JPS6127718A - Abnormal pressure preventing device in hot water circuit - Google Patents
Abnormal pressure preventing device in hot water circuitInfo
- Publication number
- JPS6127718A JPS6127718A JP14909184A JP14909184A JPS6127718A JP S6127718 A JPS6127718 A JP S6127718A JP 14909184 A JP14909184 A JP 14909184A JP 14909184 A JP14909184 A JP 14909184A JP S6127718 A JPS6127718 A JP S6127718A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- valve
- water channel
- pressure
- water circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00978—Control systems or circuits characterised by failure of detection or safety means; Diagnostic methods
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、温水の加熱装置を有する温水回路の安全装置
に関し、特に温水弁の開き忘れ等による温水回路での異
常圧力上昇を防止する異常圧力防止装置に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a safety device for a hot water circuit having a hot water heating device, and in particular to a safety device for preventing an abnormal pressure rise in the hot water circuit due to failure to open the hot water valve, etc. Relating to a pressure prevention device.
第２図は、従来からバスの客室内暖房に使用されている
車両用予熱式ヒータの暖房システムの温水回路を示し、
エンジン３を冷却する冷却水を有するウォータジャケッ
ト３ａは配管１０によってラジェータ２に接続され、冷
却水はラジェータで放熱されるようになっている。Figure 2 shows the hot water circuit of the vehicle preheating heater heating system, which has traditionally been used to heat the passenger compartment of buses.
A water jacket 3a containing cooling water for cooling the engine 3 is connected to the radiator 2 through a pipe 10, and the cooling water is configured to radiate heat through the radiator.
また、ウォータジャケット３ａには、ラジェータ２を含
む第２温水路１０Ａと並列に温水の加熱装置である予熱
式ヒータ５を含む第１温水路１０Ｂが接続されている。Further, a first hot water channel 10B including a preheating type heater 5, which is a hot water heating device, is connected to the water jacket 3a in parallel with a second hot water channel 10A including the radiator 2.
この第１温水路１０Ｂには、冷却水を循環させるための
電動式ウォータポンプ４と、冷却水を所定温度に加熱し
、温水にする予熱式ヒータと、複数の放熱器８ａ〜８ｄ
とが配設されている。なおこの放熱器のうち８ａ、８ｂ
。This first hot water channel 10B includes an electric water pump 4 for circulating cooling water, a preheating type heater that heats the cooling water to a predetermined temperature to make it hot water, and a plurality of radiators 8a to 8d.
and are provided. Of these heat sinks, 8a and 8b
.
８ｃは、バスの客室内座席下に配設され、客室の暖房に
使用されている。一方放熱器８ｄは、運転席近傍に配設
され、ダクトを介してフロントガラスのデフロストを行
なうのに使用される。8c is placed under the seat in the cabin of the bus and is used to heat the cabin. On the other hand, the radiator 8d is disposed near the driver's seat and is used to defrost the windshield via a duct.
ここで温水路１０ＡとＩＯＢの間には、２個の手動式バ
ルブＩＡ・ＩＢが設けられており、予熱式ヒータを使用
しない夏期等には、バルブＩＡ・ＩＢを閉鎖し、温水路
１０Ｂ側には冷却水を導入しないようになっている。Here, two manual valves IA and IB are installed between the hot water channel 10A and IOB, and in summer when the preheating type heater is not used, the valves IA and IB are closed and the hot water channel 10B side is closed. Cooling water is not introduced into the system.
従来、冬期等に再び予熱式ヒータを使用する時、あるい
は、第１温水路１０Ｂ側の点検、修理を行った後に、バ
ルブＩＡ・ＩＢを開き忘れて、予熱式ヒータ５を作動さ
せてしまう場合がある。Conventionally, when using the preheating type heater again in winter, or after inspecting or repairing the first hot water channel 10B side, the case where the valves IA and IB are forgotten and the preheating type heater 5 is activated. There is.
