JP4209302B2

JP4209302B2 - Instantaneous heat exchanger

Info

Publication number: JP4209302B2
Application number: JP2003354519A
Authority: JP
Inventors: 徹家村; 実松井; 理典柳瀬
Original assignee: Toto Ltd
Current assignee: Toto Ltd
Priority date: 2003-10-15
Filing date: 2003-10-15
Publication date: 2009-01-14
Anticipated expiration: 2023-10-15
Also published as: JP2005121263A

Description

本発明は、使用するときにのみ流れる水を瞬間的に加熱し、温水を連続して供給する瞬間式熱交換器に係るものである。 The present invention relates to an instantaneous heat exchanger that instantaneously heats water that flows only when it is used and supplies hot water continuously.

従来の、水を使用するときにのみ瞬間的に加熱し、温水を連続して供給することができる瞬間式熱交換器として、図７，８に示すようなものが提案されている。（特許文献１参照）本熱交換器を適用した人体洗浄装置の構成としては、図８のようになり、水道本管から分岐された水道水（冷水）を本体ケーシング１０１内に配設される水閉止弁１０２を開閉することにより人体洗浄装置内に引き込み、洗浄水加熱手段１０３に備えられたシーズヒーター（図示せず）で瞬間的に加熱し、その加熱された洗浄水を洗浄ノズル１０９より人体局部に向けて噴出させ、人体局部を洗浄する。
洗浄水加熱手段１０３での、洗浄水の流れと加熱の状況は、図７に示すように、水閉止弁１０２から引き込まれた洗浄水は、入水口１２４からシーズヒーター１２３が設置されたパイプ状ケース１２１に流れ込み、流路１２２内を流れながらシーズヒーター１２３によって加熱される。そして、流路１２２内を流れながら加熱された洗浄水は、出水口１２５から洗浄ノズルへと供給される。なお、符号１２６はパイプ状ケースのフランジ，１２７はシーズヒーターのフランジ、１２８は両フランジを結合する止具、１２９はパッキンである。
洗浄水を予め貯湯タンク内で温め、貯留しておく貯湯式熱交換器を用いた人体洗浄装置では、常に洗浄水を保温しておかないといけないため、装置の非使用時にも電力を消費してしまうのに対して、本装置のように、装置使用時にのみ洗浄水を瞬間的に加熱する瞬間式熱交換器を用いた人体洗浄装置では、装置使用待機時の洗浄水保温の必要がないため、貯湯式に比べて消費電力が少なくて済むという利点があった。
その一方、瞬間式の熱交換器は、洗浄水を必要な分だけ瞬間的に加熱する必要があるため、貯湯式のヒーターに比べて一般的に瞬間消費電力が高く、洗浄水加熱時のヒーター表面温度は貯湯式のものに比べて高温となり、またそのヒーター表面では常に流れる水によって熱交換が行われている。そのため、ヒーター周囲の流水の速度分布が均一でない場合は、流速の遅い部分では充分な熱交換が行われず、ヒーター表面に局所的温度変化が生じてしまう。その結果、局所的にヒーター内の発熱線が過熱されてしまったり、局所的熱勾配による発熱線へのストレスが発生してしまい、最終的には発熱線の断線を招いてしまうという問題があった。
特開２００１−３３６２０３（第４頁、第２，３図） 7 and 8 have been proposed as conventional heat exchangers that can be heated instantaneously only when water is used, and hot water can be continuously supplied. (Refer patent document 1) As a structure of the human body washing | cleaning apparatus to which this heat exchanger is applied, it becomes like FIG. 8, and the tap water (cold water) branched from the water main is arrange | positioned in the main body casing 101. FIG. By opening and closing the water shut-off valve 102, the water is drawn into the human body washing device, heated instantaneously by a sheathed heater (not shown) provided in the washing water heating means 103, and the heated washing water is fed from the washing nozzle 109. It spouts toward the human body part and cleans the human body part.
As shown in FIG. 7, the flow of the cleaning water and the state of heating in the cleaning water heating means 103 are as follows. As shown in FIG. It flows into the case 121 and is heated by the sheathed heater 123 while flowing in the flow path 122. The cleaning water heated while flowing in the flow path 122 is supplied from the water outlet 125 to the cleaning nozzle. Reference numeral 126 is a flange of the pipe-shaped case, 127 is a flange of the sheathed heater, 128 is a stopper for connecting both flanges, and 129 is a packing.
In a human body cleaning device that uses a hot water storage heat exchanger that preheats and stores cleaning water in a hot water storage tank, the cleaning water must always be kept warm, so power is consumed even when the device is not in use. On the other hand, in the human body cleaning device using the instantaneous heat exchanger that instantaneously heats the cleaning water only when the device is used as in this device, it is not necessary to keep the cleaning water warm when the device is on standby. Therefore, there was an advantage that less power consumption was required compared to the hot water storage type.
On the other hand, instantaneous heat exchangers need to heat cleaning water instantaneously as much as necessary, and therefore generally have higher instantaneous power consumption than hot water storage heaters. The surface temperature is higher than that of the hot water storage type, and heat is always exchanged by the flowing water on the heater surface. Therefore, when the velocity distribution of the flowing water around the heater is not uniform, sufficient heat exchange is not performed in the portion where the flow velocity is low, and a local temperature change occurs on the heater surface. As a result, there is a problem that the heating wire in the heater is locally overheated, stress on the heating wire due to a local thermal gradient occurs, and eventually the heating wire is disconnected. It was.
Japanese Patent Laid-Open No. 2001-336203 (page 4, FIGS. 2 and 3)

本発明は、上記問題を解決するためになされたもので、本発明の課題はヒーター周囲の流水速度分布の均一化を図り、ヒーター表面の局所的温度変化の発生を抑制し、耐久信頼性の高い瞬間式熱交換器を提供することである The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to make the flow velocity distribution around the heater uniform, to suppress the occurrence of local temperature changes on the heater surface, and to improve durability and reliability. Is to provide a high instantaneous heat exchanger

