CN109028626A - A kind of high accumulation energy type air-cooled screw unit - Google Patents
A kind of high accumulation energy type air-cooled screw unit Download PDFInfo
- Publication number
- CN109028626A CN109028626A CN201810662277.9A CN201810662277A CN109028626A CN 109028626 A CN109028626 A CN 109028626A CN 201810662277 A CN201810662277 A CN 201810662277A CN 109028626 A CN109028626 A CN 109028626A
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- China
- Prior art keywords
- heat exchanger
- inlet
- outlet
- economizer
- oil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of high accumulation energy type air-cooled screw unit of the invention, the liquid outlet of valve port c two groups of finned heat exchanger components of connection of four-way reversing valve, every group of finned heat exchanger component is composed in parallel by No. four finned heat exchangers, the major loop outlet of the inlet connection economizer of two groups of finned heat exchanger components, the refrigerant exit of the major loop import connection case tube heat exchanger of economizer, the spray circuits import of economizer and the major loop of economizer are exported and are connected, the refrigerant suction inlet of the spray circuits outlet connecting screw compressor of economizer, the coolant outlet port of connecting screw compressor connects the inlet of two groups of finned heat exchanger components.The beneficial effects of the present invention are: the present invention can realize the refrigeration and heat-production functions of unit at a temperature of low temperature environment, it ensure that safe and reliable property when compressor start, operation, improve COP value when unit heating operation.
Description
Technical field
The present invention relates to a kind of high accumulation energy type air-cooled screw units.
Background technique
Currently, the limiting value of common screw compressor evaporating temperature is -15 DEG C, and at -5 DEG C of environment temperature, unit evaporation
Temperature can generally reach this limiting value, and applicable ambient temperature range is -7 DEG C ~ 43 DEG C.And low-temperature air-cooling water chiller/heater
The use environment temperature range of group is -20 DEG C ~ 43 DEG C, for common screw compressor, if not doing innovation optimization in system is
This requirement can not be reached, the improvement for carrying out structure for common screw compressor at present not can guarantee compressor generally and open
Safe and reliable property when moving, running, can not improve COP value when unit heating operation.
Summary of the invention
To solve the above technical deficiency, the present invention provides one kind completes the function that freezes and heat in low temperature environment
Can, and the high accumulation energy type air-cooled screw unit of stable and safe in operation.
The present invention is achieved by the following measures:
A kind of high accumulation energy type air-cooled screw unit of the invention, including gas-liquid separator, oil strainer, helical-lobe compressor, fin
Heat exchanger, economizer, case tube heat exchanger, oil cooler, oil eliminator and four-way reversing valve, the valve port c of the four-way reversing valve
The liquid outlet of two groups of finned heat exchanger components is connected, every group of finned heat exchanger component is composed in parallel by No. four finned heat exchangers, and two
The major loop outlet of the inlet connection economizer of group finned heat exchanger component, the major loop import connection package heat exchange of economizer
The refrigerant exit of device, the spray circuits import of economizer and the major loop of economizer are exported and are connected, and the spray circuits of economizer go out
The coolant outlet port of the refrigerant suction inlet I of mouth connecting screw compressor, connecting screw compressor connects two groups of finned heat exchanger groups
The inlet of part；
The refrigerant exit connection oil of the refrigerant inlet of the valve port b connection case tube heat exchanger of four-way reversing valve, case tube heat exchanger is cooling
The refrigerant inlet of device, the refrigerant suction inlet I of the refrigerant exit connecting screw compressor of oil cooler, the oil circuit import of oil cooler
The oil outlet of oil eliminator, the oil inlet of the oil circuit outlet connecting screw compressor of oil cooler are connected, helical-lobe compressor goes out
The oil inlet of hydraulic fluid port connection oil eliminator；
The import of the valve port d connection gas-liquid separator of four-way reversing valve, the gas outlet of the gas-liquid separator and liquid outlet are common
The refrigerant suction inlet II of connecting screw compressor, the exhaust outlet of the valve port a connection oil eliminator of four-way reversing valve；
The pipe of the refrigerant inlet connection of the spray circuits import and oil cooler of the inlet, economizer of the finned heat exchanger
Road is provided with thermostat valve, on the pipeline that the refrigerant exit of the case tube heat exchanger is connected with the refrigerant inlet of case tube heat exchanger
It is provided with electrical ball valve, valve port a, b of four-way reversing valve are connected to two-by-two with c, d or valve port a, d and b, the c of four-way reversing valve
It is connected to two-by-two；
Further include fused salt heat storage can, two groups of heat exchange coils are provided in the fused salt heat storage can, are filled in fused salt heat storage can molten
Salt, wherein the inlet and outlet of one group of heat exchange coil pass through heat exchanger with the water outlet of case tube heat exchanger and water inlet respectively
It is connected, the inlet and outlet of another group of heat exchange coil pass through piping connection hot cell.
