JP2010025363A - Hot water supply device - Google Patents

Hot water supply device Download PDF

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JP2010025363A
JP2010025363A JP2008183673A JP2008183673A JP2010025363A JP 2010025363 A JP2010025363 A JP 2010025363A JP 2008183673 A JP2008183673 A JP 2008183673A JP 2008183673 A JP2008183673 A JP 2008183673A JP 2010025363 A JP2010025363 A JP 2010025363A
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hot water
tank
heat pump
flow path
water supply
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JP5217715B2 (en
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Tadashi Yanagisawa
忠 柳澤
Yoshihisa Urakawa
芳久 浦川
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Panasonic Corp
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Panasonic Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water supply device not consuming electric power in switching flow channels. <P>SOLUTION: This hot water supply device includes a hot water storage tank 1 for storing hot water, a heating means 2 for heating the hot water in the hot water storage tank 1, and a flow channel switching means 100 for distributing the hot water heated by the heating means 2 to an upper section or a lower section of the hot water storage tank 1, and a shape-memory spring and a closing valve are used as the flow channel switching means 100. As flow channels are switched according to a temperature of the hot water heated by the heating means, electric power is not consumed in switching the flow channels, and power-saving and cost reduction are achieved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、貯湯式の給湯装置に関し、特に流路を切り換えるための装置に関するものである。   The present invention relates to a hot water storage type hot water supply apparatus, and more particularly to an apparatus for switching a flow path.

従来、この種の給湯装置は、図７に示されているように、湯水を貯える貯湯槽１と、加熱手段であるヒートポンプ熱源２とを備えており、給水源から供給された水は給水管３を通って分岐され、それぞれ貯湯槽２の下部と給湯混合弁４の水側に供給されている。   Conventionally, as shown in FIG. 7, this type of hot water supply apparatus includes a hot water storage tank 1 for storing hot water and a heat pump heat source 2 as heating means, and the water supplied from the water supply source is a water supply pipe. The water is branched through 3 and supplied to the lower part of the hot water tank 2 and the water side of the hot water supply mixing valve 4 respectively.

そして貯湯槽１の下部から入水された水は貯湯槽１に貯まり、貯湯槽１の下部とヒートポンプ熱源２がヒートポンプ往き配管６で接続されており、貯湯槽１に貯えられた湯水は、貯湯槽１の下部からヒートポンプ往き配管６を経て、沸き上げポンプ５を介してヒートポンプ熱源２に供給される。   And the water which entered from the lower part of the hot water tank 1 is stored in the hot water tank 1, and the lower part of the hot water tank 1 and the heat pump heat source 2 are connected by the heat pump outgoing pipe 6, and the hot water stored in the hot water tank 1 is stored in the hot water tank. 1 is supplied to the heat pump heat source 2 via the heating pump 5 from the lower part of 1 and the heating pump 5.

一方、ヒートポンプ熱源２にはコンプレッサー７が内蔵され、ヒートポンプ熱源２に入水された湯水を熱交換して温度を上げ、生成した高温水はヒートポンプ戻り配管８を経て、タンク上戻り配管１１から貯湯槽１の上部に戻る構成となっている。   On the other hand, the heat pump heat source 2 has a built-in compressor 7, heat exchange is performed on hot water that has entered the heat pump heat source 2 to increase the temperature, and the generated high-temperature water passes through the heat pump return pipe 8 and from the tank return pipe 11 to the hot water storage tank. It is the structure which returns to the upper part of 1.

しかしながら、ヒートポンプ熱源２の立ち上がり時などには、ヒートポンプ熱源２で生成される湯が上がりきっていない状態で貯湯槽１の上部に戻されてしまうと、貯湯槽１の上部が低温水で満たされてしまうという課題を有していたため、従来の給湯装置においては、ヒートポンプ戻り配管８とヒートポンプ上戻り配管１１との間に三方弁１０が設けられており、三方弁１０の一方向に貯湯槽１の下部へと湯水を送るためのタンク下戻り配管９を設けており、三方弁１０を切り換えることによってタンク上戻り配管１１もしくはタンク下戻り配管９のいずれかの流路を選択できるようになっている（例えば、特許文献１参照）。   However, when the heat pump heat source 2 rises or the like, the hot water generated by the heat pump heat source 2 is returned to the upper part of the hot water tank 1 in a state in which the hot pump heat source 2 is not fully raised, and the upper part of the hot water tank 1 is filled with low temperature water. In the conventional hot water supply apparatus, the three-way valve 10 is provided between the heat pump return pipe 8 and the heat pump upper return pipe 11, and the hot water tank 1 is provided in one direction of the three-way valve 10. A tank lower return pipe 9 for sending hot water to the lower part of the tank is provided. By switching the three-way valve 10, either the tank upper return pipe 11 or the tank lower return pipe 9 can be selected. (For example, refer to Patent Document 1).

