Connecting structure of guide ring and fan impeller front disc and air conditioner
A fan impeller and connection structure technology, which is applied to parts, mechanical equipment, machines/engines, etc. of elastic fluid pumping devices, can solve the problems of fan leakage and reduce the working efficiency of fans, so as to solve the leakage loss and reduce the Leakage, good user experience
Active Publication Date: 2018-04-17
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
When the centrifugal fan rotates to work, the air enters the impeller front plate 2' from the air outlet of the guide ring 1', and the blade 3' does work on the gas around it, forming a In the high-pressure area, a low-pressure area is formed at the installation position of the air inlet end 6' and the guide ring 1', causing part of the gas to come out from the air outlet of the fan and enter again through the gap between the guide ring 1' and the air inlet end 6' into the front disc 2' of the impeller, causing fan leakage and reducing the working efficiency of the fan
Method used
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[0035] The present invention is described below based on the embodiments, and those skilled in the art should understand that the drawings provided here are for the purpose of illustration, and the drawings are not necessarily drawn to scale.
[0036] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.
[0037] Note: In this application, the up-down direction is defined as: image 3 In the axial direction of the guide ring 1, the direction from the motor 2 to the guide ring 1 is defined as up, and the direction from the guide ring 1 to the motor 2 is defined as down; and, image 3 The radially outer side of the middle guide ring 1 is defined as outer, and the radially inner side of the guide ring 1 is defined as inner.
[0038] Such as Figure 1 to Figure 7 As shown, ...
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The invention provides a connecting structure of a guide ring and a fan impeller front disc and an air conditioner. An intake port is formed in the impeller front disc; the guide ring is arranged in the intake port, and is provided with a first assembly part; the impeller front disc is provided with a second assembly part corresponding to the first assembly part; and the first assembly part and the second assembly part cooperate to form a labyrinth structure in the radial direction of the guide ring. A gap between the end part of the intake port of the impeller front disc of a fan and the guide ring cannot form an effective runner, so that the leakage quantity of wind in the process of entering an impeller from the guide ring is reduced, and the working efficiency of the fan is improved. Meanwhile, air currents in a high-pressure area in an exhaust port of the fan can be effectively stopped from refilling into the impeller front disc by the gap between the guide ring and the end of theintake port of the impeller front disc, so that the leakage loss caused by the gap between the guide ring and the end of the intake port of the impeller front disc is solved, and the working efficiency of the fan is improved.
Description
technical field [0001] The invention relates to the field of fans, in particular to a connection structure between a guide ring and a front plate of a fan impeller and an air conditioner. Background technique [0002] Outer rotor centrifugal fans are widely used in computer room air conditioners. Usually, the air inlet end of the centrifugal fan is provided with a deflector ring to limit the air inlet path of the centrifugal fan. . [0003] Such as figure 1 As shown, it is the connection structure between the existing guide ring and the front plate of the fan impeller. The centrifugal fan includes the front plate of the impeller 2', the blade 3', the rear plate of the impeller 4' and the motor 5', and the front plate of the impeller 2' is far away from the blade 3 One end of 'forms the air inlet end 6', and the air inlet end 6' is installed in cooperation with the guide ring 1'. The guide ring 1' is fixed inside the air conditioner (not shown in the figure), the blade 3' ...
Claims
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IPC IPC(8): F04D29/28F04D29/62
CPCF04D29/281F04D29/626
Inventor 张苏北曹雷邹建煌刘洋
Owner GREE ELECTRIC APPLIANCES INC