JPH0148470B2 - - Google Patents
Info
- Publication number
- JPH0148470B2 JPH0148470B2 JP12462783A JP12462783A JPH0148470B2 JP H0148470 B2 JPH0148470 B2 JP H0148470B2 JP 12462783 A JP12462783 A JP 12462783A JP 12462783 A JP12462783 A JP 12462783A JP H0148470 B2 JPH0148470 B2 JP H0148470B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- hot water
- heat recovery
- exhaust
- exhaust heat
- 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 39
- 238000011084 recovery Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 description 23
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D12/00—Other central heating systems
- F24D12/02—Other central heating systems having more than one heat source
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
【発明の詳細な説明】
本発明は、ボイラなどの高温排ガス源から排出
される高温排ガスの排熱を温水に回収する装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for recovering waste heat of high-temperature exhaust gas discharged from a high-temperature exhaust gas source such as a boiler into hot water.
この種の排熱回収装置においては、温水負荷に
対して熱交換器の能力を調節するのに、流入する
排ガスの量をダンパにより制御して調節を行なつ
ているが、ダンパは締切り性能が悪く、全閉時に
おいても洩れがある。従つてダンパが全閉状態で
も温水が加熱され、温水負荷量が少ないと、温水
温度が上昇し、温水系の圧力が異常に上昇し危険
を伴なう。また、排ガス中にはすすその他の微小
な固形物、酸を含んだミストなどが含まれている
ので、締切性のよいスルースバルブ、ボールバル
ブなどは不適当である。 In this type of waste heat recovery equipment, the capacity of the heat exchanger is adjusted to the hot water load by controlling the amount of inflowing exhaust gas using a damper, but the damper has limited shutoff performance. Unfortunately, it leaks even when fully closed. Therefore, the hot water is heated even when the damper is fully closed, and if the hot water load is small, the hot water temperature rises and the pressure in the hot water system increases abnormally, which is dangerous. Furthermore, since the exhaust gas contains soot, other minute solids, acid-containing mist, etc., sluice valves, ball valves, etc. with good shutoff performance are unsuitable.
本発明は、従来のものの上記の欠点を除き、排
ガス量調節にダンパを用い、締切り時に温水負荷
が減少した場合でも温水の過熱を防ぐことができ
る、安全な排熱回収装置を提供することを目的と
する。 The present invention aims to eliminate the above-mentioned drawbacks of the conventional device and provide a safe waste heat recovery device that uses a damper to adjust the amount of exhaust gas and can prevent hot water from overheating even when the hot water load decreases at the time of shutoff. purpose.
本発明は、高温排ガス源から高温排ガスを導
き、温水経路の温水と熱交換せしめて排ガスの排
熱を回収する排熱回収部と、該排熱回収部に流入
する排ガスの流量を調節する流入量調節機構と、
前記排熱回収部をバイパスする排ガスのバイパス
量を調節するバイパス量調節機構と、前記排熱回
収部の排ガス側に空気を供給する空気供給機構
と、該空気の供給量を調節する空気量調節機構と
を備え、温水温度を検出し、前記流入量調節機構
及び前記空気量調節機構を操作し、温水温度を所
定の範囲に保つ温水温度制御機構を備えたことを
特徴とする排熱回収装置である。 The present invention provides an exhaust heat recovery section that guides high-temperature exhaust gas from a high-temperature exhaust gas source, exchanges heat with hot water in a hot water path, and recovers the exhaust heat of the exhaust gas, and an inflow that adjusts the flow rate of the exhaust gas flowing into the exhaust heat recovery section. Amount adjustment mechanism;
a bypass amount adjustment mechanism that adjusts a bypass amount of exhaust gas that bypasses the exhaust heat recovery section; an air supply mechanism that supplies air to the exhaust gas side of the exhaust heat recovery section; and an air amount adjustment mechanism that adjusts the amount of air supplied. An exhaust heat recovery device comprising: a hot water temperature control mechanism that detects hot water temperature, operates the inflow rate adjustment mechanism and the air amount adjustment mechanism, and maintains the hot water temperature within a predetermined range. It is.
本発明を実施例につき図面を用いて説明する。 The present invention will be explained with reference to the drawings based on examples.