次に、三方弁１０の動作について説明する。ヒートポンプ熱源２の入口には、入水温度を測定するための入水温度センサー１２と、ヒートポンプ熱源２の出口には、出湯温度を測定するための出湯温度センサー１３が設けられており、測定された温度データは、制御基板１４に送られる。   Next, the operation of the three-way valve 10 will be described. The inlet temperature of the heat pump heat source 2 is provided with an incoming water temperature sensor 12 for measuring the incoming water temperature, and the outlet of the heat pump heat source 2 is provided with a hot water temperature sensor 13 for measuring the outgoing hot water temperature. Data is sent to the control board 14.

出湯温度センサー１３が低い（例えば、６０度未満）場合、貯湯槽１の上部にヒートポンプ熱源２から出てくる湯水を戻してしまうと、貯湯槽１の上部に貯えられている高温水と混ざり合ってしまい、貯湯槽１の上部の湯水の温度が低下してしまうので、給湯装置全体の効率が低下してしまう。そこで、出湯温度センサー１３が低い場合には、三方弁１０を切り換えることによって、ヒートポンプ熱源２から出てくる湯水を貯湯槽１の下部へ戻している。   When the hot water temperature sensor 13 is low (for example, less than 60 degrees), if the hot water coming out of the heat pump heat source 2 is returned to the upper part of the hot water tank 1, it mixes with the hot water stored in the upper part of the hot water tank 1. As a result, the temperature of the hot water in the upper part of the hot water tank 1 is lowered, so that the efficiency of the entire hot water supply device is lowered. Therefore, when the hot water temperature sensor 13 is low, the hot water discharged from the heat pump heat source 2 is returned to the lower part of the hot water tank 1 by switching the three-way valve 10.

また、出湯温度センサー１３が高い（例えば、６０度以上）場合には三方弁１０を切り換えることによって、ヒートポンプ熱源２から出てくる湯水をタンク上戻り配管１１を経て貯湯槽１の上部に供給する。そして貯湯槽１の上部に貯えられた高温水は、貯湯槽１の天部にある出湯配管から出湯し、給湯混合弁４で湯と水とが混合される。そして給湯混合弁４の下流側にある給湯温度センサー１５で検知する温度が、ユーザーが設定した給湯温度となるように、給湯混合弁４がフィードバック制御される。   When the hot water temperature sensor 13 is high (for example, 60 degrees or more), the hot water discharged from the heat pump heat source 2 is supplied to the upper portion of the hot water tank 1 through the tank return pipe 11 by switching the three-way valve 10. . The hot water stored in the upper part of the hot water tank 1 is discharged from the hot water supply pipe in the top of the hot water tank 1, and hot water and water are mixed by the hot water supply mixing valve 4. The hot water mixing valve 4 is feedback-controlled so that the temperature detected by the hot water temperature sensor 15 on the downstream side of the hot water mixing valve 4 becomes the hot water temperature set by the user.

次に、従来の三方弁１０の構成について説明する。図８、図９は、三方弁１０の要部断
面図である。図８、図９において、三方弁１０は、ヒートポンプ戻り管８が接続されるヒートポンプ戻り口１８、タンク下戻り配管９が接続されるタンク下戻り口２０、タンク上戻り配管１１が接続されるタンク上戻り口２１の３つの開放口を有し、それぞれ３つの配管に接続されて流路を形成している。 Next, the configuration of the conventional three-way valve 10 will be described. 8 and 9 are cross-sectional views of the main part of the three-way valve 10. 8 and 9, the three-way valve 10 includes a heat pump return port 18 to which the heat pump return pipe 8 is connected, a tank lower return port 20 to which the tank lower return pipe 9 is connected, and a tank to which the tank upper return pipe 11 is connected. The upper return port 21 has three open ports, each connected to three pipes to form a flow path.

