JPH05223268A - Cogeneration system - Google Patents
Cogeneration systemInfo
- Publication number
- JPH05223268A JPH05223268A JP5626992A JP5626992A JPH05223268A JP H05223268 A JPH05223268 A JP H05223268A JP 5626992 A JP5626992 A JP 5626992A JP 5626992 A JP5626992 A JP 5626992A JP H05223268 A JPH05223268 A JP H05223268A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water
- hot
- mixing valve
- heat exchanger
- 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
Links
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，余剰電力を有効利用し
て常時安定した温度の湯を供給でき，小型で高性能の熱
電併給装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized and high-performance combined heat and power supply device that can effectively supply surplus power to supply hot water having a stable temperature.
【０００２】[0002]
【従来技術】近年，コージェネレーションシステム（熱
電併給装置）は，発電機により発生した電力（電力負荷
Ｒ）を店舗や家庭で使用すると共に，エンジンや発電機
の駆動に伴う冷却水，排ガスの熱源を有効利用する，比
較的小型の給湯システムとして普及しつつある。上記熱
電併給装置は，図９に示すごとく，エンジン４によって
駆動される発電機５と，該発電機５によって出力される
電力を制御するための電力制御装置５０と，該電力制御
装置５０に電気的に接続された電気ユーティリティ５３
とを有する。また，該電力制御装置５０は，中央演算処
理装置（ＣＰＵ）５１とエンジン制御回路５２を有す
る。2. Description of the Related Art In recent years, a cogeneration system (cogeneration unit) uses electric power (electric power load R) generated by a generator at a store or at home, and also heat sources of cooling water and exhaust gas accompanying the driving of an engine or a generator. It is becoming widespread as a relatively small hot water supply system that effectively uses water. As shown in FIG. 9, the combined heat and power supply device includes a generator 5 driven by the engine 4, a power control device 50 for controlling the power output by the generator 5, and an electric power control device 50. Electrically connected utility 53
Have and. Further, the power control device 50 has a central processing unit (CPU) 51 and an engine control circuit 52.
【０００３】また，上記熱電併給装置は，エンジン４の
冷却水を冷却水ポンプ７３により循環させるエンジン冷
却水循環回路７と，この回路内に設けた温水熱交換器７
１と，排ガス熱交換器７４とを有する。そして，熱電併
給装置は，上記温水熱交換器７１によって加熱された温
水を貯えておくための温水貯蔵タンク９１と，これと温
水熱交換器７１との間に設けた温水循環回路８とを有す
る。Further, the above combined heat and power supply system includes an engine cooling water circulation circuit 7 for circulating cooling water for the engine 4 by a cooling water pump 73, and a hot water heat exchanger 7 provided in this circuit.
1 and an exhaust gas heat exchanger 74. The combined heat and power supply device has a hot water storage tank 91 for storing hot water heated by the hot water heat exchanger 71, and a hot water circulation circuit 8 provided between the hot water storage tank 91 and the hot water heat exchanger 71. ..
【０００４】また，上記温水貯蔵タンク９１は，水道用
減圧弁９２と，温水センサー９３とを有する。また，上
記温水循環回路８は，温水循環用ポンプ８１と，上記温
水熱交換器７１と，水栓９８と，補助熱源装置９９を有
する。上記熱電併給装置においては，図９，図１０に示
すごとく，エンジン４によって駆動される発電機５が電
気を発生する。そして，エンジン４に用いられた燃料よ
り発生する１次エネルギーの約３０％が，電力負荷Ｒと
して，工場，家庭，店舗等の電気ユーティリティ５３に
おいて使用される。The hot water storage tank 91 has a water supply pressure reducing valve 92 and a hot water sensor 93. The hot water circulation circuit 8 includes a hot water circulation pump 81, the hot water heat exchanger 71, a faucet 98, and an auxiliary heat source device 99. In the combined heat and power supply device, as shown in FIGS. 9 and 10, the generator 5 driven by the engine 4 generates electricity. Then, about 30% of the primary energy generated from the fuel used for the engine 4 is used as the electric power load R in the electric utility 53 of the factory, home, store or the like.
【０００５】また，エンジン４を冷却して昇温した冷却
水は，上記エンジン冷却水循環回路７内に設けた温水熱
交換器７１により，温水を加温するために用いられる。
これには，上記１次エネルギーの約４０％に当るエネル
ギーが利用されている。また，エンジン４より発生する
排ガス６３０の熱により，１次エネルギー量の約２０％
が給湯のための熱源として有効利用されている。なお，
１次エネルギー量の約１０％は未利用エネルギーとして
放熱されている。The cooling water which has cooled the engine 4 and has been heated is used for heating the warm water by the hot water heat exchanger 71 provided in the engine cooling water circulation circuit 7.
Energy equivalent to about 40% of the primary energy is used for this. Also, due to the heat of the exhaust gas 630 generated from the engine 4, about 20% of the primary energy amount
Is effectively used as a heat source for hot water supply. In addition,
About 10% of the primary energy is radiated as unused energy.
【０００６】また，上記発電機５は，４極モータを有
し，その回転数が約１５００又は１８００ｒｐｍ（回／
分）となるよう，上記エンジン制御回路５２によって制
御されている。これにより，５０又は６０Ｈｚの周波数
の電流が発生し，工場，店舗，家庭等における，電気ユ
ーティリティ５３の照明や動力源として使用される。ま
た，上記排ガス６３０の熱は，上記排ガス熱交換器７４
により回収され給湯に有効利用される。しかしながら，
温水が不要で，温水熱交換器７１において，エンジン冷
却水の冷却が不足する場合は，三方弁７２が作動し，エ
ンジン４の冷却水及び排ガス６３０によって供給された
熱は，エンジン冷却水循環回路７において，ラジエータ
６１及び送風機６２によって外部へ放熱される（図９，
図１０参照）。Further, the generator 5 has a 4-pole motor, the rotation speed of which is about 1500 or 1800 rpm (times / cycle).
