JP2589113B2 - Snow melting equipment - Google Patents

Snow melting equipment

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Publication number
JP2589113B2
JP2589113B2 JP31931387A JP31931387A JP2589113B2 JP 2589113 B2 JP2589113 B2 JP 2589113B2 JP 31931387 A JP31931387 A JP 31931387A JP 31931387 A JP31931387 A JP 31931387A JP 2589113 B2 JP2589113 B2 JP 2589113B2
Authority
JP
Japan
Prior art keywords
hot water
temperature
radiator
snow melting
heat source
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 - Lifetime
Application number
JP31931387A
Other languages
Japanese (ja)
Other versions
JPH01163374A (en
Inventor
八郎 竹見
昇三 加藤
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 Denki Co Ltd
Original Assignee
Sanyo Denki Co Ltd
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Filing date
Publication date
Application filed by Sanyo Denki Co Ltd filed Critical Sanyo Denki Co Ltd
Priority to JP31931387A priority Critical patent/JP2589113B2/en
Publication of JPH01163374A publication Critical patent/JPH01163374A/en
Application granted granted Critical
Publication of JP2589113B2 publication Critical patent/JP2589113B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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 本発明は屋根等へ温水を循環して雪を溶かす融雪装置
に関する。
The present invention relates to a snow melting apparatus that circulates hot water to a roof or the like to melt snow.

(ロ)従来の技術 例えば、特開昭61−233157号公報には屋根裏に温風供
給器を設け、且つ屋根の軒先部分に電気ヒータ等の加熱
器を組み込み、雪センサにより検出される雪の量に応じ
て温風供給器及び加熱器の出力をコントローラにより変
化させる屋根の融雪装置が開示されている。
(B) Conventional technology For example, in Japanese Patent Application Laid-Open No. 61-233157, a hot air supply device is provided in the attic, and a heater such as an electric heater is incorporated in the roof eaves portion. A roof snow melting apparatus is disclosed in which the output of a hot air supply and a heater is changed by a controller according to the amount.

(ハ)発明が解決しようとする問題点 上記従来の技術において、積雪地帯において、それぞ
れの家の融雪を行うため、それぞれの家毎に温風供給器
及び加熱器を設けた場合、温風供給器に故障が発生した
場合には、屋根全面の融雪が不可能になり屋根の雪の量
が次第に増加するという虞れがあった。又、例えば3万
Kcal/hの給湯機を熱源として温水循環回路を構成し、放
熱部を屋根に配設し、給湯機の運転、停止により放熱部
への温水循環を制御して融雪を行った場合、夜間にも給
湯機の運転と停止との切換えが行われ、運転開始時に発
生する騒音によって安眠が妨げられるという問題が発生
していた。
(C) Problems to be Solved by the Invention In the above-mentioned conventional technique, in a snowy area, in order to melt snow in each house, when a hot air supply device and a heater are provided in each house, hot air supply is performed. If a failure occurs in the vessel, there is a possibility that snow melting on the entire roof becomes impossible and the amount of snow on the roof gradually increases. Also, for example, 30,000
Kcal / h hot water heater is used as a heat source to construct a hot water circulation circuit, a radiator is installed on the roof, and when the hot water heater is started and stopped, the hot water circulation to the radiator is controlled to melt snow at night. Also, the operation of the water heater is switched between operation and stop, and there has been a problem that the noise generated at the start of operation hinders sleep.

本発明は熱源機故障により融雪運転が不可能になるこ
とろ防止すると共に、融雪運転による夜間の騒音を防止
することを目的とする。
SUMMARY OF THE INVENTION It is an object of the present invention to prevent the snow melting operation from becoming impossible due to the failure of the heat source device and to prevent nighttime noise caused by the snow melting operation.

(ニ)問題点を解決するための手段 本発明は上記問題点を解決するために、熱源機から放
熱器へ温水を循環して融雪運転を行う融雪装置におい
て、熱出力が変化する少なくとも1台の比例制御熱源機
(比例制御給湯機)(1)を含む複数台の熱源機(給湯
機)(1),(2),(3)と、放熱器(4)へ供給さ
れる温水の温度を検出する湯温検出器(11)と、湯温検
出器(11)の検出温度と温水の設定温度との差温に応じ
て比例制御熱源機(1)の熱出力を優先的に制御し、次
いで他の熱源機(2),(3)の発停を制御する運転制
御装置(12)を備えたものである。
(D) Means for Solving the Problems In order to solve the above problems, the present invention provides a snow melting apparatus that circulates hot water from a heat source device to a radiator to perform a snow melting operation. Heat source units (water heaters) (1), (2), (3) including the proportional control heat source unit (proportional control water heater) (1), and the temperature of hot water supplied to the radiator (4) Temperature detector (11) for detecting the temperature, and the heat output of the proportional control heat source unit (1) is preferentially controlled according to the temperature difference between the detected temperature of the hot water temperature detector (11) and the set temperature of the hot water. And an operation control device (12) for controlling the start and stop of the other heat source devices (2) and (3).

