JP5215039B2 - Control method for hot water heater - Google Patents

Control method for hot water heater Download PDF

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JP5215039B2
JP5215039B2 JP2008134272A JP2008134272A JP5215039B2 JP 5215039 B2 JP5215039 B2 JP 5215039B2 JP 2008134272 A JP2008134272 A JP 2008134272A JP 2008134272 A JP2008134272 A JP 2008134272A JP 5215039 B2 JP5215039 B2 JP 5215039B2
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heating
temperature
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going
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JP2009281666A (en
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真典 上田
亮 荒木
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Corona Corp
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    • 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]
    • Y02B30/12—Hot water central heating systems using heat pumps

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Description

本発明は、熱源機で加熱した温水を住宅内に配置された複数の温水暖房端末器へ循環させて暖房を行う温水暖房装置の制御方法に関するものである。   The present invention relates to a method for controlling a hot water heating apparatus that performs heating by circulating hot water heated by a heat source machine to a plurality of hot water heating terminals arranged in a house.

従来よりこの種の温水暖房装置においては、特許文献１に示すように、熱源機で加熱した温水を住宅内に配置された複数の床暖房パネルへ並列に循環させて暖房を行う温水暖房装置において、床の温度設定が一番高い暖房系統の温水の戻り温度が設定温度になるように温水往き温度を増減させ、この温水往き温度となるように熱源機の加熱量を制御すると共に、床温設定が一番高い暖房系統以外の暖房系統では、温水戻り温度が設定温度付近の所定範囲に入るように熱動弁を開閉するようにし、温水往き温度をできるだけ低下させて熱ロスを減らすようにしたものがあった。   Conventionally, in this type of hot water heating device, as shown in Patent Document 1, in a hot water heating device that performs heating by circulating hot water heated by a heat source machine in parallel to a plurality of floor heating panels arranged in a house The warm water return temperature is increased or decreased so that the return temperature of the hot water in the heating system with the highest floor temperature setting becomes the set temperature, and the heating amount of the heat source machine is controlled so as to be the warm water return temperature, and the floor temperature In heating systems other than the heating system with the highest setting, open and close the thermal valve so that the hot water return temperature falls within the specified range near the set temperature, and reduce the heat loss by reducing the hot water going temperature as much as possible. There was something to do.

一方、温水コンベクターや温水ラジエーターを用いた暖房システムにおいては、特許文献２に示すように、温水コンベクターや温水ラジエーターの温度を高めに保持して、各端末の温水出入口に設けたサーモバルブおよびサーモヘッドで雰囲気温度が設定室温を超えると温水の循環量を抑制することによって室温を制御するようにしているものがあった。
特開２００８−２５９４５号公報 特開平０８−１５２１５１号公報 On the other hand, in a heating system using a hot water convector or a hot water radiator, as shown in Patent Document 2, the temperature of the hot water convector or the hot water radiator is kept high, and a thermo valve provided at the hot water inlet / outlet of each terminal and Some thermo heads control the room temperature by suppressing the circulation rate of hot water when the ambient temperature exceeds the set room temperature.
JP 2008-25945 A Japanese Patent Laid-Open No. 08-152151

しかし、この特許文献１のものにおいては、床暖房パネルがユーザーにより設定される設定温水戻り温度近傍の温度になるように、温水の戻り温度に基づいて熱源機が制御されるのみであるので、外気温度の変動による暖房負荷の増減については全く考慮されていないため過剰暖房や暖房不足が生じ、室温を制御することができないものであった。   However, in the thing of this patent document 1, since a heat source machine is only controlled based on the return temperature of warm water so that a floor heating panel may become the temperature of the setting warm water return temperature set by the user, Since the increase or decrease of the heating load due to fluctuations in the outside air temperature is not taken into account at all, excessive heating or insufficient heating occurs, and the room temperature cannot be controlled.

また、特許文献２のものにおいては、サーモバルブおよびサーモヘッドで室温が制御できるものの、温水往き温度あるいは温水戻り温度を高くせざるを得ないため、放熱ロスが多く発生してしまうものであった。   Moreover, in the thing of patent document 2, although room temperature can be controlled with a thermo valve and a thermo head, since a warm water going-out temperature or a warm water return temperature must be made high, many heat dissipation loss will generate | occur | produce. .

そこで、本発明は、温水往き温度をできるだけ低下させて熱ロスを減らすと共に、室温を制御することができるようにし、温水コンベクターや温水ラジエーターを用いた全館暖房に特に好適な温水暖房装置の制御方法を提供することを目的とする。   Therefore, the present invention reduces the heat loss by reducing the hot water going temperature as much as possible, and can control the room temperature, and controls the hot water heating apparatus particularly suitable for the whole building heating using the hot water convector or the hot water radiator. It aims to provide a method.

