JPH04136627A - Hot-water heating apparatus - Google Patents

Hot-water heating apparatus

Info

Publication number
JPH04136627A
JPH04136627A JP2259183A JP25918390A JPH04136627A JP H04136627 A JPH04136627 A JP H04136627A JP 2259183 A JP2259183 A JP 2259183A JP 25918390 A JP25918390 A JP 25918390A JP H04136627 A JPH04136627 A JP H04136627A
Authority
JP
Japan
Prior art keywords
hot water
freeze
temperature
heat source
circulation pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2259183A
Other languages
Japanese (ja)
Inventor
Yutaka Okumura
裕 奥村
Yoshio Muto
好夫 武藤
Masayuki Morishima
森島 正行
Masafumi Okada
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 JP2259183A priority Critical patent/JPH04136627A/en
Publication of JPH04136627A publication Critical patent/JPH04136627A/en
Pending legal-status Critical Current

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  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

PURPOSE:To surely perform freeze-preventing operation without wastefulness, by a method wherein when an operation signal is not transmitted and a temperature detected by a sensor for water temperature is at a specific temperature or lower, a circulating pump and a heat source device are started and are stopped in a specific time. CONSTITUTION:When a temperature detected by a sensor 16 for water temperature is at a specific temperature or lower during the stoppage of heating--operation, a circulating pump 5 and a gas burner 11 are operated and freeze-preventing operation starts and is continued for a specific time. In the time of the danger of freezing, hot water is supplied throughout a hot water-circulating circuit C by properly controlling time-setting for a timer, according to the pipe length, etc., and thus the water is surely prevented from freezing in the hot water-circulating circuit C. During the freeze-preventing operation the combustion by the gas burner 11 is weakened, and the freeze-preventing operation is effectively performed. When an operation signal is transmitted from indoor-side control devices 22A, 22B during the freeze-preventing operation, the freeze--preventing operation is stopped at that point of time and heating operation corresponding to the operation signal is performed. For that reason, the freezing in the hot water-circulating circuit C is surely prevented and the hot water heating can be also made comfortable.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 この発明は熱源を有する温水加熱装置の温水を放熱、装
置ヘボンブで循環して暖房を行う温水暖房装置に関する
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a hot water heating device that performs heating by dissipating hot water from a hot water heating device having a heat source and circulating it through a pump.

(口〉従来の技術 この種の温水暖房装置は、例えば実公昭58−7213
号公報に開示されているように、バーナ等の熱源を有す
る温水加熱装置と循環ポンプと放熱装置とを管路で接続
した温水循環回路を形成したものが知られている。そし
て、放熱装置側に設けられた制御装置の運転信号を温水
加熱装置側の制御装置に送って循環ポンプと熱源を作動
させ、温水加熱装置の温水を放熱装置に循環して室内の
暖房が行われるようにしている。
(Example) Conventional technology This type of hot water heating device was developed, for example, in
As disclosed in the above publication, a hot water circulation circuit is known in which a hot water heating device having a heat source such as a burner, a circulation pump, and a heat radiating device are connected through a pipe. Then, an operating signal from the control device installed on the heat radiating device is sent to the control device on the hot water heating device to operate the circulation pump and heat source, circulating hot water from the hot water heating device to the heat radiating device to heat the room. I'm trying to make it happen.

(ハ)発明が解決しようとする課題 ところで、上述した温水暖房装置では、凍結を防止する
ためにプロピレン・グリコールやエチレン・グリコール
等の不凍液を水と混ぜ、これを循環水として使用してい
た。しかしながら、このような循環水を用いると、不凍
液が高価であるばかりでなく、不凍液と水との配分が難
しいため、工事費や維持費が高くなる問題があった。も
ちろん、循環水として主に水を使用し、凍結危険時には
循環ポンプと熱源を作動させるようにすれば、このよう
な問題は解消されるが、水温センサの取付は位置の選択
や温度設定が適切に行われていない場合には循環ポンプ
及び熱源が頻繁に発停したり、凍結防止運転が必要以上
に長引き、エネルギーが無駄に使われるなどの欠点があ
った。
(c) Problems to be Solved by the Invention In the above-mentioned hot water heating system, in order to prevent freezing, an antifreeze solution such as propylene glycol or ethylene glycol is mixed with water and used as circulating water. However, when such circulating water is used, there is a problem that not only is the antifreeze solution expensive, but also that the distribution of the antifreeze solution and water is difficult, resulting in high construction costs and maintenance costs. Of course, this problem can be solved by mainly using water as circulating water and activating the circulation pump and heat source when there is danger of freezing, but it is important to select the appropriate location and temperature settings when installing the water temperature sensor. If this is not done, the circulation pump and heat source may start and stop frequently, the antifreeze operation may take longer than necessary, and energy is wasted.

