SE457748B - Vacuum chamber with door - Google Patents

Vacuum chamber with door

Info

Publication number
SE457748B
SE457748B SE8404932A SE8404932A SE457748B SE 457748 B SE457748 B SE 457748B SE 8404932 A SE8404932 A SE 8404932A SE 8404932 A SE8404932 A SE 8404932A SE 457748 B SE457748 B SE 457748B
Authority
SE
Sweden
Prior art keywords
door
chamber
container
vacuum
space
Prior art date
Application number
SE8404932A
Other languages
Swedish (sv)
Other versions
SE8404932D0 (en
SE8404932L (en
Inventor
H O Mattsson
Original Assignee
Electrolux Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux Ab filed Critical Electrolux Ab
Priority to SE8404932A priority Critical patent/SE457748B/en
Publication of SE8404932D0 publication Critical patent/SE8404932D0/en
Publication of SE8404932L publication Critical patent/SE8404932L/en
Publication of SE457748B publication Critical patent/SE457748B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Tents Or Canopies (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

A chamber (12) in a vessel and with a door (14) is kept under vacuum by a first pump. The door ir sealed by outer (18) and inner (20) rings, and any air leaking past the outer ring is evacuated by a second pump (30).

Description

457 748 1 Dörren 14 avtätas mot behållaren 10 med en yttre och en inre tätningsring 18 respektive 2D, som är anordnade i tätningsspar 22 respektive 24 i behailarens ändyta 26. The door 14 is sealed against the container 10 with an outer and an inner sealing ring 18 and 2D, respectively, which are arranged in sealing grooves 22 and 24, respectively, in the end surface 26 of the container.

När vakuum rader i kammaren 12, haller detta vakuum dörren 14 tryckt mot ytan 26, varvid tätningsringarna 18 och 20 halles intryckta i sina spar 22, 24 av dörren och hindrar omgivande luft att tränga in i kammaren 12.When vacuum lines in the chamber 12, it keeps the vacuum door 14 pressed against the surface 26, keeping the sealing rings 18 and 20 pressed into their grooves 22, 24 by the door and preventing ambient air from penetrating the chamber 12.

Det kan emellertid inte förhindras att luft fran omgivningen läcker förbi ringarna 18 och 20 in i kammaren 12. Större delen av denna läckande luft evakueras fran ett utrymme 28 mellan ringarna 18 och 20 av en vakuumpump 30. Endast en mindre del luft läcker vidare fran utrymmet 28 till kammaren 12 och evakueras där av pumpen 16.However, ambient air cannot be prevented from leaking past the rings 18 and 20 into the chamber 12. Most of this leaking air is evacuated from a space 28 between the rings 18 and 20 by a vacuum pump 30. Only a small amount of air leaks further from the space. 28 to the chamber 12 and is evacuated there by the pump 16.

När dörren 14 har stängts kan det vara svart att fa den att täta mot behållaren, att ett vakuum kan utvecklas i kammaren 12 och suga fast dörren mot behallaren. För att säkerställa dörrens 14 snabba fastsugning vid behållaren är ringen 18 anordnad utskjutbar i sitt spar 22 med tryckluft fran en -ventil 32. Ringen 18 skjutes av tryckluften mot dörren 14, som halles pa plats av ej visade styr-ningar, sa att ringen 18 tätar mot dörren 14. Därefter kan vakuum utvecklas i kammaren 12. Vid ett visst vakuum suges dörren 14 mot ytan 26, varefter tryckluften kan kopplas bort.When the door 14 has been closed, it may be black to make it seal against the container, that a vacuum can develop in the chamber 12 and suck the door against the container. To ensure the quick suction of the door 14 to the container, the ring 18 is arranged to be extendable in its groove 22 with compressed air from a valve 32. The ring 18 is pushed by the compressed air towards the door 14, which is held in place by guides (not shown), so that the ring 18 seals against the door 14. Thereafter, a vacuum can be developed in the chamber 12. At a certain vacuum, the door 14 is sucked against the surface 26, after which the compressed air can be disconnected.

