KR20180025474A - Hot Water Supply Apparatus - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply device for supplying hot water to a domestic heating device such as an electric bidet or a hot water mat. More particularly, the present invention relates to a hot water supply device, A ceramic heater which is drawn inward along the longitudinal direction of the heating tube and heats the fluid supplied to the heating tube; A water level sensing unit coupled to an upper end of the heating pipe and sensing a level of a fluid supplied to the inside of the heating pipe, A control unit for controlling power supply of the ceramic heater by comparing a value detected by the sensing unit with a predetermined water level limit value, It is provided, including the de.
According to the present invention, a ceramic heater is provided in a heating tube to heat a fluid conveyed into a heating tube to a predetermined temperature while being in contact with a surface of the ceramic heater, so that a separate fluid storage tank is unnecessary, The manufacturing cost of the hot water supply device can be reduced.
In addition, since the fluid contacts the surface of the ceramic heater and is directly heated, the heating rate is fast, the temperature of the fluid discharged to the outside is constantly sensed, and the operation of the ceramic heater is stopped when the fluid is above a certain temperature, It is effective.
In addition, since the hot water supply device and the ceramic heater are indirectly supported inside the pipe by the elastic ring which is not in direct contact with the elastic ring, the leakage current is minimized and the electrical safety is excellent.
In addition, when the fluid is not supplied to a certain level or higher, the power supplied to the ceramic heater is cut off, so that the ceramic heater is overheated to prevent breakage of the fluid. There is an effect that can be.

Description

[0001] Hot Water Supply Apparatus [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply device for supplying hot water to a domestic heating device such as an electric bidet or a hot water mat. More specifically, a pipe type or rod- To a suitable temperature for use in an electric bidet or a hot water mat in the process of flowing the fluid through the ceramic heater while passing through the ceramic heater.

Generally, a hot water supply device installed in an electric bidet or a hot water mat is constructed by heating water stored in a hot water storage tank provided therein with an electric heater or the like to form hot water, and then connecting the hot water to the connection hose It is possible to supply a large amount of water at a time when the amount of water in the hot water storage tank is consumed. The hot water is supplied at a low temperature, and the supply amount of the hot water is also reduced.

In the case of such an electric bidet, the structure of the hot water tank of the bidet of Korean Registered Utility Model No. 456143 filed by Kolenovita Co., Ltd. as a prior art has such a problem that a metal heater is mounted in the heating tank, The hot water scrubber of No. 786217 is an indirect heating method in which a fluid flows into a rectangular rectangular metal tank and directly forms a heating pattern portion on the outer surface of the metal tank and forms a heating resistance pattern on the upper surface of the metal tank. And the heat exchange efficiency is low due to the indirect heating method. In Korean Patent No. 624568, a rectangular plate-like heater pattern-printed with a ruthenium resistor on a ceramic substrate is attached to the surface of a tank channel in order to improve thermal efficiency by dividing an inner channel by the indirect heating method as described above, Is an indirect heating method in which the heat of the fluid is heated and the upper layer is glazed and insulated by using a glass print as an insulating layer on the heating pattern layer of the ruthenium-based ceramic heater. Thus, the electrical safety is very weak due to heat breakdown due to heat, This is a very high problem.

In addition, Korean Utility Model No. 453744 discloses a direct heating type in which two plate-type ceramic heaters are submerged in a plastic tank, which is the only structure currently adopted by Woongjin Coway. Since the ceramic heater has a plate-like mechanical strength, the ceramic heater has many breakdown failures during use. When the capacity of the ceramic heater is increased, the number of the plate-type heaters must be increased It is bulky and has a high failure rate. At present, 1700W class is equipped with two ceramic heaters. In the case of Western people, the number of the bidet is very difficult because the quantity of the bidet is larger than that of the Oriental.

In addition, the hot water mat has an advantage that it can completely solve the problems of the conventional electric mat, in which the electric heating line is built in the mat, that is, the danger of fire or electric shock due to harmful electromagnetic waves and electric hot wire.

