EP3473951A1 - Vorrichtung und verfahren zum verriegeln eines lagertanks über einer waage für den transport - Google Patents

Vorrichtung und verfahren zum verriegeln eines lagertanks über einer waage für den transport Download PDF

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Publication number
EP3473951A1
EP3473951A1 EP18201746.7A EP18201746A EP3473951A1 EP 3473951 A1 EP3473951 A1 EP 3473951A1 EP 18201746 A EP18201746 A EP 18201746A EP 3473951 A1 EP3473951 A1 EP 3473951A1
Authority
EP
European Patent Office
Prior art keywords
storage tank
lever
scale system
exerts
aperture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18201746.7A
Other languages
English (en)
French (fr)
Other versions
EP3473951B1 (de
Inventor
Craig Francis Govekar
Rahhali Sanhaji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Snap On Inc
Original Assignee
Snap On Inc
Snap On Tools Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from IT102017000119259A external-priority patent/IT201700119259A1/it
Application filed by Snap On Inc, Snap On Tools Corp filed Critical Snap On Inc
Publication of EP3473951A1 publication Critical patent/EP3473951A1/de
Application granted granted Critical
Publication of EP3473951B1 publication Critical patent/EP3473951B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/004—Details for charging or discharging refrigerants; Service stations therefor with several tanks to collect or charge a cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/005—Service stations therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/007—Details for charging or discharging refrigerants; Service stations therefor characterised by the weighing of refrigerant or oil

Definitions

  • refrigerant recovery and delivery units can be used. To meet certain recovery standards, or to add refrigerant, such refrigerant recovery and delivery units can measure an amount of refrigerant that has been removed from or added to a vehicle.
  • Refrigerant recovery and delivery units can be equipped with a storage tank for storing refrigerant.
  • the storage tank and any contents thereof may be weighed to determine the mass of refrigerant within the storage tank using a scale system that measures the weight of the storage tank and its contents.
  • the storage tanks and scale systems can be prone to vibration or movement during transportation of the refrigerant recovery and delivery unit from one location to another.
  • the storage tank and scale system can be jostled or experience jolts. These conditions can lead to damage inflicted on the scale system. For example, under these conditions, the storage tank can impact a load cell within the scale system, thereby damaging the load cell.
  • the present disclosure provides an apparatus for lifting a storage tank of a refrigerant recovery and delivery unit above and out of contact with a scale system, to prevent damage to the scale system from vibration, movement, jostling, or jolting, that may occur during transportation of the refrigerant recovery and delivery unit from one location to another.
  • a hand-operated lever can be moved from a first, unlocked position where the storage tank is in contact with the scale system, to a second, locked position where an end of the lever exerts a force on a bottom of the storage tank to move the storage tank into the second, locked position where the storage tank is positioned above, and out of contact with, the scale system.
  • Two storage tanks may be positioned within the refrigerant recovery and delivery unit with a first lever extending through a first side wall and a second lever extending through a second side wall.
  • the first lever is useful for lifting a first storage tank into a raised, locked position and for lowering the first storage tank into a lowered, unlocked position where the storage tank and contents therein may be weighed.
  • the second lever is useful for lifting a second storage tank into a raised, locked position and for lowering the second storage tank into a lowered, unlocked position where the storage tank and contents therein may be weighed.
  • the present disclosure further provides for a method of lifting a storage tank of a refrigerant recovery and delivery unit above and out of contact with a scale system, to prevent damage to the scale system from vibration, movement, jostling, or jolting, that may occur during transportation of the refrigerant recovery and delivery unit from one location to another.
  • the method includes moving an end of a lever to move the lever from a first position where the storage tank is in contact with the scale system, to a second raised position where an end of the lever exerts a force on a bottom of the storage tank to move the storage tank into a raised locked position where the storage tank is positioned above, and out of contact with, the scale system.
  • the method provides that the scale system is not subject to damage during transportation of the refrigerant recovery and delivery unit from one location to another when the storage tank has been moved to the second raised position in which the storage tank is out of contact with the scale system.
  • an apparatus having a first storage tank, a frame positioned at least partially beneath the first storage tank, a first lever having a first end and a second end, and the first lever is pivotally mounted to the frame; and a first scale system positioned beneath the first storage tank, wherein in a first position, the first storage tank exerts a force against the first scale system, and wherein in a second position, the second end of the lever exerts a force on a bottom surface of the first storage tank such that the first storage tank is positioned above, and out of contact with, the first scale system, when the first storage tank is in the second position.
