CN109579357A - A kind of multi-connected machine heat pump system and control method with efficient recuperation of heat - Google Patents
A kind of multi-connected machine heat pump system and control method with efficient recuperation of heat Download PDFInfo
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- CN109579357A CN109579357A CN201811573058.XA CN201811573058A CN109579357A CN 109579357 A CN109579357 A CN 109579357A CN 201811573058 A CN201811573058 A CN 201811573058A CN 109579357 A CN109579357 A CN 109579357A
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- solenoid valve
- heat
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- temperature
- heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A kind of multi-connected machine heat pump system and control method with efficient recuperation of heat provided by the present invention, including evaporator, condenser, first frequency-changeable compressor, second frequency-changeable compressor, four-way valve, multi-joint indoor units, outdoor heat exchanger, water tank, first solenoid valve, second solenoid valve, third solenoid valve, 4th solenoid valve and the 5th solenoid valve, above-mentioned component constitutes the board-like heat recovery module and heat pump heat recovery module of system, it realizes in heat pump system process of refrigerastion, the heat in heat pump refrigerating is not only realized into recuperation of heat effective for heating water, also make hot-water heating system can be in different heating stable at room temperature, with energy saving, it is simple and reliable for structure, the advantages that maintaining easily.
Description
Technical field
The present invention relates to the technical fields of heat pump system, refer in particular to a kind of multi-connected machine heat pump system with efficient recuperation of heat
System and control method.
Background technique
Multi-connected machine heat pump system since its flexible control method and simple mounting means are widely used by people, but
In its independent cooling, since the heating capacity in whole process is directly by being placed in outdoor outdoor unit row outwardly, in this way, not
The energy consumption of outdoor fan is increased only, the heat for also generating refrigeration is expelled directly out to cause energy waste, existing by will be hot
Water system is directly connected in heat pump system in parallel or series, can be in hot water using the heat generated in heat pump system process of refrigerastion
It heats in system through heat exchanger with hot water preparing, but this disadvantage has: first is that heat pump system can change according to outdoor environment temperature
Internal condensation agent flux, and hydrothermal system and heat pump system are directly connected to will receive the limitation of condensing pressure, lead to the heat produced
Coolant-temperature gage is not high, is not able to satisfy the use demand of people；Second is that making to produce since heat pump system and hot-water heating system operating condition difference are big
When raising speed it is slower, the two need to be effectively integrated so that can quickly be produced under different outdoor temperatures meet people requirement
Hot water temperature.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of multi-connected machine heat pumps with efficient recuperation of heat
System and control method.
In order to achieve the above purpose, a kind of multi-connected machine heat pump system with efficient recuperation of heat provided by the present invention,
Including evaporator, condenser, the first frequency-changeable compressor, the second frequency-changeable compressor, four-way valve, multi-joint indoor units, outdoor heat exchange
Device, wherein four interfaces A, B, C, D of the four-way valve respectively with the output end of the second frequency-changeable compressor, outdoor heat exchanger
One end of one end, the input terminal R2 of the second frequency-changeable compressor and multi-joint indoor units communicates, the other end of the outdoor heat exchanger
It is communicated with the other end of multi-joint indoor units；In the evaporator setting can heat exchange first flow path and second flow path；Also wrap
Water tank, the first solenoid valve, second solenoid valve, third solenoid valve, the 4th solenoid valve and the 5th solenoid valve are included, wherein described
The outside of water tank passes through delivery outlet and the input port that the heat exchanger tube being preset with is separately connected water tank, and heat exchanger tube circulation is worn
Condenser is crossed, the both ends of first solenoid valve are communicated with the interface A of the output end of the second frequency-changeable compressor and four-way valve respectively；
Above-mentioned component constitutes the board-like heat recovery module and heat pump heat recovery module of system；
The board-like heat recovery module flow path composition: the both ends of the second solenoid valve are exported with the second frequency-changeable compressor respectively
End and one end of condenser communicate, the both ends of the third solenoid valve respectively with the interface A of four-way valve and the other end of condenser
It communicates；
The heat pump heat recovery module flow path composition: the output end of first frequency-changeable compressor is communicated with one end of condenser,
The first flow path both ends of the evaporator are communicated with the input terminal of the first frequency-changeable compressor and condenser respectively, the evaporator
Second flow path both ends are communicated with the 4th solenoid valve and the 5th solenoid valve respectively, and the 4th solenoid valve and the second frequency-changeable compressor are defeated
Outlet communicates, and the 5th solenoid valve is communicated with the interface A of four-way valve；
It further, further include oil eliminator, wherein the output end of one end of the oil eliminator and second frequency-changeable compressor
Mouth communicates, and the other end of the oil eliminator is communicated with the first solenoid valve, second solenoid valve and the 4th solenoid valve respectively.