本発明の一態様によれば、人体洗浄装置に搭載され、使用するときに流れる水を瞬間的に加熱し、温水を連続して供給する瞬間式熱交換器において、一端に入水口を、他端に出水口をそれぞれ設けた熱交換流路と、前記熱交換流路内に配置され、前記熱交換流路内に流入した水を加熱する棒状のシーズヒーターと、前記入水口より下流側に配置され、中央に前記シーズヒーターが貫通された貫通穴と、前記貫通穴の周囲に形成された複数の切り欠きと、を有する整流手段と、を備え、前記複数の切り欠きのそれぞれは、前記シーズヒーターを取り囲む小穴となり、前記入水口に供給した水を、前記小穴を介して前記熱交換流路に流入させることにより、前記熱交換流路内の流速分布を一様に近づけることを特徴とする瞬間式熱交換器が提供される。
そうすることで、シーズヒーターから水への熱伝達がシーズヒーター周りで均一に行えるため、従来、熱交換流路断面における流速分布の不均一によってシーズヒーター表面に生じていた局所的な温度変化を抑制できるようになった。そのためシーズヒーターの発熱線が局所的に過熱されたり、局所的熱勾配によるストレスが発生してしまうことがなくなるため、ヒーター寿命の低下を防ぐことが可能となる。また、温水の局所的温度変化をなくすことができるため、熱交換器の下流に水温検知手段を設けてシーズヒーターへの電気出力をフィードバック制御する際の水温制御性や、熱交換器から吐出される水温の安定性を向上することも可能となる。 According to one aspect of the present invention, in an instantaneous heat exchanger that is mounted on a human body washing apparatus and instantaneously heats flowing water when used and supplies hot water continuously, a water inlet is provided at one end, A heat exchange flow path provided with a water outlet at each end, a rod-shaped sheathed heater that is disposed in the heat exchange flow path and heats the water flowing into the heat exchange flow path, and downstream of the water intake. And a rectifying means having a through hole through which the sheathed heater is penetrated in the center and a plurality of notches formed around the through hole , each of the plurality of notches being It becomes a small hole surrounding the sheathed heater, and the flow rate distribution in the heat exchange channel is made closer to uniform by allowing the water supplied to the water inlet to flow into the heat exchange channel through the small hole. Instant heat exchanger to be provided That.
By doing so, heat transfer from the sheathed heater to the water can be performed uniformly around the sheathed heater, so that the local temperature change that has conventionally occurred on the sheathed heater surface due to non-uniform flow velocity distribution in the cross section of the heat exchange channel is avoided. It became possible to suppress. Therefore, since the exothermic line of the sheathed heater is not locally overheated or stress due to a local thermal gradient is not generated, it is possible to prevent a decrease in heater life. In addition, since the local temperature change of the hot water can be eliminated, the water temperature control means when the water temperature detection means is provided downstream of the heat exchanger and the electric output to the sheathed heater is feedback-controlled, and the heat is discharged from the heat exchanger. It is also possible to improve the stability of the water temperature.

また、本発明の他の一態様によれば、人体洗浄装置に搭載され、使用するときに流れる水を瞬間的に加熱し、温水を連続して供給する瞬間式熱交換器において、一端に入水口を、他端に出水口をそれぞれ設けた熱交換流路と、前記熱交換流路内に配置され、前記熱交換流路内に流入した水を加熱する棒状のシーズヒーターと、前記入水口より下流側に配置され、中央に前記シーズヒーターが貫通された貫通穴と、前記貫通穴の周囲に設けられたメッシュ構造と、を有する整流手段と、を備え、前記入水口に供給した水を、前記メッシュ構造を介して前記熱交換流路に流入させることにより、前記熱交換流路内の流速分布を一様に近づけることを特徴とする瞬間式熱交換器が提供される。
そうすることで、シーズヒーターから水への熱伝達がシーズヒーター周りで均一に行えるため、従来、熱交換流路断面における流速分布の不均一によってシーズヒーター表面に生じていた局所的な温度変化を抑制できるようになった。そのためシーズヒーターの発熱線が局所的に過熱されたり、局所的熱勾配によるストレスが発生してしまうことがなくなるため、ヒーター寿命の低下を防ぐことが可能となる。また、温水の局所的温度変化をなくすことができるため、熱交換器の下流に水温検知手段を設けてシーズヒーターへの電気出力をフィードバック制御する際の水温制御性や、熱交換器から吐出される水温の安定性を向上することも可能となる。 Further , according to another aspect of the present invention, an instantaneous heat exchanger mounted on a human body washing apparatus that instantaneously heats flowing water when used and continuously supplies hot water enters one end of the heat exchanger. A heat exchange channel provided with a water outlet at the other end, a rod-shaped sheathed heater that is disposed in the heat exchange channel and heats water that has flowed into the heat exchange channel, and the water inlet A rectifier having a through-hole that is disposed on the downstream side and through which the sheathed heater is penetrated in the center, and a mesh structure provided around the through-hole, and that supplies water supplied to the water inlet An instantaneous heat exchanger is provided in which the flow velocity distribution in the heat exchange flow path is made to be uniform by flowing into the heat exchange flow path through the mesh structure.
By doing so , heat transfer from the sheathed heater to the water can be performed uniformly around the sheathed heater, so that the local temperature change that has conventionally occurred on the sheathed heater surface due to non-uniform flow velocity distribution in the cross section of the heat exchange channel is avoided. It became possible to suppress. Therefore, since the exothermic line of the sheathed heater is not locally overheated or stress due to a local thermal gradient is not generated, it is possible to prevent a decrease in heater life. In addition, since the local temperature change of the hot water can be eliminated, the water temperature control means when the water temperature detection means is provided downstream of the heat exchanger and the electric output to the sheathed heater is feedback-controlled, and the heat is discharged from the heat exchanger. It is also possible to improve the stability of the water temperature.

また、本発明の他の一態様によれば、人体洗浄装置に搭載され、使用するときに流れる水を瞬間的に加熱し、温水を連続して供給する瞬間式熱交換器において、一端に入水口を、他端に出水口をそれぞれ設けた熱交換流路と、前記熱交換流路内に配置され、前記熱交換流路内に流入した水を加熱する棒状のシーズヒーターと、前記入水口より下流側に配置され、中央に前記シーズヒーターが貫通された貫通穴と、前記貫通穴の周囲に設けられた多孔体と、を有する整流手段と、を備え、前記入水口に供給した水を、前記多孔体を介して前記熱交換流路に流入させることにより、前記熱交換流路内の流速分布を一様に近づけることを特徴とする瞬間式熱交換器が提供される。
そうすることで、シーズヒーターから水への熱伝達がシーズヒーター周りで均一に行えるため、従来、熱交換流路断面における流速分布の不均一によってシーズヒーター表面に生じていた局所的な温度変化を抑制できるようになった。そのためシーズヒーターの発熱線が局所的に過熱されたり、局所的熱勾配によるストレスが発生してしまうことがなくなるため、ヒーター寿命の低下を防ぐことが可能となる。また、温水の局所的温度変化をなくすことができるため、熱交換器の下流に水温検知手段を設けてシーズヒーターへの電気出力をフィードバック制御する際の水温制御性や、熱交換器から吐出される水温の安定性を向上することも可能となる。 Further , according to another aspect of the present invention, an instantaneous heat exchanger mounted on a human body washing apparatus that instantaneously heats flowing water when used and continuously supplies hot water enters one end of the heat exchanger. A heat exchange channel provided with a water outlet at the other end, a rod-shaped sheathed heater that is disposed in the heat exchange channel and heats water that has flowed into the heat exchange channel, and the water inlet A rectifier having a through hole that is disposed further downstream and through which the sheathed heater is penetrated in the center and a porous body provided around the through hole, and that supplies water supplied to the water inlet An instantaneous heat exchanger is provided in which the flow velocity distribution in the heat exchange flow channel is made to approach uniformly by flowing into the heat exchange flow channel through the porous body.
By doing so , heat transfer from the sheathed heater to the water can be performed uniformly around the sheathed heater, so that the local temperature change that has conventionally occurred on the sheathed heater surface due to non-uniform flow velocity distribution in the cross section of the heat exchange channel is avoided. It became possible to suppress. Therefore, since the exothermic line of the sheathed heater is not locally overheated or stress due to a local thermal gradient is not generated, it is possible to prevent a decrease in heater life. In addition, since the local temperature change of the hot water can be eliminated, the water temperature control means when the water temperature detection means is provided downstream of the heat exchanger and the electric output to the sheathed heater is feedback-controlled, and the heat is discharged from the heat exchanger. It is also possible to improve the stability of the water temperature.