The hot water mat of Korean Patent Laid-Open Publication No. 2005-0057890 is known as a conventional hot water mat. However, the hot water heater used in such a conventional hot water mat has the following problems.

That is, in the conventional hot water heating device for hot water mat, most of the water stored in the hot water storage tank is heated by the electric heater installed in the hot water storage tank, so that the hot water of the electric heater is low in heat efficiency It takes a lot of time to make electricity, and the electricity consumption becomes large, so that the maintenance cost such as the electric charge becomes large, and since the metal-based sheath heater is installed, electromagnetic waves are generated to the extent that the electromagnetic waves are effective on the human body.

In addition, in the conventional hot water heating device for hot water mat, since the electric motor pump for circulating the hot water stored in the hot water storage tank is fixedly installed on the inner side of the hot water storage tank, the noise of the motor And the vibration is radiated to the outside as it is through the body of the hot water heating device, and unpleasant noise is generated.

Accordingly, there is an increasing demand for a hot water supply device that can overcome the unreasonable point of such a conventional hot water supply device, has a simple structure, shortens the time to reach the heating temperature, In fact.

Korean Registered Utility Model No. 456143 Korean Patent No. 786217 Korean Registered Utility Model No. 453744 Korea Patent Publication No. 2005-0057890

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ceramic heater having a simple structure in which a separate hot water storage tank is not required, So that the fluid is heated to a proper temperature in the process of transferring the fluid to the inside of the heating pipe by the direct heating method.

It is another object of the present invention to provide a bimetal that is installed in the longitudinal direction of a ceramic heater only when the level of the inside of the pipe is judged to be higher than a predetermined level and the bimetal is mounted on the outlet side of the heating pipe, The voltage is cut off to prevent breakage of the ceramic heater due to overheating.

Another object of the present invention is to minimize the leakage current of the ceramic heater electrically connected to heat the fluid, thereby improving the electrical stability.

According to an aspect of the present invention, there is provided a method of manufacturing a heat pipe, comprising: supplying a fluid inward through a supply pipe connected to one side of a lower part; A ceramic heater which is drawn inward along the longitudinal direction of the heating tube to heat the fluid supplied to the heating tube and a through hole which is coupled to a lower end of the heating tube and through which the ceramic heater is passed, A water level sensing unit coupled to an upper end of the heating tube and sensing a level of a fluid supplied to the inside of the heating tube; a water level sensing unit for comparing a value detected by the water level sensing unit with a predetermined water level threshold value; And a control board for controlling power supply of the ceramic heater.

The heater fixing lid part is formed with threads for screwing into a lower end of the heating tube inside the upper end part, a first through hole having a larger diameter than the ceramic heater is inserted through the center in the center, A cap body having a lower surface formed with a coupling surface on which a plurality of first screw holes are downwardly formed and having a stepped recess receiving groove formed upwardly from the coupling surface along an outer edge of the first insertion hole, And an engaging plate formed with a resilient ring and a second through hole corresponding to the first through hole at a center thereof and a second screw fastening hole corresponding to the first screw fastening hole formed outside the second through hole, The ceramic heater is inserted into the first through hole of the cap body and the elastic ring is inserted into the receiving groove, The elastic ring is compressed and attached to the upper surface of the coupling plate so that the first and second through holes are spaced apart from each other in the space between the outer surfaces of the ceramic heater And one side of the elastic ring is pressed tightly so as to surround the outer surface of the ceramic heater.

In addition, a corner portion formed by the receiving groove of the cap body and the outer peripheral surface of the first through hole is formed as a first inclined surface, and a corner portion formed by the upper surface of the coupling plate and the outer peripheral surface of the second through- .

Further, an edge portion formed by the receiving groove of the cap body and the outer circumferential surface of the first through hole is formed as a first inclined surface, and the second through hole is formed as a downwardly inclined structure.

