JP4407687B2 - 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, there has been an apparatus equipped 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 Japanese Utility Model Publication No. 1-47575

  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 hot water begins to gradually drop, and hot water with a temperature lower than the set temperature is discharged. There was a risk of discomfort to the person.

  Accordingly, there has been a problem that when washing a human body equipped with a hot water storage type hot water apparatus, the washing time cannot be satisfactorily washed with appropriate temperature water unless the washing time is shortened and used intermittently.

  In addition, there is a problem that the size of the equipment will increase due to the presence of a hot water tank, and since it is not known when it will be used, it must be energized day and night, and heat loss due to hot water storage accounts for a large part of the total power consumption. There was a problem that the cost would be very high.

  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, Considering the case of the winter when the temperature of water entering the hot water device is low, the water temperature is increased by 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, the volume of the heating tank 110 increases due to the dimensions of the hollow cylindrical ceramic heater 113, making it difficult to reduce the size of the apparatus and creating a water reservoir, resulting in poor control response and instantaneous set temperature during cleaning. There was a problem that it was difficult to change.

  SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide a small-sized instantaneous heating hot water apparatus with a small heat capacity, and to provide an energy saving and compact human body local cleaning apparatus.

  In order to solve the above-mentioned problems, the present invention provides a flat plate heating means comprising 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 both sides of the flat plate heating means. The flat plate heating means is partly a road wall so that the flowing water is directly heated, from the substantially lowermost water inlet to the uppermost water outlet. A hot water device comprising a heat exchange part of a resin material forming a meandering water channel, a water supply part to the meandering water channel, and a cleaning nozzle communicated with the outlet side of the meandering water channel.

  According to the above invention, the heat capacity is small, high responsiveness is obtained, the rise to the desired hot water temperature is good, the usability as a human body local cleaning device can be improved, and the hot water is continuously used for a long time. This makes it possible to perform local cleaning, save energy and reduce energy consumption, and achieve compactness.

  The human body local cleaning apparatus of the present invention can realize a small instantaneous heating hot water apparatus having a small heat capacity, and an energy saving and compact human body local cleaning apparatus can be obtained. In addition, the instantaneous heating method enables local washing with hot water continuously for a long time, improves blood circulation in the anal region, and is effective in preventing sputum and promoting treatment.

1st invention is arrange | positioned on the both sides of the flat plate heating means which consists of a ceramic heater which formed the heat generating body which generate | occur | produces a Joule heat with electric power between a pair of ceramic plates, such as an alumina, This flat plate heating means is partly a wall so that the flowing water is directly heated, and a meandering water channel is formed from the substantially lowermost inlet to the uppermost outlet of the flat plate heating means. A hot water device comprising a heat exchange part of the resin material, a water supply part to the meandering water channel, and a washing nozzle connected to the outlet side of the meandering water channel, the flat plate heating means of the instantaneous heating type hot water device comprises: The plate-like heating comprises a flow rate detector for detecting the flow rate of water supplied from the water supply unit to the water inlet, and a temperature detection means for detecting a tapping temperature. Heating means A first temperature setting unit and a second temperature setting unit that vary the temperature, a first timer unit that discharges wash water at the first set temperature determined by the first temperature setting unit for a first set time, and the second A control unit having a second timer unit that is determined by the temperature setting unit and discharges wash water having a second set temperature lower than the first set temperature for a second set time, the flow rate signal of the flow rate detection unit and the temperature The temperature of the cleaning water is instantaneously varied by controlling the heating amount of the flat plate heating means by the temperature signal of the detection means .

  The meandering water channel is disposed on both sides of a plate-like heating means made of a ceramic heater formed by sandwiching a heating element between a pair of ceramic plates such as alumina, and is insulated by a configuration in which flowing water is directly heated. Heat is transferred while directly contacting a ceramic heater with a high thermal conductivity, which is made of alumina with high thermal conductivity, so that the temperature of the hot water can be instantaneously increased and the temperature control response can be improved. I can plan.

