CN104132415B - Solar heat pump and earth source heat pump combined air conditioning system and control method - Google Patents
Solar heat pump and earth source heat pump combined air conditioning system and control method Download PDFInfo
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- CN104132415B CN104132415B CN201410407306.9A CN201410407306A CN104132415B CN 104132415 B CN104132415 B CN 104132415B CN 201410407306 A CN201410407306 A CN 201410407306A CN 104132415 B CN104132415 B CN 104132415B
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
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Abstract
The invention discloses a kind of solar heat pump and earth source heat pump combined air conditioning system and control method, including solar energy heating unit, heat pump main computer unit, ground heat exchanger unit, indoor end unit and control unit, the solar energy heating unit, ground heat exchanger unit, indoor end unit are connected with heat pump main computer unit respectively, and described control unit is connected with heat pump main computer unit, ground heat exchanger unit and indoor end unit respectively.Through the above way, the present invention can realize heat supply in winter, cooling in summer, open solar heat pump heating mode, underground energy storage is carried out to waste heat when solar irradiation intensity is enough sunny daytime in winter；Winter is overcast and rainy and night opens Heating by Ground Source Heat Pump pattern, summer opens earth source heat pump refrigeration mode, and spring, autumn transition season open energy storage pattern, and air-conditioning system remains Effec-tive Function and continuous heating or refrigeration, save energy, keeps underground temperature field balance to greatest extent.
Description
Technical field
The present invention relates to air-conditioning system technical field, more particularly to a kind of solar heat pump and earth source heat pump combine air-conditioning
System and control method.
Background technology
A large amount of uses of the fossil fuels such as coal, oil, natural gas and exhaustive exploitation, cause serious environmental pollution and
Energy scarcity, environmental pollution and energy scarcity problem have turned into the cardinal task for threatening human survival, the exploitation to clean energy resource
Using being just particularly important.
Solar energy due to by weather influenceed greatly, poor continuity, cannot be indoor heating at overcast and rainy and night, thus limitation
Use of the solar energy in heating.
Single geothermal heat pump air-conditioning system is in northern area（Winter thermic load>Summer refrigeration duty）Due to cooling and heating load
Inequality, the heat extracted from underground is more than the heat discharged to underground, causes heat suddenly unbalanced, under constant temperature
Drop, rear effect will worse and worse for many years for system operation, last even cisco unity malfunction.
There is many defects in two kinds of above-mentioned triangular webs, it is therefore necessary to provide a kind of solar energy and earth source heat pump knot
The air-conditioning system of conjunction, learns from other's strong points to offset one's weaknesses, and rationally supply, can avoid excessively being taken for a long time from underground by using solar source
Heat, makes soil heat source have enough recovery cycles, keeps the balance of underground temperature field, and the utilization of earth source heat pump can overcome solar energy
Heat pump receives the defect of environmental influence, the daily stable operation of safeguards system, and improves system synthesis energy utilization rate.
The content of the invention
The present invention solves the technical problem of provide a kind of solar heat pump and earth source heat pump combined air conditioning system and
Control method, can realize heat supply in winter, cooling in summer, and efficiently, energy-conservation and environmental protection, winter, solar energy was opened in sunny heating on daytime
Heat pump heating pattern, underground energy storage is carried out when solar irradiation intensity is enough to unnecessary heat；Winter is overcast and rainy
Heating by Ground Source Heat Pump pattern is opened with night, summer opens earth source heat pump refrigeration mode, and spring, autumn transition season open energy storage mould
Formula, air-conditioning system remains Effec-tive Function, to greatest extent save energy, and ensures system continuous heating or refrigeration, keeps
Underground temperature field is balanced.
In order to solve the above technical problems, one aspect of the present invention is：A kind of solar heat pump and ground are provided
The heat pump united air-conditioning system in source, including：Solar energy heating unit, heat pump main computer unit, ground heat exchanger unit, indoor end list
Unit and control unit, the solar energy heating unit, ground heat exchanger unit, indoor end unit respectively with heat pump main computer unit
Connection, described control unit is connected with heat pump main computer unit, ground heat exchanger unit and indoor end unit,
Wherein heat pump main computer unit, including：First T-way change-over solenoid valve, the second T-way change-over solenoid valve, the 3rd electromagnetism
Three-way diverter valve, the 4th T-way change-over solenoid valve, compressor, four-way reversing valve, electric expansion valve, the first plate type heat exchanger and
Double-plate heat exchanger, I interface end of first T-way change-over solenoid valve goes out with evaporating heat exchanger in solar energy heating unit
Mouth end connection, II interface end of the first T-way change-over solenoid valve is connected with I interface end of four-way reversing valve, four-way reversing valve
IIth, III, IV interface end suction end respectively with compressor, I interface end of the second T-way change-over solenoid valve and the row of compressor
Gas end connects, and II interface end of the second T-way change-over solenoid valve is connected with the fluorine pipe of the first plate type heat exchanger, the second electromagnetic three-way
III interface end of reversal valve is connected with the fluorine pipe of the second plate type heat exchanger, the fluorine pipe other end of the first plate type heat exchanger and the 4th electricity
The II interface end connection of magnetic three-way diverter valve, the fluorine pipe other end of the second plate type heat exchanger and the III of the 4th T-way change-over solenoid valve
Interface end is connected, and I interface end of the 4th T-way change-over solenoid valve is connected with electric expansion valve, the other end of electric expansion valve and the
II interface end of three T-way change-over solenoid valves, I interface end of the 3rd T-way change-over solenoid valve connects with the arrival end of evaporating heat exchanger
Connect, III interface end of the first T-way change-over solenoid valve, III interface end of the 3rd T-way change-over solenoid valve is board-like with second respectively changes
The fluorine pipe two ends connection of hot device.
