CN102378892A - Multi-circuit heat exchanger - Google Patents
Multi-circuit heat exchanger Download PDFInfo
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- CN102378892A CN102378892A CN2010800152235A CN201080015223A CN102378892A CN 102378892 A CN102378892 A CN 102378892A CN 2010800152235 A CN2010800152235 A CN 2010800152235A CN 201080015223 A CN201080015223 A CN 201080015223A CN 102378892 A CN102378892 A CN 102378892A
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- chamber
- heat exchanger
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- heat
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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
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
- F28D1/0443—Combination of units extending one beside or one above the other
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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
- F25B39/04—Condensers
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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
- F25B2400/00—General 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
- F25B2400/06—Several compression cycles arranged in parallel
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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
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
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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
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage
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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
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
- F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
Abstract
A baffle assembly is disposed within a manifold of a multi-circuit heat exchanger for dividing the interior volume of that manifold into a first chamber associated with one circuit and a second chamber associated with another circuit. The baffle assembly includes a pair of baffle members that extend generally transversely across the interior volume of the manifold are disposed in spaced apart relationship thereby forming a void space therebetween. The void space is in fluid communication with a region exterior of that manifold whereby any fluid leaking from either of the first or second chamber into the void space will be vented therefrom.
Description
The cross reference of related application
The application with reference to and to require application number be No.61/166; 433, the applying date is that U.S. Provisional Application and application number that April 3 in 2009, day, were called " multiloop heat exchanger " are No.61/168; 341, the applying date be April 10 in 2009 day, be called the U.S. Provisional Application No. of " multiloop heat exchanger ", the application is all incorporated in these applications by reference into.
Technical field
The present invention relates in general to refrigerant vapor compression system; Relate more particularly to be used in the concurrent flow multiloop pipe heat exchanger in the multiple-loop refrigeration agent vapor compression system, and relate more particularly to be suitable for preventing the concurrent flow multiloop pipe heat exchanger of the cross pollution between the loop in the heat exchanger.
Background technology
Refrigerant vapor compression system is known in the prior art.Adopt the air-conditioning and the heat pump of refrigerant vapor compression cycle generally to be used for cooling or cooling air, this air is supplied to the climate controlled zone of comfort in dwelling house, office building, hospital, school, restaurant or other facilities.Refrigerant vapor compression system generally also is used to cool off air or other assist mediums for example water or ethylene glycol solution, thinks that showcase, bottle cooling device or other similar equipment in supermarket, convenience store, grocery store, cafeteria, restaurant and other food service mechanisms are provided for the refrigerating environment of Food & Drink product.
These systems form refrigerant loop usually; This refrigerant loop comprises compressor, condenser, expansion gear and evaporimeter, and they are arranged by the refrigerant vapor compression cycle that mode connects and basis is just adopting of the refrigerant line in the refrigerant loop of sealing with refrigerant flow communication.Expansion gear generally is expansion valve or fixing hole metering device, and for example orifice plate or capillary with respect to cold-producing medium stream, are arranged on the upper reaches of evaporimeter in the refrigerant loop and the downstream of condenser.The expansion gear running is arrived lower pressure and temperature with expansion flow through the liquid refrigerant of the refrigerant line of connection condenser to evaporimeter.Refrigerant vapor compression system can inject any kind of cold-producing medium, comprises like R-12, R-22, R-134a, R-404A, R-410A, R-407C, R717, R744 or other compressible fluids.
Be in operation, it is outside to be positioned at the climate controlled space as the fan that is associated with condenser, one of which, make ambient temperature air from external environment condition through condenser to carry out heat exchange with hot refrigerant vapor refrigerant from compressor discharge.When surrounding air and hot refrigerant vapor refrigerant heat transfer process, refrigerant vapour is cooled and is condensed to liquid state, and surrounding air is heated and be discharged and get back in the atmosphere.The fan circulation that is associated with evaporimeter is from the air to be regulated of climate controlled environment, and makes this room air, with various mixed fresh air outside arranged usually, through evaporimeter.When this air out-of-date from the steamer upper reaches, this air with through heat exchanger, normally the cold-producing medium of inner tube or passage interacts and carries out heat exchange.As a result, in cooling mode of operation, air is cooled, and is dehumidified usually.
