CN103245155A - Control method of bi-level enthalpy-adding heat pump system - Google Patents
Control method of bi-level enthalpy-adding heat pump system Download PDFInfo
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- CN103245155A CN103245155A CN2012100331626A CN201210033162A CN103245155A CN 103245155 A CN103245155 A CN 103245155A CN 2012100331626 A CN2012100331626 A CN 2012100331626A CN 201210033162 A CN201210033162 A CN 201210033162A CN 103245155 A CN103245155 A CN 103245155A
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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
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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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
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same 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
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2509—Economiser valves
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method of a bi-level enthalpy-adding heat pump system. The control method includes the following steps: detecting environment parameters and/or system parameters of the bi-level enthalpy-adding heat pump system; and controlling the bi-level enthalpy-adding heat pump system to close an enthalpy-adding pipeline when the detected environment parameters and/or system parameters satisfy preset conditions. According to the control method of the bi-level enthalpy-adding heat pump system, the enthalpy-adding pipeline of a regulating system is fed back through comparison of the detected system parameters or environment parameters and the preset conditions; and when the preset conditions of energy efficiency inflection points are satisfied, the heat pump system closes the enthalpy-adding pipeline to enable the heat pump system to work in a high energy efficiency ratio state, so that cooling or heating capacity can be increased and energy consumption can be reduced.
Description
Technical field
The present invention relates to compressor field, in particular to a kind of twin-stage enthalpy increasing heat pump system control method.
Background technology
The heat pump product promotes under the promotion in national efficiency at present; energy-efficient performance is better than in the past; the appearance of converter technique; to starting back fast cooling, intensification; the steady control of environment temperature has all had tangible progress than constant speed hot pump; and technology can be avoided shutting down frequently and starting, and energy-conservation and reliability compressor are had good advantage.Though frequency conversion heat pump has had progress clearly than constant speed hot pump on energy-conservation and comfortableness,, under some abominable extreme weather conditions, some shortcomings are arranged still.For example: high temperature refrigerating capacity, ultralow temperature heating capacity etc. can't satisfy the demands of consumers fully.
Twin-stage increases the enthalpy system and increases enthalpy by tonifying Qi and can overcome above shortcoming, still, increases the enthalpy operation if system opens at any time, and then performance can reduce on the contrary under some condition.
Summary of the invention
The present invention aims to provide a kind of twin-stage enthalpy increasing heat pump system control method that improves Energy Efficiency Ratio.
The invention provides a kind of twin-stage enthalpy increasing heat pump system control method, may further comprise the steps: the ambient parameter and/or the systematic parameter that detect twin-stage enthalpy increasing heat pump system; When detected ambient parameter and/or systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline.
Further, the ambient parameter of twin-stage enthalpy increasing heat pump system comprises environment temperature; When detected ambient parameter and/or systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline and comprises: when twin-stage enthalpy increasing heat pump system running refrigerating circulation time, when detected environment temperature was less than or equal to refrigeration preset temperature T1, control twin-stage enthalpy increasing heat pump system closing increased the enthalpy pipeline; When twin-stage enthalpy increasing heat pump system operation heats circulation time, detected environment temperature is when heating preset temperature T2, and control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline.
Further, the scope of refrigeration preset temperature T1 is 16 ℃≤T1≤30 ℃; The scope that heats preset temperature T2 is 0 ℃≤T2≤20 ℃.
Further, the refrigeration preset temperature is T1=25 ℃; Heat preset temperature T2=10 ℃.
Further, the systematic parameter of twin-stage enthalpy increasing heat pump system comprises that twin-stage increases the running frequency of enthalpy compressor; When detected ambient parameter and/or systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline and comprises: when the operation of twin-stage enthalpy increasing heat pump system heats circulation or kind of refrigeration cycle, when detected running frequency was less than or equal to predeterminated frequency, control twin-stage enthalpy increasing heat pump system closing increased the enthalpy pipeline.
Further, the scope of predeterminated frequency F is 10HZ≤F≤50HZ.
Further, predeterminated frequency F=35HZ.
