Swing door assembly for a refrigerated display cabinet, and refrigerated display cabinet

Abstract

The invention relates to a swing door assembly for a refrigerated display cabinet, comprising a swing door and a lower and an upper rotary bearing for rotatably supporting the swing door, wherein the lower and upper rotary bearing are designed such that, when being opened, the swing door is moved from a starting position in a horizontal direction by a movement V relative to the cabinet body and, when being closed, the swing door is moved back to its starting position.

Description

[0001] Swing door arrangement for a refrigerated sales cabinet and refrigerated sales cabinet

[0002] The invention relates to a swing door arrangement for a refrigerated sales cabinet and to a refrigerated sales cabinet comprising the swing door arrangement.

[0003] Refrigerated cabinets with a vertical access opening for the presentation and sale of chilled or frozen food typically have hinged or sliding doors. Refrigerated cabinets with hinged doors require slightly more space but offer the most convenient access to the contents for customers, as the doors can be operated with minimal effort. In recent years, refrigerated cabinets have been continuously improved in terms of energy consumption, cleanability, and overall aesthetic appearance.

[0004] In the normal refrigeration range with temperatures from -5 to 10 °C, double-glazed doors are generally used. In the deep-freeze range, with temperatures from -15 °C to -30 °C, even triple-glazed doors are used, which has led to the doors being able to have a greater overall depth of several centimeters. In the deep-freeze range, hermetically sealed doors are used to prevent the refrigeration cabinet from icing up due to the ingress of warm, humid room air. Hermetic sealing is usually achieved using elastic sealing profiles, frequently using magnetic seals, which, however, increase the force required to open the door, are difficult to clean, and impair the aesthetics of the refrigeration cabinet.In the normal refrigeration sector, especially in the positive refrigeration sector, door seals are generally omitted, resulting in gaps between the door and the door frame, as well as between two directly adjacent swing doors. These gaps represent thermal weak points and also impair the aesthetics of the refrigerated cabinet. The goal is to keep the gaps between the doors and between the doors and the cabinet body as small as possible to minimize energy loss and the ingress of moist air into the refrigerated cabinet.

[0005] The smallest possible gap width is generally achieved by placing the axis of rotation of a swing door, viewed in a vertical cross-sectional plane of the door, not in the center plane of the door but in an outer corner area of ​​the cross-section, as shown, for example, in Figure 8 in EP 2908073. Nevertheless, a small gap remains between the closed door and the adjacent cabinet body, among other things because there are limits to the displacement of the axis of rotation into the corner area of ​​the door for reasons of mechanical stability. Likewise, the prior art sometimes proposes placing an axis of rotation in a vertical cross-sectional plane of the door even outside the door cross-section, which requires a corresponding door suspension that either extends beyond the door into the exterior of the refrigerated cabinet or extends laterally over the side edge.However, a door hinge that extends beyond the door level into the exterior space is undesirable for both technical and aesthetic reasons. A door hinge that extends out to the side of the door is also undesirable, as it can prevent or complicate the arrangement of multiple swing doors directly next to each other.

[0006] In EP2814360, for example, Figures 7 and 8, it is proposed to suspend the door leaves at two spaced-apart points on their top and bottom, allowing for a more complex movement curve of the door leaf than is the case with a revolving door. However, such suspensions require a more complex and elaborate mechanism, which takes up a lot of space and is expensive.

[0007] The object of the present invention is to provide an improved swing door assembly for a refrigerated display cabinet, particularly in the normal refrigeration range, which overcomes the disadvantages of the prior art, enables low energy consumption with convenient access to the goods in the refrigerated cabinet, and also ensures good cleaning properties and aesthetics. Furthermore, several swing door assemblies according to the invention should be able to be arranged directly next to one another, and the door hinges should extend only slightly or not at all beyond the front of the refrigerated cabinet into the exterior of the refrigerated cabinet.

[0008] The problem is solved by the independent claim. Preferred embodiments are set forth in the dependent claims.

[0009] The swing door arrangement according to the invention for a refrigerated sales cabinet with a cabinet body comprises a swing door and a lower and an upper pivot bearing for rotatably mounting the swing door on the cabinet body, wherein the swing door has a front side, a rear side, a top side, a bottom side, a side surface facing away from the axis, and comprises a viewing window, wherein the lower and upper pivot bearings are designed such that the swing door is displaced by a displacement V relative to the cabinet body when opened from an initial position in a horizontal direction and is displaced back to its initial position when the swing door is closed. In comparison to swing doors according to the prior art, the swing door arrangement according to the invention does not perform a purely rotational movement when opening, but rather the swing door is displaced in a horizontal direction when the door is opened.This allows the swing door to be guided very close to the cabinet body when closing, reducing the gap between the swing door and the cabinet body or an adjacent door. Air exchange between the interior of the refrigerated cabinet and the exterior is correspondingly reduced. Furthermore, the small gap between the swing door and the cabinet body also improves the aesthetics of the refrigerated cabinet when closed. Finally, the swing door can also be easily cleaned when open, as the swing door can be positioned at a greater distance from neighboring swing doors and the cabinet body of the refrigerated cabinet when open than is the case with a fixed pivot axis.

