CN109724203A - Air conditioner and its control method - Google Patents
Air conditioner and its control method Download PDFInfo
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- CN109724203A CN109724203A CN201811640178.7A CN201811640178A CN109724203A CN 109724203 A CN109724203 A CN 109724203A CN 201811640178 A CN201811640178 A CN 201811640178A CN 109724203 A CN109724203 A CN 109724203A
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Abstract
The invention belongs to air conditioner technical fields, and in particular to a kind of air conditioner and its control method.Present invention seek to address that existing air conditioner lower problem of heat exchange efficiency under the environment of very high temperature or extremely low temperature.For this purpose, control method of the invention includes: acquisition outdoor environment temperature；Obtain the current coolant quantity in coolant circulating system；According to the current coolant quantity in outdoor environment temperature and coolant circulating system, total coolant quantity for being selectively adjusted in coolant circulating system.The present invention judges whether outdoor unit of the air conditioner is in the environment of supercooling or overheat by outdoor environment temperature, it can also judge whether total coolant quantity in coolant circulating system needs to be adjusted according to the current coolant quantity in coolant circulating system simultaneously, to targetedly adjust total coolant quantity in coolant circulating system, so that the coolant quantity in coolant circulating system can be adapted always with outdoor environment temperature, and then farthest improve the heat exchange efficiency of air conditioner.
Description
Technical field
The invention belongs to air conditioner technical fields, and in particular to a kind of air conditioner and its control method.
Background technique
With the continuous improvement of people's living standards, people also proposed increasingly higher demands to living environment.In order to
Comfortable environment temperature is maintained, air conditioner has become essential a kind of equipment in people's life.In recent years, although air-conditioning
Device technology has evolved to very mature stage, and still, existing air conditioner still remains some areas for improvement.Example
Such as, the coolant quantity in the coolant circulating system of existing air conditioner always is changeless which results in existing air conditioners
The lower problem of heat exchange efficiency under extremely cold or very hot environment.
Specifically, under different environmental working conditions, the optimal value of coolant quantity needed for coolant circulating system is often
Different.For example, generally requiring more refrigerant in coolant circulating system when ambient temperature is too low, steamed to improve
Temperature is sent out, to achieve the effect that alleviate frost, improve heating capacity；Meanwhile when ambient temperature is excessively high, refrigerant is followed
More refrigerant is often also required in loop system, to reduce delivery temperature, to achieve the effect that improve refrigerating capacity；And when outer
When portion's environment temperature is more suitable for, the coolant quantity in coolant circulating system is again unsuitable excessive, in order to avoid led because system pressure increases
The problem of causing compressor work to increase.
Correspondingly, this field needs a kind of new air conditioner and its control method to solve the above problems.
Summary of the invention
In order to solve the above problem in the prior art, in order to solve existing air conditioner in the ring of very high temperature or extremely low temperature
The lower problem of heat exchange efficiency under border, the present invention provides a kind of control method for air conditioner, the air conditioner includes
Coolant circulating system, the control method include: acquisition outdoor environment temperature；It obtains current cold in the coolant circulating system
Matchmaker's amount；According to the current coolant quantity in the outdoor environment temperature and the coolant circulating system, it is selectively adjusted described cold
Total coolant quantity in matchmaker's circulatory system.
In the optimal technical scheme of the above-mentioned control method for air conditioner, " according to the outdoor environment temperature and institute
The current coolant quantity in coolant circulating system is stated, the total coolant quantity being selectively adjusted in the coolant circulating system " the step of
Specifically include: according to the outdoor environment temperature determine the coolant circulating system needed for coolant quantity；The refrigerant is followed
Coolant quantity needed for loop system is compared with the current coolant quantity in the coolant circulating system；According to the refrigerant circulation
The comparison result of coolant quantity needed for system and the current coolant quantity in the coolant circulating system is selectively adjusted described
Total coolant quantity in coolant circulating system.
In the optimal technical scheme of the above-mentioned control method for air conditioner, " according to institute in the coolant circulating system
The comparison result of the current coolant quantity in coolant quantity and the coolant circulating system needed, is selectively adjusted the refrigerant circulation
The step of total coolant quantity in system ", specifically includes: if coolant quantity needed for the coolant circulating system is not equal to described
Current coolant quantity in coolant circulating system then adjusts total coolant quantity in the coolant circulating system.
