KR102369393B1 - Electric rapid water heater using cylindrical instantaneous heater - Google Patents

Abstract

An embodiment of the present invention provides an electric instantaneous water heater using a cylindrical instantaneous heater capable of rapidly supplying hot water. Here, the electric instantaneous water heater using a cylindrical instantaneous heater includes a case, a first flow path part, a cylindrical instantaneous heater, a second flow path part, a first blocking part, and a current control terminal part. The case has an inlet port through which water is introduced, and an outlet port through which water is discharged. The first flow passage is provided on the inside of the case and is connected to the water inlet port to guide the movement of the inflowing water. The cylindrical instantaneous heater is connected to the first flow passage and heats water. The second flow passage is provided inside the case, and one end is connected to the cylindrical instantaneous heater and the other end is connected to the water outlet port to guide the movement of heated water. The first blocking unit is connected to the first flow path part, senses the internal pressure of the first flow path part, and blocks the current supplied to the cylindrical instantaneous heater when the sensed internal pressure is below the reference pressure. The current control terminal part is connected to the first flow path part at the front end of the cylindrical instantaneous heater, and is electrically connected to the cylindrical instantaneous heater and the first blocking part. The current control terminal part has a body connected to the first flow path part to guide the movement of water, a terminal part having a plurality of terminals to which respective wires connecting the first blocking part and the cylindrical instantaneous heater are connected, and the body between the body and the terminal part and a heat dissipation plate in close contact with the terminal part and heat exchange between the terminal part and water passing through the body to cool the terminal part.

Description

Electric instantaneous water heater using a cylindrical instantaneous heater {ELECTRIC RAPID WATER HEATER USING CYLINDRICAL INSTANTANEOUS HEATER}

The present invention relates to an electric instantaneous water heater using a cylindrical instantaneous heater, and more particularly, to an electric instantaneous water heater using a cylindrical instantaneous heater capable of rapidly supplying hot water.

Generally used water heaters are divided into combustion-type water heaters that heat water with combustion heat and electric water heaters that heat water with an electric heater. do.

On the other hand, a conventional electric water heater has a water tank in which water is stored, and a heating unit is provided inside the water tank to heat the water stored in the water tank. As an example, Korean Patent Publication No. 1160795 (announced on June 27, 2012) discloses a hot water tank in which cold raw water is stored, and a plurality of electric heaters installed inside the hot water tank to heat water in the hot water tank.

However, the water storage method in which water is stored in the water tank and the water stored in the water tank is heated has a limitation in rapidly heating and supplying water.

Republic of Korea Patent Publication No. 1160795 (2012.06.27. Announcement)

In order to solve the above problems, the technical problem to be achieved by the present invention is to provide an electric instantaneous water heater using a cylindrical instantaneous heater capable of rapidly supplying hot water.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

In order to achieve the above technical problem, one embodiment of the present invention is a case having an inlet port through which water is introduced, and an outlet port through which water is discharged; a first flow path provided on the inside of the case and connected to the acquisition port to guide the movement of the inflowing water; a cylindrical instantaneous heater connected to the first flow path and heating water; a second flow path provided inside the case, one end connected to the cylindrical instantaneous heater and the other end connected to the water outlet port to guide the movement of heated water; a first blocking unit connected to the first flow path part, sensing the internal pressure of the first flow path part, and blocking the current supplied to the cylindrical instantaneous heater when the sensed internal pressure is less than or equal to a reference pressure; and a current control terminal connected to the first flow passage at the front end of the cylindrical instantaneous heater, and electrically connected to the cylindrical instantaneous heater and the first blocking portion, wherein the current control terminal portion includes the first passage and A body connected to guide the movement of water, a terminal portion having a plurality of terminals to which respective wires connecting the first blocking portion and the cylindrical instantaneous heater are connected, and the body and the terminal portion between the body and the terminal portion It provides an electric instantaneous water heater using a cylindrical instantaneous heater, characterized in that it has a heat sink that is in close contact and heat exchanges between the terminal part and the water passing through the body to cool the terminal part.

In an embodiment of the present invention, a pressure reducing valve provided at the front end of the first flow path part and maintaining a constant pressure of water flowing through the inlet port; includes, wherein the first shutoff part is at the rear end of the pressure reducing valve It may be connected to the first flow path part.

