CN109114803A - A kind of control method of refrigerant flow of air-source heat-pump air heater and its system - Google Patents
A kind of control method of refrigerant flow of air-source heat-pump air heater and its system Download PDFInfo
- Publication number
- CN109114803A CN109114803A CN201811014227.6A CN201811014227A CN109114803A CN 109114803 A CN109114803 A CN 109114803A CN 201811014227 A CN201811014227 A CN 201811014227A CN 109114803 A CN109114803 A CN 109114803A
- Authority
- CN
- China
- Prior art keywords
- flash vessel
- liquid level
- superheat
- air
- degree
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
-
- 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
- F25B30/06—Heat pumps characterised by the source of low potential heat
Abstract
The embodiment of the present application discloses the control method of refrigerant flow of a kind of air-source heat-pump air heater and its system, and heat pump air-heater includes: compressor, multiple-way valve, flash vessel, outer heat exchanger, restricting element, at least two interior heat exchangers.Whether control method of refrigerant flow includes: to judge the liquid level of flash vessel within the scope of default liquid level, if not, then to tend to reach the refrigerant rate of influx of flash vessel described in the status adjustment of the default liquid level range, the liquid level for judging flash vessel is returned whether within the scope of default liquid level；Judge the return-air degree of superheat of the Heat Pump blower fan system whether within the scope of the default degree of superheat, if not, then to tend to reach the refrigerant discharge rate of flash vessel described in the status adjustment of the default degree of superheat range, the return-air degree of superheat for judging the Heat Pump blower fan system is returned whether within the scope of the default degree of superheat.It enables the system to obtain more efficient working condition on the basis of stable operation.
Description
Technical field
This application involves technical field of heat exchange more particularly to a kind of air-source heat-pump air heater and its refrigerant streams of system
Amount control method.
Background technique
Pollution that caused by coal burning produces tremendous influence to the formation of haze weather, in order to reduce winter pollution that caused by coal burning, improve sky
Makings amount, many cities of northern China start to promote " coal changes electricity " policy.With the implementation of policy, the air-conditioning equipment of coal-fired class by
Gradually it is eliminated, and air-source heat-pump air heater obtains the extensive favor in market since its cost of investment is low, flexible for installation.
Conventional one-to-one air-source heat-pump air heater product in the market, cold medium flux control too complex, Heat Pump
Blower is easy to produce concussion in use, leads to system unstability, meanwhile, the exploitation of heat pump air-heater is also restricted,
The one drag two air-source heat-pump air heater similar to one drag two air-conditioning suitable for multiple rooms can not be developed, so that multiple
Room is too high using the cost of heat pump air-heater.Therefore, how cold medium flux is effectively controlled, so that air source heat pump
Hot wind function efficiently, is reliably run, and is those skilled in the art's urgent problem to be solved.
Summary of the invention
The embodiment of the present application provides a kind of air-source heat-pump air heater and its control method, makes air-source heat-pump air heater
It can efficiently, reliably run.
In view of this, the application first aspect provides a kind of air-source heat-pump air heater, comprising: compressor, multiple-way valve,
Flash vessel, outer heat exchanger, restricting element, at least two interior heat exchangers.
The first of the multiple-way valve is logical to be connect with the exhaust outlet of compressor；The each interior heat exchanger with the multi-pass
The second of valve, which is led to, to be connect；The third of the multiple-way valve is logical to be connect with the first end of the outer heat exchanger；The 4th of the multiple-way valve
It is logical to be connect with the air entry of the compressor；
The restricting element is provided between first liquid port of the flash vessel and each interior heat exchanger；
The restricting element is provided between the second liquid mouth of the flash vessel and the second end of the outer heat exchanger；
The gas vent of the flash vessel is connect with the puff prot of the compressor；
It preferably, further include control unit；
Described control unit, for controlling the cold medium flux on each route of the air-source heat-pump air heater.
The application second aspect provides the control method of refrigerant flow of air-source heat-pump air heater system, comprising:
The liquid level of flash vessel is judged whether within the scope of default liquid level, if it is not, then to tend to reach the default liquid level model
Whether the refrigerant rate of influx of flash vessel described in the status adjustment enclosed returns to the liquid level for judging flash vessel in default liquid level model
In enclosing；
The return-air degree of superheat of the Heat Pump blower fan system is judged whether within the scope of the default degree of superheat, if it is not, then to become
The refrigerant discharge rate of the flash vessel described in the status adjustment for reaching the default degree of superheat range, return judge the Heat Pump
Whether the return-air degree of superheat of blower fan system is within the scope of the default degree of superheat.
Preferably, described if it is not, then to tend to reach the cold of flash vessel described in the status adjustment of the default liquid level range
Matchmaker's rate of influx, specifically includes:
If the liquid level of the flash vessel is higher than default highest liquid level, reduce the refrigerant rate of influx of the flash vessel；
If the liquid level of the flash vessel is lower than default minimum liquid level, increase the refrigerant rate of influx of the flash vessel.
Preferably, described if it is not, then to tend to reach flash vessel described in the status adjustment of the default degree of superheat range
Refrigerant discharge rate, specifically includes:
If the return-air degree of superheat is greater than the maximum value of the default degree of superheat range, increase the refrigerant of the flash vessel
Discharge rate；
If the return-air degree of superheat is less than the minimum value of the prefabricated degree of superheat range, reduce the refrigerant of the flash vessel
Discharge rate.
Preferably, described to return to whether the liquid level for judging flash vessel specifically includes within the scope of default liquid level:
The liquid level for judging flash vessel is returned after the first predetermined time period whether within the scope of default liquid level；
It is described to return to whether the return-air degree of superheat for judging the heat pump air-heater is being preset within the scope of the degree of superheat specifically
Include:
The return-air degree of superheat for judging the heat pump air-heater is returned after the second predetermined time period whether pre-
If within the scope of the degree of superheat；
Preferably, the heat pump air-heater includes at least two interior heat exchangers；
The method also includes:
According to the working condition of the interior heat exchanger, by the cold of branch road where the interior heat exchanger under off working state
Matchmaker's flow is closed to preset value.
Preferably, the method also includes:
According to the working condition of the interior heat exchanger, the mean temperature of the interior heat exchanger under calculating is in running order；
The difference of the temperature of interior heat exchanger and the mean temperature is greater than preset value if it exists, then to tend to be reach described flat
The status adjustment of equal temperature accordingly in branch where heat exchanger cold medium flux；
Preferably, the cold medium flux is adjusted by restricting element；
In the liquid level for judging flash vessel whether within the scope of default liquid level and the judgement Heat Pump blower fan system
Before whether the return-air degree of superheat is within the scope of the default degree of superheat further include:
According to environment temperature and system running frequency, the initial opening of the restricting element is set.