この発明は上述した事実に鑑みてなされたものであり、
凍結危険時に循環ポンプ及び熱源を作動させるようにし
たものにおいて、凍結防止運転が無駄なく、的確に行わ
れるようにすることを目的とする。
This invention was made in view of the above facts,
To enable anti-freeze operation to be carried out accurately and without waste in a device in which a circulation pump and a heat source are activated in the event of danger of freezing.

(ニ)課題を解決するための手段 この発明では、熱源を有する温水加熱装置と循環ポンプ
と放熱装置とを管路で接続した温水循環回路を形成し、
放熱装置側の運転信号によって循環ポンプ及び熱源を作
動させるようにした温水暖房装置において、温水循環回
路の水温を検出する水温センサと、運転信号がないとき
で、かつ、水温センサの検出温度が所定温度以下のとき
に循環ポンプ及び熱源を作動させ、循環ポンプ及び熱源
の作動開始時点から所定時間後に循環ポンプ及び熱源を
停止させる凍結防止制御手段とを備えた構成である。
(d) Means for solving the problem In this invention, a hot water circulation circuit is formed in which a hot water heating device having a heat source, a circulation pump, and a heat radiating device are connected by a pipe line,
In a hot water heating system in which a circulation pump and a heat source are operated by an operation signal from a heat dissipation device, a water temperature sensor detects the water temperature in the hot water circulation circuit, and when there is no operation signal, the detected temperature of the water temperature sensor is a predetermined temperature. The structure includes an antifreeze control means that operates the circulation pump and the heat source when the temperature is below the temperature, and stops the circulation pump and the heat source after a predetermined time from when the circulation pump and the heat source start operating.

(本)作用 運転停止中に水温センサの検出温度が所定温度以下に下
がると、循環ポンプ及び熱源を作動させ、所定時間後に
これらを停止きせる凍結防止運転が行われる。このよう
に、−旦、凍結防止運転が開始すると、その後は水温セ
ンサの検出温度に拘りなく、凍結防止運転が所定時間継
続するので、温水循環回路全体に温水が行渡るようにで
き、温水循環回路での凍結が確実に防止されるばかりで
なく、凍結防止運転の頻繁な発停が防止される。また、
凍結防止運転が必要以上に長引かないようにでき、エネ
ルギーが節約きれる。
(Main) When the temperature detected by the water temperature sensor falls below a predetermined temperature while the operation is stopped, an antifreeze operation is performed in which the circulation pump and heat source are activated and stopped after a predetermined period of time. In this way, once the antifreeze operation starts, the antifreeze operation continues for a predetermined period of time regardless of the temperature detected by the water temperature sensor, so hot water can be distributed throughout the hot water circulation circuit, and the hot water circulation can be improved. Not only is freezing in the circuit reliably prevented, but frequent starting and stopping of antifreeze operation is also prevented. Also,
Freeze prevention operation can be prevented from lasting longer than necessary, saving energy.

