Cooling air blower with combustion air channel
First Claim
1. A cooling air blower for a combustion engine comprising:
- a cooling air channel for supplying cooling air to a combustion engine for cooling;
a blower fan for conveying air into said cooling air channel, wherein a cooling air flow is established having a main flow direction in said cooling air channel tangential to said blower fan;
a combustion air channel branching off said cooling air channel for guiding air for combustion to an intake member of the combustion engine;
said combustion air channel having a section extending adjacent to said cooling air channel; and
said combustion air channel having an air intake socket within said section, said air intake socket being narrower than said cooling air channel and, in a radial plane of said blower fan, extending transverse to said main air flow direction of the cooling air in said cooling air channel, said air intake socket positioned at a slant relative to said radial plane of said blower fan and having an inlet opening, located on a side of said intake socket facing away from said blower fan, for allowing passage of air from said cooling air channel into said combustion air channel.
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Accused Products
Abstract
A cooling air blower for a combustion engine for a two-stroke engine of a hand-held working tool has a cooling air channel for supplying cooling air to a combustion engine and a blower fan for conveying air into the cooling air channel. A combustion air channel branches off the cooling air channel for guiding combustion air to an intake member of the combustion engine. The combustion air channel has a section extending adjacent to the cooling air channel. The combustion air channel has furthermore an air intake socket within that section, the air intake socket being narrower than the cooling air channel and extending transverse, when viewed in a plan view, to a main air flow direction of the cooling air channel into the cooling air channel. The air intake socket is positioned at a slant relative to the main air flow direction and has an inlet opening located on a side of the intake socket facing away from the blower fan. The inlet opening allows passage of air from the cooling air channel into the combustion air channel.
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Citations
14 Claims
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1. A cooling air blower for a combustion engine comprising:
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a cooling air channel for supplying cooling air to a combustion engine for cooling; a blower fan for conveying air into said cooling air channel, wherein a cooling air flow is established having a main flow direction in said cooling air channel tangential to said blower fan; a combustion air channel branching off said cooling air channel for guiding air for combustion to an intake member of the combustion engine; said combustion air channel having a section extending adjacent to said cooling air channel; and said combustion air channel having an air intake socket within said section, said air intake socket being narrower than said cooling air channel and, in a radial plane of said blower fan, extending transverse to said main air flow direction of the cooling air in said cooling air channel, said air intake socket positioned at a slant relative to said radial plane of said blower fan and having an inlet opening, located on a side of said intake socket facing away from said blower fan, for allowing passage of air from said cooling air channel into said combustion air channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification