JPH03124155U - - Google Patents
Info
- Publication number
- JPH03124155U JPH03124155U JP3591690U JP3591690U JPH03124155U JP H03124155 U JPH03124155 U JP H03124155U JP 3591690 U JP3591690 U JP 3591690U JP 3591690 U JP3591690 U JP 3591690U JP H03124155 U JPH03124155 U JP H03124155U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- working chamber
- pipe
- check valve
- overflow pipe
- 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
- 230000002265 prevention Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003303 reheating Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Control For Baths (AREA)
Description
第１図は本考案に係る自動風呂釜の逆流防止装
置の一実施例を示す断面構成図、第２図は同実施
例装置を組み込んだ自動風呂釜のシステム図、第
３図は同実施例装置の逆流防止作用を示す断面図
、第４図はかつての自動風呂釜の逆流防止装置の
説明図、第５図は現在使用されている一般的な自
動風呂釜の逆流防止装置の説明図である。
１……浴槽、２……ポンプ、３……追い焚き熱
交換器、４……循環追い焚き管路、５……冷水管
、６……給湯熱交換器、７……給湯管路、８……
分岐管、９……逆流防止装置、１０……電磁弁、
１１……ホツパー、１２……第２の逆止弁、１３
……第１の逆止弁、１４……バキユームブレーカ
、１５……ハウジング、１６……第１の作動室、
１７……第２の作動室、１８……逆止弁１３の入
口側の通路、２０……逆止弁１２の出口側の通路
、２１……弁体、２２……デイスク、２３……ダ
イアフラム、２４……オーバーフロー管、２５…
…上端開口、２６……連通通路、２７……排水管
、２８……負圧作動弁、２９……スプリング。
Fig. 1 is a cross-sectional configuration diagram showing an embodiment of the backflow prevention device for an automatic bath pot according to the present invention, Fig. 2 is a system diagram of an automatic bath pot incorporating the same embodiment device, and Fig. 3 is the same embodiment. A cross-sectional view showing the backflow prevention effect of the device, Figure 4 is an explanatory diagram of a former automatic bathtub backflow prevention device, and Figure 5 is an explanatory diagram of a typical automatic bathtub backflow prevention device currently in use. be. 1... Bathtub, 2... Pump, 3... Reheating heat exchanger, 4... Circulation reheating pipe, 5... Cold water pipe, 6... Hot water supply heat exchanger, 7... Hot water supply pipe, 8 ……
Branch pipe, 9... Backflow prevention device, 10... Solenoid valve,
11...Hopper, 12...Second check valve, 13
... first check valve, 14 ... vacuum breaker, 15 ... housing, 16 ... first working chamber,
17... Second working chamber, 18... Passage on the inlet side of the check valve 13, 20... Passage on the outlet side of the check valve 12, 21... Valve body, 22... Disk, 23... Diaphragm , 24...overflow pipe, 25...
...Top opening, 26...Communication passage, 27...Drain pipe, 28...Negative pressure operating valve, 29...Spring.
Claims (1)
との間に介設される第１の逆止弁と開閉弁と第２
の逆止弁とを備えた弁直列接続体と、開閉弁の上
流側管路に配置されるバキユームブレーカと、開
閉弁に対して並列に接続される負圧作動弁とを有
し、該負圧作動弁は、前記開閉弁の上流側の管路
に連通する第１の作動室と、前記開閉弁の下流側
の管路に連通する第２の作動室と、この第２の作
動室の下部側から同作動室内に上方に向けて突出
するオーバーフロー管と、第１の作動室と第２の
作動室とを隔絶し循環追い焚き管路側から湯水が
逆流したときに前記オーバーフロー管の上端開口
を開放する弁体とを有して構成されている自動風
呂釜の逆流防止装置。 A first check valve, an on-off valve, and a second check valve are interposed between the hot water supply pipe of the water heater and the circulation reheating pipe of the bath pot.
A valve series connection body including a check valve, a vacuum breaker disposed in the upstream pipe line of the on-off valve, and a negative pressure operated valve connected in parallel to the on-off valve. The negative pressure operated valve includes a first working chamber communicating with a conduit on the upstream side of the on-off valve, a second working chamber communicating with a conduit on the downstream side of the on-off valve, and the second working chamber. An overflow pipe that projects upward into the working chamber from the lower side of the overflow pipe isolates the first working chamber and the second working chamber, and when hot water flows back from the circulation reheating pipe side, the upper end of the overflow pipe A backflow prevention device for an automatic bathtub, comprising a valve body that opens an opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990035916U JP2520484Y2 (en) | 1990-02-28 | 1990-04-03 | Backflow prevention device for automatic bath |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2-20153 | 1990-02-28 | ||
| JP2015390 | 1990-02-28 | ||
| JP1990035916U JP2520484Y2 (en) | 1990-02-28 | 1990-04-03 | Backflow prevention device for automatic bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03124155U true JPH03124155U (en) | 1991-12-17 |
| JP2520484Y2 JP2520484Y2 (en) | 1996-12-18 |
Family
ID=31889877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990035916U Expired - Lifetime JP2520484Y2 (en) | 1990-02-28 | 1990-04-03 | Backflow prevention device for automatic bath |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520484Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254604A (en) * | 2002-02-28 | 2003-09-10 | Tgk Co Ltd | Counterflow prevention device |
| JP2015017719A (en) * | 2013-07-09 | 2015-01-29 | 日立アプライアンス株式会社 | Backflow prevention device and water heater |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004084400A1 (en) | 2003-03-17 | 2004-09-30 | Matsushita Electric Industrial Co., Ltd. | Method of driving brushless dc motor and device therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119063A (en) * | 1984-11-15 | 1986-06-06 | Nec Corp | Manufacture of semiconductor device |
| JPH01196429A (en) * | 1988-01-29 | 1989-08-08 | Noritz Corp | Bath automatic water supply device |
-
1990
- 1990-04-03 JP JP1990035916U patent/JP2520484Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119063A (en) * | 1984-11-15 | 1986-06-06 | Nec Corp | Manufacture of semiconductor device |
| JPH01196429A (en) * | 1988-01-29 | 1989-08-08 | Noritz Corp | Bath automatic water supply device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254604A (en) * | 2002-02-28 | 2003-09-10 | Tgk Co Ltd | Counterflow prevention device |
| JP2015017719A (en) * | 2013-07-09 | 2015-01-29 | 日立アプライアンス株式会社 | Backflow prevention device and water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2520484Y2 (en) | 1996-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |