Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
  • F04B53/08—Cooling; Heating; Preventing freezing
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
  • F15B1/26—Supply reservoir or sump assemblies
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
  • F15B21/04—Special measures taken in connection with the properties of the fluid
  • F15B21/042—Controlling the temperature of the fluid
  • F15B21/0423—Cooling
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
  • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
  • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
  • F28F2009/228—Oblique partitions
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
  • F28F2265/28—Safety or protection arrangements; Arrangements for preventing malfunction for preventing noise
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
  • F28F2265/30—Safety or protection arrangements; Arrangements for preventing malfunction for preventing vibrations

Definitions

• the present invention relates generally to a reservoir cooler. More particularly, the present invention relates to an integrated air/oil reservoir cooler and noise reduction system.
• Air/hydraulic pumps are used when air is the preferred power source or where electricity is not readily available. Further, these pumps are ideally used in petrochemical and mine applications and flammable and explosive environments. The pumps that are high performance provide consistently high hydraulic flow and pressure for faster tool operation.
• the hydraulic fluid in the reservoir can heat up and must be cooled down in order for the pump to effectively operate.
• conventional cooling systems are not performing as required and the pumps are running too hot.
• the motor of the pumps often include muffler systems to reduce noise that often ice up during operation due to freezing caused by moisture in the ambient air.
• a pump that includes a cooling system that performs as needed and include a noise reduction system and is resistant to freezing up.
• an apparatus in some embodiments include a cooling system.
• An inner tank holds a working fluid and a gap is created between the inner tank and an outer tank.
• a baffle is disposed within the gap to damp the noise and any vibration caused by the introduction of a cooling fluid into the gap.
• the cooling fluid will cool the working fluid in the inner tank and the heat dissipated by the baffle, and the outer shell.
• a cooling system for a pump which can include an inner tank that holds a hydraulic fluid that is used by the pump, an outer tank that surrounds the inner tank, a gap formed between an outer surface of the inner tank and an inner surface of the outer tank, and a baffle disposed in the gap, wherein the baffle redirects a flow of a cooling fluid which results in reduced flow that is introduced into the gap and can maintain an integrated relationship with the cooling capability.
• a cooling system for a pump which can include a first means for containing that holds an operating fluid that is used by the pump, a second means for containing that surrounds the first means for containing, a gap formed between an outer surface of the first means for containing and an inner surface of the second means for containing, and a means for damping disposed in the gap, wherein the means for damping reduces a flow of a cooling fluid that is introduced into the gap.
• a method of cooling a liquid in an inner tank which can include containing working fluid in the inner tank, introducing a cooling fluid into a gap created by the inner tank and an outer tank, cooling the working fluid in the inner tank with the cooling fluid by flowing the cooling fluid past the inner tank and a baffle coupled to the inner tank, and damps a noise with the baffle.
• FIG. 1 illustrates a cross sectional view of a hydraulic reservoir of a pump having a cooling system according to an embodiment of the invention.
• FIG. 2 illustrates the inner tank with the cooling system according to an embodiment of the invention.
• An embodiment in accordance with the invention provides a pump, such as an air/hydraulic pump that includes a cooling system that cools a working fluid such as hydraulic fluids used in the pump and reduces noise during the cooling system's operation.
• a pump such as an air/hydraulic pump that includes a cooling system that cools a working fluid such as hydraulic fluids used in the pump and reduces noise during the cooling system's operation.
• the working fluid can be any fluid including, for example, hydraulic fluids, oils, lubricants, water, phosphate ester, water-based ethylene glycol compounds, and silicone fluids.
• Three most common types of hydraulic liquids are petroleum-based, synthetic fire-resistant, and water-based fire-resistant.
• the working fluid can be synthetic, naturally occurring or a combination thereof.
• any working fluid can be used with the invention and hydraulic fluid is just one exemplary fluid that can be used with invention.
