DE202005015270U1 - Drinking water flavour mixer fitting has a shut-off valve with a pressure-reduction fitting and back-flow prevention valve - Google Patents

Abstract

A drinking water supply pipe terminates in a fitting with an inlet for a flavouring agent and a mixing assembly. The mixing assembly discharges to a flavoured drinking water outlet. The fitting incorporates a shut-off valve with a pressure-reduction fitting and back-flow prevention valve.

Description

technical area

The Innovation relates to a connection fitting for Connect of devices for adding additives to drinking water to a drinking water system. Such additives can be gases, such as oxygen or carbonic acid. But there are also additives that affect the drinking water in taste or color, e.g. red Strawberry flavor or the like. With such additives can from drinking water lemonade, oxygenated water etc. produced become.

Equipment for mixing of additives to drinking water are common independently from the drinking water outlet. The drinking water is taken from a tap and fed to the device. It is desirable such a device firmly connected to the drinking water installation. Then the water can be added Need with the accessories be taken directly without previously untreated water supplied must become.

adversely in a permanently connected device, however, it is that the mixing ratio changes with the pressure fluctuations in the drinking water connection. It is still due to of standards in many countries not allowed, devices without appropriate fuses against unwanted reflux firmly to a drinking water system to join.

epiphany the innovation

It The object of the innovation to create a connection fitting, with the in a particularly compact, easy to maintain and cost effective way mixer of the type mentioned firmly connected to the drinking water installation can be.

Innovation is the Task through a connection fitting solved, containing a housing with an inlet and an outlet, arranged on the inlet side Stopcock and one downstream arranged from the stopcock pressure reducer, wherein between the Pressure reducer and the stopcock arranged a backflow preventer is that for a flow opens in the direction of the pressure reducer and between the outlet and the pressure reducer another backflow preventer is arranged, which is a flow in the direction of the pressure reducer blocks.

A such connection fitting allows it, the mixer e.g. for maintenance purposes. For this purpose, only the stopcock getting closed. But the stopcock also fulfills the function that the downstream pressure reducer and backflow preventer for maintenance purposes can be removed. By using a pressure reducer is the at the mixer applied pressure maintained at a defined, selected level. Thereby is a constant mixing ratio of drinking water with the additives guaranteed.

The Use of two backflow preventers provides a double-backflow preventer system which of the usual Standards for the connection of such equipment Fulfills.

Of the Stopcock can be designed as a ball valve.

In A preferred embodiment of the invention is the pressure reducer formed like a cartridge and arranged in a connecting piece of the housing. Then the pressure reducer can easily when closing the stopcock removed and serviced or replaced. In another Design is the housing essentially formed by an elongated tube to which laterally formed a two-piece connecting piece for the pressure reducer with a first part forming an inlet-side transition into the tubular housing, in which the outlet-side backflow preventer is arranged and the second, outlet-side part of the recording for one bullet-shaped Pressure reducer forms. If the pressure reducer the connection piece is removed, the inlet side Backflow preventer at the same time being repaired. He is over the first part of the common connecting piece more easily accessible, as if he were right in the tubular casing would be arranged.

refinements the innovation are the subject of the dependent claims. An embodiment is explained in more detail below with reference to the accompanying drawings.

Short description the drawing

The einizige figure is a section through a connection fitting with shut-off valve, pressure reducer and backflow preventer.

description of the embodiment

In the attached figure is a generally with 10 designated connection fitting shown. The connection fitting 10 is installed in the piping for drinking water between a water connection and a mixing device (not shown). The inlet of the fitting located on the water connection 10 is with 12 designated. The outlet located on the side of a mixer is with 14 designated.

The fitting 10 comprises an elongated, substantially tubular housing 16 , On the inlet side is the fitting 10 with a ball valve 18 shut off. The ball valve 18 is with a handle 20 actuated. By turning the handle 20 becomes the ball 22 turned. Then he lies in the ball 22 lying passageway 24 transverse to the flow direction and locks the valve. In the picture is the opened tap 18 shown.

The housing 16 points downstream behind the stopcock 18 a two-piece connecting piece 26 on. The connection pipe 26 is substantially V-shaped and has two legs 28 and 30 on. In a first, upstream leg 28 is a backflow preventer 32 arranged. In a second, downstream leg 30 is a pressure reducer 34 arranged. The backflow preventer 32 opens in the direction of the pressure reducer. The water flows from the stopcock 18 through the backflow preventer 32 laterally to the pressure reducer 34 , The pressure reducer 34 is a cartridge-like design and in the connecting piece 30 plugged in. Otherwise, it is a pressure reducer of conventional design, which need not be further described here. From the pressure reducer 34 the water flows through the second leg 30 of the connecting piece 26 back into the elongated, tubular housing part 16 , in front of the outlet 14 is another backflow preventer 36 arranged. Also this backflow preventer 36 blocks water flowing back from the outlet in the direction of the pressure reducer and opens in the direction of the outlet.

At the outlet 14 a device for adding additives to drinking water can be connected (not shown). Due to the use of the pressure reducer is on the device with open stopcock 18 always the same pressure. This causes an always constant mixing ratio in the removal of added drinking water with additives.

To Maintenance purposes of the admixing device, of the pressure reducer or the backflow preventer the stopcock can be closed and the components removed. The arrangement realizes a double backflow preventer system, like it like like a pipe separator system from the standards for permanent connections increased Contamination risk is required.

The Arrangement is particularly compact and economical due to the multiple functionality.

Claims (4)

connection fitting to connect of devices for adding additives for drinking water to a Trinkewassersystem containing a housing with an inlet and an outlet, an inlet side arranged Stopcock and one downstream arranged from the stopcock pressure reducer, wherein between the Pressure reducer and the stopcock arranged a backflow preventer is that for a flow opens in the direction of the pressure reducer and between the outlet and the pressure reducer another backflow preventer is arranged, which is a flow in the direction of the pressure reducer blocks. connection fitting according to claim 1, characterized in that the stopcock as a ball valve is trained. connection fitting according to one of the preceding claims, characterized in that the pressure reducer is formed like a cartridge and in a connection piece of the housing is arranged. connection fitting according to claim 3, characterized in that the housing substantially of a elongated tube is formed, which laterally a two-piece trained connecting piece for the Pressure reducer is formed, wherein a first part of an inlet side transition in the tubular casing forms, in which the outlet-side backflow preventer arranged is and the second, outlet side Part of the recording for a cartridge-shaped Pressure reducer forms.