公开(公告)号：US06584940B1

公开(公告)日：2003-07-01

申请号：US10042984

申请日：2002-01-09

申请人： Prasad S. Khadkikar ,  Richard L. Gerich ,  Christine M. Hudson ,  Jeffrey A. West ,  Derek J. Rose ,  Douglas J. Kempf ,  Douglas E. Prather ,  Richard E. Welch

发明人： Prasad S. Khadkikar ,  Richard L. Gerich ,  Christine M. Hudson ,  Jeffrey A. West ,  Derek J. Rose ,  Douglas J. Kempf ,  Douglas E. Prather ,  Richard E. Welch

IPC分类号： F24H140

CPC分类号： F23M9/003 ,  F24H1/205 ,  F24H9/0026

摘要： An improved flue pipe construction particularly adapted for a fuel fired water heater is disclosed which serves to reduce or minimize heat loss when the water heater is in a standby mode. The flue pipe construction comprises inner and outer concentric flue pipes which define an air space therebetween and one or more valve arrangements associated therewith to selectively restrict air flow through such air space. The valve arrangements include a thermally responsive actuator operative to open and close the valve member in response to heat generated by firing of the burner assembly without the need for any external power supply or interlocks.

摘要翻译： 公开了一种特别适用于燃料热水器的改进的烟道管结构，其用于在热水器处于待机模式时减少或最小化热损失。 烟道管构造包括内部和外部同心烟道管，其在其间限定空气空间，以及与其相关联的一个或多个阀装置，以选择性地限制通过这种空气空间的气流。 阀装置包括一个热响应致动器，用于响应于通过燃烧器组件的点火而产生的热而打开和关闭阀构件，而不需要任何外部电源或互锁。