JPH08922Y2 - Heating device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a heating device for heating an object to be heated housed in a housing, and more specifically, for example, can juice or can coffee. The present invention relates to a warming device such as a showcase or a vending machine which is stored in a warm state.

[Prior art]

FIGS. 2 and 3 show a showcase which is an example of a conventional heating device of this type.

FIG. 2 is a horizontal showcase, and FIG. 3 is a vertical showcase.

In each figure, a heating plate 2 is placed in a heat insulating case 1.

The heat insulating case 1 is made of, for example, sheet metal containing pair glass or glass wool.

The heating plate 2 is for mounting the object 3 to be heated on the upper surface thereof and heating the object 3 to be heated, and for example, a cord is provided on the back side of the heating plate 2. The heater 4 is adhered in a predetermined pattern. The cord heater 4 is covered with, for example, glass wool 5 so that heat insulation can be achieved.

In the small type showcase described above,
Usually, the cord heater 4 having a heat capacity equivalent to 600 W is required as an outside air temperature of 15 ° C. and capable of accommodating, for example, 150 juice cans (capacity 250 cc). That is, a capacity of 4 to 5 W is required for each can.

Based on the above-mentioned structure, various showcases have been proposed which are equipped with, for example, a small fan motor for circulation and a variable heating temperature function in response to heating speed, heating efficiency and the like.

[Problems to be solved by the device]

However, in the conventional showcase as described above, when the heating plate 2 is heated, the cord heater 4 is used.
Since the heating temperature distribution is centered on the close contact position, the heating temperature distribution varies depending on the close contact pattern of the code heater 4.

As a result, it is not possible to uniformly heat the object to be heated housed in the showcase.

Therefore, in order to make the temperature distribution in the heating plate 2 uniform, for example, it is conceivable to improve the density of the contact pattern of the code heater 4, but from the viewpoint of the life or safety of the code heater 4. In consideration of the pattern density of the code heater 4, the heating plate 2
In reality, the temperature distribution cannot be improved to the extent that the temperature distribution can be made uniform.

Therefore, the purpose of the book is to provide a heating member (corresponding to the heating plate 2 in the above conventional device) having a structure capable of uniformly heating an object to be heated without increasing the pattern density of the code heater. It is to provide a provided heating device.

[Means for solving the problem]

In order to achieve the above-mentioned object, the main means adopted by the present invention is, in the gist thereof, a heating device for heating an object to be heated housed in a housing, in which the surface of the object to be heated is A heating member provided in the housing so as to be able to be attached and having a space for circulating and circulating the circulating heat medium throughout the inside of the member, and the circulating heat medium in the space of the heating member. And a heating circulation means for heating the heating member as a whole without unevenness.

[Action]

In the heating device according to the present invention, the circulating heating medium (water, oil, etc.) heated by the heating means is circulated in the space of the heating member, so that the heating member is uniformly heated. It

As a result, the object to be heated placed so as to be attached to the heating member is uniformly heated.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. It should be noted that the following embodiments are examples of embodying the present invention and are not of the nature to limit the technical scope of the present invention.

Here, FIG. 1 is a schematic configuration diagram of a showcase according to an embodiment of the present invention.

As shown in FIG. 1, the showcase according to this embodiment is arranged so that it can be attached to the surface of an object to be heated 3 such as can juice or can coffee, and has a fluid (for example, water or oil) inside. A heating member 6 having a space in which a circulating heat medium can be circulated, and the water is heated in order to circulate water in the space of the heating member 6 to uniformly heat the heating member 6. And a heating circulation means 7 for heating.

A plurality of the heating members 6 are arranged in a housing 9 having a heat insulating structure, and a plurality of doors 8, 8, ... For loading / unloading the object 3 to be heated are attached to the housing 9. The heating members 6, 6, ... Are made of, for example, an aluminum roll bond having a space through which a fluid can flow, and the height dimension of the object to be heated 3 and the object 3 to be heated are taken in and out. Considering the space space that allows the movement of the hand when doing, it is arranged in parallel in the vertical direction with the interval dimension.

The plurality of heating members 6 are connected in parallel by a water supply pipe 10 and a drain pipe 11, and the drain pipe 11 is connected to a relatively small tank 12 arranged in the lower portion of the housing 1. Has been done. Further, the water supply pipe 10 is connected to the tank 12 via a circulation pump 13.

Water is stored in the tank 12 and, for example, a small sheathed heater 14 is provided so as to be submerged in water. The sheathed heater 14 is a controller together with the circulation pump 13 and the like based on the temperature of water detected by a temperature sensor 15 such as a thermistor provided in the water supply pipe 10.
Controlled by 16.

