CN105241007B - A kind of control method for frequency conversion air conditioner and device - Google Patents
A kind of control method for frequency conversion air conditioner and device Download PDFInfo
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- CN105241007B CN105241007B CN201510642048.7A CN201510642048A CN105241007B CN 105241007 B CN105241007 B CN 105241007B CN 201510642048 A CN201510642048 A CN 201510642048A CN 105241007 B CN105241007 B CN 105241007B
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Abstract
The embodiment of the present invention provides a kind of control method for frequency conversion air conditioner and device, when load is lighter indoors, can reduce the fluctuation of indoor temperature, the steady control to indoor temperature be realized, when load is heavier indoors, it is ensured that indoor temperature can reach design temperature.Method includes：Indoor temperature is detected according to default detection cycle；Variable quantity of the temperature approach and indoor temperature change generated in case rate or indoor temperature of acquisition current indoor temperature and design temperature in previous detection cycle, however, it is determined that the absolute value of temperature approach is less than predetermined threshold value, performs the stability contorting stage：Obtain the running frequency of compressor, and variable quantity and running frequency according to temperature approach, indoor temperature change generated in case rate or indoor temperature in previous detection cycle, determine the first running frequency increment size, first object frequency is obtained according to the first running frequency increment size and running frequency, controls compressor to be run with first object frequency in next detection cycle.The present invention is applied to air-conditioning technical field.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of control method for frequency conversion air conditioner and device.
Background technology
Convertible frequency air-conditioner controls the frequency of supply of compressor using frequency conversion control technique, realizes the regulation to compressor rotary speed,
Reach the purpose of control room temperature by the speed of compressor rotary speed.It is required that convertible frequency air-conditioner can be such that room is rapidly reached in a short time
The temperature wanted, while temperature difference fluctuation is smaller under the slow-speed of revolution, low energy consumption state, therefore with quick, energy-conservation and comfortable temperature control
Advantage.
In the prior art, generally according to current indoor temperature and the temperature difference of design temperature and the temperature difference in controlling cycle
Variable quantity, obtain the increment size of compressor operating frequency, so by the running frequency of the increment size and current compressor and
As the command object value of next controlling cycle compressor frequency, referred in next controlling cycle control compressor with the target
Value is made to run.Because the increment size of running frequency is being controlled according to current indoor temperature and the temperature difference of design temperature and the temperature difference
The fixed value that variable quantity in cycle processed obtains, it is not related with the running frequency of current compressor, therefore, in compressor
In the case of running frequency is higher different with relatively low two kinds, if indoor temperature and the temperature difference of design temperature and the temperature difference are being controlled
Variable quantity in cycle processed is identical, and obtained running frequency increment size is i.e. identical.So, when load is lighter indoors, by
Smaller in the running frequency of compressor, the change of compressor operating frequency is relatively large caused by the running frequency increment size,
Cause fluctuations in indoor temperature larger；And when load is heavier indoors, because the running frequency of compressor is larger, the running frequency increases
The change of compressor operating frequency caused by value is relatively fewer, and the change to indoor temperature just shows slightly deficiency, causes interior
The time of temperature arrival design temperature greatly prolongs or indoor temperature is unable to reach design temperature.
To sum up, prior art can make fluctuations in indoor temperature larger when load is lighter indoors, when load is heavier indoors,
Change to indoor temperature slightly has deficiency, cause indoor temperature reach design temperature time greatly prolong or indoor temperature without
Method reaches design temperature.
The content of the invention
Therefore, embodiments of the invention provide a kind of control method for frequency conversion air conditioner and device, it is above-mentioned existing at least to solve
The problem of technology is present, when load is lighter indoors, the fluctuation of indoor temperature can be reduced, realize the steady control to indoor temperature
System, when load is heavier indoors, it is ensured that indoor temperature can reach design temperature.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
First aspect, there is provided a kind of control method for frequency conversion air conditioner, including：
Indoor temperature is detected according to default detection cycle；
At the current detection moment, obtain current indoor temperature and design temperature temperature approach and indoor temperature change generated in case rate or
Variable quantity of the indoor temperature in previous detection cycle, determines whether the absolute value of the temperature approach is less than predetermined threshold value；
If so, performing the stability contorting stage, the stability contorting stage includes：
The running frequency of the compressor is obtained, and according to the temperature approach, the indoor temperature change generated in case rate or the room
Variable quantity and the running frequency of the interior temperature in previous detection cycle, determine the first running frequency increment size；
According to the first running frequency increment size and the running frequency, first object frequency is obtained；
In next detection cycle, the compressor is controlled to be run with the first object frequency.
Second aspect, there is provided a kind of convertible frequency air-conditioner control device, including：Detection unit, acquiring unit, determining unit and
Execution unit；
The detection unit, for detecting indoor temperature according to default detection cycle；
The acquiring unit, for obtaining the temperature approach and indoor temperature change generated in case rate of current indoor temperature and design temperature
Or variable quantity of the indoor temperature in previous detection cycle；
The determining unit, for determining whether the absolute value of the temperature approach is less than predetermined threshold value；
The execution unit, if the absolute value for determining the temperature approach for the determining unit is less than the default threshold
Value, the stability contorting stage is performed, the stability contorting stage includes：
The running frequency of the compressor is obtained, and according to the temperature approach, the indoor temperature change generated in case rate or the room
Variable quantity and the running frequency of the interior temperature in previous detection cycle, determine the first running frequency increment size；
According to the first running frequency increment size and the running frequency, first object frequency is obtained；
In next detection cycle, the compressor is controlled to be run with the first object frequency.
