VENTILATION DEVICE FOR FILTERING AIR AND FOR SEPARATING WATER AEROSOLS FROM AIR

Abstract

A ventilation device for filtering air and for separating water aerosols from air may include at least one filter element, at least one housing, at least one fan, and at least one flow adapter. The filter element may be secured in the housing such that air is flowable through an inlet opening of the housing to an outlet opening of the housing in a flow direction. The fan may be secured on the outlet opening downstream of the housing in the flow direction. The flow adapter may be secured on the inlet opening upstream of the housing in the flow direction. A coupling frame may be secured in an airtight manner between the housing and the flow adapter. The coupling frame may include a discharge channel arrangement for draining water collected in the at least one filter element.

Claims

1. A ventilation device for filtering air and for separating water aerosols from air, comprising: at least one filter element, at least one housing, at least one fan, and at least one flow adapter; the at least one filter element secured in the at least one housing such that air is flowable through an inlet opening of the at least one housing to an outlet opening of the at least one housing in a flow direction; the at least one fan secured on the outlet opening downstream of the at least one housing in the flow direction; the at least one flow adapter secured on the inlet opening upstream of the at least one housing in the flow direction; a coupling frame secured in an airtight manner between the at least one housing and the at least one flow adapter; and wherein the coupling frame includes a discharge channel arrangement for draining water collected in the at least one filter element.

2. The ventilation device according to claim 1, wherein the discharge channel arrangement includes at least one horizontal gulley channel connected in a fluidic manner to a drip-off region of the at least one housing.

3. The ventilation device according to claim 2, wherein: the at least one gulley channel includes at least two gulley channels arranged one above the other; and the discharge channel arrangement further includes at least one vertical discharge channel connecting the at least two gulley channels to one another in a fluidic manner.

4. The ventilation device according to claim 1, wherein the at least one flow adapter is structured as a single piece and composed of plastic.

5. The ventilation device according to claim 4, wherein: the at least one flow adapter has a collecting region and a flow region; the flow region corresponds with the inlet opening of the at least one housing in an air-conveying manner; and the collecting region is arranged offset relative to the flow direction below the flow region and outside a main air flow of the at least one flow adapter.

6. The ventilation device according to claim 5, wherein: the discharge channel arrangement connects the collecting region of the at least one flow adapter and a drip-off region of the at least one housing to one another in a fluidic manner; and the drip-off region corresponds with a drainage zone of the at least one filter element for draining water separated in the at least one filter element.

7. The ventilation device according to claim 6, wherein: the at least one flow adapter has an adapter outlet opening leading outwards from the collecting region; and the adapter outlet opening is connected in a fluid-conveying manner to the discharge channel arrangement.

8. The ventilation device according to claim 1, further comprising a plurality of identical ventilation modules, wherein: the at least one filter element includes a plurality of filter elements, the at least one housing includes a plurality of housings, and the at least one fan includes a plurality of fans; each individual ventilation module of the plurality of ventilation modules has a flow surface and is defined by a filter element of the plurality of filter elements, a housing of the plurality of housings, and a fan of the plurality of fans; and the plurality of ventilation modules are stacked on one another in a detachable manner such that a total flow surface of the ventilation device corresponds to a multiple of the flow surface of the individual ventilation module.

9. The ventilation device according to claim 8, wherein: at least two neighbouring ventilation modules of the plurality of ventilation modules each have a cable receptacle recess of a plurality of cable receptacle recesses extending in the flow direction on the respective housing; and the at least two neighbouring ventilation modules bear against one another such that the plurality of cable receptacle recesses are aligned in the flow direction and define a cable recess.

10. The ventilation device according to claim 9, wherein: the housing of a first module of the at least two neighbouring ventilation modules has a recess extending in the flow direction; the housing of a second module of the at least two neighbouring ventilation modules includes a moulding extending in the flow direction; and the recess and the moulding are in engagement transversely to the flow direction and secure the at least two neighbouring ventilation modules to one another in a detachable manner.

