Suction device with two suction heads, and system

Abstract

The present invention relates to a suction device with a dust collection container for receiving material to be suctioned, wherein the material is suctioned in by means of a negative pressure generated in the suction device. The suction device has at least a first suction head and a second suction head for generating the negative pressure, wherein the first and the second suction heads can be attached to the dust collection container by means of an adapter device. In a second aspect, the invention relates to a system comprising such a suction device and a second dust collection container, wherein the first or the second suction head can be attached to the second dust collection container to create a functional second suction device.

Description

[0001] The present invention relates to a suction device with a dust collection container for receiving suction material, wherein the suction material is sucked in with the aid of a negative pressure generated in the suction device. The suction device has at least a first suction head and a second suction head for generating the negative pressure, wherein the first and second suction heads can be fastened to the dust collection container with the aid of an adapter device. In a second aspect, the invention relates to a system comprising such a suction device and a second dust collection container, wherein the first or second suction head can be fastened to the second dust collection container in order to create a functional second suction device. Background of the invention:

[0002] In the construction industry, vacuum cleaners, such as construction or industrial vacuum cleaners, are commonly used to collect dust or particles that may arise on a construction site. This is done both to keep the site clean and to protect workers on the site from inhaling the dust or particles. Such construction or industrial vacuum cleaners can also be used in trades, for example, to vacuum up dust in a workshop.

[0003] Obviously, the requirements for the suction device used can vary greatly. A small angle grinder will produce smaller amounts of dust than other dust-intensive applications. In addition to the amount of material to be vacuumed, the size of the particles can also vary, for example. This results in different requirements for the suction characteristics of the suction device.

[0004] The development of large, powerful suction devices is particularly complex, especially in applications requiring large volume flows or high flow velocities of the intake air stream. These can preferably be applications with very high removal rates, such as grinding surfaces, especially with large tools or grinding wheels, or cutting into a substrate, which could be made of concrete, for example.

[0005] The object underlying the present invention is to overcome the above-described deficiencies and disadvantages of the prior art and to provide a powerful suction device that can be provided with little development effort.

[0006] The problem is solved by the subject matter of the independent claims. Advantageous embodiments of the subject matter of the independent claims can be found in the dependent claims. Description of the invention:

[0007] According to the invention, a suction device is provided with a dust collection container for receiving suction material, wherein the suction material is sucked in with the aid of a negative pressure generated in the suction device. The suction device has at least a first suction head and a second suction head for generating the negative pressure, wherein the first and the second suction head can be fastened to the dust collection container with the aid of an adapter device. The invention makes it possible to provide a particularly powerful suction device because, by using the two suction heads, the volume flow or the flow velocity in the suction flow of the suction device can be almost doubled compared to suction devices with only one suction head. As a result, the proposed suction device can be used to perform tasks that require particularly high flow velocities or particularly large volume flows.To assemble the suction device, an existing dust collection container can be used, to which an adapter device is attached. The adapter device can preferably be designed as an adapter plate, wherein the adapter device preferably has a first interface for receiving the first suction head and a second interface for receiving the second suction head. The interfaces preferably represent receiving areas for receiving the suction heads. In this way, the suction heads can be securely and stably attached to the dust collection container. The dust collection container can have wheels in a manner known per se, so that the suction device can be easily and simply transported on a construction site or in a workshop.

[0008] The suction characteristics of a suction device can be defined primarily by the strength of the generated negative pressure and the volume flow of the intake air stream. The suction characteristics of the proposed suction device are characterized in particular by a particularly high flow velocity and a particularly large volume flow of the intake air stream. This makes the suction device particularly suitable for sucking up material that arises in applications with particularly high removal rates. High removal rates can occur, for example, when grinding concrete surfaces or cutting substrates such as concrete.

[0009] The vacuum heads can preferably be constructed identically or essentially identically. For example, a user can purchase two identical vacuum heads of a first power class and combine these two vacuum heads - together with a dust collection container and an adapter device - to form a proposed vacuum device. This advantageously provides the user with a vacuum device of a second power class, wherein the second power class is preferably characterized by a higher suction power than the first power class. In the context of the present invention, the suction power of a vacuum device is preferably defined by the volume flow or by the flow velocity, wherein, for example, the flow velocity in the suction flow that can be provided with the proposed vacuum device is approximately twice the flow velocity of an individual vacuum head.The same applies analogously to the volume flow. Of course, it may also be preferred within the meaning of the invention for different suction heads to be combined to form a proposed suction device. In other words, within the meaning of the invention, it is preferred for the first and second suction heads to have substantially the same or different performance levels.