また、本発明の他の一態様によれば、人体洗浄装置に搭載され、使用するときに流れる水を瞬間的に加熱し、温水を連続して供給する瞬間式熱交換器において、入水口と、出水口と、の間に設けられた直線的な熱交換流路と、前記熱交換流路内において前記熱交換流路と同軸上に配置され、前記熱交換流路内に流入した水を加熱する棒状のシーズヒーターと、前記入水口と前記熱交換流路との間に設けられた整流手段と、を備え、前記整流手段は、前記入水口及び前記熱交換流路よりも径の大きい圧力室であり、前記シーズヒーターは、前記圧力室を貫通し、前記入水口から前記圧力室への入水方向と、前記熱交換流路の軸方向と、は略垂直であり、前記入水口に供給した水の流入流速エネルギーを前記圧力室において圧力エネルギーに変換してから前記熱交換流路に流入させることにより、前記熱交換流路内の流速分布を一様に近づけることを特徴とする瞬間式熱交換器が提供される。
そうすることで、シーズヒーターから水への熱伝達がシーズヒーター周りで均一に行えるため、従来、熱交換流路断面における流速分布の不均一によってシーズヒーター表面に生じていた局所的な温度変化を抑制できるようになった。そのためシーズヒーターの発熱線が局所的に過熱されたり、局所的熱勾配によるストレスが発生してしまうことがなくなるため、ヒーター寿命の低下を防ぐことが可能となる。また、温水の局所的温度変化をなくすことができるため、熱交換器の下流に水温検知手段を設けてシーズヒーターへの電気出力をフィードバック制御する際の水温制御性や、熱交換器から吐出される水温の安定性を向上することも可能となる。 Further, according to another aspect of the present invention, in the instantaneous heat exchanger that is mounted on the human body washing apparatus and instantaneously heats the water that flows when used and supplies hot water continuously, A linear heat exchange channel provided between the water outlet and the heat exchange channel, which is disposed coaxially with the heat exchange channel, and flows the water flowing into the heat exchange channel. A rod-shaped sheathed heater for heating, and a rectifying means provided between the water inlet and the heat exchange flow path, the rectifying means having a larger diameter than the water inlet and the heat exchange flow path The sheath heater passes through the pressure chamber, and the water inlet direction from the water inlet to the pressure chamber and the axial direction of the heat exchange channel are substantially perpendicular to the water inlet. Converts the flow rate energy of the supplied water into pressure energy in the pressure chamber By flowing into the heat exchange passage from the instantaneous type heat exchanger, characterized in uniformly close that the flow velocity distribution of the heat exchange passage is provided.
By doing so, heat transfer from the sheathed heater to the water can be performed uniformly around the sheathed heater, so that the local temperature change that has conventionally occurred on the sheathed heater surface due to non-uniform flow velocity distribution in the cross section of the heat exchange channel is avoided. It became possible to suppress. Therefore, since the exothermic line of the sheathed heater is not locally overheated or stress due to a local thermal gradient is not generated, it is possible to prevent a decrease in heater life. In addition, since the local temperature change of the hot water can be eliminated, the water temperature control means when the water temperature detection means is provided downstream of the heat exchanger and the electric output to the sheathed heater is feedback-controlled, and the heat is discharged from the heat exchanger. It is also possible to improve the stability of the water temperature.

また、本発明の他の一態様によれば、使用するときに流れる水を瞬間的に加熱し、温水を連続して供給する瞬間式熱交換器において、一端に入水口を、他端に出水口をそれぞれ設けた熱交換流路と、前記熱交換流路内に配置され、前記熱交換流路内に流入した水を加熱する棒状のシーズヒーターと、前記熱交換流路内に配置され、前記熱交換流路内の流速分布を一様にする整流手段と、を備え、前記整流手段は、前記入水口を、前記熱交換流路内への流入流速が相殺されるよう複数配置した流入流速相殺手段であることを特徴とする瞬間式熱交換器が提供される。
そうすることで、シーズヒーターから水への熱伝達がシーズヒーター周りで均一に行えるため、従来、熱交換流路断面における流速分布の不均一によってシーズヒーター表面に生じていた局所的な温度変化を抑制できるようになった。そのためシーズヒーターの発熱線が局所的に過熱されたり、局所的熱勾配によるストレスが発生してしまうことがなくなるため、ヒーター寿命の低下を防ぐことが可能となる。また、温水の局所的温度変化をなくすことができるため、熱交換器の下流に水温検知手段を設けてシーズヒーターへの電気出力をフィードバック制御する際の水温制御性や、熱交換器から吐出される水温の安定性を向上することも可能となる。 Further , according to another aspect of the present invention, in an instantaneous heat exchanger that instantaneously heats water flowing during use and continuously supplies hot water, an inlet is provided at one end and an outlet is provided at the other end. A heat exchange channel provided with water ports, a rod-shaped sheathed heater that is disposed in the heat exchange channel, and heats water that has flowed into the heat exchange channel, and is disposed in the heat exchange channel, Rectifying means for making the flow velocity distribution in the heat exchange flow path uniform, and the rectifying means has an inflow in which a plurality of the water inlets are arranged so as to cancel out the inflow flow speed into the heat exchange flow path. An instantaneous heat exchanger is provided which is a flow rate canceling means.
By doing so , heat transfer from the sheathed heater to the water can be performed uniformly around the sheathed heater, so that the local temperature change that has conventionally occurred on the sheathed heater surface due to non-uniform flow velocity distribution in the cross section of the heat exchange channel is avoided. It became possible to suppress. Therefore, since the exothermic line of the sheathed heater is not locally overheated or stress due to a local thermal gradient is not generated, it is possible to prevent a decrease in heater life. In addition, since the local temperature change of the hot water can be eliminated, the water temperature control means when the water temperature detection means is provided downstream of the heat exchanger and the electric output to the sheathed heater is feedback-controlled, and the heat is discharged from the heat exchanger. It is also possible to improve the stability of the water temperature.