In the prior art, the running frequency increment size of compressor be according to the temperature difference of current indoor temperature and design temperature with
And variable quantity acquisition of the temperature difference in controlling cycle, it is not related with current compressor running frequency, therefore, in compressor
In the case of running frequency is higher different with relatively low two kinds, if indoor temperature and the temperature difference of design temperature and the temperature difference are being controlled
Variable quantity in cycle processed is identical, and obtained running frequency increment size is i.e. identical.Therefore, load is lighter indoors for prior art
When, fluctuations in indoor temperature can be made larger, when load is heavier indoors, the change to indoor temperature is again slightly insufficient, causes interior
The time of temperature arrival design temperature greatly prolongs or indoor temperature is unable to reach design temperature.
And control method for frequency conversion air conditioner provided in an embodiment of the present invention and device are based on, when indoor temperature and design temperature
When the absolute value of temperature approach is less than predetermined threshold value, i.e., when indoor temperature is closer to design temperature, perform stability contorting stage, root
According to the variable quantity of indoor temperature and the temperature approach of design temperature, indoor temperature change generated in case rate or indoor temperature in previous detection cycle
And compressor operating frequency, running frequency increment size is determined, compressor operating frequency is controlled by running frequency increment size
Amplitude of variation.In the stability contorting stage, due to it is determined that during running frequency increment size, introducing the reality of current compressor
Border running frequency running frequency, the actual motion frequency of running frequency increment size and current compressor is linked up, therefore,
Indoors load compared with it is light, compressor operating frequency is relatively low when, by running frequency increment size can control compressor operating frequency with
Relatively small changes in amplitude, so that it is guaranteed that its change to indoor temperature is smaller, finally make it that the fluctuation of indoor temperature is smaller,
Realize the steady control to indoor temperature；And when load is heavier indoors, compressor operating frequency is higher, increased by running frequency
Value can control compressor operating frequency with relatively large changes in amplitude, so that it is guaranteed that its change to indoor temperature is enough
Greatly, finally ensure that indoor temperature can reach design temperature.
To sum up, based on control method for frequency conversion air conditioner provided in an embodiment of the present invention and device, when load is lighter indoors, energy
Enough reduce the fluctuation of indoor temperature, the steady control to indoor temperature is realized, when load is heavier indoors, it is ensured that indoor temperature
Design temperature can be reached.
Brief description of the drawings
Fig. 1 is a kind of control method for frequency conversion air conditioner schematic flow sheet one provided in an embodiment of the present invention；
Fig. 2 is a kind of control method for frequency conversion air conditioner schematic flow sheet two provided in an embodiment of the present invention；
Fig. 3 is a kind of control method for frequency conversion air conditioner schematic flow sheet three provided in an embodiment of the present invention；
Fig. 4 is a kind of control method for frequency conversion air conditioner schematic flow sheet four provided in an embodiment of the present invention；
Fig. 5 is a kind of control method for frequency conversion air conditioner schematic flow sheet five provided in an embodiment of the present invention；
Fig. 6 is a kind of control method for frequency conversion air conditioner schematic flow sheet six provided in an embodiment of the present invention；
Fig. 7 is a kind of structural representation of convertible frequency air-conditioner control device provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
For the ease of clearly describing the technical scheme of the embodiment of the present invention, in an embodiment of the present invention, employ " the
One ", the printed words such as " second " make a distinction to function and the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not defined to quantity and execution order.
Embodiment one,
The embodiment of the present invention provides a kind of control method for frequency conversion air conditioner, as shown in figure 1, including：
S101, convertible frequency air-conditioner control device detect indoor temperature according to default detection cycle.
S102, convertible frequency air-conditioner control device obtain the temperature approach of current indoor temperature and design temperature at the current detection moment
And the variable quantity of indoor temperature change generated in case rate or indoor temperature in previous detection cycle.
S103, convertible frequency air-conditioner control device determine whether temperature approach is less than predetermined threshold value.
If so, performing the stability contorting stage, the stability contorting stage includes step S104-S107：
S104, convertible frequency air-conditioner control device obtain the running frequency of compressor.
S105, convertible frequency air-conditioner control device are according to temperature approach, indoor temperature change generated in case rate or indoor temperature in previous detection week
Variable quantity and running frequency in phase, determine the first running frequency increment size.
S106, convertible frequency air-conditioner control device obtain first object according to the first running frequency increment size and running frequency
Frequency.
S107, convertible frequency air-conditioner control device control compressor to be run with first object frequency in next detection cycle.
, wherein it is desired to explanation, the design temperature refer to user and pass through air-conditioning remote control or indoor apparatus of air conditioner chain of command
The target temperature of plate setting.It will appreciated by the skilled person that if indoor temperature and the temperature approach of design temperature is exhausted
Predetermined threshold value is less than to value, represents that indoor temperature is closer to design temperature；Accordingly, if indoor temperature and design temperature
The absolute value of temperature approach is more than predetermined threshold value, illustrates that now indoor temperature differs more with design temperature.Wherein, predetermined threshold value can
Obtained beforehand through many experiments, the embodiment of the present invention is not especially limited to this.
In addition, it should be noted that, the indoor temperature change generated in case rate represents change of the indoor temperature in a detection cycle
Change degree, one detection cycle refer to a detection cycle from previous detection moment to the current detection moment；It is described
Variable quantity of the indoor temperature in previous detection cycle refers to the indoor temperature at current detection moment and the interior of previous detection moment
The difference of temperature.
Based on control method for frequency conversion air conditioner provided in an embodiment of the present invention, when indoor temperature and the temperature approach of design temperature
When absolute value is less than predetermined threshold value, i.e., when indoor temperature is closer to design temperature, the stability contorting stage is performed, according to Indoor Temperature
Variable quantity and compression of the temperature approach, indoor temperature change generated in case rate or indoor temperature of degree and design temperature in previous detection cycle
Machine running frequency, running frequency increment size is determined, the amplitude of variation of compressor operating frequency is controlled by running frequency increment size.
