DE62753C - Closing device for vacuum 1 cooking and similar apparatus - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The present invention relates to for vacuum vessels (namely vacuum cookers) certain locking devices in which the force required to press the sealing surfaces by steam, water or Gas pressure is applied.

With all draining devices for vacuum cookers commonly used in practice the disadvantages arise that, on the one hand, the Push rods and so on. Force to be used to press and release the closures - especially with large dimensions of the closures - becomes very large and the individual Construction parts become very difficult, and on the other hand the mass to be cooked is cooled on the walls of the closures, also the more, the larger the closure has.

In the arrangements according to the present invention, it is on the sealing surfaces acting force an elementary pressure; the same grows with the square of the increasing Dimensions of the closures. .

This force can be steam or any gas or water pressure. Usually and most expediently one will use steam, in which case that of the cooking apparatus facing surfaces act as heating surfaces.

In the accompanying drawings are various embodiments of these locking devices brought to the display. .

In FIGS. 1 and 2, two arrangements of such a closure device are drawn, in which the closure organs are designed as flaps. Both figures show longitudinal sections of the lower Theiles a Vacuumkpchapparates represents and only in, that differ in the arrangement of Fig. 1, a separate housing A for the two arriving for application Abschlufsklappen B and JB ₁ is present, while in the arrangement of Fig. 2 this housing A is formed by the double floor .des Vacuumkochapparates itself.

The flaps B and S ₁ located in the housing A rotate around the shafts C and C ₁ .

The weight of the upper flap B is just balanced by a weight D, while the counterweight D ₁ for the lower flap B ₁ is so much heavier that the latter opens by itself as soon as it is not pressed against the sealing surface by any pressure will.

The flaps B and B ₁ hang loosely at E respectively. E ₁ in two levers, which are stuck _{on shafts C and C 1.} The brackets m and M ₁ are intended to prevent flaps B and B _{1 from turning over.}

If steam (or another liquid or gaseous pressure medium) is allowed to enter the housing A with the flaps B and B ₁ closed, the tension of the pressure medium presses both flaps firmly against the sealing surfaces, the seal being made by interposed rubber rings g and g ₁ takes place. If the pressure medium used is released from the housing A after boiling has ended, the lower flap B ₁ opens automatically. At the same time, an air tap / of the cooking vessel connected to the same is automatically opened.

Is then penetrated a sufficient amount of air into the Vacuumgefäfs, the Füllmassesäule located above the upper valve flap B also presses the flap B and carried out the Ausfliefsen the mass by the previously free lower gröfsere opening. The opening of the lower flap B ₁ and the air cock / can also be done by the person operating the device.

In Fig. 3, 4 and 5 a modification of this closure device is shown in longitudinal section, horizontal section and cross section, in which the closure itself is designed as a slide. The two locking disks B and B ₁ with the rubber rings g and g _x are here also pressed on by steam or another liquid or gaseous pressure medium. After the discharge of the pressure medium from the valve body A, and after the air dilution has stopped in the Vacuumgefäfs, the upper disc B pushes from its seat and lifts by means of a lever translation h H _1, the lower disk B _1, after which the whole in the housing A sliding sliders on planed strips can be pulled away. The space between the two panes B and B ₁ is protected from the penetration of the filling compound by a protective sheet s.

Another modification of this closure device is shown in longitudinal section in FIG. 6, in which the upper closure is constructed as a vertically guided valve piston. The steam or the pressure medium used otherwise presses - let into the housing A - both the valve piston B for the upper closure and the loaded flap JB ₁ for the lower closure. After the pressure medium has been released, the weight D ₁ lifts the flap B ₁ ; At the same time, the air cock /, as in the arrangements in FIGS. 1 and 2, is opened either automatically by the flap B ₁ or by the person operating the apparatus. As soon as the pressure equalization has occurred, the valve piston B. is lowered. The counterweight D connected to the latter only has the purpose of bringing the piston B into contact with the sealing surface before the pressure medium is let in. The same can also be used to open the upper closure by the valve piston B when the lever carrying this weight is rotated around the point ρ by means of the driving rod η , since the weight D then acts vertically downwards and pulls the valve piston B off its seat.

Claims (1)

Patent claim: A closure device for vacuum vessels, in which two closing elements (BB ₁ ) , designed as flaps, slides or valve pistons and arranged in a housing (A) under the vacuum vessel, are opposed by a pressure medium (steam, water or gas pressure) introduced between them Directions pressed and after releasing the pressure medium either by counterweights or by the pressure of the weight on the upper closure after removal of the air dilution in the vacuum vessel or by the. Machine operators. For this purpose 2 sheets of drawings.