JPH0794900B2 - Heating system - Google Patents

Heating system

Info

Publication number
JPH0794900B2
JPH0794900B2 JP4781089A JP4781089A JPH0794900B2 JP H0794900 B2 JPH0794900 B2 JP H0794900B2 JP 4781089 A JP4781089 A JP 4781089A JP 4781089 A JP4781089 A JP 4781089A JP H0794900 B2 JPH0794900 B2 JP H0794900B2
Authority
JP
Japan
Prior art keywords
heat medium
control device
burner
heat
combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP4781089A
Other languages
Japanese (ja)
Other versions
JPH02230029A (en
Inventor
好夫 武藤
正行 森島
裕 奥村
雅文 岡田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP4781089A priority Critical patent/JPH0794900B2/en
Publication of JPH02230029A publication Critical patent/JPH02230029A/en
Publication of JPH0794900B2 publication Critical patent/JPH0794900B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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を熱媒体を複
数の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。
The present invention relates to a heating device for heating a heat exchanger heated by a burner by circulating a heat medium to a plurality of radiators by a pump.

(ロ)従来の技術 従来のこの種の暖房装置は、例えば特開昭56−133540号
公報に開示されているように、熱源機に内蔵され、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
バーナ及び循環ポンプを運転させるとともに、熱媒体供
給弁を開放させ、熱交換器の熱媒体(水または不凍液
等)を放熱器に供給して室内の暖房を行うものが知られ
ている。
(B) Conventional Technology A conventional heating device of this type is, for example, as disclosed in JP-A-56-133540, a heat exchanger incorporated in a heat source unit and heated by a burner, and a circulation. A pump and a plurality of branch paths having a heat medium supply valve and a radiator are annularly connected to form a heat medium circulation path, and the burner and the circulation pump are operated by the operation signal on the radiator side, and the heat medium supply is performed. It is known to open a valve and supply a heat medium (water or antifreeze) of a heat exchanger to a radiator to heat a room.

(ハ)発明が解決しようとする課題 ところで、上述した暖房装置は分岐路の熱媒体供給弁と
して常閉の熱動弁や電動弁が使用されているため、暖房
を必要としない放熱器には熱媒体が供給されず、無駄な
放熱を防止できる利点がある。しかしながら、放熱器の
運転台数とは無関係にバーナの燃焼量が一定であるた
め、放熱器の運転台数に応じて温風温度が変化するばか
りでなく、運転台数が少ないときには熱交換器の熱媒体
温度が過度に上昇してバーナの燃焼−停止が頻繁に繰返
されたり、運転台数が多いときには室温がなかなか所望
の温度に到達しない問題があった。また、熱媒体の凍結
を防止するためにバーナを作動させる際にも同様な問題
があった。
(C) Problems to be Solved by the Invention By the way, since the above-described heating device uses the normally closed thermal valve or the motorized valve as the heat medium supply valve of the branch path, the radiator that does not require heating is used. There is an advantage that a heat medium is not supplied and wasteful heat dissipation can be prevented. However, since the burner combustion amount is constant regardless of the number of radiators operating, not only the hot air temperature changes according to the number of radiators operating, but when the number of operating radiators is small, the heat medium of the heat exchanger There are problems that the temperature rises excessively and burner combustion-stop is frequently repeated, and the room temperature does not reach the desired temperature when the number of operating units is large. Further, there is a similar problem when operating the burner to prevent the heat medium from freezing.

この発明は上述した事実に鑑みてなされたものであり、
快適で、経済的な暖房運転を実現するとともに、確実
で、効率の良い凍結防止運転が行われるようにすること
を目的とする。
This invention has been made in view of the above facts,
The objective is to realize comfortable and economical heating operation, and to ensure reliable and efficient anti-freezing operation.