In the optimal technical scheme of the above-mentioned control method for air conditioner, " if institute in the coolant circulating system
The coolant quantity needed is then adjusted total cold in the coolant circulating system not equal to the current coolant quantity in the coolant circulating system
The step of matchmaker's amount ", specifically includes: if coolant quantity needed for the coolant circulating system is greater than in the coolant circulating system
Current coolant quantity, then convey refrigerant into the coolant circulating system.
In the optimal technical scheme of the above-mentioned control method for air conditioner, " if institute in the coolant circulating system
The coolant quantity needed is then adjusted total cold in the coolant circulating system not equal to the current coolant quantity in the coolant circulating system
The step of matchmaker's amount ", specifically includes: if coolant quantity needed for the coolant circulating system is less than in the coolant circulating system
Current coolant quantity, then by refrigerant recovering in the coolant circulating system.
In the optimal technical scheme of the above-mentioned control method for air conditioner, " according to institute in the coolant circulating system
The comparison result of the current coolant quantity in coolant quantity and the coolant circulating system needed, is selectively adjusted the refrigerant circulation
The step of total coolant quantity in system ", specifically includes: if coolant quantity needed for the coolant circulating system is equal to described cold
Current coolant quantity in matchmaker's circulatory system does not adjust total coolant quantity in the coolant circulating system then.
In the optimal technical scheme of the above-mentioned control method for air conditioner, " determined according to the outdoor environment temperature
The step of coolant quantity needed for the coolant circulating system ", specifically includes: judging temperature locating for the outdoor environment temperature
Range；According to temperature range locating for the outdoor environment temperature, coolant quantity needed for the coolant circulating system is determined.
The present invention also provides a kind of air conditioner, the air conditioner include indoor heat exchanger, outdoor heat exchanger, compressor,
Electric expansion valve and four-way valve, the outdoor heat exchanger, the compressor, the indoor heat exchanger and the electric expansion valve structure
At the coolant circulating system of closed loop, the four-way valve can commutate so that the air conditioner is in cooling condition or heating condition,
The air conditioner further includes the liquid storage branch being connected with the coolant circulating system, and the liquid storage branch is configured to described
Refrigerant is conveyed in coolant circulating system and by the refrigerant recovering in the coolant circulating system.
In the optimal technical scheme of above-mentioned air conditioner, the liquid storage branch road is provided with liquid storage component, the first control valve
With the second control valve, first control valve and second control valve are separately positioned on the liquid feeding side of the liquid storage component and go out
Liquid side.
In the optimal technical scheme of above-mentioned air conditioner, the liquid storage branch road is additionally provided with first flowmeter and second
Meter, the first flowmeter and the second flowmeter are separately positioned on the liquid feeding side and tapping side of the liquid storage component.
It will be appreciated to those of skill in the art that in the inventive solutions, air conditioner of the invention includes cold
Matchmaker's circulatory system, control method of the invention include: acquisition outdoor environment temperature；It obtains current in the coolant circulating system
Coolant quantity；According to the current coolant quantity in the outdoor environment temperature and the coolant circulating system, it is selectively adjusted described
Total coolant quantity in coolant circulating system.Control method of the invention judges the air conditioner by the outdoor environment temperature
Outdoor unit whether be in the environment of supercooling or overheat, meanwhile, the control method can also be according to the refrigerant circulation system
Whether the current coolant quantity in system needs to be adjusted come the total coolant quantity judged in the coolant circulating system, to be directed to
Total coolant quantity in the coolant circulating system is adjusted, property so that the coolant quantity in the coolant circulating system always can be with
Outdoor environment temperature is adapted, and then farthest improves the heat exchange efficiency of the air conditioner, so that user experience is had
Effect is promoted.
Further, in the preferred technical solution of the present invention, the air conditioner can be according to the outdoor environment temperature
Determine coolant quantity needed for the coolant circulating system, i.e., with the most matched coolant quantity of the outdoor environment temperature；Then, will
Coolant quantity needed for the coolant circulating system is compared with the current coolant quantity in the coolant circulating system, to have
Effect judges whether total coolant quantity in the coolant circulating system needs to be adjusted；Finally, according to comparison result come selectivity
Ground adjusts total coolant quantity in the coolant circulating system, follows so that the air conditioner can targetedly adjust the refrigerant
Total coolant quantity in loop system, so that the coolant quantity in the coolant circulating system can mutually fit always with outdoor environment temperature
It answers, and then farthest improves the heat exchange efficiency of the air conditioner.
