JPH01144643U - - Google Patents

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Publication number
JPH01144643U
JPH01144643U JP3685888U JP3685888U JPH01144643U JP H01144643 U JPH01144643 U JP H01144643U JP 3685888 U JP3685888 U JP 3685888U JP 3685888 U JP3685888 U JP 3685888U JP H01144643 U JPH01144643 U JP H01144643U
Authority
JP
Japan
Prior art keywords
passageway
water flow
water
negative pressure
valve
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.)
Pending
Application number
JP3685888U
Other languages
Japanese (ja)
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 JP3685888U priority Critical patent/JPH01144643U/ja
Publication of JPH01144643U publication Critical patent/JPH01144643U/ja
Pending legal-status Critical Current

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Description

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

第1図ないし第4図は本考案の実施例を示し、
第1図は給湯器の構成図、第2図は正常動作状態
の通水検出部の断面図、第3図は排水状態の通水
検出部の断面図、第4図は凍結状態の通水検出部
の断面図である。また、第5図は従来の通水検出
部の断面図である。 1……通水路、3……熱交換器、6……通水検
出部、15……ガス流量制御弁、16……差圧式
作動部、25……負圧伝達路、26……バイパス
路、27……ベンチユリ管、28……隘路部、2
9……負圧検出孔、30,31……第1、第2弁
部、33……戻しバネ、34……押圧部材、40
……連動機構。
1 to 4 show embodiments of the present invention,
Figure 1 is a block diagram of the water heater, Figure 2 is a sectional view of the water flow detection unit in normal operation, Figure 3 is a sectional view of the water flow detection unit in the draining state, and Figure 4 is the water flow in the frozen state. It is a sectional view of a detection part. Moreover, FIG. 5 is a sectional view of a conventional water flow detection section. DESCRIPTION OF SYMBOLS 1... Water passage, 3... Heat exchanger, 6... Water flow detection part, 15... Gas flow control valve, 16... Differential pressure type actuation part, 25... Negative pressure transmission path, 26... Bypass path , 27... Bench lily tube, 28... Defile, 2
9... Negative pressure detection hole, 30, 31... First and second valve parts, 33... Return spring, 34... Pressing member, 40
...Interlocking mechanism.

Claims (1)

【実用新案登録請求の範囲】 熱交換器を介在させた通水路の途中にガス流量
制御弁を開閉する差圧式作動部を配置する一方、
前記通水路の他の箇所に通水に伴う負圧を検出し
て前記差圧式作動部を起動する通水検出部を設け
た給湯器において、 前記通水検出部は、通水路に差圧式作動部とを
連通する負圧伝達路が接続されるとともに、通水
路に並列して該通水路から分岐したバイパス路が
形成され、また、通水路内にはベンチユリ管が摺
動自在に嵌合され、このベンチユリ管には、内径
の一部を縮径した隘路部とこの隘路部を前記負圧
伝達路に連通する負圧検出孔とがそれぞれ形成さ
れるとともに、前記バイパス路を開閉する弁部が
設けられ、かつ、前記ベンチユリ管と通水路内壁
との間に前記弁部を前記バイパス路の閉鎖方向に
付勢する戻しバネが配置されて構成する一方、 前記弁部を開弁方向に押圧する押圧部材をベン
チユリ管に対して出退可能に設けるとともに、こ
の押圧部材の押圧動作に連動して前記通水路の途
中に介在させた排水弁を開く連動機構を備えるこ
とを特徴とする給湯器。
[Claims for Utility Model Registration] A differential pressure type actuator that opens and closes a gas flow rate control valve is disposed in the middle of a passageway with a heat exchanger interposed therebetween,
In the water heater, a water flow detection section is provided in another part of the water flow path to detect negative pressure accompanying water flow and activate the differential pressure type operation section, wherein the water flow detection section is configured to activate the differential pressure type operation section in the water flow path. A negative pressure transmission passage communicating with the passageway is connected, and a bypass passage branched from the passageway is formed in parallel with the passageway, and a bench lily pipe is slidably fitted into the passageway. This bench lily tube is formed with a narrowing portion whose inner diameter is partially reduced and a negative pressure detection hole communicating this narrowing portion with the negative pressure transmission path, and a valve portion for opening and closing the bypass path. is provided, and a return spring is disposed between the bench lily pipe and the inner wall of the water passageway for biasing the valve portion in the closing direction of the bypass passage, while pressing the valve portion in the valve opening direction. The water heater is characterized by being provided with a pressing member that can move in and out of the bench lily pipe, and an interlocking mechanism that opens a drain valve interposed in the middle of the water passage in conjunction with the pressing operation of the pressing member. .
JP3685888U 1988-03-18 1988-03-18 Pending JPH01144643U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3685888U JPH01144643U (en) 1988-03-18 1988-03-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3685888U JPH01144643U (en) 1988-03-18 1988-03-18

Publications (1)

Publication Number Publication Date
JPH01144643U true JPH01144643U (en) 1989-10-04

Family

ID=31263446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3685888U Pending JPH01144643U (en) 1988-03-18 1988-03-18

Country Status (1)

Country Link
JP (1) JPH01144643U (en)

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