KR20110040523A - Apparatus for electronic hot-water supply and hot-water pipe manufacturing method - Google Patents

Abstract

PURPOSE: An electric hot-water supply apparatus and a hot water pipe manufacturing method are provided to maintain the section of bent portions of a hot water pipe using filler. CONSTITUTION: An electric hot-water supply apparatus comprises a heating member(110), a first hot water pipe(121), and a second hot water pipe(122). The heating member generates heat by electricity. As the first hot water pipe covers the heating member with keeping a regular interval from the outer circumference of the heating member, a water flow space(130a) is formed between the outer circumference of the heating member and the first hot water pipe. The first hot water pipe has a cold water inlet port(123). The second hot water pipe covers the outside of the first hot water pipe. A water flow space(130b) is formed between the second hot water pipe and the outer circumference of the first hot water pipe. The hot water heated by the heating member is discharged through an outlet port(124) of the second hot water pipe.

Description

Apparatus for electronic hot-water supply and hot-water pipe manufacturing method}

The present invention relates to an electric hot water supply device and a hot water pipe manufacturing method, and more particularly to an electric hot water supply device and a hot water pipe manufacturing method for supplying hot water by heating the water by the heating of the coil by the supply of electricity. .

In general, the electric hot water supply device is a device having a heating element for heating cold water in accordance with the supply of power, and can supply hot water heated by the heating element to a user.

1 is a schematic view showing a conventional electric hot water supply device.

Conventional electric hot water supply device, a water supply pipe (1) for supplying cold water to the heating tank (2) connected by the expansion tube (7 '), and cold water from the inside of the heating tank (2) in accordance with the supply of power The heating element (3) for directly heating the hot water pipe (5) for discharging the hot water heated by the heating element (3) through the hot water supply valve (4), and according to the flow rate of the cold water in the cold water pipe (1) When the power supply control unit 6 for controlling the supply of power to the heating element 3 and the hot water pipe 5 and the heating tank 2 are connected, and the internal pressure of the heating tank 2 increases. An expansion tube (7) for swelling to relieve pressure, an overheat prevention unit (8) for shutting off the power supplied to the heating element (3) if the temperature of the hot water heated by the heating element (3) is higher than a set temperature; Case (9) casing the heating tank (2), power supply control unit (6), expansion tube (7), overheat prevention unit (8) It is configured to include.

The heating tank 2 has a substantially box shape, a heating element 3 is installed therein, and cold water is accommodated in the inner space.

The heating element 3 is wound in a coil shape and heats cold water in contact with the heating element 3.

In this case, the heating tank 2 is formed in a box shape surrounding the outside of the heating element 3, so that the cold water inside the heating tank 2 is uniformly heated by the heating element 3.

That is, the cold water close to the heating element 3 of the cold water in the space inside the heating tank 2 is heated, but the cold water in the corner portion of the heating tank 2 (that is, the dead zone) is not heated, so the efficiency is high. There was a problem of falling and not supplying enough hot water desired by the user.

The present invention has been made to solve the above-described problem, by providing only an amount of cold water that can be sufficiently heated by the heating element provides an electric hot water supply device that can prevent the dead zone in which the cold water is not heated. The purpose is to.

Another object of the present invention is to provide a hot water pipe manufacturing method of the electric hot water supply device that can maintain the cross-sectional shape of the portion of the curvature when the heating element is inserted into the hot water pipe is inserted.

Electric hot water supply apparatus of the present invention for achieving the above object, the electric hot water supply device for supplying hot water by heating the water by the supply of electricity, the heat generating member (110,210,310) is generated by the electricity; With the outer peripheral surface of the heating member (110,210,310,610) along the longitudinal direction of the heating member (110,210,310,610) to form a predetermined space (130a, 230a, 330a, 630a) in which water flows between the outer peripheral surface of the heating member (110,210,310,610) A first hot water pipe (121, 221, 321, 621) formed to wrap while maintaining a constant gap and having inlets (123, 223, 323, 623) into which cold water is introduced; A predetermined space (130b, 230b, 330b, 630b) through which water flows between the outer circumferential surface of the first hot water pipe (121, 221, 321, 621) is wrapped around the outside of the first hot water pipe (121, 221, 321, 621), and the heat generating member (110, 210, 310, 610). And a second hot water pipe (122, 222, 322, 622) formed with outlets (124, 224, 324, 624) for discharging hot water heated by the).

