JP5046180B2 - Water heater with built-in water softener - Google Patents
Water heater with built-in water softener Download PDFInfo
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- JP5046180B2 JP5046180B2 JP2007046643A JP2007046643A JP5046180B2 JP 5046180 B2 JP5046180 B2 JP 5046180B2 JP 2007046643 A JP2007046643 A JP 2007046643A JP 2007046643 A JP2007046643 A JP 2007046643A JP 5046180 B2 JP5046180 B2 JP 5046180B2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 393
- 238000010411 cooking Methods 0.000 claims description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 37
- 239000003456 ion exchange resin Substances 0.000 description 37
- 229920003303 ion-exchange polymer Polymers 0.000 description 37
- 230000008929 regeneration Effects 0.000 description 29
- 238000011069 regeneration method Methods 0.000 description 29
- 238000000034 method Methods 0.000 description 28
- 239000008234 soft water Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000000344 soap Substances 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 241000404068 Cotula Species 0.000 description 1
- 206010012438 Dermatitis atopic Diseases 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 201000008937 atopic dermatitis Diseases 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 208000017520 skin disease Diseases 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Description
本発明は、給湯器内の給水ルート中に軟水化装置を一体的に組み込んでなる軟水化装置内蔵型給湯器に関する。 The present invention relates to a water heater with a built-in water softening device in which a water softening device is integrally incorporated in a water supply route in the water heater.
最近、一般家庭に供給される水道水に含まれるカルシウム成分やマグネシウム成分が、洗顔や入浴の際に使用する石けん、洗顔フォーム、ボディーソープ或いはシャンプー等と反応していわゆる「石けんカス」と称される金属石けんを形成し、これが皮膚に付着することにより皮膚のつっぱり感や乾燥を生じさせると共に、肌荒れやアトピー性皮膚炎などの皮膚疾患の原因となることが認識されてきており、そのため、カルシウム成分やマグネシウム成分などの硬度成分の含有量が比較的少ない「軟水(ソフトウォーター)」と称される水が非常に注目されてきており、既に、スキンケアなどの分野においては、皮膚刺激の少ない肌に優しい水として、その利用が実用化されている。 Recently, calcium and magnesium components contained in tap water supplied to ordinary households have been called so-called “soap scum” by reacting with soap, facial cleansing foam, body soap, shampoo, etc. used in face washing and bathing. It has been recognized that when it forms a metallic soap that adheres to the skin, it causes a feeling of dryness and dryness of the skin and causes skin diseases such as rough skin and atopic dermatitis. Water called “soft water”, which has a relatively small content of hardness components such as components and magnesium components, has attracted much attention, and has already been used in skin care and other fields where skin irritation is low. As water that is kind to the environment, its use has been put to practical use.
このような軟水は、蒸留、若しくはイオン交換樹脂などを用いて水中の硬度成分を除去することにより比較的簡単に製造することができるが、中でもランニングコストの面で有利なイオン交換樹脂を利用した軟水化装置(軟水器)による軟水の製造が、工業用及び家庭用のいずれにおいても主流となっており、現在、一般家庭においては、小型で簡単な構造の軟水器(例えば、下記特許文献1〜5参照。)が普及してきている。 Such soft water can be relatively easily produced by removing hardness components in water using distillation or ion exchange resin, etc. Among them, an ion exchange resin that is advantageous in terms of running cost is used. The production of soft water by a water softening device (water softener) has become the mainstream for both industrial and household use. Currently, in general households, a water softener with a small and simple structure (for example, Patent Document 1 below) -5) has become widespread.
そして、これらの軟水器は、通常、風呂場、洗面所、或いはキッチンなどにおけるシャワーや給湯蛇口などの、一般家庭における給水ルートの末端に対して、二次的(追加的)に接続されて使用されるのであるが、軟水器の設置場所の確保に困るといった場所的・空間的問題や、水周りに設置することから、軟水器の背面や側面或いは底面などの設置の隙間に、カビなどの雑菌が繁殖したりするといった衛生的な問題が指摘されている。 These water softeners are usually used in a secondary (additional) connection to the end of a water supply route in a general household, such as a shower or hot water faucet in a bathroom, washroom, or kitchen. However, it is difficult to secure the installation location of the water softener, and it is installed around the water. Hygienic problems such as the propagation of various germs have been pointed out.
又、最近の家庭用バスシステムにおいては、シャワーや給湯蛇口による給湯に加えて、直接浴槽にお湯を溜める自動給湯システムが一般的となっているが、この自動給湯システムにおける給水ルートに対して、二次的に軟水機を備えることは困難であり、そのため、シャワーや給湯蛇口に対しては、軟水器を設置して、軟水を使用していながら、自動給湯システムを用いて浴槽に溜めて使用するお湯については軟水ではなく、水道水をそのまま沸かしたものを使用するといった矛盾点も生じている。 Moreover, in the recent home bath system, in addition to hot water supply by a shower and a hot water supply faucet, an automatic hot water supply system in which hot water is directly stored in a bathtub has become common, but for the water supply route in this automatic hot water supply system, It is difficult to provide a water softener secondarily, so for showers and hot water faucets, a water softener is installed and soft water is used, but it is stored in a bathtub using an automatic hot water supply system. Concerning the hot water to be used, there is a contradiction in that tap water is used as it is rather than soft water.