本発明は、上記目的を達するため、熱源機で加熱した温水を温水暖房端末器へ循環させて住宅の暖房を行う温水暖房装置において、暖房出力を設定室温Ｔｓと外気温度Ｔａとの差で除した住宅暖房係数Ｑと、必要暖房出力Ｗ１とに基づく目標温水往き温度Ｔｏｓの二元マトリクス図を予め実験で求めて記憶しておき、暖房運転開始後に温水温度が安定した時点で、温水往き温度Ｔｏから温水戻り温度Ｔｉを減じて温水循環流量Ｆを乗じた値を設定室温Ｔｓから外気温度Ｔａを減じた値で除して住宅暖房係数Ｑの値を算出記憶し、この住宅暖房係数Ｑに現在の設定室温Ｔｓと外気温度Ｔａとの差を乗じて必要暖房出力Ｗ１を算出すると共に、前記住宅暖房係数Ｑと前記必要暖房出力Ｗ１とから前記二元マトリクス図を参照して目標温水往き温度Ｔｏｓを再設定するようにした。 In order to achieve the above object, the present invention provides a hot water heating apparatus for heating a house by circulating hot water heated by a heat source device to a hot water heating terminal, and dividing the heating output by the difference between the set room temperature Ts and the outside air temperature Ta. was and residential heating factor Q, is stored in search in advance by experiments a dual matrix view of the target hot water forward temperature Tos based on the required heating output W1, when the hot water temperature after the start the heating operation is stable, temperature water forward The value obtained by subtracting the hot water return temperature Ti from the temperature To and multiplying by the hot water circulation flow rate F is divided by the value obtained by subtracting the outside air temperature Ta from the set room temperature Ts, and the value of the house heating coefficient Q is calculated and stored. The required heating output W1 is calculated by multiplying the difference between the current set room temperature Ts and the outside air temperature Ta, and the target hot water flow is made from the residential heating coefficient Q and the required heating output W1 with reference to the binary matrix diagram. temperature It was to re-set the os.

また、請求項２では、前記目標温水往き温度Ｔｏｓを再設定した後に、温水温度が安定した時点で温水往き温度Ｔｏから温水戻り温度Ｔｉを減じて温水循環流量Ｆを乗じて実際の暖房出力Ｗ２を算出し、この実際の暖房出力Ｗ２と、前記目標温水往き温度Ｔｏｓを再設定する前の前記必要暖房出力Ｗ１とを比較して、比較結果に基づき前記目標温水往き温度Ｔｏｓを増減補正するようにした。 Further, in claim 2, after resetting the target hot water going temperature Tos, when the hot water temperature becomes stable , the hot water returning temperature Ti is subtracted from the hot water going temperature To and multiplied by the hot water circulation flow rate F to obtain the actual heating output W2. calculates, and this actual heating output W2, the by comparing the required heating output W1 before resetting the target hot water forward temperature Tos, to increase or decrease correcting the target hot water forward temperature Tos based on the comparison result I made it.

また、請求項１または２記載の方法において、前記温水循環流量Ｆは初期設定された値を用いるようにした。   In the method according to claim 1 or 2, the warm water circulation flow rate F is set to an initial value.

また、請求項１または２記載の方法において、前記温水循環流量Ｆは、前記熱源機の加熱量に所定の熱交換効率を乗じた値を温水往き温度Ｔｏと温水戻り温度Ｔｉの差で除して算出するようにした。   3. The method according to claim 1, wherein the hot water circulation flow rate F is obtained by dividing a value obtained by multiplying a heating amount of the heat source unit by a predetermined heat exchange efficiency by a difference between the hot water going temperature To and the hot water return temperature Ti. To calculate.

また、請求項１〜４の何れか一項に記載の方法において、前記熱源機として、圧縮機と冷媒−水熱交換器と減圧手段と空気熱交換器を有したヒートポンプ式加熱手段を用いた。 Moreover, in the method as described in any one of Claims 1-4, the heat pump type heating means which has a compressor, a refrigerant | coolant-water heat exchanger, the pressure reduction means, and the air heat exchanger was used as the said heat source machine. .

以上の制御方法とすることで、暖房負荷の増減に適切に対応して簡単な演算で目標温水往き温度Ｔｏｓをできるだけ低下させて熱ロスを減らすと共に、室温を適切に制御することができるようになった。   By adopting the above control method, it is possible to appropriately reduce the heat loss by reducing the target hot water going-out temperature Tos as much as possible by a simple calculation corresponding to the increase and decrease of the heating load, and to control the room temperature appropriately. became.

次に、本発明の一実施形態であるヒートポンプ式の貯湯式給湯暖房装置について、図面に基づいて説明する。
１は湯水を貯湯する貯湯タンク、２は貯湯タンク１底部に接続された給水管、３は貯湯タンク１上部に接続された給湯管、４は貯湯タンク１内の湯水を循環加熱するヒートポンプ式加熱手段、５は貯湯タンク１底部とヒートポンプ式加熱手段４の入水側を接続するＨＰ往き管６とヒートポンプ式加熱手段４の出湯側と貯湯タンク１上部とを接続するＨＰ戻り管７から構成されるヒーポン循環回路である。 Next, a heat pump type hot water storage hot water supply and heating apparatus according to an embodiment of the present invention will be described with reference to the drawings.
1 is a hot water storage tank for storing hot water, 2 is a water supply pipe connected to the bottom of the hot water storage tank 1, 3 is a hot water supply pipe connected to the upper part of the hot water storage tank 1, and 4 is a heat pump type heating that circulates and heats hot water in the hot water storage tank 1 Means 5 comprises an HP forward pipe 6 connecting the bottom of the hot water storage tank 1 and the water inlet side of the heat pump type heating means 4, and an HP return pipe 7 connecting the hot water side of the heat pump type heating means 4 and the upper part of the hot water storage tank 1. It is a heat-pump circuit.

８は温水コンベクターや温水ラジエーター等の温水を循環させて暖房を行うための温水暖房端末器、９は貯湯タンク１内の湯またはヒートポンプ式加熱手段４で加熱した湯を循環させて温水暖房端末器８を循環する二次側暖房循環水を加熱するための暖房用熱交換器、１０は温水暖房端末器８と暖房用熱交換器９とに暖房循環水を循環させる二次側循環回路、１１は二次側循環回路１０に設けられた二次側循環ポンプである。   8 is a hot water heating terminal for heating by circulating hot water such as a hot water convector or a hot water radiator, and 9 is a hot water heating terminal for circulating hot water in the hot water storage tank 1 or hot water heated by the heat pump heating means 4. A heating heat exchanger for heating the secondary side heating circulating water circulating in the heater 8, a secondary side circulation circuit for circulating the heating circulating water to the hot water heating terminal 8 and the heating heat exchanger 9; Reference numeral 11 denotes a secondary circulation pump provided in the secondary circulation circuit 10.

