JPH03215299A - Far infrared ray heater for dishcloth dryer - Google Patents

Abstract

PURPOSE:To dry dishcloths well without migration and property change of chemicals imparted to the dishcloths, by a method wherein heating air pipes are gathered and formed into a heating panel having a flat surface which is coated with ceramic capable of radiating far infrared rays and used as a far infrared ray heater. CONSTITUTION:To form a panel heater 4, adjacent raw material pipes (a) and (b) are welded together, openings on both ends are sealed tight by cover plates 5, and an inlet and outlet of superheated steam are provided at the ends of the raw material pipes 1a on both sides. The surface of the heater 4 is coated with ceramic capable of radiating far infrared rays, and the heater 4 is arranged in parallel with the transfer passage of dishcloths. Then, when steam having a temperature of, for example, 170-180 deg.C, is supplied into the heater 4, far infrared rays are radiated to dishcloths 9 to dry them. Thereby, treated cloths having an excellent quality can be produced without migration and property change of components of dye and resin of the dishcloths.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a novel far-infrared heater used for drying a continuous length of fabric.

[Conventional technology]

Conventionally, there are various methods of drying industrially produced long fabrics such as woven fabrics, knitted fabrics, and non-woven fabrics after continuous liquid treatment. Dryers that use a heat source and dryers that use hot air are known. The above dryers that use electricity or gas as a heat source have a hot plate formed by arranging a large number of heating wires or a large number of gas burners in a plane, and this hot plate is placed parallel to the fabric transfer surface. Infrared rays or far infrared rays are emitted toward the surface of the fabric that is continuously transported to perform the desired drying.

[Problem to be solved by the invention]

However, in a hot plate formed by arranging a large number of heating wires or gas burners in a plane, the heat distribution is uneven between the heating wires or gas burners on the hot plate and on the heating wires or gas burners. There was a problem in that the fabric being transported was dried unevenly due to the difference in the drying time. In addition, the high temperature part of a heating plate using electric heating is about 600°C, and when using gas, the temperature is about 800°C. However, due to the high temperature, the dye migrates to the dry side of the fabric, resulting in uneven dyeing and inability to dye clearly. Furthermore, when a fabric coated with a resin liquid is dried, the resin rises to the surface of the fabric due to its high heat, making it impossible to achieve high-quality resin processing. Furthermore, in the case of the above-mentioned high-temperature dryer, since the preheating of the heater is large, for example, when the fabric transfer machine is stopped, a part of the fabric is burnt out due to the preheating.

Also, in the case of a dryer that uses hot air, the drying heat is strong near the hot air injection port, but the drying heat is rapidly reduced in areas farther away from the injection port, which naturally causes the same uneven drying. In the case of this dryer that uses hot air, the drying temperature is approximately 120 to 130°C, and infrared radiation is not possible, so the drying speed is slow, and the flow of hot air blown onto the fabric is slow. As a result, drying progresses from both sides of the fabric toward the center of the fabric, resulting in dye migration as the drying progresses, resulting in uneven dyeing. [Means for Solving the Problems] The present invention has been made by focusing on the problems and defects of the conventional art, and its first purpose is to reduce the surface temperature by using super heat steam as a heat source. A heating panel in the form of a flat plate that can be adjusted to the drying temperature of the fabric, for example, 170 to 180° C., is configured to uniformly dry the entire fabric surface in a substantially airless atmosphere. The second purpose is to use a ceramic material that can emit far infrared rays on the surface of the heating panel that is heated by the steam, in order to emit far infrared rays to increase the drying efficiency of fabrics. An object of the present invention is to provide a heater formed by coating.

(Example) The present invention will be explained in detail below based on an example shown in the drawings. 6 la, lb are metal material pipes cut to a predetermined length W, lb is a square pipe with a square or rectangular cross section.The shape of the material pipe 1a is as shown in Fig. 3(a), with a notch 2 formed in the side surface of one end of the material pipe 1a. The other end is only open and no notch is formed.The shape of the material pipe lb is as shown in Figure 3 (mouth), with a notch 2 on the side of one end. A notch 2 having the same shape as the above-mentioned notch 2 is formed on the opposite side of the other beveled portion, that is, on the symmetrical plane bordering on the axis of the pipe material 1b.

Next, we will discuss the manufacture of a heater using the above-mentioned material pipes la and lb. A large number of material pipes 1b are arranged side by side in a plane, and at this time, the notches 2 provided in the adjacent material pipes 1b are Combine so that they match each other,
Then, the notches 2 formed in the material pipe 1a are placed in the notches 2 of the material vibrator 1b located on both outer sides.
The adjacent material pipes a are fixed to each other by welding 3, and the periphery of the notch support 2 is roughly welded 3 to form a flat heater 4. Each material pipe la. Since both side openings of lb remain open, these openings are hermetically closed by welding closing plates 5, and at the ends of the material vibe 1a located at both ends, there are inflow ports 6 for superheat steam. is provided to form the panel-shaped heater 4.

The surface of the panel-shaped heater 4 obtained in this way has, for example, 170
A ceramic material that can emit far-infrared rays when heated to ~180°C is coated (
coating) to complete the far-infrared irradiation heater.

Examples of this ceramic material include the following A and B.
,C. D. Each material of E is effective.

As shown in FIG. 5, panel-shaped heaters 4 made of ceramic material coated on the surface are arranged parallel to each other along the transport path of the fabric 9 which is meandered by guide rolls 8. 4, the panel-shaped heater 4 is heated to nearly 170 to 180°C by circulating superheated steam generated by the steamer 10 and heated to, for example, 170 to 180°C, and as a result, the ceramic material film is heated to about 170 to 180°C. Due to this action, far infrared rays are radiated to the fabric 9, thereby effectively drying the fabric.

〔Effect of the invention〕

In this way, the present invention constructs a heater panel whose surface is a flat surface by assembling a large number of pipes through which heated air can flow, and in which far-infrared radiation is applied to the surface of the heater panel. This far-infrared heater for fabric dryers is coated with ceramics that can irradiate rays of rays, so the following effects can be obtained.

1. Since it is a windless dryer that does not use hot air, components such as dyes and resins applied to the fabric are not transferred, and high-quality treated fabric can be produced.

2. According to this heater, drying can be performed by irradiating far infrared rays with a high degree of dryness at 170 to 180°C, so that the best drying can be expected without causing fluctuation or deterioration of the chemicals applied to the fabric.

3. Since the heat source for heating the heater is steam, it can be easily obtained in a textile processing factory and is an extremely economical heat source, so that a highly economical drying process can be expected.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the panel heater according to the present invention, Fig. 2 is a side view thereof, and Fig. 3 ({), (
0) is a perspective view of the material for making the heater, FIG. 4 is a perspective view of the essential parts of the heater, and FIG. tS5 is a partial explanatory view of the fabric processing apparatus equipped with the heater. la, lb...Material pipe 2...Notch 3.
...Welding 4...Heater 5...Closing plate 6...Inflow/outlet 7...Ceramics material 8...Guide roll 9...Fabric
lO...Steamer and 4 others Figure 3

Claims (1)

[Claims] 1 A heater panel with a flat surface is constructed by assembling a large number of pipes through which heated air can flow, and the surface of this heater panel is made of ceramics that can irradiate far infrared rays. A far-infrared heater for a fabric dryer characterized by being coated with.