Another type of electric hot water supply device of the present invention, the electric hot water supply device for supplying hot water by heating the water by the supply of electricity, the heating member 410 which generates heat by the electricity; The heating member 410 is inserted therein and is formed along the longitudinal direction of the heating member 410 to form predetermined spaces 430a and 430b through which water flows between the outer circumferential surface of the heating member 410. It is formed in a snail shape so as to surround the outer circumferential surface of the heat generating member 410 while maintaining a predetermined interval, and the inlet 423 for introducing cold water into the space 430a and the hot water heated by the heat generating member 410 are discharged. It includes a hot water pipe 420, the outlet 424 is formed.

The hot water pipe manufacturing method of the present invention comprises the steps of: a) inserting a linear heating member 510 in which heat is generated by the supply of electricity into the hot water pipe 520; b) filling the filler 511 made of particles having a predetermined size in a space between the outer circumferential surface of the heat generating member 510 and the inner circumferential surface of the hot water pipe 520; c) bending the heating member 510 and the hot water pipe 520 integrally.

Another hot water pipe manufacturing method of the present invention comprises the steps of: a) manufacturing a hot water pipe 321 through which hot water passes through an inner space in a coil shape; b) manufacturing a coil member having a diameter smaller than an inner diameter of the hot water pipe 321 to insert the heating member 310 in which heat is generated by the supply of electricity into the hot water pipe 321; c) inserting the inside of the hot water pipe 310 while rotating the heat generating member (310).

According to the present invention, by supplying only the amount of cold water that can be sufficiently heated by the heating element, there is an advantage that can prevent the dead zone in which the cold water is not heated to quickly supply hot water of the desired temperature.

In addition, when the heating element is inserted into the hot water pipe is manufactured, it is possible to maintain the cross-sectional shape of the portion where the curvature is changed by using the filler, and in this case, the filler is easily soluble by washing after bending by making the filler water-soluble. .

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

2 is a schematic cross-sectional view showing the electric hot water supply apparatus according to the first embodiment of the present invention.

Electric hot water supply apparatus according to the first embodiment of the present invention, the heating member 110 is generated by the supply of electricity, the heating member 110 is inserted into the hot water pipes 121, 122 of the dual structure, the An inlet 123 connected to one end of the first hot water pipe 121 and connected to the second hot water pipe 122 to discharge cold water heated by the heat generating member 110 is connected to the second hot water pipe 122. ).

The heating member 110, the heating wire 111 is generated by the supply of electricity, the insulator 112, the heating wire 111 and the insulator 112 formed in a powder form to surround the outside of the heating wire 111. It is made of a tube of stainless steel 113 to accommodate the inside. The insulator 112 may be magnesium in the form of a solidified powder. The tube 113 may be made of other metals such as copper and iron in addition to stainless steel.

The heat generating member 110 is coupled by welding at a portion 125 inserted into the first hot water pipe 121.

The second hot water pipe 122 is shaped to surround the outside of the first hot water pipe 121.

The first hot water pipe 121, the heat generating member 110 along the longitudinal direction of the heat generating member 110 to form a predetermined space (130a) flowing water between the outer peripheral surface of the heat generating member 110. It consists of the same shape as).

The cold water introduced through the inlet 123 is introduced into the inner space 130a of the first hot water pipe 121 to form a heat exchange between the heat generating member 110 and the hot water.

The heated hot water flows into the space 130b between the internal first hot water pipe 121 and the external second hot water pipe 122, and then is discharged through the discharge port 124 to be supplied to the hot water use place. .

In this case, the outlet 124 is formed at a position opposite to the outlet side of the first hot water pipe 121 (that is, a position adjacent to the inlet 123). If the outlet 124 is located at a position adjacent to the outlet side of the first hot water pipe 121, hot water discharged to the outlet side of the first hot water pipe 121 is immediately discharged through the outlet 124, Most of the hot water in the external space 130b of the second hot water pipe 122 may not be supplied to the hot water destination. In the case of the present invention, most of the hot water in the internal space 130b may be supplied to the hot water use place to improve efficiency.

A power line 114 is connected to an end portion of the heating element 111 of the heating member 110 to supply electricity to the heating element 111.

According to the above configuration, the cold water filled in the internal space 130a of the first hot water pipe 121 is quickly heated by heat exchange with the heat generating member 110, and the heat exchange between the heat generating member 110 and the cold water is sufficiently performed. Since the cold water of the corner portion of the heating tank 2 is not heated, as in the prior art, it is possible to prevent the problem of lowering efficiency.

