CN105571086B - Control method, control device and the multi-split air conditioner of multi-split air conditioner - Google Patents
Control method, control device and the multi-split air conditioner of multi-split air conditioner Download PDFInfo
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- CN105571086B CN105571086B CN201610123931.XA CN201610123931A CN105571086B CN 105571086 B CN105571086 B CN 105571086B CN 201610123931 A CN201610123931 A CN 201610123931A CN 105571086 B CN105571086 B CN 105571086B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
Abstract
The present invention provides a kind of control method of multi-split air conditioner, control device and multi-split air conditioner, wherein, the control method of the multi-split air conditioner includes：When machine is run in a heating mode simultaneously in machine in the first kind of multi-split air conditioner and at least one Second Type, calculate the second difference between the wind pushing temperature and return air temperature of machine in each Second Type in the first difference and at least one Second Type in the first kind between the wind pushing temperature and return air temperature of machine in machine；According to the second difference, reference difference is determined；If the first difference is more than reference difference, according to the difference between the first difference and reference difference, the rotation speed of fan of machine in the rotation speed of fan of machine in the first kind and/or at least one Second Type of increase is reduced.By technical scheme, there is the phenomenon that refrigerant bias current when can at the same time be heated to avoid the imperial palace machine of multi-split air conditioner and small interior machine, so as to ensure heating capacity than more uniform.
Description
Technical field
The present invention relates to household electrical appliance technical field, in particular to a kind of control method of multi-split air conditioner, one
The control device and a kind of multi-split air conditioner of kind multi-split air conditioner.
Background technology
Multi-split air conditioner is exactly using the interior machine of the multiple and different abilities of outer machine collocation, meets the heating of not chummery
Or refrigeration demand.Multi-split air conditioner often will carry out refrigerant distribution in heating operations are run to machine in difference.Due to difference
The configuration difference of interior machine is big, and the corresponding heat exchange area of imperial palace machine is big so that refrigerant cooldown rate in imperial palace machine is fast, and pressure declines
Soon, this results in imperial palace machine pressure and the pressure of other small interior machines is uneven, so that Biased flow phenomenon, the big portion of refrigerant occurs in refrigerant
Divide and all concentrate in imperial palace machine, other small interior machines heating capacity deficiency, room comfort when lacking refrigerant operation reduce.
Therefore, there is showing for refrigerant bias current when the imperial palace machine of multi-split air conditioner and small interior machine how to be avoided to heat at the same time
As becoming the technical issues of urgently to be resolved hurrily so as to ensure that the heating capacity ratio of imperial palace machine and small interior machine is more uniform.
The content of the invention
It is contemplated that at least solve one of technical problem present in the prior art or correlation technique.
For this purpose, an object of the present invention is to provide a kind of control methods of multi-split air conditioner.
It is another object of the present invention to propose a kind of control device of multi-split air conditioner.
A further object of the present invention is to propose a kind of multi-split air conditioner.
To realize above-mentioned at least one purpose, embodiment according to the first aspect of the invention, it is proposed that one kind one is dragged more
The control method of air conditioner, including：When machine is simultaneously in machine in the first kind of multi-split air conditioner and at least one Second Type
When running in a heating mode, calculate the first difference in the first kind between the wind pushing temperature and return air temperature of machine and
It is second poor between the wind pushing temperature and return air temperature of machine in each Second Type at least one Second Type in machine
Value；According to second difference, reference difference is determined；If first difference is more than the reference difference, according to described the
Difference between one difference and the reference difference is reduced in the first kind described in the rotation speed of fan of machine and/or increase extremely
The rotation speed of fan of machine in a few Second Type.
The control method of multi-split air conditioner according to embodiments of the present invention, machine can be heat exchange area ratio in the first kind
Larger imperial palace machine, machine can be the smaller small interior machine of heat exchange area in Second Type, in the related art, due to the first kind
The heat exchange area of machine is bigger than the heat exchange area of machine in Second Type in type so that refrigerant condenses heat release in the first kind inside machine
Speed ratio condenses exotherm rate in Second Type inside machine fast, therefore, when machine is simultaneously in machine in the first kind and Second Type
When being heated, the pressure in the pressure ratio Second Type in the first kind in machine in machine is high, and such pressure differential has led to
Refrigerant is largely focused in the first kind in machine, and the refrigerant in Second Type in machine is fewer, so that in Second Type
The room heating effect of machine is poor.In this scenario, by calculating the air-supply temperature of machine in machine and Second Type in the first kind
Spend the difference between return air temperature, reduce the rotation speed of fan of machine in the first kind and press down to improve the pressure of machine in the first kind
Refrigeration matchmaker's bias current enters in the first kind in machine and/or the rotation speed of fan of machine reduces by second at least one Second Type of increase
The pressure of machine makes more refrigerants be flowed into Second Type in machine in type, so as to fulfill refrigerant distribution in the first kind
In machine and Second Type in machine more uniformly, and then the uniform heating effect of machine in machine and Second Type is ensured in the first kind.
