CN108954885A - Air conditioner, air conditioner heat pump system and its control method - Google Patents
Air conditioner, air conditioner heat pump system and its control method Download PDFInfo
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- CN108954885A CN108954885A CN201811116065.7A CN201811116065A CN108954885A CN 108954885 A CN108954885 A CN 108954885A CN 201811116065 A CN201811116065 A CN 201811116065A CN 108954885 A CN108954885 A CN 108954885A
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- mainboard
- air conditioner
- pump system
- heat pump
- temperature value
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- 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
Abstract
The present invention provides a kind of air conditioner heat pump system, it is related to the compressor assembly technical field of circulation, the system includes double-stage compressor, reversal valve, flash evaporation, First Heat Exchanger, the second heat exchanger and mainboard cooling circuit, and double-stage compressor includes low-voltage interface, middle crimping mouth and high voltage interface；Reversal valve is connected to high voltage interface；The steam (vapor) outlet of flash evaporation and middle pressure orifice；First Heat Exchanger is connected to reversal valve and flash evaporation, and the second heat exchanger is connected to reversal valve and flash evaporation；Mainboard cooling circuit includes cooling entrance and coolant outlet, and cooling entrance is connected to the steam (vapor) outlet of flash evaporation, coolant outlet and middle pressure orifice.Air conditioner of the invention includes air conditioner heat pump system above-mentioned.Control heat pump system control method of the invention determines that the logical of mainboard cooling circuit closes according to mainboard temperature.Not only can guarantee that mainboard was cooling good, but also taken into account the thermal efficiency of air conditioner heat pump system, convenient for persistently using the cooling mainboard of refrigerant steam, make mainboard it is continual and steady be maintained at suitable temperature.
Description
Technical field
The present invention relates to the compressor assembly technical fields of circulation, specifically, being to be related to a kind of air conditioner, air-conditioning heat pump
System and its control method.
Background technique
In air-conditioning system, the temperature of mainboard performance when more than 40 degrees Celsius can be decreased obviously, and mainboard temperature is being lower than 40
Degree Celsius when temperature change on mainboard performance influence it is unobvious；And the load of mainboard is larger and heat production is more, is very easy to
The excessively high phenomenon of existing temperature, therefore the control of the temperature of mainboard is had into larger impact to the performance of air-conditioning in suitable range.
Refrigerant (refrigerant) is the medium that air-conditioning system completes heat exchange, is circulated within air-conditioning systems, the prior art
The mainboard cooling circuit (refrigerant branch) for flowing through mainboard is added in Two-stage Compression second throttle air-conditioning system, by for mainboard it is cold
But circuit circulation refrigerant liquid (refrigerant liquid) implements to cool down to mainboard, since the temperature of refrigerant liquid is lower, this kind of side
The mainboard cooling circuit of formula can realize quickly heat exchange with mainboard, obvious to mainboard cooling effect.
However, since the temperature of refrigerant liquid is lower, on the one hand, be connected with the mainboard cooling circuit of refrigerant liquid with mainboard
Also it is easy a large amount of heats absorbed in environment while cooling heat transferring, causes the load of double-stage compressor to increase, system is caused to exist
Thermal efficiency under cooling condition reduces；On the other hand, the mainboard cooling circuit for being connected with refrigerant liquid persistently cools down mainboard, is easy to make
Mainboard temperature is significantly lower than 40 degrees Celsius (such as 30 degrees Celsius or less), and mainboard cooling circuit sub-cooled mainboard not only will not be bright
It is aobvious to promote mainboard performance, but also can be brought into air conditioner heat pump system due to amount of heat by refrigerant liquid, cause Two-stage Compression
The load of machine increases, and shortens the double-stage compressor service life, and thermal efficiency of the system under cooling condition is caused to reduce.
Summary of the invention
To solve the above-mentioned problems, one of the objects of the present invention is to provide one kind both to have guaranteed the cooling good, temperature of mainboard
Stablize, and the air conditioner heat pump system that the system thermal efficiency of avoiding is substantially reduced.
To achieve the goals above, air conditioner heat pump system provided by the invention, including double-stage compressor, flash evaporation, first
Heat exchanger, the second heat exchanger and mainboard cooling circuit, double-stage compressor include low-voltage interface, middle crimping mouth and high voltage interface；It dodges
The steam (vapor) outlet for sending out device passes through tonifying Qi pipeline and middle pressure orifice；First Heat Exchanger is connected to by the first pipeline with flash evaporation,
First pipeline is equipped with first throttle valve；Second heat exchanger is connected to by the second pipeline with flash evaporation, and the second pipeline is equipped with the
Two throttle valves；Mainboard cooling circuit includes cooling entrance and coolant outlet, and cooling entrance is connected to the steam (vapor) outlet of flash evaporation, cold
But outlet and middle pressure orifice.
