JP5467614B2 - Instant water heater - Google Patents

Description

  The present invention relates to an instant water heater that becomes hot water by Joule heat of magnetic flux when water passes through a pipe.

  A conventional instant water heater or boiler is a device that heats water in a sealed steel vessel using oil or gas and vaporizes it to generate steam. There are various types such as vertical boiler, horizontal boiler, round boiler, smoke tube boiler, water tube boiler.

  An electromagnetic cooker is an appliance for heating that self-heats a predetermined type of metal cooking utensil by an electric current flowing through a coil arranged inside. The heating principle is induction heating, also called an IH cooker. It uses only electricity without using gas or fire. Generally speaking, it is a cooker that has a stove shape. It may also include equipment that uses the same heating principle, such as an IH rice cooker. When it is called IH cooking heater, it often refers to a stove type cooker.

  As a method of heating a pipe by a high-frequency device, a pipe induction heating device disclosed in Japanese Patent Application Laid-Open No. 2005-100535 is intended to weld ends of pipe members such as steel pipes to each other or braze to a side surface for repair or the like. It is. When such induction heating is to be applied, the pipe member is arranged inside the air-core-shaped induction coil, and a high frequency power source of 30 kHz or higher is supplied to the induction coil to thereby generate alternating magnetic field lines inside the pipe member. Is generated and induction heating is performed. However, by arranging a large number of U-shaped induction cores on the pipe member, the efficiency is increased.

JP 2011-1113846 A JP2005-1000093 JP 2004-214039 A

  A conventional boiler is a device that heats water in a sealed steel plate container using oil or gas and vaporizes it to generate steam, or a device that produces hot water. Before opening the faucet and getting hot water, the water in the basin was wasted to warm the way. Similarly, the boiler that generates steam does not become steam while the piping is warm, and it takes time before it can be used as steam.

  An electromagnetic cooker is an appliance for heating that self-heats a predetermined type of metal cooking utensil by an electric current flowing through a coil arranged inside. If you use only an electric power supply that does not use gas or fire, and you use it for an instant water heater, you do not bring things such as a pot at that time, but it is a built-in pipe, so you can increase efficiency it can.

  As a method of heating a pipe by a high-frequency device, the pipe induction heating device disclosed in Japanese Patent Application Laid-Open No. 2005-100935 welds and joins end portions of pipe members such as steel pipes. Many induction magnetic cores were arranged on the pipe member. However, if it is not removed, the efficiency is further increased by winding the coil directly around the pipe member.

  Therefore, in the instant water heater of the present invention, the tube (1) is wound with the coil (3) via the bobbin (2), and includes a large number of outer plates (4) so as to surround the bobbin (2). By supplying a high frequency current to the coil (3) by the high frequency generator (3b), the magnetic flux (2a) is concentrated on the tube (1), and an instantaneous water heater is provided which makes hot water by Joule heat.

  In order to achieve the above object, in the instant water heater of the present invention, the coil (3) is wound around the tube (1) through the bobbin (2), and a large number of outer plates (4) are provided so as to surround the bobbin (2). ). And the coil (3) achieved the objective by interposing the high frequency generator (3b) from the power source (3a).

  In the instant water heater according to claim 2, the pipe (1) has a plurality of coils (3) wound around a bobbin (2), and includes a plurality of outer plates (4) so as to surround the bobbin (2). It is. And the several coil (3) achieved the objective, when a thermostat (5) energized each coil (3) from the power supply (3a) via the high frequency generator (3b).

The instant water heater of the present invention has the following effects.
(B) Instantaneous water heaters using high frequency generators have good heat conversion efficiency.
(B) Since conversion efficiency is good, there is no heat release, so it can be installed anywhere.
(C) Because the capacity of the instantaneous water heater is small, it can be installed anywhere.
(D) Since the capacity of the instantaneous water heater is small, it can be attached to each faucet.
(E) Since it can be attached to each faucet, it takes a short time for hot water to come out.
(F) This instant water heater is good at controlling the temperature, so there is no need to mix it with water, so there is no need to draw a separate pipe.
(G) In the instant water heater of claim 2, the temperature can be adjusted by installing three coils and turning each coil on and off.
(H) If steam is made with an instant water heater, 160 degrees of steam of 0.2 Pascals can be made with water.
(Li) If an instant water heater is attached to the high pressure washer, 6 Pascal 600 degree steam can be produced.
(Nu) When steam is used in a dishwasher, no detergent is required.

