Cleaning system and fire protection system

Abstract

The invention relates to a cleaning system (110) comprising a transport device (112) for conveying cleaning material (114), wherein the transport device (112) comprises: - at least one driven conveying element (116) for conveying the cleaning material (114) along a conveying track, - at least one braking element (118) for stopping the transport of the cleaning material (114) in a closed state of the braking element (118), - at least one emergency control (120) configured to bring the brake element (118) into the closed position in an emergency, wherein the brake element (118) is designed to block the conveying of the material to be cleaned (114) by laterally engaging the conveying track when in the closed position. The invention further relates to a fire protection system (122).

Description

Technical field

[0001] The invention relates to a cleaning system for cleaning items, comprising a transport element and a fire protection system. The cleaning system and the cleaning unit of the type mentioned can be used, for example, in the field of dishwashing technology, particularly in commercial dishwashing. The invention is especially applicable to commercial kitchens where items for the preparation, storage, and serving of food and beverages, such as trays, plates, dishes, and cutlery, need to be cleaned in large quantities. The invention specifically relates to the handling of soiled items in a dining hall and their transport to a dishwashing area, describing structural and / or control measures to ensure fire safety.

[0002] However, other types of cleaning systems, transport elements, dishwashers and / or items to be cleaned can also be modified according to the invention, and / or the invention can be used to clean other types of items to be cleaned. Technical background

[0003] In most cases involving commercial catering and / or institutional food service, the dishwashing area is located in a separate room from the dining area. A tray may be placed by a diner onto a conveyor system, usually with at least two belts, in the dining area. From there, the tray is conveyed by the conveyor system through an opening in a wall into the dishwashing area. This wall often also serves as a fire wall, so a fire-resistant damper may be installed in the opening, which closes in the event of a fire. When the fire-resistant damper closes, it must be reliably ensured that no tray is within the opening to meet safety requirements.It must therefore be ensured that the fire protection valve is designed in such a way that no cleaning material is in the area of ​​the valve when the valve is triggered and closes.

[0004] Since the area where guests place their items, especially trays, onto the conveyor system is often located in the dining room, space and design aspects play a crucial role. For example, the entire visible area of ​​the conveyor system is finished with a continuous granite surface. Furthermore, the loading area for the items, i.e., the trays, is generally designed to be as short as possible. This results in short conveyor sections and therefore minimal build-up areas in front of the fire wall or the sliding gate. Adding to the complexity, it can usually be assumed that in an emergency, the regular power supply to the dishwasher and the conveyor system will be interrupted.

[0005] There are various systems known that ensure that the wall opening associated with the slide is clear when it is closed.

[0006] Often, several conveying elements and their drives are operated individually, with a particular distinction made between an upstream and a downstream section of the slide gate. To ensure that the slide gate area is free of material to be cleaned, the outgoing conveying element downstream of the slide gate is frequently supplied with emergency power, while the upstream conveying section is deactivated.

[0007] Sometimes, an alternative restraint device or braking element is provided in front of the slide gate opening, along with a continuous conveying system. In the event of a fire, the conveying system remains in motion, at least for a certain period. The conveyed cleaning items, particularly the trays, are blocked by the restraint device. Typically, the restraint device is moved upwards from the bottom of the conveyor body, so that subsequent trays rest against it and are mechanically secured against further conveyance. In this way, the area into which the fire-resistant slide gate would fall in an emergency is cleared.

[0008] To accommodate different widths and designs of items being cleaned, especially trays, these restraint devices are often installed in the center of the conveyor track. This is frequently visually unappealing and difficult to clean. Furthermore, in an emergency, a pin and / or bolt moves upwards into the conveyor. However, if the restraint device is activated, a tray located above it may be deflected upwards at an angle. This can create an inclined plane that acts as a ramp for subsequent trays, potentially causing them to jam uncontrollably or leading to the fall of additional items from the tray. In this case, the fire safety gate's intended function is not guaranteed.To counteract this and prevent further malfunctions, such a retaining device must be installed at a distance from the fire protection damper that is significantly greater than the length of a tray, e.g., at least 700 mm. This cannot always be implemented due to available installation space. Object of the invention

[0009] It would therefore be desirable to provide a cleaning system and a fire protection system for cleaning items that at least largely avoid the disadvantages of known devices and methods of the aforementioned type.

[0010] In particular, a safe cleaning system should be provided that, in the event of an emergency, such as a fire, enables reliable isolation between different rooms of a building, especially a dishwashing area and a dining room.

[0011] In particular, an efficient and / or cost-effective fire protection system should continue to be provided, which especially includes a safe and reliable emergency control system.

[0012] In particular, the cleaning system and / or the fire protection system should continue to be easy and effective to clean. General description of the invention

[0013] This task is addressed by a cleaning system and a fire protection system with the features of the independent patent claims. Advantageous further developments, which can be implemented individually or in any combination, are described in the dependent claims.

[0014] In the following, the terms "have," "exhibit," "comprise," or "include," or any grammatical variations thereof, are used in a non-exclusive manner. Accordingly, these terms can refer both to situations in which, apart from the features introduced by these terms, no other features are present, and to situations in which one or more additional features are present. For example, the expression "A has B," "A exhibits B," "A comprises B," or "A includes B" can refer both to the situation in which, apart from B, no other element is present in A (i.e., a situation in which A consists solely of B) and to the situation in which, in addition to B, one or more other elements are present in A, such as element C, elements C and D, or even further elements.

[0015] Furthermore, it should be noted that the terms "at least one" and "one or more," as well as grammatical variations of these terms, when used in connection with one or more elements or features and intended to express that the element or feature may be present once or multiple times, are generally used only once, for example, when the feature or element is first introduced. Upon subsequent mention of the feature or element, the corresponding term "at least one" or "one or more" is generally no longer used, without restricting the possibility that the feature or element may be present once or multiple times.

[0016] Furthermore, the terms "preferably," "in particular," "for example," or similar terms are used in the following text in connection with optional features without limiting alternative embodiments. Features introduced by these terms are optional features, and it is not intended that these features limit the scope of protection of the claims, and in particular the independent claims. As the person skilled in the art will recognize, the invention can also be implemented using other embodiments. Similarly, features introduced by "in one embodiment of the invention" or by "in an exemplary embodiment of the invention" are understood as optional features without limiting alternative embodiments or the scope of protection of the independent claims.Furthermore, these introductory expressions are intended to leave all possibilities of combining the features introduced herein with other features, whether optional or non-optional features, unaffected.

[0017] In a first aspect of the present invention, a cleaning system is proposed. The term "cleaning," as used here, is a broad term and should be understood in its usual and common sense, as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a process in which items to be cleaned are freed from adhering macroscopic or microscopic contaminants and / or in which such contaminants are at least partially removed. Additionally, a disinfection effect can optionally be achieved.

[0018] The term "cleaning plant," as used here, is a broad term and should be interpreted according to its usual and common meaning as understood by a person skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to at least one element of a technical installation, wherein the technical installation is designed for cleaning items. The cleaning plant includes a transport device for conveying items to be cleaned. The term "transport device," as used here, is a broad term and should be interpreted according to its usual and common meaning as understood by a person skilled in the art. The term is not limited to any specific or adapted meaning.The term can, without limitation, refer in particular to any device that is configured to set at least one element, upon which the transport device acts, into motion, especially into linear motion. The transport device can be configured to feed items to a dishwasher, thus transporting items at least to the vicinity of the dishwasher. The transport device can be designed to preferably transport trays, whereby further items to be cleaned, especially plates, glasses, and / or cutlery, may be arranged on the tray.