I evakueringsledningen fran utrymmet 28 kan en anordning 34 för att detektera gasformigt medium fran kammaren 12 vara anordnad. Om behållaren 10 exempelvis Så användes för sterilisering av föremal med en giftig gas är steriliseringsförloppet ofta sadant, att trycket i kammaren 12 under vissa perioder är högre än trycket i utrymmet 28. Om anordningen 34 ger signal om att sadan giftig gas finnes i eva- kueringsledningen fran utrymmet 28 far man dels besked om att giftig gas släppes ut i omgivande atmosfär och dels att tätningsringen 20 inte fungerar tillfredsställande.In the evacuation line from the space 28, a device 34 for detecting gaseous medium from the chamber 12 can be arranged. If the container 10 is used, for example, for sterilizing objects with a toxic gas, the sterilization process is often such that during certain periods the pressure in the chamber 12 is higher than the pressure in the space 28. If the device 34 signals that such a toxic gas is present in the evacuation line from the space 28 it is informed that toxic gas is released into the surrounding atmosphere and that the sealing ring 20 does not function satisfactorily.

Anordningen enligt uppfinningen är lämplig att använda sqaväl vid autoklaver för sterilisering av gods som vid apparater förfrystorkning av livsmedel.The device according to the invention is suitable for use in autoclaves for sterilizing goods as in apparatus for pre-freezing food.

Claims (1)

1. I 457 748 3, P a t e n t k r a v Anordning för att åstadkomma vakuum i en kammare (12) i en behållare (10), vilken kammare är tillslutbar medelst en dörr (14), varvid en första vakuumpump (16) är anordnad att evakuera kammaren och en yttre (18) och en inre tätningsring (20), bada avsedda att väsentligen hindra omgivande atmosfär att tränga in i kammaren, är sa anordnade mellan dörren och behållaren att omgivande atmosfär först måste passera den yttre tätningsringen (18), därefter ett utrymme (28) mellan tâtningsringarna, och sedan den inre tätningsringen (20) för att tränga in i kammaren (12), k ä n n e t e c k - n ad därav att en andra vakuumpump (30) är anordnad att evakuera utrymmet (28) mellan tätningsringarna (l8,2Û).A device for providing a vacuum in a chamber (12) in a container (10), which chamber is closable by means of a door (14), a first vacuum pump (16) being arranged to evacuate the chamber and an outer (18) and an inner sealing ring (20), both intended to substantially prevent ambient atmosphere from penetrating the chamber, are arranged between the door and the container such that ambient atmosphere must first pass the outer sealing ring (18), then a space (28) between the sealing rings, and then the inner sealing ring (20) for penetrating the chamber (12), characterized in that a second vacuum pump (30) is arranged to evacuate the space (28) between the sealing rings (18). , 2Û).
SE8404932A 1984-10-02 1984-10-02 Vacuum chamber with door SE457748B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8404932A SE457748B (en) 1984-10-02 1984-10-02 Vacuum chamber with door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8404932A SE457748B (en) 1984-10-02 1984-10-02 Vacuum chamber with door

Publications (3)

Publication Number Publication Date
SE8404932D0 SE8404932D0 (en) 1984-10-02
SE8404932L SE8404932L (en) 1985-11-01
SE457748B true SE457748B (en) 1989-01-23

Family

ID=20357211

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8404932A SE457748B (en) 1984-10-02 1984-10-02 Vacuum chamber with door

Country Status (1)

Country Link
SE (1) SE457748B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042075B (en) * 2015-05-27 2017-04-26 江阴市巨匠铁艺工程有限公司 Seal plate for sealing end of pipe body

Also Published As

Publication number Publication date
SE8404932D0 (en) 1984-10-02
SE8404932L (en) 1985-11-01

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