KR102440420B1 - Quick heating apparatus - Google Patents

Abstract

The present invention can instantaneously heat a fluid to an appropriate temperature required by a user by integrating a heating layer into a square-shaped pipe that provides a fluid flow space. To provide an instantaneous heating device. The present invention for this purpose is a rectangular pipe having a heating space connecting an inlet and an outlet, a first insulating layer coated on at least one surface of the pipe, a conductive wire pattern part coated on the outer surface of the first insulating layer, and the a heating unit having a rectangular shape including a heating layer connecting the conductive wire pattern part and having a resistance pattern part that is heated by the current applied from the conductive wire pattern part, and a second insulating layer coated on an outer surface of the heating layer; a shear cap coupled to the inlet port with a shear gasket interposed therebetween; a rear end cap coupled in close contact with the water outlet with a rear end gasket interposed therebetween; and enclosing the heating unit while being spaced apart from the heating unit, enclosing a portion of the front end cap and the rear end cap, and bringing the front end cap and the rear end cap into close contact with the heating unit so that the front end gasket and the rear end gasket are compressed. A case; discloses a feature comprising.

Description

Instantaneous heating device {QUICK HEATING APPARATUS}

The present invention relates to an instantaneous heating device, and more particularly, to an instantaneous heating device capable of supplying water by instantaneous heating with water of a temperature and capacity required by a user.

The instantaneous heating device is a device that heats inflow water to a predetermined desired temperature and then discharges it to the outside. And, it is provided in the device body and includes a heater for heating the water introduced into the device body through the water inlet pipe.

Recently, as a cylindrical heater, a heater for hot water heating in which an insulating material or a conductive material is coated with a thin film layer on the surface of a cylindrical material by a screen printing method to form an insulator or a heating resistor has been proposed.

However, although the cylindrical heater has excellent miniaturization and heat exchange efficiency, the manufacturing process is complicated and the material cost is relatively high, so the production cost burden is high. As a result, there are disadvantages in that the withstand voltage characteristics that destroy metals such as ceramics are lowered, and local heating phenomenon occurs.

And, in order to make the instantaneous heating device including the cylindrical heater small and simple in size, it is effective to directly heat it by flowing water into the cylindrical heater. Therefore, if the heat dissipation is large, the heat exchange efficiency is lowered, and there are disadvantages such as adversely affecting peripheral devices.

Therefore, it is required to develop an instantaneous heating device with excellent heat exchange efficiency, a simple manufacturing process, low manufacturing cost, and excellent safety.

Republic of Korea Patent Publication No. 2006-0054761 (published on May 23, 2006)

An object of the present invention is to solve the problems of the prior art, and the present invention is to instantaneously heat a fluid to an appropriate temperature required by a user by integrating a heating layer on a rectangular pipe that provides a fluid flow space. It is to provide an instantaneous heating device having excellent durability and safety in use while having a low manufacturing cost.

In order to achieve the object of the present invention described above, an instantaneous heating device according to an embodiment of the present invention includes a rectangular pipe having a heating space connecting an inlet and an outlet, and a first insulation coated on at least one surface of the pipe. layer, a heating layer connecting the conductive wire pattern portion coated on the outer surface of the first insulating layer and the conductive wire pattern portion and having a resistance pattern portion that is heated by the current applied from the conductive wire pattern portion, and coating on the outer surface of the heating layer a heating unit having a rectangular shape including a second insulating layer; a shear cap having a fluid inlet in communication with the inlet and coupled in close contact with the inlet with a shear gasket interposed therebetween; a rear end cap having a fluid outlet communicating with the water outlet and coupled to the outlet in close contact with a rear end gasket; and enclosing the heating unit while being spaced apart from the heating unit, enclosing a portion of the front end cap and the rear end cap, and pressing the front end cap and the rear end cap toward the heating unit so that the front end gasket and the rear end gasket are compressed. Including a case, the case, the upper case having an upper fixing portion on the edge; and a lower case having a lower fixing part corresponding to the upper fixing part, wherein the upper case or the lower case has a ground plate coupling block to which a ground plate is coupled to an outer surface, and the ground plate is attached to the ground plate coupling block A fixed ground portion coupled to the outside of the case, and an elastic contact portion extending from the fixed ground portion to the inside of the case and elastically in close contact with the outer surface of the heating unit when the upper case and the lower case are coupled characterized by including.

