Centrifugal fan, centrifugal fan assembly and air conditioner with centrifugal fan assembly
A centrifugal fan and component technology, which is applied in air conditioning systems, machines/engines, pump components, etc., can solve the problems of air volume loss, noise impact, etc., and achieve the effect of meeting the wind demand
Inactive Publication Date: 2020-05-26
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the air volume loss and the large noise affecting the comfort of the centrifugal fan used in the prior art to provide a centrifugal fan that can improve the comfort of the air conditioner. , centrifugal fan unit and air conditioner with it
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[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention relates to the technical field of air conditioners, in particular to a centrifugal fan, a centrifugal fan assembly and an air conditioner with the centrifugal fan assembly. The centrifugal fan which comprises a volute, the volute is provided with a fan blade assembly mounting cavity and an air outlet communicated with the fan blade assembly mounting cavity, a plane perpendicular to arotating shaft of a fan blade assembly is defined as a first plane, and the section, cut by the first plane, of an air outlet of the centrifugal fan comprises a first side wall and a second side wall, the first side wall is close to the side of the fan blade assembly mounting cavity; the second side wall is far away from one side of the fan blade assembly mounting cavity; an included angle formedby the first side wall and the vertical plane is a diffusion angle b, and the diffusion angle b meets the condition that b is larger than 30 degrees and smaller than 40 degrees. Under the condition that the relative position of a volute tongue is fixed, the larger the diffusion angle is, the lower the air outlet speed is, vortexes are likely to occur, the air outlet amount is reduced, and the diffusion angle b of the centrifugal fan is set to be larger than 30 degrees and smaller than 40 degrees, so that the requirement for the air speed is met, and air amount losses are avoided.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to a centrifugal fan, a centrifugal fan assembly and an air conditioner with the same. Background technique [0002] Existing air conditioner fans mostly use cross-flow fans or centrifugal fans. Cross-flow fans have uniform air output and low noise, but their air supply distance is limited due to their small pressure heads. Operating at a relatively low speed, and constrained by the shape, size and appearance of the product, the existing air conditioners that realize up and down air flow mostly use the air channel of the centrifugal fan blade to achieve air flow. However, there are the following problems when centrifugal fan blades are used to realize the upper and lower air outlets of the air conditioner: On the one hand, due to the high position of the upper air outlet, it is necessary to set up an effective air pressure and air guide structure to ensure that the air can ...
Claims
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Login to View More IPC IPC(8): F04D29/42F04D29/28F24F1/0022
CPCF04D29/4226F04D29/281F24F1/0022
Inventor 余明养杨春霞郑海文欧峥李佳鹏罗胜王振勇陈珠秀程春雨陈荣华何振健赵毓斌孙小洪王高敏王千千钱强
Owner GREE ELECTRIC APPLIANCES INC