US20170227269A1 - Freon Refilling Apparatus for Vehicles - Google Patents

Freon Refilling Apparatus for Vehicles Download PDF

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Publication number
US20170227269A1
US20170227269A1 US15/140,491 US201615140491A US2017227269A1 US 20170227269 A1 US20170227269 A1 US 20170227269A1 US 201615140491 A US201615140491 A US 201615140491A US 2017227269 A1 US2017227269 A1 US 2017227269A1
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US
United States
Prior art keywords
tube fitting
pushrod
operating handle
freon
vehicles
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.)
Abandoned
Application number
US15/140,491
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English (en)
Inventor
Zhuo Cai
Weicai Jiang
Genfa Mao
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.)
WENLING JENNFENG INDUSTRY Inc
Original Assignee
WENLING JENNFENG INDUSTRY Inc
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
Application filed by WENLING JENNFENG INDUSTRY Inc filed Critical WENLING JENNFENG INDUSTRY Inc
Assigned to WENLING JENNFENG INDUSTRY INC. reassignment WENLING JENNFENG INDUSTRY INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CAI, Zhuo, JIANG, WEICAI, MAO, GENFA
Publication of US20170227269A1 publication Critical patent/US20170227269A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • 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
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • 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
    • F25B2345/001—Charging refrigerant to a cycle