[0010] A refrigerated sales cabinet is a refrigerated unit used for the direct sale of chilled products, particularly food. Such a refrigerated unit comprises a cabinet body with a thermally insulated, cooled interior for storing the products, which is formed by the cabinet body with insulating walls, and an access opening that is closed, for example, by door elements or sliding elements. A refrigerated sales cabinet can, for example, have a height of 1 m to 2.5 m and a width of 1 m to 5 m. The individual door elements can extend over the entire height of the access opening of the refrigerated unit, but several door or window elements can also be arranged one above the other. The access opening can be aligned vertically or horizontally, but can also have any angle of inclination in between. A refrigerated sales cabinet can have a modular design so that the width of the refrigerated unit can be variably adjusted.The cabinet body can consist of several modules arranged side by side, each of which is a multiple of the width of the door elements. The two outer modules can also have side walls that define the refrigerated cabinet's sides and, if necessary, also provide thermal insulation. However, the body of a module for the middle section of a refrigerated cabinet does not need to have side walls. This way, a continuous interior of the refrigerated sales cabinet can be created, consisting of several corpora, with the door elements or window elements arranged directly next to one another.

[0011] A door can be any flat element for closing the access opening that has a viewing window. A door can have a door frame on one or more sides, but can also be frameless on the left and right sides when in operation. In the simplest case, it can be a pane made of a transparent material such as glass or polymer. The door can be opened manually and have a handle for the user. The handle can be attached to the viewing window or to the door frame. The door can also have a motorized drive to open the door.

[0012] The closing plane of a door is the plane in which the door, for example a central plane through the door, is in the closed position.

[0013] A viewing window comprises at least one transparent pane of a transparent material such as float glass or a polymer pane. However, it can also comprise multiple panes, e.g., in the form of multiple glazing or vacuum-insulated glazing.

[0014] A swing door is a door that can be moved from its closed position to its open position essentially by a rotary or pivoting movement. According to the invention, the movement of the sliding door does not have to be exclusively a rotary movement; the door can also move to a limited extent, for example, in the closing plane or the door plane.

[0015] A swing door arrangement comprises at least one swing door, but can also comprise multiple swing doors. Adjacent swing doors in a swing door arrangement can, for example, open in opposite directions or in the same direction.

[0016] A swing door assembly can be attached directly to a cabinet body of a refrigerated unit, or it can have a frame that is attached to the cabinet body and to which the swing door is attached via pivot bearings.

[0017] In the following description, the terms "horizontal" and "vertical" always refer to an operating state of the swing door assembly in which the swing door is in a vertical orientation, since swing doors are generally used with a vertical axis of rotation. However, swing doors can also be operated in a tilted or even horizontal orientation. The swing door assembly according to the invention can also be used with these rotation axis orientations. The terms "horizontal" and "vertical" therefore serve only to describe the swing door assembly according to the invention in a preferred orientation with a vertical axis of rotation.

[0018] A frontal view is understood to be the view of the refrigerated cabinet or the sliding door arrangement vertical to the door plane from the outside of the refrigerated cabinet, roughly corresponding to the view of a user of the refrigerated cabinet in operation. In a preferred embodiment of the swing door arrangement, the rotational movement of the swing door and the displacement V of the swing door are mechanically coupled by the lower and upper pivot bearings, such that the displacement V is predetermined by the opening angle α. The mechanical coupling of the rotational movement and the translational displacement in a horizontal direction enables a particularly reliable, energy-saving opening movement. Likewise, the opening angle of the door could be detected by a sensor and the position of the pivot bearings shifted by motor using linear actuators, although this could be technically more complex and more prone to errors.If a drive fails, the swing door could collide with the cabinet body and cause damage to the refrigerator.

[0019] With the mechanical coupling of the rotational movement of the swing door and the displacement V of the rotation axis as a function of the opening angle, the displacement V can be described as a function V(a) of the opening angle a. Preferably, the displacement V is not proportional to the opening angle a. Instead, the swing door preferably performs a greater displacement for small opening angles in a range from 0° to approximately 20° than for larger opening angles, for example in the range above 30°. An opening angle of 0° corresponds to the closed state of the revolving door. The gradient of the function V(a) therefore decreases with increasing opening angle, preferably it decreases monotonically and continuously.

[0020] In a preferred embodiment, the displacement V of the axis of rotation when the door is opened increases the distance between the axis-side side surface of the swing door and a swing door adjacent on the axis or the cabinet body and / or increases the distance between the rear of the swing door and the cabinet body. On the one hand, in a swing door arrangement according to the invention, the axis-side side surface of the swing door, i.e. the vertical side surface of the swing door on the side of the pivot bearings, can be adjacent to another swing door or the cabinet body, which is the case, for example, with a flat front surface of the refrigerated cabinet, as is shown, for example, in Fig. 8 of EP 2908073 and in Figure 1. In this case, the displacement V of the axis of rotation preferably takes place parallel to the closing plane of the swing door and, when opening, preferably in the direction of the vertical central axis of the swing door, so that the distance between the swing door and the axis-side adjacent swing door orthe cabinet body is enlarged when the swing door is opened.

[0021] Furthermore, there are also refrigerated cabinets where the swing doors are positioned in front of the cabinet body when viewed from the front, and the cabinet body is adjacent to the rear of the swing door. In this case, the displacement V of the rotation axis can occur perpendicular to the closing plane of the swing door when opening, away from the cabinet body, and toward the rear of the cabinet body when closing, thus reducing the gap between the swing door and the cabinet body.

[0022] Furthermore, it is conceivable that the swing door is moved in a horizontal direction at an angle to the closing plane when opened, whereby, for example, the rear distance of the swing door to the refrigerator body as well as the lateral distance to an adjacent door can be increased at the same time.

[0023] A further preferred embodiment is characterized in that, upon rotation of the swing door around a fixed axis of rotation, which corresponds to the horizontal position of the axis of rotation at an opening angle of 0°, the door would contact the adjacent swing door or the cabinet body. The horizontal displacement of the swing door is therefore preferably designed to prevent the swing door from colliding with other swing doors or the cabinet body.

