JPS621843B2 - - Google Patents
Info
- Publication number
- JPS621843B2 JPS621843B2 JP22857682A JP22857682A JPS621843B2 JP S621843 B2 JPS621843 B2 JP S621843B2 JP 22857682 A JP22857682 A JP 22857682A JP 22857682 A JP22857682 A JP 22857682A JP S621843 B2 JPS621843 B2 JP S621843B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- temperature
- thermoswitch
- heating
- water boiler
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 64
- 238000010438 heat treatment Methods 0.000 claims description 36
- 239000000498 cooling water Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/54—Water heaters for bathtubs or pools; Water heaters for reheating the water in bathtubs or pools
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
【発明の詳細な説明】
本発明はバスの温水暖房装置の制御装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a hot water heating system for a bus.
バスの暖房装置として、走行用エンジンの冷却
水を温水ボイラで加熱した後放熱器に導入して室
内の暖房を行うようにした所謂温水暖房システム
が開発されている。 As a heating device for a bus, a so-called hot water heating system has been developed in which cooling water for a running engine is heated in a hot water boiler and then introduced into a radiator to heat the interior of the bus.
上記のような温水暖房システムは一般に第１図
に示すように、水ポンプ１′、サーモスタツト
４、ラジエータ３よりなるエンジン冷却水循環回
路を持つ走行用エンジンにおいて、サーモスタツ
ト４の上流側からエンジン１を冷却した後の冷却
水を水弁１３、水ポンプ５を介して温水ボイラ６
に導き、該温水ボイラ６から放熱器９、デフロス
タ１１を通る間に暖房用フアン１０により車室内
空気を暖めると共にデフロスタ用フアン１２にて
温風を窓ガラス内面に吹きつけてデフロストを行
い、再びエンジン１に戻るようになつている。 As shown in FIG. 1, the hot water heating system described above is generally used in a driving engine that has an engine cooling water circulation circuit consisting of a water pump 1', a thermostat 4, and a radiator 3. After cooling, the cooling water is sent to a hot water boiler 6 via a water valve 13 and a water pump 5.
While passing from the hot water boiler 6 to the radiator 9 and the defroster 11, the heating fan 10 warms the air inside the vehicle, and the defroster fan 12 blows warm air onto the inner surface of the window glass to defrost the air. It is set to return to engine 1.
上記においてサーモスタツト４は一般に約72℃
程度で開きはじめほぼ78℃で全開となり、エンジ
ン１の冷却水をラジエータ３に流通させラジエー
タフアン２にて冷却した後エンジン１に戻るよう
になつており、これによりエンジン１の冷却水出
口附近の水温は常時約75℃程度に保たれるように
なつているのが普通である。 In the above, thermostat 4 is generally about 72℃
It starts to open at about 78 degrees Celsius and fully opens at about 78℃, and the cooling water of the engine 1 flows through the radiator 3, is cooled by the radiator fan 2, and then returns to the engine 1. Normally, the water temperature is kept at around 75°C at all times.
従つてエンジン１の出口からポンプ５により暖
房回路に供給される水温は配管途中の自然放熱等
の損失を考慮に入れるとほぼ70℃前後程度であ
る。 Therefore, the temperature of the water supplied from the outlet of the engine 1 to the heating circuit by the pump 5 is approximately 70° C., taking into account losses such as natural heat radiation along the piping.
温水ボイラ６には温水の温度を検出して作動す
るサーモスイツチ７が設けられ、温水ボイラ６内
の温水温度が60℃まで下るとサーモスイツチ７が
オンとなつて温水ボイラ６が内部の温水を加熱
し、ボイラ内温水が70℃になるとサーモスイツチ
７がオフとなつて加熱を停止するようになつてお
り、これにより例えば停車中でエンジン１がアイ
ドル運転しているとき、一時停止の頻度の多い走
行状態、下り坂走行時或は暖機運転中等のエンジ
ン出力が小なるとき及び異常に外気温が低くエン
ジン冷却水温が高くならないとき等においても暖
房温度を低下させることがないようになつてい
る。 The hot water boiler 6 is equipped with a thermo switch 7 that detects the temperature of the hot water and operates. When the temperature of the hot water in the hot water boiler 6 drops to 60°C, the thermo switch 7 is turned on and the hot water boiler 6 starts discharging the internal hot water. When the heated water in the boiler reaches 70°C, the thermo switch 7 turns off and stops heating. This reduces the frequency of temporary stops, for example when the engine 1 is idling while the vehicle is stationary. The heating temperature will not be lowered even when the engine output is low, such as during heavy driving, when driving downhill or during warm-up, or when the outside temperature is abnormally low and the engine cooling water temperature does not rise. There is.
