CN102679639A - Heat pump set of freon evaporating oil cooler for recycling heat emitted from screw compressor oil cooler - Google Patents
Heat pump set of freon evaporating oil cooler for recycling heat emitted from screw compressor oil cooler Download PDFInfo
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- CN102679639A CN102679639A CN 201210023715 CN201210023715A CN102679639A CN 102679639 A CN102679639 A CN 102679639A CN 201210023715 CN201210023715 CN 201210023715 CN 201210023715 A CN201210023715 A CN 201210023715A CN 102679639 A CN102679639 A CN 102679639A
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- compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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Abstract
The invention utilizes a screw compressor with a middle air-replenishing port to form an air source heating heat pump cycle. The equipment is provided with a driving machine, a compressor with the middle air-replenishing port, an evaporator, an oil-air separator and a condenser, and is characterized by comprising a medium-pressure evaporating type oil cooler required for recycling heat released by heat oil, an air-liquid separator and first and second throttle valves required for establishing medium pressure; R134a steam generated after heat is recycled by the evaporating type oil cooler enters into the middle air-replenishing port of the compressor; with regard to a certain heating requirement, the mass flow flowing into the condenser is also fixed; and a large amount of medium-pressure R134a steam flows into the compressor, so that the consumed power for maintaining a fixed R134a steam flow entering into the condenser is reduced, the heat emitted to atmosphere by the original heat oil is recycled, the consumed work is reduced, the exhaust temperature of the compressor is reduced and the area of the evaporator for absorbing heat from atmosphere is reduced.
Description
Technical field
The present invention relates to a kind of compression air source hot pump water heater, it utilizes the heat of an evaporation oil cooler recovery recycle oil, has improved to heat usefulness, has reduced the vapor (steam) temperature that compression ends, and has reduced from the evaporator area of air heat absorption.Belong to field of air conditioning.
Background technology
Existing screw compression formula Teat pump boiler is in operation and all in compressor, sprays into a certain amount of lubricating oil to guarantee the lubricated and sealing of each moving component; Being absorbed in the heat that produces in the Compressed Gas process simultaneously makes the delivery temperature of compressing end of a period under the limit that allows; And oil must use by repetitiousness after from compression end of a period gas, separating, and could guarantee lubrication and seal and cooling effect so must this oil cooling be delivered in the compressor after but again.
Make the oil cooled structure of circulation that three kinds of modes are arranged at present:
(1) the deep fat pipe is passed the liquid storage space of condenser below, liquid R134a the outer evaporation of pipe make in managing oil cooling but, it is that liquid falls back in the reservoir again that the steam of generation rises to the condenser pipe condensed exterior.But for the heat supply unit, its condensation temperature all 55 the degree more than or higher, so this oil cooler can not use at all.
(2) with a finned aerial cooler, oil is walked in the pipe, and fan blowing of pipe external application makes oil cooling but.Referring to Fig. 1.
(3) with an oil water heat exchange device, the inlet temperature of water is used so that about oily temperature drop to 40 degree about 30 degree.Referring to Fig. 2.
Above-mentioned three kinds of modes all oil cooling but the heat of process import in the ambient air, and be not used, but the quantity of this part heat is quite big, in some unit, this heat extraction power competes to surpass 60% of driven compressor power.
Summary of the invention
The objective of the invention is to reclaim the heat that oil cooler is discharged to atmosphere, further reduce the discharging of energy resource consumption and greenhouse gases.The present invention be adopted a kind of with in the middle of the helical-lobe compressor of gas supplementing opening be main frame; The saturated R134a liquid of high pressure below the condenser in the liquid storage space gets into the evaporation oil cooler through being throttled to for the first time an intermediate pressure (should be lower than the saturation pressure 0.77Mpa of 30 degree for this intermediate pressure of R134a, thereby guarantee oil is cooled to about 40 degree), and this is a full brazing sheet fin heat exchanger; R134a is in the incomplete evaporation of one of which side; The oil cooling that makes opposite side is a stream-liquid two-phase flow in the outlet of R134a but, and this two phase flow gets into a vapour liquid separator; Top vapour gets into the middle gas supplementing opening of compressor; Following liquid makes the saturation temperature of the corresponding R134a of its pressure be lower than ambient air temperature through the throttling step-down second time, gets into evaporimeter; Evaporation is therein also absorbed heat from atmosphere, and the low-pressure steam machine that is compressed that comes out from evaporimeter sucks the low-pressure admission mouth.For a certain amount of heat demand, the high steam mass flow that compressor is sent into condenser also is certain, and this mass flow is synthetic by low-pressure steam mass flow that flows into compressor and middle pressure steam mass flow.1 kilogram low-pressure steam is compressed to mechanical power that condensing pressure consumes, and must to be compressed to the mechanical power that same condensing pressure consumes than 1 kilogram of middle pressure steam much more.So having middle pressure steam to send under the condition of gas supplementing opening in the middle of the compressor, the increase of middle pressure steam mass flow will inevitably reduce the consumption of total work done during compression.