ここで、前記複数の温水暖房端末器８は温水往きヘッダー１２と温水戻りヘッダー１３によって二次側循環回路１０に並列に接続されて住宅内の必要な箇所に配置されていると共に、各温水暖房端末器８の温水出入口には、雰囲気温度に応じて温水暖房端末器８内部へ流通する温水流量を調整するためのサーモバルブ１４およびサーモヘッド１５が設けられ、温水暖房端末器８の設置されている雰囲気温度がサーモヘッド１５で設定された温度になるようにサーモバルブ１４の開度が調整される。   Here, the plurality of hot water heating terminals 8 are connected in parallel to the secondary side circulation circuit 10 by a hot water going-out header 12 and a hot water return header 13 and arranged at necessary places in the house, and each hot water heating The hot water inlet / outlet of the terminal 8 is provided with a thermo valve 14 and a thermo head 15 for adjusting the flow rate of the hot water flowing into the hot water heating terminal 8 according to the ambient temperature, and the hot water heating terminal 8 is installed. The opening degree of the thermo valve 14 is adjusted so that the ambient temperature becomes the temperature set by the thermo head 15.

１６は暖房用熱交換器９に湯を供給するための熱交往き管１７と暖房用熱交換器９を流出した湯を貯湯タンク１の下部へ戻すための熱交戻り管１８を備えた一次側循環回路、１９は一次側循環回路に設けられた一次側循環ポンプ、２０はＨＰ戻り管７と熱交往き管１１と接続した位置に設けられた分配弁で、ヒートポンプ式加熱手段４で加熱した湯を暖房用熱交換器９と貯湯タンク１とに任意の割合で分流するものである。   16 is a primary unit provided with a heat exchange pipe 17 for supplying hot water to the heating heat exchanger 9 and a heat exchange return pipe 18 for returning the hot water flowing out of the heating heat exchanger 9 to the lower part of the hot water storage tank 1. The side circulation circuit, 19 is a primary side circulation pump provided in the primary side circulation circuit, and 20 is a distribution valve provided at a position connected to the HP return pipe 7 and the heat transfer pipe 11, and is heated by the heat pump heating means 4 The hot water is diverted to the heating heat exchanger 9 and the hot water storage tank 1 at an arbitrary ratio.

２１は暖房用熱交換器９の一次側の入口側に設けられ一次側入口温度Ｔ１ｉを検出する一次側入口温度センサ、２２は一次側の出口側に設けられ一次側出口温度Ｔ１ｏを検出する一次側出口温度センサ、２３は二次側の入口側に設けられて温水暖房端末器９からの戻り温度である二次側入口温度Ｔｉを検出する二次側入口温度センサ、２４は二次側の出口側に設けられて温水暖房端末器９への往き温度である二次側出口温度Ｔｏを検出する二次側出口温度センサ、２５は二次側全体の温水循環流量Ｆを検出する流量センサである。   21 is a primary side inlet temperature sensor that is provided on the primary inlet side of the heating heat exchanger 9 and detects the primary side inlet temperature T1i, and 22 is a primary side that is provided on the primary side outlet side and detects the primary side outlet temperature T1o. The side outlet temperature sensor 23 is provided on the secondary side inlet side to detect the secondary side inlet temperature Ti which is the return temperature from the hot water heating terminal 9, and 24 is the secondary side temperature sensor. A secondary-side outlet temperature sensor 25 that is provided on the outlet side and detects a secondary-side outlet temperature To that is a temperature going to the hot water heating terminal 9, and 25 is a flow sensor that detects a hot water circulation flow rate F of the entire secondary side. is there.

次に、前記ヒートポンプ式加熱手段４について詳細に説明すると、２６は冷媒を圧縮して高圧にする圧縮機、２７は冷媒と水との間で熱交換させる冷媒−水熱交換器、２８は開度調整可能な電子膨張弁よりなる温度低下した冷媒を減圧する減圧手段、２９は低温低圧の冷媒と空気とを熱交換させて蒸発させる空気熱交換器、３０は空気熱交換器２９に空気を強制的に送る送風機であり、これらによってヒートポンプサイクル３１を構成している。   Next, the heat pump type heating means 4 will be described in detail. 26 is a compressor that compresses the refrigerant to a high pressure, 27 is a refrigerant-water heat exchanger that exchanges heat between the refrigerant and water, and 28 is open. Decompressing means for depressurizing the temperature-reduced refrigerant comprising an electronic expansion valve capable of adjusting the temperature, 29 is an air heat exchanger that evaporates by heat-exchanging the low-temperature and low-pressure refrigerant and air, and 30 is the air heat exchanger 29 The blower is forcibly sent, and the heat pump cycle 31 is constituted by these.

３２はヒーポン循環回路５の途中に設けられたヒーポン循環ポンプ、３３は外気温度Ｔａを検出する外気温度センサ、３４は冷媒−水熱交換器２７の水入口側に設けられ入水温度Ｔｈｐｉを検出するヒーポン入水温度センサ、３５は冷媒−水熱交換器２７の水出口側に設けら出湯温度Ｔｈｐｏを検出するヒーポン出湯温度センサである。   32 is a heat pump circulation pump provided in the middle of the heat pump circulation circuit 5, 33 is an outside air temperature sensor for detecting the outside air temperature Ta, and 34 is provided on the water inlet side of the refrigerant-water heat exchanger 27 to detect the incoming water temperature Thpi. A heat pump incoming water temperature sensor 35 is a heat pump hot water temperature sensor provided on the water outlet side of the refrigerant-water heat exchanger 27 for detecting the hot water temperature Thpo.