Min) is controlled by the engine control circuit 52. As a result, a current having a frequency of 50 or 60 Hz is generated and used as a light source or a power source for the electric utility 53 in a factory, a store, a home or the like. The heat of the exhaust gas 630 is generated by the exhaust gas heat exchanger 74.
It is collected by and used effectively for hot water supply. However,
When hot water is not needed and the cooling water of the engine is insufficient in the hot water heat exchanger 71, the three-way valve 72 operates and the heat supplied by the cooling water of the engine 4 and the exhaust gas 630 is transferred to the engine cooling water circulation circuit 7 In, the radiator 61 and the blower 62 radiate heat to the outside (FIG. 9,
(See FIG. 10).
【０００７】一方，上記温水は，上記温水貯蔵タンク９
１内に貯えられる。そして，該温水貯蔵タンク９１内の
温水は，温水センサ９３により水温Ｔが検知される。そ
して，温水が設定温度ＴL （例えば６５℃）以下になっ
た時には，温水は温水循環ポンプ８１により矢印のごと
く，温水循環回路８内を循環される。そして，上記温水
熱交換器７１によって加温される。次いで，加温された
温水は，再び温水貯蔵タンク９１内に貯えられる。ま
た，温水は，温水センサ９３により検温され，設定温度
ＴH （例えば７０℃）まで達したとき，上記温水循環ポ
ンプ８１が停止する。On the other hand, the hot water is the hot water storage tank 9
It can be stored in 1. The water temperature T of the hot water in the hot water storage tank 91 is detected by the hot water sensor 93. Then, when the temperature of the hot water becomes equal to or lower than the set temperature T L (for example, 65 ° C.), the hot water is circulated in the hot water circulation circuit 8 by the hot water circulation pump 81 as shown by an arrow. Then, it is heated by the hot water heat exchanger 71. Next, the heated warm water is stored again in the warm water storage tank 91. The hot water is detected by the hot water sensor 93, and when it reaches a set temperature T H (for example, 70 ° C.), the hot water circulation pump 81 is stopped.
【０００８】ところで，温水を使用するに当っては，水
道用減圧弁９２が作動する。これにより，水道用減圧弁
９２から水栓９８に至るまでの回路は，適正圧力（例え
ば約０．９ｋｇｆ／ｃｍ2 位）に保たれる。この状態に
おいて，水栓９８を開けることにより，設定温度ＴH の
温水を使用することができる。When hot water is used, the water pressure reducing valve 92 operates. As a result, the circuit from the water pressure reducing valve 92 to the faucet 98 is maintained at an appropriate pressure (for example, about 0.9 kgf / cm 2 ). In this state, by opening the faucet 98, hot water of the set temperature T H can be used.
【０００９】[0009]
【解決しようとする課題】しかしながら，図１１に示す
ごとく，上記熱電併給装置においては，電力負荷（使用
量）Ｒと給湯負荷Ｑとが１日の全時間帯では大きく変動
する。一方，発電された電力は，電気ユーティリティ５
３における需要量により常に変動している。そのため，
給湯用の電力量が小さくなる時には，給湯能力Ｐがこれ
に伴って低下することになり，給湯能力不足を生じる。
そこで，上記電力量が小さくなると，エンジン４の出力
を低下させるため，エンジン冷却水の温度が低下する。
そのため，温水熱交換器７１における供給熱量が低下
し，給湯の温度が低下する。However, as shown in FIG. 11, in the above-mentioned combined heat and power supply device, the electric power load (usage amount) R and the hot water supply load Q greatly fluctuate during the whole day. On the other hand, the generated electric power is the electric utility 5
It always fluctuates according to the demand volume in 3. for that reason,
When the amount of electric power for hot water supply is reduced, the hot water supply capacity P is accordingly reduced, resulting in insufficient hot water supply capacity.
Therefore, when the amount of electric power is reduced, the output of the engine 4 is reduced, so that the temperature of the engine cooling water is reduced.
Therefore, the amount of heat supplied to the hot water heat exchanger 71 is reduced, and the temperature of hot water is reduced.
【００１０】そこで，電力負荷Ｒが存在し，給湯負荷Ｑ
のない時間帯（例えば０〜６時）に余剰の給湯能力を利
用して多量の温水を得ておく必要がある。そのため，比
較的大きな温水貯蔵タンク９１（例えば，４００リット
ル以上）を準備しておき，その中に温水を貯えておかな
ければならない。それ故，この方法においては，熱電併
給装置が必然的に大型化する。そのため，大きな設置場
所が必要となる。ここで，貯蔵タンク９１の容量は，理
論的には図１１に示すごとく，給湯負荷（点散部分）の
不足分だけあれば良い。Therefore, there is an electric power load R and a hot water supply load Q.
It is necessary to obtain a large amount of hot water by utilizing the surplus hot water supply capacity during a non-existent time zone (for example, 0 to 6 o'clock). Therefore, it is necessary to prepare a relatively large hot water storage tank 91 (for example, 400 liters or more) and store hot water in it. Therefore, in this method, the cogeneration unit inevitably becomes large. Therefore, a large installation place is required. Here, theoretically, the capacity of the storage tank 91 may be the shortage of the hot water supply load (scattered portion) as shown in FIG.
【００１１】しかしながら，図９に示すごとく，ポンプ
８１により水を循環して入口９５よりタンク９１内に湯
を戻し，タンク９１内の湯温を徐々に上昇させるため，
給湯時には出口９４から市水温度の水が供給される。そ
のため，入口９５からは低温の湯がタンク９１に供給さ
れるので，水栓９８への給湯温度が変動してしまう。そ
こで，タンク９１内は，その上部に温度の高い湯が層状
に貯えられる。これを利用して，タンク９１の中央部に
入口９５を設け，上記不具合を解消している。この時，
前記給湯負荷（点散部分）は，入口９５より上層部とな
り，図１１に示す余剰能力（斜線部分，約１００リット
ル程度）が実際の安定供給には必要となる。そのため，
貯湯槽の容量が大型化する。However, as shown in FIG. 9, water is circulated by the pump 81 to return the hot water into the tank 91 from the inlet 95, and the hot water temperature in the tank 91 is gradually increased.
