Rotary Heat Exchanger Device

Abstract

A rotary heat exchanger device is disclosed. In an embodiment the rotary heat exchanger includes a rotary heat exchanger having a rotary heat exchanger axis of rotation, a drive motor having a stator and a rotor including a rotor axis of rotation and a housing into which the rotary heat exchanger is installed and in which the latter rotates, wherein the rotor axis of rotation and the heat exchanger axis of rotation extend coaxially and the rotor is rigidly connected to the rotary heat exchanger.

Description

[0001]This patent application is a national phase filing under section 371 of PCT / DE2015 / 000537, filed Nov. 11, 2015, which claims the priority of German patent application 20 2014 105 449.9, filed Nov. 12, 2014, each of which is incorporated herein by reference in its entirety.TECHNICAL FIELD[0002]The invention relates to a rotary heat exchanger device, in particular for use in a decentralized ventilation system with heat recovery, comprising a rotary heat exchanger and a drive motor.BACKGROUND[0003]Such a rotary exchanger device is known from DE 20 2009 009 697 U1. In this rotary heat exchanger device the drive motor is an external rotor motor, which is arranged adjacent to the outside wall of the rotary heat exchanger and the rotor thereof drives the rotary heat exchanger directly by means of a direct form-fit and / or friction coupling to the outer wall.[0004]The coupling between the outer wall of the rotary heat exchanger and rotor by means of a form-fit and / or friction coupling ...

AI Technical Summary

Benefits of technology

[0005]Embodiments of the present invention provide an enhanced rotary heat exchanger device, which in particular requires a reduced assembly cost and has increased reliability.

[0011]Such a rotary heat exchanger device also in particular involves the advantage that no coupling means which are liable to wear, such as drive belts or gear-wheels or other means for producing a form-fit or friction coupling between the rotor and the rotary heat exchanger are required. It saves complicated calibration and readjustment of the coupling means and / or drive motor.

[0012]The fact that the drive motor is no longer arranged adjacent to the outer wall of the rotary heat exchanger enables that, for a unchanged size of a housing of the rotary heat exchanger device, the diameter thereof can be enlarged, which results in a higher heat recovery and a lower pressure loss with the same air performance.

Problems solved by technology

The coupling between the outer wall of the rotary heat exchanger and rotor by means of a form-fit and / or friction coupling requires a high level of positional accuracy of the drive motor and rotary heat exchanger in relation to each other, and therefore high assembly costs.

There is also a risk that, even at low abrasion, the coupling no longer functions reliably.

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