It further, further include gas-liquid separator, wherein the gas-liquid separator is set to second frequency-changeable compressor
Between input terminal R2 and the interface C of four-way valve.
It further, further include a subcooler being set between outdoor heat exchanger and multi-joint indoor units, wherein the subcooler
Including tetra- interfaces of E, F, G, H, the interface E and interface G of the subcooler respectively with one end of the outdoor heat exchanger and multi-joint
One end of indoor units communicates, and the interface F and interface H of the subcooler are compressed with the interface G of subcooler and the second frequency conversion respectively
The input terminal R1 of machine is communicated, and the second electric expansion valve is equipped between the interface F and interface G of the subcooler.
Further, third electric expansion valve is equipped between the outdoor heat exchanger and the interface E of the subcooler.
It further, further include having in water tank and being used for the first temperature detector of real-time monitoring water temperature and be set to outdoor
Second temperature detector for real-time monitoring outdoor temperature.
It is real-time to define first temperature detector for a kind of multi-connected machine heat pump system control method with efficient recuperation of heat
Monitoring water temperature is real time temperature T1, and required water temperature is set temperature T1s, room outside the second temperature detector real-time monitoring room
Temperature is real time temperature T2, and required outdoor temperature is set temperature T2s, wherein system is according to real time temperature T1 and set temperature
Size between T1s, the size between real time temperature T2 and set temperature T2s, starts board-like heat recovery module or heat accordingly
Pump heat recovery module works；
Heat pump heating mode: when set temperature T1s is greater than real time temperature T1, if set temperature T2s is greater than real time temperature T2,
The first solenoid valve, second solenoid valve and third solenoid valve are closed, the 4th solenoid valve and the 5th solenoid valve are opened, system starts heat pump
Heat recovery module starts to heat work；
Board-like heating mode: when set temperature T1s is greater than real time temperature T1, if set temperature T2s is less than real time temperature T2,
The first solenoid valve, the 4th solenoid valve and the 5th solenoid valve are closed, second solenoid valve and third solenoid valve are opened, system starting is board-like
Heat recovery module starts to heat work；
Close heating mode: when the difference of set temperature Ts and real time temperature T is less than or equal to 0 °, the first solenoid valve of unlatching,
Third solenoid valve and the 5th solenoid valve, close second solenoid valve and the 4th solenoid valve, and system stops starting board-like heat recovery module
Or heat pump heat recovery module.
Further, system is big according to real time temperature T1 and the difference of preset temperature T1s in the case where being in heat pump heating mode
Small, the working frequency of first frequency-changeable compressor and the second frequency-changeable compressor is in/incremental variations of successively decreasing step by step.
The present invention uses above-mentioned scheme, the beneficial effect is that: the present invention is by between hot-water heating system and heat pump system
Multiple solenoid valves, which are arranged, to be realized in heat pump system process of refrigerastion with alternately on-off at different heating modes, not only will be hot
Heat in pump refrigeration realizes recuperation of heat effective for heating water, also makes hot-water heating system can be in different heating stable at room temperature, tool
There is energy saving, simple and reliable for structure, the advantages that maintaining easily.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is control flow chart of the invention.
Wherein, the first solenoid valve of 1-, 2- second solenoid valve, 3- third solenoid valve, the 4th solenoid valve of 4-, the 5th electromagnetism of 5-
Valve, 6- water pump, the first frequency-changeable compressor of 7-, the first electric expansion valve of 8-, 9- evaporator, 10- condenser, 11- water tank, 12-
Two frequency-changeable compressors, 13- oil eliminator, 14- four-way valve, 15- outdoor heat exchanger, 16- third electric expansion valve, the second electricity of 17-
Sub- expansion valve, 18- subcooler, 19- indoor heat exchanger, 20- gas-liquid separator, the first temperature detector of 21-, 22- second temperature
Detector, 23- solenoid valve.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Referring to attached drawing 1, in the present embodiment, a kind of multi-connected machine heat pump system with efficient recuperation of heat, main includes steaming
Send out device 9, condenser 10, water tank 11, water pump 6, the first frequency-changeable compressor 7, the second frequency-changeable compressor 12, four-way valve 14, multi-joint room
Interior unit, subcooler 18, outdoor heat exchanger 15, oil eliminator 13, gas-liquid separator 20, the first solenoid valve 1, second solenoid valve 2,
Third solenoid valve 3, the 4th solenoid valve 4 and the 5th solenoid valve 5, wherein in the present embodiment, four-way valve 14 includes A, B, C, D tetra-
A interface, subcooler 18 include tetra- interfaces of E, F, G, H, multi-joint indoor units be connected in parallel by multiple indoor heat exchangers 19 (
The number of indoor heat exchanger 19 is three in the present embodiment, in addition, 19 number of indoor heat exchanger can be determined according to actual needs),
Specifically, 12 output end of the second frequency-changeable compressor is communicated with the interface A of four-way valve 14, oil eliminator 13 is compressed set on the second frequency conversion
Between machine 12 and four-way valve 14, that is, the both ends of oil eliminator 13 respectively with the output end and four-way valve 14 of the second frequency-changeable compressor 12
Interface A be connected, the both ends of outdoor heat exchanger 15 respectively with the interface B of four-way valve 14 and any indoor heat exchanger 19 one
End communicates, wherein subcooler 18 is set between outdoor heat exchanger 15 and any indoor heat exchanger 19, the interface E of the subcooler 18
It is communicated respectively with one end of one end of outdoor heat exchanger 15 and any indoor heat exchanger 19 with interface G, the subcooler 18 connects
Input terminal R1 of the mouth F and interface H respectively with the interface G of subcooler 18 and the second frequency-changeable compressor 12 is communicated, and further, outdoor is changed
It is equipped with third electric expansion valve 16 between hot device 15 and the interface E of subcooler 18, the is equipped between the interface F and interface G of subcooler 18
Two electric expansion valves 17, by the way that the aperture of electric expansion valve is arranged to adjust degree of supercooling and play reducing pressure by regulating flow to refrigerant in pipeline
Effect (subcooler 18 and electric expansion valve are component commonly used in the art, and technical staff can be known by the relevant technologies handbook,
This does not repeat its principle), the other end of any indoor heat exchanger 19 is communicated with the interface D of four-way valve 14, in addition, gas-liquid
The both ends of separator 20 are communicated with the input terminal R2 of the interface C of four-way valve 14 and the second frequency-changeable compressor 12 respectively, further,
In the present embodiment, solenoid valve 23 is equipped between the interface H of subcooler 18 and the input terminal R1 of the second frequency-changeable compressor 12, it is electric when opening
When magnet valve 23, refrigerant is through 12 output end of the second frequency-changeable compressor, oil eliminator 13, four-way valve 14, outdoor heat exchanger 15, subcooler
18 interface E and interface G, the second electric expansion valve 17, the interface F of subcooler 18 and interface H and the second frequency-changeable compressor 12 are defeated
Enter to hold R1 to constitute the increasing enthalpy flow path of heat pump system, by adding auxiliary increasing enthalpy flow path so that part refrigerant is in refrigerative circle system
In can be directly entered the second frequency-changeable compressor 12 and carry out fluid infusion or tonifying Qi, the internal circulating load of heat pump system circulation and sustainable can be enhanced
Property；In addition, in the present embodiment, 1 both ends of the first solenoid valve respectively with the output end and four-way valve 14 of the second frequency-changeable compressor 12
