US 12,465,127 B2
Hairdryer
Carlos Jose Ceva, San Prieto in Casale (IT)
Assigned to GA.MA S.R.L, San Prieto in Casale (IT)
Appl. No. 17/754,946
Filed by GA.MA S.R.L, San Prieto in Casale (IT)
PCT Filed Nov. 3, 2020, PCT No. PCT/IB2020/060292
§ 371(c)(1), (2) Date Apr. 16, 2022,
PCT Pub. No. WO2021/090155, PCT Pub. Date May 14, 2021.
Claims priority of application No. 102019000020314 (IT), filed on Nov. 4, 2019.
Prior Publication US 2022/0378166 A1, Dec. 1, 2022
Int. Cl. A45D 20/12 (2006.01)
CPC A45D 20/122 (2013.01) 13 Claims
OG exemplary drawing
 
1. A hairdryer (1) comprising:
a casing (2) provided with a handle (3) and a main body (4) having a main through cavity (13) provided with at least one rear suction opening (5) and a front outlet opening (6);
at least one electric motor (20) and a fan (21) enclosed in said main through cavity (13), said fan (21) being drivable in rotation by said electric motor (20) to generate an air flow (F) with a settled speed inside said main through cavity (13);
an inner diffuser (15) arranged inside said main through cavity (13) at said front outlet opening (6) and provided with a respective through cavity (14) having a passage section decreasing towards said front outlet opening (6) in order to increase the settled speed of said air flow (F), said main body (4) comprising at least one side opening (7) at said front outlet opening (6) to enable air from outside coming into said main through cavity (13) due to drag effect generated by said air flow (F) coming out from said inner diffuser (15) at a high speed so that an air output flow rate (Q2) from said front outlet opening (6) is increased;
an outer outlet element (30) reversibly coupled to said front outlet opening (6) of said main body (4) in an assembly configuration (A) and comprising an outflow tubular portion (31) of the air flow (F) and a coupling tubular portion (32) adapted to be inserted in said front outlet opening (6) and long enough to close said at least one side opening (7) in order to prevent air from entering in said main through cavity (13) due to drag effect and to have an air output flow rate from the outflow tubular portion (31) that is substantially equal to an air initial flow rate (Q1) generated by said fan (21).