Therefore the present invention is cooled back by setting and structure design to air conditioner heat pump system by the way that mainboard is arranged
Road, and the cooling entrance of mainboard cooling circuit is connected to the lacquer export of flash evaporation, through coolant outlet and middle pressure orifice；This
Sample it is cooling good not only to have can guarantee mainboard, but also take into account using cooling down from the refrigerant vapour that flash evaporation is spread out of to mainboard
The thermal efficiency of air conditioner heat pump system, convenient for persistently using the cooling mainboard of refrigerant steam, make mainboard it is continual and steady be maintained at suitable
Temperature.
One Preferable scheme is that, cooling entrance is connected to by the first branch with the steam (vapor) outlet of flash evaporation, coolant outlet
Pass through second branch and middle pressure orifice；Tonifying Qi pipeline is in parallel with mainboard cooling circuit.
Therefore branch is separately provided for mainboard cooling circuit, be conducive to the tonifying Qi according to tonifying Qi air conditioner heat pump system
Demand and mainboard cooling requirement individually control the logical of tonifying Qi pipeline and mainboard cooling circuit and close and/or flow, are conducive to promote control
Flexibility processed.
Further embodiment is that the first branch or second branch are equipped with the first valve.
Therefore first valve setting convenient for being closed and/or flow according to cooling requirement to the logical of mainboard cooling circuit
It is controlled.
Further embodiment is that the first valve is solenoid valve.
Therefore solenoid valve is more cheap compared to for expansion valve common in air-conditioning system, and mainboard is cooling
The control in circuit is of less demanding, can satisfy requirement using the start-stop of solenoid valve control mainboard cooling circuit, and economical
Property is more preferable.
Another Preferable scheme is that, mainboard cooling circuit is connected with tonifying Qi pipeline.
Therefore mainboard cooling circuit is connected with tonifying Qi pipeline, so that air conditioner heat pump system of the invention is more succinct.
Another Preferable scheme is that, blowdown pipe road is equipped with the second valve.
Therefore second valve setting can according to the tonifying Qi demand of air conditioner heat pump system adjust tonifying Qi pipeline stream
It measures and/or leads to and close.
Further embodiment is that the second valve is solenoid valve.
Therefore solenoid valve is the same with the first valve to be set as, and closes energy using the second valve control the logical of tonifying Qi pipeline
Enough meet requirement, and use solenoid valve is more compared to economy for common expansion valve in use air conditioner heat pump system
It is good.
Further embodiment be further include reversal valve, reversal valve includes first interface, second interface, third interface and
Four interfaces, first interface are connected to high voltage interface, and second interface is connected to First Heat Exchanger, and third interface and the second heat exchanger connect
Logical, the 4th interface is connected to low-voltage interface；
Therefore reversal valve is added for air conditioner heat pump system, air conditioner heat pump system had been made both by the commutation function of reversal valve
It is able to achieve refrigerating function and is able to achieve heat-production functions again.
It further include the temperature sensor on mainboard, temperature sensor is electrically connected with the first valve.
Therefore air conditioner heat pump system of the invention can be adjusted according to the mainboard temperature information that temperature sensor is fed back
It saves the flow of the first valve or leads to the flow for closing or adjusting the second valve or lead to and close, then better ensure that mainboard is maintained at conjunction
It at a temperature of suitable, avoids mainboard temperature excessively high, the thermal efficiency of air conditioner heat pump system is also avoided largely to absorb heat because of mainboard cooling circuit
And it excessively reduces.
To solve the above-mentioned problems, the second object of the present invention is that providing one kind had both guaranteed the cooling good, temperature of mainboard
Stablize, and the air conditioner that the system thermal efficiency of avoiding is substantially reduced.
To achieve the goals above, air conditioner provided by the invention, including any one of aforementioned air conditioner heat pump system.
Therefore air conditioner of the invention due to use air conditioner heat pump system above-mentioned so that air conditioner of the invention
Not only it is cooling good to have can guarantee mainboard, but also the thermal efficiency of air conditioner heat pump system can be taken into account not due to mainboard cooling circuit largely absorbs heat
Excessively reduce, convenient for persistently using the cooling mainboard of refrigerant steam, make mainboard it is continual and steady be maintained at suitable temperature.
To achieve the goals above, air conditioner provided by the invention, including any one of aforementioned air conditioner heat pump system.
To solve the above-mentioned problems, the third object of the present invention is that providing one kind had both guaranteed the cooling good, temperature of mainboard
Stablize, and the air conditioner heat pump system control method that the system thermal efficiency of avoiding is substantially reduced.
Air conditioner heat pump system control method, using air conditioner heat pump system above-mentioned, preset first temperature value and second temperature
Value, the first temperature value are less than second temperature value；The temperature of mainboard is detected, mainboard temperature value is obtained, judges mainboard temperature value and the
The size relation of one temperature value；Judge the size relation of mainboard temperature value Yu second temperature value；If mainboard temperature value is not more than
First temperature value then closes the first valve；If mainboard temperature value between the first temperature value and second temperature value, keeps
The state of one valve；If mainboard temperature value is not less than second temperature value, the first valve is opened.