Definitions

  • the present invention relates to the technical field of vehicle maintenance tools, and particularly to a Freon refilling apparatus for vehicles.
  • the air conditioner system is a standalone sealed circulating system. As required, a certain amount of refrigerant should be filled into the compressor, and Freon is commonly used. During the long term usage of automobiles, the cooling performance gets poor. One reason for that is the leakage of Freon; therefore, it is necessary to refill Freon into the compressor.
  • a certain amount of Freon is sealed in a specially manufactured gas cylinder.
  • the gas cylinder generally uses a diaphragm or a valve core to seal the Freon.
  • the gas cylinder is connected to a special refilling apparatus.
  • the refilling apparatus has a pushrod, which is driven to move by swinging the operating handle, so as to pierce the diaphragm or push the valve core to open the gas cylinder.
  • the gas cylinder may be erroneously opened if the operating handle is triggered by mistake. The security is fairly low.
  • One objective of a preferred embodiment of the present invention is to avoid the issues stated above in the prior art, and to provide a Freon refilling apparatus for vehicles.
  • the present Freon refilling apparatus can prevent gas cylinders from being opened by mistake, and achieves a higher security.
  • a Freon refilling apparatus for vehicles comprises an outer shell and a tube fitting which is secured to the outer shell.
  • a refilling duct is secured to the tube fitting and is used to connect with the air conditioner of vehicles.
  • One end of the tube fitting has a connection port to connect with the outlet of the gas cylinder.
  • the refilling apparatus also comprises an operating handle and a pushrod which movably plugs into the tube fitting.
  • One end of the operating handle is hinged to the tube fitting, and the other end is a press part which is located alongside the tube fitting. When the press part swings and gets close to the tube fitting, it drives the pushrod to move and open the gas cylinder.
  • a confining plate is also hinged to the press part. The confining plate has an active contact part, while the outer shell has a passive contact part which is located between the press part and the tube fitting. The active contact part can lean against the passive contact part. The operating handle is locked when that happens.
  • One end of the refilling duct is connected to the automotive air conditioner, and the other end is connected to the tube fitting.
  • gas cylinders which are sealed by a valve core or a diaphragm respectively; however, both types of gas cylinders can be connected to the connection port of the tube fitting.
  • the operating handle is used to drive the pushrod, namely, the pushrod moves when the press part swings and gets close to the tube fitting.
  • the connection port is connected to a gas cylinder complete with a diaphragm
  • the pushrod can piece the diaphragm to open the gas cylinder.
  • the connection port is connected to a gas cylinder complete with a valve core, the pushrod can push the valve core to open the gas cylinder as well.
  • the confining plate since a confining plate is hinged to the press part, in dormant situations where the refilling apparatus is being sold or exhibited, the confining plate can be pulled to make the active contact part press against the passive contact part. Since the contact location of the two parts is located between the press part and the tube fitting, the press part is blocked by the confining plate and cannot approach the tube fitting under external forces. This prevents the gas cylinder from being opened by mistake and achieves a higher security.
  • the first avoidance opening is designed on the outer shell, and the press part stretches out of the first avoidance opening.
  • the active contact part is the free end of the confining plate.
  • a long strip shaped clamping slot is designed on the edge of the active contact part, in the lengthwise direction.
  • the passive contact part is the edge of the first avoidance opening that is close to the tube fitting.
  • the clamping slot of the active contact part can clamp the passive contact part. Namely, the active contact part presses against the passive contact part and, in the meanwhile, the clamping slot makes the active contact part not able to detach from the passive contact part unless external forces are applied.
  • the confining plate is pushed by external forces, it deforms the passive contact part and thus the active press part detaches. After that, the press part can swing inside the first avoidance opening.
  • the edge of the first avoidance opening that is away from the tube fitting is the confining edge.
  • the gap between the confining edge and the outer wall of the operating handle is smaller than the depth of the clamping slot.
  • the confining edge limits the swing of the press part in the direction away from the tube fitting. Namely, when no external force is applied, even if the press part leans against the confining edge, the active contact part will not detach from the passive contact part.
  • the active contact part of the confining plate clamps against the passive contact part, and the stability is improved.
  • the confining plate is made of plastic, and the outer shell has a thin-walled plastic structure.
  • the passive contact part is of a thin-walled plastic structure, and has a certain elastic and deformation capacity; therefore, the active contact part can detach from the passive contact part under external forces, and the structure is simple.
  • connection columns on both of the opposite side edges of the confining plate, and the connection columns are on the side edge away from the clamping slot.
  • the operating handle is of a thin-walled structure with a cavity.
  • the confining plate is hinged to the inner wall of the cavity through the two connection columns.
  • the confining plate is hinged to the inner wall of the cavity through the connection columns, so that the end of the confining plate where the clamping slot is located can swing. After the active contact part detaches from the passive contact part, the confining plate may be pushed into the cavity, and the locating bosses can fit into the locating holes, so as to secure the confining plate in the cavity, and prevent the confining plate from interfering with the actions of the press part.
  • the thickness of the confining plate tapers from the end with the clamping slot to the other end. Namely, the end of the confining plate where the clamping slot is located is heavier, and the confining plate drops automatically after detaching from the passive contact part. Even if it is not secured in the cavity, it will not interfere with the actions of the press part.
  • the operating handle is curved.
  • the second avoidance opening is also designed on the operating handle.
  • One end of the refilling duct is secured on the tube-connecting part, and the other end passes through the second avoidance opening.
  • the curved operating handle allows the press part to be located alongside the tube fitting. Meanwhile, the refilling duct passes through the second avoidance opening, so both of the press part and the refilling duct are located in the same side of the tube fitting, which achieves a more compact structure.
  • connection part on the outer wall of the tube fitting, and one end of the operating handle is hinged to the connection part.
  • a push part on the operating handle and there is the active push slope on the push part.
  • One end of the pushrod stretches out of the tube fitting, and there is the passive push slope on the end that stretches out of the tube fitting.
  • the active push slope presses against the passive push slope.
  • Both of the press part and the push part are located in the same side of the hinge point of the operating handle. When the press part is pressed in the direction close to the tube fitting, the push part moves downwards; meanwhile, the active push slope presses against the passive push slope and moves the pushrod. The operation is convenient.
  • an annular sealing groove is designed on the outer peripheral wall of the pushrod, and a sealing ring is installed in the sealing groove.
  • the sealing ring presses against the inner peripheral wall of the tube fitting.
  • the tube-connecting part is located between the connection port and the sealing ring.
  • the end of the pushrod needs to stretch out of the tube fitting, to connect with the operating handle.
  • a sealing ring is installed on the pushrod, to achieve the seal between the outer peripheral wall of the pushrod and the inner peripheral wall of the tube fitting, so as to avoid the leakage of Freon from the tube fitting.
  • the Freon refilling apparatus for vehicles there is a sealing cone on the inner wall of the tube fitting, which is located between the tube-connecting part and the connection port.
  • the larger diameter end of the sealing cone faces the connection port.
  • An annular sealing block is secured to the pushrod, and a reset spring is installed over the pushrod.
  • One end of the reset spring presses against the tube fitting, and the other end presses against the pushrod.
  • the sealing block will press against the sealing cone under the force from the reset spring.
  • the operating handle is reset. Under the action of the reset spring, the pushrod moves to its original position, and the sealing block presses against the sealing cone. Hence, the connection between the refilling duct and the connection port is blocked, which prevents backflow of the Freon in the air conditioner after the refill completes.
  • the present Freon refilling apparatus for vehicles has the following advantages:
  • FIG. 1 is a perspective view of a preferred embodiment of the present Freon refilling apparatus for vehicles.
  • FIG. 2 is a sectional view of a preferred embodiment of the present Freon refilling apparatus for vehicles.
  • FIG. 3 is a detailed view of Section A in FIG. 2 .
  • FIG. 4 is a perspective view of the confining plate.
  • FIG. 5 is a detailed view of Section B in FIG. 2 .
  • FIG. 6 is a detailed view of Section C in FIG. 2 .
  • a Freon refilling apparatus for vehicles comprises the outer shell ( 1 ), the tube fitting ( 2 ), and the refilling duct ( 3 ).
  • the tube fitting ( 2 ) is secured to the outer shell ( 1 ).
  • One end of the refilling duct ( 3 ) is connected to the tube fitting ( 2 ), and the other end is used to connect with the automotive air conditioner.
  • One end of the tube fitting ( 2 ) has a connection port ( 21 ).
  • the refilling apparatus also comprises the operating handle ( 4 ) and the pushrod ( 5 ) which movably plugs into the tube fitting ( 2 ).
  • One end of the pushrod ( 5 ) plugs into the connection port ( 21 ) and aligns with the diaphragm or the valve core of the gas cylinder.
  • One end of the operating handle ( 4 ) is hinged to the tube fitting ( 2 ), and the other end is a press part ( 41 ) which is located alongside the tube fitting ( 2 ). When the press part ( 41 ) swings and gets close to the tube fitting ( 2 ), it drives the pushrod ( 5 ) to move and open the gas cylinder.
  • connection port ( 21 ) When the connection port ( 21 ) is connected to a gas cylinder complete with a diaphragm, the pushrod ( 5 ) can piece the diaphragm to open the gas cylinder.
  • the pushrod ( 5 ) When the connection port is connected to a gas cylinder complete with a valve core, the pushrod ( 5 ) can push the valve core to open the gas cylinder as well.
  • the confining plate ( 6 ) is also hinged to the press part ( 41 ).
  • the confining plate ( 6 ) has an active contact part ( 61 ), while the outer shell ( 1 ) has a passive contact part ( 11 ) which is located between the press part ( 41 ) and the tube fitting ( 2 ).
  • the active contact part ( 61 ) can lean against the passive contact part ( 11 ).
  • the operating handle ( 4 ) is locked when that happens.
  • the confining plate ( 6 ) can be pulled to make the active contact part ( 61 ) press against the passive contact part ( 11 ).