The bimetallic switch may further include a heat transfer plate coupled to one side of the discharge pipe to transfer fluid heat transferred to the discharge pipe and a bimetal switch installed on the heat transfer plate, If the temperature is higher than the predetermined temperature, the power supply to the ceramic heater is cut off.

According to the present invention, a ceramic heater is provided in a heating tube to heat a fluid conveyed into a heating tube to a predetermined temperature while being in contact with a surface of the ceramic heater, so that a separate fluid storage tank is unnecessary, The manufacturing cost of the hot water supply device can be reduced.

In addition, since the fluid contacts the surface of the ceramic heater and is directly heated, the heating rate is fast, the temperature of the fluid discharged to the outside is constantly sensed, and the operation of the ceramic heater is stopped when the fluid is above a certain temperature, It is effective.

In addition, since the hot water supply device and the ceramic heater are indirectly supported inside the pipe by the elastic ring which is not in direct contact with the elastic ring, the leakage current is minimized and the electrical safety is excellent.

In addition, when the fluid is not supplied to a certain level or higher, the power supplied to the ceramic heater is cut off, so that the ceramic heater is overheated to prevent breakage of the fluid. There is an effect that can be.

1 is a perspective view illustrating a structure of a hot water supply apparatus according to an embodiment of the present invention.
2 is an exploded perspective view of a hot water supply apparatus according to an embodiment of the present invention.
3 is a sectional view of a hot water supply apparatus according to an embodiment of the present invention.
4 is a view showing a hot water supply device installed in the electric bidet.
5 is a view showing a state in which a hot water supply device according to an embodiment of the present invention is installed on a hot water mat.
6 is a cross-sectional view showing another embodiment of the heat exchange body according to the present invention.
7 is a cross-sectional view showing another embodiment of the heat exchange body according to the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a structure of a hot water supply apparatus according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a hot water supply apparatus according to an embodiment of the present invention, FIG. Fig. 2 is a cross-sectional view of a hot water supply device according to the present invention.

The hot water supply device according to the present invention includes a heat exchange body 100, a ceramic heater 200, a heater fixing lid 300, a water level sensing unit 400, and a control board 500, do.

The heat exchange body 100 has a heating tube 130 which is formed in the longitudinal direction and in which the fluid moves along the longitudinal direction and a heat transfer tube 130 connected to one side of the lower side of the heating tube 130, And a discharge pipe 120 through which the fluid heated inside the heating pipe 130 is discharged to the outside, by being supplied to the supply pipe 110 and one side of the upper side of the heating pipe 130.

The ceramic heater 200 is installed to be drawn inward along the longitudinal direction of the heating tube 130 so that the fluid supplied into the heating tube 130 is heated while being in contact with the ceramic heater 200. Such a ceramic heater 200 is formed in a tubular shape or a bar shape, and the fluid contacts the surface of the ceramic heater 200 and is heated directly, so that the heating rate is very fast, and thus power is saved.

The heater fixing lid 300 is coupled to seal the lower end of the heating tube 130 and has a through hole through which the ceramic heater 200 is inserted so that the ceramic heater 200 is fixed inside the heating tube 130 do.

The heater fixing lid 300 includes a cap body 310 coupled to the lower end of the heating tube 130 and an elastic ring 330 for fixing the ceramic tube 200 and the inner sealing of the heating tube 130 And a coupling plate 320 coupled to the lower portion of the cap body 310.

The cap body 310 is formed with threads for screwing into the upper end of the heating tube 130 at the inside of the upper end portion and a first through hole 311 through which the ceramic heater 200 is inserted at the center. The first through hole 311 is formed to have a diameter slightly larger than the diameter of the ceramic heater 200 so that even if the ceramic heater 200 is inserted into the first through hole 311, Through hole (311). A coupling surface 312 is formed at a lower end of the cap body 310 so that a plurality of first screw coupling holes 312a are arranged along an arc and a coupling surface 312 is formed on the coupling surface 312 along the outer edge of the first insertion hole. So that a stepped recess receiving groove 313 is formed.

