CN110260545A - Low charge packaged type refrigeration system - Google Patents
Low charge packaged type refrigeration system Download PDFInfo
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- CN110260545A CN110260545A CN201910455918.8A CN201910455918A CN110260545A CN 110260545 A CN110260545 A CN 110260545A CN 201910455918 A CN201910455918 A CN 201910455918A CN 110260545 A CN110260545 A CN 110260545A
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- Prior art keywords
- evaporator
- refrigeration system
- computer room
- refrigerant
- condenser
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Analytical Chemistry (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Other Air-Conditioning Systems (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
Low charge packaged type refrigeration system.A kind of packaged type pumping liquid-circulating refrigeration system, the refrigerant charge of the refrigeration capacity per ton of the system are 10lbs or smaller.Compressor and associated components are located in pre-packaged formula modularization computer room, and wherein condenser is mounted on computer room, and evaporator close-coupled is to pre-packaged formula modularization computer room.The large-scale receiver container of the 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
The application be the applying date be on July 2nd, 2015, application No. is 201580036543.1 (international application no PCT/
US2015/039111), the divisional application of the application for a patent for invention of entitled " low charge packaged type refrigeration system ".
Technical field
The present invention relates to industrial refrigeration systems.
Background technique
The industrial refrigeration system of the prior art, such as the refrigeration system of cold store, especially 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 the individual of separate public space
In computer room.Since ammonia is to the toxicity of the mankind, the influence and terrorism of the release as caused by mistake or mechanical integrity
Threat, the amino industrial refrigeration system containing a large amount of ammonia is by height adjustment.Containing the system needs for having more than 10,000lbs ammonia
Process safety governing plan (the OSHA's of Risk Management Plan (Risk the Management Plan, RMP) and OSHA of EPA
Process Safety Management Plan), and may cause the inspection of federal agency.California is to containing super
The system for crossing 500lbs ammonia has additional limitation/requirement.Any refrigeration system of 100 pounds or more of emission intensity is caused to leak,
It must report to EPA.
Summary of the invention
The present invention is a kind of packaged type pumping liquid-circulating refrigeration system, and the refrigerant charge of refrigeration capacity per ton is
10lbs or less.The present invention is that a kind of low charge packaged type refrigeration system, 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.According to an embodiment of the invention,
Separation can be substituted for the liquid-vapor separated structure/device being placed in pre-packaged formula modularization computer room from evaporator
It the refrigerant steam and refrigerant liquid that leave and stores spare refrigerant liquid, the prior art large-scale receiver and holds
Device.According to one embodiment, liquid-vapor separated structure/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 replacement in packaged type modularization computer room.Evaporator coil is preferably formed with internal enhancing,
To improve flowing of the refrigerant liquid by pipeline, enhances heat exchange and reduce refrigerant charge.According to one embodiment, condensation
Device can be made of the coil pipe for being preferably formed with inside enhancing, and the internal enhancing improves the refrigerant steam for passing through pipeline
Flowing enhances heat exchange and reduces refrigerant.According to more preferred embodiment, evaporator tube enhancing and condenser tube enhance each other not
Together.It is entitled that " (inside for coil pipe product enhances Internally Enhanced Tubes for Coil Products
Pipe) " the full content of co-pending provisional application 62/188,264 be incorporated herein by reference.According to alternate embodiment, cold
Condenser system can use micro channel heat exchanger technology.Condenser system can be as known in the art be used for refrigerant
Steam is condensed into any type of liquid refrigerant.
According to various embodiments, the system can be liquid glut system or direct expansion system, but optimal
Selecting has glut rate (into quality of steam stream needed for the liquid refrigerant mass flowrate of evaporator and generation 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
It can with those capacitance sensors described in 14/705,781 (full content of this two applications is both incorporated herein by reference)
To be arranged at each point in systems, to determine the relative quantity of liquid and steam, so as to adjust accordingly system.It is this
Sensor is preferably located in the inlet of liquid-vapor separator and/or the exit of evaporator, and/or is located at evaporator
Outlet and liquid-vapor separator between refrigerant pipeline in somewhere and/or compressor inlet and/or in liquid
The somewhere in refrigerant pipeline between body-vapor separation device steam (vapor) outlet and compressor.
In addition, condenser system and computer room preferably close-coupled are to evaporator.Evaporator is located at refrigeration space wherein
In the case where attic evaporator arrangement in " attic " room of top, computer room is preferably connected to prefabricated attic evaporation
Device module.In the case where ceiling mountable evaporator in refrigeration space, integrated condenser system and modularization computer room peace
On floor or roof right above evaporator unit (so-called " separation system ").
