CN108954914A - A kind of low ambient temperature net for air-source heat pump units - Google Patents
A kind of low ambient temperature net for air-source heat pump units Download PDFInfo
- Publication number
- CN108954914A CN108954914A CN201810899069.0A CN201810899069A CN108954914A CN 108954914 A CN108954914 A CN 108954914A CN 201810899069 A CN201810899069 A CN 201810899069A CN 108954914 A CN108954914 A CN 108954914A
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- China
- Prior art keywords
- oil
- valve
- outlet
- air
- ambient temperature
- Prior art date
- 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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B43/003—Filters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention relates to a kind of heating plants, more particularly to a kind of low ambient temperature net for air-source heat pump units, it mainly include refrigerant-cycle systems, the refrigerant-cycle systems include sequentially connected compressor, oil eliminator, condenser, throttle valve and evaporator, it further include freezing oil circulating system, the freezing oil circulating system includes oil cooler, and the import of the oil cooler and the oil discharge outlet of oil eliminator connect, and the outlet of the oil cooler and the oil return opening of compressor connect.The present invention recycles heat using oil cooler, and the heat recycled improves air energy heat exchanger heat exchange property, improve unit efficiency, realize ultralow ambient temperature stable heating for improving inlet air temperature.
Description
Technical field
The present invention relates to a kind of heating plant more particularly to a kind of low ambient temperature net for air-source heat pump units.
Background technique
For a long time, the traditional heating system of northern China is coal-burning boiler, and small scall coal-fired boiler discharge is not up to standard, and
A major reason of northern haze weather is caused, with the popularization of " coal changes electricity " policy, air source heat pump is widely used in north
Square winter heating region, but in -20 DEG C of environment temperature regions below, and when indoor heating equipment is radiator, common
Air source heat pump extracts the increasing of heat difficulty from low temperature environment, and heating capacity is caused to decay rapidly, and high-low pressure pressure difference is more than limit
System, excessive discharge temperature influence equipment normal operation.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of oil recovery cooling heat and for mentioning
The low ambient temperature net for air-source heat pump units for rising inlet air temperature, improving unit efficiency.
To achieve the above object, the present invention can be achieved by the following technical programs:
A kind of low ambient temperature net for air-source heat pump units, including refrigerant-cycle systems, the refrigerant-cycle systems packet
Sequentially connected compressor, oil eliminator, condenser, throttle valve and evaporator are included, further includes freezing oil circulating system, it is described cold
The frozen oil circulatory system includes oil cooler, and the import of the oil cooler and the oil discharge outlet of oil eliminator connect, and the oil is cooling
The outlet of device and the oil return opening of compressor connect.
Further, the windward side on the outside of evaporator is arranged in the oil cooler.
Further, shut-off valve and oil are connected in turn between the import of the oil discharge outlet and oil cooler of the oil eliminator
Filter.
Further, be connected in turn between the outlet of the oil cooler and the oil return opening of compressor essential oil filter,
Oil stream amount switch, solenoid valve, liquid-sighting glass and shut-off valve are provided with bypass electromagnetism between the inlet and outlet of the oil cooler
Valve.
Further, four-way reversing valve, the outlet of the oil eliminator are provided between the oil eliminator and condenser
It is connect with the D interface of four-way reversing valve, the import of the C interface and condenser of the four-way reversing valve connects, the four-way commutation
The outlet of the E interface and evaporator of valve connects, and pressure is connected between the outlet of the oil eliminator and the D interface of four-way reversing valve
Power maintains valve.
Further, liquid storage device device for drying and filtering and economizer, institute are connected between the condenser and throttle valve in turn
It states and is connected with shut-off valve between condenser and liquid storage device, the device for drying and filtering outlet is divided into main hydraulic pipe branch and economizer branch
Road, main hydraulic pipe branch are directly connect with the T1 import of economizer, and economizer branch passes sequentially through economizer solenoid valve and economizer
It is connect after throttle valve with the T3 import of economizer, the outlet T2 of the economizer is connect with throttle valve import, the outlet of throttle valve
Connect with the import of evaporator, the E mouth of the outlet of the evaporator and four-way reversing valve connects, the outlet T4 of the economizer with
The economizer inlet of compressor connects.
Further, the S mouth of the four-way reversing valve is connect with gas-liquid separator import, the outlet of the gas-liquid separator
It is connect with the air entry of compressor.
Further, shut-off valve is connected between the liquid storage device and device for drying and filtering.
Further, the evaporator is provided with axial flow blower.