• the cooling system combines a noise and vibration abatement system while reducing the heat in the working fluid reservoir.
• FIG. 1 illustrates a cross sectional view of a hydraulic fluid reservoir 100 of a pump having a cooling system according to an embodiment of the invention.
• the hydraulic fluid reservoir 100 includes an inner tank 110, an outer tank 150 and a gap 170 defined by the inner and outer tanks 110, 150.
• the inner tank 110 contains the hydraulic fluid that needs to be cooled so that the pump can remain operational for a longer period of time.
• the inner tank 110 can be made of any material including heat conducting material so that the inner tank can be cooled by a cooling fluid in the gap 170.
• the inner tank 110 can be made from steel, metal, copper, aluminum, tin and other similar materials that conduct heat.
• the inner tank 110 can be any shape including square, rectangular, triangular and similar shapes so long as it can contain the hydraulic fluid.
• the inner tank 110 can include on an upper surface 115 that can be coupled to the pump itself.
• the inner tank 110 is bolted to the pump via holes 112.
• the holes 112 can receive various bolting components such as a bolt, screws, nuts and similar components.
• the inner tank 110 can be welded, glued or otherwise coupled to the pump.
• the inner tank 110 and the outer tank 150 can be constructed so that they can simply replace the existing fluid reservoir of a pump so that the user does not have to buy a new pump to take advantage of the invention described herein.
• the outer tank 150 surrounds the inner tank 110.
• the outer tank 150 surrounds all sides of the inner tank. For example, if the pump is attached to a side of the inner tank 110 then the outer tank 150 can surrounds the remaining sides.
• the outer tank 150 partially surrounds the inner tank 110, such as one side, two sides, three sides, four sides, and five sides, etc. The sides covered by the outer tank in relation to the inner tank will depend on the amount of cooling that is needed and is based on the heat transfer rate and surface area needed.
• the outer tank 150 can be made of any material including heat conducting material or heat insulating material or a combination thereof.
• the outer tank 150 can be made from steel, metal, copper, aluminum, tin and other similar materials that conduct heat.
• the outer tank can be made from fiber glass, polyurethane foam and similar heat insulating materials.
• the inner tank 110 can be any shape including square, rectangular, triangular and similar shapes.
• the outer tank 150 can also be shaped the same shape or different shape as the inner tank 110. Additionally, the inner and outer tanks 110, 150 can be durable or flexible so long as it can contain the hydraulic fluid.
• the outer tank 150 includes an upper surface 155 that contacts the inner tank.
• the upper surface 155 of the outer tank 150 can be at the same height as the upper surface 115 of the inner tank 110.
• the upper surface 155 of the outer tank 150 can be lower or higher than the upper surface 115 of the inner tank 110.
• the upper surface 155 of the outer tank 150 can form a seal with the inner tank 110. By forming a seal, the cooling fluid can be better contained within the gap 170.
• the upper surface 155 of the outer tank 150 includes a fluid opening 160 so that a fluid such as a cooling fluid can be introduced into the gap 170.
• a fluid such as a cooling fluid
• the cooling fluid can include a refrigerant, air, including compressed air and air motor exhaust, glycols, water and other cooling fluids. The cooling fluid will flow in the gap to cool the inner tank or can simply sit in the gap 170. The cooling fluid can flow into the gap 170 until it exits out of the gap (not shown).
• the gap formed between the outer tank and the inner tank causes a pressure drop in the area where cooling is needed.
• the drop in pressure creates a drop in the temperature in the gap, thereby causing the hydraulic fluid in the inner tank to cool down.
• a baffle 180 is placed or formed in the gap 170.
• the baffle 180 is constructed and designed to perform at least two functions. One function is to radiate heat or conduct heat into the gap 170 where it can be cooled by the cooling medium.
• the baffle 180 provides additional surface area for the inner tank to conduct heat away from itself and for the cooling medium to come into contact with the heat.
• the baffle 180 includes two components that are angled at about 90 degrees to each other. However, other angles, such as 45, 60, 120 degrees and others would also work according to embodiments of the invention.
• the baffle 180 can be formed in one piece or integral with the inner tank or the outer tank.
• the second function of the baffle 180 is to damp or abate the noise that the cooling fluid can cause.
• the baffle can redirect the flow for the entire cooling fluid or for parts of the flow of the cooling fluid which results in reduced flow. For example, in any space between the baffle 180 and the outer tank 150 can flow fully. By decreasing the flow of the cooling fluid, less noise and vibrations are caused in the cooling system.
• the baffle 180 can be placed between the inner and outer tanks 110, 150.
• the baffle 180 can be held in place through friction fitting between the inner and outer tanks 110, 150 and can be placed anywhere in the gap 170.
• the baffle 180 can be welded, glued or otherwise coupled to the inner tank 110 or outer tank 150.
• the baffle 180 can be formed as part of the inner or outer tanks.
• the baffle 180 can be made of the same or different materials as the inner tank 110 or the outer tank 150.
• the baffle 180 can be placed on one side of the inner tank 110 near the fluid opening or on as many sides of the inner tank as needed. In another embodiment, there can be more than one baffle on a particular side.
• the baffle can be coupled together or spaced apart from each other on a given side.
• the baffle can be placed at a point after where the cooling fluid is introduced.
• FIG. 2 illustrates the inner tank 110 with the cooling system 100 according to an embodiment of the invention.
• the inner tank 110 can be filled with a working fluid such as a hydraulic fluid that is used by the pump.
• the hydraulic fluid will heat up during the pump's use and will need to cooled in order for the pump to be continuously used.
• the outer tank 150 surrounds five sides of the inner tank 110.
• the upper portion 155 of the outer tank 150 is less in height than the upper portion 115 of the inner tank 110.
• the upper portion 155 forms a seal with the inner tank so that the cooling fluid is contained within the gap 170 formed by the inner and outer tanks 110, 150.
• Baffle 180 is positioned on one side of the inner tank 110 to affect the flow of the cooling medium.
• the cooling medium can be cold compressed air that is provided by a compressor (not shown).
• the cooling medium is cold compressed exhaust air that is provided by the air motor driving the pump.
• the compressed air can enter the gap 170 at the fluid opening 160 and travel in the direction shown by arrows 190.
• the rapid change in volume causes the compressed air to release the energy and become cold.
• the compressed air hits the baffle 180 it can travel in two directions. One direction is along the surface of the baffle where the flow is slowed due to the angle of the baffle.
• the second direction is in the openings between baffles and outer tank or even the inner tank (in some embodiments). The second direction may or may not slow down the flow of the cooling fluid.
• the arrows 190 in the figures illustrate an example flow of the cooling fluid.
• the cooling fluid flows in the gap and cools the hydraulic fluid in the inner tank.
• the cooling fluid can exit at a side of the outer tank as shown by arrow 195.
• the cooling fluid can exit anywhere along a side of the outer tank as desired by the user. Further, the cooling fluid does not need to flow continuously to cool the inner tank and can remain stationary in the gap for a predetermined period of time.
• cooling fluid can be introduced into the gap at the fluid opening.
• the fluid will flow around and/or along the baffles and also flow along the sides of the inner tank.
• the hydraulic fluid in the inner tank can be cooled as the cooling fluid is flowing. With the increase in surface area that the baffles provide, the hydraulic fluid is cooled even faster.
• the baffles redirect the cooling fluid and as a result also slow down the cooling fluid so that noise and vibrations are decreased during the operation of the cooling system.
• the cooling fluid then can exit out of the outer tank at a predetermined location.
• the user will be less fatigued from the reduced noise and vibrations. Further, the user can operate the pump for a longer period of time since the hydraulic fluid is cooled down more efficiently by the invention. Further, the cooling of the hydraulic fluid provided for a safer pump due to reduced heat at the user's contact points. Further, the embodiments disclosed herein can be integrated into existing pump designs, thereby saving the user from buying a different pump.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Fluid Mechanics (AREA)
• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
• Details Of Reciprocating Pumps (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (6)

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Citations (2)

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• 2009
  • 2009-12-23 US US12/646,392 patent/US20110146958A1/en not_active Abandoned
• 2010
  • 2010-12-03 EA EA201200933A patent/EA201200933A1/ru unknown
  • 2010-12-03 CN CN2010800629456A patent/CN102741641A/zh active Pending
  • 2010-12-03 EP EP10839974.2A patent/EP2516951A4/de not_active Withdrawn
  • 2010-12-03 WO PCT/US2010/058878 patent/WO2011078955A1/en active Application Filing
  • 2010-12-06 TW TW099142439A patent/TW201135070A/zh unknown

Patent Citations (2)

Non-Patent Citations (1)

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