JP3658818B2 - Water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water heater that heats tap water and supplies hot water at a desired temperature.
[0002]
[Prior art]
Conventionally, as a water heater, there are an instant water heater, a bath water heater, a boiler for central heating, etc. for home use. However, since these heat sources use gas or oil, supply gas or oil and Ancillary facilities such as piping and storage tanks for storage are necessary, and facilities for preventing oxygen deficiency and igniting due to leakage are also required. There is also an electric water heater that stores hot water by raising the temperature of hot water to a constant temperature using an electric heater as a heat source. In recent years, electric water heaters have been developed that store hot water at several stages of temperature.
[0003]
[Problems to be solved by the invention]
However, in the configuration of the above-described conventional electric water heater, since only the amount of hot water stored at a preset temperature can be used, the temperature of tap water for drinking water, dishwashing, chilled water, green tea, coffee, tea, etc. When using with different hot water temperature from boiling water to boiling water, for example, to lower the temperature of the hot water, you have to wait until it cools, and even if you need a small amount of hot water, you have to heat all the hot water For example, it was difficult to freely change the temperature and amount of hot water during use.
[0004]
This invention solves the said subject, and it aims at enabling it to supply only the required quantity in a short time in the different hot water temperature from the temperature of tap water to boiling water.
[0005]
[Means for Solving the Problems]
Means of the present invention for solving the above-mentioned problems comprises a water pipe connected to water and through which water passes, and a heating means provided in the path of the water pipe, the heating means inside the outer wall part and the outer wall part. The heating element is arranged and heated by induction, a heating coil wound around the outer wall, and AC power supply means connected to the heating coil and supplying AC power.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 has a water pipe connected to the water supply and through which the water passes, and heating means provided in a path of the water pipe, the heating means being arranged inside the outer wall part and the outer wall part. It is composed of a heating element to be heated, a heating coil wound around the outside of the outer wall, and an AC power supply means connected to the heating coil to supply AC power. The hot water can be supplied in a short time by heating the required amount to this temperature.
[0007]
In addition , since it has water purification means installed in front of the heating means in the path of the water pipe to purify water or hot water, impurities in tap water are removed to prevent the scale from sticking to the heating element, etc. Delicious hot water can be supplied.
[0008]
Further, the flow rate detection means for detecting the flow rate of water, the flow rate variable means for increasing or decreasing the flow rate of water, and the flow rate control means for inputting the output of the flow rate detection means and controlling the output of the flow rate variable means, Since the flow rate control means makes the amount of hot water discharged to a predetermined flow rate, the flow rate of tap water can be changed to a desired amount of hot water,
A hot water temperature detection means for detecting the temperature of hot water to be installed and discharged near the discharge port; and an electric power control means for inputting the output of the hot water temperature detection means and controlling the output of the AC power supply means, the power control Since the means causes the discharged hot water temperature to be a predetermined temperature, the discharged hot water temperature can be controlled to a desired hot water temperature.
[0009]
The invention according to claim 2 is provided with a flow rate detecting means for detecting the flow rate of water, and the power control means inputs the output of the flow rate detecting means so that the supply of AC power is stopped when the flow rate falls below a predetermined amount. Therefore, when the water flow rate is low, it is not heated, so it is possible to prevent empty cooking.
[0010]
Since the invention according to claim 3 has a draining means for draining the water inside the heating means and the water inside the water purification means , the water inside the heating means is drained when not in use to prevent freezing of tap water. Occurrence can be prevented.
[0011]
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
(Embodiment 1)
As shown in FIG. 1, reference numeral 1 denotes a water pipe that is piped in a home and through which tap water flows. A water pipe 2 is connected to the water supply 1 and has a heating means 7 in its path. The heating means 7 includes an outer wall portion 3, a heating element 4 that is disposed inside the outer wall portion 3 and is induction-heated, a heating coil 5 wound around the outer wall portion 3, and a heating coil connected to the heating coil 5. 5 is constituted by AC power supply means 6 for supplying AC power to 5. Moreover, the heat generating body 4 is comprised by the metal bar 21 by which the drilling process was carried out in parallel with the flow direction of tap water, as shown in the perspective view of FIG.
