KR101544312B1 - Nonmetallic sheet heater and binding device for change simplicity of the same and steam generating device - Google Patents

Abstract

The present invention provides a nonmetallic sheet-like heating element and a binding device capable of replacing the same, and a steam generating device. The binding device capable of replacing the nonmetallic sheet-like heating element can prevent cracks and damage to a sheet-like heating element against rapid temperature changes and facilitate the installation and replacement of the sheet-like heating element. According to an appropriate embodiment of the present invention, the binding device capable of replacing the nonmetallic sheet-like heating element, provided to bind the sheet-like heating element to a steam tank, comprises: a heater socket which is connected to one part of the steam tank and into which the sheet-like heating element is inserted and coupled; a tightening cap which moves back and forth according to the rotational direction by being screw-coupled to the heater socket, and forcibly pressurizes the rear side of the sheet-like heating element when moving forward; a locking means which restrains the backward movement of the tightening cap after the tightening cap is rotatably tightened; and a sealing means which forms water tightness in order to prevent a fluid from leaking into a gap between the sheet-like heating element and the heater socket.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-metallic surface heating element,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-metallic surface heating element and a binding apparatus for easily replacing the same, and more particularly to a non-metallic surface heating element which is resistant to cracking due to a rapid temperature change, And a steam generator.

Generally, a heater applied to a steam device has a structure that generates electricity by flowing electricity to a nichrome wire. Among the types of heaters, a sheath heater is used for generating steam, which is formed by inserting a heating wire into a coil of a metal protection tube and filling the insulating powder. In this case, if the heating wire is short-circuited inside, it may cause a failure of the steam generator.

If the heater fails in the steam generator, the extraction temperature is lowered, the vapor pressure is lowered, the vapor pressure does not rise, and the heating is not performed. If the heater can not be heated, the heater may not operate due to failure of other safety devices such as operation of the overheat prevention device, failure of the pressure switch and not the heater failure. If the heater fails, there is no replacement for the heater. However, it takes a lot of time to replace the heater, so an alternative is needed.

As a background of the present invention, Korean Patent Laid-open Publication No. 10-2014-0011862 discloses a method of combining a raw water supply inflow pipe side introduced from a raw water tank and a side of a return pipe circulating from a heating pipe, A check valve for allowing the raw water and the recovered water to flow into the penetration portion in the one adapter portion and a check valve for preventing the flow of water between the adapter portion and the connection port on the other side of the heating pipe And a heater for heating the raw water and the recovered water at the same time in the penetrating portion is formed by adhering the thin plate to both ends of the surface heating element so that a direct current terminal is formed at each end of the thin plate to supply a direct current A heater of a hot water boiler is proposed.

In the background art, raw water (raw water) and recovered water (water) are rapidly heated in a single penetration part by using a heater for DC power supply to prevent the loss of water temperature and suppress the generation of electromagnetic waves, It has an effect of reducing adverse effects.

However, the above-mentioned spouting technique is not a structure in which direct contact is made between a fluid and a planar heating element, so that the efficiency of heat transfer is lowered, and a replacement structure that can be easily replaced when the planar heating element fails can not be proposed.

Korean Unexamined Patent Application Publication No. 1999-0079424 (heater for electric steam boiler) Korean Registered Patent No. 10-1164128 (High Temperature Ceramic Heater and Manufacturing Method Thereof) Korean Registered Patent No. 10-1073628 (heater for electric boiler)

Accordingly, it is an object of the present invention to provide a non-metallic surface heating element for preventing cracking and breakage of a surface heating element due to abrupt temperature change and for mounting and replacing the surface heating element, a binding device for easily replacing the surface heating element, and a steam generating device. have.

A binding apparatus that can easily replace a non-metal surface heating element according to a preferred embodiment of the present invention,

A binding apparatus for binding an area heating element to a steam tank,

A heater socket connected to a portion of the steam tank and fitted with the surface heat emission element;

A tightening cap which is screwed to the heater socket and moves forward and backward in a rotating direction and forcibly pressurizes the back surface side of the surface heating element in forward movement;

Locking means for restraining the retraction movement of the tightening cap after rotation tightening; And

And sealing means for forming watertightness in the gap between the planar heating element and the heater socket to prevent leakage.

