JPH0532955U - Induction water heater - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The heating cap at the bottom of the inside of the insulating hot water storage container is heated under the outside of the outside by the induction coil at the center to maintain clean environmental conditions for construction work. Don't cost too much to maintain. Constitution: In a means for supplying hot water or the like, a cylindrical hollow raised portion 7 provided at the bottom of an insulative hot water storage container and a cylindrical side surface and a top portion of the hollow raised portion spaced apart from the outside A heating cap 16 that surrounds and has fins 17 on its outer surface, a lower support ring 15 that supports the lower end of the heating cap, a protective cover 20 that surrounds the heating cap, and a hollow ridge with the above-mentioned It is composed of an induction coil 4 provided concentrically with the heating cap, and a magnetic flux generating section connected to the induction coil.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an induction water heater suitable for use in business or household use, for example, for bathtubs, kitchens, laundry, etc., and is particularly quick and highly efficient due to its clean type that does not generate exhaust gas. It relates to an induction water heater that supplies hot water or hot water.

[0002]

[Prior Art]

 Conventionally, a hot water or hot water supply device has a gas instantaneous water heater using city gas, propane gas, etc. as its method, which is as follows. That is, a pipe through which water flows to the faucet is provided, and a heat exchange part is provided in the middle of the pipe to heat the heat exchange part with a gas burner to heat the water. A igniter is provided adjacent to the gas burner for automatic ignition, and a diaphragm device is installed in connection with the pipe. The igniter of the igniter is always ignited during use. When the faucet of the pipe is opened in this state, the water pressure in the pipe rises, the diaphragm device operates, gas is supplied to the gas burner, and the gas burner is ignited by igniting and heat exchange in the heat exchange section. The water is boiled as it is cooked. Another type is an electric water heater using electric heat. It is equipped with a relatively large heat-insulating aquarium, and uses late night electricity to boil water. The heating element such as a nichrome wire is directly energized to cover the heating element with an insulator. In this way, the boiling water is used while maintaining the temperature until daytime.

[0003]

[Problems to be solved by the device]

 However, although the gas instantaneous water heater can be rapidly heated by automatic ignition, it has the following problems. Needless to say, it costs money to install the piping for supplying fuel gas, but if it is installed later, the piping may damage the aesthetics of the interior and exterior of the building, and the risk of gas leakage from this piping. There is also. In addition, it is necessary to pay attention to sufficient ventilation for exhaust gas, and at the same time, since the igniter is always ignited during use, it is not a problem from the viewpoint of energy saving. If it is extinguished, a misfire and gas poisoning will occur. Even if it is not blown out in this way, there is also the drawback that there is a danger that an oxygen deficiency accident will occur due to ignition of the spark for a long time. On the other hand, since the electric water heater supplies hot water by indirect resistance electric heating as described above, it has a problem that thermal efficiency is low, fuel consumption is high, and the amount of supplied hot water is limited.

In view of the above problems, the object of the present invention is to maintain clean environmental conditions, eliminate the need for energy supply pipes that are costly for construction, maintenance, etc., and at the same time do not cause the various accidents described above. Moreover, it does not consume energy such as the fire of a gas water heater, has high thermal efficiency, can reduce operating costs and equipment costs, and can constantly maintain a relatively large amount of hot water as needed. It is to provide an induction water heater that can be secured both temporarily and temporarily.

[0005]

[Means for Solving the Problems]

 The induction water heater of the present invention, in a means for supplying hot water or hot water, has a cylindrical hollow ridge provided at the bottom of an insulative hot water storage container and the hollow ridge of the hollow ridge spaced from the hollow ridge. A heating cap that surrounds the cylindrical side surface and the top from the outside and has fins on its outer surface, a lower support ring that supports the lower end of the heating cap, a protective cover that surrounds the heating cap, and the hollow protrusion. It is characterized in that it comprises an induction coil concentrically provided with the heating cap in a hollow part of the part, and a magnetic flux generating part connected to the induction coil.

[0006]

[Action]

 When the power switch is turned on with sufficient water in the hot water storage tank through the water supply port, a current with a specified frequency flows through the magnetic flux generator to the induction coil provided in the hollow part of the hollow ridge. As a result, an alternating magnetic flux is generated around the induction coil and in the vicinity thereof. The magnetic flux generated in this way generates an eddy current in the heating cap that is provided concentrically with the induction coil, and heats this heating cap instantaneously. Here, a large number of fins are provided on the outer surface of the heating cap, and the water is in contact with the side surface and the top surface through the fins, so this water is heated and the water temperature is set to the set value. When it reaches, the temperature detector detects it and the electromagnetic relay opens, the current to the induction coil is cut off and the heating operation is stopped. On the other hand, when the temperature drops, the electromagnetic relay closes and heating resumes. In this way, hot water can be discharged from the hot water faucet, and when the hot water in the hot water storage container decreases, this decrease is detected by the water level controller, and at the same time, for example, the valve in this water level controller is opened, and the water supply from the water supply port is supplied. Is done. In the above, only the heating cap is heated and the other parts do not become higher than the hot water temperature. A protective cover having a through hole is provided on the outside of the heating cap having fins for convenience of handling.