[0013]
The operation of the above configuration will be described. The tap water supplied from the tap water 1 is used through the water pipe 2 through the heating means 7 in the path. When the hot water temperature to be used is low, the temperature of the heating element 4 induction-heated by the heating coil 5 is kept low by reducing the AC power supplied from the AC power supply means 6 so that water passes through the heating element 4. Since the amount of heat received when the hot water is reduced, hot water having a low hot water temperature is discharged. When the hot water temperature to be used is high, by increasing the AC power supplied from the AC power supply means 6, the temperature of the heating element 4 induction-heated by the heating coil 5 is kept high, and water passes through the heating element 4. Since the amount of heat received when the hot water is increased, hot water having a high hot water temperature is discharged. Therefore, the required amount of tap water can be heated to a desired temperature during use, and hot water can be supplied in a short time.
[0014]
In the above embodiment, the AC power supplied from the AC power supply means 6 is controlled to adjust the hot water temperature, but the flow rate of tap water supplied from the tap water 1 or the flow rate of discharged hot water is controlled. The hot water temperature may be adjusted.
[0015]
In the above embodiment, the heating element 4 is composed of the metal rod 21, but it may be composed of a metal porous body having holes formed in a mesh shape, or a metal rod, a metal pipe, a metal sphere, You may comprise a metal particle and a metal plate individually or in combination.
[0016]
(Embodiment 2)
Next, a second embodiment of the present invention will be described with reference to FIG. In addition, the thing of the same structure as the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. As shown in FIG. 3, reference numeral 8 denotes water purification means for purifying tap water supplied from the water supply 1, and is installed in front of the heating means 7 in the path of the water pipe 2. Other configurations are the same as those in the first embodiment.
[0017]
In the above configuration, the purifying means 8 can remove impurities contained in tap water, chlorine that is damaging the water, and the like. Therefore, impurities of tap water can be removed to prevent the scale from sticking to the heating element 4 of the heating means 7, and delicious hot water for beverages can be supplied.
[0018]
In the above embodiment, the purifying unit 8 is installed before the heating unit 7, but it may be installed after the heating unit 7. Further, pure water may be supplied instead of tap water.
[0019]
(Embodiment 3)
Next, a third embodiment of the present invention will be described with reference to FIG. In addition, the thing of the same structure as the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. As shown in FIG. 4, 9 is a hot water temperature detecting means for detecting the temperature of hot water to be discharged, and is installed near the discharge port. Reference numeral 13 denotes power control means for inputting the output of the hot water temperature detection means 9 via the input means 10 and controlling the output of the AC power supply means 6 via the output means 12. Other configurations are the same as those in the first embodiment.
[0020]
In the above configuration, the hot water temperature detection means 9 can detect the current hot water temperature, so that the AC power supplied from the AC power supply means 6 is controlled according to the temperature difference from the temperature to be used. When the temperature is lower than the temperature you want to use, increase the AC power and raise the hot water temperature.When the current hot water temperature is higher than the temperature you want to use, decrease the AC power, lower the hot water temperature, When the temperature is the same as the temperature you want to use, keep the current AC power and maintain the hot water temperature. Accordingly, the discharged hot water temperature can be controlled to a desired hot water temperature.
[0021]
In the above embodiment, the temperature of hot water to be discharged is detected. However, the temperature of supplied tap water may be detected.
[0022]
(Embodiment 4)
Next, a fourth embodiment of the present invention will be described with reference to FIG. In addition, the thing of the same structure as the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. As shown in FIG. 5, 14 is a flow rate detection means for detecting the flow rate of tap water supplied from the water supply 1, and is installed in front of the heating means 7 in the path of the water pipe 2. Reference numeral 15 denotes power control means for inputting the output of the flow rate detection means 14 via the input means 10 and controlling the output of the AC power supply means 6 via the output means 12. Other configurations are the same as those in the first embodiment.