[0010] The suction heads preferably each have a motor, a turbine, and a filter device. According to the invention, it is preferred that the first suction head has a first motor, a first turbine, and a first filter device, while the second suction head has a second motor, a second turbine, and a second filter device. The motors of the suction heads are preferably designed to drive the turbines of the suction heads, wherein the turbines of the suction heads are preferably designed to generate a negative pressure inside the suction heads. The negative pressure is preferably used to suck in the suction material. The suction of the suction material preferably occurs in that the negative pressure generates an (intake) suction flow with which the suction material can be sucked in. For this purpose, the suction device can be connected to a suction hose in order to transfer the negative pressure to a suction location or to guide the suction flow.The suction hose can preferably have a diameter of greater than 30 mm, preferably greater than 35 mm, and particularly preferably greater than 42 mm. Of course, suction hoses with different diameters are also conceivable. The suction device can have one or more openings, whereby the suction hose can be connected to the suction device via these openings. The openings can - as explained further below - be arranged on the adapter device and / or on the suction heads. Within the meaning of the invention, it can also be preferred for the dust collection container to have an inlet opening for the suction hose.

[0011] During operation of the suction device, the suction flow comprises a mixture of air and suction material. In other words, the air forming the suction flow contains dust and particles. This mixture of air and suction material enters the interior of the suction device via the suction hose and the openings of the suction device. According to the invention, it is preferred that the suction material separates from the suction flow and collects in the dust collection container. However, small residual amounts of the suction material can remain in the suction air flow and enter the suction heads. Such suction material is undesirable in the suction head because it can pose a danger to the turbine and / or the motor of the suction device. To prevent suction material from being sucked into the suction heads, the suction heads have filter devices that are arranged upstream of the turbine and / or the motor in the suction direction.In the context of the invention, this preferably means that the suction flow must first pass through the filter device before reaching a region of the suction head in which the turbine and / or the motor of the respective suction head are located. As the suction flow passes through the filter device, most of the remaining suction material is filtered out of the suction flow, so that the suction flow leaves the filter device essentially free of suction material. This effectively prevents the risk of damage to the turbine and / or the motor of the suction head.

[0012] The suction material filtered out by the filter devices of the suction heads can form a filter cake in the filter devices, so that the filter devices must be cleaned from time to time. According to the invention, it is preferred that the first and second suction heads each have a filter device, wherein the filter devices of the suction heads can be cleaned essentially alternately. Through the innovative use of two suction heads in the context of the present invention, the filter devices of the suction heads can be cleaned alternately, so that at least one suction head is available for performing the suction operation at any one time.In this way, the proposed suction device can ensure continuous suction operation because - even if the filter device of one of the two suction heads is being cleaned - at least the other suction head is always not cleaned and can maintain suction operation. If there is no need for cleaning, both suction heads can also work together and ensure suction operation. The phrase "alternately cleaned" within the meaning of the invention does not mean that only one suction head is always available to carry out suction operation. Rather, the phrase "alternately cleaned" means that the filter devices of both suction heads are not cleaned simultaneously. Therefore, within the meaning of the invention, it is preferred that the filter devices of the suction heads are not cleaned simultaneously, but alternately.

[0013] It is particularly preferred within the meaning of the invention that the first and second suction heads are operated in parallel. The parallel operation of the suction heads of the proposed suction device enables a particularly high flow velocity to be generated in the suction stream, whereby the flow velocity in the suction stream of the proposed suction device can reach almost twice the flow velocity of a single suction head. In other words, the invention enables almost double the flow velocity compared to suction devices with only one suction head of the same performance class. As a result, the invention provides a particularly powerful suction device that is particularly suitable for performing tasks with high flow velocity requirements.The negative pressure, which, together with the flow velocity, determines the suction behavior of the suction device, remains essentially unchanged by the parallel operation of the suction heads. This is especially true when the cross-section of the suction hose is also increased, in particular doubled.