(ホ)作用 融雪運転時、湯温検出器(11)の検出温度と温水の設
定温度との差温に応じて運転制御装置(12)が、まず比
例制御熱源機(1)の熱出力を変化させ、温水の温度を
略一定に保つ。このとき、他の熱源機(2),(3)の
運転状態はそのままである。そして比例制御熱源機
(1)の熱出力が最大値又は最小値まで変化したにもか
かわらず温水の温度と設定温度との差が大きくなったと
きに運転制御装置(12)により他の熱源機(2),
(3)の発停が制御されるため、他の熱源機(2),
(3)の発停の切換え回数の低減を図り、発停の切換え
時に発生する騒音が低減される。又、熱源機(1),
(2),(3)のうちいずれか1台の熱源機が故障によ
り停止した場合にも、他の熱源機の運転により融雪運転
が可能である。
(E) Operation During the snow melting operation, the operation control device (12) first controls the heat output of the proportional control heat source unit (1) according to the difference between the temperature detected by the hot water temperature detector (11) and the set temperature of the hot water. And keep the temperature of the hot water approximately constant. At this time, the operating states of the other heat source units (2) and (3) remain unchanged. When the difference between the temperature of the hot water and the set temperature increases even though the heat output of the proportional control heat source device (1) has changed to the maximum value or the minimum value, the operation control device (12) sets another heat source device. (2),
Since the start / stop of (3) is controlled, other heat source units (2),
(3) The number of times of switching between start and stop is reduced, and noise generated at the time of switching between start and stop is reduced. In addition, heat source unit (1),
Even if any one of the heat source units (2) and (3) is stopped due to a failure, the snow melting operation can be performed by operating the other heat source units.

(ヘ)実施例 以下本発明の一実施例を図面に基づいて詳細に説明す
る。
(F) Embodiment One embodiment of the present invention will be described below in detail with reference to the drawings.

第1図において、(1)は熱出力(能力)が例えば6,
000乃至30,000Kcal/hの間で変化する比例制御給湯機
(比例制御熱源機)、(2)、及び(3)は熱出力が例
えば30,000Kcal/hの第1、第2貯湯式給湯機(熱源機)
であり、それぞれの給湯機(1),(2),(3)は融
雪運転と台所等への給湯に兼用されるものである。又、
(4)は例えば家屋の屋根に設けられた放熱器である。
(7)は循環ポンプであり、この循環ポンプ(7)と放
熱器(14)との間には往き管(5)、及び復管(6)が
接続されている。ここで、往き管(5)には第1、第
2、及び第3オリフィス(10A),(10B)、及び(10
C)が設けられ、それぞれの給湯機(1),(2),
(3)が往き管(5)に接続されている。又、それぞれ
の給湯機(1),(2),(3)の間の往き管(5)を
第1、第2往き管(5A),(5B)とし、第2貯湯式給湯
機(3)と放熱器(4)との間の往き管(5)を第3往
き管(5C)とする。
In FIG. 1, (1) indicates that the heat output (capacity) is, for example, 6,
The proportionally controlled water heater (proportionally controlled heat source unit), which varies between 000 and 30,000 Kcal / h, (2) and (3) are first and second hot water storage type water heaters having a heat output of, for example, 30,000 Kcal / h ( Heat source machine)
Each of the hot water heaters (1), (2), and (3) is used for both snow melting operation and hot water supply to a kitchen or the like. or,
(4) is a radiator provided on the roof of a house, for example.
(7) is a circulation pump, and an outgoing pipe (5) and a return pipe (6) are connected between the circulation pump (7) and the radiator (14). Here, the first, second, and third orifices (10A), (10B), and (10
C) is provided, and each water heater (1), (2),
(3) is connected to the outgoing pipe (5). The outgoing pipes (5) between the respective hot water heaters (1), (2) and (3) are first and second outgoing pipes (5A) and (5B), and the second hot water storage type hot water heater (3 ) And the radiator (4) are referred to as a third going pipe (5C).

(8)は例えば大気中に赤外線を拡散し、雪片で反射
された赤外線を受光する降雪センサ、(17)は屋外に設
けられた外気温サーモ、(11)は第3往き管(5C)に設
けられた湯温検出器である。(12)はマイコン等により
構成された融雪装置の運転制御装置であり、この運転制
御装置(12)の動作により比例制御給湯機(1)、第
1、第2貯湯式給湯機(2),(3)、及び循環ポンプ
(7)の運転が制御される。
(8) is, for example, a snowfall sensor that diffuses infrared rays into the atmosphere and receives infrared rays reflected by snowflakes, (17) is an outside temperature thermometer provided outdoors, and (11) is a third going pipe (5C). It is a hot water temperature detector provided. (12) is an operation control device of the snow melting device constituted by a microcomputer or the like. The operation of the operation control device (12) causes a proportional control water heater (1), first and second hot water storage type water heaters (2), (3) The operation of the circulation pump (7) is controlled.