そして３つの開放口のいずれの口同士を通水させるかを切り換えるためのボールバルブ１９が設けられており、ボールバルブ１９に設けられたＬ字の流路を切り換えることで、ヒートポンプ戻り口１８とタンク下戻り口２０とを連通する流路、もしくはヒートポンプ戻り口１８とタンク上戻り口２１とを連通する流路とを切り換えることができる。図８は、タンク下戻り口２０とヒートポンプ戻り口１８とが連通するようにボールバルブ１９を駆動した図であり、ヒーポン戻り口１８とタンク上戻り口２１とは、ボールバルブ１９とパッキン２２とで閉止されて湯水が流れなくなっている。また図９は、タンク上戻り口２１とヒートポンプ戻り口１８とが連通するようにボールバルブ１９を駆動した図であり、ヒーポン戻り口１８とタンク下戻り口２０とはボールバルブ１９とパッキン２２とで閉止されて湯水が流れなくなっている。   A ball valve 19 is provided for switching which of the three open ports allows water to flow. By switching the L-shaped flow path provided in the ball valve 19, the heat pump return port 18 and The flow path communicating with the tank lower return port 20 or the flow path communicating with the heat pump return port 18 and the tank upper return port 21 can be switched. FIG. 8 is a diagram in which the ball valve 19 is driven so that the tank lower return port 20 and the heat pump return port 18 communicate with each other. The heatpone return port 18 and the tank upper return port 21 include the ball valve 19 and the packing 22. The hot water is no longer flowing because it was closed at. FIG. 9 is a diagram in which the ball valve 19 is driven so that the tank upper return port 21 and the heat pump return port 18 communicate with each other. The heatpone return port 18 and the tank lower return port 20 include the ball valve 19 and the packing 22. The hot water is no longer flowing because it was closed at.

次に、三方弁の駆動について説明する。ボールバルブ１９とステム２３はスリット嵌合で連結されており、ステム２３とボールバルブ１９は同時に回転する。流路を切り換える場合は、モーター２４を回転させ、モーター２４の回転をギア２５によって減速させギア２５に連結されているステム２３を回転させることにより、ボールバルブ１９を所定の位置まで回転させることが可能となる。前記モーター２４は制御基板１４に接続され、モーターの発進、停止が制御される。
特開２００６−１７４１７号公報 Next, driving of the three-way valve will be described. The ball valve 19 and the stem 23 are connected by slit fitting, and the stem 23 and the ball valve 19 rotate simultaneously. When switching the flow path, the ball valve 19 is rotated to a predetermined position by rotating the motor 24, decelerating the rotation of the motor 24 by the gear 25, and rotating the stem 23 connected to the gear 25. It becomes possible. The motor 24 is connected to the control board 14, and the start and stop of the motor are controlled.
JP 2006-17417 A

しかしながら、前記従来の給湯装置においては、三方弁１０の駆動にモーターを使用しているため、電力が消費されてしまうという課題を有していた。   However, since the conventional hot water supply apparatus uses a motor to drive the three-way valve 10, there is a problem that power is consumed.

本発明は、前記従来の課題を解決するもので、流路切替時に電力を消費することのない給湯装置を提供することを目的とする。   This invention solves the said conventional subject, and it aims at providing the hot-water supply apparatus which does not consume electric power at the time of flow path switching.

前記従来の課題を解決するために、本発明の給湯装置は、湯水を貯える貯湯槽と、前記貯湯槽内の湯水を加熱する加熱手段と、前記加熱手段により加熱された湯水を前記貯湯槽の上部または下部へ送る流路切換手段とを備え、前記流路切換手段として形状記憶バネと閉止弁を用いたことにより、加熱手段によって加熱された温水の温度に応じて流路を切り替えることが可能な構成となるため、流路切替時に電力を消費することがなく、省電力化さらには低コスト化を実現することができる。   In order to solve the conventional problems, a hot water supply apparatus of the present invention includes a hot water storage tank for storing hot water, heating means for heating hot water in the hot water storage tank, and hot water heated by the heating means in the hot water storage tank. It is possible to switch the flow path according to the temperature of the hot water heated by the heating means by using a shape memory spring and a shut-off valve as the flow path switching means. Therefore, it is possible to realize power saving and cost reduction without consuming electric power at the time of switching the flow path.

本発明は、流路切替時に電力を消費することのない給湯装置を提供することができる。   The present invention can provide a hot water supply device that does not consume electric power when the flow path is switched.