The figure is a perspective view of an instantaneous water heater showing an example of use. The figure is a perspective view showing a cross section of an instantaneous water heater. The figure shows the principle in a sectional view of an instantaneous water heater. The figure is a cross-sectional view of an instantaneous water heater. It is a front view of the instant water heater of AA. It is sectional drawing of the instant water heater of BB. The figure is a half sectional view of the instant water heater of claim 2. The figure is a side view of an instantaneous water heater attached to a high-pressure injector.

  In the instant water heater of the present invention, a bobbin (2) insulated with an insulator is inserted into an iron water pipe (1), a coil (3) is wound around the outside of the bobbin (2), and the coil (3) is It is connected to a power source (3a) via a high frequency generator (3b). The high-frequency generator (3b) replaces the commercial power supply with 100 kHz, and there is no fear of high-frequency leakage outside like an electromagnetic cooker. Therefore, safety can be maintained even at such a frequency.

  The outer plate (4) having a substantially concave shape so as to surround the bobbin (2) is in contact with the tube (1) by the outer plate (4), and the outer plate (4) exceeds the bobbin (2). Contact tube (1). As for the outer plate (4), the thin outer plate (4) is arranged in a radial pattern corresponding to the outer circumference of the tube (1), the surface of the tube (1) is arranged without any gap, and the magnetic flux (2a) is induced. Therefore, the outer plate (4) is preferably silicon steel.

  The iron core is a path for magnetic flux (2a). Therefore, it seems to be sufficient to use a ferromagnetic material that can easily pass through the magnetic flux (2a), for example, mild steel, but this is not good. Because the magnetic field of the instantaneous water heater is the outer plate (4), the magnetic flux (2a) passing through the iron core of the outer plate (4) varies depending on the high frequency of the power source (3a). Therefore, if it is a normal steel ingot, there will be many eddy current loss and hysteresis loss, and it will heat the place which it does not want to warm.

  Therefore, in order to reduce the eddy current loss, it is necessary to insulate and stack thin steel plates made of a material having high specific resistance one by one so that current does not easily flow in a direction perpendicular to the magnetic flux (2a). . In order to reduce the hysteresis loss, it is necessary to select a material having a small area of the hysteresis loop drawn by the magnetization curve.

  That is, the magnetic flux (2a) passes through the tube (1), and the outer plate (4) returns the magnetic flux (2a) to the other tube (1). At that time, the magnetic flux (2a) is sufficiently passed through the thick outer plate (4) as compared with the thickness of the tube (1). And the magnetic flux (2a) becomes resistance when passing through the tube (1), and Joule heat must be generated only in the tube (1).

  Since the outer plate (4) is attached to the outer diameter of the tube (1), the outer plate (4) is not attached more than the outer diameter of the tube (1). And since the outer side of the outer plate (4) is radially open, wiring is made from there to connect the high frequency generator (3b) and the coil (3).

  For wiring, a coil (3) is wound around a bobbin (2) provided in the tube (1). The bobbin (2) is made of a heat-resistant insulator and is a non-magnetic material. Therefore, an object such as an insulator, glass, or ceramic is preferable.

  When a high frequency is passed through the coil (3) from the high frequency generator (3b), a magnetic flux is generated in the coil (3), the magnetic flux passes through the tube (1) made of iron, and the outer plate (4) is passed through. Return to pipe (1). Next, the reverse current flows, the current flows 100,000 times per second by the high-frequency generator (3b), and the tube (1) becomes a resistance when the magnetic flux (2a) passes through. Joule heat.

  More specifically, in the instant water heater, a 100 kHz alternating current obtained by converting from commercial power by the high frequency generator (3b) of the inverter is a coil (3) arranged close to the instantaneous water heater tube (1). ) To generate a magnetic flux (2a) that alternates at the same frequency as the current. The central tube (1) is made of iron, and the iron tube located in the region covered with the magnetic flux (2a) self-heats and can be heated. Water is passed to cool the self-heated pipe (1), and the water becomes hot water, so that an instantaneous water heater is formed.