第2図は上記運転制御装置の概略回路図である。そし
て、電源ライン(13),(14)のうち、電源ライン(1
3)に降雪センサ(8)の降雪スイッチ(8S)と手動ス
イッチ(35)との並列回路が設けられている。又、電源
ライン(13),(14)間には、降雪検知リレーコイル
(以下第1リレーコイルという)(16)が接続され、さ
らに、外気温サーモ(17)と能力切換リレーコイル(以
下第2リレーコイルという)(18)との直列回路が接続
されている。(20)は融雪装置の運転制御回路であり、
電源ライン(21),(22)間には、第1公設検知リレー
スイッチ(以下第1リレースイッチという)(231)と
循環ポンプ(7)との直列回路が接続されている。又、
電源ライン(21),(22)間には第1リレースイッチ
(232)と比例制御給湯機運転回路(以下第1運転回路
という)(24)との直列回路、第1リレースイッチ(23
3)と第1貯湯式給湯機運転回路(以下第2運転回路と
いう)(25)との直列回路、第1リレースイッチ(23
4)と第2貯湯式給湯機運転回路(以下第3運転回路と
いう)(26)との直列回路、湯温検出器(11)の温度信
号に応じて動作して第1、第2、及び第3運転回路(2
4),(25)、及び(26)へ運転信号を出力する運転制
御回路(27)とが接続されている。又、第1、第2、及
び第3運転回路(24),(25)及び(26)にはそれぞれ
能力切換用の第1抵抗(301),(302),(303)、及
び第2抵抗(311),(312),(313)が接続され、各
第1抵抗(301),(302),(303)に能力切換リレー
スイッチ(以下第2リレースイッチという)(321),
(322),(323)が並列接続されている。ここで、比例
制御給湯機(1)、第1、第2貯湯式給湯機(2),
(3)の能力(熱出力)は第2リレーコイル(18)が非
通電で第2リレースイッチ(321),(322),(323)
がオフのとき小さく、又第2リレーコイル(18)が通電
されて第2リレースイッチ(321),(322),(323)
のオンのとき大きく設定される。又、放熱器(4)に供
給される温水の温度は第2リレーコイル(18)の通電、
非通電に基づく運転制御回路(27)の動作により外気温
が0℃以下のときは高く(例えば40℃)外気温が0℃よ
り高いときは低く(例えば30℃)に設定される。
FIG. 2 is a schematic circuit diagram of the operation control device. Then, of the power supply lines (13) and (14), the power supply line (1
In 3), a parallel circuit of a snow switch (8S) of the snow sensor (8) and a manual switch (35) is provided. A snowfall detection relay coil (hereinafter referred to as a first relay coil) (16) is connected between the power supply lines (13) and (14), and an outside temperature thermometer (17) and a capacity switching relay coil (hereinafter referred to as a first relay coil). A series circuit with (18) is connected. (20) is an operation control circuit of the snow melting device,
A series circuit of a first public detection relay switch (hereinafter, referred to as a first relay switch) (231) and a circulation pump (7) is connected between the power supply lines (21) and (22). or,
A series circuit of a first relay switch (232) and a proportional control water heater operation circuit (hereinafter referred to as a first operation circuit) (24) between the power supply lines (21) and (22), and a first relay switch (23)
3) and a first hot water heater operation circuit (hereinafter referred to as a second operation circuit) (25) in series with a first relay switch (23).
4) and a series circuit of a second hot water storage type water heater operation circuit (hereinafter referred to as a third operation circuit) (26), and operates in accordance with the temperature signal of the hot water temperature detector (11) to operate the first, second, and third circuits. Third operation circuit (2
An operation control circuit (27) for outputting an operation signal to 4), (25), and (26) is connected. The first, second, and third operation circuits (24), (25), and (26) have first resistances (301), (302), (303) for capacity switching, and second resistances, respectively. (311), (312), and (313) are connected, and each of the first resistors (301), (302), and (303) is connected to a capability switching relay switch (hereinafter, referred to as a second relay switch) (321),
(322) and (323) are connected in parallel. Here, the proportional control water heater (1), the first and second hot water storage type water heaters (2),
The capacity (heat output) of (3) is such that the second relay coil (18) is not energized and the second relay switches (321), (322), (323)
Is small when the switch is off, and the second relay coil (18) is energized and the second relay switches (321), (322), (323)
It is set large when is turned on. The temperature of the hot water supplied to the radiator (4) is determined by the energization of the second relay coil (18),
By the operation of the operation control circuit (27) based on the non-energization, the temperature is set high (for example, 40 ° C) when the outside air temperature is 0 ° C or less, and set low (for example, 30 ° C) when the outside air temperature is higher than 0 ° C.