Due to it is determined that during running frequency increment size, introducing the actual motion frequency running frequency of current compressor, will transport
The actual motion frequency of line frequency increment size and current compressor links up, and therefore, load is relatively light indoors, compressor fortune
When line frequency is relatively low, compressor operating frequency can control with relatively small changes in amplitude by running frequency increment size, so that
Ensure that its change to indoor temperature is smaller, finally make it that the fluctuation of indoor temperature is smaller, realize the steady control to indoor temperature
System；And when load is heavier indoors, compressor operating frequency is higher, compressor operating frequency can control by running frequency increment size
Rate is with relatively large changes in amplitude, so that it is guaranteed that its change to indoor temperature is sufficiently large, it is final to ensure that indoor temperature
Reach design temperature.
In a kind of implementation of the embodiment of the present invention, convertible frequency air-conditioner control device is according to temperature approach, indoor temperature change generated in case
The variable quantity and running frequency of rate or indoor temperature in previous detection cycle, determine the first running frequency increment size (i.e.
S105), can specifically include：
S105a, convertible frequency air-conditioner control device are according to temperature approach and indoor temperature change generated in case rate or indoor temperature in previous inspection
The variable quantity surveyed in the cycle, determines running frequency increment coefficient.
Wherein, running frequency increment coefficient is more than -1 and less than 1.
Running frequency is multiplied by S105b, convertible frequency air-conditioner control device with running frequency increment coefficient, obtains the first operation frequency
Rate increment size.
Further, convertible frequency air-conditioner control device according to temperature approach and indoor temperature change generated in case rate or indoor temperature previous
Variable quantity in detection cycle, running frequency increment coefficient (i.e. step S105a) is determined, can specifically be included：
Convertible frequency air-conditioner control device is according to temperature approach and indoor temperature change generated in case rate or indoor temperature in previous detection cycle
Interior variable quantity, the first rule list to prestore is inquired about, determines running frequency increment coefficient.
Wherein, the first rule list is the change of temperature approach and indoor temperature change generated in case rate or indoor temperature in previous detection cycle
Change amount and the corresponding relation of running frequency increment coefficient, it is readily appreciated that, the first rule list can obtain beforehand through many experiments, this
Inventive embodiments are not especially limited to this.
Further, as shown in Fig. 2 in control method for frequency conversion air conditioner provided in an embodiment of the present invention, if convertible frequency air-conditioner control
Device processed determines that temperature approach is not less than predetermined threshold value, performs the quick control stage, and the quick control stage includes step S108-
S110：
S108, convertible frequency air-conditioner control device are according to temperature approach and indoor temperature change generated in case rate or indoor temperature in previous detection
Variable quantity in cycle, determine the second running frequency increment size.
S109, convertible frequency air-conditioner control device obtain the running frequency of compressor, and according to running frequency and the second operation frequency
Rate increment size, obtain the second target frequency.
S110, convertible frequency air-conditioner control device are run in next detection moment control compressor with the second target frequency.
That is, control method for frequency conversion air conditioner provided in an embodiment of the present invention, indoors temperature and the temperature approach of design temperature
When absolute value is more than predetermined threshold value, i.e., when indoor temperature differs more with design temperature, the quick control stage is performed, according to interior
The variable quantity of temperature and the temperature approach and indoor temperature change generated in case rate or indoor temperature of design temperature in previous detection cycle, really
Running frequency increment size corresponding to fixed, the amplitude that compressor operating frequency changes directly is controlled by running frequency increment size,
Indoor temperature is set quickly close to design temperature, to realize the quick control of indoor temperature.
In a kind of possible implementation, convertible frequency air-conditioner control device is according to temperature approach and indoor temperature change generated in case rate or room
Variable quantity of the interior temperature in previous detection cycle, the second running frequency increment size (i.e. step S108) is determined, can specifically be wrapped
Include：
Convertible frequency air-conditioner control device is according to temperature approach and indoor temperature change generated in case rate or indoor temperature in previous detection cycle
Interior variable quantity, the Second Rule table to prestore is inquired about, determine the second running frequency increment size.
Wherein, Second Rule table is the change of temperature approach and indoor temperature change generated in case rate or indoor temperature in previous detection cycle
Change amount and the corresponding relation of the second running frequency increment size, it is readily appreciated that, Second Rule table can obtain beforehand through many experiments,
The embodiment of the present invention is not especially limited to this.
Exemplary, provide a kind of possible first rule list and Second Rule table respectively as shown in Table 1 and Table 2, E in table
Indoor temperature and the temperature approach of design temperature are represented, Δ T represents variable quantity of the indoor temperature in previous detection cycle, Δ F tables
Show the second running frequency increment size, α represents running frequency increment coefficient.
Table 1
Table 2
In the quickly control stage, the running frequency increment size according to corresponding to determining Second Rule table as shown in table 2, pass through
Running frequency increment size controls compressor operating frequency with larger changes in amplitude, so that indoor temperature is quickly close to setting temperature
Degree, realizes the quick control of indoor temperature.And when indoor temperature is closer to design temperature, the stability contorting stage is entered,
Running frequency increment coefficient is obtained according to the first rule list as shown in table 2, compressor is controlled by running frequency increment coefficient
Running frequency changes, after determining running frequency increment coefficient, by the running frequency of running frequency increment coefficient and current compressor
It is multiplied and obtains running frequency increment size, therefore, if the running frequency of current compressor is higher, obtained running frequency increment
Value is also larger, if the running frequency of current compressor is relatively low, obtained running frequency increment size is also smaller.In this way, it can incite somebody to action
The running frequency increment size of compressor and the actual motion frequency of current compressor connect, so, indoors load it is relatively light,
When compressor operating frequency is relatively low, obtained running frequency increment size is smaller, compressor caused by the running frequency increment size
The change of running frequency is relatively small, and then the change to indoor temperature will be smaller, the final fluctuation for causing indoor temperature compared with
It is small, realize the steady control to indoor temperature；And when load is heavier indoors, compressor operating frequency is higher, obtained operation
Frequency increment value is larger, and the change of compressor operating frequency is relatively large caused by the running frequency increment size, and then ensures
Change to indoor temperature is sufficiently large, so as to ensure that indoor temperature can reach design temperature.