Provide and regulate air and generally include a plurality of independently refrigerant loops but not the unitary system refrigerant circuit, to provide enough ability to satisfy required cooling requirement and/or to serve a plurality of isolated areas in the climate controlled space to the air-conditioning system of large space such as office building, hospital, school, restaurant or other commercial undertakings.In some multiple-loop refrigeration agent vapor compression systems, the heat exchanger that forms condenser is the multiloop heat exchanger with a plurality of refrigerant pipes that between first collector and second collector, extend with parallel relation.For example, in the refrigeration system of double loop, in parallel-flow heat exchanger, at least one in the collector is subdivided into first chamber and second chamber through dividing plate.First group of fluid of a plurality of parallel refrigerant pipes is connected between the first separately of first and second collectors with being communicated with, and this first separately is connected in first refrigerant loop of refrigeration system.Second group of fluid of a plurality of parallel refrigerant pipes is connected between the second portion separately of first and second collectors with being communicated with, and this second portion separately is connected in second refrigerant loop of refrigeration system.
Separate the mobile containment member of dividing plate formation and be arranged in the internal capacity that is limited in the collector and extend to prevent that cold-producing medium from flowing between first and second chambeies of the opposite side that is arranged on dividing plate with the cross section that crosses this internal capacity.Cold-producing medium from first and second chambeies flow to another and does not expect.If cold-producing medium will flow between first and second chambeies; For example through the leakage in dividing plate; Because cold-producing medium flows to another refrigerant loop from a refrigerant loop with oil; With the cross pollution that independent cooling agent loop takes place, will cause like this performance reduction, lubricating oil loss and possibly damage one or whole two compressors.
Summary of the invention
In one aspect of the invention; A kind of method that is used for preventing fluid cross pollution between the independent heat-exchanging loop of multiloop heat exchanger is provided; The multiloop heat transfer equipment has the common header that limits internal capacity, this internal capacity have first chamber related with first heat-exchanging loop and with the second related chamber of second heat-exchanging loop.Method may further comprise the steps: the empty space of foundation in the internal capacity of common header between within it second chamber of first chamber and Qi Nei; And between the outside zone of the space of sky and common header, passing away is provided.
In one aspect of the invention, a kind of multiloop heat exchanger that prevents to leak from the independently fluid between the heat-exchanging loop of shared common header the cross pollution that causes is provided.In one embodiment of the invention; The multiloop heat exchanger comprises first and second collectors of isolated and longitudinal extension; A plurality of being arranged in parallel and the heat exchanger tube of horizontal expansion between first collector and second collector and be arranged on the baffle assembly in first and second collectors.Each heat exchanger tube limits at least one fluid passage between first collector and second collector.Second group of limiting first heat-exchanging loop and a plurality of heat exchanger tubes of first group of a plurality of heat exchanger tubes limits second heat-exchanging loop.Baffle assembly is arranged at least one in first and second collectors to be used for that the internal capacity of collector is divided into first chamber and second chamber.Baffle assembly comprises the first-class movable sealing member and the second mobile containment member.Each partition component crosses the internal capacity horizontal expansion of collector basically., first partition component and second partition member form empty space in the internal capacity of the collector between first partition component and second partition member thereby being arranged to keep at a certain distance away.The outside zone of empty space fluid connected set pipe will be discharged from any fluid that any chamber leaks into the empty space thus therefrom.
In one aspect of the invention; A kind of method that is used to protect the refrigeration system with a plurality of independently refrigerant loops is provided; Said a plurality of independently refrigerant loop has public multiloop heat exchanger; Comprise having and be used for circulating refrigerant and be used for second refrigerant loop of circulating refrigerant with having with second compressor of second heat-exchanging loop through this heat exchanger with first refrigerant loop of first compressor of first heat-exchanging loop through this heat exchanger; This heat transfer equipment has the common header that limits internal capacity, this internal capacity have first chamber related with first heat-exchanging loop and with the second related chamber of second heat-exchanging loop.Method may further comprise the steps: therein the empty space of first chamber and the foundation between second chamber wherein in the internal capacity of common header; Discharging maybe be from first chamber or second chamber leak into empty space cold-producing medium to the outside zone of common header; The refrigerant pressure of each in sensing first refrigerant loop and second refrigerant loop; If the refrigerant pressure that senses in first refrigerant loop drops to the low pressure limit that is lower than regulation, then stop the running of first compressor; And if the refrigerant pressure that senses in second refrigerant loop drops to the low pressure limit that is lower than regulation, then stop the running of second compressor.
