JPH09119708A - Instantaneous water heater - Google Patents
Instantaneous water heaterInfo
- Publication number
- JPH09119708A JPH09119708A JP8292876A JP29287696A JPH09119708A JP H09119708 A JPH09119708 A JP H09119708A JP 8292876 A JP8292876 A JP 8292876A JP 29287696 A JP29287696 A JP 29287696A JP H09119708 A JPH09119708 A JP H09119708A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- temperature
- water
- path
- route
- 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 197
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 239000008400 supply water Substances 0.000 abstract 2
- 238000009835 boiling Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、瞬間湯沸器の出湯
制御に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to hot water outlet control of an instantaneous water heater.
【０００２】[0002]
【従来の技術】従来、瞬間湯沸器の出湯湯温の調節は、
熱交換器加熱用のバーナの燃焼量を変化させて行ってい
る。バーナの燃焼範囲は、複数のバーナを用いる等によ
りできるだけ広くする工夫がされているが限界があり、
最大燃焼量を大きくすると、最小燃焼量も大きくなる。2. Description of the Related Art Conventionally, the hot water temperature of an instant water heater is controlled by
This is done by changing the combustion amount of the burner for heating the heat exchanger. The burner combustion range is designed to be as wide as possible by using multiple burners, but there is a limit.
When the maximum combustion amount is increased, the minimum combustion amount also increases.
【０００３】[0003]
【発明が解決しようとする課題】このような瞬間湯沸器
では、夏期に於いて上水の温度が高い場合には、小流量
で適温（例えば３５℃程度）の湯を得ることが難しい。
また、このような出湯湯温の調節では、比較的短い時間
間隔での間欠的使用に於いて、熱交換器内の後沸きによ
る高温出湯（オーバーシュート）や熱交換器加熱用バー
ナの点火遅れによる冷水の混入（アンダーシュート）等
の不都合が生じ、出湯温度が安定化するまで相当な時間
を要する。With such an instant water heater, it is difficult to obtain hot water of a suitable temperature (for example, about 35 ° C.) with a small flow rate when the temperature of the clean water is high in the summer.
Also, in such adjustment of hot water temperature, in intermittent use at relatively short time intervals, high temperature hot water (overshoot) due to post-boiling in the heat exchanger and ignition delay of the heat exchanger heating burner Due to inconvenience such as mixing of cold water (undershoot), it takes a considerable amount of time for the hot water temperature to stabilize.
【０００４】そこで、本発明は、給水温度が高い場合に
も低温小量の給湯ができる等、給湯制御範囲の拡大とと
もに出湯量及び出湯湯温の安定化を図った瞬間湯沸器を
提供することを目的とする。Therefore, the present invention provides an instantaneous water heater which is capable of supplying a small amount of hot water at a low temperature even when the temperature of the supplied water is high, and the amount of discharged hot water and the temperature of the discharged hot water are stabilized while the hot water supply control range is expanded. The purpose is to
【０００５】[0005]
【課題を解決するための手段】本発明の瞬間湯沸器は、
湯経路（１）及び水経路（５）に給水を分離し、湯経路
側では設定温度より高く湯温を制御した後、合流路側で
得られた出湯湯温に応じてガス供給量を制御することに
より、設定湯温での出湯を実現したものである。The instant water heater of the present invention comprises:
Water supply is separated into the hot water path (1) and the water path (5), and the hot water temperature is controlled to be higher than the set temperature on the hot water path side, and then the gas supply amount is controlled according to the hot water temperature obtained at the joint flow path side. As a result, hot water at the set hot water temperature is realized.
