US20110127015A1 - Microchannel heat exchanger module design to reduce water entrapment - Google Patents
Microchannel heat exchanger module design to reduce water entrapment Download PDFInfo
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- US20110127015A1 US20110127015A1 US13/002,692 US200913002692A US2011127015A1 US 20110127015 A1 US20110127015 A1 US 20110127015A1 US 200913002692 A US200913002692 A US 200913002692A US 2011127015 A1 US2011127015 A1 US 2011127015A1
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- heat exchanger
- heat exchange
- exchange tube
- heat
- fan
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Classifications
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- 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
- F28D1/02—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 heat-exchange conduits immersed in the body of fluid
- F28D1/04—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 heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—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 heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—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 heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05375—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
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- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/003—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing corrosion
-
- 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
- F28D1/02—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 heat-exchange conduits immersed in the body of fluid
- F28D1/0233—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 heat-exchange conduits immersed in the body of fluid with air flow channels
- F28D1/024—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 heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
- F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
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- 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
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
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- 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
- F25B39/00—Evaporators; Condensers
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/007—Condensers
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- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/0073—Gas coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
- F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A microchannel heat exchanger has a core having at least one heat exchange tube bank having a plurality of flow channels with a small hydraulic diameter less than 5 mm. A means is provided to reduce the amount of water retained on the external surfaces of the at least one heat exchange tube bank. These means may utilize the incorporation of a particular routing of refrigerant within the heat exchanger, the operation and control of a fan associated with the heat exchanger, or the provision of structure to at least partially block liquid from reaching the heat exchanger tube bank.
Description
- This application claims priority to U.S. Provisional Application No. 61/095,019, which was filed Sep. 8, 2008.
- In recent years, much interest and design effort has been focused on efficient and durable operation of the heat exchangers in refrigerant systems. Sustained high effectiveness of refrigerant system heat exchangers directly translates into the augmented system performance and reduced life-time cost. One relatively recent advancement in heat exchanger technology is the development and application of parallel flow, or so-called microchannel or minichannel, heat exchangers (these two terms will be used interchangeably throughout the text), as the indoor and outdoor heat exchangers.
- These parallel flow heat exchangers are provided with a plurality of parallel heat exchange tubes, typically of a non-round shape, among which refrigerant is distributed and flown in a parallel manner. The heat exchange tubes typically incorporate multiple channels and are orientated generally substantially perpendicular to a refrigerant flow direction in the inlet, intermediate and outlet manifolds that are in flow communication with the heat exchange tubes. Heat transfer enhancing fins are typically disposed in between and rigidly attached to the heat exchange tubes. The primary reasons for the employment of the parallel flow heat exchangers, which usually have all-aluminum furnace-brazed construction, are related to their superior performance, high degree of compactness, structural rigidity, reduced refrigerant charge and enhanced resistance to corrosion.
- Microchannel heat exchangers provide beneficial results, at least in part, because their internal flow channels are of quite small hydraulic diameter. However, there are other challenges associated with microchannel heat exchangers. One challenge is that bare outdoor microchannel heat exchangers (as other heat exchanger types) are susceptible to atmospheric corrosion in industrial and coastal corrosive environments, due to the nature of their construction, material system and manufacturing processes.
- In particular, the increased amount of water potentially retained on external heat exchanger surfaces and increased wet time, particularly in coastal corrosive environments, can present corrosion challenges.
- Protective anti-corrosion coatings are known but are expensive. On the other hand, while less expensive coatings may be known, they are less effective. Therefore, it is desired to considerably reduce the amount of water retained on external surfaces of the outdoor heat exchanger (typically condenser or gas cooler), and thus significantly slow down corrosion reaction.
- In a disclosed embodiment of this invention, a microchannel heat exchanger is provided with at least one heat exchange tube bank having a plurality of flow channels with a hydraulic diameter less than 5 mm, and preferably less than 2 mm, and having a means incorporated into the heat exchanger and associated sub-system or structural design to reduce the amount of water retained on the heat exchanger external surfaces.