Therefore the first temperature value and second temperature value is respectively adopted as the logical temperature closed of the first valve of control
Reduced value, mainboard cooling circuit close the first valve when mainboard is cooled to no more than the first temperature value, stop cooling to mainboard
Refrigerant steam is connected in circuit, avoids refrigerant steam from continuing absorption mainboard heat and causes heat of the air conditioner heat pump system under cooling condition
Efficiency reduces；And the first valve is reopened again when mainboard temperature rises to not less than second temperature value, avoids frequently controlling
The folding of first valve.
One Preferable scheme is that, the first temperature value be range from 30 degrees Celsius to 35 degree Celsius in a temperature value,
Second temperature value be range from 35 degrees Celsius to 40 degree Celsius in a temperature value.
Therefore be conducive to mainboard temperature and remain in the first temperature value to the OK range of second temperature value,
The excessively high influence mainboard performance of mainboard temperature is avoided, the heat absorption of refrigerant excessive steam is also avoided to reduce air conditioner heat pump system in cooling condition
Under thermal efficiency.
Detailed description of the invention
Fig. 1 is the schematic diagram of air conditioner heat pump system embodiment one of the present invention；
Fig. 2 is the schematic diagram of air conditioner heat pump system embodiment two of the present invention；
Fig. 3 is the schematic diagram of air conditioner heat pump system embodiment three of the present invention；
Fig. 4 is the schematic diagram of air conditioner heat pump system example IV of the present invention；
Fig. 5 is the schematic diagram of air conditioner heat pump system embodiment five of the present invention.
Specific embodiment
Air conditioner heat pump system embodiment one:
Please refer to Fig. 1, air conditioner heat pump system, including double-stage compressor 1, reversal valve 2, flash evaporation 3, First Heat Exchanger 4, second change
Hot device 5, gas-liquid separator 6 and mainboard cooling circuit 7, double-stage compressor 1 include low-voltage interface, middle crimping mouth and high voltage interface；
Reversal valve 2 includes that first interface, second interface, third interface and the 4th interface, first interface are connected to high voltage interface, and the 4th connects
Mouth is connected to low-voltage interface；The steam (vapor) outlet of flash evaporation 3 passes through tonifying Qi pipeline 8 and middle pressure orifice；First Heat Exchanger 4 includes
First end and second end, first end are connected to second interface, and second end is connected to by the first pipeline 9 with flash evaporation 3, the first pipeline
9 are equipped with first throttle valve 11；Second heat exchanger 5 includes third end and the 4th end, third end and third orifice, the 4th end
It is connected to by the second pipeline 10 with flash evaporation 3, the second pipeline 10 is equipped with second throttle 12；The arrival end of gas-liquid separator 6
It is connected to the steam (vapor) outlet of the 4th orifice, gas-liquid separator 6 with low-voltage interface, mainboard cooling circuit 7 includes cooling entrance
And coolant outlet, cooling entrance are connected to the steam (vapor) outlet of flash evaporation 3, coolant outlet and middle pressure orifice.
Generally when temperature reaches 40 degrees Celsius, performance starts to be decreased obviously air-conditioning mainboard, when temperature is lower than 40 degrees Celsius
The variation of temperature influences less the performance of mainboard, therefore the temperature of air-conditioning mainboard is cooled to 40 degrees Celsius using refrigerant branch
It is to ensure that air conditioner heat pump system efficient operation below；Mainboard is carried out according to refrigerant liquid (refrigerant liquid) persistently cold
But, it be easy to cause refrigerant liquid to absorb the heat in a large amount of mainboards and mainboard ambient enviroment, causes to increase under cooling condition
The load for adding double-stage compressor 1 reduces the thermal efficiency of air conditioner heat pump system；Mainboard is cooled down according to refrigerant liquid intermittence,
Mainboard temperature can lead to mainboard performance inconsistency, and frequently the logical of control mainboard cooling circuit 7 closes with whether cooling down and fluctuating again
It is easy to cause valve damage.
Also, not only temperature is higher than refrigerant liquid, but also refrigerant density to refrigerant vapour (35 degrees centigrade)
Significantly lower than refrigerant liquid, refrigerant vapour is considerably slower than refrigerant liquid with the heat transfer rate of mainboard and its ambient enviroment,
If mainboard temperature can be made to be stably maintained at suitable range relatively, and (33 take the photograph for a long time using the cooling mainboard of refrigerant vapour
Family name's degree is between 38 degrees Celsius), and refrigerant vapour will not largely absorb the heat of external environment, to air conditioner heat pump system system
Thermal efficiency under cold operating condition influences smaller.
Therefore, the present embodiment is by setting mainboard cooling circuit 7, and by the cooling entrance and shwoot of mainboard cooling circuit 7
The steam (vapor) outlet of device 3 is connected to, by coolant outlet and middle pressure orifice；It thus can be using the refrigerant spread out of from flash evaporation 3
Steam cools down mainboard, it is cooling good not only to have can guarantee mainboard, but also take into account the thermal efficiency of air conditioner heat pump system, convenient for persistently adopting
With the cooling mainboard of refrigerant steam, make mainboard it is continual and steady be maintained at suitable temperature.