【０００６】請求項１に記載の本発明の瞬間湯沸器は、
第１図及び第２図に例示するように、加熱すべき給水
を、ガス燃焼によるバーナ（１２）で加熱される熱交換
器（３）を備える湯経路（１）と、この湯経路に並列に
設けられた水経路（５）とに分流させた後、前記湯経路
の加熱によって得られる湯と前記水経路からの水とを混
合して出湯を行う瞬間湯沸器であって、出湯時に前記湯
経路側の湯温を設定温度より高い温度に制御した後、前
記湯経路側の湯と前記水経路側の水とを合流路（６）側
の出湯湯温に応じて前記バーナに対する燃焼ガス量を制
御することにより、前記出湯湯温を設定湯温に制御する
制御手段（コントローラ１３）を備えたことを特徴とす
る。このように構成すれば、出湯時に湯経路側の湯温を
設定湯温に高くし、合流路側の出湯湯温に応じてバーナ
燃焼を制御することにより、出湯湯温を設定湯温に制御
するという段階的な燃焼制御によって所望の設定温度に
よる出湯を実現しており、その結果、給水温度が高い場
合にも低温小量の給湯ができる等、給湯制御範囲の拡大
とともに出湯量及び出湯湯温の安定化を図ることができ
る。The instant water heater of the present invention according to claim 1 is
As illustrated in FIG. 1 and FIG. 2, the feed water to be heated is provided in parallel with the hot water passage (1) including the heat exchanger (3) heated by the burner (12) by gas combustion. An instantaneous water heater that diverts water to a water path (5) provided in the hot water path and then mixes hot water obtained by heating the hot water path with water from the water path to discharge hot water. After controlling the hot water temperature on the hot water path side to a temperature higher than a set temperature, the hot water on the hot water path side and the water on the water path side are burned to the burner according to the hot water temperature on the joint flow path (6) side. A control means (controller 13) for controlling the temperature of the discharged hot water to a set hot water temperature by controlling the amount of gas is provided. According to this structure, the hot water temperature on the hot water path side is raised to the set hot water temperature when the hot water is discharged, and the burner combustion is controlled according to the hot water discharge temperature on the confluence side to control the hot water discharge temperature to the preset hot water temperature. With the stepwise combustion control, hot water is delivered at a desired set temperature, and as a result, even if the water temperature is high, small amounts of hot water can be supplied at low temperature. Can be stabilized.
【０００７】請求項２に記載の本発明の瞬間湯沸器は、
制御手段が出湯開始時、第１の温度センサ（１５ａ）に
よる湯経路側の検出湯温により燃焼制御を行って設定温
度より高い湯温を得た後、第２の温度センサ（１５ｂ）
によって合流路側の検出湯温により燃焼制御を行って、
出湯湯温を設定湯温に制御することを特徴とする。即
ち、この瞬間湯沸器は、加熱すべき給水を、熱交換器を
備える湯経路と、この湯経路に並列に設けられた水経路
とに分流させた後、湯経路の加熱によって得られる湯と
水経路からの水とを混合して出湯を行う。その場合、出
湯開始時には、第１の温度センサによって検出された湯
温に基づいて、設定湯温より湯経路側の湯温が高くなる
燃焼制御を行った後、合流路側の湯温を第２の温度セン
サによって検出し、その検出湯温に応じてバーナに対す
る燃焼ガスの供給を制御し、混合湯温を設定湯温に制御
する。The instant water heater of the present invention according to claim 2 is
When the control means starts the hot water discharge, the first temperature sensor (15a) performs combustion control by the hot water temperature detected on the hot water path side to obtain a hot water temperature higher than the set temperature, and then the second temperature sensor (15b).
Combustion control is performed according to the detected hot water temperature on the side of
It is characterized in that the temperature of the discharged hot water is controlled to the set hot water temperature. That is, the instant water heater divides the feed water to be heated into a hot water path provided with a heat exchanger and a water path provided in parallel with the hot water path, and then obtains hot water obtained by heating the hot water path. And the water from the water path are mixed and tapped. In this case, at the start of hot water discharge, after performing the combustion control in which the hot water temperature on the hot water path side is higher than the preset hot water temperature based on the hot water temperature detected by the first temperature sensor, the hot water temperature on the confluence side is set to the second hot water temperature. The temperature of the hot water is detected by the temperature sensor and the supply of the combustion gas to the burner is controlled according to the detected hot water temperature to control the mixed hot water temperature to the set hot water temperature.
【０００８】このような燃焼制御によれば、バーナの最
小燃焼量が比較的大きい場合にも小流量で低い温度の給
湯を行うことができる。また、比較的短い時間間隔での
間欠的使用に於いて、湯経路内の湯には、熱交換器内の
後沸きによる高温出湯（オーバーシュート）やバーナの
点火遅れによる冷水の混入（アンダーシュート）等があ
っても、合流路の湯には伝達されない。その結果、安定
した出湯が得られる。According to such combustion control, hot water can be supplied at a low temperature with a small flow rate even when the minimum combustion amount of the burner is relatively large. In addition, during intermittent use at relatively short time intervals, hot water in the hot water passage may overheat due to post-boiling in the heat exchanger, or cold water may be mixed due to burner ignition delay (undershoot). ), Etc., is not transmitted to the hot water in the joint flow path. As a result, a stable tapping water is obtained.