The application third aspect provides a kind of computer readable storage medium, and the computer readable storage medium is for depositing
Store up program code, cold medium flux controlling party of the said program code for air-source heat-pump air heater described in above-mentioned second aspect
Method.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
In the embodiment of the present application, a kind of control method of refrigerant flow of air-source heat-pump air heater is provided, it can will be empty
Flash vessel Liquid level in air supply heat pump air-heater system in the reasonable scope so that flash vessel work normally, it is ensured that main road
The stabilization of refrigerant circulation flow, the index at the same time it can also the return-air degree of superheat by system as main road refrigerant circulation flow,
In the reasonable scope by the flow control of main road refrigerant circulation, so that system can be obtained on the basis of stable operation it is higher
The working condition of effect
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of air-source heat-pump air heater in the embodiment of the present application；
Fig. 2 is a kind of structural schematic diagram of the flash vessel of air-source heat-pump air heater in the embodiment of the present application；
Fig. 3 is a kind of the first embodiment of the control method of refrigerant flow of air-source heat-pump air heater provided by the present application
Flow diagram；
Fig. 4 is a kind of second of embodiment of the control method of refrigerant flow of air-source heat-pump air heater provided by the present application
Flow diagram；
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this
Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.
Referring to Fig. 1, Fig. 1 is a kind of structural schematic diagram of air-source heat-pump air heater in the embodiment of the present application.
Air-source heat-pump air heater provided by the embodiment of the present application includes compressor 101, multiple-way valve 102, flash vessel
107, outer heat exchanger 109, restricting element, control device, at least two interior heat exchangers.
Multiple ports of multiple-way valve 102 are respectively at the exhaust outlet of compressor 101, the air entry of compressor 101, outer heat exchanger
109 first end, the connection of interior heat exchanger.Multiple-way valve 102 include at least can with two states so that heat pump air-heater refrigeration and
It can connect different channels under heating mode.Such as: when heat pump air-heater is in heating mode, the exhaust of compressor 101
Mouth is connect by multiple-way valve 102 with interior heat exchanger, so that the refrigerant being discharged from 101 exhaust outlet of compressor flows to interior heat exchanger,
Condensation heat release is carried out at interior heat exchanger, reaches heating effect.When heat pump air-heater is in refrigeration mode, the row of compressor 101
Port is connect by multiple-way valve 102 with the first end of outer heat exchanger 109, so that the refrigerant stream being discharged from 101 exhaust outlet of compressor
Outside heat exchanger 109, refrigerant carry out heat exchange cooling at outer heat exchanger 109, discharge heat, reach refrigeration effect in order to subsequent
Fruit.In order to improve the performance of system, compressor 101 can select frequency-changeable compressor, become specifically, can be the EVI with jet
Frequency compressor.Multiple-way valve is specifically as follows four-way valve, and six-way valve, eight ways valve etc. also can be used when needing to connect other function.
It please also refer to Fig. 1 and Fig. 2, Fig. 2 is a kind of flash vessel of air-source heat-pump air heater in the embodiment of the present application
Structural schematic diagram.
The equipment that flash vessel 107 can be achieved on gas-liquid separation is gathered around there are two liquid port and a gas port.Flash vessel
107 the first liquid port 1 is connect with interior heat exchanger, and throttling member is provided between each interior heat exchanger and flash vessel
Part；The second liquid mouth 2 of flash vessel 107 is connect with outer heat exchanger 109, at the same the second liquid mouth of outer heat exchanger and flash vessel it
Between be also equipped with restricting element.
The gas vent 3 of flash vessel 107 is connect with the puff prot of compressor 101, the gaseous coolant for will separate
Compressor 101 is sprayed into, the inspiratory capacity of compressor 101 is promoted, to improve the performance of compressor 101.
The quantity of interior heat exchanger can be two, be also possible to more, by taking two interior heat exchangers as an example:
Using the restricting element between flash vessel 107 and outer heat exchanger 109 as main road restricting element 108, to change in first
Restricting element between heat engine 103 and flash vessel 107 with heat exchanger 104 in second and is dodged as first branch restricting element 105
Restricting element between steaming device 107 is as second branch restricting element 106.
The refrigerant flow direction under two kinds of operating modes of Heat Pump blower is illustrated respectively below.
In a heating mode, refrigerant is flowed into from the first liquid port 1 of flash vessel 107, and second liquid mouth 2 flows out, at this time
Refrigerant flow direction should be: heat exchanger 103 (heat exchanger 104 in second) in exhaust outlet → multiple-way valve 102 → the first of compressor 101
→ first branch restricting element 105 (second branch restricting element 106) → 107 → main road of flash vessel restricting element 108 → changes outside
The air entry of 109 → multiple-way valve of heat engine, 102 → compressor 101；Bypass refrigerant is directly sprayed from the gas vent 3 of flash vessel 107
To the puff prot of compressor 101.
In cooling mode, refrigerant is flowed into from the second liquid mouth 2 of flash vessel 107, the outflow of the first liquid port 1, at this time
Refrigerant flow direction should be: exhaust outlet → multiple-way valve 102 of compressor 101 → 109 → main road of outer heat exchanger restricting element 108 → sudden strain of a muscle
(the heat exchange in second of heat exchanger 103 in 107 → first branch of steaming device restricting element 105 (second branch restricting element 106) → first
Machine 104) → 102 → compressor of multiple-way valve 101 air entry；Bypass refrigerant is directly injected to from the gas vent 3 of flash vessel 107
The puff prot of compressor 101.
It is understood that can be attached by part flow arrangement between above-mentioned two interior heat exchangers and multiple-way valve, together
When two branch restricting elements and flash vessel 107 between can also be attached by part flow arrangement, due to above-mentioned shunting fill
3 devices of connection are set, therefore can be three-way piece.Certainly, when the quantity of interior heat exchanger is 3,4 or more, corresponding branch road
It should also be as connecting corresponding branch restricting element, meanwhile, part flow arrangement is also possible to four parts, five-way piece etc..
