Abstract: A centrifugal fan allows good or inferior condition of soldering on the back surface of a circuit board to be visually inspected, includes a secondary casing 130, the secondary casing 130 including a connector housing 190 having opening portion 191 at a lateral side thereof and a connector pin 192 embedded thereinside, wherein one end of the connector pin 192 protrudes inside of the connector housing 190, and the other end of the connector pin 192 penetrates the circuit board 135 and is soldered to the circuit board 135, thereby forming solder fillets 195a and 195b between the front and back surfaces of the circuit board 135 and the connector pin 192, a gap 139 is arranged between the secondary casing 130 and the part of the circuit board 135 where connector pin 192 penetrates, a through hole for visual inspection is arranged in a bottom wall portion of the secondary casing so as to see the fillet formed between the back surface of the circuit board and the connector pin.

Abstract: A centrifugal fan allows good or inferior condition of soldering on the back surface of a circuit board to be visually inspected, includes a secondary casing 130, the secondary casing 130 including a connector housing 190 having opening portion 191 at a lateral side thereof and a connector pin 192 embedded thereinside, wherein one end of the connector pin 192 protrudes inside of the connector housing 190, and the other end of the connector pin 192 protrudes from a bottom surface of the secondary casing 130, penetrates the circuit board 135 and is soldered to the circuit board 135, thereby forming solder fillets 195a and 195b at a corner part of the front and back surfaces of the circuit board 135 and the connector pin 192, a gap 139 is arranged between the secondary casing 130 and the part of the circuit board 135 where connector pin 192 penetrates, the solder fillet formed between the back surface of the circuit board and the connector pin is located in the gap, and the solder fillet 195b of the connector pi

Abstract: A centrifugal fan that is light in weight and has a structure that restrains vibration are provided. The centrifugal fan includes a resin upper casing, a resin lower casing, an impeller, a motor, and a circuit board. The impeller, the motor and the circuit board are housed between the resin upper casing and the resin lower casing. Radial ribs and a concentric ribs for reinforcing are formed at a bottom surface of a concave part of the lower casing. Resin pins are provided in a standing manner at these rib parts, and the circuit board is fixed to the lower casing by the resin pins.

Abstract: An air conditioning device is provided. The air conditioning device comprises a fan and is provided on an underside of a seating surface of a vehicle seat. The fan comprises a case module and a restrictor. The case module comprises a first case and a second case. The first case is located at a side of the fan where the seating surface is located. The second case is located at a side of the fan opposite to the seating surface and is assembled to the first case. The restrictor is configured to restrict assembling of the first case and the second case to each other when an orientation of the second case with respect to the first case is different from a specified orientation.

Abstract: A vehicle seat air-blowing apparatus including an air blower including an impeller configured to generate air flow and an air blower opening configured to allow the air flow to flow in a ventilation passage of a seat pad of a vehicle seat, and a cover provided to the air blower opening and including a cover ventilation opening configured to allow the air flow to flow therethrough and a protection part configured to suppress application of a load to the air blower opening, wherein the vehicle seat air-blowing apparatus is configured to be attachable to the vehicle seat along the seat pad at a position where an opening of the ventilation passage provided in a rear surface of the seat pad and the cover ventilation opening of the cover face each other.

Abstract: A vehicle seat is provided. The vehicle seat comprises a seat body, a fan, a duct, a mounting bracket, and a holder. The fan blows air out or draws air in. The duct couples between the seat body and the fan, and is flexible. The mounting bracket is to be mounted to a panel provided in the seat body and supports the duct. The holder is provided in at least a first one of the duct and the mounting bracket. The holder is configured to be abutted against a second one of the duct and the mounting bracket in a state where the mounting bracket is not mounted to the panel, thereby holding a mounting surface of the mounting bracket and a mounting surface of the panel such that the mounting surface of the mounting bracket and the mounting surface of the panel are approximately parallel to each other.

Abstract: A valve device for a cooling water system of a motor vehicle, with a housing including a first connection and a second connection for a first liquid circuit, and a third connection and a fourth connection for a second liquid circuit, wherein the first connection is permanently fluidically connected to the second connection, and with a valve unit including a movably mounted valve element with which a thermally activatable spring element is associated, and which opens a connection between the third connection and the fourth connection in a first end position and cuts off the connection in a second end position. The thermally activatable spring element is arranged in a chamber located between the first connection and the second connection, which is permanently cut off from the third and the fourth connection and which preloads the valve element in the direction of the second end position.