Preferably, air conditioner heat pump system further includes gas-liquid separator 6, gas-liquid separator 6 is set to the 4th interface and low pressure
In the communicating passage of interface, the arrival end of gas-liquid separator 6 and the 4th orifice, the steam (vapor) outlet of gas-liquid separator 6 with it is low
Press orifice.
Preferably, cooling entrance is connected to by the first branch 13 with the steam (vapor) outlet of flash evaporation 3, coolant outlet passes through the
Two branches 14 and middle pressure orifice；Tonifying Qi pipeline 8 is in parallel with mainboard cooling circuit 7.Branch is separately provided for mainboard cooling circuit 7
Road is conducive to individually control tonifying Qi pipeline 8 and mainboard according to the tonifying Qi demand and mainboard cooling requirement of tonifying Qi air conditioner heat pump system
The logical of cooling circuit 7 closes and/or flow, is conducive to promote control flexibility.
One in First Heat Exchanger 4 and the second heat exchanger 5 is indoor heat exchanger, another is outdoor heat exchanger；With
One heat exchanger 4 is indoor heat exchanger, and the second heat exchanger 5 is for outdoor heat exchanger；Under heating condition, high-temperature high-pressure refrigerant gas
Body (refrigerant) is discharged from the high voltage interface of double-stage compressor 1, enters the room heat exchanger and exchanges heat with water, refrigerant gas condensation
Heat release；Then refrigerant gas carries out level-one throttling by first throttle valve 11, becomes the gas-liquid two-phase of intermediate pressure after decompression
State, into flash evaporation 3.Part of refrigerant steam (temperature is generally in 35 degrees centigrades) in flash evaporation 3 is cold by mainboard
But the middle crimping mouth that circuit 7 enters double-stage compressor 1 carries out second-compressed, and another part refrigerant vapour in flash evaporation 3 is logical
The middle crimping mouth that overfill air pipe 8 enters double-stage compressor 1 carries out second-compressed；Refrigerant liquid in flash evaporation 3 passes through the
Two throttle valves 12 continue to throttle, and into outdoor heat exchanger, and absorb the heat in external environment, become low-temperature low-pressure refrigerant gas
Body returns to the low-voltage interface of double-stage compressor 1 after gas-liquid separator 6, compresses through double-stage compressor 1 again from Two-stage Compression
The high voltage interface of machine 1 is discharged, and moves in circles.
Under cooling condition, high-temperature high-pressure refrigerant gas is changed after the discharge of the high voltage interface of double-stage compressor 1 into outdoor
Hot device exchanges heat with air, and refrigerant gas condenses heat release；Then refrigerant gas carries out level-one by second throttle 12
Throttling, becomes the gas-liquid two-phase state of intermediate pressure, into flash evaporation 3 after decompression；Part of refrigerant steam warp in flash evaporation 3
The middle crimping mouth that mainboard cooling circuit 7 enters double-stage compressor 1 carries out second-compressed, another part refrigerant in flash evaporation 3
Steam carries out second-compressed by the middle crimping mouth that tonifying Qi pipeline 8 enters double-stage compressor 1；Refrigerant liquid is logical in flash evaporation 3
It crosses first throttle valve 11 to continue to throttle, enters the room heat exchanger, absorbing in outside cabin becomes low-temperature low-pressure refrigerant gas after heat
Body is returned in the low-voltage interface of double-stage compressor 1 finally by gas-liquid separator 6, is moved in circles；Using refrigeration under cooling condition
Agent steam carries out heat exchange cooling to mainboard, since refrigerant vapour self-temperature is compared in refrigerant liquid height and refrigerant vapour
Refrigerant is thin, therefore the heat exchange of refrigerant vapour and mainboard is more slow, will not excessive consumption mainboard heat, and refrigerant
The heat of vapor absorption mainboard ambient enviroment is few, therefore the thermal effect to be exchanged heat using refrigerant vapour and mainboard to air conditioner heat pump system
It can influence smaller.
The first branch 13 or second branch 14 are equipped with the first valve 15.The setting of first valve 15 is convenient for according to cooling need
It asks and the logical of mainboard cooling circuit 7 is closed and/or flow controls.
First valve 15 is solenoid valve.Solenoid valve is more cheap compared to for expansion valve common in air-conditioning system, and
And the control of mainboard cooling circuit 7 is of less demanding, can satisfy use using the start-stop of solenoid valve control mainboard cooling circuit 7 and wants
It asks, and economy is more preferable.
Preferably, tonifying Qi pipeline 8 is equipped with the second valve 16.The setting of second valve 16 can be according to air-conditioning heat pump system
The tonifying Qi demand of system adjusts the flow of tonifying Qi pipeline 8 and/or leads to and closes.Preferably, the second valve 16 is solenoid valve.With by the first valve
Door 15 is set as that solenoid valve is the same, can satisfy requirement using logical close of the second valve 16 control tonifying Qi pipeline 8, and using electricity
Magnet valve is more preferable compared to using economy for expansion valve common in air conditioner heat pump system.
