CS258632B1 - Prenhrevfibre equipment - Google Patents

Abstract

The solution concerns » equalizing the temperature field of the contact surfaces and removing the external expansion vessel heating with a liquid medium.\ Inside it there is a vertical bell with a chimney located next to the walls of the contact surfaces to form slots for the circulation of the liquid and vented by an aeration pipe discharging vertically down to the bottom of the inlet pipe:- The immersion depth is greater than the height

Description

BACKGROUND OF THE INVENTION The present invention relates to a simplified solution for heating a continuous running filament in the process of its manufacture, commonly referred to as an iron. Fiber irons with a contact surface are known for guiding heated fibers to the desired temperature by controlling the performance of the heating elements used, and the requirement of as uniform temperature uniformity at different locations of this area is normally ensured by utilizing the principle of good thermal conductivity of the metal in which the cells are well placed. However, this structurally simple solution does not satisfy the requirements of uniformity of temperature mainly in the conditions of increasing the length, width and structure of the contact surface, for example by irrigating it for guiding several fibers of the surface. Irons are also known. which eliminate these disadvantages by changing the principle of heat dissipation from the heating elements to the contact flat, for example by using steam or liquid medium.

When using a steam medium to ensure temperature uniformity through condensation of saturated steam on the inner walls of the contact surfaces, the sizing, construction and operation of such devices are increased from the increased, reduced pressure of the medium used. The use of a liquid medium to ensure temperature uniformity through the flow of liquid past the inner walls of the contact surfaces, in turn, increases the need to provide such flow and the use of an expansion tank due to the expansion of the medium.

The drawbacks of said fiber contact heating surface systems are avoided by using one of the aforementioned systems - the liquid medium system with the present design of counteracting sufficient flow through the natural, self-loading circuit to allow the necessary volume to be added to expand the liquid into the irons' own body. The advantage is that it is not necessary to install a circulating pump, an external expansion tank, thus simplifying the equipment, saving energy and space, reducing the amount of liquid and heat loss of the equipment and improving the dynamic properties of the controlled system in question.

The fiber heating device according to the present invention is formed by a hollow vertical cross sectional shape and at least one wall arranged in the shape of a contact surface for contact with the heated fiber, in which there is venting inside the bottom. In addition, it has a vertical ring-shaped positioning for the inner walls of the contact pads to form fluids, for the circulation of the fluid, behind which the bell is provided with a continuous channel-chimney of a suitable cross-section and dimension. In its upper part, the bell is vented by a venting tube which extends vertically downward into the inlet pipe provided with a funnel and connected to a hollow vertical pipe by a plug-in member. The depth of immersion of the vent tube must be greater than the height of the hollow vertical heat. The vent tube contains an expansion whose volume is greater than the volume of the flow tube.

This solution allows a sufficiently uniform distribution of the temperatures in the various contact surfaces by transferring the heat from the heating element to their inner walls with a liquid having a sufficiently high thermal expansion, adequate viscosity and boiling point lower than the highest operating temperature of the device, with the present design provides sufficient self-winding intensity while simultaneously removing the outer expansion vessel from the reasonably large volume.

An example of such a device according to the invention is shown schematically in the attached drawing. The device consists of a hollow vertical body 1 with two contact surfaces Ba, 6b inside it, provided with a heating element 2 and a venting valve 3, whereby a vertical bell 4 fitted with a chimney 5 is still suitable inside it so that slots 7a, 7b have been formed for fluid circulation8. The vertical bell 4 is vented at the top by a venting pipe 9 provided with an extension 14 and a vertical outlet to the bottom of the head pipe 10 interconnected by a duct with a closure member 12 with a hollow-shaped body 1. The inflow pipe 10 is provided with a funnel 11 at the top. into a condition capable of filling it with a liquid 8 through the funnel 11 while simultaneously opening the closure member 12 and venting 3. The liquid level 13 gradually increases until the level of the lower edge of the vertical bead 4 starts to compress the air contained therein and by lowering the liquid closure obtained by opening the vent pipe 9 under the liquid column in the inlet chamber 10 also closed therein. After the hollow vertical body has been completely filled with liquid 1, the closing member 12 is also closed by the vent valve 3.

The device thus prepared works as follows:

By switching on the heating element 2, the liquid 8 begins to heat and expand, thereby starting to circulate through the chimney with the direction of the mountain and the corners 7 opposite. At the same time as the liquid volume increase 8, the level 13 also increases and compresses the air in the vertical bell 4 until the excess pressure given by the hydrostatic pressure value of the liquid trap in the inlet tube 10 becomes excess.

Claims (2)

Z 5 3 δ 3 2 5 expels air from the device. By repeatedly lowering the temperature of the device, the air pressure in the vertical bell 4 decreases, thereby also correspondingly reducing the height of said liquid column. When the apparatus is substantially cooled, when the air pressure drops below atmospheric pressure, the liquid 8 from the inlet pipe 10 is pumped into the expansion 14 of the vent pipe 9 and vice versa in the new heating. The present fiber heating apparatus may be used in hair, belt, film, and the like, wherein the heating system in question is applicable to all-technology equipment with similar requirements. OBJECT CLAIMS 1. A device for heating fibers formed by a hollow vertical preformed body comprising at least one contact surface for contact with a heated filament, characterized in that the hollow vertical body (1) provided with the heating element (2) and the vent valve (3) has in its interior an intravertical a bell (4) equipped with a chimney (5) positioned next to the walls of the contact surfaces (6a, 6b) of the slots (7a, 7b) for circulating the liquid (8), wherein the vertical bell (4) is vented at the top A pipe (9) extending vertically to the bottom of the inlet pipe (10), with a liner (11) and, at the bottom, a duct with the closure member (12), into the duo vertical body (1). Fiber heating device according to claim 1, characterized in that the depth (Hi) of the vertical outlet of the venting tube (9) downwards to the bottom of the inlet tube (10) is thicker than the height (H2) of the hollow vertical hotel ( 1). 1 sheet of drawings