  Further, the water flow passes through the meandering water channel from the water inlet through the configuration of the water heating device comprising the heat exchange part that forms the meandering water channel from the substantially lowermost water inlet to the uppermost water outlet of the flat plate heating means. Since it gradually goes up to the tap, even if bubbles are generated due to the separation of dissolved oxygen due to an increase in the water temperature, it is discharged and discharged to the tap by buoyancy. And the hot water apparatus can be operated stably, and the decrease in heat transfer rate and the decrease in thermal efficiency due to the bubbles in the heat exchange section are prevented.

  In addition, the large diameter and integrated bubbles stop in the meandering water channel, the heat transfer coefficient suddenly decreases at that part, and local thermal shock does not occur, and the life of the ceramic heater breaks significantly. It is prevented from lowering, and the reliability of the flat plate heating means is improved.

  Furthermore, since water is allowed to flow in parallel on both sides of the ceramic heater 2, a temperature gradient does not occur between both sides of the ceramic heater 2, and breakage due to thermal strain is prevented, and the reliability of the flat plate heating means is improved.

As a specific example of the hot water device, heat exchange parts are arranged on both sides of the flat plate heating means, and the meandering water channel of the heat exchange part located on both sides of the flat plate heating means has a flat plate shape. It was set as the structure which has the branch part branched to the both sides of a heating means, and the confluence | merging part which joins the said warm water divided to the outlet .

The flat plate heating means is constituted by a plurality of parallel electric heaters, so that the electric capacity of the electric heater per circuit is reduced. As a result, the energization rate of one circuit with a small capacity is controlled, so that the control resolution is dramatically improved and fine temperature control is possible, and the heat shock is also reduced, thus extending the life of the electric heater and reliability. Is 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, voltage fluctuations in the power supply line can be suppressed to a low level. As a result, occurrence of temperature fluctuations that are uncomfortable during the local cleaning operation is suppressed, and flickering in the toilet room lighting is prevented.

  Furthermore, the human body includes a flow rate detection unit that detects the flow rate of water supplied from the water supply unit to the water inlet, and a control unit that varies the heating amount of the flat plate heating means based on the flow rate signal of the flow rate detection unit. When the washing flow rate is changed during washing according to the user's preference during operation of the local washing device, the heating amount of the hot water device is determined instantaneously according to the flow rate change in the control unit based on the flow rate signal of the flow rate detection unit, The overshoot and undershoot of the hot water temperature can be minimized, and it is safe without worrying about the feeling of discomfort due to low temperature water coming out or hot hot water coming out.

  Furthermore, the heating amount of the hot water device is controlled so that the temperature of the cleaning water of the human body local cleaning device is automatically switched between the high first set temperature and the low second set temperature at each set time. Therefore, it is possible to stimulate the part to be cleaned to be warmed or cooled, relieve the anemia of stasis, and prevent sputum and promote treatment.

In the second invention, the flow near the heat transfer surface is disturbed by the provision of the turbulence promoting body in the meandering water channel described in the first invention. Since the heat transfer rate to water is improved, the heat transfer area can be reduced, and a high-load compact hot water apparatus can be realized by using a flat plate heating means having a large heat capacity density.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing embodiments of the present invention, a reference embodiment of a hot water apparatus main body will be described with reference to the drawings.

(Reference Example 1)
1 to 3, the hot water apparatus main body 1 includes a ceramic heater 2 that is a flat plate-like heating means disposed substantially at the center, and a silicon agent 3 applied to a contact surface to improve heat conduction. It is comprised with a pair of metal heat exchange parts 4 arranged so that may be pinched | interposed.

  The ceramic heater 2 is obtained by integrating a metal heating element 5 that generates Joule heat by supplying electric power by sandwiching it between a pair of rectangular ceramic plates 6 made of alumina or the like. The lead wire 7 connected to the 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 apparatus 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 without interruption for a long time.

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 section and the heat capacity of water becomes small, the temperature rise rate from the start of using the hot water device until the hot water of the proper temperature is actually poured out is fast, and if the user wants to change the tapping temperature or the flow rate is changed. The control responsiveness in the case where adjustment is provided by providing a control unit, for example, is also improved.

(Reference Example 2)
7, 8, and 9 show a second embodiment, the components having the same reference numerals as those in FIGS.