  • the apparatus may further include having the first end of the first lever extending through a first side wall and operable by a user to move the first lever and first storage tank from the first position to the second position, and may also further include having the first side wall include a boundary of an aperture having a notch and the first end of the first lever is positioned underneath the notch when the first lever and first storage tank are in the second position.
  • the apparatus may also further include a second storage tank, a second lever having a first end and a second end, and the second lever is pivotally mounted to the frame, and a second scale system positioned beneath the second storage tank, wherein in a third position, the second storage tank exerts a force against the second scale system, and wherein in a fourth position, the second end of the second lever exerts a force on a bottom surface of the second storage tank such that the second storage tank is positioned above, and out of contact with, the second scale system, when the second storage tank is in the fourth position.
  • an example embodiment takes the form of a method.
  • the method includes steps of (i) providing a first storage tank, and a frame positioned at least partially beneath the first storage tank, and a first lever having a first end and a second end, and the first lever is pivotally mounted to the frame; and a first scale system positioned beneath the first storage tank; wherein in a first position, the first storage tank exerts a force against the first scale system, and in a second position, the second end of the first lever exerts a force on a bottom surface of the first storage tank such that the first storage tank is positioned above, and out of contact with, the first scale system, when the first storage tank is in the second position, and (ii) moving the first storage tank from the first position wherein the first storage tank exerts a force on the first scale system to the second position where the first storage tank is positioned above, and out of contact with, the first scale system.
  • the method may further provide that the step of moving the first storage tank from the first position to the second position comprises moving the first end of the first lever such that the second end of the first lever exerts the force against the bottom surface of the first storage tank; and further includes the step of positioning the first end of the first lever underneath a notch in a boundary of an aperture in a first side wall to lock the first end of the first lever and first storage tank into the locked position.
  • the method may also further include the steps of (iii) providing a second storage tank, and a second lever having a first end and a second end, and the second lever pivotally mounted to the frame, and a second scale system positioned beneath the second storage tank, wherein in a third position, the second storage tank exerts a force against the second scale system, and in a fourth position, the second end of the second lever exerts a force on a bottom surface of the second storage tank such that the second storage tank is positioned above, and out of contact with, the second scale system, when the second storage tank is in the fourth position; and (iv) moving the second storage tank from the third position wherein the second storage tank exerts a force on the second scale system to the fourth position where the second storage tank is positioned above, and out of contact with, the second scale system.
  • the articles “a,” “an,” and “the” are used to introduce elements and/or functions of the example embodiments.
  • the intent of using those articles is that there is one or more of the introduced elements and/or functions.
  • the intent of using the term “and/or” within a list of at least two elements or functions and the intent of using the terms "at least one of' and “one or more of' immediately preceding a list of at least two elements or functions is to cover each embodiment including a listed element or function independently and each embodiment comprising a combination of the listed elements or functions.
  • an embodiment described as comprising "A, B, and/or C,” or “at least one of A, B, and C,” or “one or more of A, B, and C” is intended to cover each of the following possible embodiments: (i) an embodiment comprising A, but not B and C, (ii) an embodiment comprising B, but not A and C, (iii) an embodiment comprising C, but not A and B, (iv) an embodiment comprising A and B, but not C, (v) an embodiment comprising A and C, but not B, (v) an embodiment comprising B and C, but not A, and (vi) an embodiment comprising A, B, and C.
  • the embodiments can comprise one A or multiple A.
  • the embodiments can comprise one B or multiple B.
  • the embodiments comprising element or function C can comprise one C or multiple C.
  • the use of ordinal numbers such as “first,” “second,” “third” and so on is to distinguish respective elements rather than to denote a particular order of those elements unless the context of using those terms explicitly indicates otherwise.
  • Figure 1 is a partially cut-away perspective view showing an apparatus 50, which in some embodiments may be a refrigerant recovery and delivery unit.
  • storage tank 160 is positioned within the refrigerant recovery and delivery unit.
  • the apparatus 50 can be configured to weigh a storage tank 160 and contents thereof, using a scale system 180, which may be a load cell, although other types of scales may also be used.
  • the storage tank 160 and scale system 180 can be prone to vibration or movement during transportation of the refrigerant recovery and delivery unit from one location to another.
  • the storage tank and scale system can be jostled or experience jolts. These conditions can lead to damage inflicted on the scale system. For example, under these conditions, the storage tank can impact a load cell within the scale system, thereby damaging the load cell.
  • FIG. 2 is a perspective view of refrigerant recovery and delivery unit 100, according to an example embodiment.
