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Fan unit and air conditioner equipped with fan unit

A blower and air conditioner technology, applied in air conditioning systems, machines/engines, household appliances, etc., can solve problems such as excessive negative pressure and bias flow, reduced momentum transfer efficiency, collisions, etc., to suppress noise and improve blowing performance Effect

Active Publication Date: 2014-11-05
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Under such circumstances, if the air intake port is directly reduced on the basis of the structure of the above-mentioned conventional blower, when the air flows into the cross-flow fan, excessive negative pressure and bias flow will be generated, thereby changing the flow, and the cross-flow fan The angle formed by the wing and the direction of the airflow becomes larger. As a result, the momentum transfer efficiency of the wing to the fluid decreases, the blowing performance decreases, and the pressure fluctuation increases, and the noise also increases.
In addition, as a result of the narrowing of the suction inlet, the air extruded from the blades of the cross-flow fan deflects toward the suction inlet, and the flow in the section of the cross-flow fan becomes unstable.

Method used

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  • Fan unit and air conditioner equipped with fan unit
  • Fan unit and air conditioner equipped with fan unit
  • Fan unit and air conditioner equipped with fan unit

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Embodiment approach 1

[0031] Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same reference numerals or similar reference numerals are attached to the same or similar portions. However, the drawings are schematic diagrams, and care should be taken that ratios of dimensions and the like may differ from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. In addition, of course, there are parts in which the relationship or ratio of mutual dimensions is different among the drawings.

[0032] figure 1 It is a sectional view of the air conditioner provided with the blower according to Embodiment 1 of the present invention. in addition, figure 2 It is a perspective view of the air conditioner provided with the blower in Embodiment 1 of this invention. In the figure, the housing 1 is composed of the following parts: a front panel 1a, w...

Embodiment approach 2

[0046] In the above-mentioned first embodiment, the structure of the blower is disclosed, that is, by specifying the range of the inflow angle β of the outer peripheral blade, the generation of noise can be suppressed and the blowing performance can be improved when the air suction port is narrow, but in the present invention In the second embodiment, the structure of the above-mentioned blower is defined by the function r(θ), and when the angle from the beginning of the curve of the enlarged air passage of the cover is θ, the function r(θ) is calculated by the rotation of the cross flow fan. Center distances and angles are determined for datums.

[0047] Figure 8 It is an enlarged cross-sectional view around the cross flow fan of the blower according to Embodiment 2 of the present invention. In addition, since the structure and operation|movement of the air conditioner provided with the blower of Embodiment 2 of this invention are the same as that of Embodiment 1 mentioned ...

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Abstract

An air-conditioning apparatus is disclosed that is provided with an air-sending device that includes: a housing (1); a fan (2) that is disposed in the housing (1); a casing (7) that guides an airflow, the casing (7) arranged adjacent to the back side of the fan (2); and a stabilizer (9) that stabilizes the circular vortex, the stabilizer (9) arranged adjacent to the front side of the fan (2). When ´ = A / D expressed by an air flow inlet port (4) width A and a fan diameter D is 2 or lower, an outer peripheral blade inflow angle ² = ´ × ³ radian is in the range of 0.4 ‰¥ ³ ‰¥ 0.3. The air-conditioning apparatus provided with an air-sending device is capable of suppressing noise as well as increasing fan performance even when the inlet port (4) is narrow.

Description

technical field [0001] The present invention relates to a blower and an air conditioner provided with the blower. Specifically, it relates to a casing and a blade (blade, hereinafter sometimes referred to as "cross flow fan") accommodated in the casing Described as blades), and the shape of a casing (casing) provided adjacent to the blower to guide the airflow. Background technique [0002] Generally, a cross-flow blower is used as a blower mechanism of an air conditioner, and is composed of a housing; a cross-flow fan accommodated in the housing; A stabilizer (stabilizer) for stabilizing the circular vortex is provided on the front side so as to be adjacent to the cross flow fan. [0003] When used as the blower mechanism of such an air conditioner, its casing is mostly a substantially rectangular parallelepiped, and is made up of the following parts: a plurality of rigid surfaces for supporting the casing; At least one blowing surface of the mouth) and at least one sucti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F1/00F24F13/20
CPCF24F13/24F24F1/0025F24F2001/0048F04D17/16F04D29/283F04D29/4226F24F1/0057
Inventor 松本崇迫田健一
Owner MITSUBISHI ELECTRIC CORP