JP2006038270A - Fluid heating device and various washing devices using same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid heating device capable of detecting a temperature of a heating element of a part faced into a fluid heating container. <P>SOLUTION: A heat transfer member 11 is mounted to thermally connect a fluid contact part 8 of a heating means 10 faced into a fluid flow passage 6 and the fluid heating container 7, and a temperature detecting means 12 is mounted on an outer part of the fluid heating container 7 opposite to the heat transfer member 11, thus a temperature of the heating means in the fluid flow passage can be detected from the outer part of the fluid heating container with high measuring accuracy and high response speed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fluid heating apparatus that heats a fluid to a predetermined temperature.

  Conventionally, this type of fluid heating apparatus brings a heat sensitive plate into contact with a heating element in a fluid heating container, and the temperature detection means detects the temperature of the heating element via the heat sensitive plate, thereby controlling heating of the fluid and emptying. It is configured to take measures against an abnormal temperature rise such as when whispering (for example, Patent Document 1).

FIG. 12 shows a conventional fluid heating apparatus described in Patent Document 1. In FIG. As shown in FIG. 12, it is composed of a fluid heating container 1 that retains fluid, a heating element 2, a heat sensitive plate 3, a temperature detection means 4, and a control means 5 that controls heating of the heating element 2. .
JP 2002-322713 A

  However, in the conventional configuration, there is a problem that it is difficult for the heat-sensitive plate to obstruct the flow of the fluid in the fluid heating container due to natural convection, or to assemble the heat-sensitive plate and the heating element with high accuracy. Was.

  The present invention solves the above-described conventional problems, and is configured so that a heating element at a part facing the fluid heating container and the outside of the fluid heating container are in thermal contact with each other, thereby allowing fluid flow and assembly. An object of the present invention is to provide a fluid heating apparatus capable of detecting the temperature of a heating element at a portion facing the fluid heating container without hindering the above.

  In order to solve the conventional problem, the fluid heating device of the present invention is provided with a heat transfer body that thermally connects the fluid contact portion of the heating means facing the fluid flow path and the fluid heating container. A temperature detection means is provided outside the fluid heating container facing the heat transfer body.

  Thereby, the heating means in the fluid flow path is detected from the outside of the fluid heating container by the temperature detecting means thermally connected by the heat transfer body.

  The fluid heating device of the present invention is configured to measure the temperature of the heating means in the fluid flow path from the outside of the fluid heating container, and can detect with increased accuracy and response speed. The reliability as a heating device can be improved without hindering.

  Moreover, various devices using the fluid heating device of the present invention can improve reliability and promote downsizing.

  According to a first aspect of the present invention, a fluid heating container having a fluid flow path through which a fluid flows, a fluid contact portion that contacts the fluid, and a heat generating portion disposed inside the fluid heating portion are disposed in the fluid flow path. Heating means, a heat transfer body that thermally connects the fluid contact portion of the heating means and the fluid heating container, and a temperature detection means outside the fluid heating container at a position facing the heat transfer body. It was. Thereby, the temperature of the heating means in the fluid channel can be detected from outside the fluid heating container with increased measurement accuracy and response speed, and reliability can be improved.

  In the second invention, in particular, the heat transfer body of the second invention is a flow direction restricting body that restricts the flow direction of the fluid flow path. As a result, the flow velocity distribution in the fluid flow path can be stabilized, and stable heating can be achieved while preventing the occurrence of local overheating and the like, so that impurities in the fluid are deposited as scale.

  In the third invention, in particular, the heat transfer body of the first invention is a turbulence promoting body that promotes turbulence in the flow of the fluid flow path. This makes it possible to equalize the temperature distribution in the fluid and prevent local overheating, etc., thereby reducing the precipitation of impurities in the fluid as scale, and further improving the heat transfer coefficient at the heat transfer surface. Therefore, the downsizing of the apparatus can be promoted by downsizing the heat transfer surface.

  In the fourth invention, in particular, the heat transfer body according to any one of the first to third inventions is sandwiched between the projecting portion provided on the fluid heating container and the heating means, so that the heat transfer body is locally heated. By limiting the contact portion, a reliable thermal connection can be realized, and the reliability of heat transfer can be improved.

