CN107763886A - The control method of air conditioner, the control system of air conditioner and air conditioner - Google Patents
The control method of air conditioner, the control system of air conditioner and air conditioner Download PDFInfo
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Abstract
The invention provides a kind of control method of air conditioner, the control system of air conditioner and air conditioner, wherein, the control method of air conditioner includes：Judge compressor whether in limit frequency working condition；If compressor is in limit frequency working condition, according to the total energy of interior machine need or compressor limit frequency before working frequency control run any compressor or whole compressors.The control method of air conditioner provided by the invention, when compressor is in limit frequency working condition, according to the total energy of interior machine need or compressor limit frequency before working frequency control run any compressor or whole compressors, so that air conditioner can more adapt to needing for indoor set after frequency is limited, solve the problems, such as more outer machine parallel runnings or an outer machine has and need to can distributed during multiple compressors.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of control of the control method of air conditioner, air conditioner
System and air conditioner.
Background technology
When the outer machine parallel connection of more of multiple on-line system is a system, the unlatching of every outdoor unit is typically according to the energy of indoor set
Power demand controls, and when indoor unit capability demand is small just drives an outer machine, is just run when indoor unit capability demand is big all outer
Machine.But judge to control outdoor unit start and stop it is possible that running effect difference or operation according only to indoor unit capability demand
Situation about not saving, for example, work as when running outer machine most high frequency refrigeration according to interior machine ability need outdoor environment temperature it is too high or
Person's heat exchange is poor, and easy appearance limit frequency is run when pressure high current is big, and the ability of outer machine cannot meet indoor set after limit frequency
Needs, interior mechanism cold effect is just poor, influences the normal use of user and comfortable sexual experience.
Likewise, when one outer machine of multiple on-line system has multiple compressors, the unlatching per compressor is typically according to outdoor
The ability need of machine controls, and just opens a compressor when outdoor unit ability need is small, is just transported when outdoor unit ability need is big
The multiple compressors of row.But judge to control start/stop of compressor it is possible that running effect according only to outdoor unit ability need
The situation that difference or operation do not save, for example run according to outer machine ability need when a compressor most high frequency freezes and work as outdoor ring
Border temperature is too high or heat exchange is poor, easily occurs limit frequency when pressure high current is big and runs, limits frequency the latter compressor operating
Ability cannot meet the needs of indoor set, interior mechanism cold effect is just poor, influences the normal use and comfortableness of user
Experience.
The content of the invention
At least one in order to solve the above-mentioned technical problem, the embodiment of the first aspect of the present invention proposes a kind of air conditioner
Control method.
A kind of the second aspect of the present invention embodiment, it is also proposed that control system of air conditioner.
A kind of the third aspect of the present invention embodiment, it is also proposed that air conditioner.
In view of this, embodiment according to the first aspect of the invention, the present invention propose a kind of controlling party of air conditioner
Method, air conditioner include interior machine and at least one outer machine, and at least one outer machine includes multiple compressors, the control method bag of air conditioner
Include：Judge compressor whether in limit frequency working condition；If compressor be in limit frequency working condition, according to interior machine total energy need or
Working frequency control before compressor limit frequency runs any compressor or whole compressors.
The control method of air conditioner provided by the invention, frequency working condition is limited when compressor is in, according to the total energy of interior machine
Working frequency control before need or compressor limit frequency runs any compressor or whole compressors so that air conditioner energy after frequency is limited
It is enough more to adapt to needing for indoor set, solve more outer machine parallel runnings or an outer machine has and can need to distribute during multiple compressors
The problem of.Make multiple compressors or more outer machine low-frequency operations equivalent to compressor output is increased after such as limiting frequency, by original
An outer machine to all outer machines operations, while also correspond to increase heat exchanger area, mechanism cold or heating effect in solution
The problem of poor, lift the comfort of user；Or select only to run an outer machine or a compressor after limit frequency, meeting
Energy consumption is also reduced as much as possible while needing.
In addition, the control method of the air conditioner in above-described embodiment provided by the invention can also have following supplementary technology
Feature：
In any of the above-described technical scheme, it is preferable that need to control any compressor of operation or whole according to the total energy of interior machine
The step of compressor, specifically include：If the total energy of interior machine, which need to be more than first, which to be preset, can need to be worth, control runs whole compressors；If
The total energy of interior machine, which need to be less than second, which to be preset, can need to be worth, and control runs any compressor；Wherein, the first default energy need to be worth more than second
It is default to need to be worth.
