JPH074647A - Hot water supplying apparatus - Google Patents

Hot water supplying apparatus

Info

Publication number
JPH074647A
JPH074647A JP16608193A JP16608193A JPH074647A JP H074647 A JPH074647 A JP H074647A JP 16608193 A JP16608193 A JP 16608193A JP 16608193 A JP16608193 A JP 16608193A JP H074647 A JPH074647 A JP H074647A
Authority
JP
Japan
Prior art keywords
hot water
temperature
blower
post
combustion
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.)
Pending
Application number
JP16608193A
Other languages
Japanese (ja)
Inventor
Yasuo Sasaki
康男 佐々木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noritz Corp
Original Assignee
Noritz Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Noritz Corp filed Critical Noritz Corp
Priority to JP16608193A priority Critical patent/JPH074647A/en
Publication of JPH074647A publication Critical patent/JPH074647A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To perform energy conservation due to saving of electric rate by effectively eliminating adverse influence of delayed water temperature rise due to residual heat after combustion is extinguished and preventing prolonging of noise due to a postpurging operation. CONSTITUTION:A hot water supplying apparatus comprises a heat exchanging boiler 10 having a heat exchanging coil 42 for heating water fed from a water input tube 41 to feed it to a hot water output tube 43, a burner 20 for diffusing combustion flame into the boiler 10, a blower 30 in such a manner that a postpurging operation for feeding, after the combustion is extinguished, only the air by the blower 30 into the burner 20 and the boiler 10 is conducted, and an output hot water temperature sensor 43a provided in the tube 43, thereby continuing the postpurging of the blower 30 until a temperature of the predetermined temperature or less of the sensor 43 is detected. Simultaneously, if the temperature detected by the sensor 43 thereafter exceeds, the postpurging operation once stopped is restarted during the period.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、石油燃焼器等の燃焼器
を備えた給湯装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply device equipped with a combustor such as an oil combustor.

【0002】[0002]

【従来の技術】従来、石油給湯装置等の給湯装置におい
ては、燃焼の消火後、熱交換缶体やバーナの冷却、排気
ガスの一新を図るため、送風機による空気の送風を行う
ポストパージ運転がなされている。そして前記ポストパ
ージ運転においては、バーナや熱交換缶体に発生する消
火後の残留熱による悪影響、例えば後沸きによる温度上
昇、がポストパージ運転後にはもはや発生し得ないよう
にするため、消火前における燃焼の時間の長短等による
加熱状態の変動等に関わらず、一番条件の悪いと思われ
る状況に対応したかたちで、前記ポストパージの時間
を、一定の長時間、例えば3分として、一律に長くして
いた。
2. Description of the Related Art Conventionally, in a hot water supply apparatus such as an oil hot water supply apparatus, a post-purge operation in which air is blown by a blower in order to cool a heat exchange can and a burner and to renew exhaust gas after extinguishing combustion. Has been done. In the post-purging operation, before the extinguishing in order to prevent the adverse effect of the residual heat after extinguishing that occurs in the burner or the heat exchange can body, for example, the temperature rise due to post-boiling, from occurring anymore after the post-purging operation. The post-purge time is uniformly set to a constant long time, for example, 3 minutes in a manner that corresponds to the situation in which the conditions are considered to be the worst, regardless of changes in the heating state due to the length of the combustion time, etc. Had been long.

【0003】[0003]

【発明が解決しようとする課題】ところが、上記のよう
に従来の給湯装置においては、ポストパージの時間を一
律に長時間としていたため、例えば短時間の燃焼後にお
いては、既に充分に冷却がなされているのにも関わら
ず、さらに一定時間は送風機が回り続け、それだけ運転
時間が長くなる欠点、電気代が上昇する欠点、送風機に
よる騒音が長く続く欠点があった。
However, in the conventional hot water supply apparatus as described above, the post-purge time is uniformly long, and therefore, after the combustion for a short time, the cooling is already sufficiently performed. However, the blower continues to rotate for a certain period of time, and the operating time becomes longer, the electricity bill rises, and the noise from the blower lasts longer.

