Abstract: In a multi-blade centrifugal fan in which an impeller is provided in a scroll casing in a freely rotatable manner, the scroll casing is provided with an axially expanded portion that forms an air channel at a bottom surface thereof which is expanded in a rotation-axis direction at a radially outer side of an annular flange portion which supports the impeller; and is provided, in a region of an outlet between a tongue portion and a spiral-end portion of the scroll casing in the axially expanded portion, with a protrusion that protrudes radially outward from a radially inner side surface by a predetermined amount so as to directly face an airflow in a circumferential direction.

Abstract: A power line carrier communication apparatus which prevents leakage of an electromagnetic wave and stably operates while employing a simplified configuration is provided. The power line carrier communication apparatus may include a transmission circuit which is connected to a power line and which transmits a signal to the power line; a reception circuit which is connected to the power line and which receives the signal from the power line; and an output suppression circuit which is connected to the power line and which, by connecting a signal attenuating element between the transmission circuit and a common only when the transmission circuit transmits the signal, suppresses an output of the signal transmitted from the transmission circuit.

Abstract: Provided are a low-noise, high-performance multiblade centrifugal fan that suppresses interference between rotational flows generated within extension sections that are extended in a rotation-axis direction at upper and lower end surfaces of a scroll casing, and an air conditioner equipped with the same. In a multiblade centrifugal fan having an impeller disposed in a rotatable manner about a rotation shaft within a scroll casing having a flow path whose cross section gradually increases in a rotational direction, at least one of upper and lower end surfaces of the scroll casing serves as an inclined end surface that is extended in the extending direction of the rotation shaft such that an extended height thereof gradually increases in the rotational direction from a scroll start position, and a stepped section extending in the rotational direction is provided between the inclined end surface and an inner-peripheral side surface of an extension section.

Abstract: In an in-vehicle power line communication system in which a power line communication network and a battery are connected to each other via a first power line, the power line communication network includes a master power line communication node connected to the battery via the first power line, a second power line, slave power line communication nodes including at least a transmitting slave power line communication node and a receiving slave power line communication node, a transmitting-side in-vehicle device, and a receiving-side in-vehicle device. The master power line communication node and the slave power line communication nodes communicate with each other using a time-triggered communication protocol. The mutual communicating of the slave power line communication nodes are controlled by a token signal output from the master power line communication node. Only the master power line communication node and the slave power line communication nodes are connected to the second power line.

Abstract: In a multi-blade centrifugal fan including an impeller (7) rotatably disposed in a casing and composed of a disc-shaped hub (8), a plurality of blades (9), and an annular shroud (10), the blades (9) are curved in a concave shape on a pressure side in a cross-section perpendicular to a rotating shaft of the impeller (7) and have a curved shape that is backward-swept near a leading edge (9C) thereof and that is forward-swept near a trailing edge (9D) thereof, the inner diameter of the cascade of blades (9) increases gradually from the hub (8) toward the shroud (10), and the diameter of a maximum-curvature position (9B) where the curvature of the curved shape is maximized increases gradually from the hub (8) toward the shroud (10).

Abstract: A pinch detection device at an opening/closing section has a very simple structure that can surely detect a pinch without faulty operation in a vehicle whose power supply voltage greatly fluctuates. The pinch detection device includes a sensor for detecting displacement of an opening/closing section of a vehicle to be opened/closed by a motor, and a time counter for counting a relative time adjusted according to a fluctuation in a power supply voltage. The pinch detection device also has a pinch detector for detecting a pinch of a foreign matter at the opening/closing section according to a change in a relative speed obtained based on a change in the displacement on a basis of the relative time.

Abstract: A control device at an opening/closing section of a vehicle and a method for controlling the opening/closing section of the vehicle control a motor so that a pinch at the opening/closing section is determined accurately. The control device includes a pinch determination device that is mounted to the motor for opening/closing the opening/closing section of the vehicle and determines a pinch of a foreign object based on a change in the rotation number of the motor, and demagnetization pulse applying device for supplying power with reverse polarity to the motor in a pulse-like manner at the completion of the opening/closing.