[0007]

【Example】

 An embodiment of the induction water heater of the present invention will be described below in detail with reference to the drawings. 1 is a partial cross-sectional schematic view of an embodiment of the induction water heater of the present invention, FIG. 2 is a schematic cross-sectional view of the induction water heater of the present invention taken along the line AA of FIG. 1, and FIG. 3 is an induction water heater of the present invention. FIG. 4 is a schematic enlarged cross-sectional view of the essential portion of the water heater shown in FIG. 1, and FIG.

As shown in the drawings, the induction water heater 1 of the present invention is composed of, for example, a hot water storage container 2, a heating cap portion 3, an induction coil 4, a magnetic flux generating portion 5, and the like. The hot water storage container 2 is formed into a cylindrical container shape by using an insulating material such as hard polypropylene or hard plastic such as polyvinyl chloride. The container bottom portion 6 is provided with a hollow raised portion 7 having a cylindrical shape, for example, at the center thereof. On the other hand, a water supply port 8 is provided in, for example, the upper portion of the hot water storage container 2, and a water level adjuster 9 is attached thereto. As the water level controller 9, a general one can be used. For example, a float type water level detector (not shown) and a supply valve 10 are provided. The supply valve 10 supplies the water according to the operation of the water level detector. To control. A hot water faucet 11 that is manually operated, for example, is provided corresponding to the water supply port 8, and the hot water is used by this operation. A temperature detector 12 such as a thermistor (not shown) is provided on the side of the hot water storage container 2, for example, and its output is input to, for example, an electromagnetic relay 13.

The heating cap portion 3 is provided outside or above the hollow raised portion 7. An annular spacer 14 is provided above the hollow raised portion 7, and a lower support ring 15 is provided below the annular spacer 14. A heating cap 16 is placed on the hollow ridge 7 via the spacer 14. The heating cap 16 is spaced from the hollow ridge 7 and surrounds the hollow ridge 7 from the outside. A large number of ring-shaped fins 17, for example, are provided on the surface of the heating cap 16 to increase the heat radiation surface. The heating cap 16 is made of, for example, stainless steel or other metal that has been subjected to rust prevention and corrosion treatment. The spacer 14 is made of, for example, a ceramic material and has an annular shape and is provided with a recess 18 on the lower surface. The concave portion 18 corresponds to the hollow raised portion 7 and is fitted into the raised top portion 19. A protective cover 20 is attached to the outer side or the upper side of the heating cap 16. The protective cover 20 is made of, for example, an insulating material such as hard polypropylene or hard polyvinyl chloride, and is fixed by the lower support ring 15. A through hole 20b is provided in the protective cover 20 over almost the entire area. Like the spacer 14, the lower support ring 15 is made of, for example, a ceramic material. The ring groove 21 is formed in an annular shape, and a ring groove 21 is prepared in an upper portion of the annular ring, and the lower edge 20 of the heating cap 16 is inserted and fixed therein. Further, an annular notch 22 is also provided, and the projection 23 at the bottom of the protective cover is hooked there.

The induction coil 4 is provided inside or under the hollow ridge 7. The induction coil 4 is arranged concentrically with respect to the heating cap 16. For example, the induction coil 4 is first formed on the bobbin 24, and then the induction coil 4 is mounted in the hollow portion 25 of the hollow raised portion 7 to complete the formation of the induction coil 4.

The induction coil 4 is designed to interlink with the heating cap 16 via a magnetic flux, and a selected low frequency alternating current or the like flows therethrough, whereby a magnetic flux passing through the heating cap 16 is formed. Then, an eddy current flows and is rapidly heated, and the water in the hot water storage container 2 is converted into a heated state via the fins 17 and the like.

As shown in FIG. 4, the magnetic flux generating unit 4 is composed of an electromagnetic relay 13, an inverter 26, a matching unit 27, an induction coil 4, etc., and the electromagnetic relay 13 is attached to the side of the hot water storage container 2. Further, it operates by an electric signal from the temperature detector 12, and is turned on when the temperature of the hot water in the hot water storage container 2 is equal to or lower than a set temperature, and turned off when the temperature reaches the set temperature. The inverter 26 is a frequency converter that receives power from the commercial power source 28 via the power switch 29 and the electromagnetic relay 13, and can select several frequencies. The matching device 27 includes a balancer, a matching transformer, a power factor improving capacitor, and the like.

