CN104501460B - A kind of increasing enthalpy hot pump in low temp - Google Patents
A kind of increasing enthalpy hot pump in low temp Download PDFInfo
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- CN104501460B CN104501460B CN201410810194.1A CN201410810194A CN104501460B CN 104501460 B CN104501460 B CN 104501460B CN 201410810194 A CN201410810194 A CN 201410810194A CN 104501460 B CN104501460 B CN 104501460B
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- vortex tube
- enthalpy
- hot junction
- air inlet
- increasing
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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
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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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/31—Expansion 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
The invention discloses a kind of increasing enthalpy hot pump in low temp, including enthalpy-increasing compressor, vortex tube, vaporizer, condenser, controller, the first temperature sensor, first pressure sensor；Enthalpy-increasing compressor air vent is connected with condenser air inlet, and condenser gas outlet is connected with vortex tube air inlet, and vortex tube hot junction is connected with enthalpy-increasing compressor gas supplementing opening；Vortex tube cold end is connected with evaporator air inlet, and evaporator discharge mouth is connected with enthalpy-increasing compressor air inlet；First temperature sensor is used for detecting that vaporizer air outlet temperature, first pressure sensor are used for detecting vaporizer outlet pressure；Vortex tube includes hot junction electromagnetic valve, and hot junction electromagnetic valve is arranged on vortex tube hot junction position, for controlled vortex flow pipe coefficient of refrigerating performance；Controller controls hot junction electromagnetism valve opening according to the first temperature sensor and first pressure sensor signal.The increasing enthalpy hot pump in low temp that the present invention is provided, reduces system irreversible loss, improves efficiency and the heating capacity of blood circulation, energy saving.
Description
Technical field
The present invention relates to HVAC technical field, particularly a kind of increasing enthalpy hot pump in low temp.
Background technology
Gas-supplying enthalpy-increasing source pump replaces Conventional press using the screw compressor with auxilairy air intake, except tradition
Outside critical piece in net for air-source heat pump units, a subcooler is increased.The workflow of Gas-supplying enthalpy-increasing source pump is as follows,
It is divided into two-way from condenser sub-cooled liquid refrigerant out:Main road is refrigerating circuit, and bypass is QI invigorating loop.The refrigeration of main road
Agent liquid is directly entered subcooler；Subcooler, this two parts system are entered after the expanded valve reducing pressure by regulating flow of the refrigerant liquid of bypass
In subcooler after heat exchange, the cold-producing medium heat absorption of bypass is vaporizated into gaseous refrigerant and is inhaled by compressor vapour injection mouth cryogen
Enter, the cold-producing medium of main road is inhaled by compressor after vaporizing in vaporizer by supercool again, entrance vaporizer after expanded valve blood pressure lowering
QI KOU is sucked.Main road cold-producing medium mixes in compressor operating intracavity with the cold-producing medium of bypass after one stage of compression, through further
Compressor is discharged after compression, condenser is entered, is so constituted complete circulation.
Gas-supplying enthalpy-increasing source pump is the compression process of quasi- secondary compression heat pump unit, by low-pressure stage compression process, QI invigorating
Process and hiigh pressure stage compression process composition, the cold-producing medium of bypass are vaporizated into the refrigerant gas of low-temp low-pressure after subcooler,
Mix with main road cold-producing medium, the temperature of main road cold-producing medium can be cooled down, make the initial temperature of quasi- two-stage compression process relatively low, will pressure
The delivery temperature of contracting machine is controlled in a suitable scope；And at low ambient temperatures, the flow of main road cold-producing medium is low, passes through
The saturated vapor of bypass cold-producing medium being filled into, increases compressor flowrate, so as to increased the refrigerant flow of whole system, improving machine
The operating condition of group, improves the heating capacity of unit.
There is frictional dissipation using expansion valve reducing pressure by regulating flow during throttling in existing heat pump, so entropy must increase after throttling,
But the enthalpy before and after throttling is constant.Restriction loss can be caused very big, the efficiency of heat pump circulating system is low, enters additionally by subcooler
Row heat exchange, heat exchange efficiency are low.When outdoor temperature is less than 0 degree, the degree of superheat of vaporizer is low, heating high energy consumption.
Content of the invention
In view of this, the present invention proposes a kind of increasing enthalpy hot pump in low temp, low with the efficiency for solving the problems, such as blood circulation.
