Patent ID: 7959863
Filing Date: 2011-06-14
Classification: F01N,G01F

Abstract:
1. A liquid state detecting sensor for detecting a state of a liquid, comprising: a liquid concentration detecting element for detecting a concentration of a particular component of the liquid; a holder member holding the liquid concentration detecting element in a state in which a distal end portion of the liquid concentration detecting element protrudes from an element holding hole and having a lower end face which is configured so as to guide bubbles in the inner enclosing member to the inner bubble-discharging hole; an inner enclosing member radially enclosing at least a periphery of the distal end portion of the liquid concentration detecting element to leave an interval with the distal end portion and including an inner bubble-discharging hole; an outer enclosing member radially enclosing a periphery of the inner enclosing member to leave an interval with the inner enclosing member and having an outer bubble-discharging hole which has an upper end located higher than an upper end of the inner bubble-discharging hole; and an interposed member interposed between the inner enclosing member and the outer enclosing member and including an interposed member lower surface which is configured so as to guide bubbles discharged from the bubble-discharging holes to the outer bubble-discharging hole.