BACKGROUND OF THE INVENTION
(a) Field of the Invention
[0001] The present invention is to use two or above two electromagnetic actuators generating
electromagnetic effect through electrical current excited coil, through the control
of switch device, for the control of two or above two excitation coils for parallel
actuation and then switch to series connection to maintain electrically actuated operation.
(b) Description of the Prior Art:
[0002] Conventionally using two or above two electromagnetic actuators generating electromagnetic
effect through electrical current excited coil, where each set of excitation coil
usually actuates and sustains electrically actuated operation is presenting parallel
state, where the excitation current required is larger is its drawback.
SUMMARY OF THE INVENTION
[0003] The present invention is a kind of switch device for the control of two or above
two electromagnetic actuators, for driving coil such as electromagnetic brake, electromagnetic
clutch, electromagnetic switch, electromagnetic relay, and electromagnetic valve,
etc. to perform parallel actuation, so as to generate better electromagnetic actuation
power, and through the control of switch device, take driving coil switch into serial
connection to reduce the electrical current of driving coil, but still maintain the
operation of electrical actuation in order to save electricity and reduce the heat
generated by the electromagnetic actuator.
[0004] As after serial connection of excitation coil it is still required to maintain the
electromagnetic actuator device presenting under the operation of electrical actuator,
therefore the electromagnetic actuation device applicable to the present invention
must have the characteristic of maintaining electrically actuating operation after
the excitation coil switched to serial connection state.
BRIEF DESCRIPTION OF THE DRAWINGS
[0005]
Fig. 1 is a circuit block chart of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED MBODIMENTS
[0006] The present excitation actuator parallel actuation serial sustaining driving circuit
is focusing at two or above two electromagnetic actuators with excitation coil, such
as electromagnetic brake, electromagnetic clutch, electromagnetic switch, electromagnetic
relay, or electromagnetic valve, etc., through the control of switch device, using
the excitation coil for parallel actuation and serial sustaining operation in order
to save electrical energy.
[0007] Two of the above electromagnetic actuator devices are used as preferred embodiment
and described below:
[0008] Fig. 1 illustrates the circuit block chart of the present invention, essentially
comprised of:
-- Switch device 101: mechanical or electrical switches, relay, electromagnetic switch
or solid state switch component, operated by human power, or mechanical power, or
fluid power, or electrical energy; using alternating or direct electrical current
energy to deliver to excitation coils 102' and 112' of at least two electromagnetic
actuators 102 and 112, or for cutting off electricity operation;
Said switch device can be used for the operation of switching, so that the excitation
coils of at least two electromagnetic actuators can be first to perform parallel actuation
and then switched to serial connection state, and during serial connection the electromagnetic
actuator still could maintain the operation of electrical actuation;
-- Electromagnetic actuators 102 and 112: consist of at least two electromagnetic
brakes, electromagnetic clutches, electromagnetic switches, electromagnetic relays,
and electromagnetic valves with AC or DC electrical power excitation coil, the electromagnetic
actuators has the basic characteristic of sustaining of electrical actuating operation
while the excitation coils 102' and 112' are in serial connection;
-- Capacitors 103 and 113: matched AC or DC capacitor or other storage and discharging
component based on the specification of electromagnetic actuator, for assistance of
excitation coils 102' and 112' of electromagnetic actuator in sustaining the stable
operation when switch device 101 is switching between series or parallel connection
to excitation coils 102' and 112'. Such capacitor can either be installed or not installed
based on the need.
[0009] The operation of the embodiment of Fig. 1 is described as below:
If VA is the normal minimum actuation voltage of the excitation coil of electromagnetic
actuators 102 and 112, VH is the holding voltage of normal minimum sustaining electrical
actuating characteristics for electromagnetic actuators 102 and 112. If taking the
two electromagnetic actuators 102 and 112 of the preferred embodiment in Fig. 1 installed
with the excitation coil of the same excitation actuator as example, the suitable
working conditions of the excitation coil of the electromagnetic actuator are: Minimum
actuation voltage VA of the excitation coil < 2 x minimum electromagnetic actuation
state holding voltage VH.
