JP4194906B2 - Human body local cleaning equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a human body local cleaning device that is used for cleaning by heating water supplied from a water supply source to an appropriate temperature water having a predetermined temperature.

A conventional human body local cleaning device is generally equipped with a hot water storage type hot water device that heats and keeps a constant amount of water stored in a tank at a predetermined set temperature (for example, about 40 ° C.) with a heater ( Patent Document 1). On the other hand, although it was a small number, there was one provided with an instantaneous heating type hot water apparatus that instantaneously heats the supplied water and supplies hot water at an appropriate temperature (see Patent Document 2). FIG. 20 shows a hot water device of a conventional human body local cleaning device described in Patent Document 2. A hot water device 109 shown in FIG. 20 includes a metal heating tank 110 formed in a bottomed cylindrical shape and a synthetic resin hot water storage tube 111 formed in a hollow cylindrical shape, and the heating tank 110 is placed in the hot water storage tube 111. The heating tank 110 is housed so that it has a hot water storage part 111 a at its upper part, and the opening end side of the heating tank 110 is fitted into one opening part of the hot water storage cylinder 111, and the heating tank 110 is opened to the peripheral edge on the opening end side. The heating tank 110 and the hot water storage cylinder 111 are communicated with each other through the hole 112. Subsequently, after the hollow cylindrical ceramic heater 113 having an electric heating element formed by printing on the surface or between two layers of ceramic substrates is loosely connected to a water supply line (not shown), One opening portion of the hot water storage cylinder 111 is closed by a flange portion of the ceramic heater 113, and the other opening portion of the hot water storage cylinder 111 is formed using a box body 116 having a float switch 114 and a vacuum switch 115. The hot water is discharged from a hot water discharge pipe 117 fixed to the box 116. A temperature sensor 118 for detecting the temperature of the hot water heated by the ceramic heater 113 is attached above the through hole 112 opened in the heating tank 110.
Japanese Patent Publication No. 2-3860 (page 2-4, Fig. 4) Japanese Utility Model Publication No. 1-47575 (page 2-3, FIG. 1)

  However, in the conventional hot water storage type hot water device as in Patent Document 1, the amount of hot water is limited, so that hot water at a set temperature is supplied until the amount of discharged water exceeds the amount of hot water stored, but the amount of hot water exceeded. When used for a long time, the temperature of the hot water begins to gradually decrease, and hot water with a temperature lower than the set temperature is discharged. There was a problem of giving discomfort to the user due to the decrease. In addition, since there is a hot water tank, the size of the apparatus becomes large, and since it is not known when it is used, it is kept warm day and night, and its heat loss occupies a large part of the total power consumption, resulting in a very high running cost.

Therefore, in the human body washing apparatus provided with the conventional instantaneous heating type hot water apparatus 109 as in Patent Document 2, the water flowing into the heating tank 110 through the inner peripheral surface of the ceramic heater 113 in the hot water apparatus 109 is removed. Since the electric heating element of the ceramic heater 113 can instantaneously heat to the set temperature, there is an advantage that hot water at a constant temperature can be discharged for a long time to eliminate hot water. However, a breaker for overcurrent protection is installed in a general household, and in order to prevent the breaker from tripping, it is necessary to set the heater capacity to about 1200 W or less at 100 VAC, for example, when using 40 ° C hot water, In consideration of the winter season when the temperature of water entering the hot water device is low, the water temperature is increased to 40 degrees to limit the water discharge amount to about 400 cc or less per minute. On the other hand, in the instantaneous heating type hot water apparatus having the above-described configuration, the smaller the diameter of the hollow cylindrical ceramic heater 113, the more difficult the manufacture becomes, and the smaller the heat transfer area, there is a limit to the diameter. A water storage part in which water accumulates in a water channel portion such as the heating tank 110 having a volume corresponding to the size of the ceramic heater 113 or the hot water storage cylinder 111 is formed. For example, even if it is about 200 cc, if the water storage part is formed, the heat capacity becomes large, and water is accumulated in the water storage part that is not small with respect to the water discharge amount of about 400 cc or less per minute. In addition to the time required for the water discharge, the flow passage area of the inner and outer circumferences of the ceramic heater 111 is large with respect to the amount of water discharged, so that the flow rate is reduced and the heat transfer rate is deteriorated. It was. In addition, since the water storage section is formed, the control responsiveness is poor, and there is a problem that a temperature change occurs due to difficulty in instantaneously changing the set temperature during cleaning. And when the energization rate of the heater circuit is controlled, there is a problem that the lighting in the toilet room flickers and is uncomfortable.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a human body local cleaning device capable of finely controlling the temperature and suppressing occurrence of temperature fluctuations that are uncomfortable during the local cleaning operation. To do.