第１の発明の給湯装置は、湯水を貯える貯湯槽と、前記貯湯槽内の湯水を加熱する加熱手段と、前記加熱手段により加熱された湯水を前記貯湯槽の上部または下部へ送る流路切換手段とを備え、前記流路切換手段として形状記憶バネと閉止弁を用いたことにより、加熱手段によって加熱された温水の温度に応じて流路を切り替えることが可能な構成となるため、流路切替時に電力を消費することがなく、省電力化さらには低コスト化を実現することができる。   A hot water supply apparatus according to a first aspect of the present invention is a hot water storage tank for storing hot water, heating means for heating the hot water in the hot water storage tank, and channel switching for sending hot water heated by the heating means to the upper or lower part of the hot water storage tank. And a shape memory spring and a stop valve are used as the flow path switching means, so that the flow path can be switched according to the temperature of the hot water heated by the heating means. No power is consumed at the time of switching, and power saving and cost reduction can be realized.

第２の発明の給湯装置は、特に第１の発明において、前記流路切換手段として温度特性が互いに異なる２種類の形状記憶バネを用いることにより、温度特性が互いに異なる２種類の形状記憶バネを使用するので、１つ当たりの形状記憶バネのサイズを小さくすることができ、流路切替手段の構造をコンパクトにすることができる。   The hot water supply apparatus according to the second invention is, in particular, in the first invention, by using two kinds of shape memory springs having different temperature characteristics as the flow path switching means, two kinds of shape memory springs having different temperature characteristics are used. Since it is used, the size of each shape memory spring can be reduced, and the structure of the flow path switching means can be made compact.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   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.

（実施の形態１）
図１は、本発明の実施の形態における給湯装置の構成図である。なお、図７に示す従来の実施の形態と同じ構成部位については、同じ符号を付してその説明を省略する。なお、本実施の形態と従来の実施の形態との構成の差異は、図７に示す三方弁１０の代わりに、流路切替手段である流路切替装置１００を用いたことである。 (Embodiment 1)
FIG. 1 is a configuration diagram of a hot water supply apparatus according to an embodiment of the present invention. In addition, about the same component as the conventional embodiment shown in FIG. 7, the same code | symbol is attached | subjected and the description is abbreviate | omitted. The difference in configuration between the present embodiment and the conventional embodiment is that a flow path switching device 100 that is a flow path switching means is used instead of the three-way valve 10 shown in FIG.

以上のように構成された給湯装置において、次に、流路切替装置１００の構成について説明する。   Next, the configuration of the flow path switching device 100 in the hot water supply device configured as described above will be described.

図２、図３は、本発明の実施の形態１における流路切替装置１００の断面図を示す。流路切替装置１００の外壁は、左ボディ２６と右ボディ２７で構成され、接合部分にはＯリング２８でシールされている。そして、従来の給湯装置に使用されていた三方弁１０と同じように、ヒートポンプ戻り管８が接続されるヒートポンプ戻り口１８、タンク下戻り配管９が接続されるタンク下戻り口２０、タンク上戻り配管１１が接続されるタンク上戻り口２１の３つの開放口を有し、それぞれ３つの配管に接続されて流路を形成している。   2 and 3 are sectional views of the flow path switching device 100 according to Embodiment 1 of the present invention. The outer wall of the flow path switching device 100 includes a left body 26 and a right body 27, and a joint portion is sealed with an O-ring 28. And, like the three-way valve 10 used in the conventional hot water supply device, the heat pump return port 18 to which the heat pump return pipe 8 is connected, the tank lower return port 20 to which the tank lower return pipe 9 is connected, and the tank upper return The tank 11 has three open ports, the tank upper return port 21 to which the pipe 11 is connected, and is connected to each of the three pipes to form a flow path.

右ボディ２７には、軸受け２９が設けられており、軸受け２９の中に作動軸３０が内挿され、図２の紙面に向かって左右方向にスライドするように取り付けられている。作動軸３０は、閉止弁としてパッキンＡ３１およびパッキンＢ３２を有しており、作動軸３０が左右にスライドして動くことで、パッキンＡ３１でタンク上戻り口２１に連通する流路を塞ぎ、パッキンＢ３２でタンク下戻り口２０に連通する流路を塞ぐ構成となっている。   The right body 27 is provided with a bearing 29, and an operating shaft 30 is inserted into the bearing 29 and attached so as to slide in the left-right direction toward the paper surface of FIG. The operating shaft 30 has a packing A31 and a packing B32 as closing valves. When the operating shaft 30 slides and moves to the left and right, the flow path communicating with the tank return port 21 is closed by the packing A31, and the packing B32 Thus, the flow path communicating with the tank lower return port 20 is closed.