[0010] In the practical application, this electromagnetic actuator parallel actuation serial
sustaining driving circuit, the two or above two electromagnetic actuators installed
can be formed by the same or different electromagnetic actuators.
[0011] The previously stated capacitor connected to excitation coils 102' and 112' in parallel
when in use of DC electrical energy for driving excitation coils also can use flying
wheel diode for replacement of capacitors or mixed in use; when in use of AC electrical
energy for driving excitation coils, it is also possible to be replaced by the short
circuit conducting ring or short circuit shielded windings.
[0012] In summary, this electromagnetic actuator parallel actuation serial sustaining driving
circuit can use the excitation coil of the electromagnetic actuator for parallel state
actuation in order to obtain better actuation response characters and control to switch
excitation coil as serial connection so as to sustain electromagnetic actuation as
the operation of electrical actuation with energy savings as characteristics.
1. A kind of electromagnetic actuator parallel actuation serial sustaining driving circuit,
for the switch device controlling two or above two electromagnetic actuators, for
driving coils such as electromagnetic brake, electromagnetic clutch, electromagnetic
switch, electromagnetic relay, and electromagnetic valve, etc. to perform parallel
actuation in order to generate better electromagnetic actuation power, then through
the control of switch device the driving coil is switched into serial connection for
the reduction of electrical current in the driving coil but still maintain the operation
of electrical actuation in order to save electrical energy and reduce the heat generated
by the electromagnetic actuator; the major components include:
-- switch device (101): mechanical or electrical switches, relay, electromagnetic
switch or solid state switch component, operated by human power, or mechanical power,
or fluid power, or electrical energy; using alternating or direct electrical current
energy to deliver to excitation coils (102', 112') of at least two electromagnetic
actuations (102, 112), or for cutting off electricity operation;
Said switch device can be used for the operation of switching, so that the excitation
coils of at least two electromagnetic actuators can be first to perform parallel actuation
and then switched to serial connection state, and during serial connection the electromagnetic
actuator still could maintain the operation of electrical actuation;
-- electromagnetic actuators (102, 112): consist of at least two electromagnetic brakes,
electromagnetic clutches, electromagnetic switches, electromagnetic relays, and electromagnetic
valves with AC or DC electrical power excitation coil, the electromagnetic actuators
has the basic characteristic of sustaining of electrical actuating operation while
the excitation coils (102', 112') are in serial connection;
-- capacitors (103, 113): matched AC or DC capacitor or other storage and discharging
component based on the specification of electromagnetic actuator, for assistance of
excitation coils (102', 112') of electromagnetic actuator (102, 112) in sustaining
the stable operation when switch device (101) is switching between series or parallel
connection to excitation coils; such capacitor can either be installed or not installed
based on the need.
2. The electromagnetic actuator parallel actuation serial sustaining driving circuit
as claimed in Claim 1, wherein the two or above two electromagnetic actuators installed
can be formed by the same or different electromagnetic actuators.
3. The electromagnetic actuator parallel actuation serial sustaining driving circuit
as claimed in Claim 1, wherein the capacitor connected in parallel with excitation
coils (102', 112') when using direct electrical current energy for driving excitation
coils also can use flying wheel diode to replace capacitor or use in mixture; in using
alternating electrical current energy for driving excitation coils also can use short
circuit conducting ring or short circuit shielded winding as replacement.
4. An electromagnetic parallel actuation/serial sustaining drive circuit comprising a
switch device (101) for controlling electric current delivery to the excitation coils
(102', 112') of at least two electromagnetic actuators (102, 112) so that the excitation
coils can perform parallel actuation and then be switched to serial connection, and
capacitors (103, 113) for assisting the excitation coils to sustain stable operation
when the switch device switches between serial and parallel connection to the excitation
coils.
5. An electromagnetic parallel actuation/serial sustaining drive circuit comprising a
switch device (101) for controlling electric current delivery to the excitation coils
(102', 112') of at least two electromagnetic actuators (102, 112) so that the excitation
coils can perform parallel actuation and then be switched to serial connection, and
means for assisting the excitation coils to sustain stable operation when the switch
device switches between serial and parallel connection to the excitation coils.