Preferably, if detecting, the wind turbine of machine at least one Second Type is run with maximum (top) speed, only reduces by first
The rotation speed of fan of machine in type, so as to which the wind turbine of machine at least one Second Type be avoided to break down since rotating speed is excessively high.
The control method of multi-split air conditioner according to the abovementioned embodiments of the present invention can also have following technology spy
Sign：
According to one embodiment of present invention, it is described poor according to described second of machine at least one Second Type
It the step of being worth, determining reference difference, specifically includes：If the quantity of machine is one at least one Second Type, by institute
The second difference is stated as the reference difference；If the quantity of machine is multiple at least one Second Type, described in calculating
The average value of second difference is as the reference difference.
The control method of multi-split air conditioner according to embodiments of the present invention, by determining machine at least one Second Type
The second difference reference difference, so as to reflect the air-supply of machine at least one Second Type exactly according to the reference difference
The difference situation of temperature and return air temperature, and then determine whether the non-uniform situation of refrigerant liquid separation.When there is multiple second classes
Machine is carried out at the same time heating with machine in the first kind in type, and the mode for calculating reference difference is not limited to calculate average value, may be used also
Using calculate machine in multiple Second Types the second difference variance as reference difference.
According to one embodiment of present invention, described the step of reducing the rotation speed of fan of machine in the first kind, specifically
Including：The target value scope where the difference is obtained in multiple numberical ranges；Reduce the wind of machine in the first kind
Machine rotating speed, and the wind turbine of machine in the first kind is made to be run with the corresponding rotating speed of the target value scope.
The control method of multi-split air conditioner according to embodiments of the present invention, according between the first difference and reference difference
Target value scope where difference, the rotating speed that the rotating speed of the wind turbine of the first kind is reduced to the corresponding target value scope are transported
Row, so as to more accurate to the adjusting of the rotation speed of fan of machine in the first kind, to ensure to flow into machine and the second class in the first kind
The refrigerant of machine is more uniform in type.
According to one embodiment of present invention, at least one Second Type of increase the step of the rotation speed of fan of machine,
It specifically includes：The target zone where the difference is obtained in multiple scopes；Increase machine at least one Second Type
Rotation speed of fan, and the wind turbine of machine at least one Second Type is made to be run with the rotating speed of the correspondence target zone；Or
The rotation speed of fan of machine at least one Second Type is increased to maximum by person.
According to one embodiment of present invention, machine is equal in machine and at least one Second Type in the first kind
After running preset time under the heating mode, calculate in the first kind between the wind pushing temperature and return air temperature of machine
The first difference, in each Second Type at least one Second Type in machine the wind pushing temperature and return air temperature of machine it
Between the second difference.
The control method of multi-split air conditioner according to embodiments of the present invention, due to machine in the first kind and at least one
Machine is when just proceeding by heating operation in two types, machine in the first difference of machine and at least one Second Type in the first kind
The second difference can not reflect exactly refrigerant distribution situation, therefore, the machine and at least one second in the first kind
Machine is stable in type and then calculates the first difference and the second difference, so that the first difference calculated and second
Difference can more accurately reflect that refrigerant flows into the situation of machine in machine and Second Type in the first kind.
According to one embodiment of present invention, further include：According to the refrigerating capacity of multiple interior machines of the multi-split air conditioner
And heating capacity, the multiple interior machine is divided into the first kind machine in machine and the Second Type.
The control method of multi-split air conditioner according to embodiments of the present invention, according to multiple interior machines of multi-split air conditioner
Multiple interior machines are divided into the first kind machine in machine and Second Type by refrigerating capacity and heating capacity, wherein, refrigerating capacity and heating capacity generation
The table nominal capacity of interior machine, for example, nominal capacity is 7K, 9K, 12K, 18K, 24K, 36K, it is 24K, 36K by nominal capacity
Interior machine is divided into imperial palace machine, i.e. machine in the first kind, and the interior machine that nominal capacity is 7K, 9K, 12K, 18K is divided into small interior machine,
That is machine in Second Type.
Embodiment according to the second aspect of the invention, it is proposed that a kind of control device of multi-split air conditioner, including：Meter
Unit is calculated, for working as in the first kind of multi-split air conditioner in machine and at least one Second Type machine while in a heating mode
During operation, the first difference in the first kind between the wind pushing temperature and return air temperature of machine and described at least one is calculated
The second difference in each Second Type in Second Type in machine between the wind pushing temperature and return air temperature of machine；Determination unit,
For according to second difference, determining reference difference；Control unit, if being more than the reference difference for first difference
Value then according to the difference between first difference and the reference difference, reduces the rotation speed of fan of machine in the first kind,
And/or increase the rotation speed of fan of machine at least one Second Type.
