Device for producing flake ice

Abstract

Device for producing flake ice from a liquid with a cylindrical evaporator roller (1, 21), with a shaft (2) on the evaporator roller (1, 21) transmitting a torque of a drive (3, 23) to the evaporator roller (1, 21), wherein the evaporator roller (1, 21) and the shaft (2) are rotationally symmetric with respect to a common longitudinal axis (10, 30) which is the center of the rotational motion, with two side parts (4, 5, 24, 25) between which the evaporator roller (1, 21) is rotatably arranged, with at least one bearing bushing (8) on at least one side part (4, 5, 24, 25), wherein the shaft (2) is rotatably received and supported in the bearing bushing (8), with a scraper (7, 27) for removing ice formed from the liquid on the surface of the evaporator roller (1, 21), with a trough section (6, 26) that can be detachably and liquid-tightly connected to the two side sections (4, 5, 24, 25), which in a trough section cleaning position is completely removed from the side sections (4, 5, 24, 25), and which in an operating position is arranged between the two side sections (4, 5, 24, 25) and together with the side sections (4, 5, 24, 25) forms an upwardly open trough that receives the liquid to be frozen and at least partially surrounds the evaporator roller (1, 21), and with a slot (9, 29) in at least one of the two side parts (4, 24), through which the tub part (6, 26) can be passed in an axial direction and, when transitioning from the tub part cleaning position to the operating position, can be inserted from the side of the side part (4, 24) facing away from the evaporator roller (1, 21) into the space between the two side parts (4, 5, 24, 25), with a continuous course of the slot (9, 29) in the direction of the longitudinal axis (10, 30) of the evaporator roller (1, 21) and the shaft (2), wherein the slot (9, 29) extends from the side of the side part (4, 24) facing the evaporator roller (1, 21) to the side of the side part (4, 24) facing away from the evaporator roller (1, 21).

Description

State of the art

[0001] The invention relates to a device for producing flake ice from a liquid, comprising a trough for receiving the liquid, an evaporator roller rotatably arranged relative to the trough, and a scraper for removing ice formed from the liquid on the surface of the evaporator roller.

[0002] These devices are used to produce ice in the form of thin flakes from liquids, especially water. Due to the shape of the ice pieces, this type of ice is called flake ice. Flake ice is used, for example, in the food industry for food production and to keep food fresh during transport and storage. In this way, meat, fish, or seafood, for instance, can be stored and transported without compromising their quality. Flake ice is also used in sausage production. Besides water, other liquids such as juices, sauces, eggs, milk, and dairy products can also be processed into flake ice. Furthermore, flake ice produced from various liquids is used in medicine, pharmaceuticals, and engineering.

[0003] In all areas of application, the hygiene requirements for flake ice production equipment are particularly stringent. This includes the removal of pathogens, especially bacteria, viruses, fungi, prions, and protozoa, from all surfaces that come into contact with the flake ice. The equipment must be thoroughly cleaned and, if necessary, disinfected at regular intervals. Of particular importance is the cleaning of the hopper, which contains a reservoir of liquid during operation and downtime between uses. Germs can multiply unhindered in this liquid reservoir. Simply emptying the hopper regularly is insufficient to reliably eliminate pathogens from the surfaces.

[0004] From DE 41 08 911 A1, a flake ice machine is known, comprising a trough and an evaporator roller rotatably mounted on the trough. The machine is equipped with a switchable cleaning device for rinsing the trough and the evaporator roller. For this purpose, the cleaning device has several spray nozzles for spraying the evaporator roller and the trough with a cleaning agent. The evaporator roller and the trough are rigidly connected. A disadvantage of this design is that visual inspection of the trough's condition with regard to limescale deposits and other contaminants is severely limited. Furthermore, removing the trough without disassembling the flake ice machine is not possible.

[0005] From DE 102 21 523 A1, a flake ice machine is known with an evaporator roller rotatably mounted on a trough, in which the trough consists of two side parts and a trough section detachably connected to the side parts. For cleaning the trough, the trough section is removed from the side parts. However, a disadvantage of this design is that the end regions of the trough section rest against the end faces of the side parts and are pressed against them by a clamping device. The arrangement and tensioning of the clamping device complicates the attachment of the trough section to the side parts. Furthermore, the seal between the trough section and the side parts is highly dependent on the force with which the clamping device presses the trough section against the side parts along its entire end region. If this force is insufficient in certain sections, the trough leaks. In this case, the liquid to be frozen can escape.Furthermore, the drain for the liquid cannot be located at the lowest point of the tub, which is why the tub cannot be completely emptied before the tub section is removed.