  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 the heat exchanging section 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 inflow channel 25 in the vicinity of the water inlet 10. The outlet 26 in the vicinity of the hot water outlet 11 is adjacent to the outlet 26 and proceeds in parallel, and is 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.

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 rate of temperature rise is also fast, and as a result, the temperature rise and temperature control response of hot water can be instantaneous. At this time, since the water and the heating element 5 are insulated, it can be operated without worrying about leakage or short circuit.

(Reference Example 3)
FIGS. 13 and 14 show a third embodiment, the components having the same reference numerals as those in FIGS. 1 to 3 and FIGS. 7 to 9 are corresponding components, and those in the first and second embodiments are used for detailed description.

  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 main body 1 is arranged so that the ceramic heater 2 is substantially vertical, and the meandering water channel 9 that communicates the water inlet 10 and the hot water outlet 11 of each heat exchanging part 4 is sequentially provided 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 heaters of substantially the same capacity, and one end of each of the two circuits is one circuit. 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.

  Further, local thermal shock due to the increased diameter and integrated bubbles is not generated, and the ceramic heater 2 can be prevented from being broken 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.

  Based on the above reference embodiment, an embodiment of the present invention will be described in detail with reference to the drawings. In addition, the thing of the same code | symbol as FIGS. 1-3, FIGS. 7-9, FIG. 13, 14 is a corresponding component, and the detailed description uses the thing of Reference Examples 1-3.

Example 1
First, a hot water apparatus main body is demonstrated with reference to FIG.

  In FIG. 4, the pair of heat exchanging portions 4 are each 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 the heat It is sealed by an O-ring 13 provided in the exchange unit 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.

(Example 2)
5 and 6, reference numeral 14 denotes a catalytic combustion burner provided as a flat plate heating means. The fuel pipe 15 supplies hydrocarbon fuel such as propane, butane or methanol, and the fuel supplied from the fuel pipe 15 is uniformly distributed. A flat fuel passage 18 that has a volume portion 16 for flowing and two metal plates 17 bent into a corrugated plate therein and extends upward from the volume portion 16 below the catalyst combustion burner 14, and a metal plate The catalyst combustion part 19 formed by apply | coating a catalyst (not shown) on 17 and the exhaust port 20 which discharges | emits combustion exhaust gas are comprised. 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 exchange 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 in the approximate center of the heat exchange 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.

(Example 3)
10, 11, and 12, the hot water apparatus main body 1 includes a resin heat exchange part 4 having a pair of water inlets 10 and a hot water outlet 11, and an end having a lead wire 7 substantially at the center of the heat exchange part 4. And a ceramic heater 2 which is a flat plate-like heating means inserted in a watertight manner with only the portion protruding, and an inflow path 25 passing through the end of the ceramic heater 2 from the water inlet 10 inside the heat exchange section 4 A branch portion 21 provided downstream of the inflow passage 25 and branching the water passage into both surfaces of the ceramic heater 2 and a surface on the ceramic heater 2 side opened on both surfaces of the ceramic heater 2 so that water directly contacts the ceramic heater 2. A pair of meandering water channels 9 formed in such a manner, a joining portion 23 for joining the two at the end of the two meandering water channels 9, and a joining portion provided at an end portion facing the inflow passage 25 of the ceramic heater 2. And a outlet passage 26 for guiding the hot water tap hole 11 from 3.

  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 distortion can be prevented, and the reliability of the flat plate heating means can be improved.

Example 4
In the structure shown in FIG. 15, a torsion plate 34 is inserted as a turbulent flow promoting body inside a meandering water channel 9 having a rectangular cross section.

  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.

(Example 5)
In FIG. 16, a coiled wire 35 wound in a rectangular shape is inserted as a turbulent flow promoting body inside a meandering water channel 9 having a rectangular cross section.

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.

  Based on the above hot water apparatus main body, a specific example of a human body local cleaning apparatus will be described in the following embodiments.

(Example 6)
In FIG. 17, reference numeral 36 denotes a human body local cleaning device including the instantaneous hot water device main body 1, the water supply unit 37, and the cleaning nozzle 38 described in the above-described reference embodiment, and the water supply unit 37 and the hot water device main body 1. Is connected by a water supply pipe 22 having a flow rate detection unit 39 for detecting the flow rate of the supplied water.

