JPH02230028A - Indoor heating apparatus - Google Patents
Indoor heating apparatusInfo
- Publication number
- JPH02230028A JPH02230028A JP4781189A JP4781189A JPH02230028A JP H02230028 A JPH02230028 A JP H02230028A JP 4781189 A JP4781189 A JP 4781189A JP 4781189 A JP4781189 A JP 4781189A JP H02230028 A JPH02230028 A JP H02230028A
- Authority
- JP
- Japan
- Prior art keywords
- heat medium
- temperature
- burner
- thermal medium
- heating
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 57
- 238000007710 freezing Methods 0.000 claims abstract description 21
- 230000008014 freezing Effects 0.000 claims abstract description 21
- 238000009835 boiling Methods 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims description 25
- 230000009979 protective mechanism Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明はバーナにて加熱された熱交換器の熱媒体（水
または不凍液等の液体）を放熱器へポンプで循環して暖
房を行う暖房装置に関する．〈口》従来の技術
従来のこの種の暖房装置は、例えば、実公昭５８−７
２ １ ３号公報に開示されているように、温水ボイラ
の温水を放熱器ヘポンプで循環して暖房を行うものや、
実公昭５８−６１６５号に開示されているように、１台
の湯沸器と複数のファンコンベクター間を夫々独立した
温水循環回路により接続し、夫々の温水循環回路に設け
た自動弁を放熱器側の運転信号に対応して開閉させるこ
とによって暖房が必要とされる放熱器にのみ温水を循環
するようにしたものが知られている．（八》発明が解決
しようとする課題
上述した暖房装置では暖房運転中の放熱器の負荷変動等
に伴って熱媒体循環温度が大きく変動し、負荷の小さい
ときには熱媒体が沸騰する虞れのあることから、熱交換
器内の熱媒体温度に応じてバーナを発停する熱媒体制御
装置が熱源側制御装置に設けられていた．また、暖房運
転の停止中に熱媒体が凍結するのを肪止するため、配管
等の熱媒体温度に応じてバーナや電気ヒーターを作動き
せる保護装置が上述した熱媒体制御装置とは別に設けら
れていた．このため、熱媒体温度を検出するセンサが２
つ必要になるばかりでなく、制御部の回路構成が複雑に
なる欠点があった．この発明は上述した事実に鑑みてな
されたものであり、熱媒体の沸騰防止と凍結防止を共通
の熱媒体温度検出用のセンサを用いて確実に行うことを
目的とする．
この発明では、バーナにて加熱される熱交換器と循環ポ
ンプと放熱器とを環状に接続して熱媒体循環路を形成し
、放熱器側の運転信号によってバーナを発停させるよう
にした暖房装置において、熱媒体循環路の熱媒体温度を
検出するセンサを有し、このセンサの検出温度が沸騰危
険温度以上のときバーナの燃焼を停止させ、かつ、前記
センサの検出温度が凍結危険温度以下のときバーナ等の
熱媒体加熱装置を作動させる保護装置を備えた構成であ
る．
また、この発明では、バーナにて加熱される熱交換器と
循環ポンプと熱媒体供給弁及び放熱器を有する複数の分
岐路とを環状に接続して熱媒体循環路を形成し、放熱器
側の運転信号によってバーナを発停させるとともに、運
転信号に対応する熱媒体供給弁を開放させるようにした
暖房装置において、熱媒体循環路の熱媒体温度を検出す
るセンサを有し、このセンサの検出温度が沸騰危険温度
以上のときバーナの燃焼を停止させ、かつ、前記センサ
の検出温度が凍結危険温度以下のときバーナ等の熱媒体
加熱装置を作動させるとともに、全ての熱媒体供給弁を
開放させる保護装置を備えた構成である．
また、この発明では、請求項２または３の暖房装董にお
いて、熱媒体温度検出用のセンサが熱交換器の熱媒体出
口近くの熱媒体循環路に取付けられている構成である．
《＊》作用
このように構成すると、放熱器側で運転信号を発してい
る暖房運転中には負荷の変動等によって熱媒体温度が沸
騰危険温度以上になるとバーナの運転を停止でき、暖房
運転停止中に熱媒体温度が凍結危険温度以下になると、
バーナ等の熱媒体加熱装置を作動させることができ、熱
媒体の沸騰や凍結による熱媒体循環路の破損を防止でき
るばかりでなく、熱媒体温度検出用のセンサを共用して
保護装置の簡素化を図ることが可能である。Detailed Description of the Invention (a) Industrial Application Field This invention performs heating by circulating the heat medium (liquid such as water or antifreeze) in a heat exchanger heated by a burner to a radiator using a pump. Regarding heating equipment. <Explanation> Conventional technology This type of conventional heating device is, for example,
As disclosed in Publication No. 213, heating is performed by circulating hot water from a hot water boiler to a radiator using a pump,
As disclosed in Japanese Utility Model Publication No. 58-6165, one water heater and multiple fan convectors are connected by independent hot water circulation circuits, and automatic valves installed in each hot water circulation circuit are used as radiators. There is a known system that circulates hot water only to the radiators that require heating by opening and closing in response to operation signals from the side. (8) Problems to be Solved by the Invention In the above-mentioned heating device, the heat medium circulation temperature fluctuates greatly due to changes in the load on the radiator during heating operation, and when the load is small, there is a risk that the heat medium may boil. Therefore, a heat medium control device that starts and stops the burner according to the temperature of the heat medium in the heat exchanger is installed in the heat source side control device.In addition, it is possible to prevent the heat medium from freezing while the heating operation is stopped. In order to prevent this, a protection device that operates the burner or electric heater according to the temperature of the heat medium in the pipes, etc. was provided separately from the above-mentioned heat medium control device.For this reason, two sensors were installed to detect the temperature of the heat medium.