[0006] The invention is based on the objective of providing a device for producing flake ice which allows a tub part to be detached with just a few steps in order to carry out a thorough cleaning of the tub part and the components remaining on the device that come into contact with the liquid to be frozen, and in which the tub is reliably sealed against the escape of the liquid to be frozen in the operating position. The invention and its advantages

[0007] The device according to the invention for producing flake ice with the features of claim 1 is distinguished from the prior art in that it is equipped with two side parts in which the shaft of the evaporator roller is rotatably mounted, wherein at least one of the two side parts has a continuous slot through which a trough part can be inserted axially between the two side parts. In its operating position, the trough part, together with the two side parts, forms an upwardly open trough that receives the liquid to be frozen and at least partially surrounds the evaporator roller. The two side parts are fixedly arranged on the device. The shaft of the evaporator roller is rotatably mounted on the two side parts. For this purpose, at least one of the two side parts is equipped with a bearing bushing.Preferably, the other side part also has a bearing bushing or other rotary feedthrough for the shaft. While the two side parts define the sides of the basin, the basin part, in its liquid-tight operating position between the two side parts, forms a boundary for the basin at the front, rear, and bottom. In the second position of the basin part, which is referred to as the basin part cleaning position, the basin part is located outside the two side parts and at any desired distance from them. It can be moved far enough away from the two side parts to allow and facilitate thorough cleaning of the basin part. After the basin part is removed, the two side parts and the evaporator roller are no longer covered by the basin part and can therefore also be cleaned from all sides.

[0008] The transition of the tub section from the operating position to the tub cleaning position, and vice versa, is achieved by sliding the tub section axially through the slot in one of the side panels. In the operating position, the tub section is pushed through the slot far enough that its end face, pointing forward in the direction of the sliding movement, rests against the side panel opposite the slotted side panel. The axial direction is defined by the longitudinal axis of the evaporator roller and the shaft. The evaporator roller and shaft are rotationally symmetrical with respect to a common longitudinal axis, which is the center of rotation of the evaporator roller. During the transition from the operating position to the tub cleaning position, the tub section is pulled through the slot out of the space between the two side panels.When transitioning from the tub cleaning position to the operating position, the tub section is pushed through the slot of one side panel into the space between the two side panels.

[0009] The slot in one of the two side pieces is continuous in the axial direction, allowing the tub section to be pushed through it axially. In a plane perpendicular to this, the slot's shape corresponds to the tub section in its operating position. In this plane, the slot is also continuous and at least as long as the tub section, allowing the tub section to pass completely through it. The distance between the slot and the longitudinal axis of the shaft is greater than the radius of the evaporator roller. This applies to both the inner side of the slot facing the longitudinal axis and the outer side facing away from it. This ensures that the tub section, in its operating position, maintains a distance from the evaporator roller and surrounds it.

[0010] The slot thus serves not only for the installation and removal of the tub section but also secures it in the operating position between the two side panels. To further secure the tub section in the operating position, it can be equipped with fastening devices that engage one or both side panels. For example, the tub section can be fitted with a shoulder or flange that, in the operating position, rests against the outer surface of the slotted side panel facing away from the evaporator roller. A secure connection between the shoulder or flange and the side panel can be created using screws. Instead of a screw connection, a clamping, tensioning, or pressure device can also be used to attach the tub section to the side panels. Furthermore, the second side panel can also be equipped with a slot or groove.The slot or groove advantageously has the same profile as the slot in the first side panel. In this case, the tub section is held in the operating position by both side panels. Alternatively, the second side panel, in the area where the tub section rests against it in the operating position, can be free of a groove or slot and have a flat surface.

[0011] The tub section can be made of metal or plastic, for example. The material of the tub section and the material of the side panels can be identical or different.

[0012] In the operating position, the tub section rests against the two side sections, creating a seal. For this purpose, the side sections and / or the tub section are equipped with seals. Compared to known devices, the device according to the invention has the advantage that the seal does not have to be located in the area of ​​the tub section or the side sections where the tub section is held by the side sections. In particular, the seal does not have to be located in the slot. The seal can be located on the end faces of the tub section, on the inner surfaces of the side sections facing the evaporator roller, or on the outer surfaces of the side sections facing away from the evaporator roller. In any case, a reliable seal between the tub section and the side sections can be achieved.

