WO2007066848A1

WO2007066848A1 - Cover for hot-water pipe for heating and method of manufacturing the same

Info

Publication number: WO2007066848A1
Application number: PCT/KR2005/004446
Authority: WO
Inventors: Shin Bok Cho
Original assignee: Shin Bok Cho
Priority date: 2005-12-06
Filing date: 2005-12-22
Publication date: 2007-06-14
Also published as: KR100554528B1

Abstract

In a cover of a hot water pipe for heating and a method for manufacturing the same, the cover is coupled with an outer peripheral surface of a hot water pipe, which carries out heating, for transmitting an increased amount of heat to an underfloor layer, thereby maximizing heat emission efficiency and heating efficiency in wintertime. In the cover including a heat radiating plate curved in the shape of arc to be coupled with the outer peripheral surface of the hot water pipe disposed between a concrete layer and the underfloor layer, and heat radiating fins protruded outward from the heat radiating plate, the heat radiating fins are protruded in the shape of cap at connection parts between cutaway parts.

Description

COVER FOR HOT-WATER PIPE FOR HEATING AND

METHOD OF MANUFACTURING THE SAME

Technical Field

[1] The present invention relates to a cover for a hot water pipe for heating and a manufacturing method thereof, and more particularly to a cover for a hot water pipe for heating, wherein a cover is coupled with an outer surface of a hot water pipe for heating and transmits an increased amount of heat to an underfloor heating layer forming a floor of a room, so that heating efficiency and heat emission efficiency in wintertime can be maximized.

Background Art

[2] In general, a heating system is widely employed for generating heat energy via

combustion or converting electric energy to heat energy to keep a room temperature properly in winter time.

[3] A boiler, which has been used widely as the heating system, includes a main body for generating hot water via combustion, and heating hot water pipes for circulating heated water to places to heat to raise environmental temperature of the places.

[4] Such a heating hot water pipe 100 is, as shown in Fig. 1 to Fig. 3, mounted in the shape of zig zag or coil between a concrete layer 300 and an underfloor heating layer 200, so that water heated by the boiler circulates along the hot water pipe 100.

[5] Therefore, hot water circulating in the hot water pipe 100 heats the hot water pipe, and heat emitted from the heated hot water pipe is transmitted to the underfloor heating layer 200, thereby heating an inside of a room.

[6]

Disclosure of Invention

Technical Problem

[7] The hot water pipe 100 is formed of metal materials such as copper or aluminum of a high thermal conductivity. The hot water pipe formed of the metal materials has, however, a disadvantage that corrosion may be occurred by chemical reaction with by- prouct of aged concrete because of the repetitive retraction and expansion of the hot water pipe in response to turning on or off of the boiler or in association with the change of seasons. The corrosion reduces or clogs a tubular way of the hot water pipe 100, and disturbs the circulation of the hot water. In the serious cases, the hot water pipe may be damaged by the corrosion.

[8] Therefore, there have been increasing demands for manufacturing the hot water pipe with a synthetic resin such as polyethylene resin, so called excel pipe of a high corrosion resistance but of a low retraction/expansion rate depending on temperature change. Still, the hot water pipe formed of the synthetic resin material has, however, a disadvantage that strength thereof is relatively low in comparison with the hot water pipe formed of the metal material, so that the hot water pipe may be easily damaged by external shock or pressure.

[9] Furthermore, both of the metallic hot water pipe and the synthetic resin hot water pipe have a disadvantage that a heating efficiency thereof is not high.

[10] As shown in Fig. 3, a distance section 'a' from an upper end of the hot water pipe

100 to an upper end of the underfloor heating layer 200 has a thickness in the range of 10mm - 30mm usually, so that the heat emitted from the hot water pipe 100 is not sufficiently transmitted to an uppermost part of the underfloor layer 200. Therefore, it is difficult to expect a heating efficiency corresponding to an operation rate of the boiler.

[11] In order to increase the heating efficiency, the underfloor heating layer is formed with a reduced thickness of about 10mm. In this case, however, cracks may be occurred in the underfloor heating layer 200 because of the reduced thickness and the cracks may result in the damage of the hot water pipe 100.

[12]

Technical Solution

[13] Therefore, the present invention is derived to resolve the above and any other disadvantages of the prior art.

[14] According to the present invention, there is an object to provide a cover for a hot water pipe for heating, wherein the cover is formed of a metal material and coupled with an outer surface of a hot water pipe, which is installed between an underfloor layer and a concrete layer, for enlarging a heating area, so that heat is transmitted from the hot water pipe to the underfloor layer via the cover and, simultaneously, the underfloor layer is coupled with the cover with an increased coupling force, so that the cracks or damage of the hot water pipe may be prevented even though the underfloor layer is formed of a reduced thickness of about 10mm for improving heating performance.