また、前記整流手段は、前記シーズヒーターの発熱部の上流側に設置されていることを特徴とした。
そうすることで、確実に整流手段下流側の熱交換流路断面における流速分布を一様にすることが可能となる。また、熱交換流路の上流側で整流するため、熱交換流路全域にわたって整流手段を設ける必要がなく、熱交換流路内を流れる水の流動抵抗を極力少なく構成することができる。更に、整流手段はヒーターの非発熱部に設置した場合は熱による影響を受けないので、耐熱性を必要とする材料選定が不要となる。 Further, the rectifying means is installed upstream of the heat generating portion of the sheathed heater .
By doing so, it becomes possible to make uniform the flow velocity distribution in the cross section of the heat exchange channel on the downstream side of the rectifying means. Further, since rectification is performed on the upstream side of the heat exchange flow path, there is no need to provide a rectification means over the entire heat exchange flow path, and the flow resistance of the water flowing in the heat exchange flow path can be minimized. Furthermore, since the rectifying means is not affected by heat when it is installed in the non-heat generating portion of the heater, it is not necessary to select a material that requires heat resistance.

また、本発明の他の一態様によれば、人体洗浄装置に搭載され、使用するときに流れる水を瞬間的に加熱し、温水を連続して供給する瞬間式熱交換器において、一端に入水口を、他端に出水口をそれぞれ設けた熱交換流路と、前記熱交換流路内に配置し、前記熱交換流路内に流入した水を加熱する棒状のシーズヒーターと、前記熱交換流路内の流速分布を一様に近づける整流手段と、を備え、前記熱交換流路は直線的な形状であり、前記熱交換流路と前記シーズヒーターは同軸上に配置されており、前記シーズヒーターは、前記熱交換流路を前記一端から前記他端まで貫通し、前記整流手段は、前記入水口の中心軸を、前記熱交換流路及び前記シーズヒーターの中心軸に対して偏心させて配置して成ることを特徴とする瞬間式熱交換器が提供される。
そうすることで、熱交換流路内に流入する水は、ヒーターの中心軸周りに旋回流を起こしながら熱交換流路内を流れる。そのため特に新たな構成部材を必要とすることなく、熱交換流路断面における流速分布を一様にできる。 Further , according to another aspect of the present invention, an instantaneous heat exchanger mounted on a human body washing apparatus that instantaneously heats flowing water when used and continuously supplies hot water enters one end of the heat exchanger. A heat exchange channel provided with a water outlet at the other end, a rod-shaped sheathed heater that heats water that has flowed into the heat exchange channel, and the heat exchange channel. Rectifying means for making the flow velocity distribution in the flow path uniform, and the heat exchange flow path has a linear shape, and the heat exchange flow path and the sheathed heater are arranged on the same axis, The sheathed heater penetrates the heat exchange channel from the one end to the other end, and the rectifying means decenters the central axis of the water inlet with respect to the central axis of the heat exchange channel and the sheathed heater. Providing an instantaneous heat exchanger characterized by It is.
By doing so, the water flowing into the heat exchange channel flows in the heat exchange channel while causing a swirling flow around the central axis of the heater. Therefore, the flow velocity distribution in the cross section of the heat exchange channel can be made uniform without requiring a new component.

以上のように、本発明によれば、瞬間式熱交換器内の水の流れを一様化することによって、ヒーター周りの流速分布の偏りが無くなり、熱伝達が均一に行えるので、ヒーター周りの局所的な温度変化の発生を抑えることができる。それにより、局所的にヒーター内の発熱線が過熱されたり、熱勾配により発熱線への局所的なストレスがかかることで発生してしまう発熱線の断線を防げるため、ヒーターの耐久信頼性が向上する。また熱交換器から吐出される温水の局所的温度変化も抑制されるため、洗浄水温制御性をより向上させ、温度の均一で安定した温水を提供することが可能となる。 As described above, according to the present invention, by uniformizing the flow of water in the instantaneous heat exchanger, there is no bias in the flow velocity distribution around the heater, and heat transfer can be performed uniformly. Generation of local temperature changes can be suppressed. As a result, the heating wire in the heater is locally overheated, or the heating wire is disconnected due to local stress applied to the heating wire due to the thermal gradient, improving the durability reliability of the heater. To do. Moreover, since the local temperature change of the warm water discharged from the heat exchanger is also suppressed, it is possible to further improve the washing water temperature controllability and provide the warm water with a uniform and stable temperature.

以下、本発明を実施するための最良の形態について図面に基づき説明する。
本発明における実施の形態による瞬間式熱交換器の構造断面図を図１に、その瞬間式熱交換器を適用した人体洗浄装置の水路図を図２に示す。図２において、洗浄水を供給する給水配管１１には、上流側から順に、圧力調整弁１２、電磁弁１３、熱交換器１４が接続されている。また熱交換器１４の上流側には、熱交換器１４に供給される洗浄水の温度を検知する冷水サーミスタ２３が設けられている。熱交換器１４の出口部には、バキュームブレーカ３３が接続されており、バキュームブレーカ３３の下流は安全弁１５において二方に分岐し、一方は余剰の水を便器内に直接排出するための捨水配管１６へ、他方は流路切替兼流量調整弁１８が接続されている。流路切替兼流量調整弁１８の下流は二方に分岐し、一方は捨水路１９へ、他方はアキュームレータ２９を介して脈動発生装置１７に接続されている。脈動発生装置１７の下流には、流路切替弁２０を介して洗浄水を人体へ噴出する洗浄ノズル２１へ接続されている。なおこの例では、流路切替弁２０は洗浄ノズル２１と一体的に構成されている。 The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a structural cross-sectional view of an instantaneous heat exchanger according to an embodiment of the present invention, and FIG. 2 is a water channel diagram of a human body washing apparatus to which the instantaneous heat exchanger is applied. In FIG. 2, a pressure adjustment valve 12, a solenoid valve 13, and a heat exchanger 14 are connected in order from the upstream side to a water supply pipe 11 that supplies cleaning water. A chilled water thermistor 23 that detects the temperature of the washing water supplied to the heat exchanger 14 is provided on the upstream side of the heat exchanger 14. A vacuum breaker 33 is connected to the outlet of the heat exchanger 14, and the downstream of the vacuum breaker 33 branches in two at the safety valve 15, and one of them is a waste water for directly discharging excess water into the toilet bowl. A flow path switching / flow rate adjusting valve 18 is connected to the pipe 16 on the other side. The downstream of the flow path switching / flow control valve 18 branches in two directions, one being connected to the drainage channel 19 and the other being connected to the pulsation generator 17 via the accumulator 29. A downstream of the pulsation generator 17 is connected to a cleaning nozzle 21 that ejects cleaning water to the human body via a flow path switching valve 20. In this example, the flow path switching valve 20 is configured integrally with the cleaning nozzle 21.

