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US 5,320,507 AGranted
Scroll machine with reverse rotation protection
AssigneeCopeland Corporation
InventorsKenneth J. Monnier, Francis M. Simpson
Life of this patent
Estimating the term…
Abstract
A scroll compressor has a fluid brake for resisting and impeding objectionable reverse movement of the orbiting scroll member. The brake includes a one-way clutch interconnecting a drive shaft and a paddle disposed in the compressor oil sump, and optionally a rotor shield for controlling oil flow around the lower end of the motor rotor. A two piece paddle has a rotatable paddle having blades to impart angular momentum to the lubricating oil and a stationary housing having vanes to resist the angular momentum imparted to the lubricating oil by the blades of the rotatable housing.
Claims31
A powered work producing apparatus requiring lubrication and having direction drive control, comprising:
- (a) an enclosure having an oil reservoir, said oil reservoir containing a quantity of lubricating oil;
- (b) a powered mechanism for performing work disposed in said enclosure;
- (c) motor means including a drive shaft coupled to said mechanism for operatively driving same;
- (d) means for supplying said lubricating oil from said oil reservoir to said powered work producing apparatus for effecting lubrication of said apparatus;
- (e) a paddle disposed in said lubricating oil for rotation therein, said paddle having a plurality of blades orientated such that rotation of said paddle within said lubricating oil is resisted by said plurality of blades imparting angular momentum to said lubricating oil;
- and
- (f) one-way drive means operatively connecting said drive shaft to said paddle, whereby undesirable rotation of said drive shaft in one direction causes said paddle to be driven by said drive shaft, said paddle resisting said undesirable rotation of said drive shaft by imparting angular momentum to said lubricating oil, said one-way drive means permitting free rotation of said drive shaft in the opposite direction.
4 more elements
A rotary compressor requiring lubrication, comprising:
- (a) an enclosure having an oil reservoir, said oil reservoir containing a quantity of lubricating oil;
- (b) rotary compressor means disposed in said enclosure;
- (c) motor means including a rotor driven shaft coupled to said compressor means for operatively driving same;
- (d) means for supplying said lubricating oil from said oil reservoir to said rotary compressor for effecting lubrication of said apparatus;
- (e) a counterweight on the lower end of said rotor;
- (f) a paddle disposed in said lubricating oil for rotation therein, said paddle having a plurality of blades oriented such that rotation of said paddle within said lubricating oil is resisted by said plurality of blades imparting angular momentum to said lubricating oil;
- (g) a shield on said paddle for controlling oil flow around the lower end of said rotor and said crank shaft;
- and
- (h) one-way drive means operatively connecting said rotor driven shaft to said paddle, whereby undesirable rotation of said rotor driven shaft in one direction causes said paddle to be driven by said rotor driven shaft, said paddle resisting said undesirable rotation of said rotor driven shaft by imparting angular momentum to said lubricating oil, said one-way drive means permitting free rotation of said rotor driven shaft in the opposite direction.
6 more elements
A scroll compressor requiring lubrication, comprising:
- (a) an enclosure having an oil reservoir, said oil reservoir containing a quantity of lubricating oil;
- (b) scroll compressor means disposed in said enclosure;
- (c) motor drive means including a drive shaft coupled to said compressor means for operatively driving same;
- (d) means for supplying said lubricating oil from said oil reservoir to said scroll compressor for effecting lubrication of said apparatus;
- (e) a paddle disposed in said lubricating oil, said paddle having a plurality of blades orientated such that rotation of said paddle within said lubricating oil is resisted by said plurality of blades imparting angular momentum to said lubricating oil;
- and
- (f) one-way drive means operatively connecting said drive shaft to said paddle, whereby undesirable rotation of said drive shaft in one direction causes said paddle to be driven by said drive shaft, said paddle resisting said undesirable rotation of said drive shaft by imparting angular momentum to said lubricating oil, said one-way drive means permitting free rotation of said drive shaft in the opposite direction.
4 more elements
A scroll compressor requiring lubrication, comprising:
- (a) an enclosure having an oil reservoir, said oil reservoir containing a quantity of lubricating oil;
- (b) scroll compressor means disposed in said enclosure;
- (c) motor drive means including a drive shaft coupled to said compressor means for operatively driving same;
- (d) means for supplying said lubricating oil from said oil reservoir to said scroll compressor for effecting lubrication of said apparatus;
- (e) a paddle disposed in said lubricating oil, said paddle comprising:
- a first housing defining a first annular cavity;
- a plurality of blades disposed within said first annular cavity and oriented such that rotation of said paddle within said lubricating oil is resisted by said plurality of blades imparting angular momentum to said lubricating oil;
- a second housing fixedly secured to said enclosure and defining a second annular cavity;
- and
- a plurality of vanes disposed within said second annular cavity and positioned to resist angular momentum imparted to said lubricating oil by said plurality of blades of said first housing when said first housing rotates within said lubricating oil;
- and
- (f) one-way drive means operatively connecting said drive shaft to said paddle, whereby undesirable rotation of said drive shaft in one direction causes said paddle to be driven by said drive shaft, said paddle resisting said undesirable rotation of said drive shaft by imparting angular momentum to said lubricating oil, said one-way drive means permitting free rotation of said drive shaft in the opposite direction.
9 more elements
A scroll compressor requiring lubrication, comprising:
- (a) an enclosure having an oil reservoir, said oil reservoir containing a quantity of lubricating oil;
- (b) scroll compressor means disposed in said enclosure;
- (c) motor drive means including a drive shaft coupled to said compressor means for operatively driving same;
- (d) means for supplying said lubricating oil from said oil reservoir to said scroll compressor for effecting lubrication of said apparatus;
- (e) a paddle disposed in said lubricating oil, said paddle comprising:
- a first housing defining a first annular cavity, said first housing having a curved exterior surface;
- a plurality of blades disposed within said first annular cavity and oriented such that rotation of said paddle within said lubricating oil is resisted by said plurality of blades imparting angular momentum to said lubricating oil;
- a second housing fixedly secured to said enclosure and defining a second annular cavity, said second housing having a curved exterior surface;
- and
- a plurality of vanes disposed within said second annular cavity and positioned to resist angular momentum imparted to said lubricating oil by said plurality of blades of said first housing when said first housing rotates within said lubricating oil;
- and
- (f) one-way drive means operatively connecting said drive shaft to said paddle, whereby undesirable rotation of said drive shaft in one direction causes said paddle to be driven by said drive shaft, said paddle resisting said undesirable rotation of said drive shaft by imparting angular momentum to said lubricating oil, said one-way drive means permitting free rotation of said drive shaft in the opposite direction.
9 more elements
Dependencies are inferred from the claim text.