In order to solve the above problems, the present invention provides a heating means, a water inlet for entering water, a hot water outlet for discharging hot water heated by the heating means, and the heating means that communicates the water inlet and the hot water outlet. A water heater configured with a water channel arranged in thermal contact with the water, a water supply unit for supplying water to the water inlet, and a flow rate detection unit for detecting a flow rate of water supplied from the water supply unit to the water inlet And a washing nozzle communicating with the hot water outlet, a temperature detecting means for detecting the hot water temperature, and a controller for controlling the heating means, the heating means having two or more parallel electric heaters. The controller is configured in parallel with the electric heater based on the tapping temperature detected by the temperature sensing means while the water continuously supplied from the water supply unit flows from the water channel to the tapping outlet. Energizing each of the circuits It was variable, but which is adapted to heat to a suitable temperature by varying the energization amount of the heating means based on the flow rate signal of the flow rate detection unit.

According to the above invention, since the electric heater is configured in a plurality of circuits in parallel, the electric capacity of the electric heater per circuit is reduced. As a result, since the energization rate of one circuit having a small capacity is controlled, the control resolution is drastically improved. Further, in the case of a cycle control method for controlling the energization rate to the electric heater for a certain period of time, it is only necessary to turn on / off the cycle of a small electric capacity heater. In addition, when electricity is supplied only during use, hot water can be discharged, and a water storage part is not required. As a result, there is no heat loss during hot water storage, thus saving energy and realizing a compact device.

The human body local cleaning device of the invention can perform fine temperature control, and can suppress the occurrence of temperature fluctuation that becomes uncomfortable during the local cleaning operation. In addition, when controlling the energization rate to the electric heater, it is possible to suppress voltage fluctuations in the power supply line and prevent flickering in the bathroom interior lighting. Moreover, if electricity is supplied only during use, the hot water can be discharged, and energy saving and a compact device can be realized.

The first invention includes a heating means, a water inlet for entering water, a hot water outlet for discharging hot water heated by the heating means, and a thermal contact with the heating means through the water inlet and the hot water outlet. A water heater configured to include a water channel, a water supply unit that supplies water to the water inlet, a flow rate detection unit that detects a flow rate of water supplied from the water supply unit to the water inlet, and the hot water outlet A cleaning nozzle that communicates with the water, a temperature detection means that detects the temperature of the tapping water, and a control unit that controls the heating means. The heating means includes two or more parallel electric heaters and is integrally configured. And the control unit supplies each of the parallel circuits of the electric heater to each of the parallel circuits of the electric heater based on the tapping temperature detected by the temperature detecting means while the water continuously supplied from the water supply unit flows from the water channel to the tapping outlet. The flow rate can be changed and the flow rate It is intended to heat to a suitable temperature by varying the energization amount of the heating means based on the flow rate signal of the knowledge unit. And since the electric heater of a heating means is comprised in multiple circuits in parallel, the electric capacity of the electric heater per circuit becomes small. As a result, since the energization rate of one circuit having a small capacity is controlled, the control resolution is drastically improved, and fine control with high temperature accuracy is possible. In addition, in the case of a cycle control method for controlling the energization rate to an electric heater for a certain period of time, since a small electric capacity heater cycle can be turned on and off, voltage fluctuations in the power supply line can be suppressed, and as a result While suppressing generation | occurrence | production of the temperature fluctuation which becomes unpleasant at the time of a local cleaning driving | operation, the flickering etc. of toilet room lighting can be prevented. The heating means is heated only during use when washing water is continuously supplied from the water supply section and flows from the water channel to the outlet, so that hot water can be discharged if energized only during use. This eliminates the loss of heat and saves energy, and enables a compact device. In particular, when the human body local cleaning device is in operation, the flow rate detection unit that detects the flow rate of water supplied from the water supply unit to the water inlet and the energization amount of the heating unit based on the flow rate signal of the flow rate detection unit are varied. When the cleaning flow rate is changed during cleaning according to the user's preference, the energization amount of the hot water device is instantaneously determined according to the flow rate change by the control unit based on the flow rate signal of the flow rate detection unit. Undershoot can be kept to a minimum, and there is no worry of cold water coming out and feeling uncomfortable or hot water coming out.