- The means may utilize the incorporation of a particular routing of refrigerant within the heat exchanger, the operation and control of a fan associated with the heat exchanger, or the provision of structure to at least partially block liquid from reaching the heat exchanger tube bank.
- These and other features of the present invention can be best understood from the following specification and drawings, the following of which is a brief description.
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FIG. 1A shows a prior art arrangement of a microchannel heat exchanger. -
FIG. 1B schematically shows one example of known heat exchanger. -
FIG. 1C is a cross-sectional view through a tube bank. -
FIG. 2 shows a first embodiment of the invention. -
FIG. 3 shows a second embodiment of the invention. -
FIG. 4 shows a third embodiment of the invention. -
FIG. 5 shows yet another embodiment of the invention. -
FIG. 6A shows another embodiment of the invention. -
FIG. 6B shows a side view of a portion of theFIG. 6A embodiment. -
FIG. 6C is a top view of a portion of theFIG. 6A embodiment. - A typical microchannel heat exchanger
outdoor module 20 is illustrated inFIG. 1A . Anupper deck 22 includes afan system 24 for moving (typically pulling) air over a pair ofmicrochannel heat exchangers outdoor module 20 will tend to collect near alower portion 128 of this heat exchanger arrangement. Furthermore, moisture present in the atmospheric air, particularly in humid environments, will also accumulate on external heat exchanger surfaces. Due to the close-coupled construction of the microchannel heat exchanger, this moisture is retained within the heat exchanger core for prolonged periods of time. It should be noted that theoutdoor module 20 shown inFIG. 1A is exemplary, and there many design variations of the outdoor module arrangements, including (but not limited to) vertical and V-shaped as well as straight and formed heat exchangers. All these designs and constructions are within the scope and can benefit from the invention. - As shown in
FIG. 1B , themicrochannel heat exchanger 26 includes aninlet 21 fluidly connected and delivering refrigerant to atop chamber 23 of an inlet/outlet manifold 28. After leaving thetop chamber 23 of themanifold 28, refrigerant passes into a first heatexchange tube bank 25 and to atop chamber 27 of an opposedintermediate manifold 29. From thetop chamber 27 of themanifold 29, the refrigerant returns through a second heatexchange tube bank 11 to an intermediate chamber 13 of themanifold 28. From the intermediate chamber 13 of themanifold 28, refrigerant passes through a third heatexchange tube bank 15 back to abottom chamber 17 of theintermediate manifold 29. From thebottom chamber 17 of themanifold 29, the refrigerant passes through yet another forth heatexchange tube bank 19 to anoutlet chamber 16 of themanifold 28. As shown,divider plates 43 dividemanifolds chambers fins 18 are positioned between the heatexchange tube banks - As can be appreciated, in the condenser or gas cooler case, the hottest refrigerant (refrigerant typically leaving the compressor) is at the
inlet 21 and within first heatexchange tube bank 25 of theheat exchanger 26, namely within the top section of themicrochannel heat exchanger 26. As mentioned above, the greatest accumulation of water will be at the lower section of themicrochannel heat exchanger 26. This top-to-bottom refrigerant flow arrangement is typical for microchannel condensers, since condensing refrigerant flow naturally coincides with the direction of gravity. - As shown in
FIG. 1C , the heat exchange tubes of the tube banks include a plurality ofsmall refrigerant channels 100 provided byseparator walls 101. These channels have hydraulic diameter less than 5 mm, and preferably less than 2 mm. The channels can be any number of shapes and the term “diameter” does not imply a circular cross-section. - In
FIG. 2 , anembodiment 32 includes aninlet chamber 30 of an inlet/outlet manifold 180 at a vertically lower position leading to a heatexchange tube bank 40 passing refrigerant to achamber 36 of anintermediate manifold 182. From thechamber 36, refrigerant passes through a heatexchange tube bank 42 to achamber 31 of the inlet/outlet manifold 180, and back through yet another heatexchange tube bank 44 to anotherchamber 37 of theintermediate manifold 182. From thechamber 37, the refrigerant passes through a heatexchange tube bank 46 to anoutlet chamber 33 of the inlet/outlet manifold 180. In theFIG. 2 embodiment, as opposed to theFIG. 1B prior art, theinlet chamber 30 is at a bottom section of themicrochannel heat exchanger 32, providing a much hotter refrigerant to this section than would exist in theoutlet chamber 33 at the heat exchanger exit. - By routing the hottest refrigerant into the