In the technical scheme, if the total energy of interior machine need to be more than first it is default can need to be worth, illustrate now can need larger, need
Run whole compressors and realize bigger refrigeration or heating capacity, ensure the working effect of air conditioner；If the total energy of interior machine needs small
In second it is default can need to be worth, illustrate now can need it is smaller, can only run a compressor (or an outer machine), so can
Enough ensure the enough refrigeration of air conditioner or heating capacity, the energy consumption of air conditioner can be reduced as much as possible again.
In any of the above-described technical scheme, it is preferable that the working frequency control before frequency is limited according to compressor and runs any pressure
The step of contracting machine or whole compressors, specifically include：If the working frequency before compressor limit frequency is more than the first predeterminated frequency, control
Run whole compressors；If the working frequency before compressor limit frequency is less than the second predeterminated frequency, control runs any compressor；Its
In, the first predeterminated frequency is more than the second predeterminated frequency.
In the technical scheme, if the working frequency before compressor limit frequency is more than the first predeterminated frequency, pressed before illustrating limit frequency
Contracting machine need larger output could meet in machine the needs of, therefore select the whole compressors of control to be transported with low frequency after frequency is limited
OK, refrigeration or heating capacity after air conditioner limit frequency are thus lifted；It is default that if the working frequency before compressor limit frequency is less than second
Frequency, illustrate limit frequency before compressor needs it is less output just can meet in machine the needs of, therefore after frequency is limited select control transport
Any compressor (or any outer machine) of row, can either so ensure the enough refrigeration of air conditioner or heating capacity, and can use up again can
Energy ground reduces the energy consumption of air conditioner.
In any of the above-described technical scheme, it is preferable that also include：If compressor is not on limiting frequency working condition and interior machine
Total energy need to be more than the 3rd it is default can need to be worth, control runs whole compressors；If compressor be not on limit frequency working condition and
The total energy of interior machine, which need to be less than the 4th, which to be preset, can need to be worth, and control runs any compressor；Wherein, the 3rd default energy need to be worth more than the 4th
It is default to need to be worth.
In the technical scheme, when compressor is not on limiting frequency working condition, usually, now air conditioner is in one
The normal working condition of kind, it need to need to be worth with the 3rd default energy by the total energy of machine in comparison or the 4th default energy need to be worth selection standard-sized sheet
Or only drive the compressor of part or outer machine, meet under conditions of the reasonable energy consumption in machine energy need.
Wherein, under optimum condition the 4th it is default need to can be worth default more than first can need to be worth, so that reduced after limit frequency outer
Machine (or compressor) singly opens/standard-sized sheet switching when can need be worth, make outdoor unit can also standard-sized sheet and low frequency fortune in taking for very little
OK, the refrigeration or heating capacity of air conditioner are improved.
In any of the above-described technical scheme, it is preferable that judge the step of whether compressor is in limit frequency working condition, specifically
Including：Detect the electric current of environment temperature, the pressure at expulsion of compressor and compressor；If environment temperature is more than preset temperature, or pressure
The pressure at expulsion of contracting machine is more than preset pressure, or the electric current of compressor is more than predetermined current, then judges that compressor is in limit frequency work
Make state.
In the technical scheme, air-conditioning can be judged according to the electric current of environment temperature, the pressure at expulsion of compressor and compressor
Whether device the compressor or outer machine that reselection is opened afterwards, can be met in limit frequency working condition by above-mentioned condition
Judge the accuracy of the working condition of air conditioner and compressor, find air conditioner or compressor whether in limit frequency work shape early
State.
In any of the above-described technical scheme, it is preferable that also include：Judge compressor whether in limit frequency every preset duration
Working condition.
In the technical scheme, periodically detect and whether judge air conditioner or compressor in limiting frequency working condition,
With ensure air conditioner can in time, efficiently adjustment work state, meet the actual demand of user, lift usage experience.Wherein
Preset duration is preferably 5 to 30 minutes.
The embodiment of second aspect of the present invention additionally provides a kind of control system of air conditioner, and air conditioner is including interior machine and extremely
A few outer machine, at least one outer machine include multiple compressors, and the control system of air conditioner includes：Judging unit, for judging
Whether compressor is in limit frequency working condition；Control unit, if limit frequency working condition is in for compressor, according to the total of interior machine
Can need or compressor limit frequency before working frequency control run any compressor or whole compressors.