人体洗浄装置に備えられた洗浄ボタン（図示せず）が押されると、電磁弁１３が開弁し、洗浄ノズル２１は装置内に収納された状態で流路への通水が開始される。通水を開始した洗浄水は、圧力調整弁１２によって所定の圧力まで減圧されるため、熱交換器１４に供給される洗浄水の給水圧力は常に一定に保たれる。熱交換器１４に供給された洗浄水は、所定の温度まで瞬間的に加熱され、流路切替兼流量調整弁１８によって所定の流量に調整されたうえで、洗浄ノズルの全てのノズル流路２５，２６，２７から吐出され、流路内の予熱を行う。流路内の予熱が充分に行われたら、流路切替兼流量調整弁１８によって捨水路１９への通水に切り替えられたうえで洗浄ノズル２１が所定の洗浄位置まで進出する。捨水路１９はノズル装置３５内に設けられたノズル洗浄室（図示せず）に接続されており、洗浄ノズル２１は胴体を洗浄されながら伸出する。また、洗浄ノズル２１の進出中には、ノズル内流路が流路切替弁２０によって所定の位置に切り替えられる。洗浄ノズル２１が所定の位置まで進出を完了すると、流路切替兼流量調整弁１８によって、洗浄ノズル２１側へと通水が切り替えられ、所定のノズル流路から、所定の流量にて洗浄水が吐出する。 When a washing button (not shown) provided in the human body washing apparatus is pushed, the electromagnetic valve 13 is opened, and water flow to the flow path is started while the washing nozzle 21 is housed in the apparatus. Since the wash water that has started to flow is depressurized to a predetermined pressure by the pressure regulating valve 12, the supply pressure of the wash water supplied to the heat exchanger 14 is always kept constant. The cleaning water supplied to the heat exchanger 14 is instantaneously heated to a predetermined temperature, adjusted to a predetermined flow rate by the flow path switching / flow rate adjusting valve 18, and then all the nozzle flow paths 25 of the cleaning nozzle. , 26, 27 to preheat the flow path. When the preheating in the flow path is sufficiently performed, the flow is switched to flow through the drainage path 19 by the flow path switching / flow rate adjusting valve 18, and the cleaning nozzle 21 advances to a predetermined cleaning position. The drainage channel 19 is connected to a nozzle cleaning chamber (not shown) provided in the nozzle device 35, and the cleaning nozzle 21 extends while the body is cleaned. Further, while the cleaning nozzle 21 is advanced, the flow path in the nozzle is switched to a predetermined position by the flow path switching valve 20. When the cleaning nozzle 21 completes its advance to a predetermined position, the flow switching / flow rate adjusting valve 18 switches the water flow to the cleaning nozzle 21 side, and the cleaning water is supplied from the predetermined nozzle channel at a predetermined flow rate. Discharge.

瞬間加熱式の人体洗浄装置は、貯湯式と違い、充分温かい温度（最高40℃程度）まで加熱できる洗浄水の流量が制限されているが、加熱された洗浄水は脈動発生装置１７によって脈動を与えられた状態で吐出されるため、少ない流量でも洗浄力とたっぷり感を確保した状態での洗浄が可能となる。本実施の形態では、脈動発生装置１７の上流にアキュームレータ２９を設けており、脈動発生装置１７で発生した圧力の脈動が上流へ伝播するのを防ぎ、熱交換器１４への影響を防止している。
洗浄水を所定の温度まで加熱するためのヒーター４１への通電制御は、冷水サーミスタ２３にて検知される熱交換器１４への入水温度と、温水サーミスタ４３にて検知される加熱された水温を制御器２８に取り込むことによって、フィードフォワード制御とフィードバック制御の組合せにて行われる。 Unlike the hot water storage system, the instantaneous heating type human body cleaning device has a limited flow rate of cleaning water that can be heated to a sufficiently warm temperature (up to about 40 ° C), but the heated cleaning water is pulsated by the pulsation generator 17. Since the ink is discharged in a given state, it is possible to perform the cleaning in a state where the cleaning power and a sufficient feeling are secured even with a small flow rate. In the present embodiment, an accumulator 29 is provided upstream of the pulsation generator 17 to prevent the pressure pulsation generated in the pulsation generator 17 from propagating upstream, and to prevent the heat exchanger 14 from being affected. Yes.
The energization control to the heater 41 for heating the wash water to a predetermined temperature is performed by adjusting the temperature of water entering the heat exchanger 14 detected by the cold water thermistor 23 and the heated water temperature detected by the hot water thermistor 43. By taking it into the controller 28, it is performed by a combination of feedforward control and feedback control.

次に、熱交換器１４の詳細構造について図１に基づき説明する。
熱交換器本体４２には、曲がりの無い直線的な直管形状の熱交換流路５９が設けられており、支持部材５６ａ，５６ｂにて、熱交換流路５９と同軸上に棒状のシーズヒーター４１が支持されている。またシーズヒーター４１の軸方向の位置決めは、固定部材５４ａ，５４ｂにて行っている。熱交換流路５９とシーズヒーター４１の気密性は、Ｏリング５３にて保たれており、Ｏリング５３はバックアップリング６０にて位置決めされている。シーズヒーター４１の外形はφ８、熱交換流路５９の内径はφ１３であり、流路のクリアランスは２．５ｍｍとなっている。熱交換流路５９の一端側面には入水口５５が設けられており、ここから加熱するための洗浄水が給水される。給水された洗浄水は熱交換流路５９の上流側、すなわちシーズヒーター４１の発熱部よりも上流側に設けられた整流手段５８によって熱交換流路断面における流速分布を一様にされたうえで、熱交換流路５９内に流れ込む。そして、熱交換流路５９の中を通過する際にシーズヒーター４１により所定の温度まで加熱され、熱交換流路５９の他端側面に設けられた出水口６２から流れ出す。出水口６２の下流側近傍流路内には温水サーミスタ４３が配置されており、シーズヒーター４１への通電コントロールによって洗浄水を所定の温度まで加熱制御（フィードバック制御）するために、出水口６２から流出した洗浄水の温度を検知している。その下流側にはヒーター４１の空焚きを防止するためにフロートスイッチ４４が設けられており、熱交換器内の満水状態を検知している。更にその下流側には、バキュームブレーカー４６と安全弁４８が設置されており、一次側流路が万一負圧になったときの負圧破壊機能と、調圧弁が故障などした際、熱交換器内に過剰な圧力がかかるのを防止する機能を果たしている。そして、加熱された洗浄水は最終的に吐出口５１から下流側の流量調整兼切替弁へと供給される。なお、図１中、符号４５はフロート、４７はバキュームブレーカー４６の弁体、４９，５０は安全弁の弁体およびスプリング、５２は流水の加熱により発生した気泡を小さくする気泡破砕板、６１は捨水配管接続口である。 Next, the detailed structure of the heat exchanger 14 is demonstrated based on FIG.
The heat exchanger main body 42 is provided with a straight straight pipe-shaped heat exchange flow path 59 without bending, and a bar-like sheathed heater coaxially with the heat exchange flow path 59 by support members 56a and 56b. 41 is supported. Further, the axial positioning of the sheathed heater 41 is performed by the fixing members 54a and 54b. The airtightness of the heat exchange channel 59 and the sheathed heater 41 is maintained by the O-ring 53, and the O-ring 53 is positioned by the backup ring 60. The outer shape of the sheathed heater 41 is φ8, the inner diameter of the heat exchange channel 59 is φ13, and the clearance of the channel is 2.5 mm. A water inlet 55 is provided on one side surface of the heat exchange channel 59, and cleaning water for heating is supplied from here. The supplied wash water has a uniform flow velocity distribution in the cross section of the heat exchange channel by the rectifying means 58 provided upstream of the heat exchange channel 59, that is, upstream of the heat generating portion of the sheathed heater 41. Then, it flows into the heat exchange channel 59. Then, when passing through the heat exchange flow path 59, the sheathed heater 41 is heated to a predetermined temperature and flows out from the water outlet 62 provided on the other end side surface of the heat exchange flow path 59. A hot water thermistor 43 is disposed in a flow path in the vicinity of the downstream side of the water outlet 62, and flows out from the water outlet 62 in order to control the heating of the washing water to a predetermined temperature (feedback control) by energization control to the sheathed heater 41. The temperature of the washed water is detected. A float switch 44 is provided on the downstream side of the heater 41 to prevent the heater 41 from emptying, and a full water state in the heat exchanger is detected. Further, a vacuum breaker 46 and a safety valve 48 are installed on the downstream side, and a negative pressure destruction function when the primary side flow path becomes negative pressure and a heat exchanger when the pressure regulating valve breaks down. It functions to prevent excessive pressure inside. The heated washing water is finally supplied from the discharge port 51 to the downstream flow rate adjustment / switching valve. In FIG. 1, reference numeral 45 is a float, 47 is a valve body of a vacuum breaker 46, 49 and 50 are valve bodies and springs of a safety valve, 52 is a bubble crushing plate for reducing bubbles generated by heating of flowing water, and 61 is discarded. Water pipe connection port.

