DE8613147U1 - Flood protection, which comprises a valve assigned to a thyristor and interacts with the known solenoid valve of washing machines - Google Patents

Description

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To prevent flooding due to possible malfunctions or breakage of the inlet pipe _t through which the water generally flows into washing machines, in the prior art a collecting vessel for the water flowing below the washing machine in the event of malfunctions is arranged on the floor of the washing machine. Which ended up in this vessel

The amount of water is controlled by a float, |

assigned to a switch that controls the circuit of the!

Solenoid valve interrupts, which therefore closes and the |

The float is also mechanical |

Assigned to elements that the water inlet pipe downstream \

close so that even if the solenoid valve fails, \

to prevent flooding. ί

These and other, similar arrangements require application of rather complicated and expensive facilities. The upper end of the water inlet pipe in the washing | machine is connected to the solenoid valve. |

The innovation is based on the task of a flood |

ü To create security for washing machines that are not only 2

subjects and therefore less expensive than the known device j but is also safer and more reliable. |

The flood protection according to the new invention is essentially | Chen characterized in that in addition to the well-known \ connected to the water supply solenoid valve, a two j th thermo-electrically controlled valve is provided which is electrically connected with the traditional solenoid valve in series connection. The opening of this second "thermal valve", which is kept closed by springs when the washing machine is not working, is controlled by a shaft

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controlled, which is axially displaceable in a capsule and off the same is arranged outstanding. The capsule contains a v / ärmedshnbaren mass and is assigned to a thyristor *

The flood protection in accordance with the amendment is described below described on the basis of the accompanying drawing I. It

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Fig. 1 is a view of the flood protection contained in a two-shell housing with the second "Ther- H moventil "and the invisible solenoid valve in the closed position and

FIG. 2 shows the flood protection device from FIG. 1 with the valve open tilen.

The receptacle on the bottom of the tub to collect of the leakage water that allows a swimmer to open and close | j associated with an electrical switch used in the circuit of the traditional solenoid valve belongs to the | prior art and is therefore not shown.

According to the innovation, 1 denotes the housing shell in the drawing, in which the solenoid valve 2 is attached, which is connected to the inlet pipe 3 through which the 1 water flows into the washing machine. In the tubular s end piece 4, through which the water flows into the solenoid valve, the sleeve 5 is longitudinally displaceably arranged, which is fixed to the mushroom valve 6, which controls the flow 7 at the ring nut 8, which is rotatable for connection to the water supply. In the tubular end piece 8a of the nut 8, the sleeve 5 is displaceable in the longitudinal direction. O-rings 9 provide the seal between

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the sleeve 5 and the tubular end pieces 4 and 8a.

With 5a is a small, fixed to the bush 5 or integral with the same console referred disposed a shaft between the calibrated spring 10 and the end 11, which is axially displaceable in a sealed container containing a heat sensitive composition, such as wax, contains and is assigned to a thyristor »Container and thyristor are labeled 12. The electrical connection 13 of the group 11-12 is connected in parallel to the electrical connection 14 of the solenoid valve 2, while the two-pole line 15 is controlled by the switch which is controlled by the position of the known float associated with the known and already described collecting vessel.

At 19 the filter is the one flowing into the washing machine Water and 16 denotes a flow regulator.

The flood protection works as follows: When the washing machine is not working, the solenoid valve is on and the group known as the "thermo-electric" valve and comprising parts 2, 5, 6-11, 12 are unexcited. The mushroom valve 6 blocks the flow 7 and the solenoid valve is also closed.

When the washing machine is switched on, solenoid valve 2, the group of container thyristor, which is excited by this, opens 12 increases the container temperature due to the excitation of the thyristor, so that the shaft 11 in the position after Fig. 2 is shifted, the force of the spring 10 overcomes and the mushroom valve 6 opens so that the water over the Tube 3 can be freely inserted into the washing machine.

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; In the event of malfunctions in the washing machine, where leakage

I "" when he occurs, this water is in the one at the bottom of the machine

[ arranged vessel and as soon as the vessel

i assigned swimmer moves into a predetermined position,

I he opens the microswitch that controls the circuit of the magnetic

\. vsntils 2 and the thyristor 12 controlled. Is that mag-

If valve 2 is effective, it closes immediately and blocks it

h Remove the water supplied to the washing machine. With a few seconds

With the delay, the shaft 11 returns to the position according to FIG. 1

I back and the spring 10 leads the valve 6 in the blocking position

I ment of flow 7 back.

I should for some reason the solenoid valve 2 in open

I get stuck in position - and that's the most common cause

I of floods - actuated that in the vessel at the bottom of the

I washing machine gets water on the float and solves that

\ Open the power supply to the solenoid valve and to the

I thyristor 12 controlling microswitch. In this to-

yy: stand closes the mushroom valve 6, although with a little delay

because of the inertia of group 12, and shuts off the flow of water to the washing machine.

The rotatable locknut 8 is fastened in the longitudinal direction to the annular edges (17) (FIG. 2) of the housing 1. Around possible due to the internal pressure of the water

• To make stresses harmless, g-ind bracket 18 provided, which engage in corresponding circumferential grooves which are formed in the end piece 8 a of the locknut 8 and in the end piece 4 that leads to solenoid valve 2.

The mushroom 6 of the thermal valve has no capillary through holes and therefore opens or closes the flow 7. The mushroom is arranged counter-current to the water flow.

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net, so that he tends to open the valve even in the event of malfunctions close.

From the above description it is clear that the advantageous use of the flood protection according to the innovation, in addition to the solenoid valve normally built into washing machines, a second safety valve comprises.

The innovation was based on the illustrated embodiment but of course also includes solutions that achieve the same advantages if they are structurally different because the main feature the flood protection according to the new version consists of the connection of a solenoid valve with a "thermal valve",

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which work together in series and are excited in parallel, where- | if the power supply is controlled by a common switch which is controlled by a float, which is arranged in a collecting vessel on the bottom of the washing machine assigned for leakage water.

Claims (6)

1. Flood protection for washing machines with a known, control the water flow to the machine Solenoid valve, 'characterized in that a with the solenoid valve (2) in series arranged thermal valve (5,6-12) with a thyristor and a control
its opening against the force of at least one
calibrated spring is provided. 2. Flood protection according to claim 1, characterized in that the two cooperating valves
(2,5,6-12) are installed in a common housing (1). DEUTSCHE BANK AG HAMBURG iBLZ 200 700 00) 610055 POSTSCHECKAMT HAMBURG (BL2 200 100 20) 2620 80-201 I I · t I * t I ■ ti I · I · 4 * * Il «·« ti ttt • · t · I III l 1 t 1 1 11 ■ ■ 3. flood protection according to claim 1 or 2, characterized characterized in that the ThermoventiL (5,6-12) over an intermediate sleeve provided with ring seals (9) (5) is built in series. 4. Flood protection according to one of claims 1 to 3, characterized in that the ThermoventiL (5,6-12) a zuc.i water flow arranged countercurrently PiLzkopf (6) and an annular, through the pilot head (6) includes controlled flow (7). 5. Flood protection according to one of claims 1 to 4, characterized in that the two valves (2,5,6-12) in the longitudinal direction over a bracket (18) are connected, which is attached to the housing containing the group (1). 6. Flood protection according to one of claims 1 to 5, characterized in that the somewhat long, necessary to open and close the thermal valve Times eliminate the risk of water hammer, which are known to damage the water (4t *