以下、上記融雪装置の動作について説明する。冬期に
降雪が始まると、降雪センサ(8)が降雪を検出して降
雪スイッチ(8S)がオンする。そして、降雪スイッチ
(8)のオンにより第1リレーコイル(16)が通電さ
れ、各第1リレースイッチ(231),(232),(23
3),(234)がオンする。又、外気温が低く例えば0℃
以下のときには外気温サーモ(17)がオンしており、第
2リレーコイル(18)に通電される。そして、各第2リ
レースイッチ(321),(322),(323)がオンし、各
給湯機(1),(2),(3)の能力は大きく設定され
る。又、運転制御回路(27)の動作により、放熱器
(4)に供給される温水の温度が高く設定される。各第
1リレースイッチ(231),(232),(233),(234)
のオンにより、循環ポンプ(7)が通電されて運転を開
始すると共に、第1、第2、及び第3運転回路(24),
(25)、及び(26)が通電され、運転制御回路(27)か
らの運転信号に基づいて動作する。そして、各給湯機
(1),(2),(3)は運転を開始する。各給湯機
(1),(2),(3)の運転により、放熱器(4)へ
供給される温水の温度が次第に上昇する。ここで、循環
ポンプ(7)から流出した温水の一部が比例制御給湯機
(1)へ流れ、温度上昇した温水が第1往き管(5A)に
戻される。そして、第1オリフィス(10A)を通って来
た温水と比例制御給湯機(1)から流れて来た温水とが
合流して例えば30℃の温水が第1往き管(5A)を矢印に
て示した方向へ流れる。次に、第1往き管(5A)を流れ
て来た温水の一部が第1貯湯式給湯機(2)へ流れ、温
度上昇した温水が第2往き管(5B)に戻される。そし
て、第2オリフィス(10B)を通って来た温水と第1貯
湯式給湯機(2)から流れて来た温水とが合流して例え
ば34℃の温水が第2往き管(5B)を矢印にて示した方向
へ流れる。次に、第2往き管(5B)を流れて来た温水の
一部が第2貯湯式給湯機(3)へ流れ、温度上昇した温
水が第3往き管(5C)に戻される。そして、第3オリフ
ィス(10C)を通って来た温水と第2貯湯式給湯機
(3)から流れて来た温水とが合流して例えば38℃の温
水が第3往き管(5C)を通って放熱器(4)へ流れる。
この結果、放熱器(4)の作用により、屋根に積った雪
が次第に融ける。
Hereinafter, the operation of the snow melting apparatus will be described. When snowfall starts in winter, the snowfall sensor (8) detects snowfall and the snowfall switch (8S) is turned on. When the snow switch (8) is turned on, the first relay coil (16) is energized, and the first relay switches (231), (232), (23) are turned on.
3), (234) turn on. Also, if the outside air temperature is low, for example, 0 ° C
In the following cases, the outside temperature thermo (17) is on, and the second relay coil (18) is energized. Then, each of the second relay switches (321), (322), and (323) is turned on, and the capacity of each of the water heaters (1), (2), and (3) is set to be large. The temperature of the hot water supplied to the radiator (4) is set high by the operation of the operation control circuit (27). Each first relay switch (231), (232), (233), (234)
Is turned on, the circulation pump (7) is energized to start operation, and the first, second, and third operation circuits (24),
(25) and (26) are energized and operate based on the operation signal from the operation control circuit (27). Then, each of the water heaters (1), (2), and (3) starts operating. The operation of each of the water heaters (1), (2) and (3) gradually increases the temperature of the hot water supplied to the radiator (4). Here, a part of the hot water flowing out of the circulation pump (7) flows to the proportional control water heater (1), and the warm water whose temperature has risen is returned to the first going pipe (5A). Then, the hot water flowing through the first orifice (10A) and the hot water flowing from the proportional control water heater (1) merge, and for example, hot water of 30 ° C. flows through the first going pipe (5A) through an arrow. It flows in the direction shown. Next, a part of the hot water flowing through the first going pipe (5A) flows to the first hot water storage type water heater (2), and the warm water whose temperature has risen is returned to the second going pipe (5B). Then, the hot water flowing through the second orifice (10B) and the hot water flowing from the first hot water supply type water heater (2) merge, and for example, hot water of 34 ° C. flows through the second going pipe (5B). Flows in the direction indicated by. Next, a part of the hot water flowing through the second outgoing pipe (5B) flows into the second hot water supply type water heater (3), and the warm water whose temperature has risen is returned to the third outgoing pipe (5C). Then, the hot water flowing through the third orifice (10C) and the hot water flowing from the second hot water supply type water heater (3) are merged, and for example, hot water of 38 ° C. passes through the third going pipe (5C). To the radiator (4).
As a result, the snow on the roof gradually melts due to the action of the radiator (4).

