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AU2005326650A1 - Liquid-vapor separator for a minichannel heat exchanger - Google Patents

Liquid-vapor separator for a minichannel heat exchanger Download PDF

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Publication number
AU2005326650A1
AU2005326650A1 AU2005326650A AU2005326650A AU2005326650A1 AU 2005326650 A1 AU2005326650 A1 AU 2005326650A1 AU 2005326650 A AU2005326650 A AU 2005326650A AU 2005326650 A AU2005326650 A AU 2005326650A AU 2005326650 A1 AU2005326650 A1 AU 2005326650A1
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AU
Australia
Prior art keywords
inlet
liquid
set forth
refrigerant
valve
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
AU2005326650A
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AU2005326650B2 (en
Inventor
Mikhail B. Gorbounov
Michael K. Sahm
Parmesh Verma
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Carrier Corp
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Carrier Corp
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Publication of AU2005326650A1 publication Critical patent/AU2005326650A1/en
Application granted granted Critical
Publication of AU2005326650B2 publication Critical patent/AU2005326650B2/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006Accumulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/22Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04Refrigeration circuit bypassing means
    • F25B2400/0409Refrigeration circuit bypassing means for the evaporator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23Separators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2501Bypass valves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Description

WO 2006/083445 PCT/US2005/047359 Liquid-Vapor Separator for a Minichannel Heat Exchanger Background of the Invention [0001] This invention relates generally to air conditioning and refrigeration systems and, more particularly, to parallel flow evaporators thereof. [0002] A definition of a so-called parallel flow heat exchanger is widely used in the air conditioning and refrigeration industry now and designates a heat exchanger with a plurality of parallel passages, among which refrigerant is distributed and flown in the orientation generally substantially perpendicular to the refrigerant flow direction in the inlet and outlet manifolds. This definition is well adapted within the technical community and will be used throughout the text. [0003] Refrigerant maldistribution in refrigerant system evaporators is a well-known phenomenon. It causes significant evaporator and overall system performance degradation over a wide range of operating conditions. Maldistribution of refrigerant may occur due to differences in flow impedances within evaporator channels, non-uniform airflow distribution over external heat transfer surfaces, improper heat exchanger orientation or poor manifold and distribution system design. Maldistribution is particularly pronounced in parallel flow evaporators due to their specific design with respect to refrigerant routing to each refrigerant circuit. Attempts to eliminate or reduce the effects of this phenomenon on the performance of parallel flow evaporators have been made with little or no success. The primary reasons for such failures have generally been related to complexity and inefficiency of the proposed technique or prohibitively high cost of the solution. [0004] In recent years, parallel flow heat exchangers, and brazed aluminum heat exchangers in particular, have received much attention and interest, not just in the automotive field but also in the heating, ventilation, air conditioning and refrigeration (HVAC&R) industry. The primary reasons for the employment of the parallel flow technology are related to its superior performance, high degree of compactness and enhanced resistance to corrosion. Parallel flow heat exchangers are now utilized in both condenser and evaporator applications for multiple products and system designs and configurations. The evaporator applications, although promising greater benefits and rewards, are more challenging and problematic.