[0019] The term "items to be cleaned," as used here, is a broad term and should be understood according to its usual and common meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without restriction, the term can refer to any items that can be cleaned in the cleaning device. This may involve cleaning a single item, or cleaning several items simultaneously or sequentially. In particular, the items to be cleaned may include objects used directly or indirectly for the preparation, storage, and / or serving of food and / or beverages, such as dishes, cutlery, trays, bowls, glasses, cups, pots, pans, or similar items.Accordingly, the dishwasher can also be designed as a dishwashing machine, for example, as a dishwashing machine for commercial use in large kitchens or catering kitchens. Trays, especially trays on which further items to be cleaned, specifically plates, glasses and / or cutlery, can be arranged, can be of particular importance for the present invention.

[0020] The transport device comprises at least one driven conveying element for transporting the item to be cleaned along a conveying track. The term "conveying element," as used here, is a broad term and should be understood in its usual and common sense, as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to any element designed for transporting at least one object. The conveying element can transport the object from a first location to a second location. The conveying device can engage the item to be cleaned in such a way that it is set in motion by means of a positive and / or non-positive connection. The conveying element can be selected from the group consisting of a driven roller conveyor, a conveyor belt, a plate conveyor, a belt conveyor, or a conveyor chain.

[0021] The conveying element can define a "conveyor track" for the items to be cleaned, in particular such that the items being transported and / or conveyed by the conveying element follow the conveyor track. Alternatively or additionally, the conveyor track can be defined, in particular by a guide. The guide can be designed, in particular by at least one, especially lateral, contact surface for the conveyed items to be cleaned, which, alternatively or additionally, is designed such that the items to be cleaned are guided in the conveyor track above the conveying element. The guide can be, in particular, a tray guide that has been optimized, for example, for specified tray widths, lengths, and / or heights.The conveying track can be provided above the conveying element, in particular in such a way that the positive and / or force-fit connection between the conveying element and the item being cleaned results at least partially from the effect of gravity on the item being cleaned.

[0022] The driven conveying element can be driven by a drive. The term "drive," as used here, is a broad term and should be understood in its ordinary and common sense, as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to an actuator configured to generate and / or transmit motion. In particular, the drive can comprise at least one electromechanical energy converter configured to convert electrical energy into mechanical energy, especially rotational energy. In particular, the drive can comprise at least one motor, especially an electric motor. The drive can furthermore be in a frictional connection with the conveying element, in particular via a shaft.The drive can be configured to effect the conveying movement of the conveying element, particularly in a conveying direction. The drive can be configured so that, during its operation, the conveying element transports the material to be cleaned, particularly in the conveying direction.

[0023] The transport device further comprises at least one braking element for stopping the transport of the item to be cleaned when the braking element is closed, wherein the braking element is designed to block the transport of the item to be cleaned in the closed state by laterally engaging the conveyor track. The item to be cleaned can be a tray. Additional items to be cleaned, for example dishes, can be placed on the tray.

[0024] The term "braking element," as used here, is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, shall be attributed. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to any component that reduces and / or stops the movement and / or speed of an object. The braking element can thus have at least two states. The braking element can, in particular, have a first state, i.e., a closed state, in which the braking element prevents and / or blocks the conveyance of the item being cleaned, in particular so that the item being cleaned comes to a standstill. The braking element can, in particular, have a second state, i.e., an open state, in which the braking element allows the conveyance of the item being cleaned.In the "closed state," the braking element can act directly on the item being cleaned. For example, the braking element can act on the item being cleaned in such a way that it completely counteracts the force exerted on the item by the transport element to enable its transport, and the item being cleaned remains stationary.

[0025] The transport device can be configured such that the conveying element can be driven independently of the braking element, particularly even when the braking element is closed. The braking element can be designed to block the material being cleaned while allowing the conveying element to remain driven. For example, the braking element can be designed such that, when closed, the material being cleaned is conveyed by the conveying element against the braking element in such a way that it ultimately rests against the braking element, exerting a force on the material being cleaned in the opposite direction to the conveying direction of the conveying element. In this way, the braking element can block the conveying of the material being cleaned.

[0026] The term "lateral," as used here, is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer, in particular, to the spatial position of a first element relative to a second element, where the first element is offset from the second element in a horizontal direction. For example, the weight of the item being cleaned can define a vertical spatial direction. The conveying direction can define a first horizontal spatial direction. A third spatial direction, or second horizontal spatial direction, can be defined as a direction perpendicular to both the vertical and the first horizontal spatial directions.This third spatial direction can be defined as a "lateral direction", and two elements that are arranged offset from each other in this third spatial direction can be described as "offset from each other".

[0027] Accordingly, the term "lateral interference with the conveyor track," as used here, is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to a specific or adapted meaning. Without limitation, the term can refer in particular to a mechanical interference occurring in the lateral direction, i.e., an interference that has at least one movement component and / or at least one force component in the spatial direction defined above, i.e., a spatial direction perpendicular to the weight of the material being cleaned and perpendicular to the conveying direction. Thus, in its closed state, the braking element can obstruct a lateral area of ​​the conveyor track in such a way that the conveying of the material being cleaned is blocked or at least inhibited.Lateral intervention can refer to the braking element occupying a space horizontally offset from a main axis and / or a reference plane defined by the conveyor track and / or the conveyor element. To occupy a lateral area of ​​the conveyor track, the braking element can project laterally into the conveyor track, at least with a portion of its length, specifically from an area located laterally adjacent to the track, particularly in such a way that it can come into contact with the material being cleaned. In particular, the braking element can also rest, at least with a further portion, laterally adjacent to the conveyor track on the transport device, specifically on a conveyor table of the transport device.Lateral engagement can also occur during the engagement movement of the brake element from the open to the closed state, such that the portion of the brake element that projects laterally into the conveyor track in the closed state initially does not project laterally into the conveyor track in the open state, but is moved into the conveyor track during the engagement movement. The engagement movement can be at least partially or completely in a plane parallel to, and specifically and additionally above, the conveyor track and / or the conveyor element. The lateral engagement can be distinguished from an engagement from above and / or below into the conveyor track.

[0028] The transport device also includes at least one emergency control unit designed to bring the brake element into the closed position in an emergency. The term "emergency control unit," as used here, is a broad term and should be understood in its usual and common sense, as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a single-part or multi-part device of the cleaning device, specifically the transport device, which is designed to fully or partially control and / or regulate the operation of the transport device.In particular, the emergency control system can be configured to change one or more operating parameters of the brake element, especially to control and / or regulate them. For example, the emergency control system can change a position and / or state of the brake element, particularly indirectly, for example by means of a control signal that the emergency control system transmits to an actuator control unit. In particular, the emergency control system can be designed to bring the brake element into an open state, i.e., into an open position, and / or into a closed state, i.e., into a closed position, especially depending on an external fire protection system.

[0029] The transport device may, in particular, comprise at least one data processing device, for example, at least one processor. The term "processor," as used here, is also a broad term, to which its ordinary and common meaning, as understood by those skilled in the art, shall be attributed. The term is not limited to any special or adapted meaning. Without limitation, the term may, in particular, refer to any logic circuit configured to perform basic operations of a computer or system, and / or to a device configured to perform calculations or logical operations. In particular, the processor may be configured to implement basic instructions that control a computer or computer system.For example, the processor may comprise at least one component selected from the group consisting of: an arithmetic logic unit (ALU); a floating-point unit (FPU), such as a mathematical coprocessor or a numeric coprocessor; a plurality of registers, in particular registers configured to supply operands to the ALU and to store the results of operations; and a memory, in particular a data memory, such as an L1 and / or L2 cache. In particular, the processor may comprise a single core or multiple cores. In particular, the processor may be a central processing unit (CPU) or comprise such a central processing unit.Additionally or alternatively, the processor may be a microprocessor or comprise a microprocessor, such that, in particular, the components of the processor may be contained in a single integrated circuit chip. Alternatively or additionally, however, the processor may also comprise one or more application-specific integrated circuits (ASICs) and / or one or more field-programmable gate arrays (FPGAs) or similar components. The processor may, in particular, be configured, especially by software programming, to perform one or more evaluation operations.

[0030] Accordingly, the emergency control system can be implemented partly by hardware and / or, alternatively or additionally, entirely or partially by software. Furthermore, the emergency control system can include at least one volatile and / or non-volatile data storage device. It can also include at least one interface, such as a human-machine interface for inputting commands and / or outputting information, and / or a wireless or wired interface for the unidirectional or bidirectional exchange of data and / or commands between the cleaning system and at least one other device. In particular, the emergency control system can include at least one computer and / or at least one processor.

[0031] The emergency control system can be designed to be connected to an external fire protection system. The term "fire protection system," as used here, is a broad term and should be understood in its usual and common sense, as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer, in particular, to at least one device that detects, prevents, or contains a fire. The fire protection system can be designed to distinguish at least two different states. In a first state, under normal circumstances, the fire protection system cannot send an emergency signal and / or a free-running signal to the transport device, specifically the emergency control system, so that the emergency control system moves and / or holds the braking element in an open state.Under normal circumstances, a fire cannot be assumed. However, in a secondary scenario, an emergency, the fire protection system can send an emergency signal and / or a non-free-running signal to the transport device, specifically the emergency control unit, causing the emergency control unit to engage and / or hold the braking element in a closed position. In an emergency, a fire can be assumed. The fire protection system can include smoke detectors or emergency call buttons to detect a fire. Other measures are also possible. The fire protection system can be external, meaning it is integrated into the building structure and not part of the transport device. To be connectable to an external fire protection system, the emergency control unit can have an interface. The emergency control unit can receive a control signal from the fire protection system.Additionally or alternatively, the emergency control system can be at least partially and / or completely integrated into the fire protection system.

[0032] The transport device may include an emergency power supply unit, wherein the emergency power supply unit is configured to supply energy to a drive of the conveying element in an emergency, in particular so that, when the brake element is closed, a section of the conveying track downstream of the brake element remains free of material to be cleaned. The term "emergency power supply unit" as used here is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, shall be attributed. The term is not limited to any specific or adapted meaning. The term can, without limitation, refer in particular to any device designed to provide a continuous power supply, especially even in the event of an interruption of an external power supply.The emergency power supply unit can be an emergency power supply unit specifically designed to provide emergency power. The emergency power supply unit can include an energy storage device and / or an energy generator to provide the emergency power. Under normal circumstances, the emergency power supply unit cannot provide or supply power to the transport device. The energy storage device can be charged under normal circumstances. In an emergency, the emergency power supply unit can provide and / or supply power to the transport device.

[0033] The brake element can include - at least one actuator designed to move the brake element from the closed state to an open state during operation, whereby the brake element does not block the conveyance of the material to be cleaned in the open state, and - at least a passive return element designed to move the brake element from the open state to the closed state.

[0034] The term "actuator" as used here is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, shall be attributed. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a mechanical and / or electromechanical actuator that performs an actuating movement. The actuator may be selected from the group consisting of: an electric actuator; a pneumatic actuator; a hydraulic actuator. The actuator may, in particular, generate a rotary actuating movement. Alternatively or additionally, the actuator may generate a translational actuating movement. The actuating movement may be for transitioning from a first position, in particular associated with an open state of the brake element, to a second position, in particular associated with a closed state of the brake element.Alternatively or additionally, the positioning movement can take place in the opposite direction.

[0035] The term "reset element" as used here is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a device selected for transferring a mechanism into a reference position. The reset element can be a passive reset element, i.e., a reset element that transfers the mechanism into the reference state without any actuation. According to the invention, the reference position can correspond to the closed state of the brake element.The return element can exert a preload on the brake element, which drives the brake element from the open state to the closed state, in particular to effect the engagement movement, wherein the actuator is designed such that it overcomes the preload during operation and holds the brake element in the open state. The return element can be selected from the group consisting of: a spring element, specifically a metallic spring, a gas spring, an elastomer spring; a system with counterweights. At least two return elements can be provided, each configured to move the brake element from the open state to the closed state.

[0036] The actuator can be a free-running actuator, in particular a non-self-locking electric motor. The term "free-running actuator" as used here is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a motor that generates no resistance, in particular no torque, when moved externally, especially without being actively operated itself. The free-running motor can refer to a motor that can be moved from the first position, in particular associated with the open state of the brake element, to the second position, in particular associated with the closed state of the brake element, without generating resistance to the actuating movement and / or blocking the actuating movement.A free-running actuator can be an electric motor. The term "self-locking electric motor," as used here, is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to a specific or adapted meaning. Without limitation, the term can refer, in particular, to a motor that opposes an external movement, especially by slowing and / or blocking the external movement. Therefore, a self-locking electric motor cannot be a free-running motor. A "non-self-locking electric motor" can be a free-running motor.

[0037] The actuator can be arranged below the conveyor track and / or the conveying element in a conveyor table. The conveyor table can have and / or form a housing, specifically a cover and / or a belt body, in which the actuator is provided. The conveyor table can have a load-bearing function. In particular, the conveying element can be mounted on the conveyor table.

[0038] The return element can be integrated into the actuator. The actuator can exert a force on the brake element via a shaft of the brake element. The actuator can be designed such that, in the event of an interruption of the power supply to the actuator, it does not overcome the preload or force of the return element, in particular so that the return element brings the brake element into the closed position.

[0039] The transport device may further include an actuator control unit, wherein the actuator is operated by means of the actuator control unit, the actuator control unit normally operating the actuator such that the brake element is in the open state, and in particular, in an emergency, operating the actuator such that the brake element is in the closed state. The actuator control unit may have an interface to the emergency control unit and / or be at least partially or completely integrated into the emergency control unit. The term "actuator control unit" as used here is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, shall be attributed. The term is not limited to any specific or adapted meaning.The term can refer, without limitation, in particular to a one-piece or multi-piece device of the cleaning device, specifically the transport device, which is configured to fully or partially control and / or regulate the operation of the transport device. In particular, the actuator control can be configured to change one or more operating parameters of the brake element, in particular to control and / or regulate them; for example, the actuator control can change a position and / or state of the brake element, in particular directly. In particular, the actuator control can be designed to bring the brake element into an open state, i.e., into an open position, and / or into a closed state, i.e., into a closed position.

[0040] As previously stated, the transport device can, in particular, include at least one data processing device, for example, at least one processor. Accordingly, the actuator control system can be implemented partly by hardware or, alternatively or additionally, completely or partially by software. Furthermore, the actuator control system can include at least one volatile and / or non-volatile data storage device. It can also include at least one interface, for example, a human-machine interface for inputting commands and / or outputting information, and / or a wireless or wired interface for the unidirectional or bidirectional exchange of data and / or commands between the cleaning system and at least one other device. The actuator control system can, in particular, include at least one computer and / or at least one processor.

[0041] To operate the actuator so that the brake element is closed in an emergency, the power supply to the actuator can be interrupted, or the actuator can actively close the brake element. In particular, this means that the force the actuator applies during active operation to counteract the passive return mechanism of the brake element may no longer be sufficient to keep the brake element open. In this case, the brake element is closed by the passive return mechanism.

[0042] The transport device can be designed such that material being cleaned, which during an engagement movement of the brake element from the open to the closed state is located partly downstream and partly upstream of the brake element in a conveying direction, is conveyed completely downstream of the brake element. For example, material being cleaned that extends from an area downstream of the brake element into an area upstream of the brake element can be conveyed out of that area. In particular, an area that is directly downstream or behind the brake element in a conveying direction can be conveyed free of material being cleaned.The transport device can be designed in such a way that further items to be cleaned, which follow the items to be cleaned that are partially downstream and partially upstream of the brake element during the engagement movement of the brake element from the open state to the closed state, are blocked.