At the time of hot water supply, water having the city water temperature is supplied from the outlet 94. Therefore, since low-temperature hot water is supplied to the tank 91 from the inlet 95, the hot water supply temperature to the faucet 98 fluctuates. Therefore, hot water having a high temperature is stored in layers inside the tank 91. By utilizing this, the inlet 95 is provided in the central portion of the tank 91 to eliminate the above-mentioned problem. At this time,
The hot water supply load (scattered portion) is located above the inlet 95, and the surplus capacity (hatched portion, about 100 liters) shown in FIG. 11 is required for actual stable supply. for that reason,
The capacity of the hot water storage tank increases.
【００１２】また，これを避けるため，図９に示すごと
く，タンク９１の下流に補助熱源９９を設け，タンク９
１からの給湯温度の変動をカバーする方法も考えられ
る。しかしながら，この方法は，経済性と設置性の点で
問題がある。一方，上記問題を解決するために，図９に
示すごとく，上記電力負荷Ｒの不足を補足する目的で，
補助電源装置９９としてのブースタヒータ装置を温水循
環回路の下流側に配設する提案がなされている（例え
ば，特開平１−２９６０４２号公報）。しかしながら，
上記提案においては，上記ブースタヒータ装置をセラミ
ック材又はプラスチック材からなる不導体の筒体によっ
て構成している。In order to avoid this, as shown in FIG. 9, an auxiliary heat source 99 is provided downstream of the tank 91 so that the tank 9
A method of covering the fluctuation of the hot water supply temperature from 1 can also be considered. However, this method has problems in terms of economy and installation. On the other hand, in order to solve the above problem, as shown in FIG. 9, for the purpose of supplementing the shortage of the power load R,
It has been proposed to arrange a booster heater device as an auxiliary power supply device 99 on the downstream side of the hot water circulation circuit (for example, Japanese Patent Laid-Open No. 1-296042). However,
In the above proposal, the booster heater device is formed of a non-conductive tubular body made of a ceramic material or a plastic material.
【００１３】そのため，上記ブースタヒータ装置は，そ
の熱消費量が多くならざるを得ず，上記公報に示された
ごとく，高電圧（４００〜３０００Ｖｏｌｔ）の電源を
使用しなればならない。それ故，上記熱電併給装置にお
いては，通常の電圧（例えば１００〜２００Ｖｏｌｔ）
の電力を使用することができない。そのため，家庭用，
業務用として用いられる比較的小型の熱電併給装置にお
いては，上記従来技術を応用することができない。した
がって，上記従来技術は，実用性に乏しい。本発明は，
かかる従来の問題点に鑑みてなされたもので，余剰電力
を有効利用して常時安定した温度の湯を供給でき，小型
で高性能の熱電併給装置を提供しようとするものであ
る。Therefore, the booster heater device inevitably consumes a large amount of heat, and as shown in the above publication, must use a high voltage (400 to 3000 Volt) power source. Therefore, in the above-mentioned combined heat and power device, a normal voltage (for example, 100 to 200 Volt) is used.
Can not use the power of. Therefore, for home use,
The above-mentioned conventional technique cannot be applied to a comparatively small heat and power cogeneration device used for business use. Therefore, the above-mentioned conventional technique is not practical. The present invention is
The present invention has been made in view of such conventional problems, and it is an object of the present invention to provide a small-sized and high-performance combined heat and power supply device that can effectively use excess power to supply hot water having a stable temperature at all times.
【００１４】[0014]
【課題の解決手段】本発明は，エンジンによって駆動さ
れる発電機と，該発電機に接続された電気ユーティリテ
ィとを有し，またエンジンの冷却水を冷却するためのエ
ンジン冷却水循環回路と，該エンジン冷却水循環回路内
に設けた温水熱交換器と、温水貯蔵タンクと，該温水貯
蔵タンクと上記温水熱交換器との間に設けた温水循環回
路とよりなる熱電併給装置において，上記温水循環回路
内には，上記温水熱交換器に接続した混合弁と，該混合
弁の開閉を制御するための混合弁制御装置を設けたこと
を特徴とする熱電併給装置にある。The present invention has an engine driven water generator and an electric utility connected to the electric generator, and an engine cooling water circulation circuit for cooling engine cooling water; A combined heat and power supply device comprising a hot water heat exchanger provided in an engine cooling water circulation circuit, a hot water storage tank, and a hot water circulation circuit provided between the hot water storage tank and the hot water heat exchanger, the hot water circulation circuit comprising: A combined heat and power supply device is characterized in that a mixing valve connected to the hot water heat exchanger and a mixing valve control device for controlling opening / closing of the mixing valve are provided therein.
【００１５】本発明において最も注目すべきことは，温
水循環回路内には，上記温水熱交換器に接続した混合弁
と，該混合弁の開閉を制御するための混合弁制御装置を
設けたことである。上記温水熱交換器としては，例えば
２重管式又は多板式の熱交換器を用いる。上記混合弁と
しては，例えばサーモスタット付き混合栓（図２参照）
を用いる。また，上記混合弁３には，バイパス回路を設
けて湯を使用しない時，即ち非給湯時には，そのバイパ
ス回路を開く電磁弁等を設ける。What is most noticeable in the present invention is that a mixing valve connected to the hot water heat exchanger and a mixing valve control device for controlling opening / closing of the mixing valve are provided in the hot water circulation circuit. Is. As the hot water heat exchanger, for example, a double pipe type or multi-plate type heat exchanger is used. As the mixing valve, for example, a mixing stopper with a thermostat (see FIG. 2)
To use. Further, the mixing valve 3 is provided with an electromagnetic valve or the like for opening the bypass circuit when the bypass circuit is provided and hot water is not used, that is, when hot water is not supplied.