[0024] In a preferred embodiment, the swing door assembly is mounted exclusively via the upper and lower pivot bearings. There is only one suspension point on the top and bottom.

[0025] In a further preferred embodiment, the upper pivot bearing is arranged at least partially above the top side of the revolving door, and the lower pivot bearing is arranged at least partially below the bottom side of the revolving door, relative to a vertical alignment of the revolving door. While a suspension of a swing door on the axis-side side surface of the revolving door is also conceivable, the revolving doors can be arranged directly next to one another if the swing door is suspended on the top and bottom sides. This allows the viewing window to be as large as possible and is visually uninterrupted or restricted by the pivot bearings, or only slightly so.The upper and lower pivot bearings each comprise an upper and lower part fastened to the swing door, as well as an upper and lower part fastened to the cabinet body, wherein the upper part fastened to the cabinet body extends vertically above the level of the top side of the swing door and the lower part fastened to the cabinet body extends below the level of the bottom side of the swing door, preferably being arranged completely above the top side or below the bottom side of the swing door.

[0026] In a further preferred embodiment, the viewing window comprises at least one glass pane and more preferably an insulating multiple glazing which comprises at least two glass panes. Particularly preferably, the swing door consists of a multiple glazing with two float glass panes which are spaced from each other at their two vertical edges by a transparent spacer, thereby enabling a good view of the products. On the horizontal edges, the multiple glazing can have a spacer which comprises a desiccant, for example a plastic profile or a metallic hollow profile filled with a desiccant. The multiple glazing can be filled with a noble gas, for example with argon, krypton or xenon.The swing door can be connected to the pivot bearing via an element for holding the multiple glazing, for example a U-shaped metal profile in which the multiple glazing can be glued or clamped, or a metal plate which is glued to the multiple glazing, for example with adhesive.

[0027] In a preferred embodiment, the lower pivot bearing of the swing door assembly comprises a static part, a translation part, and a rotation part, which are arranged substantially one above the other. The static part is designed to be attached to the cabinet body and remains static when the door is opened. The translation part is attached to the static part, is horizontally displaceable relative thereto, and undergoes the horizontal displacement when the door is opened. The rotation part is attached to the swing door and undergoes the horizontal displacement and the rotational movement when the door is opened. More preferably, the rotational part performs a purely rotary movement relative to the translation part when opening.

[0028] In order to be attached to the cabinet body, the static part can include screw holes, for example.

[0029] The static part, the translation part and the rotation part can each be made of plastic or metal, for example, preferably steel and more preferably stainless steel.

[0030] In a preferred embodiment, the swing door assembly is mounted exclusively via the upper and lower pivot bearings. There is only one suspension point on the top and bottom.

[0031] In a preferred embodiment, the horizontal displacement occurs in a direction parallel to a closing plane of the swing door, and the translational part on the static part can preferably only be displaced in this direction. The translational part can, for example, be arranged on the static part in the manner of a carriage, wherein lubricants or ball bearings can be provided to reduce frictional forces. In a horizontal direction perpendicular to the direction of displacement, the translational part is therefore preferably connected to the static part in a form-fitting manner. The maximum displacement can, for example, be in the range between 1 mm and 20 mm, preferably between 3 mm and 12 mm. The travel path of the translational part on the static part can be limited accordingly by mechanical stops.

[0032] In a preferred embodiment, the lower pivot bearing further comprises a rotation axis which enables rotation of the rotation part relative to the translation part and which is preferably rotatably mounted in an opening in the translation part and is fixedly or rotatably connected to the rotation part. This rotation axis therefore moves with the translation part. The rotation axis can be fixedly connected to the translation part or even formed integrally therewith, in which case the rotation part must be rotatably connected to the rotation axis. However, the rotation axis can also be fixedly connected to the rotation part or even formed integrally therewith, in which case the translation part must be rotatably connected to the rotation axis. The rotation axis preferably extends through a through-opening in the translation part through the entire translation part and is rotatable and vertically displaceable relative to the translation part.The rotary axis can, for example, be made of metal, preferably steel, more preferably stainless steel, such as the hardened martensitic stainless steel UNS S17400, also known as 17-4 PH, and have a diameter in the range of 20 mm to 30 mm.

[0033] In a preferred embodiment, the static part has two guide channels on its top side, the translation part also has two guide channels which extend through the translation part, and the rotation part has two guide pins on its bottom side which extend through the guide channels of the translation part into the guide channels of the static part. The guide pins of the rotation part can therefore engage simultaneously in the guide channels of the translation part and the rotation part, and are guided within the guide channels during a rotational movement of the rotation part. The guide channels each have a width which is slightly larger than the diameter of the guide pin, and the guide pins preferably have a round cross-section. They extend in a vertical direction into the static element and the translation part, relative to the operating state of the pivot bearing.The number of two guide pins is to be understood as a lower limit; for example, 3 or 4 guide pins would also be conceivable. In addition to a round cross-sectional shape, the guide pins can also have an elongated and curved cross-section, which gives the guide pins greater mechanical stability. The guide pins of the rotating part can either be firmly connected to a main body of the rotating part or formed integrally with it. The guide pins can, for example, be made of metal, preferably steel, more preferably stainless steel, such as the hardened martensitic stainless steel UNS S17400, also known as 17-4 PH, and have a diameter in the range of 2 mm to 6 mm, preferably 3 mm to 5 mm.