inlet 30 positioned at the lower section of the microchannel heat exchanger, the hotter refrigerant will provide more heat to evaporate moisture retained on the external heat exchanger surfaces of thebottom area 128 ofFIG. 1A , where the most amount of moisture is typically accumulated. Thus, the effect of corrosion at the most susceptible lower heat exchanger tube banks will be greatly reduced. -
FIG. 3 shows anembodiment 60 wherein the inletrefrigerant line 61 is also at the vertically lowermost portion leading into aninlet chamber 62 of an inlet/outlet manifold 190. From theinlet chamber 62, the refrigerant passes through a heatexchange tube bank 64 to achamber 66 in anintermediate manifold 192, a heatexchange tube bank 68, theintermediate chamber 67 of the inlet/outlet manifold 190, and through abranch refrigerant line 70 to anotherintermediate chamber 72 of the same inlet/outlet manifold 190 not adjacent to thechamber 67, leading in turn to a heatexchange tube bank 73. From the heatexchange tube bank 73, the refrigerant passes through yet anotherintermediate chamber 74 of theintermediate manifold 192, the heatexchange tube bank 76, and to the outletrefrigerant line 78. Essentially, this embodiment provides hotter refrigerant at the bottom and top heat exchangertube bank sections exchange tube banks FIG. 3 embodiment is purely exemplary, and other branch line configurations to provide intertwined refrigerant passes (in comparison to conventional staggered refrigerant passes) are also feasible and within the scope of the invention. -
FIG. 4 shows anembodiment 80 wherein therefrigerant inlet line 82 is located within the top section of the microchannel heat exchanger. Refrigerant flow control devices such asvalves tap line 88 to aninjection point 90. If thevalve 86 is open and thevalve 84 is closed, refrigerant will pass normally into aninlet chamber 92 of inlet/outlet manifold 200, a heatexchange tube bank 94, anintermediate chamber 96 of anintermediate manifold 202, back through a heatexchange tube bank 98 to anintermediate chamber 112 of the inlet/outlet manifold 200. From theintermediate chamber 112 refrigerant passes through a heatexchange tube bank 103 to achamber 105 of theintermediate manifold 202, and a heatexchange tube bank 102. From the heatexchange tube bank 102, the refrigerant passes through anoutlet chamber 110 of the inlet/outlet manifold 200 and to an outletrefrigerant line 108. This embodiment will operate as in the prior art ofFIG. 1B . However, either periodically, or when some indication has been received that there is moisture accumulating on the external surfaces of the lower heatexchange tube bank 102, thevalve 86 may be closed or restricted and thevalve 84 opened (partially or fully). Thus, at least a portion of hot refrigerant vapor from the inletrefrigerant line 82 will pass into theinjection point 90. This hot refrigerant will provide additional heat to assist in evaporation of accumulated condensate on the external surfaces of the low heatexchange tube bank 102. Thevalves FIG. 4 embodiment is exemplary, and other refrigerant bypass line configurations to provide a higher temperature refrigerant to the heat exchanger sections with increased amount of accumulated condensate on a periodic basis are also feasible and within the scope of the invention. -
FIG. 5 shows yet another embodiment encapsulating a different way of reducing the condensate amount accumulated on external heat exchanger surfaces of an outdoorheat exchanger module 120. In the outdoorheat exchanger module 120, there aremicrochannel heat exchangers fan 126. Thefan 126 typically operates in a forward direction to pull air over themicrochannel heat exchangers fan orifice 128. However, thefan 126 may be run in reverse to blow air over theheat exchangers heat exchangers 122 and 124 (since airflow and gravity directions are coincidental now). Thefan 126 may be run in reverse either periodically, or, again, when some indication has been received (such as, for instance, increased airside pressure drop) regarding condensate accumulation on external surfaces of theheat exchangers fan 126 is a multi-speed or variable speed fan, then fan speed may be increased to reduce the condensate removal time. Further, if a multi-fan system is associated with the outdoorheat exchanger module 120, the number of operating fans may be increased to shorten the blow-off time as well. It should be pointed out that fan reversed operation can be coincidental with refrigerant system compressor operation, so that hot refrigerant circulating throughout the refrigerant system assists in condensate removal through evaporation, or fan reversals can be executed and controlled independently. - Furthermore, to remove condensate from external surfaces of the