  • the contact location of the two parts is located between the press part ( 41 ) and the tube fitting ( 2 ), the press part ( 41 ) is blocked by the confining plate ( 6 ) and cannot approach the tube fitting ( 2 ) under external forces. This prevents the gas cylinder from being opened by mistake and achieves a higher security.
  • the first avoidance opening ( 12 ) is designed on the outer shell ( 1 ), and the press part ( 41 ) stretches out of the first avoidance opening ( 12 ).
  • the active contact part ( 61 ) is the free end of the confining plate ( 6 ).
  • a long strip shaped clamping slot ( 62 ) is designed on the edge of the active contact part ( 61 ), in the lengthwise direction.
  • the passive contact part ( 11 ) is the edge of the first avoidance opening ( 12 ) that is close to the tube fitting ( 2 ).
  • the clamping slot ( 62 ) of the active contact part ( 61 ) can clamp the passive contact part ( 11 ).
  • the clamping slot ( 62 ) makes the active contact part ( 61 ) not able to detach from the passive contact part ( 11 ) unless external forces are applied.
  • the confining plate ( 6 ) When the confining plate ( 6 ) is pushed by external forces, it deforms the passive contact part ( 11 ) and thus the active press part ( 61 ) detaches.
  • the press part ( 41 ) can swing inside the first avoidance opening ( 12 ).
  • the edge of the first avoidance opening ( 12 ) that is away from the tube fitting ( 2 ) is the confining edge ( 13 ).
  • the gap between the confining edge ( 13 ) and the outer wall of the operating handle ( 4 ) is smaller than the depth of the clamping slot ( 62 ).
  • the confining edge ( 13 ) limits the swing of the press part ( 41 ) in the direction away from the tube fitting ( 2 ). Namely, when no external force is applied, even if the press part ( 41 ) leans against the confining edge ( 13 ), the active contact part ( 61 ) will not detach from the passive contact part ( 11 ).
  • the active contact part ( 61 ) of the confining plate ( 6 ) clamps the passive contact part ( 11 ), and the stability is improved.
  • the confining plate ( 6 ) is made of plastic, and the outer shell ( 1 ) has a thin-walled plastic structure.
  • the passive contact part ( 11 ) is of a thin-walled plastic structure, and has a certain elastic and deformation capacity; therefore, the active contact part ( 61 ) can detach from the passive contact part ( 11 ) under external forces, and the structure is simple.
  • connection columns ( 63 ) on both of the opposite side edges of the confining plate ( 6 ), and the connection columns ( 63 ) are on the side edge away from the clamping slot ( 62 ).
  • the operating handle ( 4 ) is of a thin-walled structure with a cavity ( 42 ).
  • the confining plate ( 6 ) is hinged to the inner wall of the cavity ( 42 ) through the two connection columns ( 63 ).
  • the confining plate ( 6 ) may be pushed into the cavity ( 42 ), and the locating bosses ( 64 ) can fit into the locating holes ( 43 ), so as to secure the confining plate ( 6 ) in the cavity ( 42 ), and prevent the confining plate ( 6 ) from interfering with the actions of the press part ( 41 ).
  • the thickness of the confining plate ( 6 ) tapers from the end with the clamping slot ( 62 ) to the other end.
  • the operating handle ( 4 ) is curved.
  • the second avoidance opening ( 44 ) is also designed on the operating handle ( 4 ).
  • the curved operating handle ( 4 ) allows the press part ( 41 ) to be located alongside the tube fitting ( 2 ). Meanwhile, the refilling duct ( 3 ) passes through the second avoidance opening ( 44 ), so both of the press part ( 41 ) and the refilling duct ( 3 ) are located in the same side of the tube fitting ( 2 ), which achieves a more compact structure.
  • connection part ( 23 ) there is a connection part ( 23 ) on the outer wall of the tube fitting ( 2 ), and one end of the operating handle ( 4 ) is hinged to the connection part ( 23 ).
  • One end of the pushrod ( 5 ) stretches out of the tube fitting ( 2 ), and there is the passive push slope ( 51 ) on the end that stretches out of the tube fitting.
  • the active push slope ( 46 ) may lean against the passive push slope ( 51 ).
  • the active push slope ( 46 ) presses against the passive push slope ( 45 ).
  • Both of the press part ( 41 ) and the push part ( 45 ) are located in the same side of the hinge point of the operating handle ( 4 ).
  • the press part ( 41 ) is pressed in the direction close to the tube fitting ( 2 )
  • the push part ( 45 ) moves downwards.
  • the active push slope ( 46 ) presses against the passive push slope ( 51 ) and moves the pushrod ( 5 ).
  • the operation is simple.
  • An annular sealing groove ( 52 ) is designed on the outer peripheral wall of the pushrod ( 5 ), and a sealing ring ( 53 ) is installed in the sealing groove ( 52 ).
  • the sealing ring ( 53 ) presses against the inner peripheral wall of the tube fitting ( 2 ).
  • the tube-connecting part ( 22 ) is located between the connection port ( 21 ) and the sealing ring ( 53 ).
  • the end of the pushrod ( 5 ) needs to stretch out of the tube fitting ( 2 ), to connect with the operating handle ( 4 ).
  • a sealing ring ( 53 ) is installed on the pushrod ( 5 ), to achieve the seal between the outer peripheral wall of the pushrod ( 5 ) and the inner peripheral wall of the tube fitting ( 2 ), so as to avoid the leakage of Freon from the tube fitting ( 2 ).
  • the larger diameter end of the sealing cone ( 24 ) faces the connection port ( 21 ).
  • An annular sealing block ( 54 ) is secured to the pushrod ( 5 ), and a reset spring ( 55 ) is installed over the pushrod ( 5 ).
  • One end of the reset spring ( 55 ) presses against the tube fitting ( 2 ), and the other end presses against the pushrod ( 5 ).
  • the sealing block ( 54 ) will press against the sealing cone ( 24 ) under the force from the reset spring ( 55 ). After the refilling process of the automotive air conditioner completes, the operating handle ( 4 ) is reset.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
US15/140,491 2016-02-04 2016-04-28 Freon Refilling Apparatus for Vehicles Abandoned US20170227269A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610079213.7A CN105546339B (zh) 2016-02-04 2016-02-04 一种汽车氟利昂换气装置
CNCN201610079213.7 2016-02-04

