摘要:
A process and apparatus for rapidly producing an emulsion and microcapsules in a simple manner is provided wherein a dispersion phase is ejected from a dispersion phase-feeding port toward a continuous phase flowing in a microchannel in such a manner that flows of the dispersion phase and the continuous phase cross each other, thereby obtaining microdroplets, formed by the shear force of the continuous phase, having a size smaller than the width of the channel for feeding the dispersion phase.
摘要:
A method and an apparatus for producing various types of microdroplets. The apparatus has a cross intersection portion at which a first continuous phase, a first dispersion phase, and a second dispersion phase intersect with each other. A first liquid feed device controls the first dispersion phase and a second liquid feed device controls the second dispersion phase. A control device is connected to the first liquid feed device and the second liquid feed device. The first liquid feed device and the second liquid feed device are controlled by a signal from the control device so that microdroplets formed of the first dispersion phase and microdroplets formed of the second dispersion phase are sequentially produced.
摘要:
A process and apparatus for rapidly producing an emulsion and microcapsules in a simple manner is provided wherein a dispersion phase is ejected from a dispersion phase-feeding port toward a continuous phase flowing in a microchannel in such a manner that flows of the dispersion phase and the continuous phase cross each other, thereby obtaining microdroplets, formed by the shear force of the continuous phase, having a size smaller than the width of the channel for feeding the dispersion phase.
摘要:
To make it possible to provide high quality heating or warming with low environmental pollution for a low environmental pollution vehicle such as an electric vehicle or a hybrid vehicle, an automotive air-conditioning apparatus has a hot water circuit that includes a hot water heater (heat source unit), a hot water circulating pump and a heater core to thereby perform a heating operation for heating passenger compartment air wherein, an electric motor is excited under the condition that the rotation thereof is fixed to thereby generate heat in the electric motor. The generated heat is utilized as a heat source for the hot water heater. The restricting mechanism may include two electric motors which are rotated in opposite directions to each other or a lock mechanism. Also, a cooling operation for cooling the passenger compartment air may be performed by driving the compressor (heat source unit) with the electric motors, a dehumidifying operation may be performed by simultaneously effecting the heating and cooling operations, or a heat pump type heating operation may be performed by having the refrigerant circuit acting reversibly.
摘要:
A ferromagnetic member (21) of a movable part (2) is disposed on a side of a stationary part (1) such that the ferromagnetic member (21) faces a high temperature superconductor (11) of the stationary part (1). The high temperature superconductor (11) is brought into a superconductive state by cooling it to a temperature below a critical temperature in a magnetic field. The magnetic flux pinned to the high temperature superconductor (11) is caused to pass through the ferromagnetic member (21) so that an attractive force is generated between the high temperature superconductor (11) and the ferromagnetic member (21) to hold the movable part (2). When the ferromagnetic member (21) has a shape such that when the gap becomes lower than a predetermined value, the attractive force decreases, the movable part (2) can be stably suspended in a non-contacting manner, without the necessity of control, by the combination of the high temperature superconductor (11) and the ferromagnetic member (21).
摘要:
An electrostatic levitating electrode (10) is split into four equal segments on a circular insulating substrate (4) with isolating strips (11a, 11b) interposed between them. A positive voltage and a negative voltage are alternately applied to these four electrodes (10a, 10b, 10c, 10d), which are sector-shaped. In order to prevent the concentration of electric charge in such case, the corner portions of the sector-shaped electrodes (10a, 10b, 10c, 10d) are formed to have roundness (13). Furthermore, a lead wire (12a) is connected to the outer side of the sector-shaped electrode (10a), a lead wire (12b) is connected to the outer side of the sector-shaped electrode (10b), a lead wire (12c) is connected to the outer side of sector-shaped electrode (10c), and a lead wire (12d) is connected to the outer side of sector-shaped electrode (10d). Accordingly, the maximum attraction force and levitational rigidity are increased without damage to electrodes at lead portions and it possible to convey a levitated body with accuracy.
摘要:
An electrostatic actuator comprising:a first member (1) having a plurality of belt-like electrodes (4) insulated from one another and disposed in a predetermined direction with predetermined gaps between them;a second member (10) constituted by a resistance body on the opposed surface thereof coming into contact with the surface of the first member (1); andcontrol means (11) capable of changing an impressed voltage to be applied to each of a plurality of belt-like electrodes disposed on the first member;the control means (11) being constituted so as to move the first and second members relative to each other by applying a predetermined voltage pattern consisting of a pulse voltage to the belt-like electrodes. The resistance body of the second member is selected so that the value of the time constant, which is primarily determined by a volume resistivity and dielectric constant of the material constituting the resistance body, becomes twice the time necessary for at least one of the first and second members to move relative to the other by a distance corresponding to the length between the electrodes.
摘要:
A microdrive apparatus of a micromanipulator according to the present invention is such that a piezoelectric/electrostrictive element having an inertial member mounted at its tip is attached to a moving member supported on a frictional surface of a support member, and a miniature instrument for manipulation is attached to the moving member. By applying an electric field to the piezoelectric/electrostrictive element, the miniature instrument for manipulation is controlled for fine movement by utilizing this kinetic energy, the inertial effect of the inertial member, and the reaction force acting upon the moving member. In addition, the miniature instrument for manipulation can be controlled to assume a predetermined position and predetermined attitude by a micropositioning device having an articulated portion in which an inertial member is attached to an arm via a piezoelectric/electrostrictive element.
摘要:
An apparatus for effecting a fine movement of an object for making use of impact produced by a piezoelectric/electrostrictive element having a moving member, a piezoelectric/electrostrictive element attached to said moving member, means for driving the piezoelectric/electrostrictive element, and an inertia member operative in response to the driving of the piezoelectric/electrostrictive element so as to impart an impact to the moving member. As an electric field is applied to the piezoelectric/electrostrictive element, a strain is caused by a stress which acts to expand or contract the piezoelectric/electrostrictive element to a length determined by the level of the electric field. By making use of this phenomenon, impact is produced by the inertia member which operates in response to the stress, thereby effecting a step-like fine movement of the moving member. Thus, the inertia member is impactingly driven by elongation or contraction of the piezoelectric/electrostrictive element so that a reactional force overcomes the friction acting between the moving member and a base so as to realize a fine movement of the moving member.
摘要:
A precision automatic assembly apparatus for inserting an insertable part into a hole formed in a member includes a movable hand incorporating a movable body to which the insertable part is attached, and an electromagnetic wrist mechanism having a plurality of electromagnets for supporting the movable body and controlling the movable body along a plurality of axes. When the part is inserted into the hole formed in the member, an external force which acts upon the part and the position of a point at which the part contacts the member are estimated by a control unit via position sensing means incorporated in the hand. Currents supplied to the excitation coils of the electromagnetic devices are controlled on the basis of the estimate to adjust the state (position and attitude) of the insertable part, whereby the part is fitted into the hole smoothly and automatically.