WO 2006/083445 PCT/US2005/047359 Refrigerant maldistribution is one of the primary concerns and obstacles for the implementation of this technology in the evaporator applications. [0005] As known, refrigerant maldistribution in parallel flow heat exchangers occurs because of unequal pressure drop inside the channels and in the inlet and outlet manifolds, as well as poor manifold and distribution system design. In the manifolds, the difference in length of refrigerant paths, phase separation and .gravity are the primary factors responsible for maldistribution. Inside the heat exchanger channels, variations in the heat transfer rate, airflow distribution, manufacturing tolerances, and gravity are the dominant factors. Furthermore, the recent trend of the heat exchanger performance enhancement promoted miniaturization of its channels (so-called minichannels and microchannels), which in turn negatively impacted refrigerant distribution. Since it is extremely difficult to control all these factors, many of the previous attempts to manage refrigerant distribution, especially in parallel flow evaporators, have failed. [0006] In the refrigerant systems utilizing parallel flow heat exchangers, the inlet and outlet manifolds or headers (these terms will be used interchangeably throughout the text) usually have a conventional cylindrical shape. When the two phase flow enters the header, the vapor phase is usually separated from the liquid phase. Since both phases flow independently, refrigerant maldistribution tends to occur. [0007] If the two-phase flow enters the inlet manifold at a relatively high velocity, the liquid phase (droplets of liquid) is carried by the momentum of the flow further away from the manifold entrance to the remote portion of the header. Hence, the channels closest to the manifold entrance receive predominantly the vapor phase and the channels remote from the manifold entrance receive mostly the liquid phase. If, on the other hand, the velocity of the two-phase flow entering the manifold is low, there is not enough momentum to carry the liquid phase along the header. As a result, the liquid phase enters the channels closest to the inlet and the vapor phase proceeds to the most remote ones. Also, the liquid and vapor phases in the inlet manifold can be separated by the gravity forces, causing similar maldistribution consequences. In either case, maldistribution phenomenon quickly surfaces and manifests itself in evaporator and overall system performance degradation. 2 WO 2006/083445 PCT/US2005/047359 [0008] In tube-and-fin type heat exchangers, it has been common practice to provide individual capillary tubes or other expansion devices leading to the respective tubes in order to get relatively uniform expansion of a refrigerant into the bank of tubes. Another approach has been to provide individual expansion devices such as so-called "dixie" cups at the entrance opening to the respective tubes, for the same purpose. Neither of these approaches are practical in minichannel or microchannel applications, wherein the channels are relatively small and closely spaced such that the individual restrictive devices could not, as a practical manner, be installed within the respective channels during the manufacturing process. [0009] In the air conditioning and refrigeration industry, the terms "parallel flow" and "minichannel" (or "microchannel") are often used interchangeably in reference to the abovementioned heat exchangers, and we will follow similar practice. Furthermore, minichannel and microchannel heat exchangers differ only by a channel size (or so-called hydraulic diameter) and can equally benefit from the teachings of the invention. We will refer to the entire class of these heat exchangers (minichannel and microchannel) as minichannel heat exchangers throughout the text and claims. Summary of the Invention [0010] Briefly, in accordance with one aspect of the invention, a liquid vapor separator is provided between the expansion device and the inlet header such that the separator causes the refrigerant vapor to pass directly to the compressor and only liquid refrigerant to pass to the inlet manifold. In this way, a more uniform distribution of liquid refrigerant to the individual parallel channels is obtained. [0011] In accordance with another aspect of the invention, the liquid-vapor separator comprises a float valve with a float member oriented to move vertically to permit the flow of refrigerant vapor therearound but if liquid refrigerant flows into the valve, the float member will tend to seat and prevent the flow of liquid refrigerant therethrough. [0012] By yet another aspect of the invention, a second float valve is interconnected between a downstream end of the inlet manifold and the compressor 3 WO 2006/083445 PCT/US2005/047359 such that the residual vapor from the liquid refrigerant will pass directly to the compressor. [0013] In the drawings as hereinafter described, a preferred embodiment is depicted; however, various other modifications and alternate constructions can be made thereto without departing from the true spirit and scope of the invention. Brief Description of the Drawings [0014] Fig. 1 is a schematic illustration of one embodiment of the invention. [0015] Fig. 2 is a modified version thereof. [0016] Fig. 3 is an alternate embodiment of the present invention. [0017] Fig. 4 is a modified version thereof. Description of the Preferred Embodiment [0018] Referring now to Fig. 1, the invention is shown generally at 10 as applied to a minichannel heat exchanger 11 having an inlet manifold 12, an outlet manifold 13, and a plurality of parallel microchannels 14 