(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。(f) Example Hereinafter, embodiments 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〉には入口側ヘッダー(2)と出口側ヘ
ッダー(3)との間に温水タンク(4)、循環ポンプ(
5)及び熱交換器(6A)が順次管路で接続された温水
回路(7)と、温水タンク(4〉の上部に取付けられた
ラジェータキャップ(8)の圧力調整弁(9)を介して
温水タンク(4)に接続された補給水タンク(10)と
、熱交換器(6A)を加熱するガスバーナ(11)と、
このガスバーナ(11)にガス燃料を供給する比例弁(
PV>及び電磁弁(12)ト、ガx バー す(11)
(7)近くに設けられた点火装置(13)及びフレーム
ロッド(14)と、循環ポンプ(5)と熱交換器(6A
)との間の温水回路(7)に接続された注水口(15)
と、熱交換器(6A〉の出口側の温水回路(7)に取付
けられた水温センサ(16)と、熱源側制御装置(17
)とが設けられている。熱交換器(6A)と熱源として
のガスバーナ(11)とで温水加熱装置(6)を構成し
ている。
In Figure 1, <1) is a heat source device installed outdoors, and the heat source device (1) has a hot water tank (4) between the inlet side header (2) and the outlet side header (3), and a circulation pump(
5) and a heat exchanger (6A) are sequentially connected through a pipe line to a hot water circuit (7), and a pressure regulating valve (9) of a radiator cap (8) attached to the top of a hot water tank (4>). A makeup water tank (10) connected to the hot water tank (4), and a gas burner (11) that heats the heat exchanger (6A).
A proportional valve (
PV> and solenoid valve (12), gas bar (11)
(7) Ignition device (13) and flame rod (14) provided nearby, circulation pump (5) and heat exchanger (6A
) Water inlet (15) connected to the hot water circuit (7) between
, a water temperature sensor (16) attached to the hot water circuit (7) on the outlet side of the heat exchanger (6A), and a heat source side control device (17).
) is provided. A hot water heating device (6) is composed of a heat exchanger (6A) and a gas burner (11) as a heat source.

(18A)(18B)は暖房を必要とする室内に設置さ
れる室内機(放熱装置)であり、室内機(18A)(1
8B)には放熱器(19A>(19B)と、放熱器(1
9A>(19B)に室内空気を循環させる送風ファン(
20A>(20B)と、室温センサ(21A)(21B
>と、室内側制御装置(22A)(22B)とが内蔵さ
れ、放熱器(19A)(19B)の温水入口(23A)
(23B)と温水出口(24A)(24B)とはそれぞ
れ開閉弁(25)(26)を有する配管(27A)(2
7B) (28A>(28B)を介して熱源機(1)の
出口側ヘッダー(3)と入口側ヘッダー(2)とに接続
きれている。また、室内側制御装! (22A)(22
B)は運転スイッチ(図示せず)が投入され、かつ、室
温が設定温度より低く、サーモスイッチ(図示せず)が
オンになっているときに、送風ファン(20A)(20
B>を運転きせるとともに、熱源側制御装置(17)に
運転信号を供給するものである。また、温水回路(7)
と放熱器(19A)(19B)と配管とで温水循環回路
(C)を構成している。
(18A) (18B) is an indoor unit (heat radiator) installed in a room that requires heating.
8B) has a heatsink (19A>(19B)) and a heatsink (1
9A> (19B) is a blower fan that circulates indoor air (
20A>(20B) and room temperature sensor (21A) (21B
> and the indoor control device (22A) (22B) are built in, and the hot water inlet (23A) of the radiator (19A) (19B)
(23B) and hot water outlet (24A) (24B) are piping (27A) (2) having on-off valves (25) (26), respectively.
7B) (28A>(28B) is connected to the outlet side header (3) and inlet side header (2) of the heat source device (1). Also, the indoor control device! (22A) (22
In B), when the operation switch (not shown) is turned on, the room temperature is lower than the set temperature, and the thermo switch (not shown) is turned on,
B> and supplies an operation signal to the heat source side control device (17). Also, hot water circuit (7)
A hot water circulation circuit (C) is constituted by the radiator (19A) (19B) and piping.