This had the disadvantage of not only requiring one controller, but also complicating the circuit configuration of the control section. This invention was made in view of the above-mentioned facts, and its purpose is to reliably prevent boiling and freezing of a heating medium using a common sensor for detecting the temperature of the heating medium. In this invention, a heat exchanger heated by a burner, a circulation pump, and a radiator are connected in a ring to form a heat medium circulation path, and the burner is started and stopped by an operation signal from the radiator. The apparatus includes a sensor that detects the temperature of the heat medium in the heat medium circulation path, and stops combustion of the burner when the temperature detected by the sensor is above the dangerous boiling temperature, and when the temperature detected by the sensor is below the dangerous freezing temperature. The structure is equipped with a protection device that activates the heat medium heating device such as a burner when In addition, in this invention, a heat exchanger heated by a burner, a circulation pump, a plurality of branch paths having a heat medium supply valve and a radiator are connected in a ring to form a heat medium circulation path, and the heat medium circulation path is formed on the side of the radiator. A heating device that starts and stops a burner and opens a heat medium supply valve corresponding to the operation signal according to the operation signal, has a sensor that detects the temperature of the heat medium in the heat medium circulation path, and detects the temperature of the heat medium in the heat medium circulation path. When the temperature is above the dangerous boiling temperature, the combustion of the burner is stopped, and when the temperature detected by the sensor is below the dangerous freezing temperature, the heat medium heating device such as the burner is operated, and all the heat medium supply valves are opened. This configuration is equipped with a protection device. Further, in the heating device according to the second or third aspect of the present invention, the sensor for detecting the temperature of the heat medium is attached to the heat medium circulation path near the heat medium outlet of the heat exchanger. 《＊》Function With this configuration, during heating operation when the radiator side issues an operation signal, if the heat medium temperature rises above the boiling danger temperature due to changes in load, etc., the burner operation can be stopped, and the heating operation is stopped. When the temperature of the heat medium falls below the freezing danger temperature,
It is possible to operate a heat medium heating device such as a burner, which not only prevents damage to the heat medium circulation path due to boiling or freezing of the heat medium, but also simplifies the protection device by sharing a sensor for detecting the temperature of the heat medium. It is possible to achieve this.
また、請求項２の暖房装置においては、熱媒体供給弁を
個々に開放することなく、熱媒体循環路の隅々まで熱交
換器で加熱された熱媒体を供給して熱媒体の凍結を防止
でき、さらに請求項３の暖房装置においては、熱交換器
で加熱された熱媒体の沸騰危険温度と、暖房運転停止時
における熱媒体の凍結危険温度とを１個のセンサを用い
てそれぞれ的確に検出することが可能である．《へ》実
施例
以下、この発明を図面に示す実施例について説明する．
第１図において、（１》は屋外に設置される熱源機であ
り、熱源１！（１）にはバーナ（２）と、このバーナ《
２》によって加熱される熱交換器（３）と、排気ファン
《４》と、熱媒体タンク（５）と、この熱媒体タンク（
５）に装着きれたラジエータキャップ（６）の圧力調整
弁（７）を介して熱媒体タンク（５）に接続されたリザ
ーブタンク（８》と、循環ポンプ（９）と、熱動弁より
なる常閉の２つの熱媒体供給弁（１０）（１１）と、バ
ーナ（２）に接続されたガス管（１２）と、ガス管（１
２）に設けられた遮断弁（１３）及び比例制御弁（１４
）と、バーナ（２》の近くに設けられた点火装ｅ（１５
）と、熱源側制御装置（１６）とが内蔵されている．ま
た、２つの配管接続口（１７）（１８）、戻り側ヘッダ
ー（１９）、熱交換器ク３）、熱媒体タンク（５）、循
環ポンプ（９）、往き側ヘッダ−（２０）、２つの熱媒
体供給弁（１０）（１１）、及び２つの配管接続口（２
１ ）（２２）が順次配管にて接続され、これらによっ
て熱源機（１）側の熱媒体循環路（Ｃ’）を構成してお
り、熱交換器（３）の熱媒体出口近くの熱媒体循環路（
Ｃ）には熱媒体温度センサ（Ｔｈ）が取付けられている
。また、熱媒体タンク（５）の上部には給液口（２３）
が設けられ、この給液口（２３）には逆止弁（２４）が
内蔵されている。この逆止弁（２４）は矢印方向に圧力
（例えば、０ ． ３ ｋｇ／ｃｍ”以上）がかかると
、ソノ方向ニ熱媒体が流れるのを許容し、かつ、矢印と
反対方向の熱媒体の流れを阻止するものである。（２５
Ａ）（２５Ｂ）はそれぞれ室内に設置されるファンコン
ベクター等の室内機であり、室内機（２５Ａ）（２５Ｂ
）には放熱器（２６Ａ）（２６Ｂ）、送風ファン（２７
Ａ）（２７Ｂ）、室温サーミスタ（２８Ａ＞（２８Ｂ）
，及び室内側制御装置（２９Ａ）（２９Ｂ）が内蔵され
ている。そして、放熱器（２６Ａ）（２６Ｂ）は分岐路
（Ｃｌ）（Ｃ２）を介して熱媒体循環路（Ｃ）に接続さ
れている。In addition, in the heating device of claim 2, the heat medium heated by the heat exchanger is supplied to every corner of the heat medium circulation path without opening the heat medium supply valves individually, thereby preventing the heat medium from freezing. Furthermore, in the heating device of claim 3, the boiling dangerous temperature of the heat medium heated by the heat exchanger and the freezing dangerous temperature of the heat medium when the heating operation is stopped can be accurately determined using one sensor. It is possible to detect it. 《》Example》Examples of this invention shown in the drawings will be explained below. In Figure 1, (1) is a heat source machine installed outdoors, and heat source 1! (1) has a burner (2) and this burner
2》 heat exchanger (3), exhaust fan <<4>>, heat medium tank (5), and this heat medium tank (
Consisting of a reserve tank (8) connected to the heat medium tank (5) via the pressure regulating valve (7) of the radiator cap (6) fully attached to the radiator cap (5), a circulation pump (9), and a thermal valve. Two normally closed heat medium supply valves (10) (11), a gas pipe (12) connected to the burner (2), and a gas pipe (1
2) and a proportional control valve (14) provided in the
) and the ignition device e (15) installed near the burner (2).