11. The ventilation device according to claim 8, wherein: the plurality of ventilation modules includes four ventilation modules; the at least one flow adapter includes a single flow adapter; and the four ventilation modules are secured to one another in a detachable manner to form a 22 stacked block and are secured on the single flow adapter in an air-conveying manner via the coupling frame.

12. The ventilation device according to claim 8, further comprising a hinge apparatus and a closure unit, wherein: the coupling frame includes a module support frame surrounding the plurality of ventilation modules and an adapter support frame supporting the at least one flow adapter; and the module support frame and the adapter support frame are movable together via the hinge apparatus and are securable to one another via the closure unit.

13. The ventilation device according to claim 12, wherein the discharge channel arrangement is arranged within the adapter support frame.

14. The ventilation device according to claim 8, further comprising a controllable passage arrangement for the inlet opening of a respective ventilation module of the plurality of ventilation modules, wherein the controllable passage arrangement extends perpendicular to the flow direction, is secured on the coupling frame, and is configured to control a volumetric air flow through the respective ventilation module.

15. The ventilation device according to claim 1, wherein the at least one filter element includes a peripheral sealing edge bearing on one side against a sealing surface of the at least one housing surrounding the inlet opening and, on another side, bearing against the coupling frame (H) and such that the peripheral sealing edge seals the at least one housing around the inlet opening to the coupling frame.

16. The ventilation device according to claim 15, wherein an elastic seal is secured on a side surface of the peripheral sealing edge facing at least one of the at least one housing and the coupling frame.

17. The ventilation device according to claim 1, further comprising a control device including at least one measuring arrangement structured and arranged to detect a volumetric air flow through the at least one filter element, wherein: the at least one fan is controllable via the control device; and the at least one measuring arrangement includes a pressure measuring unit structured and arranged to detect a static pressure.

18. The ventilation device according to claim 17, wherein: the pressure measuring unit at least one of (i) includes and (ii) is connected in a fluidic manner to a pressure measurement point; and the pressure measurement point is arranged inside the at least one housing in a region of the inlet opening and has a measurement opening.

19. The ventilation device according to claim 18, wherein: at least one of the pressure measurement point and the measurement opening is arranged in a drip-off region of the at least one housing; and the drip-off region corresponds to a drainage zone of the at least one filter element for draining water separated in the at least one filter element.

20. The ventilation device according to claim 18, wherein: the at least one housing includes a housing frame surrounding the inlet opening and defining a radially inwardly protruding inlet stage; the pressure measurement point is arranged at the inlet stage; and the measurement opening is open in the flow direction and is aligned substantially parallel to the flow direction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the figures, in each case schematically

[0026] FIG. 1 shows a view of a ventilation device according to the invention;

[0027] FIG. 2 shows a view of the ventilation device shown in FIG. 1 from the front;

[0028] FIG. 3 shows a view of the ventilation device shown in FIG. 1 from the rear;

[0029] FIG. 4 shows a side view of the ventilation device shown in FIG. 1;

[0030] FIG. 5 shows a view of the ventilation device shown in FIG. 1 from above;

[0031] FIG. 6 shows a sectional view of the ventilation device shown in FIG. 1;

[0032] FIG. 7 shows a side view of a ventilation module of the ventilation device shown in FIG. 1;

[0033] FIG. 8 shows a view of the ventilation module of the ventilation device shown in FIG. 1 from above;

[0034] FIG. 9 shows a sectional view of the ventilation module of the ventilation device shown in FIG. 1;

[0035] FIG. 10 shows a view of a flow adapter of the ventilation device shown in FIG. 1;

[0036] FIG. 11 shows a partial sectional view of the flow adapter of the ventilation device shown in FIG. 1;

[0037] FIG. 12 shows a view of the flow adapter of the ventilation device shown in FIG. 1 from the rear;

[0038] FIG. 13 shows a view of the flow adapter of the ventilation device shown in FIG. 1 from above;

[0039] FIG. 14 shows a sectional view of the ventilation device shown in FIG. 1;

[0040] FIG. 15 shows a further sectional view of the ventilation device shown in FIG. 1.