熱源側制御装置(17)は第2図に示すように、予め記
憶されたプログラムに基いて循環ポンプ(5)、開閉弁
(25)(26)及びガスバーナ(11)を制御するマ
イクロコンピュータ(29) (以下マイコンという)
を有している。このマイコン(29)の入力側(11〜
I5)には室内側制御装置(22A)(22B)が運転
信号を発しているときにそれぞれオンとなるリレースイ
ッチ等の入力スイッチ(30A)(30B)と、水温セ
ンサ(16)と、フレームロッド(14)とが設けられ
ている。そして、水温センサ(16)の検出温度は比較
器(31)で2つの設定温度と比較される。すなわち、
比較器(31)は水温が60℃以下になるとH”信号を
発し、水温が80℃以上になると“L”信号を発するも
のであり、比較器(32)は水温が2℃以下になると“
H″信号を発し、水温がこれよりも高いある温度以上に
なると“L”信号を発するものであり、それぞれの信号
はマイコン(29)の入力ボート(I3)(I4)に供
給されている。また、フレームロッド(14)の電流I
は炎検出装置(34)で比較される。この炎検出装置(
34)はフレーム電流工が第1の設定値IN以上になる
と“H”信号を発し、フレーム電流IがI8よりも小さ
い■、以下になるとL”信号を発し、これらの信号をマ
イコン(29)の入力ボート(I5)に供給する。
As shown in FIG. 2, the heat source side control device (17) includes a microcomputer (29) that controls the circulation pump (5), the on-off valves (25) (26), and the gas burner (11) based on a pre-stored program. ) (hereinafter referred to as microcomputer)
have. The input side (11~) of this microcomputer (29)
I5) includes input switches (30A) (30B) such as relay switches that are turned on when the indoor control device (22A) (22B) issues an operation signal, a water temperature sensor (16), and a frame rod. (14) is provided. The temperature detected by the water temperature sensor (16) is then compared with two set temperatures by a comparator (31). That is,
The comparator (31) emits an "H" signal when the water temperature is below 60°C, and the "L" signal when the water temperature is above 80°C, and the comparator (32) produces an "H" signal when the water temperature becomes below 2°C.
It emits an "H" signal, and when the water temperature reaches a certain temperature higher than this, it emits an "L" signal, and each signal is supplied to the input ports (I3) (I4) of the microcomputer (29). Also, the current I of the frame rod (14)
are compared by a flame detection device (34). This flame detection device (
34) emits an "H" signal when the frame current I exceeds the first set value IN, and emits an "L" signal when the frame current I is smaller than I8, and sends these signals to the microcontroller (29). input port (I5).

一方、マイコン(29)の出力側(Pi〜P6)にはト
ランジスタ等の反転器よりなる5つのドライブ回路(3
5)〜(39)と、これらのドライブ回路り35〉〜(
39)によってそれぞれ通電が制御されるリレー(40
)〜(44)とが設けられている。また、比例弁(P■
)にはマイコン(29)の出力ポート(P6)から弁開
度信号が供給されている。また、(VD)及び(VC)
は直流電源である。また、マイコン(29)はタイマー
(TM)を内蔵している。
On the other hand, on the output side (Pi to P6) of the microcomputer (29), there are five drive circuits (3
5) to (39) and these drive circuits 35〉 to (
Relays (40) whose energization is controlled by respective relays (40)
) to (44) are provided. In addition, the proportional valve (P■
) is supplied with a valve opening signal from the output port (P6) of the microcomputer (29). Also, (VD) and (VC)
is a DC power supply. Furthermore, the microcomputer (29) has a built-in timer (TM).

第3図は循環ポンプ(5)、ガスバーナ(11)及び開
閉弁(25)(26)の駆動回路であり、循環ポンプ(
5)、点火装置(13)、を磁弁(12)及び開閉弁(
25)(26)がそれぞれリレー(40)〜(44〉の
リレースイッチ(401)(411>(421)(43
1)(441)を介して交流を源(45)に接続されて
いる。
Figure 3 shows the drive circuit for the circulation pump (5), gas burner (11), and on-off valves (25) and (26).
5), the ignition device (13), the magnetic valve (12) and the on-off valve (
25) (26) are relay switches (401) (411>(421) (43) of relays (40) to (44), respectively.
1) connected to an alternating current source (45) via (441).

