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A heat blower

A blower and hot air technology, applied in chemical instruments and methods, dispersed particle filtration, application, etc., can solve problems such as difficult fan inhalation of fine dust

Active Publication Date: 2011-01-19
MATSUSHITA ELECTRIC WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the pore size of the intermediate filter is almost equal to that of the outer filter, it is difficult to prevent the fan from sucking fine dust etc. through the inlet

Method used

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Embodiment Construction

[0025] figure 1 A hot air blower (hair dryer) according to an embodiment of the present invention is shown. figure 1 and figure 2 The blower shown comprises a cylindrical housing 4 with an inlet opening 41 , an outlet opening 42 and a spray opening 43 . The inflow port 41 is positioned at the rear end of the housing 1 . The outflow port 42 is located at the lower part of the front end of the housing 1 , while the spray port 43 is located at the upper part of the front end of the housing 1 , and the upper part is set as a recess retracted backward relative to the lower part.

[0026] The housing 4 also has a pivot base 44 having a pivot 45 and branching from the bottom side of the cylindrical surface of the housing 4 . The pivot base 44 is connected to the handle 5 through a pivot 45 so that the handle 5 can rotate on the pivot 45 . The housing 4 further has a square frame 6 capable of being attached to and detached from the edge of the inflow port 41 .

[0027] The housi...

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Abstract

A heat blower includes an air passage having an inlet and an outlet, and a fan and a heater which are put in the air passage. The blower further includes first and second filters. The first filter covers at least the inlet. The second filter has a mesh structure, and is located between the first filter and the inlet so that it covers at least the inlet. The second filter has a mesh opening width in the range from 300 to 650[mu]m, and an open area ratio in the range from 55 to 90%.

Description

technical field [0001] The present invention generally relates to a hot air blower, and more particularly relates to a hot air blower such as a hair dryer and a heater. Background technique [0002] A hot air blower such as a hair dryer or heater includes an air duct, a fan, and a heater. The air duct has an inlet and an outlet. A fan is disposed in the air duct and rotates to generate air flow from the inlet to the outlet. A heater is also provided in the air duct and heats the air flowing in the air duct. Hot air flows out from the outlet. [0003] Such hot air blowers are usually equipped with a filter at the inlet in order to remove dirt such as dirt, dust, hair so that said dirt cannot enter the air duct. In some hair dryers, a mesh (for example a perforated plate) with openings of a few millimeters in diameter is used as such a filter. The mesh is made of metal or synthetic resin so as to have shape retaining properties (rigid, semi-rigid or flexible) in order to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A45D20/12A45D20/10
CPCB01D46/10A45D20/12B01D46/0023B01D46/62
Inventor 田中秀树石川朋哉
Owner MATSUSHITA ELECTRIC WORKS LTD