KR101689790B1 - Heater for continuous hot water - Google Patents

Abstract

The present invention relates to a heater for continuous hot water. According to an embodiment of the present invention, the heater for continuous hot water comprises: one or more heating parts heated by the currents applied from the outside to generate heat; a first body part which has a receiving space where the heating parts are arranged, and one or more flow paths where the water flowing from the outside flows on a top end; a first protection layer which has a shape corresponding to the flow paths, adhering to the flow paths; and a second body part coupled to a top end of the first body part, thereby improving durability of the body part by preventing the flow paths formed in the body part from corroding.

Description

{HEATER FOR CONTINUOUS HOT HOT WATER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater for continuous hot water heating, and more particularly, to a heater for continuous hot water heating capable of preventing corrosion of the flow path formed in the body portion and improving durability of the body portion.

Generally, an electric heater (an electric heater) is a heat generating device that generates heat through a current through a resistance wire, and is used in various fields such as an electric rice cooker, an electric iron, and an electric heating device.

A heater for continuous hot water heating, which is one of such electric heaters, is widely used in various fields such as a coffee vending machine, a cold water purifier, and steam washing. Such a heater for continuous hot water heating is widely used in general households, restaurants, offices, The use range thereof is gradually increasing.

The heater for continuous hot water heating may be configured such that a heating element such as a sheath heater is installed on the outer wall of a hot water tank containing water or other liquid to be heated or inside thereof and then the resistance heat of the heating element is transferred to the inside of the hot water tank , A method of heating the content of the liquid phase by directly contacting with water or other liquid, a method of heating the content of the liquid phase by heat exchange between the heating element and a channel through which water or other liquid flows, and the like.

Conventionally, a heater for continuous hot water heating comprises a body having a cylindrical shape or a rectangular parallelepiped shape having a metal material such as aluminum, a heating element disposed inside the body, and a flow path for hot water heated by the heating element. At this time, a pair of terminals to which a current is applied from the outside is exposed to the outside of the body, and a water inlet port through which water is introduced and a water outlet through which water is discharged may be exposed to the outside of the body.

However, since the body constituting the conventional continuous hot water heating heater is made of a metal material such as aluminum material, the flow path formed in the body is exposed to water or other liquid and is corroded, so that the durability of the heater for continuous hot water heating is deteriorated there was. In order to prevent this, the surface of the flow path is coated with ceramic or Teflon, but there is a limit in that corrosion by water or other liquid or heat can not be completely prevented.

Therefore, there is a demand for a heater for continuous hot water heating which can prevent corrosion of the flow path formed in the body portion and improve the durability of the body portion.

Disclosure of the Invention The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a protective layer which is bonded to a body part and is in close contact with a flow- Thereby preventing corrosion and improving the durability of the body part.

The technical problem of the present invention is not limited to those mentioned above, and another technical problem which is not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a heater for continuous hot water heating according to a first embodiment of the present invention includes: at least one heat generating part heated by an external current to generate heat; And at least one flow path through which water introduced from the outside flows is formed on the upper end; and a second body part having a shape corresponding to the at least one flow path, And a second body part coupled to an upper end of the first body part.

Preferably, the first protective layer is produced by a pressing process using a copper material or a metal plate made of stainless steel.

For example, the first body part is manufactured by a die casting process using a metal made of aluminum.

As another example, the first body part is manufactured by a double injection process using a metal made of aluminum in a state where the first protective layer is disposed at a position corresponding to the at least one flow path.

The second body portion may be made of copper or stainless steel.

The heater for continuous hot water heating may further include a second protective layer disposed between the first body portion and the second body portion and made of a copper material or a metal plate made of stainless steel.

According to another aspect of the present invention, there is provided a heater for continuous hot water heating according to the second aspect of the present invention, comprising: at least one heat generating part heated by a current applied from the outside to generate heat; And at least one second flow path having a shape corresponding to the at least one first flow path is formed at the lower end of the first body portion, at least one first flow path formed at an upper end thereof A second body portion, a first protective layer coupled to an upper end of the first body portion and having a shape corresponding to the at least one first flow path, the first protective layer being in close contact with the at least one first flow path, And a second protective layer coupled to the lower end and having a shape corresponding to the at least one second flow path, the second protective layer being in close contact with the at least one second flow path, At least one flow path through which water flows from the outside when the flow path and the at least one second flow path are vertically coupled is formed.