DETAILED DESCRIPTION

[0041] FIG. 1 shows a view of a ventilation device 1 according to the invention for filtering air and for separating water aerosols from air. The ventilation device 1 is shown in FIG. 2 from the front; in FIG. 3 from the rear; in FIG. 4 from the side; in FIG. 5 from above and in FIG. 6 in section. The terms front and rear here and in the following relate to the air flowing through the ventilation device 1, which air flows through the installed ventilation device 1 in the operating state from the front to the rear parallel or virtually parallel to the ground. The terms above and below relate accordingly to the alignment of the installed ventilation device 1 with respect to the ground. The ventilation device 1 has a total of four ventilation modules 2, wherein the respective ventilation module 2 has a filter element 3, a housing 4 and a fan 5. The ventilation modules 2 are identical and stacked on one another in a detachable manner to form a stacked block 19, so that a total flow surface 6 of the ventilation device 1 corresponds to a multiple of the flow surface 7 of the individual ventilation module 2. In the respective ventilation module 2, the filter element 3 is arranged in the respective housing 4 and air can flow from an inlet opening 8 to an outlet opening 9 of the housing 4 in a flow direction 10. The respective fan 5 is secured on the outlet opening 9 downstream of the respective housing 4 in the flow direction 10. The respective fan 5 is controlled by a control device 27, which has a measuring arrangement for detecting the volumetric air flow through the respective filter element 3. The structure of the ventilation module 2 is illustrated in detail in FIG. 7 to FIG. 9.

[0042] Furthermore, the ventilation device 1 has a flow adapter 11, which is secured on the respective inlet opening 8 upstream of the respective housing 4 in the flow direction 10. The flow adapter 11 in this case has two air inlets 12 and an air outlet 13, which corresponds in a fluidic manner with the respective inlet opening 8 of the respective housing 4. In this case, the flow adapter 11 is in one piecefor example made from plasticand robust, so that the air already aspirated from outside by the respective fan 5 is already distributed in the flow adapter 11. The air aspirated from outside then flows evenly over the respective filter elements 3 and the latter are protected. In FIG. 10 to FIG. 13, the structure of the flow adapter 11 is shown in detail.

[0043] In the ventilation device 1, the flow adapter 11 and the respective housing 4 are subsequently connected consecutively in the flow direction 10 to the respective filter element 3 and the respective fan 5, so that the air the air can flow through the air inlets 12 of the flow adapter 11 via the air outlet 13 to the inlet opening 8 of the respective housing 4 and further through the respective filter element 3. In this case, the respective filter element 3as shown in FIG. 6has a clean and a raw side and is formed from a filter material. The filter material is hydrophobic and the water located in the aspirated air will separate in a filtering zone 3a on the raw side. The water separated in the filter element 3 is then deposited on the raw side of the filter element under the action of gravity into a drainage zone 3b of the filter element 3. The drainage zone 3b adjoins the filtering zone 3a of the filter element 3 and is arranged offset transversely to the flow direction 10 below the filtering zone 3a of the filter element 3.

[0044] The filtering zone 3a of the filter element 3 corresponds with a filtering region 4a and the drainage zone 3b corresponds with a drip-off region 4b of the housing 4. The filtering region 4a and the drip-off region 4b of the housing 4 are adjacent to one another in this case. Furthermore, the flow adapter 11 has a flow region 11a and a collecting region 11b, which adjoin one another. The flow region 11a of the flow adapter 11 in this case corresponds in a fluidic manner with the inlet openings 8 of the respective housing 4 and the collecting region 11b is arranged offset transversely to the flow direction 10 below the flow region 11a. Furthermore, the collecting region 11b lies outside a main air flow of the flow adapter 11.