そして、３６は貯湯タンク１の側面上下に複数設けられ貯湯タンク１内の貯湯温度を検出する貯湯温度センサ、３７は暖房運転の指示を行う運転スイッチ３８と全館の設定温度を設定する温度設定スイッチ３９と温度表示器４０を備えると共に、装置全体の初期設定値の入力を行うことが可能な暖房リモコン、４１は各センサの検出値が入力されて演算を行い各アクチュエータの作動を制御する制御装置で、試験等によって決められた各種のデータが設定記憶されているものである。   A plurality of hot water storage sensors 36 are provided on the upper and lower sides of the hot water storage tank 1 to detect the hot water storage temperature in the hot water storage tank 1, 37 is an operation switch 38 for instructing heating operation, and a temperature setting switch for setting the set temperature of the entire building. 39 and a temperature indicator 40, and a heating remote controller 41 capable of inputting initial set values for the entire apparatus, and 41 is a control device for controlling the operation of each actuator by calculating the values detected by the sensors. Thus, various data determined by a test or the like are set and stored.

次に、本発明のヒートポンプ式の貯湯式給湯暖房装置の作動について説明する。
まず、深夜時間帯になると、制御装置４１は、ヒートポンプ式加熱手段４とヒーポン循環ポンプ３２を作動し、貯湯タンク１下部から取り出した水を加熱して貯湯タンク１上部へ戻すようにして貯湯運転を行う。このとき、分配弁２０は貯湯タンク１側を全開として沸き上げた温水が全て貯湯タンク１の上部から戻るようにしている。 Next, the operation of the heat pump type hot water storage type hot water supply and heating apparatus of the present invention will be described.
First, at midnight, the control device 41 operates the heat pump heating means 4 and the heat pump circulation pump 32 to heat the water taken out from the lower part of the hot water storage tank 1 and return it to the upper part of the hot water storage tank 1. I do. At this time, the distribution valve 20 fully opens the hot water storage tank 1 side so that all hot water boiled up returns from the upper part of the hot water storage tank 1.

そして、蛇口（図示せず）が開かれると、給水管２から市水が貯湯タンク１底部に流入し、貯湯タンク１上部から湯が給湯管３を介して蛇口から給湯され給湯運転が行われるものである。   When the faucet (not shown) is opened, city water flows from the water supply pipe 2 into the bottom of the hot water storage tank 1, hot water is supplied from the upper part of the hot water storage tank 1 through the hot water supply pipe 3, and a hot water supply operation is performed. Is.

次に、暖房運転を行う際の作動について説明する。暖房運転の要求があると、制御装置４１は、ヒートポンプ式加熱手段４とヒーポン循環ポンプ３２と一次側循環ポンプ１９を作動させると共に、二次側循環ポンプ１１を一定の能力で作動させる。このとき、分配弁２０は暖房用熱交換器９側を全開とする。これにより、一次側では貯湯タンク１の底部からの低温水がヒートポンプ式加熱手段４で加熱され、加熱された高温水が暖房用熱交換器９へ流通し、温度低下した温水が貯湯タンク１の下部へ戻されると共に、二次側では暖房用熱交換器９で熱交換して加熱された暖房循環水が温水暖房端末器８へ循環して暖房を行い、温度低下した暖房循環水が再度暖房用熱交換器９へ循環する。   Next, the operation | movement at the time of performing heating operation is demonstrated. When there is a request for the heating operation, the control device 41 operates the heat pump type heating means 4, the heat pump circulation pump 32, and the primary side circulation pump 19, and activates the secondary side circulation pump 11 with a certain capacity. At this time, the distribution valve 20 fully opens the heating heat exchanger 9 side. Thereby, on the primary side, the low-temperature water from the bottom of the hot water storage tank 1 is heated by the heat pump heating means 4, the heated high-temperature water flows to the heating heat exchanger 9, and the hot water whose temperature has decreased is stored in the hot water storage tank 1. While returning to the lower part, on the secondary side, the heated circulating water heated by exchanging heat in the heating heat exchanger 9 is circulated to the hot water heating terminal 8 for heating, and the heated circulating water whose temperature has decreased is heated again. It circulates to the heat exchanger 9 for use.

このとき、二次側出口温度センサ２４が検出する温水往き温度Ｔｏが後述する二次側の目標温水往き温度Ｔｏｓとなるように一次側の加熱能力が制御される。本実施形態の場合は、ヒートポンプ式加熱手段４の加熱能力を増減することで温水往き温度Ｔｏを制御しているものである。   At this time, the heating capacity on the primary side is controlled so that the warm water going temperature To detected by the secondary side outlet temperature sensor 24 becomes the secondary target hot water going temperature Tos described later. In the case of this embodiment, the warm water going-to temperature To is controlled by increasing or decreasing the heating capacity of the heat pump heating means 4.