The control system of air conditioner provided by the invention, frequency working condition is limited when compressor is in, according to the total energy of interior machine
Working frequency control before need or compressor limit frequency runs any compressor or whole compressors so that air conditioner energy after frequency is limited
It is enough more to adapt to needing for indoor set, solve more outer machine parallel runnings or an outer machine has and can need to distribute during multiple compressors
The problem of.Make multiple compressors or more outer machine low-frequency operations equivalent to compressor output is increased after such as limiting frequency, by original
An outer machine to all outer machines operations, while also correspond to increase heat exchanger area, mechanism cold or heating effect in solution
The problem of poor, lift the comfort of user；Or select only to run an outer machine or a compressor after limit frequency, meeting
Energy consumption is also reduced as much as possible while needing.
In addition, the control system of the air conditioner in above-described embodiment provided by the invention can also have following supplementary technology
Feature：
In the above-mentioned technical solutions, it is preferable that if the total energy that control unit is specifically used for interior machine need to be more than the first default energy
Need to be worth, control runs whole compressors；If the total energy that control unit is specifically used for interior machine default less than second can need to need to be worth, control
Run any compressor；Wherein, the first default energy need to be worth to preset more than second and can need to be worth.
In the technical scheme, if the total energy of interior machine need to be more than first it is default can need to be worth, illustrate now can need larger, need
Run whole compressors and realize bigger refrigeration or heating capacity, ensure the working effect of air conditioner；If the total energy of interior machine needs small
In second it is default can need to be worth, illustrate now can need it is smaller, can only run a compressor (or an outer machine), so can
Enough ensure the enough refrigeration of air conditioner or heating capacity, the energy consumption of air conditioner can be reduced as much as possible again.
In any of the above-described technical scheme, it is preferable that if control unit is specifically used for the working frequency before compressor limit frequency
More than the first predeterminated frequency, control runs whole compressors；If control unit is specifically used for the working frequency before compressor limit frequency
Less than the second predeterminated frequency, control runs any compressor；Wherein, the first predeterminated frequency is more than the second predeterminated frequency.
In the technical scheme, if the working frequency before compressor limit frequency is more than the first predeterminated frequency, pressed before illustrating limit frequency
Contracting machine need larger output could meet in machine the needs of, therefore select the whole compressors of control to be transported with low frequency after frequency is limited
OK, refrigeration or heating capacity after air conditioner limit frequency are thus lifted；It is default that if the working frequency before compressor limit frequency is less than second
Frequency, illustrate limit frequency before compressor needs it is less output just can meet in machine the needs of, therefore after frequency is limited select control transport
Any compressor (or any outer machine) of row, can either so ensure the enough refrigeration of air conditioner or heating capacity, and can use up again can
Energy ground reduces the energy consumption of air conditioner.
In any of the above-described technical scheme, it is preferable that worked if control unit is not on limit frequency specifically for compressor
State and the total energy of interior machine, which need to be more than the 3rd, which to be preset, can need to be worth, and control runs whole compressors；If control unit is specifically used for pressure
Contracting machine is not on limiting frequency working condition and the total energy of interior machine default less than the 4th can need to need to be worth, and control runs any compressor；
Wherein, the 3rd default energy need to be worth to preset more than the 4th and can need to be worth.
In the technical scheme, when compressor is not on limiting frequency working condition, usually, now air conditioner is in one
The normal working condition of kind, it need to need to be worth with the 3rd default energy by the total energy of machine in comparison or the 4th default energy need to be worth selection standard-sized sheet
Or only drive the compressor of part or outer machine, meet under conditions of the reasonable energy consumption in machine energy need.
Wherein, under optimum condition the 4th it is default need to can be worth default more than first can need to be worth, so that reduced after limit frequency outer
Machine (or compressor) singly opens/standard-sized sheet switching when can need be worth, make outdoor unit can also standard-sized sheet and low frequency fortune in taking for very little
OK, the refrigeration or heating capacity of air conditioner are improved.
In any of the above-described technical scheme, it is preferable that also include：Detection unit, for detecting environment temperature, compressor
The electric current of pressure at expulsion and compressor；If judging unit is more than preset temperature, or the exhaust of compressor specifically for environment temperature
Pressure is more than preset pressure, or the electric current of compressor is more than predetermined current, then judges that compressor is in limit frequency working condition.