  • Refrigerant recovery and delivery unit 100 includes a storage tank 160 and a lever 150 extending through side wall 190.
  • Figure 3A is a close up view of a first end 154 of lever 150 extending through side wall 190.
  • lever 150 includes a first end 154 having an aperture 152, and is shown with lever 150 in a first, unlocked position.
  • the storage tank positioned within the refrigerant recovery and delivery unit is positioned over a load cell and exerts a force on the load cell, such that the contents of the storage tank may be weighed.
  • the lever 150 in this embodiment includes a spring positioned about a pivot bolt that biases the lever 150 to the left.
  • a user grasps the first end 154 of lever 150, and may place a thumb within aperture 152 to better grip the first end 154 of lever 150.
  • the first end 154 of lever 150 is then moved downwardly along sloped wall 196 of aperture 194 in side wall 190. Once the first end 154 of lever 150 extends beneath the sloped wall 196, the first end 154 of lever 150 is moved underneath notch 192 that forms part of the boundary of aperture 194 in side wall 190.
  • a spring on a pivot bolt biases the first end 154 of lever 150 toward the left beneath notch 192 of aperture 194 of side wall 190.
  • the first end 154 of lever 150 is in the second, locked position, and a second end of the lever 150 has been raised to exert a force on a bottom surface of the storage tank to raise the storage tank above, and out of contact with, the load cell, to prevent damage that may be caused to the load cell during transportation of the refrigerant recovery and delivery unit.
  • Figure 3B is a close up view of first end 154 of lever 150 extending through side wall 190, with lever 150 shown in a second, locked position.
  • the first end 154 of lever 150 has been moved downwardly along sloped wall 196 of aperture 194 of side wall 190 and positioned beneath notch 192 of aperture 194.
  • a spring on a pivot bolt biases the first end 154 of lever 150 to the left so that it is maintained in the second, locked position.
  • the lever 150 remains in the second, locked position until a user exerts a force greater than the spring force applied to the lever 150 to move the lever towards the right along notch 192, until the lever extends to the right of the notch 192 where the lever moves upwardly along sloped wall 196 of aperture 194 and into the first, unlocked position.
  • a second lever may extend through a second side wall of the refrigerant recovery and delivery unit that may be used to move a second storage tank into a fourth, locked position where the second storage tank is raised above, and out of contact with, a second load cell positioned within the refrigerant recovery and delivery unit.
  • the second lever is configured to move the second storage tank from a third position (in which the second storage tank exerts a force against the second load cell) to the fourth position and/or to move from the fourth position to the third position.
  • Figure 4A is a close up view of a first end 154' of lever 150' extending through side wall 190' that may be positioned on an opposite side (or adjacent side) of side wall 190 shown in Figures 3A and 3B .
  • the lever 150' may be positioned in side wall 190, along with lever 150, such that two levers extend from a single side wall of the refrigerant recovery and delivery unit (see example embodiment in Figure 11 ), which are used to lift two storage tanks 160 and 160' into the second and fourth, locked positons, respectively, with the storage tanks 160 and 160' positioned above, and out of contact with, respective load cells positioned within the refrigerant recovery and delivery unit.
  • the first and second positions pertaining to the first storage tank and the first lever are comparable to the third and fourth positions pertaining to the second storage tank and the second lever.
  • an amount of travel the first storage tank moves from the first position to the second positon or vice versa is equal to an amount of travel the second storage tank moves from the third position to the fourth positon or vice versa.
  • an amount of travel the first storage tank moves from the first position to the second positon or vice versa is not equal to an amount of travel the second storage tank moves from the third position to the fourth positon or vice versa.
  • the lever 150 can be moved rightward from the second, locked position shown in Figure 3B until the first end 154 extends beyond the notch 192 and then moves upwardly along the sloped wall 196 until the lever 150 is in the first, unlocked position as shown in Figure 3A .
  • lever 150' includes a first end 154' having an aperture 152', and is shown with lever 150' in a first, unlocked position.
  • the storage tank positioned within the refrigerant recovery and delivery unit is positioned over a load cell and exerts a force on the load cell, such that the contents of the storage tank may be weighed.
  • the lever 150' in this embodiment includes a spring positioned about a pivot bolt that biases the lever 150' to the right.
  • a user grasps the first end 154' of lever 150', and may place a thumb within aperture 152' to better grip the first end 154' of lever 150'.