Defrosting heat exchanger fin is removably connected with around above-mentioned finned heat exchanger, the defrosting heat exchanger fin exchanges heat close to fin
The inlet and outlet of device, the heat exchanger fin that defrosts are connected with the heat exchange coil in fused salt heat storage can by the pipeline with valve, should
Heat exchange coil is also connected with hot cell.
Electric heater is provided in above-mentioned fused salt heat storage can.
The beneficial effects of the present invention are: the present invention can realize the refrigeration of unit at a temperature of low temperature environment
And heat-production functions, it ensure that safe and reliable property when compressor start, operation, improve COP when unit heating operation
Value.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Wherein: 1 finned heat exchanger, 2 gas-liquid separators, 3 case tube heat exchangers, 4 electrical ball valves, 5 four-way reversing valves, 6 screw rods
Compressor, 7 economizers, 8 oil coolers, 9 oil eliminators, 10 fused salt heat storage cans, 11 defrosting heat exchanger fins.
Specific embodiment
Further detailed description is done to the present invention with reference to the accompanying drawing:
As shown in Figure 1, a kind of high accumulation energy type air-cooled screw unit of the invention, including gas-liquid separator 2, oil strainer, screw rod
Compressor 6, finned heat exchanger 1, economizer 7, case tube heat exchanger 3, oil cooler 8, oil eliminator 9 and four-way reversing valve 5, four-way
The liquid outlet of valve port c two groups of 1 components of finned heat exchanger of connection of reversal valve 5, every group of 1 component of finned heat exchanger are changed by four road fins
Hot device 1 composes in parallel, the major loop outlet of the inlet connection economizer 7 of two groups of 1 components of finned heat exchanger, the master of economizer 7
Circuit inlet connects the refrigerant exit of case tube heat exchanger 3, and the spray circuits import of economizer 7 and the major loop of economizer 7 export
Connection, the refrigerant suction inlet I of the spray circuits outlet connecting screw compressor 6 of economizer 7, the refrigerant of connecting screw compressor 6
Outlet connects the inlet of two groups of 1 components of finned heat exchanger.
The refrigerant exit of the refrigerant inlet of the valve port b connection case tube heat exchanger 3 of four-way reversing valve 5, case tube heat exchanger 3 connects
Connect the refrigerant inlet of oil cooler 8, the refrigerant suction inlet I of the refrigerant exit connecting screw compressor 6 of oil cooler 8, oil cooling
The oil outlet of the oil circuit import connection oil eliminator 9 of device 8, the oil inlet of the oil circuit outlet connecting screw compressor 6 of oil cooler 8
Mouthful, the oil inlet of the oil outlet connection oil eliminator 9 of helical-lobe compressor 6；
The import of the valve port d connection gas-liquid separator 2 of four-way reversing valve 5, the gas outlet of gas-liquid separator 2 and liquid outlet connect jointly
Connect the refrigerant suction inlet II of helical-lobe compressor 6, the exhaust outlet of the valve port a connection oil eliminator 9 of four-way reversing valve 5；Fin heat exchange
It is provided on the pipeline of the refrigerant inlet connection of the spray circuits import and oil cooler 8 of the inlet, economizer 7 of device 1
Thermostat valve is provided with electrical ball valve on the pipeline that the refrigerant exit of case tube heat exchanger 3 is connected with the refrigerant inlet of case tube heat exchanger 3
4, valve port a, b of four-way reversing valve 5 are connected to two-by-two with c, d or valve port a, d of four-way reversing valve 5 are connected to two-by-two with b, c.This
Invention further includes fused salt heat storage can 10, and two groups of heat exchange coils are provided in fused salt heat storage can 10, are filled in fused salt heat storage can 10
Fused salt, wherein the inlet and outlet of one group of heat exchange coil are respectively with the water outlet of case tube heat exchanger 3 and water inlet by changing
Hot device is connected, and the inlet and outlet of another group of heat exchange coil pass through piping connection hot cell.Around finned heat exchanger 1
It is removably connected with defrosting heat exchanger fin 11, defrosting heat exchanger fin 11 water inlet for the heat exchanger fin 11 that defrosts and goes out close to finned heat exchanger 1
The mouth of a river is connected with the heat exchange coil in fused salt heat storage can 10 by the pipeline with valve, which is also connected with hot cell
It connects.Electric heater is provided in fused salt heat storage can 10.