heat exchangers fan system 126 can be turned on periodically, based on a timer or a sensor reading. Additionally, during normal operation, particularly at low ambient temperatures, a number of operational fans can be reduced (e.g. for a multi-fan system), or a speed of a variable speed fan can be reduced, to achieve lower airflow and higher temperature of the refrigerant circulating through theheat exchangers -
FIG. 6A shows anembodiment 129 intended to reduce the likelihood of rain water reaching the heat exchanger cores. Here, anupper deck 131 of the outdoorheat exchanger module 129 is generally solid. Afan orifice 133 receives acap 134.Heat exchangers 130 thus are exposed to sufficiently reduced amount of water, since thecap 134 tends to divert the rain water radially outwardly and away from theheat exchangers 130. As shown inFIG. 6B , thecap 134 may be generally conical but other shapes or configurations (e.g. pyramidal) are also acceptable.FIG. 6C is a top view of thecap 134. Furthermore, thecap 134 may be formed of a wire mesh, perforated plate or the like, with sufficient porosity not to impede airflow provided by afan 136 and small cell size preventing water to drain through thecap 134. On the other hand, thecap 134 may be made of solid material, and the airflow provided by thefan 136 will escape through the gap between thecap 134 and theupper deck 131. - The refrigerant systems that utilize this invention can be used in many different applications, including, but not limited to, air conditioning systems, heat pump systems, marine container units, refrigeration truck-trailer units, and supermarket refrigeration systems. Also, although the invention is described in reference to microchannel heat exchangers and outdoor applications, such as condensers and gas coolers, it can be applicable to other heat exchanger types, such as round tube and plate fin heat exchangers, and indoor applications, such as reheat heat exchangers and evaporators. Furthermore, although the invention is described in reference to slanted heat exchanger configuration with horizontal tube orientation, it can be applied to vertical arrangements with either vertical or horizontal tube orientation.
- Although an embodiment of this invention has been disclosed, a worker of ordinary skill in this art would recognize that certain modifications would come within the scope of this invention. For that reason, the following claims should be studied to determine the true scope and content of this invention.
Claims (15)
1. A microchannel heat exchanger comprising:
a heat exchanger core including at least one heat exchange tube bank with heat exchange tubes in the at least one heat exchange tube bank having a plurality of internal parallel flow channels; and
a means to reduce condensate retention within the heat exchanger core.
2. The heat exchanger as set forth in claim 1 , wherein said means to reduce condensate retention within the heat exchanger core include routing of the refrigerant flowing inside said heat exchange tubes.
3. The heat exchanger as set forth in claim 2 , wherein there are a plurality of said heat exchange tube banks, and refrigerant flows in opposed parallel directions through said plurality of heat exchange tube banks from an inlet manifold, into an intermediate manifold, and from said intermediate manifold to an outlet manifold, said inlet manifold fluidly connected to a first heat exchange tube bank, with both said inlet manifold and said first heat exchange tube bank being located in a bottom section of the heat exchanger to provide a higher temperature refrigerant to the bottom section of the heat exchanger.
4. The heat exchanger as set forth in claim 3 , wherein there are more than two of said heat exchange tube banks, with said first heat exchange tube bank being a vertically lowermost of said heat exchange tube banks, and one of intermediate heat exchange tube banks being a vertically uppermost of said heat exchange tube banks.
5. The heat exchanger as set forth in claim 3 , wherein there are more than two of said heat exchange tube banks, with said heat exchange tube banks being arranged in a vertically intertwined configuration.
6. The heat exchanger as set forth in claim 5 , wherein at least one branch pipe routes refrigerant from one of said heat exchange tube banks to another of said heat exchange tube banks.