) and a heat source side control device (16) are built-in. In addition, two piping connection ports (17) (18), return side header (19), heat exchanger 3), heat medium tank (5), circulation pump (9), outgoing side header (20), 2 one heat medium supply valve (10) (11), and two piping connection ports (2
1) and (22) are sequentially connected by piping, and these constitute the heat medium circulation path (C') on the heat source device (1) side, and the heat medium near the heat medium outlet of the heat exchanger (3) Circulation path (
A heat medium temperature sensor (Th) is attached to C). In addition, there is a liquid supply port (23) at the top of the heat medium tank (5).
A check valve (24) is built into this liquid supply port (23). This check valve (24) allows the heat medium to flow in the opposite direction when pressure (for example, 0.3 kg/cm" or more) is applied in the direction of the arrow, and allows the flow of the heat medium in the opposite direction to the arrow. It prevents the flow. (25
A) (25B) are indoor units such as fan convectors installed indoors, and indoor units (25A) (25B)
) are equipped with radiators (26A) (26B) and blower fans (27
A) (27B), room temperature thermistor (28A>(28B)
, and an indoor control device (29A) (29B) are built-in. The heat radiators (26A) (26B) are connected to the heat medium circulation path (C) via branch paths (Cl) (C2).
第２図は上述した暖房装置の制御部の内部構成を示すも
のであり、室内側制御装置（２９Ａ）（２９Ｂ）は運転
スイッチ（３０Ａ）（３０Ｂ）と、室温サーミスタ（２
８Ａ）（２８Ｂ）が検出した室温と温度設定器（３１Ａ
＞（３１Ｂ＞にて設定された設定温度とを比較し、室温
が設定温度より低いときにサーモスイッチ（３２Ａ）（
３２Ｂ）を才ンにする室温制御回路（３３Ａ）（ ３３
Ｂ）と、運転スイッチ及びサーモスイッチによって通電
が制御される送風ファン（２７Ａ）（２７Ｂ）駆動用の
ファンモータ（３４Ａ）（３４Ｂ）、並びにリレー（３
５Ａ）（３５Ｂ）とから構成されている．
一方、熱源側制御装置（１６）は熱媒体温度センサ（Ｔ
ｈ）の検出温度に応じてオン・オフのサーモ信号を発す
る熱媒体制御装置（３６）と、リレー（３５Ａ）（３５
Ｂ》にて開閉されるリレー接点（３５１Ａ）＜３５１Ｂ
）の接点信号（運転信号）を入力して室内機（２５Ａ）
（ ２５Ｂ）の運転の有無を判別する運転台数判別装置
（３７）と、この運転台数判別装置（３７）が１台以上
の運転信号を判別し、かつ、上述した熱媒体制御装置（
３６）が第１のオン信号を発しているとき、若しくは熱
媒体制御装ｆ！（３６）が第２のオン信号を発している
ときに排気ファン（４）駆動用のファンモータ（３８》
、循環ポンブ（９）、遮断弁（１３）、及び点火装置（
１５》に所定のシーケンスで通電する燃焼制御装置（３
９）と、リレー接点（３５１Ａ） （３５１Ｂ）の投入
数に応じた運転台数判別装置（３７）の出力信号、並び
に熱媒体制御装置（３６）の第２のオン信号に応じて比
例弁（１４）の弁開度を調整する比例弁制御装置（４０
〉と、運転台数判別装置（３７）の判別信号、並びに熱
媒体制御装置（３６）の第２のオン信号に応じて熱媒体
供給弁（１０）（１１）に通電し、これらを開放させる
供給弁制御装置（４１）とを備えている。FIG. 2 shows the internal configuration of the control unit of the heating device described above, and the indoor control device (29A) (29B) includes operation switches (30A) (30B) and a room temperature thermistor (2).
8A) (28B) detects the room temperature and temperature setting device (31A)
＞(31B＞), and when the room temperature is lower than the set temperature, the thermo switch (32A)
Room temperature control circuit (33A) (33
B), fan motors (34A) (34B) for driving the ventilation fans (27A) (27B) whose energization is controlled by the operation switch and the thermo switch, and the relay (3
5A) (35B). On the other hand, the heat source side control device (16) is a heat medium temperature sensor (T
h) A heating medium control device (36) that emits an on/off thermo signal depending on the detected temperature, and a relay (35A) (35
Relay contact (351A) opened and closed at <351B
) input the contact signal (operating signal) to turn on the indoor unit (25A).
(25B) is a device for determining the number of operating devices (37) that determines whether or not the device is in operation;
36) is emitting the first ON signal, or when the heat medium control device f! (36) is emitting the second on signal, the fan motor (38) for driving the exhaust fan (4)
, circulation pump (9), shutoff valve (13), and ignition device (
15》 combustion control device (3
9), the output signal of the operation number determining device (37) according to the number of inputs of the relay contacts (351A) (351B), and the second ON signal of the heat medium control device (36). ) for adjusting the valve opening degree of the proportional valve control device (40
>, the determination signal of the operation number determination device (37), and the second ON signal of the heat medium control device (36), energizes the heat medium supply valves (10) and (11) to open them. A valve control device (41) is provided.