Further, the compressor be rolling rotor-type, vortex, piston type, screw compressor it is any；Institute
Stating oil cooler is finned or micropassage type；The condenser be shell-tube type, bushing type, plate-type condenser it is any；Institute
Stating evaporator is finned or micropassage type；The throttle valve is heating power expansion valve or electric expansion valve.
Compared with prior art, the present invention recycles heat using oil cooler, and the heat recycled is for improving air inlet temperature
Degree promotes unit efficiency, realizes ultralow ambient temperature stable heating, meets the heating demands of China northeast region, adopt simultaneously
With finned oil cooler, heat exchanger bursting by freezing under bad weather is prevented.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
In figure: 1, compressor；2, oil eliminator；3, four-way reversing valve；4, condenser；5, liquid storage device；6, economizer；7, it saves
Flow valve；8, evaporator；9, oil cooler；10, gas-liquid separator；11, pressure maintenance valve；12, shut-off valve；13, device for drying and filtering；
14, economizer solenoid valve；15, economizer throttle valve；16, bypass solenoid valve；17, axial flow blower；18, essential oil filter；19, oily
Flow switch；20, solenoid valve；21, liquid-sighting glass；22, oil strainer.
Specific embodiment
Below in conjunction with attached drawing and specific embodiment, the present invention is further illustrated:
As shown in Figure 1, low ambient temperature net for air-source heat pump units of the present invention, including refrigerant-cycle systems and cold
The frozen oil circulatory system.
Refrigerant-cycle systems include sequentially connected compressor 1, oil eliminator 2, condenser 4, throttle valve 7 and evaporator
8, four-way reversing valve 3, the outlet of oil eliminator 2 and the D interface of four-way reversing valve 3 are provided between oil eliminator 2 and condenser 4
Connection, the C interface of four-way reversing valve 3 are connect with the import of condenser 4, the outlet of the E interface and evaporator 8 of four-way reversing valve 3
Connection, is connected with pressure maintenance valve 11 between the outlet of oil eliminator 2 and the D interface of four-way reversing valve 3.Condenser 4 and throttling
It is connected with 5 device for drying and filtering 13 of liquid storage device and economizer 6 between valve 7 in turn, cut-off is connected between condenser 4 and liquid storage device 5
Valve 12, the outlet of device for drying and filtering 13 are divided into 6 branch of main hydraulic pipe branch and economizer, T1 of the main hydraulic pipe branch directly with economizer 6
Import connection, 6 branch of economizer pass sequentially through the T3 import after economizer solenoid valve 14 and economizer throttle valve 15 with economizer 6
The outlet T2 of connection, economizer 6 is connect with 7 import of throttle valve, and the outlet of throttle valve 7 is connect with the import of evaporator 8, evaporator
8 outlet is connect with the E of four-way reversing valve 3 mouth, and the outlet T4 of economizer 6 is connect with the economizer inlet of compressor 1.Four-way changes
It is connect to the S mouth of valve 3 with 10 import of gas-liquid separator, the outlet of gas-liquid separator 10 is connect with the air entry of compressor 1.Liquid storage
Shut-off valve 12 is connected between device 5 and device for drying and filtering 13.Evaporator 8 is provided with axial flow blower 17, for enhancing heat exchange.
The working principle of refrigerant-cycle systems:
When warming oneself in winter, condenser 4 is entered by the high-pressure gaseous refrigerant that compressor 1 is discharged, refrigerant is put when condensing
Heat out reaches heating purpose, condensed liquid refrigerant flows through 7 reducing pressure by regulating flow of throttle valve by exchanging heat with air or water
Entering evaporator 8 afterwards, absorbs external environment heat and evaporate, the gaseous refrigerant of low-temp low-pressure is sucked by compressor 1 after evaporation,
Complete heating circulation.To realize refrigerating function, refrigeration work position is turned to using four-way reversing valve 3, by condenser 4 and evaporation
The exchange function of device 8.
Freezing oil circulating system includes oil cooler 9, and the import of oil cooler 9 is connect with the oil discharge outlet of oil eliminator 2, oil
The outlet of cooler 9 is connect with the oil return opening of compressor 1.The outside of evaporator 8 is arranged in oil cooler 9, can specifically be set to and steam
On the windward side for sending out device 8, the heat of refrigeration oil discharge can effectively blow to evaporator 8.The oil discharge outlet of oil eliminator 2 and oil are cold
But shut-off valve 12 and oil strainer 22 are connected in turn between the import of device 9.The outlet of oil cooler 9 and the oil return of compressor 1
It is connected with essential oil filter 18, oil stream amount switch 19, solenoid valve 20, liquid-sighting glass 21 and shut-off valve 12 between mouthful in turn, oil is cooling
Bypass solenoid valve 16 is provided between the inlet and outlet of device 9.The heat utilization that refrigeration oil is discharged is got up, for improving air inlet
Temperature can improve low circumstance temperature heat pump working condition, and after improving heat source temperature, unit performance on the one hand can be improved, on the other hand
Also the stable operation of unit has been ensured.
