JP2011158162A - Ih water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IH water heater which mainly uses sunlight, and secondarily uses IH (high frequency induction heating). <P>SOLUTION: The IH water heater includes a hot water supply container 1 filled with a heat transfer liquid medium in an interior, an integrally formed cylindrical recessed container part 2 recessed toward a container inner side at a lower part sidewall of the hot water supply container 1 and made of a magnetic material, a cylindrical high frequency electromagnetic induction coil 3 inserted into the cylindrical recessed container part 2 from an outer side, a heat exchanger 4 annularly arranged in a hot water storage tank and built-in so as to meander from the lower part to the upper part of the hot water supply container 1, and a solar collector 5 connected so as to circulate the heat transfer liquid medium to the upper part and the lower part of the hot water supply container 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to an IH water heater that supplies hot water to a kitchen, a washroom, a bathtub, and the like and supplies hot water to a hot water tank that has a function of reheating the bathtub.

2. Description of the Related Art Conventionally, an electric water heater having a low running cost that is heated by a high-frequency electromagnetic induction heating device using both midnight power and daytime power is known (see Patent Document 1).
In this known technique, a heat exchanger made of a magnetic material is arranged at the outer lower part of a container, the upper part of the heat exchanger and the upper part of the container are connected by an upper tubular body, and the lower part of the heat exchanger and the lower part of the container are provided with an electric on-off valve. As a configuration in which a tube is connected, a middle portion of the container is connected between the electric on-off valve and the heat exchanger with a middle tube, and the heat exchanger is directly heated by a heating method using a high frequency electromagnetic induction coil. Is an electric water heater that uses low-powered midnight power to boil a large amount of hot water, and can also use daytime power so that hot water can be obtained at any time.

Moreover, the electric water heater which heats with a high frequency induction heating apparatus and cooks a bathtub is known (refer patent document 2).
In this known technique, a heat exchanger made of a magnetic material having a first water channel on the container side and a second water channel on the bathtub side is arranged in the outer lower part of the container, and the upper part of the first water channel and the upper part of the container are connected by an upper tubular body. The lower part of the first water channel and the lower part of the container are connected by a lower pipe body having an electric on-off valve, the middle position of the container is connected by an intermediate pipe body between the electric on-off valve and the first water channel, Connected to the bathtub through the circulation pump of the bathtub lower pipe, the upper part of the second water channel and the bathtub are connected by the bathtub upper pipe, and the heat exchanger is heated directly from the first water channel side by the heating method using the high frequency electromagnetic induction coil. As a structure having a cooking function, the heating energy is an electric water heater that is heated using cheap late-night power when boiling a large amount of hot water, and can also be used with daytime power so that hot water can be obtained at any time.

  All of these known technologies (see Patent Documents 1 and 2) all use electricity of late-night power and daytime power, and are electric water heaters with little effect of reducing CO2 emissions.

Japanese Patent Laid-Open No. 5-272807 JP-A-5-272801

  An object of the present invention is to provide an IH water heater that mainly uses sunlight and supplementarily uses IH (high frequency electromagnetic induction heating).

The IH water heater of the present invention includes a hot water container filled with a heat transfer liquid medium therein, an integrally formed cylindrical concave portion made of a magnetic material, recessed inwardly on the lower side wall of the hot water container, A cylindrical high-frequency electromagnetic induction coil inserted from the outside into the cylindrical recess and a pipe that circulates the hot water in the hot water tank, and is built in a meandering manner from the bottom to the top of the hot water container. And a solar heat collector connected to the upper and lower portions of the hot water supply vessel and connected to the heat transfer liquid medium so as to be circulated.
The high frequency electromagnetic induction coil is formed in a cylindrical shape by spirally winding a linear coil on the outside of a cylindrical holding body having upper and lower openings, and is inserted from the outside into the cylindrical concave portion of the hot water supply container. The

The IH water heater of the present invention includes a hot water container filled with a heat transfer liquid medium therein, an integrally formed cylindrical concave portion made of a magnetic material, recessed inwardly on the lower side wall of the hot water container, A cylindrical high-frequency electromagnetic induction coil inserted from the outside into the cylindrical recess and a pipe that circulates the hot water in the hot water tank, and is built in a meandering manner from the bottom to the top of the hot water container. And a solar heat collector connected to the upper and lower portions of the hot water supply container and connected to the heat transfer liquid medium so that the heat transfer liquid medium can be circulated. Heating with electric power and using a solar collector in the daytime to obtain hot water at any time, the energy saving effect and the CO2 emission reduction effect are great.
In addition, the IH water heater of the present invention has a long life and a long service life because the high-frequency electromagnetic induction coil is inserted from the outside into the cylindrical recess of the hot water container and the heat generating part does not contact the liquid. The energy saving effect is great.