Interface A communicate (since oil eliminator 13 is between the second frequency-changeable compressor 12 and four-way valve 14, that is, the both ends of the first solenoid valve 1
Communicated respectively with the interface A of oil eliminator 13 and four-way valve 14), by the opening and closing of the first solenoid valve 1 to control connection or blocking
Whether the refrigerant through 12 output end of the second frequency-changeable compressor enters at the interface A of four-way valve；
Further, in the present embodiment, in the evaporator 9 setting can heat exchange first flow path and second flow path, water tank 11
Outside pass through delivery outlet and input port that the heat exchanger tube that is preset with is separately connected water tank 11,11 equipped at outlet port of the water tank setting
There is water pump 6, wherein heat exchanger tube passes through condenser 10, extracts the water in water tank 11 to heat exchanger tube by water pump 6, and condensing
Flow back into after heating in device 10 to obtain required hot water in water tank 11, above-mentioned component constitute system board-like heat recovery module and
Heat pump heat recovery module, in the present embodiment, board-like heat recovery module flow path composition are as follows: the both ends of second solenoid valve 2 respectively with
One end of second frequency-changeable compressor, 12 output end and condenser 10 communicates (since oil eliminator 13 is connected to the second frequency-changeable compressor
On 12 output ends, therefore the both ends of substantially second solenoid valve 2 are communicated with one end of oil eliminator 13 and condenser 10 respectively),
The both ends of the third solenoid valve 3 are communicated with the other end of the interface A of four-way valve 14 and condenser 10 respectively；
In addition, heat pump heat recovery module flow path forms are as follows: one end phase of the output end of the first frequency-changeable compressor 7 and condenser 10
Logical, the first flow path both ends of evaporator 9 are communicated with the input terminal of the first frequency-changeable compressor 7 and condenser 10 respectively, evaporator 9
Second flow path both ends are communicated with the 4th solenoid valve 4 and the 5th solenoid valve 5 respectively, the 4th solenoid valve 4 and the second frequency-changeable compressor 12
Output end communicate (since oil eliminator 13 is connected on 12 output end of the second frequency-changeable compressor, substantial 4th solenoid valve 4
Communicated with oil eliminator 13), the 5th solenoid valve 5 is communicated with the interface A of four-way valve 14；Further, in condenser 10 and evaporator 9
Between be equipped with the first electric expansion valve 8 for being depressured to coolant throttle.
Above-mentioned board-like heat recovery module and heat pump heat recovery module form heat pump heating mode, plate in the present embodiment system
Formula heating mode and closing heating mode, in addition, in the present embodiment further including having in water tank 11 and for real-time monitoring
First temperature detector 21 of water temperature, set on second temperature detector 22 outdoor and for real-time monitoring outdoor temperature, wherein
Defining the 21 real-time monitoring water temperature of the first temperature detector is real time temperature T1, and required water temperature is set temperature T1s, definition
The 22 real-time monitoring outdoor temperature of second temperature detector is real time temperature T2, and required outdoor temperature is set temperature T2s,
Wherein, compared with system is according to the size between real time temperature T1 and set temperature T1s, real time temperature T2 and set temperature T2s it
Between size compare, start board-like heat recovery module accordingly or heat pump heat recovery module work, for convenient for technical staff
Understanding to the present embodiment is illustrated the present embodiment below with reference to specific example:
As shown in Fig. 2, when set temperature T1s is greater than real time temperature T1, if set temperature T2s is greater than real time temperature T2(that is, T2
When < T2s, if T1 < T1s), at this time since heat pump refrigerating cold medium flux (pressure) is smaller, system starts heat pump heat recovery module
Start to heat work；The first solenoid valve 1, second solenoid valve 2 and third solenoid valve 3 are closed, the 4, the 5th electricity of the 4th solenoid valve is opened
Magnet valve 5 and water pump 6, working method are as follows: when the refrigerant in high temperature and pressure through the first frequency-changeable compressor 7 flows through condenser 10 into
To be heated to the water in heat exchanger tube in condenser 10, (water after heating returns to water tank 11 by heat exchanger tube for row condensation heat release