【００１６】[0016]
【作用及び効果】本発明において，温水循環回路内に
は，温水熱交換器に接続した混合弁と，該混合弁の開閉
を制御するため混合弁制御装置を設けてある。そのた
め，余剰電力等の余剰能力を利用して，予め設定した貯
湯温度の温水を温水貯蔵タンク内に貯蔵しておくことが
できる。In the present invention, in the hot water circulation circuit, the mixing valve connected to the hot water heat exchanger and the mixing valve control device for controlling the opening / closing of the mixing valve are provided. Therefore, hot water having a preset hot water storage temperature can be stored in the hot water storage tank by utilizing the surplus capacity such as surplus power.
【００１７】それ故，給湯不足時（図１１参照）には，
上記温水貯蔵タンクより送り出された温水と低温水（例
えば市水）とを，上記混合弁内で制御しながら混合し
て，一定の温度の温水を使用することができる。それ
故，温水の使用時には，常時安定した温度の湯（設定温
度ＴH の温水）を提供することができる。更に，混合弁
においては，特定の湯温制御を行うことにより，熱交換
器において不足した給湯能力分のみ，温水貯蔵タンク内
の湯を利用することができる。そのため，上記効果によ
り，従来の温水貯蔵タンクの容量よりも，温水貯蔵タン
クを小型化し，ミニタンクシステムを提供することがで
きる。Therefore, when the hot water supply is insufficient (see FIG. 11),
The hot water and low temperature water (for example, city water) sent from the hot water storage tank can be mixed while being controlled in the mixing valve to use the hot water having a constant temperature. Therefore, when using the hot water, it is possible to provide a constantly stable temperature of the hot water (the hot water set temperature T H). Furthermore, by performing a specific hot water temperature control in the mixing valve, the hot water in the hot water storage tank can be used only for the hot water supply capacity that is insufficient in the heat exchanger. Therefore, due to the above effects, the hot water storage tank can be made smaller than the capacity of the conventional hot water storage tank, and a mini tank system can be provided.
【００１８】また，本熱電併給装置においては，補助熱
源（図９の符号９９）としての補助ボイラーや高電圧を
使用しなければならないブースターヒータ装置等が不要
である。そのため，比較的小型の熱電併給装置とするこ
とができる。以上のごとく，本発明によれば，余剰電力
を有効利用して常時安定した温度の湯を供給でき，小型
で高性能の熱電併給装置を提供することができる。Further, the present combined heat and power supply apparatus does not require an auxiliary boiler as an auxiliary heat source (reference numeral 99 in FIG. 9) or a booster heater device which must use a high voltage. Therefore, a relatively small combined heat and power supply device can be obtained. As described above, according to the present invention, it is possible to provide a compact and high-performance combined heat and power supply device that can effectively use excess power to supply hot water having a stable temperature at all times.
【００１９】[0019]
【実施例】本発明にかかる実施例の熱電併給装置につ
き，図１〜図８を用いて説明する。本例の熱電併給装置
は，図１に示すごとく，エンジン４によって駆動される
発電機５と，ＣＰＵ５１と，電気ユーティリティ５３と
を有する。また，上記熱電併給装置は，同図に示すごと
く，エンジン４の冷却水を循環するためのエンジン冷却
水循環回路７と，該エンジン冷却水循環回路７内に設け
た温水熱交換器７１と，温水貯蔵タンク２１と，該温水
貯蔵タンク２１と温水熱交換器７１との間に設けた温水
循環回路１とよりなる。EXAMPLE A combined heat and power supply apparatus according to an example of the present invention will be described with reference to FIGS. As shown in FIG. 1, the combined heat and power supply device of this example includes a generator 5 driven by an engine 4, a CPU 51, and an electric utility 53. Further, as shown in the figure, the combined heat and power supply apparatus includes an engine cooling water circulation circuit 7 for circulating cooling water for the engine 4, a hot water heat exchanger 71 provided in the engine cooling water circulation circuit 7, and a hot water storage. It comprises a tank 21 and a hot water circulation circuit 1 provided between the hot water storage tank 21 and the hot water heat exchanger 71.
【００２０】上記温水循環回路１内には，図１に示すご
とく，上記温水熱交換器７１に接続した混合弁３と，該
混合弁３の開閉を制御するための混合弁制御装置３Ａを
設けてなる。該混合弁制御装置３Ａは，混合弁３のケー
シング３Ｂの中に組みこまれている。上記混合弁３は，
図２に示すごとく，三方（スリーウェイ）バルブよりな
る。そして，該混合弁３は，略Ｔ字形の流路を有し，該
流路は水流入路３Ｌと，湯流入路３Ｈと，混合湯流出路
３Ｍとよりなる。上記水流入路３Ｌは，水ポート３５２
に，湯流入路３Ｈは湯ポート３５１に，混合湯流出路３
Ｍは混合湯ポート３５３に接続してある。As shown in FIG. 1, the hot water circulation circuit 1 is provided with a mixing valve 3 connected to the hot water heat exchanger 71 and a mixing valve control device 3A for controlling the opening and closing of the mixing valve 3. It becomes. The mixing valve control device 3A is incorporated in the casing 3B of the mixing valve 3. The mixing valve 3 is
As shown in FIG. 2, it consists of a three-way valve. The mixing valve 3 has a substantially T-shaped flow passage, and the flow passage includes a water inflow passage 3L, a hot water inflow passage 3H, and a mixed hot water outflow passage 3M. The water inflow passage 3L is connected to the water port 352.
The hot water inlet 3H is connected to the hot water port 351 and the mixed hot water outlet 3
M is connected to the mixed hot water port 353.