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US20170227269A1 true US20170227269A1 (en) 2017-08-10

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US15/140,491 Abandoned US20170227269A1 (en) 2016-02-04 2016-04-28 Freon Refilling Apparatus for Vehicles

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CN (1) CN105546339B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI700453B (zh) * 2019-04-24 2020-08-01 楊敏盛 車用填充劑注入器

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US4558821A (en) * 1983-03-03 1985-12-17 Canyon Corporation Trigger-type sprayer with integrally formed housing, trigger, nozzle and cylinder
US5114049A (en) * 1990-10-31 1992-05-19 Calmar Inc. Child-resistant trigger sprayer
US5738251A (en) * 1993-12-11 1998-04-14 Owens-Illinois Closure Inc. Trigger sprayer
US20050217285A1 (en) * 2003-10-31 2005-10-06 Vincent Carrubba Apparatus and method for servicing a coolant system
US20060113327A1 (en) * 2004-11-29 2006-06-01 Seaquistperfect Dispensing Foreign, Inc. Dispenser with lock
US20070228190A1 (en) * 2006-03-29 2007-10-04 Spraying Systems Co. Hand held trigger-operated spray gun
US20130261532A1 (en) * 2012-03-26 2013-10-03 Simcro Limited Applicator
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US20140339327A1 (en) * 2013-05-14 2014-11-20 Fomo Products, Inc. Temperature indicating foam gun nozzles & hoses
US20140346257A1 (en) * 2013-05-23 2014-11-27 Finishing Brands Holdings Inc. Spray Tool Locking System

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US3927834A (en) * 1974-02-12 1975-12-23 Tetsuya Tada Sprayer
US4558821A (en) * 1983-03-03 1985-12-17 Canyon Corporation Trigger-type sprayer with integrally formed housing, trigger, nozzle and cylinder
US5114049A (en) * 1990-10-31 1992-05-19 Calmar Inc. Child-resistant trigger sprayer
US5738251A (en) * 1993-12-11 1998-04-14 Owens-Illinois Closure Inc. Trigger sprayer
US20050217285A1 (en) * 2003-10-31 2005-10-06 Vincent Carrubba Apparatus and method for servicing a coolant system
US20060113327A1 (en) * 2004-11-29 2006-06-01 Seaquistperfect Dispensing Foreign, Inc. Dispenser with lock
US20070228190A1 (en) * 2006-03-29 2007-10-04 Spraying Systems Co. Hand held trigger-operated spray gun
US20140291415A1 (en) * 2011-11-02 2014-10-02 The Ohio State University Spray device
US20130261532A1 (en) * 2012-03-26 2013-10-03 Simcro Limited Applicator
US20140339327A1 (en) * 2013-05-14 2014-11-20 Fomo Products, Inc. Temperature indicating foam gun nozzles & hoses
US20140346257A1 (en) * 2013-05-23 2014-11-27 Finishing Brands Holdings Inc. Spray Tool Locking System

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI700453B (zh) * 2019-04-24 2020-08-01 楊敏盛 車用填充劑注入器

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CN105546339A (zh) 2016-05-04
CN105546339B (zh) 2018-10-19

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