【0004】そこで本発明は上記従来の給湯装置の欠点
を解消し、燃焼の消火後における残留熱による後沸き等
の悪影響を確実に無くすと共にポストパージ運転での騒
音が長引くのを防止し、電気代の節約による省エネを図
ることができる給湯装置の提供を目的とする。
Therefore, the present invention solves the above-mentioned drawbacks of the conventional hot water supply apparatus, reliably eliminates adverse effects such as post-boiling due to residual heat after combustion extinguishing, and prevents prolonged noise during post-purge operation. It is an object of the present invention to provide a hot water supply device that can save energy by saving money.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するた
め、本発明の給湯装置は、入水管から送られてくる水を
加熱して出湯管に送り出す熱交換コイルを備えた熱交換
缶体と、該熱交換缶体内に対して燃焼炎を吹き出すため
のバーナと、該バーナに燃焼用の空気を供給する送風機
とを有し、燃焼の消火後には前記送風機によって空気の
みを前記バーナ及び熱交換缶体内に送風するポストパー
ジ運転を行うようにした給湯装置であって、前記出湯管
に出湯温度センサを設け、前記送風機によるポストパー
ジ運転を、前記出湯温度センサが予め定めた一定温度以
下の温度を検出するまで継続すると共にその後において
も出湯温度センサが検出する温度が前記一定温度を越え
た場合には、その間、前記一旦停止したポストパージ運
転を再運転するよう構成したことを特徴としている。
In order to achieve the above object, the hot water supply apparatus of the present invention comprises a heat exchange can body having a heat exchange coil for heating water sent from a water inlet pipe and sending it to a hot water outlet pipe. A burner for blowing a combustion flame into the heat exchange can body, and a blower for supplying combustion air to the burner, and after the combustion is extinguished, only air is blown by the blower and heat exchange A hot water supply device configured to perform a post-purge operation for blowing air into a can, wherein a hot water outlet temperature sensor is provided in the hot water outlet pipe, and the post purge operation by the blower is performed at a temperature below a predetermined temperature determined by the hot water temperature sensor. If the temperature detected by the hot water temperature sensor exceeds the constant temperature after that, the post-purge operation that was once stopped is restarted during that time. Is characterized in that form was.

【0006】[0006]

【作用】上記本発明の特徴によれば、燃焼の消火後、送
風機によるポストパージ運転が開始されると、出湯温度
センサによって熱交換缶体からの出湯水の温度が検出さ
れ、その温度が予め定めた一定温度以下に下がった時点
で、送風機による送風が停止される。そして前記出湯温
度センサによる温度監視は引き続き続けられ、ポストパ
ージ運転が一旦終了された後においても、出湯温度セン
サの検出する温度が前記一定温度を越えた場合には、ポ
ストパージ運転が再開され、その間、ポストパージが再
運転される。前記一定温度は、それ以下の温度では後沸
きによる影響が少なく、また後沸きを起こすような残留
熱の影響が少ないという温度を予め実験等によって得
て、決定しておくことができる。本発明の特徴によれ
ば、必要以上のポストパージ運転が無駄になされること
がなくなり、騒音発生の減少、省電力化が図られ、同時
に燃焼の消火後における残留熱による後沸き等の悪影響
を確実に無くすことができる。
According to the features of the present invention, when the post-purge operation by the blower is started after the combustion is extinguished, the temperature of the hot water discharged from the heat exchange can is detected by the hot water temperature sensor, and the temperature is previously set. When the temperature falls below the predetermined temperature, the air blow by the blower is stopped. Then, the temperature monitoring by the hot water temperature sensor is continuously continued, and even after the post-purge operation is once ended, if the temperature detected by the hot water temperature sensor exceeds the constant temperature, the post-purge operation is restarted, Meanwhile, the post-purge is restarted. The constant temperature can be determined in advance by experiments or the like at a temperature below which the effect of post-boiling is small and the effect of residual heat causing post-boiling is small. According to the features of the present invention, unnecessary post-purge operation is not wasted, noise generation is reduced, power saving is achieved, and at the same time, adverse effects such as post-boiling due to residual heat after extinction of combustion are prevented. It can be surely lost.

【0007】[0007]

【実施例】以下に本発明を図面に基づいて説明する。図
1は本発明の実施例を示す石油給湯装置の全体構成図、
図2はポストパージ運転時の各部材の運転のタイムチャ
ートである。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of an oil water heater showing an embodiment of the present invention,
FIG. 2 is a time chart of the operation of each member during the post-purge operation.

