Low pulsation pump device
First Claim
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1. A low pulsation pump device comprising:
- a pulse motor;
at least one plunger adapted to be driven by said pulse motor;
a pressure detector disposed on the output side of said plunger;
memory means for storing values of pressures detected by said pressure detector during each of a number of periods; and
pulse control means for creating, in each period, a high speed region during which the rotational speed of said pulse motor is increased, said pulse control means having an optimization function which determines, on the basis of pressure information which was obtained during the last period, the location of a high speed region in each period in such a manner as to reduce pulsations.
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Abstract
A low pulsation pump device has a pulse motor, two plungers adapted to be driven by the pulse motor, a pressure sensor disposed on the output side of the plungers, a storage for storing values of pressures detected by the pressure sensor during each of a number of periods, a high speed region during which the rotational speed of the pulse motor is increased. The pulse control has an optimization function which determines, on the basis of pressure information which was obtained during the last period, the location of a high speed region in each period in such a manner as to reduce pulsations.
72 Citations
15 Claims
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1. A low pulsation pump device comprising:
- a pulse motor;
at least one plunger adapted to be driven by said pulse motor;
a pressure detector disposed on the output side of said plunger;
memory means for storing values of pressures detected by said pressure detector during each of a number of periods; and
pulse control means for creating, in each period, a high speed region during which the rotational speed of said pulse motor is increased, said pulse control means having an optimization function which determines, on the basis of pressure information which was obtained during the last period, the location of a high speed region in each period in such a manner as to reduce pulsations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a pulse motor;
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9. A low pulsation pump device comprising:
- a pulse motor;
at least one plunger adapted to be driven by said pulse motor;
a pressure detector disposed on the output side of said plunger;
memory means for storing values of pressures detected by said pressure detector during each of a number of periods; and
pulse control means for creating, in each period, a high speed region during which the rotational speed of said pulse motor is increased, said pulse control means having an optimization function which determines, on the basis of pressure information which was obtained during the last period, the location of starting and/or end points of a high speed region in each period in such a manner as to reduce pulsations. - View Dependent Claims (10, 11, 12, 13, 14, 15)
- a pulse motor;
Specification