【００２１】上記混合弁制御装置３Ａは，図３に示すご
とく，サーモスタット３０とスライド弁３５とバネ受け
部３８とを有する。上記サーモスタット３０は，図５に
示すごとく，ワックス３０１が充填された筒状カップ３
０２と，これらの上方に配置したスリーブ３０３と，該
スリーブ３０３の上方に突出したピストン３０４と，該
ピストン３０４をスライド可能に支承するカバー３０５
と，上記筒状カップ３０２を覆うカートリッジ状のケー
ス３０６とよりなる。The mixing valve control device 3A has a thermostat 30, a slide valve 35, and a spring receiving portion 38, as shown in FIG. As shown in FIG. 5, the thermostat 30 has a cylindrical cup 3 filled with wax 301.
02, a sleeve 303 arranged above them, a piston 304 projecting above the sleeve 303, and a cover 305 slidably supporting the piston 304.
And a cartridge-shaped case 306 that covers the cylindrical cup 302.
【００２２】上記ワックス３０１は，銅粉を混入したパ
ラフィンよりなる。また，上記スリーブ３０３は，フッ
素系合成ゴムよりなる。そして，上記筒状カップ３０
２，ピストン３０４，カバー３０５は，いずれも熱伝導
性に優れた真ちゅう等の金属よりなる。The wax 301 is made of paraffin mixed with copper powder. The sleeve 303 is made of fluorine synthetic rubber. And the cylindrical cup 30
2, the piston 304 and the cover 305 are all made of metal such as brass having excellent heat conductivity.
【００２３】上記サーモスタット３０には，図２〜図４
に示すごとく，開口部３５３を有する，プッシュリング
３４６が頭部３００に固定されており，ピストンの出入
により生じる動きをスライド弁３５に伝達する。また，
該サーモスタット３０の側面には，スライド弁３５をプ
ッシュリング３４６に押し付ける，パイロットスプリン
グ３８０およびバネ受け部３８が配設してある。そし
て，該バネ受け部３８は，混合弁３のケーシング３Ｂに
固定してある。The thermostat 30 is shown in FIGS.
As shown in FIG. 5, a push ring 346 having an opening 353 is fixed to the head portion 300, and the movement caused by the movement of the piston is transmitted to the slide valve 35. Also,
A pilot spring 380 and a spring receiving portion 38 for pressing the slide valve 35 against the push ring 346 are provided on the side surface of the thermostat 30. The spring receiving portion 38 is fixed to the casing 3B of the mixing valve 3.
【００２４】上記サーモスタット３０には，図２〜図４
に示すごとく，調整ハンドル部３４３を有する。該調整
ハンドル３４３は，温水温度設定ねじ３４４に連結して
ある。そして，該温水温度設定ねじ３４４は，温度調整
パイプ３４５内にスライド可能に配置してある。図１に
おいて，上記温水熱交換器７１としては，上記エンジン
４の冷却水を熱交換するための熱交換器を用いる。The thermostat 30 is shown in FIGS.
As shown in FIG. The adjusting handle 343 is connected to the hot water temperature setting screw 344. The hot water temperature setting screw 344 is slidably arranged in the temperature adjusting pipe 345. In FIG. 1, as the hot water heat exchanger 71, a heat exchanger for exchanging heat of the cooling water of the engine 4 is used.
【００２５】上記温水貯蔵タンク２１は，従来の熱電併
給装置における温水貯蔵タンク９に比して容量が小さ
い，比較的小型の温水槽を用いる。これにより，熱電併
給装置全体をコンパクト化して，温水貯蔵タンク２１の
設置面積の低減化（省スペース），配（設）置性の向上
が可能になる。これにより，ミニタンクシステム２を得
ることができる。その他は，従来と同様である。As the hot water storage tank 21, a relatively small hot water tank having a smaller capacity than the hot water storage tank 9 in the conventional combined heat and power device is used. This makes it possible to reduce the installation area of the hot water storage tank 21 (space saving) and improve the dispositionability (installation) by making the entire combined heat and power unit compact. Thereby, the mini tank system 2 can be obtained. Others are the same as the conventional one.
【００２６】次に作用効果につき説明する。まず，本例
にかかる熱電併給装置の基本的なフローにつき，図８の
フローチャートを用いて説明する。まず，給湯の設定温
度ＴH （例えば６５℃）が，給湯使用者によって設定さ
れる。また，温水貯蔵タンク２１内に貯蔵する温水の貯
湯温度ＴW （例えば７５℃）が設定される。同図におい
て，Ｓ（ステップ）１０１では，図１に示すごとく，給
湯使用者によって 水栓１５が開けられ，給湯開始と共
にこのフローがスタートする。次いで，Ｓ１０２では，
温水循環回路１内の流れ検知センサー１４により温水の
流れが開始したことが検知される。Next, the function and effect will be described. First, the basic flow of the combined heat and power supply apparatus according to this example will be described with reference to the flowchart of FIG. First, the hot water supply set temperature T H (for example, 65 ° C.) is set by the hot water supply user. Further, a hot water storage temperature T W (for example, 75 ° C.) stored in the hot water storage tank 21 is set. In the figure, in S (step) 101, as shown in FIG. 1, the water tap 15 is opened by the hot water supply user, and this flow starts when hot water supply is started. Then, in S102,
The flow detection sensor 14 in the hot water circulation circuit 1 detects that the flow of hot water has started.
【００２７】次に，Ｓ１０３では，混合弁３及び混合弁
制御装置３Ａとしてのサーモスタット３０が作動する。
即ち，サーモスタット３０は，図６，図７に示すごと
く，ピストン３０４の作動により，スライド弁３５及び
プッシュリング３４６を作動させ給湯の設定温度ＴH に
温水と市水とを適量づつ混合する。即ち，図２，図４に
示すごとく，上記混合弁３内で温水と低温水とを適量づ
つ混合し，水栓１５側の混合湯路１２へ混合温水Ｍを送
り出す。この時，上記フローは終了（エンド）する。Next, in S103, the mixing valve 3 and the thermostat 30 as the mixing valve control device 3A are operated.