The control device of multi-split air conditioner according to embodiments of the present invention, machine can be heat exchange area ratio in the first kind
Larger imperial palace machine, machine can be the smaller small interior machine of heat exchange area in Second Type, in the related art, due to the first kind
The heat exchange area of machine is bigger than the heat exchange area of machine in Second Type in type so that refrigerant condenses heat release in the first kind inside machine
Speed ratio condenses exotherm rate in Second Type inside machine fast, therefore, when machine is simultaneously in machine in the first kind and Second Type
When being heated, the pressure in the pressure ratio Second Type in the first kind in machine in machine is high, and such pressure differential has led to
Refrigerant is largely focused in the first kind in machine, and the refrigerant in Second Type in machine is fewer, so that in Second Type
The room heating effect of machine is poor.In this scenario, by calculating the air-supply temperature of machine in machine and Second Type in the first kind
Spend the difference between return air temperature, reduce the rotation speed of fan of machine in the first kind and press down to improve the pressure of machine in the first kind
Refrigeration matchmaker's bias current enters in the first kind in machine and/or the rotation speed of fan of machine reduces by second at least one Second Type of increase
The pressure of machine makes more refrigerants be flowed into Second Type in machine in type, so as to fulfill refrigerant distribution in the first kind
In machine and Second Type in machine more uniformly, and then the uniform heating effect of machine in machine and Second Type is ensured in the first kind.
Preferably, if detecting, the wind turbine of machine at least one Second Type is run with maximum (top) speed, only reduces by first
The rotation speed of fan of machine in type, so as to which the wind turbine of machine at least one Second Type be avoided to break down since rotating speed is excessively high.
According to one embodiment of present invention, the determination unit includes：First determination subelement, if for it is described at least
The quantity of machine is one in one Second Type, then using second difference as the reference difference；Second determination subelement,
If being multiple for the quantity of machine at least one Second Type, calculate described in the average value conduct of second difference
Reference difference.
The control device of multi-split air conditioner according to embodiments of the present invention, by determining machine at least one Second Type
The second difference reference difference, so as to reflect the air-supply of machine at least one Second Type exactly according to the reference difference
The difference situation of temperature and return air temperature, and then determine whether the non-uniform situation of refrigerant liquid separation.When there is multiple second classes
Machine is carried out at the same time heating with machine in the first kind in type, and the mode for calculating reference difference is not limited to calculate average value, may be used also
Using calculate machine in multiple Second Types the second difference variance as reference difference.
According to one embodiment of present invention, described control unit includes：Subelement is obtained, in multiple numberical ranges
The middle target value scope obtained where the difference；Reduction of speed subelement turns for reducing the wind turbine of machine in the first kind
Speed, and the wind turbine of machine in the first kind is made to be run with the corresponding rotating speed of the target value scope.
The control device of multi-split air conditioner according to embodiments of the present invention, according between the first difference and reference difference
Target value scope where difference, the rotating speed that the rotating speed of the wind turbine of the first kind is reduced to the corresponding target value scope are transported
Row, so as to more accurate to the adjusting of the rotation speed of fan of machine in the first kind, to ensure to flow into machine and the second class in the first kind
The refrigerant of machine is more uniform in type.
According to one embodiment of present invention, described control unit is additionally operable to, and the difference institute is obtained in multiple scopes
Target zone；Increase the rotation speed of fan of machine at least one Second Type, and make at least one Second Type
The wind turbine of interior machine is run with the rotating speed of the correspondence target zone；Or the rotation speed of fan of machine at least one Second Type is increased
It is added to maximum.
According to one embodiment of present invention, the computing unit is specifically used for, the machine and described in the first kind
After machine runs preset time under the heating mode at least one Second Type, machine in the first kind is calculated
Second difference of machine in first difference and each Second Type.
The control device of multi-split air conditioner according to embodiments of the present invention, due to machine in the first kind and at least one
Machine is when just proceeding by heating operation in two types, machine in the first difference of machine and at least one Second Type in the first kind
The second difference can not reflect exactly refrigerant distribution situation, therefore, the machine and at least one second in the first kind
Machine is stable in type and then calculates the first difference and the second difference, so that the first difference calculated and second
Difference can more accurately reflect that refrigerant flows into the situation of machine in machine and Second Type in the first kind.
According to one embodiment of present invention, further include：Taxon, for according to the multiple of the multi-split air conditioner
The multiple interior machine is divided into the first kind machine in machine and the Second Type by the refrigerating capacity and heating capacity of interior machine.