In a preferred embodiment of the present invention, the solar energy heating unit includes：Heat absorbing fins, transparent cover plate, guarantor
Warm frame and insulation backboard, multiple evaporating heat exchangers are set in turn between multiple heat absorbing fins, and multiple heat absorbing fins are connected into
Overall, heat absorbing fins top is provided with transparent cover plate, and side is provided with insulation frame, and bottom is provided with insulation backboard.
In a preferred embodiment of the present invention, the ground heat exchanger unit includes：Underground buried tube and the second water pump, ground
The outlet of lower pipe laying is connected with the second water pump, and the other end of the second water pump is connected with water pipe one end of the second plate type heat exchanger, the
The water pipe other end of double-plate heat exchanger is connected with the arrival end of underground buried tube.
In a preferred embodiment of the present invention, the indoor end unit includes：Room conditioning end and the first water pump,
The outlet of room conditioning end is connected with the first water pump, and water pipe one end of the other end of the first water pump and the first plate type heat exchanger connects
Connect, the water pipe other end of the first plate type heat exchanger is connected with the entrance of room conditioning end.
In a preferred embodiment of the present invention, described control unit includes：Controller, the first temperature signal probe and the
Two temperature signals are popped one's head in, and the first temperature signal probe is arranged in solar energy heating evaporator, and second temperature signal probe is set
At the pipe outlet of the first plate type heat exchanger, controller by wire respectively with the first T-way change-over solenoid valve, the second electromagnetism
Three-way diverter valve, the 3rd T-way change-over solenoid valve, the 4th T-way change-over solenoid valve, four-way reversing valve, the first water pump, the second water pump
Connected with compressor.
In order to solve the above technical problems, another technical solution used in the present invention is：There is provided a kind of solar heat pump and
The control method of earth source heat pump combined air conditioning system, including following control model：Heating mode, refrigeration mode and energy storage pattern：
First, heating mode：Controller divides according to the first temperature signal probe and the temperature signal of second temperature signal probe
It is three kinds of different heating operation patterns：
Wherein set TbIt is the plate core temperature of solar energy heating evaporator, Tbg、TbdThe respectively plate of solar energy heating evaporator
The default high temperature of core and low temperature, TNIt is air-conditioning supply water temperature, TNg 、TNdRespectively air-conditioning supplies water default high temperature and low temperature：
A, solar heat pump heating operation pattern：Work as Tbd﹤ Tb﹤ TbgAnd TNd﹤ TN﹤ TNgWhen, open the commutation of the first electromagnetic three-way
Valve（Ⅰ→Ⅱ）, the second T-way change-over solenoid valve（Ⅰ→Ⅱ）, the 3rd T-way change-over solenoid valve（Ⅱ→Ⅰ）, the 4th electromagnetic three-way changes
To valve（Ⅱ→Ⅰ）, the first water pump, close the second water pump；
B, solar heat pump heating+storage energy operation pattern：When（Tb﹥ TbdAnd TN﹥ TNg）Or（Tb﹥ TbgAnd TN﹥ TNd）When, open
Open the first T-way change-over solenoid valve（Ⅰ→Ⅱ）, the second T-way change-over solenoid valve（Ⅰ→Ⅱ、Ⅲ）, the 3rd T-way change-over solenoid valve
（Ⅱ→Ⅰ）, the 4th T-way change-over solenoid valve（Ⅱ、Ⅲ→Ⅰ）, the first water pump and the second water pump；
C, Heating by Ground Source Heat Pump operational mode：Work as Tb﹤ TbdOr TN﹤ TNdWhen, open the first T-way change-over solenoid valve（Ⅲ→
Ⅱ）, the second T-way change-over solenoid valve（Ⅰ→Ⅱ）, the 3rd T-way change-over solenoid valve（Ⅱ→Ⅲ）, the 4th T-way change-over solenoid valve
（Ⅱ→Ⅰ）, the first water pump and the second water pump；
2nd, refrigeration mode：
Under cooling operation mode：Open the first T-way change-over solenoid valve（Ⅱ→Ⅲ）, the second T-way change-over solenoid valve（Ⅱ
→Ⅰ）, the 3rd T-way change-over solenoid valve（Ⅲ→Ⅱ）, the 4th T-way change-over solenoid valve（Ⅰ→Ⅱ）, the first water pump and the second water pump,
Four-way reversing valve changes direction；
3rd, energy storage pattern：
Under storage energy operation pattern：Work as Tb﹥ TbgWhen, open the first T-way change-over solenoid valve（Ⅰ→Ⅱ）, the second electromagnetic three-way
Reversal valve（Ⅰ→Ⅲ）, the 3rd T-way change-over solenoid valve（Ⅱ→Ⅰ）, the 4th T-way change-over solenoid valve（Ⅲ→Ⅰ）, the second water pump, four
Logical reversal valve direction is identical with heating mode；Work as Tb≤TbgWhen, all shut down.
