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1. CN111373155 - Compact variable geometry diffuser mechanism

Office China
Application Number 201880075086.0
Application Date 21.09.2018
Publication Number 111373155
Publication Date 03.07.2020
Publication Kind A
IPC
F04D 27/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
27Control, e.g. regulation, of pumps, pumping nstallations or pumping systems specially adapted for elastic fluids
02Surge control
F04D 29/46
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
40Casings; Connections for working fluid
42for radial or helico-centrifugal pumps
44Fluid-guiding means, e.g. diffusers
46adjustable
CPC
F04D 27/0246
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
27Control, e.g. regulation, of pumps, pumping installations or systems
02Surge control
0246by varying geometry within the pumps, e.g. by adjusting vanes
F04D 29/464
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
40Casings; Connections of working fluid
42for radial or helico-centrifugal pumps
44Fluid-guiding means, e.g. diffusers
46adjustable
462especially adapted for elastic fluid pumps
464adjusting flow cross-section, otherwise than by using adjustable stator blades
F05D 2250/52
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2250Geometry
50Inlet or outlet
52Outlet
Applicants JOHNSON CONTROLS TECH CO
江森自控科技公司
Inventors STEINER JORDAN Q
乔丹·Q·斯坦尔
SNELL PAUL W
保罗·W·斯內尔
Agents 上海脱颖律师事务所 31259
Priority Data 62/562,682 25.09.2017 US
Title
(EN) Compact variable geometry diffuser mechanism
(ZH) 紧凑可变几何形状的扩散器机构
Abstract
(EN)
A diffuser system for a centrifugal compressor is provided.. The diffuser system includes a nozzle base plate (206) that defines a diffuser gap (212), support blocks (216, 246), and a drive ring (220)rotatable relative to the support blocks. The drive ring includes cam tracks (224, 242) and bearing assemblies (226, 234) positioned proximate an outer circumference of the drive ring. The diffuser system further includes drive pins (214) extending through the support blocks and the nozzle base plate. The first end of each drive pin includes a cam follower (218) mounted into a cam track on the drive ring. The second end of each drive pin is coupled to a diffuser ring (208). Rotation of the drive ring causes axial movement of the drive pins by movement of the cam followers in the cam tracks. This results in movement of the diffuser ring to control fluid flow through the diffuser gap.

(ZH)
提供了一种用于离心压缩机的扩散器系统。所述扩散器系统包括限定扩散间隙(212)的喷嘴基板(206)、支撑块(216,246)、和相对于所述支撑块可旋转的驱动环(220)。所述驱动环包括凸轮轨道(224,242)和轴承组件(226,234),所述轴承组件定位在所述驱动环的外圆周附近。所述扩散器系统进一步包括延伸穿过所述支撑块和所述喷嘴基板的驱动销(214)。每个驱动销的第一端包括安装到所述驱动环上的凸轮轨道中的凸轮从动件(218)。每个驱动销的第二端联接到扩散环(208)。所述驱动环的旋转通过使所述凸轮轨道中的凸轮从动件移动而引起所述驱动销的轴向移动。这引起所述扩散环的移动以控制穿过所述扩散间隙的流体流动。

Also published as
JP2020517099