In the instantaneous heating device according to an embodiment of the present invention, the case, by coupling the upper fixing part and the lower fixing part, a case fixing tool for fixing the upper case and the lower case; may further include.

In the instantaneous heating device according to an embodiment of the present invention, the upper case or the lower case may have a bimetal receiving portion accommodating a bimetal on an inner surface, in which case the bimetal is coupled to the bimetal receiving portion and the upper case And when the lower case is coupled, it is possible to maintain a contact state with the outer surface of the heating unit.

In the instantaneous heating device according to the embodiment of the present invention, the bimetal receiving portion may be provided with a terminal through hole for exposing the bimetal terminal and the reset switch to the outside, and the inner side of the edge of the terminal through hole is the bimetal A fixing protrusion into which the body part of the body part is inserted and fixed may be formed to protrude.

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In the instantaneous heating device according to an embodiment of the present invention, the rear end cap includes: a rear end cap housing surrounding the outer surface of the rear end gasket; a rear end cap flange extending from the rear end of the rear end cap housing to the center and closely attached to the rear surface of the rear end gasket to press the rear end gasket toward the heating unit; and an outlet port that forms the fluid outlet and extends rearwardly through the case from the center of the rear end cap flange.

In the instantaneous heating device according to an embodiment of the present invention, the outlet port may have a temperature sensor coupling block to which the temperature sensor is coupled to the outer surface, and may have a relief valve coupling block to which the relief valve is coupled.

According to the present invention, by providing a flow space of the fluid and at the same time providing a heating unit for heating the fluid flowing through the flow space in a rectangular shape, there is an advantage that the insulation layer and the heating layer can be easily manufactured and the manufacturing cost can be greatly reduced. .

According to the present invention, since the position and airtightness of the heating unit are guaranteed only by the assembly process of the case, the assembly process of the device can be simplified, and durability and safety of the device can be improved.

According to the present invention, since the peripheral devices such as bimetal, grounding plate, temperature sensor, and relief valve required for the instantaneous heating device can be integrally provided in the case or the assembly of the peripheral devices can be completed simultaneously with the assembly of the case, The assembly process can be further simplified, and the size and weight of the device can be reduced.

1 is an exemplary view of an instantaneous heating device according to an embodiment of the present invention.
Figure 2 is an exemplary view of the instantaneous heating device of Figure 1 viewed from the bottom.
3 is a longitudinal cross-sectional view of FIG. 1 .
FIG. 4 is an exemplary view showing the separation of the heating unit and the front end cap and the rear end cap in FIG. 3 .
5 is a perspective view (a) and a cross-sectional view (b) of a heating unit according to an embodiment of the present invention.
6 is a combined cross-sectional view (a) and a separated cross-sectional view (b) taken along line AA of FIG. 3 .
7 is a cross-sectional view taken along line BB of FIG. 3 .

Hereinafter, preferred embodiments of the present invention in which the above-described problems to be solved can be specifically realized will be described with reference to the accompanying drawings. In describing the present embodiments, the same names and reference numerals may be used for the same components, and an additional description thereof may be omitted.

1 is an exemplary view of an instantaneous heating apparatus according to an embodiment of the present invention, FIG. 2 is an exemplary view of the instantaneous heating apparatus of FIG. 1 viewed from the bottom, FIG. 3 is a longitudinal cross-sectional view of FIG. 3 is a separate exemplary view showing the heating unit and the front end cap and the rear end cap as the center, and FIG. 5 is a perspective view (a) and a cross-sectional view (b) of a heating unit according to an embodiment of the present invention.

1 to 5 , the instantaneous heating device according to an embodiment of the present invention may include a heating unit 100 , a front end cap 210 , a rear end cap 220 , and a case 400 .

The heating unit 100 may form a flow path through which the fluid is transferred, and heat the transferred fluid without stagnation.

The heating unit 100 according to the embodiment may include a pipe 110 , a first insulating layer 120 , a heating layer 130 , and a second insulating layer 140 .

The pipe 110 has a length in the front-rear direction through which the fluid is transferred, and may have a heating space 113 connecting the water inlet 111 on one side and the water outlet 112 on the other side.