【０００９】そして、バーナは湯経路の第１の温度セン
サにより検知した湯温と設定湯温に基づいて、この湯温
を設定温度よりも高い所定の温度とするように制御した
後、合流路の第２の温度センサにより検知した湯温に基
づいて設定温度を保持するようにフィードバック制御を
行うので、出湯湯温を安定化することができる。Then, the burner controls the hot water temperature to a predetermined temperature higher than the preset temperature based on the hot water temperature detected by the first temperature sensor in the hot water passage and the preset hot water temperature, and then the confluent passage. Since the feedback control is performed so as to maintain the set temperature based on the hot water temperature detected by the second temperature sensor, it is possible to stabilize the hot water temperature.
【００１０】[0010]
【発明の実施の形態】以下、本発明を図面に示した実施
形態を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.
【００１１】図１は、本発明の瞬間湯沸器の実施形態を
示している。湯沸器２は、熱交換器３を通る湯経路１
と、この湯経路１と並列に、熱交換器３の上流側で分岐
させ、下流側で混合弁４を介して合流させる水経路５と
を備えている。FIG. 1 shows an embodiment of the instant water heater of the present invention. The water heater 2 is a hot water path 1 passing through the heat exchanger 3.
And a water path 5 that is branched in parallel with the hot water path 1 on the upstream side of the heat exchanger 3 and merges via the mixing valve 4 on the downstream side.
【００１２】混合弁４は、図２及び図３に示すように、
合流路６中に設けた熱応動素子７により弁体８を進退さ
せて水経路５と湯経路１の流量比率を変化させる構成と
すると共に、熱応動素子７の位置を設定する電動式作動
機構等の作動機構９を備えている。The mixing valve 4 is, as shown in FIGS. 2 and 3,
The valve element 8 is moved forward and backward by the heat responsive element 7 provided in the joint flow path 6 to change the flow rate ratio between the water path 5 and the hot water path 1, and an electric actuation mechanism for setting the position of the heat responsive element 7 is provided. And the like.
【００１３】熱応動素子７は、例えばワックスを封入し
て熱膨張する構成とし、膨張による弁体８の移動方向が
湯経路１の湯量を少なくすると共に水経路５の水量を多
くする方向としている。この熱応動素子７は、バイアス
ばね１０を介して作動体１１により位置を調節する構成
としており、この作動体１１は作動機構９により作動し
て図中上下方向に移動させる構成としている。The heat responsive element 7 has a structure in which, for example, wax is encapsulated for thermal expansion, and the moving direction of the valve body 8 due to expansion is such that the amount of hot water in the hot water passage 1 is reduced and the amount of water in the hot water passage 5 is increased. . The thermal responsive element 7 is configured to adjust its position by an actuating body 11 via a bias spring 10. The actuating body 11 is actuated by an actuating mechanism 9 to move in the vertical direction in the figure.
【００１４】以上の構成に於いて、図２は、湯経路１の
湯量が多い状態を表している。この状態に於いてワック
スが膨張して図３に示すように熱応動素子７が熱膨張す
ると、弁体８を下方に移動して湯経路１の湯量を少なく
すると共に、水経路５の水量を多くして合流路６中の湯
温を低下させ、逆に湯温が低下して熱応動素子７が収縮
すると、弁体８を上方に移動して水経路５の水量を少な
くすると共に、湯経路１の湯量を多くして合流路６中の
湯温を上昇させることにより、合流路６を流れる湯温を
制御することができる。In the above configuration, FIG. 2 shows a state in which the amount of hot water in the hot water passage 1 is large. In this state, when the wax expands and the heat responsive element 7 thermally expands as shown in FIG. 3, the valve body 8 is moved downward to reduce the amount of hot water in the hot water passage 1 and reduce the amount of water in the water passage 5. When the hot water temperature in the combined flow path 6 is decreased to a large amount and the hot water temperature is decreased to the contrary and the heat responsive element 7 contracts, the valve body 8 is moved upward to reduce the amount of water in the water path 5 and By increasing the amount of hot water in the passage 1 and raising the hot water temperature in the joint flow channel 6, the temperature of the hot water flowing through the joint flow channel 6 can be controlled.