The effect of restricting element is controlled the cold medium flux on channel, wherein passing through the liquid of control flash vessel 107
The flow of body inlet and outlet, and then the liquid level inside flash vessel 107 can be controlled.The Liquid level of flash vessel 107 is very
Important, the too high liquid refrigerants that may cause of liquid level is directly sprayed onto the puff prot of compressor 101, and Heat Pump blower fan system is caused to go out
It is now abnormal；The too low cold medium flux being easy to appear on channel of liquid level is unstable, apparent concussion occurs so as to cause system operation,
Therefore level monitoring device can be set on flash vessel 107.The device that liquid level can be monitored has very much, can be and specifically measures
Device of the depth of water, such as hydraulic pressure sensor, water level probe etc. are also possible to monitor the dress whether liquid level exceeds preset range
It sets.Level monitoring device used by flash vessel 107 in the present embodiment may include: that high level switch 4 and low liquid level switch
5, by two switch work in coordination, whether liquid level can be supervised between high level switch 4 and low liquid level switch 5
It surveys.When liquid level is excessively high, high level switch 5 is triggered, the restricting element connecting with the liquid inflow port of flash vessel 107 turns down, subtracts
The influx of few liquid；When liquid level is too low, low liquid level switch 4 can not be triggered, and connect with 107 liquid inflow port of flash vessel
Restricting element opens the influx for increasing liquid greatly.It is understood that when heat pump air-heater is respectively at two kinds of heating and refrigeration
When under state, refrigerant is different by the flow direction of flash vessel 107, when refrigerant is flowed into from the first liquid port 1, second liquid mouth 2
When outflow, then the first liquid port 1 is the liquid inflow port of flash vessel 107, and second liquid mouth 2 is that the liquid of flash vessel 107 flows out
Mouthful, i.e., the above-mentioned restricting element connecting with liquid inflow port is main road restricting element 108.On the contrary, working as refrigerant from second liquid mouth 2
It flows into, when the first liquid port 1 flows out, then second liquid mouth 2 is the liquid inflow port of flash vessel 107, and the first liquid port 1 is flash distillation
The liquid flowing outlet of device 107, i.e., the above-mentioned restricting element connecting with liquid inflow port are branch restricting element.It is understood that
It is that high level switch 4 and the position of low liquid level switch 5 can be configured according to actual needs, for example high level switch 4 can be with
The position of corresponding 70% liquid level of flash vessel 107 is set, and low liquid level switch 5 then can be set in corresponding 30% liquid of flash vessel 107
The position of position, it is of course also possible to which the other positions of flash vessel 107 are arranged in, details are not described herein.
Since the interior heat exchanger quantity of branch road is at least two, branch restricting element can also be opened by controlling it
It spends to guarantee that the refrigerant between the interior heat exchanger under each working condition balances.Meanwhile if it exists each interior heat exchanger difference when
The case where work, the branch restricting element that the interior heat exchanger under off working state is connected can be set as one it is fixed
Value flows into the interior heat exchanger under working condition in order to refrigerant.For example, being heated when restricting element is electric expansion valve
Under mode, the aperture for the branch restricting element that the interior heat exchanger under off working state is connected closes most 50P；In refrigeration mode
Under, the aperture for the branch restricting element that the interior heat exchanger under off working state is connected closes most 0P.
There are many restricting elements that can be realized above-mentioned function, such as solenoid valve, electric expansion valve etc., specifically, at this
In embodiment, main road restricting element 108, first branch restricting element 105, second branch restricting element 106 can be using electricity
Cold medium flux is adjusted in sub- expansion valve.
Heat pump air-heater provided by the present embodiment can also include control unit, for each to air-source heat-pump air heater
Cold medium flux on channel is controlled, and is specifically as follows by being controlled above-mentioned restricting element and is reached on each channel
The purpose that is controlled of cold medium flux.
Specific control method please refers to a kind of cold medium flux control of air-source heat-pump air heater provided herein
Method.
Heat pump air-heater provided by the embodiment of the present application includes flash vessel and throttling set, flash vessel can by gas-liquid into
Row separation, in order to promote the inspiratory capacity of compressor.Restricting element controls the liquid level of flash vessel, places flash vessel liquid level
System exception caused by too high or too low.Restricting element can also control the cold medium flux of a plurality of branch road simultaneously, so that work
Cold medium flux keeps balance between interior heat exchanger under state, and the refrigerant of the interior heat exchanger under off working state is adjusted to minimum shape
State flows to the interior heat exchanger under working condition in order to refrigerant.Therefore, a kind of air-source heat-pump air heater provided herein
Solve the problems, such as system fluctuation of service caused by cold medium flux is uncontrollable, reached make Heat Pump blower fan system efficiently, can
By the effect of operation.
Present invention also provides a kind of control method of refrigerant flow of air-source heat-pump air heater, referring to FIG. 3, Fig. 3 is
A kind of flow diagram of the first embodiment of the control method of refrigerant flow of air-source heat-pump air heater provided by the present application.
Include:
Step 301: judging the liquid level of flash vessel whether in default liquid level range, if it is not, then to tend to reach default liquid level
The refrigerant rate of influx of the state adjustment flash vessel of range returns to the liquid level for judging flash vessel whether within the scope of default liquid level.
It is understood that liquid refrigerants is easy to be higher by flash vessel gas vent when the liquid level of flash vessel is too high, cause
Liquid refrigerants is directly sprayed onto compressor puff prot, and system occurs abnormal；Liquid level is too low, and it is unstable to be easy to appear main road cold medium flux
It is fixed, cause system operation obvious concussion occur；Therefore firstly the need of judging its liquid level whether within a preset range.
It should be noted that the default liquid level range should be the reasonable range that flash vessel can work normally, due to
It is distinguished between the structure of different flash vessels, therefore the default liquid level range should be configured according to the actual situation.According to
This can be preset liquid level range is set as flash vessel highest liquid level 30% to 70% by research of this field to flash vessel liquid level
Between.
When the liquid level to flash vessel is not within the scope of default liquid level, the flow of flash vessel can be entered by adjusting refrigerant
To be adjusted to the liquid level of flash vessel, certainly, adjustment should will make the liquid level of flash vessel be intended to reach default model
In enclosing.After adjustment, liquid level adjusted is rejudged whether within the scope of default liquid level, if so, without adjusting refrigerant
The flash vessel flow of upstream end, if it is not, then continuing to adjust, until the liquid level of flash vessel is within the scope of default liquid level.
Step 302: the return-air degree of superheat of heat pump air-heater is judged whether within the scope of the default degree of superheat, if it is not, then to become
In the refrigerant discharge rate for the status adjustment flash vessel for reaching default degree of superheat range, the return-air mistake for judging heat pump air-heater is returned
Whether temperature is within the scope of the default degree of superheat.
The return-air degree of superheat is different according to the difference of Heat Pump blower operating mode, in a heating mode, it may be that compression
Difference between the suction temperature Th (temperature at air entry) and the coil temperature T3 of outer heat exchanger of machine muffler, in refrigeration mode
Under, then it should be between the suction temperature Th (temperature at air entry) of the compressor return air pipe and middle portion temperature T2 of interior heat exchanger
Difference, it should be appreciated that above-mentioned tri- temperature values of Th, T3 and T2 require to obtain by temperature measuring device measurement,
Specifically, temperature measuring device can be heat sensor, thermometer etc., function can be measured by the temperature that air-heater product carries
It is able to achieve, is also possible to the temperature measuring device actively installed additional as needed, anyway, for those skilled in the art
Speech, the return-air degree of superheat of system are easy to get, and details are not described herein.
