JP3479247B2 - Heating device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a heating device for continuously heating foods and drinks having fluidity.

[0002]

2. Description of the Related Art Liquid foods and drinks such as soups and juices, and liquid foods and drinks such as paste-like foods and drinks such as miso and kneaded mustard are heated for cooking and sterilization. I have something to do.

In order to heat food and drink having such fluidity, for example, as described in Japanese Utility Model Publication No. 7-26949, an electrode is provided on the inner surface of a pipe for guiding food and drink, and the food and drink itself. There is a device that generates Joule heat by energizing from an electrode.

[0004]

When the food and drink are heated by flowing Joule heat while flowing the food and drink into the pipe as in the prior art, the pipe must be heated in order to increase the heat treatment amount of the food and drink. The cross-sectional area of the electrode must be increased, and the increased cross-sectional area increases the distance between the electrodes. When this distance becomes large, the electric resistance between the electrodes becomes large, and a high voltage must be supplied to the electrodes.

If the distance between the electrodes can be reduced, the voltage can be lowered to allow a large current to flow, but the inner diameter of the pipe must be reduced, and the heating efficiency cannot be increased.

An object of the present invention is to enable efficient heating of food and drink having fluidity by utilizing Joule heat.

[0007]

A heating device of the present invention is a heating device for heating food and drink having fluidity by Joule heat while continuously conveying the food and drink, and each heating device is an odd number of three or more conductive materials. A stack formed by stacking a plurality of heating plates and having a flow gap between the heating plates adjacent to each other, and food and drink supplied from an inlet of the stack are heated in the flow gap. Food and drink supply means to be discharged from the outlet after flowing along the plate, and the heating plates adjacent to each other have different polarities, and the heating plates on both ends of the laminated body have the same polarity between the heating plates. And a power supply unit for supplying electric power to generate Joule heat to the food and drink flowing in the distribution gap, and providing a concavo-convex portion on the surface of the heating plate to distribute the food and drink. Characterized in that the flow becomes turbulent within between.

A heating device of the present invention is a heating device for heating food and drink having fluidity by Joule heat while continuously conveying the food and drink, and comprises a base plate made of an insulating material and an electrode made of a conductive material provided on the base plate. A stack formed by stacking an odd number of heating plates of three or more having a plate and having a flow gap between the heating plates adjacent to each other, and a food and drink supplied from the inlet of the stack. Food and drink supply means for discharging the substance from the outlet after flowing along the heating plate in the flow gap, and the electrode plates adjacent to each other have different polarities,
The electrode plates on both end sides of the laminate have the same polarity to supply electric power between the electrode plates, and a power supply unit for generating Joule heat to the food and drink flowing in the flow gap, and the electrode plate is It is characterized in that it has a current-carrying surface deviated from the surface of the base plate, and the food and drink flow between the electrode plate and the base plate in a turbulent flow in the current-carrying gap.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing the whole of a heating apparatus according to an embodiment of the present invention, and FIG. 2 is A- in FIG.
FIG. 3 is a cross-sectional view taken along the line A, and FIG. 3 is an exploded perspective view showing a part of members constituting the heating device shown in FIGS. 1 and 2.

This heating device comprises 13 heating plates 11
And a spacer 13 formed by alternately stacking 14 spacers 12 are provided. Heating plate 11
Is generally rectangular as shown in Figure 3,
It is made of a conductive material such as titanium and has the same shape. The spacer 12 has substantially the same length and width dimensions as the heating plate 11, has a frame shape with a notch in the center, and is made of an insulating material such as plastic or rubber, and has the same shape. Has become.

As shown in FIG. 2, by alternately arranging the heating plates 11 and the spacers 12 and stacking them, in the laminated body 13, the heating plates 11 and the spacers 12 which are adjacent to each other are formed. The enclosed circulation gap 14 will be formed.

A communicating hole 15 is formed at one end of the heating plate 11 as shown in FIG. 3, and as shown in FIG. 2, the communicating holes 15 of the heating plates 11 adjacent to each other are on opposite sides. The heating plates 11 are stacked with the spacers 12 interposed therebetween so as to be positioned. As a result, the food and drink flows in the circulation gap 14 so as to meander in the laminated body 13 in the vertical direction in FIG.

Through holes 16 are formed at the four corners of the heating plate 11, and through holes 17 are formed at the four corners of the spacer 12 so as to correspond to the through holes 16, and the heating plates 11 and the spacers 12 are alternately laminated. Through holes 16 and 1
The fastening rod 18 is passed through the inside of the laminated body 7 and the nut 19 is screwed to the tip of the fastening rod 18 to form the laminated body 13
Can be easily assembled, and the laminated body 13 can be easily disassembled by removing the fastening rod 18, and the disassembled structure can heat the heating plate 11 and the spacer 12.
Can be washed.

At both ends of the laminated body 13, end plates 21 and 22 made of metal such as stainless steel are fastened to the fastening rod 18.
Is attached by the one end plate 21
An inflow port 23 is provided in the other end plate 22.
An outlet 24 is provided in the.