【0008】10は熱交換缶体、20はバーナ、30は送風機
である。熱交換缶体10内へはバーナ20から燃焼炎が吹き
込まれ、それによって熱交換缶体10が加熱される。熱交
換缶体10内に発生した排気ガスは上部の図示しない排気
口から外部に排出される。この排気ガスの排出口から外
部の風等が逆風として熱交換缶体10内へ入り込んだりす
る。給湯は、入水管41を送られてきた水が熱交換缶体10
を巻回し、或いは貫通する熱交換コイル42を通る間に加
熱され、出湯管43に出湯され、更にバイパス44からの水
と混水調節器45によって適当に混水されて給湯管46に流
れることで行われる。前記入水管41には入水温度センサ
41a 、水量センサ41b が設けられ、前記出湯管43には出
湯温度センサ43a が設けられ、前記給湯管46には給湯温
度センサ46aが設けられている。
Reference numeral 10 is a heat exchange can, 20 is a burner, and 30 is a blower. Combustion flames are blown into the heat exchange can body 10 from the burner 20, whereby the heat exchange can body 10 is heated. Exhaust gas generated in the heat exchange can body 10 is exhausted to the outside through an exhaust port (not shown) in the upper part. External wind or the like enters the heat exchange can body 10 through the exhaust gas outlet as backwind. For hot water supply, the water sent through the water inlet pipe 41 is the heat exchange can body 10.
It is heated while passing through the heat exchange coil 42 that winds or passes through, and is discharged to the hot water supply pipe 43, and is further appropriately mixed with water from the bypass 44 by the water mixing controller 45 and flows to the hot water supply pipe 46. Done in. The water inlet pipe 41 has a water temperature sensor.
41a and a water amount sensor 41b are provided, the hot water outlet pipe 43 is provided with a hot water outlet temperature sensor 43a, and the hot water supply pipe 46 is provided with a hot water supply temperature sensor 46a.

【0009】前記バーナ20は、前記熱交換缶体10内へ臨
む図示しない燃焼筒と、その手前に隣接して設けられる
隣接室と、該隣接室及び前記燃焼筒の側周を囲む空気筒
とを有し、前記隣接室には、石油燃料噴出ノズルと、点
火用電極棒と、CdSからなる炎検出器と、該炎検出器
の近傍に設けられる雰囲気温度センサ等を有している。
前記石油燃料噴出ノズルから噴出される石油燃料は、噴
霧状態となって燃焼筒内に導入される。また前記送風機
30から送風された空気は、空気筒からその一部は隣接室
内に入った後、燃焼筒内に導入され、残りは空気筒から
直接的に燃焼筒に導入される。そして燃焼筒内で導入さ
れた燃料と空気とが燃焼され、燃焼炎として熱交換缶体
10内へ吹き出される。
The burner 20 includes a combustion cylinder (not shown) facing the inside of the heat exchange can body 10, an adjacent chamber provided adjacent to the combustion cylinder, and an air cylinder surrounding the adjacent chamber and the side periphery of the combustion cylinder. The adjacent chamber has a petroleum fuel ejection nozzle, an ignition electrode rod, a flame detector made of CdS, an ambient temperature sensor provided in the vicinity of the flame detector, and the like.
The petroleum fuel ejected from the petroleum fuel ejection nozzle is atomized and introduced into the combustion cylinder. Also the blower
A part of the air blown from the air cylinder is introduced into the combustion cylinder after entering a portion from the air cylinder, and the rest is directly introduced from the air cylinder to the combustion cylinder. Then, the fuel and air introduced in the combustion cylinder are combusted, and as a combustion flame, the heat exchange can body
It is blown out into 10.