It should be noted that the return-air degree of superheat be able to reflect main road refrigerant circulation flow whether the finger in OK range
Mark, main road refrigerant circulation flow is too many or can be embodied in the return-air degree of superheat very little.Main road refrigerant circulation flow is very little,
Then system exhaust temperature, suction temperature increase, and the return-air degree of superheat increases, and can reduce the cooling effect of compressor electric motor, cause to press
The electromechanical machine burning that contracts is ruined or service life decline；Main road refrigerant circulation flow is too many, and the return-air degree of superheat reduces, and is easy to appear compressor and returns
Liquid leads to compressor liquid hammer and damages, and system occurs abnormal；As it can be seen that using the return-air degree of superheat as judging main road refrigerant circulation stream
Whether amount is reasonable in the index of proper operation range.
Default degree of superheat range should can guarantee that system is normal or the range of efficient operation, in the range when,
Main road refrigerant circulation flow the most rationally can should make system be in best working condition.It in specific implementation, can be with
Preset a default degree of superheat first, for example, in a heating mode, the default degree of superheat be set as 2 DEG C, and set with it is preheated
Temperature difference is no more than 1 DEG C and belongs to the range that can receive, then presetting degree of superheat range is 1 DEG C~3 DEG C.In refrigeration mode
Under, the default degree of superheat is set as 4 DEG C, and set to differ with the preheating degree of superheat and belong to the range that can receive no more than 1 DEG C,
Then presetting degree of superheat range is 3 DEG C~5 DEG C.Certainly, other numbers can also be set as according to the actual situation by presetting degree of superheat range
Value.
If the return-air degree of superheat of system is judged not within the scope of the default degree of superheat, it may be considered that main road refrigerant circulation stream
Amount in the reasonable scope, at this time by adjusting the refrigerant discharge rate of flash vessel, is not equivalent to the cold medium flux directly to main road
It is adjusted, certainly, the return-air degree of superheat should be made to tend to fall into default degree of superheat range, return to this after adjustment
The judgement of step.
In above-mentioned two step, liquid rate of influx or discharge rate can by liquid flowing outlet with flash vessel or
The aperture of the restricting element that body inflow entrance is connected is adjusted.It is controlled especially by the restricting element of which position,
It can be flowed to and be determined according to refrigerant of the system provided by the embodiments of the present application under different working modes, in a upper embodiment
Detailed description has been carried out, details are not described herein again.
It should be understood that above-mentioned two step has sequencing in statement, but in practical methods implementation procedure, it is
Can without sequencing point, two steps can be while carry out, it is of course also possible to there is sequencing, always for
It, it is not related in timing between two steps.
In the first embodiment of method provided by the present application, level monitoring device can be set in flash vessel, thus
Whether within a preset range the liquid level information for obtaining flash vessel, may determine that the liquid level according to the liquid level information, if not pre-
If, then can be by adjusting the open amount for flowing into the restricting element that end is connect with flash vessel liquid, to change flash vessel in range
Liquid level, so that it is tended to fall into preset range, returned to after adjustment to liquid level whether judgement within a preset range；May be used also
Main road refrigerant circulation flow is regulated and controled as index using the return-air degree of superheat of system, judge system the return-air degree of superheat whether
Within the scope of the default degree of superheat, if the return-air degree of superheat not in default degree of superheat range, can by adjusting with flash vessel liquid
The open amount of the restricting element of outflow end connection, makes it to change the return-air degree of superheat to change the refrigerant circulation flow of main road
Tend to fall into default degree of superheat range；Since the liquid of flash vessel flows into the work that end and liquid outlet can be current according to system
Operation mode changes, and when system is in heating mode, it is the one end being connected with interior heat exchanger that liquid, which flows into end, adjusts at this time
The restricting element of flash vessel liquid level is branch restricting element, and liquid outlet is the one end being connected with outer heat exchanger, is adjusted at this time
The restricting element for saving main road cold medium flux is main road restricting element, and when system is in refrigeration mode, just dodged on the contrary, adjusting
The restricting element of steaming device liquid level is main road restricting element, and the restricting element for adjusting main road cold medium flux is branch restricting element.
It, can be by the flash vessel Liquid level in air-source heat-pump air heater system in zone of reasonableness by the above method
It is interior, so that flash vessel works normally, it is ensured that the stabilization of main road refrigerant circulation flow, at the same time it can also pass through the return-air mistake of system
Index of the temperature as main road refrigerant circulation flow, in the reasonable scope by the flow control of main road refrigerant circulation, so that being
System can obtain more efficient working condition on the basis of stable operation.
Referring to Fig. 4, Fig. 4 is the of a kind of control method of refrigerant flow of air-source heat-pump air heater provided by the present application
The flow diagram of two kinds of embodiments, this method comprises:
Step 401a: judge the liquid level of flash vessel whether within the scope of default liquid level.
Whether within a preset range to first determine whether the liquid level of flash vessel, it is to be understood that judge the side of flash vessel liquid level
Method has very much, for example, high level switch and low liquid is respectively set at the default highest liquid level of flash vessel and default minimum liquid level
Bit switch, when liquid level is higher than highest liquid level, then high level switch triggers；When liquid level is lower than minimum liquid level, then low liquid level is opened
It shuts down and only triggers.When detecting that high level switch triggering or low liquid level switch do not trigger, then it represents that the liquid level of flash vessel is not pre-
If in range.
Step 401b: if the liquid level of flash vessel is higher than default highest liquid level, reduce the refrigerant rate of influx of flash vessel；If
The liquid level of flash vessel is lower than default minimum liquid level, then increases the refrigerant rate of influx of flash vessel.
When flash vessel liquid level is higher than default highest liquid level, by reducing the liquid rate of influx of flash vessel, can reduce
Liquid level.The specific can be that flowing into the aperture for the restricting element that end is connect, with the liquid of flash vessel by turning down to reduce flash distillation
The liquid rate of influx of device, reduces liquid level.Equally, preset minimum liquid level when flash vessel liquid level is lower than, then it can be big by opening
The aperture for the restricting element connecting with flash vessel liquid outlet increases liquid level to increase the liquid rate of influx of flash vessel.
Meanwhile the amount once adjusted should not be excessive, to avoid system concussion, leads to fluctuation of service, therefore can be according to system pair
The adaptedness of cold medium flux adjustment sets the amount adjusted every time, for example, when restricting element is electric expansion valve, then every time
Open greatly or turn down 8P.
