CN106796073A - Low charge packaged type refrigeration system - Google Patents
Low charge packaged type refrigeration system Download PDFInfo
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- CN106796073A CN106796073A CN201580036543.1A CN201580036543A CN106796073A CN 106796073 A CN106796073 A CN 106796073A CN 201580036543 A CN201580036543 A CN 201580036543A CN 106796073 A CN106796073 A CN 106796073A
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- Prior art keywords
- refrigerant
- condenser
- refrigeration
- evaporator
- liquid
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Classifications
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
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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
- F25B33/00—Boilers; Analysers; Rectifiers
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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
- F25B41/00—Fluid-circulation arrangements
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
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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
- F25B2400/05—Compression system with heat exchange between particular parts of the system
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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
- F25B2400/07—Details of compressors or related parts
- F25B2400/071—Compressor mounted in a housing in which a condenser is integrated
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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
- F25B2400/13—Economisers
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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
- F25B2400/23—Separators
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/197—Pressures of the evaporator
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21175—Temperatures of an evaporator of the refrigerant at the outlet of the evaporator
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
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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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
Abstract
A kind of packaged type pump liquid cycle refrigeration system, the refrigerant charge of the refrigeration capacity per ton of the system is 10lbs or smaller.Compressor and associated components are located in pre-packaged formula modularization computer room, and wherein condenser is arranged on computer room, and evaporator close-coupled is to pre-packaged formula modularization computer room.The large-scale receiver container of prior art can be replaced with single-phase or two-phase cyclonic separator, and described single-phase or two-phase cyclonic separator is also placed in the pre-packaged formula modularization computer room.
Description
Technical field
The present invention relates to industrial refrigeration system.
Background technology
The industrial refrigeration system of prior art, such as the refrigeration system of cold store, particularly amino refrigeration system,
It is that height separates.Evaporator coil is frequently mounted on the ceiling of refrigeration space, or is collected on the roof of refrigeration space
On attic in, condenser coil and fan are typically mounted on independent on the roof of the building comprising the refrigeration space
In space, and compressor, receiving tank, oil separating tank and other machinery system are typically collected in away from the single of public space
In computer room.Because ammonia is to the toxicity of the mankind, the influence of the release caused by mistake or mechanical integrity and terrorism
Threat, the amino industrial refrigeration system containing a large amount of ammonia highly adjusted.Containing the system needs for having more than 10,000lbs ammonia
The Risk Management Plan (Risk Management Plan, RMP) and the process safety governing plan (OSHA ' s of OSHA of EPA
Process Safety Management Plan), and the inspection of federal agency may be caused.California is to containing super
Crossing the system of 500lbs ammonia has extra limitation/requirement.Any refrigeration system of 100 pounds or more of emission intensity is caused to leak,
Must report to EPA.
The content of the invention
The present invention is a kind of packaged type pump liquid cycle refrigeration system, and the refrigerant charge of its refrigeration capacity per ton is
10lbs or less.The present invention is a kind of low charge packaged type refrigeration system, and wherein compressor and associated components are located at pre-packaged formula
In modularization computer room, and wherein condenser is closely connected to pre-packaged formula modularization computer room.Embodiments in accordance with the present invention,
Can be substituted for separating from evaporator with the liquid-vapor isolating construction/device being placed in pre-packaged formula modularization computer room
The refrigerant steam and refrigerant liquid that leave and store standby refrigerant liquid, prior art large-scale receiver and hold
Device.According to one embodiment, liquid-vapor isolating construction/device can be single-phase or two-phase cyclone separator.According to the present invention
Another embodiment, standard energy-saving appliance container (its collect come condenser liquid) can also be optionally pre- by being also placed in
Single-phase or two-phase cyclonic separator in packaged type modularization computer room is replaced.Evaporator coil is preferably formed with internal enhancing,
To improve flowing of the refrigerant liquid by pipeline, strengthen heat exchange and reduce refrigerant charge.According to one embodiment, condensation
Device can be constituted by being preferably formed with internal enhanced coil pipe, and the internal enhancing is improved by the refrigerant steam of pipeline
Flowing, strengthens heat exchange and reduces refrigerant.According to more preferred embodiment, evaporator tube enhancing and condenser tube strengthen each other not
Together.It is entitled that " (inside for coil pipe product strengthens Internally Enhanced Tubes for Coil Products
Pipe) " the full content of CO-PENDING provisional application 62/188,264 be incorporated herein by reference.It is cold according to alternate embodiment
Condenser system can use micro channel heat exchanger technology.Condenser system can be as known in the art for by refrigerant
Steam is condensed into any types of liquid refrigerant.