[0014] Due to the parallel operation of the suction heads of the proposed suction device, the volume flow of the suction flow can also reach almost twice the volume flow of a single suction head. In other words, the invention enables a nearly doubled volume flow compared to suction devices with only one suction head of the same performance class. Thus, the invention can provide a particularly powerful suction device in terms of volume flow, which is particularly suitable for performing tasks with high volume flow requirements.

[0015] According to the invention, it is preferred that the first and second suction heads can be supplied with electrical energy by means of a power supply device and / or a mains connection. According to the invention, this preferably means that the suction heads can be connected to power supply devices, such as batteries or accumulators, in order to be supplied with electrical energy. The power supply devices can preferably be replaceable and rechargeable, so that an "empty" power supply device can be quickly and easily replaced with a new, "fresh" power supply device. According to the invention, it may also be preferred that the suction heads be supplied with electrical energy via a mains connection.Furthermore, the vacuum heads can be hybrid devices that can be supplied with electrical energy via a mains connection and are also suitable for operation with power supply devices. It can also be preferred within the meaning of the invention for the vacuum heads to be supplied with electrical energy via a mains adapter. A mains adapter can have the external shape of a power supply device and can be accommodated in the receiving space for a power supply device. The mains adapter can be connected to a mains connection and supplied with electrical energy in this way. It is preferred within the meaning of the invention for the first and second vacuum heads to be supplied with electrical energy in the same way.However, within the meaning of the invention, it may also be preferred for the first suction head to be connectable to a power supply device in order to receive electrical energy, while the second suction head is supplied with electrical energy via a mains connection or a mains adapter, or vice versa. This flexibility allows the suction device to particularly well meet the requirements of a construction site where a power grid is not always available. By using power supply devices, the user of the suction device is in control of supplying the suction device with electrical energy and can ensure the smooth execution of suction work on the construction site.

[0016] According to the invention, it is preferred that the first and second vacuum heads each comprise a connection for a suction hose. In this embodiment of the invention, it is preferred that each of the vacuum heads comprises an opening for connecting a suction hose. The suction hose connections can be connected to short suction hose sections, which are joined together to form a suction hose in close proximity to the vacuum cleaner. This allows the adapter device to be kept particularly flat and its construction particularly simple. The construction with the short suction hose sections, which are joined together to form a suction hose, can preferably be referred to as a Y-connection section.This embodiment of the invention offers the advantage that the openings in the suction heads, which are typically used for connecting the suction hose and are usually located on the front side of the suction heads, can be used to connect the suction hose of the present suction device. By utilizing the openings already present on the suction heads for connecting a suction hose, the effort required to assemble the components of the proposed suction device can be kept to a minimum, and its assembly and commissioning can be simplified.

[0017] In an alternative embodiment of the invention, it is preferred that the adapter device comprises a connection for a suction hose. The adapter device preferably has an opening to which the suction hose can be connected. This preferred embodiment of the invention allows the suction hose to be specially designed and, in particular, a Y-connecting section for the suction hose can be dispensed with. In this embodiment of the invention, the suction hose opens into an opening in the adapter device so that the suction material contained in the suction flow can fall directly into the dust collection container. The openings in the suction heads, which are usually used to connect the suction hose and are usually arranged on a front side of the suction heads, are preferably closed in this embodiment of the invention.

[0018] The adapter device can preferably comprise fastening means so that the vacuum heads can be attached stably and robustly to the adapter device and thus to the collection container of the vacuum device. The adapter device can have a line section in the area of ​​the suction hose connection, with which the incoming vacuum material can be guided into the dust collection container. This line section can, for example, comprise a pipe bent by 90 degrees or substantially 90 degrees, with which the vacuum material can be guided from the connection point of the adapter device into the dust collection container. According to the invention, it is preferred that the sucked-in air-particle mixture is distributed in the dust collection container and then flows upwards in a spatial direction towards the vacuum heads. The vacuum material can preferably separate in the dust collection container and remain there until the dust collection container is emptied.The remaining suction flow flows to the filters of the suction heads to further separate particles.