第３図は熱媒体制御装置（３６）、運転台数判別装置（
３７》、比例弁制御装置ク４０》及び供給弁制御装置く
れ》の内部回路を示すものである。熱媒体制御装置（３
６）はサーミスタよりなる熱媒体温度センサ（Ｔｈ》、
抵抗（４２）ないし（４６）及び比較器（４７）で構成
された第１サーモ回路（４８）と、熱媒体温度センサ（
Ｔｈ》、抵抗（４２）、抵抗（４９）ないし（５２）及
び比較器（５３》で構成された第２サーモ回路（５４）
と、比較器（５３》の出力が供給されるトランジスタ等
の反転器（５５）によって通電が制御される補助リレー
ク５６）と、比較器（５３）の出力側に設けられ、バッ
ファ一回路（５７）、コンデン＋ｈ（５８）、抵抗（５
９》及びバッファ一回路《６０》で構成されたタイマー
回路（６１）とを備え、第１，第２サーモ回路（４８）
（５４）のオン・才フのサーモ信号が燃焼制御装置（３
９）に供給きれている．運転台数判別装置（３７）はリ
レースイッチ（３５１Ａ）（３５１Ｂ）にそれぞれ直列
に接続された抵抗（６２）（６３）と、接続点（６４）
（６５）の電圧を入力とするナンド回路（６６）とで構
成され、接続点（６４）（６５）の電圧は燃焼制御装置
（３９》にも供給されている。比例弁制御装置（４０》
はトランジスタ（６７》、抵抗（６８）ないし（７０》
、才ペアンブ（７１》及びトランジスタ（７２）等から
構成され、接続点（７３）の電圧に応じて比例弁（１４
》の通電量を増減してその弁開度を調整するものであり
、トランジスタ（６７）のベースがダイ才一ド（７４）
を介してバツファ一回路（６０）の出力端に接続される
とともに、抵抗（７５）を介してナンド回路（６６）の
出力端に接続されている。供給弁制御装置（４ｌ》は第
１リレー（７６）、及びトランジスタ等の反転器（７７
》の直列回路と、第２リレー（７８）、及びトランジス
タ等の反転器（７９）の直列回路とで構成され、反転器
（７７）（７９）の入力端がそれぞれ接続点（６４）（
６５）に接続されている．
尚、熱媒体供給弁（１０）（１１）は第４図に示すよう
に、それぞれ第１リレー（７６）、第２リレーク７８）
にて開閉されるリレースイッチ（７６１ ）（ ７８１
）を介して交流電源（８０）に接続されている。また
、リレースイッチ（３５１Ａ）と並列に補助リレー（５
６）にて開閉されるリレースイッチ（５６１）及びダイ
才一ド（８１）の直列回路が設けられ、リレースイッチ
（３５１Ｂ）と並列にリレースイッチ（５６１）及びダ
イオード（８２》の直列回路が設けられている．
室内機（２５Ａ）の運転スイッチ（３０Ａ）のみが投入
され、かつ、サーモスイッチ（３２Ａ）がオンであると
、ファンモータ（３４Ａ）に通電され、送風ファン（２
７Ａ）が運転する．また、リレー（３５Ａ）の通電によ
りリレースイッチ（３５１Ａ）が閉じる．このとき、熱
源側制御装置（１６）の運転台数判別装置（３７）では
、接続点（６４）に電源端子（８３）の定電圧ＶＤが供
給きれるため、反転器（７７）の出力が“Ｌ”になって
第１リレー（７６》が通電され、熱媒体供給弁（１０）
が開放する．また、接続点（６４〉の電圧が燃焼制御装
置（３９）に供給されるため、燃焼制御装置（３９》は
次のようにバーナ《２》の燃焼制御を行う。すなわち、
熱媒体温度センサ（Ｔｈ）の検出温度が第２設定温度（
例えば６０″Ｃ）より低く、熱媒体制御装置（３６）の
第１サーモ回路（４８）がオン信号（比較器（４７）の
出力が“Ｈ”）を発していると、燃焼制御装置（３９）
はまず、排気ファン（４）駆動用のファンモータ（３８
》を始動させ、バーナ（２）にブリパージを行わせると
ともに、循環ポンプ（９〉を起動させる。次いで、燃焼
制御装置（３９〉は点火装置（１５）を作動させ、遮断
弁（１３）を開にし、バーナ（２》に燃焼を開始させる
．
このようにして、室内側制御装置（２９Ａ）の運転信号
に基づいて循環ボンプ（９）が運転し、バーナ（２）で
燃焼が行われると、熱交換器（３）で加熱された熱媒体
は熱媒体タンク（５）、循環ポンプ（９）、往き側ヘッ
ダ−＜２０）、熱媒体供給弁（１０〉及び配管接続口（
２１）を通って分岐路（Ｃ１）に入り、放熱器（２６Ａ
）を流れる。そして、．ここで送風ファン（２７Ａ）に
て送られてくる室内空気と熱交換し、室内の暖房に利用
された後、配管接続口（１７）及び戻り側へ・ノダー（
１９》を通って熱交換器（３）に戻り、実線矢印で示す
循環を繰返す。このとき、運転台数判別装置（３７）の
ナンド回路（６６）の２人力のうち、１人力が“Ｈ”（
電圧ＶＯ）、他入力が“Ｌ”（アースレベル）であり、
その出力が″Ｈ”であるため、比例弁制御装置（４０》
ではトランジスタ（６７）がオンであり、接続点（６８
》の電圧が低目られている。また、才ペブンブ（７１）
の出力電圧が低く、トランジスタ（７２）の導通度が小
さいため、比例弁（１４）を流れる電流が小さく、比例
弁（１４）の弁開度は小さくなっている。そして、バー
ナ（２）では弱燃焼が行われ、暖房負荷に見合った燃焼
量が得られるので、室内機（２５Ａ）の温風温度が極度
に上昇したり、熱媒体温度センサ（Ｔｈ）の検出温度が
第３設定温度（例えば９０゜Ｃ）以上になり、第２サー
モ回路（４８》がオフ信号（比較器（４７）の出力が“
Ｌ”）を発して燃焼がむやみに停止されることがない。Figure 3 shows the heat medium control device (36) and the operation number determination device (
37》, proportional valve control device 40》, and supply valve control device 》internal circuits are shown. Heat medium control device (3
6) is a heat medium temperature sensor (Th) consisting of a thermistor;
A first thermocircuit (48) composed of resistors (42) to (46) and a comparator (47), and a heat medium temperature sensor (
Th》, a second thermo circuit (54) consisting of a resistor (42), resistors (49) to (52), and a comparator (53)
, an auxiliary relay 56) whose energization is controlled by an inverter (55) such as a transistor to which the output of the comparator (53) is supplied, and a buffer circuit (57) provided on the output side of the comparator (53). ), capacitor +h (58), resistance (5
9》 and a timer circuit (61) consisting of a buffer circuit 《60》, and first and second thermocircuits (48).