On the one hand, the invention provides a kind of increasing enthalpy hot pump in low temp, including enthalpy-increasing compressor, vortex tube, vaporizer, condensation
Device, controller, the first temperature sensor, first pressure sensor；Enthalpy-increasing compressor air vent is connected with condenser air inlet, cold
Condenser gas outlet is connected with vortex tube inlet end, and vortex tube hot junction is connected with enthalpy-increasing compressor gas supplementing opening；Vortex tube cold end and steaming
The connection of device air inlet is sent out, evaporator discharge mouth is connected with enthalpy-increasing compressor air inlet；First temperature sensor is used for detecting evaporation
Device air outlet temperature, first pressure sensor are used for detecting vaporizer outlet pressure；Vortex tube includes hot junction electromagnetic valve, hot junction electromagnetism
Valve is arranged on vortex tube hot junction position, for controlled vortex flow pipe coefficient of refrigerating performance；Controller is according to the first temperature sensor and first
Pressure sensor signal, controls hot junction electromagnetism valve opening.
Further, including solenoid valve block and second temperature sensor, second temperature sensor is used for detecting vortex tube heat
End temperature；Solenoid valve block includes first state and the second state；In the first state, solenoid valve block connection vortex tube hot junction and increasing
Enthalpy compressor gas supplementing opening, solenoid valve block cut-out vortex tube hot junction and condenser air inlet；In the second condition, solenoid valve block cut-out
Vortex tube hot junction and enthalpy-increasing compressor gas supplementing opening, solenoid valve block connection vortex tube hot junction and condenser air inlet；Controller according to
Second temperature sensor signal, control solenoid valve block switch under first state and the second state.
Further, when the temperature value that second temperature sensor is detected exceedes preset value, controller controls electromagnetic valve
Group switches to the second state；Otherwise, controller control solenoid valve block switches to first state.
Further, solenoid valve block includes that the first electromagnetic valve and the second electromagnetic valve, the first electromagnetic valve are located at vortex tube hot junction
Between enthalpy-increasing compressor gas supplementing opening in pipeline；Second electromagnetic valve is located at pipeline between vortex tube hot junction and condenser air inlet
In.
Further, including check valve, check valve is arranged between vortex tube hot junction and condenser air inlet in pipeline.
Further, also include that gas-liquid separator, gas-liquid separator are connected to condenser gas outlet and vortex tube air inlet
Between in pipeline, the liquid outlet of gas-liquid separator is connected with evaporator air inlet.
Further, expansion valve is provided with pipeline between the liquid outlet of gas-liquid separator and evaporator air inlet.
The invention provides a kind of increasing enthalpy hot pump in low temp, the high temperature and high pressure gas of condenser gas outlet after vortex tube,
The unequal two parts air-flow of stagnation temperature is separated into after expansion acceleration in vortex tube, wherein the cold airflow of temperature drop is by vortex tube
Cold end is discharged, and the elevated thermal current of temperature is discharged by vortex tube hot junction.Reduce the irreversible loss of heat pump.Controller root
According to the first temperature sensor and first pressure sensor signal, the evaporator outlet degree of superheat is calculated, controls hot junction electromagnetism
Valve opening, so that change cold end flow and hot junction flow rate ratio.Controller can be evaporated according to ambient temperature situation, flexible
Device outlet superheat degree.
In addition, take full advantage of the energy of the high temperature gas flow that isolates simultaneously, enthalpy-increasing compressor gas supplementing opening, increase pressure is entered
Contracting machine inspiratory flow, so as to increased the refrigerant flow of whole system, improving the operating condition of heat pump, reducing compressor work
Consumption, improves the heating capacity of heat pump.When vortex tube hot junction flow is reduced, when temperature is increased to predetermined range value, in order to reduce energy
Vortex tube hot junction flow is introduced to condenser inlet, has saved the energy, improves the efficiency of blood circulation by loss.
Check valve can prevent exhaust outlet of compressor flow from flowing backward to vortex tube hot junction, cause inflow condenser flow to subtract
Few, heating capacity declines.Gas-liquid separator is for preventing liquid refrigerant from causing liquid hit phenomenon to vortex tube.
The invention provides a kind of increasing enthalpy hot pump in low temp, reduces the irreversible loss of heat pump.Improve cyclic system
The efficiency of system and heating capacity.
Description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is increasing enthalpy hot pump in low temp structural representation of the present invention；
Fig. 2 is increasing enthalpy hot pump in low temp control schematic diagram of the present invention.