Further, the systematic parameter of twin-stage enthalpy increasing heat pump system comprises pressure at expulsion and pressure of inspiration(Pi); When detected ambient parameter and/or systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline and comprises: when the ratio of pressure at expulsion and pressure of inspiration(Pi) was less than or equal to the predetermined system pressure ratio, control twin-stage enthalpy increasing heat pump system closing increased the enthalpy pipeline.
Further, the scope of predetermined system pressure ratio N is 1.5≤N≤3.0.
Further, predetermined system pressure ratio N=2.2.
Further, the systematic parameter of twin-stage enthalpy increasing heat pump system comprises evaporating temperature and the condensation temperature of off-premises station; When detected ambient parameter and/or systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline and comprises: when twin-stage enthalpy increasing heat pump system running refrigerating circulation time, detected condensation temperature is smaller or equal to 40 ℃, perhaps detected evaporating temperature is more than or equal to 10 ℃, and control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline; When twin-stage enthalpy increasing heat pump system operation heats circulation time, detected evaporating temperature is during more than or equal to 0 ℃, and control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline.
According to twin-stage enthalpy increasing heat pump system control method of the present invention, by sensed system parameter or ambient parameter and pre-conditioned contrast, looped system increases the enthalpy pipeline, when satisfying preset pre-conditioned, heat pump is closed and is increased the enthalpy pipeline, heat pump is operated under the state of higher Energy Efficiency Ratio, thereby increases heating capacity, reduce energy consumption.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the heat pump type air conditioning system kind of refrigeration cycle schematic diagram according to twin-stage enthalpy increasing heat pump of the present invention system;
Fig. 2 is that heat pump type air conditioning system or the heat pump water heater system according to twin-stage enthalpy increasing heat pump of the present invention system heats the circulation schematic diagram;
Fig. 3 is for opening and closing COP (Energy Efficiency Ratio) schematic diagram under different frequency according to twin-stage enthalpy increasing heat pump according to the present invention system increasing the enthalpy pipe; And
Fig. 4 is for opening and closing COP schematic diagram under different pressures of inspiration(Pi) and exhaust pressure ratio according to twin-stage enthalpy increasing heat pump according to the present invention system increasing the enthalpy pipe.
The specific embodiment
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
According to twin-stage enthalpy increasing heat pump system control method of the present invention, may further comprise the steps: the ambient parameter and/or the systematic parameter that detect twin-stage enthalpy increasing heat pump system; When detected ambient parameter and/or systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline.The present invention is according to the actual operating efficiency characteristics of twin-stage enthalpy increasing heat pump system, and by systematic parameter and the ambient parameter of real work, looped system increases the enthalpy pipeline.The enthalpy pipeline that increases that increases the enthalpy system by the control twin-stage is closed at efficiency flex point place, thereby keeps heat pump with higher Energy Efficiency Ratio operation.
The ambient parameter of twin-stage enthalpy increasing heat pump system mainly comprises ambient temperature, and when twin-stage enthalpy increasing heat pump system running refrigerating circulation time, when detected environment temperature was less than or equal to refrigeration preset temperature T1, control twin-stage enthalpy increasing heat pump system closing increased the enthalpy pipeline; When twin-stage enthalpy increasing heat pump system operation heats circulation time, detected environment temperature is when heating preset temperature T2, and control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline.
According to the different situations of actual loading, during the heat pump kind of refrigeration cycle, refrigeration preset temperature T1 scope is 16～30 ℃, when environment temperature 16～30 ℃ of scopes, according to the actual loading situation of system, close increasing the enthalpy pipeline, the assurance system is in the higher range section operation of efficiency; Adjusting system heats circulation time, and heating preset temperature T2 scope is 0～20 ℃, when environment temperature 0～20 ℃ of scope, according to the actual loading situation of system, close increasing the enthalpy pipeline, the assurance system is in the operation of the high range section of efficiency.
The systematic parameter of twin-stage enthalpy increasing heat pump system comprises that twin-stage increases the running frequency of enthalpy compressor, when the operation of twin-stage enthalpy increasing heat pump system heats circulation or kind of refrigeration cycle, when detected running frequency was less than or equal to predeterminated frequency F, control twin-stage enthalpy increasing heat pump system closing increased the enthalpy pipeline.