Further, in the heater socket,

A socket body of a circular section, a heater heating body inlet hole penetrating the center of one side of the socket body, a heater head housing chamber communicating with the heater heating body inlet hole, and a tightening cap formed on the heater head storage chamber for screw connection of the tightening cap And has a female screw portion or a male screw portion for fastening cap engagement formed on the outer peripheral surface of the socket body.

In addition,

A male screw portion threadably engaged with the female screw portion for engaging the tightening cap on the side of the heater socket on the outer circumferential surface, a cylindrical pusher projecting from one side of the male screw portion and pushing the surface heating element, And a polygonal operation portion having a polygonal cross-section.

In addition,

A cylindrical pusher protruding from one side of the female threaded portion to pressurize the planar heating element; a cylindrical protrusion protruding from the opposite side of the cylindrical pusher; And an operation unit.

In addition,

A flange fastening bolt for fastening the locking flange to the back surface of the heater socket, and a ring-like rubber pressing plate which is provided on the front surface of the locking flange and presses the fastening cap in an elastic manner. .

In addition,

A heater socket side bolt flange formed at a predetermined interval on the outer circumferential surface of the heater socket and having a bolt insertion hole, a bolt insertion flange having a bolt insertion slot formed at the same center radius as the bolt insertion hole, And a lock bolt fastened and fixed to the base body.

Further, the sealing means is a plate-like ring-shaped gasket positioned on the inner wall surface of the heater head housing chamber.

Further, the sealing means is characterized by further comprising an O-ring which is provided at one or more places on the inner surface of the heater head housing chamber and is in close contact with the head portion of the surface heat emission element.

A non-metallic surface heating element according to a preferred embodiment of the present invention,

Wherein the non-metallic surface heating element comprises a plate-like substrate sintered with alumina or silicon or germanium as a main component;

A resistance heating body buried in the substrate;

A heating element head formed at one end of the substrate;

And a terminal provided on the heating element head side and electrically connected to the resistance heating element;

And a sealing bolt is assembled to the head of the heating element so that a sealing o-ring is fitted to an annular engaging jaw of the outer circumferential surface and is engaged with the steam tank.

Further, in the heating element head, the fastening bolt is removed, an annular fastening protrusion is further protruded to be screwed to the steam tank, and at the same time, a male thread for winding the sealing teflon is formed.

Further, the head of the heating element is further provided with a pocket filled with a liquid.

Further, the substrate is characterized in that heat dissipation grooves are densely formed in the longitudinal direction or in the width direction to widen the heat generating surface area.

On the other hand, the steam generator using the non-

A steam tank;

A binding apparatus comprising any one of claims 1 to 8 installed in the steam tank;

And a non-metallic surface heating element coupled to the heater socket of the binding apparatus.

Also, the non-metallic surface heating elements are arranged in a row on the fixing plate, and are easily replaced from the steam tank.

Further, the steam tank is further provided with a heating chamber connected to the inlet for preventing cracking of the non-metallic surface heating element and having a U-shaped passage for circulating the inflow water from the inside thereof to the outlet.

According to the present invention, the means for preventing cracks is coupled to the planar heating element to prevent cracking or breakage of the planar heating element due to abrupt temperature change. In addition, after inserting into the heater socket, tightening force is exerted by rotationally engaging the tightening cap, thereby facilitating mounting of the surface heating element. When the mounting of the surface heating element is completed, the gasket and the O-ring are sealed to enable waterproofing. In addition, when the locking means is removed in the reverse order of assembly and the tightening cap is dismounted from the heater socket, it is possible to take out the surface heat emission element, thereby facilitating the replacement of the surface heat emission element.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of an embodiment of a non-metallic surface heating element applied to the present invention; FIG.
Fig. 2 is a perspective view showing a modified example of the non-metal surface heating element of Fig. 1; Fig.
3 and 4 are an installation perspective view and a cross-sectional view of an embodiment of a binding apparatus for easily replacing a non-metal surface heating element according to the present invention.
5 is an enlarged view of the "K" part of FIG.
FIG. 6 is an exploded perspective view of the binding apparatus applied to FIG. 3; FIG.
7 is an exploded cross-sectional view of the binding apparatus applied to Fig.
8 and 9 are a perspective view and an exploded perspective view of another embodiment of a binding apparatus in which a non-metal surface heating element according to the present invention can be easily replaced;
10 is an assembled sectional view of the binding apparatus of FIG.
11 to 13 are various installation views of a non-metallic surface heating element applied to the present invention.
14 is a cross-sectional view of a steam generator for preventing cracking of a non-metallic surface heating element applied to the present invention.
FIGS. 15 to 17 are various installation views of a non-metallic surface heating element applied to the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