  In the fifth invention, in particular, the protrusion of the fourth invention is formed by deforming the fluid heating container in the direction of the heating means to reduce the heat resistance of the contact portion by applying a reliable contact pressure. Therefore, the heat transfer can be improved, and the protrusion can be easily formed to improve the workability.

  In the sixth invention, in particular, the fluid heating container according to any one of the first to fifth inventions is made of a resin material for the fluid heating container, and at least a portion facing the heat transfer body is made of a material having improved thermal conductivity. By providing the part, not only can the heat sensing part reliably transfer heat to the temperature detection means, but the fluid heating container is composed of a resin material having a lower thermal conductivity than metal, so that the heat insulating material is used. Even if it is not arranged, the amount of heat radiation to the outside can be reduced, and the cost can be reduced by promoting energy saving and reducing the heat insulating material.

  In the seventh aspect of the invention, in particular, when the heat sensitive part of the sixth invention is an insert body formed by inserting a member having high thermal conductivity on the wall surface of the fluid heating container, the heat sensitive part is formed. Productivity can be improved, and reliability can be improved by stabilizing the heat transfer performance of the heat transfer section.

  In the eighth invention, in particular, the temperature detecting means of any one of the first to seventh inventions is used as the temperature detecting means, so that the temperature of the fluid contact portion of the heating means in the fluid flow path is reduced. The heat transfer body and the temperature detection means can be arranged at a position where the highest temperature is predicted, and safety can be ensured by using an overtemperature prevention means.

  In the ninth aspect of the invention, in particular, since the heating means of any one of the first to eighth aspects is a sheathed heater, the heating means can be used in water without worrying about strong mechanical strength, and the sheathed heater does not generate heat. A rubber seal member that prevents fluid from leaking to the outside can be used in contact with the portion, so that an inexpensive and reliable seal configuration can be achieved.

  According to a tenth aspect of the present invention, there is provided the fluid heating device according to any one of claims 1 to 9 and an ejection unit that ejects the cleaning water heated by the fluid heating device to a portion to be cleaned of a human body. Even when empty baking or the like occurs due to a supply abnormality or the like, the abnormality can be detected quickly and the supply of heat to the heating means can be stopped to improve safety, and a compact and compact sanitary washing apparatus can be obtained.

  Since the eleventh aspect of the invention is a washing and washing apparatus including the fluid heating apparatus according to any one of claims 1 to 9 and a washing tub for storing washing water heated by the fluid heating apparatus, the fluid heating apparatus itself Since it is small and compact, there is a high degree of freedom in the mounting position of this apparatus, and it can be made compact and compact as a washing and washing apparatus.

  A twelfth aspect of the present invention is the fluid heating apparatus according to any one of claims 1 to 9, a cleaning tank that stores an object to be cleaned such as tableware, and the cleaning water heated by the fluid heating apparatus. It was set as the tableware washing apparatus provided with the ejection means to make it eject. Thereby, since the fluid heating device itself is small and compact, the degree of freedom of the mounting position of the device is high, and the washing and washing device can be made compact and compact. Moreover, since the temperature of the washing water can be changed in a short time by a compact and compact forced circulation type fluid heating device with improved safety, the optimum washing temperature can be arbitrarily set, and the dishwashing device can be easily used. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view showing the configuration of the fluid heating apparatus according to the first embodiment of the present invention.

  In FIG. 1, a fluid heating container 7 having a fluid flow path 6 through which a fluid flows inside has a fluid contact portion 8 that faces the fluid flow path 6 and contacts the fluid, and a heat generating portion 9 disposed inside the fluid contact portion 8. A heating means 10 is incorporated. The fluid contact portion 8 of the heating means 10 and the fluid heating container 7 are thermally connected by a heat transfer body 11 in the middle of the fluid flow path 6, and outside the fluid heating container 7 at a position facing the heat transfer body 11. A temperature detecting means 12 is provided. In the present embodiment, the heating means 10 is implemented using a sheathed heater 15.