[0045] The ventilation modules 2 are secured in a detachable manner on the flow adapter 11 by means of a coupling frame 14. To this end, the coupling frame 14 has a module support frame 14a surrounding the respective ventilation modules 2 transversely to the flow direction 10 and an adapter support frame 14b supporting the flow adapter 11. The module support frame 14a and the adapter support frame 14b are mounted such that they can be folded together by means of a hinge apparatus 15 and can be secured to one another by means of a closure unit 16. Thus, the coupling frame 14 can be opened and the filter element 3 can for example be replaced in the respective ventilation module 2 in a simplified manner. A discharge channel arrangement 17 for draining the water separated in the respective filter element 3 is furthermore constructed in the coupling frame 14. The discharge channel arrangement 17as shown in FIG. 6in this case has two horizontal gulley channels 17a arranged above one another and a vertical discharge channel 17b. The respective gulley channel 17a in each case connects the drip-off regions 4b of the neighbouring housing 4 in series of the ventilation modules 2 to the discharge channel arrangement 17 and the discharge channel 17b connects the two gulley channels 17a to one another in a fluidic manner. By means of the discharge channel arrangement 17, the water separated in the respective filter element 3 can be guided outwards through the discharge channel arrangement 17 under the action of gravity. In FIG. 14 and FIG. 15, the structure of the discharge channel arrangement 17 is shown in detail. Furthermore, a passage arrangement 18here a jalousie arrangement 18afor the inlet opening 8 of the respective housing 4 is secured on the coupling frame 14 transversely to the flow direction 10. The passage arrangement 18 is provided for controlling the volumetric air flow through the respective ventilation module 2.

[0046] FIG. 7 shows a side view of an individual ventilation module 2 in the ventilation device 1. The ventilation module 2 is further shown in FIG. 8 from above and in section in FIG. 9. In order to stack the individual ventilation modules 2 on one another in a detachable manner to form the stacked block 19, the respective ventilation module 2 in the ventilation device 1 has a recess 20a extending in the flow direction 10 and a moulding 20b extending in the flow direction 10 on the housing 4 thereof. The recess 20a and the moulding 20b of the neighbouring ventilation modules 2 are in this case in engagement transversely to the flow direction 10 and form a so-called tongue and groove connection. The recess 20a and the moulding 20b fix the neighbouring ventilation modules 2 to one another in a detachable manner in this manner to form the stacked block 19. The recess 20a and the moulding 20b are constructed on the respective housing 4 on opposite housing sides 21a and 21c, as is also shown in FIG. 1 to FIG. 6 and in FIG. 14 to FIG. 15.

[0047] Furthermore, the respective ventilation module 2 has two cable receptacle recesses 22a extending in the flow direction 10 on the housing 4 thereof on the opposite housing sides 21b and 21d in each case. In the stacked block 19, the respective cable receptacle recesses 22a bear against one another at the housings 4 of the neighbouring ventilation modules 2 in the flow direction 10 and form a cable opening 22. The cable receptacle recesses 22a are designed identically, so that a cross-sectional area of the cable opening 22 corresponds to double the cross-sectional area of the individual cable receptacle recess 22a. The cable lines can be guided through the cable opening 22 in the flow direction 10 between the respective ventilation modules 2, so that without additional space requirement, electrical constituents of the ventilation device 1 upstream and downstream of the respective ventilation module 2 in the flow direction 10 can be connected to one another. The cable openings 22 out of the mutually adjacent cable receptacle recesses 22a are also shown in FIG. 1 to FIG. 6 and FIG. 14 to FIG. 15.

[0048] In order to fix the filter element 3 in the housing 4 transversely to the flow direction 10 in an airtight manner, the filter element 3 has a peripheral sealing edge 23 in the respective ventilation module 2. The sealing edge 23 in this case bears on one side against a sealing surface 24 of the housing 4 surrounding the inlet opening 8, and on the other side against the coupling frame 14. The sealing edge 23 is constructed on the filter element 3, so that during insertion or during replacement of the respective filter element 3 in the ventilation device 1, the sealing edge 23 is also inserted or replaced. The sealing surface 24 is in this case formed by a housing frame 25 surrounding the inlet opening 8. For sealing, an elastic seal 26a and 26b is securedfor example adhesively bondedin each case on one of the side surfaces 23a and 23b of the sealing edge 23 facing the housing 4 and the coupling frame 14.