[0013] The scraper or a crossbeam supporting the scraper is preferably arranged on both side parts. The scraper or crossbeam is preferably located at least partially above the slot. In this way, the removal and installation of the tub section is not hindered by the scraper. In particular, the scraper does not need to be removed from the device before the tub section is installed or removed.

[0014] The bathtub section can be inserted into the space between the two side panels with a single movement and removed from the space with a single movement. This makes installing and removing the bathtub section quick and easy.

[0015] According to an advantageous embodiment of the invention, a projection is arranged on one of the two end faces of the tub section. In the operating position, this projection rests against the side of the slotted side section facing away from the evaporator roller. The projection is thus not pushed through the slot; it remains on the outside of the slotted side section. The projection extends outwards and / or inwards from the tub section in a plane perpendicular to the longitudinal axis of the tub section. The longitudinal axis of the tub section corresponds to the longitudinal axis and axial direction of the device, which is defined by the longitudinal axis of the evaporator roller and the shaft. The projection therefore extends radially and has a greater dimension perpendicular to the axial direction than the slot.

[0016] According to a further advantageous embodiment of the invention, the attachment is equipped with screw receptacles. In addition, the slotted side part is provided with threaded holes for the screws. The attachment of the tub part can be firmly connected to the side part via these screws.

[0017] According to a further advantageous embodiment of the invention, the device is equipped with a detachable pressure element. Furthermore, the slotted side part is provided with several receptacles for the pressure element on the side facing away from the evaporator roller. These receptacles press the pressure element, in its position on the receptacles, against the projection of the tub part. This, in turn, presses the projection of the tub part against the side part. The receptacles can, for example, be pins that project outwards from the side part in an axial direction. At their end facing away from the side part, the pins have a larger cross-section than in the section between. For this purpose, the pins can, for example, be equipped with a plate-like or disc-like section.This plate-like or saucer-like section on the pins exerts a force on the pressure element, pressing the pressure element against the base of the tub part.

[0018] The pressure element can, for example, be plate-shaped. Since the pressure element presses the extension of the tub section against one of the two side sections, its shape in a plane perpendicular to the longitudinal axis of the device preferably corresponds substantially to the shape of the extension. In this way, the force exerted on the pressure element by the fixtures can be transferred evenly to the extension.

[0019] According to a further advantageous embodiment of the invention, a bolt is arranged on the side of the slotted side panel facing away from the evaporator roller. The pressure element is equipped with a recess for the bolt. When the pressure element is brought near the side panel, its recess can be placed onto the bolt. For this purpose, the diameter of the recess is equal to or larger than the diameter of the bolt. The pressure element can be rotated around the bolt to secure it to the side panel, thereby engaging with the receptacles of the side panel. Preferably, the pressure element is equipped with a handle for manual torque application.

[0020] According to a further advantageous embodiment of the invention, the attachment is equipped with a seal on the side that rests against the side part in the operating position. This seal is pressed into the space between the attachment and the side part by the screws or other devices.

[0021] According to an advantageous embodiment of the invention, the tub section has a curved or angled shape both in the operating position and in the tub section cleaning position (detached from the side parts). It forms part of a cylindrical shell, the cylinder being able to have a round or square base. In this case, the tub section does not change its shape when transitioning from the tub section cleaning position to the operating position. It is rigid. The shape is retained.

[0022] According to a further advantageous embodiment of the invention, the tub section is flexible and, in the operating position, is pressed into a shape defining the tub by one or both side parts. In this case, the tub section has a different shape in the tub cleaning position than in the operating position. The tub section is only brought into its operating position shape when inserted into the slot of one of the side parts. For this to occur, the tub section must have a higher elasticity than a tub section that does not change its shape when transitioning from the tub cleaning position to the operating position.

[0023] According to a further advantageous embodiment of the invention, the side part opposite the slotted side part is equipped on the side facing the evaporator roller with a groove that receives the tub part in the operating position. The groove has the same profile as the slot in a plane perpendicular to the axial direction. The tub part is thus held in its operating position by the slot in one side part and by the groove in the other side part. A seal can be arranged in the groove to provide a seal between the side part and the tub part in the operating position. Alternatively, a seal can also be arranged on the end face of the tub part. In this case, it is not necessary to install a seal in the groove of the side part.This has the advantage that the groove can be cleaned more easily, and that replacing the seal on the front of the tub part is easier, since the front of the tub part is more easily accessible when the tub part is removed than the groove of the side part.