Preferably, reversal valve 2 is four-way reversing valve.This air conditioner heat pump system needs reversal valve 2 to the height of double-stage compressor 1
Crimp mouth, the first end of First Heat Exchanger 4, the second heat exchanger 56 four direction of third end and gas-liquid separator refrigerant into
Row commutation processing, setting four-way reversing valve make the structure of air conditioner heat pump system simple, good economy performance.
Preferably, the air conditioner heat pump system of the present embodiment further includes the temperature sensor 17 on mainboard, temperature is passed
Sensor 17 is electrically connected with the first valve 15.The mainboard temperature that air conditioner heat pump system of the invention can be fed back according to temperature sensor 17
Degree information is closed to adjust the flow of the first valve 15 or lead to close or adjust the flow of the second valve 16 or lead to, and is then preferably protected
Mainboard is demonstrate,proved to keep at a suitable temperature, avoiding mainboard temperature excessively high, also avoiding the thermal efficiency of air conditioner heat pump system because mainboard is cold
But circuit 7 is largely absorbed heat and is excessively reduced.
Air conditioner heat pump system embodiment two:
Referring to figure 2., air conditioner heat pump system, including double-stage compressor 1, flash evaporation 3, First Heat Exchanger 4,5 and of the second heat exchanger
Mainboard cooling circuit 7, double-stage compressor 1 include low-voltage interface, middle crimping mouth and high voltage interface；The steam (vapor) outlet of flash evaporation 3 is logical
Overfill air pipe 8 and middle pressure orifice；First Heat Exchanger 4 includes first end and second end, and first end is connected to low-voltage interface,
Second end is connected to by the first pipeline 9 with flash evaporation 3, and the first pipeline 9 is equipped with first throttle valve 11；Second heat exchanger 5 includes
Third end and the 4th end, third end are connected to high voltage interface, and the 4th end is connected to by the second pipeline 10 with flash evaporation 3, the second pipe
Road 10 is equipped with second throttle 12；Mainboard cooling circuit 7 includes cooling entrance and coolant outlet, cooling entrance and flash evaporation 3
Steam (vapor) outlet connection, coolant outlet and middle pressure orifice.
High-temperature high-pressure refrigerant gas (refrigerant) is discharged from the high voltage interface of double-stage compressor 1, into the second heat exchanger 5 with
Water exchanges heat, and refrigerant gas condenses heat release；Then refrigerant gas carries out level-one throttling, decompression by first throttle valve 11
The gas-liquid two-phase state for becoming intermediate pressure afterwards, into flash evaporation 3.Part of refrigerant steam in flash evaporation 3 is cold by mainboard
But the middle crimping mouth that circuit 7 enters double-stage compressor 1 carries out second-compressed, and another part refrigerant vapour in flash evaporation 3 is logical
The middle crimping mouth that overfill air pipe 8 enters double-stage compressor 1 carries out second-compressed；Refrigerant liquid in flash evaporation 3 passes through the
Two throttle valves 12 continue to throttle, and into First Heat Exchanger 1, and absorb the heat in external environment, become low-temperature low-pressure refrigerant
Gas returns to the low-voltage interface of double-stage compressor 1, arranges again from the high voltage interface of double-stage compressor 1 through the compression of double-stage compressor 1
Out, it moves in circles.
The refrigerant of the air conditioner heat pump system of the present embodiment can only one-way flow, the second heat exchanger 5 can only heat, the first heat exchange
Device 4 can only freeze.
The rest part of air conditioner heat pump system embodiment two is the same as air conditioner heat pump system embodiment one.
Air conditioner heat pump system embodiment three:
Referring to figure 3., air conditioner heat pump system, including double-stage compressor 1, reversal valve 2, flash evaporation 3, First Heat Exchanger 4, second change
Hot device 5 and mainboard cooling circuit 7, double-stage compressor 1 include low-voltage interface, middle crimping mouth and high voltage interface；Reversal valve 2 includes the
One interface, second interface, third interface and the 4th interface, first interface are connected to high voltage interface, the 4th interface and low-voltage interface
Connection；The steam (vapor) outlet of flash evaporation 3 passes through tonifying Qi pipeline 8 and middle pressure orifice；First Heat Exchanger 4 includes first end and second
End, first end are connected to second interface, and second end is connected to by the first pipeline 9 with flash evaporation 3, and the first pipeline 9 is equipped with first
Throttle valve 11；Second heat exchanger 5 includes third end and the 4th end, and third end and third orifice, the 4th end pass through the second pipe
Road 10 is connected to flash evaporation 3, and the second pipeline 10 is equipped with second throttle 12；Mainboard cooling circuit 7 includes cooling entrance and cold
But it exports, cooling entrance is connected to the steam (vapor) outlet of flash evaporation 3, coolant outlet and middle pressure orifice.