Preferably, the elastic ring 330 is inserted into the receiving groove 313 in a donut shape, and is made of a heat-resistant material which is an insulator of rubber or silicone.

The coupling plate 320 has a second through hole 321 corresponding to the first through hole 311 formed at the center thereof and a second through hole 321 corresponding to the first screw hole 312a formed outside the second through hole 321 The elastic ring 330 is accommodated in the inner side by the receiving groove 313 and is engaged with the cap body 310 so that the second screw fastening hole 322a is formed. The elastic ring 330 is pressed against the outer surface of the ceramic heater 200.

More specifically, the ceramic heater 200 is inserted into the first through hole 311 of the cap body 310 and the elastic ring 330 is inserted into the receiving groove 313, When the screw is coupled with the first and second screw fastening holes 312a and 322a so that the upper surface of the coupling plate 320 is closely attached to the coupling surface 312, a receiving space for accommodating the elastic ring 330 is formed, The upper surface of the engaging plate 320 presses the elastic ring 330 to elastically change the elastic ring 330. At this time, since the elastic ring 330 occupies a large volume in the accommodation space, the elastic ring 330 is compressed by the engagement plate 320 so that the inner surface of the elastic ring 330 contacts the first and second through holes 311 and 321 So as to surround the outer surface of the ceramic heater 200.

The outer surface of the ceramic heater 200 is pressed by the elastic ring 330 and the ceramic heater 200 is fixed in the heating tube 130 by the pressing force of the elastic ring 330 The position can be maintained. Accordingly, since the heat exchange body 100 is not in direct contact with the ceramic heater 200, the electricity transmitted to the ceramic heater 200 is prevented from leaking to the heat exchange body 100.

The water level sensing unit 400 is coupled to the upper end of the heating pipe 130 to sense the level of the fluid supplied to the inside of the heating pipe 130. In the present invention, the upper connecting body 410 is screwed to the upper part of the heating tube 130, and the water level sensing part 400 is screwed to the inside of the connecting body.

The control board 500 is electrically connected to the water level sensing unit 400 to compare a value detected by the water level sensing unit 400 with a preset water level limit value to control the power supplied to the ceramic heater 200. That is, when the level value information detected by the level sensing unit 400 does not exceed the predetermined level limit value, the power is not supplied to the ceramic heater 200. If it is detected that the level is higher than the water level limit value, 200 to be supplied with power.

This prevents the ceramic heater 200 from being overheated and damaged due to the low water level in a state in which the ceramic heater 200 is not immersed in the fluid.

The heat transfer plate 610 is welded to one side of the discharge tube 120 so that the heat of the fluid transferred to the discharge tube 120 is transferred to the heat transfer plate 610, When the heat transmitted from the heat transfer plate 610 to the bimetal switch 620 through the bimetal switch 620 is higher than a predetermined temperature, the bimetal switch 620 is short-circuited to cut off the power supply to the ceramic heater 200.

In general, the fluid supplied to the hot water mat is about 50 ° C. When the heat transmitted from the heat transfer plate 610 in the bimetallic switch 620 is detected to be 80 ° C or more, the switch is short- To be turned off.

4, a temperature sensor 700 is installed in a supply pipe 110 and a discharge pipe 120 of a hot water supply device according to an embodiment of the present invention, The fluid temperature at the inlet side where the fluid flows and the fluid temperature at the outlet side where the fluid is discharged are controlled to control the temperature of the fluid at a constant temperature.

An air discharge pipe 140 is separately formed at the upper end of the heating pipe 130 to adjust the air pressure generated by the internal temperature of the heating pipe 130 to discharge the inside air to the outside.

Hereinafter, a method of installing and operating the hot water supply apparatus according to an embodiment of the present invention will be described in detail.