[0019] According to the invention, it is preferred that the suction device has means for detecting the suction heads and / or their correct attachment to the adapter device. Preferably, the detection means can be based on Bluetooth communication or radio frequency ID (RFID) technology. By providing means for detecting the suction heads, it can be ensured that the suction heads are correctly attached to the suction device or the interfaces provided for them. According to the invention, it is preferred that the suction device can only be put into operation when the suction heads are correctly attached and flawless operation of the suction heads can be expected.

[0020] It is preferred according to the invention that the first and second suction heads can be operated independently of one another or in a coordinated manner. For example, the suction device can be designed such that inputs such as switching on and off only need to be made on one of the suction heads, but are applied by the suction device simultaneously or essentially simultaneously for both suction heads. If the user wants to start the suction device, it may be sufficient, for example, to press a power button on the first or second suction head. The switch-on command is then forwarded internally - i.e. within the suction device - so that both suction heads begin running.

[0021] In order to make inputs, the suction heads may have input or control panels, wherein the input or control panels may in turn have input elements such as switches, knobs, buttons or rotary switches, but are not limited to these.

[0022] Alternatively or additionally, a remote control can be provided to control the first and / or second vacuum head. In this case, too, an input received, for example, by the second vacuum head can be forwarded to the first vacuum head, so that, for example, a switch-on command received by the second vacuum head also causes the first vacuum head to be switched on, causing its motor to start running.

[0023] Coordinated operation of the suction heads can be enabled by a communication connection between the suction heads. The suction device can preferably comprise a communication connection, which can preferably be wired or wireless. The communication connection exists in particular between the two suction heads of the suction devices. The communication connection can be formed, for example, by shared cabling of the suction heads and a control device of the suction device. The control device of the suction device can, for example, comprise electronics with which the suction heads can be controlled in a coordinated manner. It can also be preferred within the meaning of the invention for the communication connection to be wireless.In this embodiment of the invention, the suction heads can comprise communication devices with which data or control commands can be exchanged between the suction heads. The communication connection is preferably bidirectional, so that the data or control commands can be transmitted from the first to the second suction head and vice versa. Within the meaning of the invention, it is preferred that the first suction head has a first communication device, while the second suction head has a second communication device, wherein the communication connection can preferably be formed between the first and second communication devices.

[0024] In a second aspect, the invention relates to a system with a proposed suction device. The terms, definitions, and technical advantages introduced for the suction device preferably apply analogously to the system. The system has at least one second dust collection container, wherein the first suction head or the second suction head can be fastened to the second dust collection container to create a functional second suction device. It is preferred within the meaning of the invention that the proposed suction device, which is referred to as the first suction device in the following description, can be disassembled. The collection container of the first suction device is accordingly preferably referred to as the first collection container. The suction heads can then be used individually and - preferably without an adapter device - combined with other dust collection containers to create further functional suction devices.For example, the proposed first suction device can be converted into two functional—preferably smaller—suction devices if sufficient second collection containers are available. The proposed first suction device can thus form the basis for a modular system of suction devices in which at least two suction heads can be combined with at least two dust collection containers. The suction heads are preferably designed so that they can be connected both to the interfaces of the adapter device of the first suction device and to the second dust collection container. The inventor recognized that the different requirements for industrial and construction vacuum cleaners can be met by providing a modular system.The invention makes it possible to provide a particularly powerful modular suction device system, which is "powerful" in the sense that the first suction device, as the core of the modular system, is characterized by a particularly high flow velocity of the intake air stream. Particularly high volume flows can advantageously be achieved with the first suction device.

[0025] According to the invention, it is preferred that the first suction device is operated in a first power class, while the second suction device is operated in a second power class. In the context of the invention, the term "power class" is defined by the flow velocity of the suction flow or its volume flow with which the suction material is sucked in by the suction devices. In other words, according to the invention, it is preferred that the first suction device has a first flow velocity of the suction flow, while the second suction device has a second flow velocity of the suction flow. Preferably, the first flow velocity of the first suction device is approximately twice as high as the second flow velocity of the second suction device.Preferably, the suction flow of the first suction device has a first volume flow, while the suction flow of the second suction device has a second volume flow. Preferably, the first volume flow of the first suction device is approximately twice as large as the second volume flow of the second suction device. By comprising suction devices with different power classes, the proposed modular system can provide a high level of flexibility for the user of the modular system. Depending on the task to be performed and the requirements for the suction behavior associated with the task to be performed, the user can select a specific suction device with a suitable suction behavior and configure the desired suction device to suit their needs.