[0024] According to a further advantageous embodiment of the invention, the scraper is arranged on a crossbeam. The crossbeam is attached at one end to each of the two side parts and aligned parallel to the evaporator roller. The crossbeam with the scraper is preferably positioned at least partially above the slot. This has the advantage that the scraper does not need to be removed when installing or removing the tub section. It does not interfere with the installation or removal process. Furthermore, the scraper can be attached between the two side parts without the crossbeam. For this purpose, the scraper can, for example, be clamped between the two side parts.

[0025] According to a further advantageous embodiment of the invention, the slot of one side part ends directly below the attachment of the scraper. Thus, both the slot and the tray part arranged in the slot extend right up to the scraper.

[0026] According to a further advantageous embodiment of the invention, at least one spacer rod or spacer profile is arranged between the two side parts, parallel to the evaporator roller. This is preferably located either outside the tub section in the operating position or on the upward-facing side of the tub section in the operating position. With such a mounting, the spacer rod or spacer profile does not come into contact with the liquid to be frozen contained in the tub. The spacer rod or spacer profile stabilizes the two side parts. It ensures that the distance between the two side parts remains constant and does not change undesirably, regardless of whether the tub section is located between the side parts or outside the device.Furthermore, one or more spacer rods or profiles can support the tub section in the operating position from below or from the side, thus ensuring that the tub section is reliably held in this position. In this case, one end of the spacer rods or profiles is positioned near the slot. When the tub section is inserted and removed, it rests against the spacer rods or profiles, which then act as guides. A spacer rod or profile positioned above the tub section in the operating position can accommodate an inlet for the liquid to be frozen, an inlet for a cleaning fluid, and / or a float switch. These components are advantageously detachable from the device so that they can be quickly and easily removed before cleaning.

[0027] According to a further advantageous embodiment of the invention, an inlet for the liquid to be frozen and / or for a cleaning agent and / or a float switch is arranged on one or both side panels. Each of these components can be arranged on a side panel. Preferably, the components are detachably attached to the side panel so that they can be removed for cleaning the device. Furthermore, they are preferably arranged on the side panels in such a way that they do not obstruct or impair the installation and removal of the tub section.

[0028] According to a further advantageous embodiment of the invention, a bracket is detachably attached to or between the two side parts. An inlet for the liquid to be frozen and / or an inlet for a cleaning agent and / or a float switch are arranged on this bracket. The bracket can, for example, be designed as an elongated component that is suspended from above on the two side parts. For this purpose, grooves can be provided in the side parts into which the bracket is inserted. The bracket can be equipped with receptacles for the inlet of the liquid to be frozen, for the inlet of a cleaning agent, and / or for the float switch. The bracket is preferably located on the upward-facing side of the tub section in the operating position. In this case, the installation and removal of the tub section is not hindered by the bracket and the components arranged on the bracket.In particular, the inlet for the liquid to be frozen does not need to be removed from the device to remove the tub section. It is also possible to attach one or two of the aforementioned parts to a side panel and the remaining part(s) to the bracket.

[0029] Further advantages and advantageous embodiments of the invention can be found in the following description, the drawing and the claims. drawing

[0030] The drawing shows two embodiments of the device according to the invention. They show: Fig. 1 First embodiment of a device for producing flake ice in perspective view with a tub part in tub part cleaning position, Fig. 2 Device according to Fig. 1 in different perspective representations, Fig. 3 Device according to Fig. 1 in a view according to Fig. 2 with the tub section partially inserted into the space between the side panels, Fig. 4 Device according to Fig. 1 in a view according to Fig. 2 with tub section in operating position, Fig. 5 Second embodiment of a device for producing flake ice in perspective view with a tub part which is partially inserted into the space between the side parts, Fig. 6 Device according to Fig. 5 with the tub section fully inserted into the space between the side parts and a pressure element, Fig. 7 Device according to Fig. 6 with pressure element attached to the tub part, Fig. 8 Device according to Fig. 7 with a pressure element clamped to the side panel. Description of the exemplary embodiment

