WO2010003580A1

WO2010003580A1 - Ventilation module for vehicle roof-mounted systems

Info

Publication number: WO2010003580A1
Application number: PCT/EP2009/004752
Authority: WO
Inventors: Alfred MÄRZ; Christian Battenberg; Carsten Vonholdt; Jochen Streck
Original assignee: Konvekta Aktiengesellschaft
Priority date: 2008-07-07
Filing date: 2009-07-01
Publication date: 2010-01-14
Also published as: CN102089169A; CN102089169B; DE102008031549B3

Abstract

The invention relates to a ventilation module (1) comprising a ventilation module housing (19) and a fan element (3) with a fan motor (5) as well as with a fan wheel or blower wheel or impeller wheel (7) for a ventilation, air-conditioning and/or heating system for vehicles, which can be positioned at least partially on the roof or partially integrated onto the roof, wherein the fan element (3) is surrounded by two halves (21), of identical shape, of the fan module housing (23).

Description

Ventilation module for vehicle roof systems

description

Field of Technology:

According to the preamble of claim 1, the invention relates to a ventilation module comprising a fan element and a ventilation module housing for a ventilation, air conditioning and / or heating system for vehicles, which can be positioned at least partially on the roof or on the roof. A fan element includes a fan or blower or impeller and a fan motor therefor. A ventilation unit of such a system is composed of one or more ventilation modules. Especially at

Buses and buses are used for roof ventilation, rooftop and / or rooftop heating systems. Usually, a ventilation unit constructed from at least one ventilation module is roof-mounted in such systems for heat dissipation on the high-pressure side

Used heat exchanger device. The use as a fan for Aufdachverdampfungseinrichtungen an air conditioner or for rooftop positionable heating and / or ventilation systems is also possible.

When positioning rooftop semi-integrated on a vehicle, the housing of the system is inserted into a recess provided in the vehicle roof, so that only an upper part of the housing protrudes beyond the vehicle roof. State of the art:

In a climate control system, a compressor compresses a gaseous refrigerant, whereby it heats up and is led through a line to a condenser. The condenser is a high pressure side

Heat exchanger device. There, the compressed refrigerant is cooled by air cooling. In this case, air is sucked in by a ventilation unit through an air inlet, cools the refrigerant and is discharged again through an air outlet. Thereupon, the refrigerant, which is still under high pressure, passes through a line to an expansion device. The expansion device may for example be a throttle. There, the refrigerant expands and cools down further. It then passes into a low-pressure side heat exchanger such as an evaporator. In the low-pressure side heat exchanger so the room air for the vehicle compartment to be cooled heat is removed. A fan draws in the room air through an inlet opening, which then flows on the low-pressure side heat exchanger and is cooled in this way. The cooled air is then passed through openings in the vehicle compartment.

In a heating system, a heating heat exchanger known for vehicle heaters is used, such as a powered radiator. This heats the guided by means of a blower via the heater core and then passed through openings in the vehicle compartment air. In a combination of air conditioning and heating system for vehicles, for example, a heat exchanger block consists of a heat exchanger and an evaporator.

In a pure ventilation system, the air exchange between the interior of the vehicle and the surroundings is supported or controlled by a fan wheel driven by a drive unit.

For a combination of a ventilation system with a

Heating system or air conditioning or even with an air conditioning and heating system, the air conditioning and / or heating system also acts as a ventilation system.

Ventilation modules for on-roof climate control and / or on-roof heating systems are known, which have one or more fan elements and a ventilation module housing. Often, a fan element has its own fan housing, but this is not designed as for the ventilation, air conditioning and / or heating system already adapted housing, but this adaptation only by the

Ventilation module housing, in which the ventilation element is inserted, is achieved.

German Offenlegungsschrift DE 103 45 997 A1 discloses, for example, an air conditioning and / or heating system which contains one or more ventilation modules, each with one or more fan elements. Depending on the power size, one or more holes, in each of which a fan element is inserted, are present in the ventilation module housing. Such one-piece ventilation module housing have the disadvantage of being relatively large and so bulky and not easy to handle. In addition, while the fan element must be used in the existing as a whole fan module housing and thus at least one degree of freedom to move the fan element when inserting available, which has the disadvantage that the necessary consequence that an extra fixation usually by an additional fixing element, such as a bracket , inserted or operated. Furthermore, in the known ventilation module housings, the flexibility with regard to the insertion of different types of fan elements is low. This disadvantage is particularly evident in already one-piece ventilation module, so a fan element with already designed as a ventilation module housing fan housing, come to light.