interconnecting the inlet manifold 12 to the outlet manifold 13. [0019] An inlet chamber 16 is fluidly connected to the upstream end 17 of the inlet manifold 12 by way of conduit 18. At an upper portion of the inlet chamber 16 an inlet line 19 provides fluid communication from an expansion device such that a mixture of liquid and vapor refrigerant flows into the upper portion of the inlet chamber 16. The heavier liquid refrigerant tends to fall to the bottom of the inlet chamber 16 and flow through the conduit 18 to the inlet manifold 12 such that each of the parallel minichannels 14 have single phase liquid refrigerant presented at their inlet ends. [0020] Also connected at the upper portion of the inlet chambers 16 is a bypass duct 21 for conducting the flow of refrigerant vapor to the compressor as indicated by the arrows. Disposed within the bypass duct 21 is a float valve 22 having an inlet port 23, an outlet port 24, and a float member 26. [0021] In operation, as the two phase refrigerant enters the inlet line 19, the liquid refrigerant tends to drop into the lower portion of the inlet chamber 16 and the refrigerant vapor is drawn upwardly by the suction of the compressor. As it enters 4 WO 2006/083445 PCT/US2005/047359 the float valve 22, it passes around the float member 26 and through the outlet port 24 to the compressor. If liquid refrigerant enters the float valve 22, it will tend to lift the float member 26 such that it will engage the outlet port 24 and seat so as to prevent the flow of liquid toward the compressor. The liquid refrigerant will then drop to the lower portion of the float valve and then flow into the inlet chamber 16. [0022] The outlet manifold 13 is fluidly attached to the compressor by way of an outlet line 15 so that, after the liquid refrigerant is converted to vapor as it passes through the microchannels 14 and into the outlet manifold 13, the refrigerant vapor is then drawn into the compressor. It should be mentioned that, if the vapor from the outlet line 15 tends to flow into the bypass duct 21, the float member 26 will be caused to seat against the inlet port 23 and prevent vapor from entering the inlet chamber 16. [0023] Referring now to Fig. 2, a similar arrangement is shown, but with additional features. At the downstream end 27 of the inlet manifold 12 a conduit 28 is connected to provide fluid communication to the compressor by way of a second float valve 29. This float valve separator operates in the same manner as the float valve 22 as described hereinabove to remove any residual vapor that may be in the downstream end 27 of the inlet manifold 12. That is, all liquid refrigerant in the manifold 12 should flow upwardly through the microchannels 14, and any residual vapor would pass upwardly through the conduit 28, the float valve 29 and to the compressor. [0024] It will also be seen in the Fig. 2 embodiment, that the inlet chamber 16 of the Fig. 1 embodiment has been changed from its reservoir form to a simple piping arrangement 31. While the piping arrangement 31 will contain less liquid refrigerant, it operates in substantially the same way as the inlet chamber 16 as described hereinabove. [0025] The Fig. 1 and Fig. 2 embodiments as described hereinabove relate to arrangements wherein the heat exchanger 11 is orientated such that the manifolds 12 and 13 are horizontal and the minichannels 14 are vertical. The Fig. 3 embodiment illustrates the invention as used in a configuration wherein the headers are orientated vertically and the minichannels are orientated horizontally. 5 WO 2006/083445 PCT/US2005/047359 [0026] Here the minichannel heat exchanger 32 has a manifold 33, a manifold 34 and parallel minichannels 36. The manifold 33 is divided into upper and lower sections 37 and 38, with the microchannels 36 in the lower sections 38 acting to conduct the flow of refrigerant to the manifold 34 and the minichannels in the upper section 37 acting to conduct the flow of refrigerant from the manifold 34 back to the upper section 37 of the manifold 33. Again, a float valve 39 is provided in a line 41 connecting the upper section 37 of the inlet manifold 33 to the compressor. This float valve operates in the same manner as the float valve 29 of the Fig. 2 embodiment to remove any residual vapor from the liquid. [0027] In the Fig. 4 embodiment, there is provided a conduit 42 for fluid communication between the downstream end of manifold 34 and the compressor suction. A float valve 43 is provided and operates in the same manner as the float valve described hereinabove. Its purpose is to separate any vapor that appears after the first pass of the heat exchanger so that only liquid refrigerant is fed to the second pass of the heat exchanger. [0028] In each of the liquid-vapor separators described hereinabove, the selection of the float member and the seats are made to be consistent with the refrigerant fluid in respect to density, buoyancy and seating force requirements, as well as for material compatibility considerations. 6

Claims (20)

1. A liquid-vapor separator for a heat exchanger of the type having inlet and outlet manifolds fluidly interconnected by a plurality of parallel minichannels for conducting the flow of refrigerant therebetween, comprising: an inlet chamber fluidly connected between said inlet manifold and an expansion device that is adapted to deliver two phase refrigerant thereto; a bypass duct fluidly interconnected between said inlet chamber and a compressor inlet; and a valve disposed within said bypass duct and operable to permit the flow of refrigerant vapor to said compressor but not to permit the flow of liquid refrigerant thereto.