5 is a view showing a state in which a hot water supply device according to an embodiment of the present invention is installed on a hot water mat.

The cap body 310 is rotated and coupled to the lower end of the heating tube 130 of the heat exchange body 100 and then the ceramic heater 200 is inserted into the first through hole 311 of the cap body 310, . The elastic ring 330 is inserted into the receiving groove 313 of the cap body 310 and then the ceramic heater 200 is inserted into the second through hole 321 of the coupling plate 320, And the upper surface of the coupling plate 320 is brought into close contact with the lower engaging surface 312 of the cap body 310. [ The inner portion of the elastic ring 330 is pushed by the first and second through holes 311 and 321 while the elastic ring 330 is elastically changed by the pressing force of the coupling plate 320, And is brought into close contact with the side surface.

In this way, the outer surface of the ceramic heater 200 is pressed by the elastic ring 330 to maintain a predetermined position in the heating tube 130.

The bimetallic switch 620 is assembled to the heat transfer plate 610 and the supply pipe 110 and the discharge pipe 120 of the heat exchange body 100 are connected to each other. ) To each hose of the hot water mat.

When the fluid is supplied to the inside of the heating pipe 130 through the supply pipe 110 in the assembled state, the water level sensing unit 400 senses the level of the fluid supplied to the inside of the heating pipe 130, The power is supplied to the ceramic heater 200.

The heated fluid is heated by the heating pipe 130 through the discharge pipe 120 installed in the upper portion of the heating pipe 130. The heated fluid is heated by the heating pipe 130 to the upper surface of the ceramic heater 200, To be supplied into the mat.

At this time, the heat of the fluid moving to the discharge pipe 120 is transferred to the heat transfer plate 610 welded to the discharge pipe 120. The heat is transferred to the bimetal switch 620, The bimetallic switch 620 is short-circuited and the power supply to the ceramic heater 200 is cut off.

As described above, the present invention is convenient to assemble the hot water supply device, and the fluid is moved along the longitudinal direction of the heating pipe 130 to be heated to a predetermined temperature, so that the structure is very simple, The temperature of the fluid flowing into the hot water mat is constantly sensed, thereby stopping the operation of the ceramic heater 200 when the fluid is above a predetermined temperature, thereby reducing energy consumption .

6 is a cross-sectional view showing another embodiment of the heat exchange body according to the present invention.

Referring to the drawings, in another embodiment of the heat exchanging body according to the present invention, in order to further enlarge the contact area where the elastic ring 330 elastically deformed by the pressing of the coupling plate 320 is brought into close contact with the ceramic heater 200, The edge portion formed by the receiving groove 313 of the cap body 310 and the outer peripheral surface of the first through hole 311 is formed as the first inclined surface 314 and the upper surface of the coupling plate 320 and the second through hole The elastic ring 330 is pushed to the outer surface of the ceramic heater 200 along the first and second inclined surfaces 314 and 324 so that the ceramic heater 200 is further expanded.

By thus enlarging the contact area of the elastic ring 330 with the ceramic heater 200, the ceramic heater 200 can be more stably fixed.

The first and second inclined surfaces 314 and 324 are preferably formed as a post-process through grinding or the like in consideration of the contact area, the size of the elastic ring 330, and the like.

7 is a cross-sectional view showing another embodiment of the heat exchange body according to the present invention.

Referring to the drawings, in another embodiment of the heat exchanging body according to the present invention, it is possible to maximize the contact area even more than in the other embodiments, and even if the ceramic heater 200 is moved downward by gravity, So that the adhesion is further enhanced.

To this end, in another embodiment of the heat exchanging body 100, the corner portion formed by the receiving groove 313 of the cap body 310 and the outer peripheral surface of the first through hole 311 is formed as the first inclined surface 314, The second through hole 321 is formed in a downwardly projecting downward direction so that the elastic ring 330 which is compressed and elastically deformed by the coupling plate 320 is pushed toward the second through hole 321, 321 are pushed downward by a certain angle. The outer circumferential surface of the first through hole 311 is also partially pushed along the first inclined surface 314 so that the contact area with the outer surface of the ceramic heater 200 is further maximized.