[0031] In Fig. Figure 1 shows a first embodiment of a device for producing flake ice, comprising an evaporator roller 1, a shaft 2 of the evaporator roller 1, a rotary drive 3, a first side part 4 and a second side part 5, a trough part 6, and a scraper 7. The evaporator roller 1 is fixedly connected to the shaft 2. The shaft 2 is rotatably mounted in both the first side part 4 and the second side part 5 via bearing bushings 8. The bearing bushing is not visible on the first side part 4 because it is concealed within Fig. 1 through the evaporator roller and into the Fig. 2, Fig. 3 to Fig. 4 is covered by the rotary drive 3. In Fig. However, the bearing bushing 8 is visible in the second side part 5. The first and second side parts 4, 5 are designed as plates. They are arranged parallel to each other. The first side part 4 is equipped with a slot 9. This slot extends through the device in the axial direction. The axial direction is defined by the common longitudinal axis 10 of the evaporator roller 1 and the shaft 2. The shaft 2 and the evaporator roller 1 rotate about this axis. It represents the center of the rotational movement. The trough part 6 is located in Fig. 1 outside the two side parts 4 and 5 and does not touch the other components of the device. This position of the tub section 6 corresponds to the tub section cleaning position. Several spacer rods 11 are arranged between the two side parts 4 and 5. One end of the spacer rods 11 is attached to the first side part 4 and the other end to the second side part 5. Furthermore, a bracket 12 is located on the upward-facing side of the two side parts 4 and 5, to which an inlet 13 for the liquid to be frozen, an inlet 14 for a cleaning agent, and a return 15 for a cleaning agent or a cleaning agent mixture, which flows out of the tub at the bottom, are attached. The tub is moved into the operating position by the tub section 6 according to Fig. 4 and the side parts 4 and 5 are formed. The tub is in Fig. Figure 4 shows the tub section 6 in its operating position between the two side sections 4 and 5. The drain on the underside of the tub is not shown in the drawing. A cleaning agent or cleaning agent mixture introduced into the tub can be circulated and, after flowing out of the tub, conveyed back into the tub via a line (not shown in the drawing) and the return line 15. This enhances the cleaning effect. Such cleaning takes place with the tub section installed. Furthermore, the first side section 4 inside the tub section 6 is in its operating position as shown in the drawing. Fig. 4 A float switch 20 is arranged. This float switch 20 allows the fill level in the tub to be checked. Thanks to their positioning, the inlets 13 and 14, the return 15, and the float switch 20 can remain on the device during the installation and removal of the tub section 6. This facilitates the installation and removal of the tub section 6.

[0032] The shape of slot 9 is particularly good in Fig. 2 can be seen. In this illustration, the tub part 6 is located as in Fig. 1 in the tub cleaning position. The path of the slot 9 corresponds in a plane perpendicular to the longitudinal axis 10 to the path of the tub part 6 in the corresponding plane. The path has a curve. The curvature is greater at the end facing the scraper 7 than at the other end of the slot 9. The width of the slot is only slightly greater than the thickness of the tub part 6. This supports the tub part 6 by the inner sides of the slot 9 and holds it in its position. Fig. The operating position shown in section 4 is maintained. Furthermore, the position of the tub section 6 is predetermined within narrow limits.

[0033] In Fig. In Figure 3, the tub section 6 is partially inserted into the space between the two side sections 4 and 5. A portion of the tub section remains outside this space on the outer side of the first side section 4, facing away from the evaporator roller 1. The tub section is pushed into the device parallel to the longitudinal axis of the evaporator roller 1. It is guided through the slot 9 and along the spacer rods 11 until its end face, facing forward in the direction of movement, abuts the second side section 5. (See illustration below.) Fig. In this illustration, the trough section 6 is fully inserted into the space between the two side parts 4 and 5. In this position, the trough section 6 is in its operating position, where it forms an upward-opening trough together with the two side parts 4 and 5 to receive the liquid to be frozen. In this position, the trough section 6 is positioned at a distance from the evaporator roller 1 and does not touch it. During the production of flake ice, the space between the evaporator roller 1 and the trough section 6 is at least partially filled with the liquid to be frozen.

[0034] The tub section 6 is equipped at one end with a projection 16. This is positioned according to the operating position. Fig. The projection 16 abuts the outer side of the first side part 4, facing away from the evaporator roller 1. It does not pass through the slot 9. Its extent in a plane perpendicular to the longitudinal axis of the device is greater than the width of the slot 9 in the corresponding plane. This refers to the tub part 6 in its operating position. The projection 16 thus forms a stop when the tub part is inserted into the slot 9. The movement of the tub part 6 into the slot 9 is terminated when the projection 16 rests against the side of the first side part 4 facing away from the evaporator roller 1 and when the end face of the tub part 6 facing away from the projection 16 rests against the second side part 5. The distance between the two parallel side parts 4, 5, the length of the tub part 6 in the axial direction, and the projection 16 must be coordinated such that both of these conditions are met simultaneously.In this case, the tub section 6 can be connected to the two side sections 4, 5 in a liquid-tight manner.