[0043] The conveying track can be arranged above the conveying element, and the braking element can be configured to act on items to be cleaned above the conveying element when closed, in particular on at least one tray conveyed by the conveying element. For example, the braking element can be positioned above the conveying element at a height between 1 mm and 70 mm, in particular between 2 mm and 50 mm.

[0044] The braking element can be designed such that, in the closed state, it blocks the item being cleaned by pressing against it, in particular against an end face of the item, i.e., a tablet. The braking element can have at least one wing, wherein at least part of the wing is pivotable about an axis of rotation in and out of the conveyor track, in particular so that at least this part of the wing can be brought into contact with the item being cleaned, specifically against an end face of the item, in particular the tablet. The term "end face" as used here is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to a specific or adapted meaning.The term can, without limitation, refer in particular to the side of the item being cleaned that is furthest upstream in the conveying direction and that is, for example, located within the engagement area of ​​the braking element and can therefore be brought into contact with the braking element. The end face can be perpendicular to the conveying direction. The impeller can be configured to pivot into the conveying track above the conveying element, in particular above the conveying element, and especially at the level of at least one tray transported by the conveying element.

[0045] The wing can have at least one angle such that, particularly in the closed state, the wing is angled along its longitudinal axis, specifically from the axis of rotation of the brake element encompassing the wing, towards the conveyor track. The angle can form an angle, the angle being between 90° and 170°, preferably 135°. The term "angle" as used here is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to any specific or adapted meaning. The term can, without limitation, refer to a deviation along the longitudinal axis of the wing from a straight path. The angle can be a bend. The angle can be over any radius. An angle can form an angle, particularly to describe the deviation from a straight path.The angled design allows the wing to engage the conveyor track at a steeper angle, particularly at its front edge, compared to a non-angled wing. This facilitates engagement between two items on the conveyor track that are not in violation of the cleaning instructions, especially those positioned directly adjacent to one another. If the items are trays, they typically have a corner radius. When at least one wing pivots, particularly during an emergency, the angled design makes it easier for the wing to pivot into the gap created by the corner radii between the trays. In contrast, straight wings may, when pivoting, become stuck against the preceding tray, significantly hindering engagement.

[0046] The impeller can have at least one roller on its end face, wherein the roller is rotatable about an axis of rotation, the axis of rotation being orthogonal to the conveying direction and / or a plane formed by or corresponding to the conveying track. The roller can have a diameter between 3 mm and 12 mm, preferably 5 mm. The roller can extend over at least 50%, 70%, or 90% of the height of the impeller. The term "roller" as used here is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to any specific or adapted meaning. The term can, without limitation, refer to a mechanical device that is rotatable about an axis of rotation. The roller can have a cylindrical shape.The roller can be arranged on the impeller in such a way that it represents the first and / or only point of contact when the impeller pivots from the open to the closed position, thus engaging laterally in the conveyor track. This can be the case, in particular, when an item to be cleaned, especially a tray, is located partially upstream and partially downstream of the brake. In this case, the impeller may initially bear against the side of the item to be cleaned, specifically the tray, until it has been conveyed out of the engagement area, allowing the brake element, specifically the impeller, to be fully closed. While the item to be cleaned is being conveyed out of the engagement area, the impeller's roller may bear against the item, specifically the tray. Particularly in the case of a tray, the roller may bear against one of the tray's side edges.The item being cleaned, especially the tray, can roll along the roller as it is conveyed out of the entry area, allowing it to be transported away unimpeded. In contrast, with a wing without rollers, a jam can occur between the side edge of the tray and the outer edge of the wing. This would prevent the airlock area from moving freely.

[0047] At least two braking elements can be provided, engaging the conveyor track from opposite sides. The two braking elements can be designed such that they are simultaneously moved from the open to the closed position within the conveyor track by means of a single engagement movement.

[0048] The cleaning system may further include at least one dishwasher, in particular a dishwashing machine, for cleaning the items to be cleaned, wherein the transport device is set up to feed the items to be cleaned to the dishwasher.

[0049] The term "dishwasher," also generally referred to as "cleaning device" as used here, is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a device designed to remove adhering macroscopic or microscopic contaminants from items being cleaned, or at least to partially remove such contaminants, especially in a cleaning chamber. An additional disinfection effect can optionally be achieved.

[0050] The term "dishwasher," as used here, is a broad term and should be understood in its usual and common sense, as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a cleaning device designed to remove at least a large extent of adhering contaminants from dishes and / or to sanitize and / or disinfect the dishes, especially by contact with at least one cleaning fluid. The dishes can include, in particular, items designed and intended for serving, preparing, or storing food and / or beverages, for example, items selected from the group consisting of: plates, cups, bowls, dishes, glasses, pans, pots, trays, cutlery, and catering containers.

[0051] The dishwasher can be selected from the group consisting of: a program dishwasher, a hood-type dishwasher, a pass-through dishwasher, a conveyor dishwasher.

[0052] The term "programmable dishwasher" or "programmable automatic dishwasher," as used here, is a broad term to which its usual and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to a specific or adapted meaning. Without limitation, the term can refer in particular to a cleaning device in which the items to be cleaned are stored stationary in a cleaning chamber and can be subjected there to at least one cleaning program that has a defined or definable start and end, and during which the cleaning fluid is applied. For example, the cleaning program may have a predetermined or definable duration.The term "cleaning program" can thus refer to a process in which items to be cleaned are exposed to at least one cleaning fluid, and the cleaning program has a defined or definable start and end, and / or a defined or definable duration. For example, the cleaning program can comprise several sequential cleaning steps, each involving exposure to cleaning fluid, which differ in at least one parameter. For example, the cleaning program can have several sequential cleaning steps with different cleaning fluids.The cleaning program can, for example, include at least one washing step in which the items to be cleaned are exposed to at least one washing fluid or liquid, and at least one rinsing step, particularly one following the washing step, in which the items to be cleaned are exposed to at least one rinsing fluid or liquid. The washing step can, for example, be carried out in a recirculating system using at least one pump, whereas the rinsing step can be carried out simply by applying the rinsing liquid without recirculation. The cleaning program can optionally include one or more further steps, such as at least one drying step following the rinsing step.The dishwasher can, for example, have at least one control unit, such as the machine control unit described in more detail below, which is configured to control the execution of the cleaning program. The automatic program function can, for example, be configured to allow a user to select from several possible cleaning programs with different parameters and / or to adjust operating parameters of at least one cleaning program.

[0053] The term "hooded dishwasher," as used here, is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a dishwasher as defined above, which has at least one hood. The hood can, in particular, be designed as part of the dishwasher's housing, comprising at least two side walls of the housing and being movable in a vertical motion. For example, the vertical motion can be configured such that it includes a lower position, which may correspond to the closed state, in which the hood seals against other parts of the housing and / or the cleaning system.Furthermore, the vertical movement can be designed such that it includes an upper position corresponding to the open state, in which a gap or opening is created between the hood and the other housing parts, thus providing access to a cleaning chamber. For example, the housing of the cleaning device can be cuboid in shape, with two side walls, a back wall, a front wall, a top, and optionally a bottom. The hood can, for example, form at least the two side walls and the front wall, and optionally also the back wall and / or the top. The hood can, for example, rest on a base and / or a frame of the cleaning device. During the vertical movement from the closed to the open state, the back wall can optionally remain stationary, so that the hood moves relative to the back wall.Optionally, the roof can remain stationary, so that only a hood-like casing partially enclosing the cleaning chamber on both side walls and the front is moved vertically. Various configurations are possible.

[0054] The term "pass-through dishwasher," as used here, is a broad term and should be interpreted according to its usual and common meaning, as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a dishwasher as defined above, which has a pass-through mechanism. The pass-through mechanism can be designed such that soiled items in containers, specifically cleaning baskets, can be fed into a cleaning chamber of the pass-through dishwasher via a carrier. The pass-through dishwasher can have a basket feed system, which is designed in particular such that one or more cleaning baskets can be actively or passively fed into the cleaning chamber.The pass-through dishwasher may have a basket discharge, which is designed in such a way that one or more cleaning baskets can be actively or passively conveyed away from or out of the cleaning chamber.