Certainly, it is necessary to illustrate, it will appreciated by the skilled person that described above is only the embodiment of the present invention
A kind of specific implementation provided, the embodiment of the present invention are not limited to this.
In addition, what deserves to be explained is, prior art is being controlled with indoor temperature and the temperature difference of design temperature and the temperature difference
Variable quantity in cycle is controlled as controlled quentity controlled variable to compressor operating frequency, and after design temperature changes, indoor temperature
Significant changes will occur immediately with the temperature difference of design temperature, and then cause difference variation amount that significant changes occur, so as to bring fortune
The disturbance of line frequency increment size.Now, if current compressor running frequency is smaller, running frequency increment size can transport compressor
Significant changes occur for line frequency, equally indoor temperature can be fluctuated, influence the stability of indoor temperature.And the present invention is real
The control method for frequency conversion air conditioner of example offer, the temperature difference and indoor temperature change generated in case rate or room based on indoor temperature and design temperature are provided
Variable quantity of the interior temperature in previous detection cycle is controlled to the running frequency of compressor, after design temperature changes, room
Significant changes, and then running frequency will not occur for the variable quantity of interior rate of temperature change and indoor temperature in previous detection cycle
Increment size is also not in obvious disturbance, and therefore, even if current compressor running frequency is smaller, compressor operating frequency also will not
There are significant changes, hereby it is ensured that the stationarity of indoor temperature.
In general, the fan-out capability of convertible frequency air-conditioner is not only relevant with the running frequency of compressor, also with indoor fan and
The wind speed of outdoor fan is relevant, specifically, in the case where compressor operating frequency is certain, if indoor fan/outdoor fan
Wind speed it is higher, then the fan-out capability of convertible frequency air-conditioner is higher, and the change to indoor temperature is also bigger；If conversely, indoor fan/room
The wind speed of outer blower fan is lower, then the fan-out capability of convertible frequency air-conditioner is lower, and the change to indoor temperature is also smaller.Therefore, it is if indoor
The target wind speed of blower fan/outdoor fan changes, and (now the running frequency of compressor not yet changes, and is still a upper detection moment
Target operating frequency), the fan-out capability of convertible frequency air-conditioner namely change.Therefore, frequency conversion provided in an embodiment of the present invention is empty
Control method, influence of the wind speed of convertible frequency air-conditioner indoor fan or outdoor fan to air-conditioning fan-out capability can be taken into account,
More stablize so as to become frequency modulation fan-out capability, so that it is guaranteed that the stability of room temperature.
Specifically, in a kind of possible implementation, as shown in figure 3, convertible frequency air-conditioner control provided in an embodiment of the present invention
Method processed, in convertible frequency air-conditioner control device according to the first running frequency increment size and running frequency, obtain first object frequency
Before (i.e. step S106), it can also include：
S111, convertible frequency air-conditioner control device determine whether the target wind speed of indoor fan is changed.
Then, convertible frequency air-conditioner control device obtains first object frequency according to the first running frequency increment size and running frequency
Rate (i.e. step S106), can specifically include：
If the target wind speed of S106a, indoor fan is not changed, convertible frequency air-conditioner control device increases according to the first running frequency
Value and running frequency, obtain first object frequency；
If the target wind speed of S106b, indoor fan is changed, convertible frequency air-conditioner control device is according to indoor fan current goal
Wind speed, the first running frequency increment size and running frequency, obtain first object frequency.
Specifically, convertible frequency air-conditioner control device can obtain one first according to the first running frequency increment size and running frequency
Middle running frequency, it is compensated further according to the current wind speed of indoor fan, obtains first object frequency.Specifically, may be used
The wind speed of indoor fan is divided into several sections, each section corresponds to a penalty coefficient, and in order to reduce indoor fan pair
The influence of air-conditioning fan-out capability, penalty coefficient should reduce with the increase of wind speed.
Certainly, the method for above-mentioned calculating first object frequency is the possible realization side of one kind provided in an embodiment of the present invention
Formula, those of ordinary skill in the art it is to be appreciated that also have other possible implementations, the embodiment of the present invention in actual applications
This is not especially limited.
In addition, it should be noted that, do not have strict execution sequence between step S111 and step S104-S105, can
According to shown in Fig. 3, first carrying out step S104-S105, then step S111；Also step S111 can be first carried out, then performs step S104-
S105, the embodiment of the present invention are not especially limited to this.
Preferably, in order to more accurately describe influence of the wind speed of indoor fan to air-conditioning fan-out capability, room can considered
While inner blower current goal wind speed, previous target wind speed is taken into account in the lump, i.e., in above-mentioned implementation, can be used down
State step S106b ' replacement steps S106b：
If the target wind speed of S106b ', indoor fan is changed, convertible frequency air-conditioner control device is according to the current mesh of indoor fan
Wind speed, the previous target wind speed of indoor fan, temperature approach, indoor temperature change generated in case rate or indoor temperature are marked in previous detection cycle
Variable quantity and running frequency, determine the first running frequency increment size.
In specific implementation, there is various ways, for example, can first according to the first running frequency increment size and running frequency,
A middle running frequency is obtained, it is compensated further according to the current wind speed of indoor fan and previous target wind speed, obtains first
Target frequency.Specifically, can be corresponding with penalty coefficient according to the ratio of two target wind speeds and the wind speed ratio to prestore
Relation, it is determined that corresponding penalty coefficient, is compensated to middle running frequency using penalty coefficient, obtain target frequency, this hair
Bright embodiment is not especially limited to this.
In alternatively possible implementation, as shown in figure 4, step S111, then frequency conversion can be performed before step S105
Variable quantity and fortune of the air conditioning control device according to temperature approach, indoor temperature change generated in case rate or indoor temperature in previous detection cycle
Line frequency, the first running frequency increment size (i.e. step S105) is determined, can specifically be included：
If the target wind speed of S105c, indoor fan is not changed, convertible frequency air-conditioner control device is according to temperature approach, Indoor Temperature
The variable quantity and running frequency of rate of change or indoor temperature in previous detection cycle are spent, determines the first running frequency increment
Value.
