A workstation for use with a storage and retrieval system, a storage and retrieval system and a related method

Abstract

The invention concerns a workstation (10) for use with a storage and retrieval system (1) for handling storage containers (106) stored in a first storage volume (104) and a second storage volume (104') having different temperature environments, wherein the workstation comprises a first access port (11) configured to allow an operator (4) to retrieve storage containers (106) from the first storage volume (104) via an opening (13) in a thermal barrier and a second access port (12) configured to allow the operator (4) to retrieve storage containers (106) from the second storage volume (104') The invention also concerns a storage and retrieval system (1) and a method of retrieving storage containers (106) from a storage and retrieval system (1).

Description

TECHNICAL FIELD

[0001] The present invention relates to a workstation for use with a storage and retrieval system for handling storage containers stored in different temperature and / or gaseous environments, a storage and retrieval system and a method a method of retrieving storage containers (106) from a storage and retrieval system. BACKGROUND AND PRIOR ART

[0002] Fig. 1 discloses a prior art automated storage and retrieval system 1 with a framework structure 100 and Figs. 2, 3 and 4 disclose three different prior art container handling devices 200,300,400 suitable for operating on such a system 1.

[0003] The framework structure 100 comprises upright members 102 and a storage volume comprising storage columns 105 arranged in rows between the upright members 102. In these storage columns 105 storage containers 106, also known as containers, are stacked one on top of one another to form stacks 107. The members 102 may typically be made of metal, e.g. extruded aluminum profiles.

[0004] The framework structure 100 of the automated storage and retrieval system 1 comprises a rail system 108 arranged across the top of framework structure 100, on which rail system 108 a plurality of container handling vehicles 200,300,400 maybe operated to raise storage containers 106 from, and lower storage containers 106 into, the storage columns 105, and also to transport the storage containers 106 above the storage columns 105. The rail system 108 comprises a first set of parallel rails no arranged to guide movement of the container handling vehicles 200,300,400 in a first direction X across the top of the frame structure 100, and a second set of parallel rails 111 arranged perpendicular to the first set of rails no to guide movement of the container handling vehicles 200,300,400 in a second direction Y which is perpendicular to the first direction X. Containers 106 stored in the columns 105 are accessed by the container handling vehicles 200,300,400 through access openings 112 in the rail system 108. The container handling vehicles 200,300,400 can move laterally above the storage columns 105, i.e. in a plane which is parallel to the horizontal X-Y plane.

[0005] The upright members 102 of the framework structure 100 may be used to guide the containers 106 during raising of the containers 106 out from and lowering of the containers 106 into the columns 105. The stacks 107 of containers 106 are typically self-supporting.

[0006] Each prior art container handling device 200,300,400 comprises a handling device body / vehicle body 201,301,401 and first and second sets of wheels 202a,202b,302a,302b,402a,402b which enable the lateral movement of the container handling devices 200,300,400 in the X direction and in the Y direction, respectively. In Figs. 2, 3 and 4 two wheels in each set are fully visible. The first set of wheels 202a,302a,402a is arranged to engage with two adjacent rails of the first set no of rails, and the second set of wheels 202b,302b,402b is arranged to engage with two adjacent rails of the second set 111 of rails. At least one of the sets of wheels 202a, 202b, 302a,302b,402a,402b can be lifted and lowered, so that the first set of wheels 202a,302a,402a and / or the second set of wheels 202b,302b,402b can be engaged with the respective set of rails no, 111 at any one time.

[0007] Each prior art container handling device 200,300,400 also comprises a lifting device 303,403 for vertical transportation of containers 106, e.g. raising a container 106 from, and lowering a container 106 into, a storage column 105. The lifting device 303,403 comprises one or more gripping / engaging devices 404 which are adapted to engage a container 106, and which gripping / engaging devices 404 can be lowered from the vehicle 200,300,400 so that the position of the gripping / engaging devices 404 with respect to the vehicle 200,300,400 can be adjusted in a third direction Z which is orthogonal the first direction X and the second direction Y. The gripping device 404 of the container handling device / vehicle 400 in form of a plurality of claws is shown in Fig. 4. The lifting device of the container handling device 200 is located within the vehicle body 201 and is thus not shown.

[0008] Conventionally, and also for the purpose of this application, Z=i identifies the uppermost layer available for containers below the rails 110,111, i.e. the layer immediately below the rail system 108, Z=2 the second layer below the rail system 108, Z=3 the third layer etc. In the exemplary prior art disclosed in Fig. 1, Z=8 identifies the lowermost, bottom layer of containers. Similarly, X=i...n and Y=i...n identifies the position of each storage column 105 in the horizontal plane. Consequently, as an example, and using the Cartesian coordinate system X, Y, Z indicated in Fig. 1, the containers identified as 106’ in Fig. 1 can be said to occupy storage position X=iy, Y=i, Z=6. The container handling devices 200,300,400 can be said to travel in layer Z=o, and each storage column 105 can be identified by its X and Y coordinates. Thus, the containers shown in Fig. 1 extending above the rail system 108 are also said to be arranged in layer Z=o.

[0009] The storage volume 104 of the framework structure 100 has often been referred to as a storage grid, where the possible storage positions within this grid are referred to as storage cells. Each storage column may be identified by a position in an X- and T-direction, while each storage cell may be identified by a container number in the X-, Y- and Z-direction.

[0010] Each prior art container handling device 200,300,400 comprises a storage compartment or space for receiving and stowing a container 106 when transporting the container 106 across the rail system 108. The storage space may comprise a cavity arranged internally within the vehicle body 201,301,401 as present in Figs. 2 and 4 and as described in e.g. WO2O15 / 193278A1 and W02019 / 206487A1, the contents of which are incorporated herein by reference.

[0011] Fig. 3 shows an alternative configuration of a container handling device / vehicle 300 with a cantilever construction. Such a vehicle is described in detail in e.g. NO317366, the contents of which are also incorporated herein by reference.

[0012] The central cavity type vehicle 200 shown in Fig. 2 may have a footprint that covers an area with dimensions in the X and Y directions which is generally equal to the lateral extent of a storage column 105, e.g. as is described in WO2O15 / 193278A1, the contents of which are incorporated herein by reference. The term ‘lateral’ used herein may mean ‘horizontal’.

[0013] Alternatively, the cavity container handling devices / vehicle 400 may have a footprint which is larger than the lateral area defined by a storage column 105 as shown in Figs. 1 and 4, e.g. as is disclosed in W02014 / 090684A1 or W02019 / 206487A1.

[0014] The rail system 108 typically comprises rails with grooves in which the wheels of the vehicles run. Alternatively, the rails may comprise upwardly protruding elements, where the wheels of the vehicles comprise flanges to prevent derailing. These grooves and upwardly protruding elements are collectively known as tracks. Each rail may comprise one track, or each rail 110,111 may comprise two parallel tracks. In other rail systems 108, each rail in one direction (e.g. an X direction) may comprise one track and each rail in the other, perpendicular direction (e.g. a Y direction) may comprise two tracks. Each rail 110,111 may also comprise two track members that are fastened together, each track member providing one of a pair of tracks provided by each rail.

[0015] W02018 / 146304A1, the contents of which are incorporated herein by reference, illustrates a typical configuration of rail system 108 comprising rails and parallel tracks in both X and Y directions.

