Abstract: A fluid sending apparatus includes a signal generator that generates a signal including a signal component that has a one-sided waveform and is composed of a rising component in a positive voltage direction, a falling component in the positive voltage direction, and a vortex ring formation time component T, and a damping component for driving for a predetermined time with a voltage less than or equal to one-half of a voltage in the positive voltage direction, the waveform of each of the signal component and the damping component corresponding to a single wave.

Abstract: A deodorizer includes: a body case having an inlet and an outlet opening outward and having an air duct that provides communication between the inlet and the outlet; a blowing fan included in the body case, for introducing indoor air into the air duct extending from the inlet to the outlet; deodorizing means provided in a middle of the air duct, through which the introduced air can pass; heating means placed to face at least a partial region of the deodorizing means, for heating the deodorizing means at 200° C. or less; and a controller for controlling operations of the blowing fan and the heating means. The deodorizing means includes, on a carrier, an adsorbent that does not oxidatively decompose an adsorbed material, a catalyst component that oxidatively decomposes the adsorbed material, and a rate of conversion of alcohol into acetic acid by the catalyst component is 15% or less on average across the entire deodorizing means.

Abstract: A fluid sending apparatus includes a signal generator that generates a signal including a signal component that has a one-sided waveform and is composed of a rising component in a positive voltage direction, a falling component in the positive voltage direction, and a vortex ring formation time component T, and a damping component for driving for a predetermined time with a voltage less than or equal to one-half of a voltage in the positive voltage direction, the waveform of each of the signal component and the damping component corresponding to a single wave.

Abstract: A fluid sending apparatus includes a signal generator that generates a signal including a signal component that has a one-sided waveform and is composed of a rising component in a positive voltage direction, a falling component in the positive voltage direction, and a vortex ring formation time component T, and a damping component for driving for a predetermined time with a voltage less than or equal to one-half of a voltage in the positive voltage direction, the waveform of each of the signal component and the damping component corresponding to a single wave.

Abstract: A deodorizer includes: a body case having an inlet and an outlet opening outward and having an air duct that provides communication between the inlet and the outlet; a blowing fan included in the body case, for introducing indoor air into the air duct extending from the inlet to the outlet; deodorizing means provided in a middle of the air duct, through which the introduced air can pass; heating means placed to face at least a partial region of the deodorizing means, for heating the deodorizing means at 200° C. or less; and a controller for controlling operations of the blowing fan and the heating means. The deodorizing means includes, on a carrier, an adsorbent that does not oxidatively decompose an adsorbed material, a catalyst component that oxidatively decomposes the adsorbed material, and a rate of conversion of alcohol into acetic acid by the catalyst component is 15% or less on average across the entire deodorizing means.

Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.

Abstract: There is provided a suction tool for a vacuum cleaner that can easily remove dust entangled around a rotating brush with a small force in a sanitary manner with clean hands without spreading dust. The suction tool includes dust removing means 39 for removing dust adhering to a rotating brush 30, the dust removing means 39 includes a first remover that has substantially the same shape as a trough 34 between cleaning bodies 33 or between cleaning body holding portions 32 of the rotating brush 30, and is guided in an axial direction of the rotating brush 30 within the trough 34.

Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.

Abstract: A vacuum cleaner including a suction port body, a motor-driven blower, and a cyclone part that is disposed between the suction port body and the motor-driven blower and is provided with an inflow port, a swirl chamber, and a discharge port body. The side surface of the discharge port body is composed of a cylindrical mesh and a conical mesh. The side wall of the swirl chamber is composed of a cylindrical part and a conical part. The vacuum cleaner further includes a zero-order opening formed by opening a part of the cylindrical part, a first-order opening formed by opening a part of the conical part, a zero-order dust case communicating with the swirl chamber via the zero-order opening, and a first-order dust case communicating with the swirl chamber via the first-order opening.

Abstract: A fluid sending apparatus includes a signal generator that generates a signal including a signal component that has a one-sided waveform and is composed of a rising component in a positive voltage direction, a falling component in the positive voltage direction, and a vortex ring formation time component T, and a damping component for driving for a predetermined time with a voltage less than or equal to one-half of a voltage in the positive voltage direction, the waveform of each of the signal component and the damping component corresponding to a single wave.

Abstract: There is provided a suction tool for a vacuum cleaner that can easily remove dust entangled around a rotating brush with a small force in a sanitary manner with clean hands without spreading dust. The suction tool includes dust removing means 39 for removing dust adhering to a rotating brush 30, the dust removing means 39 includes a first remover that has substantially the same shape as a trough 34 between cleaning bodies 33 or between cleaning body holding portions 32 of the rotating brush 30, and is guided in an axial direction of the rotating brush 30 within the trough 34.

Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.

Abstract: A vacuum cleaner including a suction port body, a motor-driven blower, and a cyclone part that is disposed between the suction port body and the motor-driven blower and is provided with an inflow port, a swirl chamber, and a discharge port body. The side surface of the discharge port body is composed of a cylindrical mesh and a conical mesh. The side wall of the swirl chamber is composed of a cylindrical part and a conical part. The vacuum cleaner further includes a zero-order opening formed by opening a part of the cylindrical part, a first-order opening formed by opening a part of the conical part, a zero-order dust case communicating with the swirl chamber via the zero-order opening, and a first-order dust case communicating with the swirl chamber via the first-order opening.

Abstract: A polarization dispersion compensation apparatus includes a polarization controller, a polarization beam splitter, an optical delay circuit, and a polarization beam combiner. The polarization controller controls polarization of an optical signal so that the polarization axis of the input optical signal substantially coincides with the optical axis of an optical transmission line, and the polarization beam splitter section splits the optical signal into two polarized components perpendicular to each other. The optical delay circuit section causes a difference in delay between the two polarized components, and the polarization beam combiner section combines the two polarized components output from the optical delay circuit section.

Abstract: A variable dispersion compensator includes an optical waveguide, a temperature controller. The optical waveguide has a chirped grating having a Bragg wavelength changing along the longitudinal direction of the grating. A temperature distribution T1(x) is applied to a central portion of the grating, defined as a region where a distance x from an end of the grating is a range of 20 % to 80 % of total length of the grating. Temperature distribution T2(x) and T3(x) are applied to end portions of the grating, defined as two regions extending from respective ends of the grating to the central region, respectively. At least one of T2(x) and T3(x) has a distance dependence different from that of the T1(x).

Abstract: In a polarization mode dispersion compensating apparatus for controlling polarization mode dispersion of an optical signal, a first optical monitor detects and outputs, based on an optical signal outputted from a first optical transmission line having a grating, a first detection signal indicating magnitude of waveform distortion of the first optical transmission line, and a second optical monitor detects and outputs, based on an optical signal output from a second optical transmission line having a grating, a second detection signal indicating magnitude of waveform distortion of the second optical transmission line. A calculator circuit calculates from the first and second detection signals an output signal. A controller controls a polarization controller based on the output signal from the calculator circuit.

Abstract: A polarization dispersion compensation apparatus of the present invention is provided with a polarization controller 4, a polarization beam splitter section 1, an optical delay circuit section 2 and a polarization beam combiner section 3. The polarization controller 4 controls polarization state of an optical signal so that the polarization axis of the inputted optical signal substantially coincides with the optical axis of an optical transmission line, and the polarization beam splitter section 1 splits, and outputs the optical signals of two polarized components perpendicular to each other from the optical signal outputted from the polarization controller 4. The optical delay circuit section 2 causes a difference in delay between the optical signals of the two polarized components outputted from the polarization beam splitter section 1, and the polarization beam combiner section 3 combines and outputs the optical signals of the two polarized components outputted from the optical delay circuit section 2.

Abstract: A method of manufacturing a grating in an optical waveguide that includes a core and a cladding covering the core. The method includes scanning a laser beam along an optical axis of the optical waveguide to modulate the refractive index of the core. The core is made of a material having a refractive index that is changeable upon irradiation by radiation. In addition, in scanning the core, the irradiation range of the laser beam is controlled and the core is scanned several times. Therefore, a predetermined distribution of irradiation is obtained in a direction of the optical axis of the grating.

Abstract: A variable dispersion compensator (1) includes an optical waveguide (8), a temperature controller (3, 5, 6, 7). The optical waveguide has a chirped grating (2) having Bragg wavelength changed along the longitudinal direction. Temperature distribution based on T1(x) is applied to a central portion defined as a region where a distance x from an end of the grating is a range of 20% to 80% of total length of the grating. Temperature distribution based on T2(x) and T3(x) are applied to both end portions defined as two regions extending from both ends of the grating to the central region, respectively. At least one of the T2(x) and T3(x) has distance dependence different from that of the T1(x).

Abstract: A temperature control device for controlling temperature variable devices disposed near a grating of a variable dispersion equalizer including an optical waveguide having the grating. The temperature variable devices control temperatures independently of each other. The temperature control device includes a controller for controlling the temperature variable units, and a storage device which stores temperature control patterns including combinations of control signals for the respective temperature variable units. The controller controls the temperature variable devices with a control signal of at least one of the temperature control patterns selected from the storage device.