2. A liquid-vapor separator as set forth in claim 1 wherein said inlet chamber is connected to the expansion device by an inlet line and further wherein said inlet line is connected to said inlet chamber at an upper portion thereof.
3. A liquid-vapor separator as set forth in claim 2 wherein said inlet chamber is so constructed as to permit the flow of liquid refrigerant to said inlet manifold but the presence of liquid refrigerant in said inlet chamber prevents the flow of refrigerant vapor to said inlet manifold.
4. A liquid-vapor separator as set forth in claim 1 wherein said valve comprises a float valve.
5. A liquid-vapor separator as set forth in claim 4 wherein said float valve includes an outlet port and float member moveable upwardly to seat against and seal said outlet port.
6. A liquid-vapor separator as set forth in claim 5 wherein said valve further includes an inlet port against which the float member can seat as it moves downwardly to prevent the flow of refrigerant vapor downwardly therethrough. 7 WO 2006/083445 PCT/US2005/047359
7. A liquid-vapor separator as set forth in claim 1 wherein said outlet manifold is fluidly connected to the compressor.
8. A liquid-vapor separator as set forth in claim 1 and including a conduit fluidly interconnecting a downstream end of said inlet manifold to said compressor and a valve disposed within said conduit for removal of any residual vapor from a liquid.
9. A liquid-vapor separator as set forth in claim 8 wherein said valve comprises a float valve with an outlet port and a float member that is upwardly moveable to seat thereagainst.
10. A liquid-vapor separator as set forth in claim 9 wherein said valve includes an inlet port against which the float member can seat.
11. A method of promoting uniform refrigerant flow from an inlet manifold of a heat exchanger to a plurality of parallel minichannels fluidly connected thereto, comprising the steps of: providing an inlet chamber for fluidly interconnecting the inlet manifold to an expansion device adapted to deliver two phase refrigerant thereto; providing a bypass duct for fluidly interconnecting said inlet chamber and a compressor inlet; and providing a valve within said bypass duct so as to permit the flow of refrigerant vapor to said compressor but not permit the flow of liquid refrigerant thereto.
12. A method as set forth in claim 11 including the steps of connecting the expansion device to an upper portion of said inlet chamber by way of an inlet line.
13. A method as set forth in claim 11 wherein said valve comprises a float valve. 8 WO 2006/083445 PCT/US2005/047359
14. A method as set forth in claim 13 wherein said float valve includes an outlet port and float member moveable upwardly to seat against and seal said outlet port.
15. A method as set forth in claim 14 wherein said valve further includes an inlet port against which the float member can seat as it moves downwardly to prevent the flow of refrigerant vapor downwardly therethrough.
16. A method as set forth in claim 15 and including the further step of fluidly connecting said outlet manifold is fluidly connected to the compressor.
17. A method as set forth in claim 11 and including the further step of fluidly interconnecting a downstream end of said inlet manifold to said compressor.
18. A method as set forth in claim 17 and including the further step of providing a valve within said conduit for removal of any residual vapor from a liquid.
19. A method as set forth in claim 18 wherein said valve comprises a float valve with an outlet port and a float member that is upwardly moveable to seat there against.
