JPS6249156A - Show case - Google Patents

Abstract

PURPOSE:To make it possible to increase the heating speed and prevent risks such as burns and the like from occurring by providing a wall heater and a hot air flow fan heater, and sensing and controlling the heat thereof by means of a temperature sensing element. CONSTITUTION:A beat insulating wall 8 has therein a heater 11. The plate heater 11 is brought into contact with an upper plate 8a on the side of a heat storage chamber 9, and on the upper plate 8a is mounted a thermostat 35 for the plate heater which will be described later. At the upper part of the heat storage chamber 9 is mounted a hot air flow fan heater 14, and in the vicinity of a blow-off port 15b of a duct 15 is mounted a thermostat 18 for the hot air flow fan. The action of the plate heater 11 is controlled by the thermostat 35, and the hot air flow heater 14 is controlled by a thermostat 18. While effectively controlling the heaters as described above, a forced convection of the hot air flow due to the hot air flow fan heater 14 is conducted in addition to the heat generation of the plate heater 11 whereby the heating speed is positively increased, and even if one's hand touches the upper plate 8a, one gets no burns.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a showcase with mR functionality.

[Technical background of the invention]

2. Description of the Related Art In general, showcases installed in shops and the like include those shown in FIGS. 6, 7, and 8.

Reference numeral 1 denotes a showcase main body, with a transparent glass case 2 provided on the west side to form a storage chamber therein, the lower side of which serves as a door 3 that can be opened and closed to allow the contents to be taken in and out. A heat insulating wall B is provided in the accommodation chamber A at a predetermined position in the vertical direction, and the heat insulating wall B separates the accommodation chamber into a refrigerating room C and a greenhouse room. The heat insulating wall B has a heater H inside. On the other hand, a compressor 21. Condenser 22, condenser fan 23. Evaporator 24. A refrigeration system consisting of an evaporator fan 25, etc. is provided, of which the evaporator 2
4 and the evaporator fan 25 are isolated from the outside by a heat insulating material 26 and communicated with the upper refrigerator compartment C.

That is, the contents in the refrigerator compartment C are cooled by the freezing device, and the contents in the greenhouse are heated by the heat generated by the heater H provided in the heat insulating wall B.

Therefore, in such a showcase, in order to improve the heating rate of the contents stored in the warm storage room, the capacity of the heater H is increased or the heater H is brought into direct contact with the upper plate of the heat insulating wall B. This is what is normally done.

[Problems with background technology]

However, in this case, while the temperature of the upper plate of the insulation wall B becomes extremely high, around 90°C, the temperature does not rise that much in the upper part of the greenhouse, and a sufficient heating effect cannot be obtained. That was the actual situation.

In other words, even if the stored items are placed on the upper plate of the insulating wall B, the stored items will only partially contact the upper plate (line contact for canned drinks), improving the heating rate. I can't expect much.

For this reason, it was particularly unsuitable for storing beverages in paper containers (for example, 200m brickbacks).

Further, the upper plate is in a position that is easily touched when the door is open, and there is therefore a risk of getting burned when taking out or putting in products.

[Purpose of the invention]

This invention was made in view of the above circumstances,
The purpose of this is to be able to obtain a sufficient heating effect on the stored items without being affected by the shape or material of the container, thereby making it possible to improve the heating rate, and to prevent burns caused by burns. The purpose of the present invention is to provide a highly reliable showcase that also makes it possible to avoid dangers such as this and to improve energy saving effects.

[Summary of the invention]

This invention provides a heater on the wall of the containment chamber, and
A hot air fan heater is provided in the storage chamber, and the stored items are heated by the warm air blown from the hot air fan heater and the heat generated by the heater.

[Embodiments of the invention]

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

First, the appearance is the same as in FIGS. 6 and 7.

As shown in FIGS. 1, 2, and 3, the upper part of the main body 1 is a fluorescent lamp cover 4, and a fluorescent lamp mounting plate 5 is provided inside this fluorescent lamp cover 4. There is. The fluorescent lamp mounting plate 5 supports a circular fluorescent lamp 6 via a socket (not shown), and also supports a warm air fan motor 16M. A translucent storage chamber top plate 7 is provided below the fluorescent lamp 6.