The control device of multi-split air conditioner according to embodiments of the present invention, according to multiple interior machines of multi-split air conditioner
Multiple interior machines are divided into the first kind machine in machine and Second Type by refrigerating capacity and heating capacity, wherein, refrigerating capacity and heating capacity generation
The table nominal capacity of interior machine, for example, nominal capacity is 7K, 9K, 12K, 18K, 24K, 36K, it is 24K, 36K by nominal capacity
Interior machine is divided into imperial palace machine, i.e. machine in the first kind, and the interior machine that nominal capacity is 7K, 9K, 12K, 18K is divided into small interior machine,
That is machine in Second Type.
Embodiment according to the third aspect of the invention we, it is proposed that a kind of multi-split air conditioner, including above-mentioned technical proposal
Any one of multi-split air conditioner control device, therefore, the multi-split air conditioner have and above-mentioned technical proposal in
The identical technique effect of the control device of any one of them multi-split air conditioner, details are not described herein.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
It obtains substantially or is recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 shows the schematic flow diagram of the control method of multi-split air conditioner according to an embodiment of the invention；
Fig. 2 shows the schematic block diagram of the control device of multi-split air conditioner according to an embodiment of the invention；
Fig. 3 shows the structure diagram of multi-split air conditioner according to an embodiment of the invention；
Fig. 4 shows the structure diagram of another one driving multiple-unit air conditioner according to an embodiment of the invention；
Fig. 5 shows the exemplary flow of the control method of multi-split air conditioner according to another embodiment of the invention
Figure.
Specific embodiment
It is to better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the case where there is no conflict, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented using other different from other modes described here, therefore, protection scope of the present invention and from described below
Specific embodiment limitation.
Fig. 1 shows the schematic flow diagram of the control method of multi-split air conditioner according to an embodiment of the invention.
As shown in Figure 1, the control method of multi-split air conditioner according to an embodiment of the invention, including：
Step 102, when in machine in the first kind of multi-split air conditioner and at least one Second Type machine simultaneously heating
When being run under pattern, calculate the first difference in the first kind between the wind pushing temperature and return air temperature of machine and it is described extremely
The second difference in each Second Type in a few Second Type in machine between the wind pushing temperature and return air temperature of machine；
Step 104, according to second difference, reference difference is determined；
Step 106, if first difference is more than the reference difference, according to first difference and the reference difference
Difference between value reduces the rotation speed of fan of machine in the first kind and/or increases machine at least one Second Type
Rotation speed of fan.
The control method of multi-split air conditioner according to embodiments of the present invention, machine can be heat exchange area ratio in the first kind
Larger imperial palace machine, machine can be the smaller small interior machine of heat exchange area in Second Type, in the related art, due to the first kind
The heat exchange area of machine is bigger than the heat exchange area of machine in Second Type in type so that refrigerant condenses heat release in the first kind inside machine
Speed ratio condenses exotherm rate in Second Type inside machine fast, therefore, when machine is simultaneously in machine in the first kind and Second Type
When being heated, the pressure in the pressure ratio Second Type in the first kind in machine in machine is high, and such pressure differential has led to
Refrigerant is largely focused in the first kind in machine, and the refrigerant in Second Type in machine is fewer, so that in Second Type
The room heating effect of machine is poor.In this scenario, by calculating the air-supply temperature of machine in machine and Second Type in the first kind
Spend the difference between return air temperature, reduce the rotation speed of fan of machine in the first kind and press down to improve the pressure of machine in the first kind
Refrigeration matchmaker's bias current enters in the first kind in machine and/or the rotation speed of fan of machine reduces by second at least one Second Type of increase
The pressure of machine makes more refrigerants be flowed into Second Type in machine in type, so as to fulfill refrigerant distribution in the first kind
In machine and Second Type in machine more uniformly, and then the uniform heating effect of machine in machine and Second Type is ensured in the first kind.
Preferably, if detecting, the wind turbine of machine at least one Second Type is run with maximum (top) speed, only reduces by first
The rotation speed of fan of machine in type, so as to which the wind turbine of machine at least one Second Type be avoided to break down since rotating speed is excessively high.
The control method of multi-split air conditioner according to the abovementioned embodiments of the present invention can also have following technology spy
Sign：
According to one embodiment of present invention, step 104 specifically includes：If the number of machine at least one Second Type
It measures as one, then using second difference as the reference difference；If the quantity of machine is at least one Second Type
It is multiple, then the average value of second difference is calculated as the reference difference.
