Air-conditioning system for mounting on ceiling

Abstract

The invention relates to an air conditioning system for mounting on a ceiling (101). In the assembled state, the housing (1) is placed on the support (3) and the support (3) is placed on the ceiling (101). The support (3) is or can be connected to the extension unit (4).

Description

Technical Field

[0001] The present invention relates to an air conditioning device for controlling the temperature of air in a room, in particular cooling the air in the room. The air conditioning device is designed to be mounted on a roof, for example, on the roof of a vehicle (eg, a camper or a motorhome). Background Art

[0002] The principle of air cooling by means of cooling circuit refrigeration is described, for example, in WO 2007 / 042065A1. In the so-called ceiling-mounted air conditioning system used, for example, in campers or motorhomes, the components of the cooling circuit (i.e., blower, heat exchanger, evaporator, liquefier) ​​are placed in a housing on the roof of the vehicle. There is only an internal air distributor in the vehicle. There is a through opening in the roof between the housing and the internal air distributor. In the assembled state of the air conditioning device, the transition between the housing and the roof must be sealed so that the liquid does not reach the interior space of the vehicle via the through opening. The problem is that, depending on the manufacturer, the roofs can be different from each other. Therefore, different sealing devices are required. In addition, different power levels can exist in one air conditioning device. This usually results in different component sizes and thus different housing sizes. Therefore, a variety of different sealing devices are required if necessary.

[0003] For example, DE 20 2017 102 919 U1 or JP H07-156 644A describe the sealing device of the air conditioning facility on the ceiling. For example, EP 3 411 250 B1 or JP S63-312 263A are devoted to the fixing of the air conditioning facility on the ceiling.

[0004] EP 3 109 078 describes a cover for an air conditioning system, into which components are installed. The lower housing half can be made of one or two parts. The design of an internal air distributor is known, for example, from DE 10 2021 000 190 A1. Summary of the invention

[0005] The invention is based on the object of specifying an air conditioning system which is characterized by simplified installation on the ceiling.

[0006] The invention achieves the object by an air conditioning device for mounting on a ceiling, the air conditioning device having a housing, an internal air distributor and a bracket, wherein in the assembled state the housing is placed on the bracket and the bracket is placed on the ceiling, and wherein the bracket is connected to or can be connected to at least one extension unit. A housing with corresponding components for a cooling circuit is placed on the bracket, which is placed on the ceiling in the assembled state. Thus, the bracket is located between the housing and the ceiling in the assembled state. The bracket is implemented here according to the design so that it matches the ceiling structure or matches a plurality of different ceiling structures. The bracket is also designed so that at least one extension unit can be connected to the bracket or the bracket is connected to the extension unit. Thus, the bracket as a whole allows supplementation with extension units.

[0007] One design solution is that in the mounted state the support is connected to at least one extension unit, and the housing is placed on the support or on at least one extension unit. In this design solution, the housing is so large that the support itself is not sufficient, but at least one extension unit is required, on which the housing is placed in addition to the support.

[0008] One design proposal is that the support has a mechanical interface and the extension unit has an interface corresponding to the mechanical interface. In this design proposal, the support and the extension unit are mechanically connected to each other. For this purpose, a corresponding interface or contour is provided. The interface is preferably located at the end side of the support and the extension unit.

[0009] One design solution is that the extension unit has a further mechanical interface, and the further mechanical interface is designed identically to the mechanical interface of the support. In this design solution, the extension unit has two interfaces: one interface is used for connection to the support and is thus implemented correspondingly to the interface of the support. The further interface allows connection to a further extension unit, wherein the further interface is implemented like the interface of the support. Thus, the support can be extended by any length one after another by means of a plurality of identical extension units.

[0010] One configuration provides that the mechanical interface of the support and the corresponding interface of the extension unit are designed and matched to one another in such a way that a dovetail connection is formed.

[0011] One embodiment consists in that the support is designed in the form of a plate.

