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Bearing arrangements in refrigeration reciprocating compressor

A refrigeration compressor and bearing arrangement technology, applied to bearings, crankshaft bearings, shafts and bearings, etc., can solve the problems of high cost and difficulty in use, reduce local wear, avoid the increase of starting torque, and improve bearing conditions Effect

Active Publication Date: 2015-07-29
EMPRESA BRASILEIRA DE COMPRESSORES SA (EMBRACO)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should also be observed that forming the compliant and radial bearing areas directly in the crankcase 10 is also costly, requiring precise dimensional adjustments in machining and finishing operations for each type of compression, making it difficult to use bearing hubs Variation of the common cylindrical shape of the radial bearing area in 40

Method used

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  • Bearing arrangements in refrigeration reciprocating compressor
  • Bearing arrangements in refrigeration reciprocating compressor
  • Bearing arrangements in refrigeration reciprocating compressor

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Embodiment Construction

[0035] As already described and shown previously in Figures 1 and 2 of the accompanying drawings, the bearing arrangement of the invention is suitable for use in refrigeration compressors of the type comprising a crankshaft in the interior of a housing (not shown) The box 10 , the crankcase generally in a single casting, defines a cylinder 20 with axis Z and a bearing hub 40 internally defining a radial bearing 41 with axis X1 .

[0036] A crankshaft 50 having an axis Y1 is mounted inside the radial bearing 41 of the bearing hub 40 and has an eccentric end portion 55 having an axis Y2 outwardly from the first end portion 40a of the bearing hub 40 and a free end portion 56 protruding outward from the second end portion 40 b of the bearing hub 40 .

[0037] Piston 30 is housed in cylinder 20 for displacement therein by reciprocating motion via connecting rod 60 having: an end defining a larger bore 61 mounted about eccentric end portion 55 of crankshaft 50; and opposite end, th...

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Abstract

The compressor comprises: a crankcase (10) carrying a cylinder (20) and a bearing hub (40) having a first and a second end portions (40a, 40b) and defining a radial bearing (41), in which is housed a crankshaft (50); and a connecting rod (60) coupled to a piston (30) housed in the cylinder (20) and having a larger eye (61) mounted in an eccentric end portion (55) of the crankshaft (50). Each of said end portions (40a, 40b) is defined by a bushing extension (45, 46) affixed in the interior of the bearing hub (40) and having an end portion (45a, 46a) projecting outwards from the bearing hub (40), in order to be elastically and radially deformed when pressed by a confronting portion of the crankshaft (50), which presents coaxiality deviation in relation to the axis (X1) of the radial bearing (41).

Description

technical field [0001] The present invention relates to a bearing arrangement introduced in a radial bearing area associated with a crankshaft of a hermetic or non-hermetic reciprocating refrigeration compressor in order to allow said radial bearing area to undergo controlled deformation, so as to at least partially compensate for deviations in the nominal relative positioning of cooperating parts caused by misalignments in the manufacture or assembly of said cooperating parts or by forces acting thereon, and by the operation of the electric motor of the compressor Or caused by compression of refrigerant gas. Background technique [0002] The conventional construction of a reciprocating refrigeration compressor is shown in Figure 1 of the drawings and comprises, within the interior of a housing (not shown), a crankcase 10 carrying a cylinder 20 within which a piston 30 reciprocates sports. [0003] The crankcase 10 is also provided with a bearing hub 40 internally defining...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C3/14F16C25/04F16C33/10F16C33/12F16C33/20F04B39/00F16C3/22
CPCF16C33/121F16C25/04F16C33/205F16C2208/58F16C2208/20F16C33/106F16C33/1025F04B9/045F16C3/08F16C3/22F16C33/128F16C33/125F04B39/0094F16C3/14F16C2223/60F16C9/02F16C9/03F16C33/10F16C33/20
Inventor A·L·曼克R·普夫D·萨科莫里
Owner EMPRESA BRASILEIRA DE COMPRESSORES SA (EMBRACO)
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