[0035] The approach has a groove on its side facing the side part 4 for receiving a seal 19. This is in Fig. 1. Furthermore, the extension 16 is equipped with receptacles 17 for screws. The screws are not shown in the drawing. They could, for example, be star-grip screws. In the operating position, the receptacles 17 are aligned with threaded holes 18 in the first side part 4. The screws inserted into the receptacles 17 and the threaded holes 18 press the extension 16 against the outside of the first side part 4. A reliable seal is thereby created between the first side part 4 and the tub part 6 by means of the seal 19. Another seal is arranged either on the second side part or on the end face of the tub part 6 facing away from the extension 16. This seal is not shown in the drawing. It ensures a seal between the tub part 6 and the second side part 5.By attaching the fitting 16 to the first side part 4, the tub section is firmly connected to the device and secured to the two side parts 4 and 5. In this operating position, the tub section 6 can also be supported from below by the spacer rods 11.

[0036] To remove the tub section 6 from the two side sections 4 and 5, the screws of the attachment 16 are loosened. The tub section 6 is then pulled laterally out of the device in an axial direction through the slot until it is completely outside the gap between the two side sections 4 and 5 and outside the slot 9. This corresponds to the illustration shown in the figure. Fig. 1 and Fig. 2.

[0037] In the Fig. 5, Fig. 6, Fig. 7 to Fig. Figure 8 shows a second embodiment of a device for producing flake ice. Like the first embodiment, it has an evaporator roller 21, which is driven to rotate by a shaft (not visible in the drawing) and a rotary drive 23. The shaft is rotatably mounted in a first and a second side section 24, 25 of the device. The two side sections 24, 25, together with a trough section 26, form a trough for receiving a liquid to be frozen. A scraper 27 is arranged on the two side sections 24, 25, by which a frozen liquid can be removed from the evaporator roller. The first side section 24 has a slot 29 through which the trough section 26 can be inserted into and removed from the space between the two side sections 24, 25 in the axial direction. The axial direction refers to the longitudinal axis 30 of the shaft and the evaporator roller 21.The two side parts 24, 25 are connected to each other via spacer rods 31. The tub part 26 has a projection 36 which, in a plane perpendicular to the longitudinal axis 30, has a larger extent than the tub part 26 and the slot 29. This prevents the projection 36 from passing through the slot 29. The projection rests against the side of the first side part 24 facing away from the evaporator roller 21 when the tub part 26 is fully inserted into the space between the two side parts 24, 25. This is shown in . Fig. Figure 6 illustrates this. In contrast to the first embodiment, the tub section 26 is not attached to the first side section 24 by screws, but by an additional pressure element 37, which is designed as a crescent-shaped plate. This plate is attached to the first side section 24 by means of a bolt 38 and several receptacles 39. The pressure element 37 can be detached from the device with a single movement and can be attached to the device with a single movement. For this purpose, the pressure element 37 has a recess 40 that has the same or a larger diameter than the bolt 38. The pressure element 37 is guided over the bolt 38 by its recess 40, so that the pressure element is rotatably mounted on the bolt. This is shown in Fig. Figure 7 shows the clamping element. The clamping element also has a handle 41, by means of which the clamping element 37 can be manually brought into contact with the device and by means of which a torque can be applied to the clamping element 37. The receptacles 39 for the clamping element 37 project axially outwards from the first side part 24. They have a first section 42 with a smaller diameter and a second section 43 with a larger diameter. The second section 43 is designed to be disc-shaped. When the clamping element 37 is rotated about the bolt 38, sections of the clamping element 37 are pivoted into the space between the disc-shaped second section 43 of the receptacles 39 and the projection 36 of the tub part 26, which abuts the first side part 24, and clamped there. To ensure that the rotational movement reaches a defined endpoint, the clamping element has several notches 44 on its periphery.The rotational movement is stopped when the notches 44 contact the corresponding receptacles 39. In this embodiment, a total of four receptacles 39 are provided. Three receptacles 39 engage the radially outer side of the pressure element 37, and one receptacle 39 engages the radially inner side of the pressure element 37.