As shown in FIG. 2, the container 2 is used to supply the fluid food and drink contained in the container 25 to the heating device.
A pump 27 is provided in the flow path 26 connected between the inlet 5 and the inflow port 23, and the food and drink supplied to the inflow port 23 of the laminated body 13 by the pump 27 is first fed to the end plate 21 and the drawing. In FIG. 2, the heating plate 11 flows from one end side to the other end side through the flow gap 14 between the heating plate 11 and the left end side. The leftmost heating plate 11 and the rightmost heating plate 11 are connected through the communication hole 15.
It flows from the other end side of the heating plate to the one end side through the flow gap 14 between the two. In this way, the food and drink is the laminate 1
It flows in the inside of 3 in a meandering manner from one end side to the other end side of the heating plate 11 and flows out from the outlet 24 to the outside, and the flow path 26 constitutes a food and drink supply means.

The laminate 13 shown in the figure has 13 heating plates 11 as shown by circled numbers 1 to 13 in FIG. 1, and each heating plate 11 is connected to a power supply unit 28 by wiring. The power supply unit 28 supplies commercial power or high-frequency power to each heating plate 11, and the power supply unit 28 and the wiring constitute power supply means. The power supply unit 28 and each heating plate 11 are wired so that circled numbers 1 and 13 on both end sides of the laminated body 13 are provided.
The heating plates 11 are connected so as to have the same polarity, and the heating plates 11 adjacent to each other have different polarities.

As described above, if the number of the laminated bodies 13 is three or more and the number of the heating plates 11 adjacent to each other is different, the heating plates 11 having the circled numbers 1 and 13 on both ends have the same polarity. Therefore, a potential difference does not occur at both ends of the laminated body 13, a leakage current can be prevented from flowing from the laminated body 13 to the outside, and a highly safe heating device can be obtained. That is, the laminated body 13 is replaced with an even number of heating plates 1.
When it is set to 1, the heating plates 11 on both end sides have different polarities, and a potential difference is generated at both ends of the laminated body 13. However, the odd number eliminates the potential difference.
The respective end plates 21 and 22 are grounded as shown in FIG.

A pair of heating plates 1 adjacent to each other
Since 1 has a different polarity, an electric current flows from the heating plate 11 to the food and drink flowing through the flow gaps 14 between the heating plates 11, Joule heat is generated in the food and drinks, and the food and drink flow gaps 14 are generated. It can be heated while being transported inside.

The laminate 13 shown in the figure has 13 heating plates 11, but the number of heating plates 11 is 3.
As long as it is an odd number of sheets or more, the number can be arbitrarily set according to the heating capacity.

On both sides of the heating plate 11, there is a flow gap 14
Therefore, the volume for Joule heating can be increased without increasing the volume of the entire laminated body 13, and the heating device is small and has good heating efficiency. Moreover, by stacking the heating plates 11 to form the flow gaps 14 between the heating plates, the space between the heating plates can be narrowed while ensuring the space where the food and drink flow, so that the voltage to be supplied can be reduced. Even if the value is lowered, the current value can be increased and the food and drink can be efficiently heated.

The heating plate 11 is formed by pressing a plate material. As shown in FIGS. 2 and 3, the flow gap 1 of the heating plate 11 is pressed during pressing.
The concave-convex portion 31 is formed in the portion where 4 is formed. The uneven portion 31 has a protrusion on one surface of the heating plate 11 and a recess on the other surface. Therefore, the food and drink flowing in the flow gap 14 becomes a turbulent flow, that is, a turbulent flow in the uneven direction, that is, the horizontal direction in FIG. 2, and the food and drink not only flow along the heating plate 11 but also the heating plate 11. A flow that collides with the surface is generated, and the food and drink are stirred while flowing. As a result, the food and drink are heated in each of the flow gaps 14 to prevent the occurrence of temperature unevenness and to have a uniform temperature.

In the case shown in FIG. 3, three concavo-convex portions 31 are provided, but the number and height of the concavo-convex portions can be arbitrarily set, and the heating plate 11 can be provided without providing the concavo-convex portions 31. You may make the surface of the whole flat.

FIG. 4 is a view showing a modification of the heating plate 11. In this case, the uneven portion 31 is provided so as to be displaced in the width direction of the heating plate 11. Therefore, when this heating plate 11 is used, the food and drink flowing in the circulation gap 14 becomes a turbulent flow in the width direction of the heating plate 11, and the stirring effect of the food and drink can be further enhanced.

FIG. 5 is a view showing another modified example of the heating plate 11, in which a plurality of strip-shaped convex portions 32 extending obliquely in the width direction are provided on both surfaces of the heating plate 11. In this way, the flow in the circulation gap 14 can be disturbed also by providing the convex portion 32 on the surface. In addition, the convex portion 32
Instead of this, a recess or groove may be formed on the surface of the heating plate 11.

