WO2020145454A1

WO2020145454A1 - Storage water heater having instantaneous heating function

Info

Publication number: WO2020145454A1
Application number: PCT/KR2019/004691
Authority: WO
Inventors: 최성환
Original assignee: 주식회사 귀뚜라미
Priority date: 2019-01-08
Filing date: 2019-04-18
Publication date: 2020-07-16
Also published as: KR20200086073A; KR102144341B1

Abstract

The present invention relates to a storage water heater having an instantaneous heating function, which enables a user to quickly use sufficiently heated hot water. The storage water heater comprises: a water tank; a heat exchange pipe provided inside the water tank and having a lower pipe and an upper pipe; and an upper heater disposed at the top within the water tank so as to heat water around the upper pipe.

Description

Storage water heater with instantaneous heating function

The present invention relates to a storage-type water heater having an instantaneous heating function, and more particularly, to a storage-type water heater having an instantaneous heating function to enable rapid use of sufficiently heated hot water.

In general, a water heater is used in the home or office to supply hot water for showering and washing. Water heaters are classified into storage water heaters that always store a certain amount of water in a storage tank and use gas or electricity as a heat source, and instantaneous water heaters that instantly heat water without a separate storage tank.

Since the storage water heater needs to always store a certain amount of water in the storage tank for hot water supply, and it must continuously heat the stored water for a set temperature, energy such as electricity and gas for this is continuously consumed. Instantaneous water heaters are used in places where relatively large amounts of hot water are required, such as shower facilities, or where large amounts of hot water are required, excluding shower facilities, energy such as gas or electricity is consumed instantaneously in proportion to the required hot water.

1 is a view illustrating a conventional water heater. Referring to FIG. 1, the conventional water heater is a water tank 10 containing hot water therein, and is inserted inside the water tank 10, and a raw water inlet 21 is formed at the top and a raw water outlet 22 at the bottom. A raw water pipe 20 in the form of a coil, a cover 30 closing the open lower side of the water tank 10 and a heater installed inside the water tank 10 across the cover 30 ( 40). The tank 10 is formed to be closed in the upper side and open in the lower side to accommodate hot water. Then, the raw water flowing along the raw water pipe 20 undergoes primary heat exchange with hot water inside the water tank 10 heated by the heater 40. Further, the raw water flowing along the raw water pipe 20 undergoes secondary heat exchange with the heater.

On the other hand, when water is heated, the heated water becomes lighter and rises upward, while relatively cold water descends downward. Hot water filled in the water tank 10 is also hot water heated by the heater 40 due to this convection phenomenon is located on the upper side of the water tank 10, and relatively cold hot water is located on the lower side of the water tank 10. do. However, since the raw water outlet 22 of the raw water pipe 20 is located under the water tank 10, the raw water immediately before going out through the raw water outlet 22 among the raw water flowing along the raw water pipe 20 is a water tank. Since heat exchange is performed with relatively cold hot water located on the lower side of (10), the heat exchange efficiency is lowered, and the temperature of the hot water is also lowered.

An object of the present invention to solve the problems of the prior art as described above is to provide a storage-type water heater having an instantaneous heating function to enable rapid use of sufficiently heated hot water.

In order to achieve the above object, the present invention is a water tank having a space portion to accommodate water therein; The lower pipe located inside the water tank, the upper pipe located inside the water tank, and a connecting portion connecting the lower pipe and the upper pipe, and one side connected to the lower side of the lower pipe and other The side is exposed to the outside of the water tank and an inlet for supplying water flowing in from the outside toward the lower pipe, one side is connected to the upper side of the upper pipe, and the other side is exposed to the outside of the water tank and along the upper pipe. A heat exchange tube having an outlet portion that discharges the moving water to the outside; And an upper heater positioned above the inside of the water tank to heat water outside the upper tube.

In addition, the upper heater is located in the lower portion of the upper pipe, the hot water heated by the upper heater among the water in the water tank has an instantaneous heating function, characterized in that rising in the direction of the upper pipe by convection phenomenon A storage water heater is provided.

In addition, the lower heater located in the lower portion of the lower tube; A temperature sensor installed above the inside of the water tank to measure the temperature of the water located above the inside of the water tank; And a control unit for receiving temperature information of water located on the upper side of the water tank from the temperature sensor and controlling on/off of the upper heater and the lower heater. Provides

In addition, when the hot water temperature measured from the temperature sensor is higher than a preset temperature while the upper heater is turned on and the lower heater is turned off, the control unit controls to turn off the upper heater and turn on the lower heater. It provides a storage water heater having an instantaneous heating function, characterized in that.

