VALVE PLATE WITH MODIFIED SUCTION HOLES TO INCREASE REFRIGERANT FLOW FOR COMPRESSOR

Abstract

The modification of the suction holes of the valve plate would increase the refrigerant flow rate of the compressor. The modified suction holes (11 and 12) are specially designed to have tapering form with the larger diameter at the top and smaller at the bottom (20). The valve plate partition (16) has the same height as the valve plate. These will reduce the friction loss of the refrigerant in the cylinder, which will result in an improvement of the refrigerant flow rate, more suction pressure, and the higher coefficient discharge.

Claims

1. A valve plate having suction holes to increase refrigerant flow rate comprising: a. a cylinder and piston operated by an electrical that draws refrigerant from an inlet and compress the refrigerant out an exit hole thereby increasing pressure and liquefying the refrigerant, said refrigerant being processed through suction and discharge holes on the valve plate (10) attached to the end of the cylinder; whereby, b. valve plate (10) is composed of a first suction hole (11) and a second suction hole (12), both of which are disposed about the tip of the cylinder and characterized by a standard cylindrical hole shape which is composed of an arc (14) and a linear plane (15) whereby said linear planes of both holes are positioned in parallel and divided by a valve plate partition; and whereby, c. the first and the second holes, have a larger diameter at the top (13) and smaller at the bottom (21), in a tapering slope (20).

2. The valve plate according to claim 1, whereby, the first (11) and second (12) suction holes are tapered to form semi-circular chambers (20) whereby the line from the larger edge (13) to the inner smaller edge (21) of the suction hole is angulated to the horizontal center plane.

3. The valve plate according to claim 2, whereby, the line from the larger edge (13) to the inner smaller edge (21) of the suction hole is angulated to the horizontal plane less than 90 degree (23).

4. The valve plate according to claim 1, whereby, the valve plate partition (16) has a height that is the same as the suction valve plate (10).

5. The valve plate according to claim 1, whereby, the semi-circular chamber (20) of the valve plate (10) has the tapering slope to the bottom of the valve plate (10) assembled to the opening of the suction pipe (18).

6. The valve plate according to claim 1, whereby, the first (11) and second (12) suction holes have higher coefficient of discharge than the original model by 4.37%.

Description

BRIEF DESCRIPTION OF FIGURES

[0018] FIG. 1 and FIG. 2 show the schematic view of the valve plate after modified to increase refrigerant flow rate of the compressor.

[0019] FIG. 3 and FIG. 4 show the cross-section view of the modified valve plate (10)

[0020] FIG. 5 shows the assembly of the valve plate (10) with the suction pipe (18) of the closed loop compressor.

[0021] FIG. 6 shows the simulation of the refrigerant flow

[0022] FIG. 7 shows a graph result of a study by the Department of Aerospace Engineering, Faculty of Engineering, Kasetsart University, Thailand. This comparison demonstrates the lower turbulent energy of the improved model compared to the original model.

[0023] FIG. 8 shows a table result of a study by the Department of Aerospace Engineering, Faculty of Engineering, Kasetsart University, Thailand. This comparison demonstrates that the improved model has more efficient to the original model.

BEST INVENTION METHODOLOGY

[0024] See narrative details in Complete Invention Description section.