In), first flow path evaporation of the refrigerant being in a liquid state after 8 reducing pressure by regulating flow of electric expansion valve through evaporator 9 is then condensed in gaseous state
And 7 input terminal of frequency-changeable compressor is flow back into, heating is recycled with this, what it is through 12 output end of the second frequency-changeable compressor is in high temperature and pressure
Refrigerant passes through the second flow path for flowing into evaporator 9 through the 4th solenoid valve 4 after 13 Oil-gas Separation of oil eliminator and carries out heat release cooling simultaneously
Heat exchange is carried out with the refrigerant for flowing to first flow path in evaporator 9 in heat pump heat recovery module, that is, utilizes heat pump heat recovery module
The heat of middle refrigerant refrigerant of sorption type heat pump cooling system in evaporator 9 follows to improve heat pump heat recovery module refrigerant
Circular rector and the refrigerant degree of superheat of the first frequency-changeable compressor 7 reduce compression ratio, and then improve 7 heating capacity of the first frequency-changeable compressor
And Energy Efficiency Ratio, refrigerant flow to after the 5th solenoid valve 5 the interface A for flowing to four-way valve 14 from the second flow path of evaporator 9, then refrigerant
It flow to outdoor heat exchanger 15 to carry out after condensation heat release is in a liquid state after 16 reducing pressure by regulating flow of third electric expansion valve, refrigerant is through subcooler
18 interface E and interface G enters the room heat exchanger 19 and is evaporated refrigeration, the interface D in gaseous refrigerant through four-way valve and connects
Mouthful C and cross after 20 gas-liquid separation of gas-liquid separator the input terminal R2 for flowing to the second frequency-changeable compressor 12, by above-mentioned circulation to
The heating work of heat pump heating mode is realized, until the temperature difference (T1s-T1) is less than or equal to 0 DEG C；
Further, according to the size of the difference (that is, T1s- T1) of real time temperature T1 and preset temperature T1s, adjustment makes the first frequency conversion pressure
The working frequency of contracting machine 7 and the second frequency-changeable compressor 12 in successively decreasing or incremental variations step by step, e.g., when 5 T1≤10 DEG C < T1s-
When, it adjusts increase 1 grade on the primary frequency of the first frequency-changeable compressor 7 and the second frequency-changeable compressor 12 at this time；As T1s- T1 > 10
DEG C when, 7 frequency of the first frequency-changeable compressor is adjusted to maximum at this time, the second frequency-changeable compressor 12 increases 1 grade on primary frequency, if
At 5 DEG C of T1s-T1 <, frequency-changeable compressor 7 is adjusted at this time and subtracts 1 on primary frequency grade, the second frequency-changeable compressor 12 is on primary frequency
Subtract 1 grade；
When set temperature T1s is greater than real time temperature T1, if set temperature T2s is less than real time temperature T2(that is, when T2 >=T2s, if
T1 < T1s), at this time since heat pump refrigerating cold medium flux (pressure) is larger, system starts board-like heat recovery module and starts to heat work
Make；The first solenoid valve 1, the 4th solenoid valve 4 and the 5th solenoid valve 5 are closed, second solenoid valve 2 and third solenoid valve 3 and water are opened
Pump 6, working method are as follows: the refrigerant in high temperature and pressure through 12 output end of the second frequency-changeable compressor passes through 13 oil gas of oil eliminator
After separation through second solenoid valve 2 flow into condenser 10 when carried out condensation heat release with to the water flowed through in condenser 10 in heat exchanger tube into
Row heating (water after heating is returned in water tank 11 by heat exchanger tube), then condenses the refrigerant being in a liquid state and flows through third solenoid valve 3
To the interface A of four-way valve 14, then refrigerant flow to outdoor heat exchanger 15 carry out condensation heat release in after gaseous state through third electronic expansion
After 16 reducing pressure by regulating flow of valve, refrigerant enters the room heat exchanger 19 by the interface E and interface G of subcooler 18 and is evaporated refrigeration, is in
Gaseous refrigerant flow to the second frequency conversion compression through the interface D of four-way valve 14 and interface C and after crossing 20 gas-liquid separation of gas-liquid separator
The input terminal R2 of machine 12 realizes the heating work of board-like heating mode by above-mentioned circulation, until the temperature difference (T1s-T1) is small
In or equal to 0 DEG C.