If the target wind speed of S105d, indoor fan is changed, convertible frequency air-conditioner control device is according to temperature approach, indoor temperature
Variable quantity, running frequency and the indoor fan current goal wind speed of rate of change or indoor temperature in previous detection cycle, really
Fixed first running frequency increment size.
, wherein it is desired to explanation, does not have strict execution sequence between step S111 and step S104, can be according to figure
Shown in 4, step S104, then step S111 are first carried out；Also step S111 can be first carried out, then performs step S104, the present invention is implemented
Example is not especially limited to this.
In another implementation of the embodiment of the present invention, as shown in figure 5, in convertible frequency air-conditioner control device according to the first fortune
Line frequency increment size and running frequency, before obtaining first object frequency (i.e. step S106), it can also include：
S112, convertible frequency air-conditioner control device determine whether the target wind speed of outdoor fan is changed.
Then, convertible frequency air-conditioner control device obtains first object frequency according to the first running frequency increment size and running frequency
Rate (i.e. step S106), can specifically include：
If the target wind speed of S106c, outdoor fan is not changed, convertible frequency air-conditioner control device increases according to the first running frequency
Value and running frequency, obtain first object frequency.
If the target wind speed of S106d, outdoor fan is changed, convertible frequency air-conditioner control device is according to outdoor fan current goal
Wind speed, the first running frequency increment size and running frequency, obtain first object frequency.
Specific implementation process refers to the foregoing explanation about step S106b, and here is omitted.
Preferably, in order to more accurately describe influence of the wind speed of outdoor fan to air-conditioning fan-out capability, can consider to work as
While preceding target wind speed, previous target wind speed is taken into account in the lump, i.e., in above-mentioned implementation, following step can be used
S106d ' replacement steps S106d：
If the target wind speed of S106d ', indoor fan is changed, convertible frequency air-conditioner control device is according to the current mesh of outdoor fan
Wind speed, the previous target wind speed of indoor fan, temperature approach, indoor temperature change generated in case rate or indoor temperature are marked in previous detection cycle
Variable quantity and running frequency, determine the first running frequency increment size.
Specific implementation process refers to the foregoing explanation about step S106b ', and here is omitted.
In another implementation of the embodiment of the present invention, as shown in fig. 6, step S112 can be performed before step S105,
Then variable quantity of the convertible frequency air-conditioner control device according to temperature approach, indoor temperature change generated in case rate or indoor temperature in previous detection cycle
And running frequency, the first running frequency increment size (i.e. step S105) is determined, can specifically be included：
If the target wind speed of S105e, outdoor fan is not changed, convertible frequency air-conditioner control device is according to temperature approach, Indoor Temperature
The variable quantity and running frequency of rate of change or indoor temperature in previous detection cycle are spent, determines the first running frequency increment
Value.
If the target wind speed of S105f, outdoor fan is changed, convertible frequency air-conditioner control device is according to temperature approach, indoor temperature
Variable quantity, running frequency and the indoor fan of rate of change or indoor temperature in previous detection cycle are at the current detection moment
Wind speed, determine the first running frequency increment size.
It is readily appreciated by a person skilled in the art that if indoor temperature is back and forth shaken around design temperature, convertible frequency air-conditioner
Control device will carry out frequent switching between quick control stage and stability contorting stage, be unfavorable for the stable operation of air-conditioning.
In order to avoid this phenomenon, a control return difference can be set, i.e. control method for frequency conversion air conditioner provided in an embodiment of the present invention can be with
Including：
At the subsequent detection moment：
If the absolute value of indoor temperature and the temperature approach of design temperature approaches predetermined threshold value from large to small, still with temperature approach
It is that condition judgment performs the stability contorting stage or quickly controls the stage that whether absolute value, which is less than predetermined threshold value,；
It is default so that whether the absolute value of temperature approach is less than first if the absolute value of temperature approach, which changes from small to big, approaches predetermined threshold value
Threshold value is that condition judgment performs the stability contorting stage or quickly controls the stage.
Wherein, first predetermined threshold value be the predetermined threshold value with control return difference and, first predetermined threshold value summary
More than the predetermined threshold value.
In the prior art, the running frequency increment size of compressor be according to the temperature difference of current indoor temperature and design temperature with
And variable quantity acquisition of the temperature difference in controlling cycle, it is not related with current compressor running frequency, therefore, in compressor
In the case of running frequency is higher different with relatively low two kinds, if indoor temperature and the temperature difference of design temperature and the temperature difference are being controlled
Variable quantity in cycle processed is identical, and obtained running frequency increment size is i.e. identical.Therefore, load is lighter indoors for prior art
When, fluctuations in indoor temperature can be made larger, when load is heavier indoors, the change to indoor temperature is again slightly insufficient, causes interior
The time of temperature arrival design temperature greatly prolongs or indoor temperature is unable to reach design temperature.
And control method for frequency conversion air conditioner provided in an embodiment of the present invention is based on, when indoor temperature and the temperature approach of design temperature
Absolute value when being less than predetermined threshold value, i.e., when indoor temperature is closer to design temperature, the stability contorting stage is performed, according to interior
The variable quantity and pressure of temperature and the temperature approach of design temperature, indoor temperature change generated in case rate or indoor temperature in previous detection cycle
Contracting machine running frequency, determines running frequency increment size, and the change width of compressor operating frequency is controlled by running frequency increment size
Degree.In the stability contorting stage, due to it is determined that during running frequency increment size, introducing the actual motion of current compressor
Frequency running frequency, the actual motion frequency of running frequency increment size and current compressor is linked up, therefore, indoors
Load compared with it is light, compressor operating frequency is relatively low when, compressor operating frequency can control with relatively by running frequency increment size
Small changes in amplitude, so that it is guaranteed that its change to indoor temperature is smaller, finally make it that the fluctuation of indoor temperature is smaller, realization pair
The steady control of indoor temperature；And when load is heavier indoors, compressor operating frequency is higher, can by running frequency increment size
Compressor operating frequency is controlled with relatively large changes in amplitude, so that it is guaranteed that its change to indoor temperature is sufficiently large, finally
Ensure that indoor temperature can reach design temperature.