Compared with prior art, the combination of feature as described herein provides the refrigeration system of very low charge.Specifically,
The present invention is configured to the ammonia that refrigeration capacity per ton needs to be less than 6 pounds.According to preferred embodiment, present invention refrigeration per ton 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.It compares
Under, the refrigeration per ton of " bar type construction " system of the prior art needs 15-25 pounds of ammonia, and the low charge system of the prior art
Need about 10 lb/tons of refrigeration.Therefore, for 50 tons of refrigeration systems, the bar type building system of the prior art needs 750-1, and 250
The ammonia of pound, the low charge system of the prior art needs about 500 pounds of ammonia, and the present invention needs to be less than 300 pounds of ammonia, and excellent
The ammonia less than 200 pounds, more preferably less than 100 pounds of ammonia are selected, the reporting thresholds of EPA are (assuming that all ammonia in system all leak out
Come).In fact, 50 tons of refrigeration systems according to the present invention, the ammonia of the whole amount in system can be discharged into peripheral region, without
The mankind or environment can be caused significantly to damage or injure.
Detailed description of the invention
Fig. 1 is the schematic diagram of the refrigeration system of embodiment according to the present 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 be embodiment according to the present invention combined-type evaporator module and pre-packaged formula modularization computer room three-dimensional thoroughly
View.
Fig. 7 is the three of combined-type evaporator module and pre-packaged formula modularization computer room according to another embodiment of the present invention
Tie up perspective view.
Fig. 8 be the three-dimensional of the pre-packaged formula modularization computer room of embodiment according to the present invention and the inside of condenser unit thoroughly
View.
Fig. 9 is the three of the inside of pre-packaged formula modularization computer room and condenser unit according to another embodiment of the present invention
Tie up 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 the three-dimensional of three 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 into Fig. 5.The system includes respectively including the steaming of evaporator coil 4a, 4b
Hair device 2a and 2b, condenser 8, compressor 10, (it can be with valve, dip hatch or other expansion devices by expansion device 11a and 11b
Form provide), pump 16, liquid-vapor separator 12 and energy-saving appliance 14.According to one embodiment, liquid-vapor separation dress
Setting 12 can be recyclable container.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.Standard refrigerant piping can be used with Fig. 1-in aforementioned components
Mode shown in 5 connects.As it is used herein, unless otherwise indicated, term " being connected to " or mean " via ... connection " straight
It connects or is 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, they are also piped arrangement according to figure 1 using refrigerant and are connected to its each other and in system
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 forces liquid refrigerant to pass through additional energy needed for evaporator heat exchanger to provide.
The embodiment according to shown in Fig. 1-5, low pressure liquid refrigerant (" LPL ") are supplied to by pump 16 by expansion device 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 optionally cyclonic separator), liquid-vapor separator 12 is by liquid and steams
Vapour separation.Liquid refrigerant (" LPL ") is back to pump 16, and steam (" LPV ") is transported to compressor 10, and compressor 10 makes
Steam is assembled and sends condenser 8 for high steam (" HPV "), and high steam is compressed into highly pressurised liquid by condenser 8
("HPL").Highly pressurised liquid (" HPL ") is transported to energy-saving appliance 14, improves system effectiveness in the following manner: by highly pressurised liquid
(" HPL ") is reduced to intermediate pressure liquid " IPL ", and intermediate pressure liquid is then transported to liquid-vapor separator 12, liquid
Body-vapor separation device 12 supplies low pressure liquid refrigerant (" LPL ") to pump 16, to complete refrigerant cycle.In figs. 1-5
Ethylene glycol flow path (in the case where optional ethylene glycol is except defrosting system) and compressor oil flow path are also shown, still
It does not need to discuss in more detail herein, in addition to point out that this low charge packaged type refrigeration system can be optionally included in encapsulation
Complete defrosting and compressor oil recirculation subsystem in system.Fig. 1-5 further 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).In addition, optional pass
Sensor 26a, 26b can 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 for the refrigerant for leaving evaporator.According to alternate embodiment, optional sensor 26c can 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 United States serial 14/221,694 and 14/705,781, two texts
The disclosure offered is incorporated herein by reference in their entirety.It steams the Combined roof room that Fig. 6 shows embodiment according to the present invention
Send out the example of device module and pre-packaged formula modularization computer room.According to this embodiment, evaporator is placed in evaporator module, and
The remaining part of system shown in Fig. 1-5 is placed in computer room module.Adoptable condenser system is each according to the present invention
Kind embodiment includes the evaporative condenser with optional internal reinforced pipe, with the optional internal air cooling fins and pipe enhanced
The cooling micro channel heat exchanger of formula heat exchanger, air and water-cooled heat exchanger.The air-cooled condenser system the case where
Under, condenser coil and fan may be mounted on the top of computer room module, to be used for completely self-contained roof system.Other classes
The condenser system of type can be located at the inside of computer room.According to this 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 on highway to infield.Attic and computer room module can be separated for transporting
Defeated and/or final placement, but be mounted adjacent according to most preferred embodiment, attic and computer room module to maximize and cause
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 is insulated 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 and condenser unit according to an embodiment of the present invention
Sectional perspective view is tieed up, 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 cool down in refrigeration space
Or the air that is supplied to refrigeration space.