Further, in the preferred technical solution of the present invention, if coolant quantity needed for the coolant circulating system
Greater than the current coolant quantity in the coolant circulating system, then it is too low or warm to illustrate that the outdoor unit of the air conditioner is in temperature
It spends in high environment；At this point, refrigerant should be conveyed into the coolant circulating system, to effectively improve the air conditioner
Heating capacity or refrigerating capacity, and then the heat exchange efficiency of the air conditioner is effectively improved, so that the air conditioner can quickly meet use
Family demand.
Further, in the preferred technical solution of the present invention, if coolant quantity needed for the coolant circulating system
Less than the current coolant quantity in the coolant circulating system, then explanation is under current working environment, the coolant circulating system
In coolant quantity already exceed coolant quantity needed for the coolant circulating system；At this point, the pressure in the coolant circulating system
Power is excessively high, and the compressor needs to consume many energy and carrys out compression refrigerant, in consideration of it, should will be in the coolant circulating system
Refrigerant recovering to reduce the pressure in the coolant circulating system, and then effectively improves the heat exchange efficiency of the air conditioner.
Further, in the preferred technical solution of the present invention, if coolant quantity needed for the coolant circulating system
Equal to the current coolant quantity in the coolant circulating system, then illustrate current coolant quantity in the coolant circulating system just with
Coolant quantity needed for the coolant circulating system matches；At this point, the air conditioner has had sufficiently high heat exchange efficiency,
The air conditioner does not need to adjust total coolant quantity in the coolant circulating system.
Further, in the preferred technical solution of the present invention, the air conditioner can be according to the outdoor environment temperature
Locating temperature range determines coolant quantity needed for the coolant circulating system；It is understood that outdoor environment temperature
Fuctuation within a narrow range can be generated with the change of time, if each temperature value corresponds to a different coolant quantity, will lead to
The air conditioner just needs repeatedly to adjust the coolant quantity in the coolant circulating system interior on the same day, in order to avoid unnecessary
Operation is adjusted, needed for the present invention is determined by temperature range locating for the outdoor environment temperature in the coolant circulating system
Coolant quantity, so as to while guaranteeing that the air conditioner has higher heat exchange efficiency, additionally it is possible to reduce the air conditioner to the greatest extent
Adjusting number.
In addition, those skilled in the art are also understood that, and in the inventive solutions, air conditioner of the invention
By the way that the liquid storage branch is arranged, so as to the liquid storage branch can be conveyed at any time into the coolant circulating system refrigerant and
By the refrigerant recovering in the coolant circulating system, so that the coolant quantity being effectively ensured in the coolant circulating system always can
It is adapted with outdoor environment temperature, and then farthest improves the heat exchange efficiency of the air conditioner.
Further, in the preferred technical solution of the present invention, air conditioner of the invention passes through in the liquid storage component
First control valve and second control valve is respectively set to control the mobility status of refrigerant in liquid feeding side and tapping side, so as to
Refrigerant can be conveyed into the coolant circulating system at any time and will be in the coolant circulating system by guaranteeing the liquid storage branch
Refrigerant recovering.In addition, also institute is respectively set by the liquid feeding side and tapping side in the liquid storage component in air conditioner of the invention
First flowmeter and the second flowmeter are stated to calculate the flowing velocity of refrigerant, to calculate the amount of flow of refrigerant, Jin Eryou
Effect controls the output quantity and yield of the liquid storage branch.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of liquid storage branch of the invention when conveying refrigerant；
Fig. 2 is the structural schematic diagram of liquid storage branch of the invention when recycling refrigerant；
Fig. 3 is the key step flow chart of control method of the invention；
Fig. 4 is the specific steps flow chart of the preferred embodiment of control method of the invention.
Appended drawing reference:
1, indoor heat exchanger；2, outdoor heat exchanger；3, compressor；4, electric expansion valve；5, four-way valve；
6, liquid storage component；7, the first control valve；8, the second control valve；9, first flowmeter；10, second flowmeter；11, single
To valve；12, throttle ele-ment.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining technical principle of the invention, it is not intended that limit the scope of the invention.For example, although
Describe each step of method of the invention in the application according to particular order, but these be not sequentially it is restrictive,
Under the premise of without departing from basic principle of the invention, those skilled in the art can execute the step in a different order
Suddenly.