[15] There is another object of the present invention to provide a method for manufacturing a cover for a hot water pipe for heating, wherein the hot water pipe has a sufficient resistance against external shock or pressure by resolving the drawbacks in the strength and durability of a hot water pipe, which is formed of a synthetic resin material

[16] Therefore, according to the present invention, a cover for a hot water pipe for

heating includes a heat radiating plate curvedly folded with an inner peripheral surface substantially equal to an outer peripheral surface of the hot water pipe disposed between a concrete layer and an underfloor layer, and heat radiating fins protruded from the heat radiating plate, wherein the heat radiating fins are protruded at connection parts formed between cutaway parts and are formed in the shape of n.

[17] The heat radiating fins are folded to be disposed zig zag.

[18]

Advantageous Effects

[19] According to a cover of a hot water pipe for heating, which has heat radiating fins, a contact area between the cover heated by the hot water pipe and the underfloor layer is enlarged and a distance from portions for emitting heat, such as the heat radiating fins, to an uppermost end of the underfloor layer is reduced, so that thermal conductivity for the underfloor layer becomes improved and a thermal conductivity range is enlarged, thereby minimizing loss of heat and improving heating efficiency.

[20] Further, the cover of the present invention is laid on an upper part of the hot water pipe, so that assembling of the cover with the hot water pipe becomes simple and the heat is concentratedly transmitted to the top part of the underfloor layer via the cover, thereby maximizing the improvement of the heating efficiency and saving energy.

[21] Furthermore, the cover is in the cylindrical shape with an opened side, so that the cover is easy to make and also easy to mount by simply fitting the same to the hot water pipe to cover the hot water pipe.

[22] The cover for a hot water pipe for heating is formed of a metal material, which is relatively high in strength rather than the synthetic resin material, and covers the top part of the hot water pipe. Therefore, it becomes possible to resolve dangerous factors such as cracks or damage of the hot water pipe against external shock applied in the process of curing or load applied from the top part of the underfloor layer when installing the underfloor layer.

[23] As above, the cover of the present invention may protect the hot water pipe formed of the resin material from the external shock or pressure, so that the durability of the entire heating pipe structure may be improved.

[24] Furthermore, the heat radiating fins are formed in the shape of protrusion, so that the underfloor layer may be formed with a reduced thickness without the cracks of the underfloor layer, while carrying out heat transmission sufficiently.

[25]

Brief Description of the Drawings

[26] The present invention will become more apparent by describing embodiments

thereof in detail with reference to the accompanying drawings in which:

[27] Fig. 1 is a plane view showing a buried state of a prior art hot water pipe for

heating; [28] Fig. 2 is a cross-sectioinal view of the hot water pipe of Fig. 1 as taken along line

A-A of Fig. 1 ;

[29] Fig. 3 is a partially expanded cross-sectional view of the hot water pipe;

[30] Fig. 4 is a perspective view showing a cover for a hot water pipe according to a preferred embodiment of the present invention, wherein the cover is not assembled with a hot water pipe yet;

[31] Fig. 5 is a perspective view showing the cover according to the preferred

embodiment of the present invention, wherein the cover is assembled with the hot water pipe;

[32] Fig. 6 is a cross-sectional view showing the cover installed between an underfloor layer and a concrete layer;

[33] Fig. 7 is a diagram for explaining a method for manufacturing a cover for a hot water pipe for heating according to a preferred embodiment of the present invention;

[34] Fig. 8 is a plane view for showing a state of a sheet for manufacturing the cover; and

[35] Fig. 9 is a front view for showing the state of the sheet for manufacturing the cover.

[36]

Best Mode for Carrying Out the Invention

[37] The present invention will be described in more detail with reference to the accompanied drawings hereinafter.

[38] Fig 4. is a perspective view of a cover for a hot water pipe for heating according to a preferred embodiment of the present invention, wherein the cover is not coupled with a hot water pipe yet and the cover is formed with a heat radiating plate provided with heat radiating fins protruded outwardly, Fig. 5 is a perspective view of the cover of Fig. 4, wherein the cover is coupled with the hot water pipe, and Fig. 6 is an enlarged cross-sectional view showing principal parts of the cover which is installed between an underfloor layer and a concrete layer while being coupled with the hot water pipe.

[39] Referring to Fig. 4, a cover 400 of the present invention includes a heat radiating plate 410 and a plurality of U-shaped heat radiating fins 420 protruded outward from the heat radiating plate 410, wherein the heat radiating plate is curvedly folded to have an inner peripheral surface equal to an outer diameter of a hot water pipe 100, so as to surround an outer surface of the hot water pipe 100.

[40] The heat radiating fins 420 are formed with cutaway parts 440 of a uniform length apart from connection parts 450 by a uniform interval, and the connection parts 450 are in the shape of cap protruded outward.