[0034] In a preferred embodiment, the guide channels in the translation part have the shape of circular segments, which are preferably arranged point-symmetrically around the axis of rotation, wherein the shape of the guide channels in the static part deviates from a circular segment and is designed such that the translation part is displaced in a horizontal direction with increasing opening angle α of the door. The shape of the guide channels in the static part can correspond to a modified circular segment, in which a guide pin is guided according to the opening angle α of the swing door, wherein the shape of the guide channels deviates from a circular segment in such a way that the guide channel is displaced horizontally by a displacement V(α) at ​​the position corresponding to an opening angle α.This makes it particularly easy to achieve a displacement V(a) of the translational part relative to the static part, corresponding to the opening angle a. The function V(a) can thus be specified by the shape of the guide channels.

[0035] In a preferred embodiment of the swing door arrangement, the guide pins in conjunction with the guide channels of the translation part and / or the rotation part define a maximum opening angle and thus a stop of the door.

[0036] In a preferred embodiment, the lower and / or upper pivot bearing comprises an integrated damping element, which is preferably a linear damping element and which dampens the horizontal movement of the translational part of the swing door. The damping element is preferably arranged between the translational part and the static element. Damping elements are generally intended to enable a damped, slow closing of a swing door, thereby protecting the refrigerated cabinet from excessive mechanical vibrations and stresses. Hydraulic or pneumatic damping cylinders are often provided in the prior art, which are attached to the cabinet body and swing door at a greater distance from the rotation axis.The integration of a damping function into a pivot bearing is mechanically complex because, due to the small lever arm, very high forces must be applied near the pivot axis to prevent the door from slamming shut (anti-slamming). This requires a very robust mechanical design of the pivot bearing components. In a swing door arrangement according to the invention, a damping element can advantageously be provided which dampens the linear movement of the translational part relative to the cabinet body or to the static part, which is not present in a normal pivot bearing with a fixed pivot axis. The damping element preferably consists of a damping cylinder of pneumatic or hydraulic design, which dampens the movement between the translational part relative to the static part. The damping cylinder can preferably be arranged between the static part and the translational part in such a way that it is encapsulated and not visible.This advantageously eliminates the need for a separate damper outside the pivot bearing.

[0037] Preferably, only the lower pivot bearing has a damping element. However, it is also conceivable that the upper pivot bearing, or only the upper pivot bearing, also has a damping element.

[0038] In a further preferred embodiment, the lower pivot bearing is designed such that, in a vertical operating state, the swing door is raised against gravity by a height h when the swing door is opened. With appropriate design, this makes it particularly easy to ensure that the swing door closes automatically again after opening.

[0039] In a further preferred embodiment, the lifting of the swing door during opening is achieved in that the rotation axis is arranged so as to be vertically displaceable in the translation part and the static element has a linear ramp on its upper side, which is arranged such that the lower end of the rotation axis slides over the linear ramp when the swing door is opened and is lifted by the linear ramp. The rotation part and thus the swing door can then be lifted via the rotation axis. Alternatively, the lifting of the swing door during opening is achieved in that the translation part has an axial ramp on its upper side and the rotation part has an axial counterpart on its underside, which are arranged in such a way that the axial counterpart slides over the axial ramp when the swing door is opened and the rotation part is lifted by the axial ramp.

[0040] Depending on the maximum opening angle of the swing doors, an axial ramp can preferably consist of two or even three partial ramps along its circumference, with the number of axial counterparts corresponding to this number. This allows the rotating part to be lifted at several support points, preventing the rotating part from tipping over.

[0041] The shape of the linear or axial ramp, or the height h of the linear or axial ramp, which corresponds to a specific opening angle and a specific horizontal displacement, determines the opening angles of the swing door at which a torque acts on the revolving door. Preferably, the ramp has a consistently monotonic gradient for opening angles in a range of 0° to 45°, so that at opening angles between 0° and approximately 45°, a closing torque always acts on the swing door, causing the swing door to close automatically.

[0042] The linear or axial ramp is preferably designed to be slope-free for an opening angle in a range from 70° to 120° or up to a maximum opening angle, so that no closing torque acts on the swing door in this opening angle range. This is useful, for example, for filling a refrigerated cabinet with products. Likewise, the linear or axial ramp can have a negative slope for an opening angle range below the maximum opening angle, so that the swing door is held open by a corresponding torque in this opening angle range. This can prevent the doors of the refrigerated sales cabinet from closing unintentionally, for example when filling the refrigerated cabinet from the front, e.g. due to air movement or unintentional contact with the door.

[0043] In a preferred embodiment, the upper pivot bearing is designed such that the sliding door is mounted so that it can move vertically. This ensures that the swing door can be raised when opened, as described above. However, slight deformations can occur in refrigerated cabinets when loaded with products, so that the position of the upper and lower pivot bearings can change slightly. The vertical displacement of the swing door in the upper pivot bearing prevents undesirable effects on the swing doors.

[0044] In a preferred embodiment, the upper pivot bearing comprises an upper static part, which part is designed to be attached to the cabinet body, and an upper rotating part which is attached to the swing door. The horizontal displacement of the upper rotating part is preferably achieved in a similar way to the lower pivot bearing. The upper rotating part can have two guide pins and the upper static part two guide channels whose shape deviates from a circular segment such that the displacement is effected in a horizontal direction. However, it is also conceivable for the guide pins and guide channels to be arranged on the other part, or for each of the two parts to have a guide channel and a guide pin.

[0045] The shape of the guide channels in a horizontal cross-section can correspond to the superposition of a circular arc with a displacement in the horizontal direction, as in the lower pivot bearing. In a particularly simple embodiment, an upper pivot axis can be omitted, so that the swing door is held on the upper pivot bearing only by the upper guide pins. Unlike the lower pivot bearing, the upper pivot bearing does not need a translational section. However, the upper pivot bearing can also have a translational section and an upper pivot axis, which can increase the stability of the upper pivot bearing.