ここで、前記制御装置４１は、前記目標温水往き温度Ｔｏｓ（℃）を決定する方法のプログラムが記憶されており、暖房出力（Ｗ）を設定室温Ｔｓ（℃）と外気温度Ｔａ（℃）との差で除した値（Ｗ／Ｋ）と、暖房対象の住宅の暖房に必要な熱量である必要暖房出力Ｗ１（Ｗ）とに基づく目標温水往き温度Ｔｏｓの二元マトリクス図（図２に示す）を予め実験等により求めて記憶しているものである。ここで、暖房出力を設定室温Ｔｓと外気温度Ｔａとの差で除した値を住宅暖房係数Ｑと呼ぶ。   Here, the control device 41 stores a program of a method for determining the target hot water going-out temperature Tos (° C.), and sets the heating output (W) to the set room temperature Ts (° C.) and the outside air temperature Ta (° C.). Binary matrix diagram of the target hot water going-out temperature Tos based on the value (W / K) divided by the difference between and the required heating output W1 (W) that is the amount of heat necessary for heating the house to be heated (shown in FIG. 2) ) Is obtained in advance by experiments or the like and stored. Here, a value obtained by dividing the heating output by the difference between the set room temperature Ts and the outside air temperature Ta is referred to as a house heating coefficient Q.

ここで、この二元マトリクス図は、住宅暖房係数Ｑを一定とすると暖房出力が大きくなるほど目標温水往き温度Ｔｏｓが高くなり、暖房出力を一定とすると住宅暖房係数Ｑが小さくなるほど目標温水温度Ｔｏｓが高くなる傾向を有している。   Here, in this binary matrix diagram, the target warm water going-out temperature Tos increases as the heating output increases when the house heating coefficient Q is constant, and the target hot water temperature Tos decreases as the house heating coefficient Q decreases when the heating output is constant. It tends to be higher.

次に、前記制御装置４１による前記目標温水往き温度Ｔｏｓの決定方法について、図３および図４に示すフローチャートに基づいて説明する。
まずは、図３のフローチャートに示すように、初回の暖房運転が開始されると（ステップＳ１）、ステップＳ２で目標温水往き温度Ｔｏｓを所定の一定温度（例えば６０℃）に設定し、二次側出口温度センサ２４が検出する温水往き温度Ｔｏが前記所定の一定温度となるように一次側の加熱能力を制御する。 Next, a method for determining the target warm water going-out temperature Tos by the control device 41 will be described based on the flowcharts shown in FIGS. 3 and 4.
First, as shown in the flowchart of FIG. 3, when the first heating operation is started (step S1), the target hot water going-out temperature Tos is set to a predetermined constant temperature (for example, 60 ° C.) in step S2, and the secondary side The heating capacity on the primary side is controlled so that the warm water going temperature To detected by the outlet temperature sensor 24 becomes the predetermined constant temperature.

そして、温水往き温度Ｔｏ（℃）および温水戻り温度Ｔｉ（℃）が変動少なく安定したことを二次側入口温度センサ２３および二次側出口温度センサ２４で検知すると（ステップＳ３でＹｅｓ）、ステップＳ４では、温水往き温度Ｔｏから温水戻り温度Ｔｉを減じて温水循環流量Ｆ（ｌ／ｍｉｎ）を乗じた値を設定室温Ｔｓから外気温度Ｔａを減じた値で除して住宅暖房係数Ｑの値を算出する。   Then, when the secondary side inlet temperature sensor 23 and the secondary side outlet temperature sensor 24 detect that the warm water return temperature To (° C.) and the warm water return temperature Ti (° C.) are stable with little fluctuation (Yes in step S3), step In S4, the value of the house heating coefficient Q is obtained by dividing the value obtained by subtracting the warm water return temperature Ti from the warm water return temperature To and multiplying by the warm water circulation flow rate F (l / min) by the value obtained by subtracting the outside air temperature Ta from the set room temperature Ts. Is calculated.

ステップＳ５では、前記ステップＳ４で算出した住宅暖房係数Ｑに設定室温Ｔｓから外気温度Ｔｓを減じた値を乗じて、現在の必要暖房出力Ｗ１の値を算出し、ステップＳ６では、前記ステップＳ４で算出した住宅暖房係数Ｑの値と前記ステップＳ５で算出した必要暖房出力Ｗ１の値から制御手段４１に記憶されている前記二元マトリクス図に基づいて目標温水往き温度Ｔｏｓを決定し、そして温水往き温度Ｔｏがこの目標温水往き温度Ｔｏｓになるように一次側の加熱能力が制御される。   In step S5, the value of the current required heating output W1 is calculated by multiplying the house heating coefficient Q calculated in step S4 by the value obtained by subtracting the outside air temperature Ts from the set room temperature Ts. In step S6, in step S4 Based on the calculated value of the house heating coefficient Q and the value of the required heating output W1 calculated in step S5, the target hot water going-out temperature Tos is determined based on the binary matrix diagram stored in the control means 41, and the hot water going-out The heating capability on the primary side is controlled so that the temperature To becomes the target hot water going-out temperature Tos.

そして、温水往き温度Ｔｏおよび温水戻り温度Ｔｉが変動少なく安定したことを検知すると（ステップＳ７でＹｅｓ）、ステップＳ８では、温水往き温度Ｔｏから温水戻り温度Ｔｉを減じて温水循環流量Ｆを乗じて、現在の実暖房出力Ｗ２（Ｗ）の値を算出する。   When it is detected that the warm water return temperature To and the warm water return temperature Ti are stable with little fluctuation (Yes in step S7), in step S8, the warm water return temperature Ti is subtracted from the warm water return temperature To and multiplied by the warm water circulation flow rate F. The current actual heating output W2 (W) is calculated.

次に、ステップＳ９では、前記ステップＳ５で算出した必要暖房出力Ｗ１と前記ステップＳ８で算出した実暖房出力Ｗ２との比較を行い、必要暖房出力Ｗ１の方が実暖房出力Ｗ２よりも小さい場合は、ステップＳ１０で目標温水往き温度Ｔｏｓを低下させる補正を行い、必要暖房出力Ｗ１の方が実暖房出力Ｗ２よりも大きい場合は、ステップ１１で目標温水往き温度Ｔｏｓを増加させる補正を行うようにしている。   Next, in step S9, the required heating output W1 calculated in step S5 is compared with the actual heating output W2 calculated in step S8, and when the required heating output W1 is smaller than the actual heating output W2. In step S10, correction for decreasing the target warm water going temperature Tos is performed. When the required heating output W1 is larger than the actual heating output W2, correction for increasing the target hot water going temperature Tos is performed in step 11. Yes.