以後、比例制御給湯機(1)、及び第1、第2貯湯式
給湯機(2),(3)から往き管(5)へ流れる温水の
温度が上昇し、第3図に示したように放熱器(4)へ供
給される温水の温度が上昇する。そして、温水の温度が
上昇して設定温度(例えば40℃)になったことを湯温検
出器(11)が検出すると、制御回路(27)が動作して第
1運転回路(24)へ温水の温度に応じて能力を変化させ
る比例信号を出力する。そして、比例制御給湯機(1)
が比例運転を開始する。その後、比例制御給湯機(1)
の熱出力が最低になったにもかかわらず、放熱器(4)
へ供給される温水の温度が上昇して上限温度(例えば45
℃)になったことを湯温検出器(11)が検出すると、運
転制御回路(27)が動作して第3運転回路(26)へ運転
停止信号を出力する。そして、第2貯湯式給湯機(3)
が運転を停止する。第2貯湯式給湯機(3)が運転を停
止して放熱器(4)へ供給される温水の温度が低下する
と、運転制御回路(27)が第1運転回路(24)へ出力す
る比例信号に基づいて第1運転回路(24)が動作し、比
例制御給湯機(1)の能力が上昇する。以後、比例制御
給湯機(1)の能力変化により放熱器(4)に供給され
る温水温度が略設定温度に保たれる。尚、融雪運転開始
時の放熱器(4)への温水温度、及び各給湯機(1),
(2),(3)の運転状態は例えば第3図、及び第4図
に示したように変化する。
Thereafter, the temperature of the hot water flowing from the proportional control water heater (1) and the first and second hot water storage type water heaters (2) and (3) to the outflow pipe (5) rises, as shown in FIG. The temperature of the hot water supplied to the radiator (4) rises. When the hot water temperature detector (11) detects that the temperature of the hot water has risen to the set temperature (for example, 40 ° C.), the control circuit (27) operates to send the hot water to the first operation circuit (24). And outputs a proportional signal that changes the capacity in accordance with the temperature of. And the proportional control water heater (1)
Starts proportional operation. Then, the proportional control water heater (1)
Radiator (4) despite the lowest heat output
Temperature of the hot water supplied to the
° C), the operation control circuit (27) operates and outputs an operation stop signal to the third operation circuit (26). And the second hot water storage type water heater (3)
Stops driving. When the temperature of the hot water supplied to the radiator (4) drops due to the stop of the operation of the second hot-water storage type water heater (3), the operation control circuit (27) outputs a proportional signal output to the first operation circuit (24). , The first operation circuit (24) operates, and the capacity of the proportional control water heater (1) increases. Thereafter, the temperature of the hot water supplied to the radiator (4) is maintained at substantially the set temperature due to a change in the capacity of the proportional control water heater (1). Incidentally, the temperature of the hot water to the radiator (4) at the start of the snow melting operation, and the water heaters (1),
The operation states (2) and (3) change as shown in FIGS. 3 and 4, for example.

時間が経過し、外気温度が上昇して例えば0℃より高
くなると、外気温サーモ(17)がオフし、第2リレーコ
イル(18)が非通電になる。そして、第2リレースイッ
チ(321),(322),(323)がオフし、第1、第2、
及び第3運転回路(24),(25)、及び(26)が動作
し、各給湯機(1),(2),(3)の能力が大から小
へ切換わる。ここで、比例制御給湯機(1)の能力の上
限が例えば15,000Kcal/hになり、第1、第2貯湯式給湯
機(2),(3)の能力の上限が例えば15,000Kcal/hに
なる。又、運転制御回路(27)が動作して放熱器(4)
に供給される温水の温度が低く設定される。そして、各
給湯機(1),(2),(3)の運転が運転制御回路
(27)からの運転停止信号を入力して動作する第1、第
2、及び第3運転回路(24),(25)、及び(26)によ
り制御される。その後、放熱器(4)に供給される温水
の温度が上昇して比例制御給湯機(1)の能力が最低に
なり、さらに温水の温度が上昇して上限温度になったこ
とを湯温検出器(11)が検出すると、運転制御回路(2
7)が動作して第2運転回路(25)へ運転停止信号を出
力する。そして第2運転回路(25)の動作により第1貯
湯式給湯機(2)が運転を停止する。
When time elapses and the outside air temperature rises and becomes higher than 0 ° C., for example, the outside air temperature thermometer (17) is turned off, and the second relay coil (18) is de-energized. Then, the second relay switches (321), (322), (323) are turned off, and the first, second,
And the third operation circuits (24), (25), and (26) are operated, and the capacity of each of the water heaters (1), (2), (3) is switched from large to small. Here, the upper limit of the capacity of the proportional control water heater (1) is, for example, 15,000 Kcal / h, and the upper limit of the capacity of the first and second hot water storage type water heaters (2, 3) is, for example, 15,000 Kcal / h. Become. Also, the operation control circuit (27) operates and the radiator (4)
The temperature of the hot water supplied to is set low. First, second, and third operation circuits (24) in which the operation of each of the water heaters (1), (2), (3) is operated by inputting an operation stop signal from the operation control circuit (27). , (25), and (26). Thereafter, the temperature of the hot water supplied to the radiator (4) rises, the capacity of the proportional control water heater (1) becomes the lowest, and the temperature of the hot water further rises to the upper limit temperature. The operation control circuit (2
7) operates and outputs an operation stop signal to the second operation circuit (25). The operation of the second operation circuit (25) stops the operation of the first hot water supply type water heater (2).

