JPS6231814Y2 - - Google Patents
Info
- Publication number
- JPS6231814Y2 JPS6231814Y2 JP1980137396U JP13739680U JPS6231814Y2 JP S6231814 Y2 JPS6231814 Y2 JP S6231814Y2 JP 1980137396 U JP1980137396 U JP 1980137396U JP 13739680 U JP13739680 U JP 13739680U JP S6231814 Y2 JPS6231814 Y2 JP S6231814Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- temperature
- water supply
- flow rate
- hot water
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 71
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 description 27
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 239000000567 combustion gas Substances 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Description
【考案の詳細な説明】
この考案は例えば給湯暖房機やガス湯沸器等に
使用される温水供給装置に関する。[Detailed Description of the Invention] This invention relates to a hot water supply device used, for example, in a hot water heater or a gas water heater.
一般に、高効率のガス器具、特に温水供給装置
のように70〜80％の熱効率を有するものにあつて
は、熱交換器内に多量の冷水が通流した場合、熱
交換器の表面が低温になり易い。熱交換器の表面
が低温になると、熱交換器の表面に接触する空気
や燃焼ガス中に含まれている水分が凝縮して、熱
交換器の表面に結露が生じることが多い。熱交換
器の表面等に結露した水分は燃焼ガスとの化学反
応により弱酸性になり、熱交換器のフイン部を腐
食し、熱交換器の耐久性を低下させたり、ガスバ
ーナ等の燃焼部に腐食物が落下して、燃焼部が詰
まることがあり、このような場合には燃焼ガスが
不完全燃焼を起こすおそれがある。 In general, for high-efficiency gas appliances, especially those with a thermal efficiency of 70 to 80% such as hot water supply equipment, when a large amount of cold water flows through the heat exchanger, the surface of the heat exchanger will become cold. easy to become When the surface of a heat exchanger becomes cold, moisture contained in the air or combustion gas that comes into contact with the surface of the heat exchanger condenses, often resulting in dew condensation on the surface of the heat exchanger. Moisture that has condensed on the surface of the heat exchanger becomes weakly acidic due to a chemical reaction with the combustion gas, corroding the fins of the heat exchanger, reducing the durability of the heat exchanger, and causing damage to the combustion parts of gas burners, etc. Corrosive substances may fall and clog the combustion section, and in such a case, the combustion gas may cause incomplete combustion.
ところで、このような問題を除去するために、
従来は、熱交換器へ水を供給する給水管と熱交換
器から温水を導出する出湯管との間にバイパス管
を連結し、給水管内を通流する水の一部を前記バ
イパス管に流出させることにより、熱交換器内を
通流する冷水の量を減少させて、熱交換器の表面
の温度低下を防止したものがあつた。しかしなが
ら、上記バイパス管へ流出させる水の流量は例え
ば手動等により任意に設定されていたため、信頼
性が悪く、さらにバイパス管へ流出させる水の流
量を必要以上に多くして装置全体の熱効率を低下
させる問題もあつた。 By the way, to eliminate this problem,
Conventionally, a bypass pipe is connected between a water supply pipe that supplies water to a heat exchanger and a hot water outlet pipe that draws hot water from the heat exchanger, and a portion of the water flowing through the water supply pipe flows out to the bypass pipe. By doing so, the amount of cold water flowing through the heat exchanger was reduced, thereby preventing the temperature drop on the surface of the heat exchanger. However, the flow rate of the water flowing into the bypass pipe was arbitrarily set, for example, manually, resulting in poor reliability.Furthermore, the flow rate of water flowing into the bypass pipe was increased more than necessary, reducing the thermal efficiency of the entire device. There was also the problem of
この考案は上記事情にもとづいてなされたもの
で、その目的は、熱交換器への結露現象を確実に
防止して、熱交換器の耐久性の向上を図ることが
できるとともに燃焼部における不完全燃焼を防止
することができ、さらに全体の熱効率を一層高め
ることのできる信頼性の高い温水供給装置を提供
することにある。 This invention was made based on the above-mentioned circumstances, and its purpose is to provide a highly reliable hot water supply device which can reliably prevent condensation on the heat exchanger, thereby improving the durability of the heat exchanger and preventing incomplete combustion in the combustion section, and which can further increase the overall thermal efficiency.