[0012] One design solution provides that the bracket and / or the extension unit has a compensating structure, so that the compensating structure is facing the roof in the assembled state and serves to compensate for structures on the roof. The compensating structure compensates for structures on the roof, such as ridges or grooves, so that the structures form a flat supporting surface for the housing of the air conditioning system. The compensating structure thus compensates for elevations or depressions in the roof. In this case, the compensating structure is implemented for one type of vehicle roof in one design solution. In an alternative design solution, at least two different types of roofs can be compensated by the compensating structure.

[0013] One design solution proposes that the bracket and / or the extension unit has a positioning unit, which in the assembled state faces away from the ceiling and is used for relative orientation between the bracket or the extension unit and the housing. When the housing of the air conditioning system is assembled on the roof of a vehicle, there is usually the following difficulty, namely that the ceiling recess must be correctly positioned. For this reason, in the present design solution, the bracket and / or the extension unit has a positioning unit, which is used, for example, as a contact surface for the housing. Alternatively or in addition, the positioning unit is designed so that it can cause a form fit together with a section of the housing.

[0014] According to one design, the support and / or the extension unit is at least partially made of a material having a density of less than 100 kg per cubic meter. Thus, the material is preferably very light. In one design, the material is expanded polypropylene (EPP), having a density of, for example, 100 kg / m 3 and 20kg / m 3 between.

[0015] In one embodiment, a structure for sealing and / or compensating a surface of the ceiling is provided on the side of the bracket and / or the extension unit facing away from the housing and thus toward the ceiling.

[0016] One design of the air conditioning device provides that a compressor, a liquefier, an expansion device and an evaporator are arranged in a housing and form a cooling circuit. According to this design, all components for producing the cooling circuit are arranged in the housing and thus outside the space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In detail, there are many possibilities for designing and improving the air conditioning device according to the invention. For this, reference is made to the following description of the exemplary embodiments in conjunction with the accompanying drawings. The accompanying drawings show:

[0018] Figure 1 A schematic diagram showing a ceiling mounted air conditioning unit;

[0019] Figure 2 A top view showing the upper side of the bracket with the extension unit; and

[0020] Figure 3 Shown in Figure 2 Top view on the underside of the combination of bracket and extension unit. DETAILED DESCRIPTION

[0021] Figure 1 The structure of an air conditioning system for cooling a space 100 located under a ceiling 101 is schematically shown. In the implemented cooling circuit, a compressor (alternative name is a gas compressor) 201 compresses a gaseous refrigerant, which heats up and is transported to a liquefier (alternative name: condenser) 202 via a refrigerant line. In the liquefier 202, the heat of the refrigerant is output to the ambient air (or external air) from the environment surrounding the space via a heat exchanger not shown here. The liquid and still high-pressure refrigerant is reduced to a lower pressure in an expansion device 203, which is designed as a throttle valve, for example, thereby cooling the refrigerant. In the evaporator 204, the air is cooled via a further heat exchanger in such a way that the air transfers its heat energy to the refrigerant. As a result, the refrigerant is converted to a gaseous state. The gaseous refrigerant finally returns to the compressor 201 so that the cooling circuit can continue.

[0022] The space 100 is, for example, the interior space of a motorhome or camper. The components of the air conditioning system for realizing the refrigeration process are located in a housing 1, which is placed on a ceiling 101. In the space 100, there is an internal air distributor 2, through which the air from the space 100 - as the air to be temperature-controlled - is extracted and the air temperature-controlled by the air conditioning system is introduced into the space 100. The air distributor 2 is arranged on the inner side of the ceiling 101. There is a through ceiling recess between the components in the housing 1 on the ceiling 101 and the internal air distributor 2 below the ceiling 101. Through the ceiling recess, the air to be temperature-controlled reaches the housing 1 (or reaches the components located therein) and the temperature-controlled air reaches the air distributor 2. In the embodiment shown, there are a bracket 3 and an extension unit 4 between the housing 1 and the outer side of the ceiling 101. In the embodiment shown, the bracket 3 has a recess, which is located above the through recess in the ceiling 101 and below the opening of the housing 1.

