Gas appliance with a burner in the lower part, equipped with safety means, and resulting water heater
AssigneeSourdillon
InventorBernard Dane
Life of this patent
Estimating the term…
Abstract
The invention relates to a gas appliance (1), with a gas burner (4) in the lower part of the said appliance and in the vicinity of an underlying surface (6), further comprising: an atmosphere control pilot light (12) fitted with a primary air inlet orifice connected to which is a tube (10), the free orifice (11) of which is located below the gas burner (4); and means (12) for detecting the temperature of the flame (15) of the pilot light which are operationally coupled to means (14) for cutting off the gas supply to the main burner (4); whereby the gas supply to the burner is interrupted when cooling of the flame of the pilot light, caused by gas enrichment of the mixture (vapors in the primary air, air intake obstructed by a liquid phase) is detected.
Claims11
A gas appliance, comprising:
- a lower part of the appliance;
- a gas burner placed in the lower part of the appliance and in the vicinity of a surface underlying the appliance;
- means for cutting off the gas supply to the burner;
- an atmosphere control pilot light connected to the gas supply to the burner, wherein the atmosphere control pilot light includes a primary air inlet orifice to which an air suction tube is connected with one end thereof, and wherein the other end of said air suction tube is located below the gas burner and in the immediate proximity of the surface underlying the appliance;
- and
- means for detecting the temperature of the flame of the pilot light and operationally coupled to the means for cutting off the gas supply to the burner, whereby the gas supply to the burner is interrupted when the temperature detection means detect cooling of the flame of the pilot light which is caused by gas enrichment of the mixture.
The appliance according to claim 4, wherein said means for detecting the temperature of the flame includes at least one thermocouple which is placed in the axis and downstream of the pilot light and the output voltage of which controls the means for cutting off the gas supply to the burner.
Dependencies are inferred from the claim text.