JPH06272965A - High efficiency hot-water apparatus - Google Patents
High efficiency hot-water apparatusInfo
- Publication number
- JPH06272965A JPH06272965A JP8923093A JP8923093A JPH06272965A JP H06272965 A JPH06272965 A JP H06272965A JP 8923093 A JP8923093 A JP 8923093A JP 8923093 A JP8923093 A JP 8923093A JP H06272965 A JPH06272965 A JP H06272965A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- ejector
- water supply
- bathtub
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 19
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Bathtub Accessories (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Details Of Fluid Heaters (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱交換器を二段にして
排熱を回収するようにした高効率の給湯装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-efficiency hot water supply system in which heat exchangers are arranged in two stages to recover waste heat.
【０００２】[0002]
【従来の技術】図２は従来のこの種の高効率給湯装置を
示したもので、ガスバーナ１で加熱される給湯用熱交換
器を上下二段２ａ，２ｂに分け、その中間部に上段の熱
交換器２ａで発生する凝縮水を受ける受け皿３を設ける
と共に、この受け皿３に連結された排水管７に中和器１
１を介装したものである。これは、通常２００℃で廃棄
される排ガスを上段に付加された熱交換器２ａに通し
て、排ガス温度が１００℃以下になるまで排熱を回収す
るものであり、その時発生する凝縮水は、排ガス中のＮ
ＯｘやＳＯｘなどが溶け込んで強酸性となっているため
に、これが下段の熱交換器２ｂやガスバーナ１を腐食し
ないように、受け皿３で受けて、凝縮水中和器５で中和
処理したのち、下水へ排水している。2. Description of the Related Art FIG. 2 shows a conventional high-efficiency hot water supply apparatus of this type. A hot water heat exchanger to be heated by a gas burner 1 is divided into upper and lower two stages 2a and 2b, and an upper stage in the middle. A tray 3 for receiving condensed water generated in the heat exchanger 2a is provided, and a drain pipe 7 connected to the tray 3 is connected to the neutralizer 1.
1 is interposed. This is to pass exhaust gas that is normally discarded at 200 ° C through the heat exchanger 2a added to the upper stage to recover exhaust heat until the exhaust gas temperature becomes 100 ° C or less, and the condensed water generated at that time is N in exhaust gas
Since Ox, SOx, etc. are dissolved and become strongly acidic, they are received by the tray 3 and neutralized by the condensed water neutralizer 5 so as not to corrode the heat exchanger 2b and the gas burner 1 in the lower stage. Drains into sewage.
【０００３】[0003]
【発明が解決しようとする課題】しかし上述の従来構成
は、凝縮水中和器１１が大形で設置場所をとる上に、処
理量が多いために中和器１１を構成しているマグネシウ
ム棒の間隙が酸化物によって目詰まりを起こし易く、消
耗が激しいという問題があった。本発明は上記の問題点
を解消し、中和器を小型化あるいは省略することができ
る高効率給湯装置を提供することを目的とするものであ
る。However, in the above-mentioned conventional configuration, the condensed water neutralizer 11 is large in size and requires a large installation space, and since the throughput is large, the magnesium rod forming the neutralizer 11 is large. There is a problem in that the gap is likely to be clogged with an oxide and is consumed a lot. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a high-efficiency hot water supply device which can downsize or omit the neutralizer.
