Airflow control for an integrated handheld texture sprayer

摘要

A handheld sprayer includes a housing, a turbine, a spray tip, and a hopper. An air flow passage extends through the housing. The turbine is configured to generate an airflow within the air flow passage. The spray tip is positioned to receive airflow from the air flow passage. The hopper is connected to the housing and configured to discharge a fluid into the air flow passage. In one embodiment a valve is positioned within the air flow passage and configured to control the airflow from the turbine to the spray tip. In another embodiment, a voltage limiting circuit is configured to control voltage to an electric motor of the turbine to control speed of the turbine. In another embodiment, an air inlet control device is configured to control the air intake of the turbine.

主权项

1. A handheld sprayer comprising:
a housing through which an air flow passage extends; a turbine configured to generate an airflow within the air flow passage; a spray tip positioned to receive airflow from the air flow passage; a hopper connected to the housing and configured to discharge a fluid into the air flow passage; and an airflow control apparatus selected from a group consisting of:
a rotary vane that rotates to impede airflow from the turbine to the spray tip to control the airflow from the turbine to the spray tip, and a vane control external to the housing that controls the vane;a sliding gate positioned within the airflow passage and configured to control the airflow from the turbine to the spray tip, and a gate control external to the housing that controls the sliding gate;a voltage limiting circuit configured to control voltage to an electric motor of the turbine in order to control the speed of the turbine, and a circuit control external to the housing that controls the voltage limiting circuit in order to control the airflow generated by the turbine; anda plunger moveable to impede the inlet air to the turbine and configured to control the inlet air to the turbine in order to control the airflow generated by the turbine, and a knob external to the turbine that controls movement of the plunger through a screw.