[0046] In a preferred embodiment, the swing door arrangement has a very small installation depth of less than 4 cm in a direction perpendicular to the access opening of the refrigerated sales cabinet when the swing door is closed, preferably less than 3.0 cm and more preferably less than 2 cm. Any door handle that may be present is not taken into account when determining the installation depth. This small installation depth perpendicular to the access opening of the refrigerated sales cabinet is particularly important in practice, since both a projection of the pivot bearing into the exterior of the refrigerated cabinet and an extension of the upper pivot bearing from the door plane towards the cabinet body are undesirable. The small installation depth of the pivot bearing is made possible by the fact that the damping element is linear and arranged parallel to the closing plane of the door, and by the mechanical separation of translational and rotational movements, which are mechanically coupled.

[0047] In a preferred embodiment, the swing door of the swing door arrangement has a front panel with a vertical overhang on its upper side, wherein the upper pivot bearing is arranged substantially behind the vertical overhang of the front panel when the swing door is closed from a frontal view of the access opening of the refrigerated cabinet. Such a vertical overhang of the front panel creates a particularly uniform front of the refrigerated cabinet, which is not only aesthetically advantageous, but also makes the refrigerated cabinet easy to clean, provides good protection for the mechanical components, and reduces the risk of injury from pinching. In general, the swing door in this embodiment can have multiple panels, wherein all the panels arranged behind the front panel have a lower height than the front panel and preferably extend vertically below the upper pivot bearing.

[0048] In a preferred embodiment of a swing door arrangement with a front panel with a vertical projection, the upper pivot bearing further comprises a pivot arm and a translation arm, wherein the pivot arm and the translation arm run substantially parallel to the door plane in a closed state, wherein the translation arm is rigidly connected to the translation part and rotatably connected to one of the two guide pins, wherein the pivot arm is rotatably connected to the static part and rotatably connected to the other guide pin, so that when the swing door is opened, the pivot arm swings the swing door away from the cabinet body, so that a collision between the vertical projection of the front panel and the upper pivot bearing is avoided for all door positions when opening.

[0049] The invention further relates to a refrigerated display cabinet comprising a swing door arrangement according to the invention. The refrigerated display cabinet has at least one, but preferably two or more, swing door arrangements according to the invention. The swing doors can be arranged in pairs and open in opposite directions or in the same direction. Preferably, this is a refrigerated display cabinet for the normal refrigeration range, in which no hermetic seals are provided.

[0050] Further aspects and advantages of the invention are explained in more detail using the exemplary embodiments in conjunction with the accompanying figures. They show:

[0051] Figure 1 perspective view of a refrigerated sales cabinet

[0052] Figure 2a perspective view of a lower pivot bearing at opening angle 0°

[0053] Figure 2b perspective view of a lower pivot bearing at an opening angle of 90°

[0054] Figure 3a perspective view of a lower pivot bearing at opening angle 0°

[0055] Figure 3b perspective view of a lower pivot bearing at an opening angle of 90°

[0056] Figure 4a Top view of a lower pivot bearing at opening angle 0°

[0057] Figure 4b Top view of a lower pivot bearing at an opening angle of 90°

[0058] Figure 5a Vertical section through a section of a lower pivot bearing with linear ramp at an opening angle of 0°

[0059] Figure 5b Vertical section through a section of a lower pivot bearing with linear ramp at an opening angle of 90°

[0060] Figure 6 Perspective view of a section of another lower pivot bearing with axial ramp at an opening angle of approximately 60°

[0061] Figure 7a perspective view of an upper pivot bearing at opening angle 0°

[0062] Figure 7b perspective view of a lower pivot bearing at an opening angle of 90°

[0063] Figure 8 perspective view of a lower pivot bearing with a cover Figure 9a perspective view of an upper pivot bearing of a swing door with a vertical projection of the front panel in the closed state

[0064] Figure 9a perspective view of an upper pivot bearing of a swing door with a vertical projection of the front pane in the open state

[0065] Figure 10a Top view of an upper pivot bearing of a swing door with a vertical projection of the front panel in the closed state

[0066] Figure 10a Top view of an upper pivot bearing of a swing door with a vertical projection of the front pane in the open state

[0067] In the following description, when using the terms horizontal and vertical, it is further assumed that the sliding door arrangement according to the invention and its components are in their operating state, wherein the axis of rotation of the swing door is in a vertical orientation.

[0068] Figure 1 shows a perspective view of a refrigerated sales cabinet 10 according to the invention, which comprises three cabinet bodies 2. The cabinet bodies 2 are modular and arranged such that they form a common, connected cabinet interior without vertical side walls. Arranged in each cabinet body are a pair of counter-opening swing doors 3, with each swing door being suspended by means of a lower pivot bearing 1 and an upper pivot bearing 40. The swing doors have a front side 6 and a rear side 7, a side surface 4 on the axis, and a side surface 5 facing away from the axis. In the closed state, the swing doors 3 are located in a common closing plane and are arranged with a small horizontal distance from one another. Shelves for holding the refrigerated goods are arranged within the refrigerated cabinet 10.

[0069] The swing doors 3 have viewing windows 9 that provide a view of the cabinet interior. In this case, the viewing windows 9 extend across the entire swing door 3.