Return step 401a after the 401c: the first predetermined time period of step.
It is understood that there may be the situations that adjustment is excessive or adjustment is insufficient after being adjusted to liquid level, therefore also
Return step 401a is needed to be rejudged.However, refrigerant is not also stable if be frequently adjusted liquid level, then it is easy
Existing system concussion, leads to fluctuation of service.If judged immediately after primary adjustment simultaneously, judgement knot may cause
Fruit is also inaccurate.Therefore, it is necessary to reserve one end time, such as 40 seconds after each adjustment, after waiting refrigerant gradually stable again
Carry out judgment step.
If liquid level has reached preset range, however, to ensure that flash vessel energy stable operation, it is still desirable to every one section
Time is returned to judgment step and builds judgement again.
Step 402a: judge the return-air degree of superheat of Heat Pump blower fan system whether within the scope of the default degree of superheat.
The return-air degree of superheat of system can directly measure specific numerical value by temperature measuring device, therefore can be very intuitive
Judge the return-air degree of superheat whether within the scope of the default degree of superheat, if can also intuitively judge very much not in the default degree of superheat
When range, the return-air degree of superheat is specifically too big still too small.
Step 402b: if the return-air degree of superheat is greater than the maximum value of default degree of superheat range, increase the refrigerant stream of flash vessel
Rate out；If the return-air degree of superheat is less than the minimum value of prefabricated degree of superheat range, reduce the refrigerant discharge rate of flash vessel.
If the return-air degree of superheat is too big, beyond default degree of superheat range, then it can increase the refrigerant discharge rate of flash vessel, make
Main road refrigerant circulation flow increases, so that the suction temperature of system reduces, the decline of the return-air degree of superheat tends to fall into default overheat
Spend range.If the return-air degree of superheat is too small, lower than default degree of superheat range, then it can reduce the refrigerant discharge rate of flash vessel, make
Main road refrigerant circulation flow reduces, and the suction temperature of system increases, and the return-air degree of superheat increases, and tends to fall into default degree of superheat model
It encloses.Control refrigerant discharge rate can be the restricting element connecting with flash vessel liquid outlet.
In order to make the return-air degree of superheat of system fall into default degree of superheat range as early as possible, the size adjusted every time can be divided into
Multiple gradients, for example, enabling the default degree of superheat is SHy, and the practical degree of superheat is when using electric expansion valve as restricting element
SHs, presetting degree of superheat range is [SHy-1, SHy+1],
As SHs > SHy+3, the aperture for opening big electric expansion valve every time is (SHs-SHy) * 4P；
As SHs > SHy+1, the aperture for opening big electric expansion valve every time is 8P；
As SHy+1≤SHs≤SHy-1, keep the aperture of electric expansion valve constant；
As SHs < SHy-1, the aperture for turning down electric expansion valve every time is 8P；
As SHs < SHy-3, the aperture for turning down electric expansion valve every time is (SHy-SHs) * 4P.
Certainly, the knots modification of liquid discharge rate can be carried out according to the actual situation in the quantity of gradient and each gradient
Change.The step number that electric expansion valve is adjusted every time is calculated by formula, and deviation target value is remoter, and the step number adjusted every time is bigger, can
To reduce regulating time, run under stable state so that system is adjusted as early as possible.
Return step 402a after the 402c: the second predetermined time period of step.
It is understood that there may be the situations that adjustment is excessive or adjustment is insufficient after being adjusted to liquid level, therefore also
Return step 401a is needed to be rejudged.Equally, in order to avoid system is shaken and the accuracy of judgement, it should also after the adjustment
Reserved one end time, such as 40 seconds, return again to judgment step.
The above method can be applied in the heat pump air-heater of one-to-one, also can be used for dragging more heat pump air-heaters, i.e.,
The quantity of interior heat exchanger is at least 2.
When the quantity of interior heat exchanger is at least 2, method provided herein further include:
Step 403: according to the working condition of interior heat exchanger, by branch road where the interior heat exchanger under off working state
Cold medium flux close to preset value.
When there is multiple interior heat exchangers, if certain one or more interior heat exchanger will be without using that will correspond to interior heat exchanger branch
The cold medium flux of road is closed to preset value, for example, referring to FIG. 1, in the heat pump air-heater provided by the application first aspect,
If heat exchanger 103 is not necessarily to work in first, it is in off working state, heat exchanger 104 is in running order in second, then will be with the
The aperture for the first branch restricting element 105 that heat exchanger 103 connects in one is adjusted to a fixed value, such as under heating mode
It is 0P under refrigeration mode for 50P.
Step 404: according to the working condition of interior heat exchanger, the average temperature of the interior heat exchanger under calculating is in running order
Degree；The difference of the temperature and mean temperature of interior heat exchanger is greater than preset value if it exists, then to tend to the state for reaching mean temperature
Adjust the cold medium flux of branch where heat exchanger in corresponding；
It, then can be first to guarantee the refrigerant balance between the interior heat exchanger in more work when there is multiple interior heat exchangers
The mean temperature of the interior heat exchanger in each work is calculated, if the temperature of certain one or more interior heat exchanger is differed with mean temperature
More than preset value, then it represents that this interior heat exchanger is heat exchanger in deviation, needs to adjust cold medium flux.For example, exchanging heat when having in 4
Machine, heat exchanger in respectively first, heat exchanger in second, heat exchanger in heat exchanger and the 4th in third, when first, second and
Heat exchanger is under working condition in three, and when heat exchanger is under off working state in the 4th, then calculate the first, second He
The mean temperature of heat exchanger in third, if the difference of the temperature and mean temperature of heat exchanger is greater than 2 DEG C in third, corresponding tune
The aperture of the whole third restricting element being connect with heat exchanger in third, for example, when third restricting element is electric expansion valve, when
The temperature of heat exchanger adds 2 DEG C high than mean temperature in third or to subtract 2 than mean temperature degree Celsius low, then opens big or turn down every time
8P.Equally, frequently system caused by cold medium flux is adjusted to shake in order to prevent, a preset time period can also be set, for example, every 40
Second carries out Primary regulation to cold medium flux.
By the above method, can ensure that every interior heat exchanger has the suitable degree of superheat, in turn ensure interior heat exchanger it
Between steam that temperature is suitable, to ensure that the refrigerant balance between interior heat exchanger.
The above-mentioned refrigerant inflow velocity to flash vessel, the refrigerant rate of outflow, and the cold medium flux on each channel is carried out
It adjusts, the method that the embodiment of the present application uses is adjusted by restricting element, can also use throttle valve, control valve certainly
Deng other devices or equipment.
Therefore, when cold medium flux is adjusted by restricting element, before above-mentioned steps, can also include:
Step 400, according to environment temperature and system running frequency, the initial opening of restricting element is set.