以下、この考案を図面に示す一実施例を参照し
て説明する。図は給湯暖房機の温水供給装置を示
すもので、図中１は燃焼筒である。この燃焼筒１
内には熱交換器２が装着されている。この熱交換
器２は管２ａの表面に多数のフイン２ｂ…を並設
してなるもので、この熱交換器２の給水部は給水
管３の一端に連結され、また出湯部は出湯管４の
一端に連結されている。これらの給水管３および
出湯管４の各他端はそれぞれ図示しない放熱器に
連結され暖房用温水循環回路を形成している。そ
して、例えば図示しない循環ポンプにより給水管
３を通じて冷水が熱交換器２に供給され、この熱
交換器２で加熱された温水が出湯管４を通じて放
熱器に供給され、この放熱器により室内が暖房さ
れるようになつている。前記熱交換器２の下方に
はガスバーナ（燃焼部）５が配設されている。こ
のガスバーナ５は可撓性のガス管６に取付けられ
たガスノズル７からガスが供給され、適宜の着火
手段により着火されるようになつている。また、
前記燃焼筒１の上端部には温度検出器８が取着さ
れている。この温度検出器８は前記熱交換器２の
上方に位置させてあり、この温度検出器８により
熱交換器２を加熱したガスバーナ５の排出ガスの
温度が検出されるようになつている。この排出ガ
スの温度は一般に、ガスバーナ５に供給されるガ
ス量が少ない場合には低く、また熱交換器２内に
通流する水の流量が多い場合にも低くなるもので
ある。 This invention will be described below with reference to an embodiment shown in the drawings. The figure shows a hot water supply device for a hot water heater, and numeral 1 in the figure is a combustion tube. This combustion tube 1
A heat exchanger 2 is installed inside. This heat exchanger 2 has a large number of fins 2b arranged in parallel on the surface of a pipe 2a, the water supply part of this heat exchanger 2 is connected to one end of the water supply pipe 3, and the hot water supply part is connected to the water supply pipe 4. is connected to one end of the The other ends of the water supply pipe 3 and hot water outlet pipe 4 are each connected to a radiator (not shown) to form a hot water circulation circuit for heating. For example, cold water is supplied to the heat exchanger 2 through the water supply pipe 3 by a circulation pump (not shown), and hot water heated by the heat exchanger 2 is supplied to the radiator through the hot water outlet pipe 4, and the radiator heats the room. It is becoming more and more common. A gas burner (combustion section) 5 is arranged below the heat exchanger 2. This gas burner 5 is supplied with gas from a gas nozzle 7 attached to a flexible gas pipe 6, and is ignited by an appropriate ignition means. Also,
A temperature detector 8 is attached to the upper end of the combustion tube 1. This temperature detector 8 is located above the heat exchanger 2, and is designed to detect the temperature of the exhaust gas from the gas burner 5 that heated the heat exchanger 2. The temperature of this exhaust gas is generally low when the amount of gas supplied to the gas burner 5 is small, and also low when the flow rate of water flowing into the heat exchanger 2 is large.
一方、前記給水管３と出湯管４との間にはバイ
パス管９が連結されている。このバイパス管９と
前記給水管３との連結部には前記給水管３からバ
イパス管９内へ流出させる水の流量を調節する流
量調節弁１０が装着されている。この流量調節弁
１０は例えば弁体１０ａとコイル等の駆動部１０
ｂとから形成され、駆動部１０ｂに供給される電
気量に比例して弁体１０ａが駆動される、すなわ
ち弁１０の開度が制御されるようになつている。
前記駆動部１０ｂは制御手段１１に接続されてい
る。また、この制御手段１１は前記温度検出器８
に接続されている。この制御手段１１は温度検出
器８に検出される前記排出ガスの温度に応じて前
記流量調節弁１０の開度を開閉制御し前記熱交換
器２が常に所定温度以上に加熱される状態に保持
するものである。すなわち、前記熱交換器２に結
露が生じない程度の前記排出ガス温度を予め設定
し、温度検出器８に検出される排出ガスの温度が
前記設定温度よりも高い場合には前記流量調節弁
１０の開度を小にして熱交換器２内に供給される
水の流量を増加させ、温度検出器８に検出される
排出ガスの温度が前記設定温度よりも低い場合に
は前記流量調節弁１０の開度を大にして熱交換器
２内に供給される水の量を減少させることによ
り、熱交換器２が常に結露が生じない温度に加熱
されている状態に保持されるようになつている。 On the other hand, a bypass pipe 9 is connected between the water supply pipe 3 and the hot water outlet pipe 4. A flow rate control valve 10 for adjusting the flow rate of water flowing out from the water supply pipe 3 into the bypass pipe 9 is installed at the connecting portion between the bypass pipe 9 and the water supply pipe 3. This flow rate regulating valve 10 includes, for example, a valve body 10a and a drive unit 10 such as a coil.
The valve body 10a is driven in proportion to the amount of electricity supplied to the drive unit 10b, that is, the opening degree of the valve 10 is controlled.
The drive section 10b is connected to a control means 11. Further, this control means 11 is connected to the temperature detector 8.