The control method of multi-split air conditioner according to embodiments of the present invention, by determining machine at least one Second Type
The second difference reference difference, so as to reflect the air-supply of machine at least one Second Type exactly according to the reference difference
The difference situation of temperature and return air temperature, and then determine whether the non-uniform situation of refrigerant liquid separation.When there is multiple second classes
Machine is carried out at the same time heating with machine in the first kind in type, and the mode for calculating reference difference is not limited to calculate average value, may be used also
Using calculate machine in multiple Second Types the second difference variance as reference difference.
According to one embodiment of present invention, described the step of reducing the rotation speed of fan of machine in the first kind, specifically
Including：The target value scope where the difference is obtained in multiple numberical ranges；Reduce the wind of machine in the first kind
Machine rotating speed, and the wind turbine of machine in the first kind is made to be run with the corresponding rotating speed of the target value scope.
The control method of multi-split air conditioner according to embodiments of the present invention, according between the first difference and reference difference
Target value scope where difference, the rotating speed that the rotating speed of the wind turbine of the first kind is reduced to the corresponding target value scope are transported
Row, so as to more accurate to the adjusting of the rotation speed of fan of machine in the first kind, to ensure to flow into machine and the second class in the first kind
The refrigerant of machine is more uniform in type.
According to one embodiment of present invention, at least one Second Type of increase the step of the rotation speed of fan of machine,
It specifically includes：The target zone where the difference is obtained in multiple scopes；Increase machine at least one Second Type
Rotation speed of fan, and the wind turbine of machine at least one Second Type is made to be run with the rotating speed of the correspondence target zone；Or
The rotation speed of fan of machine at least one Second Type is increased to maximum by person.
According to one embodiment of present invention, machine is equal in machine and at least one Second Type in the first kind
After running preset time under the heating mode, step 102 is performed.
The control method of multi-split air conditioner according to embodiments of the present invention, due to machine in the first kind and at least one
Machine is when just proceeding by heating operation in two types, machine in the first difference of machine and at least one Second Type in the first kind
The second difference can not reflect exactly refrigerant distribution situation, therefore, the machine and at least one second in the first kind
Machine is stable in type and then calculates the first difference and the second difference, so that the first difference calculated and second
Difference can more accurately reflect that refrigerant flows into the situation of machine in machine and Second Type in the first kind.
According to one embodiment of present invention, further include：According to the refrigerating capacity of multiple interior machines of the multi-split air conditioner
And heating capacity, the multiple interior machine is divided into the first kind machine in machine and the Second Type.
The control method of multi-split air conditioner according to embodiments of the present invention, according to multiple interior machines of multi-split air conditioner
Multiple interior machines are divided into the first kind machine in machine and Second Type by refrigerating capacity and heating capacity, wherein, refrigerating capacity and heating capacity generation
The table nominal capacity of interior machine, for example, nominal capacity is 7K, 9K, 12K, 18K, 24K, 36K, it is 24K, 36K by nominal capacity
Interior machine is divided into imperial palace machine, i.e. machine in the first kind, and the interior machine that nominal capacity is 7K, 9K, 12K, 18K is divided into small interior machine,
That is machine in Second Type.
Fig. 2 shows the schematic block diagram of the control device of multi-split air conditioner according to an embodiment of the invention.
As shown in Fig. 2, the control device 200 of multi-split air conditioner according to an embodiment of the invention, including：Computing unit
202nd, determination unit 204 and control unit 206, wherein, computing unit 202 is used for when machine in the first kind of multi-split air conditioner
When being run in a heating mode simultaneously with machine at least one Second Type, calculate in the first kind wind pushing temperature of machine with
The air-supply temperature of machine in each Second Type in the first difference and at least one Second Type between return air temperature in machine
The second difference between degree and return air temperature；Determination unit 204, for according to second difference, determining reference difference；Control
Unit 206, if being more than the reference difference for first difference, according to first difference and the reference difference it
Between difference, reduce the wind of machine in the rotation speed of fan of machine in the first kind and/or increase at least one Second Type
Machine rotating speed.
The control device of multi-split air conditioner according to embodiments of the present invention, machine can be heat exchange area ratio in the first kind
Larger imperial palace machine, machine can be the smaller small interior machine of heat exchange area in Second Type, in the related art, due to the first kind
The heat exchange area of machine is bigger than the heat exchange area of machine in Second Type in type so that refrigerant condenses heat release in the first kind inside machine
Speed ratio condenses exotherm rate in Second Type inside machine fast, therefore, when machine is simultaneously in machine in the first kind and Second Type
When being heated, the pressure in the pressure ratio Second Type in the first kind in machine in machine is high, and such pressure differential has led to
Refrigerant is largely focused in the first kind in machine, and the refrigerant in Second Type in machine is fewer, so that in Second Type
The room heating effect of machine is poor.In this scenario, by calculating the air-supply temperature of machine in machine and Second Type in the first kind
Spend the difference between return air temperature, reduce the rotation speed of fan of machine in the first kind and press down to improve the pressure of machine in the first kind
Refrigeration matchmaker's bias current enters in the first kind in machine and/or the rotation speed of fan of machine reduces by second at least one Second Type of increase
The pressure of machine makes more refrigerants be flowed into Second Type in machine in type, so as to fulfill refrigerant distribution in the first kind
In machine and Second Type in machine more uniformly, and then the uniform heating effect of machine in machine and Second Type is ensured in the first kind.