Its working principle is that: liquid refrigerant absorbs external heat in finned heat exchanger 1, and gasification commutates by four-way
Valve port c, d of valve 5 enter gas-liquid separator 2, separate gas-liquid, and gas enters screw rod through the refrigerant suction inlet II of helical-lobe compressor 6
Compressor 6 converges by economizer 7 and the reflux medium temperature refrigerant gas of oil cooler 8, and Gas-supplying enthalpy-increasing is high through Gas-supplying enthalpy-increasing high temperature
Body of calming the anger through oil eliminator 9 isolates high temperature oil, enters shell-and-tube heat exchanger 3 by valve port a, b of four-way reversing valve 5, heat release,
After refrigerant comes out from shell-and-tube heat exchanger 3, a part enters oil cooler 8 and absorbs heat in oil, and heating is flowed by gas-liquid separator 2
Enter refrigerant liquid in helical-lobe compressor 6, become refrigerant liquid after the completion of heat release, then finned heat exchanger 1 is gone to absorb in air
Heat.Another part refrigerant come out from shell-and-tube heat exchanger 3 enters economizer 7, heat after the refrigerant in economizer 7 at
For refrigerant liquid, refrigerant liquid in the heat absorption of finned heat exchanger 1 or compensation economizer 7 is flowed back to.By oil cooler 8 and economizer
The refrigerant that the 7 refrigerant suction inlets I through helical-lobe compressor 6 enter helical-lobe compressor 6 is in the state of coexistence of gas and liquid, a part system
Refrigerant gas is used as Gas-supplying enthalpy-increasing, and another part refrigerant liquid is used as to the system for flowing into helical-lobe compressor 6 by gas-liquid separator 2
The heating of cryogen liquid.Helical-lobe compressor 6 plays the role of preheating to refrigerant, the system after the heat release that shell-and-tube heat exchanger 3 comes out
Cryogen absorbs 8 heat of oil cooler, pre- warm refrigerant.The refriger-ant section that shell-and-tube heat exchanger 3 comes out enters economizer 7, preheats
Refrigerant in economizer 7, subsequently into 6 Gas-supplying enthalpy-increasing of helical-lobe compressor, refrigerant after cooling can be returned directly to fin and change
Hot device 1 absorbs heat, and also returns to finned heat exchanger 1 from 6 the inside some refrigerant of helical-lobe compressor, the hot oil in oil eliminator 9, through oil
Cooler 8 cool down after flow back to helical-lobe compressor 6, by helical-lobe compressor 6 mixing from finned heat exchanger 1 middle warm refrigerant and warp
The refrigerant of the Gas-supplying enthalpy-increasing effect of Ji device 7 is compressed, and Gas-supplying enthalpy-increasing is completed.
Water in shell-and-tube heat exchanger 3 absorbs the heat that refrigerant is released, then water, which is heated, to be flowed into fused salt heat storage can 10
Heat exchange coil, the fused salt of fused salt heat storage can 10 is heated, and heat storage is got up, when needed can to hot cell into
Row heat supply.If finned heat exchanger 1 has frost, heat that fused salt in fused salt heat storage can 10 stores can use to defrosting heat exchanger fin
11 heat supplies, to remove the frost on finned heat exchanger 1.
The above is only the preferred embodiment of this patent, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the art of this patent principle, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as the protection scope of this patent.
Claims (3)
1. a kind of high accumulation energy type air-cooled screw unit, including gas-liquid separator, oil strainer, helical-lobe compressor,
Finned heat exchanger, economizer, case tube heat exchanger, oil cooler, oil eliminator and four-way reversing valve, it is characterised in that: institute
The liquid outlet of valve port c two groups of finned heat exchanger components of connection of four-way reversing valve is stated, every group of finned heat exchanger component is by four road wings
Piece heat exchanger composes in parallel, the major loop outlet of the inlet connection economizer of two groups of finned heat exchanger components, the master of economizer
Circuit inlet connects the refrigerant exit of case tube heat exchanger, and the spray circuits import of economizer and the major loop of economizer export and connect
It connects, the refrigerant suction inlet I of the spray circuits outlet connecting screw compressor of economizer, the coolant outlet port of connecting screw compressor
Connect the inlet of two groups of finned heat exchanger components；
The refrigerant exit connection oil of the refrigerant inlet of the valve port b connection case tube heat exchanger of four-way reversing valve, case tube heat exchanger is cooling
The refrigerant inlet of device, the refrigerant suction inlet I of the refrigerant exit connecting screw compressor of oil cooler, the oil circuit import of oil cooler
The oil outlet of oil eliminator, the oil inlet of the oil circuit outlet connecting screw compressor of oil cooler are connected, helical-lobe compressor goes out
The oil inlet of hydraulic fluid port connection oil eliminator；
The import of the valve port d connection gas-liquid separator of four-way reversing valve, the gas outlet of the gas-liquid separator and liquid outlet are common
The refrigerant suction inlet II of connecting screw compressor, the exhaust outlet of the valve port a connection oil eliminator of four-way reversing valve；
The pipe of the refrigerant inlet connection of the spray circuits import and oil cooler of the inlet, economizer of the finned heat exchanger
Road is provided with thermostat valve, on the pipeline that the refrigerant exit of the case tube heat exchanger is connected with the refrigerant inlet of case tube heat exchanger
It is provided with electrical ball valve, valve port a, b of four-way reversing valve are connected to two-by-two with c, d or valve port a, d and b, the c of four-way reversing valve
It is connected to two-by-two；
Further include fused salt heat storage can, two groups of heat exchange coils are provided in the fused salt heat storage can, are filled in fused salt heat storage can molten
Salt, wherein the inlet and outlet of one group of heat exchange coil pass through heat exchanger with the water outlet of case tube heat exchanger and water inlet respectively
It is connected, the inlet and outlet of another group of heat exchange coil pass through piping connection hot cell.