図４は、作動軸３０の要部拡大図である。図４に示すように、作動軸３０には支持具４０を備えており、支持具４０と左ボディ２６、支持具４０と右ボディ２７とをバネで連結する構成となっている。なお支持具４０の形状は、特に決まった形状に限定されるわけではないが、本実施の形態では、略円形状を成しており、その径Ｈは、タンク下戻り口２０およびタンク上戻り口２１へと連通する流路の径ｈよりも大きい値となっている。   FIG. 4 is an enlarged view of a main part of the operating shaft 30. As shown in FIG. 4, the operating shaft 30 includes a support 40, and the support 40 and the left body 26, and the support 40 and the right body 27 are connected by a spring. The shape of the support 40 is not particularly limited to a specific shape, but in the present embodiment, it has a substantially circular shape, and its diameter H is the tank lower return port 20 and the tank upper return. The value is larger than the diameter h of the flow path communicating with the mouth 21.

そして支持具４０と左ボディ２６とは形状記憶バネ３３で連結されており、支持具４０と右ボディ２７とはバネ３４で連結されている。なお、本実施の形態では形状記憶バネ３３を上下に２本設けて、左ボディと支持具４０とを連結しているが、形状記憶バネ３３の本数およびバネ３４の本数は２本に限定されることなく、２本以上の複数本のバネを用いて連結してもよい。   The support 40 and the left body 26 are connected by a shape memory spring 33, and the support 40 and the right body 27 are connected by a spring 34. In the present embodiment, two shape memory springs 33 are provided on the upper and lower sides to connect the left body and the support 40, but the number of shape memory springs 33 and the number of springs 34 are limited to two. You may connect using two or more springs, without using.

以上のように構成された流路切替装置１００を用いた本実施の形態の給湯装置について、以下その動作および作用を説明する。   The operation and action of the hot water supply apparatus of the present embodiment using the flow path switching apparatus 100 configured as described above will be described below.

本実施の形態の給湯装置は、湯水を貯える貯湯槽１と、加熱手段であるヒートポンプ熱源２を備えており、貯湯槽１の底部には、給水源からの水を供給する給水管３が接続されている。また、貯湯槽１の下部とヒートポンプ熱源２とは、沸き上げポンプ５を介してヒートポンプ往き配管６で接続されており、沸き上げポンプ５を駆動することで、ヒートポ
ンプ熱源２に貯湯槽１の底部にある低温水を送っている。 The hot water supply apparatus of the present embodiment includes a hot water storage tank 1 for storing hot water and a heat pump heat source 2 as heating means, and a water supply pipe 3 for supplying water from the water supply source is connected to the bottom of the hot water storage tank 1. Has been. Further, the lower part of the hot water tank 1 and the heat pump heat source 2 are connected by a heat pump outgoing pipe 6 via a boiling pump 5, and the bottom part of the hot water tank 1 is connected to the heat pump heat source 2 by driving the boiling pump 5. We are sending low-temperature water.

ヒートポンプ熱源２は、水と冷媒とが熱交換を行う水冷媒熱交換器、冷媒を減圧する減圧装置、冷媒が大気から熱を吸熱する蒸発器、冷媒を圧縮するコンプレッサー７を有し、順次冷媒配管で環状に接続されてヒートポンプ回路を形成している。そして冷媒水熱交換器で、コンプレッサー７で圧縮されて高温高圧となった冷媒と、貯湯槽１の底部から送られてくる低温水との間で熱交換を行い、高温水を生成する。   The heat pump heat source 2 includes a water-refrigerant heat exchanger that exchanges heat between water and refrigerant, a decompression device that decompresses the refrigerant, an evaporator that absorbs heat from the atmosphere, and a compressor 7 that compresses the refrigerant. A heat pump circuit is formed by being connected in an annular shape by piping. Then, the refrigerant water heat exchanger performs heat exchange between the refrigerant compressed by the compressor 7 and having a high temperature and high pressure and the low temperature water sent from the bottom of the hot water tank 1 to generate high temperature water.

一方、ヒートポンプ熱源２から貯湯槽１に戻ってくるヒートポンプ戻り配管８と、湯水を貯湯槽１の上部に戻すためのタンク上戻り配管１１とを接続している箇所に流路切替装置１００が設けられており、流路切替装置１００のヒートポンプ戻り口１８にヒートポンプ戻り配管８を接続し、タンク上戻り口２１にタンク上戻り配管１１が接続されている。さらに、流路切替装置１００のタンク下戻り口２０にタンク下戻り配管９を接続して、貯湯槽１の底部に温水を戻す構成となっている。   On the other hand, a flow path switching device 100 is provided at a location where a heat pump return pipe 8 returning from the heat pump heat source 2 to the hot water tank 1 and a tank return pipe 11 for returning hot water to the upper part of the hot water tank 1 are connected. The heat pump return pipe 8 is connected to the heat pump return port 18 of the flow path switching device 100, and the tank upper return pipe 11 is connected to the tank return port 21. Further, the tank lower return pipe 9 is connected to the tank lower return port 20 of the flow path switching device 100 so that the hot water is returned to the bottom of the hot water tank 1.

