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JPH06281177A Expired / Lapsed JP ⏱️ 0.0 years remaining

Reverse flow preventive device for hot water supplying device or the like

Assignee: Noritz Corp
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Filing: 1993-03-30
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Granted: —
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Expires: 2013-03-30
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 注水時には確実にオーバフロー水の発生を防 止することができ、また逆流が生じた場合には確実に上 流側への逆流を防止することができ、また全体としてコ ンパクトな給湯器等における逆流防止装置の提供を目的 とする。 【構成】 装置本体10に設けられる内空間を給湯路の上 流側に接続される一次空間20と給湯路の下流側に接続さ れる二次空間30とにバネ41付勢のダイヤフラム弁40で仕 切ると共に、二次空間30の側部には、ダイヤフラム弁40 が一次空間20側の圧力によって二次空間30側に押された ときに閉止されるオーバフロー通路口81を設け、ダイヤ フラム弁40の中央部には、一次空間20と二次空間30とを 連通させる給水通路穴92と、給水通路穴92を介してダイ ヤフラム弁40を二次空間30側に押動する圧力よりも強い 圧力が一次空間20側から加わったときに給水通路穴92を 開放するバネ93付勢の給水通路弁94とを備えた給水通路 構成体90を取りつけた。 (57) [Summary] [Purpose] When water is injected, overflow water can be reliably prevented, and if backflow occurs, it can be reliably prevented from flowing back to the upstream side. An object of the present invention is to provide a backflow prevention device for a hot water heater or the like. [Structure] The inner space provided in the apparatus body 10 is partitioned by a diaphragm valve 40 biased by a spring 41 into a primary space 20 connected to the upstream side of the hot water supply passage and a secondary space 30 connected to the downstream side of the hot water supply passage. At the same time, the diaphragm valve 40 is installed on the side of the secondary space 30. Is provided with an overflow passage port 81 that is closed when being pushed to the secondary space 30 side by the pressure of the primary space 20 side, and the primary space 20 and the secondary space 30 are communicated with each other in the central portion of the diaphragm valve 40. A water supply passage hole 92 and a spring 93 that opens the water supply passage hole 92 when a pressure stronger than the pressure for pushing the diaphragm valve 40 to the secondary space 30 side through the water supply passage hole 92 is applied from the primary space 20 side. A water supply passage arrangement 90 with a biased water supply passage valve 94 was installed.

Inventors

  • 👤 Makoto Hamada
  • 👤 誠 濱田
  • 👤 Akira Yoshida
  • 👤 晶 吉田

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-08 15:37
CPC Classifications
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