Abstract: In a multi-blade centrifugal fan in which an impeller is provided in a scroll casing in a freely rotatable manner, the scroll casing is provided with an axially expanded portion that forms an air channel at a bottom surface thereof which is expanded in a rotation-axis direction at a radially outer side of an annular flange portion which supports the impeller; and is provided, in a region of an outlet between a tongue portion and a spiral-end portion of the scroll casing in the axially expanded portion, with a protrusion that protrudes radially outward from a radially inner side surface by a predetermined amount so as to directly face an airflow in a circumferential direction.

Abstract: An object is to provide a vehicle heat-exchange module that is capable of reducing abnormal sound generated by interference between rotor blades of a propeller fan and high-static-pressure regions generated at leading edges of stator blades, while decreasing the input power of a fan motor by providing the stator blades on the downstream side of the propeller fan. In a vehicle heat-exchange module including a fan motor that drives a propeller fan, the fan motor is supported to the fan shroud at a downstream side of the propeller fan via motor support struts formed into stator blades in a radiating pattern, and a distance between stator blades formed of the motor support struts and rotor blades of the propeller fan for a narrowest portion at the same position in the radial direction is at least 0.018D<L1, where D is the diameter of the rotor blades.

Abstract: In a multi-blade centrifugal fan in which an impeller is provided in a scroll casing in a freely rotatable manner, the scroll casing is provided with an axially expanded portion that forms an air channel at a bottom surface thereof which is expanded in a rotation-axis direction at a radially outer side of an annular flange portion which supports the impeller; and is provided, in a region of an outlet between a tongue portion and a spiral-end portion of the scroll casing in the axially expanded portion, with a protrusion that protrudes radially outward from a radially inner side surface by a predetermined amount so as to directly face an airflow in a circumferential direction.

Abstract: A gas-sensing element configured to measure a concentration of a specific component of a gas is mounted to a first circuit board which includes a driving circuit configured to drive the gas-sensing element. A moisture-proof material is disposed over at least one side of the first circuit board disposed in a tubular gas-sensing element case fixed to a sensor case. A gas-sensing chamber is defined by the first circuit board and an inner tubular surface of the gas-sensing element case, and opens at an open end of the gas-sensing element case to receive the gas to be monitored. A second circuit board which includes a control circuit configured to control the gas-sensing element via the driving circuit is fixed to a sensor case, and disposed in a position separate from the gas-sensing chamber such that the second circuit board is kept out of contact with the gas to be monitored.

Abstract: A power line carrier communication apparatus which prevents leakage of an electromagnetic wave and stably operates while employing a simplified configuration is provided. The power line carrier communication apparatus may include a transmission circuit which is connected to a power line and which transmits a signal to the power line; a reception circuit which is connected to the power line and which receives the signal from the power line; and an output suppression circuit which is connected to the power line and which, by connecting a signal attenuating element between the transmission circuit and a common only when the transmission circuit transmits the signal, suppresses an output of the signal transmitted from the transmission circuit.

Abstract: An automatic control system synchronizes and controls a control target while preventing unnecessary signal processing. The system includes a slave station that is connected to the control target, a master station that is connected to a control unit for controlling the control target, a contact point information collection and distribution device that collects and distributes a series of contact point information communicated at a predetermined communication cycle, and communication lines connecting between the master and slave stations via the contact point information collection and distribution device. The contact point information collection and distribution device collects and distributes the series of contact point information in synchronization with all the communication lines under the control of the control unit.

Abstract: The present invention provides a control device at an opening/closing section of a vehicle and a method for controlling the opening/closing section of the vehicle for controlling a motor so that pinch at the opening/closing section is determined accurately while its constitution is very simple. The control device includes a pinch determination device that is mounted to a motor for opening/closing an opening/closing section of a vehicle and determines pinch of a foreign matter based on a change in the rotation number of the motor, and demagnetization pulse applying means for supplying power with reverse polarity to motor in a pulse-like manner at completion of the opening/closing.