In addition, the water tank, a storage type having an instantaneous heating function, characterized in that it includes a body provided with the space therein, an upper cover covering the upper side of the body, and a lower cover covering the lower side of the body. Provide a water heater.

In addition, the inlet portion and the outlet portion are respectively extended to face the one side and the other side of the upper cover, one side is connected to the inlet portion and the other side is exposed to one side of the upper cover, but a direct connection portion is supplied directly from the outside And, one side is connected to the outlet and the other side is exposed to the other side of the upper cover, but the hot water outlet to discharge the hot water flowing out from the outlet to the outside, one side is connected to the direct connection and the other side is the hot water outlet A mixing member having a mixing valve connected to one side of the unit; A hot water sensor connected to the other side of the hot water outlet and detecting a hot water temperature of the hot water flowing out; And a control unit controlling the mixing valve so that the number of direct water supplied to the direct water connection unit is discharged to the hot water outlet when the temperature of the hot water sensed by the hot water sensor is higher than a preset temperature. A storage water heater is provided.

In addition, the main body includes an inner cylinder provided with the space portion therein, and an outer cylinder covering the outer periphery of the inner cylinder, wherein the inner cylinder is provided with a storage-type water heater having an instantaneous heating function, characterized in that it is formed of a plastic material. do.

In addition, there is provided a storage water heater having an instantaneous heating function, characterized in that a heat insulating material of an insulating material is interposed between the inner tube and the outer tube.

According to the present invention, when using hot water for the first time, the upper portion of the water tank can be locally heated by using an upper heater, so that hot water can be used in a short time.

In addition, when the temperature of the water located on the upper side of the water tank rises to some extent, the water heated by the lower heater is continuously supplied in the direction of the upper pipe, thereby increasing the temperature of the entire water tank as a whole, as well as passing through the upper pipe. It is effective to save power by keeping the temperature of the hot water discharged to the outlet at a constant temperature and turning off the upper heater.

In addition, when the temperature of the hot water discharged through the hot water outlet is higher than a preset temperature, the mixing valve is controlled to deliver a part of the water flowing into the direct water connection to the hot water outlet, so that the hot water flowing out of the hot water outlet may burn. There is an effect that can be controlled so that it is not too hot.

In addition, since the water tank can be formed of a plastic material, corrosion is prevented, and it is easy to transport and install due to a reduction in weight, and there is an effect of reducing manufacturing cost.

1 is a view illustrating a conventional water heater.

2 is a view schematically showing a storage-type water heater having an instantaneous heating function according to a preferred embodiment of the present invention.

3 is a view showing an exploded storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention.

4 is a view schematically showing a cross-section of a storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention.

5 is a view schematically showing a mixing member of a storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention.

6 is a block diagram showing a control means of a storage-type water heater having an instantaneous heating function according to a preferred embodiment of the present invention.

7 is a view schematically illustrating a process of controlling the on/off of the upper and lower heaters by a control unit of a storage-type water heater having an instantaneous heating function according to a preferred embodiment of the present invention.

1000: storage water heater with instantaneous heating function

100: water tank 110: main body

112: outer cylinder 114: inner cylinder

114a: space 115: cover

116: insulating material 120: upper cover

120a: first through hole 120b: second through hole

130: lower cover 200: heat exchange tube

202: lower pipe 203: inlet

204: upper pipe 205: outlet

206: connection portion 300: upper heater

310: lower heater 400: mixing member

410: direct water connection 420: hot water outlet

430: mixing valve 432: extension tube

500: control means 510: temperature sensor

520: control unit 530: upper heater driving unit

540: lower heater driving part 550: valve driving part

560: hot water sensor

Hereinafter, a storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

2 is a view schematically showing a storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention, and FIG. 3 is an exploded view of a storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention. 4 is a diagram schematically showing a cross-section of a storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention.

2 to 4, the storage water heater 1000 having an instantaneous heating function according to a preferred embodiment of the present invention includes a water tank 100, a heat exchange tube 200, and an upper heater 300, the lower part The heater 310, the mixing member 400 and the control means 500 may be further included.

