摘要:
A cutoff for a blower housing. The cutoff comprises a cutoff having an edge, the edge includes first and second ends and a midsection. The midsection includes an acoustical reduction section. Each end includes an efficiency enhancing portion curving from a first smaller radial dimension to a second greater radial dimension proximal the acoustical reduction section. The acoustical reduction section is located between the first and second ends and has a greater third radial dimension greater than the first or second radial dimensions.
摘要:
An air handling blower housing for an HVAC system is formed by two opposed housing parts which are each fabricated of a compression molded reinforced thermoset polymer composition. The housing parts are joined along a parting line, preferably perpendicular to the axis of a motor driven impeller mounted within the housing by wedge shaped clips which engage cooperating bosses aligned with each other when the housing parts are joined. The construction of the housing parts provides for an improved method of assembly of an air handling blower of a type particularly adapted for HVAC systems.
摘要:
An airhandling unit for an HVAC system includes a cabinet having an electric motor driven centrifugal blower disposed therein. The blower includes a scroll or volute type blower housing which may be formed of opposed releasably connectable housing parts. The blower housing parts include opposed sidewalls with axially extending compound curved portions which cooperate with an end wall which is configured to have portions which are not of substantially constant increasing radial distance from the blower impeller axis of rotation. However, a constantly increasing airflow cross-sectional flow area is provided within the blower housing for blower discharge air. The disposition of the blower housing sidewalls with respect to the cabinet walls provides improved airflow distribution for air flowing into the blower air inlet openings.
摘要:
Disclosed are an axial fan assembly and a motor home air-conditioner using same. The motor home air-conditioner comprises an air-conditioner body (1). A heat exchanging system, a central air-inlet channel (2) and a peripheral air-outlet channel (3) are arranged in the air-conditioner body (1). The heat exchanging system comprises an evaporator assembly (4) distributed in a ring and an axial fan assembly (5) located within the evaporator assembly (4). The axial fan assembly (5) comprises an axial fan (6) and a skeleton-type blast ring (7). The axial fan (6) is mounted within the skeleton-type blast ring (7). The skeleton-type blast ring (7) comprises a drainage pressurized region (71) and an airflow diffusion region (72) for air to flow out. The airflow diffusion region (72) comprises a circumferential air-outlet region (721) and an axial air-outlet region (722). The present axial fan assembly not only meets the requirement of strength in installation, but also changes the direction of airflow blown by the axial fan to achieve the blowing effect of mixed windflows
摘要:
An air handling blower housing for an HVAC system is formed by two opposed housing parts which are each fabricated of a compression molded reinforced thermoset polymer composition. The housing parts are joined along a parting line, preferably perpendicular to the axis of a motor driven impeller mounted within the housing by wedge shaped clips which engage cooperating bosses aligned with each other when the housing parts are joined. The construction of the housing parts provides for an improved method of assembly of an air handling blower of a type particularly adapted for HVAC systems.
摘要:
The present invention relates to a spiral pumping stage for a vacuum pump, which is particularly intended to be arranged at an additional side inlet (48) of a vacuum pump (40) and allows to obtain an improved pumping speed at said additional side inlet. According to the invention, the spiral pumping stage comprises both centripetal (11) and centrifugal (21) pumping channels, so that the gas is pumped from the periphery to the center of the pumping stage throughout a first group of pumping channels and it is pumped from the center to the periphery of the pumping stage throughout a second group of pumping channels. Thanks to this inventive arrangement, both the gas coming from a previous pumping stage or a main pump inlet (42) arranged upstream the pumping stage according to the invention and the gas coming from the additional side inlet (48) can be effectively pumped by the pumping stage according to the invention.
摘要:
A supersonic compressor rotor includes a rotor disk (48) comprising an upstream surface (60), a downstream surface (62), and a radially outer surface (58) that extends between the upstream surface and the downstream surface, the radially outer surface including an inlet surface (148), an outlet surface (150), and a transition surface (152) extending between the inlet surface and the outlet surface, the rotor disk defining a centerline axis (54), a plurality of vanes (46) coupled to the radially outer surface, adjacent the vanes forming a pair and oriented such that a flow channel (86) is defined between each the pair of adjacent vanes, the flow channel extending between an inlet opening and an outlet opening, the inlet surface defining an inlet plane (154) extending between the inlet opening and the transition surface, the outlet surface defining an outlet plane (156) extending between the outlet opening and the transition surface that is not parallel to the inlet plane, and at least one supersonic compression ramp (110) positioned within the flow channel to facilitate forming at least one compression wave (112) within the flow channel.
摘要:
The invention relates to a multi-stage vacuum pump comprising at least one turbocompressor stage (11) and equipped with a circular compressor stage (33) on the pressure side of the turbocompressor stage. Said pump has small axial dimensions, enabling the compression to be increased without significantly increasing the space requirement.
摘要:
The invention relates to a rotor (10) for a thermal turbomachine, in particular a gas turbine, which rotor is designed to conduct a medium, such as compressor air, in the interior of the rotor. In order to conduct said medium in the interior with low flow losses and at the same time to specify a rotor (10) that can be produced comparatively simply and economically, a separately produced blade wheel (50) according to the invention is arranged between the mutually adjacent hub regions of the two rotor disks (34, 42), and that a sleeve (62) is provided for fastening the blade wheel (50) to one of the two rotor disks (34, 42), which sleeve extends through the central opening (30) of said one rotor disk (34, 42) and comprises a collar (64) serving as a stop at a first end (63) of the sleeve and comprises a second end (65) opposite the first end (63), on which second end (65) the blade wheel (50) is fastened.
摘要:
A supersonic compressor system (10) includes a casing defining a cavity (34) extending between a fluid inlet (28) and a fluid outlet (30), a first drive shaft (72) positioned within the cavity, wherein a centerline axis (24) extends along a centerline of the first drive shaft, a supersonic compressor rotor (40) coupled to the first drive shaft and positioned in flow communication between the fluid inlet and the fluid outlet, the supersonic compressor rotor including at least one supersonic compression ramp (140) configured to form at least one compression wave (142) for compressing a fluid (88), and a centrifugal compressor assembly (46) positioned in flow communication between the supersonic compressor rotor and the fluid outlet, the centrifugal compressor assembly configured to compress fluid received from the supersonic compressor rotor.