[0055] The term "conveyor dishwasher," as used here, is a broad term and should be interpreted according to its usual and common meaning, as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Without limitation, the term can refer in particular to a dishwasher as defined above, which has at least one transport device. Specifically, the conveyor dishwasher can have at least one cleaning chamber, but also, in principle, multiple cleaning chambers, for example, at least one cleaning tunnel, in which the items to be cleaned and / or one or more dishes are exposed to at least one cleaning fluid, in particular by means of at least one application device. The transport device can be configured to transport the items through the cleaning chamber.

[0056] The dishwasher can be positioned downstream of the braking element, relative to the conveying direction of the conveying element. The conveying element can be selected from the following group: a roller conveyor; a belt conveyor; a plate conveyor; a belt conveyor; a chain conveyor.

[0057] In another aspect of the present invention, a fire protection system is proposed. The fire protection system comprises, - a cleaning system according to one of the preceding claims; - A fire-resistant slide gate for closing a lock, wherein the cleaning system is configured to transport the items to be cleaned through the lock by means of the conveying element, and wherein the fire-resistant slide gate is provided downstream of the braking element with respect to the conveying direction of the items to be cleaned by means of the conveying element. The term "fire-resistant slide gate," as used here, is a broad term to which its ordinary and common meaning, as understood by those skilled in the art, should be attributed. The term is not limited to any specific or adapted meaning. The term can, without limitation, refer in particular to a fire-resistant closing element for an opening in a structural component. The fire-resistant slide gate can be provided with respect to the conveying track and / or the conveying direction between the dishwasher and the braking element.The airlock can be designed as an opening in a wall, particularly a building wall, specifically a fire-resistant wall. The airlock can be located, for example, between a first room in the building, i.e., the dining hall, and a second room in the building, i.e., the dishwashing area. The conveying element can be routed through the airlock, in particular as a continuous conveying element, so that a jointly driven section of the conveying element is, for example, located partially upstream and partially downstream of the airlock. The fire-resistant valve can be designed to keep the airlock open under normal circumstances, allowing items to be transported through the airlock by means of the conveying element. The fire-resistant valve can also be designed to close the airlock in a fireproof manner in an emergency, particularly to prevent the spread of fire from one room to another.

[0058] An emergency control system can be designed to close the fire protection valve with a time delay after the braking element in an emergency, specifically to close the fire protection valve after the braking element. This makes it possible to transport the area of ​​the airlock free of material being cleaned, ensuring that the fire protection valve closes the airlock in a fire-safe manner. Since the braking element closes first, no further material being cleaned can be conveyed downstream of the braking element. The emergency power supply ensures that the conveying element removes the material being cleaned, which is already downstream of the braking element, from the airlock area. The delayed closure of the fire protection valve ensures that this process is completed before the fire protection valve closes.

[0059] The proposed cleaning system and fire protection system offer numerous advantages over known cleaning systems and fire protection systems.

[0060] In particular, the cleaning system can provide safe and / or reliable compartmentation between different rooms in a building, especially a dishwashing area and a dining hall, in the event of an emergency such as a fire. Furthermore, it can provide an efficient and / or cost-effective fire protection system, which includes safe and reliable emergency control. Finally, the cleaning system and / or the fire protection system can be easily and effectively cleaned.

[0061] The braking element according to the invention can be used for different tray widths and tray designs. Compared to known retention devices, the braking element according to the invention has the further advantage of an automatic closing function, which can also take effect in the event of a power failure. Thus, its function is maintained even during a power outage.

[0062] The device according to the invention can have a wing-like brake element on each side of the transport device. These two brake elements can, for example, be simultaneously moved into an open position by means of an actuator motor against a preload of a return element. In case of an alarm, the actuator motor can actively return to its rest position and / or the actuator motor can be de-energized. The motor can be designed to be non-self-locking, particularly by means of a gearbox that can be associated with the actuator motor. In principle, the brake element can therefore be moved into a locked position, i.e., the closed state, by a return force, particularly from the return element. The return element can be integrated into the actuator motor. It is also possible for the return element to be designed as a separate component.A double version with at least two reset elements may also be possible for reasons of redundancy.

[0063] The shaft that actuates the braking element, and thus the retaining vanes, can be guided from below through the conveyor level. These rotary unions can be easily and reliably sealed if required. The rest of the braking element's mechanism can be located entirely below the conveyor level. Therefore, it does not require any additional installation space beyond that already needed by the transport device. The overall length of the transport device can also be minimal.

[0064] An item to be cleaned, particularly a tray, that is located within the area of ​​the braking element during a closing movement (i.e., an engagement movement) can continue to be transported, especially because the braking element, particularly the one designed as a wing, cannot engage the side of a tray. After an alarm is triggered, the conveyor system can continue to run for a certain period of time thanks to an emergency power supply. This allows the critical area within the fire protection gate or airlock to be cleared of items to be cleaned, i.e., trays. The lateral engagement ensures that a tray located within the retaining device during the closing process, particularly partially upstream and downstream, is properly transported away. Tipping and / or shifting of items to be cleaned, and especially the falling of dishes from the tray, does not occur.If the transport path is clear, the braking elements can be fully retracted into the path, i.e., swung into place. A following tray can then be stopped by having its front edge directly collide with the two retaining elements. The conveyor can slide underneath the stopped tray as long as the emergency power supply is still active.

[0065] The following items being cleaned, especially trays, are held in their normal conveying position, preventing subsequent trays from being pushed on top of each other. This prevents the tray from being deflected from the horizontal, which has the advantage that the holding device can be installed to within 100 mm of the fire protection system's airlock.

[0066] The alarm can be triggered by a signal exchange between an external fire protection system and the conveyor system. As soon as a signal is received, the actuator can be de-energized, and the restraint function can be activated. In the event of a power failure to the actuator, the mechanism can still function independently due to the preload of the return element. Resetting and / or releasing the conveyor path then occurs again with the regular power supply, for example, after a false alarm has been acknowledged.

[0067] Therefore, it can be stated that different tray widths and / or tray designs, e.g., trapezoidal trays, can be accommodated by the side wings of the braking element. The cleaning system also has the advantage that a tray located within the area of ​​the holding device at the time of triggering, i.e., during the closing process of the braking element, can continue to move forward, and the holding device only engages before the following tray and blocks the subsequent items being cleaned. The tray located within the holding device during the closing process can continue downstream in the desired position, and tipping and / or shifting of the transported item, as well as, for example, it falling off the system, is not possible.

[0068] The following tray can then be held in its normal conveying position, preventing the trays from overlapping. This prevents the tray from being deflected from the horizontal. This has the advantage that the holding device can be installed close to the fire damper, in particular as close as 100 mm from it. As soon as the actuator is not actively operating, especially when de-energized, the passive holding element can be activated. Therefore, if the actuator's power supply fails, the mechanism also closes automatically via the integrated return element.

[0069] In summary, without limiting further possible embodiments, the following embodiments are proposed: Embodiment 1: Cleaning system comprising a transport device for conveying items to be cleaned, wherein the transport device comprises: - at least one driven conveying element for transporting the cleaning material along a conveying track, - at least one braking element to stop the transport of the item being cleaned when the braking element is closed, - at least one emergency control designed to bring the brake element into the closed state in an emergency, wherein the brake element is designed to block the conveying of the material being cleaned by a lateral engagement in the conveying track when in the closed state.

[0070] Embodiment 2: Cleaning system according to the preceding embodiment, wherein the emergency control is designed in such a way that it can be connected to an external fire protection system.