Next, the operation of the induction water heater of the present invention will be described. When the power switch 29 is turned on in a state where sufficient water is filled in the hot water storage container 2 through the water supply port 8, a current having a specified frequency is provided in the hollow portion 25 in the hollow ridge portion 7 via the magnetic flux generating portion 5. It flows to the induction coil 4 that has been set. As a result, an alternating magnetic flux B is generated in the vicinity of the interlinkage with the induction coil 4. The magnetic flux B generated in this way generates an eddy current in the heating cap 16 provided concentrically with the induction coil 4 to heat the heating cap 16 at an instantaneous speed. Here, since the water is in contact with the fins 17 on the side surface and the top surface of the heating cap 16 and the through hole 20b is provided in the protective cover 20, the entire water is heated and the temperature of the water is raised. When the set value is reached, it is detected by the temperature detector 12, the electromagnetic relay 13 is opened, the current to the induction coil 4 is cut off, and the heating operation is stopped. On the other hand, when the temperature drops, the electromagnetic relay 13 is closed and heating is restarted. In this way, hot water can be discharged from the hot water faucet 11 as needed. When the amount of hot water in the hot water storage container decreases, this decrease is detected by the water level adjuster 9, and at the same time, for example, the valve 10 in this water level adjuster 9 is opened and water is supplied from the water supply port 8.

[0014]

[Effect of the device]

 The induction water heater of the present invention is, in the means for supplying hot water or hot water, a hollow cylindrical raised portion provided at the bottom of an insulating hot water storage container and the hollow raised portion spaced apart from the hollow raised portion. A heating cap that surrounds the cylindrical side surface and the top part from the outside and has a fin on its outer surface, a lower support ring that supports the lower end of the heating cap, and a protective cover that surrounds the heating cap. Since it is composed of an induction coil concentrically provided with the heating cap in the hollow portion of the hollow ridge, and a magnetic flux generating section connected to the induction coil, sufficient water is put in the hot water storage container to turn on the power supply. When it enters, the heating cap is rapidly heated by its eddy current through the magnetic flux formed by the induction coil, and the water that comes into direct contact with this heating cap through its fins quickly becomes hot water. Overall conversion by water also heated to convection or the like passing through the hole.

As compared with the normal electric heating method, the water of the object to be heated is in direct contact with the heating cap of the heating means, so that the thermal efficiency is high and the heating time is greatly shortened. Generally, it is not necessary to interpose an insulating material having a low electric conductivity between the water to be heated and the heating means as in the case of ordinary electric heating. The heated part is covered with a protective cover, so it is safe to handle.

[0016] Even without using fossil fuels such as city gas, natural gas, it is possible to boil hot water instantaneously, and environmental conditions are kept extremely clean in connection with the need for no fire and ventilation. The various accidents mentioned above that may occur due to slight missteps do not occur at all, and at the same time, gas piping work etc. is not required, the cost is low, and the appearance of the interior and exterior of the building is not spoiled.

Further, since the heating system as described above does not cause the heating equipment to be locally exposed to a high temperature to be oxidized, this equipment is robust and can be used for a long period of time. It has a remarkable effect on the industry.

[Brief description of drawings]

FIG. 1 is a schematic partial sectional view showing an embodiment of the induction water heater of the present invention.

FIG. 2 is a schematic cross-sectional view of the induction water heater of the present invention with line AA of FIG. 1 omitted.

FIG. 3 is an enlarged schematic cross-sectional view of a main part of FIG. 1 of the induction water heater of the present invention.

FIG. 4 is a block diagram showing an outline of an electric system of the induction water heater of the present invention.

[Explanation of symbols]

 1 Induction Water Heater 2 Hot Water Container 3 Heating Cap Part 4 Induction Coil 5 Magnetic Flux Generation Part 6 Container Bottom 7 Hollow Ridge 8 Water Supply Port 9 Water Level Controller 10 Supply Valve 11 Hot Water Faucet 12 Temperature Detector 13 Electromagnetic Relay 14 Spacer 15 Bottom Support ring 16 Heating cap 17 Fin 18 Recess 19 Recessed top 20 Protective cover 21 Ring groove 22 Notch 23 Protrusion 24 Bobbin 25 Hollow part 26 Inverter 27 Matcher 28 Commercial power supply 29 Power switch

Claims (1)

[Scope of utility model registration request] 1. A means for supplying hot water, hot water, or the like, wherein a hollow cylindrical protrusion is provided at the bottom of an insulating hot water storage container, a cylindrical side surface of the hollow protrusion spaced apart from the hollow protrusion, and A heating cap that surrounds the top from the outside and has a fin on its outer surface, a lower support ring that supports the lower end of the heating cap, a protective cover that surrounds the heating cap, and a hollow of the hollow ridge. An induction coil concentrically provided with the heating cap in the section,
An induction water heater comprising a magnetic flux generator connected to the induction coil.