According to various embodiments, the system can be liquid glut system or direct expansion system, but optimal
Choosing is with glut rate (the quality of steam stream needed for entering the liquid refrigerant mass flowrate of evaporator and producing cooling effect
The ratio that rate is compared) very low charge or " critical filling " system, wherein glut rate be 1.05: 1.0 to 1.8: 1.0,
Preferred glut rate is 1.2: 1.In order to keep this low glut rate, such as in U.S. Patent application 14/221,694
Can with those capacitance sensors described in 14/705,781 (full content of this two applications is both incorporated herein by reference)
To set at each point in systems, to determine the relative quantity of liquid and steam, such that it is able to correspondingly regulating system.It is this
Sensor is preferably located in the porch of liquid-vapor separator and/or the exit of evaporator, and/or positioned at evaporator
Outlet and liquid-vapor separator between refrigerant pipeline in somewhere and/or compressor porch and/or in liquid
The somewhere in refrigerant pipeline between the steam (vapor) outlet and compressor of body-vapor separation device.
In addition, condenser system and computer room preferably close-coupled are to evaporator.Evaporator is located at refrigeration space wherein
In the case that attic evaporator in " attic " room of top is arranged, computer room is preferably connected to prefabricated attic evaporation
Device module.In the case of ceiling mountable evaporator in refrigeration space, integrated condenser system and modularization computer room are pacified
On floor or roof directly over evaporator unit (so-called " piece-rate system ").
Compared with prior art, refrigeration system of the combination of feature as herein described there is provided very low charge.Specifically,
The present invention is configured to refrigeration capacity per ton to be needed to be less than 6 pounds of ammonia.According to preferred embodiment, refrigeration per ton of the invention can need few
In 4 pounds of ammonia.According to most preferred embodiment, the present invention can effectively be operated with refrigeration capacity per ton less than 2 pounds.Compare
Under, the refrigeration per ton of " bar type construction " system of prior art needs 15-25 pounds of ammonia, and prior art low charge system
Need about 10 lb/tons refrigeration.Therefore, for 50 tons of refrigeration systems, the bar type building system of prior art needs 750-1,250
The ammonia of pound, the low charge system of prior art needs about 500 pounds of ammonia, and the present invention needs the ammonia less than 300 pounds, and excellent
Ammonia of the choosing less than 200 pounds, more preferably less than 100 pounds of ammonia, the reporting thresholds of EPA are (assuming that all ammonia in system are all leaked out
Come).In fact, 50 tons of refrigeration systems of the invention, the ammonia of the whole amount in system can be discharged into peripheral region, without
The mankind or environment can be caused with significantly infringement or injured.
Brief description of the drawings
Fig. 1 is the schematic diagram of refrigeration system according to an embodiment of the invention.
Fig. 2 is the enlarged drawing of the upper left of Fig. 1.
Fig. 3 is the enlarged drawing of the bottom left section of Fig. 1.
Fig. 4 is the enlarged drawing of the lower right-most portion of Fig. 1.
Fig. 5 is the enlarged drawing of the upper right portion of Fig. 1.
Fig. 6 is that the three-dimensional of combined-type evaporator module and pre-packaged formula modularization computer room according to an embodiment of the invention is saturating
View.
Fig. 7 is the three of combined-type evaporator module according to another embodiment of the present invention and pre-packaged formula modularization computer room
Dimension perspective view.
Fig. 8 is that the three-dimensional of the inside of formula modularization computer room pre-packaged according to an embodiment of the invention and condenser unit is saturating
View.
Fig. 9 is the three of the inside of pre-packaged formula modularization computer room according to another embodiment of the present invention and condenser unit
Dimension perspective view.
Figure 10 is combined-type evaporator module and pre-packaged formula modularization computer room according to another embodiment of the present invention
Three-dimensional perspective.
Figure 11 shows three three-dimensionals of different embodiments of combined-type evaporator module and pre-packaged formula modularization computer room
Perspective view, wherein the embodiment in left side includes the air-cooled condenser system that top is installed.
Figure 12 shows the three-dimensional sectional of the inside of pre-packaged formula modularization computer room according to another embodiment of the present invention
Figure.