In the technical scheme, air-conditioning can be judged according to the electric current of environment temperature, the pressure at expulsion of compressor and compressor
Whether device the compressor or outer machine that reselection is opened afterwards, can be met in limit frequency working condition by above-mentioned condition
Judge the accuracy of the working condition of air conditioner and compressor, find air conditioner or compressor whether in limit frequency work shape early
State.
In any of the above-described technical scheme, it is preferable that judging unit is additionally operable to whether judge compressor every preset duration
In limit frequency working condition.
In the technical scheme, periodically detect and whether judge air conditioner or compressor in limiting frequency working condition,
With ensure air conditioner can in time, efficiently adjustment work state, meet the actual demand of user, lift usage experience.Wherein
Preset duration is preferably 5 to 30 minutes.
The embodiment of third aspect present invention additionally provides a kind of air conditioner, including：Interior machine；At least one outer machine, at least
One outer machine includes multiple compressors；And the control system of the air conditioner of second aspect of the present invention embodiment.
Air conditioner provided by the invention, by using the control system of the air conditioner of second aspect of the present invention embodiment, solution
Certainly more outer machine parallel runnings or an outer machine have the problem of need to being distributed during multiple compressors, as made multiple compressions after limiting frequency
Machine or more outer machine low-frequency operations export equivalent to compressor is increased, and are run by an original outer machine to all outer machines,
Also correspond to increase heat exchanger area simultaneously, solve the problems, such as in mechanism cold or heating effect difference, the use for lifting user relaxes
Adaptive；Or select only to run an outer machine or a compressor after limit frequency, also reduce as much as possible while meeting and can need
Energy consumption.
The additional aspect and advantage of the present invention will become obvious in following description section, or the practice by the present invention
Recognize.
Brief 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 is the schematic flow sheet of the control method of the air conditioner of one embodiment of the present of invention；
Fig. 2 is the schematic flow sheet of the control method of the air conditioner of an alternative embodiment of the invention；
Fig. 3 is the schematic flow sheet of the control method of the air conditioner of yet another embodiment of the present invention；
Fig. 4 is the schematic block diagram of the control system of the air conditioner of one embodiment of the present of invention.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, 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 different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
The control method and air-conditioning of air conditioner described according to some embodiments of the invention are described referring to Fig. 1 to Fig. 4
The control system of device.
As shown in figure 1, the schematic flow sheet of the control method of the air conditioner of one embodiment of the present of invention, the control method
Available for air conditioner is controlled, air conditioner includes interior machine and at least one outer machine, and at least one outer machine includes multiple compressors, the sky
The control method of device is adjusted to comprise the following steps：
Step S102, judge that compressor whether in limit frequency working condition, enters step if the result judged is is
S104, otherwise then return to step S102；
Step S104, according to the total energy of interior machine need or compressor limit frequency before working frequency control run any compressor or
Whole compressors.
In this embodiment, when compressor be in limit frequency working condition, according to interior machine total energy need or compressor limit frequency before
Working frequency control run any compressor or whole compressors so that air conditioner can more adapt to indoor set after frequency is limited
Can need, solve the problems, such as more outer machine parallel runnings or an outer machine have and need to can distributed during multiple compressors.After such as limiting frequency
Make multiple compressors or more outer machine low-frequency operations equivalent to compressor output is increased, by an original outer machine to all
Outer machine operation, while also correspond to increase heat exchanger area, solve the problems, such as in mechanism cold or heating effect difference, lift user
Comfort；Or select only to run an outer machine or a compressor after limit frequency, also to the greatest extent may be used while meeting and can need
Reduce energy consumption energy.
As shown in Fig. 2 the schematic flow sheet of the control method of the air conditioner of one embodiment of the present of invention, the control method
Available for air conditioner is controlled, air conditioner includes interior machine and at least one outer machine, and at least one outer machine includes multiple compressors, the sky
The control method of device is adjusted to comprise the following steps：
Step S202, judge that compressor whether in limit frequency working condition, enters step if the result judged is is
S204, otherwise then enter step S212；
Step S204, in judgement the total energy of machine whether need to be more than first it is default can need to be worth, enter if the result judged is is
Enter step S206, otherwise then enter step S208；
Step S206, control run whole compressors；
Step S208, in judgement the total energy of machine whether need to be less than second it is default can need to be worth, enter if the result judged is is
Enter step S210, otherwise then return to step S204；
Step S210, control run any compressor；
Step S212, in judgement the total energy of machine whether need to be more than the 3rd it is default can need to be worth, enter if the result judged is is
Enter step S214, otherwise then enter step S216；
Step S214, control run whole compressors；
Step S216, in judgement the total energy of machine whether need to be less than the 4th it is default can need to be worth, enter if the result judged is is
Enter step S218, otherwise then return to step S204；
Step S218, control run any compressor.
