Retractable spray hose with automatic shutoff

摘要

A spray hose and spray nozzle for a commercial oven may be retracted on a spring-loaded reel. A position and recent movement of the spring-loaded reel may be used to deduce likely intent of the user with respect to use of the spray nozzle and to electronically activate or deactivate water flow to the spray hose based on the deduced intent.

主权项

1. An oven comprising:
an outer oven housing providing an internal cooking cavity accessible through a door which may be opened and closed about the cavity, the cooking cavity including a heater for heating the cavity cooking food wherein the oven housing has an outer surface accessible to a user from outside the oven housing and an inner volume removed from the cooking cavity and inaccessible to the user from outside the oven housing; a spring biased hose reel held within the inner volume of the oven housing allowing extension of a hose from the hose reel with rotation of the hose reel to unwind the hose in a first direction against a spring biasing and allowing retraction of the hose with rotation winding of the hose about the hose reel in a second opposite direction with the spring biasing; an electronic water valve receiving water from a source of pressurized water and communicating it to the hose on the hose reel when the electronic water valve is opened with a valve open signal; a hose reel sensor sensing a first state of the hose reel when the hose is fully retracted and a second state of the hose reel when the hose is fully extended to provide the valve open signal in the second state and not the first state; and a manually operated nozzle valve communicating the flow of water through a spray nozzle of the hose when the manually operated nozzle valve is opened; wherein the outer surface of the housing includes an opening and the hose extends from the reel through the opening to the manually operated nozzle valve.