Preferably, if detecting, the wind turbine of machine at least one Second Type is run with maximum (top) speed, only reduces by first
The rotation speed of fan of machine in type, so as to which the wind turbine of machine at least one Second Type be avoided to break down since rotating speed is excessively high.
According to one embodiment of present invention, the determination unit 204 includes：First determination subelement 2042, if for
The quantity of machine is one at least one Second Type, then using second difference as the reference difference；Second really
Stator unit 2044 if being multiple for the quantity of machine at least one Second Type, calculates second difference
Average value is as the reference difference.
The control device of multi-split air conditioner according to embodiments of the present invention, by determining machine at least one Second Type
The second difference reference difference, so as to reflect the air-supply of machine at least one Second Type exactly according to the reference difference
The difference situation of temperature and return air temperature, and then determine whether the non-uniform situation of refrigerant liquid separation.When there is multiple second classes
Machine is carried out at the same time heating with machine in the first kind in type, and the mode for calculating reference difference is not limited to calculate average value, may be used also
Using calculate machine in multiple Second Types the second difference variance as reference difference.
According to one embodiment of present invention, described control unit 206 includes：Subelement 2062 is obtained, for multiple
The target value scope where the difference is obtained in numberical range；Reduction of speed subelement 2064, for reducing the first kind
The rotation speed of fan of interior machine, and the wind turbine of machine in the first kind is made to be run with the corresponding rotating speed of the target value scope.
The control device of multi-split air conditioner according to embodiments of the present invention, according between the first difference and reference difference
Target value scope where difference, the rotating speed that the rotating speed of the wind turbine of the first kind is reduced to the corresponding target value scope are transported
Row, so as to more accurate to the adjusting of the rotation speed of fan of machine in the first kind, to ensure to flow into machine and the second class in the first kind
The refrigerant of machine is more uniform in type.
According to one embodiment of present invention, at least one Second Type of increase the step of the rotation speed of fan of machine,
It specifically includes：The target zone where the difference is obtained in multiple scopes；Increase machine at least one Second Type
Rotation speed of fan, and the wind turbine of machine at least one Second Type is made to be run with the rotating speed of the correspondence target zone；Or
The rotation speed of fan of machine at least one Second Type is increased to maximum by person.
According to one embodiment of present invention, the computing unit 202 is specifically used for, machine and institute in the first kind
It states after machine runs preset time under the heating mode at least one Second Type, calculates machine in the first kind
First difference and each Second Type in machine second difference.
The control device of multi-split air conditioner according to embodiments of the present invention, due to machine in the first kind and at least one
Machine is when just proceeding by heating operation in two types, machine in the first difference of machine and at least one Second Type in the first kind
The second difference can not reflect exactly refrigerant distribution situation, therefore, the machine and at least one second in the first kind
Machine is stable in type and then calculates the first difference and the second difference, so that the first difference calculated and second
Difference can more accurately reflect that refrigerant flows into the situation of machine in machine and Second Type in the first kind.
According to one embodiment of present invention, further include：Taxon 208, for according to the multi-split air conditioner
The multiple interior machine is divided into the first kind in machine and the Second Type by the refrigerating capacity and heating capacity of multiple interior machines
Machine.
The control device of multi-split air conditioner according to embodiments of the present invention, according to multiple interior machines of multi-split air conditioner
Multiple interior machines are divided into the first kind machine in machine and Second Type by refrigerating capacity and heating capacity, wherein, refrigerating capacity and heating capacity generation
The table nominal capacity of interior machine, for example, nominal capacity is 7K, 9K, 12K, 18K, 24K, 36K, it is 24K, 36K by nominal capacity
Interior machine is divided into imperial palace machine, i.e. machine in the first kind, and the interior machine that nominal capacity is 7K, 9K, 12K, 18K is divided into small interior machine,
That is machine in Second Type.
Fig. 3 shows the structure diagram of multi-split air conditioner according to an embodiment of the invention.
As shown in figure 3, multi-split air conditioner 300 according to an embodiment of the invention, including any in above-mentioned technical proposal
Described in multi-split air conditioner control device 200, therefore, the multi-split air conditioner 300 have and above-mentioned technical proposal in
The identical technique effect of the control device 200 of any one of them multi-split air conditioner, details are not described herein.