In the published patent application DE 10 2006 055 411 A1, a ventilation module is disclosed, which can be attached to further ventilation modules including a line connection, but also has the disadvantage of a one-piece ventilation module housing.

In the US Patent US 62 95 826 Bl a heating, ventilation and air conditioning system for mounting on a vehicle roof is disclosed, which has symmetry properties and a modular characteristic, but in which also a fan element in a corresponding circular opening of at least one of Fan element one-piece housing part is inserted. The invention is therefore based on the object, in particular with regard to their structure, to provide an improved ventilation module for a ventilation, air-conditioning or / and heating system for vehicles, which can be positioned at least partly on-roof or on-roof partially integrated.

Summary of the invention:

The object is achieved by a ventilation module comprising

Ventilation module housing and a fan element with fan motor and with fan or fan or impeller for at least partially rooftop or rooftop semi-integrated positionable ventilation, air conditioning and / or heating system for vehicles, wherein the fan element is enclosed by two in the same shape halves of the ventilation module housing , solved. The fact that in the ventilation module, the fan element is enclosed by two identical halves of the ventilation module housing in shape, an additional fixing element for the fan element is not required. The fan element can be bordered sufficiently firmly when joining the two halves of the ventilation module housing, so that, if anything, only a further fixation by gluing the two halves of the fan module housing and the fan element is made. Because the two halves of the fan module housing according to the invention are similar in shape, first only inexpensive housing parts of a mold are manufactured and secondly only half as large parts as a whole fan module housing and thus easy and handy to use housing pieces used in the construction of a ventilation module. In addition, in the inventive Ventilation module given the flexibility of inserting different versions of fan elements, such as with the same shape but different quality, when joining the halves of the ventilation module housing.

In the subclaims advantageous refinements, developments and improvements of the respective subject of the invention are given.

Preferably, in one embodiment of the present invention, the enclosure of the fan element is given solely by the positive connection of the two halves of the ventilation module housing. This is a simple and inexpensive way of fixing the fan element in the ventilation module housing. For example, in this case, the two halves of the ventilation module housing can have a bar which fits under the ventilation element and at least fixes the fan element with respect to the vertical degree of freedom of movement in the ventilation module housing.

According to an advantageous development of the present invention, the two halves of the ventilation module housing each have a half over the

Fan element exciting protective device such as preferably a protective grid or a number of protective ribs on. As a result, a protective device over the fan wheel is integrated directly into the ventilation module housing and consequently does not need to be additionally mounted. Another improvement is a protective device, which also serves to guide the Lüftstroms and thus to an increase contributes to the efficiency of the ventilation.

According to an advantageous embodiment of the present invention, the two halves of the ventilation module housing each have a semicircular recess on the connection side, which together form a circular recess of the ventilation module housing for enclosing the fan element when the halves are assembled. In this way, embodiments of the fan element, for example with different heights or with the same maximum diameter-exhibiting circular or polygonal cross-section, can be combined with two fan module housing halves of a single mold to form a ventilation module according to the invention. The connection side of one half of a ventilation module housing is the side to which the other half of the ventilation module housing is attached.

A preferred embodiment of the ventilation module according to the invention comprises a fan element that has a circular cross-section in the plane perpendicular to the fan wheel axis, and two halves of the ventilation module housing, each having the circular side shell of the fan element half-shell comprising a semi-circular recess. The circular cross-section is common in fan elements because of the rotating fan also in terms of space and material efficiency and corresponds to the current Industriestandart. An encompassing of such a fan element with two semicircular half-shells is a particularly stable and yet simple enclosure in a assembled from two halves ventilation module housing Fan element not only at certain points but held all around in the ventilation module housing.