上述した温水暖房装置の動作を第4図及び第5図を参照
して説明する。今、室内機(18A)(18B)の室内
側制御装置<22A)(22B>がともに運転信号を発
しているものとすると、入力スイッチ(30A>(30
B)はともにオンになり、直流電1(VD)の電圧がマ
イコン(29)の入力ボート(Il)(I2)に“H”
信号として供給されている。マイコン(29)は出カポ
−)(P 1 )(P 4 )(P 5 >からドライ
ブ回路(35)(38)(39)に“H”信号を発して
これらの出力をL”にし、リレー(40)(43)(4
4)に通電させる。
The operation of the hot water heating system described above will be explained with reference to FIGS. 4 and 5. Now, assuming that the indoor control devices <22A>(22B>) of the indoor units (18A) (18B) are both emitting operation signals, the input switch (30A>(30
B) are both turned on, and the voltage of DC voltage 1 (VD) becomes “H” at the input ports (Il) (I2) of the microcomputer (29).
It is supplied as a signal. The microcomputer (29) issues an "H" signal from the output ports (P 1 ) (P 4 ) (P 5 ) to the drive circuits (35), (38), and (39) to turn these outputs to L, and the relay (40) (43) (4
4) Turn on electricity.

このため、リレースイッチ(401バ431 )(44
1)が閉じ、第4図に示すように循環ポンプ(5)が運
転を行うとともに、開閉弁(25)(26)が開になる
。熱交換器(6A)の出口側の水温が低く(60℃以下
)、比較器(31〉から入力ボート(I3)へ“H″信
号が供給されている場合、マイコン(29〉は出力ポー
ト(P2)(P3)からドライブ回路(36)(37)
へ所定時間“H”信号を送り、リレー(41)(42)
に通電させることによって点火装置(13)を作動きせ
るとともに、電磁弁(12)を開にする(点火トライア
ル)。
For this reason, the relay switch (401 bar 431) (44
1) is closed, the circulation pump (5) operates as shown in FIG. 4, and the on-off valves (25) and (26) are opened. When the water temperature on the outlet side of the heat exchanger (6A) is low (below 60°C) and the “H” signal is supplied from the comparator (31> to the input boat (I3)), the microcontroller (29> P2) (P3) to drive circuit (36) (37)
Send “H” signal for a predetermined time to relays (41) (42)
The ignition device (13) is activated by energizing the ignition device (13), and the solenoid valve (12) is opened (ignition trial).

このため、ガスバーナ(11)にガスと空気の混合気体
が供給され、点火装置(13)によって着火が試みられ
る。この結果、混合気体に着火され、フレームロッド(
14)を流れる電流Iが工8以上になり、炎検出装置(
34)がマイコン(29)の入力ボート(I4)に“H
”信号を供給すると、マイコン(29)は所定時間が経
過した後も出力ポート(P3)から“H”信号を発し、
ガスバーナ(11)への燃料供給を継続させる。
Therefore, a mixture of gas and air is supplied to the gas burner (11), and ignition is attempted by the ignition device (13). As a result, the gas mixture is ignited and the flame rod (
The current I flowing through the flame detection device (
34) inputs “H” to the input port (I4) of the microcomputer (29).
"When the signal is supplied, the microcomputer (29) emits an "H" signal from the output port (P3) even after a predetermined time has elapsed,
Continue fuel supply to the gas burner (11).

このようにして、循環ポンプ(5)が運転し、ガスバー
ナ(11)で燃焼が行われると、熱交換器(6A)で加
熱された温水は配管(27A)(27B>を通って室内
機(18A>(18B)の放熱器(19A)(19B)
に送られ、ここで送風ファン(20A)(20B>によ
って循環される室内空気を加熱する。そして、熱交換を
終えた放熱器(19A)(19B)の温水は配管(28
A)(28B)を通って熱源機(1)の温水回路(7)
に戻り、温水タンク(4)に貯溜された後、熱交換器(
6A)によって再加熱される。
In this way, when the circulation pump (5) is operated and combustion is performed in the gas burner (11), the hot water heated by the heat exchanger (6A) passes through the pipes (27A) (27B>) and the indoor unit ( 18A>(18B) radiator (19A) (19B)
Here, the indoor air circulated by the blower fans (20A) (20B> is heated. After heat exchange, the hot water in the radiators (19A) (19B) is sent to the piping (28
A) Hot water circuit (7) of heat source device (1) through (28B)
After returning to the hot water tank (4) and storing it in the hot water tank (4), the heat exchanger (
6A).