It is connected to the. This control means 11 controls opening and closing of the flow rate regulating valve 10 according to the temperature of the exhaust gas detected by the temperature detector 8, and maintains the heat exchanger 2 in a state where it is always heated to a predetermined temperature or higher. It is something to do. That is, the temperature of the exhaust gas is set in advance to such an extent that no condensation occurs in the heat exchanger 2, and when the temperature of the exhaust gas detected by the temperature detector 8 is higher than the set temperature, the flow rate regulating valve 10 The flow rate of water supplied into the heat exchanger 2 is increased by decreasing the opening degree of the flow rate regulating valve 10, and when the temperature of the exhaust gas detected by the temperature detector 8 is lower than the set temperature, the flow rate regulating valve 10 By increasing the opening degree and reducing the amount of water supplied into the heat exchanger 2, the heat exchanger 2 can be maintained at a constant temperature at which condensation does not occur. There is.
そこで、上記構成の本装置を使用すると、まず
図示しない循環ポンプ等により給水管３から熱交
換器２内に冷水が供給される。そして、この熱交
換器２は、ガスバーナ５により加熱され、送り込
まれた冷水を加熱する。このとき、温度検出器８
で排出ガスの温度が検出されており、検出温度が
前記設定温度より高い場合は、制御手段１１によ
り流量調節弁１０の開度が小さくなるように制御
され、熱交換器２内に供給される冷水の流量を増
加することにより、熱効率が高められる。また、
前記検出温度が前記設定温度より低い場合は、制
御手段１１により流量調節弁１０の開度が大きく
なるように制御され、熱交換器２内に供給される
冷水の流量を減少することにより、熱交換器２の
表面に結露現象が生じることが確実に防止され
る。また、前記熱交換器２で加熱された温水は前
記バイパス管９を通じて送られてくる水と混合さ
れ、放熱器に送られる。そして、この放熱器によ
り室内を暖房したのち、室内の空気との熱交換に
より冷却された水は再び給水管３内に送出され
る。 Therefore, when this apparatus having the above configuration is used, cold water is first supplied into the heat exchanger 2 from the water supply pipe 3 by a circulation pump or the like (not shown). This heat exchanger 2 is heated by a gas burner 5 and heats the cold water sent therein. At this time, the temperature sensor 8
The temperature of the exhaust gas is detected, and if the detected temperature is higher than the set temperature, the control means 11 controls the opening degree of the flow rate regulating valve 10 to be small, and the exhaust gas is supplied into the heat exchanger 2. By increasing the flow rate of cold water, thermal efficiency is increased. Also,
When the detected temperature is lower than the set temperature, the control means 11 controls the opening of the flow rate regulating valve 10 to increase the flow rate of the cold water supplied into the heat exchanger 2, thereby reducing heat. The occurrence of dew condensation on the surface of the exchanger 2 is reliably prevented. Further, the hot water heated by the heat exchanger 2 is mixed with the water sent through the bypass pipe 9 and sent to the radiator. After the room is heated by this radiator, the water is cooled by heat exchange with the indoor air and is sent into the water supply pipe 3 again.
かくして、上記構成のものにあつては、排出ガ
ス温度に応じて流量調節弁１０の開度を適宜可変
制御し、給水管３からバイパス管９内に流出させ
る水の流量を調節することにより、熱交換器２内
を通流する水の流量を適宜可変制御するようにし
たので、ガスバーナ５の燃焼状態がどのような状
態になつていたとしても、熱交換器２は常に略一
定な比較的高温度に保持される。したがつて、熱
交換器２の表面に結露現象が生じることはなく、
そのため従来のように熱交換器のフイン部が腐食
されることはないので、熱交換器の耐久性を向上
させることができるうえ、燃焼ガスが不完全燃焼
を起こすことを防止することができる。さらに、
排出ガス温度が高い場合には流量調節弁１０の開
度を小さくして熱交換器２内へ供給される冷水の
流量を増加させることができるので、全体的な熱
効率の向上を図ることができる。 Thus, in the case of the above structure, by appropriately controlling the opening degree of the flow control valve 10 according to the exhaust gas temperature and adjusting the flow rate of water flowing out from the water supply pipe 3 into the bypass pipe 9, Since the flow rate of water flowing through the heat exchanger 2 is variably controlled as appropriate, the heat exchanger 2 always maintains a relatively constant, relatively constant flow rate no matter what the combustion state of the gas burner 5 is. held at high temperature. Therefore, no dew condensation occurs on the surface of the heat exchanger 2,
Therefore, the fins of the heat exchanger are not corroded as in the conventional case, so the durability of the heat exchanger can be improved, and incomplete combustion of combustion gas can be prevented. moreover,
When the exhaust gas temperature is high, the opening degree of the flow control valve 10 can be reduced to increase the flow rate of cold water supplied into the heat exchanger 2, thereby improving overall thermal efficiency. .