Preferably, the first protective layer and the second protective layer are each formed by a pressing process using a copper material or a metal plate made of stainless steel.

For example, the first body portion and the second body portion are each manufactured by a die casting process using a metal made of aluminum.

As another example, the first body portion and the second body portion may be arranged such that the first protective layer and the second protective layer are respectively disposed at positions corresponding to the at least one first flow path and the at least one second flow path, respectively And is produced by a double injection process using a metal of aluminum material.

The details of other embodiments are included in the detailed description and drawings.

According to the heater for continuous hot water heating according to the embodiments of the present invention, since the protective layer is attached to the body portion and is in close contact with the flow path of water from the outside, corrosion of the flow path formed in the body portion is prevented, Can be improved.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view schematically showing a structure of a heater for continuous hot water heating according to a first embodiment of the present invention.
2 is an exploded perspective view schematically showing a structure of a heater for continuous hot water heating according to the first embodiment of the present invention.
3 is a plan view and a bottom view schematically showing the structure of a heater for continuous hot water heating according to the first embodiment of the present invention.
4 is a longitudinal sectional view schematically showing the structure of a heater for continuous hot water heating according to the first embodiment of the present invention.
5 is a flowchart showing an example of a method of manufacturing a heater for continuous hot water heating according to the first embodiment of the present invention.
6 is a flowchart showing another example of a method for manufacturing a heater for continuous hot water heating according to the first embodiment of the present invention.
7 is a longitudinal sectional view showing a state in which the heater for continuous hot water heating according to the first embodiment of the present invention further includes a second protective layer.
8 is a perspective view schematically showing a structure of a heater for continuous hot water heating according to a second embodiment of the present invention.
9 is an exploded perspective view schematically showing a structure of a heater for continuous hot water heating according to a second embodiment of the present invention.
10 is a longitudinal sectional view schematically showing a structure of a heater for continuous hot water heating according to a second embodiment of the present invention.
11 is a flowchart showing an example of a method of manufacturing a heater for continuous hot water heating according to the second embodiment of the present invention.
12 is a flowchart showing another example of the method for manufacturing a heater for continuous hot water heating according to the second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

In the following description of the embodiments of the present invention, descriptions of techniques which are well known in the technical field of the present invention and are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated. Also, the size of each component does not entirely reflect the actual size. In the drawings, the same or corresponding components are denoted by the same reference numerals.

Hereinafter, the present invention will be described with reference to the drawings for explaining a heater for continuous hot water heating according to embodiments of the present invention.

FIG. 1 is a perspective view schematically showing a structure of a heater for continuous hot water heating according to a first embodiment of the present invention, FIG. 2 is a perspective view schematically showing a structure of a heater for continuous hot water heating according to a first embodiment of the present invention, 3 is a plan view and a bottom view schematically showing the structure of the heater for continuous hot water heating according to the first embodiment of the present invention, and FIG. 4 is a plan view and a bottom view of the heater for continuous hot water heating according to the first embodiment of the present invention. Fig. 3 is a vertical cross-sectional view schematically showing the structure thereof.

3 (a) is a plan view showing the structure of the heater 100 for continuous hot water heating according to the first embodiment of the present invention, and FIG. 3 (b) is a plan view showing the structure of the heater 100 according to the first embodiment of the present invention 1 is a bottom view showing a structure of a heater 100 for continuous hot water heating.

1 to 4, the heater 100 for continuous hot water heating according to the first embodiment of the present invention includes at least one heat generating portion 110, a first body portion 120, And a first protective layer 140. The first protective layer 140 may include a first protective layer 130 and a second protective layer 140. Referring to FIG.