Figure 3 (a), (b) is a plan view and a front sectional view showing an electric hot water supply apparatus according to a second embodiment of the present invention.

In the present embodiment, the heat generating member 210 and the first hot water pipe 221 show a case where the bending is performed in a U shape.

In the first embodiment, in which the heat generating member 110 and the first and second hot water pipes 121 and 122 are formed in a straight line, when the amount of hot water required by the user is large, the first hot water pipe 121 and the second hot water pipe 122 are used. ) Needs to be long, which can cause problems such as installation space.

Accordingly, when the heat generating member 210 and the first hot water pipe 221 are bent in a U shape, the heating member 210 and the first hot water pipe 221 can be installed in a small space with a sufficient length, so that even when the amount of hot water required is large.

In this case, the number of times the bending is performed in a U shape is one or more times and can be variously set according to the amount of hot water used and the installation space.

Meanwhile, in the present exemplary embodiment, the heat generating member 210 includes a second hot water pipe 222 which is inserted therein and forms a predetermined space 230b through which water flows between the heat generating member 210 and the outer circumferential surface of the heat generating member 210. have.

The second hot water pipe 222 has a substantially rectangular box shape, and the first hot water pipe 221 is provided therein.

The inlet 223 through which cold water is introduced is formed at one end of the first hot water pipe 221, and the outlet 224 through which hot water is discharged is adjacent to the inlet 223 (that is, the first hot water pipe 221). ) Is formed in the second hot water pipe 222 that is a diagonal corner position with respect to the end portion of the water inside.

Therefore, since the water heated in the internal space 230a of the first hot water pipe 221 flows through the internal space 230b of the second hot water pipe 222 and is discharged to the discharge port 224, the second hot water pipe 222 Most of the hot water inside can be supplied to the hot water use area, improving efficiency.

The detailed configuration of the heat generating member 210 is the same as in the first embodiment, and reference numeral 214 denotes a power line.

The electric hot water supply device of such a shape can be used as a heating device. In other words, if the square box of the second hot water pipe 222 is placed on the floor and the feet are placed on the wide area, the foot can be used as a foot heater.

Figure 4 (a), (b), (c) is a view showing a state in which the heating member and the hot water pipe is separated, assembled, coupled state in the electric hot water supply apparatus according to a third embodiment of the present invention, respectively .

The heating member 310 and the first hot water pipe 321 according to the present embodiment has a coil spring shape as shown in FIG.

After the heat generating member 310 and the first hot water pipe 321 are manufactured in a coil spring shape, respectively, as shown in FIG. 4B, the heat generating member 310 is formed at one end of the first hot water pipe 321. It is inserted into the first hot water pipe 321 while rotating through the 321a.

In this case, since the heating member 310 should be inserted into the first hot water pipe 321, the heating member 310 should have a diameter smaller than the inner diameter of the hot water pipe 321.

According to such a method, it is not necessary to fill the filler described later, thereby simplifying the manufacturing process.

An inlet 323 through which cold water flows is formed in an end portion 321a of the first hot water pipe 321 in a '-' shape.

The heating member 310 is formed inside the first hot water pipe 321 so that the heating member 310 and the power line 314 are exposed to the outside of the end portion 321 a of the first hot water pipe 321. After insertion, the end portion 321a of the first hot water pipe 321 is sealed to prevent the cold water flowing into the inlet 323 from leaking.

Referring to FIG. 4C, the first hot water pipe 321 into which the heat generating member 310 is inserted is provided in the second hot water pipe 322.

The second hot water pipe 322 is formed in a cylindrical shape, the lower side is formed with a discharge port 324 for discharging hot water.

The outlet 324 is formed at a position adjacent to the inlet 323 which is a position opposite to the outlet side of the first hot water pipe 321.

The configuration of the inside of the heat generating member 310 is the same as in the first embodiment.

The cold water introduced into the inlet 321 is heated by the heat generating member 310 in the inner space 330a of the first hot water pipe 321, and then into the inner space 330b of the second hot water pipe 322. Flowing through the outlet 324 is supplied to the hot water destination.

According to such a shape, it is possible to install hot water pipes 321 and 322 capable of supplying a large amount of hot water even in a small space.