The pipe 110 may be formed in various cross-sectional shapes, but as shown, may be formed in a rectangular shape having the same cross-sectional area in the front and rear directions. Since the square-shaped pipe 110 has a flat outer surface, it is easy to assemble and manufacture the first insulating layer 120 , the heating layer 130 , and the second insulating layer 140 coated on the outer surface. This has the advantage of significantly lowering the unit cost. In addition, the square-shaped pipe 110 can increase the installation and assembly of peripheral devices required for the instantaneous heating device, such as the bimetal 500, the ground plate 600, the temperature sensor 700, and the relief valve 800. There are also advantages.

The pipe 110 may be made of various materials, for example, it may be made of a stainless material.

The first insulating layer 120 may be coated on at least a portion of the outer surface of the pipe 110 . The first insulating layer 120 may block power applied to the heating layer 130 from being conducted toward the pipe 110 .

The heating layer 130 may be coated on the outer surface of the first insulating layer 120 . The heating layer 130 may be heated by an externally applied current.

The heating layer 130 may form a planar structure, that is, a thin sheet structure having flexibility. The heating layer 130 includes a conductive wire pattern part 131 coated on the outer surface of the first insulating layer 120 , and a conductive wire. It may include a resistance pattern part 133 that connects the pattern part 131 and is heated by the current applied from the conductive wire pattern part 131 .

The resistance pattern portion 133 is coated on the first insulating layer 120 to have an even interval to form a pattern. Unlike the illustration, the resistance pattern portion 133 may have various patterns such as zigzags and lattices. have.

Although not shown, a lead wire for supplying current may be connected to the conductive wire pattern unit 131 , and the lead wire may be connected to an external power supply unit through a lead wire through hole 402 of the case 400 .

The second insulating layer 140 may be coated on the outer surface of the heating layer 130 . and the second insulating layer 140 may block the power applied to the heating layer 130 from being conducted to the outside.

In this way, the current applied to the conductive wire pattern part 131 is not conducted to the outside through the first insulating layer 120 and the second insulating layer 140, but is conducted toward the resistance pattern part 133, and the current is conducted. Heat is generated in the resistance pattern part 133 . The heat generated by the resistance pattern unit 133 may heat the pipe 110 to heat the fluid flowing in the heating space 113 .

The heating layer 130 is protected through the first insulating layer 120 disposed on the inside and the second insulating layer 140 disposed on the outside, so that the durability of the heating unit 100 can be increased, and miniaturization is possible. , heat resistance and impact resistance, as well as can effectively heat the fluid.

Instantaneous heating device may include a shear gasket (310).

The shear gasket 310 is coupled to one end of the heating unit 100 , that is, the water inlet 111 , and may maintain airtightness between the shear cap 210 and the heating unit 100 , which will be described later.

The front gasket 310 may have a rectangular shape corresponding to the shape of the rectangular heating unit 100 , and the front end in which the inlet 111 of the heating unit 100 is inserted in the rear surface facing the heating unit 100 . An insertion groove 311 may be formed.

The shear cap 210 may be coupled in close contact with the inlet 111 of the heating unit 100 with the shear gasket 310 interposed therebetween, and may guide the fluid flowing in from the outside to the heating space 113 .

The shear cap 210 includes a front cap housing 212 surrounding the outer surface of the front gasket 310, a front end of the front cap housing 212, and a center extending from the front end of the front gasket 310, and is in close contact with the front surface of the front gasket 310. A front cap flange 213 for pressing the gasket 310 toward the heating unit 100, and a fluid inlet 211 extending forward from the center of the front cap flange 213 and communicating with the water inlet 111 are formed It may include an inlet port 214 .

Here, the front cap housing 212 and the front cap flange 213 are disposed inside the case 400 , and when the case 400 is assembled, the front cap housing 212 is centered on the outer surface of the front gasket 310 . It can be pressed to the outer surface of the inlet 111 by pressing in the direction, and the front cap flange 213 can be compressed to the front of the inlet 111 by pressing the front side of the front gasket 310 to the rear.

In addition, the inlet port 214 may be formed to extend forward through the case 400, and may be combined with a fluid transfer pipe (not shown).

The instantaneous heating device may include a rear gasket 320 .