One in First Heat Exchanger 4 and the second heat exchanger 5 is indoor heat exchanger, another is outdoor heat exchanger；With
One heat exchanger 4 is indoor heat exchanger, and the second heat exchanger 5 is for outdoor heat exchanger；Under heating condition, high-temperature high-pressure refrigerant gas
Body (cold media gas) is discharged from the high voltage interface of double-stage compressor 1, enters the room heat exchanger and exchanges heat with water, refrigerant gas
Condense heat release；Then refrigerant gas carries out level-one throttling by first throttle valve 11, becomes the gas-liquid of intermediate pressure after decompression
Two phases, into flash evaporation 3.Part of refrigerant steam in flash evaporation 3 enters double-stage compressor by mainboard cooling circuit 7
1 middle crimping mouth carries out second-compressed, and another part refrigerant vapour in flash evaporation 3 enters twin-stage pressure by tonifying Qi pipeline 8
The middle crimping mouth of contracting machine 1 carries out second-compressed；Refrigerant liquid in flash evaporation 3 continues to throttle by second throttle 12, into
Enter outdoor heat exchanger, and absorb the heat in external environment, become low-temperature low-pressure refrigerant gas, returns to double-stage compressor 1
Low-voltage interface is discharged again from the high voltage interface of double-stage compressor 1 through the compression of double-stage compressor 1, moves in circles.
Under cooling condition, high-temperature high-pressure refrigerant gas is changed after the discharge of the high voltage interface of double-stage compressor 1 into outdoor
Hot device exchanges heat with air, and refrigerant gas condenses heat release；Then refrigerant gas carries out level-one by second throttle 12
Throttling, becomes the gas-liquid two-phase state of intermediate pressure, into flash evaporation 3 after decompression；Part of refrigerant steam warp in flash evaporation 3
The middle crimping mouth that mainboard cooling circuit 7 enters double-stage compressor 1 carries out second-compressed, another part refrigerant in flash evaporation 3
Steam carries out second-compressed by the middle crimping mouth that tonifying Qi pipeline 8 enters double-stage compressor 1；Refrigerant liquid is logical in flash evaporation 3
It crosses first throttle valve 11 to continue to throttle, enters the room heat exchanger, absorbing in outside cabin becomes low-temperature low-pressure refrigerant gas after heat
Body in the low-voltage interface for eventually passing back to double-stage compressor 1, moves in circles.
The rest part of air conditioner heat pump system embodiment three is the same as air conditioner heat pump system embodiment one.
Air conditioner heat pump system example IV:
Referring to figure 4., air conditioner heat pump system, including double-stage compressor 1, flash evaporation 3, First Heat Exchanger 4, the second heat exchanger 5, gas
Liquid/gas separator 6 and mainboard cooling circuit 7, double-stage compressor 1 include low-voltage interface, middle crimping mouth and high voltage interface；Flash evaporation 3
Steam (vapor) outlet passes through tonifying Qi pipeline 8 and middle pressure orifice；First Heat Exchanger 4 include first end and second end, first end with it is low
Orifice is pressed, second end is connected to by the first pipeline 9 with flash evaporation 3, and the first pipeline 9 is equipped with first throttle valve 11；Second
Heat exchanger 5 includes third end and the 4th end, and third end is connected to high voltage interface, and the 4th end passes through the second pipeline 10 and flash evaporation 3
Connection, the second pipeline 10 are equipped with second throttle 12；Mainboard cooling circuit 7 includes cooling entrance and coolant outlet, and cooling enters
Mouth is connected to the steam (vapor) outlet of flash evaporation 3, coolant outlet and middle pressure orifice.
High-temperature high-pressure refrigerant gas (refrigerant) is discharged from the high voltage interface of double-stage compressor 1, into the second heat exchanger 5 with
Water exchanges heat, and refrigerant gas condenses heat release；Then refrigerant gas carries out level-one throttling, decompression by first throttle valve 11
The gas-liquid two-phase state for becoming intermediate pressure afterwards, into flash evaporation 3.Part of refrigerant steam in flash evaporation 3 is cold by mainboard
But the middle crimping mouth that circuit 7 enters double-stage compressor 1 carries out second-compressed, and another part refrigerant vapour in flash evaporation 3 is logical
The middle crimping mouth that overfill air pipe 8 enters double-stage compressor 1 carries out second-compressed；Refrigerant liquid in flash evaporation 3 passes through the
Two throttle valves 12 continue to throttle, and into First Heat Exchanger 4, and absorb the heat in external environment, become low-temperature low-pressure refrigerant
Gas returns to the low-voltage interface of double-stage compressor 1 by gas-liquid separator 6, compresses through double-stage compressor 1 again from double-stage compressor
1 high voltage interface discharge, moves in circles.
The First Heat Exchanger 4 of the air conditioner heat pump system of the present embodiment can only freeze, and the second heat exchanger 5 can only heat.