Description of drawings
In order further to understand the application, will carry out following detailed explanation with reference to accompanying drawing, wherein:
Fig. 1 is the sketch map that the exemplary embodiments of the multiple-loop refrigeration agent vapor compression system with multiloop parallel-flow heat exchanger is described;
Fig. 2 is the side elevation view of explanation according to the partial cross section of the exemplary embodiments of the parallel pipe heat exchanger of multiloop of the present invention;
Fig. 3 illustrates the cross section side elevation view of the baffle assembly in the collector that is arranged in the heat exchanger shown in Figure 2; With
Fig. 4 illustrates the cross section side elevation view that the heat exchanger tube in the heat exchanger shown in Figure 2 is connected with collector; With
Fig. 5 is the side elevation view of explanation according to the partial cross section of another exemplary embodiments of the parallel pipe heat exchanger of multiloop of the present invention.
The specific embodiment
Initial Fig. 1 with reference to accompanying drawing; The exemplary embodiments of multiple-loop refrigeration agent vapor compression system 10 is described here; It comprises two independent refrigerant loops 20,30; Each refrigerant loop is independent of the operation of another refrigerant loop ground under the indication of system controller (not shown), to be adjusted in the air in the individual region that weather receives absolutely empty.Refrigerant vapor compression system 10 comprises the double loop heat exchanger 40 with first heat-exchanging loop 42 and second heat-exchanging loop 44; 42 of first heat-exchanging loops are established (interdisposed) in first refrigerant loop 20, and 44 of second heat-exchanging loops are located in second refrigerant loop 30.First refrigerant loop 20 further comprises refrigerant vapor compression machine 22, expansion gear 24 and evaporimeter 26, and they are connected in the closed-loop refrigerant circuits that is formed by refrigerant line 21,23 and 25 with first heat-exchanging loop 42 of heat exchanger 40.Second refrigerant loop 30 further comprises refrigerant vapor compression machine 32, expansion gear 34 and evaporimeter 36, and they are connected in the closed-loop refrigerant circuits that is formed by refrigerant line 31,33 and 35 with second heat-exchanging loop 44 of heat exchanger 40.Though first and second refrigerant loops illustrated in fig. 1,20,30 each air conditioning that all are constructed to simplify circulate; But it is understandable that the multiloop heat exchanger of describing can be applied to the refrigerant vapor compression system of various designs here; Including, but not limited to heat pump cycle; Economic cold-producing medium circulation; Comprise the circulation of various selections and characteristic with many other, and also can be used in the application beyond the air conditioning, including, but not limited to cooling like refrigeration application and water or other fluids.
That first and second refrigerant loops 20,30 comprise respectively is independent, independent heat-exchanging loop 42,44 and operation independently of one another.In service at first refrigerant loop 20; Compressor 22 is discharged the high-pressure refrigerant vapor of heat to get into and to pass subsequently first heat-exchanging loop 42 of heat exchanger 40 through refrigerant emission pipeline 21; In heat exchanger heat refrigerant vapour gone overheated; Be condensed to liquid state and cold by excessively usually when it and heat exchange; Cooling fluid is generally the surrounding air from the outside in climate controlled space, and cooling fluid is by transmitting with the operationally related condenser fan 46 of first heat-exchanger circuit 42, and the cold-producing medium of crossing first heat-exchanger circuit 42 transmits heat exchanger tube.Similarly; In service at second refrigerant loop 30; Compressor 32 is discharged heat through refrigerant emission pipeline 31, and high-pressure refrigerant vapor to be getting into and to pass subsequently second heat-exchanging loop 44 of heat exchanger 40, in heat exchanger the refrigerant vapour of heat gone overheated; Be condensed to liquid state and cold by excessively usually when it and heat exchange; Cooling fluid is generally the surrounding air from the outside in climate controlled space, and cooling fluid is by transmitting with the operationally related condenser fan 48 of second heat-exchanger circuit 44, and the cold-producing medium of crossing second heat-exchanger circuit 44 transmits heat exchanger tube.