  The fluid heating container 7 has a substantially cylindrical shape having a fluid inlet 13 and an outlet 14, and a sheathed heater 15, which is a heating means 10 for heating the fluid to a predetermined temperature, penetrates the heater container 7. It is attached. The sheathed heater 15 in FIG. 1 has a rod shape with a circular cross section. In this embodiment, a copper tube sheath having good thermal conductivity is used. However, depending on the type of fluid, a sheath such as stainless steel having high corrosion resistance may be used.

  The sheathed heater 15 is divided into a heat generating portion 9 having a heater wire such as nickel chrome inside the sheath and a non-heat generating portion 16 at the sheath end. The non-heat generating portion 16 has an electrode terminal 17 therein, and the electrode terminal 17 does not generate heat even when energized because of its low electrical resistance. The periphery of the heater wire between the electrode terminals is filled with magnesium oxide powder, which is an insulating material, and the heat generated by the heater wire is transmitted to the sheath via the magnesium oxide, and the fluid flowing on the sheath surface is heated. It is.

  And the O-ring 18 as an airtight member for preventing the fluid flowing in the fluid heating container 7 from leaking to the outside is provided. First, on the inlet 13 side, the fluid heating container 7, the presser plate 19 that is a heat transfer member, and the lid 20 are sealed by O-rings 18 a and 18 b, thereby preventing fluid from leaking out of the fluid heating container 7. . The fluid outlet 14 side is sealed by the fluid heating container 7, the presser plate 21 that is a heat transfer member, and the lid 22 by O-rings 18 c and 18 d that are airtight members, so that fluid leaks out of the fluid heating container 7. Is prevented.

  Note that the O-rings 18b and 18d serve both as the external sealing of the fluid that prevents the fluid from leaking out of the fluid heating container 7 and the role of holding the sheathed heater 15 that is a heater. That is, the O-ring 18b is sandwiched between the presser plate 19 and the lid 20 and comes into contact with the outer periphery of the non-heat generating portion 16 at one end of the sheathed heater 15. The O-ring 18d is sandwiched between the presser plate 21 and the lid 22 and is sheathed. In this configuration, the other end of the heater 15 is in contact with the outer periphery of the non-heat generating portion 16.

  In addition, a triac 23, which is a heat generating electronic component, is fastened and fixed to the holding plate 19, which is a heat transfer member on the inflow port 13 side, by a power control element of the sheathed heater 15 with screws so as to make sufficient thermal contact. .

  The heat transfer body 11 is set not only to spirally form the fluid flow path 6 formed in an annular shape on the outer peripheral side of the heating means 10, but also to set the passage cross section to be smaller than the annular portion, so that the fluid is surrounded by the heating means 10. Is a flow direction regulating body 24 that regulates the flow direction so as to flow in a spiral shape, and the flow direction regulating body 24 is thermally connected to the heating means 10 on the inner peripheral side, and is also a flow direction regulating body. The outer peripheral side of 24 is thermally connected to the fluid heating container 7. And the above-mentioned temperature detection means 12 is provided outside the fluid heating container 7 at a position facing the flow direction regulating body 24 as the heat transfer body 11, and the fluid heating container 7 is formed of a metal having good thermal conductivity. Yes. Further, here, the temperature detecting means 12 is fixed so that the temperature fuse 26, which is an overheat prevention means 25 for cutting off the energization to the sheathed heater 15 when the abnormal temperature is overheated, is in sufficient thermal contact. Further, a thermistor 27 for detecting the temperature of the fluid is attached to the outlet 14 of the fluid heating container 7. The signal from the thermistor 27 is connected to the control means 29 in a conductive line. A temperature switch in which electrical contacts are mechanically turned on and off at a predetermined temperature so that the heating temperature of the fluid can be prevented from becoming a dangerous temperature even when an electrical failure occurs in the thermistor 27 or the control means 28. A certain thermostat 29 is mounted.