To sum up, based on control method for frequency conversion air conditioner provided in an embodiment of the present invention and device, when load is lighter indoors, energy
Enough reduce the fluctuation of indoor temperature, the steady control to indoor temperature is realized, when load is heavier indoors, it is ensured that indoor temperature
Design temperature can be reached.
Embodiment two,
The embodiment of the present invention provides a kind of convertible frequency air-conditioner control device 70, as shown in fig. 7, comprises：Detection unit 701, obtain
Take unit 702, determining unit 703 and execution unit 704.
Wherein, detection unit 701, for detecting indoor temperature according to default detection cycle.
Acquiring unit 702, for obtaining the temperature approach and indoor temperature change generated in case rate of current indoor temperature and design temperature
Or variable quantity of the indoor temperature in previous detection cycle.
Determining unit 703, for determining whether the absolute value of temperature approach is less than predetermined threshold value.
Execution unit 704, for if it is determined that unit 703 determine temperature approach absolute value be less than predetermined threshold value, perform stabilization
Control stage, the stability contorting stage include：
The running frequency of compressor is obtained, and according to temperature approach, indoor temperature change generated in case rate or indoor temperature in previous detection
Variable quantity and running frequency in cycle, determine the first running frequency increment size；
According to the first running frequency increment size and running frequency, first object frequency is obtained；
In next detection cycle, control compressor is run with first object frequency.
Further, however, it is determined that unit 703 determines that the absolute value of temperature approach is not less than predetermined threshold value, and execution unit 704 is also
For performing the quick control stage, the quick control stage includes：
According to the variable quantity of temperature approach and indoor temperature change generated in case rate or indoor temperature in previous detection cycle, it is determined that
Second running frequency increment size；
The running frequency of compressor is obtained, and according to running frequency and the second running frequency increment size, obtains the second target
Frequency；
In next detection cycle, control compressor is run with the second target frequency.
Further, in convertible frequency air-conditioner control device 70 provided in an embodiment of the present invention, determining unit 703 can also be used
In：
In execution unit 704 according to the first running frequency increment size and running frequency, before obtaining first object frequency,
Determine whether the target wind speed of indoor fan is changed.
Then, execution unit 704 specifically can be used for：
If the target wind speed of indoor fan is not changed, according to the first running frequency increment size and running frequency, obtain
First object frequency；
If the wind speed of indoor fan is changed, according to indoor fan current goal wind speed, the first running frequency increment size with
And running frequency, obtain first object frequency.
Further, in convertible frequency air-conditioner control device 70 provided in an embodiment of the present invention, determining unit 703 can also be used
In：
In execution unit 704 according to the first running frequency increment size and running frequency, before obtaining first object frequency,
Determine whether the target wind speed of outdoor fan is changed.
Then, execution unit 704 specifically can be used for：
If the target wind speed of outdoor fan is not changed, according to the first running frequency increment size and running frequency, obtain
First object frequency；
If the target wind speed of outdoor fan is changed, according to outdoor fan current goal wind speed, the first running frequency increment
Value and running frequency, obtain first object frequency.
Further, in convertible frequency air-conditioner control device 70 provided in an embodiment of the present invention, determining unit 703 can also be used
In：
In execution unit 704 according to the first running frequency increment size and running frequency, before obtaining first object frequency,
Determine whether the target wind speed of indoor fan is changed.
Then, execution unit 704 specifically can be used for：
If the target wind speed of indoor fan is not changed, according to the first running frequency increment size and running frequency, obtain
First object frequency；
If the wind speed of indoor fan is changed, according to indoor fan current goal wind speed, the previous target wind speed of indoor fan,
First running frequency increment size and running frequency, obtain first object frequency.
Further, in convertible frequency air-conditioner control device 70 provided in an embodiment of the present invention, determining unit 703 can also be used
In：
In execution unit 704 according to the first running frequency increment size and running frequency, before obtaining first object frequency,
Determine whether the target wind speed of outdoor fan is changed.
Then, execution unit 704 specifically can be used for：
If the target wind speed of outdoor fan is not changed, according to the first running frequency increment size and running frequency, obtain
First object frequency；
If the target wind speed of outdoor fan is changed, according to outdoor fan current goal wind speed, the previous target of outdoor fan
Wind speed, the first running frequency increment size and running frequency, obtain first object frequency.
Specifically, the side being controlled using convertible frequency air-conditioner control device 70 provided in an embodiment of the present invention to convertible frequency air-conditioner
Method refers to the description of the embodiment of the present invention one, and here is omitted.
In the prior art, the running frequency increment size of compressor be according to the temperature difference of current indoor temperature and design temperature with
And variable quantity acquisition of the temperature difference in controlling cycle, it is not related with current compressor running frequency, therefore, in compressor
In the case of running frequency is higher different with relatively low two kinds, if indoor temperature and the temperature difference of design temperature and the temperature difference are being controlled
Variable quantity in cycle processed is identical, and obtained running frequency increment size is i.e. identical.Therefore, load is lighter indoors for prior art
When, fluctuations in indoor temperature can be made larger, when load is heavier indoors, the change to indoor temperature is again slightly insufficient, causes interior
The time of temperature arrival design temperature greatly prolongs or indoor temperature is unable to reach design temperature.