[0023]
In the above configuration, the power control means 15 stops the supply of AC power to the heating coil 5 when the flow rate of water becomes a predetermined amount or less, so the temperature of the heating element 4 decreases. Therefore, when the water flow rate is low, it is not heated, so that it is possible to prevent empty cooking.
[0024]
(Embodiment 5)
Next, a fifth embodiment of the present invention will be described with reference to FIG. In addition, the thing of the same structure as the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. As shown in FIG. 6, 14 is a flow rate detection means for detecting the flow rate of tap water supplied from the water supply 1, and is installed in front of the heating means 7 in the path of the water pipe 2. Reference numeral 16 denotes a flow rate variable means for increasing or decreasing the flow rate of water, and is installed after the flow rate detection means 14 in the path of the water pipe 2 and before the heating means 7. Reference numeral 17 denotes a flow rate control means for inputting the output of the flow rate detection means 14 via the input means 10 and controlling the output of the flow rate variable means 16 via the output means 12. Other configurations are the same as those in the first embodiment.
[0025]
In the above configuration, the flow rate control means 17 controls the output of the flow rate varying means 16 according to the difference between the tap water flow rate and the desired flow rate. For example, when the tap water flow rate is higher than the desired flow rate, the flow rate is reduced. When the flow rate of tap water is less than the flow rate desired to be used, the flow rate is increased. When the flow rate of tap water is the same as the flow rate desired to be used, the current flow rate is maintained. Therefore, the flow rate of tap water can be changed to a desired amount of hot water.
[0026]
In addition, in the said embodiment, although the flow volume of the supplied tap water was detected, you may detect the flow volume of the hot water to discharge.
[0027]
In the above embodiment, the flow rate varying means 16 is installed before the heating means 7, but it may be installed after the heating means 7.
[0028]
(Embodiment 6)
Next, a sixth embodiment of the present invention will be described with reference to FIG. In addition, the thing of the same structure as the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. As shown in FIG. 7, 9 is a hot water temperature detecting means for detecting the temperature of hot water to be discharged, and is installed near the discharge port. Reference numeral 16 denotes flow rate variable means for increasing or decreasing the flow rate of water, and is installed in front of the heating means 7 in the path of the water pipe 2. Reference numeral 18 denotes a flow rate control means for inputting the output of the hot water temperature detection means 9 via the input means 10 and controlling the output of the flow rate variable means 16 via the output means 12. Other configurations are the same as those in the first embodiment.
[0029]
In the above configuration, since the flow rate control means 17 can detect the current hot water temperature by the hot water temperature detection means 9, the output of the flow rate variable means 16 is controlled according to the temperature difference from the desired temperature, for example, the current hot water temperature If the temperature is lower than the temperature you want to use, decrease the flow rate, increase the hot water temperature by giving the same amount of heat to less water, increase the flow rate if the current hot water temperature is higher than the temperature you want to use, and increase the amount of water The same amount of heat is applied to the water to lower the hot water temperature. When the current hot water temperature is the same as the desired temperature, the current flow rate is maintained and the hot water temperature is maintained. Accordingly, the discharged hot water temperature can be controlled to a desired hot water temperature. Moreover, when it becomes the amount of hot water more than capacity, the amount of hot water can be reduced and hot water of desired temperature can be supplied within the capacity.
[0030]
(Embodiment 7)
Next, a seventh embodiment of the present invention will be described with reference to FIG. In addition, the thing of the same structure as the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. As shown in FIG. 8, 19 is a water draining means for draining water inside the heating means 7, and is installed in front of the heating means in the path of the water pipe 2.
[0031]
In the above configuration, when the water is not used for a long period of time, supply of tap water from the water supply 1 is stopped by the water draining means 19 and water or hot water remaining in the heating means 7 is drained. Therefore, when not in use, the water inside the heating means can be drained to prevent the tap water from freezing and the generation of germs can be prevented.