In an embodiment of the present invention, it is provided in the cylindrical instantaneous heater, is electrically connected to the first blocking part, and blocks the current supplied to the cylindrical instantaneous heater when the temperature of the cylindrical instantaneous heater exceeds the reference temperature It may include a second blocking unit.

In an embodiment of the present invention, the first blocking part and the second blocking part are electrically connected, and at least a portion of a conductor electrically connecting the first blocking part and the second blocking part is exposed to the outside. It may include a substrate unit.

In an embodiment of the present invention, the case has a drain port, is provided at the front end of the second flow path part, and when the internal pressure of the second flow path part exceeds a reference pressure, the hot water discharged from the cylindrical instantaneous heater is the drain A safety valve to be discharged to the port; may include.

In an embodiment of the present invention, a cover having a water storage groove formed in a depression, and covering the case; A shaft rotatably coupled to the water storage groove, a knob coupled to the upper end of the shaft to rotate the shaft, coupled to the lower end of the shaft and variable resistance according to the rotation of the shaft to adjust the amount of heat generated by the cylindrical instantaneous heater and a knob assembly having a variable resistor and a sealing member provided between the water storage groove and the shaft to block the inflow of external moisture.

In an embodiment of the present invention, the water storage groove includes a first support rib extending in the inner direction of the case, a bottom surface connected to a lower end of the first support rib, and a lower end connected to the bottom surface, It is formed to extend outwardly of the case to form a water storage space together with the first support rib and the bottom surface, and has a second support rib having a through hole through which the shaft passes therein, and the sealing member includes the through hole. And it may be provided between the shaft.

In an embodiment of the present invention, the cylindrical instantaneous heater includes a pipe housing through which water moves inward, a first insulator coated on the outer surface of the pipe housing, and a conductive wire pattern portion coated on the outer surface of the first insulator; , a resistance pattern portion in contact with the conductive wire pattern portion and heated by the current applied to the conductive wire pattern portion, and a second insulator coated on outer surfaces of the conductive wire pattern portion and the resistance pattern portion.

According to an embodiment of the present invention, compared to the conventional water storage method in which an electric heater is installed inside a hot water tank to heat water in the hot water tank, the electric instantaneous water heater using the cylindrical instantaneous heater according to the present invention is a direct water type method. It can be implemented to instantly heat water in a short time.

In addition, according to an embodiment of the present invention, the current control terminal unit can cool the terminal unit by providing a heat sink between the body through which water moves and the terminal unit to exchange heat between the terminal unit and the water passing through the body. In addition, since the water passing through the body through heat exchange with the terminal unit can be preheated, thereafter, water heating in the cylindrical instantaneous heater can be made more effectively.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a perspective view showing an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.
2 is a perspective view showing the inside of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.
3 is a plan view showing the inside of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.
4 is a cross-sectional view showing a cylindrical instantaneous heater of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.
5 is an exemplary view showing a current control terminal of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.
6 is a configuration diagram showing the current control terminal of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.
7 is a cross-sectional view showing a knob assembly of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.
8 is a rear view showing an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in several different forms, and thus is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when it is said that a part is “connected (connected, contacted, coupled)” with another part, it is not only “directly connected” but also “indirectly connected” with another member in between. “Including cases where it is In addition, when a part "includes" a certain component, this means that other components may be further provided without excluding other components unless otherwise stated.

The terminology used herein is used only to describe specific embodiments, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, and one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

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

1 is a perspective view showing an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the inside of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention; 3 is a plan view showing the inside of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.

1 to 3, the electric instantaneous water heater using a cylindrical instantaneous heater is a case 100, a first flow passage 200, a cylindrical instantaneous heater 300, a second flow passage 400, the first shutoff It may include a unit 750 and a current control terminal unit 500 .

The case 100 may have an accommodating space inside. And, the case 100 may have an acquisition port 110 , an exit port 120 , a drain port 130 , and a wire holder 140 . The acquisition port 110 , the water outlet port 120 , the drain port 130 and the wire holder 140 may be formed on the sidewall of the case 100 , and may be integrally formed with the case 100 .

A water inlet pipe through which water is supplied from the outside may be connected to the water inlet port 110 , and an outlet pipe through which water is discharged to the outside may be connected to the water outlet port 120 . A power line 150 (refer to FIG. 6 ) for supplying electricity from the outside may be fixed to the wire holder 140 .

The first flow passage 200 may be provided on the inside of the case 100 , and may be connected to the acquisition port 110 to guide the movement of the inflowing water.