  About the fluid heating apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the fluid is introduced from the inlet 13, and the control unit 28 starts energizing the sheathed heater 15. Then, heat exchange occurs between the fluid flowing between the sheathed heater 15 and the fluid heating container 7 and the sheathed heater 15. Here, the fluid flowing through the fluid flow path 6 does not flow in a circular cross section in the direction of the outlet 14, but flows in a spiral flow path whose flowing cross section is smaller than that of the annular portion. The flow rate in the fluid flow path 6 is stabilized by the flow that enhances the heat transfer by the stirring action, the heat transfer from the heating means 10 is promoted, and the stable heating that prevents local overheating is performed, and the occurrence of local overheating, etc. This prevents the impurities in the fluid from depositing as scale. In this way, the fluid heated to a predetermined temperature flows out from the outlet 14. At this time, the temperature of the fluid flowing out from the outlet 14 is sent from the thermistor 27 to the control means 28, and the control means 28 sends the signal to the sheathed heater 15 via the triac 23 according to the temperature signal from the thermistor 27. While controlling the supplied power, the temperature of the fluid flowing out from the outlet 14 is controlled to be a predetermined temperature.

  If the fluid supply from the inlet 13 is abnormally supplied at this time and the fluid supply is stopped or the fluid is not supplied from the beginning of the heating, the heating means 10 in the fluid heating container 7 is in an baked state. In this case, the heat generating portion 9 of the heating means 10 rapidly increases in temperature. This abnormal overheating is detected by the flow direction regulating body 24 acting as the heat transfer body 11 and is detected outside the fluid heating container 7. The means 12 is detected in a state where the measurement accuracy is high and the response speed with little time delay is increased, and is transmitted to the control means 28, and the energization to the heating means 10 is immediately cut off to ensure safety. In the case where the temperature detecting unit 12 is a thermal fuse 26 that serves as the overheat prevention unit 25, the temperature of the fluid contact portion 8 of the heating unit 10 is predicted to be highest in the fluid flow path 6. The overheating prevention means 25 as the heat element 11 and the temperature detection means 12 can be arranged, and high-accuracy abnormal overheating detection and high responsiveness can be secured, and the temperature fuse 26 itself is physically cut by the abnormal temperature. Since the energization to the heating means 10 is cut off, safety can be ensured even if a failure occurs in the control means 28.

  In addition, by using the sheathed heater 15 as the heating means 10, it can be used in water without worrying about strong mechanical strength, and it is made of rubber such as an O-ring that prevents external leakage of fluid to the non-heat generating portion 16 of the sheathed heater 15. The seal member can be used in contact with it, and an inexpensive and reliable seal configuration can be achieved.

  In addition, when the power of the sheathed heater 15 is adjusted by the triac 23, the triac 23, which is a heat generating electronic component, also generates heat by the power control element. Therefore, if the heat is not cooled, the triac 23 is damaged by heat. However, the heating means 10 provided so as to penetrate the fluid heating container 7 having the fluid inlet 13 and outlet 14 as in the present embodiment, and the heat transfer member that is in contact with the fluid at the penetration. With the configuration in which the triac 23 that is a heat generating electronic component is attached in thermal contact with the presser plate 19, the heat of the triac 23 is transmitted to the presser plate 19 that is a heat transfer member and is radiated to the fluid. Therefore, the water cooling effect of the triac 23 that is a heat generating electronic component can be secured, and damage to the heat generating electronic component attached to the presser plate 19 that is a heat transfer member can be prevented. In addition, the presser plate 19 that is a heat transfer member can be used for both the prevention of fluid leakage and the heat dissipation of the heat generating electronic component 23.

  In addition, the presser plate 19 that is a heat transfer member to which the triac 23 is attached is provided on the inlet side 13 of the fluid heating container 7, so that the fluid is heated at a low temperature before being heated by the sheathed heater 15 that is a heater. That is, since water comes into contact with the presser plate 19 that is the heat transfer member and the temperature difference between the triac 23 and the water is larger, the heat of the triac 23 that is the heat generating electronic component is dissipated from the presser plate 19 to the more fluid water. This makes it easier to cool the triac 23 more effectively.

  As described above, the control means 28 controls the heating amount of the sheathed heater 15 based on the temperature signal detected by the thermistor 27, so that even if the flow rate flowing in the fluid heating container 7 changes, the predetermined temperature Can be obtained from the outlet 14. The instantaneous fluid heater that controls the fluid to a predetermined temperature in a short time by the required flow rate is warmer than the hot water storage fluid heater that heats and retains the fluid. Because it can reduce heat dissipation loss at the time, energy saving is high.