[0016] In the framework structure 100, a majority of the columns are storage columns 105, i.e. columns 105 where containers 106 are stored in stacks 107. However, some columns may have other purposes. In Fig. 1, columns 119 and 120 are such special-purpose columns used by the container handling devices 200,300,400 to drop off and / or pick up containers 106 so that they can be transported to an access station (not shown) where the containers 106 can be accessed from outside of the framework structure 100 or transferred out of or into the framework structure 100. Within the art, such a location is normally referred to as a ‘port’ and the column in which the port is located may be referred to as a ‘port column’ 119,120. The transportation to the access station maybe in any direction, that is horizontal, tilted and / or vertical. For example, the containers 106 maybe placed in a random or dedicated column 105 within the framework structure 100, then picked up by any container handling device and transported to a port column 119,120 for further transportation to an access station. The transportation from the port to the access station may require movement along various different directions, by means such as delivery vehicles, trolleys or other transportation lines. Note that the term ‘tilted’ means transportation of containers 106 having a general transportation orientation somewhere between horizontal and vertical.

[0017] In Fig. 1, the first port column 119 may for example be a drop-off port column where the container handling devices 200,300,400 can drop off containers 106 to be transported to an access or a transfer station, and the second port column 120 maybe a dedicated pick-up port column where the container handling devices 200,300,400 can pick up containers 106 that have been transported from an access or a transfer station.

[0018] The access station may typically be a picking or a stocking station where product items are removed from or positioned into the containers 106. In a picking or a stocking station, the containers 106 are normally not removed from the automated storage and retrieval system 1, but are returned into the framework structure 100 again once accessed. A port can also be used for transferring containers to another storage facility (e.g. to another framework structure or to another automated storage and retrieval system), to a transport vehicle (e.g. a train or a lorry), or to a production facility.

[0019] A conveyor system comprising conveyors is normally employed to transport the containers between the port columns 119,120 and the access station.

[0020] If the port columns 119,120 and the access station are located at different levels, the conveyor system may comprise a lift device with a vertical component for transporting the containers 106 vertically between the port column 119,120 and the access station.

[0021] The conveyor system may be arranged to transfer containers 106 between different framework structures, e.g. as is described in W02014 / 075937A1, the contents of which are incorporated herein by reference.

[0022] When a container 106 stored in one of the storage columns 105 disclosed in Fig. 1 is to be accessed, one of the container handling devices 200,300,400 is instructed to retrieve the target container 106 from its position and transport it to the drop-off port column 119. This operation involves moving the container handling device 200,300,400 to a location above the storage column 105 in which the target container 106 is positioned, retrieving the container 106 from the storage column 105 using the container handling device’s 200,300,400 lifting device, and transporting the container 106 to the drop-off port column 119. If the target container 106 is located deep within a stack 107, i.e. with one or a plurality of other containers 106 positioned above the target container 106, the operation also involves temporarily moving the abovepositioned containers prior to lifting the target container 106 from the storage column 105. This step, which is sometimes referred to as “digging” within the art, may be performed with the same container handling device that is subsequently used for transporting the target container to the drop-off port column 119, or with one or a plurality of other cooperating container handling devices. Alternatively, or in addition, the automated storage and retrieval system 1 may have container handling devices 200,300,400 specifically dedicated to the task of temporarily removing containers 106 from a storage column 105. Once the target container 106 has been removed from the storage column 105, the temporarily removed containers 106 can be repositioned into the original storage column 105. However, the removed containers 106 may alternatively be relocated to other storage columns 105.

[0023] When a container 106 is to be stored in one of the columns 105, one of the container handling devices 200,300,400 is instructed to pick up the container 106 from the pick-up port column 120 and transport it to a location above the storage column 105 where it is to be stored. After any containers 106 positioned at or above the target position within the stack 107 have been removed, the container handling device 200,300,400 positions the container 106 at the desired position. The removed containers 106 may then be lowered back into the storage column 105, or relocated to other storage columns 105.

[0024] For monitoring and controlling the automated storage and retrieval system 1, e.g. monitoring and controlling the location of respective containers 106 within the framework structure 100, the content of each container 106; and the movement of the container handling devices 200,300,400 so that a desired container 106 can be delivered to the desired location at the desired time without the container handling devices 200,300,400 colliding with each other, the automated storage and retrieval system 1 comprises a control system 600 which typically is computerized and which typically comprises a database for keeping track of the containers 106.

[0025] Automated storage and retrieval systems as described above are typically constructed to be operated in areas at ambient temperatures, e.g. about 20°C. However, for some type of products optimal storage temperature maybe different. For example, it maybe desirable to store food at fridge temperature, typically between 1-4°C, or at freezer temperature, typically below -18°C or below -20°C.

[0026] Furthermore, there may be situations to surround an automated storage and retrieval system with an atmosphere different from the ambient atmosphere, for example to reduce the risk of fire ignition by reducing the oxygen concentration in the surrounding atmosphere.

[0027] Automatic storage and retrieval systems having different temperature zones, and where the temperature can be controlled, are known. For example, WO 2019 / 001816 Ai describes an automated storage and retrieval system having different temperature zones where storage containers are transported between a chilled section and an ambient section via an elevator. In the ambient section, the storage containers may be handled at a workstation by a human operators. The workstation is configured such that a storage container is inserted in one side of the workstation while another bin is received from the opposite side of the workstation.

[0028] The prior art system suffers at least the disadvantage that the workstation must be placed on top of the system, thereby increasing the time required to deliver / retrieve goods to / from an end user.

[0029] Another example of an automatic storage and retrieval systems having different temperature zones are described in WO 2021 / 175872 Ai where the system comprises an ambient grid area and a chill grid area. Each grid area comprises a tunnel which houses one or more workstations.

[0030] The prior art system suffers at least the disadvantage that the system does not allow for efficient transfer of storage containers from one temperature zone to a workstation arranged in another temperature zone without facing temperature and / or gaseous related problems.

[0031] It is an aim of the present invention to provide a workstation, a storage and retrieval system and a method for operating such a system that solves or at least mitigates one of the aforementioned problems. SUMMARY OF THE INVENTION

[0032] This summary is provided to introduce in simplified form a selection of concepts that are further described herein. The summary is not intended to identify key or essential features of the invention.

[0033] The present invention is set forth and characterized in the independent claims, while the dependent claims describe other preferred / optional features. Advantageously, a workstation, system and methods are provided in which the container handling vehicles may remain in the same environment during retrieval / delivery of the storage containers.

[0034] In a first aspect, the invention concerns a workstation as defined in any of the appended claims and / or as described with reference to the second aspect described below.

[0035] In a second aspect, the invention concerns a storage and retrieval system for handling storage containers stored in different temperature and / or gaseous environments, hereinafter referred to as the storage system. The storage system may be an automated storage and retrieval system. Such a storage system is described below, in the appended clauses and in the appended claims.

[0036] The storage system comprises a first space at a first temperature and / or a first atmosphere, a second space at a second temperature and / or a second atmosphere different from the first temperature and / or atmosphere, a workstation arranged in the second space for handling of storage containers by a human and / or robotic operator, and a thermal barrier thermally insulating the first space from the second space and / or preventing, or at least reducing, gaseous leakage there between. The barrier may be any structure separating the first and second spaces and may include straight walls and / or ducts / columns. Further, the barrier may comprise common thermal wall insulations such as polystyrene foam, mineral wool and / or polyurethane. The barrier maybe a wall of an enclosure for the first space.

[0037] In case of thermally insulting barrier to prevent, or at least reduce, thermal leakage between the first and second spaces, the first temperature may for example be below 5°C (i.e. refrigeration temperatures) or below -16°C (i.e. freezer temperatures). The second temperature may for example be a temperature above 15°C (i.e. room temperature).

[0038] The barrier may comprise an opening arranged adjacent the workstation, wherein the opening has a size allowing the storage containers to pass through, or, in case of storage containers with different height, the tallest storage container. The opening is preferably closable.

[0039] Moreover, the first space comprises a first horizontal rail system, a first storage volume arranged below the first horizontal rail system to store storage containers in vertical stacks, a first retrieving and delivery volume arranged below the first horizontal rail system for retrieving / delivering storage containers from / to the workstation via a grid opening within the first rail system and a first container handling vehicle configured to lift a storage container and to transport the storage container along the first horizontal rail system.

[0040] Likewise the second space comprises a second horizontal rail system, a second storage volume arranged below the second horizontal rail system to store storage containers in vertical stacks, a second retrieving and delivery volume arranged below the second horizontal rail system for retrieving / delivering storage containers from / to the workstation via grid opening within the second rail system and a second container handling vehicle configured to lift a storage container and to transport the storage container along the second horizontal rail system.

[0041] The first and the second retrieving and delivery volumes may comprise storage columns which are void of storage columns except during transport to / from the workstation.

[0042] The grid openings of these retrieving and delivery volumes are preferably positioned directly above or adjacent the entrance point of the containers into the access ports.

[0043] The workstation comprises a first access port configured to allow the operator to retrieve / deliver storage containers from / to the first storage volume via the opening and a second access port configured to allow the operator to retrieve / deliver storage containers from / to the second storage volume. The term ‘retrieve’ does herein signify allowing the operator to receive and remove the storage containers from the first and second access ports.

[0044] Hence, the storage system allows the operator to remove / insert storage containers from / into the storage volumes within different temperature and / or gaseous environments via a common workstation. If the first and second space have different temperatures, the storage system ensures minimum exposure of temperature changes for the operating container handling vehicles, thus minimum risk of temperature related problems such as condensation of electronics and / or ice formation due to humidity intrusion.

[0045] In one exemplary configuration of the invention, the first access port may comprise a movable closure configured to open and close the first access port towards the first storage volume. Alternatively, or in addition, the second access port may comprise a movable closure configured to open and close the second access port towards the second storage volume.

[0046] In another exemplary configuration of the invention, an inner volume of the workstation may enclose a first transport channel for guiding storage containers between the first space and the first access port. Further, the workstation may enclose a second transport channel for guiding storage containers between the second space and the second access port. Such first and second transport channels may for example be formed as ducts and may comprise one or more thermally insulating materials.

[0047] In another exemplary configuration of the invention, the workstation may comprise a first container transport mechanism for horizontal transport of a storage container between the first retrieving and delivery volume and the first access port. The workstation may also or alternatively comprise a second container transport mechanism for horizontal transport of a storage container between the second retrieving and delivery volume and the second access port.

[0048] At least a part of the first container transport mechanism may be arranged within the opening of the barrier or enclosure wall.

[0049] At least one of the first and second container transport mechanisms may further comprise a container holding device for supporting a storage container and a motorized swivel rotationally connected to the container holding device. The rotational coupling may for example be achieved by an arm extending with a horizontal component between the swivel and the holding device. Preferably, the transport channel(s) comprise(s) at least two or three of such arms, each having a container holding device fixed to their ends.

[0050] The casing of the workstation surrounding inter alia the transport channel(s) may also enclose the opening to avoid or reduce thermal and / or gaseous leakage between the first and second spaces.

[0051] Alternatively, or in addition, barrier separating the first space and the second space may comprise a movable closure configured to open and close the opening. Such movable closure may be replacing or supplementing any movable closure of the first access port.

[0052] As for the workstation casing described above, the movable closures ensure that any thermal and / or gaseous leakage between the first space and the second space is reduced or prevented. Note however that other ways of preventing / reducing such thermal and / or gaseous leakage maybe envisaged. For example, prevention / reduction maybe obtained by placing any blocking objects within the transport channel such as one or more storage containers.

[0053] In another exemplary configuration of the invention, at least a part of the first access port creating a transport path for storage containers from the first space may comprise a thermally insulating material in order to reduce exposure of the atmosphere inside the first space to the atmosphere within the second space. Example of thermally insulating materials are polystyrene foam, mineral wool and / or polyurethane.

[0054] In another exemplary configuration of the invention, the first access port and the second access port may be horizontally spaced from each other with a width that ensures that a storage container at a position within the first access port and a storage container at a position within the second access port are both within an arm’s length of an adult human operator when the operator is standing at a center position between the access ports.

[0055] In another exemplary configuration of the invention, the workstation may comprise a control system with a graphical user interface for registering retrieval / delivery of storage containers from / to the workstation via the first access port and the second access port. Said control system may be arranged between the access ports.

[0056] In another exemplary configuration of the invention, at least some of the vertical stacks of the second storage volume may be supported on an elevated second base being vertically elevated relative to a base on the workstation is supported.

[0057] In another exemplary configuration of the invention, the workstation may be arranged between the first storage volume and the second storage volume relative to a horizontal plane, that is, a plane parallel to the plane of the rail systems.

[0058] In another exemplary configuration of the invention, at least some, for example all, of the vertical stacks of the first storage volume and the workstation are supported on a common base. Further, the vertical stacks of the second storage volume may also be supported on this common base.

[0059] In another exemplary configuration of the invention, the first horizontal rail system and the second horizontal rail system may be vertically aligned.

[0060] In another exemplary configuration of the invention, rails of the first and second horizontal rail systems oriented towards the workstation may be horizontally aligned, thereby allowing the first and the second access port of the workstation to be mutually aligned along a line perpendicular to the two storage volumes.

[0061] In another exemplary configuration of the invention, the workstation may be arranged below the first storage volume of the first space and optionally at least a portion of the second storage volume

[0062] In another exemplary configuration of the invention, the thermal barrier may further comprise a duct configured to guide storage containers by use of the first container handling vehicle between the first storage volume and the workstation, preferably in a vertical direction, and wherein the opening of the barrier is positioned in the duct in vertical alignment with the workstation. The duct may be thermally insulated by use of one or more thermally insulating materials such as the materials mentioned above.

[0063] Said duct may also comprise a second opening having a size and a position allowing the second container handling vehicle operating on the second horizontal rail system to place storage containers into the duct. The duct may also comprise a second movable closure configured to open and close the second opening.

[0064] In another exemplary configuration of the invention, the second space may comprise a plurality of the second storage volumes and a plurality of the workstations. Each of the workstations may be arranged below at least part of each second storage volume. Further, the second storage volumes may be arranged below the first storage volume.

[0065] In this exemplary configuration the barrier may comprise a plurality of the ducts configured to guide storage containers between the first storage volume and the workstations, wherein each of the ducts may comprise one or more thermally insulating materials.

[0066] In a third aspect, the invention concerns method for retrieving storage containers from a storage and retrieval system such as a storage and retrieval system described above and / or as defined in the appended clauses and / or in the appended claims.

[0067] The method may comprise the following steps: - retrieving a storage container from top of a vertical stack within the first storage volume by use of the first container handling vehicle; - transporting the storage container along the first horizontal rail system to a position above the first retrieving and delivery volume; - lowering, preferably vertically, the storage container to a position adjacent the opening and in alignment with the first access port, for example in vertical alignment; - placing the storage container at the first access port via the opening; and - retrieving the storage container from the first access port.

[0068] In an exemplary process of the invention, the method may comprise the following steps: - retrieving a storage container from top of a vertical stack within the second storage volume by use of the second container handling vehicle; - transporting the storage container along the second horizontal rail system to a position above the second retrieving and delivery volume; - lowering, preferably vertically, the storage container, to a position in alignment with the second access port; - placing the storage container at the second access port; and - retrieving the storage container from the second access port.