もちろん、シャワーや給湯蛇口を経由して浴槽へお湯を溜める方法も考えられるが、予定時間に適量のお湯を溜めることができる便利な自動給湯システムが使用できないことは、ほぼ毎日入浴することが一般的となっている現在、使用者にとって非常に煩雑な問題であるといえる。 Of course, it is possible to store hot water in the bathtub via a shower or hot water faucet, but it is common to take a bath almost every day because a convenient automatic hot water system that can store an appropriate amount of hot water at the scheduled time cannot be used. This is a very complicated problem for users at present.
そのため、給湯器内に軟水化装置を一体的に組み込んでなる軟水化装置内蔵型給湯器についての研究・開発がされている(例えば、特許文献6〜8参照。)。 For this reason, research and development have been conducted on a water heater with a built-in water softening device in which a water softening device is integrally incorporated in the water heater (see, for example, Patent Documents 6 to 8).
ここで、上記特許文献6〜8に記載された軟水化装置内蔵型給湯器は、いずれも給湯器における熱交換器によって加熱される前の原水を軟水化装置において処理するもの、即ち、軟水化装置を給湯器内の給水ルート中に組み込むにあたり、当該軟水化装置を前記給湯器内に備えられた熱交換器に対して一次側(入口側以前)に配したものである。 Here, each of the water heaters with built-in water softening devices described in Patent Documents 6 to 8 processes raw water before being heated by a heat exchanger in the water heater in the water softening device, that is, water softening. In incorporating the apparatus into the water supply route in the water heater, the water softening device is arranged on the primary side (before the inlet side) with respect to the heat exchanger provided in the water heater.
しかしながら、このように軟水化装置を給湯器内に備えられた熱交換器に対して一次側に配する構成の軟水化装置内蔵型給湯器においては、イオン交換樹脂が大量に必要となることから軟水化装置が大型化し、必然的に給湯器自体も大型化するといった欠点があった。 However, in the water heater with a built-in water softening device configured to arrange the water softening device on the primary side with respect to the heat exchanger provided in the water heater, a large amount of ion exchange resin is required. There was a drawback that the water softening device was enlarged and the water heater itself was inevitably enlarged.
そこで、本発明者は、このような問題を解決すべく鋭意検討を重ねた結果、給湯器内の給水ルート中に、軟水化装置を一体的に組み込んでなる軟水化装置内蔵型給湯器であって、特に、前記軟水化装置を給水ルート中に組み込むにあたり、当該軟水化装置を前記給湯器内に備えられた熱交換器に対して二次側(出口側以降)に配したことを特徴とする本発明の軟水化装置内蔵型給湯器を完成するに至ったのである。 Therefore, as a result of intensive studies to solve such problems, the present inventor is a water heater with a built-in water softening device in which a water softening device is integrally incorporated in a water supply route in the water heater. In particular, when the water softening device is incorporated in the water supply route, the water softening device is arranged on the secondary side (after the outlet side) with respect to the heat exchanger provided in the water heater. Thus, the water softener built-in type water heater according to the present invention has been completed.
即ち、本発明者は、イオン交換樹脂による水中の硬度成分の除去能につき、低温の原水をそのまま処理するよりも、比較的高温に加熱された原水を処理する方が、約2〜5割程度も向上している点に着目し、軟水化装置を給湯器内の給水ルート中に組み込むにあたり、当該軟水化装置を前記給湯器内に備えられた熱交換器に対して二次側に配すれば、熱交換器によって加熱された原水を軟水化装置において処理することができ、これより、イオン交換樹脂の少量化による軟水化装置の小型化が可能となり、その結果、非常に小型且つコンパクトな構造の軟水化装置内蔵型給湯器を提供することができるとの知見を得たのである。 That is, the present inventor is about about 20 to 50% of the ability to remove raw water components by heating with a relatively high temperature rather than the raw raw water as it is with respect to the ability to remove hardness components in water by the ion exchange resin. In order to incorporate the water softening device into the water supply route in the water heater, the water softening device is arranged on the secondary side with respect to the heat exchanger provided in the water heater. For example, the raw water heated by the heat exchanger can be processed in the water softening device, which makes it possible to reduce the size of the water softening device by reducing the amount of ion exchange resin. They have obtained the knowledge that a water heater with a built-in water softening device can be provided.
本発明は、上記知見に基づき完成されたものであり、非常に小型且つコンパクトな構造であって、浴槽への自動給湯や追加の給湯と浴槽内の湯に追い焚きを行う軟水化装置内蔵型給湯器において、軟水化装置の雑菌繁殖を防止することができる軟水化装置内蔵型給湯器を提供することを目的とする。 The present invention has been completed on the basis of the above knowledge, and has a very small and compact structure , and has a built-in water softening device that recharges automatic hot water to a bathtub or additional hot water and hot water in the bathtub. An object of the present invention is to provide a water heater with a built-in water softening device that can prevent the propagation of germs in the water softening device .