It is at this time pass when the difference of set temperature Ts and real time temperature T is less than or equal to 0 ° (that is, T1s-T1≤0 DEG C)
Heating mode is closed, system stops starting board-like heat recovery module or heat pump heat recovery module, opens the first solenoid valve 1, third electricity
Magnet valve 3 and the 5th solenoid valve 5 close second solenoid valve 2 and the 4th solenoid valve 4, heat pump system working method are as follows: through the second frequency conversion
The refrigerant in high temperature and pressure of 12 output end of compressor is by flowing into four-way through the first solenoid valve 1 after 13 Oil-gas Separation of oil eliminator
The interface A of valve 14, then refrigerant flow to outdoor heat exchanger 15 carry out condensation heat release in after gaseous state through 16 section of third electric expansion valve
After stream decompression, refrigerant enters the room heat exchanger 19 by the interface E and interface G of subcooler 18 and is evaporated refrigeration, in gaseous
Refrigerant flow to the second frequency-changeable compressor 12 through the interface D of four-way valve 14 and interface C and after crossing 20 gas-liquid separation of gas-liquid separator
Input terminal R2 recycles completion cooling system with this.
The embodiment of the above is only presently preferred embodiments of the present invention, not does limit in any form to the present invention
System.Anyone skilled in the art utilizes the skill of the disclosure above without departing from the scope of the technical proposal of the invention
Art content makes more possible variations and retouching to technical solution of the present invention, or modification is equivalent embodiment of the invention.
Therefore all contents without departing from technical solution of the present invention, equivalent equivalence changes, should all be covered by made by thinking according to the present invention
In protection scope of the present invention.
Claims (9)
1. a kind of multi-connected machine heat pump system with efficient recuperation of heat, including evaporator (9), condenser (10), the first frequency conversion pressure
Contracting machine (7), the second frequency-changeable compressor (12), four-way valve (14), multi-joint indoor units, outdoor heat exchanger (15), wherein described four
Four interfaces A, B, C, D of port valve (14) respectively with the output end of the second frequency-changeable compressor (12), outdoor heat exchanger (15) one
The one end at end, the input terminal R2 of the second frequency-changeable compressor (12) and multi-joint indoor units communicates, the outdoor heat exchanger (15)
The other end is communicated with the other end of multi-joint indoor units；In the evaporator (9) setting can heat exchange first flow path and second
Flow path；It is characterized by also including have water tank (11), the first solenoid valve (1), second solenoid valve (2), third solenoid valve (3),
Four solenoid valves (4) and the 5th solenoid valve (5), wherein pass through the heat exchanger tube being preset in the outside of the water tank (11) and connect respectively
The delivery outlet of water receiving case (11) and input port, and the heat exchanger tube circulates through condenser (10), first solenoid valve (1)
Both ends communicated respectively with the interface A of the output end of the second frequency-changeable compressor (12) and four-way valve (14)；Above-mentioned component constitutes
The board-like heat recovery module and heat pump heat recovery module of system；
The board-like heat recovery module flow path composition: the both ends of the second solenoid valve (2) respectively with the second frequency-changeable compressor
(12) one end of output end and condenser (10) communicates, and the both ends of the third solenoid valve (3) connect with four-way valve (14) respectively
The other end of mouth A and condenser (10) communicates；
Heat pump heat recovery module flow path composition: the one of the output end of first frequency-changeable compressor (7) and condenser (10)
End communicates, the first flow path both ends of the evaporator (9) respectively with the input terminal of the first frequency-changeable compressor (7) and condenser (10)
It communicating, the second flow path both ends of the evaporator (9) are communicated with the 4th solenoid valve (4) and the 5th solenoid valve (5) respectively, and described
Four solenoid valves (4) are communicated with the second frequency-changeable compressor (12) output end, the interface of the 5th solenoid valve (5) and four-way valve (14)
A is communicated.