次に、図４のフローチャートに示すように、二回目以降の暖房運転が開始されると（ステップＳ１２）、前回までの暖房運転時に算出記憶している住宅暖房係数Ｑに設定室温Ｔｓから外気温度Ｔｓを減じた値を乗じて、現在の必要暖房出力Ｗ１の値を算出し（ステップＳ１３）、ステップＳ１４では、前記住宅暖房係数Ｑの値と前記ステップＳ１３で算出した必要暖房出力Ｗ１の値から制御手段４１に記憶されている前記二元マトリクス図に基づいて目標温水往き温度Ｔｏｓを決定し、そして温水往き温度Ｔｏがこの目標温水往き温度Ｔｏｓになるように一次側の加熱能力を制御する。   Next, as shown in the flowchart of FIG. 4, when the second and subsequent heating operations are started (step S12), the house heating coefficient Q calculated and stored during the previous heating operation is changed from the set room temperature Ts to the outside air temperature. The value of the current required heating output W1 is calculated by multiplying the value obtained by subtracting Ts (step S13). In step S14, the value of the residential heating coefficient Q and the value of the required heating output W1 calculated in step S13 are calculated. Based on the binary matrix diagram stored in the control means 41, the target warm water going temperature Tos is determined, and the primary side heating capacity is controlled so that the hot water going temperature To becomes the target hot water going temperature Tos.

そして、温水往き温度Ｔｏおよび温水戻り温度Ｔｉが変動少なく安定したことを検知すると（ステップＳ１５でＹｅｓ）、ステップＳ１６では、温水往き温度Ｔｏから温水戻り温度Ｔｉを減じて温水循環流量Ｆを乗じた値を設定室温Ｔｓから外気温度Ｔａを減じた値で除して住宅暖房係数Ｑの値を算出して更新する。   When it is detected that the warm water return temperature To and the warm water return temperature Ti are stable with little fluctuation (Yes in Step S15), in Step S16, the warm water return temperature Ti is subtracted from the warm water return temperature To and multiplied by the warm water circulation flow rate F. The value is divided by the value obtained by subtracting the outside air temperature Ta from the set room temperature Ts to calculate and update the value of the house heating coefficient Q.

ステップＳ１７では、前記ステップＳ１６で算出した住宅暖房係数Ｑに設定室温Ｔｓから外気温度Ｔｓを減じた値を乗じて、現在の必要暖房出力Ｗ１の値を算出して更新し、ステップＳ１８では、前記ステップＳ１６で算出した住宅暖房係数Ｑの値と前記ステップＳ１７で算出した必要暖房出力Ｗ１の値から制御手段４１に記憶されている前記二元マトリクス図に基づいて目標温水往き温度Ｔｏｓを決定し、そして温水往き温度Ｔｏがこの目標温水往き温度Ｔｏｓになるように一次側の加熱能力が制御される。   In step S17, the value of the current required heating output W1 is calculated and updated by multiplying the house heating coefficient Q calculated in step S16 by the value obtained by subtracting the outside air temperature Ts from the set room temperature Ts. In step S18, the value is updated. Based on the binary matrix diagram stored in the control means 41 from the value of the house heating coefficient Q calculated in step S16 and the value of the required heating output W1 calculated in step S17, the target hot water going-out temperature Tos is determined, Then, the heating capability on the primary side is controlled so that the warm water going temperature To becomes the target hot water going temperature Tos.

そして、温水往き温度Ｔｏおよび温水戻り温度Ｔｉが変動少なく安定したことを検知すると（ステップＳ１９でＹｅｓ）、ステップＳ２０では、温水往き温度Ｔｏから温水戻り温度Ｔｉを減じて温水循環流量Ｆを乗じて、現在の実暖房出力Ｗ２の値を算出する。   When it is detected that the warm water return temperature To and the warm water return temperature Ti are stable with little fluctuation (Yes in step S19), in step S20, the warm water return temperature Ti is subtracted from the warm water return temperature To and multiplied by the warm water circulation flow rate F. Then, the current value of the actual heating output W2 is calculated.

次に、ステップＳ２１では、前記ステップＳ１７で算出した必要暖房出力Ｗ１と前記ステップＳ２０で算出した実暖房出力Ｗ２との比較を行い、必要暖房出力Ｗ１の方が実暖房出力Ｗ２よりも小さい場合は、ステップＳ２２で目標温水往き温度Ｔｏｓを低下させる補正を行い、必要暖房出力Ｗ１の方が実暖房出力Ｗ２よりも大きい場合は、ステップ２３で目標温水往き温度Ｔｏｓを増加させる補正を行うようにしている。   Next, in step S21, the required heating output W1 calculated in step S17 is compared with the actual heating output W2 calculated in step S20, and when the required heating output W1 is smaller than the actual heating output W2. In step S22, a correction for decreasing the target warm water going temperature Tos is performed. If the required heating output W1 is larger than the actual heating output W2, a correction for increasing the target hot water going temperature Tos is performed in step 23. Yes.