As shown in Figure 3, curve S 1 expression system opens and to increase the Energy Efficiency Ratio of enthalpy under different frequency, and curve S 2 expression system closings increase the Energy Efficiency Ratio of enthalpy under different frequency, and as can be seen from the figure, S1 and S2 are crossing during for F in frequency, and namely frequency F is break frequency.As can be seen from the figure, when system's running frequency was lower than break frequency, the efficiency that system closing increases enthalpy was higher than the efficiency that unlatching increases enthalpy.
Table 1: system opens under different frequency and increases enthalpy and close the Energy Efficiency Ratio that increases enthalpy
From the data of table 1 as can be seen, in middle refrigeration capacity test, opening the frequency that increases enthalpy is 30Hz, and Energy Efficiency Ratio (COP) is 3.175, and calculating SEER (seasonal energy efficiency ratio (seer)) is 3.215; And close when increasing the enthalpy operation, frequency 31Hz, COP are 3.497, calculating SEER is 3.39.Namely system closes the Energy Efficiency Ratio increase enthalpy and will be higher than to open and increase the enthalpy operation under low frequency.
Different situations according to actual loading, the scope of the predeterminated frequency F of twin-stage enthalpy increasing heat pump system is 10～50Hz, when heat pump running frequency scope is 10～50Hz, according to the actual loading situation of system, can close increasing the enthalpy pipeline, the assurance system is in the high range section operation of efficiency.Usually, the refrigerating environment temperature is higher than 30 ℃, and running frequency is higher than 50Hz, perhaps, heats environment temperature and is lower than 0 ℃, and running frequency is higher than 50Hz, and system all needs to open and increases enthalpy operation.
The systematic parameter of twin-stage enthalpy increasing heat pump system comprises pressure at expulsion and pressure of inspiration(Pi); When the ratio of pressure at expulsion and pressure of inspiration(Pi) was less than or equal to the predetermined system pressure ratio, control twin-stage enthalpy increasing heat pump system closing increased the enthalpy pipeline.As shown in Figure 4, curve S 3 expression systems open and increase the Energy Efficiency Ratio of enthalpy under different system pressure ratio (ratio of pressure at expulsion and pressure of inspiration(Pi)), curve S 4 expression system closings increase the Energy Efficiency Ratio of enthalpy under the different system pressure ratio, as can be seen from the figure, S3 and S4 intersect during for N in system's pressure ratio, and namely system's pressure ratio is that N is default.As can be seen from the figure, when system's pressure ratio of system's operation was lower than flex point N, the efficiency that system closing increases enthalpy was higher than the efficiency that unlatching increases enthalpy.According to actual loading and environment, the scope of predetermined system pressure ratio N is 2.0≤N≤3.0.When the ratio of the pressure at expulsion of system and pressure of inspiration(Pi) was less than or equal to N, system closing increased the enthalpy pipeline.When the ratio of pressure at expulsion and pressure of inspiration(Pi) during greater than N, system increases the enthalpy pipeline and opens.Open when operation when system increases the enthalpy pipeline, the pressure in system's flash vessel is Pm, comes the aperture of feedback regulation condensator outlet choke valve by the value of monitoring Pm, and Pm control is existed
(wherein, Pd is pressure at expulsion, and Ps is pressure of inspiration(Pi)).
The present invention increases the actual operating efficiency characteristics of enthalpy system according to twin-stage, and by the loading condiction of real work, looped system increases the enthalpy pipeline.Increase opening or closing of enthalpy pipeline by what the control twin-stage increased the enthalpy system, the system of assurance is under the higher Energy Efficiency Ratio and moves.Introduce the present invention below in conjunction with specific embodiments of the invention:
Embodiment 1: twin-stage enthalpy increasing heat pump system as depicted in figs. 1 and 2 comprises: twin-stage increases enthalpy compressor 1, and by pipeline and cross valve 2 and compressor 1 interconnective outdoor heat exchanger 3 and indoor heat exchanger 4.Heat pump also comprises flash vessel 5, and flash vessel 5 and outdoor heat exchanger 3 and indoor heat exchanger 4 are communicated with by pipeline, and pipeline is provided with the flow that choke valve 7a, 7b control enters the refrigerant of flash vessel 5, thus control flash vessel 5 pressure inside.Flash vessel 5 is connected by increasing the enthalpy pipeline with compressor, increases the enthalpy pipeline and is provided with the switch that magnetic valve 6 controls increase the enthalpy pipeline.
