DE3501008A1 - Pressureless continuous-flow steam generator with a preheater - Google Patents

Abstract

A pressureless continuous-flow steam generator with a preheater, especially for supplying steam to industrial irons and steaming appliances in the textile industry, is provided. This continuous-flow steam generator comprises essentially a relatively small evaporation space of approximately 50 cm<3> which is open to one side by means of an exhaust-steam pipe and in which an electrical heating, for example a heating cartridge, with a relatively high heating capacity of approximately 1 to 2 kW is arranged and via which an atomiser-nozzle device sprays on a quantity of water which corresponds to the heating capacity and which is converted into steam and discharged.

Description

Description:

The invention relates in particular to areas of application of the Textile industry and was specially conceived for supplying steam to industrial irons and steaming devices that do not require particularly high steam outputs will.

In the case of continuous steam generation, in contrast to the usual Low pressure steam boiler that generates steam at the same moment when it is needed will. Steam boilers have to be heated constantly and put under pressure.

Microswitches are installed in industrial irons and dampers, which, when actuated, open a solenoid valve, causing the steam to come out of a pressurized state standing kettle; Via a connection hose for consumption in the iron or damper is directed. Here the rush is not continuous, but only for a short time decreased at different intervals.

This type of steam take-off is also based on the principle of the invention, to generate the required steam only when it is needed.

In the once-through steam generator, however, as a result of the actuated Steam button e.g. on the iron heater (2) and asse feed (7, ß) switched on at the same time. Due to the high heating output of approx. 1.5KW in the smallest of spaces, oer Steam chamber (1) every second about 0.5-l milliliters of water are converted into steam, without the heating coil getting an excessively high temperature, since it is constantly sprayed with water and thus cooled. after switching off the heating (2) the spraying process also ended with a slight delay.

Since the steam space (1) passes through the steam discharge pipe (6) without a shut-off If valves or other closures are always open, the steam can be fed through a hose connection can be led directly to the soleplate, which is open at the bottom.

Thus, the device described in the invention can be used as a pressureless steam generator device " are designated.

Since the water atomized via the nozzle (3) directly on the exposed When heating wires are sprayed, the evaporation takes place in seconds with extreme Effectiveness and high efficiency. Because the water used is distilled or demineralised is, exists due to the low conductance and the low winding voltage no risk of short circuit.

The steam chamber (l) is thermally highly insulated from the outside (9), so that hardly any heat loss is given off to the environment.

The water supply pipe (5) is either anchored by the outer wall (13) or runs directly through the steam chamber (1), so that the water before it enters the Nozzle (3) has already been preheated.

Flow-through steam generators according to the invention referred to are instant ready for operation and provide the steam immediately after switching on the heating register (ll) and Xer water supply available.

While in steam boilers or other known generation systems a Wait for a preheating time of 15 minutes.

The production price of pressureless once-through steam generators is Far below the prices of steam producers in use up to now.

The method of pressureless flow steam generation is guaranteed high level of safety with regard to the risk of explosion and achieves optimum efficiency. It is not subject to any special approval regulations of the TÜV.

Claims (6)

Pressureless flow @ steam generator with preheater claims: 1. Pressureless once-through steam generator characterized in that in one extremely small evaporation space (l) of only approx. So cm, the one on one side through an exhaust pipe is open, an electric Heizug (heating cartridge) with a relatively high heating output (1-2kw) is housed, via which an atomizer nozzle device one of the heating power the appropriate amount of water is sprayed on, which is immediately converted into steam. 2. Pressureless once-through steam generator, characterized in that the electrical heating as a compact heating register (2) with bare, uninsulated heating wires (12) or heating coil on a correspondingly designed hollow insulating body w meander or helically in one or more levels arranged one behind the other on the smallest Room are housed. 3. Pressureless once-through steam generator according to claim l.u.2. through this characterized in that an atomizer nozzle (3) directly on the water to be evaporated the bare heating wires (12) sprays and at the same time or after a short pre-spraying time the heating current is switched on and the heating current is switched off at the same time or with a short post-spray time, so that the steam required is only available for as long generated as it is needed. 4. Pressureless continuous steam generator according to claim 1., 2., u.3. through this characterized in that a pipe socket (6) is attached in the steam space (l), to which a steam hose is connected from the outside, which leads to a consumer (e.g. steam iron) in which the steam without significant back pressure, i.e. practically without pressure to the Processing arrives 5. Pressureless once-through steam generator according to claim l, 2.3.u.4 characterized in that the water to be evaporated via a pipe (4, 5) is fed to the atomizer nozzle (3), which is attached to the outer wall of the steam chamber (l3) installed or passed directly through the steam chamber (l) so that the heat loss stored therein is the water conducted into the atomizer nozzle (3) is preheated. 6. Pressureless once-through steam generator according to claim l2,34, u. 5. characterized in that instead of resistance wire for the Heating register (2,12) several commercial high load resistors in the corresponding Arrangement can be used.