ここで、整流手段５８の第１実施形態の構造を、図３に示す。
図３（ａ）では、中央にシーズヒーター４１を通す貫通穴７０があり、その周囲に、貫通したシーズヒーター４１によって複数の小穴が構成されるよう、複数の切欠８１が均等に円周配置されている。この小穴が抵抗となり、各小穴を流れる洗浄水は流速に比例した力を受けるため、高い流速成分ほどより大きく減速されるので、整流手段５８通過前の流速分布のばらつきが均一化されていく。また、切欠８１が複数配置された構成をとることによって、高い流速成分の一部が低い流速成分の方へ回り込むので、熱交換流路５９の断面における流速分布のばらつきをバランス良く均一化することができる。本構成によれば簡単な構成によって、流速分布の一様化を図ることが可能となる。 Here, the structure of 1st Embodiment of the rectification | straightening means 58 is shown in FIG.
In FIG. 3 (a), there is a through hole 70 through which the sheathed heater 41 is passed in the center, and a plurality of notches 81 are circumferentially arranged so that a plurality of small holes are formed by the sheathed heater 41 penetrating therethrough. ing. This small hole becomes a resistance, and the washing water flowing through each small hole receives a force proportional to the flow velocity. Therefore, the higher the flow velocity component, the more the speed is reduced. Therefore, the variation in the flow velocity distribution before passing through the rectifying means 58 is made uniform. In addition, by adopting a configuration in which a plurality of notches 81 are arranged, a part of the high flow velocity component circulates toward the low flow velocity component, so that the variation in the flow velocity distribution in the cross section of the heat exchange flow path 59 is made uniform with a good balance. Can do. According to this configuration, the flow velocity distribution can be made uniform with a simple configuration.

また、熱交換流路５９は直管形状であり、その中心と同軸上にシーズヒーター４１を配置することで、洗浄水流路５９を流れる洗浄水は、整流手段５８にて整えられた流速分布を維持したままで、流線を曲げられることなく等速度でかつシーズヒーター４１から均一に熱を受けながら加熱される。そのため、熱交換流路５９全域にわたり、シーズヒーター４１表面に局所的温度変化を生じさせることなく、洗浄水を均一に加熱することができる。 Further, the heat exchange channel 59 has a straight pipe shape, and by arranging the sheathed heater 41 coaxially with the center thereof, the cleaning water flowing through the cleaning water channel 59 has a flow velocity distribution adjusted by the rectifying means 58. While being maintained, the streamline is heated at a constant speed without being bent while receiving heat uniformly from the sheathed heater 41. Therefore, the washing water can be uniformly heated without causing a local temperature change on the surface of the sheathed heater 41 over the entire heat exchange flow path 59.

本構成では、熱交換流路５９の上流側で整流するため、熱交換流路５９全域にわたって整流手段を設ける必要がなく、熱交換流路抵抗を極力少なく構成することが可能となっている。更に、整流手段５８はシーズヒーター４１の非発熱部に設置した場合は、熱による影響を受けないので、耐熱性を必要とする材料選定が不要となる。 In this configuration, since rectification is performed on the upstream side of the heat exchange flow path 59, it is not necessary to provide a rectification means over the entire heat exchange flow path 59, and it is possible to configure the heat exchange flow path resistance as much as possible. Further, when the rectifying means 58 is installed in the non-heat generating portion of the sheathed heater 41, it is not affected by heat, so that it is not necessary to select a material that requires heat resistance.

なお、第１実施形態の整流手段５８は、前述した構成とは他の構成を取ることができる。例えば、図３（ｂ）に示されるように、整流手段５８’をメッシュ構造９１を複数の絞りとして構成することで、同様な整流効果が期待できる。本構成によると、図３（ａ）での実施の形態に比べて、多数の絞り部が配置されることになるので、よりきめ細かに整流することが可能となる。図３（ａ），（ｂ）の実施の形態では、整流手段５８，５８’を多段構成として採用することにより更なる整流効果が期待できることは言うまでもない。 In addition, the rectification | straightening means 58 of 1st Embodiment can take another structure from the structure mentioned above. For example, as shown in FIG. 3B, a similar rectifying effect can be expected by configuring the rectifying means 58 'with the mesh structure 91 as a plurality of stops. According to this configuration, since a large number of apertures are arranged as compared with the embodiment in FIG. 3A, it is possible to rectify more finely. In the embodiment shown in FIGS. 3A and 3B, it is needless to say that further rectification effect can be expected by adopting the rectification means 58, 58 'as a multi-stage configuration.

また、図３（ｃ）に示される目の粗いスポンジのような多孔体を整流手段５８”として用いることも、同じ作用効果をもたらすには有効である。 Further, using a porous body such as a coarse sponge shown in FIG. 3C as the rectifying means 58 ″ is also effective in providing the same effect.