そこで従来では、上記不具合を解決するために、第１温
水路１０Ｂの途中、あるいは予熱式ヒータ５に水温セン
サを取付け、この水温センサが所定温度に達すると予熱
式ヒータ５を停止させるという安全装置が知られている
。Conventionally, in order to solve the above-mentioned problem, a safety device is provided in which a water temperature sensor is installed in the middle of the first hot water channel 10B or on the preheating type heater 5, and when this water temperature sensor reaches a predetermined temperature, the preheating type heater 5 is stopped. It has been known.
しかし、上記従来の安全装置では、予熱式ヒータを停止
させた後も、予熱式ヒータの燃焼室内部の残熱によって
、温度が上昇し、熱交換器５ａ内部が異常高温、高圧と
なり、熱交換器５ａ、温水配管１０が変形し、最悪の場
合破損するという可能性があった。However, with the above-mentioned conventional safety device, even after the preheating type heater is stopped, the temperature rises due to residual heat inside the combustion chamber of the preheating type heater, and the inside of the heat exchanger 5a becomes abnormally high temperature and high pressure. There was a possibility that the container 5a and the hot water pipe 10 would be deformed and, in the worst case, be damaged.
そこで、本発明は、温水回路の途中に設けられたバルブ
を開は忘れて加熱装置を作動させた場合に、温水回路中
の異常圧力上昇を防止するためになされたものである。Therefore, the present invention has been made to prevent an abnormal pressure rise in the hot water circuit when the heating device is operated without opening the valve provided in the middle of the hot water circuit.
本発明では、上記問題点を解決するために温水回路に設
けられたバルブの弁体に逆止弁を設ける。In the present invention, in order to solve the above problems, a check valve is provided in the valve body of the valve provided in the hot water circuit.
以下、本発明を図に示す実施例によって詳細に説明する
。Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.
本発明の実施例における温水回路は、上述した〔従来の
技術〕の第２図に示すものと同様であるため、温水回路
の説明は省略する。The hot water circuit in the embodiment of the present invention is the same as that shown in FIG. 2 of the above-mentioned [Prior Art], so a description of the hot water circuit will be omitted.
第１図は、バルブＩＢの構造を示し、バルブＩＢは、配
管１０に接続端１ａ、ｌｂを螺着接続されるようになっ
ている。この場合、接続端１ａは第２温水路１０Ａ側に
接続され、接続端１ｂは第１温水路１０Ｂ側に接続され
る。バルブＩＢの青銅製のハウジングは、第１ハウジン
グＩＣ％第２ハウジング１ｄ、第３ハウジング１ｅに分
割され、第１ハウジング１ｃと第２ハウジング１ｄは間
にガスケット１１を介してポルト１４によって接続され
ている。第２ハウジング１ｄと第２ハウジングｌｅはガ
スケット１２を介してポルト１３によって接続され、第
３ハウジング１ｅにはパツキン押え１６がポルト１５に
よって取付けられている。FIG. 1 shows the structure of valve IB, and valve IB is adapted to be connected to piping 10 by screwing connection ends 1a and lb. In this case, the connecting end 1a is connected to the second hot water channel 10A side, and the connecting end 1b is connected to the first hot water channel 10B side. The bronze housing of the valve IB is divided into a first housing IC%, a second housing 1d, and a third housing 1e, and the first housing 1c and the second housing 1d are connected by a port 14 with a gasket 11 in between. There is. The second housing 1d and the second housing le are connected by a port 13 via a gasket 12, and a seal retainer 16 is attached to the third housing 1e by a port 15.
このパツキン押え１６、第３ハウジングｌｅｓ第２ハウ
ジングｌｄ、第１ハウジング１ｃの中央部を貫通し、弁
棒１７が装着される。この弁棒１７は第１図においてそ
の上端にハンドル１日がナンドによって固定され、弁棒
１７のねじ部が設けられた下端には、弁体１９が螺着し
ている。The valve rod 17 is attached to the gasket holder 16 through the central portions of the third housing les, the second housing ld, and the first housing 1c. As shown in FIG. 1, a handle is fixed to the upper end of the valve rod 17 by a NAND, and a valve body 19 is screwed to the lower end of the valve rod 17 provided with a threaded portion.