The beneficial effects of the invention are as follows：Solar heat pump of the present invention and earth source heat pump combined air conditioning system and control method energy
Heat supply in winter, cooling in summer are enough realized, efficiently, energy-conservation and environmental protection, winter, solar heat pump heating mould was opened in sunny heating on daytime
Formula, underground energy storage is carried out when solar irradiation intensity is enough to unnecessary heat；Winter is overcast and rainy and night opens
Heating by Ground Source Heat Pump pattern, summer opens earth source heat pump refrigeration mode, and spring, autumn transition season open energy storage pattern, air-conditioning system
Effec-tive Function is remained, to greatest extent save energy, and ensure system continuous heating or refrigeration, keep underground temperature field to put down
Weighing apparatus.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, wherein：
Fig. 1 is the structural representation of solar heat pump of the invention and the preferred embodiment of earth source heat pump combined air conditioning system one
Figure；
Fig. 2 is the A-A of solar energy heating evaporator in Fig. 1 to structural representation；
The mark of each part is as follows in accompanying drawing：1st, solar energy heating evaporator, 111, evaporating heat exchanger, 112, heat absorption fins
Piece, 113, transparent cover plate, 114, insulation frame, 115, insulation backboard, the 2, first T-way change-over solenoid valve, the 3, second electromagnetic three-way
Reversal valve, the 4, the 3rd T-way change-over solenoid valve, the 5, the 4th T-way change-over solenoid valve, 6, compressor, 7, four-way reversing valve, 8, electronics
Expansion valve, the 9, second plate type heat exchanger, the 10, second water pump, 11, underground buried tube, 12, controller, the 121, first temperature signal is visited
Head, 122, second temperature signal probe, the 13, first plate type heat exchanger, the 14, first water pump, 15, room conditioning end, 16, room
Between.
Specific embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
All other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
Fig. 1 to Fig. 2 is referred to, the embodiment of the present invention includes：
A kind of solar heat pump and earth source heat pump combined air conditioning system, including：
Solar energy heating unit, including：Evaporating heat exchanger 111, heat absorbing fins 112, transparent cover plate 113, insulation frame 114
With insulation backboard 115, multiple evaporating heat exchangers 111 are set in turn between multiple heat absorbing fins 112, multiple heat absorbing fins 112
Connection is integral, and the top of heat absorbing fins 112 is provided with transparent cover plate 113, and side is provided with insulation frame 114, and bottom is provided with the insulation back of the body
Plate 115.
Heat pump main computer unit, including：First T-way change-over solenoid valve 2, the second T-way change-over solenoid valve 3, the 3rd electromagnetism three
Logical reversal valve 4, the 4th T-way change-over solenoid valve 5, compressor 6, four-way reversing valve 7, electric expansion valve 8, the first plate type heat exchanger
13 and second plate type heat exchanger 9, evaporated in I interface end of first T-way change-over solenoid valve 2 and solar energy heating unit and changed
The port of export connection of hot device 111, II interface end of the first T-way change-over solenoid valve 2 is connected with I interface end of four-way reversing valve 7,
II, III, IV interface end of four-way reversing valve 7 suction end, I interface end of the second T-way change-over solenoid valve 3 respectively with compressor 6
And the exhaust end of compressor 6 is connected, the fluorine pipe of II interface end of the second T-way change-over solenoid valve 3 and the first plate type heat exchanger 13
Connection, III interface end of the second T-way change-over solenoid valve 3 is connected with the fluorine pipe of the second plate type heat exchanger 9, the first plate type heat exchanger
The 13 fluorine pipe other end is connected with II interface end of the 4th T-way change-over solenoid valve 5, the fluorine pipe other end of the second plate type heat exchanger 9
III interface end with the 4th T-way change-over solenoid valve 5 is connected, I interface end and the electric expansion valve 8 of the 4th T-way change-over solenoid valve 5
II interface end of connection, the other end of electric expansion valve 8 and the 3rd T-way change-over solenoid valve 4, the 3rd T-way change-over solenoid valve 4
I interface end is connected with the arrival end of evaporating heat exchanger 111, III interface end of the first T-way change-over solenoid valve 2, the 3rd electromagnetic three-way
III interface end of reversal valve 4 is connected with the fluorine pipe two ends of the second plate type heat exchanger 9 respectively.