以上の課題を解決する手段である本発明は、シャワーまたは給湯蛇口からの給湯を要する場合には、第一の給水ルートを経由した原水が、第一の熱交換器により加熱されて、シャワー又は給湯蛇口から給湯され、
浴槽への自動給湯や追加の給湯を要する場合には、第一の給水ルート、第一の給水ルートの第一の熱交換器の二次側とシャワー又は給湯蛇口との間から分岐される第二の給水ルートを順に経由した原水が、第二の給水ルートに接続され、浴槽の追い炊きシステムの循環路である第三の給水ルートに設けられる第二の熱交換器熱交換器及び/又は第一の熱交換器により加熱されて、浴槽へ給湯され、
浴槽内の湯に追い焚きの必要が生じた場合は、浴槽内の湯が、第三の給水ルートに設けられるポンプの作動により第三給水ルートを循環すると共に第二の熱交換器により再加熱され、再び浴槽に給湯され、
第一の給水ルートの第一の熱交換器の二次側又は第二の給水ルートに軟水化装置を備えたことを特徴とする。
以下、本発明の軟水化装置内蔵型給湯器について詳細に説明する。
In the present invention , which is a means for solving the above problems, when hot water supply from a shower or hot water supply faucet is required, the raw water passing through the first water supply route is heated by the first heat exchanger, and the shower or Hot water is supplied from the hot water tap,
When automatic hot water supply or additional hot water supply to the bathtub is required, the first water supply route, the second side of the first heat exchanger of the first water supply route, and the second branched from the shower or hot water tap The second heat exchanger heat exchanger provided in the third water supply route which is connected to the second water supply route and the third water supply route which is the circulation path of the bathtub additional cooking system is connected to the second water supply route, and / or Heated by the first heat exchanger, hot water is supplied to the bathtub,
When it is necessary to reheat the hot water in the bathtub, the hot water in the bathtub is circulated through the third water supply route by the operation of a pump provided in the third water supply route and reheated by the second heat exchanger. And hot water in the tub again
A water softening device is provided on the secondary side or the second water supply route of the first heat exchanger of the first water supply route .
Hereinafter, the water heater with built-in water softening device of the present invention will be described in detail.
本発明の「軟水化装置内蔵型給湯器」は、給湯器に対して軟水化装置を二次的(追加的)に備えるものではなく、給湯器内の給水ルート中に、軟水化装置を一体的に組み込んでなるものであり、主として一般家庭における風呂場や洗面所、キッチンなどに備え付けられるものである。 The “water heater with built-in water softening device” of the present invention does not include a water softening device as a secondary (additional) to the water heater, and the water softening device is integrated in the water supply route in the water heater. It is built in, and is mainly installed in a bathroom, washroom, kitchen, etc. in a general household.
前記「給湯器」の構造としては、上水道として供給される水道水や、ポンプなどでくみ上げられて供給される井戸水等の地下水を原水とし、これを給湯器内の給水ルート(配水管)内に導入して、その適宜箇所に備えられた熱交換器により加熱し、もって、給湯することができるものであれば、特に限定されるものではない。 As the structure of the “hot water heater”, ground water such as tap water supplied as water supply or well water pumped up by a pump or the like is used as raw water, and this is used in a water supply route (distribution pipe) in the water heater. It is not particularly limited as long as it can be introduced and heated by a heat exchanger provided at an appropriate place to supply hot water.
又、前記「軟水化装置」としては、原水をイオン交換樹脂に接触させることにより、当該原水中に溶存するカルシウム成分やマグネシウム成分などの硬度成分を除去する構成のものであれば、特に限定されるものではない。 The “water softening device” is not particularly limited as long as the raw water is brought into contact with an ion exchange resin to remove hardness components such as calcium components and magnesium components dissolved in the raw water. It is not something.
そして、本発明の軟水化装置内蔵型給湯器は、前記軟水化装置を給湯器内の給水ルート中に組み込むにあたり、当該軟水化装置を前記給湯器内に備えられた熱交換器に対して二次側に配した点に最も大きな特徴を有する。 Then, the water heater with built-in water softening device of the present invention incorporates the water softening device with respect to the heat exchanger provided in the water heater when the water softening device is incorporated into the water supply route in the water heater. It has the biggest feature in the point arranged on the next side.
即ち、イオン交換樹脂による水中の硬度成分の除去能は、一般的に15〜20℃前後の比較的低温で供給される原水をそのまま処理するよりも、30〜45℃程度に加熱された原水を処理する方が約2〜5割程度向上するのであり、従って、軟水化装置を給湯器内に備えられた熱交換器に対して二次側に配すれば、熱交換器によって適温に加熱された原水を軟水化装置において処理することができ、これより、イオン交換樹脂の少量化による軟水化装置の小型化が可能となり、その結果、非常に小型且つコンパクトな構造の軟水化装置内蔵型給湯器を構築することができるのである。 That is, the ability to remove hardness components in water by the ion exchange resin is generally higher than that of raw water supplied at a relatively low temperature of about 15 to 20 ° C. Therefore, if the water softening device is arranged on the secondary side of the heat exchanger provided in the water heater, it is heated to an appropriate temperature by the heat exchanger. The raw water can be treated in the water softening device, which makes it possible to reduce the size of the water softening device by reducing the amount of ion exchange resin, and as a result, the water heater built-in water softening device with a very small and compact structure. A vessel can be constructed.
ところで、軟水化装置におけるイオン交換樹脂は、原水と接触するたびに硬度成分を吸着(イオン交換)し、徐々にその処理能が低下することから、使用頻度に応じた一定の使用期間経過後は、イオン交換樹脂自体を交換するか、イオン交換樹脂の再生処理を行う必要が生じる。 By the way, the ion exchange resin in the water softening device adsorbs hardness components (ion exchange) every time it comes into contact with raw water, and its processing ability gradually decreases, so that after a certain period of use according to the usage frequency, Therefore, it is necessary to replace the ion exchange resin itself or to regenerate the ion exchange resin.