That is, as shown in FIGS. 6 and 7, the thermostat 30 operates the slide valve 35 and the push ring 346 by the operation of the piston 304 to mix hot water and city water in appropriate amounts to the set temperature T H for hot water supply. That is, as shown in FIGS. 2 and 4, hot water and low temperature water are mixed in appropriate amounts in the mixing valve 3, and the mixed hot water M is sent to the mixing hot water passage 12 on the faucet 15 side. At this time, the above flow ends.
【００２８】一方，上記Ｓ１０２において，検知センサ
ー１４が温水の流れを検知しない時，即ち水栓１５が開
けられない時は，Ｓ１０４へ進む。そして，Ｓ１０４で
は，温水センサー２３（図１）により，温水の水温Ｔが
読み取られる。ここで，水温Ｔが貯湯温度ＴW よりも低
い時（Ｙ）には，Ｓ１０５へ進む。次に，Ｓ１０５で
は，電磁弁１３（図１）が作動（ＯＮ）して，バイパス
回路１７を温水が通ることになる。そして，，Ｓ１０６
へ進む。On the other hand, in S102, when the detection sensor 14 does not detect the flow of hot water, that is, when the faucet 15 cannot be opened, the process proceeds to S104. Then, in S104, the water temperature T of the hot water is read by the hot water sensor 23 (FIG. 1). Here, when the water temperature T is lower than the hot water storage temperature T W (Y), the process proceeds to S105. Next, in S105, the solenoid valve 13 (FIG. 1) is operated (ON), and hot water passes through the bypass circuit 17. Then, S106
Go to.
【００２９】Ｓ１０６では，温水循環ポンプ１６が作動
し，温水循環回路１において温水が循環される。そし
て，温水は，温水循環回路１内を循環し，温水熱交換器
７１により加温されて上記貯湯温度ＴW （例えば７５
℃）に至るまで，この作動が繰り返される。一方，上記
Ｓ１０４において，水温Ｔが貯湯温度ＴW よりも高い時
（Ｎ）は，Ｓ１０８へ進む。これにより，上記フローは
終了する。In S106, the hot water circulation pump 16 is operated and hot water is circulated in the hot water circulation circuit 1. Then, the hot water circulates in the hot water circulation circuit 1 and is heated by the hot water heat exchanger 71 so that the hot water storage temperature T W (for example, 75
This operation is repeated until (° C) is reached. On the other hand, in S104, when the water temperature T is higher than the hot water storage temperature T W (N), the process proceeds to S108. This ends the above flow.
【００３０】以下，上記フローを，図１〜図７を用い
て，その主要部分を具体的に説明する。まず，上記設定
温度ＴH は，温水使用者がその使用目的により決定す
る。通常生活用の給湯として使用する場合は，ＴH が６
５℃に設定される。ところで，一時的に大量の給湯量を
必要としたり，図１１に示すごとく，給湯不足の場合が
生ずる。この場合においては，次のごとく，サーモスタ
ット３０が該混合弁３の開閉を制御することになる。The main part of the above flow will be described in detail below with reference to FIGS. First, the set temperature T H is determined by the user of hot water according to the purpose of use. If you want to use as hot water for a normal life, T H 6
Set to 5 ° C. By the way, there may occur a case where a large amount of hot water supply is required temporarily or there is a shortage of hot water supply as shown in FIG. In this case, the thermostat 30 controls the opening / closing of the mixing valve 3 as follows.
【００３１】ここで，まず温水の水温Ｔが設定温度ＴH
に比して低い場合には，上記混合弁１に内蔵したサーモ
スタット３０が次のように作動する。上記サーモスタッ
ト３０には，図２に示すごとく，混合弁３内に矢印方向
より温水Ｈ，低温水Ｌが入ってくると，その温度に応じ
てワックス３０１が熱膨張する。これにより，図６に示
すごとく，ピストン３０４が伸長する。Here, first, the water temperature T of the hot water is the set temperature T H.
If the temperature is lower than the above, the thermostat 30 built in the mixing valve 1 operates as follows. As shown in FIG. 2, when the hot water H and the low temperature water L enter the thermostat 30 in the mixing valve 3 from the direction of the arrow, the wax 301 thermally expands according to the temperature. As a result, the piston 304 extends as shown in FIG.
【００３２】即ち，該ピストン３０４は，上記混合温水
Ｍが設定温度ＴH （６５℃）よりも低いため，図６Ｅに
示すごとく，比較的短いＨO のリフト量となる。これに
より，図４に示すごとく，貯湯回路１１より貯湯Ｈが流
入するよう，スライド弁３５が矢印方向に移動して貯湯
流入用の開口部３５１が開く。その結果，約７５℃の貯
湯Ｈが上記低温水Ｌと適量づつ混合して，上記設定温度
ＴH の混合温水Ｍが温水流出口３Ｍを経て，図１，図２
に示すごとく，供給パイプ１２へ送り出される。That is, since the mixed hot water M is lower than the set temperature T H (65 ° C.), the piston 304 has a relatively short lift amount of H O as shown in FIG. 6E. As a result, as shown in FIG. 4, the slide valve 35 moves in the direction of the arrow so that the hot water storage H flows in from the hot water storage circuit 11, and the hot water storage inflow opening 351 opens. As a result, the hot water storage H of about 75 ° C. are mixed at a time appropriate amount and the cold water L, mixing warm water M of the set temperature T H is via the hot water outlet 3M, 1, 2
As shown in FIG.
【００３３】一方，上記混合温水Ｍが設定温度ＴH より
も高い時は，図６Ｇに示すごとく，ピストン３０４は前
記低温の場合よりも，比較的長いＨ（Ｈ1 ＋Ｈ2 ）のリ
フト量となる。これにより，図３に示すごとく，貯湯Ｈ
が流入する開口部３５１が閉じる。これにより，貯湯温
度ＴW （７５℃）の貯湯Ｈの流入は阻止される。これに
より，図３に示すごとく，低温水流入用の開口部３５２
が開き，混合弁３内に，流水回路１０より低温水Ｌが流
入してくる。そのため，水温Ｔは下げられ，設定温度Ｔ
H になり，混合温水Ｍが混合湯回路１２へ送り出され
る。On the other hand, when the mixed hot water M is higher than the set temperature T H , as shown in FIG. 6G, the piston 304 has a lift amount of H (H 1 + H 2 ) which is relatively longer than that at the low temperature. Become. As a result, as shown in FIG.