Before system brings into operation, it is necessary first to which, according to environment temperature and system running frequency, the first of restricting element is set
Beginning open amount.
It should be noted that refrigerant also needs a period of time just to can enter the logical state of stationary flow after system brings into operation, because
This, preferably after system operation a period of time enters stable state, then carries out the judgement of step 401a, step 402a.
For example, the initial opening of restricting element is arranged according to environment temperature and system running frequency, when system runs 5 points
Zhong Hou enters step 401a；After system is run 3 minutes, 402a is entered step.
Second embodiment provided herein by liquid rate of influx to flash vessel and liquid discharge rate into
Row is adjusted, and is that flash vessel will not make the stability of system while playing its function to have adjusted the liquid level of flash vessel
At influence；The return-air degree of superheat for also assuring Heat Pump blower fan system simultaneously within a predetermined range, keeps system more efficient, more stable
Operation；In addition, method provided herein, which can also be applied to one, drags more heat pump air-heaters, so that exchanging heat in each
Machine can work independently, and in turn ensure the refrigerant balance between the interior heat exchanger in work.
The embodiment of the present application also provides a kind of computer readable storage medium, for storing program code, the program code
For executing appointing in a kind of control method of refrigerant flow of air-source heat-pump air heater system described in foregoing individual embodiments
It anticipates a kind of embodiment.
It is a kind of reality of the control method of refrigerant flow of air-source heat-pump air heater system provided herein below
Using please referring to Fig. 1.
One, heating mode:
1, refrigerant flows to
Refrigerant flows to when opening duplex running heating operation are as follows: exhaust outlet of compressor → four-way valve (four-way valve power down) → shunting
Threeway → interior heat exchanger A and interior heat exchanger B → throttle part PMV1A, PMV1B → flash vessel → throttle part PMV2 → outer heat exchange
Machine → four-way valve → compressor air suction mouth；It bypasses refrigerant and is directly injected to compressor puff prot from the gas vent of flash vessel；
Billing machine (opens interior heat exchanger A) when running, the corresponding throttle part of interior heat exchanger (interior heat exchanger B) that do not open
PMV1B is closed to 50P, and refrigerant is flowed through from interior heat exchanger A substantially, refrigerant flow direction are as follows: (four-way valve falls exhaust outlet of compressor → four-way valve
Electricity) → diversion three-way → interior heat exchanger A → throttle part PMV1A (PMV1B close to 50P) → flash vessel → throttle part PMV2 →
Outer heat exchanger → four-way valve → compressor air suction mouth；It bypasses refrigerant and is directly injected to compressor jet from the gas vent of flash vessel
Mouthful.
2, control method is as follows:
The refrigerant that 2.1 throttle part PMV1A (PMV1B) are used to control between the liquid level of flash vessel and two interior heat exchangers is flat
Weighing apparatus.
2 liquid-level switches of high-low position are set at 70% and 30% inside flash vessel, for detecting height of liquid level.According to
Environment temperature and the initial opening of running frequency setting PMV1A (PMV1B), system are run after five minutes according to the liquid level of flash vessel
Adjust its aperture:
As the liquid level > 70% of flash vessel, liquid level is excessively high, and throttle part PMV1A (PMV1B) is turned down, and adjusts within 40 seconds once,
8P is turned down every time；
When the liquid level of flash vessel is in 30%-70%, liquid level is normal, and PMV1A (PMV1B) is according to interior machine tube temperature T2A and T2B tune
The flow of heat exchanger in saving guarantees the refrigerant balance between two interior machines so that TZA and TZB temperature is close.
1. the throttle part PMV1 of corresponding interior machine is opened greatly when T2 > T2 is+2 DEG C average, primary, adjusting every time is adjusted within 40 seconds
8P；
2. maintaining the aperture of PMV1A (PMV1B) constant when T2 is averaged average+2 DEG C of -2 DEG C≤T2≤T2；
3. the PMV1 of corresponding interior machine is turned down when T2 < T2 is -2 DEG C average, adjusts once within 40 seconds, adjust 8P every time；
As the liquid level < 30% of flash vessel, liquid level is too low, and the throttle part PMV1 of corresponding interior machine is opened greatly, and 40S adjusts one
It is secondary, turn 8P down every time；
2.2 throttle part PMV2 are for controlling main road cold medium flux
It first opens according to environment temperature T4, singly or double opens up the initial opening for setting PMV2 and adjustable range is as follows:
Its aperture is adjusted according to the return-air degree of superheat (SH=Th-T3) after system operation 3 minutes.
When the practical degree of superheat is within the scope of target superheat degree, electric expansion valve is remained unchanged, when the practical degree of superheat is in mesh
When marking near degree of superheat range, big 8P is opened every time or turns down 8P, system is avoided to occur shaking and being difficult to stable operation；When practical mistake
When temperature deviates target superheat degree farther out, the step number that electric expansion valve is adjusted every time is calculated by preset formula, is deviateed target value and is got over
Far, the step number adjusted every time is bigger.
Two, refrigeration mode
1, refrigerant flows to
It opens refrigerant under two-shipper refrigerating operaton to flow to are as follows: exhaust outlet of compressor → four-way valve (four-way valve powers on) → outer heat exchanger
→ throttle part PMV2 → flash vessel → diversion three-way → throttle part PMV1A, PMV1B → interior heat exchanger A and interior heat exchanger B →
Four-way valve → compressor air suction mouth；It bypasses refrigerant and is directly injected to compressor puff prot from the gas vent of flash vessel；
Billing machine (opens interior machine A) when running, and the corresponding PMV1B of interior heat exchanger (interior heat exchanger B) not opened is closed to 0P, refrigerant
It is flowed through from interior heat exchanger A, refrigerant flow direction are as follows: exhaust outlet of compressor → four-way valve (four-way valve powers on) → outer machine heat exchanger → throttling
(PMV1B is shut to 0P) → interior heat exchanger A → four-way valve → compressor air suction component PMV2 → flash vessel → throttle part PMV1A
Mouthful；It bypasses refrigerant and is directly injected to compressor puff prot from the gas vent of flash vessel；
2, control method
2.1 throttle part PMV2 are used to control the liquid level of flash vessel
It is run according to environment temperature and the initial opening of running frequency setting PMV2, system after five minutes according to flash vessel
Liquid level adjusts its aperture:
As the liquid level > 70% of flash vessel, liquid level is excessively high, and throttle part PMV2 is turned down, and adjusts once within 40 seconds, turns down every time
8P；
When the liquid level of flash vessel is in 30%-70%, liquid level is normal, and throttle part PMV2 maintains existing aperture constant；
As the liquid level < 30% of flash vessel, liquid level is too low, and throttle part PMV2 is opened greatly, adjusts once within 40 seconds, opens every time big
8P；
2.2 throttle part PMV1A and PMV1B guarantee the refrigerant between two interior machines for controlling main road cold medium flux
Balance
First according to environment temperature and the initial opening of running frequency setting PMV1A and PMV1B, root after system is run 3 minutes
Its aperture is adjusted according to using the return-air degree of superheat (SHA=Th-TZA or SHB=Th-TZB):
When practical degree of superheat SHA=Th-TZA or SHB=Th-TZB is within the scope of target superheat degree, current aperture is kept
It is constant；When the practical degree of superheat is near target superheat degree range, opens big 8P every time or turn down 8P, avoid system occur shaking and
It is difficult to stable operation；When the practical degree of superheat deviates target superheat degree farther out, the step number that electric expansion valve is adjusted every time is by preset
Formula calculates, and deviation target value is remoter, and the step number adjusted every time is bigger.Adjust the return-air degree of superheat of two interior machines (A machine, B machine)
SHA=Th-TZA and SHB=Th-TZB reaches target value, not only can guarantee that every interior machine has the suitable degree of superheat, but also can guarantee two
Machine is corresponding in platform steams that temperature TZA, TZB is suitable, to ensure that the refrigerant balance between two interior machines.