It should be noted that in the description of the present invention unless specifically defined or limited otherwise, term " connected " and
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
It is connected directly, the connection inside two elements can also be can be indirectly connected through an intermediary.For those skilled in the art
For member, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.In addition, term " first ", " second "
It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Referring initially to Fig. 1 and Fig. 2, wherein Fig. 1 is the structural schematic diagram of liquid storage branch of the invention when conveying refrigerant；
Fig. 2 is the structural schematic diagram of liquid storage branch of the invention when recycling refrigerant.As shown in figs. 1 and 2, in this preferred embodiment
In, the air conditioner includes indoor heat exchanger 1, outdoor heat exchanger 2, compressor 3, electric expansion valve 4 and four-way valve 5, and interior is changed
Hot device 1, outdoor heat exchanger 2, compressor 3 and electric expansion valve 4 constitute the coolant circulating system of closed loop, and four-way valve 5 can commutate
So that the air conditioner is in cooling condition or heating condition.It will be appreciated to those of skill in the art that the present invention is not to institute
The specific structure for stating coolant circulating system imposes any restrictions, and technical staff can be cold according to actual use demand sets itself
The specific structure of matchmaker's circulatory system, as long as the air conditioner can realize the function of refrigeration and heating by the coolant circulating system
Energy.In addition, the air conditioner further includes controller and outdoor temperature sensor, the outdoor temperature sensor can be measured
Outdoor environment temperature, the controller can obtain the measurement data of the outdoor temperature sensor, and the controller is also
The operation of the air conditioner can be controlled.It should also be noted that, the present invention is not to the specific structure and model of the controller
It imposes any restrictions, and the controller can be the original controller of the air conditioner, is also possible to of the invention to execute
The controller that control method is separately provided.
Further, the air conditioner further includes the liquid storage branch being connected with the coolant circulating system, and the storage
The both ends of liquid branch are respectively connected to the liquid feeding side of compressor 3, and the liquid storage branch is configured to the refrigerant circulation system
Refrigerant is conveyed in system and by the refrigerant recovering in the coolant circulating system.It should be noted that technical staff can basis
The specific structure of liquid storage branch described in actual use demand self-setting and the liquid storage branch and the coolant circulating system
Connection relationship, as long as the liquid storage branch can convey refrigerant into the coolant circulating system and by the refrigerant circulation
Refrigerant recovering in system.In the preferred embodiment, the liquid storage branch road is provided with the control of liquid storage component 6, first
Valve 7 and the second control valve 8, wherein the liquid feeding side of liquid storage component 6 is arranged in the first control valve 7, and the setting of the second control valve 8 is being stored up
The tapping side of liquid component 6.Preferably, liquid storage component 6 is fluid reservoir, and certainly, this description is not restrictive, technical staff
The specific structure and size of liquid storage component 6 can also be voluntarily selected according to actual use demand.In the operation of the air conditioner
Cheng Zhong, if the first control valve 7 is closed, the second control valve 8 is opened, as shown in Figure 1, the refrigerant stored in liquid storage component 6 will
It is transported in the coolant circulating system；If the first control valve 7 is opened, the second control valve 8 is closed, as shown in Fig. 2, described
Refrigerant in coolant circulating system will be recovered in liquid storage component 6.It should be noted that this setup is only a kind of
Preferred arrangement, technical staff can also be according to the specific structures for actually using liquid storage branch described in demand sets itself.This
Outside, it will be appreciated to those of skill in the art that preferably, the first control valve 7 and the second control valve 8 are solenoid valve, and the
One control valve 7 and the second control valve 8 are connected with the controller, so that the controller can control 7 He of the first control valve
The on-off of second control valve 8.