This kind structure also has two important additional benefit:
(1) because middle pressure steam is to get into compressor with saturation temperature, it must be lower than the temperature that is compressed to this intermediate-pressure gas from low pressure, thereby help reducing the delivery temperature of final compressor.
(2) because the adding of intermediate pressure steam, so the low-pressure steam flow must correspondingly reduce, thereby the area of huge outdoor evaporimeter can reduce in proportion in design.
Description of drawings
Accompanying drawing 1 is the cold oil cooler system architecture of an existing phoenix sketch map.
1 is driving device among the figure, the 2nd, and compressor, the 3rd, gs-oil separator, the 4th, condenser, the 5th, choke valve, the 6th, wind oil cooler, the 7th, evaporimeter.
Accompanying drawing 2 is existing water-cooled oil cooler system architecture sketch mapes;
1 is driving device among the figure, the 2nd, and compressor, the 3rd, gs-oil separator, the 4th, condenser, the 5th, choke valve, the 6th, water oil cooler, the 7th, evaporimeter.
Accompanying drawing 3 is structural representations of specific embodiment of the present invention;
Among the figure 1 is driving device, the 2nd, compressor, the 3rd, gs-oil separator, the 4th, condenser, the 5th, the first throttle valve, the 6th, the evaporation oil cooler, the 7th, gas-liquid separator, 8 is second choke valves, the 9th, evaporimeter, the 10th, season triple valve, the 11st, the air flue choke valve.
The specific embodiment
Accompanying drawing 3 is structural representations of specific embodiment of the present invention.Among the figure 1 is driving device, the 2nd, and the compressor of gas supplementing opening in the middle of the band, the 3rd, gs-oil separator, the 4th, condenser; The 5th, the first throttle valve, the 6th, the vaporation-type oil cooler, the 7th, middle pressure R134a vapour liquid separator, 8 is second choke valves; The 9th, evaporimeter, the 10th, season triple valve, the 11st, the air flue choke valve.Its concrete course of work is following: the compressor 2 of gas supplementing opening in the middle of driving device 1 rotating band; The low pressure air suction mouth of compressor sucks low pressure R134a steam from the gas outlet of evaporimeter 9; Gas supplementing opening is through middle pressure R134a steam that season, triple valve 10 sucked in from vapour liquid separator 7 simultaneously; It is compressed to the condensation temperature 65 pairing saturation pressures of degree (1.89Mpa) simultaneously gets into gs-oil separator 3, high pressure R134a steam gets into condenser 4, emits latent heat; The circulating backwater that will heat heating, and itself be condensed into the saturated liquid R134a of high pressure.Hydraulic oil then gets into vaporation-type oil cooler 6, about R134a evaporative cooling to 40 degree of being pressed in the opposite side, under high pressure promotes, sprays into the low pressure inlet of compressor 2, to continue its lubrication and seal and refrigerating function.The high pressure R134a liquid of condenser 4 belows through first throttle valve 5 be throttled to 0.77Mpa (its corresponding saturation temperature 30 degree) get into evaporation oil cooler 6 produce the part evaporation with cold oil to 40 degree about; Press the vapour liquid separator 7 of R134a during the two-phase mixture of this R134a gets into then; Middle R134a gas of pressing is through the middle gas supplementing opening of triple valve 10 entering compressors 2 in season; The middle R134a liquid of pressing makes its corresponding saturation temperature be lower than environment temperature through the 8 further step-downs of second choke valve, gets into evaporimeter 9 evaporations; Heat absorption becomes steam from ambient air, gets into the low pressure suction inlet of compressor 2 from evaporimeter 9 outlets.
Outdoor temperature is raised to degree more than 20 after getting into summer, and the evaporimeter internal pressure rises, and the machine internal pressure at gas supplementing opening place can surpass the pressure of vapour liquid separator 7 in the middle of possibly causing, and this will cause the pressure of vapour liquid separator 7 to rise even lose the cooling effect to oil.The season triple valve 10 is turned to, cut off steam get in the middle of the path of gas supplementing opening, make this steam directly get into the low-pressure admission mouths of compressors 2 through air flue choke valve 11.The effect of air flue choke valve 11 be limit the steam flow of this path can not be excessive, conform with the necessary flow of heat absorption from atmosphere to guarantee to have in the evaporimeter 9.