The water tank 100 includes a main body 110 provided with an empty space portion 114a to accommodate water therein, an upper cover 120 covering the upper side of the main body 110, and a lower side of the main body 110. It includes a lower cover 130 to cover. Body 110 is composed of a double, inside The inner cylinder 114 is formed in a cylindrical shape to be provided with a space portion (114a), And an outer cylinder 112 that covers the outer periphery of the inner cylinder 114. The inner cylinder 114 may be formed, for example, in a circular column shape, and a space portion 114a of an empty space is formed therein, and water is filled in the space portion 114a. The lower side of the inner cylinder 114 is closed, and the upper side of the inner cylinder 114 is opened. And the upper side of the opened inner cylinder 114 is closed by the cover 115.

And the inner cylinder 114 and the outer cylinder 112 may be formed of a plastic material. In particular, since the inner cylinder 114 is formed of a plastic material, there is an effect of preventing corrosion. That is, since direct water is directly supplied into the hot water tank (not shown) and is configured to directly heat the water stored in the hot water tank, the existing hot water tank is made of a strong material such as iron to prevent damage. . In the present invention, since the direct water is supplied to the heat exchange tube 200 to be described later, there is no need to configure the inner cylinder 114 with a strong material, and the material can be changed to plastic. Therefore, conventionally, the conventional hot water tank is formed of metal, and there is a problem in that metal, such as lime and iron dissolved in water, corrodes the metal. Since it is formed of a plastic material, it has an effect of preventing corrosion. In addition, since the weight is reduced due to the material change, it is easy to transport and install, and there is an effect of reducing the manufacturing cost.

Meanwhile, a heat insulating material 116 formed of an insulating material such as polyurethane foam may be interposed between the inner cylinder 114 and the outer cylinder 112. The heat insulating material 116 is formed to surround the inner cylinder 114 so as to prevent the heat of water contained in the inner cylinder 114 from escaping to the outside.

The heat exchange tube 200 is located inside the inner cylinder 114, and includes a pair of tubes, that is, a lower tube 202 and an upper tube 204. The lower pipe 202 is formed so that the pipe is wound in a coil shape, but is located at the lower side inside the inner cylinder 114. The upper pipe 204 is formed so that the pipe is wound in a coil shape, but is located above the inner cylinder 114. The upper pipe 204 is positioned to be spaced apart from the upper portion of the lower pipe 202. Since the lower tube 202 and the upper tube 204 are each formed in a coil shape, a heat exchange area with water located in the inner cylinder 114 is widened, thereby increasing heat exchange efficiency.

In addition, the heat exchange pipe 200 has a connecting portion 206 interconnecting the upper side of the lower pipe 202 and the lower side of the upper pipe 204, and one side It is connected to the lower side of the lower pipe 202 and the other side The inlet part 203 which extends to be exposed to the upper side of the water tank 100 and supplies direct water flowing in from the outside in the direction of the lower tube 202, one side is connected to the upper side of the upper tube 204, and the other side is a water tank. It further extends to be exposed to the upper side of the (100) and further includes an outlet portion 205 that discharges water moving along the upper pipe 204 to the outside. The inlet portion 203 and the outlet portion 205 are formed to extend toward one side and the other side of the upper cover 120, respectively. As such, since the direct water from outside is moved along the heat exchange tube 200 rather than the water tank 100, there is an effect that scale does not occur due to direct water inflow around the heater.

The lower heater 310 is one side is mounted on the lower side of the inner cylinder 114 and the other side is extended in the lower direction inside the inner cylinder 114, the other side of the lower heater 310 is located in the lower portion of the lower tube 202 . The lower heater 310 and the upper heater 300, which will be described later, are configured to dissipate heat by, for example, electricity.

The upper heater 300 is one side is mounted on the upper side of the inner cylinder 114 and the other side is extended in the upper direction inside the inner cylinder 114, the other side of the upper heater 300 is the lower portion of the upper tube 204, in detail Is located between the upper pipe 204 and the lower pipe 202. Water heated by the upper heater 300 is continuously raised in the direction of the upper pipe 204 by the convection phenomenon, so that the water tank 100 located outside the upper pipe 204, that is, around the upper pipe 204 The water temperature rises locally within a short time.

The mixing member 400 will be described in FIG. 5 and the control means 500 will be described in FIG. 6.

5 is a view schematically showing a mixing member of a storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention, and FIG. 6 is a control means for a storage water heater having an instantaneous heating function according to a preferred embodiment of the present invention Is a block diagram.