[0070] Figures 2a and 2b show a perspective view of a lower pivot bearing 1 with the swing door opening angle at 0° and 90°, respectively. The lower pivot bearing typically also includes a receiving unit for the swing door, which is not shown for reasons of clarity. In order to illustrate the internal structure of the lower pivot bearing, only the rear half of the translation part 22 is shown. The lower pivot bearing 1 includes a static part 21 at the bottom, on which the translation part 22 is slidably arranged. On the left side, between the static part 21 and the translation part 22, there is a damping element 32 with a pressure pin. The translation part 22 is slidably mounted on or in the static part.

[0071] 21 and is located at a right stop at an opening angle of 0° in Figure 2a and at a left stop at an opening angle of 90° in Figure 2b. Accordingly, the pressure pin 33 of the damping element 32 is maximally retracted into the damping cylinder at an opening angle of 0°.

[0072] On the right side of the upper pivot bearing 1, the rotation part 23 is arranged, which is in a lower position and at the right stop at an opening angle of 0°, while the rotation part 23 is rotated by 90° at an opening angle of 90°, raised vertically and also shifted to the left.

[0073] The rotating part 23 has two guide pins 30 on its underside, which extend through two guide channels in the translational part 29 into two guide channels in the static part 27. The guide pins 30 are arranged at a first horizontal end of the guide channels 27 in the static part 21 at an opening angle of 0° and at the other horizontal end of the guide channels 27 at an opening angle of 90°, so that the rotational movement of the rotating part 23 is correspondingly limited and a mechanical stop is formed for the movement of the swing door. When the rotating part 23 is in the raised position according to Figure 2b, a rotation axis 24 and a compression spring 31 can also be seen, wherein the rotation axis 24 extends through the translational part 22 (only half shown) to the rotating part 23 and raises it.

[0074] Figures 3a and 3b show a further perspective view of a lower pivot bearing 1 with the swing door opening at 0° and 90°, respectively. The translation part 22 is shown in full here. The displacement of the translation part is clearly visible.

[0075] 22 on the static part 21, as well as the rotation and lifting of the rotating part 23 when the swing door is opened. The rotating part 23 has a main body from which the guide pins extend vertically downward. When the swing door is opened at 0°, the main body of the rotating part 23 rests on the translational part 22.

[0076] Figures 4a and 4b show a top view of a lower pivot bearing 1 with the swing door opening at an angle of 0° and 90°, respectively. The positions of the guide pins 30 of the rotating part 23 are clearly visible in this top view. Partially visible are also the two guide channels in the translating part 22, which are shaped like circular segments and arranged with point symmetry. Each circular guide channel 22 has an angular range of approximately 90°. Figure 4b also shows one of the guide channels 27 in the static part. In a top view, this guide channel does not have the shape of a circular segment; rather, its shape, unlike a circular segment, corresponds to the superposition of a circular segment and a leftward translational movement. Therefore, when the rotating part 23 rotates from a 0° position to a 90° position, the translating part 22 is forced into a leftward translational movement by the guide pins 30.

[0077] Figures 5a and 5b show a vertical section through a portion of a lower pivot bearing 1 with a linear ramp 36 at an opening angle of 0° and 90°, respectively. In addition to the previously explained elements, these figures clearly show a pivot axis 24, which extends through a vertical through-opening in the translational part 22 into the rotational part 23. The pivot axis is pressed downward by a compression spring 31 and rests there in a 0° position on the lowest point of a linear ramp 36. When the door is opened, the pivot axis 24 is pushed over the translational part 22 over the linear ramp 36, whereby the pivot axis is raised and, through the translational part 22, raises the rotational part (23) and thus the swing door 3 (not shown). When the swing door is closed, the pivot axis 24 lowers again, possibly assisted by the compression spring 31.

[0078] Figure 6 shows a perspective view of a partial section of another lower pivot bearing 1, which, unlike Figures 5a and b, has an axial ramp. The rotating part 23 is shown above the translating part 22 in order to make the elements located beneath the rotating part visible. The translating part has an axial ramp 37 on its surface, which is arranged within the circular guide channels 29 for receiving the guide pins 30. The axial ramp 37 has two axial partial ramps along its circumference, each having a rising region and a region of constant height. Extending from the main body of the rotating part 23, in addition to two guide pins, is an axial counterpart 38 or two axial partial counterparts, which are operatively connected to the axial partial ramps when the rotating part is lowered onto the translating part.The axial counterpart 38 is only partially visible in the perspective view. Particularly advantageously, the translational part 22, with its illustrated elements—axial ramp 37 and guide channels 29—is formed integrally through recesses in the solid material. This achieves particularly high stability. The rotational part, in contrast, is formed in multiple pieces in the illustrated embodiment.

[0079] Figures 7a and 7b show a perspective view of an upper pivot bearing 40 at an opening angle of 0° and 90°, respectively. The upper pivot bearing 40 comprises an upper static part 52 and an upper rotating part 54, as well as a swing door receptacle 58 to which the swing door 3 is fastened. The upper static part 52 has two upper guide channels 57, and the upper rotating part 54 has two upper guide pins 56 on its upper side, which extend into the guide channels 57. In addition to the guide pins, the upper rotating part 54 has a main body to which the swing door is fastened by means of screws. In the case shown, the swing door comprises two glass panes with a spacer arranged between the glass panes or fixing elements arranged between the glass panes, and the screws extend into the spacer or the fixing elements between the glass panes.

[0080] The illustrated upper pivot bearing 40 is distinguished, firstly, by the fact that, unlike the lower pivot bearing 1, it does not have a translational part that performs exclusively a translational movement when opening. In particular, it also has no physical axis of rotation, so that the swing door 3 is guided at its upper side only by the upper guide pins 56. Furthermore, the upper pivot bearing 40 is distinguished by the fact that the swing door is mounted so that it can move in a vertical direction.