The rear end gasket 320 is coupled to the other end of the heating unit 100 , that is, the water outlet 112 , and may maintain airtightness between the rear end cap 220 and the heating unit 100 , which will be described later.

The rear gasket 320 may have a rectangular shape corresponding to the rectangular shape of the heating unit 100 , and the front side facing the heating unit 100 has a rear end into which the water outlet 112 of the heating unit 100 is inserted. An insertion groove 321 may be formed.

The rear end cap 220 may be coupled in close contact with the water outlet 112 of the heating unit 100 with the rear end gasket 320 interposed therebetween, and may guide the fluid heated in the heating space 113 to the outside.

The rear end cap 220 is formed to extend from the rear end of the rear end cap housing 222 and the rear end of the rear end cap housing 222, which surrounds the outer surface of the rear end gasket 320, and is in close contact with the rear end of the rear end gasket 320. A rear end cap flange 223 for pressing the gasket 320 toward the heating unit 100, and a fluid outlet 221 extending forward from the center of the rear end cap flange 223 and communicating with the inlet 111 are formed. It may include an outlet port 224 .

Here, the rear end cap housing 222 and the rear end cap flange 223 are disposed inside the case 400 , and when the case 400 is assembled, the rear end cap housing 222 is centered on the outer surface of the rear end gasket 320 . direction to be compressed on the outer surface of the water inlet 111 , and the rear end cap flange 223 may press the rear surface of the rear end gasket 320 forward to be compressed on the rear surface of the water outlet 112 .

And, the outlet port 224 may be formed to extend backward through the case 400, and may be combined with a fluid transfer pipe not shown.

The case 400 surrounds the heating unit 100 , and may be disposed to be spaced apart from the outer surface of the heating unit 100 . As a result, an air layer S may be formed in the space between the case 400 and the heating unit 100 . This air layer (S) may have an insulating effect that the heat of the heating unit 100 is not easily transferred to the case 400 side.

Then, the case 400 surrounds a portion of the front end cap 210 and the rear end cap 220 and presses the front end cap 210 and the rear end cap 220 toward the heating unit 100 to the front end gasket 310 and the rear end gasket. 320 may be compressed.

The case 400 according to the embodiment may include an upper case 410 , a lower case 420 , and a case fixture.

The upper case 410 may be provided in a box shape with an open lower portion to surround the upper portion of the rectangular heating unit 100, and the upper fixing portion 411 to which the case fixture is coupled may be integrally provided on the rim. have.

The lower case 420 may be provided in a box shape with an open upper portion to surround the lower portion of the rectangular heating unit 100, and the lower fixing portion 421 to which the case fixture is coupled may be integrally provided on the rim. have.

The case fixture is to fasten the upper case 410 and the lower case 420 in close contact with the upper case 410 and the lower case 420 with the heating unit 100 interposed therebetween, through which the upper fixing part 411 and the lower fixing part 421 are fastened. 400) may be completed.

At the same time as the assembly of the upper case 410 and the lower case 420 is completed through the case fixture in this way, the shear cap 210 disposed in the front presses the shear gasket 310 toward the heating unit 100, and at the rear The arranged rear end cap 220 presses the rear end gasket 320 toward the heating unit 100 so that the airtightness of the inlet 111 and the water outlet 112 of the heating unit 100 can be maintained, and the front end gasket 310 ) and the rear gasket 320, the heating unit 100 can be secured in a stable installation position without a special structure.

When the assembly of the case 400 is completed, it can be combined and used at a desired place through the bracket 401 .

6 is a combined cross-sectional view (a) and an isolated cross-sectional view (b) taken along the line A-A of FIG. 3 .

Referring further to FIG. 6 , the instantaneous heating device may include a bimetal 500 .

The bimetal 500 prevents overheating of the heating unit 100 by automatically shutting off electricity when a set temperature is reached, and may be integrally provided in the instantaneous heating device according to the present invention.

That is, the case 400 may have a bimetal receiving portion 415 in which the bimetal 500 is accommodated.

Specifically, the inner surface of the upper case 410 is integrally provided with a bimetal receiving portion 415 concave in the upper direction, and the bimetal receiving portion 415 has a portion of the bimetal 500 penetrating through to expose to the outside. A terminal through-hole 416 is provided, and a fixing protrusion 417 into which a part of the bimetal 500 is inserted and fixed is formed to protrude from the inner surface of the edge of the terminal through-hole 416 .

