CN108954728A - A kind of intelligent frequency-conversion energy-saving control method for central air conditioner - Google Patents
A kind of intelligent frequency-conversion energy-saving control method for central air conditioner Download PDFInfo
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- CN108954728A CN108954728A CN201810743002.8A CN201810743002A CN108954728A CN 108954728 A CN108954728 A CN 108954728A CN 201810743002 A CN201810743002 A CN 201810743002A CN 108954728 A CN108954728 A CN 108954728A
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- Prior art keywords
- temperature
- expansion valve
- environment temperature
- driving circuit
- electric expansion
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to a kind of intelligent frequency-conversion energy-saving control method for central air conditioner, the first temperature sensor real-time detection indoor environment temperature, while second temperature sensor real-time detection outdoor environment temperature, and it is sent to determination module；Valve opening value under environment temperature is sent to determination module by electric expansion valve；Indoor environment temperature and outdoor environment temperature are compared by determination module；If outdoor environment temperature is greater than or equal to the 175% of indoor environment temperature, it is transferred to the 4th step；No person is transferred to the 5th step；Control module sends the first signal and the aperture of electric expansion valve is adjusted, so that driving circuit drives the driving motor rotation so that indoor environment is adjusted to the temperature of S1 to driving circuit；Control module sends second signal and the aperture of electric expansion valve is adjusted, so that driving circuit drives the driving motor rotation so that indoor environment is adjusted to the temperature of S2 to driving circuit.
Description
Technical field
The invention belongs to field of air conditioning, and in particular to a kind of cold/hot air-conditioning more particularly to a kind of intelligent frequency-conversion central air-conditioning
Energy-saving control method.
Background technique
Central air conditioner system is made of one or more cold and heat source systems and multiple air handling systems, which is different from
Traditional cryogen formula air-conditioning, (such as uniset, VRV) air centralized processing have reached comfort requirement.The original freezed using liquid gasification
Reason provides institute's chilling requirement for air handling system, to offset the refrigeration duty of indoor environment；Heating system is air handling system
Institute's calorific requirement is provided, to offset indoor environment thermic load.
Existing central air-conditioning is exactly that energy consumption is higher, energy saving is poor, causes using the electricity charge there are a common disadvantage
It is high.By taking the house on 90 level ground of a family as an example, need to expend two usual every month in six hot Julys using central air-conditioning
300 electricity charge, it is even higher, and common vertical air conditioner only needs to expend one two hundred electricity charge.
In consideration of it, proposing a kind of intelligent frequency-conversion energy-saving control method for central air conditioner project of the invention to be studied.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of intelligent frequency-conversion energy-saving control method for central air conditioner, with
Solve the problems, such as the problem of existing air-conditioning energy consumption is high, energy saving is poor.
To achieve the goals above, the invention adopts the following technical scheme: a kind of intelligent frequency-conversion central air-conditioning energy controls
Method, the central air-conditioning include refrigerating and heating systems and control system；Wherein, the refrigerating and heating systems include by refrigerant
The sequentially connected condenser of delivery pipe, electric expansion valve, evaporator and compressor；
The control system includes controller, the first temperature sensor, second temperature sensor, driving circuit and control plane
Plate, the controller, the first temperature sensor and driving circuit are respectively provided on the control panel, the second temperature sensor
It is arranged in outdoor environment；
The controller includes a MCU, has an analog-to-digital conversion module, a memory module, a determination module and one in the MCU
Control module；Wherein, a first normal temperature value D1 under refrigerating state is previously stored in the memory module, this first
Normal temperature value D1 corresponds to the first standard aperture B1 of electric expansion valve；
The electric expansion valve includes valve seat, spool and driving motor, and the driving motor driving spool opposite valve seat slides,
To adjust the output flow of electric expansion valve；
The input terminal of the output end connection analog-to-digital conversion module of the temperature sensor, the output end of the analog-to-digital conversion module connect
Connect the input terminal of memory module, the input terminal of the output end connection determination module of the memory module, the determination module it is defeated
The input terminal of outlet link control module, the input terminal of the output end connection driving circuit of the control module, the driving electricity
The output end on road connects electric expansion valve；
Under refrigerating state, operation is followed the steps below:
S1, the first temperature sensor real-time detection indoor environment temperature T1, while second temperature sensor real-time detection room
External environment temperature T2, and the temperature that will test is sent to determination module；Meanwhile the electric expansion valve is by T1 pairs of environment temperature
The valve opening value K1 answered is sent to determination module；
S2, the indoor environment temperature T1 and outdoor environment temperature T2 that the determination module will test are compared；
S3 is transferred to the 4th step if outdoor environment temperature T2 is greater than or equal to the 175% of the T1 of indoor environment temperature；No person turns
Enter the 5th step；Wherein, S4 and S5 be in no particular order；
S4, the control module sends the first signal to driving circuit, so that driving circuit drives the driving motor rotation, it will
The aperture of electric expansion valve is adjusted according to the formula of J1=B1*70+K1*30, so that indoor environment is adjusted to S1=D1*65+
The temperature of T2*25+T1*10；
S5, the control module sends second signal to driving circuit, so that driving circuit drives the driving motor rotation, it will
The aperture of electric expansion valve is adjusted according to the formula of J1=B1*50+K1*50, so that indoor environment is adjusted to S2=D1*50+
The temperature of T2*25+T1*25.
As a further improvement of the present invention, second mark under heating state is previously stored in the memory module
Quasi- temperature value D2, the second normal temperature value D2 correspond to the second standard aperture B2 of electric expansion valve；
Under heating state, operation is followed the steps below:
SS1, the first temperature sensor real-time detection indoor environment temperature T1 ', while second temperature sensor real-time detection
Outdoor environment temperature T2 ', and the temperature that will test is sent to determination module；Meanwhile the electric expansion valve is by environment temperature
The corresponding valve opening value K1 ' of T1 ' is sent to determination module；
SS2, the indoor environment temperature T1 ' and outdoor environment temperature T2 ' that the determination module will test are compared；
SS3, if the 300% of the outdoor environment temperature T2 ' that the T1 ' of indoor environment temperature is greater than or equal to, it is transferred to the 4th step；It is no
Person is transferred to the 5th step；Wherein, S4 and S5 be in no particular order；
SS4, the control module sends third signal to driving circuit, so that driving circuit drives the driving motor rotation,
The aperture of electric expansion valve is adjusted according to the formula of J3=B2*65+K1 ' * 35, so that indoor environment is adjusted to S3=D2*
The temperature of 65+T2 ' * 25+T1 ' * 10；
SS5, the control module sends fourth signal to driving circuit, so that driving circuit drives the driving motor rotation,
The aperture of electric expansion valve is adjusted according to the formula of J4=B2*45+K1 ' * 55, so that indoor environment is adjusted to S4=D2*
The temperature of 50+T2 ' * 25+T1 ' * 25.
As a further improvement of the present invention, the end of the valve seat is provided with a temperature-sensitive pressure and adjusts component, the sense
One end that temperature and pressure power adjusts component is connected with push rod, and the push rod is connect with the core assembly of the valve inner.
As a further improvement of the present invention, the condenser and evaporator separately include multiple fins, described
Multiple fins are arranged side by side；Heat conducting pipe, the heat conducting pipe are threaded through in the multiple fin.
As a further improvement of the present invention, the heat conducting pipe includes heat conducting pipe tube body and thermally conductive pipe screw thread, described thermally conductive
Refrigerant passage is limited in pipe tube body, the thermally conductive pipe screw thread is formed in the inner wall of the heat conducting pipe tube body.
It as a further improvement of the present invention, further include four-way valve, for the refrigerant under refrigerating state and heating state
Direction switching.
As a further improvement of the present invention, the MCU uses model STM32F103C8T6 chip.
Working principle and effect of the present invention are as follows:
The present invention relates to a kind of intelligent frequency-conversion energy-saving control method for central air conditioner, the first temperature sensor are equipped with indoors, in room
It is externally provided with second temperature sensor.In the operating condition, by real-time detection indoor environment temperature and outdoor environment temperature, then sentence
Determine indoor environment temperature and outdoor environment temperature is poor, according to decision structure automatic adjusument room temperature, so that interior will not allow
Environment temperature and outdoor environment temperature difference are excessive, so as to effectively prevent energy waste.Because not only unrestrained when difference is excessive
Take the energy, also will affect the health of user.Room temperature and outdoor temperature difference are only adjusted to one rationally by the present invention
Range, not only can guarantee user use, but also will not the excessive waste energy, play the role of energy saving.
Intelligence degree of the present invention is high, energy-saving effect is good, can effectively prevent energy waste, the system of automatic adjusument air-conditioning
Cold or heating capacity, plays the role of energy saving, while will not influence the use of user.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed in the present application in any way
It encloses.In addition, shape and proportional sizes of each component in figure etc. are only schematical, it is used to help the understanding to the application, and
It is not the specific shape and proportional sizes for limiting each component of the application.Those skilled in the art, can under teachings of the present application
Implement the application to select various possible shapes and proportional sizes as the case may be.In the accompanying drawings:
Attached drawing 1 is the flow chart of intelligent frequency-conversion of embodiment of the present invention central air-conditioning refrigerating state；
Attached drawing 2 is the flow chart that intelligent frequency-conversion of embodiment of the present invention central air-conditioning heats state；
Attached drawing 3 is the schematic illustration of intelligent frequency-conversion of embodiment of the present invention central air-conditioning.
Specific embodiment
The present invention will be further illustrated in following example.These embodiments are merely to illustrate the present invention, but not to appoint
Where formula limitation is of the invention.
A kind of embodiment: intelligent frequency-conversion energy-saving control method for central air conditioner
Referring to attached drawing 3, the central air-conditioning includes refrigerating and heating systems and control system；Wherein, the refrigerating and heating systems packet
It includes by the sequentially connected condenser of conveying pipe of refrigerant, electric expansion valve, evaporator and compressor.Wherein, the condenser
It separately include multiple fins with evaporator, the multiple fin is arranged side by side；Heat conducting pipe, the heat conducting pipe are threaded through institute
It states in multiple fins.The heat conducting pipe includes heat conducting pipe tube body and thermally conductive pipe screw thread, limits refrigeration in the heat conducting pipe tube body
Agent access, the thermally conductive pipe screw thread are formed in the inner wall of the heat conducting pipe tube body.Further include four-way valve, in refrigerating state and
The direction switching of refrigerant under heating state.
The control system includes controller, the first temperature sensor, second temperature sensor, driving circuit and control
Panel, the controller, the first temperature sensor and driving circuit are respectively provided on the control panel, the second temperature sensing
Device is arranged in outdoor environment.
The controller includes a MCU, have in the MCU analog-to-digital conversion module, a memory module, a determination module with
An and control module；Wherein, a first normal temperature value D1 under refrigerating state is previously stored in the memory module, it should
First normal temperature value D1 corresponds to the first standard aperture B1 of electric expansion valve.The end of the valve seat is provided with a temperature-sensitive pressure
Component is adjusted, one end that the temperature-sensitive pressure adjusts component is connected with push rod, the spool group of the push rod and the valve inner
Part connection.In the present embodiment, the MCU uses model STM32F103C8T6 chip.
The electric expansion valve includes valve seat, spool and driving motor, and the driving motor drives spool opposite valve seat
Sliding, to adjust the output flow of electric expansion valve.
The input terminal of the output end connection analog-to-digital conversion module of the temperature sensor, the output of the analog-to-digital conversion module
The input terminal of end connection memory module, the input terminal of the output end connection determination module of the memory module, the determination module
Output end link control module input terminal, the control module output end connection driving circuit input terminal, the drive
The output end of dynamic circuit connects electric expansion valve.
Referring to attached drawing 1, under refrigerating state, operation is followed the steps below:
S1, the first temperature sensor real-time detection indoor environment temperature T1, while second temperature sensor real-time detection room
External environment temperature T2, and the temperature that will test is sent to determination module；Meanwhile the electric expansion valve is by T1 pairs of environment temperature
The valve opening value K1 answered is sent to determination module.
S2, the indoor environment temperature T1 and outdoor environment temperature T2 that the determination module will test are compared.
S3 is transferred to the 4th step if outdoor environment temperature T2 is greater than or equal to the 175% of the T1 of indoor environment temperature；It is no
Person is transferred to the 5th step；Wherein, S4 and S5 be in no particular order.
S4, the control module send the first signal to driving circuit, so that driving circuit drives the driving motor to turn
It is dynamic, the aperture of electric expansion valve is adjusted according to the formula of J1=B1*70+K1*30 so that indoor environment adjust to S1=
The temperature of D1*65+T2*25+T1*10.
S5, the control module send second signal to driving circuit, so that driving circuit drives the driving motor to turn
It is dynamic, the aperture of electric expansion valve is adjusted according to the formula of J1=B1*50+K1*50 so that indoor environment adjust to S2=
The temperature of D1*50+T2*25+T1*25.
In addition, being previously stored with second normal temperature under heating state in the memory module in the present embodiment
Value D2, the second normal temperature value D2 correspond to the second standard aperture B2 of electric expansion valve.
Referring to attached drawing 2, under heating state, operation is followed the steps below:
SS1, the first temperature sensor real-time detection indoor environment temperature T1 ', while second temperature sensor real-time detection
Outdoor environment temperature T2 ', and the temperature that will test is sent to determination module；Meanwhile the electric expansion valve is by environment temperature
The corresponding valve opening value K1 ' of T1 ' is sent to determination module.
SS2, the indoor environment temperature T1 ' and outdoor environment temperature T2 ' that the determination module will test are compared.
SS3, if the 300% of the outdoor environment temperature T2 ' that the T1 ' of indoor environment temperature is greater than or equal to, it is transferred to the 4th
Step；No person is transferred to the 5th step；Wherein, S4 and S5 be in no particular order；
SS4, the control module sends third signal to driving circuit, so that driving circuit drives the driving motor rotation,
The aperture of electric expansion valve is adjusted according to the formula of J3=B2*65+K1 ' * 35, so that indoor environment is adjusted to S3=D2*
The temperature of 65+T2 ' * 25+T1 ' * 10.
SS5, the control module send fourth signal to driving circuit, so that driving circuit drives the driving motor to turn
It is dynamic, the aperture of electric expansion valve is adjusted according to the formula of J4=B2*45+K1 ' * 55 so that indoor environment adjust to S4=
The temperature of D2*50+T2 ' * 25+T1 ' * 25.
It should be noted that in the description of the present application, unless otherwise indicated, the meaning of " plurality " is two or two with
On.
Here the combination of element, ingredient, component or step is described using term "comprising" or " comprising " it is also contemplated that
Substantially the embodiment being made of these elements, ingredient, component or step.Here by using term " can with ", it is intended to illustrate
Described any attribute that " can with " includes all is optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to preceding claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as applicant the theme is not thought of as it is disclosed
Apply for a part of theme.
The series of detailed descriptions listed above only for the application feasible embodiment specifically
Bright, they are not the protection scope to limit the application, all without departing from equivalent implementations made by the application skill spirit
Or change should be included within the scope of protection of this application.
Claims (7)
1. a kind of intelligent frequency-conversion energy-saving control method for central air conditioner, it is characterised in that: the central air-conditioning includes cooling and warming system
System and control system；Wherein, the refrigerating and heating systems include by the sequentially connected condenser of conveying pipe of refrigerant, electronic expansion
Valve, evaporator and compressor；
The control system includes controller, the first temperature sensor, second temperature sensor, driving circuit and control plane
Plate, the controller, the first temperature sensor and driving circuit are respectively provided on the control panel, the second temperature sensor
It is arranged in outdoor environment；
The controller includes a MCU, has an analog-to-digital conversion module, a memory module, a determination module and one in the MCU
Control module；Wherein, a first normal temperature value D1 under refrigerating state is previously stored in the memory module, this first
Normal temperature value D1 corresponds to the first standard aperture B1 of electric expansion valve；
The electric expansion valve includes valve seat, spool and driving motor, and the driving motor driving spool opposite valve seat slides,
To adjust the output flow of electric expansion valve；
The input terminal of the output end connection analog-to-digital conversion module of the temperature sensor, the output end of the analog-to-digital conversion module connect
Connect the input terminal of memory module, the input terminal of the output end connection determination module of the memory module, the determination module it is defeated
The input terminal of outlet link control module, the input terminal of the output end connection driving circuit of the control module, the driving electricity
The output end on road connects electric expansion valve；
Under refrigerating state, operation is followed the steps below:
S1, the first temperature sensor real-time detection indoor environment temperature T1, while second temperature sensor real-time detection room
External environment temperature T2, and the temperature that will test is sent to determination module；Meanwhile the electric expansion valve is by T1 pairs of environment temperature
The valve opening value K1 answered is sent to determination module；
S2, the indoor environment temperature T1 and outdoor environment temperature T2 that the determination module will test are compared；
S3 is transferred to the 4th step if outdoor environment temperature T2 is greater than or equal to the 175% of the T1 of indoor environment temperature；No person turns
Enter the 5th step；Wherein, S4 and S5 be in no particular order；
S4, the control module sends the first signal to driving circuit, so that driving circuit drives the driving motor rotation, it will
The aperture of electric expansion valve is adjusted according to the formula of J1=B1*70+K1*30, so that indoor environment is adjusted to S1=D1*65+
The temperature of T2*25+T1*10；
S5, the control module sends second signal to driving circuit, so that driving circuit drives the driving motor rotation, it will
The aperture of electric expansion valve is adjusted according to the formula of J1=B1*50+K1*50, so that indoor environment is adjusted to S2=D1*50+
The temperature of T2*25+T1*25.
2. intelligent frequency-conversion energy-saving control method for central air conditioner according to claim 1, it is characterised in that: the memory module
In be previously stored with a second normal temperature value D2 under heating state, the second normal temperature value D2 corresponds to electric expansion valve
The second standard aperture B2；
Under heating state, operation is followed the steps below:
SS1, the first temperature sensor real-time detection indoor environment temperature T1 ', while second temperature sensor real-time detection
Outdoor environment temperature T2 ', and the temperature that will test is sent to determination module；Meanwhile the electric expansion valve is by environment temperature
The corresponding valve opening value K1 ' of T1 ' is sent to determination module；
SS2, the indoor environment temperature T1 ' and outdoor environment temperature T2 ' that the determination module will test are compared；
SS3, if the 300% of the outdoor environment temperature T2 ' that the T1 ' of indoor environment temperature is greater than or equal to, it is transferred to the 4th step；It is no
Person is transferred to the 5th step；Wherein, S4 and S5 be in no particular order；
SS4, the control module sends third signal to driving circuit, so that driving circuit drives the driving motor rotation,
The aperture of electric expansion valve is adjusted according to the formula of J3=B2*65+K1 ' * 35, so that indoor environment is adjusted to S3=D2*
The temperature of 65+T2 ' * 25+T1 ' * 10；
SS5, the control module sends fourth signal to driving circuit, so that driving circuit drives the driving motor rotation,
The aperture of electric expansion valve is adjusted according to the formula of J4=B2*45+K1 ' * 55, so that indoor environment is adjusted to S4=D2*
The temperature of 50+T2 ' * 25+T1 ' * 25.
3. intelligent frequency-conversion energy-saving control method for central air conditioner according to claim 1, it is characterised in that: the end of the valve seat
Portion is provided with a temperature-sensitive pressure and adjusts component, and one end that the temperature-sensitive pressure adjusts component is connected with push rod, the push rod and institute
State the core assembly connection of valve inner.
4. intelligent frequency-conversion energy-saving control method for central air conditioner according to claim 1, it is characterised in that: the condenser with
Evaporator separately includes multiple fins, and the multiple fin is arranged side by side；Heat conducting pipe, the heat conducting pipe are threaded through described
In multiple fins.
5. intelligent frequency-conversion energy-saving control method for central air conditioner according to claim 4, it is characterised in that: the heat conducting pipe packet
Heat conducting pipe tube body and thermally conductive pipe screw thread are included, refrigerant passage is limited in the heat conducting pipe tube body, the thermally conductive pipe screw thread is formed
In the inner wall of the heat conducting pipe tube body.
6. intelligent frequency-conversion energy-saving control method for central air conditioner according to claim 1, it is characterised in that: further include four-way
Valve, the direction switching for the refrigerant under refrigerating state and heating state.
7. intelligent frequency-conversion energy-saving control method for central air conditioner according to claim 1, it is characterised in that: the MCU is used
Model STM32F103C8T6 chip.
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| CN201810743002.8A CN108954728B (en) | 2018-07-09 | 2018-07-09 | Energy-saving control method for intelligent variable-frequency central air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113932426A (en) * | 2021-10-15 | 2022-01-14 | 青岛海尔空调器有限总公司 | Control method and control system for air conditioner power limiting, electronic equipment and storage medium |
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| CN113932426A (en) * | 2021-10-15 | 2022-01-14 | 青岛海尔空调器有限总公司 | Control method and control system for air conditioner power limiting, electronic equipment and storage medium |
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| CN108954728B (en) | 2020-08-11 |
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