JPS6330033Y2 - - Google Patents
Info
- Publication number
- JPS6330033Y2 JPS6330033Y2 JP1980102564U JP10256480U JPS6330033Y2 JP S6330033 Y2 JPS6330033 Y2 JP S6330033Y2 JP 1980102564 U JP1980102564 U JP 1980102564U JP 10256480 U JP10256480 U JP 10256480U JP S6330033 Y2 JPS6330033 Y2 JP S6330033Y2
- Authority
- JP
- Japan
- Prior art keywords
- switching means
- exhaust fan
- fan device
- stop
- solenoid valve
- 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 19
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
Description
【考案の詳細な説明】
本考案は放熱器と燃焼用バーナによつて加熱さ
れる熱交換器とで形成される温水流路中にポンプ
を介装して温水を循環させて暖房する瞬間湯沸式
暖房器に関し、その目的とするところは低負荷時
の熱効率の低下を防ぐことにある。[Detailed description of the invention] This invention provides instant hot water heating by circulating hot water by interposing a pump in a hot water flow path formed by a radiator and a heat exchanger heated by a combustion burner. The purpose of boiler heaters is to prevent a decrease in thermal efficiency during low loads.
従来、一般にこの型式の暖房器では排気能力の
向上と熱効率の上昇を目的として排気用フアンが
設置されている。ところが全開燃焼時は燃料の量
に合わせて燃焼用空気量を一定に維持し熱効率を
ある程度確保し得るものの、例えば低負荷時の燃
焼時には急激な効率の低下を招くものである。こ
の原因は主としてON−OFFサイクル繰り返し時
の燃焼停止後も排気用フアンが慣性力により暫く
回転を続けるために、熱交換器部分から逆放熱す
ることによる。 Conventionally, this type of heater has generally been equipped with an exhaust fan for the purpose of improving exhaust capacity and thermal efficiency. However, during full-throttle combustion, the amount of combustion air can be maintained constant according to the amount of fuel, and a certain degree of thermal efficiency can be ensured, but when combustion is performed under low load, for example, the efficiency suddenly drops. This is mainly due to the fact that the exhaust fan continues to rotate for a while due to inertia even after combustion has stopped during ON-OFF cycle repetition, and therefore heat is radiated backward from the heat exchanger section.
そこで本考案は燃焼停止と共に排気用フアンに
ブレーキをかけて短時間に回転を停止させ、上記
問題点を回避できるものを提供するにある。 Therefore, the present invention provides a system that can avoid the above-mentioned problems by applying a brake to the exhaust fan to stop its rotation in a short period of time when combustion is stopped.
以下本考案を一実施例に基づいて説明する。 The present invention will be explained below based on one embodiment.
１は瞬間湯沸式暖房器の外装ケーシングで、該
ケーシング１内には温水入口管２、熱交換部３、
感温素子４が取付けられた温水出口管５、熱交換
部３を支持する熱交換器ドラム体６、該ドラム体
６内部に装置されるバーナー部７、該バーナー部
７への燃料の供給制御を行う電磁弁８、熱交換部
３上部に位置する排気フード９、該排気フード９
により収集される排気ガスを排出する排気筒兼排
気フアン１０、該排気フアン１０駆動用電動機１
０′の主軸１１に取付けられた回転検出体１２等
を収納する。 Reference numeral 1 denotes an exterior casing of an instant water heater, and inside the casing 1 there are a hot water inlet pipe 2, a heat exchange section 3,
A hot water outlet pipe 5 to which a temperature sensing element 4 is attached, a heat exchanger drum body 6 that supports the heat exchange section 3, a burner section 7 installed inside the drum body 6, and control of fuel supply to the burner section 7. a solenoid valve 8 that performs this, an exhaust hood 9 located above the heat exchange section 3,
an exhaust pipe/exhaust fan 10 for discharging exhaust gas collected by the exhaust fan 10; an electric motor 1 for driving the exhaust fan 10;
The rotation detecting body 12 attached to the main shaft 11 of 0' is housed therein.
なお、回転検出体１２は前記主軸１１を共に所
定部分を回転させ、その回転に応じた電気信号を
出力し得るものである。 The rotation detection body 12 is capable of rotating a predetermined portion of the main shaft 11 and outputting an electric signal corresponding to the rotation.
通常の運転時、ポンプ〔図示せず〕等により循
環した温水は温水入口管２から流入して温水出口
管５から流出し、放熱器〔図示せず〕等により放
熱するサイクルを繰り返す。当然、外部放熱が少
ない場合には温水の温度は上昇し、これは感温素
子４によつて感知せしめられ、電磁弁８を閉じて
バーナー部７の燃焼を停止させる。 During normal operation, hot water circulated by a pump (not shown) or the like flows in from the hot water inlet pipe 2, flows out from the hot water outlet pipe 5, and radiates heat by a radiator (not shown) or the like, repeating the cycle. Naturally, when there is little external heat radiation, the temperature of the hot water rises, which is sensed by the temperature sensing element 4, and the solenoid valve 8 is closed to stop combustion in the burner section 7.