【０００４】[0004]
【課題を解決するための手段】本発明による高効率給湯
装置は、図１に示すように、ガスバーナ１で加熱される
給湯用熱交換器を上下二段２ａ，２ｂに分け、その中間
部に上段の熱交換器２ａで発生する凝縮水を受ける受け
皿３を設けると共に、給湯配管４から分岐した浴槽給湯
配管５にエゼクター６を介装し、このエゼクター６の注
入口に上記受け皿３からの排水管７を接続して、浴槽８
へ供給される温水に凝縮水を混入せしめたものであり、
また請求項２の発明は、上記排水管７に介装した貯水タ
ンク９のオーバーフロー管１０を中和器１１に接続し
て、余剰の凝縮水を中和処理したのち外部へ排出せしめ
たものであり、更に請求項３の発明は、上記エゼクター
６の下流側の浴槽給湯配管５からシャワー用給湯配管１
２を分岐したものである。As shown in FIG. 1, a high-efficiency hot water supply apparatus according to the present invention divides a hot water supply heat exchanger heated by a gas burner 1 into upper and lower two stages 2a and 2b, and an intermediate portion thereof. A saucer 3 for receiving condensed water generated in the upper heat exchanger 2a is provided, and an ejector 6 is provided in a bathtub hot water supply pipe 5 branched from a hot water supply pipe 4, and the drainage from the saucer 3 is introduced into an inlet of the ejector 6. Connect the pipe 7 to the bath 8
Condensed water is mixed with the warm water supplied to
According to the second aspect of the present invention, the overflow pipe 10 of the water storage tank 9 provided in the drain pipe 7 is connected to the neutralizer 11 to neutralize excess condensed water and then discharge the condensed water to the outside. According to the invention of claim 3, the bathtub hot water supply pipe 5 on the downstream side of the ejector 6 to the shower hot water supply pipe 1 is provided.
It is a branch of 2.
【０００５】[0005]
【作用】請求項１の構成によれば、浴槽給湯時には凝縮
水をエゼクター６により吸引して浴槽８の湯に混入させ
ることができるので、凝縮水中和器１１の能力を節減し
て小型化できる。この場合、凝縮水はＰＨ値＝３の強酸
であるが、例えば１回の「お湯はり」で発生する凝縮水
の量は数１０ミリリットル程度であり、一方浴槽には通
常１５０リットル程度の水が使用され、また一般家庭に
おいて入浴に使用される水量は全使用量の約半分である
から、凝縮水は１０００〜２０００倍程度に希釈される
こととなってＰＨ値＝６以上となり、飲用としても問題
にはならない。また給湯栓１３のみを使用している間
は、凝縮水を貯湯タンク９に溜めておいて、浴槽使用時
にこれを消化するようにすれば、更に中和器１１を小型
化できる。更にシャワー用給湯配管１２を凝縮水吸引用
エゼクター６の下流側から分岐させて、シャワーを多用
する夏期においても凝縮水を浴槽給湯配管５で希釈処理
できるようにすれば、上記貯水タンク９の使用と相まっ
て、中和器１１を省略することも可能となる。According to the structure of claim 1, since condensed water can be sucked by the ejector 6 and mixed into the hot water of the bath 8 when the hot water is supplied to the bathtub, the capacity of the condensed water neutralizer 11 can be reduced and downsized. . In this case, the condensed water is a strong acid having a PH value of 3, but the amount of condensed water generated in one "hot water beam" is about several tens of milliliters, while about 150 liters of water is usually stored in the bathtub. Since the amount of water used for bathing in ordinary households is about half of the total amount used, the condensed water is diluted about 1000 to 2000 times, resulting in a PH value of 6 or more and also for drinking. It doesn't matter. Further, if the condensed water is stored in the hot water storage tank 9 while only the hot water tap 13 is used and the condensed water is digested when the bathtub is used, the neutralizer 11 can be further downsized. Further, if the hot water supply pipe for shower 12 is branched from the downstream side of the ejector 6 for sucking condensed water so that the condensed water can be diluted by the hot water supply pipe for bathtub 5 even in the summer when the shower is frequently used, the use of the water storage tank 9 can be improved. Coupled with this, the neutralizer 11 can be omitted.
【０００６】[0006]
【実施例】図１は本発明の一実施例を示したもので、ガ
スバーナ１で加熱される給湯用熱交換器は上下二段２
ａ，２ｂに分けられており、下段で温水を８０〜９０℃
まで加熱して２００℃前後まで温度低下した排ガスは、
上段で水道水を予熱して、例えば７０〜９０℃まで温度
低下し、その際に排ガス中に含まれていた水蒸気が凝縮
して、上下の熱交換器２ａ，２ｂの中間に設けられてい
る受け皿３に流下し、一旦貯水タンク９に溜められたの
ち、排水管７によってエゼクター６の注入口へ送られ
る。一方熱交換器２ａ，２ｂを経た給湯配管４から、浴
槽給湯配管５が分岐されており、浴槽給湯配管５には逆
止弁１４を介して凝縮水吸引用エゼクター６が介装さ
れ、このエゼクター６の注入口に受け皿３からの排水管
７が接続されている。エゼクターは、断面積を小さくし
て流速を大きくした隘路に、側方から注入路を開口させ
たものであり、この場合は水道圧によって浴槽８へ供給
される温水に凝縮水を吸引させるようにしたものであ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention in which a hot water heat exchanger heated by a gas burner 1 has two upper and lower stages 2.