A heat insulating wall 8 is provided in the accommodation chamber at a predetermined position in the vertical direction, and the heat insulating wall 8 separates the accommodation chamber into a hot storage room 9 and a cold storage room 10. The heat insulating wall 8 has a heater (hereinafter referred to as a plate heater) 11 and a heat insulating material 12 inside, and the plate heater 11 is brought into contact with the upper plate 8a on the greenhouse chamber 9 side.

Further, a vent hole 12 is formed at the peripheral edge of the heat insulating wall 8, and a damper 13 is provided in the vent hole 12 so as to be openable and closable. That is, by opening the damper 13 as shown by the broken line in the figure, the hot storage compartment 9 and the refrigerator compartment 10 are brought into communication. Although not shown, the upper plate 8 of the heat insulating wall 8
A plate heater thermostat 35, which will be described later, is attached to a. This thermostat 35 is, for example, 4
It turns on at 5°C and turns off at 55°C.

A hot air fan heater 14 is attached to the upper part of the greenhouse chamber 9, for example, to the lower surface of the storage chamber top plate 7.

The hot air fan heater 14 includes a duct 15, a hot air fan 16, a hot air heater 17, and the like.

The duct 15 has a shape that extends in the left-right direction of the warm storage v9, and has an inlet 15a at one end and an outlet 15b at the other end.
have. The hot air fan 16 is located approximately in the middle of the duct 15, and its rotating shaft passes through the duct 15 and the storage chamber top plate 7 and is connected to the hot air fan motor 16M.

Due to space constraints, the hot air heater 17 is, for example, a PCT.
Installing a heater. This thermostat 18 is
For example, it turns on at 50°C and turns off at 60°C.

Furthermore, the warm storage v9 is provided with a detachable middle shelf 19 for placing stored items. This middle shelf 19 has four legs, and the legs allow the vertical position of the greenhouse 9 to be adjusted. A mounting plate 20 made of, for example, aluminum and having good thermal conductivity is similarly removably provided on the middle shelf 19.

Note that the refrigerator compartment 1 is
Cooling within 0 is performed.

FIG. 4 shows the ff1ll te1 circuit. 330 is a commercial AC power supply, and the evaporator fan motor 25 is connected to this power supply 30.
N4 is connected. Furthermore, a compressor motor 21M and a condenser fan motor 23M are connected to the power supply 30 via a control switch 31. Here, the control switch 31 is turned on when the temperature inside the refrigerator compartment 10 exceeds a set value, and turns off when the temperature within the refrigerator compartment 10 is below the set value, based on the temperature detected by a refrigerated space temperature sensor (not shown). Furthermore, a fluorescent lamp 6 is connected to the power source 30 via a fluorescent lamp switch 32. The plate heater 11 is connected to the power supply 30 via the power supply 5 in series. The hot air heater 17 is connected to the power source 30 through a hot/refrigerating switch 33a, 33b1 fuse 34, and a hot air heater thermostat 18 in series. A hot air fan motor 16M is connected to the power supply and i30 via hot/refrigerating changeover switches 33a, 33b and a fuse 34 in series.

Next, the operation of the above configuration will be explained with reference to FIG.

When performing both heating and cooling, close the damper 13 and turn the heating/refrigeration switch 'f'33a.

33b is turned on. However, when the power supply 30 is turned on,
The evaporator fan 25 operates to circulate the air in the cooling chamber 10 through the evaporator 24. At this time, refrigerator compartment 10
Since the temperature inside is still higher than the set value, the control switch 31 is turned on and the compressor 21 and the condenser 7 are operated. Thereby, the inside of the refrigerator compartment 10 is cooled. On the other hand, the fan 16 operates at the same time as the power supply 30 is turned on, and the air inside the greenhouse 9 is sucked in through the suction port 15a'' of the duct 15. It is squirted inside. In other words, the air in the warm storage v9 circulates clockwise when viewed from the 513 side. Furthermore, since the temperature in the hot storage room 9 is not yet high, both the hot air heater thermostat 18 and the plate heater thermostat 35 are turned on, and the plate heater 11 and the hot air heater 17 are operated. When the plate heater 11 operates, the heat generated by the plate heater 11 causes the heat insulating wall 8 to
The upper plate 8a is heated. In addition, the hot air heater 17
When operated, warm air is blown out from the outlet 15b of the duct 15. As a result, the inside of the temperature R'l 9 is heated.