Specific embodiment
It should be noted that in the case where not conflicting, embodiment and the feature in embodiment in the present invention can phases
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
As depicted in figs. 1 and 2, preferably a kind of increasing enthalpy hot pump in low temp of the present invention, including enthalpy-increasing compressor 1, vortex tube 4, steams
Send out device 5, condenser 2, controller, the first temperature sensor, first pressure sensor；1 air vent of enthalpy-increasing compressor and condenser 2
Air inlet connects, and 2 gas outlet of condenser is connected with 4 air inlet of vortex tube, and 4 hot junction of vortex tube is connected with 1 gas supplementing opening of enthalpy-increasing compressor
Connect；4 cold end of vortex tube is connected with 5 air inlet of vaporizer, and 5 air vent of vaporizer is connected with 1 air inlet of enthalpy-increasing compressor.Vortex tube
4 include hot junction electromagnetic valve 6, and hot junction electromagnetic valve 6 is arranged on 4 hot junction position of vortex tube, for 4 coefficient of refrigerating performance of controlled vortex flow pipe；Whirlpool
4 coefficient of refrigerating performance of flow tube refers to that the air conditioning quantity of 4 cold end of vortex tube release accounts for the percent by volume of input 4 air inlet total amount of vortex tube,
Coefficient of refrigerating performance is higher, and cold airflow is bigger, and cooling extent is less, and the hot gas amount of 4 hot junction of vortex tube release is fewer, 4 hot junction of vortex tube
Increasing extent of temperature is bigger.Otherwise contrary.
As shown in Fig. 2 the first temperature sensor is used for detecting that 5 air outlet temperature of vaporizer, first pressure sensor are used for examining
Survey 5 outlet pressure of vaporizer；Controller is calculated vaporizer according to the first temperature sensor and first pressure sensor signal
The 5 gas outlet degrees of superheat, control 6 aperture of hot junction electromagnetic valve.The degree of superheat refers to refrigerant temperature higher than the saturation temperature under corresponding pressure
The degree of degree.Electromagnetic valve 6 aperture in hot junction is bigger, and coefficient of refrigerating performance is higher, and cold airflow is bigger, and cooling extent is less, 4 hot junction of vortex tube
The hot gas amount of release is fewer, and 4 hot junction increasing extent of temperature of vortex tube is bigger.Otherwise contrary.
If in the winter time, ambient temperature is less than 0 degree, controller is sensed according to the first temperature sensor and first pressure
Device signal, is calculated the 5 gas outlet degree of superheat of vaporizer, and the 5 gas outlet degree of superheat of vaporizer is very low, and controller controls hot junction electromagnetism
6 aperture of valve diminishes, and coefficient of refrigerating performance is relatively low, and cold airflow diminishes, and cooling extent increases so that the 5 gas outlet degree of superheat of vaporizer is raised,
Vaporizer 5 is made to work under saturation loading.The hot gas amount increase of 4 hot junction of vortex tube release, 4 hot junction increasing extent of temperature of vortex tube subtract
Few, the flow in 4 hot junction of vortex tube enters compressor gas supplementing opening, improves the heating capacity of compressor, reduces energy consumption of compressor.
If in summer, 30 degree of ambient temperature, controller is according to the first temperature sensor and first pressure sensor
Signal, is calculated the 5 gas outlet degree of superheat of vaporizer, and the 5 gas outlet degree of superheat of vaporizer is very high, and controller controls hot junction electromagnetic valve
6 apertures become big, and coefficient of refrigerating performance increases, and cold airflow increases, and cooling extent is reduced so that the 5 gas outlet degree of superheat of vaporizer reduces, and makes
Vaporizer 5 works under saturation loading.The hot gas amount of 4 hot junction of vortex tube release is reduced, 4 hot junction increasing extent of temperature increase of vortex tube,
The flow in 4 hot junction of vortex tube enters compressor gas supplementing opening, improves the heating capacity of compressor, reduces energy consumption of compressor.