20. A method as set forth in claim 19 wherein said valve includes an inlet port against which the float member can seat. 9
AU2005326650A 2005-02-02 2005-12-28 Liquid-vapor separator for a minichannel heat exchanger Ceased AU2005326650B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US64943505P 2005-02-02 2005-02-02
US60/649,435 2005-02-02
PCT/US2005/047359 WO2006083445A2 (en) 2005-02-02 2005-12-28 Liquid-vapor separator for a minichannel heat exchanger

Publications (2)

Publication Number Publication Date
AU2005326650A1 true AU2005326650A1 (en) 2006-08-10
AU2005326650B2 AU2005326650B2 (en) 2010-08-26

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AU2005326650A Ceased AU2005326650B2 (en) 2005-02-02 2005-12-28 Liquid-vapor separator for a minichannel heat exchanger

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US (1) US20080104975A1 (en)
EP (1) EP1844271A4 (en)
JP (1) JP2008528939A (en)
KR (1) KR20070091343A (en)
CN (1) CN101111731A (en)
AU (1) AU2005326650B2 (en)
BR (1) BRPI0519906A2 (en)
CA (1) CA2596331A1 (en)
MX (1) MX2007009257A (en)
WO (1) WO2006083445A2 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008064238A1 (en) 2006-11-22 2008-05-29 Johnson Controls Technology Company Multichannel heat exchanger with dissimilar multichannel tubes
WO2008064219A1 (en) 2006-11-22 2008-05-29 Johnson Controls Technology Company Multichannel evaporator with flow mixing manifold
WO2009018150A1 (en) 2007-07-27 2009-02-05 Johnson Controls Technology Company Multichannel heat exchanger
US20090025405A1 (en) 2007-07-27 2009-01-29 Johnson Controls Technology Company Economized Vapor Compression Circuit
EP2313732A4 (en) * 2008-06-10 2014-03-12 Carrier Corp Integrated flow separator and pump-down volume device for use in a heat exchanger
US20130098086A1 (en) * 2011-04-19 2013-04-25 Liebert Corporation Vapor compression cooling system with improved energy efficiency through economization
DE112013004284B4 (en) * 2012-08-30 2022-11-24 Shaoming Yu Microchannel heat exchanger
WO2014186440A2 (en) 2013-05-14 2014-11-20 President And Fellows Of Harvard College Rapid production of droplets
CN103307683B (en) * 2013-07-04 2016-04-13 北京德能恒信科技有限公司 A kind of heat pipe air conditioner all-in-one
EP2910765B1 (en) 2014-02-21 2017-10-25 Rolls-Royce Corporation Single phase micro/mini channel heat exchangers for gas turbine intercooling and corresponding method
US9976785B2 (en) * 2014-05-15 2018-05-22 Lennox Industries Inc. Liquid line charge compensator
US10330358B2 (en) * 2014-05-15 2019-06-25 Lennox Industries Inc. System for refrigerant pressure relief in HVAC systems
US10240837B2 (en) * 2014-07-30 2019-03-26 Mitsubishi Electric Corporation Outdoor unit and refrigeration cycle apparatus
US10184703B2 (en) * 2014-08-19 2019-01-22 Carrier Corporation Multipass microchannel heat exchanger
CN104315763B (en) * 2014-09-26 2016-04-20 烟台冰轮股份有限公司 A kind of liquids recovery apparatus for straight swollen full liquid cooling blower fan
CN106969545A (en) * 2017-05-22 2017-07-21 珠海格力电器股份有限公司 Microchannel heat exchanger and heat pump water heater
US10663199B2 (en) 2018-04-19 2020-05-26 Lennox Industries Inc. Method and apparatus for common manifold charge compensator
US10830514B2 (en) 2018-06-21 2020-11-10 Lennox Industries Inc. Method and apparatus for charge compensator reheat valve
CN108759181A (en) * 2018-07-02 2018-11-06 天津商业大学 Dry type shell and tube evaporator with eddy flow bleed liquid-dividing head