The high pressure liquid refrigerant that leaves first heat-exchanger circuit 42 of heat exchanger 40 passes refrigerant line 23, passes expansion gear 24, flows to evaporator heat exchanger 26, and cold-producing medium is expanded to low pressure and low temperature to form the refrigerant liquid gas mixture in expansion gear.After this cold-producing medium after the expansion of low pressure and low temperature passes the heat exchanger tube of evaporator heat exchanger 26; Wherein work as cold-producing medium and wait to be cooled (and; In many cases; By dehumidifying) air heat exchange ground when flowing through this cold-producing medium be evaporated and normally by overheated, the evaporator fan 28 that said air is operably connected to evaporator heat exchanger 26 drives from the heat exchanger tube of evaporator heat exchanger 26 and passes through.The cold-producing medium that leaves evaporator heat exchanger 26 returns compressor 22 through sucking refrigerant line 25 from the inhalation port of compressor.
The high pressure liquid refrigerant that leaves second heat-exchanger circuit 44 of heat exchanger 40 passes refrigerant line 33, through expansion gear 34, flows to evaporator heat exchanger 36, and cold-producing medium is expanded to low pressure and low temperature to form the refrigerant liquid gas mixture in expansion gear.After this cold-producing medium after the expansion of low pressure and low temperature passes the heat exchanger tube of evaporator heat exchanger 36; Wherein work as cold-producing medium and wait to be cooled (and; In many cases; By dehumidifying) air heat exchange ground when flowing through this cold-producing medium be evaporated and normally by overheated, the evaporator fan 38 that said air is operably connected to evaporator heat exchanger 36 drives from the heat exchanger tube of evaporator heat exchanger 36 and passes through.The cold-producing medium that leaves evaporator heat exchanger 36 returns compressor 32 through sucking refrigerant line 35 from the inhalation port of compressor.
The whole here illustrative example with reference to the double loop parallel-flow heat exchanger of in Fig. 2-4, describing will be described multiloop parallel-flow heat exchanger 40.But it is understandable that multiloop heat exchanger 40 can comprise the heat-exchanging loop more than two.As describing among Fig. 2; Heat exchanger 40 comprises the heat exchanger tube 70 that a plurality of basic arranged verticals are provided with; Each heat exchanger tube wherein basic vertical be provided with and first collector 50 of longitudinal extension and basic vertical be provided with and second collector 60 of longitudinal extension between; Extend in the horizontal direction along its longitudinal axis, thereby between two collectors, a plurality of refrigerant flowpath are provided.Each collector has constituted the container of axial elongated, closed-end, thereby defines the internal capacity that is used to assemble cold-producing medium.Though first and second collectors 50,60 have cylindrical structure shown in Fig. 2-4, first and second collectors 50,60 can have rectangular cross section, half-cylindrical cross section or other any cross-sectional shape.
Each heat exchanger tube 70 has first end that fluid is communicated with first collector 50, and fluid is communicated with second end of second collector 60.In the exemplary embodiments of describing, preferably see Fig. 4, each heat exchanger tube 70 has the general flat cross section, for example, and rectangular cross section or oval cross section, and its interior detail is divided into the individual flow passage 72 of a plurality of parallel arranged.A plurality of parallel flow channels 72 is vertical; Just; Usually the longitudinal axis along the approximate horizontal setting of managing extends on the whole length of pipe, and each independent flow channel 72 is provided at the flow path of refrigerant flow communication between first collector 50 and second collector 60 thus.Multi-channel tube 70, as microchannel or passage aisle pipe, as shown in Figure 4 also knownly, in order to be easy to describe clearly, have 12 passages 72 with essentially rectangular cross section.Yet, it is understandable that in application each multi-channel tube 70 can have the fluid passage 72 of any requirement and can have circle, rectangle, triangle, oval or trapezoidal cross-section, perhaps other any required non-circular cross sections.The heat exchanger tube 70 that also it is understandable that multiloop heat exchanger 40 can not be flat multi-channel tube also, and can be the common round tube only for an order fluid passage.
For promote from the outer surface of heat exchanger tube 70 air flowing and the cold-producing medium of the concurrent flow passage 72 through heat exchanger tube 70 that flows between the heat transmission, heat exchanger 40 can be included in a plurality of external heat transfer fins 75 of extending between selected many groups parallel tubulation 70.Fin can be that outer surface brazing or that otherwise be attached to contiguous heat exchanger tube 70 securely is to set up heat transfer contact through the heat conduction between the outer surface of fin 75 and heat exchanger tube 70.In the exemplary embodiments of the heat exchanger 40 that Fig. 2 describes, fin 75 is formed the basic hackly structure that is, elongated band-like plate is arranged between the heat exchanger tube 70.Yet, it is understandable that other fins structure as form the ripple of rectangle, triangle or trapezoidal air flow channel snakelike wavy, stagger or the flap type fin, perhaps vertical basically plate also can be used for above-mentioned disclosed parallel-flow heat exchanger.