[0023] Figure 2A support 3 is shown, which is connected to an extension unit 4. The support 3 has a recess through which the air is guided. At the end there is a mechanical interface 30 for connecting to the extension unit 4. The extension unit 4 has an interface 40 corresponding to the mechanical interface 30. It can be seen that a dovetail connection is formed in this way. At the other end of the extension unit 4 there is a further mechanical interface 41, which is designed in the same manner as the mechanical interface 30 of the support 3. This allows the extension unit 4 to be connected to a further identical extension unit 4 and thus to extend the entire device.

[0024] It can be seen that on the upper side of the support 3 there are two circular positioning units 31 which serve to mount the housing 1 relative to the support 3 .

[0025] exist Figure 3 3 and the extension unit 4 are shown. It can be seen that the corresponding compensation structures 32, 42, which form a through-channel in the embodiment shown. When mounted on the ceiling 101, the compensation structures 32, 42 are located between the elongated elevations of the ceiling 101. Thus, a smooth surface is formed on the upper side for the housing 1.

[0026] A circumferential groove can also be seen around the recess of the support 3 , into which a permanently elastic seal is introduced during assembly.

[0027] Reference numerals list

[0028] 1 Housing

[0029] 2 Internal air distributor

[0030] 3 Bracket

[0031] 4 Extension units

[0032] 30 Mechanical interface of the bracket

[0033] 31 Positioning unit

[0034] 32 Compensation structure

[0035] 40 Corresponding interface of extension unit

[0036] 41 Additional mechanical interfaces for extension units

[0037] 42 Compensation Structure

[0038] 100 Space

[0039] 101 Ceiling

[0040] 201 Compressor

[0041] 202 Liquefier

[0042] 203 Expansion device

[0043] 204 Evaporator

Claims

1. An air conditioning device for mounting on a ceiling (101), It comprises a housing (1), an internal air distributor (2) and a bracket (3), wherein in the assembled state, the housing (1) is placed on the bracket (3) and the bracket (3) is placed on the ceiling (101), and The support (3) is connected to at least one extension unit (4) or can be connected to at least one extension unit (4).

2. The air conditioning device according to claim 1, In the assembled state, when the bracket (3) is connected to at least one extension unit (4), the housing (1) is placed on the bracket (3) and on the at least one extension unit (4).

3. The air conditioning device according to claim 1 or 2, The support (3) has a mechanical interface (30), and The extension unit (4) has an interface (40) corresponding to the mechanical interface (30).

4. The air conditioning device according to claim 3, The extension unit (4) has a further mechanical interface (41), and The further mechanical interface (41) is designed identically to the mechanical interface (30) of the support (3).

5. The air conditioning device according to claim 3 or 4, The mechanical interface (30) of the bracket (3) and the corresponding interface (40) of the extension unit (4) are designed and matched with each other to form a dovetail connection.

6. The air conditioning device according to any one of claims 1 to 5, The support (3) is designed in the form of a plate.

7. The air conditioning device according to any one of claims 1 to 6, The support (3) and / or the extension unit (4) have a compensation structure (32, 42), The compensating structure (32, 42) faces the ceiling (101) in an assembled state, and The compensation structure (32, 42) is used to compensate for the structure on the ceiling (101).

8. The air conditioning device according to any one of claims 1 to 7, The support (3) and / or the extension unit (4) has a positioning unit (31), The positioning unit (31) faces away from the ceiling (101) in an assembled state, and The positioning unit (31) is used for relative orientation between the bracket (3) or the extension unit (4) and the housing (1).

9. The air conditioning device according to any one of claims 1 to 8, The support (3) and / or the extension unit (4) are at least partially made of a material having a density of less than 100 kg per cubic meter, and the material is preferably foamed polypropylene.

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