The present invention relates to a two-layered blower unit of an air conditioner for a vehicle, which includes a means for smoothly guiding axially flowing air to flow in a radial direction and has optimized structure and arrangement for fixing the guide means.

An air-conditioning unit for a vehicle includes an air conditioning case, a blower, and a rectifying mechanism. The blower has a blower fan rotating around a fan axis and arranged in an in-case passage of the air conditioning case, and blows out air drawn from one side in an axial direction of the fan axis by rotation of the blower fan. The rectifying mechanism is arranged downstream of the blower fan in the in-case passage, and the air passes through the rectifying mechanism. The blower fan is arranged so that the other side of the fan axis that is opposite to the one side extends toward a downstream side of the in-case passage. The rectifying mechanism suppresses a swirling flow generated by the rotation of the blower fan in the air blown out from the blower fan as compared with the blown-out air prior to flowing into the rectifying mechanism.

A blower apparatus includes an impeller and a casing that accommodates the impeller. The casing includes an upper wall including an intake port, a lower wall, a side wall that includes an exhaust port, and a tongue portion connected to the upper wall. The side wall includes a first side wall, and a second side wall disposed downstream in a rotational direction of the impeller relative to the first side wall via the exhaust port. The tongue portion extends from the second side wall toward the first side wall, and includes a lower portion opposed to the lower wall. The lower portion includes a first lower portion on the base end side and a second lower portion on the tip side. A distance between the first lower portion and the lower wall is shorter than a distance between the second lower portion and the lower wall.

A casing, which receives a fan, has a suction port forming portion that forms a suction port. A separation tube has a tube upper end portion, which forms an air inlet, through which the air flows into an inside of the separation tube. The tube upper end portion is located on one side of the suction port forming portion in an axial direction such that the tube upper end portion overlaps with a portion of the suction port in the axial direction. A rib is formed at a periphery of the suction port. The periphery of the suction port has: an overlapping region, which overlaps with the tube upper end portion in the axial direction; and a non-overlapping region, which does not overlap with the tube upper end portion in the axial direction. The rib occupies more area in the non-overlapping region than in the overlapping region.

A dual-layer flow blower unit for a vehicle air-conditioner is disclosed. The blower unit has a scroll shape so as to be blown to each of a pair of an upper blower duct and a lower blower duct, and includes a pair of an upper blower case and a lower blower case which are vertically partitioned by a partition plate. The blower unit comprises a drainage case coupled to a lower part of the lower blower case and having a drainage duct formed so as to incline downward along a longitudinal direction of the lower blower duct. The blower unit includes a blower motor cooling unit that cools a blower motor by branching a part of an air blown from the lower blower duct, flowing it into an inside of a cooling chamber, and then circulating it inside a motor case.

In a method of manufacturing a blower unit including an electric motor, a blower casing, first and second scroll casings, a sealing material that forms a seal between an opening forming portion of the blower casing and the electric motor, a bell mouth portion that guides an air flow to the second centrifugal fan, and a retaining portion that retains the sealing material, the method includes interposing the sealing material between the retaining portion and the electric motor, and attaching the bell mouth portion and the retaining portion to the electric motor, connecting the first and second centrifugal fans to the rotating shaft of the electric motor while the bell mouth portion and the retaining portion are attached to the electric motor, and closing the second opening portion of the blower casing by attaching the electric motor to the blower casing.

Disclosed is an air-conditioning cushion for vehicles, which includes a seat cushion part, a transmission part and an energy-controlling part; the seat cushion part is connected with the energy-controlling part through the transmission part. The energy-controlling part is detachably mounted at an air outlet of an air conditioner of a vehicle, and cold/hot air from the air conditioner is transmitted to the seat cushion part through an airflow path to cool/heat a human body. The energy-controlling part includes a rear air conditioner cover, a high-speed centrifugal fan, and a front air conditioner cover in sequence according to an assembly order. The front and rear air conditioner covers have shell-like structures corresponding to each other, and an accommodating cavity with a sealed circumference is formed after the front and rear air conditioner covers are assembled. The high-speed centrifugal fan is mounted and fixed inside the accommodating cavity.

The invention relates to an air intake housing (21), in particular for a heating, ventilation and/or air conditioning device, comprising: —at least two distinct air inlets (24, 26), and —air guiding members (27, 28, 30) configured to direct at least one air flow that is intended to be admitted into the air intake housing (21). According to the invention, the air guiding members comprise at least three flaps (27, 28, 30), one of these being a central flap (27) and two lateral flaps (28, 30) arranged one on each side of the central flap (27), said flaps (27, 28, 30) being positioned between the said two distinct air inlets (24, 26) of the air intake housing (21) so as to be able to move about a single axis of pivoting (33). The invention also relates to a suction blower (1) comprising such an air intake housing (21) and to a corresponding heating, ventilation and/or air conditioning device.

A facility-based conditioned air blower system for ventilating a trailer interior includes a fan and a split air conditioner system. The fan includes an inlet portion, a fan housing, and a discharge portion. The discharge portion includes a pivoting elbow conduit configured to rotate into and away from the trailer interior. The split air conditioner system includes an evaporator unit coupled to the inlet portion of the fan, and further coupled to a condenser unit by way of a closed-loop refrigerant line.

In a cross section of a flow passage formed to conduct a flow of air from an inside/outside air box to an upper air passage of a scroll casing while the cross section of the flow passage is taken along an imaginary plane which includes an outer edge of an air guide plate and is parallel to a rotational axis of an impeller, a passage section, which is located on one radial side of a separation tube where a nose of the scroll casing is placed, is defined as a first opening section, and another passage section, which is located on an opposite radial side of the separation tube, which is opposite to the nose, is defined as a second opening section. A passage cross-sectional area of the second opening section is larger than a passage cross-sectional area of the first opening section.