3 to 6, the mixing member 400 includes a direct water connection portion 410, a hot water outlet portion 420 and a mixing valve 430. The direct connection part 410 is exposed to the outside through a first through-hole 120a through which one side penetrates one side of the cover 115 and is connected to the inlet portion 203 and the other side penetrates through one side of the upper cover 120. do. One side of the hot water outlet 420 passes through the other side of the cover 115 and is connected to the outlet 205, and the other side passes through the second through hole 120b formed through the other side of the upper cover 120 to the outside. Exposed. And direct water is supplied from the outside to the inlet 203 through the direct water connection part 410, and hot water formed in the heat exchange tube 200 is discharged to the outside through the hot water outlet part 420. One side of the mixing valve 430 The direct connection part 410 communicates with the other side. It is in communication with one side of the hot water outlet (420). At this time, an extension pipe 432 may be further provided on one side of the mixing valve 430 to be connected to one side of the hot water outlet 420.

The control means 500 includes a temperature sensor 510, a tapping sensor 560, a control unit 520, an upper heater driving unit 530, a lower heater driving unit 540 and a valve driving unit 550. The temperature sensor 510, the upper heater driving part 530, and the lower heater driving part 540 will be described in FIG. 7.

The hot water sensor 560 is connected to the other side of the hot water outlet 420 and detects the hot water outlet temperature of the hot water outlet 420. The hot water sensor 560 is a conventional configuration that detects the temperature of the hot water flowing out of the hot water outlet 420 and transmits it to the control unit 520.

The valve driving part 550 The mixing valve 430 is driven so that a part of the direct water supplied to the direct water connection part 410 is discharged to the hot water discharge part 420.

The control unit 520 receives the hot water discharge temperature information of the hot water flowing out of the hot water outlet 420 from the hot water sensor 560, and when the hot water temperature information of the received hot water is greater than or equal to a preset temperature, the valve to the valve driving unit 550 Control signals are transmitted. And the valve driving unit 550 The number of direct water supplied to the direct water connection part 410 The mixing valve 430 is driven to be discharged to the hot water outlet 420. Then, the mixing valve 430 transfers a part of the water flowing into the direct water connection unit 410 to the hot water outlet 420 under the control of the control unit 520, and the hot water flowing out of the hot water outlet 420 is burned. Control it so that it is not too hot. Thus, the present invention has an effect that allows the user to arbitrarily lower the temperature of the hot water by allowing the mixing valve 430 to mix water and hot water.

3, 6 and 7, the temperature sensor 510 is inside the water tank 100 to measure the temperature of the water located above the inside of the water tank 100 heated by the upper pipe 204. It is installed on the upper side. The upper heater driving unit 530 receives or receives a control signal from the control unit 520 to apply or block power to the upper heater 300 so that the upper heater 300 is on (ON) or off (OFF), and the lower heater driving unit ( 540 receives or receives a control signal from the control unit 520 to apply or block power to the lower heater 310 so that the lower heater 310 is turned on or off. The control unit 520 receives the temperature of the water from the temperature sensor 510 and controls on/off of the upper heater 300 and the lower heater 310. Hereinafter, a process in which the control unit 520 controls on/off of the upper heater 300 and the lower heater 310 will be described.

First, the control unit 520, as shown in Figure 7 (a), to turn on the upper heater 300 to heat the cold water inside the water tank 100, the lower heater 310 is turned off. As such, when only the upper heater 300 is turned on, water heated locally by the upper heater 300 due to convection is raised in the upper portion of the water tank 100, that is, in the direction of the upper pipe 204. At this time, the direct water flowing into the inlet portion 203 of the heat exchange pipe 200 through the direct water connecting portion 410 passes through the lower pipe 202 and the upper pipe 204 and flows out to the outlet portion 205, and the water tank ( 100) As the water around the upper pipe 204 located at the upper portion of the interior rises rapidly to about 76°C by the upper heater 300 within a short time, as shown in FIG. 7(b), the upper pipe in the lower pipe 202 The direct water supplied to 204 is also rapidly converted to hot water while flowing along the upper pipe 204, so there is an effect that hot water sufficiently hot can be used within a short time.