An advantageous development of the ventilation module according to the invention is the addable to a further ventilation module design. As a result, ventilation units composed of a ventilation module or several ventilation modules are flexibly made possible depending on the capacity of the system. Have a good fit because of the geometry properties for insertion or assembly

Ventilation modules which have a rectangular cross-section perpendicular to the fan wheel axis. This means that an entire area of ventilation modules can seamlessly form a ventilation unit.

Preferably, the two halves of the ventilation module housing made of molded plastic. This is for a fan module housing a cost-effective, easy to be moved in shape and sufficiently stable material.

Further enhancement of the two halves of the vent module housing is complementary to each other to connect the two halves contributing fasteners at the points of contact of the two joined halves of the ventilation module housing. This gives the firm connection of the two joined halves of the ventilation module housing additional support. But even a firm bonding of the two halves of the ventilation module housing and the fan element to a fan module is particularly advantageous because of the particularly simple and inexpensive yet very stable connection. Brief description of the drawings:

With reference to the drawings, embodiments of the invention will be explained.

Show it

Fig. 1 is a schematic exploded view of an embodiment of the ventilation module;

FIG. 2 shows a perspective schematic representation of an embodiment of the assembled ventilation module; FIG.

3 shows a schematic illustration of two further embodiments of the ventilation module connected to each other;

4 is a schematic exploded view of another embodiment of the ventilation module; and

Fig. 5 is a perspective schematic representation of a rooftop positioned on a vehicle ventilation, air conditioning and / or heating system with four copies of an embodiment of the ventilation module.

Detailed description of the invention:

In the figures, the same reference numerals designate the same or functionally identical components. All drawings are to be understood schematically. On scale images was omitted for the purpose of increased clarity of presentation.

FIG. 1 shows a schematic exploded view of an exemplary embodiment of the ventilation module 1 for a ventilation, air-conditioning or / and heating system for vehicles, which can be positioned at least partially on roof or semi-integrated. In the middle of the ventilation module 1 is the fan element 3 with a centrally mounted fan motor 5 for the fan 7 with in this case five fan blades 9, wherein a fan may also have a different number of fan blades. The fan motor 5 is integrated with the fan 7 in a fan housing 11. This fan housing 11 has on its upper side in this example star-shaped arranged protective ribs 13, wherein also fan elements 3 without protective devices are conceivable. Furthermore, the lateral lateral surface 15 of the fan element 3 has a fan shape 7 framing ring shape with four outer evenly distributed over the circumference of the receiving elements 17. The receiving elements 17 in this case have the form of hooks each with a serving for positioning hole at its top. However, other external forms of a fan element 3 are conceivable. The number and the shape of the receiving elements 17 are not limited to those shown in this embodiment. Also fan elements 3 without extra receiving elements are possible variants. The cross-section of the fan element 3 perpendicular to the fan wheel axis may instead of a circular shape also form a polygon such as a hexagon. The fan housing 11 is not yet to be used as a module in a Aufdachlüftungs-, Aufdachklima- and / or On-roof heating system required form adapted. A fan element 3 is usually produced by a manufacturer other than that of the entire system. The suitable shape for a ventilation module 1 of such a system suitable for vehicles is only created by the ventilation module housing 19. The

Ventilation module housing 19 here consists of two halves 21 with the same shape. Both halves 21 have on the connection side a semicircular recess, which in this example serves to include the fan element 3 serving half shell 23, virtually a frame. At the lower edge of the half-shell 23 of a ventilation module housing half 21 there is an inwardly molded strip 25 for holding the fan element 3 enclosed beneath the assembled ventilation module 1. FIG. 2 shows, for example, a fan element 3 enclosed in two ventilation module housing halves 21. Although the fan element 3 enclosed in FIG. 2 has the same external dimensions as that shown in FIG. 1, it represents another embodiment inside. The fan blades 9 are shaped to blow in the opposite direction and the star-shaped protective ribs 13 below Fan wheel 7 located. For the receptacle elements 17 of the fan element 3 to be recognized in FIG. 1 on the fan element 3, the respective half 21 of the fan module housing 19 has first receiving slots concealed in FIG. 1 and secondly holes 27 for positioning the fan element 3 in the ventilation module housing 19. In FIG 2 shown ventilation module 1, the positioning of the fan element 3 by means of inserted into the positioning holes 27 positioning pins 33. However, receiving elements 17 and Positioning pins 33 not necessary features, but already, for example, by notching or simple bonding a fan element 3 could be sufficiently firmly enclosed in two uniform halves 21 of the ventilation module housing 19. In the illustration of Figure 2, the fan element 3 is fixed by the positive connection of the two half-shells 23 of the two assembled ventilation module housing halves 21 with respect to the degrees of freedom of the space in the ventilation module housing 19. But also punctually in the