Be provided with the sensor of detection system running frequency and the temperature sensor of testing environment temperature in the heat pump, the frequency values and the residing ambient temperature value control of off-premises station that move by system increase opening or closing of enthalpy line segments.As shown in Figure 1, under the refrigeration condition, the default environment temperature of heat pump is 25 ℃, and when environment temperature during smaller or equal to 25 ℃, magnetic valve 6 cuts out and increases the enthalpy pipeline; The default predeterminated frequency of heat pump is 35HZ, and when the running frequency of system during smaller or equal to 35Hz, magnetic valve 6 cuts out and increases the enthalpy pipeline.Have only when environment temperature is higher than 25 ℃ and running frequency greater than 35Hz, magnetic valve is just opened and is increased the enthalpy pipeline.As shown in Figure 2, heat under the condition, the default environment temperature of heat pump is 10 ℃, and when environment temperature during more than or equal to 10 ℃, magnetic valve 6 cuts out and increases the enthalpy pipeline.The default predeterminated frequency of heat pump is 35HZ, and when the running frequency of system during smaller or equal to 35Hz, magnetic valve 6 cuts out and increases the enthalpy pipeline.Have only when environment temperature less than 10 ℃ and running frequency during greater than 35Hz, magnetic valve is just opened and is increased the enthalpy pipeline.
Embodiment 2: in twin-stage enthalpy increasing heat pump system, increase opening or closing of enthalpy line segments by the frequency values of system's operation and evaporating temperature, the control of condensation temperature value of off-premises station.Under the refrigeration condition, the default condensation temperature of heat pump is 40 ℃, and evaporating temperature is 10 ℃, and when condensation temperature is lower than 40 ℃, perhaps evaporating temperature is higher than 10 ℃, and magnetic valve 6 cuts out and increases the enthalpy pipeline.The default predeterminated frequency of heat pump is 35HZ, when the running frequency of system during smaller or equal to 35Hz, magnetic valve 6 cuts out and increases the enthalpy pipeline, only is higher than 40 ℃ and evaporating temperature is lower than 10 ℃ when condensation temperature, and when running frequency was higher than 35Hz, magnetic valve was opened and is increased the enthalpy pipeline; Heat under the condition, when evaporating temperature was higher than 0 ℃, magnetic valve 6 cut out and increases the enthalpy pipeline, when running frequency during smaller or equal to 35Hz, the magnetic valve outage, system closing increases the enthalpy pipeline, only works as evaporating temperature and is lower than 0 ℃, and when running frequency is higher than 35Hz, the magnetic valve energising, system increases the enthalpy pipeline and opens.
Table 2: unlatching increases enthalpy and closes the Energy Efficiency Ratio that increases enthalpy under the corresponding condensation of system and the evaporating temperature
| Compressor | Condensation temperature | Evaporating temperature | Frequency | Ability | Power | COP | Remarks |
| QXAT-A075 | 38 | 13 | 31 | 1347 | 422.3 | 3.189 | Open and increase enthalpy |
| 38 | 13 | 31 | 1290.2 | 369 | 3.497 | The pass increases enthalpy |
As can be seen from Table 2, be 38 ℃ in condensation temperature, evaporating temperature is 13 ℃, under the condition of frequency 31Hz, opening the COP that increases enthalpy is 3.189, closes the COP that increases enthalpy and then reaches 3.497, improves about 0.31.Namely system closes the efficient increase the enthalpy operation and increases the enthalpy operation far above opening in the above conditions.
Embodiment 3: in twin-stage enthalpy increasing heat pump system, the default predeterminated frequency of heat pump is 35HZ, and when the running frequency of system during smaller or equal to 35Hz, magnetic valve 6 cuts out and increases the enthalpy pipeline, make heat pump operate in Energy Efficiency Ratio higher do not increase the enthalpy state; When the ratio of the pressure at expulsion Pd of system and pressure of inspiration(Pi) Ps smaller or equal to 2.2 the time, magnetic valve 6 cuts out and increases the enthalpy pipeline, this moment, systematic energy efficiency ratio was higher than the Energy Efficiency Ratio of opening when increasing the enthalpy pipeline.The ratio that is higher than 35Hz and pressure at expulsion Pd and pressure of inspiration(Pi) Ps when running frequency is greater than 2.2 the time, and magnetic valve is opened and increased the enthalpy pipeline.
