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
Application number
JP3591690U
Other languages
Japanese (ja)
Other versions
JP2520484Y2 (en
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 filed Critical
Priority to JP1990035916U priority Critical patent/JP2520484Y2/en
Publication of JPH03124155U publication Critical patent/JPH03124155U/ja
Application granted granted Critical
Publication of JP2520484Y2 publication Critical patent/JP2520484Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Control For Baths (AREA)

Description

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

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 給湯器の給湯管路と風呂釜の循環追い焚き管路
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.
JP1990035916U 1990-02-28 1990-04-03 Backflow prevention device for automatic bath Expired - Lifetime JP2520484Y2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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