[0026] According to the invention, it is preferred that the second dust collection container has a smaller volume than the dust collection container of the suction device. Therefore, in the context of the present invention, two smaller, substantially identical suction devices can be disassembled, and the suction heads of the two smaller suction devices can be used to create a first suction device—together with an adapter device and a first collection container. Because the first dust collection container preferably has a larger volume than the second dust collection container, the first suction device can suck in and store a particularly large volume of material before the first dust collection container of the first suction device needs to be emptied. The two smaller second suction devices are advantageously particularly handy and compact and can be used particularly easily and simply on a construction site.

[0027] Further advantages emerge from the following description of the figures. The figures, the description, and the claims contain numerous features in combination. The skilled person will expediently consider the features individually and combine them into further meaningful combinations.

[0028] In the figures, identical and similar components are numbered with the same reference numerals. They show: Fig. 1View of a preferred embodiment of the suction device with two suction heads Fig. 2View of a preferred embodiment of the suction device with an opening for the suction hose in the adapter device Fig. 3View of a preferred embodiment of the suction device with a Y-connecting section Fig. 4View of a preferred embodiment of the modular system Fig. 5, 6Views of a preferred embodiment of the adapter device Examples of implementation and description of figures:

[0029] Figure 1shows a preferred embodiment of the first suction device 10 with two suction heads 14, 16. On the left side of Figure 1 The individual components of the first suction device 10 are shown; on the right-hand side 1, an assembled first suction device 10 can be seen. The first suction device 10 comprises a dust collection container 12, which can comprise transport means, such as wheels or rollers, in a manner known per se, in order to be moved around a construction site. While in conventional suction devices, as known from the prior art, a suction head is placed directly onto the dust collection container to obtain a suction device, in the context of the present invention, an adapter device 18 is proposed, with which the suction heads 14, 16 can be attached to the dust collection container 12. The adapter device 18 has a first interface 34 and a second interface 36 (shown in Figure 2), wherein the first vacuum head 14 can be attached to the dust collection container 12 with the first interface 34, while the second vacuum head 16 can be attached to the dust collection container 12 with the second interface 36. The interfaces 34, 36 preferably represent receiving areas for receiving the vacuum heads 14, 16. For example, recesses can be provided in the adapter device 18, into which the vacuum heads 14, 16 can be inserted. The adapter device 18 or the interfaces 34, 36 can comprise electrical and / or mechanical components. As a result, the vacuum heads 14, 16 can, on the one hand, be mechanically attached, so that a stable and robust vacuum device 10 is obtained. On the other hand, an electrical or electronic connection can be established between the adapter device 18 and the vacuum heads 14, 16. This electrical orThe electronic connection can, for example, comprise a communication connection with which data or control commands are exchanged between the adapter device 18 and the suction heads 14, 16. According to the invention, it is preferred that the suction heads 14, 16 can communicate directly with one another. Alternatively or additionally, the suction heads 14, 16 can communicate with one another with the involvement of the adapter device 18. In other words, there are preferably communication connections between the adapter device 18 and the first suction head 14, between the adapter device 18 and the second suction head 16, and between the suction heads 14, 16. The communication connections can each be wireless or wired.

[0030] The adapter device 18 can comprise means 32 for detecting the suction heads 14, 16. Using these means 32 for detecting the suction heads 14, 16, the suction device 10 can detect whether the suction heads 14, 16 are present. Alternatively or additionally, the means 32 for detecting the suction heads 14, 16 can be configured to detect whether the suction heads 14, 16 are correctly attached to the adapter device 18. Preferably, the suction device 10 can only be switched on when the means 32 for detecting the suction heads 14, 16 give a "green light," i.e., when the suction heads 14, 16 are present and / or correctly attached to the adapter device 18.

[0031] The adapter device 18 can include a connection 28 for a suction hose 30. The adapter device 18 preferably includes an opening 28 to which the suction hose 30 of the suction device 10 can be connected. The suction hose 30 can be designed in a conventional manner and preferably has a diameter of more than 42 mm. The opening 28 for receiving the suction hose 30 preferably has a round or substantially round, circular base.

