DE6945022U - STEAM GENERATOR WITH CONTROL DEVICE FOR THE BOILER WATER LEVEL - Google Patents

Description

Reinhardt Veit ouoi Laisach £ j), HOV, 1961

Bügelteclvnik KG Schi.11 vstr. 7th

G / o.; O / Vt

Steam generator with koi. ^ rolling device for the boiler water level

The indication refers to a steam generator for steam-powered devices for processing of Textiles, in particular high-pressure steam generators for steam irons and steam guns, consisting of e. on the bottom m: t an electric heating set equipped "" Lei :, partially water-filled dam boiler, as well as oil connections for steam consumers and wasters, di. j-.v / eils over Valves with the supply lines to the fuel consumers and the water source.

Lei steam generators of this type are required not to allow the water level in the .Dampfkessel on the one hand to drop below a minimum value a and, on the other hand, not to let the water level rise above a maximum value. If the water level falls below a specified minimum, there is a risk of destruction of the electrical heating system on the floor. If, on the other hand, the water level rises above a specified maximum value, then the boiler room, which represents the steam accumulator and is not occupied by the water, becomes too small in terms of sufficient steam supply for the connected steam consumers. The proper operation of the steam generator therefore requires a control device which, in the simplest case, can consist of a water level indicator with a mark for the maximum permissible and the minimum required water level.

, .ie die rraxis zei ^ t, is enough; one such simple oil barrel standjaiizeige for the guarantee of the operational safety: such a steam generator ε n.ici. - the end. For this it is necessary that the v. Borschreit aes maximum Vas ε erstands s or falling below the minimum '..Water level the Ledienun ^ spersoi.c .: aui visual and / or acoustic, .ege signaled. '. irc l principle ".. can here electrical üOr.cCi. to av.-eiiduri ^ ^ el & iigen, which are inserted into the boiler vjc-ri on an electrical circuit close l> zv. interrupted as soon as the probes with the boiler water ir ; Contact cork, as extensive; extensive studies have shown, the measurement accuracy achieved with such electrical probes is: .inadequate.

The firing is based on the task of a steam generator with control device of the type described in the introduction for signaling that a limit has been exceeded of the water level in the steam boiler to provide a solution that enables an exact response with a simple design.

This task we> .i. solved according to the innovation in that the electrical control device has two rod-shaped, at their lower free 3 end hook-shaped upwardly bent electrodes, which protrude from above into the boiler with different lengths given by the water level limit values and are designed so that an electrical contact was between a or both electrodes and the kettle is only present when the tip of the hook is immersed in the kettle water.

The innovation is based on the essential knowledge, that when using probes representing straight rods

'On the one hand by the "\ n" draining condensate

and on the other hand by the formation of calcium deposits on the free lower end a contact of the probe with the boiler via the Wasιer already take place at a water level can, which is significantly below the free lower end of the probe. Due to the hook-shaped training of the lower end of the electrodes according to the innovation 1st

such a water level falsification by condensate and limescale formation prevented.

The electrodes are expediently metal rods, which apart from < the tip of the hook is encased in an insulating material.

A tube shrunk onto the electrode rods, preferably an Ethylene Fr. opylenschlauch read out.

j Since the electrodes are exposed to a relatively high temperature

'. is set, it is advisable to additionally glue the insulating tube that is shrunk onto the electrode rods to the electrode rods.

, In a particularly preferred embodiment according to the new

i. tion are the electrode rods in the boiler wall in

a screw bushing designed as a clamping sleeve is supported and the insulating jacket is in the area of the

\ Reinforced clamping sleeve. To avoid corrosion by

the boiler water or boiler steam, it is expedient to use stainless steel, preferably chrome-nickel steel, as the material for the electrode rods. In an equivalent, but cost-saving embodiment , the electrode rods are made of brass and are in

69-15022

Provided the area of the hook tip with a corrosion-resistant metallic coating, preferably a chrome layer.