In the exemplary embodiments that Fig. 2 describes, the internal capacity of first collector 50 is divided into first chamber and second chamber; First chamber further is subdivided into first snout cavity 51 and first outlet plenum 53 through fluid sealed wall 52, and second chamber further is subdivided into second snout cavity 55 and second outlet plenum 57 through fluid sealed wall 56.Second collector is divided into first chamber 61 and second chamber 63 through fluid sealed wall 62.
More than first heat exchanger tube 70 that is arranged in parallel approximate horizontal between first chamber 61 of first snout cavity 51 of first collector 50 and second collector 60 is extended, and more than second heat exchanger tube 70 that is arranged in parallel equally approximate horizontal between first outlet plenum 53 of first chamber 61 of second collector 60 and first collector 50 is extended.First outlet plenum, the 53 order flow arrangement of more than 61, the second heat exchanger tube 70 in first chamber of more than 51, the first heat exchanger tube of first snout cavity 70, the second collectors 60 and first collector 50 are to form first heat-exchanging loop 42.
More than the 3rd heat exchanger tube 70 that is arranged in parallel approximate horizontal between second chamber 63 of second snout cavity 55 of first collector 50 and second collector 60 is extended, and more than the 4th heat exchanger tube 70 that is arranged in parallel equally approximate horizontal between second outlet plenum 57 of second chamber 63 of second collector and first collector 50 is extended.Second outlet plenum, the 57 order flow arrangement of more than 63, the second heat exchanger tube 70 in second chamber of second snout cavity, 55, the three many heat exchanger tube 70, the second collectors 60 and first collector 50 are to form second heat-exchanging loop 44.
Now especially with reference to Fig. 2 and 3, be arranged on first chamber and second chamber that baffle assembly 54 in the internal capacity of first collector 50 is divided into the internal capacity of first collector 50 first collector.Baffle assembly 54 comprises the first-class movable sealing member 54A and the second mobile containment member 54B.Each partition component 54A, 54B substantially transversely extend the internal capacity that crosses first collector 50.The first partition component 54A and second partition member 54B are arranged to branch at a certain distance so that leave empty space 80 in the internal capacity of first collector 50 between the first partition component 54A and second partition member 54B.Discharge port 90 is passed in a part of wall ground of first collector 50 that extends between the first partition component 54A and the second partition member 54B and opens.Discharge port 90 and between the outside zone of the space 80 of sky and first collector 50, set up open fluid path, the cold-producing medium that into empty space 80 is leaked from first chamber or second chamber of first collector 50 in any thus crack or crackle or other holes that possibly pass among one of the first partition component 54A or second partition member 54B directly is discharged to first collector, 50 atmosphere outside.
In refrigeration system 10; First heat-exchanging loop 42 of heat exchanger 40 in first refrigerant loop 20 as the cold-producing medium heat rejection heat exchanger; The high-pressure refrigerant vapor of the heat of discharging from compressor 22 is passed first snout cavity 51 that inlet ports 41 is sent to first collector 50 through refrigerant line 21, and cold high pressure refrigerant liquid is passed outlet port 47 and flowed into the refrigerant line 23 of first refrigerant loop from first outlet plenum 53 of first collector 50.Second heat-exchanging loop 44 of heat exchanger 40 is conduct refrigeration heat rejection heat exchanger in second refrigerant loop 30; The high-pressure refrigerant vapor of the heat of discharging from compressor 32 is passed second snout cavity 55 that inlet ports 43 is sent to first collector 50 through refrigerant line 31, and cold high pressure refrigerant liquid is passed outlet port 49 and flowed into the refrigerant line 33 of first refrigerant loop from second outlet plenum 57 of first collector 50.If any one among partition component 54A or the 54B cracks or other cracks, pass its any high-pressure refrigerant that leaks to empty space 80 from first snout cavity 51 or second outlet plenum 57 and will pass and discharge port 90 and directly be discharged to first collector, 50 atmosphere outside.