もっとも、イオン交換樹脂の再生処理は、食塩水などの電解質溶液との接触によって簡単に行うことができることから、通常は、イオン交換樹脂自体を交換するよりも、再生処理を行うことがほとんどであり、特に、最近の軟水化装置においては、この再生処理を自動で行うものが多い。 However, since the regeneration treatment of the ion exchange resin can be easily performed by contact with an electrolyte solution such as a saline solution, the regeneration treatment is usually performed rather than replacing the ion exchange resin itself. Particularly, in recent water softening devices, there are many that automatically perform this regeneration process.
ここで、一般家庭において使用される給湯器に対しては、使用の際に蛇口をひねったり、給湯ボタンなどを操作したりするだけで自動的にお湯が供給されることが当然の如く要求されており、このため、一般家庭において使用される給湯器においては、給水ルート内の水の流れを感知して給湯器が自動的に作動する構造のものがほとんどとなっている。 Here, it is natural that water heaters used in general households are automatically supplied with hot water only by twisting the faucet or operating a hot water button or the like. For this reason, most of the water heaters used in general households have a structure in which the water heater automatically operates by sensing the flow of water in the water supply route.
しかしながら、軟水化装置を給湯器内に備えられた熱交換器に対して二次側に配してなる本発明の軟水化装置内蔵型給湯器に対して、このような構造を付与すると、再生処理中における給水ルート内の水の流れを感知して給湯器が自動的に作動してしまうことから、再生処理中にガスや電気などの無駄なエネルギーを消費することになる。 However, if such a structure is given to the water heater with a built-in water softening device according to the present invention in which the water softening device is arranged on the secondary side with respect to the heat exchanger provided in the water heater, the regeneration is performed. Since the water heater automatically operates by sensing the flow of water in the water supply route during processing, useless energy such as gas and electricity is consumed during the regeneration processing.
そのため、本発明の軟水化装置内蔵型給湯器においては、軟水化装置におけるイオン交換樹脂の再生処理中には、給湯器が運転しない制御機構を備えることが好ましい。 Therefore, in the water heater with a built-in water softening device of the present invention, it is preferable to include a control mechanism that does not operate the water heater during the regeneration process of the ion exchange resin in the water softening device.
即ち、このような制御機構を備えることにより、軟水化装置におけるイオン交換樹脂の再生処理中には熱交換器による加熱が行われず、再生処理中に無駄なガスや電気の消費を防止することができるのである。 That is, by providing such a control mechanism, heating by the heat exchanger is not performed during the regeneration process of the ion exchange resin in the water softening device, and wasteful gas and electricity consumption can be prevented during the regeneration process. It can be done.
なお、この制御機構としては、特に限定されるものではなく、例えば、スイッチやレバーなどにより、使用者が手動で給湯器の運転を停止するものであっても良いのであるが、使用者が、再生処理中であることを確認し、給湯器の運転を自ら停止することは、非常に煩雑な作業であることから、本発明においては、イオン交換樹脂再生処理中に、給湯器の運転を自動的に停止する制御機構や、給湯器の運転が開始する流量以下の流量で、軟水化装置におけるイオン交換樹脂再生をおこなう制御機構を備えることが好ましい。 The control mechanism is not particularly limited. For example, the user may manually stop the operation of the water heater by using a switch or a lever. Confirming that the regeneration process is in progress and stopping the operation of the water heater by itself is a very complicated task. Therefore, in the present invention, the operation of the water heater is automatically performed during the ion exchange resin regeneration process. It is preferable to provide a control mechanism for regenerating the ion exchange resin in the water softening device at a flow rate equal to or lower than the flow rate at which the operation of the water heater starts.
更に詳しくは、前者の制御機構としては、軟水化装置においてイオン交換樹脂の再生処理を開始する際に、例えば、再生処理中である旨の信号を有線若しくは無線により伝達し、この信号を受けて給湯器の運転を自動的に停止するものなどを挙げることができ、一方、後者の制御機構としては、給湯器の運転を開始する設定流量以下の流量、即ち、給湯器が給水ルートの水の流れを感知しない程度の流量でイオン交換樹脂の再生処理を行うものなどを挙げることができる。 More specifically, as the former control mechanism, when starting the regeneration process of the ion exchange resin in the water softening device, for example, a signal indicating that the regeneration process is in progress is transmitted by wire or wirelessly, and this signal is received. Examples of the control mechanism for automatically stopping the operation of the water heater include a flow rate equal to or lower than a set flow rate at which the operation of the water heater is started, that is, the water heater is water in the water supply route. Examples include those that regenerate the ion exchange resin at a flow rate that does not sense the flow.
ところで、本発明の軟水化装置内蔵型給湯器においては、軟水化装置を給湯器内に備えられた熱交換器に対して二次側に配していることから、軟水化装置においてイオン交換樹脂の再生処理が開始されると、当該処理が終了するまで給湯できないといった問題が生じる。 By the way, in the water heater with a built-in water softening device of the present invention, since the water softening device is arranged on the secondary side with respect to the heat exchanger provided in the water heater, the ion exchange resin in the water softening device. When the regeneration process is started, there is a problem that hot water cannot be supplied until the process is completed.
もちろん、再生処理を一旦中断して、給湯を開始する方法も考えられるが、イオン交換樹脂と接触させていた電解質溶液の排出が完了するまではお湯が使えず、非常に不便な場合がある。 Of course, a method of temporarily interrupting the regeneration process and starting hot water supply is also conceivable, but hot water cannot be used until the discharge of the electrolyte solution that has been in contact with the ion exchange resin is completed, which may be very inconvenient.