Further, in the preferred embodiment, the liquid feeding side of liquid storage component 6 is additionally provided with first flowmeter 9 and list
To valve 11, referring to Fig.2, in the case where the first control valve 7 opens the closing of the second control valve 8, in the coolant circulating system
Refrigerant will be recovered in liquid storage component 6；At this point, first flowmeter 9 is able to detect the yield of refrigerant, meanwhile, the control
Device processed can obtain the measurement data of first flowmeter 9, and check valve 11 has orientation conducting effect, to guarantee refrigerant only
It can flow into liquid storage component 6 from the coolant circulating system, go back without being flow backwards from liquid storage component 6.It should be noted that
The present invention not position between the concrete model to first flowmeter 9 and check valve 11 and first flowmeter 9 and check valve 11
Relationship imposes any restrictions, as long as first flowmeter 9 is able to detect the yield of refrigerant, check valve 11 can limit the flowing of refrigerant
Direction.Meanwhile the tapping side of liquid storage component 6 is additionally provided with second flowmeter 10 and throttle ele-ment 12, refering to fig. 1,
One control valve 7 is closed, and in the case that the second control valve 8 is opened, the refrigerant stored in liquid storage component 6 will be transported to described cold
In matchmaker's circulatory system；At this point, second flowmeter 10 is able to detect the conveying capacity of refrigerant, meanwhile, the controller can obtain
The measurement data of two flowmeters 10, and throttle ele-ment 12 can play the role of reducing pressure by regulating flow, to guarantee liquid refrigerants energy
Enough quickly volatilizations are gaseous coolant, and then compressor 3 is avoided to lead to the problem of liquid hammer.Preferably, throttle ele-ment 12 is capillary, when
So, technical staff can also voluntarily select the concrete type of throttle ele-ment 12 according to actual use demand.In addition it is also necessary to illustrate
, the present invention not concrete type to second flowmeter 10 and throttle ele-ment 12 and second flowmeter 10 and throttle ele-ment 12
Between positional relationship impose any restrictions, as long as second flowmeter 10 is able to detect the conveying capacity of refrigerant, throttle ele-ment 12 can
Auxiliary liquid refrigerants rapid evaporation is gaseous coolant.
Referring next to Fig. 3, which is the key step flow chart of control method of the invention.As shown in figure 3, based on above-mentioned
Air conditioner as described in the examples, control method of the invention mainly include the following steps:
S1: outdoor environment temperature is obtained；
S2: the current coolant quantity in the coolant circulating system is obtained；
S3: it according to the current coolant quantity in the outdoor environment temperature and the coolant circulating system, is selectively adjusted
Total coolant quantity in the coolant circulating system.
Further, in step sl, the controller can obtain the outdoor by the outdoor temperature sensor
Environment temperature；It should be noted that the mode that the present invention does not obtain the outdoor environment temperature to the controller makees any limit
System, the controller both can obtain outdoor environment temperature by the temperature sensor that the air conditioner itself is arranged, can also
Obtain outdoor environment temperature beyond the clouds in a manner of through networking.Then, in step s 2, the controller can obtain described
Current coolant quantity in coolant circulating system；Normally, the current coolant quantity is all that the controller is followed by the refrigerant
The coolant quantity of initial coolant quantity and the discrepancy coolant circulating system in loop system is calculated, certainly, this acquisition side
Formula be not it is restrictive, technical staff can sets itself acquisition modes according to the actual situation, as long as the controller can
Get the current coolant quantity in the coolant circulating system.
Further, in step s3, the controller can be followed according to the outdoor environment temperature and the refrigerant
Current coolant quantity in loop system, the total coolant quantity being selectively adjusted in the coolant circulating system.Specifically, technology people
Member can exist according to the corresponding relationship between the actual conditions sets itself outdoor environment temperature and coolant quantity of the air conditioner
In actual use, the controller can first obtain the corresponding refrigerant value of the outdoor environment temperature, then by the room
The corresponding refrigerant value of external environment temperature is compared with the current refrigerant value, to be selectively adjusted the refrigerant circulation system
Total coolant quantity in system；Also the corresponding temperature value of the available current refrigerant value, by the corresponding temperature of the current refrigerant value
Angle value is compared with the outdoor environment temperature, to be selectively adjusted total coolant quantity in the coolant circulating system.
It will be appreciated to those of skill in the art that these set-up modes be not it is restrictive, technical staff can be according to actually making
With its specific Rule of judgment of demand sets itself, as long as the Rule of judgment is by the outdoor environment temperature and the refrigerant circulation system
Current coolant quantity in system is as basic parameter just without departing from protection scope of the present invention.