The rest part of air conditioner heat pump system example IV is the same as air conditioner heat pump system embodiment one.
Air conditioner heat pump system embodiment five:
Referring to figure 5., the air conditioner heat pump system of the present embodiment, mainboard cooling circuit 7 are connected with tonifying Qi pipeline 8.Mainboard cools back
Road 7 is connected with tonifying Qi pipeline 8, so that air conditioner heat pump system of the invention is more succinct.
One in First Heat Exchanger 4 and the second heat exchanger 5 is indoor heat exchanger, another is outdoor heat exchanger；With
One heat exchanger 4 is indoor heat exchanger, and the second heat exchanger 5 is for outdoor heat exchanger；Under heating condition, high-temperature high-pressure refrigerant gas
Body (cold media gas) is discharged from the high voltage interface of double-stage compressor 1, enters the room heat exchanger and exchanges heat with water, refrigerant gas
Condense heat release；Then refrigerant gas carries out level-one throttling by first throttle valve 11, becomes the gas-liquid of intermediate pressure after decompression
Two phases, into flash evaporation 3.Refrigerant vapour in flash evaporation 3 passes through mainboard cooling circuit 7 and tonifying Qi pipeline 8(tonifying Qi pipeline
8 connect with mainboard cooling circuit 7) mouth progress second-compressed is crimped into the middle of double-stage compressor 1；Refrigerant in flash evaporation 3
Liquid continues to throttle by second throttle 12, into outdoor heat exchanger, and absorbs the heat in external environment, it is low to become low temperature
Compression refrigerant gas returns to the low-voltage interface of double-stage compressor 1 after gas-liquid separator 6, again through the compression of double-stage compressor 1
It is discharged, moves in circles from the high voltage interface of double-stage compressor 1.
Under cooling condition, high-temperature high-pressure refrigerant gas is changed after the discharge of the high voltage interface of double-stage compressor 1 into outdoor
Hot device exchanges heat with air, and refrigerant gas condenses heat release；Then refrigerant gas carries out level-one by second throttle 12
Throttling, becomes the gas-liquid two-phase state of intermediate pressure, into flash evaporation 3 after decompression；Refrigerant vapour in flash evaporation 3 is cold through mainboard
But circuit 7 and tonifying Qi pipeline 8(tonifying Qi pipeline 8 are connected with mainboard cooling circuit 7) mouth progress is crimped into the middle of double-stage compressor 1
Second-compressed；Refrigerant liquid continues to throttle by first throttle valve 11 in flash evaporation 3, enters the room heat exchanger, absorbs external
Become low-temperature low-pressure refrigerant gas after indoor heat, the low-voltage interface of double-stage compressor 1 is returned to finally by gas-liquid separator 6
In, it moves in circles.
The rest part of air conditioner heat pump system embodiment five is the same as air conditioner heat pump system embodiment one.
Air conditioner embodiment:
Air conditioner, including air conditioner heat pump system above-mentioned.Air conditioner of the invention makes due to using air conditioner heat pump system above-mentioned
Obtaining air conditioner of the invention not only can guarantee that mainboard cooling was good, but also can take into account the thermal efficiency of air conditioner heat pump system not because mainboard is cold
But circuit is largely absorbed heat and is excessively reduced, convenient for persistently using the cooling mainboard of refrigerant steam, making mainboard is continual and steady to be maintained at
Suitable temperature.
Air conditioner heat pump system control method embodiment:
The air conditioner heat pump system control method of the present embodiment, using air conditioner heat pump system above-mentioned, preset first temperature value and
Two temperature values, the first temperature value are less than second temperature value；The temperature of mainboard is detected, mainboard temperature value is obtained, judges mainboard temperature
The size relation of value and the first temperature value；Judge the size relation of mainboard temperature value Yu second temperature value；If mainboard temperature value
No more than the first temperature value, then the first valve is closed；If mainboard temperature value between the first temperature value and second temperature value,
Keep the state of the first valve；If mainboard temperature value is not less than second temperature value, the first valve is opened.It has been respectively adopted
As the logical temperature comparisons' value closed of the first valve of control, mainboard cooling circuit is cooling by mainboard for one temperature value and second temperature value
To the first valve is closed when being not more than the first temperature value, stops that refrigerant steam is connected to mainboard cooling circuit, avoid refrigerant steam
Continue to absorb the thermal efficiency reduction that mainboard heat causes air conditioner heat pump system under cooling condition；And it is risen to not in mainboard temperature
The first valve is reopened again when lower than second temperature value, avoids frequently controlling the folding of the first valve.
Preferably, the first temperature value be range from 30 degrees Celsius to 35 degree Celsius in a temperature value, second temperature value
Be range from 35 degrees Celsius to 40 degree Celsius in a temperature value；In this way, being conducive to mainboard temperature remains at the first temperature
In angle value to the OK range of second temperature value, the excessively high influence mainboard performance of mainboard temperature is avoided, refrigerant excessive steam is also avoided
Heat absorption reduces thermal efficiency of the air conditioner heat pump system under cooling condition.