そのため、本発明の軟水化装置内蔵型給湯器においては、給湯器における給水ルートに、軟水化装置を経由しないバイパス路を備えることが好ましく、このようにバイパス路を備えることにより、軟水化装置においてイオン交換樹脂の再生処理が開始された際にお湯の使用を要する場合にあっては、バイパス路を経由する給水ルートを選択すれば、早急にお湯を使用することが可能となるのである。 Therefore, in the water heater with a built-in water softening device of the present invention, it is preferable to provide a bypass route that does not pass through the water softening device in the water supply route in the water heater. If it is necessary to use hot water when the regeneration process of the ion exchange resin is started, hot water can be used as soon as possible by selecting a water supply route that passes through the bypass.
ここで、このバイパス路を経由する給水ルートの選択を手動で行うことは煩雑な作業であることから、本発明においては、特に、軟水化装置におけるイオン交換樹脂再生中に給湯を要する場合、自動的にバイパス路を経由する給水ルートを選択する自動バイパス機構を備えることが好ましい。 Here, since manually selecting the water supply route that passes through this bypass path is a cumbersome operation, in the present invention, particularly when hot water is required during regeneration of the ion exchange resin in the water softening device, automatic It is preferable to provide an automatic bypass mechanism that selects a water supply route via the bypass path.
更に詳しくは、この自動バイパス機構としては、軟水化装置においてイオン交換樹脂の再生処理を開始しているときに給湯を要する場合、例えば、その給湯要求の信号を有線若しくは無線により伝達し、この信号を受けた自動バイパス弁が作動して、バイパス路を経由する給水ルートを選択し、これにより軟水化装置を経由しない給湯を可能にするものなどを挙げることができる。 More specifically, as the automatic bypass mechanism, when hot water is required when the regeneration process of the ion exchange resin is started in the water softening device, for example, a signal for requesting hot water is transmitted by wire or wirelessly. In response, the automatic bypass valve is activated to select a water supply route that passes through the bypass path, thereby enabling hot water supply that does not pass through the water softening device.
なお、本発明の軟水化装置内蔵型給湯器のうち、上述のイオン交換樹脂再生処理中に、給湯器の運転を自動的に停止する制御機構を備えたものにあっては、再生処理中に給湯器の運転が停止しているため、前記バイパス路を備えても、お湯を使うことができない。 Of the water heaters with built-in water softening devices of the present invention, those equipped with a control mechanism that automatically stops the operation of the water heater during the above-described ion exchange resin regeneration process, Since the operation of the water heater is stopped, hot water cannot be used even if the bypass path is provided.
そこで、本発明の軟水化装置内蔵型給湯器のうち、イオン交換樹脂再生処理中に、給湯器の運転を自動的に停止する制御機構を備えたものについては、再生処理中に給湯要求の受けた場合には、例外的に給湯器の運転を再開する制御機構を付与することが好ましい。 Therefore, among the water heaters with a built-in water softening device of the present invention, those having a control mechanism that automatically stops the operation of the water heater during the ion exchange resin regeneration process, receive a hot water request during the regeneration process. In such a case, it is preferable to provide a control mechanism that exceptionally restarts the operation of the water heater.
本発明によれば、浴槽への自動給湯や追加の給湯と浴槽内の湯に追い焚きを行う軟水化装置内蔵型給湯器において、軟水化装置の雑菌繁殖を防止することができる。 ADVANTAGE OF THE INVENTION According to this invention , in the water heater with a built-in water softening device which replenishes automatic hot water supply to a bathtub, additional hot water supply, and hot water in a bathtub, miscellaneous bacteria propagation of a water softening device can be prevented .
即ち、本発明の軟水化装置内蔵型給湯器は、軟水化装置を給湯器内の給水ルート中に組み込むにあたり、当該軟水化装置を前記給湯器内に備えられた熱交換器に対して二次側に配しているから、熱交換器によって加熱された原水を軟水化装置において処理することができ、これより、イオン交換樹脂の少量化による軟水化装置の小型化が可能となり、その結果、非常に小型且つコンパクトな構造の軟水化装置内蔵型給湯器を構築することができるのである。 That is, when the water softener built-in type water heater of the present invention is incorporated into the water supply route in the water heater, the water softener is secondary to the heat exchanger provided in the water heater. Since the raw water heated by the heat exchanger can be processed in the water softening device, the water softening device can be miniaturized by reducing the amount of ion exchange resin. A water heater with a built-in water softening device having a very small and compact structure can be constructed.
又、本発明の軟水化装置内蔵型給湯器において、軟水化装置におけるイオン交換樹脂再生処理中に給湯器が運転しない制御機構を備えてなるものは、軟水化装置におけるイオン交換樹脂の再生処理中に給湯器の運転が停止するため、再生処理中にガスや電気などの無駄なエネルギーの消費を防止することができるのである。 Further, in the water heater with a built-in water softening device of the present invention, the one having a control mechanism that does not operate the water heater during the ion exchange resin regeneration process in the water softener is in the process of regenerating the ion exchange resin in the water softener. In addition, since the operation of the water heater is stopped, it is possible to prevent the consumption of useless energy such as gas and electricity during the regeneration process.
更に、本発明の軟水化装置内蔵型給湯器において、給湯器における給水ルートに軟水化装置を経由しないバイパス路が備えられてなるものは、軟水化装置においてイオン交換樹脂の再生処理中であっても、早急にお湯を使用することが可能となるのである。 Furthermore, in the water heater with a built-in water softening device of the present invention, the water supply route in the water heater is provided with a bypass route that does not pass through the water softening device. However, it is possible to use hot water as soon as possible.