(ニ)課題を解決するための手段 この発明の暖房装置は、バーナにて加熱される熱交換器
の熱媒体を、熱媒体供給弁及び放熱器をそれぞれ有する
複数の分岐路に、ポンプで循環するようにした暖房装置
において、各分岐路の熱媒体供給弁及び放熱器に1:1に
対応して設けられ、かつ、運転スイッチ、サーモスイッ
チ等の運転指示に基づいて運転信号を発する複数の室内
側制御装置と、この複数の室内側制御装置の運転信号が
供給される熱源側制御装置とを備え、この熱源側制御装
置には運転信号を発している室内側制御装置の数に応じ
た燃焼量でバーナに燃焼を行わせる手段と、運転信号を
発している室内側制御装置に対応する熱媒体供給弁を開
放させる手段と、暖房運転の停止中に熱媒体温度が所定
温度以下に低下したときには全ての熱媒体供給弁を開放
させると共に、バーナに燃焼を行わせる手段とが設けら
れているものである。
(D) Means for Solving the Problems In the heating device of the present invention, the heat medium of the heat exchanger heated by the burner is circulated by a pump through a plurality of branch paths each having a heat medium supply valve and a radiator. In the heating device configured to do so, a plurality of heat medium supply valves and radiators of the respective branch paths are provided corresponding to 1: 1 and a plurality of operation signals are issued based on an operation instruction such as an operation switch and a thermoswitch. The indoor-side control device and the heat-source-side control device to which the operation signals of the plurality of indoor-side control devices are supplied are provided, and the heat-source-side control device depends on the number of indoor-side control devices that issue the operation signals. A means for causing the burner to burn with the amount of combustion, a means for opening the heat medium supply valve corresponding to the indoor control device issuing an operation signal, and a heat medium temperature falling below a predetermined temperature while the heating operation is stopped. When you do all heat media Means for opening the supply valve and causing the burner to perform combustion are provided.

(ホ)作 用 複数の放熱器のそれぞれに1:1に対応して設けられた室
内側制御装置の何れかが運転スイッチ、サーモスイッチ
等の運転指示に基づいて運転信号を発すると、熱源側制
御装置は運転信号を発している室内側制御装置の数に応
じた燃焼量でバーナに燃焼を行わせる。また、運転信号
を発している室内側制御装置に1:1に対応する熱媒体供
給弁を開放させる。このため、暖房を必要とする放熱器
にのみ加熱された熱媒体が供給されるばかりでなく、バ
ーナの燃焼量が暖房負荷に応じて適度に調整され、それ
ぞれの放熱器の温風温度や熱媒体温度が全体の暖房負荷
によって大きく変動する心配がないなど、快適で、経済
的な暖房運転が行われる。
(E) Operation When one of the indoor side control devices provided for each of the multiple radiators in a 1: 1 ratio issues an operation signal based on an operation instruction from an operation switch, thermo switch, etc., the heat source side The control device causes the burner to perform combustion with a combustion amount according to the number of indoor control devices that are issuing operation signals. Further, the indoor-side control device that is issuing the operation signal opens the heat medium supply valve corresponding to 1: 1. For this reason, not only is the heated heat medium supplied to only the radiators that require heating, but the burner combustion amount is adjusted appropriately according to the heating load, and the hot air temperature and heat of each radiator are adjusted. Comfortable and economical heating operation is performed without worrying that the medium temperature fluctuates significantly depending on the overall heating load.

このような暖房運転の停止中に熱媒体温度が所定温度以
下に低下すると、熱源側制御装置は全ての熱媒体供給弁
を開放させるとともに、バーナに所定量の燃焼を行わせ
る。このため、熱交換器で加熱された熱媒体がその循環
路に隅々まで行渡り、熱媒体の凍結が確実に防止される
とともに、熱媒体が適度に加熱され、効率の良い凍結防
止運転が行われる。
When the heat medium temperature falls below a predetermined temperature during the stop of the heating operation as described above, the heat source side control device opens all the heat medium supply valves and causes the burner to perform a predetermined amount of combustion. For this reason, the heat medium heated by the heat exchanger spreads to every corner of the circulation path to reliably prevent the heat medium from freezing, and the heat medium is appropriately heated to ensure an efficient antifreezing operation. Done.

(ヘ)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。(F) Embodiment Hereinafter, an embodiment of the present invention shown in the drawings will be described.