Ground heat exchanger unit, including：The water pump 10 of underground buried tube 11 and second, the outlet of underground buried tube 11 and the second water pump
10 connections, the other end of the second water pump 10 is connected with water pipe one end of the second plate type heat exchanger 9, the water of the second plate type heat exchanger 9
The pipe other end is connected with the arrival end of underground buried tube 11.
Indoor end unit, including：The water pump 14 of room conditioning end 15 and first, the outlet of room conditioning end 15 and the
One water pump 14 is connected, and the other end of the first water pump 14 is connected with water pipe one end of the first plate type heat exchanger 13, the first plate-type heat-exchange
The water pipe other end of device 13 is connected with the entrance of room conditioning end 15；The room conditioning end 15 can using fan coil,
The mode of radiator or flooring radiation, and can be with parallel multiplex.
Control unit, including：Controller 12, the first temperature signal probe 121 and second temperature signal probe 122, first
Temperature signal probe 121 is arranged in solar energy heating evaporator 1, and second temperature signal probe 122 is arranged at first and board-like changes
At the pipe outlet of hot device 13, controller 12 is commutated with the first T-way change-over solenoid valve 2, the second electromagnetic three-way respectively by wire
Valve 3, the 3rd T-way change-over solenoid valve 4, the 4th T-way change-over solenoid valve 5, four-way reversing valve 7, the first water pump 14, the second water pump 10
Connected with compressor 6.
The solar energy heating unit, ground heat exchanger unit, indoor end unit are connected with heat pump main computer unit respectively
Together constitute solar heat pump and earth source heat pump combined air conditioning system, described control unit respectively with heat pump main computer unit,
Lower heat exchanger unit and indoor end unit are connected.
The control process of the solar heat pump and earth source heat pump combined air conditioning system is：
The controller 12 is provided with three kinds of operational modes：Heating mode, refrigeration mode and energy storage pattern.
1st, heating mode：Controller 12 is according to the first temperature signal probe 121 and the temperature of second temperature signal probe 122
Signal, is divided into three kinds of different heating operation patterns：
Wherein set TbIt is the plate core temperature of solar energy heating evaporator 1, Tbg、TbdRespectively solar energy heating evaporator 1
The default high temperature of plate core and low temperature, TNIt is air-conditioning supply water temperature, TNg 、TNdRespectively air-conditioning supplies water default high temperature and low temperature.
A, solar heat pump heating operation pattern：Work as Tbd﹤ Tb﹤ TbgAnd TNd﹤ TN﹤ TNgWhen, it is placed on solar energy heating evaporation
The first temperature signal probe 121 in device 1 is visited with the second temperature signal being placed at the pipe outlet of the first plate type heat exchanger 13
Temperature signal is transferred to controller 12 by head by holding wire, and controller 12 passes through wire after logic analysis is carried out to temperature signal
Send following control instruction：
Open the first T-way change-over solenoid valve 2（Ⅰ→Ⅱ）, the second T-way change-over solenoid valve 3（Ⅰ→Ⅱ）, the 3rd electromagnetism three
Logical reversal valve 4（Ⅱ→Ⅰ）, the 4th T-way change-over solenoid valve 5（Ⅱ→Ⅰ）, the first water pump 14, close the second water pump 10, now too
Sun can be completely used for heating as low-temperature heat source, the condensation heat that heat pump cycle is produced；
Specific work process is：Working medium becomes gaseous state, gaseous state after absorbing solar heat in solar energy heating evaporator 1
Working medium is by the first T-way change-over solenoid valve 2（Ⅰ→Ⅱ）The mistake that compressor 6 becomes HTHP is entered into four-way reversing valve 7
Hot gaseous working medium, the overheat gaseous working medium of HTHP is through the second T-way change-over solenoid valve 3（Ⅰ→Ⅱ）Into the first plate-type heat-exchange
Device 13 is condensed into liquid refrigerant, and condensation heat is completely used for indoor heating, and condensed liquid refrigerant is changed by the 4th electromagnetic three-way
To valve 5（Ⅱ→Ⅰ）Electric expansion valve 8 is entered into, the gas-liquid two-phase working medium of low-temp low-pressure, the gas-liquid two-phase of low-temp low-pressure is throttled into
Working medium is by the 3rd T-way change-over solenoid valve 4（Ⅱ→Ⅰ）Solar heat is absorbed into solar energy heating evaporator 1 become gaseous state
Working medium, completes a heat pump fluid circulation, and working medium and so on circulates work, and this operational mode is suitable suitable for solar irradiation intensity
In moment.
