Turbo fan and air conditioner with turbo fan
AssigneeLG Electronics Inc.
InventorsSungwon Han, Inho Choi, Kyunghwan Kim, Kidong Kim
Life of this patent
Estimating the term…
Abstract
A turbo fan includes a main plate for rotation in a rotational direction about a rotational axis and a plurality of blades arranged at intervals around the rotational axis of the main plate. At least one blade includes: a first blade section having a leading end and a trailing end; a second blade section having a leading end and a trailing end, wherein the first blade section is between the main plate and the second blade section; and a third blade section having a leading end and a trailing end, wherein the third blade section is between the first blade section and the second blade section.
Claims18
A turbo fan, comprising:
- a main plate for rotation in a rotational direction about a rotational axis;
- and
- a plurality of blades arranged at intervals around the rotational axis of the main plate, at least one blade including:
- a first blade section having a leading end and a trailing end;
- a second blade section having a leading end and a trailing end, wherein the first blade section is between the main plate and the second blade section;
- and
- a third blade section having a leading end and a trailing end, wherein the third blade section is between the first blade section and the second blade section,
- wherein the leading end of the third blade section is disposed more towards a negative pressure side of the blade than the leading end of the first blade section, and
- wherein the trailing end of the first blade section is disposed more towards the rotational direction than the trailing end of the second blade section.
A turbo fan, comprising:
- a main plate for rotation in a rotational direction about a rotational axis;
- and
- a plurality of blades arranged at intervals around the rotational axis of the main plate, at least one blade including:
- a first blade section having a leading end and a trailing end;
- a second blade section having a leading end and a trailing end, wherein the first blade section is between the main plate and the second blade section;
- and
- a third blade section having a leading end and a trailing end, wherein the third blade section is between the first blade section and the second blade section,
- wherein the leading end of the third blade section is disposed more towards a negative pressure side of the blade than the leading ends of the first blade section and the second blade section, and
- wherein the trailing end of the third blade section is disposed between the trailing end of the first blade section and the trailing end of the second blade section in the rotational direction.
An air conditioner, comprising:
- a housing;
- a turbo fan in the housing;
- a motor for rotating the turbo fan;
- and
- a heat exchanger for heating or cooling air sucked into the housing by the turbo fan,
- wherein the turbo fan comprises:
- a main plate for rotation in a rotational direction about a rotational axis;
- and
- a plurality of blades arranged at intervals around the rotational axis of the main plate, at least one blade including:
- a first blade section having a leading end and a trailing end;
- a second blade section having a leading end and a trailing end, wherein the first blade section is between the main plate and the second blade section;
- a third blade section having a leading end and a trailing end, wherein the third blade section is between the first blade section and the second blade section,
- wherein the leading end of the third blade section is disposed more towards a negative pressure surface side of the blade than the leading end of the first blade section, and
- wherein the trailing end of the first blade section is disposed more towards the rotational direction than the trailing end of the second blade section.
Dependencies are inferred from the claim text.