And convertible frequency air-conditioner control device provided in an embodiment of the present invention is based on, when indoor temperature and the temperature approach of design temperature
Absolute value when being less than predetermined threshold value, i.e., when indoor temperature is closer to design temperature, the stability contorting stage is performed, according to interior
The variable quantity and pressure of temperature and the temperature approach of design temperature, indoor temperature change generated in case rate or indoor temperature in previous detection cycle
Contracting machine running frequency, determines running frequency increment size, and the change width of compressor operating frequency is controlled by running frequency increment size
Degree.In the stability contorting stage, due to it is determined that during running frequency increment size, introducing the actual motion of current compressor
Frequency running frequency, the actual motion frequency of running frequency increment size and current compressor is linked up, therefore, indoors
Load compared with it is light, compressor operating frequency is relatively low when, compressor operating frequency can control with relatively by running frequency increment size
Small changes in amplitude, so that it is guaranteed that its change to indoor temperature is smaller, finally make it that the fluctuation of indoor temperature is smaller, realization pair
The steady control of indoor temperature；And when load is heavier indoors, compressor operating frequency is higher, can by running frequency increment size
Compressor operating frequency is controlled with relatively large changes in amplitude, so that it is guaranteed that its change to indoor temperature is sufficiently large, finally
Ensure that indoor temperature can reach design temperature.
To sum up, convertible frequency air-conditioner control device provided in an embodiment of the present invention, when load is lighter indoors, interior can be reduced
The fluctuation of temperature, the steady control to indoor temperature is realized, when load is heavier indoors, it is ensured that indoor temperature, which can reach, to be set
Constant temperature degree.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description,
, can be as needed and by above-mentioned function distribution only with the division progress of above-mentioned each functional module for example, in practical application
Completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, it is described above to complete
All or part of function.The specific work process of the system of foregoing description, device and unit, it may be referred to preceding method implementation
Corresponding process in example, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the module or
The division of unit, only a kind of division of logic function, can there are other dividing mode, such as multiple units when actually realizing
Or component can combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, institute
Display or the mutual coupling discussed or direct-coupling or communication connection can be by some interfaces, device or unit
INDIRECT COUPLING or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (12)
1. a kind of control method for frequency conversion air conditioner, it is characterised in that methods described includes：
Indoor temperature is detected according to default detection cycle；
At the current detection moment, temperature approach and indoor temperature change generated in case rate or the interior of acquisition current indoor temperature and design temperature
Variable quantity of the temperature in previous detection cycle, determines whether the absolute value of the temperature approach is less than predetermined threshold value；
If so, performing the stability contorting stage, the stability contorting stage includes：
The running frequency of compressor is obtained, and is existed according to the temperature approach, the indoor temperature change generated in case rate or the indoor temperature
Variable quantity and the running frequency in previous detection cycle, determine the first running frequency increment size；
According to the first running frequency increment size and the running frequency, first object frequency is obtained；
In next detection cycle, the compressor is controlled to be run with the first object frequency.
2. according to the method for claim 1, it is characterised in that methods described also includes：
If the absolute value of the temperature approach is not less than the predetermined threshold value, quick control stage, the quick control stage are performed
Including：
According to the change of the temperature approach and the indoor temperature change generated in case rate or the indoor temperature in previous detection cycle
Change amount, determine the second running frequency increment size；
The running frequency of the compressor is obtained, and according to the running frequency and the second running frequency increment size, is obtained
Second target frequency；
In next detection cycle, the compressor is controlled to be run with second target frequency.
3. method according to claim 1 or 2, it is characterised in that described according to the first running frequency increment size
And the running frequency, before obtaining first object frequency, methods described also includes：
Determine whether the target wind speed of indoor fan is changed；
It is described that first object frequency is obtained according to the first running frequency increment size and the running frequency, including：
If it is not, according to the first running frequency increment size and the running frequency, first object frequency is obtained；
If so, according to the indoor fan current goal wind speed, the first running frequency increment size and the running frequency,
Obtain first object frequency.
4. method according to claim 1 or 2, it is characterised in that described according to the first running frequency increment size
And the running frequency, before obtaining first object frequency, methods described also includes：
Determine whether the target wind speed of outdoor fan is changed；
It is described that first object frequency is obtained according to the first running frequency increment size and the running frequency, including：
If it is not, according to the first running frequency increment size and the running frequency, first object frequency is obtained；
If so, according to the outdoor fan current goal wind speed, the first running frequency increment size and the running frequency,
Obtain first object frequency.
5. method according to claim 1 or 2, it is characterised in that described according to the temperature approach, the indoor temperature
The variable quantity and the running frequency of rate of change or the indoor temperature in previous detection cycle, determine the first running frequency
Before increment size, methods described also includes：
Determine whether the target wind speed of indoor fan is changed；
The change according to the temperature approach, the indoor temperature change generated in case rate or the indoor temperature in previous detection cycle
Amount and the running frequency, determine the first running frequency increment size, including：
If it is not, the change according to the temperature approach, the indoor temperature change generated in case rate or the indoor temperature in previous detection cycle
Change amount and the running frequency, determine the first running frequency increment size；
If so, according to the indoor fan current goal wind speed, the previous target wind speed of the indoor fan, the temperature approach, institute
The variable quantity and the running frequency of indoor temperature change generated in case rate or the indoor temperature in previous detection cycle are stated, determines
One running frequency increment size.
6. method according to claim 1 or 2, it is characterised in that described according to the temperature approach, the indoor temperature
The variable quantity and the running frequency of rate of change or the indoor temperature in previous detection cycle, determine the first running frequency
Before increment size, methods described also includes：
Determine whether the target wind speed of outdoor fan is changed；
The change according to the temperature approach, the indoor temperature change generated in case rate or the indoor temperature in previous detection cycle
Amount and the running frequency, determine the first running frequency increment size, including：
If it is not, the change according to the temperature approach, the indoor temperature change generated in case rate or the indoor temperature in previous detection cycle
Change amount and the running frequency, determine the first running frequency increment size；
If so, according to the outdoor fan current goal wind speed, the previous target wind speed of the outdoor fan, the temperature approach, institute
The variable quantity and the running frequency of indoor temperature change generated in case rate or the indoor temperature in previous detection cycle are stated, determines
One running frequency increment size.