そして、本実施の形態の流路切替装置１００に取り付けている形状記憶バネ３３は、湯水の温度が６０度より低い場合には縮んでおり、湯水の温度が６０度を超えると伸びでバネ３４の荷重を超えるように構成されている。   The shape memory spring 33 attached to the flow path switching device 100 of the present embodiment is contracted when the temperature of the hot water is lower than 60 degrees, and when the temperature of the hot water exceeds 60 degrees, the spring 34 is expanded. It is configured to exceed the load.

図２には、ヒートポンプ熱源２の立ち上がり時などの流路切替装置１００の状態図を示し、図３には、ヒートポンプ熱源２が立ち上がって所定時間経過後の流路切替装置１００の状態図を示している。   FIG. 2 shows a state diagram of the flow path switching device 100 such as when the heat pump heat source 2 starts up. FIG. 3 shows a state diagram of the flow path switching device 100 after the heat pump heat source 2 has started up and a predetermined time has elapsed. ing.

図２に示すように、ヒートポンプ熱源２の立ち上がり時には、温水の温度が上がっていないため、ヒートポンプ戻り口１８から入り、パッキンＢ３２と右ボディ２７に空いている穴３５を通り、タンク下戻り口２０を出て貯湯槽１の下部に戻る。   As shown in FIG. 2, when the heat pump heat source 2 starts up, the temperature of the hot water has not risen, so it enters from the heat pump return port 18, passes through a hole 35 that is open in the packing B 32 and the right body 27, and returns to the tank lower return port 20. Exit and return to the bottom of the hot water tank 1.

この時、ヒートポンプ熱源２からの出湯された湯水の温度が６０℃より低いため、形状記憶バネ３３は縮まっており、作動軸３０にはほとんど力が加わっていないが、バネ３４が作動軸３０を左方向の力で常に押しているため、パッキンＡ３１が左ボディ２６の開口孔を塞ぐように押さえつけられ、水の流れを遮断している。   At this time, since the temperature of the hot water discharged from the heat pump heat source 2 is lower than 60 ° C., the shape memory spring 33 is contracted and almost no force is applied to the operating shaft 30, but the spring 34 moves the operating shaft 30. Since it is always pushed by the force in the left direction, the packing A31 is pressed so as to close the opening hole of the left body 26, and the flow of water is blocked.

したがって、ヒートポンプ熱源２から戻ってくる湯水は、タンク上戻り口２１側には出ず、パッキンＢ３２と右ボディ２７に空いている穴３５を通り、タンク下戻り口２０を出て貯湯槽１の下部に戻るようになっている。   Therefore, the hot water returning from the heat pump heat source 2 does not go out to the tank upper return port 21 side, passes through the hole 35 opened in the packing B 32 and the right body 27, exits the tank lower return port 20, and enters the hot water storage tank 1. It is designed to return to the bottom.

また、図３に示すように、ヒートポンプ熱源２が立ち上がってから所定時間経過後には、生成される温水が高温となっているため、ヒートポンプ戻り口１８から入り、パッキンＡ３１が左ボディ２６の開口孔を塞いでいた状態を脱し、湯水がタンク上戻り口２１に流れ込む状態となる。   Further, as shown in FIG. 3, after a predetermined time has elapsed since the heat pump heat source 2 started up, the generated hot water is at a high temperature, so the heat A enters from the heat pump return port 18, and the packing A31 is an opening hole of the left body 26 The state where the water is blocked is removed, and the hot water flows into the tank return port 21.

この時、ヒートポンプ熱源２からの出湯された湯水の温度は６０度よりも高いため、形状記憶バネ３３は伸びて、バネ３４の荷重を超えて、パッキンＢ３２を右ボディ２７の開口孔を塞ぐように押さえつける。   At this time, since the temperature of the hot water discharged from the heat pump heat source 2 is higher than 60 degrees, the shape memory spring 33 extends and exceeds the load of the spring 34 so as to close the packing B32 in the opening hole of the right body 27. Press down on.