  In addition, a thermostat 29 that is a temperature switch that mechanically turns on and off electrical contacts at a predetermined temperature is mounted near the outlet 14 of the fluid heating container 7, so that even if something abnormal occurs, the thermistor 27, the control means 28, etc. Even when an electrical failure occurs, when the heating temperature of the fluid exceeds a predetermined temperature, the electrical contacts of the thermostat 29 are mechanically opened, and the energization of the sheathed heater 15 as a heater is interrupted. Preventing dangerous temperatures.

  Furthermore, since the temperature fuse 26 which is the overheat prevention means 25 is attached to the holding plate 21 on the outlet 14 side of the fluid heating container 7, the thermistor 27 and the control means 28 which are unlikely to occur first fail. In addition, even when it is assumed that all of the thermostats 29 have failed on the unsafe side, the thermal fuse 26 cuts off the electrical conduction when the temperature of the fluid exceeds a predetermined temperature.

  2 and 3 are cross-sectional views showing other configurations of the heat transfer body 11 portion of the fluid heating apparatus shown in FIG.

  In FIG. 2, the heat transfer body 11 is provided in the fluid heating container 7 and sandwiched so as to be sandwiched between the projecting portion 30 protruding toward the heating means 10 and the heating means 10. Without restricting the heat contact, it is possible to realize a reliable thermal connection by locally limiting the thermal contact portion, and to improve the reliability of heat transfer.

  In FIG. 3, the protrusion 30 is formed by deforming the fluid heating container 7 so as to become the concave portion 31 in the direction of the heating means 10, and by making the deformation direction and the pressing direction substantially coincide with each other, a reliable contact pressure is obtained. In addition, the heat resistance of the contact portion can be reduced to improve the heat transfer property, and the protrusion can be easily formed to improve the workability. Further, the fluid heating container 7 can be formed into a thin pipe shape, and productivity can be improved.

  4 and 5 are sectional views showing other configurations of the fluid heating container 7 of the fluid heating apparatus shown in FIG.

  In FIG. 4, the fluid heating container 7 is made of a resin material, and at least a portion facing the heat transfer body 11 and the temperature detecting means 12 is provided with a heat sensitive portion 32 formed of a material having improved thermal conductivity. By using a partially mixed metal powder or another resin material having a relatively good thermal conductivity locally, the heat sensitive part 32 can reliably transfer heat to the temperature detecting means 12. In addition, the fluid heating container 7 is made up of a resin material having a lower thermal conductivity than metal, so that most of the fluid heating container 7 can reduce the amount of heat released to the outside without providing a heat insulating material. The cost can be reduced by reducing the material. Further, even if an expensive material is used locally in the heat sensitive part 32, the cost increase can be reduced to the minimum.

  In FIG. 5, the heat sensitive part 32 is an insert body 33 formed by inserting a member having high thermal conductivity on the wall surface of the fluid heating container 7, and the insert body 33 is transmitted by a block such as a metal having excellent heat conduction. By connecting the thermal body 11 and the temperature detection means 12, the productivity when forming the heat sensitive part 32 can be improved, and the reliability can be improved by stabilizing the heat transfer performance of the heat sensitive part 32.

  As described above, in the present embodiment, the heat transfer body that thermally connects the fluid contact portion of the heating means and the fluid heating container, and the temperature outside the fluid heating container at a position facing the heat transfer body. By providing the detection means, it is possible to detect the temperature of the heating means in the fluid flow path with increased measurement accuracy and response speed from the outside of the fluid heating container, thereby improving reliability.

  In addition, since the heat transfer body of the present embodiment is a flow direction restricting body that restricts the flow direction of the fluid flow path, the flow velocity distribution in the fluid flow path can be stabilized, and local overheating or the like is generated. By preventing this, it is possible to perform stable heating with reduced precipitation of impurities in the fluid as scale.

  In addition, since the heat transfer body of the present embodiment is sandwiched between the protrusion provided on the fluid heating container and the heating means, the heat contact portion is locally limited to ensure reliable thermal connection. Can be achieved and the reliability of heat transfer can be improved.

  In addition, since the protruding portion of the present embodiment is formed by deforming the fluid heating container in the direction of the heating means, the heat resistance of the contacting portion can be reduced by applying a reliable contact pressure to improve the heat conductivity. The projecting portion can be easily formed and the workability can be improved.