以下、本発明の軟水化装置内蔵型給湯器を実施するための最良の形態を実施例を挙げて説明するが、本発明はこの実施例に限定されるものではない。 Hereinafter, the best mode for carrying out the water heater with a built-in water softening device of the present invention will be described with reference to examples, but the present invention is not limited to these examples.
<給湯器>
図1(a)は、最近の一般家庭において使用されている自動給湯・追い焚きシステムを具備した風呂場用の給湯器1´を示す模式図である。
<Water heater>
Fig.1 (a) is a schematic diagram which shows the hot water heater 1 'for bathrooms equipped with the automatic hot water supply and reheating system currently used in the general household.
即ち、この給湯器1´は、原水Wを給湯器1´内に導入し、該給湯器1´内の給水ルート2(2a、2b、2c)を通過する原水Wを熱交換器3(3a、3b)によって適宜加熱し、シャワー11、給湯蛇口12及び浴槽13へ選択的に給湯するものである(なお、図中15は給水蛇口であり、原水Wを加熱せず、そのまま給水するものである。)。 That is, the water heater 1 'introduces the raw water W into the water heater 1' and converts the raw water W passing through the water supply route 2 (2a, 2b, 2c) in the water heater 1 'to the heat exchanger 3 (3a 3b), which is appropriately heated to selectively supply hot water to the shower 11, hot water supply faucet 12 and bathtub 13 (in the figure, 15 is a water supply faucet, which does not heat the raw water W and supplies water as it is. is there.).
更に詳しくは、シャワー11や給湯蛇口12からの給湯を要する場合には、図1(b)に示すように、(風呂注湯弁14が閉栓された上で)給水ルート2aを経由した原水Wが、熱交換器3aにより加熱されてお湯となり、シャワー11や給湯蛇口12から給湯されるのである。 More specifically, when hot water supply from the shower 11 or the hot water supply tap 12 is required, as shown in FIG. 1 (b), the raw water W via the water supply route 2a (with the bath pouring valve 14 closed) is shown. However, it is heated by the heat exchanger 3 a to become hot water, and hot water is supplied from the shower 11 and the hot water supply faucet 12.
一方、浴槽13への自動給湯や追加の給湯を要する場合には、図1(c)に示すように、(風呂注湯弁14が開栓された上で)給水ルート2a、2b及び2cを順に経由した原水が、熱交換器3a及び/又は3bにより加熱されてお湯となり、浴槽13へ給湯されるのである。 On the other hand, when automatic hot water supply or additional hot water supply to the bathtub 13 is required, as shown in FIG. The raw water passed in sequence is heated by the heat exchangers 3 a and / or 3 b to become hot water and supplied to the bathtub 13.
又、浴槽13内のお湯に追い焚きの必要が生じた場合は、図1(d)に示すように、(温度センサー(図示せず)の感知による自動、又は使用者の手動による指示を受けて)浴槽13内のお湯が、ポンプ16の作動により給水ルート2cを循環すると共に熱交換器3bにより再加熱され、再び適温のお湯として浴槽13に給湯されるのである。 In addition, when the hot water in the bathtub 13 needs to be reheated, as shown in FIG. 1 (d), an automatic detection by a temperature sensor (not shown) or a user's manual instruction is received. The hot water in the bathtub 13 circulates through the water supply route 2c by the operation of the pump 16 and is reheated by the heat exchanger 3b, and is again supplied to the bathtub 13 as hot water of appropriate temperature.
図2(a)〜(b)は、給水ルート2中に、軟水化装置4を一体的に組み込んでなる本発明の軟水化装置内蔵型給湯器1を示す模式図であり、これらの軟水化装置内蔵型給湯器1は、いずれも軟水化装置4を給水ルート2中に組み込むにあたり、当該軟水化装置4を給湯器1内に備えられた熱交換器3に対して二次側に配したものである。なお、図2(c)は、本発明の対比例である。 FIGS. 2A to 2B are schematic views showing a water heater 1 with a built-in water softening device of the present invention in which a water softening device 4 is integrally incorporated in a water supply route 2. In the case of incorporating the water softening device 4 into the water supply route 2, the apparatus built-in water heater 1 is arranged on the secondary side with respect to the heat exchanger 3 provided in the water heater 1. Is. FIG. 2 (c) is a comparison of the present invention.
即ち、図2(a)〜(b)に示す本発明の軟水化装置内蔵型給湯器1は、いずれも軟水化装置4を給湯器1内に備えられた熱交換器3に対して二次側に配しているから、熱交換器3によって適温に加熱された原水を軟水化装置4において処理することができ、これより、イオン交換樹脂の少量化による軟水化装置4の小型化が可能となり、その結果、非常に小型且つコンパクトな構造の軟水化装置内蔵型給湯器1になり得るのである。 That is, the water softener-equipped water heater 1 of the present invention shown in FIGS. 2A to 2B is secondary to the heat exchanger 3 provided with the water softener 4 in the water heater 1. Since the raw water heated to an appropriate temperature by the heat exchanger 3 can be processed in the water softening device 4, the water softening device 4 can be downsized by reducing the amount of ion exchange resin. As a result, the water heater 1 with a very small and compact structure can be obtained.