１はボイラの炉筒、２は煙管、３は煙室であ
り、燃焼排ガスは配管４，５を経て排ガスの排熱
を回収する排熱回収部としての熱交換器６に導か
れ、配管７，８を経て次工程に導かれる。配管５
には、熱交換器６に流入する排ガスの流量を調節
する流入量調節機構としてダンパ９が備えられ、
配管７には開閉機構としてダンパ１０が設けられ
ている。 Reference numeral 1 designates a furnace cylinder of the boiler, 2 a smoke pipe, and 3 a smoke chamber. Combustion exhaust gas is guided through pipes 4 and 5 to a heat exchanger 6 as an exhaust heat recovery unit that recovers exhaust heat from the exhaust gas, and then to a pipe 7. , 8 to lead to the next process. Piping 5
is equipped with a damper 9 as an inflow rate adjustment mechanism for adjusting the flow rate of exhaust gas flowing into the heat exchanger 6,
A damper 10 is provided in the pipe 7 as an opening/closing mechanism.
ダンパ９の上流側から、熱交換器６をバイパス
するバイパス管１１が分岐しており、排ガスのバ
イパス量を調節するバイパス量調節機構としてダ
ンパ１２が設けられている。 A bypass pipe 11 that bypasses the heat exchanger 6 branches from the upstream side of the damper 9, and a damper 12 is provided as a bypass amount adjustment mechanism that adjusts the amount of bypass of exhaust gas.
１３はバーナ、１４は燃焼制御弁、１５はバー
ナ燃焼用のフアンである。フアン１５の吐出側か
ら、空気供給管１６を経て空気が、熱交換器６の
排ガス側に供給されるようになつている。空気供
給管１６には、空気供給量を調節する空気量調節
機構として流量制御弁１７が設けられている。 13 is a burner, 14 is a combustion control valve, and 15 is a burner combustion fan. Air is supplied from the discharge side of the fan 15 to the exhaust gas side of the heat exchanger 6 via an air supply pipe 16. The air supply pipe 16 is provided with a flow rate control valve 17 as an air amount adjustment mechanism for adjusting the amount of air supplied.
１８，１９，２０は温水管であり、負荷２１に
接続している。熱交換器６において温水管１９を
介して排ガスから排熱を回収し、高温の温水を製
造する。 18, 19, and 20 are hot water pipes connected to a load 21. In the heat exchanger 6, exhaust heat is recovered from the exhaust gas through the hot water pipe 19 to produce high-temperature hot water.
２２は温水出口温度を検出する温度検出器、２
３は、その信号を受け、信号に応じてダンパ９，
１２の開度、或いは流量制御弁１７の開度を操作
して温水温度を所定の範囲に保つようにした温水
温度制御装置である。 22 is a temperature detector for detecting hot water outlet temperature;
3 receives the signal and operates the dampers 9, 9 in accordance with the signal.
This hot water temperature control device maintains the hot water temperature within a predetermined range by manipulating the opening degree of the valve 12 or the opening degree of the flow rate control valve 17.
運転に当たつては、通常は、ダンパ１０は全
開、流量制御弁１７は全閉とし、ダンパ９及び１
２を操作して熱交換器６への排ガス流入量を調節
して温水温度を制御する。ダンパ９と１２とは一
方が全開のとき、他方が全閉となるような関係で
開度が操作される。 During operation, normally the damper 10 is fully open, the flow control valve 17 is fully closed, and the dampers 9 and 1 are fully closed.
2 to adjust the amount of exhaust gas flowing into the heat exchanger 6 to control the hot water temperature. The opening degrees of the dampers 9 and 12 are controlled such that when one is fully open, the other is fully closed.
負荷が減少し、これに応じダンパ９を全閉とし
たときでも前述の如く排ガスが僅か洩れる。その
ために温水出口温度は上昇するが、或る許容量を
越えたら流量制御弁１７を適宜の開度に開き、フ
アン１５の吐出側から空気を導き熱交換器６の排
ガス側に供給する。これにより熱交換器６内の排
ガスの温度は下降し、温水の過熱を防ぐことがで
きる。 Even when the load decreases and the damper 9 is fully closed accordingly, a small amount of exhaust gas leaks as described above. Therefore, the hot water outlet temperature increases, but when it exceeds a certain allowable amount, the flow rate control valve 17 is opened to an appropriate opening degree, and air is guided from the discharge side of the fan 15 and supplied to the exhaust gas side of the heat exchanger 6. As a result, the temperature of the exhaust gas in the heat exchanger 6 decreases, and overheating of the hot water can be prevented.
