DE202008006131U1 - Ventilation unit with cleaning device - Google Patents

Abstract

Ventilation unit with cleaning device, with a channel-shaped, one Durchströmungsweg limiting housing (1), in which two spaced apart in the flow direction, an intermediate chamber (17) forming heat exchanger elements (2, 3) are arranged, wherein adjacent to the heat exchanger element (2, 3) a plurality of access sockets (4) in vertical association with each other on at least one wall the housing (1) are arranged, wherein each access socket (4) a tubular guide wall penetrating the wall (5) and by means of a releasable closure element (6) is closable, wherein the access socket (4) matching the Carrying out a cleaning lance provided with nozzles (8) (7) and adapted to carry out a suction lance is, with an access socket (4) at the lower zero level of the housing (1) is arranged.

Description

Out The prior art is a variety of designs of ventilation equipment known, which for building ventilation or building ventilation serve. These ventilation units have in common that they comprise a channel-shaped housing, in which at least one heat exchanger is arranged. This one can equipped in the form of a heating register or cooling register be.

The Construction of such ventilation equipment, which fixed in buildings, does not allow or only very limited to clean the interiors. dismantling of individual components divorced for space reasons in Essentials.

The Ventilation devices usually have considerable Hygiene problems, so it is necessary, especially the To clean or disinfect heat exchanger elements. Due to the cramped space and the many times obsolete constructions is the access to the heat exchanger elements hardly possible. In particular, between adjacent heat exchanger elements the problem is that there are breeding grounds for germs, Legionella and the like are present.

Examples of such ventilation devices show the DE 195 05 166 A1 . DE 92 05 295 U1 and the DE 698 01 762 T2 ,

By the pipe connections is hardly any in practice either Access possible, which allow a cleaning or disinfection would. So far the problem has been solved that either no cleaning or disinfection is done could be dismantled or that entire plant areas be dismantled had. In the latter solution results in a significant financial expense, with a high time outage of the ventilation unit is connected.

The DD 131 964 A describes a method and apparatus for cleaning finned tubes in industrial heat exchanger systems. In this case, a cleaning lance between a boiler shell and the flanges of the finned tubes is introduced via a guide tube, wherein the cleaning lance is provided with a nozzle head, so that by a reciprocating cleansing spraying the finned tubes should be possible. It proves to be disadvantageous that a uniform cleaning of the finned tubes is not possible, since this depends on the longitudinal movement of the cleaning lance and the respective position of the nozzle head.

The US 46 00 153 A shows a sword-shaped cleaning tool with a plurality of attached at its end openings, which can be used for example for cleaning air conditioners. Again, it proves to be disadvantageous that a targeted cleaning is not possible because on the one hand, the cleaning tool is performed by hand to spray the components to be cleaned and because on the other the distance and the positioning of the outlet openings are highly variable.

From the WO 2005/037585 A1 An air conditioning system is previously known in which fixed cleaning devices are provided, which are permanently installed in an air flow channel and can spray, for example, a heating unit and a cooling unit.

Another heat exchanger with a cleaning device shows the DE 35 18 744 C1 , In this case, an inlet nozzle for a cleaning liquid is provided in a housing wall, which is sprayed into a chamber at certain time intervals.

From the DE 40 33 321 C2 a heat exchanger of a motor vehicle is known in which a tubular spray device provided at its end with a spray opening manually through an opening of a housing and along a heat exchanger is movable, wherein the spray device is provided with a sliding lid, which close the opening of the housing can.

The US 63 08 899 B1 shows a liquid injection system in which a spray nozzle is coupled to a hose.

Of the Invention is based on the object, a ventilation device the cleaning device and an associated cleaning lance to create, with a simple design and easier, cheaper Applicability safe cleaning or disinfection while avoiding allow the disadvantages of the prior art.

According to the invention the task through the feature combinations of the independent Claims solved, the respective subclaims show further advantageous embodiments of the invention.

According to the invention thus provided that adjacent to the at least one heat exchanger element several access jacks installed in the housing wall be, which allow the insertion of a cleaning lance and which after completion of the cleaning / disinfection process be closed.

According to the invention is thus a retrofit Access to the relevant areas of the ventilation unit possible, which can be easily implemented and does not require disassembly of the entire structure of the ventilation unit.

The access sockets according to the invention are designed that they are the airflow in the ventilation unit do not interfere.

By the possibility of a cleaning lance by the respective It is possible to introduce an access socket to clean certain areas of the heat exchanger elements or to disinfect. For this purpose, the cleaning lance to a high pressure device is more common Type connected so that water, steam, a water-air mixture or the like through the high pressure nozzles can be sprayed.

Especially It is favorable if several access jacks in vertical Assigned arrangement to be mounted on a vertical wall. It is understood, however, that the arrangement as well as the selection of the Number of access sockets within the scope of the invention to a large extent can be varied. It has been particularly advantageous proved to be, if the individual access jacks each 12 cm from each other are spaced.

Farther It is particularly favorable if an additional Access socket at the lower zero point of the channel-shaped housing is attached to the cleaning medium through this access socket and to cancel the dissolved dirt particles, for example by means of a wet vacuum and / or an associated lance.

According to the invention it possible to use usual high pressure cleaners an adapter to connect the cleaning lances. Consequently is a simple and inexpensive application of the invention Ventilation device ensured.

The Dimensioning, selection of number and arrangement of access sockets is in a simple way to the respective type and size of Air handling unit customizable. Also insulated double walled Housing is no obstacle here.