  • the first end 154' of lever 150' is then moved downwardly along sloped wall 196' of aperture 194' in side wall 190'. Once the first end 154' of lever 150' extends beneath the sloped wall 196', the first end 154' of lever 150 is moved underneath notch 192' of aperture 194' in side wall 190'.
  • a spring on a pivot bolt biases the first end 154' of lever 150' toward the right beneath notch 192' of aperture 194' of side wall 190'.
  • the first end 154' of lever 150' is in the second, locked position, and a second end of the lever 150' has been raised to exert a force on a bottom surface of a second storage tank to raise the second storage tank above, and out of contact with, a second load cell, to prevent damage that may be caused to the second load cell during transportation of the refrigerant recovery and delivery unit.
  • Figure 4B is a close up view of first end 154' of lever 150' extending through side wall 190', with lever 150' shown in a fourth, locked position.
  • the first end 154' of lever 150' has been moved downwardly along sloped wall 196' of aperture 194' of side wall 190' and positioned beneath notch 192' of aperture 194'.
  • a spring on a pivot bolt biases the first end 154' of lever 150' to the right so that it is maintained in the fourth, locked position.
  • a single lever may be used to raise two separate storage tanks (see example embodiment in Figure 12 ).
  • a single lever may have a first end that is manipulated by a user to move the lever from a first, unlocked position to a second, locked position, where the second end of the lever branches off from the lever to extend beneath a first storage tank and a second storage tank.
  • the second end of the lever exerts a force on bottom surfaces of both the first and second storage tanks to raise them into position above, and out of contact with, respective load cells positioned within a refrigerant recovery and delivery unit.
  • the lever 150' can be moved leftward from the second, locked position shown in Figure 4B until the first end 154' extends beyond the notch 192' and then moves upwardly along the sloped wall 196' until the lever 150' is in the first, unlocked position as shown in Figure 4A .
  • FIG 5 is an exploded view of the internal components of refrigerant recovery and delivery unit 100 shown in Figures 2-4B .
  • the internal components include storage tank 160 and storage tank 160'.
  • the storage tanks 160 and 160' can be configured to store refrigerant, such as refrigerant used in air-conditioning systems in vehicles ( e . g ., industry standard refrigerants like dichlorodifluoromethane - R-12, chlorodifluoromethane - R-22, 1,1,1,2-tetrafluoroethane - R-134a, etc.).
  • the refrigerant stored within the storage tanks 160 and 160' can be a liquid, a gas, or a combination of the two, in various embodiments.
  • the storage tanks 160 and 160' have a 30 lb. (13.6 kg) rated refrigerant capacity.
  • the storage tanks 160 and 160' when empty, can have a weight between 15-17 lb. (6.8-7.7 kg)
  • the storage tanks 160 and 160' have a 50 lb. (22.7 kg) rated refrigerant capacity and an empty weight between 28-32 lb. (12.7-14.5 kg).
  • Various other storage tank sizes and capacities are possible (e.g., 24 lb., 10.9 kg, rated refrigerant capacity storage tank).
  • the storage tanks 160 and 160' may store gas and/or liquid other than a refrigerant, and storage tanks 160 and 160' may be of different weights and sizes.
  • the refrigerant within the storage tanks 160 and 160' can be stored during a refrigerant recovery process, a refrigerant recycling process, or a refrigerant reintroduction process, in various embodiments. Further, the refrigerant recovery process, recycling process, or reintroduction process can include multiple phases or stages ( e . g ., one phase that withdraws refrigerant from, or adds refrigerant to, a vehicle using a compressor and a second phase that withdraws refrigerant from a vehicle using a compressor aided by a vacuum pump). In addition, the storage tanks 160 and 160' may also store refrigerant when not in use with respect to a vehicle.
  • a tank plate 200' is positioned beneath the bottom of the storage tank 160' and may be secured to the bottom of the storage tank via clips, set screws, strap(s), etc.
  • a base plate 210' is positioned beneath the tank plate 200'.
  • the storage tank 160', tank plate 200', and base plate 210' are positioned above frame 170 which includes a frame reinforcement 172.
  • a scale system 180' in the form of a load cell is positioned within the frame 170, and scale spacers are also shown.
  • a tank plate, base plate, and scale system may be positioned underneath storage tank 160.
  • a lever 150' is shown that is pivotally mounted to frame reinforcement 172, the lever 150' having a first end 154' that extends through aperture 194' of side wall 190'.
  • the lever 150' includes first end 154' and a second end having upwardly extending flanges 156' and 158' that extend through slots 172a and 172b of frame reinforcement 172, as well as through slots 170a and 17b of frame 170, and slots 210a' and 210b' in base plate 210'.