[0071] Embodiment 3: Cleaning system according to one of the preceding embodiments, wherein the transport device includes an emergency power supply unit, wherein the emergency power supply unit is configured to supply energy to a drive of the conveying element in an emergency, in particular so that when the brake element is in a closed state, an area of ​​the conveying track downstream of the brake element can be conveyed free of material to be cleaned.

[0072] Embodiment 4: Cleaning system according to one of the preceding embodiments, wherein the transport device is arranged in such a way that the conveying element can be driven independently of the braking element, in particular also in the closed state of the braking element.

[0073] Embodiment 5: Cleaning system according to one of the preceding embodiments, wherein the brake element comprises - at least one actuator designed to move the brake element from the closed state to an open state during operation, whereby the brake element does not block the conveyance of the material to be cleaned in the open state, and - at least a passive return element designed to move the brake element from the open state to the closed state.

[0074] Embodiment 6: Cleaning system according to the preceding embodiment, wherein the return element exerts a preload on the brake element which drives the brake element from the open state to the closed state, wherein the actuator motor is designed such that it overcomes the preload during operation and keeps the brake element in the open state.

[0075] Embodiment 7: Cleaning system according to one of the two preceding embodiments, wherein the actuator is a free-running actuator, in particular a non-self-locking electric motor.

[0076] Embodiment 8: Cleaning system according to one of the three preceding embodiments, wherein the actuator is arranged below the conveyor track in a conveyor table.

[0077] Embodiment 9: Cleaning system according to one of the four preceding embodiments, wherein the return element is selected from the group consisting of: a spring element; a system with counterweights.

[0078] Embodiment 10: Cleaning system according to one of the five preceding embodiments, wherein at least two return elements are provided, each of which is designed to bring the brake element from the open state to the closed state.

[0079] Embodiment 11: Cleaning system according to one of the six preceding embodiments, wherein the reset element is integrated into the actuator.

[0080] Embodiment 12: Cleaning system according to one of the seven preceding embodiments, wherein the actuator exerts a force on the brake element via a shaft of the brake element.

[0081] Embodiment 13: Cleaning system according to one of the eight preceding embodiments, wherein the actuator is designed such that, in the event of an interrupted energy supply to the actuator, it does not overcome the preload of the return element, in particular so that the return element brings the brake element into the closed state.

[0082] Embodiment 14: Cleaning system according to one of the nine preceding embodiments, wherein the transport device further comprises an actuator control, wherein the actuator is operated by means of the actuator control, wherein the actuator control normally operates the actuator in such a way that the brake element is in the open state, and in particular in an emergency operates the actuator in such a way that the brake element is in the closed state.

[0083] Embodiment 15: Cleaning system according to the preceding embodiment, wherein in an emergency the energy supply to the actuator is interrupted or the actuator actively brings the brake element into the closed state.

[0084] Embodiment 16: Cleaning system according to one of the preceding embodiments, wherein the transport device is designed such that material to be cleaned, which during an engagement movement of the brake element from the open state to the closed state, is partly in a conveying direction downstream and partly upstream of the brake element, is conveyed completely downstream of the brake element.

[0085] Embodiment 17: Cleaning system according to one of the preceding embodiments, wherein the conveying track is arranged above the conveying element and the braking element is configured to act on material to be cleaned above the conveying element in the closed state, in particular on at least one tray conveyed by the conveying element.

[0086] Embodiment 18: Cleaning system according to one of the preceding embodiments, wherein the braking element is designed such that, in the closed state, it blocks the item being cleaned by contacting the item being cleaned, in particular by contacting an end face of the item being cleaned.

[0087] Embodiment 19: Cleaning system according to one of the preceding embodiments, wherein the braking element has at least one wing, wherein at least a part of the wing is pivotable about an axis of rotation in and out of the conveyor track, in particular such that at least this part of the wing can be brought into contact with the material being cleaned.

[0088] Embodiment 20: Cleaning system according to the preceding embodiment, wherein the wing has at least one angle such that the wing is angled along its longitudinal axis towards the conveyor track.

[0089] Embodiment 21: Cleaning system according to the preceding embodiment, wherein the angling forms an angle, the angle being between 90° and 170°, preferably 135°.

[0090] Embodiment 22: Cleaning system according to one of the three preceding embodiments, wherein the wing has at least one roller on its end face, wherein the roller is rotatable about an axis of rotation, wherein the axis of rotation is orthogonal to the conveying direction and / or a plane formed by or corresponding to the conveying track.

[0091] Embodiment 23: Cleaning system according to the previous embodiment, wherein the roller has a diameter between 3 mm and 12 mm, preferably 5 mm.

[0092] Embodiment 24: Cleaning system according to one of the preceding embodiments, wherein at least two braking elements are provided which engage the conveyor track from opposite sides.

[0093] Embodiment 25: Cleaning system according to one of the preceding embodiments, wherein the cleaning system further comprises at least one dishwasher, in particular a dishwashing machine, for cleaning the items to be cleaned, wherein the transport device is set up to feed the items to be cleaned to the dishwasher.

[0094] Embodiment 26: Cleaning system according to the preceding embodiment, wherein the dishwasher is selected from the group consisting of: a program dishwasher, a hood dishwasher, a pass-through dishwasher, a conveyor dishwasher.

[0095] Embodiment 27: Cleaning system according to one of the two preceding embodiments, wherein the dishwasher is provided downstream of the brake element with respect to a conveying direction of the conveying element.

[0096] Embodiment 28: Cleaning system according to one of the preceding embodiments, wherein the conveying element is selected from the group consisting of: a roller conveyor; a conveyor belt; a plate conveyor; a belt conveyor; a conveyor chain.

[0097] Design 29: Fire protection system comprising, - a cleaning system according to one of the preceding embodiments; - a fire protection valve for closing a lock, wherein the cleaning system is set up to transport the material to be cleaned through the lock by means of the conveying element, wherein the fire protection valve is provided downstream of the braking element with respect to a conveying direction of the material to be cleaned by means of the conveying element.

[0098] Embodiment 30: Fire protection system according to the preceding embodiment, wherein an emergency control is designed to close the fire protection valve in an emergency with a time delay to the braking element, in particular to close the fire protection valve in an emergency after the braking element.

[0099] Embodiment 31: Fire protection system according to one of the two preceding embodiments, wherein the fire protection slide is provided between the dishwasher and the braking element with respect to the conveying track and / or the conveying direction. Brief description of the characters

[0100] Further details and features will become apparent from the following description of exemplary embodiments, particularly in conjunction with the dependent claims. The respective features can be implemented individually or in combination with one another. The invention is not limited to the exemplary embodiments. The exemplary embodiments are shown schematically in the figures. Identical reference numerals in the individual figures denote identical or functionally equivalent elements, or elements that correspond to one another with respect to their functions.

[0101] Specifically, we show: Fig. 1. A perspective view of a cleaning system and a fire protection system with an open brake element; Fig. 2 a perspective view of the cleaning system and the fire protection system with the brake element closed; Fig. 3 a top view of the cleaning system and the fire protection system with open brake element; Fig. 4. A top view of the cleaning system and the fire protection system with the brake element closed; and Fig. 5a-5c a detailed illustration of the brake element. Description of the exemplary implementations

[0102] Fig. Figure 1 shows an exemplary embodiment of a cleaning system 110 and a fire protection system 122. The fire protection system 122 comprises a fire-resistant damper 124 for closing an airlock 126. The airlock 126 can be provided in a fire-resistant wall 162. The fire-resistant wall 162 can separate a dining room 164 from a dishwashing area 166.

[0103] The fire protection system 122 also includes a cleaning system 110. The cleaning system 110 includes a transport device 112 for conveying cleaning material 114. According to Fig. 1. The item to be cleaned 114 is a tray, on which further items to be cleaned 114 are arranged, namely plates, glasses and / or cutlery. In principle, however, other items to be cleaned 114 are also possible.