このような暖房運転中に室内側制御゛装置(22A)(
22B)の何れか一方の運転信号がなくなると、その運
転信号に対応する開閉弁(25)又は開閉弁(26)が
閉じ、室内機(18A)又は室内機(18B)での暖房
運転が停止する。また、マイコン(29)の出力ポート
(P6)から比例弁(pv)に弁開度信号が送られてい
るため、ガスバーナ(11)での燃焼量は室内負荷(例
えば室内機の運転台数)等に応じて適度に加減される。
During such heating operation, the indoor control device (22A) (
22B), the on-off valve (25) or on-off valve (26) corresponding to that operating signal closes, and the heating operation in the indoor unit (18A) or indoor unit (18B) stops. do. Also, since the valve opening signal is sent from the output port (P6) of the microcomputer (29) to the proportional valve (PV), the amount of combustion in the gas burner (11) is determined by the indoor load (for example, the number of operating indoor units), etc. It will be adjusted accordingly.

また、熱交換器(6A)の出口側の水温が80°C以上
になると、比較器(32)の出力が“L”になり、マイ
コン(29)は出力ポート(P3)の信号を“L″にし
てガスバーナ(11)での燃焼を休止させる。このため
、温水循環路の温水が沸騰したり、過度に加熱されるの
を防止できる。
Furthermore, when the water temperature on the outlet side of the heat exchanger (6A) reaches 80°C or higher, the output of the comparator (32) becomes "L", and the microcomputer (29) changes the signal of the output port (P3) to "L". '' to stop combustion in the gas burner (11). Therefore, the hot water in the hot water circulation path can be prevented from boiling or being excessively heated.

運転信号がなくなり、入力スイッチ(30A)(30B
)がともに開になると、マイコン(29)は循環ポンプ
(5)及びガスバーナ(11)の運転を停止させ、開閉
弁(25)(26)を閉にする。また、このような暖房
運転停止中において、マイコン(29)は水温センサ(
16)の検出温度に応じて次のような凍結防止運転制御
を行う(第5図参照)。すなわち、冬期等において、外
気温の低下に伴って水温センサ(16)の検出温度が2
℃以下になり、比較器(32)が“H″信号を発すると
、マイコン(29)は出力ポート(Pl)(P4)(P
5)の信号を“H”にし、循環ポンプ(5)を運転させ
るとともに、開閉弁(25)(26)を開にする。また
、出力ポート(P2)(P3)の信号を“H”にし、暖
房時と同し順序でガスバーナ(11)に燃焼を行わせる
。そして、比例弁(pv)にも弁開度信号を送り、ガス
バーナ(11)での燃焼が例えば1台暖房運転時と同し
弱燃焼になるようにする。さらにまた、内蔵するタイマ
ー(TM)を作動させる。このため、温水加熱装置(6
)で適度に温められた温水が温水循環回路(C)全体に
供給されるようになる。そして、凍結防止運転の開始か
ら所定時間(例えば数分間)が経過してタイマー(TM
)がタイムアツプすると、マイコン(29)は出力ポー
ト(Pl)〜(P5)の信号を全て“L”にし、凍結防
止運転を終了きせる。このとき、水濡センサ(16)の
検出温度はかなり高くなっており、比較器(32)は“
L”信号を発しているため、マイコン(29)は次の凍
結防止運転に備えるようになる。もちろん、上述した凍
結防止運転中に室内側制御装置(22A)(22B>か
ら運転信号が発せられた場合にはその時点で凍結防止運
転が中止され、運転信号の数に応じた暖房運転に移行す
る。
There is no operation signal and the input switch (30A) (30B
) are both opened, the microcomputer (29) stops the operation of the circulation pump (5) and gas burner (11), and closes the on-off valves (25) and (26). In addition, during such a heating operation stop, the microcomputer (29) detects the water temperature sensor (
16) The following antifreeze operation control is performed according to the detected temperature (see Figure 5). That is, in winter, etc., the temperature detected by the water temperature sensor (16) decreases by 2 as the outside temperature decreases.
℃ or below and the comparator (32) issues an "H" signal, the microcomputer (29) outputs the output ports (Pl) (P4) (P
Set the signal 5) to "H" to operate the circulation pump (5) and open the on-off valves (25) and (26). Further, the signals of the output ports (P2) and (P3) are set to "H" to cause the gas burner (11) to perform combustion in the same order as during heating. Then, a valve opening signal is also sent to the proportional valve (PV) so that the combustion in the gas burner (11) is weak, for example, the same as when one unit is in heating operation. Furthermore, the built-in timer (TM) is activated. For this reason, a hot water heating device (6
) is supplied to the entire hot water circulation circuit (C). Then, after a predetermined period of time (for example, several minutes) has elapsed since the start of the antifreeze operation, a timer (TM) is activated.
) times up, the microcomputer (29) sets all the signals at the output ports (Pl) to (P5) to "L" and ends the antifreeze operation. At this time, the temperature detected by the water wetness sensor (16) is quite high, and the comparator (32)
Since the microcomputer (29) is emitting the "L" signal, the microcomputer (29) prepares for the next anti-freeze operation. Of course, during the above-mentioned anti-freeze operation, the operation signal is emitted from the indoor control device (22A) (22B>). In this case, the antifreeze operation is stopped at that point, and the heating operation is started according to the number of operation signals.