Table 3: system opens under the low-pressure ratio and increases enthalpy and close the Energy Efficiency Ratio that increases enthalpy
| Compressor | Pressure at expulsion | Pressure of inspiration(Pi) | Pressure ratio | Frequency | Ability | Power | COP | Remarks |
| QXAT-A075 | 2.284 | 1.18 | 1.94 | 31 | 1347 | 422.3 | 3.189 | Open and increase enthalpy |
| 2.284 | 1.18 | 1.94 | 31 | 1290.2 | 369 | 3.497 | The pass increases enthalpy |
As can be seen from Table 3, be 2.284MPa in pressure at expulsion, suction temperature is 1.18MPa, and pressure ratio is 1.94, and under the condition of frequency 31Hz, opening the COP that increases enthalpy is 3.189, closes the COP that increases enthalpy and then reaches 3.497, improves about 0.31.Namely system closes the efficient increase the enthalpy operation and increases the enthalpy operation far above opening in the above conditions.
Open when operation when system increases the enthalpy pipeline, the pressure in system's flash vessel is intermediate pressure Pm, comes the aperture of feedback regulation condensator outlet choke valve 7a, 7b by the value of monitoring Pm, and Pm control is existed
If system closing increases the operation of enthalpy magnetic valve, then do not carry out the adjusting of intermediate pressure.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
According to twin-stage enthalpy increasing heat pump system control method of the present invention, when systematic parameter or ambient parameter satisfy when pre-conditioned, twin-stage enthalpy increasing heat pump system increases enthalpy always the efficiency variation can occur, be that heat pump increases the Energy Efficiency Ratio of enthalpy less than the Energy Efficiency Ratio that does not increase enthalpy, the present invention is by sensed system parameter or ambient parameter and pre-conditioned contrast, looped system increases the enthalpy pipeline, when satisfying preset pre-conditioned, heat pump is closed and is increased the enthalpy pipeline, heat pump is operated under the state of higher Energy Efficiency Ratio, heat or refrigerating capacity thereby increase, reduce energy consumption.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a twin-stage enthalpy increasing heat pump system control method is characterized in that, said method comprising the steps of:
Detect ambient parameter and/or the systematic parameter of twin-stage enthalpy increasing heat pump system;
When detected described ambient parameter and/or described systematic parameter satisfy when pre-conditioned, control described twin-stage enthalpy increasing heat pump system closing and increase the enthalpy pipeline.
2. twin-stage enthalpy increasing heat pump system control method according to claim 1 is characterized in that,
The ambient parameter of described twin-stage enthalpy increasing heat pump system comprises environment temperature;
When detected described ambient parameter and/or described systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline and comprises:
When described twin-stage enthalpy increasing heat pump system running refrigerating circulation time, when detected described environment temperature is less than or equal to refrigeration preset temperature T1, controls described twin-stage enthalpy increasing heat pump system closing and increase the enthalpy pipeline;
Operation heats circulation time when described twin-stage enthalpy increasing heat pump system, and detected described environment temperature is controlled described twin-stage enthalpy increasing heat pump system closing and increased the enthalpy pipeline when heating preset temperature T2.
3. twin-stage enthalpy increasing heat pump system control method according to claim 2 is characterized in that,
The scope of described refrigeration preset temperature T1 is 16 ℃≤T1≤30 ℃;
The described scope that heats preset temperature T2 is 0 ℃≤T2≤20 ℃.
4. twin-stage enthalpy increasing heat pump system control method according to claim 3 is characterized in that,
T1=25 ℃ of described refrigeration preset temperature;
Describedly heat preset temperature T2=10 ℃.