  • the upwardly extending flanges 156' and 158' on lever 150' engage a bottom of tank plate 200' when the first end 154' of lever 150' is moved downwardly, to lift storage tank 160' above, and out of contact with, scale system 180' when the storage tank 160' is moved to the locked position.
  • Pivot bolts 157' and 159' are used to pivotally mount lever 150' with frame enforcement 172. A single bolt could also be used.
  • a spring 155' is positioned about bolt 157' to bias lever 150' towards the right into a locked position.
  • a lever constructed the same as lever 150' may extend through side wall 190 and be used to raise storage tank 160 into a locked position, above and out of contact with, a load cell positioned beneath storage tank 160.
  • Upwardly extending flanges on the lever extending through side wall 190 may extend through slots 172c and 172d of frame reinforcement 172, as well as through corresponding slots in frame 170 and a base plate positioned beneath storage tank 160.
  • FIG. 6 is a perspective underneath view of refrigerant recovery and delivery unit 100 shown in Figures 2-5 with portions removed to show the internal components.
  • the storage tank 160 is shown in the locked position with upwardly extending flanges 156 and 158 of lever 150 exerting an upward force (transmitted through a tank plate not shown) on a bottom surface of storage tank 160 to position storage tank 160 above, and out of contact with, scale system 180.
  • the first end of lever 150 is shown extending through aperture 194 in side wall 190, and lever 150 pivotally mounted to frame reinforcement 172 of frame 170 with pivot bolts 157 and 159.
  • Spring 155 positioned about pivot bolt 157 biases the first end of the lever towards the right in the locked position.
  • First end 154' of lever 150' is shown extending through aperture 194' of sidewall 190', and lever 150' and upwardly extending flange 156' are shown with the lever 150' in an unlocked position with storage tank 160' exerting a force on scale system 180'.
  • scale systems 180 and 180' may be a load cell, while in other embodiments the scale system could be a different type of scale such as a spring scale.
  • the load cell is configured to measure force acting on the load cell. This force may be output as an electrical signal, in some embodiments.
  • the electrical signal could be sent to a processing device or a control system, for example.
  • the force could be output to a display for viewing by a user of the refrigerant recovery and delivery unit 100.
  • the force measured by the load cells could correspond to the weight applied to the respective load cells by the storage tanks 160 and 160' and contents therein. After accounting for the weight of an empty storage tank, the force measured by the load cells can correspond to the amount (weight) of refrigerant in the storage tanks 160 and 160', respectively.
  • load cells may be used for scale systems 180 and 180'.
  • Some example load cells include strain gauge load cells (e.g., shear beam load cells, double-ended shear beam load cells, or compression load cells), hydraulic load cells, and pneumatic load cells.
  • the load cell can be a transducer in multiple embodiments, whereby a voltage or a current output signal indicates a value of a corresponding force acting on the load cell.
  • FIG 7 is another underneath perspective view of refrigerant recovery and delivery unit 100 shown in Figure 6 .
  • the storage tank 160' is shown in the unlocked position with upwardly extending flanges 156' and 158' of lever 150' not exerting an upward force on a bottom surface of storage tank 160' (or tank plate 200'), such that storage tank 160' is positioned over and exerts a force on scale system 180'.
  • the first end 154' with aperture 152' positioned therein of lever 150' is shown extending through aperture 194' in side wall 190' and not positioned beneath notch 192' of aperture 194' in this unlocked position.
  • Lever 150' is pivotally mounted to frame reinforcement 172 of frame 170 with pivot bolts 157' and 159', and although not in the locked position, spring 155' positioned about pivot bolt 157' biases lever 150' towards the right of aperture 194' of side wall 190'.
  • First end 154 having aperture 152 of lever 150 is shown extending through aperture 194 of sidewall 190, and lever 150 is shown positioned in the locked position with storage tank 160 positioned above, and out of contact with, a load cell positioned beneath frame reinforcement 172.
  • Figure 8A is a close up perspective view of refrigerant recovery and delivery unit 100 shown in Figure 7 , with lever 150' and storage tank 160' shown in an unlocked position.
  • the storage tank 160' is shown in the unlocked position with upwardly extending flanges 156' and 158' of lever 150' that extend through slots 172c and 172d of frame reinforcement 172 of frame 170 not exerting an upward force on a bottom surface of storage tank 160' or tank plate 200', such that storage tank 160' exerts a force on scale system 180'.