Preferably, compressor 1 be rolling rotor-type, vortex, piston type, screw compressor 1 it is any；Oil is cooling
Device 9 is finned or micropassage type；Condenser 4 be shell-tube type, bushing type, plate-type condenser 4 it is any；Evaporator 8 is wing
Chip or micropassage type；Throttle valve 7 is heating power expansion valve or electric expansion valve.
Low ambient temperature net for air-source heat pump units of the present invention can be monoblock type, or split type；Unit
It can be frequency conversion type, frequency conversion+determine frequency combined type, or fixed-frequency-type.
At a temperature of similar -25 DEG C of ultralow environment below, conventional low ambient temperature net for air-source heat pump units performance declines
Subtract larger, unit has been not normally functioning, and even uses single machine two-stage or Cascade type heat pump system, still has bad weather not
The drawbacks of energy stable operation.The invention goes the opposite way, by the heat of recycling refrigeration oil discharge, is promoted around evaporator 8
Local temperature improves 8 working condition of evaporator, and evaporator more than 8 absorbs 1 part of heat, and by the acting of compressor 1, condenser 4 can
To supply 2 parts or 3 parts of heats, than simply can more improve unit efficiency using oily cold and hot amount, by improving unit operating condition,
Keep unit operation more reliable and more stable.
For those skilled in the art, it is various corresponding that other can be made according to above technical scheme and design
Change and deformation, and all these change and modification all should belong within the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of low ambient temperature net for air-source heat pump units, including refrigerant-cycle systems, the refrigerant-cycle systems include
Sequentially connected compressor, oil eliminator, condenser, throttle valve and evaporator, it is characterised in that: further include refrigeration oil cyclic system
System, the freezing oil circulating system includes oil cooler, and the import of the oil cooler and the oil discharge outlet of oil eliminator connect, institute
The oil return opening of the outlet and compressor of stating oil cooler connects.
2. low ambient temperature net for air-source heat pump units according to claim 1, it is characterised in that: the oil cooler setting
Windward side on the outside of evaporator.
3. low ambient temperature net for air-source heat pump units according to claim 1 or 2, it is characterised in that: the oil eliminator
Oil discharge outlet and oil cooler import between be connected with shut-off valve and oil strainer in turn.
4. low ambient temperature net for air-source heat pump units according to claim 3, it is characterised in that: the oil cooler goes out
Essential oil filter, oil stream amount switch, solenoid valve, liquid-sighting glass and shut-off valve are connected in turn between mouth and the oil return opening of compressor,
Bypass solenoid valve is provided between the inlet and outlet of the oil cooler.
5. low ambient temperature net for air-source heat pump units according to claim 1 or 2, it is characterised in that: the oil eliminator
Four-way reversing valve is provided between condenser, the outlet of the oil eliminator and the D interface of four-way reversing valve connect, and described four
The import of the C interface and condenser of logical reversal valve connects, and the outlet of the E interface and evaporator of the four-way reversing valve connects, institute
It states and is connected with pressure maintenance valve between the outlet of oil eliminator and the D interface of four-way reversing valve.
6. low ambient temperature net for air-source heat pump units according to claim 5, it is characterised in that: the condenser and throttling
It is connected with liquid storage device device for drying and filtering and economizer between valve in turn, is connected with shut-off valve between the condenser and liquid storage device,
The device for drying and filtering outlet is divided into main hydraulic pipe branch and economizer branch, and main hydraulic pipe branch directly connects with the T1 import of economizer
It connects, economizer branch is connect after passing sequentially through economizer solenoid valve and economizer throttle valve with the T3 import of economizer, the warp
The outlet T2 of Ji device is connect with throttle valve import, and the outlet of throttle valve and the import of evaporator connect, the outlet of the evaporator
It is connect with the E of four-way reversing valve mouth, the outlet T4 of the economizer is connect with the economizer inlet of compressor.
7. low ambient temperature net for air-source heat pump units according to claim 6, it is characterised in that: the four-way reversing valve
S mouthfuls connect with gas-liquid separator import, and the outlet of the gas-liquid separator and the air entry of compressor connect.