Fig. 4 shows the structure diagram of multi-split air conditioner according to an embodiment of the invention；Fig. 5 is shown according to this
The schematic flow diagram of the control method of the multi-split air conditioner of another embodiment of invention.
With reference to Fig. 4 and Fig. 5 technical solution that the present invention will be described in detail：
As shown in figure 4, in this embodiment, multi-split air conditioner 400 includes：Machine 404 in outdoor unit 402,7K, machine in 9K
Machine 408 in 406 and 24K, wherein, machine 404 in 7K, machine 406 is small interior machine in 9K, and machine 408 is imperial palace machine in 24K.
As shown in figure 5, the control method of another one driving multiple-unit air conditioner according to an embodiment of the invention, including：
Step 502, multi-split air conditioner detects indoor unit operation conditions after heating mode is run；
Step 504, the interior machine and other interior machines for determining whether 24K run heating mode simultaneously, are yes in judging result
When, 506 are entered step, otherwise, enters step 502；
If for example, detect the interior machine of 24K and machine in 7K simultaneously in heating mode, i.e., imperial palace machine and small interior machine and meanwhile into
Row heating is then likely to occur the non-uniform situation of refrigerant distribution for flowing into imperial palace machine and small interior machine, then enters step 506.If only
Detect that machine is run simultaneously in machine and 9K in the interior machine isolated operation or 7K of 24K, there is no refrigerants to distribute non-uniform feelings
Condition then enters step 502, continues to detect the operating status of indoor unit, with detect whether there are imperial palace machine and small interior machine simultaneously into
The situation of row heating.
Step 506, after running setting time tset1, between the wind pushing temperature and return air temperature of the interior machine for detecting 24K
Difference △ T1 calculate the average value △ T of the difference between other interior machine wind pushing temperatures and return air temperature；
For example, machine, machine in 9K, machine heating operation simultaneously in 24K in the 7K, machine in 7K, machine in 9K are calculated respectively, in 24K
Difference between the wind pushing temperature and return air temperature of machine, then calculate in 7K in machine and 9K the wind pushing temperature of machine and return air temperature it
Between difference average value △ T；When machine heating operation simultaneously in machine in 7K and 24K, sending for machine in machine and 24K is calculated in 7K respectively
Difference between air temperature and return air temperature, directly using the difference between the wind pushing temperature and return air temperature of machine in 7K as △ T.
Step 508, judge whether the difference △ T1 of machine in 24K are more than the average value △ T of other interior machines, be in judging result
When being, there is the phenomenon that bias current in the refrigerant for illustrating to flow into imperial palace machine and small interior machine, enters step 510, otherwise, illustrates to flow into big
Refrigerant in interior machine and small interior machine does not occur the phenomenon that bias current, enters step 506；
Step 510, the difference in 24K between the difference △ T1 of machine and the average value △ T of other interior machines is calculated, according to the difference
Scope where being worth, corresponding gear is reduced to by the wind speed of the wind turbine of the interior machine of 24K.
For example, pre-set tetra- numberical ranges of A, B, C, D, tetra- numberical ranges of A, B, C, D be corresponding in turn to Pa, Pb, Pc,
Tetra- windscreens of Pd according to the numberical range in tetra- numberical ranges of A, B, C, D where the difference between △ T1 and △ T, adjust 24K
The rotation speed of fan of interior machine is down to corresponding windscreen, to improve the pressure of machine in 24K, inhibits refrigerant bias current and enters machine in 24K, so as to
Weaken the heat exchange property of machine in 24K, realize all interior machine uniform liquid separations in heating mode is run, meet the heating in each room
Demand.
In addition, imperial palace machine and multiple small interior machines there are one general multi-split air conditioner tools, if multi-split air conditioner is with more
A imperial palace machine and multiple small interior machines, and multiple imperial palace machines and multiple small interior machines run heating mode simultaneously, then select multiple imperial palaces
One of imperial palace machine in machine calculates the first difference between the wind pushing temperature and return air temperature of the imperial palace machine, calculates multiple
The second difference in small interior machine between the wind pushing temperature and return air temperature of each small interior machine；Calculate the second difference of multiple small interior machines
Average value as reference difference, if the first difference is more than reference difference, according to the difference between the first difference and reference difference
Value reduces the rotation speed of fan of imperial palace machine and/or the rotation speed of fan of the small interior machine of increase.