このように、目標温水往き温度Ｔｏｓが必要暖房出力Ｗ１と住宅暖房係数Ｑに応じて適切に設定されるので、温水往き温度Ｔｏをできるだけ低下させて熱ロスを減らすことができ、ヒートポンプ式加熱手段４で温水を加熱する際のＣＯＰ（加熱効率）を向上させることができると共に、室温を適切に制御することができ、温水コンベクターや温水ラジエーターを用いた全館暖房に特に好適な温水暖房装置の制御方法を提供することができる。   Thus, since the target warm water going temperature Tos is appropriately set according to the required heating output W1 and the house heating coefficient Q, the hot water going temperature To can be reduced as much as possible to reduce heat loss, and the heat pump heating means 4 can improve the COP (heating efficiency) at the time of heating hot water, can control the room temperature appropriately, and is a particularly suitable hot water heating device for whole building heating using a hot water convector or a hot water radiator A control method can be provided.

また、住宅暖房係数Ｑを特別な操作や入力を必要とすることなく、設置条件に応じて自動的に算出することができるため、住宅性能や住宅面積、温水暖房端末器の種類や数が不明な場合であっても、実際の温水温度から住宅暖房係数Ｑを算出することができ、状況に合わせた暖房出力と、最適な目標温水往き温度Ｔｏｓを設定することができるため、無駄のない暖房制御が実現できる。しかも、暖房運転を行う度に住宅暖房係数Ｑを算出し直すので、住宅の暖房条件の変化に対応することが可能となった。   In addition, since the house heating coefficient Q can be automatically calculated according to the installation conditions without requiring any special operation or input, the housing performance, the area of the house, and the type and number of hot water heating terminals are unknown. Even in such a case, the house heating coefficient Q can be calculated from the actual hot water temperature, and the heating output according to the situation and the optimum target hot water going-out temperature Tos can be set. Control can be realized. Moreover, since the house heating coefficient Q is recalculated every time the heating operation is performed, it becomes possible to cope with changes in the heating conditions of the house.

さらに、必要暖房出力Ｗ１と実暖房出力Ｗ２とを比較して目標温水往き温度Ｔｏｓを調整することによって、より精度よく室温を制御可能な最適な目標温水往き温度Ｔｏｓを設定することができる。   Further, by comparing the required heating output W1 and the actual heating output W2 and adjusting the target warm water going temperature Tos, it is possible to set the optimum target hot water going temperature Tos that can control the room temperature more accurately.

なお、本実施形態においては、流量センサ２５にて実際の温水循環流量Ｆを検出するようにしたが、流量センサ２５を用いずに、設計流量を暖房リモコン３７から入力設定し、設計流量を温水循環流量Ｆとして用いるようにしてもよい。   In the present embodiment, the actual hot water circulation flow rate F is detected by the flow rate sensor 25. However, the design flow rate is input and set from the heating remote controller 37 without using the flow rate sensor 25, and the design flow rate is set to warm water. It may be used as the circulation flow rate F.

また、前記温水循環流量Ｆは、前記ヒートポンプ式加熱手段４の加熱量に所定の熱交換効率を乗じた値を温水往き温度Ｔｏと温水戻り温度Ｔｉの差で除して算出するようにしてもよい。ここで、ヒートポンプ式加熱手段４の加熱量は、暖房用熱交換器９の一次側の一次側入口温度センサ２１で検出する一次側入口温度Ｔｉから一次側出口温度センサ２２で検出する一次側出口温度Ｔｏを減じた値に一次側循環ポンプ１９の作動回転数に応じた流量を乗じて求めるようにしてもよい。   Further, the hot water circulation flow rate F may be calculated by dividing a value obtained by multiplying the heating amount of the heat pump type heating means 4 by a predetermined heat exchange efficiency by the difference between the hot water going temperature To and the hot water return temperature Ti. Good. Here, the heating amount of the heat pump type heating means 4 is the primary side outlet temperature detected by the primary side outlet temperature sensor 22 from the primary side inlet temperature Ti detected by the primary side inlet temperature sensor 21 of the primary side of the heating heat exchanger 9. The value obtained by subtracting the temperature To may be obtained by multiplying the flow rate according to the operating rotational speed of the primary circulation pump 19.

また、二次側の温水を加熱する構成をヒートポンプ式加熱手段４による間接加熱としたが、貯湯タンク１の貯湯温水による間接加熱や、ヒートポンプ式加熱手段４による直接加熱や、ガス燃料あるいは石油燃料の燃焼による直接加熱としてもよいもので、温水暖房端末器８へ循環させる温水の温水往き温度Ｔｉが目標温水往き温度Ｔｏｓになるように制御できる加熱手段であればよいものである。   Moreover, although the structure which heats the secondary side warm water was indirect heating by the heat pump type heating means 4, indirect heating by the hot water storage hot water of the hot water storage tank 1, direct heating by the heat pump type heating means 4, gas fuel or petroleum fuel Any heating means can be used as long as it can be controlled so that the warm water warming temperature Ti circulated to the warm water heating terminal 8 becomes the target warm water warming temperature Tos.

また、図２に示した二元マトリクス図の右下の空白欄は、本一実施形態の貯湯式給湯暖房装置の暖房出力の限度を超えるため空白としており、左上の空白欄は、目標温水往き温度Ｔｏｓが低く、温水暖房端末器８が暖房能力を発揮できなくなるため空白としている。しかし、右下の空白欄には全て６０℃（本実施形態における目標温水往き温度Ｔｏｓの上限）を入力し、暖房出力の限度まで作動させるようにしてもよく、左上の空白欄には全て４０℃を入力し、暖房運転を間欠的に行うようにして低い必要暖房出力Ｗ１に合わせるように暖房能力を調節するようにすることもできる。   In addition, the blank column at the lower right of the binary matrix diagram shown in FIG. 2 is blank because it exceeds the limit of the heating output of the hot water storage hot-water heater of this embodiment, and the blank column at the upper left is the target hot water going-out. Since the temperature Tos is low and the hot water heating terminal 8 cannot exhibit the heating capability, it is left blank. However, 60 ° C. (upper limit of the target warm water going-out temperature Tos in the present embodiment) may be input in the lower right blank column, and may be operated up to the limit of the heating output. It is also possible to adjust the heating capacity so as to match the low required heating output W1 by inputting the ° C and intermittently performing the heating operation.