Claims (2)
1. compression air source heat pump; Comprise driving device, compressor, gs-oil separator, evaporimeter, condenser; Press evaporation oil cooler and gas-liquid separator during its characteristic also comprises, and be to press the prerequisite first throttle valve of institute and second choke valve in guaranteeing to set up.
For this unit the operate as normal in summer it is characterized in that having installed at the middle gas supplementing opening place of compressor one season triple valve; Air supply passage in the middle of when summer, cutting off; Make R134a steam that the evaporation oil cooler produces directly through this triple valve and receive the control of steam passage choke valve to get into the air entry of compressor, guarantee evaporation oil cooler still same operate as normal under evaporator pressure rising in summer condition.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210023715 CN102679639A (en) | 2012-02-03 | 2012-02-03 | Heat pump set of freon evaporating oil cooler for recycling heat emitted from screw compressor oil cooler |
| CN2012103562976A CN103245135A (en) | 2012-02-03 | 2012-09-24 | Heat pump unit for recovering discharged heat of oil cooler of screw compressor by Freon evaporative oil cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210023715 CN102679639A (en) | 2012-02-03 | 2012-02-03 | Heat pump set of freon evaporating oil cooler for recycling heat emitted from screw compressor oil cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102679639A true CN102679639A (en) | 2012-09-19 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210023715 Pending CN102679639A (en) | 2012-02-03 | 2012-02-03 | Heat pump set of freon evaporating oil cooler for recycling heat emitted from screw compressor oil cooler |
| CN2012103562976A Pending CN103245135A (en) | 2012-02-03 | 2012-09-24 | Heat pump unit for recovering discharged heat of oil cooler of screw compressor by Freon evaporative oil cooler |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103562976A Pending CN103245135A (en) | 2012-02-03 | 2012-09-24 | Heat pump unit for recovering discharged heat of oil cooler of screw compressor by Freon evaporative oil cooler |
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| CN (2) | CN102679639A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759477B (en) * | 2014-01-07 | 2016-06-29 | 广东美芝制冷设备有限公司 | Refrigerating circulatory device |
| CN109307385B (en) * | 2018-08-31 | 2023-11-24 | 珠海格力电器股份有限公司 | Air conditioning system, compression oil supply device and control method thereof |
| CN109404279A (en) * | 2018-10-10 | 2019-03-01 | 合肥通用机械研究院有限公司 | With the cooling heat pump compressor of motor cavity and its system |
| CN109855319A (en) * | 2019-04-11 | 2019-06-07 | 江苏拓博制冷科技有限公司 | A kind of big temperature difference cooling system of oil inlet and outlet |
| CN109855321A (en) * | 2019-04-11 | 2019-06-07 | 江苏拓博制冷科技有限公司 | A kind of high-precision oil cooling system |
| CN109855320A (en) * | 2019-04-11 | 2019-06-07 | 江苏拓博制冷科技有限公司 | A kind of pair of high-temperature oil liquid carries out refrigeration cool-down unit |
| CN110206708A (en) * | 2019-06-28 | 2019-09-06 | 中煤隧道工程有限公司 | One kind being used for oil cooler and compressor link circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD137964A1 (en) * | 1978-06-02 | 1979-10-03 | Peter Kolberg | WAERMEPUMPENANLAGEN |
| CN101403386A (en) * | 2008-11-09 | 2009-04-08 | 吴家伟 | Oil cooling system used for evaporation refrigeration type condenser and screw units |
| CN101696856A (en) * | 2009-10-20 | 2010-04-21 | 无锡佳龙换热器制造有限公司 | Plate-fin heat exchanger |
| CN102052869B (en) * | 2010-11-03 | 2012-03-21 | 常州大学 | Plate bundle of U-shaped fin plate heat exchanger |
| CN202770079U (en) * | 2012-02-03 | 2013-03-06 | 吴键 | Heat pump unit of freon evaporation oil cooler recovering exhaust heat of screw compressor oil cooler |
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2012
- 2012-02-03 CN CN 201210023715 patent/CN102679639A/en active Pending
- 2012-09-24 CN CN2012103562976A patent/CN103245135A/en active Pending
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| CN103245135A (en) | 2013-08-14 |
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Application publication date: 20120919 |