[0104] The transport device 112 includes: - at least one driven conveying element 116 for conveying the cleaning material 114 along a conveying track 176, - at least one braking element 118 for stopping the transport of the cleaning material 114 in a closed state of the braking element 118, - at least one emergency control 120, which is configured to bring the brake element 118 into the closed position in an emergency, wherein the brake element 118 is designed to block the conveyance of the cleaning material 114 in the closed position by means of a lateral wing 132 projecting into the conveying track 176. A first section 170 of the transport device 112 may be provided in the dining room 164. The tray loading unit 168 may be located there. A second section 174 of the transport device 112 may be provided in the dishwashing area. The tray unloading unit 172 may be located there.

[0105] The cleaning system 110 is set up to transport the cleaning material 114 through the lock 126 by means of the conveying element 116; in particular, for this purpose, the conveying element 116 is continuous and / or uninterrupted in the area of ​​the lock 126.

[0106] The conveying element 116 can be provided on a conveying table 140 of the transport device 112. The conveying table 140 can have a covering, i.e., a belt body 142. In addition, the conveying table 140 can have a guide 144 for the cleaning material 114, in particular a guide 144 that defines the conveying track 176.

[0107] The fire protection gate 124 can be positioned downstream of the brake element 118 with respect to a conveying direction 128 of the material to be cleaned 114 by means of the conveying element 116. The emergency control 120 of the transport device 112 can be designed such that it can be connected to the external fire protection system 122. For this purpose, the emergency control 120 can have an interface that receives a control signal from the fire protection system 122. Alternatively, the emergency control 120 can also be partially or completely integrated into the fire protection system 122.

[0108] The emergency control 120 can be configured to close the fire protection valve 124 in an emergency with a time delay compared to the braking element 118, in particular to close the fire protection valve 124 after the braking element 118 in an emergency. In this way, it may be possible to first convey the area of ​​the airlock 126 free of material to be cleaned 114 before the fire protection valve 124 closes.

[0109] The cleaning system 110 may further comprise at least one dishwasher 180, in particular a dishwashing machine, for cleaning the items 114, wherein the transport device 112 is configured to feed the items 114 to the dishwasher 180. The dishwasher 180 may be selected from the group consisting of: a program dishwasher, a hood-type dishwasher, a pass-through dishwasher, or a conveyor dishwasher.

[0110] The fire protection slide 124 can be provided in relation to the conveyor track 176 between the dishwasher 180 and the brake element 118; the dishwasher 180 is in Fig. 1 not shown. The dishwasher 180 can be provided downstream of the brake element 118 with respect to a conveying direction 128 of the conveying element 116.

[0111] The transport device 112 can include an emergency power supply unit 130, wherein the emergency power supply unit 130 is configured to supply energy to a drive of the conveying element 116 in an emergency, in particular so that, when the brake element 118 is closed, a section of the conveying track 176, especially the section of the conveying track 176 associated with the fire protection slide 124, can be conveyed downstream of the brake element 118 free of cleaning material 114. The transport device 112 can be designed such that cleaning material 114, which during an engagement movement of the brake element 118 from the open state to the closed state is located partly downstream and partly upstream of the brake element 118 in a conveying direction 128, is conveyed completely downstream of the brake element 118.The transport device 112 can be arranged in such a way that the conveying element 116 can be driven independently of the braking element 118, in particular also in the closed state of the braking element 118.

[0112] In Fig. Figure 1 shows the brake element 118 in the open position. The item to be cleaned 114, in particular a tray, is located in the conveying direction 128, partly upstream and partly downstream of the brake element 118. Fig. Figure 2 shows the exemplary embodiment of the cleaning system 110 and the fire protection system 122 according to Fig. 1 with the brake element 118 in the closed position. The material to be cleaned 114 is in contact with the brake element 118. Downstream of the brake element 118, there is no material to be cleaned 114 in the conveyor track 176; therefore, the area of ​​the lock 124 in particular is free of material to be cleaned 114.

[0113] The braking element 118 can have at least one vane 132, wherein at least a part of the vane 132 is pivotable about a pivot axis 134 into, and especially during the engagement movement 178, and out of the conveyor track 176, in particular so that at least this part of the vane 132 can be brought into contact with the material to be cleaned 114. The engagement movement 178 can be at least partially or completely in a plane parallel to the conveyor track 176 and / or the conveyor element 116. As can be seen from the Fig. As can be seen from Figure 2, the braking element 118 can be designed such that, in the closed state, it blocks the item to be cleaned 114 by contacting it, in particular by contacting an end face of the item to be cleaned 114, specifically the tray. As shown in the exemplary embodiment of the cleaning system 110 and the fire protection system 122, at least or exactly two braking elements 118 can be provided, which engage in the conveyor track 176 from opposite sides.

[0114] The transport device 112 can further comprise an actuator control unit 156, wherein the actuator 136 is operated by means of the actuator control unit 156, the actuator control unit 156 normally operating the actuator 136 such that the brake element 118 is in the open state, and in particular, and in an emergency, operating the actuator 136 such that the brake element 118 is in the closed state. The actuator control unit 156 can include an interface designed to receive a control signal from the emergency control unit 120. Alternatively, the actuator control unit 156 can be partially or completely integrated into the emergency control unit 120.

[0115] To operate the actuator 136 in such a way that the brake element 118 is in the closed state in an emergency, the energy supply to the actuator 136 can be interrupted or the actuator 136 can actively bring the brake element 118 into the closed state.

[0116] The conveying track 176 can be arranged above the conveying element 116 and the braking element 118 can be configured to act on cleaning material 114 above the conveying element 116 in the closed state, in particular on at least one tray conveyed by the conveying element 116.

[0117] The conveying element 116 can be selected from the group consisting of: a roller conveyor; a conveyor belt; a plate conveyor; a belt conveyor 158; a conveyor chain. According to the Fig. In sections 1 and 2, the conveyor element 116 has two conveyor belts 158 which are guided by a belt guide 160. (see also Fig. 5b or Fig. 5c).

[0118] The Fig. Figure 3 shows a top view of the exemplary embodiment of the cleaning system 110 and the fire protection system 122 according to Fig. 1. The Fig. Figure 4 shows a top view of the exemplary embodiment of the cleaning system 110 and the fire protection system 122 according to Fig. 2.

[0119] In the Fig. Brake element 118 is illustrated in detail in sections 5a to 5c. Brake element 118 can include - at least one actuator 136 which is configured to move the brake element 118 from the closed state to an open state during operation, wherein the brake element 118 does not block the conveyance of the cleaning material 114 in the open state, and - at least a passive return element 138, which is designed to bring the brake element 118 from the open state to the closed state.

[0120] The return element 138 can exert a preload on the brake element 118, which drives the brake element 118 from the open state to the closed state, specifically in an engagement movement 178, wherein the actuator 136 is designed such that, during operation, it overcomes the preload and holds the brake element 118 in the open state. The actuator 136 can be designed such that, in the event of an interruption of the power supply to the actuator 136, it does not overcome the preload of the return element 138, in particular so that the return element 138 brings the brake element 118 into the closed state. As in Fig. As shown in Figure 5b, the return element 138 can be integrated into the actuator 136. The return element 138 can be selected from the group consisting of: a spring element; a system with counterweights.

[0121] In particular, to ensure redundancy, at least two return elements 138 can be provided, each designed to move the brake element 118 from the open state to the closed state (not shown).

[0122] The actuator 136 can be a free-running actuator 136, in particular a non-self-locking electric motor. The actuator 136 can be arranged below the conveyor track 176 in a conveyor table 140, in particular under a cover, specifically a belt body 142.