[0049] FIG. 10 shows a view of the flow adapter 11. Furthermore, the flow adapter 11 is shown partially in section in FIG. 11; from the rear in FIG. 12 and from above in FIG. 13. The flow adapter 11 has the air inlets 12 and the air outlet 13, which corresponds in a fluidic manner with the respective inlet opening 8 of the respective housing 4. The flow adapter 11 is formed in one piece and preferably from plastic. As a result, the flow adapter 11 is robust and the air aspirated from outside by the respective fan 5 is already distributed in the flow adapter 11 and flows evenly via the respective filter elements 3. The flow adapter 11 in this case has the flow region 11a and the collecting region 11b, which adjoin one another. The flow region 11a of the flow adapter 11 in this case corresponds in a fluidic manner with the inlet openings 8 of the respective housing 4 and the collecting region 11b is arranged offset transversely to the flow direction 10 below the flow region 11a. Furthermore, the collecting region 11b lies outside a main air flow in the flow adapter 11.

[0050] As already explained in FIG. 1 to FIG. 6, the discharge channel arrangement 17 is constructed in the coupling frame 14. This connects the collecting region 11b of the flow adapter 11 and the drip-off regions 4b of the respective housing 4 to one another in a fluidic manner. The water separated in the filter element 3 can be guided through the discharge channel arrangement 17 out of the respective housing 4 into the collecting region 17 of the flow adapter 11 counter to the flow direction 10. To this end, the collecting region 11b of the flow adapter 11 is connected in a fluidic manner to the discharge channel arrangement 17 via a discharge opening 28, wherein the discharge channel arrangement 17 is connected at its deepest point in the lower gulley channel 17a via a discharge linenot shown hereto the discharge opening 28. The water separated in the filter elements 3 is conveyed through the drainage opening 28 into the flow adapter 11 and guided outwards counter to the flow direction 10 in the collecting region 11b of the flow adapter 11. In FIG. 6, FIG. 14 and FIG. 15, the structure of the discharge channel arrangement 17 is shown in detail.

[0051] FIG. 14 and FIG. 15 show sectional views of the ventilation device 1. In the ventilation device 1, on one side, to form the stacked block 19, the individual ventilation modules 2, and on the other side, the flow adapter 11, are secured on the coupling frame 14. The discharge channel arrangement 17 is constructed in the coupling frame 14, which has two horizontal gulley channels 17a, arranged above one another, and a vertical discharge channel 17b. In the installed ventilation device, the respective gulley channel 17a is aligned horizontally with a deviation of up to 10 in relation to the ground, in order to be able to convey the water separated in the filter element 3 horizontally in the discharge channel arrangement 17 under the action of gravity. The respective gulley channel 17a in each case connects the drip-off regions 4b of the neighbouring housing 4, in series, of the ventilation modules 2 in the stacked block 19. The two gulley channels 17a are vertically connected in a fluidic manner via the discharge channel 17b. In the installed ventilation device 1, the vertical discharge channel 17b is arranged vertically with a deviation of up to 10 in relation to the ground, so that the water separated in the filter element 3 can be conveyed under the action of gravity out of the upper gulley channel 17a to the lower gulley channel 17a. The water separated in the filter elements 3 is subsequently conveyed out of the discharge channel arrangement 17 into the collecting region 11b of the flow adapter 11 and further outwards. To this end, the lower gulley channel 17a is connected in a fluidic manner at its deepest point by means of the discharge opening 28 to the collecting region 11b of the flow adapter. In this advantageous manner, the plurality of housings 4 and the plurality of filter elements 3 are connected in a fluidic manner to one another by means of the discharge channel arrangement 17 in the coupling frame 14 and the water separated in the plurality of filter elements 3 can be drained from the ventilation device 1 in a simplified manner.

[0052] In summary, the ventilation device 1 according to the invention can be built in a modular manner and the identically designed ventilation modules 2 can be exchanged with one another in a simple manner; furthermore, the water separated in the respective filter element 3 can be drained from the ventilation device 1 in a simplified manner; sealing of the ventilation device 1 can be controlled in a simplified manner and the ventilation device 1 can be controlled in a more precise manner, and the air flow in the respective filter element 3 can be distributed better.