Figure 13 shows the three-dimensional sectional of the inside of Combined roof room evaporator module and pre-packaged formula modularization computer room
Figure.
Specific embodiment
Fig. 1 is the technique and meter diagram of low charge packaged type refrigeration system according to an embodiment of the invention.Four of Fig. 1
The enlarged drawing of a quarter part is shown in Fig. 2 to Fig. 5.The system includes the steaming including evaporator coil 4a, 4b respectively
Hair device 2a and 2b, condenser 8, compressor 10, (it can be with valve, dip hatch or other expansion gears for expansion gear 11a and 11b
Form provide), pump 16, liquid-vapor separator 12 and energy-saving appliance 14.According to one embodiment, liquid-vapor separates dress
It can be recyclable container to put 12.According to other embodiments, one of liquid-vapor separator 12 and energy-saving appliance 14 or two
Person can be provided in the form of single-phase or two-phase cyclonic separator.Aforementioned components can using standard refrigerant pipe arrangement with Fig. 1-
Mode shown in 5 is connected.As it is used herein, unless otherwise indicated, term " being connected to " or " via ... connection " mean straight
Connect or be indirectly connected with.Optionally except defrosting system 18 includes ethylene glycol tank 20, eg pump 22, glycol condenser coil pipe 24 and second
Glycol coil pipe 6a, 6b, their arrangements also using refrigerant pipe arrangement according to Fig. 1 and be connected to each other and in system its
Its element.According to other optional alternate embodiments, hot gas or electricity can be provided except defrosting system.Evaporation feed liquor can also be provided
Pump/recirculator 16, to provide the additional energy needed for forcing liquid refrigerant to pass through evaporator heat exchanger.
Embodiment according to Fig. 1-5, low pressure liquid refrigerant (" LPL ") is fed to by pump 16 by expansion gear 11
Evaporator.Refrigerant receives heat from refrigeration space, leaves evaporator as low-pressure steam (" LPV ") and liquid, and conveyed
To liquid-vapor separator 12 (it can be alternatively cyclonic separator), liquid-vapor separator 12 is by liquid and steams
Vapour is separated.Liquid refrigerant (" LPL ") returns to pump 16, and steam (" LPV ") is transported to compressor 10, and compressor 10 makes
Steam is assembled and high steam (" HPV ") is sent into condenser 8, and high steam is compressed into highly pressurised liquid by condenser 8
(“HPL”).Highly pressurised liquid (" HPL ") is transported to energy-saving appliance 14, and it improves system effectiveness in the following manner：By highly pressurised liquid
(" HPL ") is reduced to intermediate pressure liquid " IPL ", and intermediate pressure liquid then is transported into liquid-vapor separator 12, liquid
Body-vapor separation device 12 supplies low pressure liquid refrigerant (" LPL ") to pump 16, so as to complete refrigerant cycle.In figs. 1-5
Ethylene glycol flow path (in the case where optional ethylene glycol removes defrosting system) and compressor oil flow path are also show, but
Need not discuss in more detail herein, except to point out that this low charge packaged type refrigeration system can be optionally included in encapsulation
Defrosting completely and compressor oil recirculation subsystem in system.Fig. 1-5 also includes many of the monitoring and control for system
Control valve, isolating valve and safety valve and temperature and pressure sensor (also referred to as indicator or meter).Additionally, optional pass
Sensor 26a, 26b may be located at the downstream of described evaporator 2a, 2b, in the upstream of the entrance of liquid-vapor separator 12, use
To measure the vapor/liquid ratio of the refrigerant for leaving evaporator.According to alternate embodiment, optional sensor 26c may be located at
In refrigerant pipeline between the outlet of liquid-vapor separator 12 and the entrance of compressor 10.Sensor 26a, 26b and
26c can be the capacitance sensor of the type disclosed in 781 in United States serial 14/221,694 and 14/705, two texts
The disclosure offered is incorporated herein by reference in their entirety.Fig. 6 shows that Combined roof room is steamed according to an embodiment of the invention
The example of hair device module and pre-packaged formula modularization computer room.According to the embodiment, evaporator is placed in evaporator module, and
The remaining part of the system shown in Fig. 1-5 is placed in computer room module.According to each of adoptable condenser system of the invention
Embodiment is planted including the evaporative condenser with optional internal reinforced pipe, with the enhanced air cooling fins in optional inside and pipe
Formula heat exchanger, air cooling micro channel heat exchanger and water-cooled heat exchanger.In the situation of air-cooled condenser system
Under, condenser coil and fan may be mounted on the top of computer room module, for completely self-contained roof system.Other classes
The condenser system of type may be located at the inside of computer room.According to the embodiment, whole system is completely self-contained in two roof moulds
In block so that whole system allows to load using such as level bed non-escorts vehicle (flat bed permit load non-
Escort vehicle), it is very easy to be transported to infield on highway.Attic and computer room module can be separated for transporting
Defeated and/or final placement, but it is mounted adjacent to maximize cause according to most preferred embodiment, attic and computer room module
The reduction of cryogen charge.According to most preferred embodiment, roof room module and computer room module are integrated into individual module, but evaporator
Space is spatially separating and adiabatic with computer room, to meet industrial standard.Fig. 7,10 and 11 show adjacent attic evaporator mould
The other examples of block and computer room module.
