What is a swash plate in a pump?
Swash plate pumps have a rotating cylinder containing pistons. A spring pushes the pistons against a stationary swash plate, which sits at an angle to the cylinder. The pistons suck in fluid during half a revolution and push fluid out during the other half.
Which pump is used the swash plate?
axial piston pump
The axial piston pump drives a series of pistons aligned parallel with a shaft through a swashplate to pump a fluid. A common example of a swashplate application in a fluid pump is the compressor of a present-day automobile air conditioning system.
What is the main purpose of using the swash plate design compressor?
The required amount of refrigerant gas is sucked in and compressed by changing the pressure balance within the compressor. The swash plate angle can be adjusted, which forces the piston to make larger or smaller strokes. This enables stable temperature control and improved driving feeling.
What controls the angle of the swash plate in a variable swash plate compressor?
The Variable Swashplate Compressor is an axial piston design, with the pistons driven by a wobble plate or a swash plate. The swashplate angle is controlled with linkage and springs, which are adjusted by changing the refrigerant pressure in the compressor housing.
Which type of motor has a swash plate?
hydraulic motor
In a hydraulic motor, a swash plate aids in transforming the axial reciprocating motion of the axial pistons into rotary motion. Basically, the axial pistons move up and down, sliding along the angled surface of the swash plate.
How are the Pistons in a swash plate pump?
My understanding of swash plates led me to believe that the pistons in a swash plate pump rotate around with the driving shaft along with the chambers in which they aspirate (e.g. M&S Hydraulic Youtube video on swash plate plumps ). As the axial position of the pistons change, the piston chambers draw and expel fluid.
Why does a swash plate pump have a stationary barrel?
The pump’s barrel must remain stationary because each piston chamber is connected directly to an outlet check valve. As they show at 1:30 in the video, the concept of a stationary barrel allows for separate flows from a specialized cover plate, which isolates 1 or more piston chambers from the others.
Which is the pivoting point of the swash plate?
The pivoting point, around which the swash plate swings, is the center of the pitch circle of the pistons spherical heads when the swash plate angle of inclination is zero. Fig. 1. Pumping mechanism of swash plate axial piston pump with conical cylinder block.
What causes swashplate to move from side to side?
Off-centeredness of a swashplate can occur from an assembly error or component wear. When the pump is working, the piston will produce force to the swashplate through the chuck. If the swashplate clearance increases, then the swashplate will move to that side.