  In the second invention, in particular, the heating means of the hot water apparatus of the first invention is constituted by a ceramic heater in which a heating element that generates Joule heat by electric power is sandwiched between a pair of ceramic plates such as alumina, and the heating means Since the electric heater of the above is a heating element, it is equipped with a ceramic heater with a high heating rate made of alumina with high thermal conductivity as an insulator, so the temperature rise and temperature control response of hot water can be instantaneous At the same time, since it is possible to configure a water channel in which water directly contacts the ceramic heater, it is possible to improve the control responsiveness and the temperature rising rate at the start of the cleaning operation, thereby improving the thermal efficiency and suppressing the occurrence of temperature fluctuations.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 is a schematic perspective view of a hot water apparatus according to Embodiment 1 of the present invention, FIG. 2 is a left side sectional view, and FIG. 3 is a right side sectional view. 1 to 3, the hot water apparatus main body 1 includes a ceramic heater 2 that is a flat plate heating means disposed substantially at the center, and a silicon agent 3 applied to the contact surface to improve heat conduction, and sandwich the ceramic heater 2. It is comprised with a pair of metal heat-exchange parts 4 arranged so that it may do. The ceramic heater 2 is a unit in which a metal heating element 5 that generates Joule heat by supplying electric power is sandwiched between a pair of rectangular ceramic plates 6 made of alumina or the like, and is fired and integrated. A connected lead wire 7 is provided. In addition, meandering water passages 9 having a plurality of bent portions 8 are formed in a substantially central cross section parallel to the ceramic heater 2 of each heat exchanging portion 4, and a water inlet 10 opened at an end face of the heat exchanging portion 4 and The outlet 11 is communicated with. And the hot water outlet 11 of one heat exchanging part 4 and the other water inlet 10 are connected by a pipe 12.

  With the above configuration, when water is introduced into the water inlet 10 of the one heat exchanging section 4 and electric power is supplied from the lead wire 7 of the ceramic heater 2, the heat generated by the heating element 5 is generated by the ceramic plate 6 and the silicon agent 3. The heat is transferred to the heat exchange section 4 and transferred to the water flowing in from the water inlet 10, and the water is heated while flowing in series from the meandering water passage 9 of one heat exchange section 4 to the other meandering water passage 9 via the pipe 12. In a short period of time passing through the hot water apparatus main body 1, it becomes hot water and flows out from the hot water outlet 11. Therefore, since the hot water main body 1 is an instantaneous heating type hot water apparatus that instantaneously heats water when water is continuously supplied from the water inlet 10, it can discharge hot water at a constant temperature for a long time without interruption. Further, since the wall of the meandering water channel 9 is a heat transfer surface, a heat transfer area can be secured widely along its length, and the cross-sectional area of the meandering water channel 9 can be reduced and the flow velocity can be increased. Therefore, it is possible to increase the load and reduce the size with high thermal efficiency and simple configuration. In addition, since there is no water storage part and the heat capacity of water is small, the temperature rise rate from the start of using the hot water device until the hot water of the proper temperature is actually discharged is fast, and the user wants to change the hot water temperature or the flow rate. The control responsiveness in the case of adjusting by providing a control unit is also improved.

  In the present embodiment, a flat ceramic heater is used as the flat heating means, but various applications such as a sheathed heater and a mica heater are conceivable.