Fig. 8,9 and 12 are the three of the inside of pre-packaged formula modularization computer room according to embodiments of the present invention and condenser unit
Dimension profile perspective, wherein all elements of low charge packaged type refrigeration system are comprised in integrated unit in addition to evaporator
In.As discussed herein, evaporator can be placed in roof room module, or it can be suspended in refrigeration space, excellent
Underface of the selection of land in the position of computer room module.According to these embodiments, evaporator is configured to directly to cool down in refrigeration space
Or the air that is fed to refrigeration space.
According to alternate embodiment (for example, wherein end user be not intended to cooling air contacted with containing amino moiety/pipe arrangement), steam
Hair device can be structured as heat exchanger to cool down auxiliary Non-Volatile Fluid, such as water or water/ethylene glycol mixture, the auxiliary
Non-Volatile Fluid is used to cool down the air in refrigeration space.In this case, evaporator may be mounted at the inside of computer room.
Figure 13 is the section three-dimensional perspective of the inside of Combined roof room evaporator module and pre-packaged formula modularization computer room
Figure.
Compared with prior art, refrigeration system of the combination of feature as herein described there is provided very low charge.Specifically,
The present invention is configured to refrigeration capacity per ton to be needed to be less than 6 pounds of ammonia.According to preferred embodiment, refrigeration per ton of the invention can need
Ammonia less than 4 pounds.According to most preferred embodiment, the present invention can effectively be operated with less than 2 lb/ton refrigerating capacitys.Compared to it
Under, prior art " bar type construction " system refrigeration per ton needs 15-25 pounds of ammonia, and the low charge system of prior art is per ton
Refrigeration needs about 10 pounds.Therefore, for 50 tons of refrigeration systems, the bar type building system of prior art needs 750-1,250 pounds
Ammonia, the low charge system of prior art needs about 500 pounds of ammonia, and the present invention needs the ammonia less than 300 pounds, and preferably
Less than 200 pounds of ammonia, more preferably less than 100 pounds ammonia, the reporting thresholds (assuming that all ammonia in system are all leaked out) of EPA.It is real
On border, 50 tons of refrigeration systems of the invention, the ammonia of the whole amount in system can be discharged into peripheral region, without to people
Class or environment cause significantly infringement or injure.
Although ammonia wherein of the invention main be the refrigeration system of refrigerant context in be described, it is contemplated that
The present invention will also apply to use the refrigeration system of other natural refrigerants (including carbon dioxide).
Description of the invention is substantially only exemplary, thus without departing from packaged type (one or two module it is integrated
Compact systems) low refrigerant charge (that is, refrigerant of the refrigeration capacity per ton less than 10 pounds) refrigeration system design change meaning
Figure is within the scope of the present invention.Otherwise constitute packaged type pump liquid cycle refrigeration system and refrigeration wherein per ton
There is capacity 10lbs or less refrigerant, relative any change that specific embodiment is described herein to be not to be regarded as a departure from
The spirit and scope of the present invention for illustrating in the following claims.