7. The heat exchanger as set forth in claim 3 , wherein a flow control device for selectively tapping at least a portion of higher temperature refrigerant from an upstream location to a downstream location to provide additional heating at the downstream location is included.
8. The heat exchanger as set forth in claim 7 , wherein said downstream location is in an intermediate manifold.
9. The heat exchanger as set forth in claim 8 , wherein said intermediate manifold communicates with a vertically lowermost one of said plurality of heat exchange tube banks.
10. The heat exchanger as set forth in claim 1 , wherein there is at least one fan associated with the heat exchanger, said at least one fan being operable to move air over said at least one heat exchange tube bank to absorb heat from refrigerant flowing inside said heat exchange tubes, said at least one fan being selectively operable in a reverse direction to move air over said at least one heat exchange tube bank to remove moisture accumulated on external heat exchanger surfaces.
11. The heat exchanger as set forth in claim 1 , wherein there is at least one fan associated with the heat exchanger, said at least one fan being operable to move air over said at least one heat exchange tube bank to absorb heat from refrigerant flowing inside said heat exchange tubes, said at least one fan is a variable speed fan and said variable speed fan is selectively and periodically operated at a reduced speed to increase temperature of refrigerant flowing through at least one heat exchange tube bank to remove moisture accumulated on external heat exchanger surfaces.
12. The heat exchanger as set forth in claim 1 , wherein there is at least one fan associated with the heat exchanger, said at least one fan being operable to pull air over said at least one heat exchange tube bank to absorb heat from refrigerant flowing inside said heat exchange tubes, said at least one fan to be periodically turned on during prolonged shutdown periods to move air over said at least one heat exchange tube bank to remove moisture accumulated on external heat exchanger surfaces.
13. The heat exchanger as set forth in claim 1 , wherein there are at least two fans associated with the heat exchanger, said at least two fans being operable to move air over said at least one heat exchange tube bank to absorb heat from refrigerant flowing inside said heat exchange tubes, and at least one fan of said at least two fans to be selectively and periodically turned off to increase temperature of refrigerant flowing through at least one heat exchange tube bank to remove moisture accumulated on external heat exchanger surfaces.
14. The heat exchanger as set forth in claim 1 , wherein there is a frame structure associated with the heat exchanger, said frame structure including a generally solid upper deck and a fan mounted to said frame structure and moving air over said at least one heat exchange tube bank through a fan orifice, and a cover for blocking moisture from entering said fan orifice.
15. The heat exchanger as set forth in claim 14 , wherein said cover includes a wire mesh material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/002,692 US20110127015A1 (en) | 2008-09-08 | 2009-04-24 | Microchannel heat exchanger module design to reduce water entrapment |
Applications Claiming Priority (3)
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US9501908P | 2008-09-08 | 2008-09-08 | |
US13/002,692 US20110127015A1 (en) | 2008-09-08 | 2009-04-24 | Microchannel heat exchanger module design to reduce water entrapment |
PCT/US2009/041624 WO2010027533A1 (en) | 2008-09-08 | 2009-04-24 | Microchannel heat exchanger module design to reduce water entrapment |
