摘要:
A vacuum pump and a heat insulating member for the vacuum pump are provided that improve the rigidity and heat insulating effect of a heat insulating portion and facilitate the control of intended temperatures of components within the pump. A turbomolecular pump having at least a cooling function includes a heat insulator that is disposed on a threaded and has a hollow structure including cavities extending in the axial direction.
摘要:
A centrifugal compressor 1 of the present invention includes: an oil heater 60 configured to adjust temperature of environment by a heat medium; a heat shield 11 that is provided between a suction flow path 18 and the oil heater 60 and defines, with a diaphragm 3, the suction flow path 18 introducing a fluid F to an impeller 9; and straightening vanes 3B provided in the suction flow path 18 and configured to straighten the fluid F flowing through the suction flow path 18. Top ends of the straightening vanes 3B are inserted into interference maintaining grooves 45 in the heat shield 11, and even if thermal deformation occurs and the straightening vanes 3B are displaced most in a direction X away from the heat shield 11, the top ends of the straightening vanes 3B stay in the interference maintaining grooves 45 in the heat shield 11.
摘要:
Provided is a vacuum pump that prevents the solidification of gas while being operated properly. The vacuum pump includes a rotor that is supported rotatably on a base, a stator that has a thread groove portion, and a heating structure that heats the stator. The heating structure has a spacer that insulates the stator from stator components other than the stator, and a cartridge heater that heats the stator. The distance between a rotor cylindrical portion and the stator at the inlet port side is set to be equal to or greater than the distance between the rotor cylindrical portion and the stator at the outlet port side.
摘要:
A heat sink (100) that can be positioned around a rotating shaft (18) includes a cylindrical body (102) with a first end and a second end, a bore (104) running through the body (102) with a first opening at the first end of the body (102) and a second opening at the second end of the body (102), fins (106) extending radially outward from the body (102) and running from the first end to the second end of the body (102), and channels (108) defined between the fins (106) and running from the first end to the second end of the body (102).
摘要:
An electric supercharger includes an electric motor, a motor housing, a drive circuit, a circuit housing, and a compressing portion. The circuit housing includes an accommodating wall having a shape projecting from an outer surface of the motor housing, and a bottom located at a distal end in the projecting direction of the accommodating wall. The circuit housing together with the motor housing, hermetically confines the drive circuit. The bottom includes a heat release portion that faces the outer side of the circuit housing. The drive circuit is thermally coupled to an inner surface of the heat release portion that faces the inner side of circuit housing.
摘要:
A turbofan engine including an axially extending inlet wall (28) surrounding an inlet flow path (30). A radial distance between the inlet wall (28) and an inner wall (42) adjacent the fan (12) defines a downstream height (H) of the inlet flow path (30). A plurality of vanes (50) are circumferentially spaced around the inlet, each of the vanes (50) extending radially inwardly from the inlet wall (28), a maximum radial distance between a tip (52) of each of the vanes (50) and the inlet wall (28) defining a maximum height (h max ) of the vane (50). The maximum height (h max ) of the vane (50) is at most 50% of the downstream height (H) of the flow path (30). In another embodiment, the maximum height (h max ) of the vane (50) is at most 50% of the maximum fan blade span (S max ).
摘要:
The turbomachine (110) includes a compressor (124), an inner annular casing (119), and an outer annular casing (118). The inner annular casing (119) and the outer annular casing (118) define at least one cavity (302) therebetween. The clearance control system (151) includes a manifold system (204) including at least one conduit (208) disposed within the cavities and configured to channel (214) a flow of cooling fluid between the cavities. The clearance control system (151) also includes an impingement system (206) including a header (210) and at least one plenum (216) configured to channel (214) the flow of cooling fluid to the inner annular casing (119). The conduits (208) configured to channel (214) the flow of cooling fluid to the impingement system (206). The clearance control system (151) further includes a channel system (212) including at least one channels configured to channel (214) the flow of cooling fluid to the turbomachine (110). The channels (214) are configured to control the flow of cooling fluid to the manifold system (204). A corresponding turbomachine and method of controlling tip clearance are also provided.
摘要:
An object is to provide a vacuum pump that enables, without being affected by a flow rate of gas to be discharged, concentrated and efficient heating of only a stator component of an exhaust side gas channel that needs to be heated in order to prevent deposition of products and that also enables prevention of deposition of products in the exhaust side gas channel as a result of the heating, and improvement of pump emission performance. The vacuum pump has a rotor rotatably arranged on a pump base and a gas channel through which gas sucked by rotation of the gas is guided to an outlet port, and further includes heat insulating means for thermally insulating a stator component, which forms an exhaust side gas channel in the gas channel, from other components and heating means for heating the thermally insulated stator component.
摘要:
The invention relates to a vacuum pump comprising a rotor shaft (10), which bears one or more rotor elements (20, 22). The rotor shaft (10) is driven by an electrical driving device (30). A stator device (24) is arranged between the rotor elements (20, 22). The rotor shaft (10) is supported by bearings (32). The highly heat-generating components such as the driving device (30) and the stator device (24) are connected to a second housing part (28) in particular by means of a support part (36). Heat-sensitive components such as the bearing (32) are supported by means of a separate first housing part (34). The two housing parts can be kept at different temperatures, for example by means of separate cooling devices. Thus, the operating temperature of the in particular pressure-side bearing (32) can be reduced, and therefore the service life can be extended.
摘要:
The present disclosure includes cargo loading systems and components including cargo systems utilizing one or more air cushions to elevate one or more cargo shuttles. Air is delivered to the air cushions by compact centrifugal air blowers. Such compact centrifugal air blowers are designed to provide sufficient power to inflate air cushions, while having a sufficiently short profile.