It is a schematic sectional drawing which shows the IH water heater of this invention. It is a schematic block diagram which shows the hot water supply system which uses the IH water heater of this invention.

One embodiment of the IH water heater of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, the IH water heater of the present invention is an integrally formed of a hot water container 1 filled with a heat transfer liquid medium and a magnetic material that is recessed on the inner side of the lower wall of the hot water container 1. The hot water container 1 is piped so as to circulate the hot water in the hot water storage tank, the cylindrical high-frequency electromagnetic induction coil 3 inserted into the cylindrical concave portion 2 from the outside, and the cylindrical high-frequency electromagnetic induction coil 3 inserted from the outside. A heat exchanger 4 built in a meandering manner from the lower part to the upper part, and a solar heat collector 5 connected to the upper and lower parts of the hot water supply vessel 1 so that a heat transfer liquid medium can be circulated. Is done.

The hot water supply container 1 is a sealed cylindrical container filled with a heat transfer liquid medium made of antifreeze or the like.
The cylindrical recessed portion 2 is recessed from the lower side wall of the hot water supply vessel 1 toward the inside of the vessel, and is made of a magnetic material that is excited by electromagnetic induction from the high frequency electromagnetic induction coil 3 to generate eddy current and is heated. And is integrally formed by being inserted from the outside into a circular hole formed in the side wall of the hot water supply container 1. Therefore, a cylindrical recess container is formed on the appearance of the hot water supply container 1.

  The high frequency electromagnetic induction coil 3 has a cylindrical shape in which a linear coil 7 is spirally wound outside a cylindrical holding body 6 having an upper and lower opening as shown in a partially enlarged view of a circled portion A in FIG. It is formed and inserted into the cylindrical recess 2 of the hot water supply container 1 from the outside. An electrical insulating member is disposed in the gap between the cylindrical recess 2 and the high-frequency electromagnetic induction coil 3.

  The heat exchanger 4 is piped so as to circulate hot water in a hot water storage tank (not shown), and a heat exchange pipe 8 is formed in a vertical meandering shape inside the hot water supply container 1 and is piped from the lower part of the hot water tank to be electrically opened and closed. The heat exchange pipe 8 at the lower part of the heat exchanger 4 is connected to the upper part of the hot water storage tank 9 via the electric on-off valve 9. Accordingly, low temperature hot water from the hot water storage tank is introduced into the lower part of the heat exchanger 4 and heated by the meandering heat exchange pipe 8 so that high temperature hot water is circulated and supplied from the upper part of the heat exchanger 4 to the hot water storage tank.

  The solar heat collector 5 is connected to an upstream pipe 10 at the lower part of the hot water supply container 1 by an electric on-off valve 11 and a circulation pump 12 in order to supply a low-temperature heat transfer liquid medium from the hot water supply container 1 to collect heat. The temperature of the pipe 13 is increased by solar energy, and the hot water transfer liquid medium is connected to the upper part of the hot water supply container 1 from the solar heat collector 5 to the downstream pipe 14 via the electric on-off valve 11. Circulate to

Next, the operation of the IH water heater of the present invention will be described below based on the attached drawings.
As shown in the schematic configuration diagram of the hot water supply system using the IH water heater of the present invention in FIG. 2, the hot water storage tank 15 is heated by an IH water heater using IH (high frequency electromagnetic induction heating) using midnight power. A certain amount of hot water is stored. The hot water stored in the hot water tank 15 is a hot water layer 16, a mixed layer 17, and an aqueous layer 18 from above.
Now, when hot water is used in the kitchen faucet 20 at the tip of the hot water supply pipe 19, the bathroom faucet 21, the bathroom faucet 22, and the shower 23, the same amount of hot water as used is passed through the water supply pipe 24 and the hot water tank 15. At this time, cold water is supplied by pushing up hot water from below, and cold water is stored in the water layer 18 without causing convection with hot water because of its high specific gravity. When the water level of the water layer 18 rises, a temperature sensor (not shown) detects the rise of the water level and is energized to the high frequency electromagnetic induction coil 3 by the control device, and is excited by electromagnetic induction from the high frequency electromagnetic induction coil 3 to cause eddy current. And the cylindrical recess 2 is heated.