Abstract: An object is to provide a vehicle heat-exchange module capable of optimizing the whole of a stator blade that deflects a flow in the swirling direction produced by a cooling fan, thereby reducing the work performed by the cooling fan and eventually reducing the input power to the cooling fan, and to provide a vehicle having the vehicle heat-exchange module. According to the vehicle heat-exchange module (10), the stator blade (30) arranged on the downstream side of the cooling fan (16) is divided by an intermediate ring (31) into inner-circumference-side stator blade members (32A) and outer-circumference-side stator blade members (32B), and the number of the inner-circumference-side stator blade members (32A) for installation is made smaller than that of the outer-circumference-side stator blade members (32B), thus setting the pitch/chord ratio within an appropriate range at each of the inner circumference side and the outer circumference side.

Abstract: In a vehicle heat-exchange module in which a fan unit is provided at the downstream side of a rectangular heat exchanger, and the fan unit is provided with a shroud having a bell-mouth and an annular opening, a propeller fan that is disposed in the annular opening, and a fan motor that rotationally drives the propeller fan, the fan unit is a unit having a single-fan configuration in which motor input power is at a predetermined level or less, and the propeller fan is provided with two sets of winglets that are respectively constructed upright, with a prescribed gap therebetween in the radial direction, along the circumferential direction on both a pressure surface and a suction surface of the root side of the blades.

Abstract: The present invention provides a pinch detection device at an opening/closing section having a very simple structure that can surely detect pinch without a faulty operation also in a vehicle whose power supply voltage greatly fluctuates, a vehicle having this device, and a method for detecting pinch at an opening/closing section. This invention is a pinch detection device at an opening/closing section includes a sensor for detecting displacement of a opening/closing section of a vehicle to be opened/closed by a motor, a time counter for counting a relative time adjusted according to a fluctuation in a power supply voltage, and a pinch detector for detecting pinch of a foreign matter at the opening/closing section according to a change in a relative speed obtained based on a change in the displacement on a basis of the relative time.

Abstract: Provided are a low-noise, high-performance multiblade centrifugal fan that suppresses interference between rotational flows generated within extension sections that are extended in a rotation-axis direction at upper and lower end surfaces of a scroll casing, and an air conditioner equipped with the same. In a multiblade centrifugal fan having an impeller disposed in a rotatable manner about a rotation shaft within a scroll casing having a flow path whose cross section gradually increases in a rotational direction, at least one of upper and lower end surfaces of the scroll casing serves as an inclined end surface that is extended in the extending direction of the rotation shaft such that an extended height thereof gradually increases in the rotational direction from a scroll start position, and a stepped section extending in the rotational direction is provided between the inclined end surface and an inner-peripheral side surface of an extension section.

Abstract: In a multi-blade centrifugal fan including an impeller (7) rotatably disposed in a casing and composed of a disc-shaped hub (8), a plurality of blades (9), and an annular shroud (10), the blades (9) are curved in a concave shape on a pressure side in a cross-section perpendicular to a rotating shaft of the impeller (7) and have a curved shape that is backward-swept near a leading edge (9C) thereof and that is forward-swept near a trailing edge (9D) thereof, the inner diameter of the cascade of blades (9) increases gradually from the hub (8) toward the shroud (10), and the diameter of a maximum-curvature position (9B) where the curvature of the curved shape is maximized increases gradually from the hub (8) toward the shroud (10).

Abstract: In a multi-blade centrifugal fan in which an impeller is provided in a scroll casing in a freely rotatable manner, the scroll casing is provided with an axially expanded portion that forms an air channel at a bottom surface thereof which is expanded in a rotation-axis direction at a radially outer side of an annular flange portion which supports the impeller; and is provided, in a region of an outlet between a tongue portion and a spiral-end portion of the scroll casing in the axially expanded portion, with a protrusion that protrudes radially outward from a radially inner side surface by a predetermined amount so as to directly face an airflow in a circumferential direction.