  This heat is a Joule heat in which an eddy current induced by the principle of electromagnetic induction is converted into heat by the electric resistance of a metal due to a time change of the magnetic flux (2a), or an alternating magnetic flux (2a) is a tube (1 ) Is a hysteresis loss of heat generated in the magnetic material. Since the tube (1) itself is self-heating that generates heat, the instantaneous water heater has high thermal efficiency from the viewpoint of input power. However, in order to convert electrical energy into thermal energy, power generated at a thermal power plant is converted back into thermal energy. As a result, the total energy efficiency including the power plant is about 6%.

  However, although it is about 6%, the current technology is efficient and has no advantages such as no waste gas for heating, small capacity, simple temperature control, and good conversion rate of heat energy. There is.

  The instantaneous water heater according to claim 2 can adjust the temperature by using a plurality of coils (3). The tube (1) has a plurality of coils (3) wound around a bobbin (2), and includes a plurality of outer plates (4) so as to surround the bobbin (2). In the plurality of coils (3), the thermostat (5) energizes each coil (3) from the power source (3a) via the high frequency generator (3b).

  The coil (3) adjusts the temperature by turning the thermostat (5) on and off. The thermometer (5a) attached to the outlet of the pipe (1) measures the temperature of the hot water, and the data is sent to the thermostat (5). The thermostat (5) is turned off when the set temperature is exceeded. There is a thermostat (5) that is turned off shortly before the set temperature is exceeded.

  Therefore, when the temperature is low, the plurality of coils (3) are all activated to raise the temperature. When the temperature reaches the set temperature, the coil (3) is turned off via the thermostat (5), and the temperature is maintained only by the other coil (3). When the temperature rises further, all the coils (3) are turned off and the temperature is lowered. When the temperature falls, the thermostat (5) turns on the switch and a current flows through the coil (3) to raise the temperature, but when further lowered, all the coils (3) are turned on to adjust the temperature. In short, since there is a difference between ON and OFF in one coil (3), it is easier to adjust the temperature in the plurality of coils (3).

The instant water heater of the present invention will be described with reference to the drawings.
The side view of FIG. 1 is a water tap (6), which is an instantaneous water heater attached to the pipe (1) of the tap (6). The power consumption is 1200 w. When the power source (3a) is first turned on, the high frequency generator (3b) replaces the commercial power source (3a) 60 Hz with a high frequency of 100 kHz, and the thermostat (5) adjusts the temperature of the hot water outlet of the pipe (1) with a thermometer ( It is measured in 5a). At first, since the tube (1) is at room temperature and no high frequency is flowing through the coil (3), the thermostat (5) is turned on because the temperature is low.

  When a high frequency flows through the coil (3) and the tube (1) is warmed to a set temperature of 40 degrees, the thermostat (5) is activated and the coil (3) is turned off so that no high frequency flows. If the valve of the faucet (6) is opened there and water of 4 to 16 degrees Celsius is passed through the pipe (1), the thermometer (5a) is lowered and the thermostat (5) is turned on, and the hot water is 40 degrees Celsius. Keep 40 degrees or less to keep the degree.

  If the temperature exceeds 40 degrees, the thermometer (5a) tells the thermostat (5) that the temperature has risen, and the thermostat (5) turns off the current switch, and no current flows through the coil (3). If the temperature decreases, the thermostat (5a) is notified to the thermostat (5), the switch of the thermostat (5) is turned on, and the hot water keeps 40 degrees or less so as to keep 40 degrees Celsius. However, since this instant water heater is a simple type, the temperature is determined by the amount of water. Therefore, when only a small amount of water is to be dispensed, it will become warm water at a high temperature of 40 ° C. The hands that wash the dishes do not feel much different at 20 degrees or 40 degrees.

  The electric heat of this thermostat (5) is a device that maintains the temperature at a certain value by utilizing its ability to freely control the temperature and the ability to maintain a constant temperature. There are bimetals using metal thermal expansion coefficient and bellows type using gas expansion, and it can be attached to the thermometer (5a). 3a) When the thermostat (5) is operated, the faucet (6) does not get in the way. Further, as a method of directly taking the temperature from the thermometer (5a), there is a method of taking the temperature with a copper wire and transferring the temperature to a bimetal thermostat in the thermostat (5). This method is ideal because copper wire has good thermal conductivity.