B, solar heat pump heating+storage energy operation pattern：When（Tb﹥ TbdAnd TN﹥ TNg）Or（Tb﹥ TbgAnd TN﹥ TNd）When, put
Put the probe of the first temperature signal in solar energy heating evaporator 1 121 and be placed on the pipe outlet of the first plate type heat exchanger 13
Temperature signal is transferred to controller 12 by the second temperature signal probe 122 at place by holding wire, and controller 12 is to temperature signal
Following control instruction is sent by wire after carrying out logic analysis：
Open the first T-way change-over solenoid valve 2（Ⅰ→Ⅱ）, the second T-way change-over solenoid valve 3（Ⅰ→Ⅱ、Ⅲ）, the 3rd electromagnetism
Three-way diverter valve 4（Ⅱ→Ⅰ）, the 4th T-way change-over solenoid valve 5（Ⅱ、Ⅲ→Ⅰ）, the first water pump 14 and the second water pump 10, now
Used as low-temperature heat source, for heating, another part is stored in underground to the condensation heat part that heat pump cycle is produced to solar energy；
Specific work process：Working medium becomes gaseous state, gaseous state work after absorbing solar heat in solar energy heating evaporator 1
Matter is by the first T-way change-over solenoid valve 2（Ⅰ→Ⅱ）The overheat that compressor 6 becomes HTHP is entered into four-way reversing valve 7
Gaseous working medium, the overheat gaseous working medium of HTHP is through the second T-way change-over solenoid valve 3（Ⅰ→Ⅱ、Ⅲ）It is divided into two-way, it is high all the way
The overheat gaseous working medium of warm high pressure is condensed into liquid refrigerant into the first plate type heat exchanger 13, and condensation heat is used for indoor heating, separately
The overheat gaseous working medium of HTHP is condensed into liquid refrigerant into the second plate type heat exchanger 9 all the way, and condensation heat is used to recover ground
The lower soil moisture, underground, the first plate type heat exchanger 13 and the condensed liquid of the second plate type heat exchanger 9 are stored in by heat
Working medium passes through the 4th T-way change-over solenoid valve 5（Ⅱ、Ⅲ→Ⅰ）Into electric expansion valve 8, the gas-liquid two-phase of low-temp low-pressure is throttled into
Working medium, the gas-liquid two-phase working medium of low-temp low-pressure is through the 3rd T-way change-over solenoid valve 4（Ⅱ→Ⅰ））Into solar energy heating evaporator 1
Absorb solar heat and become gaseous working medium, complete a heat pump fluid circulation, working medium and so on circulates work, this operation
Pattern is applied to the solar irradiation intensity moment higher.
C, Heating by Ground Source Heat Pump operational mode：Work as Tb﹤ TbdOr TN﹤ TNdWhen, it is placed in solar energy heating evaporator 1
One temperature signal probe 121 and the second temperature signal probe 122 being placed at the pipe outlet of the first plate type heat exchanger 13 pass through
Temperature signal is transferred to controller 12 by holding wire, controller 12 temperature signal is carried out after logic analysis by wire send with
Lower control instruction：
Open the first T-way change-over solenoid valve 2（Ⅲ→Ⅱ）, the second T-way change-over solenoid valve 3（Ⅰ→Ⅱ）, the 3rd electromagnetism three
Logical reversal valve 4（Ⅱ→Ⅲ）, the 4th T-way change-over solenoid valve 5（Ⅱ→Ⅰ）, the first water pump 14 and the second water pump 10；
Specific work process：Working medium becomes after the heat for coming from underground storage is absorbed in the second plate type heat exchanger 9
Into gaseous state, gaseous working medium is by the first T-way change-over solenoid valve 2（Ⅲ→Ⅱ）Become high into compressor 6 with four-way reversing valve 7
The overheat gaseous working medium of warm high pressure, the overheat gaseous working medium of HTHP is through the second T-way change-over solenoid valve 3（Ⅰ→Ⅱ）Into
One plate type heat exchanger 13 is condensed into liquid refrigerant, and condensation heat is completely used for indoor heating, and condensed liquid refrigerant is by the 4th
T-way change-over solenoid valve 5（Ⅱ→Ⅰ）Into electric expansion valve 8, the gas-liquid two-phase working medium of low-temp low-pressure is throttled into, low-temp low-pressure
Gas-liquid two-phase working medium is through the 3rd T-way change-over solenoid valve 4（Ⅱ→Ⅲ）Absorbed into the second plate type heat exchanger 9 and come from underground soil
Become gaseous working medium after the heat of earth storage, complete a heat pump fluid circulation, working medium and so on circulates work, this operation mould
Formula is applied to the solar irradiation intensity not enough moment, for example evening and overcast and rainy.
