The application discloses a multipurpose transfer pump free of secondary water filling, which comprises a cover plate, a water filling plug, a pump body, an impeller, a pump body flange and a motor, the pump body flange is provided at an end portion of the motor, the pump body is provided on a front surface of the pump body flange, a volute chamber corresponding to the impeller is provided in a back surface of the pump body in an inwards recessed manner. In this way, the multipurpose transfer pump free of secondary water filling disclosed by the application can achieve a self-priming effect without filling water into the pump body when the motor works for a second time, thus improving the impeller lubricating effect.

Embodiments of the present disclosure include a drive belt tensioner configured to adjust tension in a drive belt of a blower assembly for a heating, ventilation, and/or air conditioning (HVAC) system. The drive belt tensioner includes a mounting bracket configured to couple directly to a blower housing that is configured to house a blower of the blower assembly. The drive belt tensioner further includes an idler pulley configured to contact the drive belt. A position of the idler pulley is adjustable relative to the mounting bracket to enable adjustment of the tension in the drive belt.

A flow generator includes a housing, a blower structured to generate a flow of pressurized breathable air, and a suspension device to support the blower within the housing and provide a pressure seal between low and high pressure sides of the blower. The suspension device includes a bellows-like portion provided along the perimeter of the blower to absorb shock applied at least radially to the blower and one or more cones provided along upper and/or lower sides of the blower to absorb shock applied at least axially to the blower.

The disclosure relates to a blower housing component with a housing body and a mounting flange extending radially outward from the housing body, at which mounting flange multiple mounting points are arranged for mounting the blower housing component, which mounting points are evenly spaced in the circumferential direction, wherein radial ribs extending radially in a straight line along the mounting flange are formed between the housing body and the mounting points, and wherein the radial ribs are intersected by tangential ribs extending along the mounting flange, which tangential ribs extend tangentially to the housing body between two of the mounting points, respectively, and connect the two mounting points, respectively.

A motor vehicle fuel pump cover system. The system protects a connection between a fuel line and a fuel pump. The cover includes a cover for a fuel pump. Both parts of the cover define a raised wall around the connection. The cover also includes a second cover. The second cover is hinged to the first cover and forms a dome to cover the connection. The dome has an interior peripheral surface that covers the raised wall to thereby form a chamber protected against foreign matter infiltration. In another aspect, the disclosure relates to a motor vehicle fuel pump having an exterior fuel connection protected by the cover system against damage caused by foreign matter.

A motor vehicle fuel pump cover system. The system protects a connection between a fuel line and a fuel pump. The cover includes a cover for a fuel pump. Both parts of the cover define a raised wall around the connection. The cover also includes a second cover. The second cover is hinged to the first cover and forms a dome to cover the connection. The dome has an interior peripheral surface that covers the raised wall to thereby form a chamber protected against foreign matter infiltration. In another aspect, the disclosure relates to a motor vehicle fuel pump having an exterior fuel connection protected by the cover system against damage caused by foreign matter.

An identification method that identifies a type of a fan motor unit in an air blowing system that includes: a fan motor unit including a motor, a fan, and a casing; and a controller that controls the fan motor unit. The fan motor unit blows air to the outside. The identification method includes: a first step of the controller outputting, to the fan motor unit, a first air flow rate instruction that is output at a time of performing control to cause the fan motor unit to operate normally; a second step of the controller acquiring a first speed notification that is output from the fan motor unit in response to the outputting of the first air flow rate instruction; and a third step of the controller identifying, based on the first air flow rate instruction and the first speed notification, a type of the fan motor unit and outputting a type identification signal indicating the identified type.

An inflatable stand-up paddle board is provided including: a body including a top sheet, a bottom sheet, and an outer sheet defining an inflatable chamber. The board further includes an inner sheet defining an installation space spaced apart from the inflatable chamber by the inner sheet. An air pump assembly is disposed in the installation space and includes: a casing, and an air pump including an air inlet that communicates with an exterior of the inflatable chamber, and an air outlet that communicates with the inflatable chamber via a first vent hole in the inner sheet.

A pump impeller, which can be part of a pump, has an impeller surface and blades being arranged on the impeller surface, wherein at least one of the blades is a blade of the first type which has a blade edge which is inclined toward the front in the rotational direction. The pump impeller can also have blades of a first type and of a second type, the blade geometries thereof differing from one another. A housing element for a pump or of a pump has a housing inner wall defining a flow channel for a fluid medium extending along a central axis. The cross section of the flow channel is greater in a main flow direction and the housing inner wall has a surface structure configured such that it counteracts a return flow counter to the main flow direction along the housing inner wall of the fluid medium.

Proposed are a blower for a ventilation seat having a warm-air-blowing function and a vehicular ventilation seat including the same. The blower moves air supplied to the vehicular ventilation seat. The blower includes a housing having an accommodation space formed therein and including an inlet receiving air and an outlet discharging air, a motor mounted in the housing, an impeller mounted in the housing and configured to be driven by the motor to move air, a printed circuit board mounted in the housing, and a heater mounted in the housing so as to be connected to the printed circuit board and configured to heat the air flowing through the housing.