Referring next to Fig. 4, which is the specific steps flow chart of the preferred embodiment of control method of the invention.Such as Fig. 4
It is shown, based on the above embodiment described in air conditioner, the preferred embodiment of control method of the invention specifically includes following step
It is rapid:
S101: outdoor environment temperature is obtained；
S102: judge temperature range locating for outdoor environment temperature；
S103: the temperature range according to locating for outdoor environment temperature determines coolant quantity needed for coolant circulating system；
S104: coolant quantity needed for coolant circulating system and the current coolant quantity in coolant circulating system are compared
Compared with；
S105: if coolant quantity needed for coolant circulating system is greater than the current coolant quantity in coolant circulating system,
Refrigerant is conveyed into coolant circulating system；
S106: if coolant quantity needed for coolant circulating system is equal to the current coolant quantity in coolant circulating system,
Total coolant quantity in coolant circulating system is not adjusted；
S107: if coolant quantity needed for coolant circulating system is less than the current coolant quantity in coolant circulating system,
By refrigerant recovering in coolant circulating system.
Further, in step s101, the controller can obtain the room by the outdoor temperature sensor
External environment temperature；It should be noted that the mode that the present invention does not obtain the outdoor environment temperature to the controller make it is any
Limitation, the controller both can obtain outdoor environment temperature by the temperature sensor that the air conditioner itself is arranged,
Outdoor environment temperature can be obtained beyond the clouds by way of networking.
Further, in step s 102, the controller can judge temperature locating for the outdoor environment temperature
Range；It should be noted that technical staff needs according to the actual use multiple temperature ranges of demand sets itself, the present invention is not right
The specific set-up mode of temperature range is limited in any way.
Further, after judging temperature range locating for the outdoor environment temperature, step S103 is executed, i.e.,
The controller can the temperature range according to locating for the outdoor environment temperature, needed for determining in the coolant circulating system
Coolant quantity；In addition it is also necessary to which illustrating is that technical staff also needs to go out different temperatures model according to actual use demand sets itself
Coolant quantity needed for the corresponding coolant circulating system is enclosed, the present invention does not impose any restrictions its specific corresponding relationship,
Technical staff can be according to actual use demand sets itself.
The set-up mode of property as an example, the outdoor environment temperature with it is cold needed for the coolant circulating system
The corresponding relationship of matchmaker's amount is as shown in the table:
It should be noted that needed for the outdoor environment temperature provided in upper table and the coolant circulating system
Corresponding relationship between coolant quantity is merely exemplary, and technical staff can be according to the actual conditions sets itself of the air conditioner
Corresponding relationship between coolant quantity needed for the outdoor environment temperature and the coolant circulating system, and technical staff is also
It can be according to the value of actual use situation sets itself different temperatures range.In addition, skilled artisans appreciate that
It is that the data in upper table can be determined by way of testing or modeling, it is however not limited to the mode tested and modeled.
Referring next to Fig. 4, in step S104, the controller can be by refrigerant needed for the coolant circulating system
Amount is compared with the current coolant quantity in the coolant circulating system, so as to cold according to needed for the coolant circulating system
The comparison result of matchmaker amount and the current coolant quantity in the coolant circulating system, is selectively adjusted in the coolant circulating system
Total coolant quantity.It will be appreciated to those of skill in the art that the present invention is not limited in any way its specific manner of comparison, technology
Personnel can be according to actual use demand sets itself；For example, the controller can directly will be in the coolant circulating system
Required coolant quantity is compared with the current coolant quantity in the coolant circulating system, can also be by the coolant circulating system
Needed for coolant quantity be compared with the difference of the current coolant quantity in the coolant circulating system with default coolant quantity, it is this
The change of actual conditions is without departing from basic principle of the invention.