It is divided into a and 2b, and warm water at 80-90 ℃ in the lower stage.
Exhaust gas that has been heated up to about 200 ° C
The tap water is preheated in the upper stage, and the temperature is lowered to, for example, 70 to 90 ° C., the water vapor contained in the exhaust gas is condensed at that time, and it is provided between the upper and lower heat exchangers 2a and 2b. After flowing down to the tray 3, the water is once stored in the water storage tank 9, and then sent to the inlet of the ejector 6 by the drainage pipe 7. On the other hand, a bathtub hot water supply pipe 5 is branched from a hot water supply pipe 4 passing through the heat exchangers 2a and 2b, and a condensed water suction ejector 6 is interposed in the bathtub hot water supply pipe 5 via a check valve 14. The drainage pipe 7 from the tray 3 is connected to the inlet of 6. The ejector is a bottleneck having a small cross-sectional area and a large flow velocity with an injection passage opened from the side. In this case, hot water supplied to the bathtub 8 by the tap pressure sucks condensed water. It was done.
【０００７】貯水タンク９には、上部にオーバーフロー
管１０が接続されており、浴槽８が使用されずに給湯栓
１３のみが使用されている間は、貯水タンク９に凝縮水
が溜るので、余った凝縮水をオーバーフローさせ、中和
器１１に送って中和処理したのち外部へ排出する。また
エゼクター６の下流側の浴槽給湯配管５からシャワー用
給湯配管１２が分岐されており、夏期などに浴槽を使用
せずシャワーを多用する家庭でも、冬期と同様に浴槽給
湯配管５で凝縮水が処理されるようになっており、従っ
てこの場合には、ユーザの選択によって中和器１１を省
略することも可能である。An overflow pipe 10 is connected to an upper part of the water storage tank 9, and condensed water is accumulated in the water storage tank 9 while the bathtub 8 is not used and only the hot water tap 13 is used. The condensed water is overflowed, sent to the neutralizer 11 for neutralization, and then discharged to the outside. In addition, the hot water supply pipe 12 for the shower is branched from the hot water supply pipe 5 on the downstream side of the ejector 6, so that even in the home where the shower is frequently used without using the bathtub in the summer and the like, condensed water is collected in the hot water supply pipe 5 in the bathtub as in the winter season. It is designed to be processed, so that in this case it is possible to omit the neutralizer 11 at the option of the user.
【０００８】本実施例では、浴槽の湯に排ガス中の炭酸
ガスを溶解させる所謂炭酸風呂の機能を持たせている。
すなわち浴槽給湯配管５の上記シャワー給湯配管１２へ
の分岐点の下流側には、「お湯はり」電磁弁１５を介し
て、第二のエゼクターすなわち排ガス吸引用エゼクター
１６が介装され、上下の熱交換器２ａ，２ｂを通った排
ガスの一部が、このエゼクター１６の注入口に導入され
ており、更にその下流側に気水分離器１７が介装されて
いる。気水分離器１７としては、エア抜き弁あるいは上
部にエア抜き孔を有する貯水タンクを用いることができ
る。エゼクター１６と気水分離器１７の間の配管内で、
温水中に排ガス中の炭酸ガスが溶解し、余剰のガスが気
水分離器１７から外部に排出される。なお中和器１１を
省略する場合には、凝縮水吸引用エゼクター６から排ガ
スを吸引することも起こり得るので、排ガス吸引用エゼ
クター１６を使用しない場合でも、気水分離器１７は設
けておく必要がある。In this embodiment, the hot water in the bathtub has a so-called carbonated bath function for dissolving carbon dioxide gas in the exhaust gas.