なお、この考案は上記実施例に限定されるもの
ではない。例えば、流量調節弁１０は必ずしもバ
イパス管９と給水管３との連結部に設ける必要は
なく、バイパス管９内の任意の位置に設ける構成
であつてもよい。また、上記実施例では本装置を
給湯暖房機に使用した場合を示したが、ガス湯沸
器等にも使用することができることは勿論であ
る。 Note that this invention is not limited to the above embodiments. For example, the flow rate control valve 10 does not necessarily need to be provided at the connection between the bypass pipe 9 and the water supply pipe 3, and may be provided at any position within the bypass pipe 9. Further, in the above embodiment, the case where the present device is used in a hot water heater is shown, but it goes without saying that it can also be used in a gas water heater or the like.
以上説明したように、この考案によれば、燃焼
部の燃焼により生じる排出ガスの温度を検出する
温度検出器を設けるとともに、熱交換器内に冷水
を供給する給水管と前記熱交換器から温水を送出
する出湯管との間にバイパス管を連結し、前記給
水管から前記バイパス管内へ流出させる水の流量
を調節する流量調節弁を、制御手段により前記排
出ガスの温度に応じて可変制御するようにしたの
で、熱交換器は常に略一定な比較的高温度で加熱
された状態に保持することができ、そのため熱交
換器への結露現象を確実に防止して、熱交換器の
耐久性の向上を図ることができるとともに燃焼部
における不完全燃焼を防止することができ、さら
に全体の熱効率を一層高めることのできる信頼性
の高い温水供給装置を提供することができる。 As explained above, according to this invention, a temperature detector is provided to detect the temperature of exhaust gas generated by combustion in the combustion section, and a water supply pipe that supplies cold water into the heat exchanger and hot water from the heat exchanger are provided. A bypass pipe is connected between a hot water tap pipe that sends out hot water, and a flow rate control valve that adjusts the flow rate of water flowing from the water supply pipe into the bypass pipe is variably controlled by a control means according to the temperature of the exhaust gas. As a result, the heat exchanger can always be kept heated at a relatively constant and relatively high temperature, which reliably prevents condensation on the heat exchanger and increases the durability of the heat exchanger. It is possible to provide a highly reliable hot water supply device that can improve the heat efficiency, prevent incomplete combustion in the combustion section, and further improve the overall thermal efficiency.
図はこの考案の一実施例を示す要部の概略構成
図である。
２……熱交換器、３……給水管、４……出湯
管、５……ガスバーナ（燃焼部）、８……温度検
出器、９……バイパス管、１０……流量調節弁、
１１……制御手段。
The figure is a schematic diagram of the main parts of an embodiment of this invention. 2... Heat exchanger, 3... Water supply pipe, 4... Hot water outlet pipe, 5... Gas burner (combustion part), 8... Temperature detector, 9... Bypass pipe, 10... Flow rate control valve,
11... Control means.
Claims (1)
出湯管に連結された熱交換器と、この熱交換器を
加熱する燃焼部と、この燃焼部の燃焼により生じ
る排出ガスの温度を検出する温度検出器と、一端
部が前記給水管に連結されるとともに他端部が前
記出湯管に連結されたバイパス管と、前記給水管
から前記バイパス管内へ流出させる水の流量を調
節する流量調節弁と、前記温度検出器に接続され
前記温度検出器に検出される前記排出ガスの温度
に応じて前記流量調節弁を前記熱交換器が常に所
定温度以上に加熱される状態に保持するように制
御する制御手段とを具備したことを特徴とする温
水供給装置。 A heat exchanger in which the water supply part is connected to the water supply pipe and the hot water outlet part is connected to the hot water outlet pipe, a combustion part that heats this heat exchanger, and a temperature that detects the temperature of exhaust gas generated by combustion in this combustion part. a detector, a bypass pipe whose one end is connected to the water supply pipe and whose other end is connected to the hot water outlet pipe, and a flow rate control valve that adjusts the flow rate of water flowing out from the water supply pipe into the bypass pipe. , connected to the temperature detector and controlling the flow rate adjustment valve to maintain the heat exchanger in a state where the heat exchanger is always heated to a predetermined temperature or higher according to the temperature of the exhaust gas detected by the temperature detector. A hot water supply device characterized by comprising a control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980137396U JPS6231814Y2 (en) | 1980-09-27 | 1980-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980137396U JPS6231814Y2 (en) | 1980-09-27 | 1980-09-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5761440U JPS5761440U (en) | 1982-04-12 |
| JPS6231814Y2 true JPS6231814Y2 (en) | 1987-08-14 |
Family
ID=29497477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980137396U Expired JPS6231814Y2 (en) | 1980-09-27 | 1980-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6231814Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592364Y2 (en) * | 1978-10-28 | 1984-01-23 | 松下電工株式会社 | hot water mixing valve |
-
1980
- 1980-09-27 JP JP1980137396U patent/JPS6231814Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5761440U (en) | 1982-04-12 |
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