Blower housing pressurization structure

Abstract

A blower housing pressurization structure includes a power seat, a first joint, two half-shells, an air outlet, two air inlets, a second joint, a coupling key, and at least a guiding protrusion. Each half-shell is arranged on each side of the power seat. Each half-shell includes an outer side surface, an inner side surface, a first combination section and a second combination section. Each first combination section has a chamber for accommodating a wind impeller being positioned at each side of the power seat. Each second combination section is formed an air outlet for communicating to each chamber. The two air inlets are formed by an aperture penetrating each half-shell, and each air inlet is communicated to each chamber. At least one guiding protrusion is arranged on the inner side surface of each first combination section and corresponds to the wind impeller.

1 . A blower housing pressurization structure, comprising at least:
 a power seat, including at least two opposite side surfaces, in which a through hole is formed between the middle sections of the two side surfaces for accommodating a motor of which the opposite sides respectively extend outward in the direction of the two side surfaces with a rotating shaft for installation of a wind impeller;   a first joint, being arranged on each side surface;   two half shells, in which each half shell is provided on the two sides of the power seat and includes at least an outer side surface, an inner side surface, a first combination section extending from a part of the outer side surface toward the power seat, and a second combination section extending from another part of the outer side surface, in which   each of the first combination sections is assembled and arranged on the power seat respectively so that each of the first combination sections and the two side surfaces of the power seat respectively form an accommodation chamber for accommodating the wind impeller,   each of the second combination sections is arranged correspondingly to each other so that the air outlet is formed between the second combination sections to communicate with each of the accommodation chambers;   two air inlets, being formed by an aperture penetrating the outer side surface and the inner side surface of each half-shell and being communicated respectively to each accommodation chamber;   a second joint, being corresponding to the first joint and provided on the outer side surface of each half-shell;   a coupling key, being arranged between the first joint and the second joint to connect the half shells to the power seat; and   at least one guiding protrusion, being arranged on the inner side surface of each first combination section and corresponds to the wind impeller.   
     
     
         2 . The blower housing pressurization structure as claimed in  claim 1 , wherein the first joint is configured with two spaced openings, the second joint is configured with an opening for an coupling key being selected from the group consisting of screws and rivets, and the position of the guiding protrusion corresponds to the position of the second joint for forming a concave portions corresponding to the guiding protrusion at the outer side of each half-shell corresponding to the position of the guiding protrusion. 
     
     
         3 . The blower housing pressurization structure as claimed in  claim 1 , wherein one end of the concave portion is adjacent to the second joint. 
     
     
         4 . The blower housing pressurization structure as claimed in  claim 1 , wherein the guiding protrusion is configured as a long protrusion in the axial direction of the rotating shaft. 
     
     
         5 . The blower housing pressurization structure as claimed in  claim 2 , wherein the guiding protrusion is configured as a long protrusion in the axial direction of the rotating shaft and the concave portion is set as a groove. 
     
     
         6 . The blower housing pressurization structure as claimed in  claim 3 , wherein the guiding protrusion is configured as a long protrusion in the axial direction of the rotating shaft and the concave is set as a groove.