[0069] In another exemplary process of the invention, the method may, after lowering the storage container in alignment with the first access port, comprise the step of transporting the storage container to a position within the first access port via the opening which is accessible by the operator by use of a first transport mechanism such as a conveyor belt or a rotating container handling device as described above. Such a first transport mechanism may also comprise thermally insulating materials to further lower any thermal leakage between the first and second spaces.

[0070] A similar process may be performed for transporting a storage container to a position within the second access port accessible by the operator by use of a second transport mechanism.

[0071] In another exemplary process of the invention, the operator may, after having lowered the storage container, remove an item such as a tote from within the storage container and place the item onto a cart arranged next to the workstation, or, if a plurality of workstations are present, next to each of the workstations.

[0072] In another exemplary process of the invention, a movable closure of the first access port and / or the thermal barrier is opened prior to retrieving the storage container from the first access port to reduce or prevent thermal and / or gaseous leakage.

[0073] In the specific example of a first and a second space having a chilled environment and a room temperature environment, respectively, the storage containers may be transported down a port column void of stacked storage containers. At the bottom of the chilled space, at level with the workstation, the storage container is transported through the opening and into the workstation situated at room temperature. With this method, the risk of condensation of the electronics within the chilled space is significantly reduced, for example electronics forming part of the container handling vehicle’s lifting device. Moreover, such a risk is further reduced, or even eliminated, by adding a movable closure to the first access port and / or to the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The following drawings depict embodiments of the present invention by way of example only and are appended to facilitate the understanding of the invention.

[0075] Fig. 1 is a perspective view of a prior art automated storage and retrieval system comprising a rail system onto which remotely operated container handling vehicles are operating and a storage volume for storing stacks of containers.

[0076] Fig. 2 is a perspective view of a prior art remotely operating vehicle having a centrally arranged cavity for carrying containers therein.

[0077] Fig. 3 is a perspective view of a prior art remotely operating vehicle having a cantilever for carrying containers underneath.

[0078] Fig. 4 is a perspective view of a prior art remotely operating vehicle having an internally arranged cavity for carrying containers therein, wherein the cavity is offset from its center relative to the A-direction.

[0079] Fig. 5 are perspective side views of an automated storage and retrieval system according to one embodiment of the invention, wherein fig. 5 A shows a large part of the system and fig. 5 B shows the workstation of the system in further detail.

[0080] Fig. 6 is a perspective top view of the automated storage and retrieval system of fig. 5.

[0081] Fig. 7 is a cross-sectional side view of part of an automated storage and retrieval system according to the invention, wherein fig. 7 A shows the workstation arranged between and partly within the first and second frameworks and fig. 7 B shows the workstation in further detail.

[0082] Fig. 8 A and B are perspective side views of an automated storage and retrieval system according to a second embodiment of the invention, wherein fig. 8 A shows the entire system and fig. 8 B shows a more detailed part of the system including the workstation. DETAILED DESCRIPTION OF THE INVENTION

[0083] In overview, a workstation (10) is provided for use with a storage and retrieval system (1) for handling storage containers (106) stored in a first storage volume (104) and a second storage volume (104’) having different temperature environments. The workstation comprises a first access port (11) configured to allow an operator (4) to retrieve storage containers (106) from the first storage volume (104) via an opening (13) in a thermal barrier and a second access port (12) configured to allow the operator (4) to retrieve storage containers (106) from the second storage volume (104’). A storage and retrieval system and a method of retrieving storage containers (106) from a storage and retrieval system (1) are also provided.

[0084] In the following, embodiments of the invention will be discussed in more detail by way of example only and with reference to the appended drawings. It should be understood, however, that the drawings are not intended to limit the invention to the subject-matter depicted in the drawings. Furthermore, even if some of the features are described in relation to the automated storage and retrieval system 1 only, it is apparent that they are valid for the related methods as well, and vice versa.

[0085] In the following, embodiments of the invention will be discussed in more detail by way of example only and with reference to the appended drawings. It should be understood, however, that the drawings are not intended to limit the invention to the subject-matter depicted in the drawings. Furthermore, even if some of the features are described in relation to the automated storage and retrieval system 1 and the container handling and transport vehicle 10 only, it is apparent that they are valid for the related methods as well, and vice versa.

[0086] Figs. 5 and 6 show a first embodiment of an automated storage and retrieval system 1 comprising a first space 2 and a second space 3 divided by a wall 6. The wall 6 has one or more openings 13 with a size allowing storage containers 106 (hereinafter called ‘bins’) to pass through (fig. 7).

[0087] Each of the spaces 2,3 contains a storage volume 104,104’ containing stacks 107 of bins 106, a rail system 108’,108 arranged above the storage volume 104,104’ and a plurality of remotely operated container handling vehicles 300 operating on the rail system 108,108’.

[0088] The rail systems 108,108’ maybe similar or identical to the rail system shown in fig. 1 (see section ‘background and prior art’), i.e. comprising a first set of parallel rails no arranged to guide movement of the container handling vehicles 300 in a first direction X, and a second set of parallel rails 111 arranged perpendicular to the first set of rails no to guide movement of the container handling vehicles 300 in a second direction Y which is perpendicular to the first direction X.

[0089] The framework structures 100,100’ including the rail systems 108,108’ and the storage volumes 104,104’ maybe constructed in a similar or identical manner as the prior art framework structure 100 described above in connection with fig. 1. Hence, each framework structure 100,100’ may comprise, in addition to the rail system 108,108’, a number of upright members 102 forming storage columns 105 and port columns 119,120.

[0090] The container handling vehicles 300 may access the topmost bin 106 of each stack 107 through access openings 112 in the rail systems 108,108’.

[0091] The rails 110,111 are preferably double track rails to enable more efficient / dense traffic on the rail system 108.

[0092] As best seen in fig. 5A, the second space 3 further contains one or more workstations 10 arranged on a floor 20, wherein the workstations 10 are configured to receive and deliver bins 106 from and to the storage volumes 104,104’ respectively.

[0093] The workstation 10 (or each workstation 10 in case of several workstations 10) may comprise a first access port 11 for receiving / delivering bins 106 from / to the first storage volume 104 in the first space 2, a second access port 12 for receiving / delivering bins 106 from / to the second storage volume 104’ in the second space 3 and a control system 15 having a graphical user interface (GUI) for allowing the operator 4 to monitor and control the storage / retrieval of bins 106 from the storage volumes 104,104’. The workstation 10 may further be designed with an ergonometric operator space 16 arranged between the first and second access ports 11,12 into which an operator 4 may conveniently remove / insert bins 106 from / into the respective access ports 11,12 with a minimum need for movements. One possible workstation design may be a square U-design placing the access ports 11,12 in horizontal alignment at the workstation’s sides and the GUI there between.

[0094] In order to receive / deliver bins 106 from / to the first storage volume 104, the first access port 11 is positioned adjacent the opening 13 for allowing bins 106 to be transported there through.

[0095] Fig. 7 shows a workstation 10 arranged between a first and a second storage volume 104,104’, where a first section 10’ is retrieving / delivering bins 106 from the first storage volume 104 and a second section 10” is retrieving / delivering bins 106 from the second storage volume 104’. Each section 10’, 10” comprises a workstation cover 17 surrounding a bin transport mechanism 50 for transporting bins 106 from / to an access port 11,12 to / from a port column 119,119’ in form of a rotational device / carousel 50 such as a prior art carousel described in patent publication WO 2012 / 026824 Ai, the contents of which are incorporated herein by reference.