As described above, since the sheathed heater 14 is disposed in the tank 12 in a submerged state, the heat exchange efficiency with respect to water is extremely high, and for example, can juice (capacity 250 cc) is used as in the conventional device described above. If it is assumed that 150 sheath heaters are accommodated, the capacity of the sheathed heater 14 may be about 200 to 250 W, and a dramatic energy saving effect can be obtained as compared with the conventional device.

Further, in the device, a water supply pipe 17 is connected to the tank 12, and a safety valve 18 is attached to the pipe 17. A pan 19 is placed below the safety valve 18.

The safety valve 18 is installed with consideration for safety with respect to heated water and steam, and for supplying air in case of an unexpected situation.

The heating means 7 configured as described above has a front surface covered with a door (not shown) that can be opened and closed so that maintenance can be easily performed.

In the showcase configured as described above, the operation of the circulation pump 13 is started by turning on the power switch (not shown) in a state where the tank 12 has been supplied with a predetermined amount of water in advance. At the same time, energization of the sheath heater 14 is started.

The sheath heater 14 is controlled by the controller 16 based on the temperature of the water detected by the temperature sensor 15.

The water heated by the action of the sheath heater 14 is supplied to each heating member 6 via the circulation pump 13 and the water supply pipe 10, and is circulated to the tank 12 via the drain pipe 11. As a result, the heating member 6 is uniformly heated as a whole, and each object 3 to be heated placed on the heating member 6 is uniformly heated.

In this case, since each of the heating members 6 is heated by the water supplied from the common tank 12, there is no temperature unevenness between the heating members 6 and the temperature can be raised extremely efficiently. When the water has a water temperature of 60 to 80 ° C., the object to be heated 3 is controlled to 50 to 60 ° C.

As described above, according to the apparatus of this embodiment, the heating member 6 can be uniformly heated as a whole, so that the object to be heated 3 placed in the state of being attached to the heating member 6 is It is stored in a uniformly heated state. Further, according to the structure of this embodiment,
Extremely high heat exchange efficiency (about 50% compared to conventional equipment)
%), The power consumption is significantly reduced and an extremely excellent energy saving effect is achieved.

Further, in the apparatus, it is possible to shorten the rising time and shorten the heating time for the heating member 6 only by increasing the capacity of the sheath heater 14.

Although the vertical showcase has been described as an example in the above embodiment, the mechanism is also applied to a horizontal showcase, a showcase having a cooling function in addition to the heating function, or a vending machine. It goes without saying that you can do it.

[Effect of device]

As described above, the present invention provides a heating device for heating an object to be heated housed in a housing, which is disposed inside the box so as to be attached to the surface of the object to be heated, and inside the member. A heating member having a space for circulating the circulation heat medium inside and the circulation heat medium is circulated in the space of the heating member to heat the heating member as a whole without unevenness. The heating device is characterized in that the heating medium is circulated in the heating member, so that the heating member is uniformly heated over the entire heating member. Even if the object to be heated is attached to any of the positions, the object to be heated can be uniformly and surely heated. For example, when a plurality of canned coffees are attached to the heating member as the objects to be heated. But all canned coffee can be heated reliably and evenly and efficiently. . Further, in the case of the present invention, since the heat medium flows only in the space inside the heating member, there is no fear of evaporation or scattering to the outside, and therefore the object to be heated may be soiled or moistened. It is completely clean and clean, does not cloud the window glass of the housing, and you can expect the effect of seeing the layout inside the display case well. Further, even if the heat medium is water, there is no fear of rusting the members in the housing or the object to be heated.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a showcase according to an embodiment of the present invention, and FIGS. 2 and 3 are schematic configuration diagrams of conventional showcases. [Description of symbols] 3 ... Heated object 6 ... Heating member 7 ... Heating means 9 ... Housing 10 ... Water supply pipe 11 ... Drain pipe 12 ... Tank 13 ... Circulation pump 14 ... Sheath heater 15 ... Temperature sensor 16 ... Control device

Claims (1)

[Scope of utility model registration request] 1. A heating device for heating an object to be heated housed in the housing, the heating device being disposed in the housing so as to be able to contact the surface of the object to be heated, and circulating throughout the inside of the member. A heating member internally provided with a space for circulating and circulating the heating medium, and a heating circulation for circulating the circulating heating medium in the space of the heating member to heat the heating member as a whole without unevenness. A heating device comprising means.