  When the cylindrical recess 2 shown in FIG. 1 is heated, the heat transfer liquid medium filled in the hot water supply container 1 is heated to a high temperature, and the heat exchange pipe 8 of the heat exchanger 4 is heated. When the temperature sensor is activated, the electric open / close valves 27 of the lower pipe 25 and the upper pipe 26 are opened, and cold water is passed from the hot water storage tank 15 through the lower pipe 25 to the heat exchange pipe 8, and the heat exchange pipe 8 reaches a high temperature. The hot water is supplied from the upper pipe 26 to the hot water layer 16 above the hot water tank 15. This hot water circulation continues until the temperature sensor releases the detection, and a constant temperature and a hot water amount are always stored in the hot water storage tank 15.

In addition, in the case of additional cooking of the bathtub 28, when the temperature of the bathtub 28 decreases and a temperature sensor (not shown) near the suction port is activated, the circulation pump 30 of the circulation pipe 29 is activated, Hot water is sucked in from the lower part, the heat exchanger 31 of the circulation pipe 29 arranged in the hot water storage tank 15 is heated to heat the hot water, and hot hot water is supplied from the upper part of the bathtub 28. When the suction temperature rises, the circulation pump 30 stops and the cooking of the bathtub 28 is finished.
When the temperature of the hot water tank 15 is thereby lowered, the mixed layer 17 rises and a temperature sensor (not shown) works to open the electric open / close valve 27 of the lower pipe 25 and the upper pipe 26 as described above, and the hot water tank 15. Cold water is passed through the heat exchange pipe 8 through the lower pipe 25, and hot water having a high temperature in the heat exchange pipe 8 is supplied from the upper pipe 26 to the hot water layer 16 above the hot water tank 15. This hot water circulation continues until the temperature sensor cancels the detection, and a constant temperature and amount of hot water are always stored in the hot water storage tank 15.

During the night, a certain amount of hot water heated by the IH water heater using midnight power is stored in the hot water storage tank 15, and Internet information such as weather forecast information and water supply water temperature for each region is taken into the PC (computer) and calculated. Then, the degree of utilization of the solar collector 5 of tomorrow is predicted, and the shortage is heated with the midnight power of the previous day.
During the daytime, the open / close valve 11 of the downstream pipe 14 and the upstream pipe 10 shown in FIG. 1 is opened, the circulation pump 12 is activated, and the low-temperature heat transfer liquid is supplied by the circulation pump 12 via the upstream pipe 10 from the hot water supply container 1. The medium is supplied to the solar heat collector 5, the temperature is increased by solar energy in the heat collecting pipe 13, and the solar heat collector 5 is connected to the downstream pipe 14 via the electric on-off valve 11 and above the hot water supply container 1. The hot water transfer medium is connected and circulated and supplied to the hot water supply container 1 to keep the hot water supply container 1 at a high temperature.

DESCRIPTION OF SYMBOLS 1 Hot water supply container 2 Cylindrical recessed part 3 High frequency electromagnetic induction coil 4 Heat exchanger 5 Solar collector 6 Holder 7 Linear coil 8 Heat exchange pipe 9 Electric on-off valve 10 Upstream piping 11 Electric on-off valve 12 Circulation pump 13 Heat collecting pipe 14 Downstream pipe 15 Hot water tank 16 Hot water layer 17 Mixed layer 18 Water layer 19 Hot water pipe 20 Kitchen faucet 21 Washing faucet 22 Bathroom faucet 23 Shower 24 Water supply pipe 25 Lower pipe 26 Upper pipe 27 Electric on-off valve 28 Bathtub 29 Circulation Pipe 30 Circulation pump 31 Heat exchanger

Claims (2)

  A hot water supply container filled with a heat transfer liquid medium therein, an integrally formed cylindrical concave part made of a magnetic material, recessed inwardly on the lower side wall of the hot water supply container, and in the cylindrical concave part A cylindrical high-frequency electromagnetic induction coil inserted from the outside, a heat exchanger that is piped to circulate hot water in a hot water tank, and is built in a meandering manner from the lower part to the upper part of the hot water container, and further, An IH hot water heater comprising: a solar heat collector piped to the upper and lower portions of a hot water supply container and connected to be able to circulate a heat transfer liquid medium.   The high frequency electromagnetic induction coil is formed in a cylindrical shape by spirally winding a linear coil on the outside of a cylindrical holding body having upper and lower openings, and is inserted from the outside into the cylindrical concave portion of the hot water supply container. The IH water heater according to claim 1.

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