[0038] To attach the tub section 26 to the two side sections 24, 25, the tub section 26 is first inserted through the slot 29 into the space between the two side sections 24, 25. This is in Fig. Figure 5 shows that the tub section 26 is completely enclosed in the space between the two side sections 24, 25 when the projection 36 of the tub section 26 rests against the outside of the first side section 24 and the end face of the tub section 26 opposite the projection 36 rests against the second side section 25. This is shown in Fig. Figure 6 shows the projection 36 having a recess 45 for the bolt 38. Furthermore, the bolt is axially longer than the thickness of the projection 36, so that the bolt 38 projects outwards beyond the projection 36. The pressure element 37 is brought towards the device and its recess 40 is placed onto the bolt 38. This is shown in Fig. Figure 7 shows that in this position, the pressure element 37 is not yet engaged with the receptacles 39 of the first side part 24. By rotating the pressure element 37 counterclockwise, sections of the pressure element 37 are pivoted under the plate-like second sections 43 of the receptacles 39. This clamps the pressure element 37 against the receptacles 39 and presses it against the projection 36 of the tub part 26. The tub part 26 is thereby pressed against the first side part 24. The rotational movement stops when the pressure element 37 rests against the receptacles 39 with the notches 44.

[0039] The pressure element 37 further comprises an elongated hole 46, which is wider at one end than at the other. When the pressure element 37 is placed on the side part 24, the elongated hole 46 guides it over one of the receptacles 39, so that the receptacle 39 passes through the pressure element 37. For this purpose, the width of the elongated hole 46 at one end is essentially as large as the diameter of the plate-like second section 43 of the receptacle 39. When the pressure element 37 is rotated about the bolt 38, the receptacle 39 slides in the elongated hole 46. At the second end of the elongated hole 46, which faces away from the wider end, the width essentially corresponds to the diameter of the first section 42 of the receptacle 39.

[0040] To remove the tub section 26 from the two side sections 24, 25, the clamping element 37 is first rotated clockwise around the bolt 38 using the handle, so that it releases from the receptacles 39. It is then removed from the bolt 38, the projection 36, and the first side section 24. Finally, the tub section 26 is pulled out of the space between the two side sections 24, 25 through the slot 29 and removed from the device.

[0041] The device according to the second embodiment is equipped with a cover 47 which is arranged on the two side parts 24, 25.

[0042] All features of the invention can be essential to the invention, both individually and in any combination. Reference figures 1 evaporator roller 2nd wave 3 Rotary drive 4 first side panel 5 second side panel 6 Bathtub section 7 scrapers 8 Bearing bushing 9 slots 10 Longitudinal axis 11 Spacer bar 12 bracket 13 Inlet for the liquid to be frozen 14 Inlet for a cleaning agent 15 Return for a cleaning agent or a cleaning agent mixture 16 Approach 17 screw holes 18 threaded holes 19 Seal 20 float switches 21 Evaporator roller 22 23 Rotary drive 24 first side panel 25 second side panel 26 Bathtub section 27 scrapers 28 29 slots 30 Longitudinal axis 31 Spacer bar 32 33 34 35 36 Approach 37 Pressure element 38 bolts 39 recordings 40 Exclusion 41 handle 42 first section of the recording 43 second section of the recording 44 notch 45 Exclusion 46 Slotted hole 47 lids