従って、バルブを開ける時は、ハンドル１８を反時計方
向に回転すると、弁棒１７が反時計方向に回転し、弁体
１９、弁棒に設けられたねじ部に沿って第１、第２、第
３ハウジング（ＩＣ，ｌｄ。Therefore, when opening the valve, when the handle 18 is rotated counterclockwise, the valve stem 17 is rotated counterclockwise, and the first, second, Third housing (IC, ld.
ｌｅ）内を上方に移動し、第１ハウジング２ｏ内の管路
を開く。le) to open the conduit in the first housing 2o.
一方、バルブＩＢを閉める時はハンドル１８を時計方向
に回転すると、上記と逆に弁体１９は下方に移動して管
路２ｏ閉鎖する。On the other hand, when closing the valve IB, when the handle 18 is rotated clockwise, the valve body 19 moves downward, contrary to the above, and closes the conduit 2o.
上記弁体１９の中央には、連通項２０ａが穿孔されてお
り、この連通項２０ａの接続端ｌｄ側には、逆止弁３０
が設けられている。A communication section 20a is bored in the center of the valve body 19, and a check valve 30 is provided on the connection end ld side of the communication section 20a.
is provided.
第３図は、その部分の拡大図であり、ゴム製の円板３１
は、連通孔２０ａの一端を防ぐように、ステンレス製円
形プレート３２を介し、ビス３３によって、弁体１９に
取付けられている。FIG. 3 is an enlarged view of that part, and shows the rubber disc 31.
is attached to the valve body 19 with screws 33 via a stainless steel circular plate 32 so as to prevent one end of the communication hole 20a.
なお、バルブＩＡは、上記連通項２０ａおよび逆止弁３
０を有さない以外は、バルブＩＢと同様の構成である。Note that the valve IA is connected to the communication section 20a and the check valve 3.
It has the same configuration as valve IB except that it does not have 0.
以上の構成において、本実施例の作動を説明する。まず
放熱器使用時、つまり暖房時には、バルブＬＡ、ＩＢを
手動にて開弁し、エンジン３の冷却水を電動ウォータポ
ンプ４により、予熱式ヒータ５の熱交換器を通し放熱機
８’ａ〜８ｄへ送り、冷却水熱を車室内に放熱し車室内
暖房する。この場合予熱式ヒータ５は、外気温度が非常
に冷えているとき、あるいはエンジン３がアイドリング
状態でエンジンからの熱源が少ない時などの冷却水温が
低下する場合、作動開始して水温を上昇させる。In the above configuration, the operation of this embodiment will be explained. First, when using the radiator, that is, during heating, manually open the valves LA and IB, and use the electric water pump 4 to pump cooling water from the engine 3 through the heat exchanger of the preheating heater 5 to the radiator 8'a~ 8d, and radiates the heat of the cooling water into the vehicle interior to heat the vehicle interior. In this case, the preheating type heater 5 starts operating and raises the water temperature when the cooling water temperature decreases, such as when the outside air temperature is very cold or when the engine 3 is in an idling state and there is little heat source from the engine.
一方、シーズンＯＦＦ、又はヒータ冷却水回路の故障時
には、冷却水系をエンジン３側第２温水路１０Ａとヒー
タ側第１温水路１０Ｂに、バルブＩＡ・ＩＢを閉じるこ
とによって分離する。この場合、バルブＩＢの逆止弁３
０は、第３図に示すように、第２温水路１０Ａ側から矢
印Ｆ方向の力を受けるため円板３１は連通孔２０ａを閉
じている。従って、シーズンＯＦＦ時には、冷却水が放
熱器８に流れないため、放熱器８からの温風が出ること
がない、又ヒータ側の故障で放熱器８等を取り外しても
エンジン冷却水が出ることなく、車両は運転可能である
。On the other hand, when the season is off or the heater cooling water circuit fails, the cooling water system is separated into the second hot water channel 10A on the engine 3 side and the first hot water channel 10B on the heater side by closing the valves IA and IB. In this case, check valve 3 of valve IB
0, as shown in FIG. 3, the disk 31 closes the communication hole 20a because it receives a force in the direction of arrow F from the second hot water channel 10A side. Therefore, during the off-season, coolant does not flow to the radiator 8, so warm air does not come out from the radiator 8, and even if the radiator 8, etc. is removed due to a failure on the heater side, engine coolant may still come out. The vehicle is drivable.