2nd, refrigeration mode：
Under cooling operation mode：Controller 12 sends following control instruction by wire, opens the first electromagnetic three-way and changes
To valve 2（Ⅱ→Ⅲ）, the second T-way change-over solenoid valve 3（Ⅱ→Ⅰ）, the 3rd T-way change-over solenoid valve 4（Ⅲ→Ⅱ）, the 4th electromagnetism
Three-way diverter valve 5（Ⅰ→Ⅱ）, the first water pump 14 and the second water pump 10, four-way reversing valve 7 changes direction.
Specific work process：Working medium becomes gaseous state work after the heat for coming from room is absorbed in the first plate type heat exchanger 13
Matter, gaseous working medium is by the second T-way change-over solenoid valve 3（Ⅱ→Ⅰ）Become HTHP into compressor 6 with four-way reversing valve 7
Overheat gaseous working medium, the overheat gaseous working medium of HTHP is through the first T-way change-over solenoid valve 2（Ⅱ→Ⅲ）Into the second plate
Formula heat exchanger 9 is condensed into liquid refrigerant, and condensation heat enters underground, and condensed liquid refrigerant is through the 3rd T-way change-over solenoid valve 4
（Ⅲ→Ⅱ）The gas-liquid two-phase working medium of low-temp low-pressure, the gas-liquid two-phase working medium warp of low-temp low-pressure are throttled into electric expansion valve 8
4th T-way change-over solenoid valve 5（Ⅰ→Ⅱ）Become gaseous state after absorbing the heat from room 16 into the first plate type heat exchanger 13
Working medium, completes a kind of refrigeration cycle, and working medium and so on circulates work.
3rd, energy storage pattern：
Under storage energy operation pattern：Work as Tb﹥ TbgWhen, the first temperature signal being placed in solar energy heating evaporator 1 is visited
First 121 are transferred to controller 12 by holding wire temperature signal, and controller 12 passes through after carrying out logic analysis to temperature signal
Wire sends following control instruction：
Open the first T-way change-over solenoid valve（Ⅰ→Ⅱ）, the second T-way change-over solenoid valve（Ⅰ→Ⅲ）, the 3rd electromagnetic three-way
Reversal valve（Ⅱ→Ⅰ）, the 4th T-way change-over solenoid valve（Ⅲ→Ⅰ）, the second water pump, four-way reversing valve direction and heating mode phase
Together；Now used as low-temperature heat source, the condensation heat that heat pump cycle is produced is completely used for the recovery and storage of underground temperature to solar energy
Energy；
Specific work process：Working medium becomes gaseous state, gaseous state work after absorbing solar heat in solar energy heating evaporator 1
Matter is by the first T-way change-over solenoid valve 2（Ⅰ→Ⅱ）The overheat that compressor 6 becomes HTHP is entered into four-way reversing valve 7
Gaseous working medium, the overheat gaseous working medium of HTHP is through the second T-way change-over solenoid valve 3（Ⅰ→Ⅲ）Into the second plate type heat exchanger
9 are condensed into liquid refrigerant, and condensation heat is completely used for the recovery and energy storage of underground temperature, and condensed liquid refrigerant is by
Four T-way change-over solenoid valves 5（Ⅲ→Ⅰ）Electric expansion valve 8 is entered into, the gas-liquid two-phase working medium of low-temp low-pressure is throttled into, low temperature is low
The gas-liquid two-phase working medium of pressure is by the 3rd T-way change-over solenoid valve 4（Ⅱ→Ⅰ）Solar energy is absorbed into solar energy heating evaporator 1
Heat becomes gaseous working medium, completes a heat pump fluid circulation, and working medium and so on circulates work, and this operational mode is applied to
Spring, the recovery and energy storage of autumn transition season underground temperature.