Since leakage of refrigerant by from the space drainage of sky to the outside zone of first collector 50, leakage of refrigerant can not leak into and pollute the cold-producing medium in other refrigerant loops.In addition, the refrigerant pressure stable state in the refrigerant loop of leakage of refrigerant descends.Operationally be associated to each pressure switch 92 refrigerant pressure in the monitoring refrigerant pipelines 23 and 33 respectively of refrigerant loop 42 and 44.If dropping to, the refrigerant pressure in any refrigerant loop is lower than predetermined lower bound; So in refrigerant charge loss even as big as before as for the infringement that causes compressor, the compressor related with this loop will opened and close to the pressure switch 92 related with this loop.
In conventional refrigeration with a plurality of independently refrigerant loops; These refrigerant loops have traditional multiloop heat exchanger; And comprise having and be used to make cold-producing medium to cycle through first refrigerant loop of first compressor of first heat-exchanging loop of total heat exchanger; Be used to make cold-producing medium to cycle through second refrigerant loop of second compressor of second heat-exchanging loop that has heat exchanger with having; If cold-producing medium leaks into another heat-exchanging loop from a heat-exchanging loop, then refrigeration system may face potential cross pollution.Such pollution will influence systematic function unfriendly and possibly cause the infringement of one or more compressors in the refrigeration system.
Now especially with reference to Fig. 2 and 3, be arranged on first chamber and second chamber that baffle assembly 54 in the internal capacity of first collector 50 is divided into the internal capacity of first collector 50 first collector.Baffle assembly 54 comprises the first-class movable sealing member 54A and the second mobile containment member 54B.Each partition component 54A, 54B basically laterally extend the internal capacity that crosses first collector 50.The first partition component 54A and second partition member 54B are arranged to branch at a certain distance so that leave empty space 80 in the internal capacity of first collector 50 between the first partition component 54A and second partition member 54B.Discharge port 90 is passed in a part of wall ground of first collector 50 that extends between the first partition component 54A and the second partition member 54B and opens.Discharge port 90 and between the outside zone of the space 90 of sky and first collector 50, set up the open fluid path, the cold-producing medium that into empty space 90 is leaked from first chamber or second chamber of first collector 50 in any thus crack that possibly pass one of the first partition component 54A or second partition member 54B or crackle or other holes directly is discharged to first collector, 50 atmosphere outside.
Now especially with reference to Fig. 5, baffle assembly also can be arranged in the internal capacity of second collector 60 and be divided into first chamber 61 and second chamber 63 with the internal capacity with second collector 60.Baffle assembly comprises the first-class movable sealing member 62A and the second mobile containment member 62B.Each partition component 62A, 62B basically laterally extend the internal capacity that crosses second collector 60.The first partition component 62A and second partition member 62B are arranged to branch at a certain distance so that leave empty space 80 in the internal capacity of second collector 60 between the first partition component 62A and second partition member 62B.Discharge port 90 is passed in a part of wall ground of first collector 50 that extends between the first partition component 62A and the second partition member 62B and opens.Discharge port 90 and between the outside zone of the space 80 of sky and second collector 60, set up the open fluid path, the cold-producing medium that empty space 80 is leaked from first chamber 61 or second chamber 63 of second collector 60 in any thus crack that possibly pass one of the first partition component 62A or second partition member 62B or crackle or other holes directly is discharged into second collector, 60 atmosphere outside.
Term used herein is for purpose of description, and unrestricted.Concrete structure disclosed herein and function detail only use basis of the present invention as instruction those skilled in the art, but are not to be used to limit the present invention.Though with reference to illustrating and described the present invention like the exemplary embodiments in the accompanying drawing, those skilled in the art can recognize when not deviating from the spirit and scope of the present invention can make various improvement.Those skilled in the art also will recognize can be used to replace the equivalent way with reference to the element of exemplary embodiments description disclosed herein under the situation that does not deviate from scope of the present invention.
Therefore, the disclosure is not limited to disclosed specific embodiment, but the disclosure will comprise all embodiment that fall in the accompanying claims scope.
