JP2001357962A - Box type panel heating element of heater device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a box type panel heating element in which the temperature control of on/off is done promptly as a whole and a constant temperature is maintained quickly with efficiency. SOLUTION: A plurality of hollow insulators 8 are provided in parallel in a box type panel 7 and a piece of wire heater 9 is inserted sequentially in the hollow insulator 8 to form a box type panel heating element, and by providing this box type panel heating elements longitudinally and laterally a heating device is made for heating and drying goods and articles carried by a conveyer by this box type panel heating elements group. In this box type panel heating element, the heater wire, which is inserted in the plural hollow insulator inside the box type panel, is made a wave form continuous body of a small pitch and a heat-sensitive element 10 is covered by the heat-resistant insulator tube 11 and inserted in the hollow insulator 8. Further the box type panel heating elements having inserted the heat-sensitive element are arranged only in the center and at the prescribed positions in the vicinity of each coroner of the box type panel heating elements group.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-type panel heating element used for a heating apparatus or the like.

[0002]

2. Description of the Related Art Conventionally, when a product conveyed on a conveyor is heated and dried by a heating type device, a large panel body is provided above the conveyor, and a single large panel wound spirally around the panel body. A heating element of a pipe-shaped heater was provided, and articles and the like conveyed by a belt conveyor were passed under the panel body to be heated and dried. However, in this panel body, it took much time for the heating element of one pipe-shaped heater to reach a predetermined temperature, and during that time, the conveyor could not be operated. Further, even after the heating element is turned off after the work is completed, the heating element does not cool down for a long time, so that it is necessary to wait, which is very inefficient.

[0003] Therefore, a small box-shaped panel is provided in place of the heating element of the large pipe-shaped heater, and a plurality of elongated hollow insulators are juxtaposed in the box-shaped panel, and one line heater is used. A box-shaped panel heating element constructed by passing through the plurality of hollow insulators in order is provided, and a plurality of the box-shaped panel heating elements are arranged vertically and horizontally to form a large heating element. By this group of box-shaped panel heating elements, a plurality of box-shaped panel heating elements are heated at the same time, and it becomes very fast as a heating type device to reach a predetermined temperature. Can be turned off at the same time and individually, so that the cooling of the temperature is rapidly rapid, and it has been considered that the work efficiency is very high.

[0004]

However, in this box-shaped panel heating element group, it is difficult to control the temperature as a whole. There is a range of heat retention temperature between the box-type panel heating element that is exposed to much outside air and the box-type panel heating element that is close to the center and hardly exposed to outside air, so it is extremely difficult to maintain a constant temperature as a whole. It was difficult and inefficient.

Accordingly, the present invention has solved the above-mentioned problems of the conventional box-type panel heating element of the heating type apparatus, and has disclosed a box-type panel heating element comprising a plurality of box-type panel heating elements. It is an object of the present invention to provide a box-type panel heating element of a heating type device which aims to efficiently control the ON / OFF temperature of the group as a whole and quickly maintain the temperature at a constant temperature, thereby improving the efficiency.

[0006]

In order to achieve the above object, a box-type panel heating element of a heating type apparatus according to the present invention has a plurality of hollow insulators 8, 8 arranged side by side in a box-type panel 7. A box-shaped panel heating element 4 in which one wire heater 9 is sequentially inserted into a plurality of hollow insulators 8 is provided, and a plurality of the box-shaped panel heating elements 4 are arranged vertically and horizontally to be conveyed by the conveyor 3. In a box-type panel heating element 4 of a heating type device for heating and drying B and the like in the box-type panel heating elements 4 arranged side by side vertically and horizontally,
One wire heater 9 inserted into a plurality of hollow insulators 8 in the box-shaped panel 7 is a corrugated continuum with a small pitch,
The heat-sensitive element 10 is inserted together with the wire heater 9 inserted at the center of the plurality of hollow insulators 8 or at the center closest to the center. The heat-sensitive element 10 is made of a heat-resistant glass tube 11
And is inserted into the hollow insulator 8. Furthermore, the box-shaped panel heating element 4 in which the thermal element 10 is inserted is arranged only at a predetermined position near the center and each corner in the box-shaped panel heating element 4 group.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a schematic view of a conveyor device provided with a heating device according to the embodiment of the present invention, FIG. 2 is a perspective view showing a box-type panel heating element of the embodiment of the present invention, and FIG. FIG. 4 is a longitudinal sectional view of a hollow insulator provided with the heat-sensitive element of the embodiment of the present invention, and FIG. 5 is a longitudinal sectional view of the hollow insulator of the embodiment of the present invention. As shown in FIG. 1, the conveyor device 2 having the heating type device 1 moves the article B or the like placed on the conveyor 3 rotated by the motor M, passes through the inside of the heating type device 1 and heats. , Dry.

The heating apparatus 1 has a plurality of box-shaped panel heating elements 4 arranged above and below the conveyor 3 at a distance from the belt conveyor 3. Article B that has passed through the heating device 1
Is heated and dried by a group of box-shaped panel heating elements 4. Reference numeral 5 denotes an exhaust duct, and reference numeral 6 denotes an exhaust fan that exhausts the exhaust from the exhaust duct 5.

A plurality of the box-shaped panel heating elements 4 are arranged in the heating apparatus 1 in a row and a row. As shown in FIGS. 2 and 3, the box-shaped panel heating element 4 has a plurality of hollow insulators 8, 8 arranged in a box-shaped panel 7. This box-shaped panel 7 is made of metal. A plurality of hollow insulators 8 are arranged, and as shown in FIGS. 2 and 3, eleven hollow insulators 8 may be arranged in parallel, or two or more hollow insulators may be used.