CN108709337A (en) * 2018-07-02 2018-10-26 天津商业大学 Cooling air formula evaporator with eddy flow bleed liquid-dividing head
CN109579370A (en) * 2018-11-29 2019-04-05 天津商业大学 Evaporation equipment
US11254190B2 (en) * 2019-06-18 2022-02-22 Ford Global Technologies, Llc Vapor injection heat pump and control method
CN110411072A (en) * 2019-08-01 2019-11-05 天津商业大学 A kind of micro-channel evaporator refrigeration system with Liquid level split-phase feed flow
US11686513B2 (en) * 2021-02-23 2023-06-27 Johnson Controls Tyco IP Holdings LLP Flash gas bypass systems and methods for an HVAC system
CN113566610A (en) * 2021-07-16 2021-10-29 珠海格力电器股份有限公司 Heat exchanger and air conditioner compression system with same

Family Cites Families (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2097602A (en) * 1936-03-06 1937-11-02 Warren Webster & Co Radiator
US2500688A (en) * 1948-08-24 1950-03-14 Edward P Kellie Refrigerating apparatus
GB771785A (en) * 1955-09-01 1957-04-03 John William Frederick Matthes Improvements in or relating to refrigerating systems
US2921445A (en) * 1956-02-17 1960-01-19 Carrier Corp Centrifugal refrigeration machines
US3645109A (en) * 1970-03-16 1972-02-29 Lester K Quick Refrigeration system with hot gas defrosting
US3766745A (en) * 1970-03-16 1973-10-23 L Quick Refrigeration system with plural evaporator means
JPS49100241U (en) * 1972-12-19 1974-08-29
US3976128A (en) * 1975-06-12 1976-08-24 Ford Motor Company Plate and fin heat exchanger
FR2417732A1 (en) * 1978-02-20 1979-09-14 Cem Comp Electro Mec PROCESS FOR PROVIDING OR REMOVING HEAT TO A CONDENSABLE FLUID
US4277953A (en) * 1979-04-30 1981-07-14 Kramer Daniel E Apparatus and method for distributing volatile refrigerant
US4382468A (en) * 1979-05-17 1983-05-10 Hastwell P J Flat plate heat exchanger modules
US4309987A (en) * 1980-02-14 1982-01-12 H & H Tube & Mfg. Co. Fluid flow assembly for solar heat collectors or radiators
JPS5710063A (en) * 1980-06-20 1982-01-19 Hitachi Ltd Refrigerating plant
DE3311579C2 (en) * 1983-03-30 1985-10-03 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG, 7000 Stuttgart Heat exchanger
JPS60262A (en) * 1983-06-17 1985-01-05 株式会社日立製作所 Refrigeration cycle
DE3413931A1 (en) * 1984-04-13 1985-10-24 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG, 7000 Stuttgart EVAPORATOR, ESPECIALLY FOR AIR CONDITIONING IN MOTOR VEHICLES
JPH02183779A (en) * 1989-01-10 1990-07-18 Nippondenso Co Ltd Evaporator
DE3914773C2 (en) * 1989-05-05 1994-03-03 Mtu Muenchen Gmbh Heat exchanger with at least two header pipes
JPH0391663A (en) * 1989-08-31 1991-04-17 Nippondenso Co Ltd Refrigeration cycling device
US5189885A (en) * 1991-11-08 1993-03-02 H. A. Phillips & Co. Recirculating refrigeration system
FR2690235A1 (en) * 1992-04-16 1993-10-22 Valeo Thermique Moteur Sa Tubular box wall of fluid and method for the manufacture of a heat exchanger by driving of circulation tubes.
JPH05332693A (en) * 1992-06-02 1993-12-14 Showa Alum Corp Heat exchanger
JP3416963B2 (en) * 1992-09-22 2003-06-16 ダイキン工業株式会社 Gas-liquid separator
US5523607A (en) * 1993-04-01 1996-06-04 Consorzio Per La Ricerca Sulla Microelettronica Nel Mezzogiorno Integrated current-limiter device for power MOS transistors
DK0706633T3 (en) * 1993-07-03 1998-09-28 Honeywell Ag Plate heat exchanger with refrigerant distributor
FR2713320B1 (en) * 1993-12-02 1996-02-02 Mc International Process for continuous control and defrosting of a refrigeration exchanger and installation equipped with such an exchanger.