ところが上記のような従来の温水暖房システム
においては、エンジン１の出口水温はサーモスタ
ツト４の設定温度以上になるとラジエータ３にて
冷却して決してサーモスタツト４の設定値の上限
例えば78℃を越えることがないようになつてお
り、且つ温水ボイラ６内に内装されているサーモ
スイツチ７の設定温度の最高値は当然上記サーモ
スタツト４の設定温度以下に設定されなければな
らない（もしサーモスイツチの設定温度をサーモ
スタツト４より高くすると常時温水ボイラは燃焼
加熱状態となり燃料の消費が増加し実用化され得
ない）ので、従つて放熱器９に供給される温水温
度は決してサーモスタツト４の設定最高値即ち78
℃以上にはなり得ず、外気温が異常に低温の場合
は暖房温度が不足ぎみになる。 However, in the conventional hot water heating system as described above, when the outlet water temperature of the engine 1 exceeds the set temperature of the thermostat 4, it is cooled by the radiator 3 and never exceeds the upper limit of the set value of the thermostat 4, for example, 78°C. In addition, the maximum setting temperature of the thermoswitch 7 installed in the hot water boiler 6 must naturally be set below the setting temperature of the thermostat 4 (if the setting temperature of the thermoswitch is (If the temperature is higher than the thermostat 4, the hot water boiler will be constantly in a state of combustion heating, increasing fuel consumption and cannot be put into practical use.) Therefore, the temperature of the hot water supplied to the radiator 9 will never exceed the maximum setting of the thermostat 4, that is, 78
It cannot go above ℃, and if the outside temperature is abnormally low, the heating temperature will be insufficient.
又一般にバスは全長が11〜12ｍと長く、最後部
にエンジンを搭載し且つデフロスタ１１は運転席
近辺に設けなければならないので、暖房用の温水
配管はその全長が25〜30ｍにも達し、又椅子やフ
エンダー等をよけつつ屈曲配設されることになる
ので、温水の流通抵抗は温水流量30／分程度で
25〜30ｍ水柱に達する。 In addition, buses are generally long, with a total length of 11 to 12 meters, and the engine is mounted at the rear, and the defroster 11 must be installed near the driver's seat, so the total length of hot water piping for heating can reach 25 to 30 meters. Since the hot water is installed bent while avoiding chairs, fenders, etc., the hot water flow resistance is approximately 30/min.
Reaches 25-30m water column.
エンジン１の水ポンプ１′は25〜30ｍの水柱の
高圧で送水できるようになつているがポンプ５は
通常電動式で５ｍ水柱程度の圧送能力であり、通
常時はポンプ５に水ポンプ１′の圧力が加わゝつ
て暖房系へ送水されるので問題ないが、寒冷時に
おける高速走行時や長い登り坂等のエンジン負荷
が大なるとき、冷却水温が上昇しサーモスタツト
４は全開となり水ポンプ１′の圧送力はラジエー
タ３側に分散されてしまい、この為暖房系への送
水量が減少して充分な熱量を供給できず、エンジ
ン冷却水温は上昇するが暖房能力が減少すると言
う不具合が生じ、このとき水温は高いので温水ボ
イラ６のサーモスタツト７はオフのままであり、
結局暖房不足となつてしまう。 The water pump 1' of the engine 1 is designed to send water at a high pressure of 25 to 30 m of water column, but the pump 5 is usually electric and has a pumping capacity of about 5 m of water column. There is no problem because the water is sent to the heating system under pressure, but when the engine load is large, such as when driving at high speed in cold weather or climbing a long hill, the cooling water temperature rises and the thermostat 4 opens fully, causing the water pump 1 to close. 'The pumping force is dispersed to the radiator 3 side, and as a result, the amount of water sent to the heating system decreases, making it impossible to supply sufficient heat, resulting in a problem in which the engine cooling water temperature rises but the heating capacity decreases. At this time, the water temperature is high, so the thermostat 7 of the hot water boiler 6 remains off.
In the end, you end up with insufficient heating.
本発明は上記のような従来の問題を解消するこ
とを目的とするものであり、以下本発明を第２，
３図の実施例を参照して説明する。 The present invention aims to solve the above-mentioned conventional problems.
This will be explained with reference to the embodiment shown in FIG.
本発明では第１図の一般的な温水暖房システム
の温水ボイラ６から放熱器９に至る温水の温度を
検出し前記サーモスタツト４の設定最高値より高
い温度でオフとなりそれ以上では常時オンとなつ
ている高温サーモスイツチ８を附加する。 In the present invention, the temperature of hot water from the hot water boiler 6 to the radiator 9 of the general hot water heating system shown in FIG. A high temperature thermoswitch 8 is added.