  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 uses the flow rate signal of the flow rate detection unit 39 and the temperature signal of the thermistor 29, which is a temperature detection means. 2 can be varied.

  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 an 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 there is no water storage part, the control responsiveness is good, and the instantaneous setting temperature can be changed freely 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 instantaneously determined according to the flow rate change by the control unit based on the flow rate signal of the flow rate detection unit, the overshoot of the tapping temperature can be minimized. It is safe without worrying about cold water coming out and feeling uncomfortable or hot water coming out and causing burns.

(Example 7)
In FIG. 18, 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 a ceramic heater that is a heating amount of the hot water device 2 to vary the amount of electricity supplied to the first temperature setting unit 42 to discharge the wash water having the first set temperature determined by the first timer unit 44 for the first set time, and to set the second temperature. The washing water having the second set temperature determined by the unit 43 can be discharged for the second set time determined by 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 exploded perspective view of a hot water apparatus showing Reference Example 1 of the present invention. Front sectional view of the same hot water system Side sectional view of the hot water system 1 is a schematic exploded perspective view of a hot water device in Embodiment 1 of the present invention. The schematic perspective view of the hot water apparatus in Example 2 of this invention Front sectional view of the same hot water system Schematic exploded perspective view of a hot water device in Reference Example 2 of the present invention Front sectional view of the same hot water system Side sectional view of the hot water system The schematic exploded perspective view of the hot water apparatus in Example 3 of this invention Front sectional view of the same hot water system Side sectional view of the hot water system Schematic exploded perspective view of a hot water device in Reference Example 3 of the present invention Schematic configuration diagram of the hot water system The principal part expanded sectional view of the hot water apparatus of Example 4 of this invention The principal part expanded sectional view of the hot-water apparatus of Example 5 of this invention Schematic block diagram of a human body local cleaning apparatus showing Embodiment 6 of the present invention Schematic block diagram of a human body local cleaning apparatus showing Embodiment 7 of the present invention Schematic configuration diagram of hot water device in conventional human body local cleaning device Schematic configuration diagram of hot water device in conventional human body local cleaning device

1 Hot water device body 2 Ceramic heater (flat plate heating means)
4 Heat exchange section 5 Heating element (heating section)
6 Ceramic plate 8 Bending portion 9 Meandering water channel 10 Water inlet 11 Water outlet 25 Inflow channel 26 Outflow channel 35 Wire (turbulent flow promoting body)
37 Water supply unit 38 Washing nozzle 42 First temperature setting unit 43 Second temperature setting unit 44 First timer unit 45 Second timer unit

Claims (2)

Flat plate heating means comprising 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;
The flat plate heating means is disposed on both sides of the flat plate heating means, and the flat plate heating means is partly a road wall so that the flowing water is directly heated,
A hot water apparatus comprising a heat exchange part of a resin material that forms a meandering water channel from a substantially lowermost water inlet of the flat plate heating means to a substantially uppermost water outlet;
A water supply to the meandering waterway;
A cleaning nozzle communicated with the outlet side of the meandering waterway ,
The flat plate heating means of the instantaneous heating type hot water apparatus is composed of a plurality of parallel electric heaters,
A flow rate detection unit for detecting a flow rate of water supplied from the water supply unit to the water inlet;
Temperature detecting means for detecting the temperature of the tapping water,
A first temperature setting unit and a second temperature setting unit for varying the heating amount of the flat plate heating means;
A first timer section for discharging hot water of the first set temperature determined by the first temperature setting section for a first set time;
A control unit having a second timer unit that is determined by the second temperature setting unit and discharges wash water having a second set temperature lower than the first set temperature for a second set time;
Based on the flow rate signal of the flow rate detection unit and the temperature signal of the temperature detection means
A human body local cleaning device that instantaneously varies the temperature of the cleaning water by controlling the heating amount of the flat plate heating means . The human body local cleaning apparatus according to claim 1, wherein a turbulence promoting body is provided in the meandering water channel.

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