FIG. 6 is a view showing still another modification of the heating plate 11, which has a base plate 11a made of a synthetic resin which is an insulating material and an electrode plate 11b. The plate 11b is insert-molded so as to be embedded therein when the base plate 11a is resin-molded. A recess 33 is formed in the base plate 11a to expose the surface of the electrode plate 11b embedded therein to the outside, and the heating plate 11 is configured such that the electrode plate 11b is partially exposed. As a result, the surface of the electrode plate 11b is
The recessed portion 33 is displaced by the depth dimension, and an uneven portion that disturbs the flow of food and drink is formed in the circulation gap 14.

The outer peripheral portion of the base plate 11b in the heating plate 11 shown in FIG. 6 is thicker than the other portions, and that portion serves as the spacer portion 34. As described above, since the heating plate 11 shown in FIG. 6 has the spacer integrally formed on the outer peripheral portion thereof, when assembling the laminated body 13 using the heating plate 11, the spacer 12 as shown in FIG. 2 is used. Without heating, the heating plate 11 is brought into contact with the spacer portion 34 to be laminated. The spacer portion 34 may be provided only on one surface of the heating plate 11.

FIG. 7 is a view showing still another modified example of the heating plate 11. This heating plate 11 also has a base plate 11a made of synthetic resin and an electrode plate 11b, and is formed on the surface of the base plate 11a. The electrode plate 11b is disposed in the recess 35 formed. In this type of heating plate 11, the electrode plate 11b is connected to a power supply terminal by a lead wire or the like provided on the base plate 11a. Also in the heating plate 11 shown in FIG. 7, as in the case shown in FIG.
You may make it provide a spacer part in the outer peripheral part of the base plate 11a.

In the heating apparatus of the present invention, various foods and drinks can be heated from foods and drinks having high fluidity such as juice and soy sauce to foods and drinks having high viscosity and low fluidity such as miso. it can. When heating a food or drink having such fluidity, while conveying in the circulation gap 14,
Since the laminate 13 is made to meander and flow, a sufficient current can be made to flow at a low voltage, and food and drink can be efficiently heated.

It is needless to say that the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the scope of the invention.

For example, the number of heating plates constituting the heating device is not limited to that shown in the figure, and an arbitrary number can be set as long as it is an odd number according to the kind of food and drink.

[0032]

According to the present invention, food and drink having fluidity are caused to flow in the flow gap between heating plates, and electric power is supplied to the heating plate to generate Joule heat in the food and drink. Since the food is heated, the food and drink can be efficiently heated. Further, it is possible to prevent the heating temperature of the food and drink from varying in the distribution gap, and it is possible to heat the food and drink at a uniform temperature as a whole.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire heating device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is an exploded perspective view showing a part of members that constitute the heating device.

FIG. 4 is a perspective view showing a modified example of a heating plate.

5A is a front view showing a modified example of the heating plate, and FIG. 5B is a sectional view taken along line BB in FIG. 5A.

FIG. 6 is a cross-sectional view showing a modified example of the heating plate.

FIG. 7 is a cross-sectional view showing a modified example of the heating plate.

[Explanation of symbols]

11 heating plate 12 spacers 13 laminate 14 Distribution gap 15 communication holes 16, 17 through holes 18 Fastening rod 19 nuts 21, 22 End plate 23 Inlet 24 Outlet 25 containers 26 channels 27 pumps 28 power supply unit 31 uneven part 32 convex 33 recess 34 Spacer 35 recess

Claims (2)

(57) [Claims] 1. A heating device for heating food and drink having fluidity by Joule heat while continuously conveying the food and drink, which is formed by laminating an odd number of heating plates of three or more conductive materials. A stack having a flow gap between the heating plates adjacent to each other, and a food or drink supplied from an inlet of the stack flows through the flow gap along the heating plate and then discharged from an outlet. The food supply means and the heating plates adjacent to each other have different polarities, the heating plates on both ends of the laminated body have the same polarity, and electric power is supplied between the heating plates to flow in the flow gap. possess a power supply means for generating Joule heat to food, an uneven portion is provided on the surface of the heating plate, the food is
A heating device, wherein the heating device is configured to flow in a turbulent flow in the flow gap . 2. A heating device for heating food and drink having fluidity by Joule heat while continuously conveying the food and drink, comprising a base plate made of an insulating material and an electrode plate made of a conductive material provided on the base plate. Formed by stacking an odd number of heating plates, one or more,
A laminate having a flow gap between the heating plates adjacent to each other, and the food and drink supplied from the inlet of the laminate is flowed along the heating plate in the flow gap and then discharged from the outlet. The food and drink supply means and the electrode plates adjacent to each other have different polarities, the electrode plates on both end sides of the laminated body have the same polarity, and electric power is supplied between the electrode plates, and the food and drink flows in the distribution gap. Power supply means for generating Joule heat in the electrode plate, the electrode plate has a current-carrying surface deviated with respect to the surface of the base plate, the food and drink between the electrode plate and the base plate A heating device characterized in that it flows in a turbulent flow inside.