  In addition, the fluid heating container of the present embodiment is made of a resin material, and at least the part facing the heat transfer body is provided with a heat sensing part formed of a material with increased thermal conductivity, thereby detecting the temperature by the heat sensing part. Not only can reliable heat transfer to the means, the fluid heating vessel is made up of a resin material with a lower thermal conductivity than metal, so the amount of heat released to the outside can be reduced without the need for thermal insulation. The cost can be reduced by promoting energy saving and reducing heat insulating materials.

  Further, the heat sensitive part of the present embodiment is an insert body formed by inserting a member having high thermal conductivity on the wall surface of the fluid heating container, so that productivity when forming the heat sensitive part can be improved. The reliability can be improved by stabilizing the heat transfer performance of the heat transfer section.

(Embodiment 2)
FIG. 6 is a cross-sectional view showing the configuration of the fluid heating apparatus according to the second embodiment of the present invention.

  In FIG. 6, the same members and the same functions as those of the embodiment of FIGS. 1 to 5 are denoted by the same reference numerals, detailed description thereof will be omitted, and different points will be mainly described.

  The heat transfer body 11 is a turbulence promoting body 34 that promotes turbulence in the flow of the fluid flow path 6, and the turbulence promoting body 34 has a plurality of passage holes 35 as shown in FIG. 7. A plurality of the turbulence promoting bodies 34 are installed in the annular fluid flow path 6 provided in the fluid superheating vessel 7 at intervals in the flow direction.

  For this reason, every time the flow in the fluid flow path 6 flows through the passage hole 35 of the turbulence promoting body 34 that is the heat transfer body 11, the turbulence of the flow is promoted, and the heat in the fluid contact portion 8 that is the heat transfer surface. By improving the transmission and equalizing the temperature distribution in the fluid and preventing the occurrence of local overheating and the like, stable heating is achieved with reduced precipitation of impurities in the fluid as scale. Furthermore, since the heating energy by the heating means 10 can be efficiently transmitted to the fluid, the apparatus can be downsized by reducing the heat transfer area. In addition, when the fluid is not supplied and empty firing occurs, the abnormal temperature rise of the heat generating portion 9 of the heating means 10 is quickly transmitted to the temperature detecting means 12 by the turbulence promoting body 34 which is the heat transfer body 11, and the heating means. The power supply to 10 is stopped and safety is ensured. In particular, not only the portion of the turbulence promoting body 34 facing the temperature detecting means 12 is thermally connected to the heating means 10, but also the portion of the turbulence promoting body 34 not facing the temperature detecting means 12 is also connected to the heating means 10. By making the thermal connection, the effective heat transfer area can be expanded, and the downsizing of the apparatus can be further promoted.

  As described above, in this embodiment, the heat transfer body is a turbulence promoting body that promotes turbulence in the flow of the fluid flow path, so that the temperature distribution in the fluid can be equalized and local overheating can be achieved. By preventing the generation of impurities, it is possible to achieve stable heating that reduces the precipitation of impurities in the fluid as scale, and to further improve the heat transfer coefficient at the heat transfer surface. Can promote.

(Embodiment 3)
8 to 11 are configuration diagrams of various cleaning apparatuses showing a third embodiment using the fluid heating apparatus according to any one of the first and second embodiments. FIG. 8 is a sanitary cleaning apparatus, FIG. 9 and FIG. 10 is a washing and washing apparatus, and FIG. 11 is a dish washing apparatus.

  In FIG. 8, a heated toilet seat 37 and a sanitary washing device body 38 are installed on the toilet bowl 36. The sanitary washing device main body 38 is provided with a fluid heating device 39, and the heat-exchanged hot water is ejected from the washing nozzle 40 to wash the local part of the human body 41. And in the sanitary washing apparatus main body, the cutoff valve 42, the flow control apparatus 43, and the water supply pipe 44 connected to water supply sources, such as a water supply, are provided as main components. Other parts such as the control board are omitted.