However, when the temperature inside the refrigerator compartment 10 falls below the set value,
The control switch 31 is turned off, and the operation of the compressor 21 and condenser fan 23 is stopped. That is, cooling is interrupted, and only air circulation is performed within the greenhouse 10 by the operation of the evaporator fan 25.

Further, when the temperature sensed by the plate heater thermostat 35 reaches 55° C., the plate heater thermostat 35 is turned off and the operations of the play 1 to the heater 11 are stopped. When the temperature sensed by the plate heater thermostat 35 drops to 45°C, the play 1 to heater thermostats 35 are turned on and the plate heater to heat 11 are turned on.
works again. On the other hand, hot air peak thermostat 1
When the detected temperature of No. 8 reaches 60° C., the hot air heater thermostat 18 is turned off and the operation of the heater 18 of No. 4111 is stopped. Then, when the temperature sensed by the m1ll heater thermostat 18 falls to 50° C., the hot air heater thermostat 18 is turned on and the hot air heater 11 operates again. However, the warm fan 16 continues to operate regardless of whether the hot air heater 17 stops operating, and thereby the air in the hot storage chamber 9 is constantly stirred.

In this way, by performing forced convection of heat by the warm air fan heater 14 in addition to the heat generated by the plate heater 11, it is possible to efficiently warm the entire interior of the stored seedlings 9. Therefore, whether the stored contents are canned beverages or paper container beverages, a sufficient heating effect can be obtained for the stored contents, and the heating speed can be reliably improved (approximately twice that of conventional methods). . In particular, the plate heater 11
The amount of heat generated by the heat insulating wall 8 is only about half that of the conventional one, so even if your hand touches the upper plate h 8 a of the heat insulating wall 8, there will be no ignition. Moreover, the power consumption is reduced by the amount of heat generated by the plate heater 11, and the energy saving effect can be improved.

By the way, when performing only refrigeration, it is sufficient to turn on the power supply 30 with the hot/refrigerated changeover switches 33a and 33b turned off. In this case, if the damper 13 is closed, only the inside of the refrigerator compartment 10 is cooled. Further, if the damper 13 is opened, the hot storage room 9 and the cold storage room 10 are communicated with each other, and cooling can be performed in the space between them. In addition, wet
Regardless of refrigeration or only refrigeration, turning on the fluorescent lamp switch 32 turns on the fluorescent lamp 6, and the interior of the storage room can be illuminated.

In the above embodiment, the heater was provided on the heat insulating wall separating the hot storage room and the cold storage room, but in the case of a showcase having only a warming function, it may be provided on the inner wall of the storage room.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to obtain a sufficient heating effect on the stored items without being affected by the shape or material of the container for the stored items, thereby making it possible to improve the heating rate. Moreover, it is possible to provide an excellent showcase that can reduce dangers such as burns and improve energy saving effects.

[Brief explanation of the drawing]

FIG. 1 shows the structure of an internal mechanism of an embodiment of the present invention. Fig. 2 is a perspective view of the hot air fan heater in the same embodiment, Fig. 3 is a perspective view of the middle shelf reading and mounting plate in the same embodiment, and Fig. 4 shows the configuration of the control circuit in the same embodiment. 5 is a diagram for explaining the operation of the same embodiment, FIG. 6 is an external front view of the same embodiment and a conventional showcase, and FIG. 7 is an external appearance of the same embodiment and a conventional showcase. A side view, FIG. 8, is a diagram schematically showing the internal configuration of a storage chamber in a conventional showcase. 1... Showcase body, 8... Heat insulation wall, 9...
Green room, 10... Refrigerator room, 11... Plate heater, 14... Hot air fan heater, 17... Hot air heater, 18... Thermostat for hot air heater, 35...
Thermostat for plate heater. ('1') Ll”) (%
JCJ('J?(S4 figure time → figure 5 figure 8

Claims (1)

[Claims] A heater is provided on the wall of the containment chamber, a warm air fan heater is provided in the containment room, and a control means is provided for controlling the warm air blown from the warm air fan heater and the heat generated by the heater using a temperature sensing element in the containment room. Featured showcase.