第1図において、(1)は屋外に設置される熱源機であ
り、熱源機(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機(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)に装着さ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(12)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置(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
(3)、熱媒体タンク(5)、循環ポンプ(9)、往き
側ヘッダー(20)、2つの熱媒体供給弁(10)(11)、
及び2つの配管接続口(21)(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、0.3kg/cm2以上)がかかると、その
方向に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。(25A)(25
B)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(26
A)(26B)、送風ファン(27A)(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(C1)(C2)を介して熱媒体循環路(C)に接続さ
れている。
In FIG. 1, (1) is a heat source unit installed outdoors, and the heat source unit (1) has a burner (2), a heat exchanger (3) heated by the burner (2), and an exhaust fan. (4), a heat medium tank (5), and a reserve connected to the heat medium tank (5) via a pressure regulating valve (7) of a radiator cap (6) mounted on the heat medium tank (5). A tank (8), a circulation pump (9), two normally closed heat medium supply valves (10) (11) consisting of heat operated valves, a gas pipe (12) connected to the burner (2), A shutoff valve (13) and a proportional control valve (14) provided in the gas pipe (12), an ignition device (15) provided near the burner (2), and a heat source side control device (16) are built-in. Has been done. Also, the two pipe connection ports (17) and (18), the return side header (19), the heat exchanger (3), the heat medium tank (5), the circulation pump (9), the forward side header (20), and the two. Heat medium supply valve (10) (11),
And the two pipe connection ports (21) and (22) are sequentially connected by pipes, which form the heat medium circulation path (C) on the heat source unit (1) side, and the heat of the heat exchanger (3). A heat medium temperature sensor (Th) is attached to the heat medium circulation path (C) near the medium outlet. Further, a liquid supply port (23) is provided in the upper part of the heat medium tank (5), and a check valve (24) is built in the liquid supply port (23). This check valve (24) allows the heat medium to flow in the direction of the arrow when pressure (for example, 0.3 kg / cm 2 or more) is applied in the direction of the arrow, and allows the flow of the heat medium in the direction opposite to the arrow. It is to prevent. (25A) (25
B) is an indoor unit such as a fan convector installed in the room. The indoor unit (25A) (25B) has a radiator (26A).
A) (26B), blower fans (27A) (27B), room temperature thermistors (28A) (28B), and indoor control devices (29A) (29B)
Is built in. The radiators (26A) (26B) are connected to the heat medium circulation path (C) via the branch paths (C1) (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(28A)(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)をオンにする室温制御回
路(33A)(33B)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(35
A)(35B)とから構成されている。
FIG. 2 shows the internal structure of the control part of the heating device described above. The indoor side control devices (29A) (29B) have operation switches (30A) (30B) and room temperature thermistors (28A) (28B). The detected room temperature is compared with the set temperature set by the temperature setters (31A) (31B), and the room temperature control circuit (33A) turns on the thermo switches (32A) (32B) when the room temperature is lower than the set temperature. ) (33B), fan motors (34A) (34B) for driving fan (27A) (27B) whose energization is controlled by an operation switch and a thermo switch, and a relay (35).
A) and (35B).

一方、熱源側制御装置(16)は熱媒体温度センサ(Th)
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)(35B)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置(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)、循環ポンプ(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(39)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(3
6)の第2のオン信号に応じて熱媒体供給弁(10)(1
1)に通電し、これらを開放させる供給弁制御装置(4
1)とを備えている。
On the other hand, the heat source side control device (16) is a heat medium temperature sensor (Th).
Contact signal (operation signal) of the heat medium control device (36) that outputs an on / off thermo signal according to the detected temperature of the relay and the relay contacts (351A) (351B) that are opened and closed by the relays (35A) (35B) Is input to determine whether or not the indoor units (25A) (25B) are operating, and the operating number determination device (37) determines one or more operating signals, and A fan motor for driving the exhaust fan (4) when the heat medium control device (36) is emitting a first ON signal or when the heat medium control device (36) is emitting a second ON signal. (38), the circulation pump (9), the shutoff valve (13), and the ignition control device (15) that energizes the ignition device (15) in a predetermined sequence, and the number of relay contacts (351A) (351B) The output signal of the operating number discriminating device (37) and the second ON signal of the heat medium control device (36). Flip and proportional valve (14)
Of the proportional valve control device (40) for adjusting the valve opening of the device, the discriminating signal of the operating device discriminating device (37), and the heat medium control device (3).
In response to the second ON signal of 6), the heat medium supply valve (10) (1
Supply valve control device (4) that energizes 1) to open them
1) and are provided.