  FIG. 2 is a cross-sectional view of the instantaneous water heater. The pipe (1) is made of iron having a diameter of φ16, the inner diameter is φ14, and the wall thickness is 1 mm. Since there is an insulated bobbin (2) on the outside and it is made of an insulating non-magnetic material, glass, insulator or ceramic is preferable. The length of the bobbin (2) is 80 mm, and a coil (3) of φ0.5 is wound around the bobbin (2) 2000 times.

  Although the coil (3) is wound 9 times in the drawing, it is actually wound 2000 times and can only be wound 160 times in one layer, so there are 12 layers, and the thickness of the coil (3) is 6 mm. The pipe (1) is φ16, the bobbin (2) is φ18, and when the coil (3) is wound, it becomes φ30. The outer plate (4) wraps them and the magnetic flux (2a) of the outer plate (4) passes through, and the narrowest place is 5 mm. Therefore, the diameter of the instantaneous water heater is φ40 in total.

  And since the diameter of the appearance of the instantaneous water heater is φ40 and the total length is 100 mm, it has a small capacity and can be attached anywhere, so that any faucet (6 ) Can also be installed.

  FIG. 3 shows the principle in a sectional view of an instantaneous water heater. A positive current is passed through the coil (3) wound inside. The magnetic flux (2a) flows as shown in the figure. Since the tube (1) is as narrow as 1 mm, the magnetic flux (2a) flows in a concentrated manner. Since the place where the magnetic flux (2a) flows is as wide as 5 mm at the minimum, the outer plate (4) advances to the right on the outer plate (4) and moves to the left in the tube (1) with a large arrow. When the magnetic flux (2a) enters the tube (1), it becomes extremely narrow and becomes a resistance. Therefore, the lead line which shows magnetic flux (2a) points out two, the big arrow of an outer plate (4), and the small arrow which passes a pipe | tube (1).

  Next, when a negative current flows, the arrow of the magnetic flux (2a) turns in the opposite direction. Such switching is repeated 100,000 times per second, and Joule heat is generated where the resistance is high. Therefore, since only the tube (1) is heated, there is no waste of energy and there is no element for raising the room temperature.

  4 is a cross-sectional view of the instantaneous water heater, which is a position representing the cross section AA in FIG. 5 and a position representing the cross section BB in FIG. 6.

  FIG. 5 is a frontal water heater as viewed from the left side of A-A. In the drawing, 16 sheets of the outer plate (4) made of silicon steel of 0.5 mm are shown, but in actuality, 100 sheets. Attach as shown. Since the diameter of the pipe (1) is φ16 and the outer circumference is 50.24 mm, 100 outer plates (4) have 100 sheets when 0.5 mm of silicon steel is arranged on the pipe (1). 100 pieces of silicon steel of the outer plate (4) are installed without gaps. Then, since the thickness of the tube (1) is 1 mm and the thinnest part of the outer plate (4) is 5 mm, the outer plate (4) has a sufficient width for the magnetic flux (2a) to pass therethrough. The resistance of 2a) is concentrated in the tube (1).

  The vertical length of the outer plate (4) is 12 mm, and when arranged outside the tube (1), the diameter becomes φ40. The side of the outer plate (4) is 100 mm, and the bobbin (2) of 80 mm can be inserted inside. In the figure, the left side surface of the bobbin (2) is in the outer plate (4), and the left and right side surfaces are thick to wind the coil (3).

  The bobbin (2) has a length of 80 mm and a coil (3) of φ0.5 wound 160 times in one layer and wound about 2000 times in 13 layers. The 13 layers are 6 mm thick, and the diameter of the bobbin (2) is φ30. The bobbin (2) is in the outer plate (4) as shown in the figure.

  FIG. 6 is a cross-sectional view of a BB instantaneous water heater. The cross-sectional view has a tube (1) in the center, a bobbin (2) on the outside, a coil (3) on the outside, and a coil (3) wound nine times as shown in the figure. Although it becomes a cross section, it is actually wound 2000 times. There is an edge of the bobbin (2) on the outside and it is slightly visible because it is larger than the coil (3). There is an outer plate (4) on the outside, and it spreads in 16 radial shapes, but there are actually 100. The power source (3a) cord is wired from the gap between the outer plates (4) to the high frequency generator (3b) through the thermostat (5).