Claims (31)
1. a kind of refrigeration system, including：
Refrigerant evaporator coil,
Vapor/liquid separation structure, the vapor/liquid separation structure is connected to the evaporator coil via refrigerant pipeline
Outlet, and be configured to separate low-pressure refrigerant steam from low-pressure refrigerant liquid；
Coolant compressor, the coolant compressor is connected to the liquid-vapor separator via refrigerant pipeline
Outlet, and be configured to compress the refrigerant steam from the vapour liq isolating construction；
Refrigerant condenser, the refrigerant condenser is connected to the outlet of the coolant compressor via refrigerant pipeline,
And it is configured to for the refrigerant steam produced in the compressor to condense into refrigerant liquid,
High-pressure side expansion gear, the high-pressure side expansion gear is connected to going out for the refrigerant condenser via refrigerant pipeline
Mouthful, and it is configured to reduce the pressure of the refrigerant liquid received from the refrigerant condenser；
Collection vessel, the collection vessel is connected to the outlet of the high-pressure side expansion gear via refrigerant pipeline, is used to connect
Receive the refrigerant liquid from the high-pressure side expansion gear；
Low-pressure side expansion gear, the low-pressure side expansion gear is connected to the outlet of the collection vessel via refrigerant pipeline,
And it is configured to reduce the pressure of the refrigerant liquid received from the collection vessel；
The outlet of the low-pressure side expansion gear is connected to the refrigerant pipeline of the entrance of the vapor/liquid separation structure,
The refrigerant pipeline is configured to for refrigerant liquid to be sent to the isolating construction；
The vapor/liquid separation structure has the liquid outlet being connected with the entrance of the evaporator via refrigerant pipeline；
Wherein described vapor/liquid separation structure, the compressor, the high-pressure side expansion gear, the collection vessel and institute
Low-pressure side expansion gear is stated to be located in pre-packaged formula modularization computer room；
The refrigeration capacity per ton of wherein described refrigeration system needs the refrigerant less than six pounds.
2. refrigeration system according to claim 1, wherein the refrigerant is ammonia.
3. refrigeration system according to claim 1, wherein the vapor/liquid separation structure includes cyclonic separator.
4. refrigeration system according to claim 1, wherein the vapor/liquid separation structure includes recirculator container.
5. refrigeration system according to claim 1, wherein the collection vessel includes cyclonic separator.
6. refrigeration system according to claim 1, wherein the collection vessel includes energy-saving appliance.
7. refrigeration system according to claim 1, wherein the evaporator coil have it is internal strengthen, to improve the steaming
The flowing of the liquid/vapor in hair device coil pipe, and improve heat exchange and refrigerant charge.
8. refrigeration system according to claim 1, wherein the condenser includes thering is internal enhanced coil pipe.
9. refrigeration system according to claim 1, wherein the condenser includes micro channel heat exchanger.
10. refrigeration system according to claim 1, further includes to be located at the connection evaporator coil and the steaming
Liquid vapour quality in the refrigerant pipeline of vapour/liquid isolating construction compares sensor.
11. refrigeration systems according to claim 1, further include to be located at the connection vapor/liquid separation structure and
Liquid vapour quality in the refrigerant pipeline of the compressor compares sensor.
12. refrigeration systems according to claim 1, further include oil eliminator container, the oil eliminator container structure
Cause to separate compressor oil from the refrigerant steam for being received from the compressor.
13. refrigeration systems according to claim 1, wherein the condenser is air-cooled condenser, the air is cold
Cooler condenser includes the coil pipe and condenser fan on the top of the pre-packaged formula modularization computer room.
14. refrigeration systems according to claim 1, wherein the condenser is located at the pre-packaged formula modularization computer room
It is internal.
15. refrigeration systems according to claim 1, the refrigeration capacity per ton of the refrigeration system needs the cause less than four pounds
Cryogen.
16. refrigeration systems according to claim 1, the refrigeration capacity per ton of the refrigeration system needs the cause less than two pounds
Cryogen.
A kind of 17. refrigeration systems, including：
Refrigerant condenser；With
Prefabricated modularization computer room, comprising：
Vapor/liquid separation structure, the vapor/liquid separation structure is configured to be connected to evaporator via refrigerant pipeline
Outlet；
Coolant compressor, the coolant compressor is connected to the outlet of the isolating construction via refrigerant pipeline；And
The entrance of the condenser is connected to via refrigerant pipeline；
Collection vessel, the collection vessel is connected to the outlet of the refrigerant condenser via refrigerant pipeline；
The outlet of the collection vessel is connected to the refrigerant pipeline of the entrance of the vapor/liquid separation structure；
Wherein described vapor/liquid separation structure have be configured to via refrigerant pipeline and going out that the entrance of evaporator is connected
Mouthful；
And the refrigeration capacity per ton of wherein described refrigeration system needs the refrigerant less than six pounds.