Claims (7)
1. multiloop heat exchanger comprises:
Keep at a certain distance away and first and second collectors of longitudinal extension, each collector in first and second collectors all limits internal capacity;
A plurality of heat exchanger tubes with parallel relation arrangement and horizontal expansion between first collector and second collector; Each heat exchanger tube is limited at least one fluid flowing passage between first collector and second collector, and second group of limiting first heat-exchanging loop and a plurality of heat exchanger tubes of first group of a plurality of heat exchanger tubes limits second heat-exchanging loop;
Be arranged on the baffle assembly that is used for said at least one the internal capacity of said first and second collectors is divided into first chamber and second chamber at least one in first and second collectors; Said baffle assembly comprises the first-class movable sealing member and the second mobile containment member; Each partition component basically laterally extends and crosses said at least one the internal capacity of said first and second collectors; Form empty space described in said first and second collectors between said first partition component and said second partition member in the internal capacity of at least one thereby said first partition component and said second partition member are arranged to keep at a certain distance away, the space fluid of said sky is communicated with the zone of the outside of at least one described in said first and second collectors.
2. one kind prevents the independently method of the fluid cross pollution between the heat-exchanging loop in the multiloop heat exchanger; The multiloop heat transfer equipment have limit have first chamber related with first heat-exchanging loop and with the common header of the internal capacity in related second chamber of second heat-exchanging loop, said method comprising the steps of:
In the internal capacity of said common header, set up empty space between first chamber in said internal capacity and second chamber in the said internal capacity; And
Between the outside zone of the space of said sky and said common header, passing away is provided.
3. multiloop heat exchanger comprises:
First collector of the qualification internal capacity of basic vertical setting and longitudinal extension, internal capacity is divided into first chamber and second chamber, and first chamber is subdivided into first snout cavity and first outlet plenum, and second chamber is subdivided into second snout cavity and second outlet plenum;
Second collector of the qualification internal capacity of basic vertical setting and longitudinal extension, internal capacity is divided into first chamber and second chamber;
By being arranged in parallel and at more than first heat exchanger tube that basic horizontal between first chamber of first snout cavity of first collector and second collector is extended be arranged in parallel and first heat-exchanging loop that basic horizontal is extended between first outlet plenum of first chamber of second collector and first collector more than second heat exchanger tube forms;
By being arranged in parallel and at more than the 3rd heat exchanger tube that basic horizontal between second chamber of second snout cavity of first collector and second collector is extended be arranged in parallel and second heat-exchanging loop that basic horizontal is extended between second outlet plenum of second chamber of second collector and first collector more than the 4th heat exchanger tube forms;
Thereby be arranged in the internal capacity of first collector and be used to separate the baffle assembly that internal capacity forms first chamber and second chamber of first collector; Said baffle assembly comprises the first-class movable sealing member and the second mobile containment member; Each partition component basically laterally extends the internal capacity that crosses first collector, said first partition component and said second partition member be arranged to keep at a certain distance away and said first and second collectors between said first partition component and said second partition member described in form empty space in one the internal capacity; With
Pass the outlet opening that first collector leads to the space of said sky, thereby between the outside zone of the space of said sky and first collector, set up the open flow path.
4. a protection has the method for the refrigeration system of a plurality of independently refrigerant loops; Said a plurality of independently refrigerant loop has the multiloop heat exchanger; And comprise having and be used to make cold-producing medium to cycle through first refrigerant loop of first compressor of first heat-exchanging loop of heat exchanger; Be used to make cold-producing medium to cycle through second refrigerant loop of second compressor of second heat-exchanging loop of heat exchanger with having; Heat transfer equipment has the common header that limits internal capacity, said internal capacity have first chamber related with first heat-exchanging loop and with the second related chamber of second heat-exchanging loop, said method comprising the steps of:
Set up empty space in first chamber in said internal capacity and the internal capacity of the said common header between second chamber in the said internal capacity;
Discharging possibly leak into the outside zone of cold-producing medium to common header the empty space from first chamber or second chamber;
The refrigerant pressure in each loop in sensing first refrigerant loop and second refrigerant loop;
If the refrigerant pressure that senses in first refrigerant loop drops to the low pressure limit that is lower than regulation, then stop the operation of first compressor; And
If the refrigerant pressure that senses in second refrigerant loop drops to the low pressure limit that is lower than regulation, then stop the operation of second compressor.