The ON/OFF thermo signal of (54) is transmitted to the combustion control device (3).
9) is out of supply. The operating number determination device (37) has resistors (62) (63) connected in series to relay switches (351A) (351B), respectively, and a connection point (64).
(65) and a NAND circuit (66) that receives the voltage from the connection point (64) and (65), and the voltage at the connection points (64) and (65) is also supplied to the combustion control device (39).The proportional valve control device (40)
are transistors (67》), resistors (68) to (70》)
, a power amplifier (71), a transistor (72), etc., and a proportional valve (14) depending on the voltage at the connection point (73).
The valve opening degree is adjusted by increasing or decreasing the amount of current flowing through the transistor (67), and the base of the transistor (67) is connected to the die (74).
It is connected to the output end of the buffer circuit (60) via the resistor (75), and to the output end of the NAND circuit (66) via the resistor (75). The supply valve control device (4l) includes a first relay (76) and an inverter (77) such as a transistor.
], a series circuit of a second relay (78), and an inverter (79) such as a transistor, and the input ends of the inverters (77) and (79) are connected to the connection points (64 and 79), respectively.
65). Note that the heat medium supply valves (10) and (11) are connected to the first relay (76) and the second relay 78, respectively, as shown in FIG.
Relay switches (761) (781) that are opened and closed at
) is connected to an AC power source (80). In addition, an auxiliary relay (5
A series circuit of a relay switch (561) and a diode (81) which are opened and closed at 6) is provided, and a series circuit of a relay switch (561) and a diode (82) is provided in parallel with the relay switch (351B). When only the operation switch (30A) of the indoor unit (25A) is turned on and the thermo switch (32A) is on, the fan motor (34A) is energized and the blower fan (2
7A) is driving. Also, the relay switch (351A) closes when the relay (35A) is energized. At this time, in the operation number determination device (37) of the heat source side control device (16), since the constant voltage VD of the power terminal (83) can be supplied to the connection point (64), the output of the inverter (77) is “L”. ”, the first relay (76) is energized, and the heat medium supply valve (10) is turned on.
opens. Furthermore, since the voltage at the connection point (64>) is supplied to the combustion control device (39), the combustion control device (39) controls the combustion of the burner (2) as follows. That is,
The detected temperature of the heat medium temperature sensor (Th) is the second set temperature (
For example, if the temperature is lower than 60"C) and the first thermocircuit (48) of the heat medium control device (36) is emitting an on signal (the output of the comparator (47) is "H"), the combustion control device (39 )
First, install the fan motor (38) for driving the exhaust fan (4).
>> starts the burner (2) to perform a bleed purge, and starts the circulation pump (9>).Next, the combustion control device (39> operates the ignition device (15) and opens the cutoff valve (13). In this way, the circulation pump (9) is operated based on the operation signal of the indoor control device (29A), and combustion is performed in the burner (2). The heat medium heated by the heat exchanger (3) is transferred to the heat medium tank (5), the circulation pump (9), the outgoing header <20), the heat medium supply valve (10>) and the piping connection port (
21), enter the branch path (C1), and enter the radiator (26A
) flows. and,. Here, it exchanges heat with the indoor air sent by the ventilation fan (27A) and is used for indoor heating, and then goes to the pipe connection port (17) and the return side.
19》 and returns to the heat exchanger (3), where the circulation shown by the solid arrow is repeated. At this time, one of the two manpower of the NAND circuit (66) of the operation number determination device (37) is "H" (
voltage VO), other inputs are “L” (earth level),
Since the output is "H", the proportional valve control device (40)
, the transistor (67) is on and the connection point (68
>> voltage is considered low. Also, Saipebunbu (71)
Since the output voltage of the proportional valve (14) is low and the conductivity of the transistor (72) is low, the current flowing through the proportional valve (14) is small, and the opening degree of the proportional valve (14) is small. Then, the burner (2) performs weak combustion and obtains a combustion amount commensurate with the heating load, so the temperature of the hot air from the indoor unit (25A) does not rise excessively, and the heat medium temperature sensor (Th) detects When the temperature reaches or exceeds the third set temperature (for example, 90°C), the second thermocircuit (48) turns off the off signal (the output of the comparator (47)
L") is emitted and combustion is not stopped unnecessarily.
室内側制御装置（２９Ｂ＞の運転スイッチ（３０Ｂ）の
みが投入され、かつ、サーモスイッチ（３２Ｂ）がオン
になり、室内側制御装置（２９Ｂ）から熱源側制御装！
（１６）へ運転信号が発せられた場合も同様であり、こ
の場合、熱媒体供給弁（１１）が開になる。そして、熱
交換器（３）の熱媒体は破線矢印で示すように放熱器（
２６Ｂ）に循環し、放熱器（ ２６Ｂ ）の設置きれた
部屋の暖房に利用される。また、バーナ（２）は室内機
の１台運転に合わせて弱燃焼を行う。Only the operation switch (30B) of the indoor control device (29B>) is turned on, and the thermo switch (32B) is turned on, and the heat source side control device is switched on from the indoor control device (29B)!
The same applies when an operation signal is issued to (16), and in this case, the heat medium supply valve (11) is opened. The heat medium of the heat exchanger (3) is then transferred to the radiator (
26B) and is used to heat a room where a radiator (26B) has been installed. Moreover, the burner (2) performs weak combustion in accordance with the operation of one indoor unit.