  The actual use will be described with reference to FIG. FIG. 1 shows a kitchen faucet, which is mainly used for washing dishes in the kitchen, and a set temperature of hot water of 40 to 20 degrees is sufficient. Accordingly, since the temperature is low, such a simple and small capacity may be used.

  A thermometer (5a) for operating the thermostat (5) is provided at the outlet end of the pipe (1) of the faucet (6), and the thermometer (5a) is provided in the high frequency generator (3b). The thermostat (5) is turned on and turned on, a high frequency flows through the high frequency generator (3b), a high frequency flows through the coil (3) attached to the faucet (6), and heat is generated by Joule heat.

  When heated by heat generation, the tube (1) immediately warms up, the thermometer (5a) is informed to the thermostat (5), the thermostat (5) is turned off, and the high frequency generator (3b) The power is turned off and power is not supplied. Since this method does not waste a single drop of water, it is an idling operation to raise the initial temperature when the device is warmed and water passes.

  Therefore, water is discharged from the tap (6), and the water serves as cooling water. As a result, the water discharged from the tap (6) becomes warm water. Hot water is 2 liters per minute, and 60,000 calories, with 10 degrees water being 40 degrees hot water. If the valve of the faucet (6) is released further and water is discharged, it will be 25 degrees at 4 liters per minute. At 10 liters per minute it will be 16 degrees.

  Since the thermostat (5) is used within a range of 60,000 calories, the thermostat (5) is simply turned on and off. When fine temperature adjustment is required, the thermostat (5) is adjusted by adjusting the cooling water. However, if it is less than 2 liters, the thermostat (5) will be activated and cut off, and the next time it is activated and switched on, there is a possibility that the temperature adjustment will not be successful because it is 10 degrees of cold water. So it is necessary to keep more than 2 liters.

  The advantage of this instant water heater is that it creates heat before using it, and since the path from the warmed place to the place where it is used is long in the conventional boiler, the hot water comes out only when the piping in the road warms up, A full washbasin was wasted, but that is not the case.

  In addition, those using conventional instantaneous water heater gas contaminated the indoor air, and there was an accident that caused carbon monoxide poisoning with waste gas, but to heat the tube (1) at high frequency There is no such thing. Furthermore, since it has a small capacity, it can be installed anywhere.

  When using in a bath or the like, the hot water is poured out as described above, and when the bathtub has cooled, the nut attached to the faucet (6) can be removed, and the entire instant water heater can be submerged in the bathtub for additional cooking. At that time, if the thermometer (5a) is attached to the lower side, the thermostat (5) does not operate, the hot water entering the pipe (1) is warmed and flows upward, and convection occurs.

  In addition, when a submersible pump is attached, what is circulated by convection is forcibly circulated, so there is no need to attach the entire instant water heater to the hot water, and it is safe and can be cooked.

  The instant water heater of claim 2 is attached in front of the faucet (6) of the water pipe, and the pipe (1) is φ21 and a plurality of coils (3) are wound through the bobbin (2), and φ0.3 The coil (3) is wound three times, 2000 times. A large number of outer plates (4) are provided so as to surround the bobbin (2).

  In the three coils (3), the thermostat (5) energizes each coil (3) from the power source (3a) via the high frequency generator (3b). The thermostat (5a) of the thermostat (5) is attached to a place close to the faucet (6).

  The coil (3) can be adjusted in temperature by changing the set temperature of the thermostat (5). For example, when 60 degrees is set, the thermostat (5) of the coil (3) is turned off at 60 degrees. Another coil (3) sets the temperature at which the thermostat (5) is turned off to 59 degrees. Therefore, when the temperature exceeds 59 degrees, the coil (3) is not energized by the action of the thermostat (5), and therefore the other coil (3) is operated, so that a fine set temperature can be maintained.

  In addition, another coil (3) sets the thermostat (5) at 58 degrees, and when it is first operated and when the temperature during normal use is 58 degrees or less, it is an abnormal situation, and in order to raise the temperature, The third coil (3) is energized to recover the temperature quickly.