Particularly, even if the second through hole 321 is formed by the upper light blocking structure and the ceramic heater 200 strikes downward due to gravity, the diameter of the second through hole 321 is narrowed downward and the ceramic heater 200 is brought into close contact with the ceramic heater 200 The elastic ring 330 is caught on the lower end side of the second through hole 321 like a wedge, and the pressing force is further strengthened.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the scope of the appended claims should include all such modifications and changes as fall within the scope of the present invention.

100: Heat exchange body portion
110: supply pipe 120: discharge pipe
130: Heating pipe
200: Ceramic heater
300: heater fixing lid part
310: cap body 311: first through hole
312: engagement surface 312a: first screw engagement hole
313: receiving groove 314: first inclined surface
320: coupling plate 321: second through hole
322a: second screw fastening hole 324: second slanted surface
330: elastic ring
400: water level sensing part 410: upper connection body
500: control board
610: heat transfer plate
620: Bimetallic switch

Claims (5)

And a heating pipe through which a fluid is supplied inward through a supply pipe connected to the lower side and a fluid heated inside is discharged to the outside through a discharge pipe connected to an upper side of the heat exchange body;
A ceramic heater which is drawn inward along the longitudinal direction of the heating tube and heats the fluid supplied to the heating tube;
A heater fixing lid coupled to a lower end of the heating tube, the heater fixing lid including a through hole through which the ceramic heater penetrates;
A water level sensing unit coupled to an upper end of the heating tube and sensing a level of the fluid supplied to the inside of the heating tube;
A control board for controlling power supply of the ceramic heater by comparing a value detected by the water level sensing unit with a predetermined water level limit value; The hot water supply device comprising:
The method of claim 1, wherein
The heater fixing lid
A first through hole having a diameter larger than the diameter of the ceramic heater is inserted through the center of the upper end portion of the ceramic heater and a lower end of the first through hole is connected to the lower end of the ceramic heater, A cap body having a coupling surface on which a plurality of threaded fastening holes are formed and having a stepped receiving groove formed upwardly from the coupling surface along an outer edge of the first insertion hole;
An elastic ring inserted into the receiving groove,
And a coupling plate having a second through hole corresponding to the first through hole formed at the center thereof and a second screw coupling hole corresponding to the first screw coupling hole formed outside the second through hole,
The ceramic heater is inserted into the first through hole of the cap body and the screw is coupled to the first and second screw fasteners so that the upper surface of the coupling plate is brought into close contact with the coupling surface in a state where the elastic ring is inserted into the receiving groove. If so,
The elastic ring is pressed onto the upper surface of the coupling plate and is pushed into the space between the first and second through holes and the outer surface of the ceramic heater so that one side of the elastic ring closely contacts the outer surface of the ceramic heater .
3. The method of claim 2,
Wherein an edge portion formed by the receiving groove of the cap body and the outer peripheral surface of the first through hole is formed as a first inclined surface and a corner portion formed by the upper surface of the coupling plate and the outer peripheral surface of the second through hole is formed as a second inclined surface Wherein the hot water supply device is a hot water supply device.
3. The method of claim 2,
Wherein a corner portion formed by the receiving groove of the cap body and the outer peripheral surface of the first through hole is formed as a first inclined surface and the second through hole is formed as a downwardly convex lowered structure.
The method according to claim 1,
A heat transfer plate coupled to one side of the discharge pipe to transfer fluid heat transferred to the discharge pipe, and a bimetal switch installed on the heat transfer plate,
Wherein when the heat transmitted from the heat transfer plate to the bimetallic switch is higher than or equal to a predetermined temperature, the power supply to the ceramic heater is cut off.

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