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Air compressor

An air compressor and casing technology, which is applied in the field of compressor manufacturing, can solve the problems of long shaft bearing length, etc., and achieve the effects of large sealing length, improved performance, and reduced leakage between stages

Pending Publication Date: 2022-08-05
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the present invention provides an air compressor, which can overcome the contradiction between the sealing performance of the main shaft of the air compressor shaft and the design of the shaft length in the related art, which leads to the need for a larger sealing length when the air compressor has higher performance. , resulting in the insufficient length of the shaft bearing

Method used

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Embodiment Construction

[0030] see in combination Figure 1 to Figure 6 As shown, the present invention provides an air compressor, especially an ultra-high-speed oil-free two-stage air compressor for an air suspension fuel cell engine, comprising a casing 1 and a rotor assembly, and a motor stator is assembled in the casing 1 And the rotor assembly, an axial end of the casing 1 has a first end plate 11, the rotor assembly includes a rotating shaft 21, and one end of the rotating shaft 21 is connected with a first impeller 22 (specifically, a semi-open impeller ), the side of the hub of the first impeller 22 facing the first end plate 11 (which can be understood as the back side of the hub) is provided with a first sealing convex ring 221, and the first end plate 11 is facing the first end plate 11. One side of the impeller 22 has a first sealing ring groove 111 , the first sealing convex ring 221 is located in the first sealing ring groove 111 , and the first sealing convex ring 221 and the first se...

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Abstract

The air compressor comprises a machine shell and a rotor assembly, the machine shell is provided with a first end plate, the rotor assembly comprises a rotating shaft, one end of the rotating shaft is connected with a first impeller, and a first sealing convex ring is arranged on the side, facing the first end plate, of a hub of the first impeller; a first sealing ring groove is formed in the side, facing the first impeller, of the first end plate, the first sealing convex ring is located in the first sealing ring groove, and a labyrinth sealing structure can be formed between the first sealing convex ring and the first sealing ring groove. According to the air compressor, the larger sealing length can be achieved while the axial length of the rotating shaft is not increased, so that interstage leakage of gas is effectively reduced, and the performance of the air compressor is improved.

Description

technical field [0001] The invention belongs to the technical field of compressor manufacturing, and in particular relates to an air compressor. Background technique [0002] With the increasing demand for energy saving and environmental protection, the development and research of vehicle fuel cell systems have made great progress under the vigorous development of national policies and hydrogen fuel cell technology. As the "heart" of the vehicle fuel cell system, the air compressor is also a hotspot of current research. The direction and magnitude of the axial force of the air compressor are very important to the design of the gas bearing. At the same time, excessive air leakage between the stages will reduce the performance of the air compressor. For a two-stage air compressor, improper design of the rotor assembly will cause axial The force is too large and the direction changes with the operating conditions, which reduces the safety and stability of the gas axial bearing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D17/12F04D29/12F04D29/66F04D29/057
CPCF04D17/122F04D29/122F04D29/662F04D29/666F04D29/057Y02E60/50
Inventor 杨国蟒曾轲
Owner GREE ELECTRIC APPLIANCES INC