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Centrifugal fans, fresh air devices and air conditioner indoor units

A technology for air-conditioning indoor units and centrifugal fans, which is applied to air-conditioning systems, machines/engines, components of pumping devices for elastic fluids, etc., which can solve the problems of poor air guiding effect and inability to guide the air, and achieve large air volume , the effect of increasing the air volume

Active Publication Date: 2021-09-28
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the conventional air intake grille cannot guide the air intake to the impeller of the centrifugal fan, and its air guide effect is relatively poor.

Method used

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  • Centrifugal fans, fresh air devices and air conditioner indoor units
  • Centrifugal fans, fresh air devices and air conditioner indoor units
  • Centrifugal fans, fresh air devices and air conditioner indoor units

Examples

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, 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 creative efforts fall within the protection scope of the present invention.

[0035] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second" and ...

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PUM

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Abstract

The invention discloses a centrifugal fan, a fresh air device and an air conditioner indoor unit. The centrifugal fan includes a casing, an impeller and an inlet grille. The casing is provided with an air inlet. The impeller is installed in the casing, and the air inlet end of the impeller is opposite to the air inlet. The air inlet grill is arranged at the air inlet, and the air inlet grill includes a base and a plurality of grill rings surrounding the periphery of the base, and the grill rings expand towards the air inlet end of the impeller. Mouth setting. The centrifugal fan of the present invention can prevent the fresh air from blowing directly to the user, improve the air guide effect of the air intake grille, and increase the air guide volume of the impeller of the centrifugal fan by the air intake grille, thereby increasing the air intake of the centrifugal fan. air volume.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a centrifugal fan, a fresh air device and an air conditioner indoor unit. Background technique [0002] Centrifugal fans currently on the market include a casing and an impeller installed in the casing. The casing is provided with an air inlet for supplying air to the impeller, and an air inlet grill is arranged at the air inlet, and the air inlet grill has a plurality of grill rings. The diameter of the inner peripheral edge of these grille rings close to the impeller is basically the same as the diameter of the outer peripheral edge away from the impeller (equivalent to the fact that the grille ring is approximately straight cylindrical along its axial direction). After the air passes through the intake grille, it is directly blown out by the grille ring along its axial direction. That is to say, such a conventional inlet grille cannot direct the inlet air to the impeller of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/70F24F1/0022F24F1/0073F24F1/0035F24F1/0087
CPCF04D29/4226F04D29/703F24F1/0022
Inventor 黄愉太马列安明波黄彪汪先送陈新厂赵维强
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD