CN108397872A - The control method and control circuit of air conditioner - Google Patents
The control method and control circuit of air conditioner Download PDFInfo
- Publication number
- CN108397872A CN108397872A CN201810007911.5A CN201810007911A CN108397872A CN 108397872 A CN108397872 A CN 108397872A CN 201810007911 A CN201810007911 A CN 201810007911A CN 108397872 A CN108397872 A CN 108397872A
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- current
- frequency
- outdoor environment
- environment temperature
- temperature
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of control method of air conditioner and control circuit, the method includes：Outdoor unit controls four-way valve according to present mode of operation so that the conducting direction of four-way valve and the refrigerant flow direction of the present mode of operation demand match；Outdoor unit control compressor is run with original frequency, and after meeting preset operating conditions, outdoor unit obtains current outdoor environment temperature, determines that current operation frequency, control compressor are run with the current operation frequency according to the current outdoor environment temperature.With the application of the invention, the control of air conditioner in the case of being communicated there is no connection between indoor unit and outdoor unit may be implemented.
Description
Technical field
The invention belongs to air-conditioning technique fields, specifically, being control method and the control for being related to a kind of air conditioner
Circuit.
Background technology
Transducer air conditioning is widely used because of the advantages that temperature control precision is high, energy saving.Existing transducer air conditioning is pressed
When contracting unit frequency controls, indoor unit is communicated with outdoor unit setting connection, the indoor real time temperature of indoor unit detection, according to reality
Shi Wendu and target temperature get indoor unit frequency control signal, which is sent to outdoor unit,
Outdoor unit controls compressor frequency according to the signal, realizes frequency modulation operation.
For transducer air conditioning, if connection is not present between indoor unit and outdoor unit, for example, to simplify air conditioner knot
Structure eliminates the connection between indoor unit and outdoor unit, and indoor unit cannot be communicated with outdoor unit by connection, the feelings
How to realize that the control of air conditioner, the control of especially compressor frequency, the prior art there is not yet solution under condition.
Invention content
The object of the present invention is to provide a kind of control method of air conditioner and control circuits, to realize indoor unit and outdoor unit
Between there is no connection communicated in the case of air conditioner control.
For achieving the above object, the control method of air conditioner provided by the invention gives reality using following technical proposals
It is existing：
A kind of air-conditioner control method, the method includes：
Outdoor unit controls four-way valve according to present mode of operation so that the conducting direction of four-way valve is needed with the present mode of operation
The refrigerant flow direction asked matches；
Outdoor unit control compressor is run with original frequency, and after meeting preset operating conditions, outdoor unit obtains current outdoor environment
Temperature determines that current operation frequency, control compressor are transported with the current operation frequency according to the current outdoor environment temperature
Row.
Method as described above, it is described that current operation frequency is determined according to the current outdoor environment temperature, it specifically includes：
It calculates the current outdoor environment temperature and sets the temperature difference of fiducial temperature, as current temperature difference, according to the known temperature difference
Value and the correspondence of running frequency and the current temperature difference determine running frequency corresponding with the current temperature difference, work
For the current operation frequency corresponding with the current outdoor environment temperature.
Alternatively, method as described above, described to determine current operation frequency according to the current outdoor environment temperature, specifically
Including：The temperature range belonging to the current outdoor environment temperature is determined, according to pair of known temperature range and running frequency
It should be related to, determine running frequency corresponding with the temperature range belonging to the current outdoor environment temperature, work as with described
The preceding corresponding current operation frequency of outdoor environment temperature.
Method as described above, the method further include：Indoor unit obtains the current total working electric current of complete machine of air conditioner, root
Complete machine protection process and/or outdoor unit breakdown judge process are executed according to the current total working electric current.
To realize that aforementioned invention purpose, air conditioner control circuit provided by the invention give reality using following technical proposals
It is existing：
A kind of control circuit of air conditioner, including indoor unit control circuit and outdoor unit control circuit, the outdoor unit control electricity
Road includes four-way valve control unit, VCU, and the four-way valve control unit, VCU is connect with the four-way valve being located outside in machine, is used for basis
Present mode of operation controls four-way valve so that the conducting direction of four-way valve and the refrigerant of the present mode of operation demand flow to phase
Matching；
The outdoor unit control circuit further includes having frequency control unit and outdoor environment temperature detection unit, the outdoor environment
For detecting current outdoor environment temperature, the frequency control unit is connect temperature detecting unit with compressor, for controlling pressure
Contracting machine is first run with original frequency, and after meeting preset operating conditions, current fortune is determined according to the current outdoor environment temperature
Line frequency, and control compressor and run with the current operation frequency.
Circuit as described above, the frequency control unit determine current operation frequency according to the current outdoor environment temperature
Rate specifically includes：It calculates the current outdoor environment temperature and sets the temperature difference of fiducial temperature, as current temperature difference, root
According to the correspondence and the current temperature difference of known temperature difference and running frequency, determination is corresponding with the current temperature difference
Running frequency, as the current operation frequency corresponding with the current outdoor environment temperature.
Alternatively, the frequency control unit determines current operation frequency according to the current outdoor environment temperature, it is specific to wrap
It includes：Determine the temperature range belonging to the current outdoor environment temperature, it is corresponding with running frequency according to known temperature range
Relationship determines corresponding with the temperature range belonging to current outdoor environment temperature running frequency, as with it is described currently
The corresponding current operation frequency of outdoor environment temperature.
Circuit as described above, the indoor unit control circuit further include having complete machine total working current detecting unit, are used for
The current total working electric current of complete machine is detected, the indoor unit control circuit executes complete machine protection also according to the current total working electric current
Process and/or outdoor unit breakdown judge process.
Compared with prior art, the advantages and positive effects of the present invention are：The control method of air conditioner provided by the invention
And control circuit, the commutation of four-way valve is controlled using outdoor unit, using outdoor unit according to outdoor environment temperature to compressor operating
Frequency is controlled, without being communicated between indoor unit and outdoor unit, can also realize air-conditioning system refrigerant correct cycles and
The control of compressor frequency, to realize communicated there is no connection between indoor unit and outdoor unit in the case of air-conditioning
The operation of device controls.
After the specific implementation mode of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Description of the drawings
Fig. 1 is the flow chart of control method one embodiment based on air conditioner of the present invention；
Fig. 2 is the functional block diagram of control circuit one embodiment based on air conditioner of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and examples,
Invention is further described in detail.
Fig. 1 is referred to, which show the flow chart of control method one embodiment based on air conditioner of the present invention.At this
In embodiment, connection is not set between air conditioner room unit and outdoor unit, cannot be communicated.The embodiment realizes air conditioner
The method of control includes the following steps：
Step 11：Outdoor unit controls four-way valve according to present mode of operation so that the conducting direction of four-way valve and current operation mould
The refrigerant flow direction of formula demand matches.
In the embodiment, the four-way valve in outdoor unit is connect with outdoor unit, is controlled by outdoor unit.Outdoor unit after the power is turned on, root
Four-way valve is controlled according to present mode of operation so that the conducting direction of four-way valve and the refrigerant of present mode of operation demand flow to phase
Match.
Due to not communicated between indoor unit and outdoor unit, user passes through remote controler or the instruction of air conditioner control panel input
Pattern can not be transferred to outdoor unit, and therefore, outdoor unit voluntarily judges the pattern that current air conditioner should be run, for example, Ke Yigen
Judge operation heating mode or refrigeration mode according to outdoor environment temperature.
Step 12：Outdoor unit control compressor is run with original frequency, and after meeting preset operating conditions, outdoor unit acquisition is worked as
Preceding outdoor environment temperature determines current operation frequency according to current outdoor environment temperature, and control compressor is with current operation frequency
Operation.
Since, without communicating, the running frequency of the compressor in outdoor unit is completely by outdoor between outdoor unit and indoor unit
Machine is controlled.Specifically, after outdoor unit electrifying startup, compressor is controlled first and is run with original frequency.Wherein, initially
The frequency values that frequency is preset, is stored in outdoor unit memory, can easily be read.Meeting default operation
After condition, frequency will be controlled according to outdoor environment temperature.Preset operating conditions are also a preset condition, are used for anti-
Whether reflect can carry out FREQUENCY CONTROL according to outdoor environment temperature to compressor.As a preferred embodiment, operation item is preset
Part is that compressor reaches setting time with original frequency run time, and setting time is also a preset time value.So, full
Sufficient preset operating conditions refer to then the time that compressor is run after startup with original frequency having reached setting time.Hereafter, will
FREQUENCY CONTROL is carried out according to outdoor environment temperature.Specifically, outdoor unit obtains current outdoor environment temperature, according to current outdoor ring
Border temperature determines that current operation frequency, control compressor are run with current operation frequency.
Outdoor environment temperature can influence indoor environment temperature, and the height of outdoor environment temperature can also reflect indoor environment temperature
Height situation.So, according to outdoor environment temperature carry out compressor frequency control, be the equal of according to indoor environment temperature into
Line frequency controls.By the relationship of reasonable selection outdoor environment temperature and running frequency, can make the control of running frequency with
Indoor environment temperature situation matches, so that the control of frequency can obtain more comfortable indoor environment, meets to room
The comfort demand that interior environment is adjusted.Thus, it is practicable to carry out control to compressor frequency according to outdoor environment temperature.
Moreover, to avoid the compressor start operation in the case where coolant system is unripe that indoor temperature is caused to adjust
It is not suitable for, it is preferred that after outdoor unit electrifying startup, outdoor unit first carries out the process that four-way valve is controlled according to present mode of operation,
After the conducting direction control in place of four-way valve, outdoor unit executes the control to compressor again.
Using the above method, the commutation of four-way valve is controlled using outdoor unit, using outdoor unit according to outdoor environment temperature pair
Compressor operating frequency is controlled, and without being communicated between indoor unit and outdoor unit, can also realize air-conditioning system refrigerant
The control of correct cycles and compressor frequency is not present what connection was communicated to realize between indoor unit and outdoor unit
In the case of air conditioner operation control.
As a specific embodiment, current operation frequency is determined according to current outdoor environment temperature, is specifically included：It calculates
The temperature difference of current outdoor environment temperature and setting fiducial temperature, as current temperature difference, according to known temperature difference and operation
The correspondence of frequency and current temperature difference determine corresponding with current temperature difference running frequency, as with current outdoor environment
The corresponding current operation frequency of temperature.Wherein, it is known to set the correspondence of fiducial temperature, temperature difference and running frequency
, be stored in outdoor unit memory.
In addition to it is above-mentioned in such a way that setting fiducial temperature calculates temperature difference, determines according to temperature difference current operation frequency it
Outside, in some other preferred embodiment, current operation frequency can also be determined using following methods：
It determines the temperature range belonging to current outdoor environment temperature, is closed according to known temperature range is corresponding with running frequency
System determines corresponding with the temperature range belonging to current outdoor environment temperature running frequency, as with current outdoor environment temperature
Spend corresponding current operation frequency.Wherein, the correspondence of temperature range and temperature range and running frequency is also
It is knowing, be stored in outdoor unit memory.
Since indoor unit and outdoor unit can not be communicated, how to carry out protection to complete machine is also problem needed to be considered.
In some preferred embodiments, indoor unit obtains the current total working electric current of complete machine of air conditioner, and total working electric current includes indoor unit
Electric current and outdoor unit electric current specifically can obtain the current total working electricity of complete machine by detecting the electric current of the total feeder ear of air conditioner
Stream.Then, indoor unit will execute complete machine according to current total working electric current and protect process, can also be held according to current total working electric current
Row outdoor unit breakdown judge process.For example, current total working electric current is excessive, and complete machine is needed to carry out stoppage protection；Alternatively, in conjunction with room
Interior temperature and current total working electric current, judge whether outdoor unit breaks down, to realize the protection to complete machine.
Fig. 2 show the functional block diagram of control circuit one embodiment based on air conditioner of the present invention.In this embodiment,
Connection is not set between air conditioner room unit and outdoor unit, cannot be communicated.
As shown in Fig. 2, the air conditioner control circuit of the embodiment includes indoor unit control circuit and outdoor unit control electricity
Road.Wherein, indoor unit circuit includes governor circuit 31 and total working current detecting unit 32.Outdoor unit control circuit includes
Frequency control unit 41, outdoor environment temperature detection unit 42 and four-way valve control unit, VCU 43.Also, four-way valve control unit, VCU 43
It is connect with the four-way valve 44 in outdoor unit, frequency control unit 41 is connect with the compressor 45 in outdoor unit.Four-way valve control is single
Governor circuit of the member 43 in outdoor unit control circuit（It is not shown in figure）Collaboration under, according to present mode of operation control four-way
Valve 44 so that the conducting direction of four-way valve 43 and the refrigerant flow direction of present mode of operation demand match.Outdoor unit control circuit
In outdoor environment temperature detection unit 42 for detecting current outdoor environment temperature；And frequency control unit 41 is pressed for controlling
Contracting machine 45 is first run with original frequency, and after meeting preset operating conditions, current operation is determined according to current outdoor environment temperature
Frequency, and control compressor 45 and run with current operation frequency.
Total working current detecting unit 32 in indoor unit control circuit, the current total working for detecting air conditioner complete machine
Electric current, in turn, indoor unit control circuit can execute complete machine protection process and/or outdoor unit failure according to current total working electric current
Deterministic process.
Air conditioner control circuit with above structure runs corresponding software program, according to above-mentioned air-conditioner control method
Description, execute air conditioner operation control, realize the case where being communicated there is no connection between indoor unit and outdoor unit
The operation of lower air conditioner controls.The air conditioner control circuit of the embodiment, which more specifically controls process, can refer to above-mentioned controlling party
The description of method.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to aforementioned reality
Applying example, invention is explained in detail, for those of ordinary skill in the art, still can be to aforementioned implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these are changed or replace
It changes, the spirit and scope for claimed technical solution of the invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. a kind of control method of air conditioner, which is characterized in that the method includes：
Outdoor unit controls four-way valve according to present mode of operation so that the conducting direction of four-way valve is needed with the present mode of operation
The refrigerant flow direction asked matches；
Outdoor unit control compressor is run with original frequency, and after meeting preset operating conditions, outdoor unit obtains current outdoor environment
Temperature determines that current operation frequency, control compressor are transported with the current operation frequency according to the current outdoor environment temperature
Row.