That is, on the downstream side of the branch point of the bathtub hot water supply pipe 5 to the shower hot water supply pipe 12, a second ejector, that is, an exhaust gas suction ejector 16 is interposed via a "hot water" solenoid valve 15, and the upper and lower heat A part of the exhaust gas that has passed through the exchangers 2a and 2b is introduced into the injection port of the ejector 16, and a steam separator 17 is provided further downstream thereof. As the steam separator 17, an air bleeding valve or a water storage tank having an air bleeding hole in the upper portion can be used. In the pipe between the ejector 16 and the steam separator 17,
Carbon dioxide in the exhaust gas is dissolved in the warm water, and the surplus gas is discharged from the steam separator 17 to the outside. When the neutralizer 11 is omitted, exhaust gas may be sucked from the condensed water suction ejector 6, so that the steam separator 17 must be provided even when the exhaust gas suction ejector 16 is not used. There is.
【０００９】[0009]
【発明の効果】本発明によれば上述のように、高効率給
湯のために発生する凝縮水を、浴槽給湯時にエゼクター
により吸引して浴槽の湯に混入させることができるの
で、従来大きな設置スペースを必要とする上に、損耗の
激しかった凝縮水中和器を小型化することができ、また
給湯栓のみを使用している間は凝縮水を貯湯タンクに溜
めておいて、浴槽使用時にこれを消化するようにし、更
にシャワー用給湯配管を上記エゼクターの下流側から分
岐させて、シャワーを多用する夏期においても凝縮水を
浴槽給湯配管で希釈処理できるようにすれば、中和器を
省略することもできるという利点がある。As described above, according to the present invention, the condensed water generated for high-efficiency hot water supply can be sucked by the ejector and mixed into the hot water in the bathtub when the hot water is supplied to the bathtub. In addition, the condensed water neutralizer, which was extremely worn out, can be miniaturized, and the condensed water is stored in the hot water storage tank while using only the hot water tap, and this can be The neutralizer can be omitted if it is digested and the hot water supply pipe for the shower is branched from the downstream side of the ejector so that the condensed water can be diluted with the hot water supply pipe in the bathtub even in the summer when the shower is frequently used. There is an advantage that you can also.
【図１】本発明の一実施例の系統図。FIG. 1 is a system diagram of an embodiment of the present invention.
【図２】従来例の系統図。FIG. 2 is a system diagram of a conventional example.
１ ガスバーナ ２ａ 上段熱交換器 ２ｂ 下段熱交換器 ３ 受け皿 ４ 給湯配管 ５ 浴槽給湯配管 ６ 凝縮水吸引用エゼクター ７ 排水管 ８ 浴槽 ９ 貯水タンク １０ オーバーフロー管 １１ 中和器 １２ シャワー給湯配管 １３ 給湯栓 １４ 逆止弁 １５ 「お湯はり」電磁弁 １６ 排ガス吸引用エゼクター １７ 気水分離器 1 gas burner 2a upper heat exchanger 2b lower heat exchanger 3 saucer 4 hot water supply pipe 5 bathtub hot water supply pipe 6 condensed water suction ejector 7 drainage pipe 8 bathtub 9 water storage tank 10 overflow pipe 11 neutralizer 12 shower hot water supply pipe 13 hot water tap 14 Check valve 15 "Hot water" solenoid valve 16 Ejector for exhaust gas suction 17 Steam separator
Claims (4)
を上下二段に分け、その中間部に上段の熱交換器で発生
する凝縮水を受ける受け皿を設けると共に、給湯配管か
ら分岐した浴槽給湯配管にエゼクターを介装し、該エゼ
クターの注入口に上記受け皿からの排水管を接続するこ
とにより、浴槽へ供給される温水に上記凝縮水を混入せ
しめたことを特徴とする高効率給湯装置。1. A hot water supply heat exchanger heated by a gas burner is divided into upper and lower stages, and a tray for receiving condensed water generated in the upper heat exchanger is provided in an intermediate part between them and a bath water supply branched from a hot water supply pipe. A high-efficiency hot water supply device, characterized in that an ejector is provided in a pipe, and a drain pipe from the tray is connected to an inlet of the ejector to mix the condensed water with the hot water supplied to the bath.