[0081] Figure 8 shows a perspective view of a lower pivot bearing 1 with a cover 60. Deviating from the embodiment shown in Figures 3a, 3b, the cover 60 prevents contaminants from entering the pivot bearing and impairing its function.

[0082] Figures 9a and 9b show perspective views of a further embodiment of a swing door arrangement with a vertical projection 71 of the front pane in the closed state and in the open state of the swing door 3. In order to avoid a collision of the vertical projection 71 of the front pane with the pivot bearing or the cabinet body when the swing door is opened, the upper pivot bearing 40 additionally comprises a pivot arm 72 and a translation arm 73, which pivot the swing door 3 away from the cabinet body when the swing door 3 is opened, so that a collision between the vertical projection 71 of the front pane and the upper pivot bearing 40 is avoided for all door positions during opening. In a closed state, the pivot arm 72 and the translation arm 73 run essentially parallel to the door plane.When the swing door 3 is opened, the pivot arm is pivoted out and superimposes the horizontal movement of the swing door in a direction parallel to the plane of the access opening on a further horizontal movement of the swing door in a direction perpendicular to the plane of the access opening of the refrigerated cabinet. The translation arm 73 is rigidly connected to the translation part 22 and rotatably connected to one of the two guide pins 30, and the translation arm is rotatably connected to the static part (21) and rotatably connected to the other guide pin (30), so that when the swing door is opened, the pivot arm swings the swing door away from the cabinet body, thus avoiding a collision between the vertical projection 71 of the front panel and the upper pivot bearing 40 for all door positions during opening.

[0083] Figures 10a and 10b show top views of the further embodiment according to Figures 9a and 9b in the closed state and the open state of the swing door.

[0084] A swing door arrangement with an upper pivot bearing according to Figures 9a, 9b, 10a, and 10b can have a pivot bearing according to Figures 1 to 8 as the lower pivot bearing, which, when the swing door 3 is opened, does not pivot the pivot axis of the swing door away from the cabinet body, but only shifts or raises it laterally in the plane of the access opening. As a result, when the swing door is opened, the upper and lower pivot bearings preferably experience an identical displacement within the plane of the access opening, while only the upper pivot bearing additionally experiences a displacement perpendicular to the access opening of the refrigerated cabinet.

[0085] The swing door assembly according to the invention therefore offers numerous advantages over the prior art. Firstly, the pivot bearings according to the invention enable swing doors in a refrigerated display cabinet to be arranged with very close spacing and minimal gap widths, which leads to a reduction in heat or cold losses and thus to energy savings. The preferred integration of a damping element eliminates the need for separate damping outside the pivot bearing. Safe, gentle closing of the swing doors is ensured.

[0086] Furthermore, the swing door arrangement has a very shallow depth in a direction perpendicular to the access opening. In particular, the upper and / or lower pivot bearings do not extend beyond the swing door in a top view of the refrigerated cabinet or in a horizontal cross-section with the swing door closed. Thus, the pivot bearings preferably do not protrude beyond the exterior of the refrigerated cabinet or toward the cabinet body.

[0087] Finally, in a preferred embodiment, the swing door arrangement also has automatic door closing at small opening angles, as well as a stable open position in a large opening angle range for filling the refrigerated cabinet. The entire functionality is achieved by mechanical elements and without the supply of electrical energy, whereby the swing door arrangement according to the invention contributes to a particularly high energy efficiency of the refrigerated sales cabinet. Finally, the pivot bearings of the revolving door arrangement according to the invention neither extend into the exterior of the refrigerated cabinet nor laterally beyond the width of the swing door, which is advantageous for the arrangement of several swing door arrangements according to the invention next to one another in a

[0088] Refrigerated sales cabinets are essential.

[0089] List of reference symbols

[0090] 1 lower pivot bearing

[0091] 2 cabinet body

[0092] 3 swing door

[0093] 4 axle-side side surface

[0094] 5 side surface facing away from the axis

[0095] 6 Front of the swing door

[0096] 7 Back of the swing door

[0097] 9 viewing windows

[0098] 10 refrigerated sales units

[0099] 11 Top of the swing door

[0100] 12 Bottom of the swing door

[0101] 21 static part

[0102] 22 Translation part

[0103] 23 Rotation part

[0104] 24 axis of rotation

[0105] 25 Shift

[0106] 27 guide channels of the static part

[0107] 29 guide channels of the translation part

[0108] 30 guide pins

[0109] 31 compression spring

[0110] 32 Damping element

[0111] 33 pressure pin

[0112] 36 linear ramp

[0113] 37 axial ramp

[0114] 38 axial counterpart

[0115] 40 upper pivot bearing

[0116] 52 static part of the upper pivot bearing

[0117] 54 Rotating part of the upper pivot bearing

[0118] 56 upper guide pins

[0119] 57 guide channels in the static part of the upper pivot bearing

[0120] 58 Swing door holder

[0121] 60 Cover Pivoting pivot bearing Vertical projection of the front window Pivoting arm Translation arm

Claims

Claims 1. Swing door arrangement for a refrigerated sales cabinet (10) with a cabinet body (2), comprising a swing door (3) and a lower (1) and an upper pivot bearing (40) for rotatably mounting the swing door (3) on the cabinet body (2), wherein the swing door (3) has a front side (6), a back side (7), a top side (11), a bottom side (12), an axial-side side surface (4) and a side surface (5) facing away from the axis and comprises a viewing window (9), wherein the lower (1) and upper pivot bearing (40) are designed such that the swing door (3) is displaced from an initial position in a horizontal direction by a displacement V relative to the cabinet body (2) when it is opened and is displaced back into its initial position when the swing door (3) is closed.