[0032]
In the above embodiment, the water inside the heating means 7 is drained by the water draining means 19, but the water inside the water purifying means 8 may be drained.
[0033]
【The invention's effect】
As described above, according to the first aspect of the present invention, the water pipe connected to the water supply and through which the water passes, and the heating means provided in the path of the water pipe, the heating means includes an outer wall portion and an inner portion of the outer wall portion. The heating element that is arranged and heated by induction, the heating coil wound around the outside of the outer wall, and the AC power supply means that is connected to the heating coil and supplies AC power is used. Sometimes hot water can be supplied in a short time by heating the required amount of tap water to the desired temperature.
[0034]
In addition, since it has water purification means installed in front of the heating means in the water pipe path to purify water or hot water, it removes impurities from the tap water and prevents sticking of the scale to the heating element, etc. Hot water can be supplied.
[0035]
Further, the flow rate detection means for detecting the flow rate of water, the flow rate variable means for increasing or decreasing the flow rate of water, and the flow rate control means for inputting the output of the flow rate detection means and controlling the output of the flow rate variable means, Since the flow rate control means makes the amount of hot water discharged to a predetermined flow rate, the flow rate of tap water can be changed to a desired amount of hot water,
A hot water temperature detecting means for detecting the temperature of the hot water; and an electric power control means for inputting the output of the hot water temperature detecting means and controlling the output of the AC power supply means. Since the temperature is adjusted, the discharged hot water temperature can be controlled to a desired hot water temperature.
[0036]
According to the second aspect of the present invention, the flow rate detection means for detecting the flow rate of water is provided, and the power control means inputs the output of the flow rate detection means, and supplies AC power when the flow rate falls below a predetermined amount. Since the water is not heated when the flow rate of water is low, empty cooking can be prevented.
[0037]
Further, according to the invention described in claim 3 , since the water draining means for draining the water inside the heating means and the water inside the water purification means is provided, the water inside the heating means is drained when not in use and the tap water is frozen. It is possible to prevent the generation of germs.
[Brief description of the drawings]
1 is a system configuration diagram of a water heater according to a first embodiment of the present invention. FIG. 2 is a perspective view of a metal rod of the water heater. FIG. 3 is a water heater according to a second embodiment of the present invention. FIG. 4 is a system configuration diagram of a water heater according to a third embodiment of the present invention. FIG. 5 is a system configuration diagram of a water heater according to a fourth embodiment of the present invention. Fig. 7 is a system configuration diagram of a water heater according to the fifth embodiment of the present invention. Fig. 7 is a system configuration diagram of a water heater according to the sixth embodiment of the present invention. Fig. 8 is a water heater according to the seventh embodiment of the present invention. System configuration diagram [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water supply 2 Water pipe 3 Outer wall part 4 Heating body 5 Heating coil 6 AC power supply means 7 Heating means

Claims (3)

A water pipe through which the water is connected to the water supply, a heating means provided in the path of the water pipe, before Symbol heating means and the outer wall portion, the heating element is induction-heated is placed inside of the outer wall, the outer wall A heating coil wound outside the unit and an AC power supply means connected to the heating coil and supplying AC power, and is installed before the heating means in the path of the water pipe to purify water or hot water A water temperature detecting means that has water purifying means and that is installed near the discharge port to detect the temperature of the hot water to be discharged, and an electric power control that inputs the output of the hot water temperature detecting means and controls the output of the AC power supply means Means, flow rate detection means for detecting the flow rate of water, flow rate variable means for increasing or decreasing the flow rate of water, and flow rate control means for inputting the output of the flow rate detection means and controlling the output of the flow rate variable means. The flow rate control means discharges Controls so as to flow in a predetermined flow rate, the power control unit, water heater temperature of hot water to discharge that control to a predetermined temperature. Water heater according to the power control means, according to claim 1 flow ing controlled to stop the supply of the AC power becomes a predetermined amount or less. The water heater according to claim 1 or 2, further comprising a draining means for draining water inside the heating means and water inside the water purification means .

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