[0123] The actuator 136 can exert a force on the brake element 118 via a shaft 146 of the brake element 118. The shaft 146 can extend from below out of the conveyor table 140, in particular the cladding, i.e., the belt body 142, and engage with the brake element 118. The force transmission between the actuator 136 and the at least one brake element 118 can occur via at least one rotary table 148 and at least one drawbar 150, which engage with the shaft 146. A rotary arm 152 can also be provided between the drawbar 150 and the shaft 146. The actuator 136 can thereby cause the rotary table 148 to rotate. By means of the drawbar 150, the rotary arm 152, and the shaft 146, a pivoting movement of the brake element 118 can be effected. This pivoting movement can take place in opposite directions for opposing brake elements 118.

[0124] The actuator 136 can be designed to operate a plurality of brake elements 118 simultaneously. Alternatively or additionally, the return element 138 can also be designed to operate the plurality of brake elements 118 simultaneously. If a plurality of brake elements 118 are provided, the force flow from the actuator 136 can be transmitted to the respective brake elements 118 via a common rotary table 148 and a plurality of tie rods, with at least one tie rod being associated with each brake element 118.

[0125] The wing 132 of the brake element 118 can preferably be designed in an angled shape, in particular such that the wing has the shape of a flat V in a top view. The wing 132 can have an angle along its longitudinal axis. The angle can be designed such that the lateral engagement of the brake element, in particular of the wing, especially its front face, occurs at a steeper angle to the conveying direction than with a wing that does not have an angle.

[0126] The angle can be designed such that, in the open state, the blade is angled from the axis of rotation 134 of the blade 132 towards the conveyor track 176. In a top view of the blade, the angle can be designed to point inwards towards the conveyor track 176. Fig. 5c describes the bending of an angle 184°. The value of the angle 184° can be between 90° and 170°, preferably 135°.

[0127] Furthermore, the impeller 132 can have at least one roller 182, in particular a vertically mounted roller 182. The axis of rotation of the roller 182 can be arranged vertically and / or extend or lie parallel to a vertical plane. The roller 182 can be attached to an end face of the impeller 132, specifically to the end face of the impeller 132 that can pivot into the conveyor track 176. The roller 182 can be positioned on the end face such that, when the impeller 132 pivots into the conveyor track 176, the roller 182 is the first and / or the only point of contact between the impeller 132 and the material to be cleaned 114, particularly for material to be cleaned 114 that is located partially upstream and downstream of the brake element 118 on the conveyor track 176. The roller 182 can have an axis of rotation which is, for example, orthogonal to the conveying direction 128 and / or a plane formed by the conveying track 176.The axis of rotation of the roller 182 can be arranged such that, when in lateral contact with the material to be cleaned 114, the roller 182 can roll about its axis of rotation, particularly when the material to be cleaned 114 is located partially upstream and downstream of the braking element 118 on the conveyor track 176. The axis of rotation can be arranged such that it does not block the conveyance of the material to be cleaned 114, which is located partially upstream and downstream of the braking element 118. The roller can have a diameter between 3 mm and 12 mm, preferably 5 mm. Reference symbol list 110 cleaning system 112 Transport device 114 items to be cleaned 116 Conveyor element 118 Brake element 120 Emergency control 122 Fire protection system 124 fire protection valves 126 Lock 128 Direction of conveyance 130 Emergency power supply unit 132 wings 134 Axis of rotation 136 Actuator 138 Passive reset element 140 conveyor table 142 ligament bodies 144 Guide 146 wave 148 turntables 150 pull rod 152 Swivel arm 156 Actuator control 158 conveyor belts 160 belt guide 162 Fire protection wall 164 Dining Hall 166 Dishwashing area 168 Tablet task Section 170 of the transport device in the dining hall 172 Tablet withdrawal 174 Section of the transport device in the dishwashing area 176 conveyor track 178 Intervention movement 180 dishwasher 182 rolls 184 angles

Claims

[1] Cleaning system (110) comprising a transport device (112) for conveying items to be cleaned (114), wherein the transport device (112) comprises: - at least one driven conveyor element (116) for conveying the cleaning material (114) along a conveyor track, - at least one braking element (118) for stopping the conveyance of the cleaning material (114) in a closed state of the braking element (118), - at least one emergency control (120) which is designed to bring the braking element (118) into the closed state in an emergency, wherein the braking element (118) is designed to block the conveyance of the cleaning material (114) in the closed state by a lateral engagement in the conveying track. [2] Cleaning system (110) according to the preceding claim, wherein the emergency control (120) is designed such that it can be connected to an external fire protection system (122) [3] Cleaning system (110) according to one of the preceding claims, wherein the transport device (112) comprises an emergency energy supply unit (130), wherein the emergency energy supply unit (130) is configured to supply a drive of the conveyor element (116) with energy in an emergency, so that when the braking element (118) is in a closed state, a region of the conveyor track downstream of the braking element (118) can be conveyed free of items to be cleaned (114). [4] Cleaning system (110) according to one of the preceding claims, wherein the transport device (112) is arranged such that the conveying element (116) can be driven independently of the braking element (118). [5] Cleaning system (110) according to one of the preceding claims, wherein the braking element (118) comprises - at least one servomotor (136) which is designed to bring the braking element (118) from the closed state into an open state during operation, wherein the braking element (118) does not block the conveyance of the cleaning material (114) in the open state, and - at least one passive return element (138) which is designed to bring the braking element (118) from the open state into the closed state. [6] Cleaning system (110) according to the preceding claim, wherein the return element (138) exerts a preload on the braking element (118) which drives the braking element (118) from the open state to the closed state, wherein the servo motor (136) is designed such that it overcomes the preload during operation and holds the braking element (118) in the open state. [7] Cleaning system (110) according to one of the two preceding claims, wherein the servo motor (136) is arranged below the conveyor track in a conveyor table (140). [8] Cleaning system (110) according to one of the three preceding claims, wherein the return element (138) is selected from the group consisting of: a spring element, a system with counterweights. [9] Cleaning system (110) according to one of the four preceding claims, wherein the servomotor (136) is designed such that, in the event of an interrupted power supply to the servomotor (136), it does not overcome the pretension of the return element (138), so that the return element (138) brings the braking element (118) into the closed state. [10] Cleaning system (110) according to one of the five preceding claims, wherein the transport device (112) further comprises a servomotor control (156), wherein the servomotor (136) is operated by means of the servomotor control (156), wherein the servomotor control (156) normally operates the servomotor (136) such that the braking element (118) is in the open state, and in an emergency operates the servomotor (136) such that the braking element (118) is in the closed state. [11] Cleaning system (110) according to one of the preceding claims, wherein the transport device (112) is designed such that cleaning material (114) which is located partly downstream and partly upstream of the braking element (118) in a conveying direction (128) during an engagement movement of the braking element (118) from the open state to the closed state is conveyed completely downstream of the braking element (118). [12] Cleaning system (110) according to one of the preceding claims, wherein the braking element (118) has at least one wing (130), wherein at least a part of the wing (130) is pivotable about a rotation axis (134) into and out of the conveyor track, so that at least this part of the wing (130) can be brought into contact with the material to be cleaned (114). [13] Cleaning system (110) according to one of the preceding claims, wherein the cleaning system (110) further comprises a dishwasher (180) for cleaning the items to be cleaned (114), wherein the transport device (112) is arranged to supply the items to be cleaned (114) to the dishwasher (180). [14] Fire protection system (122) comprising, - a cleaning system (110) according to one of the preceding claims; - a fire protection slide valve (124) for closing a lock (126), wherein the cleaning system (110) is designed to transport the cleaning material (114) through the lock (126) by means of the conveying element (116), wherein the fire protection slide valve (124) is provided downstream of the braking element (118) with respect to a conveying direction of the cleaning material (114) by means of the conveying element (116). [15] Fire protection system (122) according to the preceding claim, wherein an emergency control (120) is designed to close the fire protection slide (124) in an emergency with a time delay to the braking element (118).

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