そして第２図に示すように電源Ｅから暖房用メ
インスイツチS1，サーモスイツチ７を通り温水ボ
イラ６の加熱装置Ｗよりアースに至る温水ボイラ
制御回路に、上記高温サーモスイツチ８をサーモ
スイツチ７と並列に接続すると共に、上記サーモ
スイツチ７の回路と高温サーモスイツチ８の回路
とを切換制御する切換スイツチS2を設け、通常時
は切換スイツチS2をサーモスイツチ７の回路がオ
ン、高温サーモスイツチ８の回路がオフとなるよ
うにセツトしておき、従来通り温水ボイラ６は低
温側のサーモスイツチ７により制御されるが、例
えば前記のように極寒冷時におけるエンジン負荷
大なる走行状態で暖房温度が不足したとき切換ス
イツチS2を高温サーモスイツチ８側に切換え温水
ボイラで温水を高温に加熱して放熱器９を流れる
温水温度を上昇させ、強暖房状態とすることがで
きるようにしたものである。 As shown in FIG. 2, the high temperature thermoswitch 8 is connected to the thermoswitch 7 in the hot water boiler control circuit from the power source E through the heating main switch S 1 and the thermoswitch 7 to the heating device W of the hot water boiler 6 and then to the ground. A changeover switch S2 is provided which is connected in parallel and controls the switching between the circuit of the thermoswitch 7 and the circuit of the high temperature thermoswitch 8. Under normal conditions, the changeover switch S2 is set so that the circuit of the thermoswitch 7 is on and the circuit of the high temperature thermoswitch is on. The hot water boiler 6 is controlled by the low-temperature side thermoswitch 7 as before, but the heating temperature is set so that the circuit No. When the temperature is insufficient, the changeover switch S2 is switched to the high temperature thermoswitch 8 side, the hot water is heated to a high temperature by the hot water boiler, and the temperature of the hot water flowing through the radiator 9 is increased, making it possible to create a strong heating state. be.
上記高温サーモスイツチ８は例えば水温が98〜
100℃でオフ、それ以下でオンとなるように設定
することが望ましい。この設定温度は水の沸点に
近い温度であるが、暖房システム中の温水は水ポ
ンプ１′及びポンプ５の吐出圧により常時最低10
ｍ水柱（１Kg／cm2）程度に加圧されておりその圧
力により沸点は高くなつているので実用上問題が
生じることは全くない。 For example, the high temperature thermoswitch 8 has a water temperature of 98 to
It is desirable to set it so that it turns off at 100°C and turns on at lower temperatures. This set temperature is close to the boiling point of water, but the hot water in the heating system is always at least 10
Since it is pressurized to about m water column (1 Kg/cm 2 ) and the boiling point is raised by that pressure, there is no problem in practical use.
尚第２図においてT1は室温設定サーモスイツ
チであり、該サーモスイツチT1のオン、オフに
よつてリレーR1が作動し、室温が設定値以上に
なるとRS1がオフとなつてサーモスイツチ７の回
路を遮断すると共にRS2が作動して高温サーモス
イツチ８の回路を切り低温のサーモスイツチ７側
に切換えるよう構成され、これにより室内温度を
ほぼ一定に保つようになつている。 In Fig. 2, T1 is a thermoswitch for setting the room temperature. Relay R1 is activated by turning on and off the thermoswitch T1 , and when the room temperature exceeds the set value, RS1 is turned off and the thermoswitch is activated. At the same time as the circuit of 7 is cut off, RS 2 is activated to cut off the circuit of high temperature thermoswitch 8 and switch to the low temperature thermoswitch 7 side, thereby keeping the indoor temperature almost constant.
第３図は本発明の第２の実施例を示すもので、
第２図の実施例の手動の切換スイツチS2の代り
に、外気温度センサT2とそれによつて作動する
リレーR2とを用い、通常の暖房時はリレースイ
ツチRSがサーモスイツチ７の回路側をオン、高
温サーモスイツチ８の回路側をオフとし、従来通
りの暖房制御を行うが、外気温が設定値以下とな
ると外気温度センサT2がオンとなつてリレーR2
が作動し、リレースイツチRSが高温サーモスイ
ツチ８の回路をオンとするよう切換わり、強暖房
となるようになつており、その他の構成は第２図
と同じで第２図と同一の符号は同一の部分を表わ
す。 FIG. 3 shows a second embodiment of the present invention,
In place of the manual changeover switch S 2 in the embodiment shown in FIG. 2, an outside air temperature sensor T 2 and a relay R 2 operated by it are used. During normal heating, the relay switch RS is placed on the circuit side of the thermoswitch 7. is turned on, the circuit side of high temperature thermo switch 8 is turned off, and heating control is performed as before. However, when the outside temperature falls below the set value, outside air temperature sensor T 2 is turned on and relay R 2 is turned on.
is activated, relay switch RS is switched to turn on the circuit of high temperature thermo switch 8, and strong heating is achieved.Other configurations are the same as in Fig. 2, and the same symbols as in Fig. 2 are used. Represents the same part.