次に再び、バルブＩＡ・ＩＢを閉じたまま誤って予熱式
ヒータ５を運転した場合、予熱式ヒータ５の燃焼熱によ
り、温水路１０Ｂ内の圧力が上昇する。しかし、圧力が
上昇すると、例えば０．５ ｋｇ／−以上になると、バ
ルブＩＢに設けられた逆止弁３０の円板３１が圧力によ
り第３図点線に示すように開弁し、圧力はエンジン３側
の第２温水路１０Ａに伝わり、ラジェータキャップ５の
開弁圧以上に上昇すると、圧力は外部に放出され、冷却
水系の圧力は、開弁圧以上に上昇しない、従って暖房機
器、配管部品等を、異常高圧によって破損することはな
い。Next, if the preheating type heater 5 is operated by mistake again with the valves IA and IB closed, the pressure in the hot water channel 10B increases due to the combustion heat of the preheating type heater 5. However, when the pressure rises, for example 0.5 kg/- or more, the disc 31 of the check valve 30 provided in valve IB opens as shown by the dotted line in Figure 3 due to the pressure, and the pressure When the pressure rises above the valve opening pressure of the radiator cap 5, the pressure in the cooling water system does not rise above the valve opening pressure, so heating equipment and piping parts etc., will not be damaged by abnormally high pressure.
次に本発明の他の実施例について説明する。第４図は、
本発明の逆止弁機構をねじ込みアングル弁に適用した例
を示し、その弁体４０には、連通孔４０ａ、４０ｂを設
け、連通孔４０ｂに第３図に示す逆止弁３０を設けたも
のである。Next, other embodiments of the present invention will be described. Figure 4 shows
An example in which the check valve mechanism of the present invention is applied to a screw-in angle valve is shown, in which a valve body 40 is provided with communication holes 40a and 40b, and a check valve 30 shown in FIG. 3 is provided in the communication hole 40b. It is.
第５図は、本発明をポール弁に適用した例を示し、球状
の弁体５０は、矢印Ｓ方向に回動される。FIG. 5 shows an example in which the present invention is applied to a pole valve, in which a spherical valve body 50 is rotated in the direction of arrow S.
第５図は閉じた状態を示す。弁体５０には連通孔５０ａ
、５０ｂが設けられており、連通孔５０ｂには第３図に
示す逆止弁３０が設けられている。FIG. 5 shows the closed state. The valve body 50 has a communication hole 50a.
, 50b are provided, and a check valve 30 shown in FIG. 3 is provided in the communication hole 50b.
なお、第３図に示す逆止弁の構造において円板３１はゴ
ム製に限らず、例えば弾性の金属製あるいは、樹脂製で
もよいことは言うまでもない。It goes without saying that in the structure of the check valve shown in FIG. 3, the disc 31 is not limited to being made of rubber, but may be made of elastic metal or resin, for example.
また、逆止弁の製造は第３図に示すものに限定されず、
弁体にはめ込むようにしてもよく、コイルスプリングと
の組合せにより構成してもよい。Furthermore, the manufacture of check valves is not limited to that shown in Fig. 3;
It may be fitted into the valve body, or may be configured in combination with a coil spring.
また、上記の実施例では、バルブＩＡ・ＩＢのうちＩＢ
のみに逆止弁３０を設けるようにしているが、バルブＩ
ＡもしくはバルブＩＡ・ＩＢ共に設けてもよいことは言
うまでもない。Further, in the above embodiment, of the valves IA and IB, IB
The check valve 30 is provided only in the valve I.
It goes without saying that A or both valves IA and IB may be provided.
以上述べたように、本発明によれば、バルブの弁体に逆
止弁を設けているため、バルブを開き忘れて、加熱装置
を作動させても、第１温水路内の圧力が所定圧以上にな
れば、弁体に設けられた逆止弁が開く。従って第１温水
路内部の温水は、第２温水路側へ流入し、圧力調整弁に
よって外部へ放出されるため、第１温水路内部の圧力は
、異常に高くなることが防止され、温水配管および加熱
装置の圧力変形・破損が確実に防止できる。As described above, according to the present invention, since the check valve is provided in the valve body of the valve, even if the heating device is activated by forgetting to open the valve, the pressure in the first hot water channel remains at the predetermined pressure. When this happens, the check valve provided on the valve body opens. Therefore, the hot water inside the first hot water channel flows into the second hot water channel and is discharged to the outside by the pressure regulating valve, so the pressure inside the first hot water channel is prevented from becoming abnormally high, and the hot water pipe and Pressure deformation and damage to the heating device can be reliably prevented.
