DE2323662A1 - METHOD AND EQUIPMENT FOR HEATING CYLINDERS OR BARRELS - Google Patents

Description

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Rennerle 10 - Poet compartment 3160

1 ° ^{May 1973}

HUNT & MOSCROP LIMITED,
Apex Works, Middleton,
County of Lancaster / England

Method and device for heating cylinders or vessels

This invention relates to improvements in heaters for cylinders or vessels for use in textile-paper and other industries.

Heated cylinders over which material flows are well known and are the object of the present invention Invention is an improved method

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Telephone Fernechrefcer Office hours Bank accounts: Postal check account: Lindau (08382) 6917 064374 by arrangement Bayer. Vereinsbank Undau (B) No. «62 Munich 29620-800 Kfe .: Fu 2681897 BayerHypotheken-u.W Wechsel -Bank Undau (B) No. 278 920

of heating the cylinders to achieve a constant temperature.

A method of heating cylinders or vessels, To achieve a constant surface temperature, partially filling the cylinder includes or Vessel with a liquid, evacuating the air from the cylinder or vessel and that Sealing the outlet, heating the liquid in the cylinder or vessel which will boil, and evaporating and condensing at a temperature corresponding to the temperature in the vessel and controlling the temperature by limiting the heat input.

The invention is described with reference to the accompanying drawings.

It shows:

Fig. 1 is a front view of a rotating heated cylinder;

Fig. 2 is a side view of the same;

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Fig. 3 is a sectional view of the same on a larger scale;

4 shows a sectional view of a stationary heating vessel;

5 shows a longitudinal sectional view through a further arrangement;

Fig. 6 is a cross-sectional view of the same.

In the construction shown in FIGS. 1 to 3, a cylinder 1 is closed on both end faces and formed with two concentric inner cylinders 2 and 3.

A heating means is placed in the annular space between the inner cylinder 3 and the central cylinder 2 inserted and the annular space between the outer cylinder 1 and the central cylinder 2 is partial filled with water or other liquid. When the water or liquid is heated, steam is produced, which expels dry air through an outlet 4 which is sealed once all air is evacuated has been. Air can also be evacuated through a suction pump.

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In order to achieve a constant temperature for the outer surface of the cylinder 1, the water or the other liquid heated by the heating means in the annular space between cylinders 2 and 3, which the liquid in the annular space between the outer cylinder 1 and the central Cylinder 2 evaporates, and by controlling the steam 'temperature, a constant temperature is maintained around the The circumference of the cylinder 1 is obtained.

A number of guide surfaces 5 or stirring strips are provided which extend radially from the cylinder 2 extends outside to the boiling liquid or the Causing steam to rotate as the cylinder rotates, thereby keeping the peripheral temperature constant to support. The cylinder 1 is mounted on a shaft that extends through the end face Caps extends.

A stationary heating surface of constant temperature is obtained, as shown in FIG. 4, in which a closed vessel Io is formed with a chamber 11, which is partially filled with water or other liquid is filled, which is heated by a heating means, which in a chamber 12 below the chamber 11 is recorded. Air is drawn from the space above the water

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or the other liquid ejected by evaporation of the liquid or by a vacuum pump, and an outlet 14 is then sealed.

By evaporation of the water or the liquid in the chamber 11, a constant temperature of the upper surface 15 of the vessel Io is reached, the actual temperature of the surface being determined by the Temperature of the steam is controlled. The lower part of the vessel Io is insulated to prevent heat loss to avoid thereby.

The water or the other liquid is heated by an electric heater or heaters, gas or oil burner evaporates or by circulating heated oil, vapors or gases through the heating chamber, and is controlled by a controller 19 of the temperature or the pressure.

In a further arrangement, as shown in FIGS. 5 and 6, there is a cylindrical vessel 16 on both end faces closed by end caps 17, with a central, axial, tubular member 18 runs through it to accommodate electrical heating elements or for the passage of heated ones

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liquid or gaseous medium.

The vessel 16 is partially filled with liquid, preferably above the level of the tubular Member 18, and the air remaining in the upper part of the vessel is evacuated and the outlet | from the vessel is sealed.

The vessel is preferably made of steel and can rotating or stationary.

The liquid will boil, evaporate, and condense at a temperature corresponding to the pressure in the cylinder or vessel and the fluid properties, the plant being based on a principle of the heat circulation works.

The temperature is controlled by limiting the heat input to the cylinder or vessel through the Regulator 19, either the temperature or the pressure.

The heat is transferred through the wall of the cylinder or vessel to the water or other liquid transfer.

Claims

-T-

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Claims (5)

Claims , 'Iy method of heating cylinders or vessels for use in textile, paper and other industries to achieve a constant surface temperature du r c h the partial filling of the chamber (11) or the vessel (lo) with a liquid that Pumping the air out of the cylinder or vessel and sealing the outlet (4, 14), heating the liquid in the cylinder or vessel boiling, evaporating and condensing at a temperature according to the temperature in the vessel, and controlling the temperature by limiting the Heat supply. 2. Apparatus for performing the method according to claim 1, characterized by a rotating cylinder (1), which is closed at each end, and two concentric cylinders inner cylinder (2, 3), the annular chamber being the innermost cylinder (3) and the central cylinder (2) which receives a heating means, and the annular space between the outer cylinder (1) partially with 309849/0851 is filled with a liquid which evaporates when heated to a constant peripheral temperature on the outer cylinder to provide an arrangement for heating the annular space between the inner cylinder (3) and the central cylinder (2), an arrangement for controlling the temperature of the steam and a wave that passes through the end caps closing the cylinder extends around which the cylinder rotates. 3. Apparatus according to claim 1, for achieving a constant temperature over the circumference of the outer cylinder, characterized in that the central cylinder (2) is provided with a number of radial guide plates or stirring strips (5) extending outward from the central cylinder, as well as the boiling of the liquid and the Circulation of steam caused when the cylinder rotates. 4. Apparatus for performing the method according to claim 1, characterized by a Cylinder (16), which is closed at each end, and a concentric tube (18) through the 309849/0851 end caps (17) through which a tube for receiving a heating medium extends, wherein the cylinder (16) is partially filled with liquid which evaporates when heated to a To provide a constant peripheral temperature on the outer cylinder, an arrangement for heating the Medium in the pipe or the medium flowing through the pipe. 5. Apparatus for performing the method according to claim 1, characterized by a closed vessel (lo), which is partially filled with liquid, and a heating chamber (12) in the lower part of the vessel (lo) to evaporate the liquid in it and the temperature on the upper surface of the vessel constant, and an arrangement for controlling the temperature of the steam. 309849/0851