Technical scheme is described in detail above in association with attached drawing, it, can be to avoid by technical scheme
There is the phenomenon that refrigerant bias current when heating at the same time in the imperial palace machine of multi-split air conditioner and small interior machine, so as to ensure imperial palace machine and small
The heating capacity of interior machine is than more uniform.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of control method of multi-split air conditioner, which is characterized in that including：
When machine is run in a heating mode simultaneously in machine in the first kind of multi-split air conditioner and at least one Second Type,
Calculate the first difference in the first kind between the wind pushing temperature and return air temperature of machine and at least one Second Type
The second difference in each Second Type in interior machine between the wind pushing temperature and return air temperature of machine；
According to second difference, reference difference is determined；
If first difference is more than the reference difference, according to the difference between first difference and the reference difference
Value, the wind turbine for reducing machine in the rotation speed of fan of machine in the first kind and/or increase at least one Second Type turn
Speed；
Wherein, the heat exchange area of machine is bigger than the heat exchange area of machine in the Second Type in the first kind；Or
According to the refrigerating capacity and heating capacity of multiple interior machines of the multi-split air conditioner, the multiple interior machine is divided into described first
Machine in machine and the Second Type in type.
2. the control method of multi-split air conditioner according to claim 1, which is characterized in that at least one described in the basis
Second difference of machine in a Second Type, specifically includes the step of determining reference difference：
If the quantity of machine is one at least one Second Type, using second difference as the reference difference；
If the quantity of machine is multiple at least one Second Type, calculate described in the average value conduct of second difference
Reference difference.
3. the control method of multi-split air conditioner according to claim 1, which is characterized in that described to reduce the first kind
In type the step of the rotation speed of fan of machine, specifically include：
The target value model where the difference between first difference and the reference difference is obtained in multiple numberical ranges
It encloses；
The rotation speed of fan of machine in the first kind is reduced, and makes the wind turbine of machine in the first kind with the target value model
Enclose corresponding rotating speed operation.
4. the control method of multi-split air conditioner according to claim 1, which is characterized in that the machine in the first kind
After running preset time under the heating mode with machine at least one Second Type, the first kind is calculated
In first difference and each Second Type between the wind pushing temperature and return air temperature of interior machine the wind pushing temperature of machine with
Second difference between return air temperature.
5. a kind of control device of multi-split air conditioner, which is characterized in that including：
Computing unit, for working as in the first kind of multi-split air conditioner machine in machine and at least one Second Type while heating
When being run under pattern, calculate the first difference in the first kind between the wind pushing temperature and return air temperature of machine and it is described extremely
The second difference in each Second Type in a few Second Type in machine between the wind pushing temperature and return air temperature of machine；
Determination unit, for according to second difference, determining reference difference；
Control unit, if being more than the reference difference for first difference, according to first difference and the benchmark
Difference between difference reduces the rotation speed of fan of machine in the first kind and/or increases at least one Second Type
The rotation speed of fan of machine；
Wherein, the heat exchange area of machine is bigger than the heat exchange area of machine in the Second Type in the first kind；Or
According to the refrigerating capacity and heating capacity of multiple interior machines of the multi-split air conditioner, the multiple interior machine is divided into described first
Machine in machine and the Second Type in type.
6. the control device of multi-split air conditioner according to claim 5, which is characterized in that the determination unit includes：
First determination subelement, it is poor by described second if being one for the quantity of machine at least one Second Type
Value is used as the reference difference；
Second determination subelement if being multiple for the quantity of machine at least one Second Type, calculates described second
The average value of difference is as the reference difference.
7. the control device of multi-split air conditioner according to claim 5, which is characterized in that described control unit includes：
Subelement is obtained, for obtaining the difference institute between first difference and the reference difference in multiple numberical ranges
Target value scope；
Reduction of speed subelement for reducing the rotation speed of fan of machine in the first kind, and makes the wind turbine of machine in the first kind
With the corresponding rotating speed operation of the target value scope.
8. the control device of multi-split air conditioner according to claim 5, which is characterized in that the computing unit is specifically used
In,
When machine runs default under the heating mode in machine and at least one Second Type in the first kind
Between after, calculate first difference in the first kind between the wind pushing temperature and return air temperature of machine and described each
Second difference in Second Type between the wind pushing temperature and return air temperature of machine.
9. a kind of multi-split air conditioner, which is characterized in that including：One as any one of claim 5 to 8 drags more air-conditionings
The control device of device.
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| CN110017592A (en) * | 2019-03-11 | 2019-07-16 | 广东美的暖通设备有限公司 | Multi-connected machine control method, device and equipment |
| CN112815491A (en) * | 2021-01-15 | 2021-05-18 | 广东积微科技有限公司 | Refrigerant distribution system and method for air conditioner, computer equipment and storage medium |
| CN113465135B (en) * | 2021-04-25 | 2023-02-17 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner and intelligent air conditioner |
| CN115183398B (en) * | 2022-07-29 | 2023-10-20 | 青岛海尔空调电子有限公司 | Air conditioner control method, device, equipment and medium |
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