The opening 351 through which the air flows is closed. As a result, the inflow of the hot water storage H at the hot water storage temperature T W (75 ° C.) is blocked. As a result, as shown in FIG. 3, the opening 352 for inflowing low temperature water is formed.
The low temperature water L flows into the mixing valve 3 from the flowing water circuit 10. Therefore, the water temperature T is lowered and the set temperature T
It becomes H , and the mixed hot water M is sent out to the mixed hot water circuit 12.
【００３４】一方，上記温水熱交換器７１は，エンジン
冷却水循環回路７内を循環している冷却水が，三方弁７
２の開放により温水熱交換器７１まで送られてきた時に
作動する。これらの制御は，全て上記ＣＰＵ５１によっ
て行われる。そして，温水を加温する必要が生じた時に
は，上記温水熱交換器７１により温水を優先的に加温度
するよう制御される。On the other hand, in the hot water heat exchanger 71, the cooling water circulating in the engine cooling water circulation circuit 7 is
It is activated when it is sent to the hot water heat exchanger 71 by opening 2. All of these controls are performed by the CPU 51. Then, when it becomes necessary to heat the hot water, the hot water heat exchanger 71 is controlled to preferentially heat the hot water.
【００３５】この時，上記三方弁７２は，温水の水温Ｔ
を検知し，温水が設定温度ＴH まで加熱された時，補助
放熱手段であるラジエータ６１へ冷却水が流れる。これ
も，上記ＣＰＵ５１により制御される。以上のごとく，
上記温水循環回路１内においては，混合弁３と該混合弁
３の開閉を制御するための混合弁制御装置としてのサー
モスタット３０が設けてある。それ故，給湯不足時（図
１１参照）には，上記混合弁３により温水貯蔵タンク２
１より取り出した温水と低温水（例えば市水）とを混合
して，一定温度（設定温度ＴH ）の温水を給湯すること
ができる。At this time, the three-way valve 72 causes the water temperature T of the hot water to rise.
Detects, when the hot water is heated to a set temperature T H, the cooling water flows into the radiator 61 is an auxiliary heat dissipating means. This is also controlled by the CPU 51. As mentioned above,
In the hot water circulation circuit 1, a mixing valve 3 and a thermostat 30 as a mixing valve control device for controlling opening / closing of the mixing valve 3 are provided. Therefore, when the hot water supply is insufficient (see FIG. 11), the mixing valve 3 causes the hot water storage tank 2 to
It is possible to mix hot water and low-temperature water (for example, city water) taken out from No. 1 to supply hot water having a constant temperature (set temperature TH ).
【００３６】それ故，温水の使用時には，常時安定した
温度の湯を供給することができる。したがって，本例に
よれば，余剰給湯能力がある時に小型の貯湯槽内に必要
量の湯を貯めておき，給湯能力が不足した時に，貯めて
おいた湯を混合利用する。これにより，常時安定した温
度の湯を供給でき，小型で高性能の熱電併給装置を得る
ことができる。Therefore, when hot water is used, hot water having a stable temperature can be constantly supplied. Therefore, according to this example, a required amount of hot water is stored in a small hot water storage tank when there is an excess hot water supply capacity, and when the hot water supply capacity is insufficient, the stored hot water is mixed and used. As a result, it is possible to constantly supply hot water at a stable temperature, and to obtain a compact and high-performance cogeneration unit.
【００３７】本例によれば，常に熱交換器側の低温水を
１００％利用でき，低温水に適量だけの貯湯温水を混合
すれば良い。そのため，従来のごとく，大きなタンクを
必要とすることなく，ほぼ理論通りの最低限の貯湯量を
確保すれば良いため，従来の温水貯蔵タンク９１よりも
容量の小さい小型の温水貯蔵タンク２１を用いることが
できる。そのため，温水貯蔵タンク２１の設置性，施工
性が向上する。これにより，ミニタンクシステム２を得
ることができる。また，本例においては，従来例のごと
く，補助ボイラーやブースターヒータ装置等の補助熱源
を必要としないため，小型のミニタンクシステム２を有
する熱電併給装置とすることができる。According to this example, 100% of the low-temperature water on the heat exchanger side can always be used, and it is sufficient to mix an appropriate amount of hot-water storage water with the low-temperature water. Therefore, unlike the conventional case, a small hot water storage tank 21 having a smaller capacity than that of the conventional hot water storage tank 91 is used because it is sufficient to secure a minimum theoretical amount of hot water storage without requiring a large tank. be able to. Therefore, the installability and workability of the hot water storage tank 21 are improved. Thereby, the mini tank system 2 can be obtained. Further, in the present example, unlike the conventional example, an auxiliary heat source such as an auxiliary boiler or a booster heater device is not required, so that a combined heat and power supply device having a small mini-tank system 2 can be obtained.
【図１】実施例にかかる熱電併給装置の回路図。FIG. 1 is a circuit diagram of a combined heat and power supply device according to an embodiment.
【図２】実施例における，混合弁の断面図。FIG. 2 is a sectional view of a mixing valve according to an embodiment.
【図３】実施例における，混合水が高温である場合の混
合弁の作動説明図。FIG. 3 is an operation explanatory view of the mixing valve when the mixed water has a high temperature in the embodiment.
【図４】実施例における，混合水が低温である場合の混
合弁の作動説明図。FIG. 4 is an explanatory view of the operation of the mixing valve when the mixed water has a low temperature in the embodiment.