In order to prevent the high temperature refrigerant in 4 hot junction of vortex tube from entering compressor gas supplementing opening, compressor heat load is caused to increase,
Damage compressor and heat waste.Preferably a kind of increasing enthalpy hot pump in low temp of the present invention also includes solenoid valve block and second temperature sensing
Device, second temperature sensor are used for detecting 4 hot-side temperature of vortex tube；Solenoid valve block includes first state and the second state；Electromagnetism
Valve group includes that the first electromagnetic valve 7 and the second electromagnetic valve 8, the first electromagnetic valve 7 are located at 4 hot junction of vortex tube and 1 QI invigorating of enthalpy-increasing compressor
Between mouthful in pipeline；Second electromagnetic valve 8 is located between 2 air inlet of 4 hot junction of vortex tube and condenser in pipeline.In first state
Under, the first electromagnetic valve 7 must be electrically connected 4 hot junction of vortex tube and 1 gas supplementing opening of enthalpy-increasing compressor, 8 power-off of the second electromagnetic valve cut-out vortex
4 hot junction of pipe and 2 air inlet of condenser；In the second condition, 7 power-off of the first electromagnetic valve cut-out vortex tube, 4 hot junction is compressed with increasing enthalpy
1 gas supplementing opening of machine, the second electromagnetic valve 8 must be electrically connected 4 hot junction of vortex tube and 2 air inlet of condenser；Controller is passed according to second temperature
Sensor signal, control solenoid valve block switch under first state and the second state.
If in summer, 30 degree of ambient temperature, when the 4 hot-side temperature value of vortex tube that second temperature sensor is detected
When exceeding preset value, controller control solenoid valve block switches to the second state, and the high temperature refrigerant in 4 hot junction of vortex tube is directly entered
2 entrance of condenser, improves heating capacity, reduces the energy consumption of compressor；Otherwise, controller control solenoid valve block switches to first
State.
In order to prevent exhaust outlet of compressor flow from flowing backward to 4 hot junction of vortex tube, cause to flow into the minimizing of 2 flow of condenser, system
Heat declines.Check valve 9 is installed in pipeline between 2 air inlet of 4 hot junction of vortex tube and condenser.In order to prevent condenser 2
The liquid refrigerant of outlet causes liquid hit phenomenon to vortex tube 4.Preferably a kind of increasing enthalpy hot pump in low temp of the present invention also includes gas-liquid point
From device 3, gas-liquid separator 3 is connected between 4 air inlet of 2 gas outlet of condenser and vortex tube in pipeline, 3 import of gas-liquid separator
It is connected with 2 gas outlet of condenser, the gas outlet of gas-liquid separator 3 is connected with 4 air inlet of vortex tube, the liquid of gas-liquid separator 3
Body outlet is connected with 5 air inlet of vaporizer.Set in pipeline between 5 air inlet of liquid outlet and vaporizer of gas-liquid separator 3
It is equipped with expansion valve 10.The cold-producing medium of the liquid outlet of gas-liquid separator 3 is directly entered 5 air inlet of vaporizer after expansion valve 10
Mouthful.
The invention provides a kind of increasing enthalpy hot pump in low temp, by controller, hot junction electromagnetic valve 6, the first temperature sensor,
One pressure transducer, flexibly controls the aperture of hot junction electromagnetic valve 6, reaches 4 coefficient of refrigerating performance of controlled vortex flow pipe, and control accuracy is high,
The irreversible loss of heat pump is reduced, improves the operating condition of heat pump, reduce compressor power consumption, improve heating for heat pump
Amount.The energy has been saved, the efficiency of blood circulation has been improve.By second temperature sensor and solenoid valve block, improve the fortune of heat pump
Row operating mode, reduces compressor power consumption, improves the heating capacity of heat pump.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements that is made etc. should be included within the scope of the present invention.
Claims (6)
1. a kind of increasing enthalpy hot pump in low temp, it is characterised in that including enthalpy-increasing compressor (1), vortex tube (4), vaporizer (5), condensation
Device (2), controller, the first temperature sensor, first pressure sensor；Enthalpy-increasing compressor (1) air vent and condenser (2) air inlet
Mouthful connection, condenser (2) gas outlet is connected with vortex tube (4) inlet end, vortex tube (4) hot junction and enthalpy-increasing compressor (1) QI invigorating
Mouth connection；Vortex tube (4) cold end is connected with vaporizer (5) air inlet, vaporizer (5) air vent and enthalpy-increasing compressor (1) air inlet
Mouth connection；First temperature sensor is used for detecting that vaporizer (5) air outlet temperature, first pressure sensor are used for detecting vaporizer
(5) outlet pressure；Vortex tube (4) includes that hot junction electromagnetic valve (6), hot junction electromagnetic valve (6) are arranged on vortex tube (4) hot junction position,
For controlled vortex flow pipe (4) coefficient of refrigerating performance；Controller is according to the first temperature sensor and first pressure sensor signal, control warm
End electromagnetic valve (6) aperture；
Including solenoid valve block and second temperature sensor, second temperature sensor is used for detecting vortex tube (4) hot-side temperature；Electromagnetism
Valve group includes first state and the second state；In the first state, solenoid valve block connection vortex tube (4) hot junction and enthalpy-increasing compressor
(1) gas supplementing opening, solenoid valve block cut-out vortex tube (4) hot junction and condenser (2) air inlet；In the second condition, solenoid valve block is cut
Disconnected vortex tube (4) hot junction and enthalpy-increasing compressor (1) gas supplementing opening, solenoid valve block connection vortex tube (4) hot junction and condenser (2) air inlet
Mouthful；Controller switches under first state and the second state according to second temperature sensor signal, control solenoid valve block.
