摘要:
A vacuum pump and a damper for the vacuum pump are provided so as to increase vibration isolation in a twisting direction with a simple structure and prevent rupture of an O-ring and an elastic member by regulating a misalignment of flanges facing each other. Provided are a first flange and a second flange, each having a central opening, the flanges being shaped like rings opposed to each other; an O-ring and an intermediate ring that are disposed between the first flange and the second flange; O-rings disposed between the first flange and the intermediate flange and between the intermediate ring and the second flange; a plurality of elastic members that are disposed between the first flange and the second flange and are spread in the circumferential direction of central openings; and airtightness keeping means including positioning pins inserted into positioning holes sequentially provided on the first flange, the intermediate ring, and the second flange.
摘要:
The present invention provides a splinter shield for a vacuum pump, capable of reducing costs of the splinter shield by obtaining a single sheet of splinter shield having a required strength, in which fastening strength to a fixing groove is enhanced to prevent the splinter shield from bending toward the inside of a pump and coming into contact with equipment inside the pump when air rushes into the pump through an inlet port and to prevent the splinter shield from falling. Furthermore, attachment and removal of the splinter shield with respect to the inlet port are facilitated. The present invention is a splinter shield for a vacuum pump in which a rim formed in a circumferential edge portion of the splinter shield is inserted into a fixing groove that is provided in a concave manner in an inner circumferential portion of an inlet port, and the splinter shield is provided in a tensioned manner to the inlet port by pushing a retaining ring into the fixing groove, wherein locking parts that are locked into the retaining ring at a plurality of sections in the rim are provided in a standing manner at substantially right angles to the rim.
摘要:
An exhaust system (2) is used for evacuating a chamber of a manufacturing apparatus (1) for manufacturing semiconductor devices, liquid crystal panels, LEDs, or solar cells. The exhaust system (2) includes a vacuum pump apparatus (3) for evacuating the chamber, an exhaust gas treatment apparatus (5) for treating an exhaust gas discharged from the chamber, and a controller (6) for controlling the vacuum pump apparatus (3) and/or the exhaust gas treatment apparatus (5). Information of operation process of the manufacturing apparatus (1), and the kind of gas and the flow rate of the gas supplied to the manufacturing apparatus (1) is inputted into the controller (6) to control the vacuum pump apparatus (3) and/or the exhaust gas treatment apparatus (5).
摘要:
A double vacuum pump apparatus (Y2) includes positive displacement vacuum pumps (40A, 40B) and lines (52, 60). Each of the vacuum pumps includes a suction port (41) and a discharge port (42), and a pressure detector (80) is provided in the vicinity of the suction port (41) of the double vacuum pump apparatus (Y2). The line (52) connects the discharge port (42) of the vacuum pump (40A) to the suction port (41) of the vacuum pump (40B). The line (60) has an end (E6) and an end (E5) that are connected to the connection line (52), and includes a buffer tube (Z1) and an on-off valve (61) located between the tube (Zl) and the end (E5). A pressure detection signal from the pressure detector (80) is used as an on/off signal for the on-off valve (61).
摘要:
To improve the isolation rate of vibrations propagating from a vacuum pump to a vacuum device. A turbo-molecular pump 1 is connected to a main vacuum chamber 2 via a vacuum seal structure 4. Further, a sub-vacuum chamber 3 is provided so as to contain the main vacuum chamber 2, the vacuum seal structure 4, and an inlet 110 of the turbo-molecular pump 1. The roughing evacuation of the sub-vacuum chamber 3 is accomplished by using a roughing vacuum pump 6 to make the sub-vacuum chamber 3 in a medium vacuum state. Since the vacuum seal structure 4 is arranged in the sub-vacuum chamber 3 in a medium vacuum state, a difference in pressure between the main vacuum chamber 2 and the sub-vacuum chamber 3 can be made extremely small. Thereby, the amount of gas leakage to the main vacuum chamber 2 can be kept at a small value. Also, the vacuum seal structure 4 can use, for example, a non-contact seal structure or a highly flexible seal member because it does not perform a function of supporting the turbo-molecular pump 1.
摘要:
A vacuum apparatus has a vacuum chamber provided with a gas inlet and a gas outlet, and mechanical vacuum pumps in a plurality of stages for reducing a pressure inside the vacuum chamber and maintaining the pressure-reduced state. The vacuum apparatus has an ejector pump (60) connected to a discharge port (57) of a screw pump (A) as the vacuum pump at the last stage among the vacuum pumps. The vacuum apparatus is reduced in power consumption and used in the semiconductor manufacturing field and so on.
摘要:
The present invention provides a vacuum apparatus that includes a plurality of vacuum containers each having a gas inlet and an exhaust outlet, a gas supply system for introducing a desired gas into each of the vacuum containers through the gas inlet, and an exhaust system for keeping each of the vacuum containers at a low pressure. In this vacuum apparatus, the exhaust system includes a plurality of multistage vacuum pumps connected in series. The exhaust outlet pressure of the last-stage vacuum pump is substantially at atmospheric pressure. The last-stage vacuum pump is designed to exhaust gas from a plurality of vacuum pumps at previous stages.
摘要:
A combination cryopump/getter pump (50) including a cryopump section (52) having a cryopump inlet (76), a getter pump section (54) having a getter pump inlet (86), and a mechanism (60) for coupling the cryopump section (52) and the getter pump section (54) to a single port (58) of a process chamber to be evacuated. Preferably, a cylindrical getter pump section (54) surrounds a cylindrical cryopump section (52). Preferably, the cryopump section (52) and the getter pump section (54) are coupled to the common port (58) of the process chamber by a gate valve mechanism (60). In one embodiment, the gate valve mechanism (60) isolates the cryopump inlet (76) and the getter pump inlet (86) when in a closed position. In another embodiment, the gate valve mechanism (60) does not isolate the cryopump inlet (76) and the getter pump inlet (86) when in a closed position. Preferably, thermal insulation (78) is provided between the getter pump section (54) and the cryopump section (52) to thermally isolate the two sections. The cryopump section preferably includes both a 15 °K array (72) and an 80 °K array (70a-d).