5 (a) and 5 (b) are a plan view and a front sectional view showing an electric hot water supply device according to a fourth embodiment of the present invention.

The heat generating member 410 and the hot water pipe 420 according to the present embodiment have a shape wound in a snail shape so as to increase in diameter from a small diameter inside.

The external appearance of the hot water pipe 420 has a flat cylindrical shape in which the upper and lower surfaces are sealed. Inside the hot water pipe 420 is formed a snail-shaped space 430a flowing along the heat generating member 410, the cold water introduced through the inlet 423, is blocked by the space 430a and the partition wall A snail-shaped space 430b is formed such that water passing through the space 430a flows toward the outlet 424.

The inlet 423 and the outlet 424 are formed adjacent to each other.

The heat generating member 410 is inserted into and coupled to the hot water pipe 420 and a part of the end thereof is exposed to the outside of the hot water pipe 420 together with the heating wire 414.

According to such a hot water supply device, it is possible to install a hot water pipe 420 capable of supplying a large amount of hot water in a small space.

Hereinafter, the hot water pipe manufacturing method of the present invention will be described.

Figure 6 is a schematic cross-sectional view showing a hot water pipe manufacturing method according to an embodiment of the present invention.

First, a linear heating member 510 is inserted into a linear hot water pipe 520.

Thereafter, the filler 511 made of particles having a predetermined size is filled in a space between the outer circumferential surface of the heat generating member 510 and the inner circumferential surface of the hot water pipe 520.

When the filler 511 is filled, it is heated using a heat source around the filled portion, and then the heating member 510 and the hot water pipe 520 are integrally bent (vending).

If the bending without filling the filling material 511 (vending), the cross section of the circular hot water pipe 520 is deformed into an elliptical shape and the outer peripheral surface and the hot water pipe 520 of the heating member 510 which is a flow path for the hot water to pass. There is a problem that the space between the inner circumference of the narrow.

Accordingly, the cross section of the circular hot water pipe 520 is deformed into an oval shape when the bending material is bent by the filler 511 to prevent the flow path through which the hot water passes.

After the bending (vending), the filler 511 should be removed. If the filler 511 is made of water-soluble sodium chloride, the filler 511 can be easily washed off with water.

If the hot water pipe is manufactured in this way, the filling material can be easily removed while preventing the deformation of the hot water flow path, thereby improving productivity.

In addition to the water-soluble sodium chloride, the filler 511 may be one obtained by grinding sand to a predetermined particle size. When the sand is filled, the sand remaining inside the hot water pipe 520 may be removed by beating off after bending or washing with water.

Figure 7 (a), (b) is a view showing a hot water pipe manufacturing method according to another embodiment of the present invention.

Referring to Figure 7 (a), the heat generating member 610 and the first hot water pipe 621 is formed in a shape in which the diameter is expanded toward the outside from the center.

As shown in FIG. 7B, after the linear heat generating member 610 is inserted into the first hot water pipe 621, the inside of the first hot water pipe 621 is as shown in FIG. 6. After filling the filler, it is manufactured by bending.

Reference numeral 614 denotes a power line, 622 denotes a second hot water pipe, 623 denotes an inlet, 624 denotes an outlet, and 630a and 630b denote spaces.

1 is a schematic view showing a conventional electric hot water supply device,

Figure 2 is a schematic cross-sectional view showing an electric hot water supply apparatus according to a first embodiment of the present invention,

3 (a), (b) is a plan view and a front sectional view showing an electric hot water supply apparatus according to a second embodiment of the present invention,

Figure 4 (a), (b), (c) is a view showing a state in which the heating member and the hot water pipe is separated, assembled, coupled state in the electric hot water supply apparatus according to a third embodiment of the present invention, respectively;

Figure 5 (a), (b) is a plan view and a front sectional view showing an electric hot water supply apparatus according to a fourth embodiment of the present invention,

Figure 6 is a schematic cross-sectional view showing a hot water pipe manufacturing method according to an embodiment of the present invention,

Figure 7 (a), (b) is a view showing a hot water pipe manufacturing method according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110, 210, 310, 410, 510, 610: heat generating member 111: heating wire

112: insulator 113: tube

121,221,321,621: First hot water pipe 122,222,322,622: Second hot water pipe

123,223,323,423,623: Inlet 124,224,324,424,624: Outlet

130,230,330,430: Space 420,520,620: Hot water pipe

511: filling material

Claims (14)