8. low ambient temperature net for air-source heat pump units according to claim 6, it is characterised in that: the liquid storage device and drying
Shut-off valve is connected between filter.
9. low ambient temperature net for air-source heat pump units according to claim 7, it is characterised in that: the evaporator is provided with
Axial flow blower.
10. low ambient temperature net for air-source heat pump units according to claim 6, it is characterised in that: the compressor is rolling
Turn minor, vortex, piston type, screw compressor it is any；The oil cooler is finned or micropassage type；Institute
State condenser be shell-tube type, bushing type, plate-type condenser it is any；The evaporator is finned or micropassage type；It is described
Throttle valve is heating power expansion valve or electric expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810899069.0A CN108954914A (en) | 2018-08-08 | 2018-08-08 | A kind of low ambient temperature net for air-source heat pump units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810899069.0A CN108954914A (en) | 2018-08-08 | 2018-08-08 | A kind of low ambient temperature net for air-source heat pump units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108954914A true CN108954914A (en) | 2018-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810899069.0A Pending CN108954914A (en) | 2018-08-08 | 2018-08-08 | A kind of low ambient temperature net for air-source heat pump units |
Country Status (1)
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3759348A (en) * | 1971-11-08 | 1973-09-18 | Maekawa Seisakusho Kk | Method of compressing chlorine gas |
| JPH06123500A (en) * | 1992-10-12 | 1994-05-06 | Hitachi Ltd | Freezing apparatus |
| JPH07190520A (en) * | 1993-12-27 | 1995-07-28 | Kobe Steel Ltd | Freezer |
| JPH1137580A (en) * | 1997-07-22 | 1999-02-12 | Kobe Steel Ltd | Screw type freezer |
| JPH11325648A (en) * | 1998-05-12 | 1999-11-26 | Tokyo Gas Co Ltd | Engine-driven compression refrigerating machine |
| JP2007107771A (en) * | 2005-10-12 | 2007-04-26 | Matsushita Electric Ind Co Ltd | Refrigeration cycle device |
| JP2008170118A (en) * | 2007-01-15 | 2008-07-24 | Mitsubishi Electric Corp | Heat pump type equipment |
| CN101910756A (en) * | 2008-01-17 | 2010-12-08 | 开利公司 | Refrigerant vapor compression system with lubricant cooler |
| CN106196382A (en) * | 2016-08-31 | 2016-12-07 | 南京五洲制冷集团有限公司 | Ultralow ambient temperature air source source pump |
| CN108131860A (en) * | 2018-02-02 | 2018-06-08 | 北京中科华誉热泵设备制造有限公司 | A kind of ultra-low temperature air source heat pump based on single machine compression with double stage machine |
| CN208635376U (en) * | 2018-08-08 | 2019-03-22 | 广东欧亚制冷设备制造有限公司 | A kind of low ambient temperature net for air-source heat pump units |
-
2018
- 2018-08-08 CN CN201810899069.0A patent/CN108954914A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3759348A (en) * | 1971-11-08 | 1973-09-18 | Maekawa Seisakusho Kk | Method of compressing chlorine gas |
| JPH06123500A (en) * | 1992-10-12 | 1994-05-06 | Hitachi Ltd | Freezing apparatus |
| JPH07190520A (en) * | 1993-12-27 | 1995-07-28 | Kobe Steel Ltd | Freezer |
| JPH1137580A (en) * | 1997-07-22 | 1999-02-12 | Kobe Steel Ltd | Screw type freezer |
| JPH11325648A (en) * | 1998-05-12 | 1999-11-26 | Tokyo Gas Co Ltd | Engine-driven compression refrigerating machine |
| JP2007107771A (en) * | 2005-10-12 | 2007-04-26 | Matsushita Electric Ind Co Ltd | Refrigeration cycle device |
| JP2008170118A (en) * | 2007-01-15 | 2008-07-24 | Mitsubishi Electric Corp | Heat pump type equipment |
| CN101910756A (en) * | 2008-01-17 | 2010-12-08 | 开利公司 | Refrigerant vapor compression system with lubricant cooler |
| CN106196382A (en) * | 2016-08-31 | 2016-12-07 | 南京五洲制冷集团有限公司 | Ultralow ambient temperature air source source pump |
| CN108131860A (en) * | 2018-02-02 | 2018-06-08 | 北京中科华誉热泵设备制造有限公司 | A kind of ultra-low temperature air source heat pump based on single machine compression with double stage machine |
| CN208635376U (en) * | 2018-08-08 | 2019-03-22 | 广东欧亚制冷设备制造有限公司 | A kind of low ambient temperature net for air-source heat pump units |
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