供給空気量は温水温度に比例的に変化せしめて
もよく、オン・オフ制御を行なつてもよい。この
実施例では空気源はバーナ用のフアン１５を兼用
したが、他の空気源を用いてもよい。 The amount of air supplied may be changed in proportion to the hot water temperature, or may be controlled on and off. In this embodiment, the burner fan 15 is also used as the air source, but other air sources may be used.
空気を供給するときには、ダンパ１０の開度を
小さくしておくことが望ましい。これにより、熱
交換器６内の内圧が上がり、ダンパ９の漏れ込み
が減るので加熱量も減り、空気の供給量は少なく
て済む。フアン１５の容量の余裕或いは省エネル
ギの要求度に応じてダンパ１０の要、不要が選択
される。 When supplying air, it is desirable to keep the opening degree of the damper 10 small. This increases the internal pressure within the heat exchanger 6 and reduces leakage from the damper 9, reducing the amount of heating and requiring less air supply. Whether the damper 10 is necessary or not is selected depending on the capacity margin of the fan 15 or the degree of energy saving required.
ダンパ１０を全閉すれば、ダンパ９が既に全閉
となつていることにより、熱交換器６の中はダン
パ９からの漏れ込みをなくす程度に高圧にするこ
とができる。ダンパ９を全閉とした後温水温度が
上がつたらダンパ１０を適宜開いて空気を流して
冷却し、温水温度が所定の範囲内に入つたら、ダ
ンパ１０も全閉してダンパ９からの漏れを阻止す
るようにすれば供給空気量は極めて僅かで済む。 When the damper 10 is fully closed, the pressure inside the heat exchanger 6 can be made high enough to eliminate leakage from the damper 9 because the damper 9 is already fully closed. After the damper 9 is fully closed, when the hot water temperature rises, the damper 10 is opened appropriately to let air flow to cool it down, and when the hot water temperature is within a predetermined range, the damper 10 is also fully closed and the damper 9 is cooled. If leakage is prevented, the amount of air supplied can be extremely small.
温水温度がさらに上昇し限界値に達したときに
は、ボイラの燃焼を停止するようにしてもよい。 When the hot water temperature further increases and reaches a limit value, combustion in the boiler may be stopped.
ダンパ１０の動作はダンパ９と連動させ、全
開、全閉のタイミングを同一としてもよい。 The operation of the damper 10 may be linked with the damper 9, and the timing of fully opening and closing may be the same.
排ガス発生源としてはボイラのほか吸収式冷凍
機、吸収式冷温水機の直火式発生器などが利用さ
れる。 In addition to boilers, exhaust gas generation sources include absorption chillers and direct-fired generators of absorption chiller-heaters.
本発明により、排ガス量調節にダンパを用い、
構造が簡単であり、固形物などに対しても支障が
少ない構造でありながら、締切時に負荷が少なく
なつても温水の過熱を生ずることのない安全な排
熱回収装置を提供することができ、実用上、安全
上極めて大なる効果を奏することができる。 According to the present invention, a damper is used to adjust the amount of exhaust gas,
It is possible to provide a safe waste heat recovery device that has a simple structure and has a structure that does not interfere with solid materials, etc., and does not cause overheating of hot water even when the load is reduced at the time of closing. It can have an extremely large effect in terms of practical use and safety.
図面は本発明の実施例のフロー図である。
１……炉筒、２……煙管、３……煙室、４，５
……配管、６……熱交換器、７，８……配管、
９，１０……ダンパ、１１……バイパス管、１２
……ダンパ、１３……バーナ、１４……燃料制御
弁、１５……フアン、１６……空気供給管、１７
……流量制御弁、１８，１９，２０……温水管、
２１……負荷、２２……温度検出器、２３……温
水温度制御装置。
The drawing is a flow diagram of an embodiment of the invention. 1...Furnace tube, 2...Smoke pipe, 3...Smoke chamber, 4,5
...Piping, 6...Heat exchanger, 7,8...Piping,
9, 10...damper, 11...bypass pipe, 12
... Damper, 13 ... Burner, 14 ... Fuel control valve, 15 ... Fan, 16 ... Air supply pipe, 17
...Flow control valve, 18,19,20...Hot water pipe,
21...Load, 22...Temperature detector, 23...Hot water temperature control device.
