KR-20260067568-A - APPARATUS FOR RAILWAY VEHICLE FLOOR HEATING BASED ON WOVEN SURFACE HEATING ELEMENT

KR20260067568AKR 20260067568 AKR20260067568 AKR 20260067568AKR-20260067568-A

Abstract

A railway vehicle floor heating device based on a woven planar heating element according to the present invention comprises: an upper plate and a lower plate forming the floor of the railway vehicle having a predetermined area; a woven planar heating element layer disposed between the upper plate and the lower plate; and a control device for applying a driving power to the woven planar heating element layer, wherein the woven planar heating element layer comprises a first electrode, a second electrode, and at least one or more heating yarns electrically connected between them, and the first electrode, the second electrode, and the plurality of heating yarns are woven.

Inventors

강동훈
박주엽

Assignees

한국철도기술연구원

Dates

Publication Date: 20260513
Application Date: 20241106

Claims (9)

In a railway vehicle floor heating device based on a woven planar heating element, An upper plate and a lower plate having a predetermined area and forming the floor of the railway vehicle; A woven planar heating element layer disposed between the upper and lower plates; and It includes a control device that applies driving power to the above-mentioned woven planar heating element layer, A railway vehicle floor heating device comprising a woven planar heating element layer including a first electrode, a second electrode, and at least one plurality of heating yarns electrically connected between them, wherein the first electrode, the second electrode, and the plurality of heating yarns are woven.
In Article 1, A railway vehicle floor heating device in which the above-mentioned control device supplies power to each woven planar heating element such that the power per unit area is the same.
In Article 2, Each planar heating element has its size determined by the vertical length in the direction in which the first electrode and the second electrode extend, and the width representing the distance between the first electrode and the second electrode. A railway vehicle floor heating device in which the above-described control device increases the driving voltage applied to each planar heating element in proportion to the width of each planar heating element.
In Paragraph 3, A railway vehicle floor heating device in which the above-described control device applies the same driving voltage to each planar heating element when the width of each planar heating element is the same.
In Article 1, A railway vehicle floor heating device in which the first electrode and the second electrode are metal wires or metal-coated conductive fibers.
In Article 1, A railway vehicle floor heating device in which the heating wire is a conductive fiber or a core wire coated with a conductive material.
In Article 1, A railway vehicle floor heating device in which the first electrode and the second electrode are formed by weaving a plurality of conductive wires in parallel.
In Article 1, A railway vehicle floor heating device, wherein the above-described planar heating element layer is woven with insulating yarns that fill the space between a first electrode and a second electrode and the space between adjacent heating yarns.
In Article 1, A railway vehicle floor heating device in which the upper plate is made of heat-resistant synthetic rubber, and the upper plate and the woven planar heating element layer are bonded by a sheet-type adhesive.

Description

Apparatus for Railway Vehicle Floor Heating Based on Woven Surface Heating Element The present invention relates to a railway vehicle floor heating device based on a woven planar heating element. Conventional railway vehicles provide interior heating using a hot air convection system with heaters and fans; however, this method suffers from the problem of varying heating temperatures depending on the location of the intake and exhaust vents, resulting in uneven heating temperatures for each passenger seat. Additionally, passengers frequently complain of discomfort due to the dry air. Furthermore, secondary issues, such as the transmission of viruses within the cabin, can arise during the air circulation process. To address these issues, research on technology that provides floor heating via a radiant method is known. Like Ondol, floor heating can heat a large area relatively uniformly, has a low risk of burns, and can reduce indoor dryness compared to hot air convection methods. Conventional technologies known include methods using heating wires or heating films. In the present invention, a railway vehicle floor heating device is constructed using a woven planar heating element that, compared to heating wires or heating films, has good thermal efficiency, can provide a uniform temperature, and is easily deformed into various shapes. FIG. 1 illustrates a floor heating device for a railway vehicle according to one embodiment of the present invention. FIG. 2 illustrates a woven planar heating element according to one embodiment of the present invention. FIG. 3 is a photograph of a woven planar heating element according to one embodiment of the present invention. Figure 4 shows an SEM image of a woven planar heating element according to one embodiment of the present invention. FIGS. 5 to 9 are drawings for explaining the control operation of a control device according to an embodiment of the present invention. FIG. 10 illustrates the heat generation performance results of a floor heating device according to one embodiment of the present invention. Embodiments of the present invention are described below with reference to the attached drawings so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification are denoted by similar reference numerals. Throughout the specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "electrically connected" with other components interposed between them. Furthermore, when a part is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. The following examples are detailed descriptions to aid in understanding the present invention and are not intended to limit the scope of the present invention. Accordingly, inventions within the same scope that perform the same function as the present invention will also fall within the scope of the present invention. FIG. 1 illustrates a floor heating device for a railway vehicle according to one embodiment of the present invention, FIG. 2 illustrates a woven planar heating element according to one embodiment of the present invention, FIG. 3 is a photograph of a woven planar heating element according to one embodiment of the present invention, and FIG. 4 illustrates an SEM image of a woven planar heating element according to one embodiment of the present invention. As described above, the floor heating device (10) for a railway vehicle includes a woven planar heating element (100) disposed between an upper plate (300) and a lower plate (400), and a control device (200) for controlling the same. First, the top plate (300) is the uppermost surface exposed to passengers, and typically uses synthetic rubber or the like. However, in the case of synthetic rubber, there is a problem in that it causes discomfort to passengers due to the odor of chemicals (such as ammonia) when heated. Additionally, spray adhesives are used to bond the synthetic rubber, but there is a problem in that the adhesive performance deteriorates when heated, causing separation between layers and reduced workability. Accordingly, in the present invention, heat-resistant synthetic rubber is used as the top plate (300), and a sheet-type adhesive is used at the interface where the top plate (300) and the woven planar heating element (100) come into contact. Through this, the productivity and heat resistance of the product can be improved, and unpleasant odors can be prevented. The bottom plate (400) is mainly made of plywood, but the pre