The heat generating unit 110 generates heat by being heated by a current applied from the outside, and can generate hot water by heating water or other liquid (hereinafter, referred to as 'water') introduced from the outside. At least one heat generating unit 110 may be provided as needed.

As shown in FIG. 3 (b), the heat generating portion 110 includes a pipe-shaped body 111 having a substantially circular cross section and bent at its center to form a U-shaped body as a whole, And a pair of connection terminals 112, 112a and 112b for reception. A coil-shaped heating element 111a may be disposed inside the body 111 constituting the heating portion 110. The heating element 111a may be formed of a nickel-chromium alloy (nichrome wire), an iron-chromium-aluminum Alloys, nickel-chromium-iron alloys, and the like.

The pair of connection terminals 112, 112a and 112b, which apply current to the heating element 111a provided inside the heating portion 110, are connected to each other when the heating portion 110 has a U- They can be installed at the same position because they face the same direction. In this case, the entire size of the heater 100 for heating the continuous hot water can be reduced, and maintenance and the like are easy.

3, one heat generating portion 110 having a U-shape is horizontally disposed, but the present invention is not limited thereto. The structure, number, and arrangement of the heat generating portion 110 can be determined by a person skilled in the art It can be changed at any time.

Referring again to FIG. 2, the first body part 120 includes a receiving space 121 in which at least one heat generating part 110 is disposed, and at least one flow path 122 may be formed at an upper end thereof. have. 2 and 3, the accommodating space 121 has a "U" shape in the lower end of the first body portion 120 so as to be substantially the same as the shape of the at least one heat generating portion 110 .

The at least one flow path 122 may be formed in a zigzag shape along the upper end of the first body part 120 to increase heat exchange efficiency with at least one heat generating part 110, . 4 shows an example in which one flow path 122 is formed in a zigzag shape having a semicircular cross section, the number of flow paths 122, sectional shape, arrangement type, and the like can be changed by a person skilled in the art.

Meanwhile, the first body part 120 can be manufactured using a metal of aluminum, which is relatively inexpensive. As will be described later, the first body part 120 may be manufactured by a die casting process using a metal made of aluminum or a double injection process.

The second body part 130 may be coupled to the upper end of the first body part 120. 2, the second body part 130 has a rectangular parallelepiped shape having the same size as the first body part 120. However, the shape of the second body part 130 is not limited thereto It can be changed at any time.

Preferably, the second body portion 130 may be made of a copper material or a stainless material. 4, when the second body part 130 is made of a copper material or a stainless steel material, when the first body part 120 is coupled to the upper end of the first body part 120, It is possible to prevent at least one flow path P from being corroded by water or heat.

The first protective layer 140 is coupled to the upper end of the first body portion 120 and has a shape 141 corresponding to at least one flow path 122 and is in close contact with at least one flow path 122 .

As shown in FIG. 2, the first passivation layer 140 has a substantially thin plate shape, and may be made of a copper material or a metal plate made of stainless steel, which is preferably resistant to corrosion by water or heat. In addition, the first passivation layer 140 may be manufactured by a press process using a copper material or a metal made of stainless steel.

As described above, the heater 100 for continuous hot water heating according to the first embodiment of the present invention is provided with the protection layer which is attached to the body portion and is in close contact with the flow path P through which water flows from the outside, Corrosion of the flow path P can be prevented and durability of the body part can be improved.

The first protective layer 14 shown in FIGS. 2 and 4 has a shape covering all the upper ends of the first body part 120, but may be formed only at a position adjacent to the at least one flow path 122 .

Hereinafter, a method of manufacturing the heater 100 for continuous hot water heating according to the first embodiment of the present invention will be described in detail with reference to FIGS. 5 and 6. FIG.

5 is a flowchart showing an example of a method of manufacturing a heater for continuous hot water heating according to the first embodiment of the present invention.

As shown in FIG. 5, in order to manufacture the heater 100 for continuous hot water heating, at least one heat generating portion 110 which is heated by an external current to generate heat may be provided (S110 ).