1, a non-metallic surface heating element 30 includes a plate-like substrate 31 sintered with alumina or silicon or germanium as a main component, a resistance heating body 32 buried in the substrate 31, And a terminal 34 which is provided on the heating element head 33 side and is electrically connected to the resistance heating element 32. [

As shown in FIG. 2, a heat dissipation groove 31a may be densely formed in the longitudinal direction of the substrate 31 to widen the exothermic surface area. The heat dissipation groove 31a may be formed in the width direction of the substrate 31. [ When the heat dissipation groove 31a is formed on the substrate 31, the surface area is widened and the heat transfer efficiency is improved to shorten the steam heating temperature.

Next, the binding apparatus 10 for binding the planar heating element 30 to the steam tank 5 will be described.

First, the binding apparatus 10 of the first embodiment will be described with reference to Figs. 4 to 8. Fig.

A heater socket 12 which is connected to a portion of the steam tank 5 and into which the planar heating element 30 is fitted and which is screwed to the heater socket 12, A clamping cap 14 for forcing the rear face side of the planar heating element 30 to move forward and forward, a locking means for restraining a retreating movement of the tightening cap 14 after rotation tightening, and a face heating element 30 and a heater socket 12 And sealing means for forming a watertight seal in order to prevent leakage.

5 to 7, the heater socket 12 includes a socket body 121 having a circular cross section, a heater heating body inlet hole 122 penetrating the center of one side of the socket body 121, a heater heating body inlet hole 122, And a tightening cap engagement female threaded portion 124 formed on the heater head receiving chamber 123 side for threaded engagement of the tightening cap 14. [

The tightening cap 14 has a heat conductor wire drawing hole 141 penetrating through the center thereof and a male screw portion 142 screwed to the female screw portion 124 for fitting the tightening cap to the heater socket 12 on the outer circumferential surface, A cylindrical pusher 143 protruding from one side of the surface heating element 30 to press the surface heating element 30 and a polygonal operating portion 144 protruding from the other side of the male screw portion 142 and having a polygonal cross section.

The locking means includes a disk-shaped locking flange 16 positioned on the back side of the heater socket 12, a plurality of flange fastening bolts 17 coupling the locking flange 16 to the back surface of the heater socket 12, And a ring-shaped rubber pressing plate 18 which is provided on the front surface of the fastening cap 16 and presses the fastening cap 14 elastically.

The sealing means is constituted by a gasket (22) of a ring-like shape located on the inner wall surface of the heater head housing chamber (123). The gasket 22 may be any one of a Teflon gasket, a sealing gasket, a silicone gasket, a metal gasket, an asbestos gasket, and a rubber gasket.

5, the gasket 22 hermetically seals the contact gap between the heater socket 12 and the surface heating element 30 to block the heated hot water in the steam tank 5 from flowing out to the binding apparatus 10 side.

At this time, the sealing means may further include an O-ring 24 which is provided at one or more places on the inner surface of the heater head housing chamber 123 and is in close contact with the head portion of the area heating body 30. [ The O-ring 24 may be made of rubber or silicone.

As shown in FIG. 4, the coupling device 10 of the first embodiment having the above-described structure is coupled with the surface heat emission element 30 to be watertight and hermetically sealed, and can be easily replaced when the surface heat emission element 30 fails.

A process of installing and replacing the surface heating element 30 in the binding apparatus 10 will be described.

First, the gasket 22 is sandwiched between the surface heat emission elements 30.

Next, the surface heating element 30 is inserted into the heater socket 12 joined to the steam tank 5. At this time, the planar heating element 30 is inserted through the heater head housing chamber 123, and the gasket 22 is positioned between the heating element head 33 and the inner surface of the heater head housing chamber 123. Further, the head 33 of the heating element is fitted to the O-ring 24 in close contact therewith.