バーフロー管を中和器に接続して、余剰の凝縮水を中和
処理したのち外部へ排出せしめたことを特徴とする請求
項１記載の高効率給湯装置。2. The overflow pipe of the water storage tank provided in the drain pipe is connected to a neutralizer to neutralize excess condensed water and then discharge the condensed water to the outside. High-efficiency hot water supply device.
からシャワー用給湯配管を分岐したことを特徴とする請
求項１記載の高効率給湯装置。3. The high-efficiency hot water supply apparatus according to claim 1, wherein a hot water supply pipe for shower is branched from a hot water supply pipe for bathtub on the downstream side of the ejector.
浴槽給湯配管に介装した第二のエゼクターの注入口に導
入すると共に、該エゼクターの下流側に気水分離器を介
装することにより、浴槽に供給される湯に炭酸ガスを溶
解せしめたことを特徴とする請求項１記載の高効率給湯
装置。4. A part of the exhaust gas passing through the upper and lower heat exchangers is introduced into an inlet of a second ejector provided in a bathtub hot water supply pipe, and a steam separator is provided downstream of the ejector. The high-efficiency hot water supply apparatus according to claim 1, wherein carbon dioxide gas is dissolved in the hot water supplied to the bath by doing so.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8923093A JP3306162B2 (en) | 1993-03-24 | 1993-03-24 | High efficiency water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8923093A JP3306162B2 (en) | 1993-03-24 | 1993-03-24 | High efficiency water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06272965A true JPH06272965A (en) | 1994-09-27 |
| JP3306162B2 JP3306162B2 (en) | 2002-07-24 |
Family
ID=13964952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8923093A Expired - Fee Related JP3306162B2 (en) | 1993-03-24 | 1993-03-24 | High efficiency water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3306162B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6631623B1 (en) * | 2002-09-05 | 2003-10-14 | Wcm Industries, Inc. | Condensate drain coupling and method of use thereof |
| KR100474177B1 (en) * | 2002-06-10 | 2005-03-08 | 주식회사 경동보일러 | Condensing Gas Boiler using Cistern Tank |
| JP2005127648A (en) * | 2003-10-27 | 2005-05-19 | Paloma Ind Ltd | Water heater |
| CN104596086A (en) * | 2015-01-16 | 2015-05-06 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and control method thereof |
| JP2018175000A (en) * | 2017-04-04 | 2018-11-15 | リンナイ株式会社 | Bathtub cleaning device |
| CN109140755A (en) * | 2018-10-11 | 2019-01-04 | 浙江建设职业技术学院 | A kind of gas heater waste heat reclaiming system and method |
| CN111721004A (en) * | 2017-03-09 | 2020-09-29 | 芜湖美的厨卫电器制造有限公司 | Water heater and control method thereof |
-
1993
- 1993-03-24 JP JP8923093A patent/JP3306162B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100474177B1 (en) * | 2002-06-10 | 2005-03-08 | 주식회사 경동보일러 | Condensing Gas Boiler using Cistern Tank |
| US6631623B1 (en) * | 2002-09-05 | 2003-10-14 | Wcm Industries, Inc. | Condensate drain coupling and method of use thereof |
| JP2005127648A (en) * | 2003-10-27 | 2005-05-19 | Paloma Ind Ltd | Water heater |
| CN104596086A (en) * | 2015-01-16 | 2015-05-06 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and control method thereof |
| CN104596086B (en) * | 2015-01-16 | 2017-07-25 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and its control method |
| CN111721004A (en) * | 2017-03-09 | 2020-09-29 | 芜湖美的厨卫电器制造有限公司 | Water heater and control method thereof |
| CN111721004B (en) * | 2017-03-09 | 2022-03-18 | 芜湖美的厨卫电器制造有限公司 | Water heater and control method thereof |
| JP2018175000A (en) * | 2017-04-04 | 2018-11-15 | リンナイ株式会社 | Bathtub cleaning device |
| CN109140755A (en) * | 2018-10-11 | 2019-01-04 | 浙江建设职业技术学院 | A kind of gas heater waste heat reclaiming system and method |
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|---|---|
| JP3306162B2 (en) | 2002-07-24 |
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