１３は電源接続口、１４はメインスイツチで運
転時には閉じる。１５は第１の切換手段としての
リレー１６の接点部で、巻線部RLAに通電しない
ときは接点１７側に接続され、巻線部RLAに通電
したときは接点１８に接続されるよう切替わる。
１９はフアン停止回路であり、排気用フアン１０
の駆動用電動機１０′に接続されている。２０は
変圧トランス、２１は整流器、２２は前記回転検
出体１２を含む回転検出回路で、主軸１１が定回
転に達した時の回転検出体１２の信号を受けてリ
レー２３の動作電流を流すものである。２４は第
２の切換手段としての制御回路で、感温素子４に
よる検出温度と設定温度とを比較して検出温度が
設定温度以下の時は巻線部RLAの電源回路を介装
されたスイツチ２５を開き、かつ巻線部RLBと回
転検出回路２２との間のスイツチ２６を閉じ、ま
た検出温度が設定温度以上の時にはスイツチ２５
を閉じてスイツチ２６を開くよう制御する。２８
はリレー２３の接点で、リレー２３の巻線部RLB
が励磁された状態において閉じられて電磁弁８に
通電し、燃料の供給を指示し、かつ放電点火回路
２９が作動する。 13 is a power connection port, and 14 is a main switch, which is closed during operation. 15 is a contact part of a relay 16 as a first switching means, which is connected to the contact 17 side when the winding part RL A is not energized, and is connected to the contact 18 side when the winding part RL A is energized. Switch.
19 is a fan stop circuit, and exhaust fan 10
The drive motor 10' is connected to the drive motor 10'. 20 is a transformer, 21 is a rectifier, and 22 is a rotation detection circuit including the rotation detector 12, which receives a signal from the rotation detector 12 when the main shaft 11 reaches a constant rotation and sends an operating current to the relay 23. It is. 24 is a control circuit as a second switching means, which compares the temperature detected by the temperature sensing element 4 with the set temperature, and when the detected temperature is less than the set temperature, the power supply circuit of the winding part RL A is inserted. The switch 25 is opened, and the switch 26 between the winding section RL B and the rotation detection circuit 22 is closed, and when the detected temperature is higher than the set temperature, the switch 25 is closed.
control to close the switch 26 and open the switch 26. 28
is the contact point of the relay 23, and the winding part RL B of the relay 23
is closed in the excited state, energizing the electromagnetic valve 8, instructing the supply of fuel, and operating the discharge ignition circuit 29.
このように構成したため、メインスイツチ１４
投入して湯温が設定温度以下であれば接点部１５
の接点１７を介して電動機１０′に通電され、排
気フアン１０が回転する。この回転を検知して回
転検出回路２２からスイツチ２６を介してリレー
２３の巻線部RLBに通電され、リレー２３の接点
２８を介して電磁弁８へ通電され燃料供給が開始
されると共に放電点火回路２９が作動して、燃焼
が始じまる。次に湯温が高くなれば制御回路２４
とスイツチ２５，２６とから成る第２の切換手段
により、次のように制御する。先ずスイツチ２６
を開きかつスイツチ２５を閉じて、巻線部RLBへ
の通電がオフされて接点部２８が開となり、電磁
弁８への通電をオフして燃焼を停止し、また巻線
部RLAへの通電開始によつて接点部１５が接点１
８側に切換わり、電動機１０′への通電をオフす
ると共にフアン停止回路１９を作動させて排気フ
アン１０を停止せしめる。よつてON−OFFサイ
クル繰り返し時の燃焼停止時に従来のように熱交
換部３から逆放熱することがなく、低負荷時の熱
効率を改善できる。 With this configuration, the main switch 14
If the water temperature is below the set temperature after pouring the water, the contact part 15
The electric motor 10' is energized through the contact 17, and the exhaust fan 10 rotates. Detecting this rotation, the rotation detecting circuit 22 energizes the winding part RL B of the relay 23 via the switch 26, and energizes the solenoid valve 8 via the contact 28 of the relay 23 to start fuel supply and discharge. The ignition circuit 29 is activated and combustion begins. Next, when the water temperature becomes high, the control circuit 24
A second switching means consisting of switches 25 and 26 performs control as follows. First of all, switch 26
is opened and the switch 25 is closed, the power to the winding part RL B is turned off, the contact part 28 is opened, the power to the solenoid valve 8 is turned off, combustion is stopped, and the power to the winding part RL A is When energization starts, the contact part 15 becomes contact 1.
8 side, the power to the electric motor 10' is turned off, and the fan stop circuit 19 is activated to stop the exhaust fan 10. Therefore, when combustion is stopped during repeated ON-OFF cycles, there is no reverse heat dissipation from the heat exchange section 3 as in the conventional case, and thermal efficiency at low loads can be improved.