室内側制御装置（２９Ａ）（２９Ｂ）の運転スイッチ（
３０Ａ）（３０Ｂ）がともに投入され、かつ、サーモス
イッチ（３２Ａ）（３２Ｂ）が才ンの場合、リレースイ
ッチク３５１Ａ）（３５１Ｂ）がオンになる。この場合
、熱源側制御装置（１６）では反転器（７７）（７９）
の出力が″Ｌ”になってリレー（７６＞（７８）が通電
され、熱媒体供給弁（１０）（１１）が開になる．この
ため、熱交換器（３》の熱媒体は実腺及び破線の矢印で
示すように放熱器（２６Ａ）（２６Ｂ）に循環し、放熱
器（２６Ａ）（２６Ｂ）の設置された部屋の暖房に利用
される．また、ナンド回路（６６）の２人力がともに“
Ｈ”になり、その出力が″Ｌ”になるので、トランジス
タ（６７）はオフとなる。そして、接続点《７３》の電
圧が高められ、比例弁（１４）の通電量が大きくなって
バーナ（２》では強燃焼が行われる．このように、室内
側制御装置（２９Ａ）（２９Ｂ）から熱源側制御装置（
１６）へ同時に運転侶号が送られると、バーナ（２）の
燃焼量が大きくなるため、それぞれの放熱器（２６Ａ）
（２６Ｂ）での温風温度の低下を防止でき、室温を速や
かに設定温度に引き上げることが可能である。Operation switch of indoor control device (29A) (29B) (
30A) (30B) are both turned on, and when the thermo switches (32A) and (32B) are activated, the relay switches 351A and 351B are turned on. In this case, in the heat source side control device (16), the inverter (77) (79)
The output becomes "L", the relay (76>(78) is energized, and the heat medium supply valves (10) and (11) are opened. Therefore, the heat medium of the heat exchanger (3) is in the real gland. The radiators (26A) and (26B) are circulated as shown by the broken line arrows, and used to heat the room where the radiators (26A) and (26B) are installed. Together “
Since the output becomes "H" and its output becomes "L", the transistor (67) is turned off.Then, the voltage at the connection point "73" is increased, and the amount of current flowing through the proportional valve (14) is increased, causing the burner to turn off. In (2), strong combustion takes place. In this way, from the indoor side control device (29A) (29B) to the heat source side control device (
If the driver number is sent to 16) at the same time, the combustion amount of burner (2) will increase, so each radiator (26A)
It is possible to prevent the temperature of the hot air from decreasing in (26B), and it is possible to quickly raise the room temperature to the set temperature.
運転スイッチ（３０Ａ）（３０Ｂ）またはサーモスイッ
チ（３２Ａ）（３２Ｂ）がオフになり、リレースイッチ
（３５１Ａ）（３５１Ｂ）がオフになると、それぞれの
運転信号に対応する送風ファン（２７Ａ）（２７Ｂ）が
停止し、熱媒体供給弁（１０）（１１）が閉じる．また
、リレースイッチ（３５１Ａ）（３５１Ｂ）がともにオ
フになると、燃焼制御装置《３８》に接続点（６４）（
６５）の電圧Ｖゎが供給されなくなるため、燃焼制御装
置（３９》は循環ポンプ（９）の運転と、バーナ（２）
での燃焼とを停止させる。When the operation switch (30A) (30B) or thermo switch (32A) (32B) is turned off and the relay switch (351A) (351B) is turned off, the blower fan (27A) (27B) corresponding to each operation signal is turned off. stops, and the heat medium supply valves (10) and (11) close. Also, when both relay switches (351A) and (351B) are turned off, the connection point (64) (
65) is no longer supplied, the combustion control device (39) operates the circulation pump (9) and the burner (2).
and stop combustion.
このような暖房運転の停止中に、熱媒体温度センサ（Ｔ
ｈ）の検出温度が第１設定温度（例えば５゜Ｃ）より低
くなると、熱媒体制御装置（３６）では第２サーモ回路
（５４）がオン信号（比較器（５３）の出力が“Ｈ”）
を発する．このとき、反転器〈５５）の出力が′Ｌ”と
なって補助リレー（５６）が通電されるため、リレース
イッチ（５６１）がオンになり、リレースイッチ（３５
１Ａ）（３５１Ｂ）がオンのときと同様に燃焼制御装置
（３９）に接続点（６４）（６５）の電圧が供給きれる
．そして、リレー（７６）（７８）の通電によって熱媒
体供給弁（１０）（１１）が開放するとともに、燃焼制
御装置（３９）はバーナ《２》及びポンプ（９）を作動
させる．また、ナンド回路（６６）の出力は“Ｌ”であ
るが、第２サーモ回路（５４）がオン信号を発してから
所定時間（例えば７０秒間）の間、タイマー回路（６１
）の出力（バッファ一回路（６０）の出力）が″Ｈ”で
あるため、ナンド回路（６６）の出力に拘らず、トラン
ジスタ（６７）はオンとなり、比例弁（１４）の弁開度
は小さくなっており、バーナ（２）は弱燃焼を行う．そ
の後、所定時間が経過してコンデンサ（５８）が図示方
向に十分充電されると、タイマー回路（６１）の出力が
“Ｌ”になり、トランジスタ〈６７〉はナンド回路《６
６》の出力によってオフするため、バーナ（２》は強燃
焼に移行する。この結果、熱交換器（３）で加熱された
熱媒体が熱媒体循環路（Ｃ）全体に行渡り、熱媒体温度
センサ（Ｔｈ）の検出温度が第２設定温度以上になると
、第２サーモ回路（５４》が才フ信号（比較器（５３）
の出力が′Ｌ”）を発し、熱媒体供給弁（１０）（１１
）が閉じ、バーナ（２》及び循環ポンプ（９》が停止し
て熱媒体の凍結防止運転が終了する。While the heating operation is stopped, the heat medium temperature sensor (T
h) When the detected temperature becomes lower than the first set temperature (for example, 5°C), the second thermocircuit (54) is turned on in the heat medium control device (36) (the output of the comparator (53) is “H”). )
emits. At this time, the output of the inverter (55) becomes 'L' and the auxiliary relay (56) is energized, so the relay switch (561) is turned on and the relay switch (35) is turned on.