Hereinafter, for convenience of explanation, it will be described as front/front/front and rear/rear/rear based on the direction of water flow. That is, when the water moves from the first point to the second point, the first point will be described as the front end/front end/front, and the second point will be described as the rear end/rear end/rear.

The first flow path 200 includes a 1-1 flow path 210 forming a front end, a 1-3 flow path 230 forming a rear end, a 1-1 flow path 210, and a 1-3 flow path. It may have a 1-2 flow path 220 connecting the 230 .

The cylindrical instantaneous heater 300 may be connected to the first flow passage 200 and may heat the incoming water.

4 is a cross-sectional view showing a cylindrical instantaneous heater of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.

4 , the cylindrical instantaneous heater 300 includes a pipe housing 310 , a first insulator 320 , a conductive wire pattern part 330 , a resistance pattern part 340 and a second insulator 350 . can have

The pipe housing 310 may be formed in a cylindrical shape, and a front end may be connected to the first to third flow passages 230 at the rear end of the first flow passage 200 . The cylindrical instantaneous heater 300 is provided at the front end of the pipe housing 310 to have a first plug 301 connecting the front end of the pipe housing 310 and the 1-3 flow passages 230 .

In addition, the rear end of the pipe housing 310 may be connected to the front end of the second flow passage 400 . The cylindrical instantaneous heater 300 is provided at the rear end of the pipe housing 310 to have a second plug 302 connecting the rear end of the pipe housing 310 and the second flow passage 400 .

Water moving through the first flow path 200 may pass through the inside of the pipe housing 310 to move to the second flow path 400 . The inside of the pipe housing 310 may be a heating space in which moving water is heated. The pipe housing 310 may be made of various materials, for example, it may be made of a stainless material.

The first insulator 320 may be surface coated on the outer surface of the pipe housing 310 .

The conductive wire pattern part 330 may be coated on the outer surface of the first insulator 320 . Current controlled from the current control terminal unit 500 may be supplied to the conductive wire pattern unit 330 .

The resistance pattern part 340 may be in contact with the conductive wire pattern part 330 , and may be heated by a current applied to the conductive wire pattern part 330 .

The conductive wire pattern part 330 and the resistance pattern part 340 may form a planar structure, for example, a flexible thin sheet structure. The conductive wire pattern part 330 and the resistance pattern part 340 may be provided in the form of winding the pipe housing 310 in a spiral shape, but is not necessarily limited thereto.

The first insulator 320 may block the current applied to the conductive wire pattern part 330 from being conducted to the pipe housing 310 .

The second insulator 350 may be coated on the outer surfaces of the conductive wire pattern part 330 and the resistance pattern part 340 , and may block current applied to the conductive wire pattern part 330 from being conducted to the outside.

The current applied to the conductive wire pattern part 330 may be conducted toward the resistance pattern part 340 without being externally conducted through the first insulator 320 and the second insulator 350, and the current is conducted through the resistance pattern part At 340, heat is generated. The heat generated by the resistance pattern unit 340 heats the pipe housing 310 , and accordingly, the water moving inside the pipe housing 310 can be quickly heated. That is, compared to the conventional water storage method in which an electric heater is installed inside a hot water tank to heat the water in the hot water tank, the electric instantaneous water heater using the cylindrical instantaneous heater according to the present invention is implemented in a direct water type method so that it can be used in a short time. Instantly heat water.

On the other hand, the electric instantaneous water heater using a cylindrical instantaneous heater may include a pressure reducing valve (700).

The pressure reducing valve 700 may be provided at the front end of the first flow path unit 200 . The pressure reducing valve 700 may constantly maintain the pressure of water flowing in through the inlet port 110 .

The first shutoff part 750 may be connected to the first flow path part 200 , and may be provided at the rear end of the pressure reducing valve 700 . The first shutoff part 750 and the pressure reducing valve 700 may be connected by the 1-1 flow path 210 .

The first blocking unit 750 may sense the internal pressure of the first flow path unit 200 . The first blocking unit 750 may be a low pressure switch (LPS).

And, the current control terminal part 500 may be connected to the first flow path part 200 at the front end of the cylindrical instantaneous heater 300, and may be electrically connected to the cylindrical instantaneous heater 300 and the first blocking part 750. .

The first blocking unit 750 may block the current supplied to the cylindrical instantaneous heater 300 when the sensed internal pressure of the first flow path unit 200 is less than or equal to a preset reference pressure.