As shown in FIGS. 2 and 3, the heat generating portion 110 includes a pipe-shaped body 111 having a substantially circular cross section and bent at its center to form a U-shaped body as a whole, And a pair of connection terminals 112, 112a, and 112b.

Although not shown in detail, in order to manufacture the heat generating portion 110, a pipe-shaped body 111 penetrating in the longitudinal direction is manufactured, and an alloy resistance wire such as a nickel-chromium alloy (nichrome wire) is spirally bent A body 111 of a U shape can be formed by bending a central portion of the body 111 after the heat generating body 111a is formed into a spring shape so as to be manufactured inside the body 111. [

5, after at least one heat generating portion 110 is manufactured (S110), a receiving space 121 in which at least one heat generating portion 110 is disposed is formed, and at least one And a first body part 120 having a flow path 122 formed therein (step S120).

3 and 4, in the first body part 120, at least one heat generating part 110 is disposed in a predetermined position (i.e., the accommodation space 121) And can be produced by a die casting process using a metal. As described above, when the die casting process is used, since the product dimensions are accurate, there is an advantage that post-processing is hardly required, the mechanical properties are excellent, and mass production is possible.

5, after the first body part 120 is manufactured (S120), the first body part 120 is coupled to the upper end of the first body part 120 and has a shape 141 corresponding to at least one flow path 122 The first passivation layer 140 may be provided (S130). Although not shown in detail, the first passivation layer 140 can be manufactured by a press process using a copper material or a metal plate made of stainless steel.

5, the first body 120 may include a second body 130 coupled to an upper end of the first body 120 after the first body 120 is manufactured (S120) S140). As described above, the second body part 130 may be made of a copper material or a stainless material.

5, the first body 120 and the second body 130 may be fabricated in a similar manner to the first body 120 and the second body 130, Are sequentially performed. However, the steps may be performed in the order of mutually changing, or substantially simultaneously.

5, after manufacturing at least one heat generating portion 110, a first body portion 120, a second body portion 130 and a first passivation layer 140 (S110 to S140) The protection layer 140 may be coupled to the upper end of the first body 120 and the lower end of the second body 130 may be coupled to the upper end of the first body 120 in operation S160. .

4, the first protective layer 140 may be coupled to the upper end of the first body part 120 by an adhesive (not shown) or the like so as to be in close contact with the at least one flow path 122. Accordingly, the first passivation layer 140 protects the at least one passage 122 to prevent corrosion by water or heat.

6 is a flowchart showing another example of a method for manufacturing a heater for continuous hot water heating according to the first embodiment of the present invention.

6 is different from the method of manufacturing a heater for continuous hot water heating shown in FIG. 5, in which the first body part 120 is formed such that the first protective layer 140 is separated from the at least one flow path In a state in which it is disposed at a position corresponding to the position P of the aluminum material, by a double injection process using a metal made of aluminum.

6, a heat generating portion is manufactured (S210), a first protective layer 140 having a shape corresponding to at least one flow path 122, P to be formed in the first body portion 120, (S220)

In a state where the first protective layer 140 is disposed at a position corresponding to at least one flow path P, a receiving space 121 in which at least one heat generating portion 110 is disposed is formed, The first body 120 may include at least one first flow path 122 at step S230. Preferably, the first body portion 120 may be manufactured by a double injection process such as an insert injection process using an aluminum metal.

Finally, the lower end of the second body part 130 may be coupled to the upper end of the first body part 120 (S240).

Meanwhile, the heater 100 for continuous hot water heating according to the first embodiment of the present invention is disposed between the first body part 120 and the second body part 130, and is made of a copper material or a metal plate made of stainless steel And a second protective layer 150 formed on the second protective layer 150.

7 is a longitudinal sectional view showing a state in which the heater for continuous hot water heating according to the first embodiment of the present invention further includes a second protective layer.

7, the second passivation layer 150 may be formed of copper or stainless steel, which is resistant to corrosion by water or heat, and may be bonded to the lower end of the second body part 130. As shown in FIG. In the case where the second protective layer 150 is further included as described above, even when the second body portion 130 is not made of a copper material or a stainless material (for example, when it is made of an aluminum material) It is possible to prevent the at least one flow path P from being corroded by water or heat together with the protective layer 140.