It is highly preferred that the first temperature value is 33 degrees Celsius, second temperature value is 38 degrees Celsius, and such mainboard temperature can be always
It is maintained between 33 degrees Celsius to 38 degrees Celsius；It cools down mainboard temperature in time before rising to 40 degrees Celsius, avoids mainboard temperature
Degree continues to increase；Also avoiding temperature refrigerant steam from continuing to heat absorption after mainboard temperature is lower than 33 degrees Celsius influences air-conditioning heat pump
Thermal efficiency of the system under cooling condition.
Finally it is emphasized that the above description is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is right
For those skilled in the art, the present invention can have various change and change, all within the spirits and principles of the present invention,
Any modification, equivalent substitution, improvement and etc. done, should all be included in the protection scope of the present invention.
Claims (12)
1. air conditioner heat pump system characterized by comprising
Double-stage compressor, the double-stage compressor include low-voltage interface, middle crimping mouth and high voltage interface；
The steam (vapor) outlet of flash evaporation, the flash evaporation passes through tonifying Qi pipeline and medium pressure orifice；
First Heat Exchanger, the First Heat Exchanger are connected to by the first pipeline with the flash evaporation, and first pipeline is equipped with
First throttle valve；
Second heat exchanger, second heat exchanger are connected to by the second pipeline with the flash evaporation, and second pipeline is equipped with
Second throttle；
Mainboard cooling circuit, the mainboard cooling circuit include cooling entrance and coolant outlet, the cooling entrance and the sudden strain of a muscle
Send out the steam (vapor) outlet connection of device, the coolant outlet and medium pressure orifice.
2. air conditioner heat pump system according to claim 1, it is characterised in that:
The cooling entrance is connected to by the first branch with the steam (vapor) outlet of the flash evaporation, and the coolant outlet passes through second
Road and medium pressure orifice；The tonifying Qi pipeline is in parallel with the mainboard cooling circuit.
3. air conditioner heat pump system according to claim 2, it is characterised in that:
The first branch or the second branch are equipped with the first valve.
4. air conditioner heat pump system according to claim 3, it is characterised in that:
First valve is solenoid valve.
5. air conditioner heat pump system according to claim 1, it is characterised in that:
The mainboard cooling circuit is connected with the tonifying Qi pipeline.
6. air conditioner heat pump system according to any one of claims 1 to 5, it is characterised in that:
The blowdown pipe road is equipped with the second valve.
7. air conditioner heat pump system according to claim 6, it is characterised in that:
Second valve is solenoid valve.
8. air conditioner heat pump system according to any one of claims 1 to 5, it is characterised in that:
The air conditioner heat pump system further includes reversal valve, and the reversal valve includes first interface, second interface, third interface and
Four interfaces, the first interface are connected to the high voltage interface, and the second interface is connected to the First Heat Exchanger, and described
Three interfaces are connected to second heat exchanger, and the 4th interface is connected to the low-voltage interface.
9. air conditioner heat pump system according to claim 3 or 4, it is characterised in that:
It further include the temperature sensor on mainboard, the temperature sensor is electrically connected with first valve.
10. air conditioner, it is characterised in that:
Including air conditioner heat pump system as described in any one of claim 1 to 9.
11. air conditioner heat pump system control method, using air conditioner heat pump system as claimed in claim 9, it is characterised in that:
Preset first temperature value and second temperature value, first temperature value are less than the second temperature value；
The temperature of mainboard is detected, mainboard temperature value is obtained, judges that the size of the mainboard temperature value and first temperature value is closed
System；Judge the size relation of the mainboard temperature value Yu the second temperature value；
If the mainboard temperature value is not more than first temperature value, the first valve is closed；
If the mainboard temperature value between first temperature value and the second temperature value, keeps the shape of the first valve
State；
If the mainboard temperature value is not less than the second temperature value, the first valve is opened.
12. air conditioner heat pump system control method according to claim 11, it is characterised in that:
First temperature value be range from 30 degrees Celsius to 35 degree Celsius in a temperature value, the second temperature value is model
A temperature value in enclosing from 35 degrees Celsius to 40 degree Celsius.
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| CN201811116065.7A CN108954885A (en) | 2018-09-25 | 2018-09-25 | Air conditioner, air conditioner heat pump system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811116065.7A CN108954885A (en) | 2018-09-25 | 2018-09-25 | Air conditioner, air conditioner heat pump system and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849018A (en) * | 2019-10-11 | 2020-02-28 | 珠海格力电器股份有限公司 | Heat pump air conditioning system, control method and air conditioner |
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| JP2011122779A (en) * | 2009-12-11 | 2011-06-23 | Toshiba Carrier Corp | Refrigerating cycle device |
| CN104640421A (en) * | 2013-11-25 | 2015-05-20 | 珠海格力电器股份有限公司 | Air conditioning unit |
| CN106766001A (en) * | 2017-02-04 | 2017-05-31 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioning, device and air-conditioning |
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