次に、本発明における整流手段のその他の実施の形態を図４，５，６に示す。なお、前述した実施形態と同じ構成については、同じ符合を付し、その説明を省いている。 Next, other embodiments of the rectifying means in the present invention are shown in FIGS. In addition, about the same structure as embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

図４は整流手段の第２の実施の形態における熱交換流路上流側の模式断面図で、洗浄水は入水口５５より熱交換流路５９へ流入する前に、一度入水口５５や熱交換流路５９の径より大きな圧力室７４へ流入する。入水口５５から流入した洗浄水は、圧力室７４にて急拡大し、流入流速成分を殆ど失う。即ち、圧力室７４への流入流速エネルギーは、一旦圧力エネルギーに変換されてから熱交換流路５９に流れ込むため、入水口５５からの洗浄水流入流速の影響を受けることなく、流れの方向を熱交換流路５９の軸方向へと変換することができ、熱交換流路５９内の流速分布の一様化を図ることができる。 FIG. 4 is a schematic cross-sectional view of the upstream side of the heat exchange channel in the second embodiment of the rectifying means. Before the washing water flows into the heat exchange channel 59 from the water inlet 55, the water inlet 55 and heat exchange are once performed. It flows into the pressure chamber 74 larger than the diameter of the flow path 59. The wash water flowing in from the water inlet 55 rapidly expands in the pressure chamber 74 and almost loses the inflow velocity component. That is, the flow velocity energy flowing into the pressure chamber 74 is once converted into pressure energy and then flows into the heat exchange flow path 59, so that the flow direction is heated without being affected by the flow velocity of the washing water flowing from the water inlet 55. Conversion to the axial direction of the exchange flow path 59 is possible, and the flow velocity distribution in the heat exchange flow path 59 can be made uniform.

図５（ａ）は整流手段の第３の実施の形態における、熱交換流路の軸方向に対して直交する断面図であり、洗浄水の入水のさせ方を工夫することによっても整流手段としての効果が得られる例を示している。この整流手段は入水口７５を熱交換流路軸心に対して対称的に２つ（７５ａ，７５ｂ）配置したもので、熱交換流路５９に向かって異なる方向に入水口を配置することで流入方向の速度成分を相殺することができるため、熱交換流路５９内の流速分布の一様化を図ることができる。また、この場合入水口７５が多ければ多いほど熱交換流路５９に、よりバランス良く入水させることができる。入水口を多数配置したものと同様な効果を得るためには、図５（ｂ）に示すような構造も効果的である。本構成では、入水口８５のすぐ下流に、熱交換流路５９に直接連通していない予備室８１を設け、更に第２の入水口７９を介して熱交換流路５９へと連通させている。本構成によれば、コンパクトな構成で、熱交換流路５９への入水口を多数設けることが可能となり、熱交換流路断面の流速分布をより一様にすることができる。 FIG. 5 (a) is a cross-sectional view orthogonal to the axial direction of the heat exchange flow path in the third embodiment of the rectifying means. The example which can obtain the effect of is shown. In this rectifying means, two inlets 75 (75a, 75b) are arranged symmetrically with respect to the heat exchange channel axis, and the inlets are arranged in different directions toward the heat exchange channel 59. Since the velocity component in the inflow direction can be canceled out, the flow velocity distribution in the heat exchange channel 59 can be made uniform. In this case, the more water inlets 75 are, the more water can be introduced into the heat exchange channel 59 in a balanced manner. In order to obtain the same effect as that provided with a large number of water inlets, a structure as shown in FIG. 5B is also effective. In this configuration, a preliminary chamber 81 that is not directly connected to the heat exchange channel 59 is provided immediately downstream of the water inlet 85, and further communicated with the heat exchange channel 59 via the second water inlet 79. . According to this configuration, it is possible to provide a large number of water inlets to the heat exchange channel 59 with a compact configuration, and the flow velocity distribution in the cross section of the heat exchange channel can be made more uniform.

ここで、第１から第３の実施の形態における整流手段は複数の手段の組合せとして構成することも可能であり、その場合はより効果的に熱交換流路断面における流速分布の均一化を図れることが言うまでもない。 Here, the rectifying means in the first to third embodiments can be configured as a combination of a plurality of means, and in that case, the flow velocity distribution in the cross section of the heat exchange channel can be more effectively uniformed. Needless to say.

図６は整流手段の第４の実施の形態における熱交換流路の軸方向に対して直交する断面図である。入水口９５の中心軸を、前記熱交換流路５９およびシーズヒーター４１の中心軸に対して偏心させて配置し入水させることで、シーズヒーター４１の中心軸周りに旋回流を起こしながら、熱交換流路５９内を洗浄水が流れる。そのため特に新たな構成部材を必要とすることなく、熱交換流路断面における流速分布一様化を図ることが可能となる。 FIG. 6 is a cross-sectional view orthogonal to the axial direction of the heat exchange flow path in the fourth embodiment of the rectifying means. The center axis of the water inlet 95 is eccentric with respect to the heat exchange flow path 59 and the center axis of the sheathed heater 41, and the water is exchanged while causing a swirling flow around the center axis of the sheathed heater 41. Wash water flows through the flow path 59. Therefore, it is possible to make the flow velocity distribution uniform in the cross section of the heat exchange flow path without requiring any new components.

本実施の形態においても、入水口を複数設けたり図５（ｂ）の例のように、入水口を２段構成とすることで、更に効果的に流速分布の一様化を図れることは勿論である。 Also in this embodiment, by providing a plurality of water inlets or having a two-stage water inlet as in the example of FIG. 5B, the flow velocity distribution can be more effectively uniformed. It is.

以上のように、本発明によれば、入水口と熱交換流路の間に整流手段を設けて熱交換流路内における洗浄水の流速分布の一様化を図ることにより、シーズヒーターから洗浄水への熱伝達を均一にすることが可能となる。その結果、シーズヒーター表面の局所的温度変化が抑えられ、局所的にヒーター内の発熱線が過熱されてしまったり、熱勾配による発熱線へのストレスが発生してしまい、最終的には発熱線の断線を招いてしまうという問題が解消され、ヒーターの耐久信頼性を向上することができる。また熱交換器から吐出される温水の局所的温度変化も抑制されるため、洗浄水温制御性をより向上させ、温度の均一で安定した温水を提供することが可能となる。 As described above, according to the present invention, by providing a rectifying means between the water inlet and the heat exchange flow path, the flow rate distribution of the wash water in the heat exchange flow path is made uniform, thereby cleaning from the sheathed heater. It becomes possible to make the heat transfer to water uniform. As a result, the local temperature change on the surface of the sheathed heater is suppressed, the heating wire in the heater is locally overheated, or stress on the heating wire due to the thermal gradient occurs, and eventually the heating wire The problem of causing disconnection of the heater is solved, and the durability reliability of the heater can be improved. Moreover, since the local temperature change of the warm water discharged from the heat exchanger is also suppressed, it is possible to further improve the washing water temperature controllability and provide the warm water with a uniform and stable temperature.