Claims (1)
路の温水と熱交換せしめて排ガスの排熱を回収す
る排熱回収部と、 該排熱回収部に流入する排ガスの流量を調節す
る流入量調節機構と、 前記排熱回収部をバイパスする排ガスのバイパ
ス量を調節するバイパス量調節機構と、 前記排熱回収部の排ガス側に空気を供給する空
気供給機構と、該空気の供給量を調節する空気量
調節機構とを備え、 温水温度を検出し、前記流入量調節機構及び前
記空気量調節機構を操作し、温水温度を所定の範
囲に保つ温水温度制御機構を備えた ことを特徴とする排熱回収装置。 ２ 高温排ガス源から高温排ガスを導き、温水経
路の温水と熱交換せしめて排ガスの排熱を回収す
る排熱回収部と、該排熱回収部に流入する排ガス
の流量を調節する流入量調節機構と、前記排熱回
収部をバイパスする排ガスのバイパス量を調節す
るバイパス量調節機構と、前記排熱回収部の排ガ
ス側に空気を供給する空気供給機構と、該空気の
供給量を調節する空気量調節機構とを備え、温水
温度を検出し、前記流入量調節機構及び前記空気
量調節機構を操作し、温水温度を所定の範囲に保
つ温水温度制御機構を備え、前記排熱回収部から
の排ガス出口経路に開閉機構を備えたことを特徴
とする排熱回収装置。[Claims] 1. An exhaust heat recovery unit that guides high-temperature exhaust gas from a high-temperature exhaust gas source, exchanges heat with hot water in a hot water path, and recovers exhaust heat from the exhaust gas; and a flow rate of the exhaust gas flowing into the exhaust heat recovery unit. an inflow amount adjustment mechanism that adjusts the amount of exhaust gas that bypasses the exhaust heat recovery section; an air supply mechanism that supplies air to the exhaust gas side of the exhaust heat recovery section; an air volume adjustment mechanism that adjusts the supply amount, and a hot water temperature control mechanism that detects hot water temperature, operates the inflow volume adjustment mechanism and the air volume adjustment mechanism, and maintains the hot water temperature within a predetermined range. An exhaust heat recovery device featuring: 2. An exhaust heat recovery unit that guides high-temperature exhaust gas from a high-temperature exhaust gas source, exchanges heat with hot water in the hot water path, and recovers the exhaust heat of the exhaust gas, and an inflow rate adjustment mechanism that adjusts the flow rate of the exhaust gas flowing into the exhaust heat recovery unit. a bypass amount adjustment mechanism that adjusts a bypass amount of exhaust gas that bypasses the exhaust heat recovery section; an air supply mechanism that supplies air to the exhaust gas side of the exhaust heat recovery section; and an air supply mechanism that adjusts the amount of air supplied. a hot water temperature control mechanism that detects hot water temperature, operates the inflow rate adjusting mechanism and the air rate adjusting mechanism, and maintains the hot water temperature within a predetermined range; An exhaust heat recovery device characterized by having an opening/closing mechanism in the exhaust gas outlet path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58124627A JPS6017656A (en) | 1983-07-11 | 1983-07-11 | Waste heat retrieving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58124627A JPS6017656A (en) | 1983-07-11 | 1983-07-11 | Waste heat retrieving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6017656A JPS6017656A (en) | 1985-01-29 |
| JPH0148470B2 true JPH0148470B2 (en) | 1989-10-19 |
Family
ID=14890093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58124627A Granted JPS6017656A (en) | 1983-07-11 | 1983-07-11 | Waste heat retrieving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6017656A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645019A (en) * | 2018-08-17 | 2018-10-12 | 广东万家乐燃气具有限公司 | A kind of double gas combustion apparatus and gas heater |
| CN113842206B (en) * | 2021-11-30 | 2022-03-01 | 海杰亚（北京）医疗器械有限公司 | Alcohol recovery method, device and system for cryoablation surgical equipment |
-
1983
- 1983-07-11 JP JP58124627A patent/JPS6017656A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6017656A (en) | 1985-01-29 |
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