JP3122578B2 (en) * 1994-06-23 2001-01-09 シャープ株式会社 Heat exchanger
JP3216960B2 (en) * 1994-09-19 2001-10-09 株式会社日立製作所 Outdoor unit and indoor unit of air conditioner and refrigerant distributor used for them
JPH08189725A (en) * 1995-01-05 1996-07-23 Nippondenso Co Ltd Refrigerant evaporator
US5806585A (en) * 1995-02-27 1998-09-15 Mitsubishi Denki Kabushiki Kaisha Heat exchanger, refrigeration system, air conditioner, and method and apparatus for fabricating heat exchanger
US5615075A (en) * 1995-05-30 1997-03-25 General Electric Company AC/DC current sensor for a circuit breaker
JP3705859B2 (en) * 1996-03-29 2005-10-12 サンデン株式会社 Heat exchanger with distribution device
KR0165067B1 (en) * 1996-04-09 1999-01-15 구자홍 2-row flat type heat exchanger
JPH1089883A (en) * 1996-09-17 1998-04-10 Zexel Corp Header pipe for heat exchanger and manufacturing device therefor
US5881456A (en) * 1997-03-20 1999-03-16 Arup Alu-Rohr Und Profil Gmbh Header tubes for heat exchangers and the methods used for their manufacture
US5765393A (en) * 1997-05-28 1998-06-16 White Consolidated Industries, Inc. Capillary tube incorporated into last pass of condenser
US5941303A (en) * 1997-11-04 1999-08-24 Thermal Components Extruded manifold with multiple passages and cross-counterflow heat exchanger incorporating same
US6179051B1 (en) * 1997-12-24 2001-01-30 Delaware Capital Formation, Inc. Distributor for plate heat exchangers
CA2245082C (en) * 1998-08-14 2001-02-06 Gerald Francis Gallant Float activated shutoff valve
DE19918616C2 (en) * 1998-10-27 2001-10-31 Valeo Klimatechnik Gmbh Condenser for condensing the internal refrigerant of an automotive air conditioning system
FR2786259B1 (en) * 1998-11-20 2001-02-02 Valeo Thermique Moteur Sa COMBINED HEAT EXCHANGER, PARTICULARLY FOR A MOTOR VEHICLE
US6155075A (en) * 1999-03-18 2000-12-05 Lennox Manufacturing Inc. Evaporator with enhanced refrigerant distribution
JP2000283607A (en) * 1999-03-29 2000-10-13 Shimadzu Corp Cooling apparatus
JP2000304465A (en) * 1999-04-15 2000-11-02 Tlv Co Ltd Heat exchanger
US6988539B2 (en) * 2000-01-07 2006-01-24 Zexel Valeo Climate Control Corporation Heat exchanger
JP2002031436A (en) * 2000-05-09 2002-01-31 Sanden Corp Sub-cooling type condenser
JP2002130985A (en) * 2000-10-18 2002-05-09 Mitsubishi Heavy Ind Ltd Heat exchanger
JP2002130988A (en) * 2000-10-20 2002-05-09 Mitsubishi Heavy Ind Ltd Laminated heat-exchanger
US6729386B1 (en) * 2001-01-22 2004-05-04 Stanley H. Sather Pulp drier coil with improved header
US7017656B2 (en) * 2001-05-24 2006-03-28 Honeywell International, Inc. Heat exchanger with manifold tubes for stiffening and load bearing
US20030010483A1 (en) * 2001-07-13 2003-01-16 Yasuo Ikezaki Plate type heat exchanger
US20030116310A1 (en) * 2001-12-21 2003-06-26 Wittmann Joseph E. Flat tube heat exchanger core with internal fluid supply and suction lines
CA2381214C (en) * 2002-04-10 2007-06-26 Long Manufacturing Ltd. Heat exchanger inlet tube with flow distributing turbulizer
US6688138B2 (en) * 2002-04-16 2004-02-10 Tecumseh Products Company Heat exchanger having header
US6814136B2 (en) * 2002-08-06 2004-11-09 Visteon Global Technologies, Inc. Perforated tube flow distributor
US6688137B1 (en) * 2002-10-23 2004-02-10 Carrier Corporation Plate heat exchanger with a two-phase flow distributor
EP1548380A3 (en) * 2003-12-22 2006-10-04 Hussmann Corporation Flat-tube evaporator with micro-distributor

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KR20070091343A (en) 2007-09-10
AU2005326650B2 (en) 2010-08-26
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EP1844271A4 (en) 2011-12-28
CN101111731A (en) 2008-01-23
MX2007009257A (en) 2007-09-04
CA2596331A1 (en) 2006-08-10
JP2008528939A (en) 2008-07-31
US20080104975A1 (en) 2008-05-08
WO2006083445A3 (en) 2006-12-21
EP1844271A2 (en) 2007-10-17

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