[0096] Specifically, the carousel 50 may comprise a plurality of bin holding devices 51, for example three bin holding devices, where each of the holding devices 51 is configured to hold a bin 106. The holding device 51 may for example be an open tray. Each holding device 51 may be rotationally fixed to an outer end of an arm 52, wherein the opposite end of each arm is fixed to a common motorized swivel 53. The carousel 50 may further comprise a carousel framework 54 supporting the swivel 53, arms 52 and holding devices 51 at a desired height within the sections 10,10’ of the workstation 10.

[0097] By use of such a carousel 50, a bin 106 may be retrieved from the storage volume 104,104’ by rotating the arms 52 using the motorized swivel 53 such that an empty holding device 51 is positioning into a ‘drop-off’ port column 119,119’. A container handling vehicle 300 may lower the bin 106 onto the holding device 51, and the swivel 53 then rotates the holding device 51 with the bin 106 such that the bin 106 is accessible for the human operator 4 via the access port 11,12.

[0098] Separately, or simultaneously, another holding device 51 situated on another arm 52 of the carousel 50, having a bin 106 containing items to be stores, may be placed in ‘pick-up’ port column 120 for being picked up by a container handling vehicle 300.

[0099] To allow retrieval / delivery of bins 106 into the first storage volume 104, the first section 10’ is in the solution shown in Fig. 7 inserted into an opening 13 of the wall 6, wherein the opening 13 has a height above the floor 20 and a width corresponding to the height and width of the workstation 17, thereby ensuring the above mentioned prevention / reduction of thermal and / or gaseous leakage between the first and second spaces 2,3 during operation.

[0100] In general the bin transport mechanism 50 may be any mechanism allowing displacement of bins 106 between the storage volumes 104,104’ and the access ports 11,12 of the respective sections 10’,10”, for example a conveyor belt and / or a linear actuator.

[0101] Further the prevention / reduction of thermal and / or gaseous leakage between the first space 2 and the second space 3 during such a bin transfer may be achieved by arranging a movable closure in front of the opening 13 that may be closed and opened, for example a hinged door or a vertically slidable plate.

[0102] The desired prevention of leakage may also be achieved by installing a closing / opening mechanism for the first access port 11, for example a lid operable by the operator 4 from the operator space 16 and / or a lid automatically controlled by the control system 15.

[0103] Fig. 5 also shows a chart 40 arranged adjacent the workstation 10 for storing and transporting a plurality of delivery bins 45 to facilitate removal and delivery of items stored within the storage bins 106 from and to the workstation 10, respectively.

[0104] To store items into the storage volume 104 of the first space 2 by use of a first embodiment system depicted in Fig. 5, the following steps may be performed: a. bringing one or more delivery bins 45 with items to be stored to the workstation on a wheeled chart 40, b. placing an empty bin 106 into the first access port 11 of the workstation’s first section 10’ and onto the bin transport mechanism 50, c. picking up the desired items from the delivery bins 45 and placing them into the bin 106, d. confirming via the GUI of the control system 15 that transport of the bin 106 from the first access port 10 to the pick-up column 120 is ready, e. allocating a storage column 105 for the bin 106 within the storage space 104, f. if applicable, moving a movable closure away from the opening 13, g. moving the bin 106 from the first access port 11 into the pick-up column 120 forming part of a retrieving and delivery volume by use of the bin transport mechanism 50, wherein the transport goes through the opening 13 of the wall 6, h. if applicable, placing the movable closure back to its initial position, i. moving a container handling vehicle 300 on the rail system 108 such that the vehicle’s lifting device 303 (see fig. 3) is positioned directly above the pick-up column 120, j. raising the bin 106 above the rail system 108 by use of the lifting device 303, k. moving the container handling vehicle 300 with the bin 106 along the rail system 108 such that the bin 106 is positioned directly above the allocated storage column 105 and 1. lowering the bin 106 via the grid opening 112 into the storage column 105 to place the bin 106 onto the stack 107 or, if the storage column 105 is empty, onto the floor 16.

[0105] Steps a-d are typically performed by a human operator 10 while steps e-l are typically controlled by a control system 15,109, for example by the control system controlling the container handling vehicles 109. If a carousel 50 shown in Fig. 7 is used as a bin transport mechanism 50, step g involves rotating the holding devices 51 by use of the motorized swivel 53. Steps / and h maybe omitted.

[0106] For steps d-h a dedicated workstation control system 15 maybe used. In such a case, the workstation 15 may send a command to the system control system 109 which again instructs the container handling vehicles 300 to perform steps i-l.

[0107] Similarly, to retrieve desired items from the storage volume 104 the following steps may be performed: a. picking up the desired bin 106 from a stack 107 or floor 20 within a storage column 105 by use of a lifting device 303 of a container handling vehicle 300, b. moving the container handling vehicle 300 to a position in which the bin 106 is directly above a drop-off column 119, c. lowering the bin 106 into the drop-off column 119 and onto the bin transport mechanism 50, wherein the relevant part of the bin transport mechanism 50 is in horizontal alignment with the drop-off column 119 and in vertical alignment with the opening 13, d. if applicable, moving a movable closure away from the opening 13, e. moving the bin 106 into the first access port 11 via the opening 13 of the wall 6 by use of the bin transport mechanism 50, f. picking up the desired items from the bin 106 via the first access port 11 and placing them into a delivery bin 45, g. if applicable, placing the movable closure back to its initial position and h. bringing the delivery bin 45 with the desired items away from the workstation on the wheeled chart 41.

[0108] A common column may be used both as a pick-up column 120 and a drop-off column 119 during delivery and retrieval.

[0109] With the possible exception of maneuvering the movable closure (i.e. steps / and h for delivery and steps d and g for retrieval), delivery / retrieval to / from the second storage volume 104’ may be performed using the same process steps as explained above.

[0110] As shown in both Fig. 5 and Fig. 6, a second framework 100’ of the second space 3 maybe divided into a main part supported on the floor 20 and an elevated part supported on an elevated platform 32. The space between the elevated platform 32 and the floor 20 may for example be used for transport of machinery inside the storage facility such as pick-up trucks and / or for transporting delivery bins 45 on wheeled carts 40 and / or for arranging additional workstations 10 to further speed up the delivery / retrieval of bins 106.

[0111] Fig. 8 shows a second embodiment of the automated storage and retrieval system 1. As for the first embodiment, the system 1 comprises a first space 2 and a second space 3 for storage of bins 106, wherein the first and second spaces 2,3 may contain different environments / atmospheres such as different temperatures and / or different gases.

[0112] The first space 2 contains a first framework 100 arranged on an elevated platform 30. The first framework 100 comprises a first storage volume 104 with stacks 107 of bins 106 and a first rail system 108 arranged on top of the first storage volume 104. The first space 2 also contains a plurality of container handling vehicles 300 operating on the first rail system 108.

[0113] The second space 3 of the second embodiment storage system 1 includes a plurality of second frameworks 100’ arranged below the elevated platform 30, wherein each of the second frameworks 100’ comprises a second storage volume 104’ and a second rail system 108’ arranged on top of the second storage volume 104’. The second storage volume 104’ contains stacked bins 106.

[0114] Moreover, a workstation 10 and a cart 40 as described above for the first embodiment maybe arranged adjacent each of the second frameworks 100’.

[0115] As for the first embodiment, one or more of the second frameworks 100’ maybe divided into a main part supported on the floor 20 and an elevated part supported on an elevated platform 32, wherein the workstations 10 are arranged into the spaces formed by the elevated parts. One or more container handling vehicles 300 may operate on each of the second rail systems 108’.

