hot air are provided in these circulation paths, and the case 7 has a plurality of shelves 26, ... And lighting equipment 27, ... are installed.

In addition, the top plate 2, the bottom plate 3, the side plates 4, 4, the front plate 5, the rear plate 6
The partition plate 10 and the partition plate 10 are both formed into a double wall having a gap filled with a heat insulating material.

In the showcase 1 having the above configuration, when the fan motor for cold air is rotated, the cool air cooled by the large-volume cooling coil 12 installed in the large cooling chamber flows through the one flow path 13 and the blowing duct 21. The air flowing through the outlets 14 of the duct 15 in the upper rear part of the case 7 to the inside of the case 7 to cool the exhibit, and thereby warm up and rise,
A duct that rises in front of the case 7 and is located above it
Sucked from the suction ports 16, ... Of 17 and returned to the cooling chamber through the suction duct 20 and the other flow path 13 to be cooled again. Therefore, the air inside the case 7 naturally convects due to its own weight, and it is not necessary to generate a strong air flow by the fan.

On the other hand, when the food is to be warmed, the fan motor for hot air is rotated and the heater is energized.
The air in 2 is warmed by the heater 24 and humidified by the steam in the steam supply pipe 25, and the warmed and humidified air is blown into the case 7 from the hot air outlets 23, 23 to warm the food. . The air after heating the food is warm air intake 18,
Is sucked into the hot air suction duct 19 from the air, and is again heated and humidified by the hot air ducts 22 and 22. In this case as well, since it is not necessary to generate a strong flow of air in the case 7 by the fan, it is possible to effectively heat the air as in the case of refrigeration and dry the food with humidified air. It can be prevented.

Since the cooling coil 12 is installed in a large cooling chamber to increase its volume, it has a cooling ability to maintain the case 7 at a predetermined temperature without excessively lowering the temperature of the cooling coil 12, Therefore, the cold air that circulates in the case 7 is less likely to be excessively cooled and deprived of water in the cooling chamber, so that the inside of the case 7 can be prevented from drying.

Further, due to the natural convection as described above, the air inside the case 7 is not moved as much as possible, and the boundary film formed on the surface of food such as meat in the case or the inner surface of the front plate 5 made of a glass plate is destroyed. By preventing the above, the foods can be effectively prevented from being dried, and at the same time, the dew condensation on the glass plate surface of the front plate 5 can be prevented, and the effective cooling can be performed without wasting cold air. Become.

Furthermore, the air heated and humidified by the hot air ducts 22,22 is blown into the case 7 from the hot air outlets 23,23 provided at the lower ends of the ducts to heat the displayed foods, etc. The showcase allows refrigeration and hot storage while preventing the exhibits from drying out.

In addition, cold air suction and blowing, and hot air duct 20 ~
By providing 22 at the front and rear and in the center of the side plates 4, 4, it is possible to make effective use of the space of the side plates and make the showcase for hot and cold storage of food very compact.

[Effects of the Invention] In the present invention, a large space under the partition plate is used as a cooling chamber, and a large cooling coil is installed in this cooling chamber, so that the temperature of the case can be maintained without excessively reducing the temperature of the cooling coil. By providing the cooling capacity necessary for maintenance, it is possible to prevent the air circulating in the case from being excessively cooled by the cooling coil, and thus the circulating air is less likely to lose moisture in the cooling chamber. You can prevent the inside from drying and keep the freshness of the exhibits for a long time.

Further, the cool air cooled to an appropriate temperature by the cooling coil flows into the case from the upper rear part of the case through the blowout duct, and the air warmed and raised in the case is sucked from the suction port above the case to cool the chamber. The air inside the case naturally convects due to its own weight,
There is no need to generate a strong air flow by the fan.

Therefore, do not move the air in the case as much as possible, before the food surface such as meat in the case, or before the glass plate,
It is possible to prevent the destruction of the boundary film formed on the inner surface of the back plate, effectively prevent the drying of those foods, and at the same time prevent the dew condensation on the glass plate surface of the front plate, thus wasting cold air. It is possible to perform effective cooling without consumption.

In addition, the air that has been heated and humidified by the hot air duct is blown into the case from the hot air outlet provided at the lower end of the duct to heat the displayed food, and the dryness of the food is prevented by one showcase. While it can be hot and cold storage.

Furthermore, by providing ducts for blowing and sucking in cool air and warm air in the front and rear and in the center of the side plate, the space can be effectively used to make the showcase for hot and cold storage of food very compact. be able to.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a vertical sectional front view, Fig. 2 is a vertical sectional side view, Fig. 3 is a transverse rear view, and Figs. 4 and 5 are configurations of cold air and warm air circulation paths. It is a perspective view. 1 ... Showcase, 2 ... Top plate, 4 ... Side plate, 10 ...
Partition plate, 12 …… Cooling coil, 14 …… Blowout port, 15,17 ……
Duct, 16 ... Suction port, 18 ... Warm air blowing port, 19 ... Warm air suction duct, 20 ... Suction duct, 21 ... Outlet duct, 22
...... Warm air duct, 23 ...... Warm air outlet, 24 ...... Heater, 25
...... Steam supply pipe.

Claims (1)

[Scope of utility model registration request] 1. A duct for forming a vertically oriented flow path in front and rear and in the middle thereof is provided on the left and right side plates of a case forming an exhibition room, and the front duct of these ducts is a suction duct for cold air. As its upper end is connected to a duct having a suction opening that opens to the front of the lower surface of the case top plate, the rear duct serves as a cool air outlet duct, and the upper end of the duct has an outlet opening to the rear of the lower surface of the top plate. A large cooling coil is installed in a wide space under the case partition plate, the suction duct is communicated with the suction side of the cooling coil, and the blowout duct is communicated with the blowout side of the cooling coil. As a warm air duct, a heating device and a humidifying device are provided inside, and a warm air outlet at the lower end of the warm air duct is opened in the case, and its upper end is opened in the middle of the lower surface of the case top plate. Showcase is characterized in that communicates with the warm air inlet duct having a warm air inlet.