Ventilation module housing halves 21 included elements for enclosing the fan element 3, such as each half 21 two headband, are conceivable in the present invention.

Furthermore, the two halves 21 of the ventilation module housing 19 each have half over the fan element 3 exciting protective ribs 29 joined together in the form of arranged in concentric circles fins. These protective ribs simultaneously serve to guide the air flow. For the protection device 29, other forms such as a protective grid are conceivable, the function of guiding the air flow is not absolutely necessary. Furthermore, the protection device 29 does not need to be integrated in the ventilation module housing 19, but instead may be contained in the ventilation element 3, for example.

The two halves 21 of the ventilation module housing 19 contain on their connection side each complementary to the connection of the ventilation module housing halves 21 contributing Connecting elements 31, which in this case are small cuboid projections with complementary recesses on the respective other half 21 of the ventilation module housing 19. However, other connection elements 31 suitable for connections of housing halves are also possible. In addition, a connection of the two halves 21 of the ventilation module housing 19 is conceivable without connecting elements 31, such as by gluing alone.

The assembled in Figure 2 ventilation module 1 has in the plane perpendicular to the fan axis on a rectangular cross-section. Depending on the specification in the rooftop ventilation, rooftop air conditioning or / and rooftop heating system, this cross-section in other embodiments may also have other shapes, such as a hexagonal shape.

The halves 21 of the ventilation module housing 19 are made of injection-molded plastic. But there are also other materials conceivable, such as foamed plastic, aluminum or other suitable materials.

In Figure 3, two joined together further embodiments of the ventilation module 1 are shown. The two ventilation modules 1 are each composed of two ventilation module housing halves 21 of the same shape, the one

Surround fan element 3, constructed. The fan element 3 is an axial fan with a fan 7 and a current-driven fan motor 5. Further, the fan motor 5 is controlled by signals sent via control lines. The power supply and control of the fan motors 5 of the fan elements 3 can be done for example by a conductor track. In that shown in Figure 3 Embodiment two ventilation modules 1 according to the invention are combined to form a ventilation unit 39 for a ventilation, air-conditioning or / and heating system for vehicles, which can be positioned at least partially on roof or semi-integrated. Depending on requirements, the ventilation unit 39 may also be smaller or larger by being composed of one or any number of assembled ventilation modules 1 according to the invention. The ventilation modules 1 are made of mechanical fasteners 41, such as

Plugs, put together. However, only a fixed adhesive connection of the ventilation modules 1 and the ventilation module housing halves 21 is conceivable.

Figure 4 shows a schematic exploded view of another embodiment of the ventilation module 1 for a positionable on a vehicle ventilation, air conditioning and / or heating system. The two halves 21 of the ventilation module housing 19 have the same shape as that shown in Figure 1 and Figure 2. The ventilation element 3 with a central drive unit 5 and a fan wheel 7 has a lateral lateral surface 43, which surrounds the impeller 7 uniform octagonal shape with four outer evenly distributed over the circumference of the receiving elements 17. The receiving elements 17 in this case have the form of hooks, respectively a positioning hole at its top. The number and shape of the receiving elements 17 may also be different as needed in this embodiment as needed. The maximum diameter of the octagonal, perpendicular to the axis of the

Fan wheel 7 lying cross section of the fan element 3 has the appropriate degree to the enclosure in the two Half shells 23 of the fan housing halves 21, which form an enclosing ring around the fan element 3 with the octagonal cross section in the assembled fan housing halves 21. The fan element 3 is hooked by the ventilation module housing 19

Receiving elements 17 positioned. However, a simple, firm bond would also be suitable for this purpose, or notches or rails intended for fixing already provided when the ventilation module housing halves 21 are joined together.