したがって、タンク下戻り口２０は閉止され、反対側のパッキンＡ３１と左ボディ２６の開口孔が開くためヒートポンプ熱源２から戻ってきた湯はタンク上戻り口２１から貯湯槽１の上部に戻る。   Accordingly, the tank lower return port 20 is closed, and the opening of the opposite packing A31 and the left body 26 is opened, so that the hot water returned from the heat pump heat source 2 returns from the tank upper return port 21 to the upper part of the hot water storage tank 1.

以上のように、本発明の給湯装置は、温度センサーなどで湯水の温度を計測しながら、
流路を切り換える必要がないため、複雑な制御を必要とすることなく、ひいては流路を切り替えるための制御装置も不要となるためコストを削減することができ、その時の温度に応じて、流路が切り替わるため、流路切替のための電力を消費することなく、効率よく貯湯槽に高温水を貯えることができる。 As described above, the hot water supply apparatus of the present invention measures the temperature of hot water with a temperature sensor or the like,
Since there is no need to switch the flow path, the control device for switching the flow path is not required without requiring complicated control, so that the cost can be reduced and the flow path can be reduced according to the temperature at that time. Therefore, high-temperature water can be efficiently stored in the hot water storage tank without consuming electric power for channel switching.

また、本実施の形態では、形状記憶バネ３３と普通のバネ３４とを用いて流路切替装置１００を構成したが、図５、図６に示すように、形状記憶バネＡ３６と形状記憶バネＢ３７を用いて構成してもよい。図５には、ヒートポンプ熱源２の立ち上がり時などの流路切替装置１００の状態図を示し、図６には、ヒートポンプ熱源２が立ち上がって所定時間経過後の流路切替装置１００の状態図を示している。   In the present embodiment, the flow path switching device 100 is configured using the shape memory spring 33 and the ordinary spring 34. However, as shown in FIGS. 5 and 6, the shape memory spring A36 and the shape memory spring B37 are used. You may comprise using. FIG. 5 shows a state diagram of the flow path switching device 100 such as when the heat pump heat source 2 starts up. FIG. 6 shows a state diagram of the flow path switching device 100 after the heat pump heat source 2 has started up and a predetermined time has elapsed. ing.

図２および図３と異なる点は、形状記憶バネＡ３６および形状記憶バネＢ３７で作動軸３０を動作させる点である。ヒートポンプ熱源２から戻ってくる湯水の温度が６０℃より低い場合には、形状記憶バネＡ３６は縮まり、形状記憶バネＢ３７は伸びて、左ボディ２６の開口孔をパッキンＡ３１が塞ぎ、ヒートポンプ熱源２から戻ってきた湯はタンク下戻り口２０から貯湯槽１の下部に戻る。   2 and FIG. 3 is that the operating shaft 30 is operated by the shape memory spring A36 and the shape memory spring B37. When the temperature of the hot water returning from the heat pump heat source 2 is lower than 60 ° C., the shape memory spring A 36 is contracted and the shape memory spring B 37 is extended, and the packing A 31 closes the opening hole of the left body 26. The returned hot water returns from the tank lower return port 20 to the lower part of the hot water tank 1.

ヒートポンプ熱源２から戻ってくる湯水の温度が６０℃より高い場合には、形状記憶バネＡ３６は伸び、形状記憶バネＢ３７は縮まり、右ボディ２７の開口孔をパッキンＢ３２が塞ぎ、ヒートポンプ熱源２から戻ってきた湯はタンク上戻り口２１から貯湯槽１の上部に戻る。   When the temperature of the hot water returning from the heat pump heat source 2 is higher than 60 ° C., the shape memory spring A36 is extended, the shape memory spring B37 is contracted, the packing B32 closes the opening hole of the right body 27, and the heat pump heat source 2 returns. The hot water returned to the upper part of the hot water tank 1 from the tank return port 21.

片方を通常のバネを使用した実施例の場合には、形状記憶バネが伸びる場合、反対側のバネの力と閉止力をあわせた力のバネ圧に、形状記憶バネの力に設定する必要がある。しかしながら、どちらのバネにも形状記憶バネを使用した場合には、特性の異なる形状記憶バネをむかえ合わせで使用することにより、相対するバネの力を考慮に入れなくてもよくなり、一つのバネの荷重を小さくすることが可能となり、バネの全長も短くでき、三方弁を小さく設計することが可能となる。   In the case of an embodiment using a normal spring on one side, when the shape memory spring extends, it is necessary to set the force of the shape memory spring to the spring pressure of the force of the opposite spring and the closing force. is there. However, when shape memory springs are used for both springs, the use of shape memory springs with different characteristics makes it unnecessary to take the force of the opposing springs into account. It is possible to reduce the total load of the spring, shorten the overall length of the spring, and design the three-way valve to be small.