【0010】これらの各部材は、コントローラ50によっ
て制御される。即ちコントローラ50は、図示しないリモ
コン等からの運転に関する指令を受け、また装置の各セ
ンサからの情報を入力し、これに基づいて装置各部に対
して所定の動作指令を出す。図2も参照して、コントロ
ーラ50による給湯運転の制御機構を説明すると、今、給
湯運転のための元スイッチがオンしている状態におい
て、給湯管46の図示しない給湯カランが開放されると、
コントローラ50は、水量センサ41b が一定流量以上の水
量を検出することをまって、送風機30に対して駆動オン
指令を出し、一定時間のプリパージを行った後、点火用
電極棒のスパークオン指令を出し、石油燃料噴出ノズル
による燃料噴出の開始指令を出し(図示しない燃料供給
ポンプをオンする)、これによって燃焼をオンする。
Each of these members is controlled by the controller 50. That is, the controller 50 receives an operation command from a remote controller (not shown), inputs information from each sensor of the device, and outputs a predetermined operation command to each part of the device based on the information. Referring also to FIG. 2, the control mechanism of the hot water supply operation by the controller 50 will be described. When the hot water supply pipe of the hot water supply pipe 46 (not shown) is opened while the original switch for the hot water supply operation is turned on,
The controller 50 detects that the water amount sensor 41b detects a water amount equal to or higher than a certain flow rate, issues a drive-on command to the blower 30, performs pre-purge for a certain period of time, and then issues a spark-on command for the ignition electrode rod. Then, a command to start fuel injection from the petroleum fuel injection nozzle is issued (fuel supply pump (not shown) is turned on), and combustion is turned on.

【0011】一方、燃焼運転中において、前記給湯管46
の図示しない給湯カランが閉止されると、コントローラ
50は、水量センサ41b が一定流量未満の水量を検出する
ことで、先ず石油燃料噴出ノズルによる燃料噴出の停止
指令を出し(燃料供給ポンプに対してオフ指令を出
し)、これによって燃焼だけをオフにする。一方、送風
機30は引き続きオン状態にして、ポストパージ運転に入
る。そしてコントローラ50は出湯温度センサ43a からの
温度情報を監視し、該温度が一定温度T1 以下に下がっ
た時点で送風機30に対して駆動オフ指令を出して、ポス
トパージ運転を終了する。コントローラ50はその後も出
湯温度センサ43a からの温度情報を監視し、温度が前記
一定温度T1 を再び越えた場合、例えば、前記温度T1
に一定のヒステリシスを考慮した温度T2 になった場合
には、送風機30に対して再び駆動オン指令を出して、そ
の間、ポストパージ運転を再度行う。
On the other hand, during the combustion operation, the hot water supply pipe 46
When the hot water supply run (not shown) is closed, the controller
When the water amount sensor 41b detects a water amount less than a certain flow rate, the 50 first issues a command to stop the fuel injection from the petroleum fuel injection nozzle (issues an OFF command to the fuel supply pump), thereby turning off only the combustion. To On the other hand, the blower 30 is continuously turned on and the post purge operation is started. Then, the controller 50 monitors the temperature information from the hot water temperature sensor 43a, issues a drive off command to the blower 30 when the temperature falls below the constant temperature T 1 , and ends the post-purge operation. The controller 50 continues to monitor the temperature information from the tap water temperature sensor 43a, and when the temperature again exceeds the constant temperature T 1 , for example, the temperature T 1
When the temperature T 2 in consideration of a certain hysteresis is reached, the drive-on command is again issued to the blower 30, and the post-purge operation is performed again during that time.

【0012】前記一定温度は、それ以下の温度では後沸
きによる影響が少なく、また後沸きを起こすような残留
熱の影響が少ないという温度を予め実験等によって得
て、決定しておくことができる。以上の様なポストパー
ジ運転の制御機構により、燃焼消火後のポストパージ運
転は、燃焼の消火後における残留熱による後沸き等の悪
影響が無くなった時点で確実に停止することができるの
で、必要最小限の時間に抑えることができる。また一旦
ポストパージ運転を停止した後に、何らかの原因で後沸
きが再び生じる様な場合には、再度ポストパージ運転が
開始されるので、残留熱による悪影響が及ぼされるのが
確実に防止される。
The constant temperature can be determined in advance by experiments or the like at a temperature below which the influence of post-boiling is small and the influence of residual heat that causes post-boiling is small. . With the above-mentioned control mechanism for post-purge operation, post-purge operation after combustion extinguishing can be reliably stopped when the adverse effects such as post-boiling due to residual heat after combustion extinguishing have disappeared. It can be held for a limited time. In addition, after the post-purge operation is once stopped, if post-boiling occurs again for some reason, the post-purge operation is restarted, so that the adverse effect of residual heat is reliably prevented.