【００１５】そして、作動機構９により熱応動素子７を
下方に変位すると、設定温度を低下させることができ、
逆に上方に変位させると設定温度を上昇させることがで
きる。When the heat responsive element 7 is displaced downward by the operating mechanism 9, the set temperature can be lowered,
On the contrary, if it is displaced upward, the set temperature can be raised.
【００１６】また、１２は熱交換器３加熱用のバーナ、
１３は制御手段としてのコントローラ、１４は出湯湯温
設定器であり、また、１５ａ、１５ｂは、夫々湯経路１
に於ける熱交換器３の下流側と合流路６に設けたサーミ
スタ等の第１及び第２の温度センサである。Further, 12 is a burner for heating the heat exchanger 3,
Reference numeral 13 is a controller as control means, 14 is a hot water temperature setting device for hot water, and 15a and 15b are hot water paths 1 respectively.
The first and second temperature sensors, such as the thermistors, provided on the downstream side of the heat exchanger 3 and the joint flow path 6 in FIG.
【００１７】コントローラ１３は、バーナ１２を湯経路
１の温度センサ１５ａにより検知した湯温と出湯湯温設
定器１４の設定温度に基づいて、この湯温を設定温度よ
りも高い所定の温度、例えば設定温度よりも２０℃高い
温度とするようにバーナ１２の燃焼制御を行った後、合
流路６の温度センサ１５ｂにより検知した湯温に基づい
て設定温度を保持するようにフィードバック制御を行
う。即ち、出湯開始に応じて温度センサ１５ａの湯温検
出に基づいて湯経路１側の湯温を設定温度より高くなる
ように燃焼制御を行った後、温度センサ１５ｂの湯温検
出に基づいて合流路６側の出湯湯温が設定湯温になるよ
うに燃焼制御を行う。Based on the hot water temperature detected by the temperature sensor 15a of the hot water passage 1 of the burner 12 and the set temperature of the hot water hot water temperature setter 14, the controller 13 sets the hot water temperature to a predetermined temperature higher than the set temperature, for example, After the combustion control of the burner 12 is performed so that the temperature is higher than the set temperature by 20 ° C., the feedback control is performed so that the set temperature is maintained based on the hot water temperature detected by the temperature sensor 15b of the confluent passage 6. That is, after the hot water is detected by the temperature sensor 15a in response to the start of hot water discharge, combustion control is performed so that the hot water temperature on the hot water path 1 side becomes higher than the set temperature, and then the hot water temperature is detected by the temperature sensor 15b. Combustion control is performed so that the hot water temperature on the road 6 side becomes the set hot water temperature.
【００１８】また、このコントローラ１３は上記のよう
にバーナ１２の燃焼量を制御する他、作動機構９を作動
して熱応動素子７に対し位置設定する構成である。な
お、図に於いて、１６は流水スイッチ、１７は水量制御
弁、１８は逆止弁、１９は出湯口、２０は戻しばねであ
る。The controller 13 controls the combustion amount of the burner 12 as described above, and also operates the actuating mechanism 9 to set the position with respect to the heat responsive element 7. In the figure, 16 is a water flow switch, 17 is a water amount control valve, 18 is a check valve, 19 is a tap hole, and 20 is a return spring.
【００１９】[0019]
【発明の効果】以上説明したように、本発明によれば、
次のような効果が得られる。 ａ．熱交換器で昇温した湯を上水で冷まして出湯口から
出湯することができるので、バーナの最小燃焼量が比較
的大きい場合にも低い温度の給湯を行うことができ、夏
期に於いて上水の温度が高い場合にも、少流量で適温
（例えば３５℃程度）の湯を得ることが容易である。 ｂ．比較的短い時間間隔での間欠的使用に於いて、湯経
路内の湯には、熱交換器内の後沸きによる高温出湯（オ
ーバーシュート）や熱交換器加熱用バーナの点火遅れに
よる冷水の混入（アンダーシュート）等があっても混合
弁を経た合流路の湯には伝達させないで出湯湯温の一定
化とともに、安定した給湯を実現できる。As described above, according to the present invention,
The following effects can be obtained. a. Since the hot water heated by the heat exchanger can be cooled with tap water and discharged from the tap, it is possible to supply hot water at a low temperature even when the minimum combustion amount of the burner is relatively large, and in the summer. Even if the temperature of the tap water is high, it is easy to obtain hot water of a suitable temperature (for example, about 35 ° C.) with a small flow rate. b. During intermittent use at relatively short time intervals, the hot water in the hot water passage will enter the hot water due to post-boiling in the heat exchanger (overshoot) and cold water will be mixed due to the ignition delay of the burner for heating the heat exchanger. Even if there is (undershoot) or the like, the temperature of the discharged hot water can be made constant and stable hot water supply can be realized without being transmitted to the hot water in the joint flow path that has passed through the mixing valve.