【図５】実施例における，サーモスタットの一部切欠側
面図。FIG. 5 is a partially cutaway side view of the thermostat in the embodiment.
【図６】実施例における，サーモスタットの作動説明図FIG. 6 is an explanatory view of the operation of the thermostat in the embodiment.
【図７】実施例における，サーモスタットのピストンの
リフト量と温水の温度との関係を示すグラフ。FIG. 7 is a graph showing the relationship between the lift amount of the thermostat piston and the temperature of hot water in the example.
【図８】実施例にかかる熱電併給装置のフローチャート
図。FIG. 8 is a flowchart of the combined heat and power supply device according to the embodiment.
【図９】従来の熱電併給装置の回路図。FIG. 9 is a circuit diagram of a conventional combined heat and power supply device.
【図１０】従来の熱電併給装置におけるエンジンに用い
られる燃料の１次発生エネルギーの利用率を示す説明
図。FIG. 10 is an explanatory diagram showing a utilization rate of primary generated energy of fuel used for an engine in a conventional combined heat and power supply device.
【図１１】給湯負荷Ｑと電力負荷Ｒと１日の全時間帯と
の関係を示すグラフ。FIG. 11 is a graph showing the relationship between the hot water supply load Q, the electric power load R, and the total time of the day.
１．．．温水循環回路， ２１．．．温水貯蔵タンク， ３．．．混合弁， ３０．．．サーモスタット， ４．．．エンジン， ５．．．発電機， ５３．．．電気ユーティリティ， ７．．．エンジン冷却水循環回路， ７１．．．温水熱交換器， 1. ． ． Hot water circulation circuit, 21. ． ． Hot water storage tank, 3. ． ． Mixing valve, 30. ． ． Thermostat, 4. ． ． Engine, 5. ． ． Generator, 53. ． ． Electric utility, 7. ． ． Engine cooling water circulation circuit, 71. ． ． Hot water heat exchanger,
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２４Ｈ 8/00 9251−3Ｌ Ｆ２４Ｈ 1/00 ３１３ Ｚ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI Technical display location F24H 8/00 9251-3L F24H 1/00 313 Z
Claims (1)
該発電機に接続された電気ユーティリティとを有し，ま
たエンジンの冷却水を冷却するためのエンジン冷却水循
環回路と，該エンジン冷却水循環回路内に設けた温水熱
交換器と、温水貯蔵タンクと，該温水貯蔵タンクと上記
温水熱交換器との間に設けた温水循環回路とよりなる熱
電併給装置において，上記温水循環回路内には，上記温
水熱交換器に接続した混合弁と，該混合弁の開閉を制御
するための混合弁制御装置を設けたことを特徴とする熱
電併給装置。1. A generator driven by an engine,
An engine cooling water circulation circuit for cooling engine cooling water, an electric utility connected to the generator, a hot water heat exchanger provided in the engine cooling water circulation circuit, and a hot water storage tank, In a combined heat and power device comprising a hot water circulation circuit provided between the hot water storage tank and the hot water heat exchanger, a mixing valve connected to the hot water heat exchanger and the mixing valve in the hot water circulation circuit. A combined heat and power supply device, which is provided with a mixing valve control device for controlling opening and closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5626992A JPH05223268A (en) | 1992-02-06 | 1992-02-06 | Cogeneration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5626992A JPH05223268A (en) | 1992-02-06 | 1992-02-06 | Cogeneration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05223268A true JPH05223268A (en) | 1993-08-31 |
Family
ID=13022372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5626992A Pending JPH05223268A (en) | 1992-02-06 | 1992-02-06 | Cogeneration system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05223268A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364919A (en) * | 2001-06-07 | 2002-12-18 | Chofu Seisakusho Co Ltd | Cogeneration system |
| KR20030088084A (en) * | 2002-05-11 | 2003-11-17 | 황성용 | Hot water Suppling System |
| WO2011028401A3 (en) * | 2009-08-27 | 2011-06-16 | Mcalister Roy E | Energy system for dwelling support |
| US8313556B2 (en) | 2009-02-17 | 2012-11-20 | Mcalister Technologies, Llc | Delivery systems with in-line selective extraction devices and associated methods of operation |
| US8940265B2 (en) | 2009-02-17 | 2015-01-27 | Mcalister Technologies, Llc | Sustainable economic development through integrated production of renewable energy, materials resources, and nutrient regimes |
| US9097152B2 (en) | 2009-02-17 | 2015-08-04 | Mcalister Technologies, Llc | Energy system for dwelling support |
| US9231267B2 (en) | 2009-02-17 | 2016-01-05 | Mcalister Technologies, Llc | Systems and methods for sustainable economic development through integrated full spectrum production of renewable energy |
-
1992
- 1992-02-06 JP JP5626992A patent/JPH05223268A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364919A (en) * | 2001-06-07 | 2002-12-18 | Chofu Seisakusho Co Ltd | Cogeneration system |
| JP4664533B2 (en) * | 2001-06-07 | 2011-04-06 | 株式会社長府製作所 | Cogeneration system |
| KR20030088084A (en) * | 2002-05-11 | 2003-11-17 | 황성용 | Hot water Suppling System |
| US8313556B2 (en) | 2009-02-17 | 2012-11-20 | Mcalister Technologies, Llc | Delivery systems with in-line selective extraction devices and associated methods of operation |
| US8940265B2 (en) | 2009-02-17 | 2015-01-27 | Mcalister Technologies, Llc | Sustainable economic development through integrated production of renewable energy, materials resources, and nutrient regimes |
| US9097152B2 (en) | 2009-02-17 | 2015-08-04 | Mcalister Technologies, Llc | Energy system for dwelling support |
| US9231267B2 (en) | 2009-02-17 | 2016-01-05 | Mcalister Technologies, Llc | Systems and methods for sustainable economic development through integrated full spectrum production of renewable energy |
| WO2011028401A3 (en) * | 2009-08-27 | 2011-06-16 | Mcalister Roy E | Energy system for dwelling support |
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