18. refrigeration systems according to claim 17, further include evaporator, and the evaporator is connected to the steaming
The entrance of vapour/liquid isolating construction, and it is connected to the outlet of the vapor/liquid separation structure.
19. refrigeration systems according to claim 18, wherein the evaporator is arranged in prefabricated modularization vaporization chamber.
20. refrigeration systems according to claim 18, wherein the evaporator is arranged on neighbouring or prefabricated less than described
Modularization computer room refrigeration space in.
21. refrigeration systems according to claim 17, further include to be located at the fluid of the vapor/liquid separation structure
The recirculation pump in flow of refrigerant path between outlet and the entrance of evaporator.
22. refrigeration systems according to claim 17, wherein the condenser is air-cooled condenser, the air is cold
Cooler condenser includes the coil pipe and fan that are configured for mount on the top of the prefabricated modularization computer room.
23. be used for reduce refrigeration capacity per ton in refrigeration system amount of refrigerant method, the refrigeration system have evaporator,
Liquid/vapor separator, compressor, condenser and collection vessel, methods described include：The compressor, the liquid are steamed
Vapour separator and the collection vessel are encapsulated in prefabricated modularization computer room, by the condenser in air-cooled condenser
In the case of be arranged on the roof of the prefabricated modularization computer room, and the evaporator is connected to via refrigerant pipeline
The prefabricated modularization computer room.
24. methods according to claim 23, wherein the evaporator is arranged in prefabricated modularization vaporization chamber.
25. methods according to claim 24, wherein the prefabricated modularization vaporization chamber is adjacent to the prefabricated module
Change computer room to install.
26. methods according to claim 23, wherein the evaporator is being arranged on the prefabricated modularization computer room just
In the refrigeration space of lower section.
27. be used for reduce refrigeration capacity per ton in refrigeration system amount of refrigerant method, the refrigeration system have evaporator,
Liquid/vapor separator, compressor, condenser and collection vessel, methods described include：Installation includes the compressor, described
The prefabricated modularization computer room of liquid vapour separator and the collection vessel, and refrigerant pipeline is used by the evaporator
It is connected to the prefabricated modularization computer room.
28. methods according to claim 27, including the neighbouring prefabricated modularization computer room installs prefabricated modularization
Vaporization chamber.
29. methods according to claim 27, including the evaporator is arranged on the prefabricated modularization computer room
In the refrigeration space of underface.
30. methods according to claim 27, wherein the condenser is located at the inside of the prefabricated modularization computer room.
31. methods according to claim 27, wherein the condenser is the air cooling condensation for including coil pipe and fan
Device, and wherein methods described includes being arranged on the condenser on the top of the prefabricated modularization computer room.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010082225.1A CN111503951A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged refrigeration system |
| CN201910455918.8A CN110260545A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged type refrigeration system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462020271P | 2014-07-02 | 2014-07-02 | |
| US62/020,271 | 2014-07-02 | ||
| PCT/US2015/039111 WO2016004390A2 (en) | 2014-07-02 | 2015-07-02 | Low charge packaged refrigeration system |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010082225.1A Division CN111503951A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged refrigeration system |
| CN201910455918.8A Division CN110260545A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged type refrigeration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106796073A true CN106796073A (en) | 2017-05-31 |
| CN106796073B CN106796073B (en) | 2020-03-17 |
Family
ID=58452267
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910455918.8A Pending CN110260545A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged type refrigeration system |
| CN202010082225.1A Pending CN111503951A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged refrigeration system |
| CN201580036543.1A Active CN106796073B (en) | 2014-07-02 | 2015-07-02 | Low charge packaged refrigeration system |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910455918.8A Pending CN110260545A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged type refrigeration system |
| CN202010082225.1A Pending CN111503951A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged refrigeration system |
Country Status (2)
| Country | Link |
|---|---|
| EP (3) | EP4180746A1 (en) |
| CN (3) | CN110260545A (en) |
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- 2015-07-02 CN CN202010082225.1A patent/CN111503951A/en active Pending
- 2015-07-02 CN CN201580036543.1A patent/CN106796073B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4180746A1 (en) | 2023-05-17 |
| CN111503951A (en) | 2020-08-07 |
| EP3164651A4 (en) | 2018-05-02 |
| EP3164651A2 (en) | 2017-05-10 |
| CN106796073B (en) | 2020-03-17 |
| EP3869126A1 (en) | 2021-08-25 |
| CN110260545A (en) | 2019-09-20 |
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