(Embodiment 2)
FIG. 4 is a schematic perspective view of a hot water apparatus according to Embodiment 2 of the present invention. Components having the same reference numerals as those in FIGS. 1 to 3 are corresponding components, and detailed description thereof is omitted. In the figure, each of the pair of heat exchanging portions 4 is formed of a resin material, and the meandering water channel 9 is configured such that the surface on the ceramic heater 2 side is opened so that water directly contacts the ceramic heater 2 and heat exchange is performed. It is sealed by an O-ring 13 provided in the part 4 so that water does not leak.

  With the above configuration, when water is introduced into the water inlet 10 and electric power is supplied to the ceramic heater 2, the ceramic heater 2, which is a flat plate heating means, is made of alumina having a high thermal conductivity because it is an insulator. The temperature rise rate is fast, and as a result, the temperature rise and the temperature control response of the hot water can be made instantaneously, and the water flowing in from the water inlet 10 directly contacts the ceramic heater 2 in the meandering water channel 9, so that the temperature rise rate is further increased. Responsiveness can be improved, and thermal efficiency can be improved. At this time, since the water and the heating element 5 are insulated, it can be operated without worrying about leakage or short circuit.

(Embodiment 3)
FIG. 5 is a schematic perspective view of a hot water apparatus according to Embodiment 3 of the present invention, and FIG. 6 is a plan sectional view. Components having the same reference numerals as those in FIGS. 1 to 4 are corresponding components, and detailed descriptions thereof are omitted. In the figure, reference numeral 14 denotes a catalytic combustion burner provided as a flat plate heating means for uniformly flowing a fuel pipe 15 for supplying a hydrocarbon fuel such as propane, butane or methanol and a fuel supplied from the fuel pipe 15. On the metal plate 17, a flat fuel passage 18 that includes a volume portion 16, two metal plates 17 bent in a corrugated shape inside, and extends upward from the volume portion 16 below the catalyst combustion burner 14. It comprises a catalytic combustion part 19 formed by applying a catalyst (not shown) and an exhaust port 20 for discharging combustion exhaust gas. On both sides of the fuel passage 18, a pair of metal heat exchanging parts 4 are bonded so that heat can be easily transferred to the fuel passage 18 to constitute a hot water device.

  With the above configuration, the fuel supplied from the fuel pipe 15 passes through the volume portion 16 and enters the fuel passage 18 sandwiched between the pair of heat exchange portions 4. The fuel that has entered the fuel passage 18 comes into contact with the catalytic combustion section 19 while passing through the gap between the metal plates 17, undergoes an oxidation reaction with oxygen in the air due to the action of the catalyst, generates heat, and forms combustion exhaust gas from the exhaust port 20. Exhausted. At this time, the heat generated in the catalytic combustion unit 19 is transmitted to the heat exchanging unit 4 through the metal plate 17 and the wall surface of the fuel passage 18, and the water introduced from the water inlet 10 is provided at substantially the center of the heat exchanging unit 4. Since the water is transmitted while flowing through the meandering water channel 9 and becomes hot water having an appropriate temperature and discharged from the hot water outlet 11, a compact and simple instantaneous hot water apparatus using a fuel such as a hydrocarbon fuel can be realized. In addition, since catalytic combustion is used, the oxidation reaction proceeds without increasing the temperature so much that nitrogen oxides are not generated at a high temperature, thereby providing a clean hot water apparatus for combustion exhaust gas.

(Embodiment 4)
7 is a schematic perspective view of a hot water apparatus according to Embodiment 4 of the present invention, FIG. 8 is a left side sectional view, and FIG. 9 is a right side sectional view. Components having the same reference numerals as those in FIGS. 1 to 6 are corresponding components, and detailed description thereof is omitted. In the figure, a water supply source (not shown) and the water inlet 10 of each of the pair of resin heat exchange parts 4 are connected to a water supply pipe 22 having a branch part 21, and two hot water outlets 11 are connected to a hot water pipe 24 having a junction part 23. It is connected. The water inlet 10 and the hot water outlet 11 of each heat exchanging part 4 are provided close to each other, and the meandering water channel 9 that communicates with the surface of the ceramic heater 2 is opened, and the inlet 25 near the water inlet 10 and the outlet. The outlet 26 in the vicinity of the gate 11 is adjacent and travels in parallel, and then connected via the bent portion 8. The open meandering water channel 9 is integrally sealed and secured by a copper plate 27 as a heat transfer plate via an O-ring 13 so as not to leak water, and the pair of heat exchanging parts 4 integrated with the copper plate 27 provides a meandering water channel 9. The ceramic heater 2 having a smaller area is pressed and sandwiched through a thin rubber sheet 28 having excellent thermal conductivity to constitute a hot water device.