In this embodiment, if the total energy of interior machine need to be more than first it is default can need to be worth, illustrate now can need it is larger, need to transport
The whole compressors of row realize bigger refrigeration or heating capacity, ensure the working effect of air conditioner；If the total energy of interior machine need to be less than
Second it is default can need to be worth, illustrate now can need it is smaller, can only run a compressor (or an outer machine), so can either
Ensure the enough refrigeration of air conditioner or heating capacity, the energy consumption of air conditioner can be reduced as much as possible again.
In addition, when compressor is not on limiting frequency working condition, usually, now air conditioner is in a kind of normal work
Make state, need to need to be worth with the 3rd default energy by the total energy of machine in comparison or the 4th default energy need to be worth selection standard-sized sheet or only open part
Compressor or outer machine, meet under conditions of the reasonable energy consumption in machine energy need.
Wherein, under optimum condition the 4th it is default need to can be worth default more than first can need to be worth, so that reduced after limit frequency outer
Machine (or compressor) singly opens/standard-sized sheet switching when can need be worth, make outdoor unit can also standard-sized sheet and low frequency fortune in taking for very little
OK, the refrigeration or heating capacity of air conditioner are improved.
As shown in figure 3, the schematic flow sheet of the control method of the air conditioner of one embodiment of the present of invention, the control method
Available for air conditioner is controlled, air conditioner includes interior machine and at least one outer machine, and at least one outer machine includes multiple compressors, the sky
The control method of device is adjusted to comprise the following steps：
Step S302, judge that compressor whether in limit frequency working condition, enters step if the result judged is is
S304, otherwise then enter step S312；
Step S304, judges whether the working frequency before compressor limit frequency is more than the first predeterminated frequency, if the result judged
To be then to enter step S306, otherwise then enter step S308；
Step S306, control run whole compressors；
Step S308, judges whether the working frequency before compressor limit frequency is less than the second predeterminated frequency, if the result judged
To be then to enter step S310, otherwise then return to step S304；
Step S310, control run any compressor；
Step S312, in judgement the total energy of machine whether need to be more than the 3rd it is default can need to be worth, enter if the result judged is is
Enter step S314, otherwise then enter step S316；
Step S314, control run whole compressors；
Step S316, in judgement the total energy of machine whether need to be less than the 4th it is default can need to be worth, enter if the result judged is is
Enter step S318, otherwise then return to step S304；
Step S318, control run any compressor.
In this embodiment, if the working frequency before compressor limit frequency is more than the first predeterminated frequency, compressed before illustrating limit frequency
Machine need larger output could meet in machine the needs of, therefore select after frequency is limited the whole compressors of control with low-frequency operation,
Thus refrigeration or heating capacity after air conditioner limit frequency are lifted；If the working frequency before compressor limit frequency is less than the second default frequency
Rate, illustrate limit frequency before compressor needs it is less output just can meet in machine the needs of, therefore after frequency is limited select control run
Any compressor (or any outer machine), can either so ensure the enough refrigeration of air conditioner or heating capacity, again can be as far as possible
Ground reduces the energy consumption of air conditioner.
In addition, when compressor is not on limiting frequency working condition, usually, now air conditioner is in a kind of normal work
Make state, need to need to be worth with the 3rd default energy by the total energy of machine in comparison or the 4th default energy need to be worth selection standard-sized sheet or only open part
Compressor or outer machine, meet under conditions of the reasonable energy consumption in machine energy need.
Wherein, under optimum condition the 4th it is default need to can be worth default more than first can need to be worth, so that reduced after limit frequency outer
Machine (or compressor) singly opens/standard-sized sheet switching when can need be worth, make outdoor unit can also standard-sized sheet and low frequency fortune in taking for very little
OK, the refrigeration or heating capacity of air conditioner are improved.
