DE7625179U1 - VENTILATION DUCT WITH INTEGRATED RECUPERATIVE HEAT OR COLD RECOVERY - Google Patents

Description

Dipl. Ing. Josef Mollerus
Elblingweg 11
7758 Meersburg

Ventilation duct with integrated recuperative heat or cold recovery

The present invention relates to a regenerative heat exchanger formed channel in which heat is transferred from one medium to another.

The most common type of recuperative heat exchangers are two air currents with different temperatures guided in separate, but directly adjacent channels, whereby the heat is transferred through the wall from the warmer to the colder airflow. The best known form of recuperative The air / air heat exchanger is the plate exchanger, at dam the fish and the stale air in alternating layers be guided. Glass or metal is used as the material for the plates.

The main disadvantages of the known exchangers are the relatively complex and therefore expensive production and the low level of efficiency in most of the known designs, which does not exceed 50 to 60% on average. The efficiency is defined as follows:

^t ii ^{= port air temperature before} entering the exchanger t- = fresh air temperature before entering the exchanger

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t _a i = fresh air temperature after leaving the exchanger

These disadvantages are primarily due to the fact that the exchanger is integrated as a component in a compact system and the structure, dimensions and design of the rest of the system is adapted.

The present innovation relates to a heat exchanger designed as a channel - hereinafter referred to as exchanger channel - which is simple in design and therefore inexpensive, has the flexibility of a channel system and enables an efficiency of 100 % .

According to the innovation, the object is achieved in that one of the media in flat chambers that are stacked on top of each other are each made up of

second medium fills the spaces between the chambers. Here, the legs of the chambers forming U-profiles are preferred designed so that by simply pressing them together without additional connecting elements a permanent closed Profile is created.

Such closed chambers could be relatively inexpensive as linear meter goods produced, combined into a bundle of any length at a specified distance and inserted into a channel will.

As a conclusion of the heat exchanger channel thus formed compared to the the second medium flowing around the bundle of chambers, the ends of the D-profiles according to a preferred embodiment are right-angled

crimped, the crimps blocking the channel cross-section remaining between the chambers.

An additional task is the exact spacing of the individual chambers along the channel. According to the innovation, this is achieved by inserting them at intervals on the long side Racks reached.

In the case of a heat exchanger channel designed in this way, one of the two media would be in each of the two end faces in the Enter or leave the exchanger channel, while the second medium enters via two lateral nozzles at the two ends of the channel. or would exit.

Such a ventilation duct, through the air chambers of which fresh and used air would then preferably flow in a countercurrent process, could for example be guided in a wall slot over several floors, housed in a roof structure or laid on a wall in the manner of a girder. With appropriate equipment at the ends of the Tau- Btiici -naiidxo nuiuii / C etui cj-iiiotnc itci-oc cxuc num ^ xcvvc uc- uim υιιυ- ventilation of a living room, a kitchen or a toilet can be made, which replace the usual window ventilation and thus would significantly reduce energy consumption. Simplified window designs with fixed glazing would largely compensate for the costs of such ventilation, apart from better noise protection and the possibility of filtering fresh air.

ί - 4 -

j Fig. ^R l shows a section through a heat exchanger duct according to I of the innovation. The channel with 1 and each

I because there are two nested U-profiles with 2 and 2 '

¹ marked.

Pig. 2 shows two U-profiles, the legs of which according to claim 2

are joined together to form a closed profile without additional connecting elements.

Fig. 3 shows a longitudinal section through the end of a heat exchanger channel. The U-profiles 2 and 2 ¹ are crimped up and down according to claim 3 and only the flat chambers are open towards the end. The flanging also determines the distance between the chambers.

;. Fig. Ί shows a cross section through several of two

». Profiles 2 and 2 ¹ formed flat chambers passing through

'Tooth elements 3 are held at a certain distance.

Claims (4)

Protection claims 1. Heat exchanger duct for two run in separate layers Media, characterized in that one of the media is layered one on top of the other in flat, predetermined spacing Chambers made of two interlocking U-profiles while the second medium fills the space between the chambers. 2. Heat exchanger duct according to claim 1, characterized in that that the legs of the U-profiles are shaped in such a way that each two profiles without additional connection to can be nested in a permanent, closed profile. 3. Heat exchanger duct according to claim 1, characterized in that the two ends of the individual chambers in the depth of the the desired distance between the chimneys at right angles to the outside are and closed by the flange of the heat exchanger channel for the medium flowing around the chambers and the chambers were kept at a certain distance even by the interlocking flanging. 4. Heat exchanger duct according to claim 1 and 3, characterized in that that the chambers are held at the desired distance by racks inserted on the long side. 7625179 02.02.78