(for example, wherein end user is not intended to cooling air to contact with containing amino moiety/piping) according to alternate embodiment, steams
Hair device can be structured as heat exchanger and assist Non-Volatile Fluid, such as water or water/ethylene glycol mixture, the auxiliary with cooling
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, the combination of feature as described herein provides the refrigeration system of very low charge.Specifically,
The present invention is configured to the ammonia that refrigeration capacity per ton needs to be less than 6 pounds.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/tons refrigerating capacitys.Compared to it
Under, the prior art " bar type construction " system refrigeration per ton needs 15-25 pounds of ammonia, and the low charge system of the prior art is per ton
Refrigeration needs about 10 pounds.Therefore, for 50 tons of refrigeration systems, the bar type building system of the prior art needs 750-1, and 250 pounds
Ammonia, the low charge system of the prior art needs about 500 pounds of ammonia, and the present invention needs to be less than 300 pounds of ammonia, and preferably
Less than 200 pounds ammonia, more preferably less than 100 pounds of ammonia, the reporting thresholds (assuming that all ammonia in system all leak out) of EPA.It is real
On border, the ammonia of 50 tons of refrigeration systems according to the present invention, the whole amount in system can be discharged into peripheral region, without to people
Class or environment cause significantly to damage or injure.
Although the present invention is mainly described in the context that wherein ammonia is the refrigeration system of refrigerant, it is contemplated that
The present invention will also apply to the refrigeration system using other natural refrigerants (including carbon dioxide).
Description of the invention is substantially merely exemplary, thus without departing from packaged type (one or two module it is integrated
Compact systems) low refrigerant charge (that is, the refrigerant of refrigeration capacity per ton less than 10 pounds) refrigeration system design variation meaning
Figure is within the scope of the present invention.Packaged type pumping liquid-circulating refrigeration system and wherein refrigeration per ton are constituted in other ways
There is capacity 10lbs or less refrigerant, opposite any variation that specific embodiment is described herein to be not to be regarded as a departure from
The spirit and scope of the present invention being described in the accompanying claims.
Claims (6)
1. a kind of refrigeration system, comprising:
Refrigerant condenser；With
Prefabricated modularization computer room includes:
Vapor/liquid separation structure, the vapor/liquid separation structure are configured to be connected to evaporator via refrigerant pipeline
Outlet；
Coolant compressor, the coolant compressor are connected to the outlet of the separated structure via refrigerant pipeline；And
The entrance of the condenser is connected to via refrigerant pipeline；
Collection vessel, the collection vessel are 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 the vapor/liquid separation structure has be configured to connect via the entrance of refrigerant pipeline and evaporator to go out
Mouthful；
And wherein the refrigeration capacity per ton of the refrigeration system needs to be less than six pounds of refrigerant.
2. refrigeration system according to claim 1 further comprises evaporator, the evaporator be connected to the steam/
The entrance of liquid separated structure, and it is connected to the outlet of the vapor/liquid separation structure.
3. refrigeration system according to claim 2, wherein the evaporator is mounted in prefabricated modularization vaporization chamber.
4. refrigeration system according to claim 2, wherein the evaporator be mounted on it is neighbouring or prefabricated lower than described
In the refrigeration space of modularization computer room.
It further comprise going out positioned at the fluid of the vapor/liquid separation structure 5. refrigeration system according to claim 1
The recirculation pump in flow of refrigerant path between mouth and the entrance of evaporator.
6. refrigeration system according to claim 1, wherein the condenser is air-cooled condenser, the air is cooling
Condenser includes the coil pipe and fan being configured for mount on the top of the prefabricated modularization computer room.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462020271P | 2014-07-02 | 2014-07-02 | |
| US62/020,271 | 2014-07-02 | ||
| CN201580036543.1A CN106796073B (en) | 2014-07-02 | 2015-07-02 | Low charge packaged refrigeration system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580036543.1A Division CN106796073B (en) | 2014-07-02 | 2015-07-02 | Low charge packaged refrigeration system |
Publications (1)
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| CN110260545A true CN110260545A (en) | 2019-09-20 |
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| 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 |
| CN201910455918.8A Pending CN110260545A (en) | 2014-07-02 | 2015-07-02 | Low charge packaged type refrigeration system |
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| 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 |
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| EP (3) | EP4180746A1 (en) |
| CN (3) | CN111503951A (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
- 2015-07-02 CN CN201910455918.8A patent/CN110260545A/en active Pending
- 2015-07-02 EP EP22196691.4A patent/EP4180746A1/en active Pending
- 2015-07-02 EP EP20200150.9A patent/EP3869126A1/en not_active Withdrawn
- 2015-07-02 EP EP15814910.4A patent/EP3164651A4/en not_active Ceased
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3164651A4 (en) | 2018-05-02 |
| CN106796073B (en) | 2020-03-17 |
| CN106796073A (en) | 2017-05-31 |
| CN111503951A (en) | 2020-08-07 |
| EP3869126A1 (en) | 2021-08-25 |
| EP4180746A1 (en) | 2023-05-17 |
| EP3164651A2 (en) | 2017-05-10 |
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