In one embodiment of the invention, it is preferable that judge the step of whether compressor is in limit frequency working condition, tool
Body includes：Detect the electric current of environment temperature, the pressure at expulsion of compressor and compressor；If environment temperature is more than preset temperature, or
The pressure at expulsion of compressor is more than preset pressure, or the electric current of compressor is more than predetermined current, then judges that compressor is in limit frequency
Working condition.
In this embodiment, air conditioner can be judged according to the electric current of environment temperature, the pressure at expulsion of compressor and compressor
Whether in limit frequency working condition, the compressor or outer machine that reselection is opened afterwards, can meet to sentence by above-mentioned condition
The accuracy of the working condition of disconnected air conditioner and compressor, find air conditioner or compressor whether in limit frequency work shape early
State.
In one embodiment of the invention, it is preferable that also include：Judge compressor whether in limit every preset duration
Frequency working condition.
In this embodiment, periodically detect and whether judge air conditioner or compressor in limiting frequency working condition, with
Ensure air conditioner can in time, efficiently adjustment work state, meet the actual demand of user, lifting usage experience.It is wherein pre-
If duration is preferably 5 to 30 minutes.
Present invention also offers a kind of control system 4 of air conditioner, as shown in figure 4, can be used for controlling air conditioner, air conditioner
Including interior machine and at least one outer machine, at least one outer machine includes multiple compressors, and the control system 4 of air conditioner includes：Judge
Unit 402, for judging compressor whether in limit frequency working condition；Control unit 404, if being in limit frequency work for compressor
Make state, according to the total energy of interior machine need or compressor limit frequency before working frequency control run any compressor or all compress
Machine.
The control system 4 of air conditioner provided by the invention, frequency working condition is limited when compressor is in, according to the total energy of interior machine
Working frequency control before need or compressor limit frequency runs any compressor or whole compressors so that air conditioner energy after frequency is limited
It is enough more to adapt to needing for indoor set, solve more outer machine parallel runnings or an outer machine has and can need to distribute during multiple compressors
The problem of.Make multiple compressors or more outer machine low-frequency operations equivalent to compressor output is increased after such as limiting frequency, by original
An outer machine to all outer machines operations, while also correspond to increase heat exchanger area, mechanism cold or heating effect in solution
The problem of poor, lift the comfort of user；Or select only to run an outer machine or a compressor after limit frequency, meeting
Energy consumption is also reduced as much as possible while needing.
In one embodiment of the invention, it is preferable that if as shown in figure 4, control unit 404 is specifically used for the total of interior machine
Default more than first it can need to can need to be worth, control runs whole compressors；If the total energy that control unit 404 is specifically used for interior machine need to be small
Being preset in second can need to be worth, and control runs any compressor；Wherein, the first default energy need to be worth to preset more than second and can need to be worth.
In this embodiment, if the total energy of interior machine need to be more than first it is default can need to be worth, illustrate now can need it is larger, need to transport
The whole compressors of row realize bigger refrigeration or heating capacity, ensure the working effect of air conditioner；If the total energy of interior machine need to be less than
Second it is default can need to be worth, illustrate now can need it is smaller, can only run a compressor (or an outer machine), so can either
Ensure the enough refrigeration of air conditioner or heating capacity, the energy consumption of air conditioner can be reduced as much as possible again.
In one embodiment of the invention, it is preferable that if as shown in figure 4, control unit 404 limits specifically for compressor
Working frequency before frequency is more than the first predeterminated frequency, and control runs whole compressors；If control unit 404 is specifically used for compressor
Working frequency before limit frequency is less than the second predeterminated frequency, and control runs any compressor；Wherein, the first predeterminated frequency is more than second
Predeterminated frequency.
In this embodiment, if the working frequency before compressor limit frequency is more than the first predeterminated frequency, compressed before illustrating limit frequency
Machine need larger output could meet in machine the needs of, therefore select after frequency is limited the whole compressors of control with low-frequency operation,
Thus refrigeration or heating capacity after air conditioner limit frequency are lifted；If the working frequency before compressor limit frequency is less than the second default frequency
Rate, illustrate limit frequency before compressor needs it is less output just can meet in machine the needs of, therefore after frequency is limited select control run
Any compressor (or any outer machine), can either so ensure the enough refrigeration of air conditioner or heating capacity, again can be as far as possible
Ground reduces the energy consumption of air conditioner.