2. a kind of multi-connected machine heat pump system with efficient recuperation of heat according to claim 1, it is characterised in that: further include
Oil eliminator (13), wherein the output port phase of one end of the oil eliminator (13) and second frequency-changeable compressor (12)
It is logical, the other end of the oil eliminator (13) respectively with the first solenoid valve (1), second solenoid valve (2) and the 4th solenoid valve (4) phase
It is logical.
3. a kind of multi-connected machine heat pump system with efficient recuperation of heat according to claim 1, it is characterised in that: further include
Gas-liquid separator (20), wherein the gas-liquid separator (20) is set to the input terminal R2 of second frequency-changeable compressor (12)
Between the interface C of four-way valve (14).
4. a kind of multi-connected machine heat pump system with efficient recuperation of heat according to claim 1, it is characterised in that: described
The first electric expansion valve (8) are equipped between condenser (10) and the evaporator (9).
5. a kind of multi-connected machine heat pump system with efficient recuperation of heat according to claim 1, it is characterised in that: also wrap
Include one and be set to subcooler (18) between outdoor heat exchanger (15) and multi-joint indoor units, wherein the subcooler (18) include E,
F, tetra- interfaces of G, H, the interface E and interface G of the subcooler (18) respectively with one end of the outdoor heat exchanger (15) and more
One end of connection indoor units communicates, the interface F and interface H of the subcooler (18) respectively with the interface G of subcooler (18) and the
The input terminal R1 of two frequency-changeable compressors (12) is communicated, and the second electronic expansion is equipped between the interface F and interface G of the subcooler (18)
Valve (17).
6. a kind of multi-connected machine heat pump system with efficient recuperation of heat according to claim 5, it is characterised in that: described
Third electric expansion valve (16) are equipped between outdoor heat exchanger (15) and the interface E of the subcooler (18).
7. a kind of multi-connected machine heat pump system with efficient recuperation of heat according to claim 1, it is characterised in that: also wrap
It includes the first temperature detector (21) in water tank (10) and for real-time monitoring water temperature and is set to outdoor for supervising in real time
Survey the second temperature detector (22) of outdoor temperature.
8. a kind of a kind of control of multi-connected machine heat pump system with efficient recuperation of heat as described in claim 1-7 any one
Method, it is characterised in that: it is warm in real time for defining the first temperature detector (21) real-time monitoring water temperature
T1 is spent, required water temperature is set temperature T1s, and room temperature is real-time outside second temperature detector (22) the real-time monitoring room
Temperature T2, required outdoor temperature are set temperature T2s, wherein system is according between real time temperature T1 and set temperature T1s
Size compares, and compared with the size between real time temperature T2 and set temperature T2s, starts board-like heat recovery module or heat pump accordingly
Heat recovery module works；
Heat pump heating mode: when set temperature T1s is greater than real time temperature T1, if set temperature T2s is greater than real time temperature T2,
The first solenoid valve (1), second solenoid valve (2) and third solenoid valve (3) are closed, the 4th solenoid valve (4) and the 5th solenoid valve are opened
(5), system starting heat pump heat recovery module starts to heat work；
Board-like heating mode: when set temperature T1s is greater than real time temperature T1, if set temperature T2s is less than real time temperature T2,
The first solenoid valve (1), the 4th solenoid valve (4) and the 5th solenoid valve (5) are closed, second solenoid valve (2) and third solenoid valve are opened
(3), system starts board-like heat recovery module and starts to heat work；
It closes heating mode: when the difference of set temperature Ts and real time temperature T is less than or equal to 0 °, opening the first solenoid valve
(1), third solenoid valve (3) and the 5th solenoid valve (5), close second solenoid valve (2) and the 4th solenoid valve (4), and system stopping is opened
Movable plate formula heat recovery module or heat pump heat recovery module.