[0032] Figure 2shows a preferred embodiment of the suction device 10 with an opening 28 for the suction hose 30 in the adapter device 18. In this embodiment of the invention, it is preferred that a suction channel (not shown) is formed within the adapter device 18, wherein the suction channel fluidically connects the opening 28 to the suction heads 14, 16. The suction channel can be provided so that a fluidic connection exists between the interiors of the suction heads 14, 16 and the opening 28 of the adapter device 18, so that the suction flow or the negative pressure generated by the motors or turbines of the suction heads 14, 16 can be transferred through the suction channel to the suction hose.

[0033] The suction heads 14, 16 also have connections 28 for connecting to the suction hose 30. However, these openings 28 are closed in this embodiment of the invention, since the suction hose 30 is attached to the connection 28 of the adapter device 18.

[0034] In addition, Figure 2 The interfaces 34, 36 of the preferably plate-shaped adapter device 18 are shown. The suction heads 14, 16 can be attached to the adapter device 18 and thus to the dust container 12 of the suction device 10 using the interfaces 34, 36, thus creating a functional first suction device 10. The interfaces 34, 36 can preferably be mechanical and / or electrical or electronic interfaces. Within the meaning of the invention, this preferably means that the interfaces 34, 36 can comprise mechanical and / or electrical or electronic components.

[0035] Furthermore, Figure 2 The filter devices 20, 22 of the suction heads 14, 16 are indicated. The filter devices 20, 22 are actually arranged inside the suction heads 14, 16, so that the filter devices 20, 22 are not visible from the outside. The schematic bars 20, 22 thus indicate only one of many possible and preferred positions of the filter devices 20, 22.

[0036] Figure 3 shows an alternative preferred embodiment of the suction device 10, wherein the Figure 3 The suction device 10 shown has a Y-connecting section 40 for connecting the suction hose 30 to the suction heads 14, 16. In the Figure 3In the illustrated embodiment of the invention, the openings 28 of the suction heads 14, 16 are used to connect the suction hose 30 to the suction device 10. Since the suction device 10 has at least two connection options 28 for the suction hose 30 due to the at least two suction heads 14, 16, a Y-connecting section 40 is provided which connects the connection openings 28 of the suction heads 14, 16 to the suction hose 30. The end of the suction hose 30 which is to be connected to the suction device 10 preferably branches into two short end sections 24, 26 which, together with the suction hose 30, form the Y-connecting section 40. The short end sections 24, 26 are each connected to the connection openings 28 of the suction heads 14, 16, so that a connection is created between the suction hose 30 on the one hand and the suction device 10 or its suction heads 14, 16 on the other side.In this way, the adapter device 18 can be particularly flat and compact. In the embodiment shown in . Figure 3 In the illustrated embodiment of the invention, the adapter device does not have a connection opening 28 for the suction hose 30. It is preferred within the meaning of the invention that the end portion 24 of the first suction head 14 is connected to the connection opening 28 of the first suction head 14, while the end portion 26 of the second suction head 16 is connected to the connection opening 28 of the second suction head 16.

[0037] Figure 4 shows a preferred embodiment of the modular suction device system 100. The system 100 comprises a first suction device 10, which is formed from a first dust collecting container 12, an adapter device 18 and a first suction head 14 and a second suction head 16 (lower half of the Figure 4 ). The suction heads 14, 16 can originate from second suction devices 50, which are arranged in the upper half of the Figure 4are shown. The second suction devices 50 each comprise a second dust collection container 52, wherein the volume of the second dust collection containers 52 of the second suction devices 50 is preferably smaller than the volume of the first dust collection container 12 of the first suction device 10. For example, two second suction devices 50 can be provided, the suction heads 14, 16 of which are used to assemble a new first suction device 10. For this purpose, the suction heads 14, 16 of the two second suction devices 50 can be combined with an adapter device 18 and a first dust collection container 12, so that a functional first suction device 10 is obtained.