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US20110127015A1 true US20110127015A1 (en) | 2011-06-02 |
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US13/002,692 Abandoned US20110127015A1 (en) | 2008-09-08 | 2009-04-24 | Microchannel heat exchanger module design to reduce water entrapment |
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US (1) | US20110127015A1 (en) |
EP (1) | EP2321608A4 (en) |
CN (1) | CN102150001B (en) |
WO (1) | WO2010027533A1 (en) |
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US20110094219A1 (en) * | 2009-10-27 | 2011-04-28 | Ford Global Technologies, Llc | Condensation trap for charge air cooler |
US20130048260A1 (en) * | 2010-04-28 | 2013-02-28 | Yuuichi Matsumoto | Vehicle Interior Heat Exchanger |
US8739855B2 (en) | 2012-02-17 | 2014-06-03 | Hussmann Corporation | Microchannel heat exchanger |
US20160061497A1 (en) * | 2013-11-01 | 2016-03-03 | Delphi Technologies, Inc. | Two-pass evaporator |
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US20190162455A1 (en) * | 2017-11-29 | 2019-05-30 | Lennox Industries, Inc. | Microchannel heat exchanger |
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JP2013113480A (en) * | 2011-11-28 | 2013-06-10 | Kobe Steel Ltd | Heat pump apparatus |
CN103673657B (en) * | 2012-12-29 | 2015-09-16 | 摩尔动力(北京)技术股份有限公司 | Hui Leng keeps away white cooling unit |
CN113701404B (en) * | 2021-08-20 | 2022-11-01 | 广东工业大学 | Evaporator |
Citations (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2162148A (en) * | 1938-08-31 | 1939-06-13 | Wilson Engineering Corp | Air compression system of variable radiation capacity |
US3707185A (en) * | 1971-03-25 | 1972-12-26 | Modine Mfg Co | Modular air cooled condenser |
US3800861A (en) * | 1969-12-05 | 1974-04-02 | Gen Electric | Air cooled vapor condenser module |
US3991819A (en) * | 1973-04-11 | 1976-11-16 | Sealed Motor Construction Co. Ltd. | Air conditioning device |
US4573327A (en) * | 1984-09-21 | 1986-03-04 | Robert Cochran | Fluid flow control system |
US4763726A (en) * | 1984-08-16 | 1988-08-16 | Sunstrand Heat Transfer, Inc. | Heat exchanger core and heat exchanger employing the same |
US5222550A (en) * | 1992-05-28 | 1993-06-29 | Carrier Corporation | Offset cooling coil fin |
US5586865A (en) * | 1996-03-08 | 1996-12-24 | Micronics Computers Inc. | Fan with transition chamber for providing enhanced convective flow |
US5729999A (en) * | 1995-09-22 | 1998-03-24 | Gas Research Institute | Helical absorber construction |
US5966946A (en) * | 1998-06-08 | 1999-10-19 | Praxair Technology, Inc. | Method and apparatus for retention of a refrigerant fluid in a refrigeration enclosure |
US20040020230A1 (en) * | 2001-07-02 | 2004-02-05 | Osamu Kuwabara | Heat pump |
US20050284174A1 (en) * | 2004-06-24 | 2005-12-29 | Hidemichi Nakajima | Cooling cycle apparatus and method of operating the same |
US6993918B1 (en) * | 2004-02-12 | 2006-02-07 | Advanced Thermal Sciences | Thermal control systems for process tools requiring operation over wide temperature ranges |
US7024878B2 (en) * | 2001-03-06 | 2006-04-11 | True Manufacturing Co., Inc. | Cleaning system for refrigerator condenser |
US7043930B2 (en) * | 2004-01-30 | 2006-05-16 | Carrier Corporation | Two phase or subcooling reheat system |
WO2006083484A1 (en) * | 2005-02-02 | 2006-08-10 | Carrier Corporation | Parallel flow heat exchanger for heat pump applications |
US7134290B2 (en) * | 2004-07-16 | 2006-11-14 | Carrier Corporation | Phase correction method and apparatus |
US7231774B2 (en) * | 2004-04-28 | 2007-06-19 | Carrier Corporation | Multi-circuit refrigerant cycle with dehumidification improvements |