Then, the tightening cap 14 is screwed to the tightening cap engagement female threaded portion 124 to be engaged with the socket body 121. At this time, the tightening cap 14 presses the side of the heating element head 33 of the surface heating element 30 through the cylindrical push 143 by screw tightening. At this time, the tightening force of the tightening cap 14 can be raised by rotating the polygonal operating portion 144 using a tool such as a spanner.

5, the electric wire 39 connected to the surface heating element 30 is inserted into the wire drawing hole 141 (FIG. 5) in the tightening cap 14 before screwing the tightening cap 14 to the tightening cap fitting female threaded portion 124 To be connected to the terminal 34 of the surface heating element 30 is preferably preceded.

Accordingly, the gasket 22 receives the compressive force between the heating element head 333 and the inner surface of the heater head housing chamber 123, thereby enhancing the adhesion with the contact surface to perform sealing. In addition, since a plurality of O-rings 24 are provided in the second order, the waterproof function is improved in preparation for leakage.

Next, the locking flange 16 is installed by screwing the flange fastening bolt 17 to the socket body 121 of the heater socket 12. The rubber pressing plate 18 on the side of the locking flange 16 is resiliently brought into close contact with the tightening cap 14 so that the reverse rotation of the tightening cap 14 is suppressed and the pressing force pressing the heating element head 33 is maintained, So that pressure and fluid leakage in the steam tank 5 are eliminated.

On the other hand, when replacement is necessary due to failure of the surface heating element 30, disassembly proceeds in the reverse order of the above assembly. 7, the dismounting of the lock flange 143, the tightening cap 14, the surface heating element 30, and the gasket 22 in this order is simple. At this time, the area heating body 30 is easily taken out from the heater head housing chamber 123 of the heater socket 12 when the tightening cap 14 is removed.

8 to 10 as a modification of the binding apparatus 10 of the first embodiment.

8 to 10 show the binding apparatus 10 of the second embodiment. This is different from that in the coupling structure of the heater socket 12 and the tightening cap 14a, and only the locking means of the tightening cap 14a is different.

That is, the heater socket 12 includes a socket body 121 having a circular cross section, a heater heating body inlet hole 122 penetrating the center of one side of the socket body 121, a heater head 122 connected to the heater heating body inlet hole 122, And has a tightening cap engagement male thread portion 125 formed on the outer peripheral surface of the socket body 121 for threaded engagement of the storage chamber 123 and the tightening cap 14. [

The tightening cap 14a has a female thread portion 142a and a female screw portion 142a which are screwed to the screw portion 125 for fitting the tightening cap of the heater socket 12, A cylindrical pusher 143 protruding from one side of the cylindrical pusher 143 for pressing the surface heating element 30 and a polygonal operating portion 144 protruding from the opposite side of the cylindrical pusher 143.

In the second embodiment, the locking means includes a heater socket side bolt flange 126 having a bolt insertion hole 126a formed at a predetermined interval on the outer circumferential surface of the heater socket 12, And a locking bolt 19 which is fitted in the bolt insertion hole 126a and the bolt insertion slot 146a and is fastened and fixed by the nut 20 is formed on the fastening cap side bolt flange 146 having the bolt insertion long hole 146a formed in the bolt insertion hole 146a .

Since the fastening device of the second embodiment having the above-described structure changes the fastening position of the fastening cap 14 and only the locking device is different, the gasket 22 is applied in the same manner as in the first embodiment, 14 to prevent leakage of the fluid, and additionally, the O-ring 24 is applied to provide a preliminary waterproof function.

9, when the lock bolt 19 is loosened and the tightening cap 14 is disassembled by screwing, the replacement of the surface heat emission element 30 can be facilitated.

11, a sealing o-ring 36 is fitted to an annular engaging step 33a on the outer circumferential surface of the heating element head 33 of the surface heating element 30 and is fastened to the steam tank 5 The bolt 35 can be assembled. The sealing o-ring 36 is in close contact with the heating element head 33 and the steam tank 5 to prevent leakage on the connection portion side of the plane heating element 30 and the fixing bolt 35 prevents the surface heating element 30 from being connected to the steam tank 5 And at the same time an adhesive force is generated in the sealing o-ring 36. [

12, the fixing bolt 35 is removed from the heating head 33 of the surface heat emission element 30, the annular fixing protrusion 33a is further protruded and screwed to the steam tank 5, So that the male screw 33b for winding the Teflon can be formed.