  • the first end 154' having aperture 152' of lever 150' is shown extending through aperture 194' in side wall 190' positioned above notch 192' and sloped wall 196', and lever 150' is pivotally mounted to frame reinforcement 172 of frame 170 with pivot bolts 157' and 159'.
  • Spring 155' positioned about pivot bolt 157' biases the first end 154' of the lever 150' towards the right side of aperture 194' of side wall 190'.
  • FIG 8B is another close up perspective view of refrigerant recovery and delivery unit 100 shown in Figure 8A , with lever 150' and storage tank 160' shown in an unlocked position.
  • the storage tank 160' is shown in the unlocked position with upwardly extending flanges 156' and 158' of lever 150' that extend through slots 172c and 172d of frame reinforcement 172 of frame 170 not exerting an upward force on a bottom surface of storage tank 160' or tank plate 200', such that storage tank 160' exerts a force on scale system 180'.
  • the first end 154' having aperture 152' of lever 150' is shown extending through aperture 194' in side wall 190' positioned above notch 192' and sloped wall 196', and lever 150' is pivotally mounted to frame reinforcement 172 of frame 170 with pivot bolts 157' and 159'.
  • Spring 155' positioned about pivot bolt 157' biases the first end 154' of the lever 150' towards the right side of aperture 194' of side wall 190'.
  • FIG 9 is a partial cross-sectional view of refrigerant recovery and delivery unit 100 shown in Figures 2-8B .
  • storage tank 160' is shown positioned above tank plate 200' and base plate 210', as well as frame 170 and scale system 180'.
  • a first end 154' of lever 150' is shown extending through aperture 194' of side wall 190'.
  • Storage tank 160' and lever 150' are shown in a locked, raised position with upwardly extending flange 158' of lever 150 exerting an upward force on tank plate 200' and in turn a bottom surface of storage tank 160' such that storage tank 160' is raised into position above, and out of contact with, base plate 210' and scale system 180'.
  • storage tank 160 is shown positioned above tank plate 200 and base plate 210, as well as frame 170 and scale system 180.
  • a first end 154 of lever 150 is shown extending through aperture 194 of side wall 190.
  • Storage tank 160 and lever 150 are shown in an unlocked position with upwardly extending flange 156 not exerting a force against tank plate 200 or a bottom surface of storage tank 160, such that storage tank exerts a force against scale system 180.
  • Figure 10A is a perspective view of refrigerant recovery and delivery unit 100.
  • Storage tank 160 is shown positioned above tank plate 210, base plate 200, and frame 170.
  • a first end 154 having aperture 152 of lever 150 is shown extending through aperture 194 of side wall 190.
  • Lever 150 and storage tank 160 are shown in a first, unlocked position with storage tank exerting a force against a scale system (not shown) positioned beneath frame 170.
  • Figure 10B is a perspective view of refrigerant recovery and delivery unit 100 after lever 150 and storage tank 160 have been moved into a second, locked position with storage tank 160 raised upwardly into a position where storage tank 160 is positioned above, and out of contact with, the load cell positioned beneath frame 170.
  • the first end 154 of lever 150 extends through aperture 194 in side wall 190.
  • a user grasps first end 154 of lever 150 and may place a thumb or finger within aperture 152 on first end 154 of lever 150 to provide a better grip.
  • First end 154 of lever 150 is moved downwardly along sloped wall 196 of aperture 194 in side wall 190 and the first end 154 is then moved to the left into position underneath notch 192 in side wall 190 to lock the first end 154 of lever 150 into a locked position.
  • the storage tank 160 and tank plate 210 is raised above, and out of contact with, base plate 200, frame 170, and a scale system (not shown).
  • a spring is used to bias the first end 154 of lever 150 into the locked position beneath notch 192 of side wall 190.
  • tank plate 200 is not required, and the lever 150 could exert a force directly on the bottom of storage tank 160, or a reinforced bottom of storage tank 160, rather than exert a force on the bottom of storage tank 160 through tank plate 200.
  • the lever 150 may include additional upwardly extending flanges, may include only a single flange, or may include no upwardly extending flanges at all.
  • Figure 13 shows a lever extension 270 that may be used in connection with lever 150 to provide for additional leverage to move lever 150 into a locked position beneath notch 192 of side wall 190, and to simultaneously raise storage tank 160 into position above, and out of contact with, base plate 210 and the load cell.
  • lever extension 270 may have a hollow opening 274 that may be inserted over first end 154 of lever 150.
  • the lever extension 270 may also include a sloped entry 272 to facilitate entry of the first end 154 of lever 150 into the hollow opening 274.
