Page 289 - 08-气源处理元件

VBA Series

Working Principle

Existing model Low Air Consumption Booster Regulator The existing model has two pistons and four
chambers.
The inlet pressure enters two chambers and pushes
Inlet pressure Inlet pressure Driven by reusing the pistons in the direction of the arrows q and
the exhaust air
outputs compressed air as outlet pressure.
Simultaneously, the air in w is exhausted when
finished pushing the piston.
e The low air consumption booster regulator has three
w w
q pistons and six chambers.
q The inlet pressure enters two chambers and pushes
the pistons in the direction of the arrows q.
Simultaneously, the exhaust air w that was used to
push the pistons in the previous process is
Outlet pressure wExhaust air Exhaust air Outlet pressure introduced into the next chamber, where it pushes
the next piston in the direction of the arrows e. The
reused air is then exhausted in the next process.
Exhausts all air used 40% reduction The existing model exhausted all air that pushes the
for the operation in exhaust air pistons. However, the low air consumption booster
regulator recycles air to operate the pistons, which
reduces 40% of the exhaust air volume.
Circuit Example

¡When only some of the machines in the factory require high-pressure ¡When the actuator output is insufficient, but space limitations
air, booster regulators can be installed for only the machines that prohibit switching to a larger cylinder diameter, a booster
require it. This allows the overall system to use low-pressure air while regulator can be used to increase the pressure. This makes it
accommodating machines requiring high-pressure air. possible to boost the output without replacing the actuator.
General line (low pressure) Locations requiring high pressure ¡When a certain level of output is required, but the cylinder size
must be kept small so that the driver remains compact, a
VBA booster regulator can be used to attain the required amount of
Factory line (source pressure) VBA (2-stage pressure boost) ø100 ø80
output.
VBA

VBA

0.5 MPa OUT 0.8 MPa
IN 0.5 MPa
* When using 2 booster regulators for 2-stage pressure boost, be sure to supply Operating pressure: Operating pressure:
sufficient flow to each booster regulator in order to stabilize the booster regulator 0.5 MPa Equivalent 0.8 MPa
inlet pressure. Refer to “Selection 2”. on page 11 for the inlet side supply amount. Bore size: ø100 output Bore size: ø80
Output ≈ 3850 N Output ≈ 4000 N
¡When charging a tank or the like from a source at atmospheric pressure,
a circuit with a check valve can be used to reduce the charge time by ¡When only one side of the cylinder is used for work, booster
allowing air to pass through the check valve up to the inlet pressure. regulators can be installed only on the lines that require them
to reduce the overall air consumption volume.

P1
P2

Initially, inlet pressure (P1) passes through the check valve, fills
P2, and results in P1 = P2. Shortening time

Outlet pressure [MPa] P2 Without check

P1

valve bypass

0 Time t (S)
7