[41] The heat radiating fins 420 are, as shown in Fig. 5 and Fig. 6, filled with a concrete material forming an underfloor layer 200 in spaces defined by the cap-shaped protrusion portions.

[42] When the underfloor layer 200 is constructured after the cover 400 is coupled with the hot water pipe 100 and the hot water pipe 100 is installed into a concrete layer 300, cement forming the underfloor layer 200 is introduced into the space parts of the heat radiating fins 420, so that the hot water pipe 100 is stably coupled with the underfloor layer 200.

[43] The heat radiating fins 420 are folded to be disposed zig zag outside the heat

radiating plate 410. Therefore, when the underfloor layer 200 is constructed after the hot water pipe 100 coupled with the cover 400 is put on the concrete layer 300, the cement forming the underfloor layer 200 is introduced into the heat radiating fins 420 which are formed zig zag on the heat radiating plate 410, so that the hot water pipe 100 is stably kept in the underfloor layer 200.

[44] Contact areas between the heat radiating fins 420 and the concrete layer are

expanded and heat is emitted to the underfloor layer 200 widely, so that the heat transmission effect is improved.

[45] The cover 400 as described above, may be formed of a metal material having a high thermal conductivity, such as Al or Cu, considering the improvement of the heat conductivity and the simplification of manufacturing. The cover 400 is preferably formed of Cu, wherein the heat radiating plate 410 and the heat radiating fins 420 are integrally formed of the same metal material with the cover 400.

[46] In Fig. 4, the cover 400 is coupled with a top surface of the hot water pipe 100 on the concrete layer 300 via its inner peripheral surface folded curvedly.

[47] The cover 400 may be formed with various standards according to an outer

diameter of the hot water pipe 100, and operations of the cover 400 will be described in more detail with reference to Fig. 6.

[48] Fig. 7 is a diagram for explaining a method for manufacturing a cover having heat radiating fins according to a preferred embodiment of the present invention, Fig. 8 is a plane view showing a state of a sheet for manufacturing the cover according to the present method, and Fig. 9 is a front view for showing the state of the sheet as shown in Fig. 8.

[49] Referring to Fig. 7 to Fig. 9, a method for manufacturing a cover for a hot water pipe for heating according to the present invention, includes a punching step P of forming cutaway parts 440 and punching position-determining holes 430 in sequence in parallel to an advancing direction of a copper sheet S of a predetermined thickness to form connection parts 450 between the cutaway parts 440, a heat radiating fin forming step F of forming cap-shaped heat radiating fins 420 by folding the connection parts 450 between the cutaway parts 440 upward as the punched sheet S is transferred step by step, a cutting step C of cutting the sheet S formed with the heat radiating fins 420 by a required length, and a curling step CU of curling the sheet S to have an inner peripheral surface equal to an outer diameter of a hot water pipe 100.

[50] The heat radiating fins 420 are folded to be disposed at both sides of the connection parts 450 zig zag with sections in the shape of cap.

[51] Therefore, the position-determining holes 430 and the cutaway parts 440 are formed while the sheet S passes a punching machine in the punching step P. The sheet S formed with the position-determining holes 430 and the cutaway parts 440 are formed with the heat radiating fins 420 zig zag while the sheet S is transferred by a step by the transfer.

[52] The heat radiating fins 420 are formed in the shape of cap for improving the

coupling force owing to concrete material filled in the cap portions. Furthermore, the heat radiating fins 420 may serve as tension elements at the folded positions when the hot water pipe 100 coupled with the heat radiating fins is installed for heating, since the heat radiating fins 420 have self elasticity.

[53] Since the hot water pipe 100 is compressed at inner portions and extended at outer portions at each folding position during piping work, the cover 400 coupled outside the hot water pipe 100 has to be flexibly deformed together with the hot water pipe 100. The heat radiating fins 420 formed in the cap shape may be opened more or closed at their opened ends flexibly, making the cover deform flexibly in association with the hot water pipe.

[54] Therefore, the piping work may be realized easily in a short time by the free

bending at the curve positions of the hot water pipe 100 coupled with the cover 400.

[55] The sheet S formed with the heat radiating fins 420 via the heat radiating fin

forming step F, is cut by a desired length in the cutting step C, and the cut sheet S is finally curled to form a circular shape with an opened side in consideration of the outer diameter of the hot water pipe 100.

[56] Fig. 6 is a partially expanded cross-sectional view of the cover having the heat radiating fins according to the present invention, wherein the cover is to be mounted on the hot water pipe.

[57] Referring to Fig. 6, the hot water pipe 100 in a tubular shape is mounted in a predetermined shape (referring to Fig. 1) on the concrete layer 300, which forms a bottom part of a building, and the cover 400 in the cylindrical shape with an opened side is opened is put on the hot water pipe 100.