[0116] Both the first framework 100 and the second frameworks 100’ may further comprise upright members 102 with storage columns 105 or port columns 119,120 arranged in rows between the upright members 102, where each storage column 105 contains stacks 107 of bins 106 and each of the port columns 119,120 are void of bins 106.

[0117] Instead of a single vertical wall 6 shown for the first embodiment, the separation of the first and second spaces 2,3 in different thermal and / or gaseous environments is achieved by a more complex and fully enclosing structure 6 surrounding the first framework 100 and the vehicles 300 operating on the first framework 100.

[0118] The enclosing structure 6 includes surrounding vertical walls extending from the elevated platform 30 to a ceiling of the warehouse or a dedicated roof (not shown) and ducts 6’ extending down from the elevated platform 30 to the floor 20 on which the workstations 10 are arranged.

[0119] The duct 6’ displays an opening 13 through which the bins 106 may pass through, and the first section 10’ of the workstation 10 is positioned such that the bins 106 maybe moved between a position within the duct 106’ (which typically is a continuation of one or more port columns 119,120 of the first framework structure 100) and the first access port 11 using a bin transport mechanism 50 such as the above described carousel.

[0120] To store items into the storage volume 104 of the first space 2 by use of a second embodiment system depicted in Fig. 8, the following steps may be performed: a. bringing one or more delivery bins 45 with items to be stored to one of the workstations on a wheeled chart 40, b. placing an empty bin 106 into the first access port 11 of the workstation’s first section 10’ and onto the bin transport mechanism 50, c. picking up the desired items from the delivery bins 45 and placing them into the bin 106, d. confirming via the GUI of the control system 15 that transport of the bin 106 from the first access port 11 / first section 10’ to the duct 6’ is ready, e. allocating a storage column 105 for the bin 106 within the storage space 104, f. if applicable, moving a movable closure away from the opening 13 in the duct 6’, g. moving the bin 106 from the first access port 11 into the duct 6’ by use of the bin transport mechanism 50, wherein the transport goes through the opening 13 of the duct 6’, h. if applicable, placing the movable closure back to its initial position, i. moving a container handling vehicle 300 on the rail system 108 such that the vehicle’s lifting device 303 (see fig. 3) is positioned directly above the first storage volume’s pick-up column 120 and directly above the duct 6’ arranged along the second storage volume 104’, j. raising the bin 106 along the duct 6’ and the pick-up column 120 by use of the lifting device 303 until the bin 106 is above the rail system 108, k. moving the container handling vehicle 300 with the bin 106 along the rail system 108 such that the bin 106 is positioned directly above the allocated storage column 105 and 1. lowering the bin 106 via the grid opening 112 into the storage column 105 to place the bin 106 onto the stack 107 or, if the storage column 105 is empty, onto the floor 16.

[0121] The duct 6’ and the pick-up column 120 are in this embodiment arranged directly above each other to allow vertical bin transfer between the rail system 108 and the opening 13.

[0122] Similarly, to retrieve desired items from the first storage volume 104 of the second embodiment system, the following steps may be performed: a. picking up the desired bin 106 from a stack 107 or floor 20 within a storage column 105 by use of a lifting device 303 of a container handling vehicle 300, b. moving the container handling vehicle 300 to a position in which the bin 106 is directly above a drop-off column 119 and directly above a duct 6’ aligned with the drop-off column 119, c. lowering the bin 106 onto the bin transport mechanism 50 via the dropoff column 119 and the duct 6’, wherein the relevant part of the bin transport mechanism 50 is in horizontal alignment with the duct 6’ and in vertical alignment with the opening 13, d. if applicable, moving a movable closure away from the opening 13, e. moving the bin 106 into the first access port 11 via the opening 13 of the wall 6 by use of the bin transport mechanism 50, f. picking up the desired items from the bin 106 via the first access port 11 and placing them into a delivery bin 45, g. if applicable, placing the movable closure back to its initial position and h. bringing the delivery bin 45 with the desired items away from the workstation on the wheeled chart 41.