The hollow insulator 8 may be made of porcelain or heat-resistant glass. One wire heater 9 is inserted into the hollow insulator 8, and one end of the single wire heater 9 passes through the box-shaped panel 7, and the inside of the plurality of hollow insulators 8 arranged in parallel is pitched. , Sequentially passing through the opposite side of the box-shaped panel 7.

The single wire heater 9 is made of nickel chromium or iron chromium aluminum, and is formed as a wavy continuum having a small pitch as shown in FIG. This line heater 9 has better thermal efficiency than a linear heater due to a wavy continuum having a small pitch. As shown in FIG. 4, a thermosensitive element 10 such as a thermistor for temperature sensing is inserted together with the wire heater 9 into the center or one of the hollow insulators 8 of the box-shaped panel heating element 4 which is closest to the center. are doing.
The heat-sensitive element 10 is covered with a heat-resistant glass tube 11.

When the heat-sensitive element 10 is covered with the heat-resistant glass tube 11 and inserted into the hollow insulator 8, when the heat-sensitive element 10 and the wire heater 9 come into contact with each other, the contact portion is short-circuited and the current flows. The circuit is as described above, and the danger of current leakage to the outside is sufficiently prevented. As shown in FIG. 4, a single wire heater 9 inserted into the center of the hollow insulator 8 or the one closest to the center of the hollow insulator 8 is corrugated from the wavy position to the position where the tip of the heat-resistant glass tube 11 built in the heat-sensitive element 10 is inserted. When the wire heater 9 is extended in a straight line, the wire heater 9 and the heat-resistant glass tube 11 with the built-in heat-sensitive element 10 can be inserted more smoothly, the thermal efficiency of the wire heater 9 is improved without a large fluctuation, and the wire heater 9 is improved. The tip of the heat-resistant glass tube 11 with the built-in heat-sensitive element 10 is held at the boundary between the wavy portion of the heater 9 and the portion extending straight, and it is not inserted any more, so that stable temperature sensing can be performed. it can.

A plurality of the box-shaped panel heating elements 4 are arranged side by side in the heating device 1 and the like to form a group of box-shaped panel heating elements 4. Of the group of box-shaped panel heating elements, the group is arranged only on the box-shaped panel heating element 4 at a predetermined position close to the center and each corner, and the temperature is detected by each thermal element 10, and the group of box-shaped panel heating elements 4 The entire temperature is maintained and managed at a predetermined temperature. The wire heater 9 of each box-shaped panel heating element 4 is independently O
N, it is set to OFF.

Although the embodiments of the box-type panel heating element of the heating apparatus which are considered to be representative of the present invention have been described above, the present invention is not necessarily limited to only the structures of these embodiments. Having the above-mentioned constituent requirements, and
The present invention achieves the object of the present invention and can be appropriately modified and implemented within the range having the following effects.

[0015]

As is clear from the above description, the box-type panel heating element of the heating type device according to the present invention has a plurality of hollow insulators arranged side by side in the box-type panel and a plurality of hollow insulators. A box-shaped panel heating element through which one wire heater is sequentially inserted is provided in the insulator, a plurality of the box-shaped panel heating elements are arranged vertically and horizontally, and articles and the like conveyed by a conveyor are arranged vertically and horizontally. In a box-type panel heating element of a heating-type device that heats and dries with a box-type panel heating element group, one line heater inserted into a plurality of hollow insulators in the box-type panel has a wavy shape having a small pitch. The heat-sensitive element is inserted together with a line heater inserted in the center of the plurality of hollow insulators or the one closest to the center as a continuous body. Further, the heat-sensitive element is covered with a heat-resistant glass tube and inserted into the hollow insulator. Further, since the box-shaped panel heating element in which the heat-sensitive element is inserted is arranged only at a predetermined position near the center and each corner in the box-shaped panel heating element group, a box including a plurality of box-shaped panel heating elements. It is possible to expect a remarkable effect that the temperature control of ON and OFF of the entire panel heating element group can be quickly and efficiently maintained at a constant temperature and the efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a conveyor device provided with a heating device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a box-type panel heating element according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of the embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a hollow insulator provided with a thermal element according to an embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of the hollow insulator according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Heating apparatus 2 ... Conveyor apparatus 3 ... Belt conveyor 4 ... Box-shaped panel heating element 5 ... Exhaust duct 6 ... Exhaust fan 7 ... Box-shaped panel 8 ... Hollow insulator 9 ... Wire heater 10 ... Heat sensitive element 11 ... Heat resistance Glass tube

Claims (3)

[Claims] 1. A plurality of hollow insulators (8), (8) are juxtaposed in a box-shaped panel (7), and one wire heater (9) is installed in the plurality of hollow insulators (8). A box-shaped panel heating element (4) which is inserted sequentially is provided, and the box-shaped panel heating element (4) is provided.
A plurality of heat-generating devices are arranged in rows and columns, and articles (B) conveyed by a conveyor (3) are heated and dried in a group of box-shaped panel heating elements (4) and (4) arranged in rows and columns. In the box-shaped panel heating element (4), a single wire heater (9) inserted through a plurality of hollow insulators (8) in the box-shaped panel (7) is formed into a wavy continuum having a small pitch. And a box-type panel heat source for a heating-type device characterized in that a heat-sensitive element (10) is inserted together with a wire heater (9) inserted in the center of the plurality of hollow insulators (8) or one closest to the center. body. 2. The box-type panel heating element of a heating type device according to claim 1, wherein said heat-sensitive element (10) is covered with a heat-resistant glass tube (11) and inserted through a hollow insulator (8). 3. A box-shaped panel heating element (4) having a heat-sensitive element (10) inserted therein is arranged only at a predetermined position near the center and each corner in the box-shaped panel heating element (4) group. A box-shaped panel heating element for the heating apparatus according to claim 1 or 2.