【図１】本発明の瞬間湯沸器の実施形態を示す系統説明
図である。FIG. 1 is a system explanatory view showing an embodiment of an instant water heater of the present invention.
【図２】混合弁の実施例の構成を示す断面図である。FIG. 2 is a sectional view showing a configuration of an embodiment of a mixing valve.
【図３】混合弁の動作を示した断面図である。FIG. 3 is a sectional view showing the operation of the mixing valve.
１ 湯経路 ２ 湯沸器 ３ 熱交換器 ４ 混合弁 ５ 水経路 ６ 合流路 １２ バーナ １３ コントローラ（制御手段） １４ 出湯温度設定器 １５ａ 第１の温度センサ １５ｂ 第２の温度センサ 1 Hot Water Path 2 Water Heater 3 Heat Exchanger 4 Mixing Valve 5 Water Path 6 Combined Flow Path 12 Burner 13 Controller (Control Means) 14 Hot Water Temperature Setting Device 15a First Temperature Sensor 15b Second Temperature Sensor
Claims (2)
ナで加熱される熱交換器を備える湯経路と、この湯経路
に並列に設けられた水経路とに分流させた後、前記湯経
路の加熱によって得られる湯と前記水経路からの水とを
混合して出湯を行う瞬間湯沸器であって、 出湯時に前記湯経路側の湯温を設定温度より高い温度に
制御した後、前記湯経路側の湯と前記水経路側の水とを
合流路側の出湯温度に応じて前記バーナに対する燃焼ガ
ス量を制御することにより、前記出湯温度を設定温度に
制御する制御手段を備えたことを特徴とする瞬間湯沸
器。1. A water supply path to be heated is split into a hot water path provided with a heat exchanger heated by a burner by gas combustion and a water path provided in parallel with the hot water path, and then the hot water path of the hot water path An instantaneous water heater that mixes hot water obtained by heating and water from the water path to discharge hot water, and controls the hot water temperature on the hot water path side to a temperature higher than a set temperature at the time of hot water discharge. The hot water on the path side and the water on the water path side are provided with control means for controlling the hot water temperature to a set temperature by controlling the amount of combustion gas for the burner according to the hot water temperature on the combined flow path side. And the instant water heater.
度センサによる湯経路側の検出湯温により燃焼制御を行
って設定温度より高い湯温を得た後、第２の温度センサ
によって合流路側の検出湯温により燃焼制御を行って、
出湯湯温を設定湯温に制御することを特徴とする請求項
１記載の瞬間湯沸器。2. The control means performs combustion control at a hot water temperature detected on the hot water path side by the first temperature sensor to obtain a hot water temperature higher than a set temperature at the time of starting hot water discharge, and then by the second temperature sensor. Combustion control is performed by the detected hot water temperature on the side of the joint flow,
The instant water heater according to claim 1, wherein the hot water temperature is controlled to a preset hot water temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8292876A JP2988877B2 (en) | 1996-11-05 | 1996-11-05 | Instant water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8292876A JP2988877B2 (en) | 1996-11-05 | 1996-11-05 | Instant water heater |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1344754A Division JP2611017B2 (en) | 1989-12-30 | 1989-12-30 | Instant water heater hot water supply mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09119708A true JPH09119708A (en) | 1997-05-06 |
| JP2988877B2 JP2988877B2 (en) | 1999-12-13 |
Family
ID=17787530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8292876A Expired - Fee Related JP2988877B2 (en) | 1996-11-05 | 1996-11-05 | Instant water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2988877B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6048890A (en) * | 1995-02-24 | 2000-04-11 | Kaken Pharmaceutical Co., Ltd. | Phenylamidinothiophene derivatives and anti-inflammatory agent containing the same |
-
1996
- 1996-11-05 JP JP8292876A patent/JP2988877B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6048890A (en) * | 1995-02-24 | 2000-04-11 | Kaken Pharmaceutical Co., Ltd. | Phenylamidinothiophene derivatives and anti-inflammatory agent containing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2988877B2 (en) | 1999-12-13 |
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