本実施例によれば、暖房運転停止中で、かつ、水温セン
サ(16〉の検出温度が所定温度(例えば2’C)以下
のときに循環ポンプ(5)及びガスバーナ(11)を作
動させて凍結防止運転を開始させ、この凍結防止運転が
所定時間(例えば数分間)行われるようにしたので、タ
イマー(TM)の時間設定を配管長さ等に応じて適度に
調整しつつ、凍結危険時には温水循環回路(C)全体に
温水がくまなく行渡るようにできる。このため、温水循
環回路(C)での凍結を確実に防止できるばかりでなく
、凍結防止運転を頻繁に繰返さないようにでき、凍結防
止運転を必要最小限に抑え、エネルギーを節約すること
もできる。また、凍結防止運転中はガスバーナ(11)
での燃焼が弱燃焼になるようにしたので、水温が過度に
上昇しないようにして効率の良い凍結防止運転を行うこ
とができ、凍結防止運転中に室内側制御装置(22A)
(22B>から運転信号が発せられた場合にはその時点
で凍結防止運転が中止され、運転信号に応じた暖房運転
が行われるようにしたので、温水循環回路(C)での凍
結を確実に防止しつつ、快適な温水暖房を行うことがで
きる。
According to this embodiment, the circulation pump (5) and the gas burner (11) are operated when the heating operation is stopped and the temperature detected by the water temperature sensor (16) is below a predetermined temperature (for example, 2'C). Since the anti-freeze operation is started and the anti-freeze operation is performed for a predetermined period of time (for example, several minutes), the time setting of the timer (TM) can be adjusted appropriately depending on the pipe length, etc., and when there is danger of freezing, Hot water can be distributed throughout the hot water circulation circuit (C).This not only reliably prevents freezing in the hot water circulation circuit (C), but also prevents frequent repetition of antifreeze operation. , it is also possible to save energy by minimizing antifreeze operation.Also, during antifreeze operation, the gas burner (11)
Since the combustion at
(If an operation signal is issued from 22B>, the antifreeze operation is stopped at that point, and the heating operation is performed according to the operation signal, so that freezing in the hot water circulation circuit (C) is ensured.) Comfortable hot water heating can be performed while preventing this.

尚、上述した実施例では、温水加熱装置(6)の熱源と
してガスバーナ(11)を使用したが、熱源としては他
に石油バーナや電気ヒータ等が使用可能である。
In the above-described embodiment, the gas burner (11) was used as the heat source of the hot water heating device (6), but other heat sources such as an oil burner or an electric heater can be used.

(ト)発明の効果 この発明は以上のように構成きれているので、凍結危険
時には温水循環回路に必要十分な温水が供給され、温水
循環回路での凍結を確実に防止するとかできるばかりで
なく、循環ポンプ及び熱源が頻繁に発停しないようにし
て装置の耐久性を高めることができ、さらにはエネルギ
ーが無駄に使われないようにでき、省エネルギー化に貢
献できるものである。
(G) Effects of the Invention Since this invention is configured as described above, in the event of danger of freezing, necessary and sufficient hot water is supplied to the hot water circulation circuit, and freezing in the hot water circulation circuit can be reliably prevented. By preventing the circulation pump and heat source from starting and stopping frequently, the durability of the device can be increased, and furthermore, energy can be prevented from being wasted, contributing to energy conservation.

