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Scroll compressor with soft start

A technology of scroll compressors and moving scrolls, applied in the field of scroll compressors, can solve the problems of damaging the reliability and life of scroll compressors, and achieve the effect of improving reliability and life

Inactive Publication Date: 2018-09-14
DANFOSS COMML COMPRESSORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Therefore, the configuration of the aforementioned disclosed scroll compressors cannot ensure an optimal oil supply to the bearings when the compressor is started, which may compromise the reliability and life of the scroll compressors

Method used

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  • Scroll compressor with soft start
  • Scroll compressor with soft start
  • Scroll compressor with soft start

Examples

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no. 1 example

[0104] According to a first embodiment of the invention, the actuating device 47 comprises a sealing ring 58 configured to seal the damping chamber 55 from the high-pressure chamber 14 . The sealing ring 58 may eg be configured to cooperate with the inner peripheral surface of the tubular side 53 and the outer guide surface of the guide member 52 . The sealing ring 58 may, for example, be fixed to the guide member 52 .

[0105] The operation of the scroll compressor 1 according to the first embodiment will be described below.

[0106] In the off state of the scroll compressor 1, when the pressures in the low and high pressure chambers 13 and 14 and the damping chamber 55 are balanced, the biasing member 49 holds the actuating element 48 in its first position and bypasses the Valve element 46 remains in the open position.

[0107] When the compressor starts, the pressure in the high pressure chamber 14 rises due to the compressed refrigerant being discharged from the main dis...

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PUM

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Abstract

The invention discloses a scroll compressor including a hermetic casing, a compressing unit (9) arranged in the hermetic casing and defining a low pressure chamber and a high pressure chamber with the hermetic casing, and the soft-start device (43) comprising a bypass passage (44) configured to fluidly communicating the high-pressure volume with the low pressure volume, a bypass valve element (46) movable between an open position for opening the bypass passage (44) and a closed position for closing the bypass passage (44), and an actuating device (47) configured to move the bypass valve element (46) in the closed position during a running state of the scroll compressor and to move the bypass valve element to the open position during a stop state of the scroll compressor. The actuating device (47) includes a delay system (51) configured to delay a closing movement of the bypass valve element (46) for a predetermined period when the scroll compressor is started.

Description

technical field [0001] The invention relates to a scroll compressor, in particular to a scroll refrigeration compressor. Background technique [0002] A scroll compressor is known to include: [0003] Hermetic housing including suction and discharge ports, [0004] a compression unit including a fixed scroll and a movable scroll, the compression unit being disposed in an airtight housing and defining a high pressure chamber and a low pressure chamber together with the airtight housing, [0005] a drive shaft configured to drive the orbiting scroll in orbital motion, [0006] a plurality of bearings configured to rotatably support the drive shaft, [0007] a lubrication system having an oil pump and configured to lubricate bearings, [0008] a bypass passage configured for fluid communication between the high pressure chamber and the low pressure chamber, [0009] a bypass valve element movable at least between an open position in which the bypass valve element opens the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/02F04C23/02F04C28/06F04C28/26
Inventor 皮埃尔·吉尼艾斯瑞米·布达尔汗姆大卫·吉纳夫欧斯菲利浦·杜伽斯特
Owner DANFOSS COMML COMPRESSORS