5. one kind has first refrigerating circuit, second refrigerant loop, with have first heat-exchanging loop related with first refrigerating circuit and with the refrigerant vapor compression system of the heat exchanger of related second heat-exchanging loop of second refrigerating circuit; Multiloop said heat exchanger comprises:
Keep at a certain distance away and first and second collectors of longitudinal extension, each collector in first and second collectors all limits internal capacity;
Be arranged in parallel and a plurality of heat exchanger tubes of horizontal expansion between first collector and second collector; Each heat exchanger tube limits at least one fluid flowing passage between first collector and second collector, and second group of limiting first heat-exchanging loop and a plurality of heat exchanger tubes of first group of a plurality of heat exchanger tubes limits second heat-exchanging loop;
Be arranged on the baffle assembly that is used for said at least one the internal capacity of said first and second collectors is divided into first chamber and second chamber at least one in first and second collectors; Said baffle assembly comprises the first-class movable sealing member and the second mobile containment member; Each partition component basically laterally extends the internal capacity that crosses described in said first and second collectors at least one; Form empty space described in said first and second collectors between said first partition component and said second partition member in the internal capacity of at least one thereby said first partition component and said second partition member are arranged to keep at a certain distance away, the space fluid of said sky is communicated with the zone of the outside of at least one described in said first and second collectors.
6. multiloop heat exchanger comprises:
Keep at a certain distance away and first and second collectors of longitudinal extension, each collector in first and second collectors all limits internal capacity;
A plurality of being arranged in parallel and the heat exchanger tube of horizontal expansion between first collector and second collector; Each heat exchanger tube limits at least one fluid flowing passage between first collector and second collector, and second group of limiting first heat-exchanging loop and a plurality of heat exchanger tubes of first group of a plurality of heat exchanger tubes limits second heat-exchanging loop; With
Be arranged on the baffle assembly that is used for the internal capacity of first collector is divided into first chamber and second chamber in first collector; Said baffle assembly comprises the first-class movable sealing member and the second mobile containment member; Each partition component basically laterally extends the internal capacity that crosses first collector; Form empty space in the internal capacity of first collector between said first partition component and said second partition member thereby said first partition component and said second partition member are arranged to keep at a certain distance away, the space fluid of said sky is communicated with the outside zone of first collector; With
Be arranged on the baffle assembly that is used for the internal capacity of second collector is divided into first chamber and second chamber in second collector; Said baffle assembly comprises the first-class movable sealing member and the second mobile containment member; Each partition component basically laterally extends the internal capacity that crosses second collector; Form empty space in the internal capacity of second collector between said first partition component and said second partition member thereby said first partition component and said second partition member are arranged to keep at a certain distance away, the space fluid of said sky is communicated with the outside zone of second collector.
7. be used for collector is divided into the baffle assembly in first chamber and second chamber, said baffle assembly comprises:
The first-class movable sealing member and the second mobile containment member; Each partition component basically laterally extends the internal capacity that crosses collector;, said first partition component and said second partition member form empty space in the internal capacity of the collector between said first partition component and second partition member thereby being arranged to keep at a certain distance away, the outside zone of space fluid connected set pipe of said sky.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16643309P | 2009-04-03 | 2009-04-03 | |
| US61/166433 | 2009-04-03 | ||
| US16834109P | 2009-04-10 | 2009-04-10 | |
| US61/168341 | 2009-04-10 | ||
| PCT/US2010/029584 WO2010114975A2 (en) | 2009-04-03 | 2010-04-01 | Multi-circuit heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102378892A true CN102378892A (en) | 2012-03-14 |
Family
ID=42828928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800152235A Pending CN102378892A (en) | 2009-04-03 | 2010-04-01 | Multi-circuit heat exchanger |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120011867A1 (en) |
| EP (1) | EP2414763A4 (en) |
| CN (1) | CN102378892A (en) |
| CA (1) | CA2756680A1 (en) |
| WO (1) | WO2010114975A2 (en) |
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| CN102575913A (en) * | 2009-09-04 | 2012-07-11 | Abec公司 | Heat transfer baffle system and uses thereof |
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| CN109869967A (en) * | 2017-12-01 | 2019-06-11 | 开利公司 | Multi-temperature transport refrigeration system |
| CN111089502A (en) * | 2018-10-24 | 2020-05-01 | 乔治洛德方法研究和开发液化空气有限公司 | Method for producing a heat exchanger train consisting of at least a first and a second heat exchanger |
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- 2010-04-01 WO PCT/US2010/029584 patent/WO2010114975A2/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| CA2756680A1 (en) | 2010-10-07 |
| EP2414763A4 (en) | 2014-04-16 |
| EP2414763A2 (en) | 2012-02-08 |
| US20120011867A1 (en) | 2012-01-19 |
| WO2010114975A3 (en) | 2011-01-13 |
| WO2010114975A2 (en) | 2010-10-07 |
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