  With the above configuration, the water supplied to the water supply pipe 22 is divided almost evenly at the branching portion 21 and flows into the two water inlets 10. The hot water heated by the heat generated by the ceramic heater 2 while passing through the plurality of bent portions 8 through the inflow passage 25 is also caused by a temperature difference between the water in the inflow passage 25 adjacent to the outflow passage 26 of the meandering water passage 9. Since heat is exchanged, the low-temperature water that has entered the meandering water channel 9 is warmed early, and the temperature difference in the meandering water channel 9 is alleviated. This small temperature difference is further mitigated by the diffusion of heat in the cross-sectional direction of the copper plate 27 having a very high thermal conductivity, and as a result, the temperature distribution on the surface of the ceramic heater 2 becomes uniform. It is possible to prevent the ceramic heater from being broken. Further, even if the heating element 5 which is the heating part of the ceramic heater 2 is formed to the full end of the ceramic heater 2, the meandering water channel 9 is formed in a large area so as to cover the ceramic heater 2. Therefore, the heat flow is not absorbed by water but is transmitted to the hot water device constituting member such as the heat exchanging section 4 and the end of the hot water device is prevented from becoming partly abnormally high temperature to improve the thermal efficiency and safety. it can. Further, since the supply water is divided by the branch portion 21 provided in the water supply pipe 22 upstream of the meandering water channel 9, water can be supplied almost evenly to each of the pair of heat exchange portions 4, and both surfaces of the ceramic heater 2 can be supplied. Since the thermal conditions are equal, no temperature gradient is generated between both surfaces, the ceramic heater 2 is not broken by thermal distortion, and the reliability can be improved. Further, when the flat plate heating means is made of metal using the catalyst burner 14 shown in FIG. 5 or the like, warping due to thermal distortion occurs, which can also be prevented.

(Embodiment 5)
10 is a schematic perspective view of a hot water apparatus according to Embodiment 5 of the present invention, FIG. 11 is a plan sectional view, and FIG. 12 is a right side sectional view. Components having the same reference numerals as those in FIGS. 1 to 9 are corresponding components, and detailed description thereof is omitted. In the figure, the hot water apparatus main body 1 has one resin heat exchanging part 4 having a pair of water inlets 10 and outlets 11, and only an end part having a lead wire 7 in the approximate center of the heat exchanging part 4. And a ceramic heater 2 which is a flat plate-like heating means inserted in a watertight manner. Inside the heat exchanging section 4, there are an inflow path 25 passing from the water inlet 10 to the end of the ceramic heater 2, and an inflow path 25 A branch portion 21 provided downstream and branching the water channel into both sides of the ceramic heater 2 and a surface on the ceramic heater 2 side which is disposed on both sides of the ceramic heater 2 are opened so that water directly contacts the ceramic heater 2. A pair of meandering water channels 9, a joining portion 23 for joining the two at the end of the two meandering water channels 9, and an outlet 1 provided at the end facing the inflow passage 25 of the ceramic heater 2. And a outlet passage 26 for guiding the hot water. The hot water apparatus main body 1 is fixed so that the ceramic heater 2 is substantially vertical, and the water inlet 10 is the lowermost end, and the inflow path 25, the branching section 21, the meandering water path 9, the merging section 23, the outflow path 26, It is located upward as it goes upstream, the tap 11 is arranged at the uppermost end, and the meandering waterway 9 is also configured so that the downstream side does not go downward.