1A) (351B) are on, the voltage at the connection points (64) and (65) can be fully supplied to the combustion control device (39). Then, when the relays (76) and (78) are energized, the heat medium supply valves (10) and (11) are opened, and the combustion control device (39) operates the burner <<2>> and the pump (9). Furthermore, although the output of the NAND circuit (66) is "L", the timer circuit (61
) (output of the buffer circuit (60)) is "H", the transistor (67) is turned on regardless of the output of the NAND circuit (66), and the valve opening of the proportional valve (14) is The burner (2) performs weak combustion. Thereafter, when the capacitor (58) is sufficiently charged in the direction shown in the figure after a predetermined period of time has elapsed, the output of the timer circuit (61) becomes "L", and the transistor <67> is connected to the NAND circuit <<6>.
Since the burner (2) is turned off by the output of the heat exchanger (3), the burner (2) shifts to strong combustion. As a result, the heat medium heated by the heat exchanger (3) is distributed throughout the heat medium circulation path (C), When the temperature detected by the temperature sensor (Th) becomes equal to or higher than the second set temperature, the second thermocircuit (54) outputs an output signal (comparator (53)).
output is 'L''), and the heat medium supply valves (10) (11
) is closed, the burner (2) and the circulation pump (9) are stopped, and the operation to prevent freezing of the heat medium is completed.
本実施例によれば、室内側制御装置の何れかが運転信号
を発する暖房運転中に負荷変動や他の要因によって熱媒
体温度センサ（Ｉ’ｈ）の検出温度が第３設定温度（沸
騰危険温度）以上になると、バ−ナ（２）が停止し、熱
媒体の沸騰を防止することができ、暖房運転の停止中に
熱媒体温度センサ（Ｔｈ”）の検出温度が第１設定温度
（凍結危険温度）以下になると、バーナ（２》を作動さ
せるとともに、熱媒体供給弁（１０）（１１）を開放さ
せ、熱交換器（３）で加熱された熱媒体を熱媒体循環路
（Ｃ）の隅々まで供給して熱媒体の沸騰を肪止すること
ができ、熱媒体温度センサ（Ｔｈ）を共用して熱媒体制
御装置（保護装置） （３６）の簡素化を図ることがで
きる．また、熱媒体温度センサ（Ｔｈ）を熱交換器（３
）の出口部の熱媒体循環路（Ｃ）に取付けたので、暖房
運転中の熱交換器（３）での熱媒体の沸騰を事前に熱媒
体温度センサ（Ｔｈ）で感知することができるばかりで
なく、熱媒体温度センサ（Ｔｈが）熱容量が小さく、か
つ、外気温の影響を受けやすい配管部に取付けられてい
るため、熱媒体循環路（Ｃ）の熱媒体の凍結危険を熱媒
体温度センサ（１’ｈ）で的確に感知することができる
．
尚、上述した実施例では凍結運転時にバーナを作動させ
、熱媒体を加熱するようにしたが、バーナの代わりに電
気ヒータ（図示せず）で熱媒体を加熱しつつ、循環ポン
プ（９》を運転させるようにしても良い．
（ト）発明の効果
この発明は以上のように構成されているので、放熱器側
で運転信号が発せられている暖房運転中には負荷の変勤
やその他の要因によって熱媒体温度が沸騰危険温度以上
になるとバーナの運転が停止され、熱媒体の沸騰を防止
でき、暖房運転停止中に熱媒体温度が凍結危険温度以下
になると、バーナ等の熱媒体加熱装置が作動して熱媒体
の凍結を防止でき、熱媒体温度検出用のセンサを共用し
て保護装置の簡素化を図りつつ、熱媒体循環路の保護が
図れるものである。According to this embodiment, during heating operation in which one of the indoor control devices issues an operation signal, the detected temperature of the heat medium temperature sensor (I'h) changes to the third set temperature (boil danger) due to load fluctuations or other factors. temperature), the burner (2) will stop and the boiling of the heat medium can be prevented, and the temperature detected by the heat medium temperature sensor (Th") will reach the first set temperature ( When the temperature drops below the freezing dangerous temperature, the burner (2) is activated, the heat medium supply valves (10) and (11) are opened, and the heat medium heated by the heat exchanger (3) is transferred to the heat medium circulation path (C ) can be supplied to every corner of the heating medium to prevent boiling of the heating medium, and the heating medium temperature sensor (Th) can be shared to simplify the heating medium control device (protection device) (36). .In addition, the heat medium temperature sensor (Th) is connected to the heat exchanger (3
) is installed in the heat medium circulation path (C) at the outlet of the heat exchanger (3), so the boiling of the heat medium in the heat exchanger (3) during heating operation can be detected in advance with the heat medium temperature sensor (Th). However, since the heat medium temperature sensor (Th) has a small heat capacity and is installed in a piping section that is easily affected by the outside temperature, the risk of freezing of the heat medium in the heat medium circulation path (C) is determined by the heat medium temperature. It can be detected accurately with the sensor (1'h). In the above-mentioned embodiment, the burner was activated to heat the heat medium during freezing operation, but instead of the burner, an electric heater (not shown) was used to heat the heat medium while the circulation pump (9) was activated. (G) Effects of the Invention Since the present invention is configured as described above, during the heating operation when the operation signal is issued on the radiator side, load shifting and other operations are performed. If the temperature of the heat medium reaches the dangerous boiling temperature or higher due to a factor, the operation of the burner will be stopped to prevent the heat medium from boiling, and if the temperature of the heat medium falls below the dangerous freezing temperature while the heating operation is stopped, the heat medium heating device such as a burner will be shut down. is activated to prevent the heating medium from freezing, and by sharing the sensor for detecting the heating medium temperature, the protection device can be simplified and the heating medium circulation path can be protected.
また、請求項２の暖房装置においては、放熱器側で強制
的に運転信号を発生させ、熱媒体供給弁を開放させなく
ても、熱媒体循環路の隅々まで熱交換器で加熱きれた熱
媒体を供給して熱媒体の凍結を防止することができ、使
い勝手に優れている。In addition, in the heating device of claim 2, the heat exchanger can heat every corner of the heat medium circulation path without forcibly generating an operation signal on the radiator side and opening the heat medium supply valve. It can supply a heat medium and prevent the heat medium from freezing, making it easy to use.
