SE432818B - Muffler designed to attenuate water noise in sanitary fittings - Google Patents

Description

"'! öU32Ü6'7. _ 2 Further embodiments are set out in the subclaims.

With the embodiment according to the invention, the entire sound-absorbing device can fit in the connection socket for a mixer valve. In particular, several flows, such as hot and cold water, can be accommodated in one and the same device.

Another advantage of the invention is that it is possible to install a sound-absorbing element in the mixer valve from the front and consequently a worn-out element can be replaced without the entire mixer connection having to be mounted away from the washbasin.

Reinforcement cams can be arranged on the outside of the element to ensure a seal between the upper end of the element and a cover plate and between the lower end of the element and the bottom of a blind heel in the connecting base. In addition, cavities, which are very suitable from a sound attenuation point of view, are formed between the inner surface of the blind heel and the mantle surface of the element. A preferred embodiment of the invention is shown in more detail below with reference to the accompanying figures.

Pig. 1 shows a single-health mixer partly in section.

Pig. Fig. 2 shows a section along the line A-_B in Fig. 1. e - - Figs. 3 shows a longitudinal section of a sound-absorbing element, Pig. Fig. 4 shows a section along the line C-D in Fig. 3.

A single-health mixer 1 according to Figure 1 has a connection base 3 with a blind heel 5.

The base 3 is inserted in a suitably shaped heel in a washbasin and read on the underside by means of a clamping nut. Hot and cold water are supplied through lines 9 and 10, which are soldered to the bottom of the base. The wires protrude slightly into the blind heel S, whereby the intermediate piece (the sound-absorbing element) 2 is fixed. The latter is provided with passages 4.

Reinforcing cams 8 are arranged on the outer surface of the intermediate piece 2, whereby this, which is suitably made of rubber, can be clamped between the bottom 11 and the cover plate 6 which is screwed on by means of a clamping nut 12. The two ends of the intermediate piece 2 have flanges 7, which are in contact with the inner wall of the blind heel 5. The heel spaces between said wall and the mantle surface of the intermediate piece 2 reinforce the sound-absorbing effect and can be filled with air or some other medium.

In the embodiment shown, the reinforcing cams 8 surround on the one hand the periphery of the intermediate piece and on the other hand run axially and symmetrically opposite each other. The combs can of course also have a different design in order to achieve some special sound-absorbing effect. Metal reinforcements can also be embedded in the elastic material of the intermediate piece for this purpose.

Claims (1)

3. 3 7803206-7 PATENT CLAMP Silencer intended to attenuate water noise in sanitary fittings, consisting of a piece of material made of permanent elastic material inserted in the water pipe, characterized in that the elastic piece (2) is arranged in a cylinder ( 5) in the attachment base (3) to a single-height mixer, wherein the medium piece (2) is fixed with the aid of a cover plate which abuts against its upper end surface. A muffler according to claim 1, characterized in that the end portions of the body piece (2) have cylindrical fins (7) which abut the inner surface of the body member (5), the rest of the minor diameter of the body piece (2) having a substantially smaller diameter. Muffler according to claims 1-2, characterized in that the mantle surface of the metal piece (2) is provided with reinforcement chambers' (8).