  With the above configuration, heat is transferred while directly contacting the ceramic heater 2 made of alumina, which has a high thermal conductivity, and has a high heating rate, so that the temperature rise and temperature control response can be instantaneously performed. In addition, the thermal efficiency can be improved. Further, since the water flow sequentially goes upward from the water inlet 10 through the meandering water channel 9 to the hot water outlet 11, even if bubbles are generated due to separation of dissolved oxygen due to an increase in water temperature, the water flow is discharged to the hot water outlet 11 by buoyancy. Therefore, the hot water apparatus can be stably operated without disturbing the hot water flow due to bubbles, and the heat transfer rate and the thermal efficiency can be prevented from being lowered due to the bubbles in the heat exchange unit 4. In addition, the large diameter and integrated bubbles stop in the meandering water channel 9, the heat transfer coefficient is suddenly lowered at that portion, and a local thermal shock is not generated, and the life of the ceramic heater 2 is broken. It can prevent that it falls remarkably and can improve the reliability of a flat heating means. Furthermore, since water is allowed to flow in parallel on both surfaces of the ceramic heater 2, a temperature gradient is not generated between both surfaces of the ceramic heater 2, and breakage due to thermal strain can be prevented, and the reliability of the flat plate heating means can be improved.

(Embodiment 6)
FIG. 13 is a schematic perspective view of a hot water apparatus according to Embodiment 6 of the present invention, and FIG. 14 is a schematic configuration diagram. Components having the same reference numerals as those in FIGS. 1 to 12 are corresponding components and will not be described in detail. In the figure, a water supply source (not shown) and the water inlet 10 of each of the pair of resin heat exchange parts 4 are connected to a water supply pipe 22 having a branch part 21, and two hot water outlets 11 are connected to a hot water pipe 24 having a junction part 23. The hot water discharge pipe 24 connected and downstream of the junction 23 is provided with a thermistor 29 for detecting the hot water temperature. The hot water apparatus main body 1 is arranged so that the ceramic heater 2 is substantially vertical, and the meandering water channel 9 communicating the water inlet 10 and the hot water outlet 11 of each heat exchanging section 4 is sequentially from the water inlet 10 to the hot water outlet 11. It forms so that it may go upwards, and the water inlet 10 is the structure provided in the substantially lowermost end of the hot-water apparatus main body 1, and the hot water outlet 11 is provided in the substantially uppermost end. Then, two heating elements 30a and 30b are formed in parallel so that the heating element inside the ceramic heater 2 becomes two electric heater circuits of substantially the same capacity, and one end of each of the two circuits is one. The other end is connected to the common lead wire 31 and the other circuit is connected to a different lead wire 32a and lead wire 32b. The common lead wire 31, the lead wire 32a, and the lead wire 32b are connected to a control unit 33 that controls the energization ratios of the two heating elements 30a and 30b.

  According to the above configuration, the meandering water passage 9 is sequentially provided upward from the water inlet 10 to the hot water outlet 11, so that even if bubbles are generated, the water is discharged and discharged to the hot water outlet 11. Can be stably operated, and a decrease in heat transfer coefficient and a decrease in heat efficiency due to bubbles in the heat exchange section 4 can be prevented. In addition, local thermal shock due to the increased diameter and integrated bubbles does not occur, and the ceramic heater 2 can be prevented from breaking and the reliability of the flat plate heating means can be improved. Further, since water is allowed to flow in parallel on both surfaces of the ceramic heater 2, it is possible to prevent breakage due to thermal distortion and to improve the reliability of the flat plate heating means. Further, since the heating element 30a and the heating element 30b are configured in parallel as two electric heaters having the same capacity, the electric capacity of the electric heater per circuit is smaller than the required total electric capacity by the reciprocal of the number of circuits. Become. As a result, the current-carrying rate of one circuit with a small capacity is controlled, so the control resolution is dramatically improved, finer temperature control is possible, and the heat shock is reduced, extending the life of the electric heater and being reliable. Can be improved. In the case of a cycle control method in which the number of cycles is adjusted within a certain control period and the current supply rate to the electric heater is controlled by repeating the control period, the cycle of a small electric capacity heater can be turned ON / OFF. As a result, the voltage fluctuation of the power supply line can be suppressed, and as a result, the flickering of the lighting can be prevented and the occurrence of the temperature fluctuation that is uncomfortable for the user of the hot water apparatus can be suppressed.