第3図は熱媒体制御装置(36)、運転台数判別装置(3
7)、比例弁制御装置(40)及び供給弁制御装置(41)
の内部回路を示すものである。熱媒体制御装置(36)は
サーミスタよりなる熱媒体温度センサ(Th)、抵抗(4
2)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(4
2)、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(56)と、比較器(53)の出力
側に設けられ、バッファー回路(57)、コンデンサ(5
8)、抵抗(59)及びバッファー回路(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・オフのサーモ信号が燃焼制御装置
(39)に供給されている。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(6
4)(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)、提
供(68)ないし(70)、オペアンプ(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)のベースがダイオー
ド(74)を介してバッファー回路(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(41)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。
FIG. 3 shows the heat medium control device (36) and the operating number discriminating device (3
7), proportional valve controller (40) and supply valve controller (41)
2 shows the internal circuit of the. The heat medium control device (36) includes a heat medium temperature sensor (Th) consisting of a thermistor and a resistor (4
2) to (46) and a first thermo circuit (48) composed of a comparator (47), a heat medium temperature sensor (Th), a resistor (4)
2), a second thermo circuit (54) composed of resistors (49) to (52) and a comparator (53), and an inverter (55) such as a transistor to which the output of the comparator (53) is supplied. The auxiliary relay (56) whose energization is controlled and the output side of the comparator (53) are provided with a buffer circuit (57) and a capacitor (5).
8), a timer circuit (61) composed of a resistor (59) and a buffer circuit (60), and the combustion control device receives the on / off thermo signals of the first and second thermo circuits (48) (54). (39) is being supplied. The operating number discriminating device (37) has a NAND circuit (66) in which the resistors (62) and (63) connected in series to the relay switches (351A) and (351B) and the voltages at the connection points (64) and (65) are input. ) And the connection point (6
4) The voltage of (65) is also supplied to the combustion control device (39). The proportional valve control device (40) includes a transistor (67), supplies (68) to (70), an operational amplifier (71), a transistor (72), and the like, and the proportional valve (14) is controlled according to the voltage of the connection point (73). ) Of the transistor (67) is connected to the output terminal of the buffer circuit (60) through the diode (74) and the resistance (75 ) Through the NAND circuit (66)
Is connected to the output end of. The supply valve control device (41) includes a series circuit of a first relay (76) and an inverter (77) such as a transistor, and a second relay (78) and a series circuit of an inverter (79) such as a transistor. Inverters made up (77)
The input ends of (79) are connected to the connection points (64) and (65), respectively.

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(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(351
A)と並列に補助リレー(56)にて開閉されるリレース
イッチ(561)及びダイオード(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。
As shown in FIG. 4, the heat medium supply valves (10) and (11) are
They are connected to an AC power supply (80) via relay switches (761) and (781) that are opened and closed by a first relay (76) and a second relay (78), respectively. In addition, relay switch (351
A series circuit of a relay switch (561) and a diode (81) opened and closed by an auxiliary relay (56) is provided in parallel with A), and a relay switch (561) and a diode (82) are provided in parallel with the relay switch (351B). A series circuit of is provided.

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(27A)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が供給されるため、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℃)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)にプ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。
Only the operation switch (30A) of the indoor unit (25A) is turned on,
When the thermo switch (32A) is on, the fan motor (34A) is energized and the blower fan (27A) operates. Also, the relay switch (351A) is closed by energizing the relay (35A). At this time, in the operating number discriminating device (37) of the heat source side control device (16), the constant voltage V D of the power supply terminal (83) is supplied to the connection point (64), so that the output of the inverter (77) is changed. When it goes to "L", the first relay (76) is energized and the heat medium supply valve (10) is opened. Further, 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 lower than the second set temperature (for example, 60 ° C.), and the first thermo circuit (48) of the heat medium control device (36) outputs the ON signal (comparator (47) When the output is "H"), the combustion control device (39) first
The fan motor (38) for driving the exhaust fan (4) is started, the burner (2) is pre-purged, and the circulation pump (9) is started. Next, the combustion control device (39) operates the ignition device (15), opens the shutoff valve (13), and causes the burner (2) to start combustion.