The high achieved with the electrodes after the renewal ./assstandsmeßgenauigkeit gives the possibility of the Control device which serves as a measuring transducer, in addition to a water level control device.

If the water source is a water storage tank, so can this can be done in a simple way that in the connection line from the "/ water storage tank" .lter to the boiler connection for the water supply one behind the other an electric water pump controlled by the control device and a check valve are arranged.

Is the water source through dat. Local water supply network given, the automatic water level control can be activated bring about in a simple manner that zv.J. -schen the water source with a sufficient water pressure and the boiler connection for the ',.' a solenoid valve controlled by the control device, possibly in series with a -iückschla_ventil, arranged is.

On the basis of one shown in the drawing dc.r for example the iieuerun should ;; will be explained in more detail; i. Indicate in the drawing

Fi ₀ . 1 the schematic "representation of a steam generator

with control information after de_- l; 'euerung, ii "'i;' :. 2 a ^ l lectr ^ de. · η-- · .cn eier IVeuerun ...

ti

ft «suffered · ··

1 «tt r 9 9

- 5 -

The steam generator according to FIG. 1 consists of a pressure vessel 1 which is partially filled with water and an electrical heating set 2 on the bottom, which is connected to the electrical power system via a contactor 4. The sensor of the control device 3 for the maximum and the minimum barrel level in the pressure vessel 1 consist of two rod-shaped electrodes 5 and 5 ', that is, inserted into the pressure vessel from above via a screw connection 6 and with their free, bent over hook-shaped land 7 in German .. armchair inside. Lodi ^ lich d ^ e hook tip _- c :. . ·. ..troden i> and 5 'is i ^r : i Cinn ~ of an oil.-trisc ..'- · -.c.ta.ites with the pressure vessel ~ over from _ ... containsc.ee ater not λ on Isol_ r-iateri ^ i ui .. eiit ... lvie shorter. , le: itr ..de -j , erv:: ht de. ..a :: i:; ia ". zui ^: .lcsi [; eri '..ε rsex'stand and the lär er .electrode b ' den minimal luitissi ^ en a? se: stanc. ird ^ - ^ r Liinime.e ./a^serstana -j untf-'se: r_. Cen u:. Ccait ae ~ - noritakt zyrisc ^ er. Der ce. '. - d ·' üruckl-.esse "', ioe: c ε ... ssc-r unte d in .., t "^ t die ^ ontrollai.: c 1 'aui. In j ^.: .eiCi r",.' eise leuc- "ö. C- ■: i'.on ^ r ^ ll. .u ^ e ~ j ' ^A c.er _Λ .οι. "Ro_3 ii. ic .tu. , 5 on,

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the manifold 13 connects. The one branch the manifold 13 is provided with the shut-off valve 14, through which the boiler water is drained if necessary can be. The other branch of the pipe branch 13 is connected to the electric water pump via the check valve 15 16 connected, which in turn is connected to the water storage tank 18 via the pipe 17.

Vvie .cig. 1 recognizer, lets, is the control device here 3 with electrodes 5 and 5 'in connection with the electric water pump 16 to an automatic water star control device expanded by the fact that the 'asserpuuipe 16 from cer control device 3 over the Jlektrooen 5 Ui.d 5 'is controlled. The control takes place in the '/ ice that when the water level falls below in the pressure vessel 1 umer the height of the hook tip δ the Liektrvde 5 'switched on and only switched off again when the cak tip ο of the electrode 5 over the .asser with the / change of the; Pressure vessel 1 makes contact.