なお、本発明における整流手段の構成は、本発明の主旨を逸脱しない範囲で、シーズヒーター以外のヒーターを用いた瞬間式熱交換器にも適用可能であり、同様な整流効果が得られることは言うまでもない。 The configuration of the rectifying means in the present invention can be applied to an instantaneous heat exchanger using a heater other than the sheathed heater without departing from the gist of the present invention, and a similar rectifying effect can be obtained. Needless to say.

本発明における実施の形態による瞬間式熱交換器の断面図Sectional drawing of the instantaneous heat exchanger by embodiment in this invention 本発明における実施の形態による水路図Waterway map according to embodiments of the present invention 本発明における整流手段の第１の実施の形態による構造図Structure diagram according to the first embodiment of the rectifying means in the present invention 本発明における整流手段の第２の実施の形態による入水口付近の断面図Sectional drawing of water inlet vicinity by 2nd Embodiment of the rectification | straightening means in this invention 本発明における整流手段の第３の実施の形態による入水口部分の断面図Sectional drawing of the water inlet part by 3rd Embodiment of the rectification | straightening means in this invention 本発明における整流手段の第４の実施の形態による入水口部分の断面図Sectional drawing of the water inlet part by 4th Embodiment of the rectification | straightening means in this invention 従来技術における瞬間式熱交換器の断面図Cross-sectional view of instantaneous heat exchanger in the prior art 従来技術における瞬間式熱交換器を用いた温水洗浄装置のブロック図Block diagram of a hot water cleaning device using an instantaneous heat exchanger in the prior art

Explanation of symbols

４１シーズヒーター
５５入水口
５８整流手段
５８’ 整流手段
５８” 整流手段
５９熱交換流路
６２出水口
７４圧力緩衝手段（圧力室）
７５入水口（流入流速相殺手段）
８１切欠（絞り流路）
９５入水口（旋回流入手段）
41 Sheath heater 55 Water inlet 58 Rectifier 58 'Rectifier 58 "Rectifier 59 Heat exchange flow path 62 Water outlet 74 Pressure buffer means (pressure chamber)
75 water inlet (inflow velocity canceling means)
81 Notch (throttle channel)
95 Water inlet (turning inflow means)

Claims

In the instantaneous heat exchanger that is mounted on the human body washing device and instantaneously heats the flowing water when it is used and supplies hot water continuously,
A heat exchange flow path having a water inlet at one end and a water outlet at the other end;
A rod-shaped sheathed heater that is disposed in the heat exchange flow path and heats water that has flowed into the heat exchange flow path;
A rectifying means that is disposed downstream of the water inlet and has a through hole in which the sheathed heater is penetrated in the center, and a plurality of notches formed around the through hole,
Equipped with a,
Each of the plurality of notches becomes a small hole surrounding the sheathed heater,
An instantaneous heat exchanger characterized in that the water flow supplied to the water inlet is made to flow into the heat exchange channel through the small holes so that the flow velocity distribution in the heat exchange channel is made closer to uniform .

In the instantaneous heat exchanger that is mounted on the human body washing device and instantaneously heats the flowing water when it is used and supplies hot water continuously,
A heat exchange flow path having a water inlet at one end and a water outlet at the other end;
A rod-shaped sheathed heater that is disposed in the heat exchange flow path and heats water that has flowed into the heat exchange flow path;
A rectifying means that is disposed on the downstream side of the water inlet and has a through-hole through which the sheathed heater is penetrated in the center, and a mesh structure provided around the through-hole;
Equipped with a,
Instantaneous heat exchanger characterized in that water flow supplied to the water inlet is made to flow into the heat exchange flow path through the mesh structure, thereby making the flow velocity distribution in the heat exchange flow path uniform . .

In the instantaneous heat exchanger that is mounted on the human body washing device and instantaneously heats the flowing water when it is used and supplies hot water continuously,
A heat exchange flow path having a water inlet at one end and a water outlet at the other end;
A rod-shaped sheathed heater that is disposed in the heat exchange flow path and heats water that has flowed into the heat exchange flow path;
A rectifying means that is disposed on the downstream side of the water inlet and has a through-hole through which the sheathed heater is penetrated in the center, and a porous body provided around the through-hole,
Equipped with a,
Instantaneous heat exchanger characterized in that the flow rate distribution in the heat exchange channel is made closer to uniform by allowing the water supplied to the water inlet to flow into the heat exchange channel via the porous body . .

In the instantaneous heat exchanger that is mounted on the human body washing device and instantaneously heats the flowing water when it is used and supplies hot water continuously,
A linear heat exchange channel provided between the water inlet and the water outlet;
A rod-shaped sheathed heater that is disposed coaxially with the heat exchange channel in the heat exchange channel and heats the water that has flowed into the heat exchange channel,
Rectifying means provided between the water inlet and the heat exchange flow path;
With
The rectifying means is a pressure chamber having a larger diameter than the water inlet and the heat exchange channel,
The sheath heater passes through the pressure chamber,
The water inlet direction from the water inlet to the pressure chamber and the axial direction of the heat exchange flow path are substantially perpendicular,
The flow velocity energy distribution in the heat exchange channel is made closer to uniform by converting the flow velocity energy of water supplied to the water inlet into pressure energy in the pressure chamber and then flowing into the heat exchange channel. Characteristic instantaneous heat exchanger.

In the instantaneous heat exchanger that instantaneously heats the flowing water when using it and supplies hot water continuously,
A heat exchange flow path having a water inlet at one end and a water outlet at the other end;
A rod-shaped sheathed heater that is disposed in the heat exchange flow path and heats water that has flowed into the heat exchange flow path;
A rectifying means disposed in the heat exchange flow path and uniformizing a flow velocity distribution in the heat exchange flow path;
Equipped with a,
The instantaneous heat exchanger according to claim 1, wherein the rectifying means is an inflow velocity canceling means in which a plurality of the water inlets are arranged so that the inflow velocity into the heat exchange channel is offset .

The instantaneous heat exchanger according to any one of claims 1 to 3 ,
The instantaneous heat exchanger is characterized in that the rectifying means is installed on the upstream side of the heat generating portion of the sheathed heater.

In the instant heat exchanger according to any one of claims 1 to 3 ,
The instantaneous heat exchanger, wherein the wash water flowing in from the water inlet flows into the rectifying means after changing the flow direction to the axial direction of the heat exchange flow path.

In the instantaneous heat exchanger that is mounted on the human body washing device and instantaneously heats the flowing water when it is used and supplies hot water continuously,
A heat exchange flow path having a water inlet at one end and a water outlet at the other end;
A rod-shaped sheathed heater that is disposed in the heat exchange flow path and heats water that has flowed into the heat exchange flow path;
Rectifying means for making the flow velocity distribution in the heat exchange flow path uniform , and
With
The heat exchange channel has a linear shape,
The heat exchange channel and the sheathed heater are arranged on the same axis,
The sheathed heater passes through the heat exchange channel from the one end to the other end,
The instantaneous flow heat exchanger is characterized in that the rectifying means is arranged such that a central axis of the water inlet is eccentric with respect to a central axis of the heat exchange flow path and the sheathed heater.