このようにして、室内側制御装置(29A)の運転信号に
基づいて循環ポンプ(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
ー(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)及び戻り側ヘッダー(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入
力のうち、1入力が“H"(電圧VD)、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、オペ
アンプ(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℃)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。
In this way, when 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 in the heat exchanger (3) Enters the branch passage (C1) through the heat medium tank (5), the circulation pump (9), the forward side header (20), the heat medium supply valve (10) and the pipe connection port (21), and the radiator (26A ).
Then, after heat exchange with the indoor air sent by the blower fan (27A) and being used for indoor heating, the heat exchanger passes through the pipe connection port (17) and the return side header (19). Returning to (3), the circulation indicated by the solid arrow is repeated. At this time, one of the two inputs of the NAND circuit (66) of the operating number discriminating device (37) is “H” (voltage V D ), the other input is “L” (earth level), and its output is Since it is "H", the transistor (67) is ON in the proportional valve control device (40), and the voltage at the connection point (68) is low. Further, since the output voltage of the operational amplifier (71) is low and the conductivity of the transistor (72) is small, the current flowing through the proportional valve (14) is small and the valve opening of the proportional valve (14) is small. Then, since the burner (2) performs weak combustion and obtains a combustion amount commensurate with the heating load, the warm air temperature of the indoor unit (25A) extremely rises or the heat medium temperature sensor (Th) detects it. The temperature has risen above the third set temperature (for example, 90 ° C), and the second thermo circuit (48) turns off (the output of the comparator (47) is "L").
The combustion will not be 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)から熱源側制御装置(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)の設置さ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 thermoswitch (32B) is turned on.
The same applies when an operation signal is issued from the indoor side control device (29B) to the heat source side control device (16), in which case the heat medium supply valve (11) is opened. Then, the heat medium of the heat exchanger (3) circulates to the radiator (26B) as indicated by a dashed arrow and is used for heating the room in which the radiator (26B) is installed. Further, 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(32
A)(32B)がオンの場合、リレースイッチ(351A)(35
1B)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(7
6)(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)の熱媒体は実線及び
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入力がともに
“H"になり、その出力が“L"になるので、トランジスタ
(67)はオンとなる。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
運転信号が送られると、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。
Indoor side control device (29A) (29B) operation switch (30A)
(30B) is turned on and the thermo switch (32B)
When A) (32B) is on, relay switch (351A) (35
1B) turns on. In this case, in the heat source side control device (16), the output of the inverters (77) (79) becomes "L" and the relay (7
6) (78) is energized and the heat medium supply valves (10) (11) are opened. Therefore, the heat medium of the heat exchanger (3) circulates to the radiators (26A) (26B) as shown by solid and dashed arrows, and is used for heating the room where the radiators (26A) (26B) are installed. Used. Further, since both inputs of the NAND circuit (66) become "H" and its output becomes "L", the transistor (67) is turned on. Then, the voltage at the connection point (73) is increased, the energization amount of the proportional valve (14) is increased, and strong combustion is performed in the burner (2). Thus, when the operation signals are simultaneously sent from the indoor side control devices (29A) and (29B) to the heat source side control device (16), the combustion amount of the burner (2) increases, so that the respective radiators (26A). It is possible to prevent the temperature of the hot air at (26B) from decreasing and 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(32
A)(32B)がオフになり、リレースイッチ(351A)(35
1B)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)(351
B)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VD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。
Operation switch (30A) (30B) or thermo switch (32
A) (32B) is turned off and relay switch (351A) (35
1B) is turned off, the blower fans (27A) (27B) corresponding to the respective operation signals stop, and the heat medium supply valve (10)
(11) closes. In addition, the relay switch (351A) (351
When both B) are turned off, the voltage V D at the connection points (64) (65) is not supplied to the combustion control device (38), so the combustion control device (39) operates the circulation pump (9) and burner. The combustion in (2) is stopped.

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℃)より低く
なると、熱媒体制御装置(36)では第2サーモ回路(5
4)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(56
1)がオンになり、リレースイッチ(351A)(351B)が
オンのときと同様に燃焼制御装置(39)に接続点(64)
(65)の電圧が供給される。そして、リレー(76)(7
8)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(バッファー回路(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
充分充電されると、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(66)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(T
h)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)がオフ信号(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 such heating operation is stopped, the heat medium temperature sensor (T
When the detected temperature of h) becomes lower than the first set temperature (for example, 5 ° C.), the heat medium control device (36) causes the second thermo circuit (5
4) issues an ON signal (the output of the comparator (53) is "H"). At this time, the output of the inverter (55) becomes "L" and the auxiliary relay (56) is energized, so the relay switch (56
1) is turned on, the connection point (64) to the combustion control device (39) is the same as when the relay switches (351A) (351B) are turned on.
The voltage of (65) is supplied. And the relay (76) (7
The heat medium supply valves (10) and (11) are opened by energization of 8), and the combustion control device (39) operates the burner (2) and the pump (9). The output of the NAND circuit (66) is "L", but the output (buffer) of the timer circuit (61) is kept for a predetermined time (for example, 70 seconds) after the second thermo circuit (54) issues an ON signal. The output of the circuit (60) is "H"
Therefore, regardless of the output of the NAND circuit (66), the transistor (67) is turned on, the valve opening of the proportional valve (14) is reduced, and the burner (2) performs weak combustion. After that, when the capacitor (58) is sufficiently charged in the direction shown in the figure after a predetermined time has passed, the output of the timer circuit (61) becomes "L" and the transistor (67) is turned off by the output of the NAND circuit (66). Therefore, the burner (2) shifts to strong combustion. As a result, the heat medium heated by the heat exchanger (3) spreads throughout the heat medium circulation path (C), and the heat medium temperature sensor (T
When the temperature detected in h) becomes equal to or higher than the second set temperature, the second thermo circuit (54) turns off (the output of the comparator (53) is "L").
The heat medium supply valves (10) and (11) are closed, the burner (2) and the circulation pump (9) are stopped, and the heat medium freeze prevention operation is completed.