5 is an exemplary view showing a current control terminal of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention, and FIG. 6 is a current of an electric instantaneous electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention It is a configuration diagram showing the control terminal unit as the center.

5 and 6 , the current control terminal unit 500 may include a body 510 , a terminal unit 520 , and a heat sink 530 .

The body 510 may be connected to the first flow path part 200 and may have a flow path hole 511 for guiding the movement of water. The front end of the body 510 may be connected to the 1-2 flow path 220 , and the rear end of the body 510 may be connected to the 1-3 flow path 230 .

The terminal unit 520 may have a plurality of terminals 521 , 522 , and 523 .

A power line 190 connected through the wire holder 140 may be connected to the first terminal 521 . In addition, a wire connected to the first blocking part 750 may be connected to the second terminal 522 . Also, the first blocking unit 750 may be electrically connected to a second blocking unit 800 to be described later.

And, the electric instantaneous water heater using a cylindrical instantaneous heater may include a substrate portion (600). The substrate part 600 may be provided between the first blocking part 750 and the second blocking part 800 , and the first blocking part 750 and the second blocking part 800 are the substrate part 600 . can be electrically connected by

The substrate unit 600 may allow at least a portion of a conductor electrically connecting the first blocking unit 750 and the second blocking unit 800 to be exposed to the outside, thereby increasing the cooling efficiency of the conductor. can make it The substrate unit 600 may be fixed to a mounting holder 170 formed in the case 100 .

And, the third terminal 523 may be connected to a wire connected to the conductive wire pattern portion 330 of the cylindrical instantaneous heater (300). The terminal unit 520 may be, for example, a TRIAC (TRIode Alternating Current Switch).

The heat sink 530 may be provided between the body 510 and the terminal part 520 to be in close contact with the body 510 and the terminal part 520 . Since the terminal part 520 electrically connected to the cylindrical instantaneous heater 300 can be heated, it is important to cool it. can be done The water passing through the body 510 may be room temperature water, and thus the terminal unit 520 may be cooled. In addition, since the water passing through the body 510 through heat exchange with the terminal part 520 can be preheated, thereafter, heating of the water in the cylindrical instantaneous heater 300 can also be made more effectively.

Again, referring further to FIGS. 2 and 3 , an electric instantaneous water heater using a cylindrical instantaneous heater may include a second blocking unit 800 .

The second blocking part 800 may be provided in the cylindrical instantaneous heater 300 . Specifically, the second blocking part 800 may be connected to the pipe housing 310 of the cylindrical instantaneous heater 300 .

The second blocking unit 800 may block the current supplied to the cylindrical instantaneous heater 300 when the temperature of the pipe housing 310 exceeds a preset reference temperature. The second blocking part 800 may include, for example, a bimetal.

Since the first blocking part 750 and the second blocking part 800 can be connected in series, at least one of the first blocking part 750 and the second blocking part 800 turns off the cylindrical instantaneous heater 300 ( Off), the operation of the cylindrical instantaneous heater 300 may be stopped.

And, the electric instantaneous water heater using a cylindrical instantaneous heater may include a safety valve (850).

The safety valve 850 may be provided at the front end of the second flow passage 400 . The safety valve 850 may allow the hot water discharged from the cylindrical instantaneous heater 300 to be discharged to the drain port 130 when the internal pressure of the second flow passage 400 exceeds a preset reference pressure.

The safety valve 850 and the drain port 130 may be connected by a drain passage 860 . The safety valve 850 may have an elastic member (not shown) that opens the safety valve 850 when the internal pressure of the second flow passage 400 exceeds a preset reference pressure. When the internal pressure of the second flow passage 400 exceeds the preset reference pressure and the elastic member is deformed, the drain hole of the safety valve 850 is opened and connected to the drain passage 860, and the heated hot water is transferred to the drain passage ( 860) can be discharged.

On the other hand, if the internal pressure of the second flow passage 400 does not exceed the preset reference pressure, the safety valve 850 may maintain a state connected to the second flow passage 400 , and hot water is heated in the second flow passage portion ( 400) through the water outlet port 120 may be moved.

7 is a cross-sectional view showing the knob assembly of an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.

7, the electric instantaneous water heater using a cylindrical instantaneous heater may include a cover 900 and a knob assembly 940.

The cover 900 may be detachably attached to the case 100 to cover the case 100 . A detachable button 150 may be formed in the case 100 so that the cover 900 can be easily detached from the case 100 , and the detachable button 150 is detachable from the cover 900 . , see FIG. 1) may be formed.