That is, the bimetal 500 is disposed to face the heating unit 100 by inserting a portion of the body portion 501 into the fixing protrusion 417 formed in the bimetal receiving portion 415 , and a terminal 502 provided at the other end. ) and the reset switch 503 penetrate the terminal through hole 416 and are exposed to the outside of the upper case 410 .

As such, the bimetal 500 is assembled with the upper case 410 and the lower case 420 in a state previously mounted on the upper case 410 before assembling the case 400, and at the same time, the body part 501 is the heating unit 100 ) can be in contact with the outer surface of

Although the case in which the bimetal 500 is provided in the upper case 410 has been described above, the bimetal 500 may be provided in the lower case 420 .

Meanwhile, a plurality of bimetal 500 may be provided having different temperature characteristics. In this case, depending on the environment to which the instantaneous heating device is applied, the temperature setting for overheating may be more freely set. For example, when a high fluid temperature is required, such as in a water purifier, or when a relatively low fluid temperature is required, such as in a bidet, a bimetal having a corresponding temperature characteristic among a plurality of bimetals may be selected and used. In addition, even if one of the plurality of bimetals 500 is damaged, overheating can be prevented by using the remaining bimetals, thereby minimizing the risk of overheating.

7 is a cross-sectional view taken along line B-B of FIG. 3 .

Referring further to FIG. 7 , the instantaneous heating device may include a ground plate 600 .

The ground plate 600 effectively distributes a fault current or an abnormal voltage to protect the device, and may be integrally provided in the instantaneous heating device according to the present invention.

Specifically, the case 400 may have a ground plate coupling block 425 to which the ground plate 600 is coupled. The ground plate coupling block 425 according to the embodiment may be integrally provided on the outer surface of the lower case 420 .

And, the ground plate 600 according to the embodiment is coupled to the ground plate coupling block 425 through the ground plate fixture 601 and is exposed to the outside of the case 400 with a fixed ground unit 610 and a fixed ground unit. It may include an elastic contact portion 620 that is formed extending inside the case 400 from 610 and is elastically in close contact with the outer surface of the heating unit 100 when the upper case 410 and the lower case 420 are combined. .

The elastic contact portion 620 may be formed to extend from one end connected to the fixed ground portion 610 to a free end so as to impart its own elastic force and be bent to form a curved surface. Accordingly, the elastic contact portion 620 is compressed while being inserted into the space between the heating unit 100 and the case 400 when the upper case 410 and the lower case 420 are coupled, and accordingly, the elastic contact portion 620 is The free end may be uniformly in close contact with the outer surface of the heating unit 100 .

Although the case in which the ground plate 600 is provided in the lower case 420 has been described above, the ground plate 600 may be provided in the upper case 410 .

Referring back to FIGS. 3 and 4 , the instantaneous heating device may include a temperature sensor 700 .

The temperature sensor 700 measures the temperature of the fluid passing through the heating space 113 , and may be provided in the rear end cap 220 coupled to the water outlet 112 . Specifically, the temperature sensor coupling block 225 to which the temperature sensor 700 is coupled may be integrally provided at the outlet port 224 of the rear end cap 220 .

As such, by integrally providing the temperature sensor coupling block 225 in which the temperature sensor 700 is installed in the rear end cap 220, it is possible to reduce the total number of parts of the instantaneous heating device as well as to prevent damage to the temperature sensor 700. Maintenance, such as replacement, can be easily performed, and the instantaneous heating device can be miniaturized.

And, the instantaneous heating device may include a relief valve (800).

The relief valve 800 reduces the fluid pressure by opening the flow path when the set fluid pressure exceeds the set fluid pressure, and may be provided in the rear end cap 220 coupled to the water outlet 112 . Specifically, the relief valve coupling block 226 to which the relief valve 800 is coupled may be integrally provided at the outlet port 224 of the rear end cap 220 .