In another embodiment, the heating head 33 of the planar heating element 30 may be provided with a pocket 37 filled with a liquid as shown in FIG.

On the other hand, as shown in FIGS. 15 to 17, a plurality of non-metal surface heat emission elements 30 are arranged in a row on the fixing plate 50 and can be easily replaced from the steam tank 5. Therefore, the non-metal surface heat emission elements 30 assembled in the fixing plate 50 can be replaced by a cylinder.

3 and 4, the present invention includes a coupling device 10 for easily replacing the steam tank 5, the non-metal surface heating element 30 provided in the steam tank 5, and the heater 10 of the binding device 10, A non-metallic surface heating element 30 coupled to the socket 12 can be manufactured. The steam tank 5 may be named variously depending on the application of the steam.

14, a U-shaped channel is connected to the inlet 5a to prevent cracking of the non-metallic surface heating element 30, and the inflow water is circulated inside and discharged to the outlet 5b. The heating chamber 6 can be further provided. Therefore, the inflow water is heated while being circulated in the heating chamber (6) and flows into the steam tank (5), thereby preventing direct cooling contact with the non-metal side heating element (30), thereby preventing cracking and breakage.

Accordingly, the present invention can be applied to various steam generating devices such as a steam cleaner, a steam washing machine, a steam cooker, a steam iron, and a steam boiler by using the binding device 10 and the non-metal surface heating element 30.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

5: Steam tank
10:
12: Heater socket
14,14a: Fastening cap
22: Gasket
24: O ring
30: Non-metallic surface heating element
35: fastening bolt
36: Oiling for sealing
37: Pocket
50: Fixing plate

Claims (15)

delete delete delete delete delete delete delete delete In the non-metallic area heating element (30)
The non-metallic surface heating element 30 comprises a plate-like substrate 31 sintered with alumina or silicon or germanium as a component;
A resistance heating body 32 buried in the substrate 31;
A heating head 33 formed at one end of the substrate 31;
And a terminal (34) provided on the heating element head (33) side and electrically connected to the resistance heating element (32);
A sealing bolt 35 is assembled to the heating head 33 so that the sealing o-ring 36 is fitted in the annular engaging step 33a on the outer circumference and the joining bolt 35 is engaged with the steam tank 5,
Wherein the heating element head (33) is further provided with a pocket (37) filled with a liquid. 10. The method of claim 9,
The fixing bolt 35 is removed from the heating element head 33 and an annular engaging protrusion 33a is further protruded to be screwed to the steam tank 5 and a male screw 33b for winding the sealing teflon is formed Wherein the non-metallic surface heating element is a non-metallic surface heating element. delete 11. The method according to claim 9 or 10,
Wherein a heat dissipation groove (31a) is formed in the substrate (31) in a longitudinal direction or in a width direction so as to widen the surface area of exothermic heat. A steam tank (5);
A binding apparatus (10); And
A non-metallic surface heating element (30)
The binding apparatus (10)
A heater socket (12) connected to a portion of the steam tank (5) and fitted with the non - metallic surface heating element (30);
A tightening cap (14 or 14a) screwed to the heater socket (12) to move back and forth along the rotating direction and forcibly pressurizing the back surface side of the surface heating element (30) when moving forward;
Locking means for restraining the retraction movement of the tightening cap (14) after rotation tightening;
And a sealing means for forming watertightness in the gap between the non-metal surface heat emission element (30) and the heater socket (12) to prevent leakage,
The non-metal surface heat emission element (30)
A plate-like substrate 31 sintered using alumina or silicon or germanium as a component;
A resistance heating body 32 buried in the substrate 31;
A heating head 33 formed at one end of the substrate 31;
And a terminal (34) provided on the heating element head (33) side and electrically connected to the resistance heating element (32). 14. The method of claim 13,
Wherein a plurality of the non-metal surface heat emission elements (30) are arranged in a row on the fixing plate (50) and are easily replaced from the steam tank (5). 14. The method of claim 13,
Inside the steam tank 5, there is provided a heating chamber 6 connected to the inlet 5a for preventing cracking of the non-metallic surface heating element 30 and having a U-shaped passage for circulating the inflow water therein through the outlet 5b Wherein the steam generator further comprises a steam generator.

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