US2772047A - Vacuum plant located in pre-vacuum tank - Google Patents

Vacuum plant located in pre-vacuum tank Download PDF

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Publication number
US2772047A
US2772047A US264997A US26499752A US2772047A US 2772047 A US2772047 A US 2772047A US 264997 A US264997 A US 264997A US 26499752 A US26499752 A US 26499752A US 2772047 A US2772047 A US 2772047A
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United States
Prior art keywords
vacuum
tank
pump
vacuum tank
exhausting
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Expired - Lifetime
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US264997A
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Sonnberger Heinrich
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Carl Zeiss AG
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Carl Zeiss AG
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Priority to US264997A priority Critical patent/US2772047A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F9/00—Diffusion pumps
    • F04F9/04—Diffusion pumps in combination with fore pumps, e.g. use of isolating valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

Definitions

  • the pre-vacuum tank may be of any desired form, there is nothing to prevent adapting its design to the parts to be built into the tank or combining these parts into a unit.
  • the manner in which the pre-vacuum tank is combined with the remaining parts of the plant will depend upon the special requirements of "ice each particular case and may vary within wide limits. As an instance, the pre-vacuum tank may be in the form of a seat for the person operating the instrument.
  • the drawing shows the invention in a schematic plan sketch: Disposed in a cylindrical and completely closed vessel a representing the pre-vacuum tank is a base plate b, which is suspended from the wall of tank a by springs c. Mounted on base plate b are a pre-exhausting pump d and an electric motor e for driving it.
  • the pump exhausts the air in the tank through an inlet d2 of the pump.
  • a hose d1 sealed against the pre-vacuum leads through the wall of tank a into the outer air through which the exhausted air will be put out.
  • the pertinent shut-0E valve is located at the suction end, this valve must here be imagined as being at the pressure end.
  • a vacuum prevails in the interior of the tank, so that the noises occasioned by the pump cannot escape outside.
  • a hermetic pre-vacuum tank means for exhausting said tank, said means being a pre-exhausting pump with an inlet in the interior of said tank and an outlet outside of said tank, as well as a motor coupled with said preexhausting pump, said pre-exhausting pump being suspended in the interior of said pre-vacuum tank for re-.
  • a hermetic pre-vacuum tank means for exhausting said tank, said means being a pre-exhausting pump with an inlet in the interior of said tank and an outlet outside of said I tank, as well as an electric motor coupled with said pre-exhausting pump, said electric motor and said we References Cited in the file of this patent UNITED STATES PATENTS 2,028,985 Mahon Jan. 28, 1936 2,060,980 Ell Mar. 17, 1936 2,364,038 Touborg Nov. 28, 1944 2,510,632 Hemphill June 6, 1950