又、図2(a)〜(b)に示す本発明の軟水化装置内蔵型給湯器1には、いずれもイオン交換樹脂再生処理中の信号を受けて、給湯器1の運転(熱交換器3による加熱)を自動的に停止する制御機構5が備えられており、このような制御機構5を備えることにより、軟水化装置4におけるイオン交換樹脂の再生処理中に給湯器1の運転が停止し、再生処理中にガスや電気などの無駄なエネルギーの消費を防止することができるのである。 Also, each of the water heaters 1 with built-in water softening devices of the present invention shown in FIGS. 2 (a) to 2 ( b) receives a signal during the ion exchange resin regeneration process, and operates the water heater 1 (heat exchanger). 3 is provided, and the operation of the water heater 1 is stopped during the ion exchange resin regeneration process in the water softening device 4 by providing such a control mechanism 5. In addition, useless energy such as gas and electricity can be prevented during the regeneration process.
更に詳しく個々を説明すると、図2(a)に示す本発明の軟水化装置内蔵型給湯器1は、軟水化装置4を給湯器1内に備えられた熱交換器3aに対して二次側に配するにあたり、当該軟水化装置7を給水ルート2a上に配したものであり、シャワー11方向、給湯蛇口12方向、及び浴槽13方向のいずれに対しても軟水を供給することができる利点がある。 More specifically, the water heater 1 with a built-in water softening device of the present invention shown in FIG. 2A is provided on the secondary side with respect to the heat exchanger 3 a provided with the water softening device 4 in the water heater 1. The water softening device 7 is arranged on the water supply route 2a, and has the advantage that soft water can be supplied to any of the shower 11 direction, the hot water faucet 12 direction, and the bathtub 13 direction. is there.
又、図2(b)に示す本発明の軟水化装置内蔵型給湯器1は、軟水化装置4を給湯器1内に備えられた熱交換器3aに対して二次側に配するにあたり、当該軟水化装置4を給水ルート2b上に配したものであり、浴槽13方向のみしか軟水を供給することはできないが、軟水化装置4への負担が小さくなるため、要するイオン交換樹脂の量が少なくなり、より一層軟水化装置4を小型化することが可能となる利点がある。 In addition, the water softening device built-in type water heater 1 of the present invention shown in FIG. 2B is arranged on the secondary side with respect to the heat exchanger 3 a provided in the water heater 1. The water softening device 4 is arranged on the water supply route 2b and can supply soft water only in the direction of the bathtub 13. However, since the burden on the water softening device 4 is reduced, the amount of ion exchange resin required is small. There is an advantage that the water softening device 4 can be further reduced in size.
更に、図2(c)に示す対比例の軟水化装置内蔵型給湯器1は、軟水化装置4を給湯器1内に備えられた熱交換器3bに対して二次側に配するにあたり、当該軟水化装置4を給水ルート2c上に配したものであり、図2(b)のものと同様、浴槽13方向のみしか軟水を供給することはできないが、軟水化装置4への負担が小さくなるため、要するイオン交換樹脂の量が少なくなり、より一層軟水化装置4を小型化することが可能となる利点があるが、該給水ルート2cは追い焚きシステムの循環経路でもあるため、浴槽13内で使用された後のお湯が軟水化装置4に入り込むことから、軟水化装置4内のイオン交換樹脂に雑菌が繁殖する場合がある。 Furthermore, and FIG. 2 (c) are shown versus proportional water softener built-water heater 1, upon distribution to the secondary side of the heat exchanger 3b which is provided with a water softener 4 in the water heater 1, The water softening device 4 is arranged on the water supply route 2c, and as in FIG. 2B, soft water can be supplied only in the direction of the bathtub 13, but the burden on the water softening device 4 is small. Therefore, there is an advantage that the amount of ion exchange resin required is reduced and the water softening device 4 can be further reduced in size. However, since the water supply route 2c is also a circulation route of the reheating system, the bathtub 13 Since hot water after being used inside the water softening device 4 enters, bacteria may propagate on the ion exchange resin in the water softening device 4.
図3(a)は、給水ルート2中に、軟水化装置4(樹脂筒41、塩水タンク42、コントロールバルブ43)を一体的に組み込んでなる本発明の軟水化装置内蔵型給湯器1を示す模式図であり、この軟水化装置内蔵型給湯器1は、特に、軟水化装置4を給水ルート2中に組み込むにあたり、当該軟水化装置4を給湯器1内に備えられた熱交換器3に対して二次側に配したものである。 FIG. 3A shows a water heater 1 with a built-in water softening device of the present invention in which a water softening device 4 (resin tube 41, salt water tank 42, control valve 43) is integrally incorporated in a water supply route 2. FIG. This water heater 1 with a built-in water softening device is a heat exchanger 3 provided in the water heater 1 especially when the water softening device 4 is incorporated into the water supply route 2. On the other hand, it is arranged on the secondary side.
なお、本図においては、給水ルート2に対する軟水化装置4の接続関係が理解し易いように、給水ルート2と軟水化装置4との接続部分を拡大して示している。 In addition, in this figure, the connection part of the water supply route 2 and the water softening device 4 is expanded and shown so that the connection relationship of the water softening device 4 with respect to the water supply route 2 can be understood easily.
更に詳しくは、図3(a)に示す軟水化装置内蔵型給湯器1は、軟水化装置4を給湯器1内に備えられた熱交換器3aに対して二次側に配するにあたり、軟水化装置7を給水ルート2b上に配すると共に、該給水ルート2bに、軟水化装置4を経由しないバイパス路6及び自動バイパス弁7(7a、7b、7c)を備えたものである。 More specifically, in the water heater 1 with a built-in water softening device shown in FIG. 3A, when the water softening device 4 is arranged on the secondary side with respect to the heat exchanger 3a provided in the water heater 1, The water purification device 7 is arranged on the water supply route 2b, and the water supply route 2b is provided with a bypass passage 6 and automatic bypass valves 7 (7a, 7b, 7c) that do not pass through the water softening device 4.