2. high accumulation energy type air-cooled screw unit according to claim 1, it is characterised in that: removable around the finned heat exchanger
Unload and be connected with defrosting heat exchanger fin, the defrosting heat exchanger fin close to finned heat exchanger, the inlet and outlet for the heat exchanger fin that defrosts with
Heat exchange coil in fused salt heat storage can is connected by the pipeline with valve, which is also connected with hot cell.
3. high accumulation energy type air-cooled screw unit according to claim 1, it is characterised in that: be provided in the fused salt heat storage can
Electric heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810662277.9A CN109028626A (en) | 2018-06-25 | 2018-06-25 | A kind of high accumulation energy type air-cooled screw unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810662277.9A CN109028626A (en) | 2018-06-25 | 2018-06-25 | A kind of high accumulation energy type air-cooled screw unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109028626A true CN109028626A (en) | 2018-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810662277.9A Pending CN109028626A (en) | 2018-06-25 | 2018-06-25 | A kind of high accumulation energy type air-cooled screw unit |
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| CN (1) | CN109028626A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571132A (en) * | 2008-04-28 | 2009-11-04 | 上海瀚艺冷冻机械有限公司 | Oil cooling device in screw compressor |
| CN103499162A (en) * | 2013-09-14 | 2014-01-08 | 江西清华泰豪三波电机有限公司 | Low-temperature air-cooled screw cold and hot water unit |
| CN106225043A (en) * | 2016-07-20 | 2016-12-14 | 国网北京市电力公司 | Heat pump and heating system |
| CN206094374U (en) * | 2016-08-31 | 2017-04-12 | 浙江创能新能源科技有限公司 | Components of a whole that can function independently low temperature frequency conversion trigeminy supplies heat pump system |
| CN107131547A (en) * | 2017-03-15 | 2017-09-05 | 北京万机汇机电工程技术有限公司 | A kind of fused salt heat storage type heating system |
| CN107192170A (en) * | 2017-06-09 | 2017-09-22 | 新奥泛能网络科技股份有限公司 | Air source heat pump system and its evaporator and control method |
| CN207035571U (en) * | 2017-08-01 | 2018-02-23 | 夏方泉 | A kind of ultralow-temperature air energy source pump double-pressing machine |
-
2018
- 2018-06-25 CN CN201810662277.9A patent/CN109028626A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571132A (en) * | 2008-04-28 | 2009-11-04 | 上海瀚艺冷冻机械有限公司 | Oil cooling device in screw compressor |
| CN103499162A (en) * | 2013-09-14 | 2014-01-08 | 江西清华泰豪三波电机有限公司 | Low-temperature air-cooled screw cold and hot water unit |
| CN106225043A (en) * | 2016-07-20 | 2016-12-14 | 国网北京市电力公司 | Heat pump and heating system |
| CN206094374U (en) * | 2016-08-31 | 2017-04-12 | 浙江创能新能源科技有限公司 | Components of a whole that can function independently low temperature frequency conversion trigeminy supplies heat pump system |
| CN107131547A (en) * | 2017-03-15 | 2017-09-05 | 北京万机汇机电工程技术有限公司 | A kind of fused salt heat storage type heating system |
| CN107192170A (en) * | 2017-06-09 | 2017-09-22 | 新奥泛能网络科技股份有限公司 | Air source heat pump system and its evaporator and control method |
| CN207035571U (en) * | 2017-08-01 | 2018-02-23 | 夏方泉 | A kind of ultralow-temperature air energy source pump double-pressing machine |
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| PB01 | Publication | ||
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Application publication date: 20181218 |