In the electric hot water supply device for supplying hot water by heating water by the supply of electricity, Heat generating members 110, 210, 310, and 610 which generate heat by the electricity; With the outer peripheral surface of the heating member (110,210,310,610) along the longitudinal direction of the heating member (110,210,310,610) to form a predetermined space (130a, 230a, 330a, 630a) in which water flows between the outer peripheral surface of the heating member (110,210,310,610) A first hot water pipe (121, 221, 321, 621) formed to wrap while maintaining a constant gap and having inlets (123, 223, 323, 623) into which cold water is introduced; A predetermined space (130b, 230b, 330b, 630b) through which water flows between the outer circumferential surface of the first hot water pipe (121, 221, 321, 621) is wrapped around the outside of the first hot water pipe (121, 221, 321, 621), and the heat generating member (110, 210, 310, 610). Second hot water pipes 122, 222, 322 and 622 formed with outlets 124, 224, 324 and 624 for discharging hot water heated by Electric hot water supply device comprising a. The method of claim 1, The heating member 110 and the first, second hot water pipes (121, 122) is an electric hot water supply, characterized in that made of a straight shape. The method of claim 1, The heat generating member 210 and the first hot water pipe 221 are bent at least once in a U shape, and the second hot water pipe 222 is square so that the first hot water pipe 221 is installed therein. Electric hot water supply device characterized in that the box shape. The method of claim 1, The heating member 310 and the first hot water pipe 321 has a coil shape, the second hot water pipe 322 is an electric hot water, characterized in that the first hot water pipe 321 is installed in a cylindrical shape. Feeder. The method of claim 1, The heating member 610 and the first hot water pipe 621 is an electric hot water supply, characterized in that the shape is wound so as to expand the diameter from the center toward the outside. The method according to any one of claims 1 to 5, The outlet (124, 224, 324, 624) is an electric hot water supply, characterized in that formed in a position adjacent to the inlet (123, 223, 323, 623) which is a position opposite to the outlet side of the first hot water pipe (121, 221, 321, 621). In the electric hot water supply device for supplying hot water by heating water by the supply of electricity, A heat generating member 410 which generates heat by the electricity; The heating member 410 is inserted therein and is formed along the longitudinal direction of the heating member 410 to form predetermined spaces 430a and 430b through which water flows between the outer circumferential surface of the heating member 410. It is formed in a snail shape so as to surround the outer circumferential surface of the heat generating member 410 while maintaining a predetermined interval, and the inlet 423 for introducing cold water into the space 430a and the hot water heated by the heat generating member 410 are discharged. A hot water pipe 420 having an outlet 424 formed therein; Electric hot water supply device comprising a. The method of claim 7, wherein The outlet 424 is an electric hot water supply device, characterized in that formed in the adjacent position of the inlet (423). a) inserting a linear heating member 510 in which the heat is generated by the supply of electricity into the hot water pipe 520; b) filling the filler 511 made of particles having a predetermined size in a space between the outer circumferential surface of the heat generating member 510 and the inner circumferential surface of the hot water pipe 520; c) bending the heating member 510 and the hot water pipe 520 integrally; Hot water pipe manufacturing method of the electric hot water supply device comprising a. 10. The method of claim 9, The method of manufacturing a hot water pipe of the electric hot water supply device, characterized in that the heating step before bending the heat generating member (510) and the hot water pipe (520) integrally in step c). 11. The method according to claim 9 or 10, Filler 511 is filled in step b) is water-soluble; Method for producing a hot water pipe of the electric hot water supply device, characterized in that the heating member 510 and the hot water pipe 520 is bent and the filler 511 is washed with water. The method of claim 11, The filler 511 is a hot water pipe manufacturing method of the electric hot water supply device, characterized in that consisting of sodium chloride. 11. The method according to claim 9 or 10, Filling material 511 is filled in the step b) is a hot water pipe manufacturing method of the electric hot water supply device, characterized in that the sand made of a predetermined particle size. a) manufacturing a hot water pipe 321 through which the hot water passes through the inner space in a coil shape; b) manufacturing a coil member having a diameter smaller than an inner diameter of the hot water pipe 321 to insert the heating member 310 in which heat is generated by supply of electricity into the hot water pipe 321; c) inserting the inside of the hot water pipe 310 while rotating the heat generating member 310; Hot water pipe manufacturing method of the electric hot water supply device comprising a.

Images