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

Nov. 27, 1956 H. SONNBERGER VACUUM PLANT LOCATED IN PRE-VACUUM TANK Filed Jan. 4, 1952 1N VENTOR United States Patent VACUUM PLANT LOCATED IN PRE-VACUUM TANK Heinrich Sonnberger, Heidenheim (Brenz), Germany, assignor to Carl Zeiss, Heidenheim (Brenz), Germany Application January 4, 1952, Serial No. 264,997
2 Claims. (Cl. 230232) In the usual type of vacuum plant, a partial vacuum is first formed in a preliminary-vacuum tank by means of an ordinary pump, and the desired high vacuum is then produced by further exhausting with the vacuum pump proper. Because of the troublesome noises caused by the pre-exhausting pump, it has hitherto been customary to set up this pump separately from the remaining plant components, frequently even in another room.
This separation, however, is very undesirable in many cases and is especially so in the construction of small and handy instruments working with a high vacuum, as for instance electronic microscopes. Direct connection in such cases has so far been impracticable because of interference with operation from the attendant racket. This difficulty is overcome by the present invention, in which the pre-exhausting pump is disposed within the pre-vacuum tank. Since sound is preponderantly transmitted through air, this arangement gives very effective damping, and therewith abatement of the objectionable pump noises.
Any such means as have so far been used for minimizing vibration and clatter, can be employed without difliculty also in the interior of the pre-vacuum tank. In particular, the electric motor for driving the pre-exhausting pump can be accommodated inside this tank. It is merely necessary, since the motor cannot be cooled by ventilation, to provide for suflicient cooling by radiation. Inasmuch as outwardly, the pre-vacuum tank may be of any desired form, there is nothing to prevent adapting its design to the parts to be built into the tank or combining these parts into a unit. The manner in which the pre-vacuum tank is combined with the remaining parts of the plant will depend upon the special requirements of "ice each particular case and may vary within wide limits. As an instance, the pre-vacuum tank may be in the form of a seat for the person operating the instrument.
The drawing shows the invention in a schematic plan sketch: Disposed in a cylindrical and completely closed vessel a representing the pre-vacuum tank is a base plate b, which is suspended from the wall of tank a by springs c. Mounted on base plate b are a pre-exhausting pump d and an electric motor e for driving it. The pump exhausts the air in the tank through an inlet d2 of the pump. From pump d, a hose d1 sealed against the pre-vacuum leads through the wall of tank a into the outer air through which the exhausted air will be put out. While, in a pump set up in the usual Way, the pertinent shut-0E valve is located at the suction end, this valve must here be imagined as being at the pressure end. As long as the pump is working, a vacuum prevails in the interior of the tank, so that the noises occasioned by the pump cannot escape outside.
I claim:
1. In a vacuum plant of an electron microscope a hermetic pre-vacuum tank, means for exhausting said tank, said means being a pre-exhausting pump with an inlet in the interior of said tank and an outlet outside of said tank, as well as a motor coupled with said preexhausting pump, said pre-exhausting pump being suspended in the interior of said pre-vacuum tank for re-.
ducing the noise of said pump it being in operation.
2. In a vacuum plant of an electron microscope a hermetic pre-vacuum tank, means for exhausting said tank, said means being a pre-exhausting pump with an inlet in the interior of said tank and an outlet outside of said I tank, as well as an electric motor coupled with said pre-exhausting pump, said electric motor and said we References Cited in the file of this patent UNITED STATES PATENTS 2,028,985 Mahon Jan. 28, 1936 2,060,980 Ell Mar. 17, 1936 2,364,038 Touborg Nov. 28, 1944 2,510,632 Hemphill June 6, 1950
US264997A 1952-01-04 1952-01-04 Vacuum plant located in pre-vacuum tank Expired - Lifetime US2772047A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182902A (en) * 1963-02-06 1965-05-11 Westinghouse Electric Corp Refrigeration apparatus
US3187995A (en) * 1962-08-27 1965-06-08 Danfoss Ved Ing M Clausen Capsule for refrigerating machines
US3398887A (en) * 1966-08-23 1968-08-27 Ingersoll Rand Co Encapsulated compressor
US3591315A (en) * 1969-11-26 1971-07-06 Gen Motors Corp Reciprocal compressor and accumulator for automatic vehicle leveling system
US3955900A (en) * 1975-03-17 1976-05-11 Vinci J Fredrick Mounting structure
US4470772A (en) * 1982-05-20 1984-09-11 Tecumseh Products Company Direct suction radial compressor
US5308224A (en) * 1992-02-10 1994-05-03 Olivetti-Canon Industriale S.P.A. Antivibration suspension device for a blower
US20160084341A1 (en) * 2014-09-24 2016-03-24 Seicon Limited Vibration Isolation System for Components of HVAC Equipment and the Like
EP3677777A4 (en) * 2017-08-28 2020-08-19 Panasonic Intellectual Property Management Co., Ltd. Elastic support structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028985A (en) * 1932-05-25 1936-01-28 Clarence A Mahon Fan
US2060980A (en) * 1933-09-26 1936-11-17 Electrolux Corp Vacuum cleaner
US2364038A (en) * 1941-12-06 1944-11-28 Touborg Jens Hermetic refrigeration compressor
US2510632A (en) * 1945-11-27 1950-06-06 Gen Electric Machine cooling system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028985A (en) * 1932-05-25 1936-01-28 Clarence A Mahon Fan
US2060980A (en) * 1933-09-26 1936-11-17 Electrolux Corp Vacuum cleaner
US2364038A (en) * 1941-12-06 1944-11-28 Touborg Jens Hermetic refrigeration compressor
US2510632A (en) * 1945-11-27 1950-06-06 Gen Electric Machine cooling system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187995A (en) * 1962-08-27 1965-06-08 Danfoss Ved Ing M Clausen Capsule for refrigerating machines
US3182902A (en) * 1963-02-06 1965-05-11 Westinghouse Electric Corp Refrigeration apparatus
US3398887A (en) * 1966-08-23 1968-08-27 Ingersoll Rand Co Encapsulated compressor
US3591315A (en) * 1969-11-26 1971-07-06 Gen Motors Corp Reciprocal compressor and accumulator for automatic vehicle leveling system
US3955900A (en) * 1975-03-17 1976-05-11 Vinci J Fredrick Mounting structure
US4470772A (en) * 1982-05-20 1984-09-11 Tecumseh Products Company Direct suction radial compressor
US5308224A (en) * 1992-02-10 1994-05-03 Olivetti-Canon Industriale S.P.A. Antivibration suspension device for a blower
US20160084341A1 (en) * 2014-09-24 2016-03-24 Seicon Limited Vibration Isolation System for Components of HVAC Equipment and the Like
EP3677777A4 (en) * 2017-08-28 2020-08-19 Panasonic Intellectual Property Management Co., Ltd. Elastic support structure

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