Hereinafter, the structure and manufacturing method of the heater for continuous hot water heating according to the second embodiment of the present invention will be described in detail with reference to FIGS. 8 to 12. FIG. For convenience of description, the same structure and manufacturing method as those of the first embodiment shown in Figs. 1 to 7 will not be described, and only differences will be described below.

FIG. 8 is a perspective view schematically showing a structure of a heater for continuous hot water heating according to a second embodiment of the present invention, FIG. 9 is a perspective view schematically showing a structure of a heater for continuous hot water heating according to a second embodiment of the present invention 10 is a longitudinal sectional view schematically showing the structure of a heater for continuous hot water heating according to a second embodiment of the present invention.

8 to 10, the heater 200 for continuous hot water heating according to the second embodiment of the present invention includes at least one heat generating portion 210, a first body portion 220, A first protective layer 240, and a second protective layer 250. The first protective layer 240 and the second protective layer 250 may be formed of the same material.

The heater 200 for continuous hot water heating according to the second embodiment of the present invention shown in Figs. 8 to 10 is a heater for continuous hot water heating according to the first embodiment of the present invention shown in Figs. 1 to 7 The at least one flow path P may include at least one first flow path 222 formed in the first body portion 220 and at least one second flow path 231 formed in the second body portion 230, As shown in FIG.

The first body part 220 may have a receiving space 221 in which at least one heat generating part 210 is disposed and at least one first flow path 222 may be formed at an upper end thereof. The second body part 230 is coupled to the upper end of the first body part 220 and includes at least one second flow path 231 having a shape corresponding to at least one first flow path 222 at the lower end thereof . As shown in FIG. 9, the at least one first flow path 222 and the at least one second flow path 231 may be formed in a zigzag shape with a substantially semicircular cross section.

At this time, the first body part 220 and the second body part 230 can be manufactured using an aluminum-made metal, each of which is relatively inexpensive. As will be described later, the first body part 220 and the second body part 230 can be manufactured by a die casting process using an aluminum metal or a double injection process, respectively.

10, the at least one first flow path 222 and the at least one second flow path 231 are formed so that the first body part 220 and the second body part 230 are vertically coupled to each other, It is possible to form at least one flow path P having a circular cross section and flowing water introduced from the outside. 10 shows an example in which one first flow path 222 and one second flow path 231 are formed in a zigzag shape. However, the shapes, the number, and the shapes of the first flow path 222 and the second flow path 231 And the like can be arbitrarily changed by those skilled in the art.

9, the first passivation layer 240 is coupled to the upper end of the first body portion 220 and has a shape 241 corresponding to at least one first flow passage 222, The first flow path 222 and the second flow path 222, respectively. The second protection layer 250 is coupled to the lower end of the second body portion 230 and has a shape 251 corresponding to at least one second flow path 231. The second protection layer 250 includes at least one second flow path 231, As shown in Fig.

2 and 4, the first passivation layer 240 and the second passivation layer 250 have a substantially thin plate shape. Preferably, the first passivation layer 240 and the second passivation layer 250 are made of a copper material resistant to corrosion by water or heat, And a metal plate made of a material. The first passivation layer 240 and the second passivation layer 250 may be manufactured by a press process using a copper material or a stainless steel metal, respectively.

As described above, the heater 200 for continuous hot water heating according to the second embodiment of the present invention is provided with the protective layer which is attached to the body portion and is in close contact with the flow path P through which water is introduced from the outside, Corrosion of the flow path P can be prevented and durability of the body part can be improved.

Hereinafter, a method of manufacturing the heater 200 for continuous hot water heating according to the second embodiment of the present invention will be described in detail with reference to FIGS. 11 and 12. FIG.

11 is a flowchart showing an example of a method of manufacturing a heater for continuous hot water heating according to the second embodiment of the present invention.