. When u. Τ-constructive ■ ■ ..inzelheitev errennen lassenaen embodiment SFON · an electrode according to Figure 2 is lit with 5 άι ", ν P-Uo Chromni ': liulctahl bestenence Pa ra lle l; ^ ^ rode Istab be-L: i : .ichnet Liessr _:. '] OiCtrodenstab st ... up to the tip of the hook 8 unc the ^f provided with a screw thread 8 inschlußende λ -in a> ■ thy] en-propylene JscT lerε ^ hlaucb 19 surrounded.... , the au .. ¹ the lle-.trodenstau ft 5 "aufgesclirum ^ and bonded with this ibt. In the "kingdom of the connecting end 8 'the J soliei'scr.iaucn ve'" is strong:. 'Kt, namely in l'Orm des over the Isoj-ierscii] uch 1 ^ over _t ^r ; ezog ^ ne; i further Isol- ^: orschleuchst ^:. "; ks? .. aus dr. leicnen uatt ^ 'ial. la area of this I ^ oil:. ■ ·: '.l.'S.uc : Jc :: 8 is c .: Le ■., Io .- 'troQ.ei: o. A S

- 7 -

Sleeve 21 let in with clamping nut 22, which is thereby simultaneously designed as a screw feedthrough that it has an external thread 23 at its lower end, which is delimited by a hexagon 24 at its upper end. With the help of the thread 23 and the shear bar 24, the clamping sleeve 21 is screwed together with the electrode into a corresponding threaded opening in the wall of the pressure vessel 1 on the upper side thereof as shown in FIG.

9 claims for protection
2 figures

Claims (1)

Protection claims Steam generator according to claim 1, characterized gekenmeichnet, da3 LLI e il ^(kx de.- (.>, -J ¹⁾ ^ etallstäbe are up c.uf di Fakens Itze (B) in front of an insulating material (19, 20) tc ^ L c sine. ~ -j _: electrode: 'iSticks au- · I''O '■■ ..' ^i:. . C_ ^ S 0i. "Ic.UCii J. St ° % j ν / ίο Steam generator for steam-operated devices for processing textiles, in particular high-pressure steam generators for steam irons and steam guns, consisting of a steam boiler, partially filled with water, equipped with an electric heater on the bottom, as well as boiler connections for steam consumption- ¹ and V / a ss er supply, each of which is connected to the supply lines to the steam consumers and the water source via valves, as well as a control device for the water level in the jar.ipikessel, characterized in that the Turkish roller device (3) has two rod-shaped hooks at their lower end above bent electrodes (p, ö ') to V / eist which protrude from the top in the pressure vessel (1) with ^ nzwerte by the Wasserstandsgr predetermined different length and ■ i are formed so AASS an electrical contact _Lj abe washed one or both Electrodes and the pressure vessel only with in j.as boiler water gee ^ hook tip (8) voi .landen is. 4. Steam generator according to claim 3, characterized in that the shrunk-on insulating tube additionally with is glued to the electrode rods. 5. Steam generator according to one of the preceding claims, characterized in that the electrode ^{rods (5 n} ) are held in the boiler wall in a screw bushing designed as a clamping sleeve (21) and herebe ^. the insulating jacket (19, 20) is reinforced in the area of the clamping sleeve. 6. Steam generator according to one of the preceding claims, characterized in that the electrode rods (5 ") made of stainless steel, preferably made of chrome-nickel steel, exist. 7. Steam generator according to one of claims 1 to 5, characterized in that the electrode rods (ir ") made of brass exist and i: a area of the hook tip (8) a corrosion-resistant metallic coating, preferably a chrome layer. ü. Steam generator according to one of the preceding claims, b ~ i of the water source a V / assei storage tank ΐε, characterized in that in c r connecting line from the V. water storage compartment (18) to the boiler connection (12) fU. the water supply one after the other from de :. Lonurolling device (5) controlled electrical 'water pump (16) and a check valve (15) angec. χαίΘχ is » -1C- Steam generator according to one of Claims 1 to 7, characterized marked that in the connection line between those with a sufficient 'barrel pressure Viasserquelle and the boiler connection (12) for the water supply from the control device (5) controlled solenoid valve, possibly in series with a check valve, is arranged.