In addition, the cover 900 may have a water storage groove 910 .

The water storage groove 910 may be recessed in the cover 900 . In this embodiment, the water storage groove 910 is shown to be formed in the center of the cover 900, but the location of the water storage groove 910 is not necessarily limited thereto.

The water storage groove 910 may have a first support rib 911 , a bottom surface 912 , and a second support rib 913 .

The first support rib 911 may be formed to extend in the inner direction of the case 100 , and the bottom surface 912 may be connected to the lower end of the first support rib 911 .

The second support rib 913 may have a lower end connected to the bottom surface 912 , and may be formed to extend outwardly of the case 100 . Accordingly, the second support rib 913 may form a water storage space 915 together with the first support rib 911 and the bottom surface 912 . A through hole 914 may be formed inside the second support rib 913 .

The knob assembly 940 may include a shaft 950 , a knob 960 , a variable resistor 955 , and a sealing member 970 .

The shaft 950 may be rotatably provided through the through hole 914 .

The sealing member 970 may be provided between the through hole 914 and the shaft 950 and may block the inflow of external moisture.

Since an electric instantaneous water heater using a cylindrical instantaneous heater can be provided in a humid space such as a toilet or a bathroom, water may be on the surface of the electric instantaneous water heater using a cylindrical instantaneous heater when water droplets form or when a user takes a shower. there is. And, such water may be introduced between the knob 960 and the cover 900 .

However, in the present invention, since the water storage groove 910 is formed, the incoming water is stored in the water storage space 915 so that the incoming water is prevented from flowing directly between the through hole 914 and the shaft 950 . can

In addition, since the sealing member 970 is provided between the through hole 914 and the shaft 950 , even if the incoming water seeps between the through hole 914 and the shaft 950 , the sealing member 970 . Thus, it is possible to effectively prevent water from flowing into the inside of the case 100 .

A stepped portion 916 having a shape corresponding to the knob 960 may be formed in the cover 900 , and a lower end of the knob 960 may be inserted into the stepped portion 916 . Through this, an area facing between the knob 960 and the cover 900 may be increased. That is, the gap between the knob 960 and the cover 900 may be widened. When water flows into the gap, the surface tension of water is better formed, so that the inflow of water is more blocked. .

The variable resistor 955 may be coupled to the lower end of the shaft. The variable resistor 955 may be electrically connected to a wire connected to the cylindrical instantaneous heater 300, and may be changed according to the rotation of the shaft 950 to adjust the amount of heat generated by the cylindrical instantaneous heater 300, and the cylindrical instantaneous The heater 300 may be turned on/off.

An electric instantaneous water heater using a cylindrical instantaneous heater may have an indicator light (920). The indicator light 920 may be provided on the cover 900 so that an upper portion thereof may be exposed to the outside. When the cylindrical instantaneous heater 300 is turned on (ON), the indicator light 920 is turned on to inform the user that the cylindrical instantaneous heater 300 is turned on.

A first display unit 931 for displaying “stop” and a second display unit 932 for displaying “high temperature” may be formed on the cover 900 , and the knob 960 may be connected to the first display unit 931 or the second display unit. By pointing to 932, the user can recognize the operating temperature of the cylindrical instantaneous heater 300.

In addition, a third display unit 933 indicating “low temperature” may be formed on the cover 900 . When the knob 960 points to the third display unit 933 , the amount of heat generated by the cylindrical instantaneous heater 300 may be lower than that at “high temperature”. For example, when the knob 960 points to the second display unit 932 , a voltage of 220V may be supplied to the cylindrical instantaneous heater 300 by the variable resistor 955 , and the knob 960 indicates the third display unit When pointing to 933, a voltage of 110V may be supplied to the cylindrical instantaneous heater 300 by the variable resistor 955.

8 is a rear view showing an electric instantaneous water heater using a cylindrical instantaneous heater according to an embodiment of the present invention.

As shown in FIG. 8 , an electric instantaneous water heater using a cylindrical instantaneous heater may have a bracket 180 .

The bracket 180 may be provided on the rear surface of the case 100 . A pair of hook grooves 181 may be formed in the bracket 180 . By allowing a nail blocked in the wall to be coupled to the hook groove 181, an electric instantaneous water heater using a cylindrical instantaneous heater can be easily installed on the wall.