  Here, the configuration is such that two electric heaters of the same capacity are used, but if the number of circuits is larger than that, the resolution is further improved, and the same effect can be obtained. Further, it is obvious that the same effect can be obtained by the control method without using electric heaters having substantially the same capacity.

(Embodiment 7)
FIG. 15 is an enlarged cross-sectional view of a main part of the hot water device according to Embodiment 7 of the present invention. In the figure, reference numeral 9 denotes a part of a meandering water channel having a rectangular cross section, and a torsion plate 34 is inserted therein as a turbulent flow promoting body.

  In the above configuration, the main flow of the water flow flowing through the meandering water channel 9 is swirled by the action of the torsion plate 34 and the heat transfer rate from the wall surface of the meandering water channel 9 to the water is improved, so that the heat transfer area can be reduced, and the heat capacity density can be reduced. A large hot water heater can be realized using a large flat plate heating means.

(Embodiment 8)
FIG. 16: is a principal part expanded sectional view of the hot water apparatus of Embodiment 8 of this invention. In the figure, reference numeral 9 denotes a part of a meandering water channel having a rectangular cross section, and a coiled wire 35 wound in a rectangular shape is inserted therein as a turbulent flow promoting body.

  In the above configuration, the flow of water flowing through the meandering channel 9 is disturbed by the action of the wire 35 and the heat transfer rate from the wall surface of the meandering channel 9 to the water is improved, so that the heat transfer area can be reduced. Using a flat plate heating means with a large heat capacity density, a high-load compact hot water apparatus can be realized.

  Here, the twist plate 34 and the wire 35 are used as the turbulent flow promoting body, but a protrusion (rectangle, trapezoid, saw blade, triangle) provided on the heat transfer surface in order to disturb the flow near the heat transfer surface, A spiral blade for swirling the main flow, a disk or an annulus arranged at regular intervals in a pipe line to disturb the main flow may be used.

(Embodiment 9)
FIG. 17 is a schematic configuration diagram of a human body local cleaning device using the hot water device according to Embodiment 9 of the present invention. The components having the same reference numerals as those in FIGS. 1 to 16 are the corresponding components and will not be described in detail. In the figure, reference numeral 36 denotes an instantaneous water heater main body 1 having a meandering water channel 9 having a plurality of bent portions 8 arranged in thermal contact with both surfaces of the ceramic heater 2, a water supply unit 37, and a washing nozzle. 38, the water supply unit 37 and the hot water device main body 1 are connected by a water supply pipe 22 having a flow rate detection unit 39 for detecting the flow rate of the supplied water, and the hot water device main body 1 is cleaned. The nozzle 38 is connected to the hot water discharge pipe 24. The control unit 40 and the flow rate detection unit 39 are connected by a flow rate signal line 41, and the control unit 40 can vary the energization amount to the ceramic heater 2 of the water heater main body 1 based on the flow rate signal of the flow rate detection unit 39. It is like that.

  With the above configuration, when water is continuously supplied from the water supply pipe 37 and electric power is supplied from the lead wire 7 of the ceramic heater 2, the water flowing into the hot water main body 1 is heated while flowing through the meandering water channel 9, and instantly Since it becomes hot water of appropriate temperature and is sprayed from the washing nozzle 38 through the hot water discharge pipe 24, hot water can be discharged if it is energized only when it is used without the need for a hot water storage tank and a water storage part. In addition, a compact human body local cleaning device 36 can be realized. In addition, since it is an instantaneous heating type hot water device, local washing with hot water can be performed continuously for a long time without restriction on the amount of hot water, and blood circulation in the anus is improved, which is effective in preventing sputum and promoting treatment. . Furthermore, since it is equipped with a hot water device that is compact and has a small heat capacity, there is no problem such as the occurrence of post-boiling, and even if it is used intermittently, there is no concern that hot water will be generated and burns will be safe. In addition, since there is no water reservoir, the control response is good, and the set temperature can be changed instantaneously during cleaning. And since it has the flow rate detection part 39 and the control part 40 which changes the electricity supply amount which is the heating amount of the hot water apparatus main body 1 based on a flow rate signal, in a human body local washing | cleaning apparatus, a washing | cleaning flow volume during washing | cleaning by a user preference However, since the heating amount of the hot water device is determined instantaneously according to the flow rate change based on the flow rate signal of the flow rate detection unit, the overshoot and undershoot of the tapping temperature should be minimized. It is safe without worrying about the feeling of discomfort due to low temperature water coming out or burning the hot water.