[0123] In the preceding description, various aspects of the system and the method according to the invention have been described with reference to the illustrative embodiment. For purposes of explanation, specific numbers and configurations were set forth in order to provide a thorough understanding of the system and its workings. However, this description is not intended to be construed in a limiting sense. Various modifications and variations of the illustrative embodiments, as well as other embodiments of the system and method, which are apparent to persons skilled in the art to which the disclosed subject matter pertains, are deemed to lie within the scope of the present invention. LIST OF REFERENCE NUMBERS Automated storage and retrieval system First space Second space Operator Thermal barrier / wall Thermal barrier / duct Workstation First section Second section First access port Second access port Opening Control system for workstation Operator space Workstation cover Base / floor Elevated first base / elevated platform Support / pillars for second base Elevated platform for second storage volume / elevated second base Delivery container / tote Cart Container transport mechanism, carousel, rotational device Bin holding device / tray Arm Swivel Carousel framework Framework structure / first framework structure Second framework structure Upright members of storage volume Horizontal members of storage volume First storage volume Second storage volume Storage column Container / storage container Particular position of a container / target container Stack First horizontal rail system Second horizontal rail system Control system Parallel rails in first direction (X) / X-rails Parallel rail in second direction (Y) / Y-rails Grid opening First retrieving and delivery volume / drop-off column Second retrieving and delivery volume / drop-off column Second port column / pick-up column Second retrieving and delivery volume / pick-up column Prior art container handling device / remotely operated vehicle with central cavity Handling device body / Vehicle body Drive means in first direction (X) Drive means in second direction (Y) Prior art container handling vehicle / remotely operated vehicle with cantilever / container handling vehicle / faulty robot Handling device body / Vehicle body Drive means / wheel arrangement, first direction (X) Drive means / wheel arrangement, second direction (Y) Lifting device Gripper element Guiding pin Prior art container handling device / remotely operated vehicle with offset cavity Handling device body / Vehicle body Drive means / wheel arrangement, first direction (X) Drive means / wheel arrangement, second direction (Y) Lifting device Gripper element Guiding pin First direction Second direction Third direction CLAUSES Aspects and features of the invention are set forth in the following numbered clauses. i. An automated storage and retrieval system (i) for handling storage containers (106) stored in different temperature environments, the automated storage and retrieval system (1) comprising: a first space (2) at a first temperature; a second space (3) at a second temperature different from the first temperature; a workstation (10) for handling of storage containers (106) by an operator (4); and an enclosure or barrier (6) thermally insulating the first space (2) from the second space (3), wherein the enclosure or barrier (6) comprises an opening (13) arranged adjacent the workstation (10), having a size allowing the storage containers (106) to pass through, wherein the first space (2) comprises: - a first horizontal rail system (108); - a first storage volume (104) arranged below the first horizontal rail system (108) to store storage containers (106) in vertical stacks (107); - a first retrieving and delivery volume (119,120) arranged below the first horizontal rail system (108) for retrieving / delivering storage containers (106) from / to the workstation (10); and - a first container handling vehicle (200,300,400) configured to lift a storage container (106) and to transport the storage container (106) along the first horizontal rail system (108), wherein the second space (3) comprises: - a second horizontal rail system (108’); - a second storage volume (104’) arranged below the second horizontal rail system (108) to store storage containers (106) in vertical stacks (107); - a second retrieving and delivery volume (119’,120’) arranged below the second horizontal rail system (108) for retrieving / delivering storage containers (106) from / to the workstation (10); and - a second container handling vehicle (200,300,400) configured to lift a storage container (106) and to transport the storage container (106) along the second horizontal rail system (108’), wherein the workstation (10) comprises a first access port (11) configured to allow the operator (4) to retrieve storage containers (106) from the first storage volume (104) via the opening (13) and a second access port (12) configured to allow the operator (4) to retrieve storage containers (106) from the second storage volume (104’). 2. The automated storage and retrieval system (i) of clause 1, wherein the first access port (n) comprises a movable closure configured to open and close the first access port (n) towards the first storage volume (104). 3. The automated storage and retrieval system (1) of clause 1 or clause 2, wherein an inner volume of the workstation (10) encloses a first transport channel for guiding storage containers (106) between the first space (2) and the first access port (11). 4. The automated storage and retrieval system (1) of clause 3, wherein a thermally insulating material is enclosing at least part of the first transport channel. 5. The automated storage and retrieval system (1) of any preceding clause, wherein the workstation (10) comprises a first container transport mechanism (50) for horizontal transport of a storage container (106) between the first retrieving and delivery volume (119,120) and the first access port (11), wherein at least a part of the first container transport mechanism (50) is arranged within the opening (13). 6. The automated storage and retrieval system (1) of clause 5, wherein the first container transport mechanism (50) comprises a container holding device (51) for supporting a storage container (106) and a motorized swivel (53) rotationally connected to the container holding device (51). 7. The automated storage and retrieval system (1) of any preceding clause, wherein the first access port (11) and the second access port (12) are horizontally spaced from each other with a width that ensures that a storage container (106) within the first access port (11) and a storage container (106) within the second access port (12) are both within an arm’s length of an adult human operator (4) when the operator (4) is standing at a center position between the access ports (11,12). 8. The automated storage and retrieval system (1) of any preceding clause, wherein the workstation (10) comprises a control system (15) for registering retrieval of storage containers (106) from the workstation (10) via the first access port (11) and the second access port (12), wherein the control system (15) is arranged between the access ports (11,12). 9. The automated storage and retrieval system (1) of any preceding clause, wherein at least some of the vertical stacks (107) of the second storage volume (104’) are supported on an elevated second base (32) being vertically elevated relative to a base (20) on which the workstation (10) is supported. 10. The automated storage and retrieval system (1) of any preceding clause, wherein the workstation (10) is arranged between the first storage volume (104) and the second storage volume (104’) relative to a horizontal plane. 11. The automated storage and retrieval system (1) of any preceding clause, wherein at least some of the vertical stacks (107) of the first storage volume (104) and the workstation (10) are supported on a common base (20). 12. The automated storage and retrieval system (1) of any preceding clause, wherein the first horizontal rail system (108) and the second horizontal rail system (108’) are vertically aligned. 13. The automated storage and retrieval system (1) of any preceding clause, wherein rails (110) of the first and second horizontal rail systems (108,108’) oriented towards the workstation (10) are horizontally aligned. 14. The automated storage and retrieval system (1) of any preceding clause, wherein the workstation (10) is arranged below the first storage volume (104) of the first space (2). 15. The automated storage and retrieval system (1) of clause 14, wherein the workstation (10) is arranged below at least a portion of the second storage volume (104’) of the second space (3). 16. The automated storage and retrieval system (1) of clause 14 or 15, wherein the enclosure or barrier (6) comprises a duct (6’) configured to guide storage containers (106) between the first storage volume (104) and the workstation (10) and wherein the opening (13) of the enclosure or barrier (6) is positioned in the duct (6’) in vertical alignment with the workstation (10). 17 The automated storage and retrieval system (1) of clause 16, wherein the second space (3) comprises: a plurality of the second storage volumes (104’); and a plurality of the workstations (10), wherein each of the workstations (10) are arranged below at least part of the second storage volume (104’), wherein the second storage volumes (104’) are arranged below the first storage volume (104) and wherein the enclosure or barrier (6) comprises a plurality of the ducts (6’) configured to guide storage containers (106) between the first storage volume (104) and the workstations (10). 18. A method for retrieving storage containers (106) from an automated storage and retrieval system (1) of any of clauses 1-17, wherein the method comprises the following steps: - retrieving a storage container (106) from top of a vertical stack (107) within the first storage volume (104) by use of the first container handling vehicle (200,300,400); - transporting the storage container (106) along the first horizontal rail system (108) to a position above the first retrieving and delivery volume (119,120); - lowering the storage container (106) to a position adjacent the opening (13) and in alignment with the first access port (11); - placing the storage container (106) at the first access port (11) via the opening (13); and - retrieving the storage container (106) from the first access port (11). 19. The method of clause 18, wherein the method comprises the following steps: - retrieving a storage container (106) from top of a vertical stack (107) within the second storage volume (104’) by use of the second container handling vehicle (200,300,400); - transporting the storage container (106) along the second horizontal rail system (108’) to a position above the second retrieving and delivery volume (119’,120’); - lowering the storage container (106) to a position in alignment with the second access port (12); - placing the storage container (106) at the second access port (12); and - retrieving the storage container (106) from the second access port (12). 20. The method of clause 18 or 19, wherein the method, after lowering the storage container (106), comprises the step of: - transporting the storage container (106) to a position at the first access port (11) via the opening (13) being accessible by the operator by use of a first transport mechanism (50). 21. The method of any of clause 18 to 20, wherein the operator (4) performs, after having lowered the storage container (106), the following steps: - removing an item from within the storage container (106); and - placing the item onto a cart (40) arranged next to the workstation (10). 22. The method of any of clause 18 to 21, wherein the first access port (11) comprises a movable closure configured to open and close the first access port (11) towards the first storage volume (104) and wherein the method comprises the step of - opening the movable closure prior to retrieving the storage container (106) via the first access port (11).

Claims

1. A workstation (10) for use with a storage and retrieval system (1) for handling storage containers (106) stored in a first storage volume (104) and a second storage volume (104’) having different temperature environments, wherein the workstation comprises a first access port (11) configured to allow an operator (4) to retrieve storage containers (106) from the first storage volume (104) via an opening (13) in a thermal barrier and a second access port (12) configured to allow the operator (4) to retrieve storage containers (106) from the second storage volume (104’).

2. The workstation (10) of claim 1, wherein the storage and retrieval system is an automated storage and retrieval system.

3. The workstation (10) of claim 1 or 2, wherein the system comprises a first space (2) at a first temperature and a second space (3) at a second temperature different from the first temperature, wherein the first space comprises the first storage volume (104) and the second space comprises the second storage volume (104’) and wherein the system comprises the thermal barrier (6) which thermally insulates the first space from the second space, wherein the barrier (6) comprises the opening (13), wherein the opening (13) is arranged adjacent the workstation (10) for allowing the storage containers (106) to pass through.

4. The workstation (10) of any preceding claim, wherein the first space (2) comprises:- a first horizontal rail system (108);- the first storage volume (104) arranged below the first horizontal rail system (108) to store storage containers (106) in vertical stacks (107);- a first retrieving and delivery volume (119,120) arranged below the first horizontal rail system (108) for retrieving / delivering storage containers (106) from / to the workstation (10); and- a first container handling vehicle (200,300,400) configured to lift a storage container (106) and to transport the storage container (106) along the first horizontal rail system (108), wherein the second space (3) comprises:- a second horizontal rail system (108);- the second storage volume (104’) arranged below the second horizontal rail system (108) to store storage containers (106) in vertical stacks (107);- a second retrieving and delivery volume (119’,120’) arranged below the second horizontal rail system (108’) for retrieving / delivering storage containers (106) from / to the workstation (10); and- a second container handling vehicle (200,300,400) configured to lift a storage container (106) and to transport the storage container (106) along the second horizontal rail system (108’).