第1、第2貯湯式給湯機(2),(3)が運転を停止
した以後は第1運転回路(24)が運転制御回路(27)か
らの比例信号に基づいて動作し、比例制御給湯機(1)
の能力変化により放熱器(4)に供給される温水の温度
が略一定に保たれる。その後、外気温が低下して0℃以
下になると外気温サーモ(17)がオンし、第2リレース
イッチ(321),(322),(323)がオンする。そし
て、各給湯機(1),(2),(3)の能力が小から大
へ切換わると共に、放熱器(4)に供給される温水の温
度が高く設定される。又、降雪量の増加等により放熱器
(4)からの放熱量が増加し、放熱器(4)に供給され
る温水の温度が低下すると、それに伴い比例制御給湯機
(1)の能力が上昇する。そして、比例制御給湯機
(1)の能力が最大になったにもかかわらず放熱器
(4)に供給される温水の温度が下限温度(例えば35
℃)になると、運転制御回路(27)が第2運転回路(2
5)へ運転信号を出力する。すると、第1貯湯式給湯機
(2)が運転を開始し、以後、放熱器(4)への温水温
度の変化に伴い比例制御給湯機(1)の能力が変化し、
温水の温度が略一定に保たれる。
After the first and second hot-water storage type water heaters (2) and (3) stop operating, the first operation circuit (24) operates based on the proportional signal from the operation control circuit (27), and performs proportional control hot water supply. Machine (1)
The temperature of the hot water supplied to the radiator (4) is kept substantially constant by the change of the capacity of the radiator. Thereafter, when the outside air temperature decreases to 0 ° C. or less, the outside air temperature thermo (17) is turned on, and the second relay switches (321), (322), and (323) are turned on. Then, the capacity of each of the water heaters (1), (2), (3) is switched from small to large, and the temperature of the hot water supplied to the radiator (4) is set high. When the amount of heat radiation from the radiator (4) increases due to an increase in the amount of snowfall and the temperature of the hot water supplied to the radiator (4) decreases, the capacity of the proportional control water heater (1) increases accordingly. I do. Then, even though the capacity of the proportional control water heater (1) is maximized, the temperature of the hot water supplied to the radiator (4) is reduced to the lower limit temperature (for example, 35 ° C).
° C), the operation control circuit (27) switches to the second operation circuit (2
Output the operation signal to 5). Then, the first hot water storage type water heater (2) starts operating, and thereafter, the capacity of the proportional control water heater (1) changes with the change of the hot water temperature to the radiator (4),
The temperature of the hot water is kept substantially constant.

その後、さらに降雪量の増加、及び外気温度の低下等
により放熱器(4)からの放熱量が増加し、戻り湯温が
低下して放熱器(4)に供給される温水の温度が下限温
度になると、運転制御回路(27)が第3運転回路(26)
へ運転信号を出力する。すると第2貯湯式給湯機(3)
が運転を開始し、以後、比例制御給湯機(1)の能力が
変化して、放熱器(4)への温水温度が略一定に保たれ
る。
Thereafter, the amount of heat radiation from the radiator (4) increases due to a further increase in the amount of snowfall and a decrease in the outside air temperature, and the temperature of the hot water supplied to the radiator (4) decreases as the return hot water temperature decreases. , The operation control circuit (27) switches to the third operation circuit (26).
Outputs the operation signal to. Then the second hot water storage type hot water supply machine (3)
Starts operation, and thereafter, the capacity of the proportional control water heater (1) changes, and the temperature of the hot water to the radiator (4) is kept substantially constant.

以上のように放熱器(4)への温水供給により融雪運
転が行われているとき、雪が止むと降雪センサ(8)が
動作して降雪スイッチ(8S)がオフし、第1リレーコイ
ル(16)が非通電になる。そして、各第1リレースイッ
チ(231),(232)(233),(234)がオフし、循環ポ
ンプ(7)が運転を停止すると共に、比例制御給湯機
(1)、及び第1、第2貯湯式給湯機(2),(3)が
運転を停止する。
As described above, when the snow melting operation is being performed by supplying the hot water to the radiator (4), when the snow stops, the snowfall sensor (8) operates to turn off the snowfall switch (8S), and the first relay coil (16) is turned off. ) Is de-energized. Then, each of the first relay switches (231), (232), (233), and (234) is turned off, the operation of the circulation pump (7) is stopped, and the proportional control water heater (1), the first and the second The two hot-water storage type hot water heaters (2) and (3) stop operating.