US7257957B2 (en) * | 2004-10-12 | 2007-08-21 | Carrier Corporation | Utilization of bypass refrigerant to provide reheat and dehumidification function in refrigerant system |
US7318710B2 (en) * | 2005-03-30 | 2008-01-15 | Lg Electronics Inc. | Fixed scroll of scroll compressor |
US20080023182A1 (en) * | 2006-07-25 | 2008-01-31 | Henry Earl Beamer | Dual mode heat exchanger assembly |
US20080029250A1 (en) * | 2006-06-01 | 2008-02-07 | Andrew Carlson | Warm Water Cooling |
US20100095688A1 (en) * | 2006-12-15 | 2010-04-22 | Taras Michael F | Refrigerant distribution improvement in parallell flow heat exchanger manifolds |
US20100139313A1 (en) * | 2006-12-15 | 2010-06-10 | Taras Michael F | Refrigerant vapor injection for distribution improvement in parallel flow heat exchanger manifolds |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19709176C2 (en) * | 1997-03-06 | 1999-07-29 | Juergen Lessing | Finned heat exchanger |
JP3918284B2 (en) * | 1998-02-26 | 2007-05-23 | ダイキン工業株式会社 | Cross fin tube heat exchanger |
JP3761833B2 (en) * | 2002-04-09 | 2006-03-29 | 三菱電機株式会社 | Heat exchanger |
US20060191677A1 (en) * | 2002-05-10 | 2006-08-31 | Viczena George S | Control of air conditioning cooling or heating coil |
CN1566890A (en) * | 2003-06-23 | 2005-01-19 | 乐金电子(天津)电器有限公司 | Drainage arrangement for AC heat exchanger |
JP2005300103A (en) * | 2004-04-15 | 2005-10-27 | Toyota Industries Corp | Heat exchanger |
ATE487106T1 (en) * | 2005-02-02 | 2010-11-15 | Carrier Corp | PULSE WIDTH MODULATION OR VARIABLE SPEED CONTROL FOR FANS IN COOLANT SYSTEMS |
WO2008042368A1 (en) * | 2006-09-28 | 2008-04-10 | Johnson Controls Technology Company | Microchannel heat exchanger |
-
2009
- 2009-04-24 EP EP09811874A patent/EP2321608A4/en not_active Withdrawn
- 2009-04-24 WO PCT/US2009/041624 patent/WO2010027533A1/en active Application Filing
- 2009-04-24 CN CN200980134996.2A patent/CN102150001B/en not_active Expired - Fee Related
- 2009-04-24 US US13/002,692 patent/US20110127015A1/en not_active Abandoned
Patent Citations (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2162148A (en) * | 1938-08-31 | 1939-06-13 | Wilson Engineering Corp | Air compression system of variable radiation capacity |
US3800861A (en) * | 1969-12-05 | 1974-04-02 | Gen Electric | Air cooled vapor condenser module |
US3707185A (en) * | 1971-03-25 | 1972-12-26 | Modine Mfg Co | Modular air cooled condenser |
US3991819A (en) * | 1973-04-11 | 1976-11-16 | Sealed Motor Construction Co. Ltd. | Air conditioning device |
US4763726A (en) * | 1984-08-16 | 1988-08-16 | Sunstrand Heat Transfer, Inc. | Heat exchanger core and heat exchanger employing the same |
US4573327A (en) * | 1984-09-21 | 1986-03-04 | Robert Cochran | Fluid flow control system |
US5222550A (en) * | 1992-05-28 | 1993-06-29 | Carrier Corporation | Offset cooling coil fin |
US5729999A (en) * | 1995-09-22 | 1998-03-24 | Gas Research Institute | Helical absorber construction |
US5586865A (en) * | 1996-03-08 | 1996-12-24 | Micronics Computers Inc. | Fan with transition chamber for providing enhanced convective flow |
US5966946A (en) * | 1998-06-08 | 1999-10-19 | Praxair Technology, Inc. | Method and apparatus for retention of a refrigerant fluid in a refrigeration enclosure |
US7024878B2 (en) * | 2001-03-06 | 2006-04-11 | True Manufacturing Co., Inc. | Cleaning system for refrigerator condenser |
US20040020230A1 (en) * | 2001-07-02 | 2004-02-05 | Osamu Kuwabara | Heat pump |
US7043930B2 (en) * | 2004-01-30 | 2006-05-16 | Carrier Corporation | Two phase or subcooling reheat system |
US6993918B1 (en) * | 2004-02-12 | 2006-02-07 | Advanced Thermal Sciences | Thermal control systems for process tools requiring operation over wide temperature ranges |