2. according to the method described in claim 1, it is characterized in that, described determine currently according to the current outdoor environment temperature
Running frequency specifically includes：It calculates the current outdoor environment temperature and sets the temperature difference of fiducial temperature, as the current temperature difference
Value determines and the current temperature difference according to the correspondence and the current temperature difference of known temperature difference and running frequency
Corresponding running frequency, as the current operation frequency corresponding with the current outdoor environment temperature.
3. according to the method described in claim 1, it is characterized in that, described determine currently according to the current outdoor environment temperature
Running frequency specifically includes：Determine the temperature range belonging to the current outdoor environment temperature, according to known temperature range with
The correspondence of running frequency determines running frequency corresponding with the temperature range belonging to the current outdoor environment temperature,
As the current operation frequency corresponding with the current outdoor environment temperature.
4. according to the method in any one of claims 1 to 3, which is characterized in that the method further includes：Indoor unit obtains
The current total working electric current of complete machine of air conditioner executes complete machine protection process and/or outdoor unit according to the current total working electric current
Breakdown judge process.
5. a kind of control circuit of air conditioner, including indoor unit control circuit and outdoor unit control circuit, which is characterized in that described
Outdoor unit control circuit includes four-way valve control unit, VCU, and the four-way valve control unit, VCU and the four-way valve being located outside in machine connect
It connects, for controlling four-way valve according to present mode of operation so that the conducting direction of four-way valve and the present mode of operation demand
Refrigerant flow direction match；
The outdoor unit control circuit further includes having frequency control unit and outdoor environment temperature detection unit, the outdoor environment
For detecting current outdoor environment temperature, the frequency control unit is connect temperature detecting unit with compressor, for controlling pressure
Contracting machine is first run with original frequency, and after meeting preset operating conditions, current fortune is determined according to the current outdoor environment temperature
Line frequency, and control compressor and run with the current operation frequency.
6. circuit according to claim 5, which is characterized in that the frequency control unit is according to the current outdoor environment
Temperature determines current operation frequency, specifically includes：It calculates the current outdoor environment temperature and sets the temperature difference of fiducial temperature,
As current temperature difference, according to the correspondence and the current temperature difference of known temperature difference and running frequency, determining and institute
The corresponding running frequency of current temperature difference is stated, as the current operation frequency corresponding with the current outdoor environment temperature
Rate.
7. circuit according to claim 5, which is characterized in that the frequency control unit is according to the current outdoor environment
Temperature determines current operation frequency, specifically includes：The temperature range belonging to the current outdoor environment temperature is determined, according to known
Temperature range and running frequency correspondence, determination it is corresponding with the temperature range belonging to the current outdoor environment temperature
Running frequency, as the current operation frequency corresponding with the current outdoor environment temperature.
8. circuit according to any one of claims 5 to 7, which is characterized in that the indoor unit control circuit further includes
Have complete machine total working current detecting unit, for detecting the current total working electric current of complete machine, the indoor unit control circuit also according to
The current total working electric current executes complete machine protection process and/or outdoor unit breakdown judge process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810007911.5A CN108397872A (en) | 2018-01-04 | 2018-01-04 | The control method and control circuit of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810007911.5A CN108397872A (en) | 2018-01-04 | 2018-01-04 | The control method and control circuit of air conditioner |
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| CN108397872A true CN108397872A (en) | 2018-08-14 |
Family
ID=63093964
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| CN201810007911.5A Pending CN108397872A (en) | 2018-01-04 | 2018-01-04 | The control method and control circuit of air conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819640A (en) * | 2021-09-08 | 2021-12-21 | 青岛海尔空调器有限总公司 | Method and device for controlling outdoor fan and air conditioner outdoor unit |
| CN114110957A (en) * | 2020-08-28 | 2022-03-01 | 广东美的制冷设备有限公司 | Wind frequency linkage control method and device, air conditioner and storage medium |
| CN114543265A (en) * | 2022-01-26 | 2022-05-27 | 青岛海尔空调器有限总公司 | Method and device for self-cleaning of air conditioner, air conditioner and storage medium |
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| CN114110957A (en) * | 2020-08-28 | 2022-03-01 | 广东美的制冷设备有限公司 | Wind frequency linkage control method and device, air conditioner and storage medium |
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| CN114543265A (en) * | 2022-01-26 | 2022-05-27 | 青岛海尔空调器有限总公司 | Method and device for self-cleaning of air conditioner, air conditioner and storage medium |
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Application publication date: 20180814 |
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