In one embodiment of the invention, it is preferable that if as shown in figure 4, control unit 404 does not have specifically for compressor
There is the total energy in limit frequency working condition and interior machine default more than the 3rd can need to need to be worth, control runs whole compressors；Control is single
If member 404 is specifically used for, compressor is not on limiting frequency working condition and the total energy of interior machine default less than the 4th can need to need to be worth, and controls
System runs any compressor；Wherein, the 3rd default energy need to be worth to preset more than the 4th and can need to be worth.
In this embodiment, when compressor is not on limiting frequency working condition, usually, now air conditioner is in one kind
Normal working condition, by the total energy of machine in comparison need to the 3rd it is default need to can be worth or the 4th it is default need to can be worth selection standard-sized sheet or
Only drive the compressor of part or outer machine, meet under conditions of the reasonable energy consumption in machine energy need.
Wherein, under optimum condition the 4th it is default need to can be worth default more than first can need to be worth, so that reduced after limit frequency outer
Machine (or compressor) singly opens/standard-sized sheet switching when can need be worth, make outdoor unit can also standard-sized sheet and low frequency fortune in taking for very little
OK, the refrigeration or heating capacity of air conditioner are improved.
In one embodiment of the invention, it is preferable that as shown in figure 4, also including：Detection unit 406, for detecting ring
The electric current of border temperature, the pressure at expulsion of compressor and compressor；If judging unit 402 is specifically used for environment temperature and is more than default temperature
Degree, or the pressure at expulsion of compressor are more than preset pressure, or the electric current of compressor is more than predetermined current, then judges that compressor is in
Limit frequency working condition.
In this embodiment, air conditioner can be judged according to the electric current of environment temperature, the pressure at expulsion of compressor and compressor
Whether in limit frequency working condition, the compressor or outer machine that reselection is opened afterwards, can meet to sentence by above-mentioned condition
The accuracy of the working condition of disconnected air conditioner and compressor, find air conditioner or compressor whether in limit frequency work shape early
State.
In one embodiment of the invention, it is preferable that as shown in figure 4, judging unit 402 is additionally operable to every preset duration
Judge compressor whether in limit frequency working condition.
In this embodiment, periodically detect and whether judge air conditioner or compressor in limiting frequency working condition, with
Ensure air conditioner can in time, efficiently adjustment work state, meet the actual demand of user, lifting usage experience.It is wherein pre-
If duration is preferably 5 to 30 minutes.
Present invention also offers a kind of air conditioner, including：Interior machine；At least one outer machine, at least one outer machine include multiple
Compressor；And the control system 4 of the air conditioner of second aspect of the present invention embodiment.
Air conditioner provided by the invention, by using the control system 4 of the air conditioner of second aspect of the present invention embodiment, solution
Certainly more outer machine parallel runnings or an outer machine have the problem of need to being distributed during multiple compressors, as made multiple compressions after limiting frequency
Machine or more outer machine low-frequency operations export equivalent to compressor is increased, and are run by an original outer machine to all outer machines,
Also correspond to increase heat exchanger area simultaneously, solve the problems, such as in mechanism cold or heating effect difference, the use for lifting user relaxes
Adaptive；Or select only to run an outer machine or a compressor after limit frequency, also reduce as much as possible while meeting and can need
Energy consumption.
In the present invention, term " multiple " then refers to two or more, is limited unless otherwise clear and definite.Term " peace
The term such as dress ", " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected, can also
It is to be detachably connected, or is integrally connected；" connected " can be joined directly together, and can also be indirectly connected by intermediary.It is right
For one of ordinary skill in the art, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean to combine at least one reality that specific features, structure, material or the feature that the embodiment or example describe are contained in the present invention
Apply in example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term
Example.Moreover, description specific features, structure, material or feature can in any one or more embodiments or example with
Suitable mode combines.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (13)
1. a kind of control method of air conditioner, the air conditioner includes interior machine and at least one outer machine, at least one outer machine
Including multiple compressors, it is characterised in that the control method of the air conditioner includes：
Judge the compressor whether in limit frequency working condition；
If the compressor be in limit frequency working condition, according to the interior machine total energy need or the compressor limit frequency before work
FREQUENCY CONTROL runs any compressor or all compressor.
