초록 ▼

A scroll machine designed to provide an unbalanced loading of the orbiting scroll and anti-rotation coupling in a direction which adds to the moment caused by contact forces between the scroll wraps during normal operation. The loading decreases the sound level of the machine and is achieved through

A scroll machine designed to provide an unbalanced loading of the orbiting scroll and anti-rotation coupling in a direction which adds to the moment caused by contact forces between the scroll wraps during normal operation. The loading decreases the sound level of the machine and is achieved through the use of unbalanced flank gas leakage forces and flank contact forces, which are created by providing a targeted initial swing radius bias and/or a generating radius bias to either one or both of the scroll wraps. The generating radius biasing can be singular or plural on a given scroll wrap set. A number of different techniques for obtaining such biasing are disclosed.

대표청구항 ▼

A scroll machine having improved sound attenuation, comprising: (a) first and second scroll members each having a spiral wrap disposed thereon, said scroll members being mounted for relative orbital movement therebetween with said wraps intermeshed with one another; (b) means for causing one of said

A scroll machine having improved sound attenuation, comprising: (a) first and second scroll members each having a spiral wrap disposed thereon, said scroll members being mounted for relative orbital movement therebetween with said wraps intermeshed with one another; (b) means for causing one of said scroll members to orbit with respect to the other scroll member so that said wraps create pockets of progressively changing volume; (c) anti-rotation means for preventing relative rotational movement between said scroll members, said anti-rotation means causing said first and second scroll members to be maintained in a misaligned relationship from the normal angular alignment of a nominal scroll machine by an angular amount providing an initial swing radius bias which results in an additional moment on said scroll members caused by the contact forces between said wraps. A method of fabricating a scroll machine having improved sound attenuation wherein the machine comprises first and second scroll members each having a spiral wrap disposed thereon, said scroll members being mounted for relative orbital movement therebetween with said wraps intermeshed with one another to define a scroll set, so that said wraps will create pockets of progressively changing volume in response to said orbital movement, said method comprising the following steps: accurately controlling initial swing radius bias (dRis) and generating radius bias (dRg) during fabrication of the respective components of the machine to maintain a targeted relationship between dRis and dRg which results in an additional moment on the scroll members caused by the contact forces between the wraps during operation of the machine; and assemblying the machine in such a way as to maintain the targeted dRis and dRg. A method of fabricating a scroll machine having improved sound attenuation wherein the machine comprises first and second scroll members each having a spiral wrap disposed thereon, said scroll members being mounted for relative orbital movement therebetween with said wraps intermeshed with one another to define a scroll set, so that said wraps will create pockets of progressively changing volume in response to said orbital movement, said method comprising the following steps: accurately controlling generating radius bias (dRg) during fabrication of the respective components of the machine to maintain a targeted value of dRg which results in an additional moment on the scroll members caused by the contact forces between the wraps during operation of the machine; and assemblying the machine in such a way as to maintain the targeted dRg.