5. twin-stage enthalpy increasing heat pump system control method according to claim 1 is characterized in that,
The systematic parameter of described twin-stage enthalpy increasing heat pump system comprises that twin-stage increases the running frequency of enthalpy compressor;
When detected described ambient parameter and/or described systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline and comprises:
When the operation of described twin-stage enthalpy increasing heat pump system heats circulation or kind of refrigeration cycle, when detected described running frequency is less than or equal to predeterminated frequency F, controls described twin-stage enthalpy increasing heat pump system closing and increase the enthalpy pipeline.
6. twin-stage enthalpy increasing heat pump system control method according to claim 5 is characterized in that,
The scope of described predeterminated frequency F is 10HZ≤F≤50HZ.
7. twin-stage enthalpy increasing heat pump system control method according to claim 6 is characterized in that,
Described predeterminated frequency F=35HZ.
8. twin-stage enthalpy increasing heat pump system control method according to claim 1 is characterized in that,
The systematic parameter of described twin-stage enthalpy increasing heat pump system comprises pressure at expulsion and pressure of inspiration(Pi);
When detected described ambient parameter and/or described systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline and comprises:
When the ratio of described pressure at expulsion and described pressure of inspiration(Pi) is less than or equal to the predetermined system pressure ratio, controls described twin-stage enthalpy increasing heat pump system closing and increase the enthalpy pipeline.
9. twin-stage enthalpy increasing heat pump system control method according to claim 8 is characterized in that,
The scope of described predetermined system pressure ratio N is 1.5≤N≤3.0.
10. twin-stage enthalpy increasing heat pump system control method according to claim 9 is characterized in that,
Described predetermined system pressure ratio N=2.2.
11. twin-stage enthalpy increasing heat pump system control method according to claim 1 is characterized in that,
The systematic parameter of described twin-stage enthalpy increasing heat pump system comprises evaporating temperature and the condensation temperature of off-premises station;
When detected described ambient parameter and/or described systematic parameter satisfy when pre-conditioned, control twin-stage enthalpy increasing heat pump system closing increases the enthalpy pipeline and comprises:
When described twin-stage enthalpy increasing heat pump system running refrigerating circulation time, detected described condensation temperature is smaller or equal to 40 ℃, and perhaps detected described evaporating temperature is controlled described twin-stage enthalpy increasing heat pump system closing and increased the enthalpy pipeline more than or equal to 10 ℃;
Operation heats circulation time when described twin-stage enthalpy increasing heat pump system, and detected described evaporating temperature is controlled described twin-stage enthalpy increasing heat pump system closing and increased the enthalpy pipeline during more than or equal to 0 ℃.
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| PCT/CN2012/086191 WO2013120375A1 (en) | 2012-02-14 | 2012-12-07 | Method of controlling a heat pump system with two-stage enthalpy increase |
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| CN104596166A (en) * | 2013-10-31 | 2015-05-06 | 海尔集团公司 | Air conditioner and air supplying and enthalpy adding method thereof |
| CN104634027A (en) * | 2013-11-08 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method of enthalpy-increasing air conditioning system |
| CN107036352A (en) * | 2017-05-05 | 2017-08-11 | 重庆美的通用制冷设备有限公司 | Economizer gas supply control method and apparatus |
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| CN104197474B (en) * | 2014-09-23 | 2017-02-22 | 珠海格力电器股份有限公司 | Vapor-supplementing enthalpy-increasing control method, device and system and air conditioning system |
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| CN109916090A (en) * | 2018-11-29 | 2019-06-21 | 青岛经济技术开发区海尔热水器有限公司 | Heat pump water heater control method and heat pump water heater |
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| CN109827232A (en) * | 2019-01-22 | 2019-05-31 | 福建工程学院 | A kind of heat source conversion method of earth surface water source and air source composite heat pump hot-water heating system |
| CN110207418A (en) * | 2019-06-25 | 2019-09-06 | 珠海格力电器股份有限公司 | Heat pump system with double evaporation temperatures and control method |
| CN110849035A (en) * | 2019-11-18 | 2020-02-28 | 珠海格力电器股份有限公司 | Heat pump system, air conditioner and control method of heat pump system |
| CN110849035B (en) * | 2019-11-18 | 2024-05-31 | 珠海格力电器股份有限公司 | Heat pump system, air conditioner and control method of heat pump system |
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