さらにまた、請求項３の暖房装置においては、熱交換器
で加熱された熱媒体の沸騰危険温度と、暖房停止時にお
ける熱媒体の凍結危険温度とを１個のセンサでそれぞれ
的確に検出することができるため、熱媒体の沸騰防止及
び凍結防止の制御をより確実に行うことができる．Furthermore, in the heating device according to claim 3, the dangerous boiling temperature of the heat medium heated by the heat exchanger and the dangerous freezing temperature of the heat medium when the heating is stopped can be accurately detected by one sensor. This makes it possible to more reliably control boiling and freezing of the heating medium.
第１図はこの発明の一実施例を示す暖房装置の概略構成
図、第２図は暖房装置の制御装置の回路構成説明図、第
３図は同じく要部電気回路図、第４図は熱媒体供給弁の
駆動回路図である。
（２》・・・バーナ、 《３〉・・・熱交換器、 （９
》・・・循環ポンプ、 （１０）（１１）・・・熱媒体
供給弁、 （１６）・・・熱源側制御装置、 （２６Ａ
）（２６Ｂ）・・・放熱器、 （２９Ａ）（２９Ｂ）・
・・室内側制御装置、 （３６）・・・熱媒体制御装置
（保護装置）、 （Ｔｈ）・・・熱媒体温度センサ、（
Ｃ）・・・熱媒体循環路．Fig. 1 is a schematic configuration diagram of a heating device showing an embodiment of the present invention, Fig. 2 is an explanatory diagram of a circuit configuration of a control device of the heating device, Fig. 3 is a main part electric circuit diagram, and Fig. 4 is a diagram of a heating device. It is a drive circuit diagram of a medium supply valve. (2)... Burner, <3>... Heat exchanger, (9
>> Circulation pump, (10) (11) Heat medium supply valve, (16) Heat source side control device, (26A
)(26B)...Radiator, (29A)(29B)・
... Indoor side control device, (36) ... Heat medium control device (protection device), (Th) ... Heat medium temperature sensor, (
C)...heat medium circulation path.
Claims (3)
熱器とを環状に接続して熱媒体循環路を形成し、放熱器
側の運転信号によってバーナを発停させるようにした暖
房装置において、熱媒体循環路の熱媒体温度を検出する
センサを有し、このセンサの検出温度が沸騰危険温度以
上のときバーナの燃焼を停止させ、かつ、前記センサの
検出温度が凍結危険温度以下のときバーナ等の熱媒体加
熱装置を作動させる保護装置を備えたことを特徴とする
暖房装置。(1) A heating device in which a heat exchanger heated by a burner, a circulation pump, and a radiator are connected in a ring to form a heat medium circulation path, and the burner is started and stopped by an operation signal from the radiator. has a sensor that detects the temperature of the heat medium in the heat medium circulation path, and stops combustion of the burner when the temperature detected by the sensor is above the dangerous boiling temperature, and when the temperature detected by the sensor is below the dangerous freezing temperature. 1. A heating device comprising a protection device for operating a heat medium heating device such as a burner.
媒体供給弁及び放熱器を有する複数の分岐路とを環状に
接続して熱媒体循環路を形成し、放熱器側の運転信号に
よってバーナを発停させるとともに、運転信号に対応す
る熱媒体供給弁を開放させるようにした暖房装置におい
て、熱媒体循環路の熱媒体温度を検出するセンサを有し
、このセンサの検出温度が沸騰危険温度以上のときバー
ナの燃焼を停止させ、かつ、前記センサの検出温度が凍
結危険温度以下のときバーナ等の熱媒体加熱装置を作動
させるとともに、全ての熱媒体供給弁を開放させる保護
装置を備えたことを特徴とする暖房装置。(2) A heat exchanger heated by a burner, a circulation pump, a plurality of branch paths each having a heat medium supply valve and a radiator are connected in a ring to form a heat medium circulation path, and an operation signal on the radiator side is formed. The heating device starts and stops the burner and opens the heat medium supply valve corresponding to the operation signal, and has a sensor that detects the temperature of the heat medium in the heat medium circulation path, and the temperature detected by this sensor is boiling. A protection device is provided that stops combustion of the burner when the temperature is above the dangerous temperature, and operates a heat medium heating device such as a burner and opens all heat medium supply valves when the temperature detected by the sensor is below the dangerous freezing temperature. A heating device characterized by:
口近くの熱媒体循環路に取付けられていることを特徴と
する特許請求の範囲第１項又は第２項記載の暖房装置。(3) The heating device according to claim 1 or 2, wherein a sensor for detecting the temperature of the heat medium is attached to the heat medium circulation path near the heat medium outlet of the heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1047811A JPH0794901B2 (en) | 1989-02-28 | 1989-02-28 | Heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1047811A JPH0794901B2 (en) | 1989-02-28 | 1989-02-28 | Heating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02230028A true JPH02230028A (en) | 1990-09-12 |
| JPH0794901B2 JPH0794901B2 (en) | 1995-10-11 |
Family
ID=12785749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1047811A Expired - Lifetime JPH0794901B2 (en) | 1989-02-28 | 1989-02-28 | Heating system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794901B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140070014A1 (en) * | 2012-09-12 | 2014-03-13 | R.W. Beckett Corporation | Warm weather boiler shutdown |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50142552U (en) * | 1974-05-14 | 1975-11-25 |
-
1989
- 1989-02-28 JP JP1047811A patent/JPH0794901B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50142552U (en) * | 1974-05-14 | 1975-11-25 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140070014A1 (en) * | 2012-09-12 | 2014-03-13 | R.W. Beckett Corporation | Warm weather boiler shutdown |
| US9279590B2 (en) * | 2012-09-12 | 2016-03-08 | R.W. Beckett Corporation | Warm weather boiler shutdown |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0794901B2 (en) | 1995-10-11 |
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