Further, in step s105, if the controller judge it is cold needed for the coolant circulating system
Matchmaker's amount is greater than the current coolant quantity in the coolant circulating system, then needs to convey refrigerant into the coolant circulating system.Tool
For body, the coolant quantity needed for the coolant circulating system is greater than the current coolant quantity in the coolant circulating system, institute
It states controller and controls the closing of the first control valve 7, the second control valve 8 is opened, and the refrigerant stored in liquid storage component 6 can be conveyed
Into the coolant circulating system；At this point, second flowmeter 10 is able to detect the conveying capacity of refrigerant, meanwhile, the controller energy
The measurement data of second flowmeter 10 is obtained, enough so that the controller can calculate the refrigerant in the coolant circulating system
Amount, and throttle ele-ment 12 can play the role of reducing pressure by regulating flow, to avoid compressor 3 from leading to the problem of liquid hammer.It needs to illustrate
, the difference of coolant quantity and the current coolant quantity in the coolant circulating system needed for the coolant circulating system is exactly
The liquid storage branch needs the coolant quantity conveyed to the coolant circulating system.Therefore, until second flowmeter 10 detects institute
State coolant circulating system described in liquid storage Zhi Luxiang conveying coolant quantity be equal to the coolant circulating system needed for coolant quantity with
When the difference of the current coolant quantity in the coolant circulating system, the controller controls the second control valve 8 and closes, the liquid storage
Branch stops conveying refrigerant.It will be appreciated to those of skill in the art that defeated in the not opposite coolant circulating system of the present invention
The mode of refrigerant is sent to impose any restrictions, technical staff can be according to actual use situation sets itself.
Further, in step s 106, if the controller judge it is cold needed for the coolant circulating system
Matchmaker's amount is equal to the current coolant quantity in the coolant circulating system, then illustrates current coolant quantity in the coolant circulating system just
It is coolant quantity needed for the coolant circulating system well；At this point, total coolant quantity in the coolant circulating system is without carrying out
It adjusts, i.e. air conditioner described in the first control valve operates normally.
Further, in step s 107, if the controller judge it is cold needed for the coolant circulating system
Matchmaker's amount is less than the current coolant quantity in the coolant circulating system, then needs refrigerant recovering in the coolant circulating system.Tool
For body, the coolant quantity needed for the coolant circulating system is less than the current coolant quantity in the coolant circulating system, institute
It states controller and controls the first control valve 7 and open, the second control valve 8 is closed, and the refrigerant in the coolant circulating system can be by
It is recycled in liquid storage component 6；At this point, first flowmeter 9 is able to detect the yield of refrigerant, meanwhile, the controller can obtain
The measurement data of first flowmeter 9 is taken, so that the controller can calculate the coolant quantity in the coolant circulating system, and
And check valve 11 has orientation conducting effect, to guarantee that refrigerant can only flow into liquid storage component 6 from the coolant circulating system
In, it goes back without being flow backwards from liquid storage component 6.It should be noted that current coolant quantity in the coolant circulating system with
The difference of coolant quantity needed for the coolant circulating system is exactly that the liquid storage branch is needed from the coolant circulating system
The coolant quantity of recycling.Therefore, until first flowmeter 9 detects what the liquid storage branch was recycled from the coolant circulating system
Coolant quantity is equal to the difference of coolant quantity needed for current coolant quantity and the coolant circulating system in the coolant circulating system
When value, the controller controls the first control valve 7 and closes, and the liquid storage branch stopping is recycled cold from the coolant circulating system
Matchmaker.It will be appreciated to those of skill in the art that the present invention does not make the mode for recycling refrigerant from the coolant circulating system
Any restrictions, technical staff can be according to actual use situation sets itselfs.
Finally, it should be noted that above-described embodiment is the preferred embodiments of the invention, it is not intended as to the present invention
The limitation of protection scope.Those skilled in the art can according to need when actually using the present invention and be properly added or delete one
Part steps, or exchange the sequence between different step.It is this to change not departing from basic principle of the invention, belong to this
The protection scope of invention.
So far, it has been combined attached drawing and describes the preferred embodiments of the invention, still, those skilled in the art are easy reason
Solution, protection scope of the present invention are expressly not limited to these specific embodiments.Before without departing from the principle of the present invention
It puts, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, after these changes or replacement
Technical solution will fall within the scope of protection of the present invention.
Claims (10)
1. a kind of control method for air conditioner, the air conditioner include coolant circulating system, which is characterized in that the control
Method includes:
Obtain outdoor environment temperature；
Obtain the current coolant quantity in the coolant circulating system；
According to the current coolant quantity in the outdoor environment temperature and the coolant circulating system, it is selectively adjusted the refrigerant
Total coolant quantity in the circulatory system.