2. Swing door arrangement according to claim 1, wherein the rotational movement of the swing door (3) corresponding to an opening angle a of the swing door and the displacement V of the swing door (3) are mechanically coupled by the lower (1) and upper pivot bearing (40).

3. Swing door arrangement according to one of claims 1 to 2, comprising at least one of the following features: - the displacement V of the swing door (3) increases the distance between the axis-side side surface (4) and an axis-side adjacent swing door or the cabinet body (2) and / or the distance between the rear side of the swing door (7) and the cabinet body (2) when opening, - the upper pivot bearing (40) is arranged at least partially above the top side of the swing door (11) and the lower pivot bearing is arranged at least partially below the bottom side of the swing door (12). - Swing door arrangement according to one of claims 1 to 4, wherein the viewing window (9) comprises at least one glass pane, preferably an insulating multiple glazing which comprises at least two glass panes.

4. Swing door arrangement according to one of claims 1 to 3, wherein the lower pivot bearing (1) comprises a static part (21), a translation part (22) and a rotation part (23), which are arranged substantially one above the other, wherein the static part (21) is designed to be fastened to the cabinet body (2) and remains static when the swing door (3) is opened, wherein the translation part (22) is fastened to the static part (21) and relative to this is horizontally displaceable and undergoes the horizontal displacement when the swing door (3) is opened, and wherein the rotating part (23) is fastened to the swing door (3) and undergoes the horizontal displacement and the rotational movement when the swing door (3) is opened.

5. Swing door arrangement according to claim 4, wherein the horizontal displacement takes place in a direction parallel to a closing plane of the swing door (3), and the translation part (22) on the static part (21) is preferably displaceable exclusively in this direction.

6. Swing door arrangement according to claim 4 or 5, wherein the lower pivot bearing (1) further comprises a rotation axis (24) which enables rotation of the rotation part (23) relative to the translation part (22), and which is preferably rotatably mounted in an opening of the translation part (22) and is fixedly or rotatably connected to the rotation part (23).

7. Swing door arrangement according to one of claims 4 to 6, wherein the static part (21) has two guide channels (27) on its upper side, wherein the translation part (22) also has two guide channels (29) which extend through the translation part (22), and wherein the rotation part (23) has two guide pins (30) on its underside which extend through the guide channels of the translation part (29) into the guide channels of the static part (27).

8. Swing door arrangement according to claim 7, wherein in a horizontal cross-sectional view the guide channels of the translation part (29) have the shape of circular sections, which are preferably arranged point-symmetrically around the axis of rotation (24), and wherein the shape of the guide channels in the static part (27) deviates from a circular section and is designed such that the translation part (22) is displaced in a horizontal direction with increasing opening angle of the swing door (3).

9. Swing door arrangement according to one of claims 4 to 8, wherein the lower (1) and / or upper pivot bearing (40) comprises an integrated damping element (32), which is preferably a linear damping element and which dampens the horizontal movement of the translation part (23) of the swing door (3), wherein the damping element (32) is preferably arranged between the translation part (22) and the static part (21).

10. Swing door arrangement according to one of claims 1 to 9, wherein the lower (1) or upper pivot bearing (40) is designed such that the swing door (3) is raised by a height h in a vertical operating state when opened against the force of gravity.

11. Swing door arrangement according to one of claims 6 to 10, wherein the rotation axis (24) is arranged vertically displaceably in the translation part (22), wherein the static part (21) has a linear ramp (36) on its upper side, which is arranged such that the lower end of the rotation axis (24) slides over the linear ramp (36) when the swing door (3) is opened and is lifted by the linear ramp (36). Or wherein the translation part (22) has an axial ramp (37) on its upper side and the rotation part (23) has a counterpart (29) on its underside, which is arranged such that the axial counterpart (29) slides over the axial ramp (37) when the swing door (3) is opened and the rotation part (23) is lifted by the axial ramp (37).

12. Swing door arrangement according to one of claims 1 to 11, wherein the lower (1) or upper pivot bearing (40) is designed such that the sliding door (3) is mounted so as to be movable in a vertical direction.

13. Swing door arrangement according to one of claims 1 to 12, wherein the lower pivot bearing (40) has a very small installation depth of less than 4 cm in a direction perpendicular to the access opening of the refrigerated sales cabinet (10) when the swing door is closed, preferably less than 3.0 cm and more preferably less than 2 cm.

14. Swing door arrangement according to one of claims 1 to 13, wherein the swing door (3) has on its upper side a front panel with a vertical projection, wherein the upper pivot bearing (40) is arranged substantially behind the vertical projection (71) of the front panel when the swing door (3) is closed from a frontal view of the access opening of the refrigeration unit.

15. Swing door assembly according to one of claims 14, wherein the upper pivot bearing (40) further comprises a pivot arm (72) and a translation arm (73), wherein the pivot arm (72) and the translation arm (73) extend substantially parallel to the door plane in a closed state, wherein the translation arm is rigidly connected to the translation part (22) and rotatably connected to one of the two guide pins (30), wherein the pivot arm is rotatably connected to the static part (21) and rotatably connected to the other guide pin (30), so that when the swing door is opened, the swing arm swings the swing door away from the cabinet body, so that a collision between the vertical projection (71) of the front panel and the upper pivot bearing (40) is avoided for all door positions when opening.

16. Refrigerated sales cabinet comprising at least one swing door arrangement according to one of claims 1 to 15.

Images