Abstract: A vehicle seat air-blowing apparatus including an air blower including an impeller configured to generate air flow and an air blower opening configured to allow the air flow to flow in a ventilation passage of a seat pad of a vehicle seat, and a cover provided to the air blower opening and including a cover ventilation opening configured to allow the air flow to flow therethrough and a protection part configured to suppress application of a load to the air blower opening, wherein the vehicle seat air-blowing apparatus is configured to be attachable to the vehicle seat along the seat pad at a position where an opening of the ventilation passage provided in a rear surface of the seat pad and the cover ventilation opening of the cover face each other.

Abstract: A vehicle seat is provided. The vehicle seat comprises a seat body, a fan, a duct, a mounting bracket, and a holder. The fan blows air out or draws air in. The duct couples between the seat body and the fan, and is flexible. The mounting bracket is to be mounted to a panel provided in the seat body and supports the duct. The holder is provided in at least a first one of the duct and the mounting bracket. The holder is configured to be abutted against a second one of the duct and the mounting bracket in a state where the mounting bracket is not mounted to the panel, thereby holding a mounting surface of the mounting bracket and a mounting surface of the panel such that the mounting surface of the mounting bracket and the mounting surface of the panel are approximately parallel to each other.

Abstract: An air conditioning device is provided. The air conditioning device comprises a fan and is provided on an underside of a seating surface of a vehicle seat. The fan comprises a case module and a restrictor. The case module comprises a first case and a second case. The first case is located at a side of the fan where the seating surface is located. The second case is located at a side of the fan opposite to the seating surface and is assembled to the first case. The restrictor is configured to restrict assembling of the first case and the second case to each other when an orientation of the second case with respect to the first case is different from a specified orientation.

Abstract: A centrifugal fan includes: an impeller; an upper casing that is disposed above the impeller; a lower casing that is disposed below the impeller; an outlet port that is provided between the upper casing and the lower casing and from which an air suctioned by rotation of the impeller is discharged, wherein the upper casing is provided with a flange that protrudes in an outer radial direction of the impeller from an outer circumferential edge of the upper casing, and wherein the flange partially covers the outlet port when viewed from a direction perpendicular to a rotation axis of the impeller.

Abstract: A blowing control apparatus for a seat, that includes a blower, and an air hole that is provided in a seating surface and through which air blown from the blower passes, also includes a measuring portion that measures a rotation speed or a current value of the blower as a blower measurement value, and a control portion that determines a degree to which the air hole is obstructed according to the blower measurement value measured by the measuring portion, and controls rotation of the blower by a driving voltage of the blower based on the degree.

Abstract: A centrifugal fan includes: an impeller; an upper casing that is disposed above the impeller; a lower casing that is disposed below the impeller; an outlet port that is provided between the upper casing and the lower casing and from which an air suctioned by rotation of the impeller is discharged, wherein the upper casing is provided with a flange that protrudes in an outer radial direction of the impeller from an outer circumferential edge of the upper casing, and wherein the flange partially covers the outlet port when viewed from a direction perpendicular to a rotation axis of the impeller.

Abstract: An electrode is mounted in a vertical manner in an electrolytic liquid in an electrolytic cell. A harmful gas collecting hood is disposed within the electrolytic cell to cover the entire upper portion of the electrode. One end of a bottom surface of the hood lies at a higher location than the other end of the bottom surface of the hood. An inlet of a harmful gas treating pipe line is disposed in the vicinity of that portion of the bottom surface of the hood which lies at the higher location thereof. A harmful gas generated around the electrode is smoothly guided to the inlet by a guide effect of the hood and sucked into the inlet.

Abstract: An electrolytic test machine includes an electrolytic cell in which an electrolytic liquid is stored so that a test material is immersed in the electrolytic liquid. An electrode is immersed in the electrolytic liquid. A DC power source supplies a current between the test material and the electrode. A treating pipe line extends from the electrolytic cell to collect a harmful gas which is generated from the electrolytic liquid during supplying of a current and which is released out of the electrolytic liquid, along with the electrolytic liquid. A harmful gas purifying device is disposed in the treating pipe line. The harmful gas purifying device includes a catalyst for purifying the harmful gas, and a determining device for determining the replacement time of the catalyst.

Abstract: An external magnetizing method and external magnetizing apparatus for a rotary electric apparatus having internal permanent magnets, which obtains permanent magnetization of metal pieces fixed along the internal circumference of a yoke from the outside of the yoke while the rotor is situated within the yoke. The external magnetizing method includes the steps of creating the permanent magnets by applying a voltage from a capacitor power source to a yoke magnetizing device adjacent the external circumference of the motor yoke, then incrementally rotating the rotor in its normal rotating direction and thereafter reapplying the capacitor power source voltage to the yoke magnetizing means to again magnetize the metal pieces to obtain a more uniform magnetization when using a capacitor power supply .