【0013】[0013]

【発明の効果】本発明は以上の構成よりなり、請求項1
に記載の給湯装置によれば、出湯管に出湯温度センサを
設け、送風機によるポストパージ運転を、前記出湯温度
センサが予め定めた一定温度以下の温度を検出するまで
継続すると共にその後においても出湯温度センサが検出
する温度が前記一定温度を越えた場合には、その間、前
記一旦停止したポストパージ運転を再運転するよう構成
したので、燃焼の消火後における残留熱による後沸き等
の悪影響をポストパージによって取り除くことができる
共にポストパージ運転での騒音が長引くのを防止するこ
とができ、且つ電気代の節約による省エネを図ることが
できる。
According to the present invention, which has the above-described structure,
According to the hot water supply apparatus described in (1), the hot water outlet temperature sensor is provided in the hot water outlet pipe, and the post-purge operation by the blower is continued until the hot water outlet temperature sensor detects a temperature equal to or lower than a predetermined constant temperature, and thereafter, the hot water outlet temperature. When the temperature detected by the sensor exceeds the certain temperature, the post-purge operation that was once stopped is restarted during that time.Therefore, adverse effects such as post-boiling due to residual heat after extinguishing combustion are eliminated by post-purging. It is possible to prevent the noise from being prolonged in the post-purge operation, and it is possible to save energy by saving the electricity bill.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例を示す石油給湯装置の全体構成
図である。
FIG. 1 is an overall configuration diagram of an oil hot water supply apparatus showing an embodiment of the present invention.

【図2】ポストパージ運転時の各部材の運転のタイムチ
ャートである。
FIG. 2 is a time chart of the operation of each member during the post-purge operation.

【符号の説明】[Explanation of symbols]

10 熱交換缶体 20 バーナ 30 送風機 41 入水管 42 熱交換コイル 43 出湯管 43a 出湯温度センサ 50 コントローラ 10 Heat exchange canister 20 Burner 30 Blower 41 Water inlet pipe 42 Heat exchange coil 43 Hot water pipe 43a Hot water temperature sensor 50 Controller

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 入水管から送られてくる水を加熱して出
湯管に送り出す熱交換コイルを備えた熱交換缶体と、該
熱交換缶体内に対して燃焼炎を吹き出すためのバーナ
と、該バーナに燃焼用の空気を供給する送風機とを有
し、燃焼の消火後には前記送風機によって空気のみを前
記バーナ及び熱交換缶体内に送風するポストパージ運転
を行うようにした給湯装置であって、前記出湯管に出湯
温度センサを設け、前記送風機によるポストパージ運転
を、前記出湯温度センサが予め定めた一定温度以下の温
度を検出するまで継続すると共にその後においても出湯
温度センサが検出する温度が前記一定温度を越えた場合
には、その間、前記一旦停止したポストパージ運転を再
運転するよう構成したことを特徴とする給湯装置。
1. A heat exchange can body having a heat exchange coil for heating water sent from a water inlet pipe and sending it to a hot water outlet pipe, and a burner for blowing a combustion flame into the heat exchange can body. A hot water supply apparatus having a blower for supplying combustion air to the burner, and performing a post-purge operation of blowing only air into the burner and the heat exchange can body by the blower after extinguishing the combustion. , A hot water outlet temperature sensor is provided in the hot water outlet pipe, and the post-purge operation by the blower is continued until the hot water outlet temperature sensor detects a temperature equal to or lower than a predetermined constant temperature, and thereafter the temperature detected by the hot water outlet temperature sensor is When the temperature exceeds the certain temperature, the post-purge operation that has been temporarily stopped is restarted during that time.
JP16608193A 1993-06-11 1993-06-11 Hot water supplying apparatus Pending JPH074647A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16608193A JPH074647A (en) 1993-06-11 1993-06-11 Hot water supplying apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16608193A JPH074647A (en) 1993-06-11 1993-06-11 Hot water supplying apparatus

Publications (1)

Publication Number Publication Date
JPH074647A true JPH074647A (en) 1995-01-10

Family

ID=15824633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16608193A Pending JPH074647A (en) 1993-06-11 1993-06-11 Hot water supplying apparatus

Country Status (1)

Country Link
JP (1) JPH074647A (en)

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