The beneficial effect of solar heat pump of the present invention and earth source heat pump combined air conditioning system and control method is：
First, the efficient air-conditioning system of winter continuous heating, cooling in summer is realized, being particularly suitable for the northern area of China makes
With；
2nd, in heat supply in winter, system is heated using solar heat pump during fine day, when solar irradiation intensity is larger, system
It is automatic that waste heat is stored in underground, evening and it is overcast and rainy when system automatically switch to Heating by Ground Source Heat Pump, it is ensured that winter supplies
Warm continuity and high efficiency；
3rd, system can avoid excessively taking heat for a long time from underground using solar source, have soil heat source enough
In the recovery cycle, keeping the utilization of the balance of underground temperature field, earth source heat pump can overcome solar heat pump by environmental influence
Defect, the daily stable operation of safeguards system；
4th, in northern area, taken with heating based on heat, summer air-conditioning heat release load takes thermic load much smaller than winter, causes
It is annual take/heat release is uneven, run several Nian Houhui and cause the soil moisture unbalance, system crash, and system of the invention due to
There is the concurrent heating of solar energy so that whole year takes/exothermic equilibrium；
5th, the heat-collecting plate core and evaporator with heat pump in flat panel solar heat collecting plate are formed integrally to form tube wing type evaporation
Device, uniformly fully, whole heat-collecting plate core surface temperature is uniform, surface heat migration loss is greatly reduced, while vapour for evaporation and heat-exchange
Liquid phase-change heat-exchange is tens times of heat convection, with respect to solar thermal collection system ultrahigh in efficiency；
6th, using refrigerant（R134a etc.）Used as heat pump fluid, the freezing point temperature of refrigerant is -100 DEG C or so, thoroughly
Solve the problems, such as the preventing freeze in winter of flat-plate solar collector.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, for example, increasing heat reclamation device, hot water preparing etc. in the form of serial or parallel connection is similarly included in of the invention special
In sharp protection domain.
Claims (5)
1. a kind of solar heat pump and earth source heat pump combined air conditioning system, it is characterised in that including：Solar energy heating unit, heat
Pump main computer unit, ground heat exchanger unit, indoor end unit and control unit, the solar energy heating unit, underground heat exchange
Device unit, indoor end unit are connected with heat pump main computer unit respectively, described control unit and heat pump main computer unit, underground heat exchange
Device unit and indoor end unit are connected,
Wherein heat pump main computer unit, including：First T-way change-over solenoid valve, the second T-way change-over solenoid valve, the 3rd electromagnetic three-way
Reversal valve, the 4th T-way change-over solenoid valve, compressor, four-way reversing valve, electric expansion valve, the first plate type heat exchanger and the second plate
Formula heat exchanger, I interface end of first T-way change-over solenoid valve and the port of export of evaporating heat exchanger in solar energy heating unit
Connection, II interface end of the first T-way change-over solenoid valve is connected with I interface end of four-way reversing valve, four-way reversing valve II, III,
The exhaust end of IV interface end suction end, I interface end of the second T-way change-over solenoid valve and compressor respectively with compressor connects
Connect, II interface end of the second T-way change-over solenoid valve is connected with the fluorine pipe of the first plate type heat exchanger, the second T-way change-over solenoid valve
III interface end be connected with the fluorine pipe of the second plate type heat exchanger, the fluorine pipe other end and the 4th electromagnetic three-way of the first plate type heat exchanger
The II interface end connection of reversal valve, the fluorine pipe other end of the second plate type heat exchanger and III interface end of the 4th T-way change-over solenoid valve
Connection, I interface end of the 4th T-way change-over solenoid valve is connected with electric expansion valve, the other end of electric expansion valve and the 3rd electromagnetism
II interface end of three-way diverter valve, I interface end of the 3rd T-way change-over solenoid valve is connected with the arrival end of evaporating heat exchanger, and first
III interface end of T-way change-over solenoid valve, III interface end of the 3rd T-way change-over solenoid valve respectively with the fluorine of the second plate type heat exchanger
Pipe two ends connect；
The indoor end unit includes：Room conditioning end and the first water pump, the outlet of room conditioning end and the first water pump
Connection, the other end of the first water pump is connected with water pipe one end of the first plate type heat exchanger, and the water pipe of the first plate type heat exchanger is another
End is connected with the entrance of room conditioning end.
2. solar heat pump according to claim 1 and earth source heat pump combined air conditioning system, it is characterised in that the sun
Energy heat collection unit includes：Heat absorbing fins, transparent cover plate, insulation frame and insulation backboard, multiple evaporating heat exchangers are set in turn in
Between multiple heat absorbing fins, multiple heat absorbing fins connections are integral, and heat absorbing fins top is provided with transparent cover plate, and side is provided with insulation
Frame, bottom is provided with insulation backboard.
3. solar heat pump according to claim 1 and earth source heat pump combined air conditioning system, it is characterised in that the underground
Heat exchanger unit includes：Underground buried tube and the second water pump, the outlet of underground buried tube are connected with the second water pump, the second water pump it is another
End is connected with water pipe one end of the second plate type heat exchanger, the water pipe other end of the second plate type heat exchanger and the arrival end of underground buried tube
Connection.