In addition, the bracket 180 may have a pair of through-holes 182 . In a state in which the bracket 180 is separated from the case 100, the nail is driven into the wall through the through-hole 182, and then, the bracket 180 is coupled to the case 100, whereby a cylindrical instantaneous heater is manufactured. The used electric instantaneous water heater can be easily installed on the wall.

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

100: case
200: first euro part
300: cylindrical instantaneous heater
400: second euro part
500: current control terminal unit
600: substrate unit
700: pressure reducing valve
750: first blocking unit
800: second blocking unit
850: safety valve
900: cover
940: knob assembly
955: variable resistance

Claims (8)

A case having an inlet port through which water is introduced, and an outlet port through which water is discharged;
a first flow path provided on the inside of the case and connected to the acquisition port to guide the movement of the inflowing water;
a cylindrical instantaneous heater connected to the first flow path and heating water;
a second flow path provided inside the case, one end connected to the cylindrical instantaneous heater and the other end connected to the water outlet port to guide the movement of heated water;
a first blocking unit connected to the first flow path part, sensing the internal pressure of the first flow path part, and blocking the current supplied to the cylindrical instantaneous heater when the sensed internal pressure is less than or equal to a reference pressure;
a current control terminal connected to the first flow path at the front end of the cylindrical instantaneous heater, and electrically connected to the cylindrical instantaneous heater and the first blocking part;
a second blocking unit provided in the cylindrical instantaneous heater and blocking the current supplied to the cylindrical instantaneous heater when the temperature of the cylindrical instantaneous heater exceeds a reference temperature; And
Includes; substrate;
The current control terminal unit
a body connected to the first flow path part to guide the movement of water;
A terminal portion having a plurality of terminals to which respective wires connecting the first blocking portion and the cylindrical instantaneous heater are connected;
and a heat sink that is in close contact with the body and the terminal part between the body and the terminal part and heat exchanges between the terminal part and water passing through the body to cool the terminal part,
The substrate portion is provided between the first blocking portion and the second blocking portion, and is fixed to a seating holder formed in the case,
The substrate part electrically connects the first blocking part and the second blocking part, and at least a portion of the conductor is formed so that cooling efficiency of the conductor electrically connecting the first blocking part and the second blocking part is increased. Electric instantaneous water heater using a cylindrical instantaneous heater, characterized in that it is exposed to the outside. According to claim 1,
It includes; a pressure reducing valve provided at the front end of the first flow path part and maintaining a constant pressure of water flowing in through the inlet port;
The electric instantaneous water heater using a cylindrical instantaneous heater, characterized in that the first shut-off part is connected to the first flow path part at the rear end of the pressure reducing valve. delete delete According to claim 1,
The case has a drain port,
A safety valve provided at the front end of the second flow path part and allowing hot water discharged from the cylindrical instantaneous heater to be discharged to the drain port when the internal pressure of the second flow path part exceeds a reference pressure; Electric instantaneous water heater using instantaneous heater. According to claim 1,
a cover having a water storage groove recessed and covering the case;
A shaft rotatably coupled to the water storage groove, a knob coupled to the upper end of the shaft to rotate the shaft, coupled to the lower end of the shaft and variable resistance according to the rotation of the shaft, so that the amount of heat generated by the cylindrical instantaneous heater is adjusted An electric instantaneous water heater using a cylindrical instantaneous heater, comprising: a variable resistor; and a knob assembly provided between the water storage groove and the shaft and having a sealing member that blocks the inflow of external moisture. 7. The method of claim 6,
The water reservoir is
a first support rib extending in the inner direction of the case;
a bottom surface connected to the lower end of the first support rib;
a second support rib having a lower end connected to the bottom surface, extending outwardly of the case to form a water storage space together with the first support rib and the bottom surface, and having a through hole through which the shaft penetrates; have,
The sealing member is an electric instantaneous water heater using a cylindrical instantaneous heater, characterized in that provided between the through hole and the shaft. According to claim 1,
The cylindrical instantaneous heater is
A pipe housing through which water moves inward, and
a first insulator coated on the outer surface of the pipe housing,
a conductive wire pattern portion coated on the outer surface of the first insulator;
a resistance pattern part in contact with the conductive wire pattern part and being heated by a current applied to the conductive wire pattern part;
An electric instantaneous water heater using a cylindrical instantaneous heater, characterized in that it has a second insulator coated on the outer surfaces of the conductive wire pattern part and the resistance pattern part.

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