[0038] Figure 4 has the structure of a mathematical equation, with the upper half of Figure 4 the individual summands are shown, which are added together (equal sign in the middle of the Figure 4) to obtain a new first suction device 10 (see: lower half of Figure 4 ). The Figure 4 The mathematical equation shown is not balanced in that at least the two second collecting containers 52 of the second suction devices 50 are missing on the lower half. It is pointed out that Figure 4 is intended to illustrate the principle of the proposed modular system 10 and no exact mathematical correction of the mathematical equation presented is sought.

[0039] In addition, Figure 4a remote control 38 with which the suction devices 10, 50 or their suction heads 14, 16 can be operated remotely. According to the invention, it is preferred that the first suction head 14 and the second suction head 16 can be operated independently of one another or in concert with one another. The suction devices 10, 50 or their suction heads 14, 16 can be operated manually—for example, via operating elements (without reference numerals)—or remotely using the remote control 38.

[0040] The Figures 5 and 6 show a preferred embodiment of the adapter device 18 from different perspectives. Figures 5 and 6 The adapter device 18 shown has a first interface 34 for receiving the first suction head 14 and a second interface 36 for receiving the second suction head 16. In the Figures 5 and 6In the illustrated embodiment of the adapter device 18, the adapter device 18 has a connection 28 for the suction hose 30. In this embodiment of the invention, any connections 28 on the suction heads 14, 16 are preferably closed, and the connection 28 of the suction hose 30 is made with the aid of the adapter device 18. The adapter device 18 can have a bent line section (not shown) with which the suction material S can be guided into the dust collection container 12. List of reference symbols

[0041] 10 (First) suction device 12 (First) dust container 14 First vacuum head 16 Second vacuum head 18 Adapter device 20 First filter device 22 Second filter device 24 End section of the first vacuum head 26 End section of the second vacuum head 28 Connection for a suction hose 30 Suction hose 32 Means for detecting the vacuum heads 34 First interface 36 Second interface 38 Remote control 40 Y-connection section 50 Second suction device 52 Second dust container 100 System

Claims

1. Suction device (10) with a dust collecting container (12) for receiving suction material, wherein the suction material is sucked in by means of a negative pressure generated in the suction device, characterized in that the suction device (10) has at least a first suction head (14) and a second suction head (16) for generating the negative pressure, wherein the first suction head (14) and the second suction head (16) can be fastened to the dust collection container (12) with the aid of an adapter device (18).

2. Suction device (10) according to claim 1 characterized in that the first suction head (14) and the second suction head (16) are operated in parallel.

3. Suction device (10) according to claim 1 or 2 characterized in that the first suction head (14) and the second suction head (16) each have a filter device (20, 22), wherein the filter devices (20, 22) of the suction heads (14, 16) can be cleaned essentially alternately.

4. Suction device (10) according to one of the preceding claims characterized in that the adapter device (18) comprises a connection (28) for a suction hose (30).

5. Suction device (10) according to one of claims 1 to 3 characterized in that the first suction head (14) and the second suction head (16) each comprise a connection (28) for a suction hose (30).

6. Suction device (10) according to claim 5 characterized in that the first suction head (14) and the second suction head (16) are each connected to an end section (24, 26) of a Y-connecting section (40) in order to establish a connection between the suction hose (30) and the suction device (10).

7. Suction device (10) according to one of the preceding claims characterized in that the adapter device (18) has a first interface (34) for receiving the first suction head (14) and a second interface (36) for receiving the second suction head (16).

8. Suction device (10) according to one of the preceding claims characterized in that the suction device (10) has means for detecting the suction heads (14, 16) and / or their correct attachment to the adapter device (18).

9. Suction device (10) according to one of the preceding claims characterized in that the first suction head (14) and the second suction head (16) can be operated independently of one another or in coordination with one another.

10. Suction device (10) according to one of the preceding claims characterized in that a remote control (38) is provided for controlling the first suction head (14) and / or the second suction head (16).

11. Suction device (10) according to one of the preceding claims characterized in that the first suction head (14) and the second suction head (16) have substantially the same or different performances.

12. System (100) comprising the suction device (10) according to one of the preceding claims characterized in thatthe system (100) comprises a second dust collection container (52), wherein the first suction head (14) or the second suction head (16) can be fastened to the second dust collection container (52) in order to produce a functional second suction device (50).

13. System (100) according to claim 12 characterized in that the second dust collection container (52) has a smaller volume than the dust collection container (12) of the suction device (10).

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