【図面の簡単な説明】[Brief explanation of the drawing]

図は何れもこの発明の一実施例に関するものであり、第
1図は温水暖房装置の配管系統図、第2図は熱源側制御
装置の制御系統説明図、第3図は循環ポンプ、ガスバー
ナ及び開閉弁を駆動する回路の電気回路図、第4図は暖
房運転中における動作説明用のフローチャート、第5図
は凍結防止運1中における動作説明用のフローチャート
である。 (C)・・・温水循環回路、 (5)・・・循環ポンプ
、(6)・・・温水加熱装置、 (11)・・・ガスバ
ーナ(熱源)、 (16)・・・水温センサ、 (18
A)(18B)・・・室内機(放熱装置)、 (29)
・・・マイクロコンピュータ(凍結防止制御手段)。
The figures are all related to one embodiment of the present invention, and Fig. 1 is a piping system diagram of a hot water heating system, Fig. 2 is an explanatory diagram of a control system of a heat source side control device, and Fig. 3 is a diagram showing a circulation pump, gas burner, and FIG. 4 is a flowchart for explaining the operation during the heating operation, and FIG. 5 is a flowchart for explaining the operation during the antifreeze operation 1. (C)...Hot water circulation circuit, (5)...Circulation pump, (6)...Hot water heating device, (11)...Gas burner (heat source), (16)...Water temperature sensor, ( 18
A) (18B)...Indoor unit (heat dissipation device), (29)
...Microcomputer (freezing prevention control means).

Claims (1)

【特許請求の範囲】[Claims] (1)熱源を有する温水加熱装置と循環ポンプと放熱装
置とを管路で接続した温水循環回路を形成し、放熱装置
側の運転信号によって循環ポンプ及び熱源を作動させる
ようにした温水暖房装置において、温水循環回路の水温
を検出する水温センサと、運転信号がないときで、かつ
、水温センサの検出温度が所定温度以下のときに循環ポ
ンプ及び熱源を作動させ、循環ポンプ及び熱源の作動開
始時点から所定時間後に循環ポンプ及び熱源を停止させ
る凍結防止制御手段とを備えたことを特徴とする温水暖
房装置。
(1) In a hot water heating device in which a hot water circulation circuit is formed by connecting a hot water heating device having a heat source, a circulation pump, and a heat radiating device through a pipe, and the circulation pump and the heat source are operated by an operation signal from the heat radiating device. , a water temperature sensor that detects the water temperature of the hot water circulation circuit, and when there is no operation signal and the temperature detected by the water temperature sensor is below a predetermined temperature, activates the circulation pump and heat source, and when the circulation pump and heat source start operating. What is claimed is: 1. A hot water heating device comprising: antifreeze control means for stopping a circulation pump and a heat source after a predetermined period of time.
JP2259183A 1990-09-27 1990-09-27 Hot-water heating apparatus Pending JPH04136627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2259183A JPH04136627A (en) 1990-09-27 1990-09-27 Hot-water heating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2259183A JPH04136627A (en) 1990-09-27 1990-09-27 Hot-water heating apparatus

Publications (1)

Publication Number Publication Date
JPH04136627A true JPH04136627A (en) 1992-05-11

Family

ID=17330524

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2259183A Pending JPH04136627A (en) 1990-09-27 1990-09-27 Hot-water heating apparatus

Country Status (1)

Country Link
JP (1) JPH04136627A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007107743A (en) * 2005-10-11 2007-04-26 Matsushita Electric Ind Co Ltd Water heater
CN111396979A (en) * 2020-03-27 2020-07-10 广东万家乐燃气具有限公司 Central hot water system and rapid preheating method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007107743A (en) * 2005-10-11 2007-04-26 Matsushita Electric Ind Co Ltd Water heater
CN111396979A (en) * 2020-03-27 2020-07-10 广东万家乐燃气具有限公司 Central hot water system and rapid preheating method thereof

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