US7231774B2 (en) * | 2004-04-28 | 2007-06-19 | Carrier Corporation | Multi-circuit refrigerant cycle with dehumidification improvements |
US20050284174A1 (en) * | 2004-06-24 | 2005-12-29 | Hidemichi Nakajima | Cooling cycle apparatus and method of operating the same |
US7134290B2 (en) * | 2004-07-16 | 2006-11-14 | Carrier Corporation | Phase correction method and apparatus |
US7257957B2 (en) * | 2004-10-12 | 2007-08-21 | Carrier Corporation | Utilization of bypass refrigerant to provide reheat and dehumidification function in refrigerant system |
WO2006083484A1 (en) * | 2005-02-02 | 2006-08-10 | Carrier Corporation | Parallel flow heat exchanger for heat pump applications |
US8235101B2 (en) * | 2005-02-02 | 2012-08-07 | Carrier Corporation | Parallel flow heat exchanger for heat pump applications |
US7318710B2 (en) * | 2005-03-30 | 2008-01-15 | Lg Electronics Inc. | Fixed scroll of scroll compressor |
US20080029250A1 (en) * | 2006-06-01 | 2008-02-07 | Andrew Carlson | Warm Water Cooling |
US20080023182A1 (en) * | 2006-07-25 | 2008-01-31 | Henry Earl Beamer | Dual mode heat exchanger assembly |
US20100095688A1 (en) * | 2006-12-15 | 2010-04-22 | Taras Michael F | Refrigerant distribution improvement in parallell flow heat exchanger manifolds |
US20100139313A1 (en) * | 2006-12-15 | 2010-06-10 | Taras Michael F | Refrigerant vapor injection for distribution improvement in parallel flow heat exchanger manifolds |
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US9010112B2 (en) * | 2009-10-27 | 2015-04-21 | Ford Global Technologies, Llc | Condensation trap for charge air cooler |
US20110094219A1 (en) * | 2009-10-27 | 2011-04-28 | Ford Global Technologies, Llc | Condensation trap for charge air cooler |
US20130048260A1 (en) * | 2010-04-28 | 2013-02-28 | Yuuichi Matsumoto | Vehicle Interior Heat Exchanger |
US8739855B2 (en) | 2012-02-17 | 2014-06-03 | Hussmann Corporation | Microchannel heat exchanger |
US10132538B2 (en) | 2012-05-25 | 2018-11-20 | Hussmann Corporation | Heat exchanger with integrated subcooler |
US10048025B2 (en) | 2013-01-25 | 2018-08-14 | Trane International Inc. | Capacity modulating an expansion device of a HVAC system |
US10746482B2 (en) * | 2013-01-25 | 2020-08-18 | Trane International Inc. | Capacity modulating an expansion device of a HVAC system |
US20160061497A1 (en) * | 2013-11-01 | 2016-03-03 | Delphi Technologies, Inc. | Two-pass evaporator |
US20190000109A1 (en) * | 2015-09-09 | 2019-01-03 | Taylor Commercial Foodservice Inc. | Frozen beverage machine valving |
US10555545B2 (en) * | 2015-09-09 | 2020-02-11 | Taylor Commercial Foodservice Inc. | Frozen beverage machine valving |
JP2016053473A (en) * | 2016-01-22 | 2016-04-14 | 三菱電機株式会社 | Heat exchanger and refrigeration cycle device |
US20180340738A1 (en) * | 2017-05-26 | 2018-11-29 | Alliance For Sustainable Energy, Llc | Systems with multi-circuited, phase-change composite heat exchangers |
US10648743B2 (en) * | 2017-05-26 | 2020-05-12 | Alliance For Sustainable Energy, Llc | Systems with multi-circuited, phase-change composite heat exchangers |
US11598536B2 (en) | 2017-05-26 | 2023-03-07 | Alliance For Sustainable Energy, Llc | Systems with multi-circuited, phase-change composite heat exchangers |
CN107192174A (en) * | 2017-06-06 | 2017-09-22 | 安徽春辉仪表线缆集团有限公司 | It is a kind of quick from defrosting finned evaporator |
US20190162455A1 (en) * | 2017-11-29 | 2019-05-30 | Lennox Industries, Inc. | Microchannel heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
CN102150001A (en) | 2011-08-10 |
WO2010027533A1 (en) | 2010-03-11 |
EP2321608A4 (en) | 2013-03-06 |
EP2321608A1 (en) | 2011-05-18 |
CN102150001B (en) | 2014-04-09 |
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