又、雪が残っている場合には使用者が手動スイッチ
(35)をオンすることにより上記と同様に融雪運転が開
始される。そして例えば第3図、及び第4図に示したよ
うに各給湯機の運転が制御される。その後、残雪がなく
なり、使用者が手動スイッチ(35)をオフすると融雪運
転が停止する。尚、手動スイッチ(35)を例えば雪の圧
力を検出して自動的にオン、オフする残雪スイッチと交
換しても良い。
If snow remains, the user turns on the manual switch (35) to start the snow melting operation in the same manner as described above. Then, for example, the operation of each water heater is controlled as shown in FIG. 3 and FIG. Thereafter, the remaining snow disappears, and when the user turns off the manual switch (35), the snow melting operation stops. The manual switch (35) may be replaced with, for example, a remaining snow switch that automatically turns on and off upon detecting the pressure of snow.

上記のように融雪運転が行われているとき、比例制御
給湯機(1)、第1、第2貯湯式給湯機(2),(3)
のうちいずれか1台の給湯機が故障した場合には、残り
2台の給湯機の運転により、温水が放熱器(4)へ供給
され、融雪運転が行われる。
When the snow melting operation is performed as described above, the proportional control hot water heater (1), the first and second hot water storage type hot water heaters (2), (3)
If any one of the water heaters fails, hot water is supplied to the radiator (4) by the operation of the remaining two water heaters, and the snow melting operation is performed.

本発明は上記実施例のように構成された融雪装置であ
り、融雪運転時、放熱器(4)からの放熱量の大きな変
化に対しては第1、第2貯湯式給湯機(2),(3)の
運転、及び停止の切換えと、比例制御給湯機(1)の能
力変化とにより、放熱器(4)に供給される温水の温度
を略一定に保つことができ、この結果、各給湯機
(1),(2),(3)の無駄な運転を防止することが
できる。又、放熱器(4)からの放熱量の変化に伴う放
熱器(4)に供給される温水の温度の小さな変化に対し
ては比例制御給湯機(1)の能力変化により放熱器
(4)に供給される温水の温度を略一定に保つことがで
きるので、第1、第2貯湯式給湯機(2),(3)の運
転、停止の切換え回数の減少を図ることができ、この結
果、運転開始時に発生する点火音等の騒音を低減させ、
夜間の融雪運転時等の騒音問題を回避することができ
る。さらに、比例制御給湯機(1)、第1、第2貯湯式
給湯機(2),(3)のうちいずれか1台の給湯機が故
障した場合にも、残った給湯機の運転により温水が放熱
器(1)へ供給され、放熱器(1)の熱により融雪運転
を行うことができ、この結果、融雪装置の故障率の低減
を図ることができる。
The present invention relates to a snow melting apparatus configured as in the above embodiment. During snow melting operation, the first and second hot water storage type water heaters (2), (2), The temperature of the hot water supplied to the radiator (4) can be kept substantially constant by switching between the operation and the stop of (3) and the change in the capacity of the proportional control water heater (1). Useless operation of the water heaters (1), (2) and (3) can be prevented. In addition, a small change in the temperature of the hot water supplied to the radiator (4) due to a change in the amount of heat radiated from the radiator (4) causes a change in the capacity of the proportional control water heater (1). Since the temperature of the hot water supplied to the hot water supply can be kept substantially constant, the number of times of switching between operation and stop of the first and second hot water storage type water heaters (2) and (3) can be reduced. As a result, , Reduce noise such as ignition noise generated at the start of operation,
Noise problems during snowmelt driving at night can be avoided. Further, even when one of the proportional control water heater (1) and the first and second hot water storage type water heaters (2) and (3) fails, the remaining hot water heater operates to supply hot water. Is supplied to the radiator (1), and the snow melting operation can be performed by the heat of the radiator (1). As a result, the failure rate of the snow melting device can be reduced.

尚、本発明は上記実施例に限定されるものではなく、
例えば1台の比例制御給湯機(1)と1台の貯湯式給湯
機(2)とを組み合せた融雪装置、又は複数の比例制御
給湯機と複数の貯湯式給湯機とを組み合せた融雪装置等
においても、同様な作用効果を得ることができる。又、
上記実施例において熱源機として給湯機を利用したが、
熱源機は給湯機に限定されるものではなく、熱源機には
水加熱装置を用いれば良い。
The present invention is not limited to the above embodiment,
For example, a snow melting device combining one proportional control water heater (1) and one hot water storage type water heater (2), or a snow melting device combining a plurality of proportional control water heaters and a plurality of hot water storage type water heaters, etc. In this case, the same operation and effect can be obtained. or,
In the above embodiment, a water heater was used as a heat source device,
The heat source unit is not limited to a water heater, and a water heating device may be used as the heat source unit.