2. increasing enthalpy hot pump in low temp according to claim 1, it is characterised in that when the temperature value that second temperature sensor is detected
When exceeding preset value, controller control solenoid valve block switches to the second state；Otherwise, controller control solenoid valve block switches to the
One state.
3. increasing enthalpy hot pump in low temp according to claim 1, it is characterised in that solenoid valve block includes the first electromagnetic valve (7) and
Two electromagnetic valves (8), the first electromagnetic valve (7) are located between vortex tube (4) hot junction and enthalpy-increasing compressor (1) gas supplementing opening in pipeline；The
Two electromagnetic valves (8) are located between vortex tube (4) hot junction and condenser (2) air inlet in pipeline.
4. increasing enthalpy hot pump in low temp according to claim 1, it is characterised in that including check valve (9), check valve (9) is arranged on
Between vortex tube (4) hot junction and condenser (2) air inlet in pipeline.
5. increasing enthalpy hot pump in low temp according to Claims 1-4 any one, it is characterised in that also include gas-liquid separator
(3), gas-liquid separator (3) is connected between condenser (2) gas outlet and vortex tube (4) air inlet in pipeline, gas-liquid separator
(3) liquid outlet is connected with vaporizer (5) air inlet.
6. increasing enthalpy hot pump in low temp according to claim 5, it is characterised in that in liquid outlet and the steaming of gas-liquid separator (3)
Send out expansion valve (10) is provided with pipeline between device (5) air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410810194.1A CN104501460B (en) | 2014-12-24 | 2014-12-24 | A kind of increasing enthalpy hot pump in low temp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410810194.1A CN104501460B (en) | 2014-12-24 | 2014-12-24 | A kind of increasing enthalpy hot pump in low temp |
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| Publication Number | Publication Date |
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| CN104501460A CN104501460A (en) | 2015-04-08 |
| CN104501460B true CN104501460B (en) | 2017-03-15 |
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| CN111981648A (en) * | 2020-08-25 | 2020-11-24 | Tcl空调器(中山)有限公司 | Heating control method and device for air conditioner, air conditioner and readable storage medium |
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| CN100538207C (en) * | 2007-09-25 | 2009-09-09 | 西安交通大学 | A kind of high temperature heat pump system that has vortex tube |
| CN101922801B (en) * | 2010-09-27 | 2012-05-23 | 江苏天舒电器有限公司 | Parallel-flow two-stage condensation heat pump water heater |
| CN202048721U (en) * | 2011-04-27 | 2011-11-23 | 浙江大学 | Heating device utilizing low grade heat source |
| CN202133173U (en) * | 2011-06-14 | 2012-02-01 | 浙江大学 | Auto-cascade system with vortex tube |
| CN102338496B (en) * | 2011-09-30 | 2013-08-14 | 浙江大学 | Multi-temperature-zone refrigeration system with vortex tube |
| CN203857705U (en) * | 2014-01-26 | 2014-10-01 | 天津商业大学 | Heat pump system using vto separate hot gas |
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Effective date of registration: 20181107 Address after: 750000 2 Ning Ping Street, Desheng Industrial Park, Yinchuan, the Ningxia Hui Autonomous Region Patentee after: Yinchuan Industrial Science and technology development Limited by Share Ltd Address before: 430074 7-4-510, block seven, Guandong Technology Industrial Park, East Lake Development Zone, Wuhan, Hubei. Patentee before: WUHAN HAOTONG TECHNOLOGY CO., LTD. |
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