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US 11,454,246 B2Granted
Electric blower, vacuum cleaner, and hand drying device
AssigneeMitsubishi Electric Corporation
InventorsKazuchika Tsuchida, Naho Adachi
Life of this patent
Estimating the term…
Abstract
An electric blower includes an air blowing unit including a mixed-flow fan to generate a current of air, a motor to rotate the mixed-flow fan, and a housing including a first portion surrounding the mixed-flow fan in a circumferential direction, and a second portion surrounding the motor in the circumferential direction. The inner diameter of the second portion is smaller than the inner diameter of the first portion.
Claims19
An electric blower comprising:
- an air blowing unit including a mixed-flow fan to generate a current of air;
- a permanent magnet synchronous motor to rotate the mixed-flow fan;
- a housing including a first opening, a second opening communicating with the first opening, a first portion surrounding the mixed-flow fan in a circumferential direction, a second portion surrounding the permanent magnet synchronous motor in the circumferential direction, and a third portion provided between the first portion and the second portion;
- a first path formed between the first portion and the air blowing unit and to allow the air to flow in a first direction;
- and
- a second path formed between the third portion and the guide portion and to allow the air to flow in the second direction,
- wherein the permanent magnet synchronous motor includes a guide portion provided inside the third portion in a radial direction and to guide the air in a second direction, and
- an inner diameter of the second portion is smaller than an inner diameter of the first portion,
- wherein a width of the second path in a direction perpendicular to the second direction is larger than a width of the first path in a direction perpendicular to the first direction.
6 more elements
An electric blower comprising:
- an air blowing unit including a mixed-flow fan to generate a current of air;
- a permanent magnet synchronous motor to rotate the mixed-flow fan;
- a housing including a first opening, a second opening communicating with the first opening, a first portion surrounding the mixed-flow fan in a circumferential direction, a second portion surrounding the permanent magnet synchronous motor in the circumferential direction, and a third portion provided between the first portion and the second portion;
- a first path formed between the first portion and the air blowing unit and to allow the air to flow in a first direction;
- a second path formed between the third portion and the guide portion and to allow the air to flow in the second direction;
- and
- a third path formed between the second portion and the permanent magnet synchronous motor and to allow the air to flow in a third direction,
- wherein the permanent magnet synchronous motor includes a guide portion provided inside the third portion in a radial direction and to guide the air in a second direction, and
- an inner diameter of the second portion is smaller than an inner diameter of the first portion,
- wherein a width of the third path in a direction perpendicular to the third direction is larger than a width of the first path in a direction perpendicular to the first direction.
7 more elements
An electric blower comprising:
- an air blowing unit including a mixed-flow fan to generate a current of air;
- a permanent magnet synchronous motor to rotate the mixed-flow fan;
- a housing including a first opening, a second opening communicating with the first opening, a first portion surrounding the mixed-flow fan in a circumferential direction, a second portion surrounding the permanent magnet synchronous motor in the circumferential direction, and a third portion provided between the first portion and the second portion;
- a first path formed between the first portion and the air blowing unit and to allow the air to flow in a first direction;
- a second path formed between the third portion and the guide portion and to allow the air to flow in the second direction;
- and
- a third path formed between the second portion and the permanent magnet synchronous motor and to allow the air to flow in a third direction,
- wherein the permanent magnet synchronous motor includes a guide portion provided inside the third portion in a radial direction and to guide the air in a second direction, and
- an inner diameter of the second portion is smaller than an inner diameter of the first portion,
- wherein a width of the third path in a direction perpendicular to the third direction is larger than a width of the second path in a direction perpendicular to the second direction.
7 more elements
Dependencies are inferred from the claim text.