Figures 1, 2 and 4 show that when using the same shape of the ventilation module housing halves 21 different variants of fan elements 3 can be enclosed.

FIG. 5 is a perspective view of a ventilation, air-conditioning or / and heating installation 52 with four copies of an exemplary embodiment of the ventilation module 1 positioned on a vehicle 50 in perspective.

The mounted on the roof of a bus 50 air conditioning and / or heating system 52 has in the middle of a ventilation unit 39 and on its right and left side two evaporator boxes 54, which include, inter alia, heat exchanger blocks.

The ventilation unit or blower unit 39 contains four successively assembled ventilation modules 1 according to the invention, each with a fan wheel with fan motor which is not explicitly recognizable in the illustration. Depending on the size of the system 52, the number of ventilation modules vary. Each ventilation module 1 comprises two identical halves 21 of a ventilation module housing and a fan element 3 enclosed therein. In this example, virtually one diagonal of the respective ventilation module housing forms the seam between the fan module housing halves 21. The housing of the air conditioning and / or heating system 52 and that of the ventilation modules 1 can be made of molded plastic or any other suitable material, such as aluminum.

For example, at least a portion of the system 52 on roof can be designed partially integrated in a roof of a rail vehicle or bus.

In a pure ventilation system for vehicles are

Evaporator boxes with heat exchanger blocks not available, but only required for ventilation elements such as a ventilation module 1 or more assembled ventilation modules 1, each with a not explicitly visible in the presentation fan with

Fan motor. Thus, an embodiment of the variant of a pure ventilation system for vehicles in the outer view except for the then not necessary evaporator boxes of the plant 52 shown in Figure 5 corresponds.

Claims

1. Ventilation module (1) comprising a ventilation module housing

(19) and a fan element (3) with a fan motor (5) and with a fan or fan or impeller (7) for a ventilation or air conditioning and / or heating system (52) for vehicles (52) which can be positioned at least partially on roof or semi-integrated 50), characterized in that

the fan element (3) is enclosed by two halves (21) of the ventilation module housing (19) which are identical in shape.

2. Ventilation module (1) according to claim 1, wherein the

Surrounding the fan element (3) is given solely by the positive connection of the two halves (21) of the ventilation module housing (19).

3. Ventilation module (1) according to claim 1 or 2, wherein the two halves of the ventilation module housing (19) each have in half over the fan element (3) exciting protective device (29).

4. Ventilation module (1) according to claim 3, wherein the

Protective device (29) is a protective grid or a number of protective ribs.

5. Ventilation module (1) according to claim 3 or 4, wherein the protective device (29) also serves to guide the air flow.

6. Ventilation module (1) according to one of claims 1 to 5, wherein the two halves (21) of the ventilation module housing (19) both at the connecting side have a semicircular recess which together when joining the halves (21) together a circular recess of the ventilation module housing ( 19) for enclosing the fan element (3) form.

7. Ventilation module (1) according to one of claims 1 to 6, wherein

- The fan element (3) in the plane perpendicular to the fan axis has a circular cross-section, and

- The two halves (21) of the ventilation module housing (19) each have a circular side wall of the

Fan element (3) comprise half half-shell (23) as a semi-circular recess.

8. Ventilation module (1) according to one of claims 1 to 7, wherein it is configured available to a further ventilation module.

9. Ventilation module (1) according to one of claims 1 to 8, wherein it has a rectangular cross-section in the plane perpendicular to the fan or fan or Flügelradachse.

10. Ventilation module (1) according to one of claims 1 to 9, wherein the two halves (21) of the ventilation module housing (19) made of injected Plastic exist.

11. Ventilation module (1) according to one of claims 1 to 10, wherein the two halves (21) of the ventilation module housing (19) each complementary to one another, for connecting the halves (21) of the ventilation module housing (19) contributing fasteners (31).

12. Ventilation module (1) according to one of claims 1 to 11, wherein the fan element (3) and the two halves (21) fan module housing (19) are firmly bonded together.