Housing units for heating installations

Abstract

The invention relates to a housing unit (22) for a heater with two heating circuits, one for heating a room and the other for heating service water. The housing unit comprises a pump housing (23) for the circulation pump (8). The housing unit ( 22 ) also includes valves for switching the heating circuit and, in the installed state, has at least one connection on its rear side directly to a plate heat exchanger ( 6 ) for heating service water. An opening (29) for the return flow of room heating is provided on one side of the housing unit. A suction chamber (28) is formed in the housing unit, which is connected to the suction port (26) of the pump (8) and leads into two channels, wherein the two channels are optionally closed by a valve body (32). One of the channels, one of which leads to the pipe connection (30) for return flow, and the other channel leads to the connection (40) of the plate heat exchanger (6).

Description

technical field [0001] The invention relates to a housing unit for a heater. Background technique [0002] In order to improve and simplify the structure of heating equipment, especially the structure of water heaters designed for installation on the wall, that is, compact heating equipment, such as gas furnaces, in the prior art, the housing unit is usually composed of one or more It consists of an injection molded part of synthetic material and then incorporates (eingliedern) the required electrical, electronic, hydraulic and mechanical components. Here, such a housing unit for a purely room heating differs significantly in construction from a housing unit for a heating system with two heating circuits (Heizkreisen), one for room heating and the other for non-potable water heating The latter has, in addition to at least one circulating pump which is always present, a heat exchanger (usually a plate heat exchanger) and a reversing valve or another circulating pump. Ther...

AI Technical Summary

Problems solved by technology

[0004] A disadvantage of the housing unit described above is that the two pipe ends closed or opened by the valve body consist of separate injection molded parts which have to be incorporated into the housing after the actual housing has been produced, which means This requires additional installation costs and additional tooling costs due to additional components

A further disadvantage is that the arrangement of the electric motor on the underside of the housing unit hinders the natural pipe extension (Leitungsverlauf), in particular leads to a detour of the return pipe for room heating

The disadvantage of the housing unit described here is therefore that it has a relatively complex piping arrangement on the suction side and that the plate heat exchanger is arranged behind only in a laterally movable manner, which is in contrast to the compact design concept. conflict

The channel arrangement (Kanalführung) to the plate heat exchanger formed inside the structural unit also requires the provision of expensive and separately produced connection parts, which means more tool costs

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