本発明の一実施形態の概略構成図。The schematic block diagram of one Embodiment of this invention. 住宅暖房係数Ｑと必要暖房出力Ｗ１とに基づく目標温水往き温度の二元マトリクス図。The binary matrix figure of the target warm water going-out temperature based on the house heating coefficient Q and the required heating output W1. 同一実施形態の初回暖房運転時の作動を説明するためのフローチャート。The flowchart for demonstrating the action | operation at the time of the first heating operation of the same embodiment. 同一実施形態の暖房運転時の作動を説明するためのフローチャート。The flowchart for demonstrating the action | operation at the time of the heating operation of the same embodiment.

符号の説明Explanation of symbols

４ ヒートポンプ式加熱手段（熱源機）
８ 温水暖房端末器
４１ 制御装置 4 Heat pump type heating means (heat source machine)
8 Hot water heating terminal 41 Control device

Claims (5)

熱源機で加熱した温水を温水暖房端末器へ循環させて住宅の暖房を行う温水暖房装置において、暖房出力を設定室温Ｔｓと外気温度Ｔａとの差で除した住宅暖房係数Ｑと、必要暖房出力Ｗ１とに基づく目標温水往き温度Ｔｏｓの二元マトリクス図を予め実験で求めて記憶しておき、暖房運転開始後に温水温度が安定した時点で、温水往き温度Ｔｏから温水戻り温度Ｔｉを減じて温水循環流量Ｆを乗じた値を設定室温Ｔｓから外気温度Ｔａを減じた値で除して住宅暖房係数Ｑの値を算出記憶し、この住宅暖房係数Ｑに現在の設定室温Ｔｓと外気温度Ｔａとの差を乗じて必要暖房出力Ｗ１を算出すると共に、前記住宅暖房係数Ｑと前記必要暖房出力Ｗ１とから前記二元マトリクス図を参照して目標温水往き温度Ｔｏｓを再設定するようにしたことを特徴とする温水暖房装置の制御方法。 In a hot water heating apparatus for heating a house by circulating hot water heated by a heat source device to a hot water heating terminal, the heating ratio is divided by the difference between the set room temperature Ts and the outside air temperature Ta, and the required heating output stores are acquired by experiments in advance a dual matrix view of the target hot water forward temperature Tos-based and W1, when the hot water temperature after the start the heating operation is stable, by subtracting the returning hot temperature Ti from the warm water forward temperature to The value obtained by multiplying the value obtained by multiplying the hot water circulation flow rate F by the value obtained by subtracting the outside air temperature Ta from the set room temperature Ts is calculated and stored, and the current set room temperature Ts and the outside air temperature Ta are stored in the house heating coefficient Q. The required heating output W1 is calculated by multiplying the difference with the above, and the target hot water going-out temperature Tos is reset from the house heating coefficient Q and the required heating output W1 with reference to the binary matrix diagram. The method of the hot water heating system according to claim. 前記目標温水往き温度Ｔｏｓを再設定した後に、温水温度が安定した時点で温水往き温度Ｔｏから温水戻り温度Ｔｉを減じて温水循環流量Ｆを乗じて実際の暖房出力Ｗ２を算出し、この実際の暖房出力Ｗ２と、前記目標温水往き温度Ｔｏｓを再設定する前の前記必要暖房出力Ｗ１とを比較して、比較結果に基づき前記目標温水往き温度Ｔｏｓを増減補正するようにしたことを特徴とする請求項１記載の温水暖房装置の制御方法。 After resetting the target hot water going temperature Tos, when the hot water temperature is stabilized , the hot water returning temperature Ti is subtracted from the hot water going temperature To and multiplied by the hot water circulation flow rate F to calculate the actual heating output W2, and the actual heating output W2 is calculated. and heating output W2, by comparing the required heating output W1 before resetting the target hot water forward temperature Tos, characterized in that so as to correct decreasing the target hot water forward temperature Tos based on the comparison result The control method of the hot water heating apparatus of Claim 1. 前記温水循環流量Ｆは初期設定された値を用いるようにしたことを特徴とする請求項１または２記載の温水暖房装置の制御方法。 The method for controlling a hot water heater according to claim 1 or 2, wherein an initial set value is used as the hot water circulation flow rate F. 前記温水循環流量Ｆは、前記熱源機の加熱量に所定の熱交換効率を乗じた値を温水往き温度Ｔｏと温水戻り温度Ｔｉの差で除して算出するようにしたことを特徴とする請求項１または２記載の温水暖房装置の制御方法。 The hot water circulation flow rate F is calculated by dividing a value obtained by multiplying a heating amount of the heat source unit by a predetermined heat exchange efficiency by a difference between the hot water going-out temperature To and the hot water return temperature Ti. Item 3. A method for controlling a hot water heating apparatus according to item 1 or 2. 前記熱源機として、圧縮機と冷媒−水熱交換器と減圧手段と空気熱交換器を有したヒートポンプ式加熱手段を用いていることを特徴とする請求項１〜４の何れか一項に記載の温水暖房装置の制御方法。 As the heat source unit, a compressor and a refrigerant - according to any one of claim 1 to 4, characterized in that by using a heat pump type heating means having a water heat exchanger pressure reducing means and air heat exchanger Method for controlling the hot water heating system.
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