4. solar heat pump according to claim 3 and earth source heat pump combined air conditioning system, it is characterised in that the control
Unit includes：Controller, the first temperature signal probe and second temperature signal probe, the first temperature signal probe are arranged at the sun
Can collect in hot vaporizer, second temperature signal probe is arranged at the pipe outlet of the first plate type heat exchanger, controller is by leading
Line respectively with the first T-way change-over solenoid valve, the second T-way change-over solenoid valve, the 3rd T-way change-over solenoid valve, the 4th electromagnetic three-way
The connection of reversal valve, four-way reversing valve, the first water pump, the second water pump and compressor.
5. the control method of solar heat pump according to claim 4 and earth source heat pump combined air conditioning system, its feature exists
In, including following control model：Heating mode, refrigeration mode and energy storage pattern：
First, heating mode：Controller is divided into three according to the first temperature signal probe and the temperature signal of second temperature signal probe
Plant different heating operation patterns：
Wherein set TbIt is the plate core temperature of solar energy heating evaporator, Tbg、TbdThe plate core of respectively solar energy heating evaporator is pre-
If high temperature and low temperature, TNIt is air-conditioning supply water temperature, TNg 、TNdRespectively air-conditioning supplies water default high temperature and low temperature：
A, solar heat pump heating operation pattern：Work as Tbd﹤ Tb﹤ TbgAnd TNd﹤ TN﹤ TNgWhen, open the first T-way change-over solenoid valve（Ⅰ
→Ⅱ）, the second T-way change-over solenoid valve（Ⅰ→Ⅱ）, the 3rd T-way change-over solenoid valve（Ⅱ→Ⅰ）, the 4th T-way change-over solenoid valve
（Ⅱ→Ⅰ）, the first water pump, close the second water pump；
B, solar heat pump heating+storage energy operation pattern：When（Tb﹥ TbdAnd TN﹥ TNg）Or（Tb﹥ TbgAnd TN﹥ TNd）When, open the
One T-way change-over solenoid valve（Ⅰ→Ⅱ）, the second T-way change-over solenoid valve（Ⅰ→Ⅱ、Ⅲ）, the 3rd T-way change-over solenoid valve（Ⅱ→
Ⅰ）, the 4th T-way change-over solenoid valve（Ⅱ、Ⅲ→Ⅰ）, the first water pump and the second water pump；
C, Heating by Ground Source Heat Pump operational mode：Work as Tb﹤ TbdOr TN﹤ TNdWhen, open the first T-way change-over solenoid valve（Ⅲ→Ⅱ）,
Two T-way change-over solenoid valves（Ⅰ→Ⅱ）, the 3rd T-way change-over solenoid valve（Ⅱ→Ⅲ）, the 4th T-way change-over solenoid valve（Ⅱ→Ⅰ）、
First water pump and the second water pump；
2nd, refrigeration mode：
Under cooling operation mode：Open the first T-way change-over solenoid valve（Ⅱ→Ⅲ）, the second T-way change-over solenoid valve（Ⅱ→
Ⅰ）, the 3rd T-way change-over solenoid valve（Ⅲ→Ⅱ）, the 4th T-way change-over solenoid valve（Ⅰ→Ⅱ）, the first water pump and the second water pump, four
Logical reversal valve changes direction；
3rd, energy storage pattern：
Under storage energy operation pattern：Work as Tb﹥ TbgWhen, open the first T-way change-over solenoid valve（Ⅰ→Ⅱ）, the second electromagnetic three-way commutation
Valve（Ⅰ→Ⅲ）, the 3rd T-way change-over solenoid valve（Ⅱ→Ⅰ）, the 4th T-way change-over solenoid valve（Ⅲ→Ⅰ）, the second water pump, four-way changes
It is identical with heating mode to valve direction；Work as Tb≤TbgWhen, all shut down.
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| CN104534734B (en) * | 2014-12-04 | 2017-06-09 | 上海交通大学 | A kind of multiple source-coupled carbon dioxide earth-source hot-pump system |
| CN104633987B (en) * | 2015-01-08 | 2017-02-22 | 常州海卡太阳能热泵有限公司 | Solar heat pump heating system with self-driven separated heat pipe energy storage device and control method |
| CN104792067B (en) * | 2015-04-15 | 2017-09-12 | 常州海卡太阳能热泵有限公司 | Soil source solar heat pump warmhouse booth heating system and control method |
| CN105157273A (en) * | 2015-08-31 | 2015-12-16 | 北京建筑大学 | Family type heat pump system with combined application of solar energy and soil source |
| CN106907825A (en) * | 2017-02-06 | 2017-06-30 | 美的集团股份有限公司 | Air-conditioning system and air-conditioner control method |
| CN107747794A (en) * | 2017-08-18 | 2018-03-02 | 国网天津市电力公司 | The energy-saving control method that a kind of novel environmental temperature becomes excellent certainly |
| CN107781934A (en) * | 2017-11-08 | 2018-03-09 | 天津美意机电设备工程有限公司 | Earth source heat pump operation management system and implementation method |
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