(Embodiment 10)
FIG. 18 is a schematic configuration diagram of a human body local cleaning device using the hot water device according to Embodiment 10 of the present invention. Components having the same reference numerals as those in FIGS. 1 to 17 are corresponding components, and detailed description thereof is omitted. In the figure, the control unit 40 includes a first temperature setting unit 42, a second temperature setting unit 43, a first timer unit 44, and a second timer unit 45, and the ceramic heater 2 that is the heating amount of the hot water device. The first energizing amount is varied, the first preset temperature determined by the first temperature setting unit 42 is discharged for the first set time determined by the first timer unit 44, and the second temperature setting unit The washing water having the second set temperature determined in 43 can be discharged for the second set time determined in the second timer unit 45.

  With the above configuration, the amount of heating of the hot water device is such that the temperature of the cleaning water of the human body local cleaning device 36 is automatically switched between the high first set temperature and the low second set temperature for each set time. Since the amount of electricity supplied to the ceramic heater 2 can be controlled and the hot water can be discharged, it is possible to stimulate the part to be cleaned to be warmed or cooled, to relieve the anemia of stasis, and to prevent sputum and promote treatment.

1 is a schematic perspective view of a hot water device according to Embodiment 1 of the present invention. Cross-sectional view of the left side of the water heater Right side cross-sectional view of the hot water system Schematic perspective view of a hot water device in Embodiment 2 of the present invention Schematic perspective view of the hot water device in Embodiment 3 of the present invention Plan sectional view of the water heater Schematic perspective view of the hot water device in Embodiment 4 of the present invention Cross-sectional view of the left side of the water heater Right side cross-sectional view of the hot water system Schematic perspective view of the hot water device in Embodiment 5 of the present invention Plan sectional view of the water heater Right side cross-sectional view of the hot water system Schematic perspective view of a hot water device in Embodiment 6 of the present invention Schematic configuration diagram of the hot water system The principal part expanded sectional view of the hot water apparatus of Embodiment 7 of this invention The principal part expanded sectional view of the hot water apparatus of Embodiment 8 of this invention Schematic configuration diagram of a human body local cleaning apparatus using the hot water apparatus according to Embodiment 9 of the present invention Schematic configuration diagram of a human body local cleaning apparatus using the hot water apparatus according to Embodiment 9 of the present invention Schematic configuration diagram of a conventional human body local cleaning device Schematic configuration diagram of a conventional human body local cleaning device

Explanation of symbols

1 Hot water main unit 2 Ceramic heater (heating means)
6 Ceramic plate 9 Meandering waterway (waterway)
10 Water inlet 11 Water outlet 29 Thermistor (temperature detection means)
30a, 30b Heating element (electric heater)
37 Water supply unit 38 Washing nozzle 39 Flow rate detection unit 40 Control unit

Claims (2)

A heating means, a water inlet for entering water, a hot water outlet for discharging hot water heated by the heating means, and a water channel arranged in contact with the heating means through the water inlet and the hot water outlet A water heater configured to supply water to the water inlet, a flow rate detector for detecting a flow rate of water supplied from the water feeder to the water inlet, and a washing nozzle communicating with the outlet And a temperature detecting means for detecting a tapping temperature and a control part for controlling the heating means, wherein the heating means has two or more parallel electric heaters , and is integrated with the control part. Is to vary the energization rate to each of the parallel circuit of the electric heater based on the tapping temperature detected by the temperature detecting means while the water continuously supplied from the water supply unit flows from the water channel to the tapping outlet, Flow rate signal of the flow rate detector Human private cleaning apparatus for heating a variable to an appropriate temperature the energization amount of the heating means based on. The human body local part according to claim 1, wherein the heating means is constituted by a ceramic heater formed by sandwiching a heating element that generates Joule heat by electric power between a pair of ceramic plates such as alumina, and the electric heater of the heating means is the heating element. Cleaning device.

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