2. the control method of air conditioner according to claim 1, it is characterised in that can need to control according to the interior machine
The step of running any compressor or all compressor, specifically includes：
If the total energy of the interior machine default more than first can need to need to be worth, the whole compressors of control operation；
If the total energy of the interior machine, which need to be less than second, which to be preset, can need to be worth, control runs any compressor；
Wherein, the described first default energy need to be worth to preset more than described second and can need to be worth.
3. the control method of air conditioner according to claim 1, it is characterised in that the work before frequency is limited according to the compressor
Working frequency control runs the step of any compressor or all compressor, specifically includes：
If the working frequency before the compressor limit frequency is more than the first predeterminated frequency, the whole compressors of control operation；
If the working frequency before the compressor limit frequency is less than the second predeterminated frequency, control runs any compressor；
Wherein, first predeterminated frequency is more than second predeterminated frequency.
4. the control method of air conditioner according to any one of claim 1 to 3, it is characterised in that also include：
If the compressor is not on limiting frequency working condition and the total energy of the interior machine default more than the 3rd can need to need to be worth, control
The whole compressors of operation；
If the compressor is not on limiting frequency working condition and the total energy of the interior machine default less than the 4th can need to need to be worth, control
Run any compressor；
Wherein, the described 3rd default energy need to be worth to preset more than the described 4th and can need to be worth.
5. the control method of air conditioner according to any one of claim 1 to 3, it is characterised in that judge the compression
The step of whether machine is in limit frequency working condition, is specifically included：
Detect the electric current of environment temperature, the pressure at expulsion of the compressor and the compressor；
If the environment temperature is more than preset temperature, or the pressure at expulsion of the compressor is more than preset pressure, or the compression
The electric current of machine is more than predetermined current, then judges that the compressor is in limit frequency working condition.
6. the control method of air conditioner according to any one of claim 1 to 3, it is characterised in that also include：
Judge the compressor whether in limit frequency working condition every preset duration.
7. a kind of control system of air conditioner, the air conditioner includes interior machine and at least one outer machine, at least one outer machine
Including multiple compressors, it is characterised in that the control system of the air conditioner includes：
Judging unit, for judging the compressor whether in limit frequency working condition；
Control unit, if being in limit frequency working condition for the compressor, according to the total energy need of the interior machine or the compression
Working frequency control before machine limit frequency runs any compressor or all compressor.
8. the control system of air conditioner according to claim 7, it is characterised in that
If the total energy that described control unit is specifically used for the interior machine default more than first can need to need to be worth, described in control operation whole
Compressor；
If the total energy that described control unit is specifically used for the interior machine default less than second can need to need to be worth, control operation is any described
Compressor；
Wherein, the described first default energy need to be worth to preset more than described second and can need to be worth.
9. the control system of air conditioner according to claim 8, it is characterised in that
If described control unit is more than the first predeterminated frequency, control operation specifically for the working frequency before compressor limit frequency
All compressors；
If described control unit is less than the second predeterminated frequency, control operation specifically for the working frequency before compressor limit frequency
Any compressor；
Wherein, first predeterminated frequency is more than second predeterminated frequency.
10. the control system of the air conditioner according to any one of claim 7 to 9, it is characterised in that
If described control unit is specifically used for, the compressor is not on limiting frequency working condition and the total energy of the interior machine needs greatly
Being preset in the 3rd can need to be worth, the whole compressors of control operation；
If described control unit is specifically used for, the compressor is not on limiting frequency working condition and the total energy of the interior machine need to be small
Being preset in the 4th can need to be worth, and control runs any compressor；
Wherein, the described 3rd default energy need to be worth to preset more than the described 4th and can need to be worth.
11. the control system of the air conditioner according to any one of claim 7 to 9, it is characterised in that also include：
Detection unit, for detecting the electric current of environment temperature, the pressure at expulsion of the compressor and the compressor；
If the judging unit is more than preset temperature specifically for the environment temperature, or the pressure at expulsion of the compressor is more than
Preset pressure, or the electric current of the compressor are more than predetermined current, then judge that the compressor is in limit frequency working condition.
12. the control system of the air conditioner according to any one of claim 7 to 9, it is characterised in that
Whether the judging unit is additionally operable to judge the compressor in limit frequency working condition every preset duration.
A kind of 13. air conditioner, it is characterised in that including：
Interior machine；
At least one outer machine, at least one outer machine include multiple compressors；And
The control system of air conditioner as any one of claim 7 to 12.
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| CN107763886B (en) | 2020-09-22 |
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