即ち、本実施例に係る軟水化装置内蔵型給湯器1は、軟水化装置4においてイオン交換樹脂の再生処理を開始しているときに給湯を要する場合、その給湯要求の信号を受けて、自動的にバイパス路6を経由する給水ルートを選択する自動バイパス機構を備えたものであり、再生処理中(バイパス弁7b、7cを閉栓すると共にバイパス弁7aを開栓し、原水を軟水化装置4のみへ供給する。)に自動お湯張りシステムなどによるお湯の使用が要求された場合、図3(b)に示すように、自動バイパス弁7の作動(バイパス弁7cを閉栓すると共にバイパス弁7a、7bを開栓する。)によりバイパス路6を経由する給水ルート2が選択され、早急にお湯を使用することが可能となるのである。 That is, the water heater 1 with a built-in water softening device according to the present embodiment automatically receives a hot water request signal when hot water is required when the water softening device 4 starts the regeneration process of the ion exchange resin. In addition, an automatic bypass mechanism for selecting a water supply route via the bypass passage 6 is provided, and during the regeneration process (bypass valves 7b and 7c are closed and the bypass valve 7a is opened, the raw water is softened by the water softening device 4). When the use of hot water by an automatic hot water filling system or the like is required, the automatic bypass valve 7 is activated (bypass valve 7c is closed and bypass valve 7a, as shown in FIG. 3B). 7b is opened), the water supply route 2 passing through the bypass 6 is selected, and hot water can be used immediately.
なお、本実施例における軟水化装置内蔵型給湯器1には、イオン交換樹脂再生処理中の信号を受けて、給湯器1の運転を自動的に停止すると共に、再生処理中に給湯要求の信号を受けた場合には、例外的に給湯器の運転を再開する制御機構5を付与している。 In addition, the water heater 1 with a built-in water softening device according to the present embodiment receives a signal during the ion exchange resin regeneration process, automatically stops the operation of the water heater 1, and also requests a hot water supply request during the regeneration process. In the case of having received, the control mechanism 5 which exceptionally restarts the operation of the water heater is provided.
1 軟水化装置内蔵型給湯器
2 給水ルート
3 熱交換器
4 軟水化装置
5 制御機構
6 バイパス路
7 自動バイパス弁
DESCRIPTION OF SYMBOLS 1 Water softener built-in water heater 2 Water supply route 3 Heat exchanger 4 Water softener 5 Control mechanism 6 Bypass path 7 Automatic bypass valve
Claims (1)
浴槽(13)への自動給湯や追加の給湯を要する場合には、第一の給水ルート(2a)、第一の給水ルート(2a)の第一の熱交換器(3a)の二次側とシャワー(11)又は給湯蛇口(12)との間から分岐される第二の給水ルート(2b)を順に経由した原水が、第二の給水ルート(2b)に接続され、浴槽(13)の追い炊きシステムの循環路である第三の給水ルート(2c)に設けられる第二の熱交換器熱交換器(3b)及び/又は第一の熱交換器(3a)により加熱されて、浴槽(13)へ給湯され、
浴槽(13)内の湯に追い焚きの必要が生じた場合は、浴槽(13)内の湯が、第三の給水ルート(2c)に設けられるポンプ(16)の作動により第三給水ルート(2c)を循環すると共に第二の熱交換器(3b)により再加熱され、再び浴槽(13)に給湯され、
第一の給水ルート(2a)の第一の熱交換器(3a)の二次側又は第二の給水ルート(2b)に軟水化装置(4)を備えたことを特徴とする軟水化装置内蔵型給湯器。 When hot water supply from the shower (11) or the hot water supply faucet (12) is required, the raw water (W) via the first water supply route (2a) is heated by the first heat exchanger (3a), Hot water is supplied from the shower (11) or hot water tap (12),
When automatic hot water supply or additional hot water supply to the bathtub (13) is required, the secondary side of the first heat exchanger (3a) of the first water supply route (2a) and the first water supply route (2a) The raw water that has passed through the second water supply route (2b), which is branched from between the shower (11) or the hot water supply faucet (12), is connected to the second water supply route (2b) in order to follow the bathtub (13). Heated by the second heat exchanger (3b) and / or the first heat exchanger (3a) provided in the third water supply route (2c) which is the circulation path of the cooking system, )
When it is necessary to reheat the hot water in the bathtub (13), the hot water in the bathtub (13) is moved to the third water supply route (by the operation of the pump (16) provided in the third water supply route (2c) ( 2c) and reheated by the second heat exchanger (3b), again hot water is supplied to the bathtub (13),
Built-in water softening device characterized by comprising a water softening device (4) on the secondary side of the first heat exchanger (3a) of the first water supply route (2a) or the second water supply route (2b) Type water heater .
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JP2009056403A (en) * | 2007-08-31 | 2009-03-19 | Noritz Corp | Water softening unit and hot water supply system |
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US8721875B2 (en) | 2010-10-22 | 2014-05-13 | Rinnai Corporation | Hot-water supply system |
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JP3446940B2 (en) * | 1998-03-16 | 2003-09-16 | 三浦工業株式会社 | Water softener |
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JP2000274818A (en) * | 1999-03-25 | 2000-10-06 | Tokyo Gas Co Ltd | Hot water supply apparatus for water purifying function |
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