このように、凍結防止運転中は所定時間、バーナ(2)
に弱燃焼を行わせてから、強燃焼へ移行するようにした
ので、本実施例のように全閉から全開までに時間(例え
ば数十秒間)がかかる熱動弁を熱媒体供給弁(10)(1
1)として用いた場合でも、熱媒体が熱媒体循環路
(C)全体に行渡らないうちにサーモ回路(54)がオフ
信号を発し、燃焼が停止してしまうことを防止できる。
また、熱媒体供給弁(10)の全開後は速やかに熱媒体温
度を上昇させることができるため、第5図に示すように
放熱器(26A)(26B)と並列に熱容量の大きな温水マッ
ト等の床暖房器(84A)(84B)が接続されている場合で
も、凍結防止運転を比較的短い時間(例えば数分間)で
終らせることができる。もちろん、第6図に示すよう
に、第2サーモ回路(54)の出力をバッファー回路(6
0)及びダイオード(74)を介してトランジスタ(67)
のベースに供給し、凍結防止運転中は弱燃焼が行われる
ようにしても良く、第1図の暖房装置のように放熱器の
みが用いられている場合には弱燃焼を継続しても凍結防
止運転が長引くことはない。
As described above, the burner (2) is operated for a predetermined time during the antifreezing operation.
Since the weak combustion is performed to the strong combustion, the heat valve that takes time (for example, several tens of seconds) from fully closed to fully opened is used as the heat medium supply valve (10 ) (1
Even when used as 1), it can be prevented that the thermo circuit (54) issues an off signal and the combustion is stopped before the heat medium has spread to the whole heat medium circulation path (C).
Further, since the temperature of the heat medium can be raised quickly after the heat medium supply valve (10) is fully opened, as shown in FIG. 5, a hot water mat or the like having a large heat capacity in parallel with the radiators (26A) and (26B). Even when the floor heaters (84A) and (84B) are connected, the antifreezing operation can be completed in a relatively short time (for example, several minutes). Of course, as shown in FIG. 6, the output of the second thermo circuit (54) is changed to the buffer circuit (6
0) and diode (74) through transistor (67)
It may be supplied to the base of the vehicle and weak combustion may be performed during the anti-freezing operation. If only a radiator is used as in the heating system of FIG. Preventive driving does not last long.

(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、複数の室
内側制御装置の何れかが運転信号を発しているときには
バーナで熱交換器が加熱され、熱交換器で加熱された熱
媒体が暖房を必要とされている放熱器のみに供給され、
無駄な放熱が防止されるばかりでなく、運転信号の数に
応じてバーナの燃焼量が調整され、それぞれの放熱器の
温風温度や熱媒体温度が全体の暖房負荷によって大きく
変動しないようにでき、快適で、経済的な暖房運転を実
現できるものであり、さらには、暖房運転の停止中に熱
媒体温度が所定温度以下に低下した場合には全ての熱媒
体供給弁が開放されるとともに、バーナが所定量の燃焼
を行うため、熱交換器で適度に加熱された熱媒体が熱媒
体循環路の隅々まで供給され、熱媒体の凍結防止を確実
に、かつ効率良く行うことができるものである。
(G) Effect of the Invention Since the present invention is configured as described above, the heat exchanger is heated by the burner and heated by the heat exchanger when any of the plurality of indoor side control devices is issuing an operation signal. The supplied heat medium is supplied only to the radiator that requires heating,
Not only is wasteful heat dissipation prevented, but the burner combustion amount is adjusted according to the number of operating signals to prevent the hot air temperature and heat medium temperature of each radiator from fluctuating significantly depending on the overall heating load. A comfortable, economical heating operation can be realized, and further, when the heating medium temperature falls below a predetermined temperature during the heating operation is stopped, all the heating medium supply valves are opened, Since the burner burns a predetermined amount, the heat medium heated appropriately by the heat exchanger is supplied to every corner of the heat medium circulation path, and it is possible to reliably and efficiently prevent the heat medium from freezing. Is.