The description of the present application and term " first " in above-mentioned attached drawing, " second ", " third ", " the 4th " etc. are (if deposited
) it is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that use in this way
Data are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
It should be appreciated that in this application, " at least one (item) " refers to one or more, and " multiple " refer to two or two
More than a."and/or" indicates may exist three kinds of relationships, for example, " A and/or B " for describing the incidence relation of affiliated partner
It can indicate: only exist A, only exist B and exist simultaneously tri- kinds of situations of A and B, wherein A, B can be odd number or plural number.Word
Symbol "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"." at least one of following (a) " or its similar expression, refers to
Any combination in these, any combination including individual event (a) or complex item (a).At least one of for example, in a, b or c
(a) can indicate: a, b, c, " a and b ", " a and c ", " b and c ", or " a and b and c ", and wherein a, b, c can be individually, can also
To be multiple.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (full name in English: Read-Only
Memory, english abbreviation: ROM), random access memory (full name in English: Random Access Memory, english abbreviation:
RAM), the various media that can store program code such as magnetic or disk.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of air-source heat-pump air heater characterized by comprising compressor, multiple-way valve, flash vessel, outer heat exchanger, throttling
Element, at least two interior heat exchangers；
The first of the multiple-way valve is logical to be connect with the exhaust outlet of compressor；The each interior heat exchanger with the multiple-way valve
Second leads to and connects；The third of the multiple-way valve is logical to be connect with the first end of the outer heat exchanger；The four-way of the multiple-way valve with
The air entry of the compressor connects；
The restricting element is provided between first liquid port of the flash vessel and each interior heat exchanger；
The restricting element is provided between the second liquid mouth of the flash vessel and the second end of the outer heat exchanger；
The gas vent of the flash vessel is connect with the puff prot of the compressor.
2. air-source heat-pump air heater according to claim 1, which is characterized in that further include control unit；
Described control unit, for controlling the cold medium flux on each route of the air-source heat-pump air heater.
3. a kind of control method of refrigerant flow of air-source heat-pump air heater system characterized by comprising
The liquid level of flash vessel is judged whether within the scope of default liquid level, if it is not, then to tend to reach the default liquid level range
Whether the refrigerant rate of influx of flash vessel described in status adjustment returns to the liquid level for judging flash vessel in default liquid level range
It is interior；
The return-air degree of superheat of the Heat Pump blower fan system is judged whether within the scope of the default degree of superheat, if it is not, then to tend to reach
The refrigerant discharge rate of flash vessel described in status adjustment to the default degree of superheat range, return judge the heat pump air-heater
Whether the return-air degree of superheat of system is within the scope of the default degree of superheat.
4. control method of refrigerant flow according to claim 3, which is characterized in that described if it is not, then to tend to reach institute
The refrigerant rate of influx for stating flash vessel described in the status adjustment of default liquid level range, specifically includes:
If the liquid level of the flash vessel is higher than default highest liquid level, reduce the refrigerant rate of influx of the flash vessel；
If the liquid level of the flash vessel is lower than default minimum liquid level, increase the refrigerant rate of influx of the flash vessel.
5. control method of refrigerant flow according to claim 3, which is characterized in that described if it is not, then to tend to reach institute
The refrigerant discharge rate for stating flash vessel described in the status adjustment of default degree of superheat range, specifically includes:
If the return-air degree of superheat is greater than the maximum value of the default degree of superheat range, increase the refrigerant outflow of the flash vessel
Rate；
If the return-air degree of superheat is less than the minimum value of the prefabricated degree of superheat range, reduce the refrigerant outflow of the flash vessel
Rate.
6. control method of refrigerant flow according to claim 3, which is characterized in that
It is described to return to whether the liquid level for judging flash vessel specifically includes within the scope of default liquid level:
The liquid level for judging flash vessel is returned after the first predetermined time period whether within the scope of default liquid level；
It is described to return to whether the return-air degree of superheat for judging the heat pump air-heater specifically includes within the scope of the default degree of superheat:
Return to whether the return-air degree of superheat for judging the heat pump air-heater was being preset after the second predetermined time period
In heating range.
7. control method of refrigerant flow according to claim 3, which is characterized in that the heat pump air-heater includes at least two
Heat exchanger in platform；
The method also includes:
Interior heat exchanger under off working state if it exists, then by branch where the interior heat exchanger under off working state
The cold medium flux of road is closed to preset value.
8. control method of refrigerant flow according to claim 7, which is characterized in that
The method also includes:
Calculate it is in running order under interior heat exchanger mean temperature；
The difference of running temperature and the mean temperature is greater than preset value if it exists, and exchanges heat in running order lower deviation
Machine, then with the cold medium flux of branch where tending to reach heat exchanger in deviation described in the status adjustment of the mean temperature.
9. according to the described in any item control method of refrigerant flow of claim 3 to 8, which is characterized in that the cold medium flux is logical
Restricting element is crossed to be adjusted；
Whether the return-air within the scope of liquid level with the judgement Heat Pump blower fan system is being preset in the liquid level for judging flash vessel
Before whether the degree of superheat is within the scope of the default degree of superheat further include:
According to environment temperature and system running frequency, the initial opening of the restricting element is set.
10. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium is for storing program generation
Code, said program code require the cold medium flux control of the described in any item air-source heat-pump air heaters of 3-9 for perform claim
Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811014227.6A CN109114803A (en) | 2018-08-31 | 2018-08-31 | A kind of control method of refrigerant flow of air-source heat-pump air heater and its system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811014227.6A CN109114803A (en) | 2018-08-31 | 2018-08-31 | A kind of control method of refrigerant flow of air-source heat-pump air heater and its system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109114803A true CN109114803A (en) | 2019-01-01 |
Family
ID=64861534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811014227.6A Pending CN109114803A (en) | 2018-08-31 | 2018-08-31 | A kind of control method of refrigerant flow of air-source heat-pump air heater and its system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109114803A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410984A (en) * | 2019-08-07 | 2019-11-05 | 宁波奥克斯电气股份有限公司 | The multi-joint interior machine valve self-adaptation control method of one kind and multi-gang air-conditioner |
| CN110940108A (en) * | 2019-12-12 | 2020-03-31 | 珠海格力电器股份有限公司 | Flash evaporation type enthalpy-increasing hot water unit and refrigerant storage and release control method thereof |
| CN112097424A (en) * | 2020-09-17 | 2020-12-18 | 珠海格力电器股份有限公司 | Refrigerating system, air supply control method and device and air conditioning equipment |
| CN113639485A (en) * | 2021-07-23 | 2021-11-12 | 青岛海尔空调电子有限公司 | Method and device for adjusting exhaust superheat degree of heat pump equipment and heat pump equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050043538A (en) * | 2003-11-06 | 2005-05-11 | 한국에너지기술연구원 | Tow-stage compression heat pump using controllable intermediate heat exchanger |
| CN103629873A (en) * | 2012-08-23 | 2014-03-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Control method of two-stage compression air conditioning system |
| CN106196787A (en) * | 2016-07-11 | 2016-12-07 | 珠海格力电器股份有限公司 | The control method of heat pump and heat pump |
| CN106440273A (en) * | 2016-09-29 | 2017-02-22 | 广东美的制冷设备有限公司 | Air conditioner system and control method thereof |
| CN107477798A (en) * | 2017-09-04 | 2017-12-15 | 广东美的暖通设备有限公司 | Method and apparatus, air-conditioning for the refrigerant that controls air-conditioning |
| CN107631525A (en) * | 2017-07-31 | 2018-01-26 | 珠海格力电器股份有限公司 | A kind of double-stage compressor air-conditioning system and its control method and device |
| CN107782019A (en) * | 2017-10-31 | 2018-03-09 | 海信（山东）空调有限公司 | The control method of flash vessel, air-conditioner system and air-conditioner system |
-
2018
- 2018-08-31 CN CN201811014227.6A patent/CN109114803A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050043538A (en) * | 2003-11-06 | 2005-05-11 | 한국에너지기술연구원 | Tow-stage compression heat pump using controllable intermediate heat exchanger |
| CN103629873A (en) * | 2012-08-23 | 2014-03-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Control method of two-stage compression air conditioning system |
| CN106196787A (en) * | 2016-07-11 | 2016-12-07 | 珠海格力电器股份有限公司 | The control method of heat pump and heat pump |
| CN106440273A (en) * | 2016-09-29 | 2017-02-22 | 广东美的制冷设备有限公司 | Air conditioner system and control method thereof |
| CN107631525A (en) * | 2017-07-31 | 2018-01-26 | 珠海格力电器股份有限公司 | A kind of double-stage compressor air-conditioning system and its control method and device |
| CN107477798A (en) * | 2017-09-04 | 2017-12-15 | 广东美的暖通设备有限公司 | Method and apparatus, air-conditioning for the refrigerant that controls air-conditioning |
| CN107782019A (en) * | 2017-10-31 | 2018-03-09 | 海信（山东）空调有限公司 | The control method of flash vessel, air-conditioner system and air-conditioner system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410984A (en) * | 2019-08-07 | 2019-11-05 | 宁波奥克斯电气股份有限公司 | The multi-joint interior machine valve self-adaptation control method of one kind and multi-gang air-conditioner |
| CN110940108A (en) * | 2019-12-12 | 2020-03-31 | 珠海格力电器股份有限公司 | Flash evaporation type enthalpy-increasing hot water unit and refrigerant storage and release control method thereof |
| CN112097424A (en) * | 2020-09-17 | 2020-12-18 | 珠海格力电器股份有限公司 | Refrigerating system, air supply control method and device and air conditioning equipment |
| CN112097424B (en) * | 2020-09-17 | 2024-03-19 | 珠海格力电器股份有限公司 | Refrigerating system, air supplementing control method and device and air conditioning equipment |
| CN113639485A (en) * | 2021-07-23 | 2021-11-12 | 青岛海尔空调电子有限公司 | Method and device for adjusting exhaust superheat degree of heat pump equipment and heat pump equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109114803A (en) | A kind of control method of refrigerant flow of air-source heat-pump air heater and its system | |
| CN108679789B (en) | Control method and device of air conditioning system | |
| CN100549561C (en) | Coolant system with water heating | |
| JP5597767B2 (en) | Heating device and method for controlling heating device | |
| CN103486692B (en) | The method of load self-adapting variable-frequency multi-connection type heat pump and control compressor frequency | |
| US11326805B2 (en) | Control method for air conditioning system | |
| CN110274361A (en) | The control method of water multi-gang air conditioner and its variable frequency pump | |
| CN108139107A (en) | Air-conditioning device and its method of operation | |
| CN110470011A (en) | Control method and device, air-conditioning for air-conditioner defrosting | |
| CN207470442U (en) | Injected compressor and its controller unit and oil spout vacuum pump and its controller unit | |
| CN108561980B (en) | Control method and device of air conditioning system | |
| CN107560207A (en) | Screw-type water chiller and its control method | |
| CN105588336B (en) | Water heater and its control method | |
| CN108548242B (en) | Control method and device of air conditioning system | |
| CN108548252B (en) | Control method and device of air conditioning system | |
| CN103644621A (en) | Central arithmetic type multi-split air conditioner system and state switching control method thereof | |
| CN105378392B (en) | Air-conditioning device | |
| CN105940272A (en) | Heat source device | |
| JP6663908B2 (en) | Fluid heating and / or cooling system and related methods | |
| CN110470006A (en) | Control method and device, air-conditioning for air-conditioner defrosting | |
| CN107917563A (en) | The control method and device of heat pump unit | |
| CN110470007A (en) | Control method and device, air-conditioning for air-conditioner defrosting | |
| CN108561981B (en) | Control method and device of air conditioning system | |
| CN108548294B (en) | Control method and device of air conditioning system | |
| CN114061024A (en) | Control method and control device for defrosting of air conditioning system, controller and air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190101 |
|
| RJ01 | Rejection of invention patent application after publication |