By a suitable embodiment of the cleaning lance, in particular by a corresponding arrangement of the nozzles provided at this, is it possible to target specific areas of the ventilation unit or the heat exchanger element with high-pressure cleaning agents to edit. It goes without saying that the cleaning lance is also uniform may have distributed on the circumference nozzles. Due to the rotatability The cleaning lance can cover the entire interior of the housing and the entire surface of the heat exchanger element simply be cleaned. Also it is possible while the cleaning process to rotate or pivot the cleaning lance.

There According to the invention several access sockets provided it is possible in a simple way, when removed Closing element of the access socket a visual inspection of the interior of the housing and to monitor the cleaning process or to check if this is completely completed is.

in the The invention is based on an embodiment described in conjunction with the drawing. Showing:

1 a schematic plan view, in sectional view through an inventive ventilation device with access socket and cleaning lance,

2 a simplified side view of an access socket according to the invention,

3 an end view of the access socket according to 2 .

4 a simplified side view of a cleaning lance according to the invention,

5 the adapter area between a cleaning lance according to the invention and a high-pressure cleaning connection element,

6 a further side view of a cleaning lance nozzle according to the invention, and

7 an enlarged detail representation of the detail of the 6 ,

The ventilation device according to the invention comprises a channel-shaped, a flow path 9 limiting housing 1 with a wall, which, as in 1 represented, may be formed double-walled with an insulating intermediate layer.

In the case 1 are at the in 1 shown embodiment, two heat exchanger elements 2 . 3 arranged, which are formed like lamellas in the usual way and via a connection 10 have, through which cooling medium or heating medium can be supplied. With regard to the construction of the heat exchanger elements 2 . 3 can be made to the prior art.

The 1 shows one in the double-walled housing 1 built-in access socket 4 which (see 2 ) a cylindrical guide bush 5 and a bearing plate 11 includes. The bearing plate 11 is by means of a plate-shaped closure element 6 lockable, if necessary, seals can be attached. Furthermore, the guide bush 5 be provided with seals, such as O-rings. It is understood that the access socket 4 can be retrofitted into existing ventilation units. The length of the guide bush 5 determined by the thickness of the wall 1 of the housing and should be such that, on the one hand, a secure guidance of a substantially cylindrical cleaning lance 7 is possible and that on the other hand, the flow through the flow path 9 not or only slightly affected.

The 1 further shows a substantially cylindrical cleaning lance 7 , which at their circumference and over their length with several nozzles 8th is provided. Such nozzles 8th are for clarity in the 6 and 7 shown again. They are for example in a conical recess 8th arranged, are themselves conical and comprise a plurality of outflow openings 7 , Regarding the construction of the nozzles 8th can also be essentially referred to the prior art.

The 4 shows an embodiment of the cleaning lance 7 in which the individual nozzles 8th are mounted only in an axial arrangement.

The 5 shows a schematic representation of a high-pressure cleaning gun 15 , which by means of a quick coupling 16 with the cleaning lance 7 can be connected.

At the in 4 As shown, it can be seen that the nozzles 8th in axial spacing, for example, may have a distance of 20 mm.

1

Housing / wall

2, 3

Heat exchanger element

4

access jack

5

guide bush

6

closure element

7

cleaning lance

8th

jet

9

Durchströmungsweg

10

connection

11

bearing plate

12

poetry

13

conical recess

14

outflow

15

High-pressure cleaning pistol

16

quick coupling

17

intermediate chamber

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19505166 A1 [0004]
• - DE 9205295 U1 [0004]
• - DE 69801762 T2 [0004]
• - DD 131964 A [0006]
• US 4600153 A [0007]
• WO 2005/037585 A1 [0008]
• - DE 3518744 C1 [0009]
• - DE 4033321 C2 [0010]
• US 6308899 B1 [0011]

Claims (5)

Ventilation device with cleaning device, with a channel-shaped, a flow path limiting housing ( 1 ), in which two spaced apart in the flow direction, an intermediate chamber ( 17 ) forming heat exchanger elements ( 2 . 3 ) are arranged, wherein adjacent to the heat exchanger element ( 2 . 3 ) several access sockets ( 4 ) in vertical association with each other on at least one wall of the housing ( 1 ), each access socket ( 4 ) a tubular, the wall by cross-guide bushing ( 5 ) and by means of a releasable closure element ( 6 ) is closable, wherein the access socket ( 4 ) suitable for carrying one with nozzles ( 8th ) provided cleaning lance ( 7 ) and adapted to carry out a suction lance, wherein an access socket ( 4 ) at the lower zero level of the housing ( 1 ) is arranged. Ventilation device according to claim 1, characterized in that the access sockets ( 4 ) in a vertical wall of the housing ( 1 ) are installed. Ventilation device according to claim 1 or 2, characterized in that a plurality of access sockets ( 4 ) are spaced at a distance of 12 cm from each other. Ventilation device according to one of claims 1 to 3, characterized in that the access socket ( 4 ) with at least one seal ( 12 ) for the cleaning lance ( 7 ) is provided. Cleaning lance with a substantially tubular, cylindrical body having a plurality of nozzles distributed over its axial length ( 8th ) and a detachable access socket ( 4 ), through which the cleaning lance in the axial direction is feasible, wherein the access socket ( 4 ) a substantially cylindrical guide bushing ( 5 ), which with multiple seals ( 12 ) is provided for sealing when performing the cleaning lance, and by means of a closure element ( 6 ) is closable, and wherein the cleaning lance by means of a quick coupling ( 16 ) with a high-pressure cleaning device ( 15 ) is connectable.