Hot air blower and blowing method
AssigneeDavid & D Ltd.
InventorsDavid Yifrach, Harel Shalom
Life of this patent
Estimating the term…
Abstract
A hot air blower, including: an air channel for blowing a main stream of air therethrough by an electric fan; a gas tank, for supplying burning gas; a gas burner, including: an air inlet, disposed within the air channel, for receiving a first portion of the main air stream; a burning gas inlet for receiving the burning gas; and an outlet, disposed within the air channel, thereby the gas burner produces a flame at the outlet within the air channel, for heating the main air stream; and a mechanism, for automatically fitting a size of the air inlet to an extent of the main air stream and consequently to an extent of the second portion thereof.
Claims6
A hot air blower, comprising:
- an air channel for blowing a main stream of air therethrough by an electric fan;
- a gas tank, for supplying burning gas;
- a gas burner, comprising:
- a) an air inlet, disposed within said air channel, for receiving a first portion of said main air stream;
- b) a burning gas inlet for receiving said burning gas;
- and
- c) an outlet , disposed within said air channel,
- thereby said gas burner produces a flame at said outlet within said air channel, for heating said main air stream,
- wherein the flame is fed
- by said first air portion,
- by said burning gas, and
- by a second portion of the main stream not entering said gas burner;
- and
- a mechanism, for automatically fitting a size of said air inlet to an extent of said main air stream and consequently to an extent of said second portion thereof,
- thereby maintaining the flame durable to changes of said main stream without requiring changing supply rate of the burning gas.
Dependencies are inferred from the claim text.