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

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、第5図はこの発明の他の実施例を示す暖房
装置の概略構成図、第6図は暖房装置の制御装置の他の
1例を示す要部電気回路図である。 (1)……熱源機、(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、(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 an electric circuit diagram of a main part of the same, and FIG. FIG. 5 is a drive circuit diagram of the medium supply valve, FIG. 5 is a schematic configuration diagram of a heating device showing another embodiment of the present invention, and FIG. 6 is an electric circuit diagram of main parts showing another example of the control device of the heating device. is there. (1) ...... Heat source machine, (2) ...... Burner, (3) ...... Heat exchanger, (9) ...... Circulation pump, (10) (11) ...... Heat medium supply valve, (16) ...... Heat source side controller, (26A) (26B) ...
… Radiator, (29A) (29B)… Indoor control device, (Th)
...... Heat medium temperature sensor, (C) …… Heat medium circuit.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】バーナにて加熱される熱交換器の熱媒体
を、熱媒体供給弁及び放熱器をそれぞれ有する複数の分
岐路に、ポンプで循環するようにした暖房装置におい
て、各分岐路の熱媒体供給弁及び放熱器に1:1に対応し
て設けられ、かつ、運転スイッチ、サーモスイッチ等の
運転指示に基づいて運転信号を発する複数の室内側制御
装置と、この複数の室内側制御装置の運転信号が供給さ
れる熱源側制御装置とを備え、この熱源側制御装置には
運転信号を発している室内側制御装置の数に応じた燃焼
量でバーナに燃焼を行わせる手段と、運転信号を発して
いる室内側制御装置に対応する熱媒体供給弁を開放させ
る手段と、暖房運転の停止中に熱媒体温度が所定温度以
下に低下したときには全ての熱媒体供給弁を開放させる
と共に、バーナに燃焼を行わせる手段とが設けられてい
ることを特徴とする暖房装置。
1. A heating device in which a heat medium of a heat exchanger heated by a burner is circulated by a pump in a plurality of branch passages each having a heat medium supply valve and a radiator, in each of the branch passages. A plurality of indoor side control devices that are provided for the heat medium supply valve and the radiator in a 1: 1 correspondence, and that emit operating signals based on operating instructions such as operating switches and thermo switches, and the plurality of indoor side controls A heat source side control device to which an operation signal of the device is supplied, and this heat source side control device, means for causing the burner to perform combustion at a combustion amount according to the number of indoor side control devices issuing the operation signal, A means for opening the heat medium supply valve corresponding to the indoor control device issuing the operation signal, and opening all the heat medium supply valves when the heat medium temperature drops below a predetermined temperature during the stop of the heating operation. Burning the burner Heating apparatus characterized by means to I are provided.
JP4781089A 1989-02-28 1989-02-28 Heating system Expired - Fee Related JPH0794900B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4781089A JPH0794900B2 (en) 1989-02-28 1989-02-28 Heating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4781089A JPH0794900B2 (en) 1989-02-28 1989-02-28 Heating system

Publications (2)

Publication Number Publication Date
JPH02230029A JPH02230029A (en) 1990-09-12
JPH0794900B2 true JPH0794900B2 (en) 1995-10-11

Family

ID=12785721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4781089A Expired - Fee Related JPH0794900B2 (en) 1989-02-28 1989-02-28 Heating system

Country Status (1)

Country Link
JP (1) JPH0794900B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04136628A (en) * 1990-09-27 1992-05-11 Sanyo Electric Co Ltd Hot-water heating apparatus
JP2762010B2 (en) * 1993-01-20 1998-06-04 ネポン株式会社 Control unit for heating boiler system

Also Published As

Publication number Publication date
JPH02230029A (en) 1990-09-12

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