2. control method according to claim 1, which is characterized in that " according to the outdoor environment temperature and the refrigerant
The step of current coolant quantity in the circulatory system, total coolant quantity being selectively adjusted in the coolant circulating system ", specifically wraps
It includes:
According to the outdoor environment temperature determine the coolant circulating system needed for coolant quantity；
Coolant quantity needed for the coolant circulating system is compared with the current coolant quantity in the coolant circulating system；
According to coolant quantity needed for the coolant circulating system compared with the current coolant quantity in the coolant circulating system
As a result, being selectively adjusted total coolant quantity in the coolant circulating system.
3. control method according to claim 2, which is characterized in that " cold according to needed for the coolant circulating system
The comparison result of matchmaker amount and the current coolant quantity in the coolant circulating system, is selectively adjusted in the coolant circulating system
Total coolant quantity " the step of specifically include:
If coolant quantity needed for the coolant circulating system is not equal to the current coolant quantity in the coolant circulating system,
Adjust total coolant quantity in the coolant circulating system.
4. control method according to claim 3, which is characterized in that " if cold needed for the coolant circulating system
Matchmaker's amount then adjusts total coolant quantity in the coolant circulating system not equal to the current coolant quantity in the coolant circulating system "
The step of specifically include:
If coolant quantity needed for the coolant circulating system is greater than the current coolant quantity in the coolant circulating system, to
Refrigerant is conveyed in the coolant circulating system.
5. control method according to claim 3, which is characterized in that " if cold needed for the coolant circulating system
Matchmaker's amount then adjusts total coolant quantity in the coolant circulating system not equal to the current coolant quantity in the coolant circulating system "
The step of specifically include:
It, will if coolant quantity needed for the coolant circulating system is less than the current coolant quantity in the coolant circulating system
Refrigerant recovering in the coolant circulating system.
6. control method according to claim 2, which is characterized in that " cold according to needed for the coolant circulating system
The comparison result of matchmaker amount and the current coolant quantity in the coolant circulating system, is selectively adjusted in the coolant circulating system
Total coolant quantity " the step of specifically include:
If coolant quantity needed for the coolant circulating system is equal to the current coolant quantity in the coolant circulating system, no
Adjust total coolant quantity in the coolant circulating system.
7. the control method according to any one of claim 2 to 6, which is characterized in that " according to the outdoor environment temperature
Determine coolant quantity needed for the coolant circulating system " the step of specifically include:
Judge temperature range locating for the outdoor environment temperature；
According to temperature range locating for the outdoor environment temperature, coolant quantity needed for the coolant circulating system is determined.
8. a kind of air conditioner, the air conditioner includes indoor heat exchanger, outdoor heat exchanger, compressor, electric expansion valve and four-way
Valve, the outdoor heat exchanger, the compressor, the indoor heat exchanger and the electric expansion valve constitute the refrigerant circulation of closed loop
System, the four-way valve can commutate so that the air conditioner is in cooling condition or heating condition,
It is characterized in that, the air conditioner further includes the liquid storage branch being connected with the coolant circulating system, the liquid storage branch
It is configured to convey refrigerant into the coolant circulating system and by the refrigerant recovering in the coolant circulating system.
9. air conditioner according to claim 8, which is characterized in that the liquid storage branch road is provided with liquid storage component, first
Control valve and the second control valve,
First control valve and second control valve are separately positioned on the liquid feeding side and tapping side of the liquid storage component.
10. air conditioner according to claim 9, which is characterized in that the liquid storage branch road is additionally provided with first flowmeter
And second flowmeter,
The first flowmeter and the second flowmeter are separately positioned on the liquid feeding side and tapping side of the liquid storage component.
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| CN201811640178.7A CN109724203A (en) | 2018-12-29 | 2018-12-29 | Air conditioner and its control method |
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| CN110529966A (en) * | 2019-09-09 | 2019-12-03 | 宁波奥克斯电气股份有限公司 | A kind of change coolant quantity air-conditioning system and its control method |
| CN110553427A (en) * | 2019-08-16 | 2019-12-10 | 盾安环境技术有限公司 | air conditioning system and control method |
| CN111609478A (en) * | 2020-04-23 | 2020-09-01 | 海信（山东）空调有限公司 | Air conditioner refrigerant automatic adjusting device, control method and air conditioning system |
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Application publication date: 20190507 |