DE7900605U1 - Device for generating steam and hot water - Google Patents

Description

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GERMAN GOLD AND SILVER SCHEIDEANSTALT FORMERLY ROESSLER 6000 Frankfurt / Main, Weißfrauenstrasse 9

Device for generating steam and hot water.

The invention relates to a device for generating steam and hot water, in particular for dental technology Purposes, essentially consisting of an electrically heated pressure vessel filled with steam and hot water and an extraction device for the steam and the hot water.

Especially for the cleaning and cleaning of soiled models, steam and Hot water is required, which is generated in appropriate devices. Such devices are general from an electrically heated pressure vessel for heating water and producing steam and one Extraction device for the steam and the hot water.

There are devices known that work with distilled water and where constant during operation

According to the invention, this object was achieved by that an additional water storage tank is arranged in terms of level above the pressure vessel, which over a line and a valve with the pressure vessel and the water network and another line and Valve is also connected to the pressure vessel.

Water needs to be refilled by hand. Because of the>

I use of distilled water and the um- |

Consequential refilling, these devices are very on- |

agile. * I

^

Furthermore, cleaning devices are used that f

can be connected directly to the water network.

However, these devices have the disadvantage that the

Working pressure in the boiler and thus also the working |

pressure of the generated steam is limited by the pressure of the ft'assernetz. Such devices therefore only supply steam pressures of a maximum of 2 bar. This operating pressure can be increased by installing an additional pump, but these pumps are subject to increased wear subject.

It was therefore an object of the present invention to provide a Device for generating steam and hot water, in particular for dental technology purposes, im essentially consisting of an electrically heated

pressure vessel filled with steam and hot water and an extraction device for the steam and hot water, that can be connected directly to the water network and also with no easily wear-and-tear additional pumps higher operating pressures should work.

The figure shows schematically an inventive Device in an exemplary embodiment.

The device consists of a water storage tank (6), which is connected via * a 3/2-way solenoid valve (4) and a line (8) is connected to the pressure vessel (7). In addition, the water storage tank (6) has another, electrical one 2/2-way solenoid valve (5) connected in parallel to the 3/2-way solenoid valve (4) and the line (9) with the Pressure vessel (7) in connection.

The level of the water storage tank (6) must be above the steam boiler (7). The valve (4) in the unswitched state connects the water storage tank (6) to the water network (l) and at the same time blocks the Connection to the steam boiler (7). The water thus flows

via a water softener (2) and a check valve (3) in the water tank (6). One line (8) on the storage base (17) 1 is preferably the other Line (9) attached to the storage ceiling (18).

The steam boiler (7) is equipped with a heater (10), a temperature sensor (13) and a level sensor (14). The heater (10) evaporates water up to a pressure P ₂ , which is greater than the water network pressure p. is.

Via the temperature sensor (I3) the heating (lO) regulated and the water level in the steam boiler (7) is checked via the fill level sensor (14). Via a solenoid valve (ll) Steam can be extracted for cleaning soiled objects. The mixing nozzle

³ ^ (12) is connected to the water network (l) via the valve (15) and the steam chamber of the pressure vessel (7).

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This means that hot water can also be used for cleaning by operating the two valves (15 and 16) can be removed.

The control and regulation of the device takes place via a logically linked electronics.

If the level in the steam boiler (7) is not reached, the two solenoid valves (k and 5) switch and establish a connection between the steam boiler (7) and the water tank (6). There is thus a pressure equalization between the steam boiler (7) - pressure p _g and the water storage tank. The steam boiler (7) is filled by the geodetic height difference between the steam boiler (7) and the water storage tank (6). The solenoid valves (4 and 5) are switched over via a timing element in the electronic circuit, so that the connection between the steam boiler (7) and the water tank (6) is closed. The steam in the water tank (6) condenses and a vacuum is created. This means that the water storage tank (6) can be filled with water again. An additional vent (19) can advantageously be attached to the water reservoir (6).

The device according to the invention has no wearing parts, such as pumps, and therefore has a long service life and low repairs. Besides that you can use this to generate high operating pressures of 5 bar and more.

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5 The steam boiler (7) and the water storage tank (6) can also form a unit with an integrated 3/2-way valve can be combined.

Frankfurt / Main, December 13, 1978

Dr.Br.-Egg 35

Claims (2)

• · · · · Ίΐ 'J Degussa φ' fi to the German Patent Office, Munich Date 16.9.1980 • · «■ New claims" Device for generating steam and hot water " 1. Device for generating steam and hot water, in particular
for dental technology purposes, essentially consisting of an electrically heated pressure vessel filled with steam and hot water and an extraction device for the steam and hot water, characterized in that an additional water storage tank (6) is arranged above the pressure vessel (7), which over a line (8) on the storage floor (17) and a
Valve (h) is connected to the pressure vessel (7) and a water supply line (1) and via a further line (9) on the storage tank ceiling (18) and valve (5) is also connected to the pressure vessel (7). 2. Device according to claims i to 3, characterized in that an additional vent (19) is attached to the water reservoir (6).