(ト)発明の効果 本発明は以上のように構成された融雪装置であり、少
なくとも1台の比例制御熱源機を含む複数台の熱源機
と、放熱器に供給される温水の温度を検出する湯温検出
器と、検出温度と設定温度との差音に応じて比例制御熱
源機の熱出力を優先的に制御し、次いで他の熱源機の発
停を制御する運転制御装置とを備えており、各熱源機の
熱出力を変化させると共に運転と停止を制御して放熱器
に供給される温水の温度を略一定に保つため、融雪装置
の無駄な運転を防止することができ、又、放熱器からの
放熱量の小さな変化に対しては比例制御熱源機の熱出力
変化により放熱器に供給される温水の温度を略一定に保
つことができるので、他の熱源機の運転と停止の切換え
回数の減少を図ることができ、この結果、融雪装置から
発生する騒音の低減を図ることができ、さらに、比例制
御熱源機と他の熱源機とのいずれか1台の熱源機が故障
した場合にも、残った熱源機の運転により融雪運転を行
うことができ、この結果、融雪装置の故障率の低減を図
ることもできる。
(G) Effects of the Invention The present invention is a snow melting apparatus configured as described above, and detects a plurality of heat source devices including at least one proportional control heat source device and a temperature of hot water supplied to a radiator. A hot water temperature detector, and an operation control device that preferentially controls the heat output of the proportional control heat source unit according to the difference sound between the detected temperature and the set temperature, and then controls the start and stop of the other heat source units. Since the temperature of the hot water supplied to the radiator is maintained substantially constant by changing the heat output of each heat source unit and controlling the operation and stop, it is possible to prevent unnecessary operation of the snow melting device, For small changes in the amount of heat released from the radiator, the temperature of the hot water supplied to the radiator can be kept substantially constant by the change in the heat output of the proportional control heat source unit. The number of switching times can be reduced, resulting in the generation of snow melting equipment. In addition, even if one of the proportional control heat source unit and the other heat source unit breaks down, it is possible to perform the snow melting operation by operating the remaining heat source unit. As a result, the failure rate of the snow melting device can be reduced.

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

第1図、乃至第4図は本発明の一実施例を示したもので
あり、第1図は融雪装置の概略構成図、第2図は融雪装
置の運転制御装置の概略回路図、第3図、及び第4図は
放熱器へ供給される温水の温度変化とそれぞれの給湯機
の運転状態を示した説明図である。 (1)……比例制御給湯機(比例制御熱源機)、
(2),(3)……第1、第2貯湯式給湯機(熱源
機)、(4)……放熱器、(11)……湯温検出器、(1
2)……融雪装置の運転制御装置。
1 to 4 show one embodiment of the present invention. FIG. 1 is a schematic configuration diagram of a snow melting device, FIG. 2 is a schematic circuit diagram of an operation control device of the snow melting device, and FIG. Drawing 4 and Drawing 4 are explanatory views showing a temperature change of hot water supplied to a radiator, and an operating state of each water heater. (1) ... proportional control water heater (proportional control heat source unit),
(2), (3): first and second hot water storage type water heaters (heat source devices), (4): radiator, (11): hot water temperature detector, (1)
2) Operation control device for snow melting equipment.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】熱源機から放熱器へ温水を循環して融雪運
転を行う融雪装置において、熱出力が変化する少なくと
も1台の比例制御熱源機を含む複数台の熱源機と、放熱
器へ供給される温水の温度を検出する湯温検出器と、こ
の湯温検出器の検出温度と設定温度との差温に応じて比
例制御熱源機の熱出力を優先的に制御し、次いで他の熱
源機の発停を制御する運転制御装置とを備えたことを特
徴とする融雪装置。
1. A snow melting apparatus for circulating warm water from a heat source unit to a radiator to perform a snow melting operation, wherein a plurality of heat source units including at least one proportional control heat source unit whose heat output changes are supplied to the radiator. A hot water temperature detector for detecting the temperature of the hot water to be heated, and a heat output of the proportional control heat source unit is preferentially controlled according to a difference between the detected temperature of the hot water temperature detector and a set temperature, and then the other heat sources A snow melting device comprising: an operation control device that controls start and stop of the machine.
JP31931387A 1987-12-16 1987-12-16 Snow melting equipment Expired - Lifetime JP2589113B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31931387A JP2589113B2 (en) 1987-12-16 1987-12-16 Snow melting equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31931387A JP2589113B2 (en) 1987-12-16 1987-12-16 Snow melting equipment

Publications (2)

Publication Number Publication Date
JPH01163374A JPH01163374A (en) 1989-06-27
JP2589113B2 true JP2589113B2 (en) 1997-03-12

Family

ID=18108802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31931387A Expired - Lifetime JP2589113B2 (en) 1987-12-16 1987-12-16 Snow melting equipment

Country Status (1)

Country Link
JP (1) JP2589113B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100795398B1 (en) * 2006-03-14 2008-01-17 정정균 Structure Roof for Prevention Collapse

Also Published As

Publication number Publication date
JPH01163374A (en) 1989-06-27

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