5. The workstation (10) of any preceding claim, wherein the first access port (11) comprises a movable closure configured to open and close the first access port (11) towards the first storage volume (104).

6. The workstation (10) of any preceding claim, wherein an inner volume of the workstation (10) encloses a first transport channel for guiding storage containers (106) between the first space (2) and the first access port (11).

7. The workstation (1) of claim 6, wherein a thermally insulating material encloses at least part of the first transport channel.

8. The workstation (10) of any preceding claim when dependent on claim 4, wherein the workstation (10) comprises a first container transport mechanism (50) for horizontal transport of a storage container (106) between the first retrieving and delivery volume (119,120) and the first access port (11), wherein at least a part of the first container transport mechanism (50) is arranged within the opening (13).

9. The workstation (10) of claim 8, wherein the first container transport mechanism (50) comprises a container holding device (51) for supporting a storage container (106) and a motorized swivel (53) rotationally connected to the container holding device (51).

10. The workstation (10) of any preceding claim, wherein the first access port (11) and the second access port (12) are horizontally spaced from each other with a width that ensures that a storage container (106) within the first access port (11) and a storage container (106) within the second access port (12) are both within an arm’s length of an adult human operator (4) when the operator (4) is standing at a center position between the access ports (11,12).

11. The workstation (10) of any preceding claim, wherein the workstation (10) comprises a control system (15) for registering retrieval of storage containers (106) from the workstation (10) via the first access port (11) and the secondaccess port (12), wherein the control system (15) is arranged between the access ports (11,12).

12. A storage and retrieval system (1) for handling storage containers (106) stored in different temperature environments, the automated storage and retrieval system (1) comprising: a first space (2) at a first temperature; a second space (3) at a second temperature different from the first temperature; a thermal barrier (6) thermally insulating the first space (2) from the second space (3), wherein the enclosure or barrier (6) comprises an opening (13) arranged adjacent the workstation (10), having a size allowing the storage containers (106) to pass through; and the workstation (10) of any preceding claim for handling of storage containers (106) by an operator (4).

13. The storage and retrieval system (1) of claim 12, wherein the storage and retrieval system is an automated storage and retrieval system14. The storage and retrieval system (1) of claim 12 or 13, wherein the system comprises a first space (2) at a first temperature and a second space (3) at a second temperature different from the first temperature, wherein the first space comprises the first storage volume (104) and the second space (3) comprises the second storage volume (104’) and wherein the system comprises the thermal barrier (6) which thermally insulates the first space from the second space, wherein the barrier (6) comprises the opening (13), wherein the opening (13) is arranged adjacent the workstation (10) for allowing the storage containers (106) to pass through.

15. The storage and retrieval system (1) of any of claims 12 to 14, wherein the first space (2) comprises:- a first horizontal rail system (108);- the first storage volume (104) arranged below the first horizontal rail system (108) to store storage containers (106) in vertical stacks (107);- a first retrieving and delivery volume (119,120) arranged below the first horizontal rail system (108) for retrieving / delivering storage containers (106) from / to the workstation (10); and- a first container handling vehicle (200,300,400) configured to lift a storage container (106) and to transport the storage container (106) along the first horizontal rail system (108), wherein the second space (2) comprises:- a second horizontal rail system (108);- the second storage volume (104’) arranged below the second horizontal rail system (108) to store storage containers (106) in vertical stacks (107);- a second retrieving and delivery volume (119’,120’) arranged below the second horizontal rail system (108) for retrieving / delivering storage containers (106) from / to the workstation (10); and- a second container handling vehicle (200,300,400) configured to lift a storage container (106) and to transport the storage container (106) along the second horizontal rail system (108’).

16. The storage and retrieval system (1) of any of claims 12 to 15, wherein at least some of the vertical stacks (107) of the second storage volume (104’) are supported on an elevated second base (32) being vertically elevated relative to a base (20) on which the workstation (10) is supported.

17. The storage and retrieval system (1) of any of claims 12 to 16, wherein the workstation (10) is arranged between the first storage volume (104) and the second storage volume (104’) relative to a horizontal plane.

18. The storage and retrieval system (1) of any of claims 12 to 17, wherein at least some of the vertical stacks (107) of the first storage volume (104) and the workstation (10) are supported on a common base (20).

19. The storage and retrieval system (1) of any of claims 12 to 18, wherein the first horizontal rail system (108) and the second horizontal rail system (108’) are vertically aligned.

20. The storage and retrieval system (1) of any of claims 12 to 19, wherein rails (no) of the first and second horizontal rail systems (108,108’) oriented towards the workstation (10) are horizontally aligned.

21. The storage and retrieval system (1) of any of claims 12 to 20, wherein the workstation (10) is arranged below the first storage volume (104) of the first space (2).

22. The storage and retrieval system (1) of claim 21, wherein the workstation (10) is arranged below at least a portion of the second storage volume (104’) of the second space (3).

23. The storage and retrieval system (1) of claim 21 or 22, wherein the thermal barrier (6) comprises a duct (6’) configured to guide storage containers (106) between the first storage volume (104) and the workstation (10) and wherein theopening (13) of the enclosure or barrier (6) is positioned in the duct (6’) in vertical alignment with the workstation (10).

24. The storage and retrieval system (1) of claim 23, wherein the second space (3) comprises:a plurality of the second storage volumes (104’); anda plurality of the workstations (10),wherein each of the workstations (10) are arranged below at least part of the second storage volume (104’),wherein the second storage volumes (104’) are arranged below the first storage volume (104) andwherein the enclosure or barrier (6) comprises a plurality of the ducts (6’) configured to guide storage containers (106) between the first storage volume (104) and the workstations (10).

25. A method for retrieving storage containers (106) from a storage and retrieval system (1) such as a storage and retrieval system of any of claims 12 to 24, wherein the method comprises:- retrieving a storage container (106) from top of a vertical stack (107) within the first storage volume (104) by use of the first container handling vehicle (200,300,400);- transporting the storage container (106) along the first horizontal rail system (108) to a position above the first retrieving and delivery volume (119,120);- lowering the storage container (106) to a position adjacent the opening (13) and in alignment with the first access port (11);- placing the storage container (106) at the first access port (11) via the opening (13); and- retrieving the storage container (106) from the first access port (11).

26. The method of claim 25, wherein the method comprises:- retrieving a storage container (106) from top of a vertical stack (107) within the second storage volume (104’) by use of the second container handling vehicle (200,300,400);- transporting the storage container (106) along the second horizontal rail system (108’) to a position above the second retrieving and delivery volume (119’,120’);- lowering the storage container (106) to a position in alignment with the second access port (12);- placing the storage container (106) at the second access port (12); and - retrieving the storage container (106) from the second access port (12).

27. The method of claim 25 or 26, wherein the method, after lowering the storage container (106), comprises:- transporting the storage container (106) to a position at the first access port (11) via the opening (13) being accessible by the operator by use of a first transport mechanism (50).

28. The method of any of claims 25 to 27, wherein the operator (4) performs, after having lowered the storage container (106), the following steps: - removing an item from within the storage container (106); and- placing the item onto a cart (40) arranged next to the workstation (10).

29. The method of any of claims 25 to 28, wherein the first access port (11) comprises a movable closure configured to open and close the first access port (11) towards the first storage volume (104) and wherein the method comprises: - opening the movable closure prior to retrieving the storage container (106) via the first access port (11).

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