  • a greater moment of force may be applied, to facilitate moving the lever 150 and storage tank 160 into the raised position with first end 154 of lever 150 moved into position beneath notch 192 in side wall 190.
  • the lever extension 270 may also be used to move the lever 150 and the storage tank 160 from the raised position to the lowered position.
  • the lever extension 270 may be used with first end 154' as well to move the lever 150' and the storage tank 160' from a raised position to a lowered position, and vice versa.
  • an end of the lever may be configured to be manipulated by a hand-held tool to move an end of the lever from a raised to a lowered position, and vice versa.
  • a lever 350 is shown extending through aperture 194' in side wall 190'.
  • a tool receptacle 358 is secured to an underside of end 354 of lever 350.
  • tool receptacle 358 includes an aperture 359 for receiving an end 371 of tool 370.
  • tool 370 is a screwdriver having a handle 372 and end 371 that may be inserted into aperture 359 of tool receptacle 358 of end 354 of lever 350.
  • a user holds handle 372 of tool 370 and inserts end 371 of tool 370 into aperture 359 of tool receptacle 358.
  • the user pushes down on handle 372 and to the left so that end 354 of lever 350 moves downwardly along sloped wall 196' of aperture 194' in side wall 190' and underneath notch 192' in aperture 194' where lever 350 is positioned in a locked positioned with the second end of lever 350 in a raised position beneath the storage tank (not shown).
  • Tool receptacle 358 may comprise a hex-shaped member that may be welded to end 354 of lever 350.
  • the hex-shaped member can comprise a metal hex tube.
  • a central opening of the hex tube may be threaded or otherwise.
  • the hex-shaped member can comprise a six-side coupling nut with an internally-threaded through-hole centrally located about a longitudinal axis of the coupling nut.
  • Tool receptacle 358 and tool 370 provide a user greater leverage in moving end 354 of lever 350 into (and out of) a locked position.
  • a lever 350 is shown extending through aperture 194 in side wall 190.
  • a tool receptacle 358 is secured to an underside of end 354 of lever 350.
  • tool receptacle 358 includes a threaded aperture 360 for receiving a threaded end 373 of tool 370'.
  • tool 370' has a handle 372 and a threaded end 373 that may be screwed into threaded aperture 360 of tool receptacle 358 of end 354 of lever 350.
  • a user holds handle 372 of tool 370' and screws threaded end 373 of tool 370' into threaded aperture 360 of tool receptacle 358.
  • Tool receptacle 358 may comprise a hex-shaped member that may be welded to end 354 of lever 350. Tool receptacle 358 and tool 370' provide a user greater leverage in moving end 354 of lever 350 into (and out of) a locked position.
  • Figures 14A and 14B show the tool receptacle 358 on an underside of the lever 350.
  • the tool receptacle 358 can be secured to an upper side of the lever 350, opposite the underside of the lever 350.
  • the tool receptacle 358 can be secured to a vertical edge of the lever 350, the vertical edge extending from the underside of the lever 350 to the upper side of the lever 350.
  • the vertical edge to which the receptacle 358 is secured can be a first vertical edge opposite a second vertical edge that contacts the sloped wall 196' shown in Figure 14A or the sloped wall 196 shown in Figure 14B .
  • a flat surface of the hex-shaped member can abut the flat surface of the hex-shaped member.
  • the tool receptacle 358 can comprise a square-shaped member and a flat exterior side of the square-shaped member can abut a flat surface of the lever 350.
  • the square-shaped member can, for example, comprise a square metal tube or one or more square nuts.
  • the tool receptacle can comprise a round-shaped member, such as a round tube.
  • An advantage of securing a tool receptacle with a flat exterior surface to the lever 350 as compared to securing a tool receptacle without a flat exterior surface (e . g ., a round tube) is that a larger surface area contacts the lever 350, which may assist in provided a welded connection, or other connection.
  • Other configurations of tool receptacle 358 are also possible.
  • a linear or rotary actuator, rack and pinion system, or cylinder may be used to exert a force on the bottom of storage tank 160 to move into a position above, and out of contact with, the scale system.
  • a pulley system may be employed that is secured to the top of the storage tank 160 to lift the tank above, and out of contact with, the scale system.
  • a base plate 200 may not be used.
  • a manually operated lever 150 is illustrated.
  • a button or switch may be used to automatically operate electro-mechanical elements such as the linear or rotary actuators noted above to move the storage tank 160 above, and out of contact with, the scale system.