以上のように、本発明に係る給湯装置は、ヒートポンプサイクルと給湯サイクルが一体に構成された一体型ヒートポンプ式給湯機、別体に構成された分離型ヒートポンプ式給湯機、給湯用熱交換器で加熱したお湯をそのまま出湯できる直接出湯型ヒートポンプ式給湯機などの各種ヒートポンプ給湯機に適用できる。   As described above, the hot water supply apparatus according to the present invention includes an integrated heat pump type hot water heater in which a heat pump cycle and a hot water supply cycle are integrally configured, a separate heat pump type hot water heater configured separately, and a heat exchanger for hot water supply. The present invention can be applied to various heat pump water heaters such as a direct hot water heat pump type hot water heater that can discharge hot water as it is.

本発明の実施の形態における給湯装置の構成図The block diagram of the hot-water supply apparatus in embodiment of this invention 同実施の形態における流路切替装置の構成図The block diagram of the flow-path switching apparatus in the embodiment 同実施の形態における流路切替装置の構成図The block diagram of the flow-path switching apparatus in the embodiment 同実施の形態における作動軸の構成図Configuration diagram of operating shaft in the same embodiment 同実施の形態における流路切替装置の構成図The block diagram of the flow-path switching apparatus in the embodiment 同実施の形態における流路切替装置の構成図The block diagram of the flow-path switching apparatus in the embodiment 従来の実施の形態における給湯装置の構成図The block diagram of the hot-water supply apparatus in conventional embodiment 同実施の形態における三方弁の構成図Configuration diagram of three-way valve in the same embodiment 同実施の形態における三方弁の構成図Configuration diagram of three-way valve in the same embodiment

符号の説明Explanation of symbols

１ 貯湯槽
２ ヒートポンプ熱源
３ 給水管
４ 給湯混合弁
５ 沸き上げポンプ
６ ヒートポンプ往き管
７ コンプレッサー
８ ヒートポンプ戻り管
９ タンク下戻り配管
１０ 三方弁
１１ タンク上戻り配管
１２ 入水温度センサー
１３ 出湯温度センサー
１４ 制御基板
１５ 給湯温度センサー
１６ 流量センサー
１７ 蛇口
１８ ヒートポンプ戻り口
１９ ボールバルブ
２０ タンク下戻り口
２１ タンク上戻り口
２２ パッキン
２３ ステム
２４ モーター
２５ ギア
２６ 左ボディ
２７ 右ボディ
２８ Ｏリング
２９ 軸受け
３０ 作動軸
３１ パッキンＡ
３２ パッキンＢ
３３ 形状記憶バネ
３４ バネ
３５ 穴
３６ 形状記憶バネＡ
３７ 形状記憶バネＢ
４０ 支持具
１００ 流路切替装置 DESCRIPTION OF SYMBOLS 1 Hot water tank 2 Heat pump heat source 3 Water supply pipe 4 Hot water supply mixing valve 5 Boiling pump 6 Heat pump forward pipe 7 Compressor 8 Heat pump return pipe 9 Tank lower return pipe 10 Three-way valve 11 Tank upper return pipe 12 Incoming water temperature sensor 13 Hot water temperature sensor 14 Control Board 15 Hot water temperature sensor 16 Flow rate sensor 17 Faucet 18 Heat pump return port 19 Ball valve 20 Tank lower return port 21 Tank upper return port 22 Packing 23 Stem 24 Motor 25 Gear 26 Left body 27 Right body 28 O-ring 29 Bearing 30 Actuating shaft 31 Packing A
32 Packing B
33 Shape memory spring 34 Spring 35 Hole 36 Shape memory spring A
37 Shape Memory Spring B
40 support device 100 flow path switching device

Claims (2)

湯水を貯える貯湯槽と、前記貯湯槽内の湯水を加熱する加熱手段と、前記加熱手段により加熱された湯水を前記貯湯槽の上部または下部へ送る流路切換手段とを備え、前記流路切換手段として形状記憶バネと閉止弁を用いたことを特徴とする給湯装置。 A hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water tank, and a flow path switching means for sending the hot water heated by the heating means to the upper or lower part of the hot water tank. A hot water supply apparatus using a shape memory spring and a shut-off valve as means. 前記流路切換手段として温度特性が互いに異なる２種類の形状記憶バネを用いることを特徴とした請求項１に記載の給湯装置。 The hot water supply apparatus according to claim 1, wherein two kinds of shape memory springs having different temperature characteristics are used as the flow path switching means.
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