[58] The cover 400 is formed by bending a thin copper sheet having a high elasticity, so that the hot water pipe 100 is fitted in the cover 400 by simply widening the opening side of the cover 400 by applying a slight force. After fitting the hot water pipe 100 in the cover 400, the widened opening side of the cover 400 is restored to it's original state by the elasticity. Therefore, the coupling between the hot water pipe 100 and the cover 400 is realized simply.

[59] The underfloor layer 200 is formed on the cover 400, so that the heat of the hot water pipe 100 is transmitted to the underfloor layer 200 via the cover 400.

[60] The cover 400 may be used after being cut by a predetermined length, and a

plurality of such cut covers 400 may be mounted continuously to cover entire sections of the hot water pipe 100 mounted on the concrete layer 300.

[61] The cover 400 is employed for local parts or the entire parts of the hot water pipe

100 in consideration of the length of the cover, the heat efficiency, and material cost, wherein such options may be selected or modified by a designer.

[62] The cover 400 is preferably formed in the cylindrical shape opened at a side. At this time, if the cylindrical shape is an arc smaller than a semicircle, the contact area and the coupling force between the cover 400 and the hot water pipe 100 are reduced un- profitably, decreasing the heat transmission efficiency.

[63] Heating operations of the hot water pipe in the heating structure as above will be described in more detail hereinafter.

[64] Referring to Fig. 6, when hot water heated by a boiler(not shown) is circulating in the hot water pipe 100, heat of the hot water heats the hot water pipe 100, and the heated hot water pipe 100 transmits its heat to positions corresponding to the heat radiating plate 410 and the heat radiating fins 420 uniformly, since the hot water pipe 100 is in contact with the heat radiating plate 410 and the heat radiating fins 420 at its outer peripheral surface.

[65] Therefore, the heat of the hot water pipe 100 is transmitted and emitted to the

underfloor layer 200, which is in contact with a periphery of the heat radiating plate 410 and the surface of the plurality of heat radiating fins 420.

[66] At this time, thermal expansion of the heat radiating fins 420 may be compensated by intervals between the heat radiating fins 420.

[67] According to the heat radiating fins 420 formed as above, a sum of an outer surface of the heat radiating plate 410 and surface areas of the heat radiating fins 420 becomes larger than a surface area of the cylindrical hot water pipe 100, and contact areas for thermal conductivity may be enlarged.

[68] Therefore, the thermal conductivity toward the underfloor layer 200 is carried out fast. Further, thermal conductivity to the top part of the underfloor layer 200 becomes improved accordingly, since a distance from the heat radiating fins 420 to the uppermost part of the underfloor layer 200 is reduced by about 1/2 comparing with that from a general hot water pipe.

[69] Even though the underfloor layer 200 is formed thickly to avoid cracks as conventional ones, the thermal conductivity distance may be reduced by the heat radiating fins 420, thereby increasing the energy efficiency and, therefore, realizing the energy saving.

[70] The cover 400 is in the cylindrical structure for covering the top part of the hot water pipe 100, so that the thermal conductivity and heat emission are carried out toward the top part of the underfloor layer 200 concentratedly. The top part of the underfloor layer 200 is the target place of the heating, so that the heating efficiency becomes higher conclusionally. The cover formed of Cu according to the present invention collects heat from the hot water circulating along the hot water pipe 100 and transmits the heat upward according to natural rising characteristics of the heat.

[71] In other words, if the cover is in a closed cylindrical shape surrounding the outer peripheral surface of the hot water pipe 100 entirely, thermal conductivity is carried out even toward a lower part of the underfloor layer. But, the lower part of the underfloor layer is not a place necessary to heat, so that loss of heat is generated in this case. That is, energy saving is realized by the cover in the opened cylindrical shape of the present invention.

Claims

[1] A cover of a hot water pipe for heating, comprising:

a heat radiating plate formed in an arc shape to be fitted on an outer surface of a hot water pipe disposed between a concrete layer and an underfloor heating layer; and

heat radiating fins protruded from the heat radiating plate;

wherein the heat radiating fins are protruded at connection parts formed between cutaway parts and are formed in shape of n.

[2] The cover as claimed in claim 1, wherein the heat radiating fins are provided zig and zag at both ends of the connection parts.

[3] The cover as claimed in claim 1, wherein the cover is made of copper.

[4] Method for manufacturing a cover for a hot water pipe for heating, comprising the steps of:

forming cutaway parts and punching position-determining holes in sequence in parallel to an advancing direction of an elastic sheet as the elastic sheet is transported, to form connection parts;

forming heat radiating fins by curving the connection parts disposed between the cutaway parts as the sheet punched in the said punching step is transferred step by step;

cutting the sheet by a required length; and

curling the sheet to have an inner peripheral surface equal to an outer diameter of a hot water pipe.

[5] The method as claimed in claim 1, wherein the heat radiating fins are formed in shape of n.