以上説明のように本考案によると、バーナへの
燃料の供給停止に連動して排気用フアン装置を駆
動状態から停止状態に切換えて排気用フアンが直
ちに停止するよう構成したため、バーナの燃焼停
止の直後に従来のように排気用フアン装置が慣性
回転して発生する温度が高くない排気流によつて
循環している温水から熱が奪われるといつた熱交
換器での逆放熱を回避でき低負荷時の熱効率を改
善できるものである。 As explained above, according to the present invention, the exhaust fan device is switched from the driving state to the stopped state in conjunction with the stoppage of fuel supply to the burner, and the exhaust fan is immediately stopped. Immediately afterward, the exhaust fan device inertia rotates and heat is removed from the circulating hot water by the low-temperature exhaust flow that occurs in the conventional heat exchanger, which can be avoided. This can improve thermal efficiency under load.
第１図は瞬間湯沸式暖房器の縦断面図、第２図
は本考案の一実施例の構成図である。
３……熱交換部、４……感温素子、７……バー
ナ部、８……電磁弁、１０……排気フアン、１６
……リレー〔第１の切換手段〕、１９……フアン
停止回路、２２……回転検出回路、２４……制御
装置。
FIG. 1 is a longitudinal sectional view of an instant water heater, and FIG. 2 is a configuration diagram of an embodiment of the present invention. 3... Heat exchange section, 4... Temperature sensing element, 7... Burner section, 8... Solenoid valve, 10... Exhaust fan, 16
... Relay [first switching means], 19 ... Fan stop circuit, 22 ... Rotation detection circuit, 24 ... Control device.
Claims (1)
換器とで形成される温水流路中にポンプを介装し
て温水を循環させるよう構成するとともに、燃焼
用バーナの排気ガスを強制排出する排気用フアン
装置と、排気用フアン装置に通電する駆動回路
と、排気用フアン装置に制動を加える停止回路
と、駆動回路と停止回路を選択する第１の切換手
段と、排気用フアン装置の回転速度を検知する回
転検出回路と、目標温度と前記熱交換器の温水流
路出口に取付けられた感温素子による検出温度を
比較し第１の切換手段の切換状態および前記電磁
弁の回転検出回路の出力に基づく開閉を制御する
第２の切換手段とを設け、検出温度が目標温度以
下のときには第２の切換手段によつて第１の切換
手段を駆動回路の側に切換えて排気用フアン装置
を回転させるとともに回転検出回路の出力にした
がつて前記電磁弁を燃料供給状態とし、検出温度
が目標温度に達すると第２の切換手段によつて前
記電磁弁を燃料供給停止状態としかつ第１の切換
手段を停止回路の側に切換えて排気用フアン装置
を停止させるよう構成した瞬間湯沸式暖房器。 A pump is interposed in a hot water flow path formed by a radiator and a heat exchanger heated by a combustion burner to circulate hot water, and exhaust gas from the combustion burner is forcibly discharged. an exhaust fan device, a drive circuit that energizes the exhaust fan device, a stop circuit that applies braking to the exhaust fan device, a first switching means that selects between the drive circuit and the stop circuit, and rotation of the exhaust fan device. A rotation detection circuit that detects the speed and a rotation detection circuit that compares the target temperature with the temperature detected by the temperature sensing element attached to the hot water flow path outlet of the heat exchanger to determine the switching state of the first switching means and the rotation detection circuit of the solenoid valve. and a second switching means for controlling opening/closing based on the output of the exhaust fan device, and when the detected temperature is below the target temperature, the second switching means switches the first switching means to the drive circuit side. and the solenoid valve is brought into a fuel supply state according to the output of the rotation detection circuit, and when the detected temperature reaches the target temperature, the second switching means brings the solenoid valve into a fuel supply stop state and the first solenoid valve is brought into a fuel supply state. An instant water heater configured to switch the switching means to the stop circuit side to stop the exhaust fan device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980102564U JPS6330033Y2 (en) | 1980-07-18 | 1980-07-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980102564U JPS6330033Y2 (en) | 1980-07-18 | 1980-07-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5725956U JPS5725956U (en) | 1982-02-10 |
| JPS6330033Y2 true JPS6330033Y2 (en) | 1988-08-11 |
Family
ID=29463986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980102564U Expired JPS6330033Y2 (en) | 1980-07-18 | 1980-07-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6330033Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60117024A (en) * | 1983-11-28 | 1985-06-24 | Matsushita Electric Ind Co Ltd | Cooling device for apparatus for sensing a number of rotation of combustion machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56102643A (en) * | 1980-01-18 | 1981-08-17 | Osaka Gas Co Ltd | Gas-fired water heater |
-
1980
- 1980-07-18 JP JP1980102564U patent/JPS6330033Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56102643A (en) * | 1980-01-18 | 1981-08-17 | Osaka Gas Co Ltd | Gas-fired water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5725956U (en) | 1982-02-10 |
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