In addition, when the temperature of the water located on the upper portion of the water tank 100 measured from the temperature sensor 510 is a preset temperature, for example, 75° C. or higher, as shown in FIG. 7(c), The upper heater 300 is turned off, and the lower heater 310 is controlled to be turned on. Then, the temperature of the water located in the lower portion of the water tank 100 positioned around the lower heater 310 is raised, and the water with the increased temperature is moved to the upper part inside the water tank 100 by convection phenomenon. , In general, the temperature of the water in the water tank 100 is as shown in (d) of FIG. 7, the upper part of the water tank 100 is raised than the lower part. Then, the hot water flowing along the heat exchange tube 200 becomes the highest temperature when it passes through the upper tube 204 and is discharged to the outlet 205, thereby increasing the thermal efficiency of the heat exchange tube 200.

As described above, when the hot water is used for the first time, the upper portion of the water tank 100 can be locally heated using the upper heater 300, so that hot water can be used within a short period of time.

In addition, when the temperature of the water located in the upper side of the water tank 100 rises to some extent, the lower heater 310 that uses less power than the upper heater 300 is operated to be heated through the lower heater 310. By continuously supplying water to the upper pipe 204, it is possible to increase the overall temperature of the water in the entire water tank 100, and of the hot water discharged to the outlet 205 through the upper pipe 204. In addition to keeping the temperature constant, there is an effect of saving power.

Although the present invention has been described in detail in the above embodiments, it is obvious that the present invention is not limited thereto, and it is apparent to those skilled in the art that various modifications and modifications are possible within the technical scope of the present invention. If it falls within the scope of the claims, the technical idea should also be regarded as belonging to the present invention.

Claims

A water tank having a space portion to accommodate water therein;

The lower pipe located inside the water tank, the upper pipe located inside the water tank, and a connecting portion connecting the lower pipe and the upper pipe, and one side connected to the lower side of the lower pipe and other The side is exposed to the outside of the water tank and an inlet for supplying water flowing in from the outside toward the lower pipe, one side is connected to the upper side of the upper pipe, and the other side is exposed to the outside of the water tank and along the upper pipe. A heat exchange tube having an outlet portion that discharges the moving water to the outside; And

A storage water heater having an instantaneous heating function, characterized in that it includes an upper heater which is located above the water tank and heats water outside the upper tube.
According to claim 1,

The upper heater is located in the lower portion of the upper tube,

The hot water heated by the upper heater among the water in the water tank is raised in the direction of the upper pipe by the convection phenomenon Storage water heater having a heating function.
According to claim 2,

A lower heater located under the lower pipe;

A temperature sensor installed above the inside of the water tank to measure the temperature of the water located above the inside of the water tank; And

A storage type water heater having an instantaneous heating function, further comprising a control unit that receives temperature information of water located above the inside of the water tank and controls on/off of the upper heater and the lower heater from the temperature sensor.
The method of claim 3,

The control unit controls to turn off the upper heater and turn on the lower heater when the hot water temperature measured by the temperature sensor is higher than a preset temperature while the upper heater is turned on and the lower heater is turned off. Storage water heater with instantaneous heating function.
According to claim 1,

The water tank is a storage-type water heater having an instantaneous heating function, characterized in that it includes a main body provided with the space inside, an upper cover covering the upper side of the main body, and a lower cover covering the lower side of the main body.
The method of claim 5,

The inlet portion and the outlet portion are respectively extended to face one side and the other direction of the upper cover,

One side is connected to the inlet and the other side is exposed to one side of the upper cover, but a direct water connection portion is supplied with direct water from the outside, one side is connected to the outlet and the other side is exposed to the other side of the upper cover, but from the outlet A mixing member having a hot water outlet for discharging hot water flowing out, and a mixing valve on one side connected to the direct water connection and the other side connected to one side of the hot water outlet;

A hot water sensor connected to the other side of the hot water outlet and detecting a hot water temperature of the hot water flowing out; And

If the temperature of the hot water detected by the tapping sensor is greater than or equal to a preset temperature, a control unit for controlling the mixing valve so that the direct water supplied to the direct water connection unit is discharged to the hot water outlet is further provided. Storage water heater.
The method of claim 5,

The main body includes an inner cylinder provided with the space portion therein, and an outer cylinder covering an outer periphery of the inner cylinder, wherein the inner cylinder is formed of a plastic material, and the storage type water heater having an instantaneous heating function.
The method of claim 7,

A storage water heater having an instantaneous heating function, characterized in that an insulating material of a heat insulating material is interposed between the inner tube and the outer tube.