  The reason why this multiple coil (3) is installed is because there is a difference between when the temperature control is energized and when it is not energized. Depending on the temperature, it was divided when one coil (3) was energized, when two coils (3) were energized, and when three coils (3) were energized.

  Instantaneous water heaters can also be boilers. There is a water pipe (1), an instant water heater is attached to the pipe (1), and a faucet (6) is attached. Then, when the water pressure or 0.2 Pascal is applied, the water in the pipe (1) turns into steam at about 160 degrees, and steam is ejected by opening the faucet (6).

  Therefore, steam is ejected, and the steam has the property of releasing the heat accumulated in the gas. Therefore, when used in a dishwasher, a dishwasher that does not require a detergent can be formed. In the case of water or hot water, oil stains and the like did not fall off without a detergent, but the oil falling by spraying steam is used for washing the engine room of an automobile. Is wiped cleanly.

  It is a side view of the high pressure injector (7) of FIG. If an instantaneous water heater is attached to the high-pressure injector (7), 6 Pascal 600 degree steam can be produced. The commercially available high-pressure injector (7) injects 6 Pascals of 5 liters per minute and consumes 700 w of power. An instantaneous water heater is attached to the pipe (1) φ10 connected to the injection port (7a) of the high-pressure injector (7).

  The instantaneous water heater has a width of 400 mm, the outer plate (4) has a width of 400 mm, and the bobbin (2) has a diameter of 380 mm and a coil of φ1 (3) is wound 2000 times on a thin φ12. Φ22 at the layer. And if 5 mm of the outer plate (4) is added to the outside of φ22, it becomes φ32. The outer plate (4) is made of 63 sheets in total.

  To replace 5 liters of water per minute with steam, 1.25 million calories are required and 20 kW is required. However, the high-pressure injector (7) that injects 5 liters per minute is about 4000 times the volume when steam comes out because the previous injection port (7a) is together, so the volume is 4000 times and 6 pascals. When compressed, the volume is jetted at about 100 times. Then, the high pressure washer that injects 50 cc per minute needs 12,500 calories, and the power consumption of the instantaneous water heater is about 1000 w.

  Therefore, when the injection port (7a) is changed from φ1 to φ4 and water is injected at 5 liters per minute, 20,000 liters per minute is injected at atmospheric pressure with steam, 1.25 million calories are required, and power consumption is 20 kW. is necessary. In other words, the hole of the injection port (7a) that emits steam requires 20 kW of power when φ4, and 1 kW of power when φ1.

  This high-pressure injector (7) was modeled after cleaning an automobile engine room. In the past, boilers were used to warm water with gas or oil to make steam, and the steam was injected. By attaching an instantaneous water heater to the high-pressure injector (7), the capacity was reduced and the injection port (7a) Since steam is made immediately before, the high-pressure hose (7b) becomes lighter and the temperature does not cool when passing through the hose.

  When used as steam, it can be used for medical sterilization. At present, there are fewer sterilization operations in hospitals, but medical wastes are disposed of by medical waste handlers. However, if it can be sterilized with steam, it can be disposed of as ordinary waste, and dangerous items should be sterilized on the spot to make them harmless.

1 tube 2 bobbin 2a magnetic flux 3 coil 3a power supply 3b high frequency generator 3c ground 4 outer plate 5 thermostat 5a thermometer 6 faucet 7 high pressure injector 7a injection port 7b high pressure hose 7c trigger

Claims (2)

The magnetic tube (1) has a coil (3) wound around a bobbin (2),
A plurality of outer plates (4) are provided so as to surround the bobbin (2),
The outer plate (4) is made of a substantially concave magnetic material,
The outer plate (4) is arranged in a radial pattern around the tube (1),
The coil (3) has a high-frequency generator (3b) interposed from a power source (3a). The magnetic tube (1) has a plurality of coils (3) wound around a bobbin (2),
A plurality of outer plates (4) are provided so as to surround the bobbin (2),
The outer plate (4) is made of a substantially concave magnetic material,
The outer plate (4) is arranged in a radial pattern around the tube (1),
In the instant water heater, the thermostat (5) energizes each coil (3) from the power source (3a) via the high frequency generator (3b).

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