この例では暖房効果の強弱の切換えが自動的に
行われ、運転者の負担軽減をはかり得る。 In this example, the strength of the heating effect is automatically switched, which can reduce the burden on the driver.
以上のように本発明によれば温水ボイラを用い
たバス用暖房装置において、極めて簡単なる構成
によつて従来の暖房不足と言う不具合を的確に防
止し得るもので、実用上多大の効果をもたらし得
るものである。 As described above, in a bus heating system using a hot water boiler, the present invention can accurately prevent the conventional problem of insufficient heating with an extremely simple configuration, and has a great practical effect. It's something you get.
第１図は本発明を適用した温水暖房システムの
系統説明図、第２図及び第３図は本発明の実施例
をそれぞれ示す制御回路図である。
１……エンジン、１′……水ポンプ、２……ラ
ジエータフアン、３……ラジエータ、４……サー
モスタツト、５……ポンプ、６……温水ボイラ、
７……サーモスイツチ、８……高温サーモスイツ
チ、９……放熱器、１０……暖房用フアン、１１
……デフロスタ、１２……デフロスタ用フアン、
Ｅ……電源、S1……メインスイツチ、S2……切換
スイツチ、Ｗ……温水ボイラの加熱装置、R1，
R2……リレー、T1……室温設定サーモスイツ
チ、T2……外気温度センサ。
FIG. 1 is a system explanatory diagram of a hot water heating system to which the present invention is applied, and FIGS. 2 and 3 are control circuit diagrams showing embodiments of the present invention. 1...Engine, 1'...Water pump, 2...Radiator fan, 3...Radiator, 4...Thermostat, 5...Pump, 6...Hot water boiler,
7... Thermoswitch, 8... High temperature thermoswitch, 9... Heat radiator, 10... Heating fan, 11
...Defroster, 12...Defroster fan,
E...power supply, S1 ...main switch, S2 ...changeover switch, W...hot water boiler heating device, R1 ,
R 2 ... Relay, T 1 ... Room temperature setting thermoswitch, T 2 ... Outside temperature sensor.
Claims (1)
ンプにより温水ボイラに送りこゝで加熱した後放
熱器に導いて室内を暖房するようにした温水暖房
装置において、電源より温水ボイラ内蔵のサーモ
スイツチを通り温水ボイラ加熱装置に至る温水ボ
イラ加熱制御回路に、温水ボイラより放熱器に至
る間の温水の温度を検出し前記サーモスイツチの
設定温度より高い温度でオフとなりそれ以下では
オンとなる高温サーモスイツチを、上記サーモス
イツチと並列に接続し、該サーモスイツチと高温
サーモスイツチとを切換える切換スイツチを設け
たことを特徴とするバス用温水暖房装置の制御装
置。 ２ 切換スイツチは、外気温度センサの信号によ
つて外気温が設定値以上の場合はサーモスイツチ
側がオンとなり、所定値以下のとき高温サーモス
イツチ側がオンとなるよう自動的に切換えられる
ようになつていることを特徴とする特許請求の範
囲第１項に記載のバス用温水暖房装置の制御装
置。[Scope of Claims] 1. A hot water heating system in which cooling water after cooling a running engine of a bus is sent to a hot water boiler by a water pump, heated, and then guided to a radiator to heat the room. The hot water boiler heating control circuit that passes through the hot water boiler's built-in thermoswitch to the hot water boiler heating device detects the temperature of the hot water between the hot water boiler and the radiator, and turns off when the temperature is higher than the set temperature of the thermoswitch and lower than that. A control device for a hot water heating system for a bus, characterized in that a high-temperature thermoswitch that is turned on is connected in parallel with the thermoswitch, and a changeover switch is provided for switching between the thermoswitch and the high-temperature thermoswitch. 2 The changeover switch is designed to automatically switch to the thermoswitch side when the outside temperature is above a set value according to the signal from the outside air temperature sensor, and turn on the high temperature thermoswitch side when it is below a predetermined value. A control device for a hot water heating device for a bus according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57228576A JPS59120510A (en) | 1982-12-28 | 1982-12-28 | Control device of bath hot-water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57228576A JPS59120510A (en) | 1982-12-28 | 1982-12-28 | Control device of bath hot-water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59120510A JPS59120510A (en) | 1984-07-12 |
| JPS621843B2 true JPS621843B2 (en) | 1987-01-16 |
Family
ID=16878524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57228576A Granted JPS59120510A (en) | 1982-12-28 | 1982-12-28 | Control device of bath hot-water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59120510A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61111817U (en) * | 1984-12-27 | 1986-07-15 | ||
| JP7409273B2 (en) * | 2020-09-29 | 2024-01-09 | トヨタ自動車株式会社 | Control device and control method |
-
1982
- 1982-12-28 JP JP57228576A patent/JPS59120510A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59120510A (en) | 1984-07-12 |
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