第１図は、バルブの弁体に逆止弁を有する本発明のバル
ブ断面図、第２図は、従来および本発明の温水回路を示
す概略図、第３図は、第１図の部分拡大図、第４図及び
第５図は、本発明の他の実施例を示すバルブの断面図で
ある。
１ Ｂ ・−ｔ＜ ＪＬ／プ、１９，４０．５０・・・
弁体、３゜逆止弁、５・・・予熱式ヒータ（加熱装置）
、２ａ・・・ラジェータキャンプ（圧力調整弁）、ＩＯ
Ａ・・・第２温水路、１０ Ｂ ・・・第１温水路、２
０ａ、４０ａ。
４０ｂ、５０ａ、５０ｂ・・・連通孔。FIG. 1 is a cross-sectional view of a valve of the present invention having a check valve in the valve body, FIG. 2 is a schematic diagram showing a conventional hot water circuit and a hot water circuit of the present invention, and FIG. 3 is a partial enlargement of FIG. 1. 4 and 5 are cross-sectional views of valves showing other embodiments of the present invention. 1 B ・-t< JL/pu, 19,40.50...
Valve body, 3° check valve, 5... preheating heater (heating device)
, 2a...Radiator camp (pressure regulating valve), IO
A...Second warm water channel, 10 B...First warm water channel, 2
0a, 40a. 40b, 50a, 50b... communicating holes.
Claims (1)
る圧力調整弁を有する第２温水路と、該第２温水路と前
記第１温水路とを連結する配管の途中に設けられたバル
ブと、 前記バルブの弁体を貫通して設けられ、前記第１温水路
と前記第２温水路とを連通する連通路と、該連通路に設
けられ、前記第１温水路内の圧力が所定圧力以上に達す
ると開く逆止弁とを具備することを特徴とする温水回路
の異常圧力防止装置。[Scope of Claims] A first hot water channel having a hot water heating device; a second hot water channel having a pressure regulating valve that releases the hot water to the outside when the pressure of the hot water reaches a predetermined pressure or higher; and the second hot water channel. a valve provided in the middle of a pipe connecting the first hot water channel and the first hot water channel; and a communication path provided through the valve body of the valve and communicating the first hot water channel and the second hot water channel. An abnormal pressure prevention device for a hot water circuit, comprising: a check valve that is provided in the communication path and opens when the pressure in the first hot water channel reaches a predetermined pressure or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59149091A JPH089290B2 (en) | 1984-07-17 | 1984-07-17 | Hot water circuit device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59149091A JPH089290B2 (en) | 1984-07-17 | 1984-07-17 | Hot water circuit device for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6127718A true JPS6127718A (en) | 1986-02-07 |
| JPH089290B2 JPH089290B2 (en) | 1996-01-31 |
Family
ID=15467498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59149091A Expired - Lifetime JPH089290B2 (en) | 1984-07-17 | 1984-07-17 | Hot water circuit device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089290B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201668A (en) * | 1990-08-07 | 1993-04-13 | Yazaki Corporation | Electrical connector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5441481U (en) * | 1977-08-26 | 1979-03-19 | ||
| JPS5949837U (en) * | 1982-09-24 | 1984-04-02 | 三洋電機株式会社 | hot water boiler |
-
1984
- 1984-07-17 JP JP59149091A patent/JPH089290B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5441481U (en) * | 1977-08-26 | 1979-03-19 | ||
| JPS5949837U (en) * | 1982-09-24 | 1984-04-02 | 三洋電機株式会社 | hot water boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201668A (en) * | 1990-08-07 | 1993-04-13 | Yazaki Corporation | Electrical connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089290B2 (en) | 1996-01-31 |
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