JPH02221800A - Vacuum drain exhauster - Google Patents

Abstract

PURPOSE:To exhaust drain inexpensively and efficiently by installing a drain tank storing the drain, a drain valve connecting a vacuum vessel to this drain tank, a vent valve, a drain connection valve for exhausting the drain, a steam valve, an electrode rod sensing a drain level or the like. CONSTITUTION:Steam is taken in from a steam valve 5, while air is exhausted out of a drain valve 6 and the air in the inner part of a drain tank 2 is exhausted. Next, these valves 5 and 6 are closed, and a drain valve 3 and a vent valve 4 are opened, connecting a vacuum vessel 1 to the tank 2. Drain produced in this vessel 1 is gathered in the tank 2 via the valve 3. When a specified drain level is sensed by an electrode rod 7, the valves 3 and 4 are closed, and the steam is taken in from the valve 5, setting pressure in the tank to be more than the extent of atmospheric pressure, and the drain in the inner part of the tank 2 is exhausted out of the drain valve 6. When exhaust is performed up to a specified level by the electrode rod 7, the valves 6, 5 are closed, and the valves 3, 4 are opened and the stored again. Repeating the above operations, drain exhaust is thus intermittently performed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is a device used to control the temperature under vacuum in a jacketed steam oven mainly used for cooking food. It can also be used for draining condensers under vacuum, etc.

(Conventional technology) Conventional technologies include a method in which condensate accumulated under vacuum is discharged under atmospheric pressure after each process, and a method in which condensate is discharged using a vacuum pump, etc. It was not an effective method when used for a long time because it placed a load on the pump etc.

(Object of the invention) In view of the problems pointed out in the above section of the prior art, the present invention
To provide a device that can be used continuously without introducing air into a vacuum container, and can efficiently discharge condensate at low cost.

(Means for Achieving the Object) As a means for achieving the above object of the present invention, there is provided a drain tank for storing drain, a drain valve for connecting the vacuum container and the drain tank, a vent valve, and a drain valve for discharging the drain. It is equipped with a steam valve, an electrode rod for sensing the drain liquid level, etc.

(Function) Since the condensate is discharged at the pressure of saturated steam, no air is mixed into the vacuum vessel, and in order to intermittently discharge the condensate generated in the vacuum vessel, the vacuum vessel is continuously operated. Available for use.

(Example) Embodiments of the present invention will be described with reference to the following drawings.

First, in order to discharge the air inside the drain tank 2, steam is introduced from the steam valve 5 and the air is discharged from the drain valve 6. When the discharge of air is finished, the steam valve 5 and the drain valve 6 are closed. The drain valve 3 and the vent valve 4 are opened to connect the vacuum container 1 and the drain tank 2. Drain generated in the vacuum container passes through a drain valve 3 and accumulates in a drain tank 2.

When a certain drain liquid level is detected by the electrode rod 7, the drain valve 3 and the ventilation valve 4 are closed, and steam is introduced from the steam valve 5.
The pressure inside the drain tank 2 is made equal to or higher than atmospheric pressure, and the drain inside the drain tank 2 is discharged from the drain valve 6. When the liquid is drained to a certain level using the electrode rod 7, the drain valve 6 and the steam valve 5 are closed, and the drain valve 3 and the vent valve 4 are opened to collect the drain again.The steps 9 and above are repeated to intermittently drain the drain. conduct.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the present invention. 1...Vacuum container 2...Drain tank 3...Drain valve 4...Vent valve 5...Steam valve 6...Drain valve 7... Electrode rod 8...Pressure gauge 9...Partition pulp

Claims (1)

[Claims] The condensate generated by condensation of steam inside the vacuum vessel is stored in a tank under the same pressure. When a certain amount of condensate has accumulated, the vacuum vessel and the tank are shut off, and the condensate in the tank is discharged using steam pressure, and then the vacuum vessel is removed. Vacuum drain discharge device that connects with and discharges condensate intermittently.