Claims

[1] Device for producing flake ice from a liquid with a cylindrical evaporator roller (1, 21), with a shaft (2) on the evaporator roller (1, 21) transmitting a torque of a drive (3, 23) to the evaporator roller (1, 21), wherein the evaporator roller (1, 21) and the shaft (2) are rotationally symmetric with respect to a common longitudinal axis (10, 30) which is the center of the rotational motion, with two side parts (4, 5, 24, 25) between which the evaporator roller (1, 21) is rotatably arranged, with at least one bearing bushing (8) on at least one side part (4, 5, 24, 25), wherein the shaft (2) is rotatably received and supported in the bearing bushing (8), with a scraper (7, 27) for removing ice formed from the liquid on the surface of the evaporator roller (1, 21), with a trough section (6, 26) that can be detachably and liquid-tightly connected to the two side sections (4, 5, 24, 25), which in a trough section cleaning position is completely removed from the side sections (4, 5, 24, 25), and which in an operating position is arranged between the two side sections (4, 5, 24, 25) and together with the side sections (4, 5, 24, 25) forms an upwardly open trough that receives the liquid to be frozen and at least partially surrounds the evaporator roller (1, 21), and with a slot (9, 29) in at least one of the two side parts (4, 24), through which the tub part (6, 26) can be passed in an axial direction and, when transitioning from the tub part cleaning position to the operating position, can be inserted from the side of the side part (4, 24) facing away from the evaporator roller (1, 21) into the space between the two side parts (4, 5, 24, 25), with a continuous course of the slot (9, 29) in the direction of the longitudinal axis (10, 30) of the evaporator roller (1, 21) and the shaft (2), wherein the slot (9, 29) extends from the side of the side part (4, 24) facing the evaporator roller (1, 21) to the side of the side part (4, 24) facing away from the evaporator roller (1, 21). [2] Device according to claim 1, characterized by , that the slot (9, 29) has a continuous course in a plane perpendicular to the direction of the longitudinal axis (10, 30), wherein the distance between the longitudinal axis (10, 30) of the shaft (2) on the one hand and each section of the slot (9, 29) on the other hand is greater than the radius of the evaporator roller (1, 21). [3] Device according to claim 1 or 2, characterized by, that on one of the two end faces of the tub part (6, 26) a projection (16, 36) is arranged which in the operating position rests against the side of the side part (4, 24) equipped with the slot (9, 29) facing away from the evaporator roller (1, 21). [4] Device according to claim 3, characterized by , that the attachment (16) is equipped with receptacles (17) for screws, and that the side part (4) having a slot (9) is equipped with threaded holes (18) for the screws. [5] Device according to claim 3, characterized by, that it is equipped with a pressure element (37) that can be detached from the device, and that the side part (24) having a slot (29) is equipped on the side facing away from the evaporator roller (21) with several receptacles (39) which press the pressure element (37) in its position arranged on the receptacles (39) against the projection (36) of the tub part (26) and thus press the projection (36) of the tub part (26) against the side part (24). [6] Device according to claim 5, characterized by , that a bolt (38) is arranged on the side part (24) having a slot (29) on the side facing away from the evaporator roller (21), that the pressure element (37) is equipped with a recess (40) for the bolt (38), wherein the pressure element (37) placed on the bolt (38) with the recess (40) is rotatable about the bolt (38) and can be brought into engagement with the receptacles (39) of the side part (24). [7] Device according to claim 6, characterized by, that the pressure element (37) is equipped with a handle (41) for manual transmission of a torque to the pressure element (37). [8] Device according to claim 3, 4, 5 or 6, characterized by , that the approach (16, 36) is equipped with a seal (19) on its side which is adjacent to the side part (4, 24) in the operating position of the tub part (6, 26). [9] Device according to any one of the preceding claims, characterized by , that the tub section (6, 26) has a curved or angled shape both in the operating position and in the tub section cleaning position detached from the side sections (4, 5, 24, 25). [10] Device according to any one of the preceding claims, characterized by , that the tub part (6, 26) is flexible and in the operating position is pressed into a shape defining the tub by one or both side parts (4, 5, 24, 25). [11] Device according to any one of the preceding claims, characterized by, that the side part (5, 25) arranged opposite the side part (4, 24) with slot (9, 29) is equipped on the side facing the evaporator roller (1, 21) with a groove which receives the tub part (6, 26) in the operating position, and that the groove has the same course in a plane perpendicular to the direction of the longitudinal axis (10) as the slot (9, 29). [12] Device according to any one of the preceding claims, characterized by , that the scraper (7, 27) is arranged on a crossbar, and that the crossbar is attached to the two side parts (4, 5, 24, 25). [13] Device according to any one of the preceding claims, characterized by , that the slot (9, 29) of one side part (4, 24) ends immediately below the attachment of the scraper (7, 27). [14] Device according to any one of the preceding claims, characterized by, that at least one spacer bar (11) or spacer profile is arranged between the two side parts (4, 5) parallel to the evaporator roller (1). [15] Device according to any one of the preceding claims, characterized by , that an inlet for the liquid to be frozen and / or an inlet for a cleaning agent and / or a float switch (20) are arranged on the side parts (4, 5, 24, 25). [16] Device according to any one of the preceding claims, characterized by , that a holder (12) is detachably attached to or between the two side parts (4, 5, 24, 25), on which an inlet (13) for the freezing liquid and / or an inlet for a cleaning agent (14) and / or a float switch (20) are arranged.

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