  In the sanitary washing apparatus configured as described above, even when empty baking or the like occurs due to fluid supply abnormality or the like, the abnormality is quickly detected and the heat supply to the heating means 10 is stopped to increase safety. By using the fluid heating device 39, a highly safe device can be provided, and a compact and compact sanitary washing device can be obtained. In addition, by incorporating the fluid heating device 39 with small scale and little scale adhesion in the sanitary washing device main body 38, the main body can be miniaturized, and the life of the fluid heating device 39 can be extended and the life of the sanitary washing device can be increased. The sanitary washing device can be made to operate stably without clogging the washing nozzle 40 and the like as well as the fluid heating device 39.

  In FIG. 9, a water supply port 45 that supplies water and a switching valve 49 that branches a water supply route from the water supply port 45 to the washing tub 46 into a main water channel 47 and a bypass channel 48 are provided, and fluid heating is performed in the middle of the bypass channel 48. The apparatus 39 is provided. Here, there are an on-off valve 50 that opens and closes the bypass path 48, a hot water discharge port 51, a control circuit 52 that performs switching of water channels, adjustment of flow rate and temperature, and control related to washing, and a drain port 53. Moreover, as shown in FIG. 10 which is an AA cross section in FIG. 9, the fluid heating device 39 is configured in a cylindrical shape, and is installed vertically in the corner portion 54 of the washing machine to save space.

  The operation and action of the washing and washing apparatus configured as described above will be described below.

  First, water is supplied from the water supply port 45 and supplied to the bypass path 48 by a switching valve 49 that also serves as a flow rate control valve. The supplied water is heated to an appropriate temperature by the instantaneous fluid heating device 39. Here, the appropriate temperature control function of the fluid heating device 39 is to perform energization control of the heater for heating so that the water temperature detected by the thermistor 27 provided on the downstream side of the flow path becomes a temperature suitable for washing. .

  By heating the water to be supplied instantly and supplying water of the appropriate temperature to the washing tub, it is heated only during use, so it can reduce power consumption, and the fluid heating device can be mounted with a high degree of freedom and compact. Depending on the nature, it can be a small and compact washing device.

  In FIG. 11, a cleaning tank 55, an opening 57 that can be opened and closed by a door 56, a spraying means 58 that is provided below the cleaning tank 55 and jets cleaning water, a pump 59 that circulates the cleaning water, and a water receiver 60 that stores the cleaning water. , A cleaning basket 62 for storing an object to be cleaned 61 such as tableware, a rail 63 for movably supporting the cleaning basket 62, a blower fan 64, a fluid heating device 39 provided below the cleaning tank 55, and water supply to the fluid heating device 39 It is the water supply pipe 65 to do.

  In the dish washing apparatus configured as described above, the washing water in the washing tank 55 is warmed by the fluid heating device 39, is pumped to the ejection means 58 by the operation of the pump 59, and is ejected vigorously from the ejection means 58. . The object to be cleaned 61 such as tableware housed in the cleaning basket 62 is cleaned by the cleaning water sprayed from the jetting means 58, and after the cleaning is completed, the cleaning water is drained by opening a drain valve (not shown). The object to be cleaned 61 such as tableware is dried by the ventilation of the operation 63.

  By adopting the forced circulation type as the fluid heating device 39, the temperature of the cleaning water can be changed to a temperature suitable for the object to be cleaned 61 in a short time, the cleaning effect can be enhanced, and energy is saved by avoiding unnecessary high temperatures. Can be promoted. Further, the convenience of the cleaning device can be enhanced by the safety and the compact fluid heating device 39. Thus, since the temperature of the washing water can be changed in a short time by the forced circulation type fluid heating device with improved safety, the optimum washing temperature can be arbitrarily set, and a small and compact dishwashing apparatus can be obtained.

  As described above, in the present embodiment, the fluid heating device according to any one of claims 1 to 9 and the ejection means for ejecting the cleaning water heated by the fluid heating device to the portion to be cleaned are provided. This makes it possible to detect abnormalities quickly and stop the heat supply to the heating means to increase safety even when there is a fluid supply abnormality etc. It can be.

  Further, in the present embodiment, the fluid heating device according to any one of claims 1 to 9 and the washing tub for storing the washing water heated by the fluid heating device are provided, so that the fluid heating device itself is small. Since it is compact, there is a high degree of freedom in the mounting position in the main body, and a small and compact washing and washing apparatus can be obtained.