As shown in FIG. 11, in order to manufacture the heater 200 for continuous hot water heating, at least one heat generating portion 210 that is heated by an external current to generate heat may be provided (S410 ).

The first body 220 may include a housing space 221 in which at least one heat generating unit 210 is disposed and at least one first flow path 222 is formed at an upper end thereof S420). At this time, the first body 220 can be manufactured by a die casting process using metal made of aluminum in a state where at least one heat generating portion 210 is disposed in the receiving space 221 have. As described above, when the die casting process is used, since the product dimensions are accurate, there is an advantage that post-processing is hardly required, the mechanical properties are excellent, and mass production is possible.

 At least one second flow path 231 having a shape corresponding to at least one first flow path 222 is formed at a lower end of the first body part 220 coupled to the first body part 220 The second body portion 230 may be formed on the second body portion 230 (S430). Like the first body part 220, the second body part 230 can be manufactured by a die casting process using an aluminum metal.

(S410, S420, and S430), the first body portion 220 and the second body portion 230 may be manufactured by forming at least one heat generating portion 210, a first body portion 220, and a second body portion 230, And a shape corresponding to the at least one second flow path 231 coupled to the lower end of the second body portion 230 and having a shape corresponding to the first flow path 222 of the second body portion 230. [ And a second protective layer 250 having a first protective layer 251 (S440). Although not shown in detail, the first protective layer 240 and the second protective layer 250 may be manufactured by a press process using a copper material or a stainless steel metal plate, respectively.

11, steps S410, S420, and S430 of fabricating the first and second body portions 220 and 230, forming the first and second protective layers 240 and 240, (S440) of fabricating the first protective layer 250 and the second protective layer 250 are sequentially performed. However, each step may be performed in reverse order or substantially simultaneously.

After manufacturing the at least one heat generating portion 210, the first body portion 220, the second body portion 230, the first passivation layer 240 and the second passivation layer 250 (S410 to S450) The first passivation layer 240 may be coupled to the upper end of the first body 220 and the second passivation layer 250 may be coupled to the lower end of the second body 230 at step S450.

The first passivation layer 240 and the second passivation layer 250 are formed on at least one first flow path 222 and at least one second flow path 231 with an adhesive To the upper end of the first body part 220 and to the lower end of the second body part 230. The first passivation layer 240 and the second passivation layer 250 can protect the at least one first passage 222 and the at least one second passage 231 to prevent corrosion by water or heat .

Finally, the lower end of the second body part 230 may be coupled to the upper end of the first body part 220 (S460). 10, when the lower end of the second body part 230 is coupled to the upper end of the first body part 220, at least one first flow path 222 and at least one second flow path 231 ) Can form at least one flow path (P) through which water flowing from the outside flows, having a circular cross section by overlapping.

12 is a flowchart showing another example of the method for manufacturing a heater for continuous hot water heating according to the second embodiment of the present invention.

The method for manufacturing a heater for continuous hot water heating shown in FIG. 12 is different from the method for manufacturing a heater for continuous hot water heating shown in FIG. 11, in which the first protective layer 240 and the second protective layer 250 are manufactured first The first body part 220 and the second body part 230 can be manufactured in a state that the first body part 220 and the second body part 230 are disposed.

As shown in FIG. 12, after at least one heat generating part 210 which is heated by an electric current applied from the outside to generate heat is provided (S310), at least one heat generating part 210 to be formed later in the first body part 220 And a shape 251 corresponding to at least one second flow path 231 to be formed in the second body part 230. The first protection layer 240 has a shape 241 corresponding to the first flow path 222 of the second body part 230, (Step S320). The second protective layer 250 may be formed on the second protective layer 250. Referring to FIG. As described above, the first passivation layer 240 and the second passivation layer 250 can be manufactured by a press process using a copper material or a stainless steel metal plate, respectively.

After the first protective layer 240 and the second protective layer 250 are fabricated in S310 and S320, the first protective layer 240 is disposed at a predetermined position, and at least one heat generating portion And a first body 220 having at least one first flow path 222 formed at an upper end thereof in step S330. The second body part 230 having at least one second flow path 231 formed at the lower end thereof coupled with the first body part 220 in a state where the second protection layer 250 is disposed at a predetermined position, (S340).