The relief valve coupling block 226 has a relief passage 226a communicating with the fluid outlet 221, and the relief valve 800 is a valve unit 810 for opening and closing the fluid outlet 221 and the relief passage 226a. And, the cap part 820 for closing the relief flow path 226a, and the valve part 810 and the cap part 820 are disposed between the valve part 810 to pressurize the fluid outlet 221 and the relief flow path 226a. It may include an elastic member 830 for blocking the.

If the fluid pressure passing through the fluid outlet 221 exceeds the set pressure, the elastic member 830 is compressed and the valve 810 is opened, and accordingly, some fluid passing through the fluid outlet 221 is transferred to the relief flow path. It may be introduced into the 226a and discharged to the outside. Accordingly, the pressure of the fluid passing through the fluid outlet 221 can be reduced.

As described above, by integrally providing the relief valve coupling block 226 in which the relief valve 800 is installed to the rear end cap 220, it is possible to reduce the total number of parts of the instantaneous heating device as well as the relief valve 800 ), maintenance, such as replacement due to damage, can be easily performed, and the instantaneous heating device can be miniaturized.

Although the preferred embodiment of the present invention has been described with reference to the drawings as described above, those skilled in the art may vary the present invention in various ways without departing from the spirit and scope of the present invention as set forth in the following claims. may be modified or changed.

100: heating unit 210: shear cap
220: rear end cap 310: front end gasket
320: rear end gasket 400: case
410: upper case 420: lower case
500: bimetal 600: ground plate
700: temperature sensor 800: relief valve

Claims (8)

A rectangular pipe having a heating space connecting the inlet and outlet, a first insulating layer coated on at least one surface of the pipe, and a conductive wire pattern portion coated on the outer surface of the first insulation layer and the conductive wire pattern portion, a heating unit having a rectangular shape including a heating layer having a resistance pattern portion that is heated by a current applied from the conductive wire pattern portion, and a second insulating layer coated on an outer surface of the heating layer;
a shear cap having a fluid inlet in communication with the inlet and coupled in close contact with the inlet with a shear gasket interposed therebetween;
a rear end cap having a fluid outlet communicating with the water outlet and coupled to the outlet in close contact with a rear end gasket; and
A case that surrounds the heating unit while being spaced apart from the heating unit, surrounds a portion of the front end cap and the rear end cap, and presses the front end cap and the rear end cap toward the heating unit so that the front end gasket and the rear end gasket are compressed including,
The case includes an upper case having an upper fixing part on the edge and a lower case having a lower fixing part corresponding to the upper fixing part,
The upper case or the lower case has a ground plate coupling block to which the ground plate is coupled to the outer surface,
The ground plate includes a fixed ground portion coupled to the ground plate coupling block and exposed to the outside of the case, and the heating unit extending from the fixed ground portion to the inside of the case when the upper case and the lower case are combined. Instantaneous heating device, characterized in that it comprises an elastic contact elastically close to the outer surface of the. According to claim 1,
The case is a case fixture for fixing the upper case and the lower case by coupling the upper fixing part and the lower fixing part; Instantaneous heating device further comprising a. 3. The method of claim 2,
The upper case or the lower case has a bimetal receiving portion in which the bimetal is accommodated on the inner surface,
The bimetal is coupled to the bimetal accommodating portion and instantaneous heating device, characterized in that in contact with the outer surface of the heating unit when the upper case and the lower case are coupled. 4. The method of claim 3,
The bimetal receiving part is provided with a terminal through hole for exposing the bimetal terminal and the reset switch to the outside,
The instantaneous heating device, characterized in that the fixing protrusion into which the body part of the bimetal is inserted and fixed is formed protruding from the inner surface of the edge of the terminal through hole. delete According to claim 1,
The rear end cap is
a rear end cap housing surrounding an outer surface of the rear end gasket;
a rear end cap flange extending from the rear end of the rear end cap housing to the center and in close contact with the rear side of the rear end gasket to press the rear end gasket toward the heating unit; and
Instantaneous heating device comprising a; forming the fluid outlet and extending from the center of the rear end cap flange to the rear to pass through the case. 7. The method of claim 6,
The outlet port instantaneous heating device, characterized in that it has a temperature sensor coupling block to which the temperature sensor is coupled to the outer surface. 7. The method of claim 6,
The outlet port instantaneous heating device, characterized in that it has a relief valve coupling block to which the relief valve is coupled to the outer surface.

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