7. a kind of convertible frequency air-conditioner control device, it is characterised in that described device includes：Detection unit, acquiring unit, determining unit
And execution unit；
The detection unit, for detecting indoor temperature according to default detection cycle；
The acquiring unit, for obtaining temperature approach and indoor temperature change generated in case rate or the room of current indoor temperature and design temperature
Variable quantity of the interior temperature in previous detection cycle；
The determining unit, for determining whether the absolute value of the temperature approach is less than predetermined threshold value；
The execution unit, if the absolute value for determining the temperature approach for the determining unit is less than the predetermined threshold value, hold
Row stability contorting stage, the stability contorting stage include：
The running frequency of compressor is obtained, and is existed according to the temperature approach, the indoor temperature change generated in case rate or the indoor temperature
Variable quantity and the running frequency in previous detection cycle, determine the first running frequency increment size；
According to the first running frequency increment size and the running frequency, first object frequency is obtained；
In next detection cycle, the compressor is controlled to be run with the first object frequency.
8. device according to claim 7, it is characterised in that the execution unit is additionally operable to：
If the determining unit determines that the absolute value of the temperature approach is not less than the predetermined threshold value, the quick control stage is performed,
The quick control stage includes：
According to the change of the temperature approach and the indoor temperature change generated in case rate or the indoor temperature in previous detection cycle
Change amount, determine the second running frequency increment size；
The running frequency of compressor is obtained, and according to the running frequency and the second running frequency increment size, obtains second
Target frequency；
In next detection cycle, the compressor is controlled to be run with second target frequency.
9. the device according to claim 7 or 8, it is characterised in that the determining unit is additionally operable to：
In the execution unit according to the first running frequency increment size and the running frequency, first object frequency is obtained
Before, determine whether the target wind speed of indoor fan is changed；
The execution unit is specifically used for：
If the target wind speed of the indoor fan is not changed, according to the first running frequency increment size and the operation frequency
Rate, obtain first object frequency；
If the target wind speed of the indoor fan is changed, according to the indoor fan current goal wind speed, first operation
Frequency increment value and the running frequency, obtain first object frequency.
10. the device according to claim 7 or 8, it is characterised in that the determining unit is additionally operable to：
In the execution unit according to the first running frequency increment size and the running frequency, first object frequency is obtained
Before, determine whether the target wind speed of outdoor fan is changed；
The execution unit is specifically used for：
If the target wind speed of the outdoor fan is not changed, according to the first running frequency increment size and the operation frequency
Rate, obtain first object frequency；
If the target wind speed of the outdoor fan is changed, according to the outdoor fan current goal wind speed, first operation
Frequency increment value and the running frequency, obtain first object frequency.
11. the device according to claim 7 or 8, it is characterised in that the determining unit is additionally operable to：
In the execution unit according to the temperature approach, the indoor temperature change generated in case rate or the indoor temperature in previous detection week
Variable quantity and the running frequency in phase, before determining the first running frequency increment size, determine the target wind of indoor fan
Whether speed is changed；
The execution unit is specifically used for：
If the target wind speed of the indoor fan is not changed, according to the temperature approach, the indoor temperature change generated in case rate or described
Variable quantity and the running frequency of the indoor temperature in previous detection cycle, determine the first running frequency increment size；
If the target wind speed of the indoor fan is changed, according to the indoor fan current goal wind speed, the indoor fan
The change of previous target wind speed, the temperature approach, the indoor temperature change generated in case rate or the indoor temperature in previous detection cycle
Change amount and the running frequency, determine the first running frequency increment size.
12. the device according to claim 7 or 8, it is characterised in that the determining unit is additionally operable to：
In the execution unit according to the temperature approach, the indoor temperature change generated in case rate or the indoor temperature in previous detection week
Variable quantity and the running frequency in phase, before determining the first running frequency increment size, determine the target wind of outdoor fan
Whether speed is changed；
The execution unit is specifically used for：
If the target wind speed of the outdoor fan is not changed, according to the temperature approach, the indoor temperature change generated in case rate or described
Variable quantity and the running frequency of the indoor temperature in previous detection cycle, determine the first running frequency increment size；
If the target wind speed of the outdoor fan is changed, according to the outdoor fan current goal wind speed, the outdoor fan
The change of previous target wind speed, the temperature approach, the indoor temperature change generated in case rate or the indoor temperature in previous detection cycle
Change amount and the running frequency, determine the first running frequency increment size.
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| CN201510642048.7A CN105241007B (en) | 2015-09-29 | 2015-09-29 | A kind of control method for frequency conversion air conditioner and device |
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| CN105864983B (en) * | 2016-04-27 | 2019-05-31 | 青岛海尔空调器有限总公司 | A kind of air conditioning control method |
| CN105953369B (en) * | 2016-05-18 | 2019-08-09 | 海信（广东）空调有限公司 | A kind of control method for frequency conversion air conditioner and device |
| CN106091259B (en) * | 2016-06-17 | 2018-11-02 | 珠海格力电器股份有限公司 | It is a kind of for the control method of air-conditioning, device and air-conditioning |
| CN106196788B (en) * | 2016-07-14 | 2020-05-26 | 海信（山东）空调有限公司 | Frequency control method and device for air conditioner compressor |
| CN106524407B (en) * | 2016-10-28 | 2019-07-19 | 美的集团武汉制冷设备有限公司 | Air-conditioner control method, device and air conditioner based on wearable device |
| CN106766008A (en) * | 2017-02-23 | 2017-05-31 | 广东美的暖通设备有限公司 | The control method of blower fan gear, device and air-conditioner |
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| CN107490126A (en) * | 2017-07-26 | 2017-12-19 | 珠海格力电器股份有限公司 | The frequency adjustment method and device of multi-compressor system |
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