9. a kind of control method of multi-connected machine heat pump system with efficient recuperation of heat according to claim 8, feature
Be: system is in the case where being in heat pump heating mode, according to the size of the difference of real time temperature T1 and preset temperature T1s, described first
The working frequency of frequency-changeable compressor (7) and the second frequency-changeable compressor (12) is in/incremental variations of successively decreasing step by step.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111104A (en) * | 2021-11-17 | 2022-03-01 | 青岛海信日立空调***有限公司 | Multi-split system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062495A (en) * | 2010-09-09 | 2011-05-18 | 宁波奥克斯电气有限公司 | Direct current variable frequency multifunctional air conditioning system and control method thereof |
| CN102679482A (en) * | 2012-05-25 | 2012-09-19 | 宁波奥克斯空调有限公司 | Heat recovery multiplex system based on variable-frequency air conditioner and control method thereof |
| CN202581678U (en) * | 2012-03-28 | 2012-12-05 | Tcl空调器(中山)有限公司 | Multi-couple unit system with heat recovery function |
| CN203595314U (en) * | 2013-07-03 | 2014-05-14 | Tcl空调器(中山)有限公司 | Multi-online system |
| CN203785307U (en) * | 2013-12-03 | 2014-08-20 | 李东灿 | Ultralow-temperature air energy double-compressor heat pump |
| CN206269424U (en) * | 2016-10-26 | 2017-06-20 | 广东高而美制冷设备有限公司 | It is a kind of can recuperation of heat purging system |
| CN108088008A (en) * | 2017-12-12 | 2018-05-29 | 珠海格力电器股份有限公司 | Multi-split heat recovery system and air conditioning device |
| CN108731187A (en) * | 2018-06-20 | 2018-11-02 | 广东美的暖通设备有限公司 | Three pipe heat-reclamation multi-compressors systems and its control method |
| CN108885031A (en) * | 2016-04-21 | 2018-11-23 | 三菱电机株式会社 | Heat-elimination recovery type air attemperation apparatus |
-
2018
- 2018-12-21 CN CN201811573058.XA patent/CN109579357B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062495A (en) * | 2010-09-09 | 2011-05-18 | 宁波奥克斯电气有限公司 | Direct current variable frequency multifunctional air conditioning system and control method thereof |
| CN202581678U (en) * | 2012-03-28 | 2012-12-05 | Tcl空调器(中山)有限公司 | Multi-couple unit system with heat recovery function |
| CN102679482A (en) * | 2012-05-25 | 2012-09-19 | 宁波奥克斯空调有限公司 | Heat recovery multiplex system based on variable-frequency air conditioner and control method thereof |
| CN203595314U (en) * | 2013-07-03 | 2014-05-14 | Tcl空调器(中山)有限公司 | Multi-online system |
| CN203785307U (en) * | 2013-12-03 | 2014-08-20 | 李东灿 | Ultralow-temperature air energy double-compressor heat pump |
| CN108885031A (en) * | 2016-04-21 | 2018-11-23 | 三菱电机株式会社 | Heat-elimination recovery type air attemperation apparatus |
| CN206269424U (en) * | 2016-10-26 | 2017-06-20 | 广东高而美制冷设备有限公司 | It is a kind of can recuperation of heat purging system |
| CN108088008A (en) * | 2017-12-12 | 2018-05-29 | 珠海格力电器股份有限公司 | Multi-split heat recovery system and air conditioning device |
| CN108731187A (en) * | 2018-06-20 | 2018-11-02 | 广东美的暖通设备有限公司 | Three pipe heat-reclamation multi-compressors systems and its control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111104A (en) * | 2021-11-17 | 2022-03-01 | 青岛海信日立空调***有限公司 | Multi-split system |
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