  • Figure 11 depicts a refrigerant recovery and delivery unit 300 having storage tanks 160 and 160'.
  • aperture 194 and 194' are positioned on the same side wall 190.
  • Each of the apertures 194 and 194' may have a lever extending therethough useful to move the storage tanks 160 and 160', respectively, into a locked, raised position from an unlocked position.
  • Figure 12 depicts a refrigerant recovery and delivery unit 400 having storage tanks 160 and 160'.
  • a single aperture 194 is positioned in side wall 190.
  • a first end 254 of lever 250 extends through aperture 194 of side wall 190.
  • a second end of lever 250 branches into two ends 250a and 250b, with end 250a positioned beneath storage tank 160' and end 250b positioned beneath storage tank 160.
  • refrigerant recovery and delivery units 300 and 400 may include aperture 194 having a sloped wall and notch arrangement shown in refrigerant recovery and delivery unit 100 depicted in Figures 2-10B described above.
  • the tank plates 210 and 210', base plates 200 and 200', frame 170, and frame reinforcement 172, and levers 150 and 150' may comprise galvanized sheet metal, which in some cases may be 1/8 inch thick or more. Other materials may also be used.
  • the base plate 200 may be secured to frame 170 and/or frame reinforcement 172 with any suitable fastener such as bolts, and the frame reinforcement 172 of frame 170 may also be secured to frame 170 with any suitable fastener such as bolts.
  • the storage tanks 160 and 160' can also be detachable and/or interchangeable by a user of refrigerant recovery and delivery unit 100.
  • the storage tanks 160 and 160' can include a level indicator that displays to a user of the refrigerant recovery and delivery unit 100 how much of the storage tanks 160 and 160' are filled with fluid (e.g., in case the load cell of scale system 180 is not functioning properly) and/or when the storage tanks 160 or 160' need to be replaced/changed.
  • the storage tanks 160 and 160' can include a temperature probe. The temperature probe could have an analog or digital display that is legible by users of the refrigerant recovery and delivery unit 100, in some embodiments.
  • the temperature probe could transmit temperature measurements to a control system within the refrigerant recovery and delivery unit 100.
  • the temperature within the storage tanks 160 and 160' can indicate whether refrigerant within the storage tanks 160 or 160' is in a gaseous or a liquid state.
  • the storage tanks 160 and 160' can have nozzle and/or hose attachments configured to attach the storage tanks 160 or 160' to other components.
  • the storage tanks 160 and 160' can be attachable to a vehicle or to other components within a refrigerant recovery and delivery unit.
  • the storage tanks 160 and 160' will have a manometer attached to measure pressure within the storage tanks 160 and 160'.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP18201746.7A 2017-10-20 2018-10-22 Vorrichtung und verfahren zum verriegeln eines lagertanks über einer waage für den transport Active EP3473951B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000119259A IT201700119259A1 (it) 2017-10-20 2017-10-20 Apparecchio e metodo per bloccare un serbatoio di accumulo sopra una bilancia per il trasporto
US15/876,705 US10775226B2 (en) 2017-10-20 2018-01-22 Apparatus and method for locking a storage tank above a scale for transportation

Publications (2)

Publication Number Publication Date
EP3473951A1 true EP3473951A1 (de) 2019-04-24
EP3473951B1 EP3473951B1 (de) 2020-07-22

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6119475A (en) * 1999-03-19 2000-09-19 Spx Corporation Tank unload apparatus
FR2888321A1 (fr) * 2005-07-06 2007-01-12 Serac Group Soc Par Actions Si Installation de remplissage ponderal de recipients avec engagement des becs de remplissage dans les recipients
US20090145143A1 (en) * 2007-12-07 2009-06-11 Spx Corporation Background tank fill based on refrigerant composition
US20140144714A1 (en) * 2012-11-27 2014-05-29 Hyclone Laboratories, Inc. Load cell lockouts and related fluid dispensing systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6119475A (en) * 1999-03-19 2000-09-19 Spx Corporation Tank unload apparatus
FR2888321A1 (fr) * 2005-07-06 2007-01-12 Serac Group Soc Par Actions Si Installation de remplissage ponderal de recipients avec engagement des becs de remplissage dans les recipients
US20090145143A1 (en) * 2007-12-07 2009-06-11 Spx Corporation Background tank fill based on refrigerant composition
US20140144714A1 (en) * 2012-11-27 2014-05-29 Hyclone Laboratories, Inc. Load cell lockouts and related fluid dispensing systems

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