  Further, in the present embodiment, the fluid heating device according to any one of claims 1 to 9, a cleaning tank for storing an object to be cleaned such as tableware, and cleaning water heated by the fluid heating device are covered. Equipped with spraying means for spraying the cleaning object, the temperature of the cleaning water can be changed in a short time by the forced circulation type fluid heating device with improved safety, so that the optimal cleaning temperature can be set arbitrarily, and it is compact and compact. It can be a dishwasher.

  As described above, the fluid heating device according to the present invention can detect the temperature of the heating element without hindering the flow of fluid or the assembly of the device as described above, and can be highly safe and compact. Therefore, it can be applied to a heat exchanger such as a sanitary washing apparatus, a washing washing apparatus, and a dish washing apparatus.

Sectional drawing of the fluid heating apparatus in Embodiment 1 of this invention Sectional drawing of the other structure of the heat-transfer body part in FIG. Sectional drawing of the other structure of the heat-transfer body part in FIG. Sectional drawing of the other structure of the fluid heating container in Embodiment 1 of this invention Sectional drawing of the other structure of the fluid heating container in FIG. Sectional drawing of the other structure of the heat exchanger in Embodiment 2 of this invention External view of heat transfer body in FIG. Sectional drawing of the sanitary washing apparatus in Embodiment 3 of this invention Sectional drawing of the washing-cleaning apparatus in Embodiment 3 of this invention Cross-sectional view of the washing and washing apparatus in FIG. Sectional drawing of the tableware washing apparatus in Embodiment 3 of this invention Sectional view of a conventional fluid heating device

Explanation of symbols

DESCRIPTION OF SYMBOLS 6 Fluid flow path 7 Fluid heating container 8 Fluid contact part 10 Heating means 11 Heat transfer body 12 Temperature detection means 15 Seeds heater 24 Flow direction control body 25 Overtemperature prevention means 30 Protrusion part 32 Heat sensing part 33 Insert body 34 Disturbance promotion body 39 Fluid heating device

Claims (12)

A fluid heating container having a fluid flow path through which a fluid flows, a fluid contact portion that contacts the fluid, and a heating means that has a heat generating portion disposed inside the fluid contact portion, and the fluid contact portion faces the fluid flow path; A fluid heating apparatus comprising: a heat transfer body that thermally connects the fluid contact portion of the heating means and the fluid heating container; and a temperature detection means provided outside the fluid heating container at a position facing the heat transfer body. The fluid heating device according to claim 1, wherein the heat transfer body is a flow direction restricting body that restricts a flow direction of the fluid flow path. The fluid heating apparatus according to claim 1, wherein the heat transfer body is a turbulence promoting body that promotes turbulence in the flow of the fluid flow path. The fluid heating apparatus according to any one of claims 1 to 3, wherein the heat transfer body is sandwiched between a protrusion provided in the fluid heating container and the heating means. The fluid heating device according to claim 4, wherein the protrusion is formed by deforming the fluid heating container in the direction of the heating means. The fluid heating apparatus according to any one of claims 1 to 5, wherein the fluid heating container is made of a resin material, and at least a portion facing the heat transfer body is provided with a heat-sensitive portion formed of a material having enhanced thermal conductivity. The fluid heating device according to claim 6, wherein the heat sensitive part is an insert body formed by inserting a member having high thermal conductivity on the wall surface of the fluid heating container. The fluid heating apparatus according to any one of claims 1 to 7, wherein the temperature detection means is an overheat prevention means. The fluid heating apparatus according to claim 1, wherein the heating means is a sheathed heater. A sanitary washing apparatus comprising: the fluid heating apparatus according to any one of claims 1 to 9; and a jetting unit that jets cleaning water heated by the fluid heating apparatus to a portion to be cleaned of a human body. A washing and washing apparatus comprising: the fluid heating apparatus according to any one of claims 1 to 9; and a washing tub that stores washing water heated by the fluid heating apparatus. A fluid heating device according to any one of claims 1 to 9, a cleaning tank for storing an object to be cleaned such as tableware, and an ejection means for ejecting cleaning water heated by the fluid heating device to the object to be cleaned. Dishwasher.

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