The first and second body portions 220 and 230 may be formed of an aluminum material such that the first protective layer 240 and the second protective layer 250 are disposed at predetermined positions, Can be produced by a double injection process using a metal.

That is, in a state where the at least one heat generating portion 210 and the first passivation layer 240 are manufactured and disposed at a predetermined position, the first body portion 220 may be formed by using an aluminum material, Can be produced by the same dual injection process. Similarly, after the second protective layer 250 is manufactured, the second body part 230 may be manufactured by a double injection process such as an insert injection process using a metal of aluminum have.

Finally, the lower end of the second body part 230 is coupled to the upper end of the first body part 220, so that at least one flow path P through which water flows from the outside can be formed (S350).

As described above, in the case of the continuous hot water heating heater 100, 200 according to the embodiments of the present invention, the flow path 121, which is coupled to the body portions 120, 130, 220, 221, and 222 formed on the body portions 120, 130, 220, and 230 are prevented from being corroded by providing the protective layers 140, 150, 240, The durability of the first, second, third, and fourth embodiments 120, 130, 220, and 230 can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And is not intended to limit the scope of the invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

Description of the Related Art
100: Continuous hot water heater
110: heating part 111: body
112: connection terminal 120: first body part
121: accommodation space 122: first flow path
130: second body part 140: first protection layer
150: second protective layer
200: Continuous hot water heater
210: heat generating portion 211: body
212: connection terminal 220: first body portion
221: accommodation space 222: first flow path
230: second body part 231: second flow path
240: first protective layer 250: second protective layer

Claims (10)

At least one heat generating portion heated by a current applied from the outside to generate heat;
A first body portion having a receiving space in which the at least one heat generating portion is disposed and having at least one flow path through which water flowing from the outside flows;
A first protective layer having a shape corresponding to the at least one flow path and closely contacting the at least one flow path;
A second body coupled to an upper end of the first passivation layer; And
And a second protective layer disposed between the first protective layer and the second body portion and made of a copper material or a stainless steel metal sheet,
The first protective layer may be formed,
Characterized in that the heater is manufactured by a press process using a copper material or a metal plate made of stainless steel. delete The method according to claim 1,
The first body portion may include:
Characterized in that the heater is manufactured by a die casting process using an aluminum-made metal. The method according to claim 1,
The first body portion may include:
Characterized in that the heater is manufactured by a double injection process using a metal made of aluminum in a state where the first protective layer is disposed at a position corresponding to the at least one flow path. The method according to claim 1,
The second body portion
Characterized in that the heater is made of a copper material or a stainless steel material. delete At least one heat generating portion heated by a current applied from the outside to generate heat;
A first body part having a receiving space in which the at least one heat generating part is disposed and having at least one first flow path formed at an upper end thereof;
At least one second flow path having a shape corresponding to the at least one first flow path is formed at a lower end thereof;
A first protection layer coupled to an upper end of the first body portion and having a shape corresponding to the at least one first flow path and being in close contact with the at least one first flow path; And
And a second protective layer coupled to a lower end of the second body portion and having a shape corresponding to the at least one second flow path and being in close contact with the at least one second flow path,
Wherein at least one flow path through which water introduced from the outside flows when the at least one first flow path and the at least one second flow path are coupled up and down is formed. 8. The method of claim 7,
Wherein the first protective layer and the second protective layer are formed on the substrate,
Characterized in that the heater is manufactured by a press process using a copper material or a metal plate made of stainless steel. 9. The method of claim 8,
The first body portion and the second body portion each include a first body portion,
Characterized in that the heater is manufactured by a die casting process using an aluminum-made metal. 9. The method of claim 8,
The first body portion and the second body portion each include a first body portion,
Wherein the first protective layer and the second protective layer are disposed at positions corresponding to the at least one first flow path and the at least one second flow path, respectively, by a double injection process using an aluminum metal material And a heater for heating the continuous hot water.

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