CN109059216A - The control method and device of air-conditioning system and its water pump - Google Patents
The control method and device of air-conditioning system and its water pump Download PDFInfo
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- CN109059216A CN109059216A CN201810636758.2A CN201810636758A CN109059216A CN 109059216 A CN109059216 A CN 109059216A CN 201810636758 A CN201810636758 A CN 201810636758A CN 109059216 A CN109059216 A CN 109059216A
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- Prior art keywords
- water pump
- air
- lift
- conditioning system
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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
- F24F11/85—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 variable-flow pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
Abstract
The present invention proposes the control method and device of a kind of air-conditioning system and its water pump, the control method, comprising: obtains water pump current power and original frequency；Present flow rate and current lift are obtained according to the current power of water pump and original frequency；New pepeline characteristic coefficient is generated according to present flow rate and current lift；Water pump is controlled according to new pepeline characteristic coefficient.According to the method for the present invention, can be in real time according to the variation of system water route operating condition, adaptive adjustment water pump frequency reaches no sensor frequency control, meets end flow demand while reducing the purpose of pump work consumption.
Description
Technical field
The present invention relates to the control methods of water pump, a kind of air-conditioning in air-conditioning technical field more particularly to a kind of air-conditioning system
The control device of water pump and a kind of air-conditioning system with the control device in system.
Background technique
Currently, the control method of the common water pump of primary pump variable flow system has temperature difference control methods and differential pressure control method, it is former
Reason is seen figure 1 and figure 2, either temperature difference control methods or differential pressure control method, is required to lay sensor in pipeline, be passed through
Sensor monitors loine pressure or temperature change to control water pump frequency.However, when the installation site for sensor occur is improper, pressure
When the problems such as power or temperature setting range inaccuracy, the delay of measuring signal, the drift of sensor and failure, frequency conversion restrict
The accurate control of water pump.
Therefore, it is necessary to the control methods to water pump in the related technology to improve.
Summary of the invention
One of the technical issues of the present invention is directed at least solve in the related technology to a certain extent.
For this purpose, the first purpose of this invention is to propose a kind of control method of water pump in air-conditioning system, it can be real-time
According to the variation of system water route operating condition, adaptive adjustment water pump frequency reaches no sensor frequency control, meets end flow
Demand reduces the purpose of pump work consumption simultaneously.
Second object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
Third object of the present invention is to propose a kind of computer equipment.
Fourth object of the present invention is to propose a kind of control device of water pump in air-conditioning system.
5th purpose of the invention is to propose a kind of air-conditioning system.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of controlling party of water pump in air-conditioning system
Method, comprising: obtain water pump current power and original frequency；Current stream is obtained according to the current power of the water pump and original frequency
Amount and current lift；New pepeline characteristic coefficient is generated according to the present flow rate and current lift；According to the new pipeline
Characteristic coefficient controls the water pump.
The control method of water pump in air-conditioning system according to an embodiment of the present invention first obtains water pump current power and initial frequency
Rate obtains present flow rate and current lift according to the current power of water pump and original frequency, according to present flow rate and current lift
New pepeline characteristic coefficient is generated, water pump is controlled according to new pepeline characteristic coefficient.This method being capable of real-time root as a result,
According to the variation of system water route operating condition, adaptive adjustment water pump frequency reaches no sensor frequency control, meets end flow need
The purpose of pump work consumption is reduced when seeking common ground.
In addition, in the air-conditioning system proposed according to that above embodiment of the present invention the control method of water pump can also have it is as follows
Additional technical characteristic:
According to one embodiment of present invention, described that current stream is obtained according to the current power and original frequency of the water pump
Amount and current lift specifically include: being worked as according to the current power of the water pump and original frequency inquiry pump characteristic with obtaining
Preceding flow and current lift.
According to one embodiment of present invention, described that new pepeline characteristic is generated according to the present flow rate and current lift
Coefficient specifically includes: generating new pepeline characteristic system according to the present flow rate and current lift inquiry resistance of pipe system characteristic curve
Number, wherein the resistance of pipe system characteristic curve is H=S*Q2, wherein S is the pepeline characteristic coefficient, and H currently raises to be described
Journey, Q are the present flow rate.
According to one embodiment of present invention, described that the water pump is controlled according to the new pepeline characteristic coefficient
It specifically includes: new resistance of pipe system characteristic curve is generated according to the new pepeline characteristic coefficient；It is special to obtain new resistance of pipe system
The intersection point of linearity curve and water pump controlling curve；It obtains the intersection point and corresponds to flow and lift；According to the intersection point correspond to flow and
Lift obtains the target frequency and target power of the water pump；According to the target frequency of the water pump and target power to the water
Pump is controlled.
According to one embodiment of present invention, described flow to be corresponded to according to the intersection point and lift obtains the mesh of the water pump
Mark frequency and target power specifically include: corresponding to flow according to the intersection point and lift inquires the pump characteristic to obtain
The target frequency and target power of the water pump.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter has and is stored in instruction therein, and when executed, the air-conditioning system executes water in above-mentioned air-conditioning system
The control method of pump.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, by executing water pump in above-mentioned air-conditioning system
Control method, can be in real time according to the variation of system water route operating condition, adaptive adjustment water pump frequency reaches no sensor and becomes
Frequency controls, and meets end flow demand while reducing the purpose of pump work consumption.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of computer equipment, including memory, place
Reason device and be stored on the memory and in the air-conditioning system that can be run on the processor water pump control program,
In, the control of water pump in above-mentioned air-conditioning system is realized when the control program of water pump is executed by the processor in the air-conditioning system
Method processed.
The computer equipment of the embodiment of the present invention, can be in real time according to the variation of system water route operating condition, adaptive adjustment
Water pump frequency reaches no sensor frequency control, meets end flow demand while reducing the purpose of pump work consumption.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of control dress of water pump in air-conditioning system
It sets, comprising: first obtains module, for obtaining water pump current power and original frequency；Second obtains module, for according to
The current power and original frequency of water pump obtain present flow rate and current lift；Third obtains module, for according to described current
Flow and current lift generate new pepeline characteristic coefficient；Control module, for according to the new pepeline characteristic coefficient to institute
Water pump is stated to be controlled.
The control device of water pump in air-conditioning system according to an embodiment of the present invention obtains water pump by the first acquisition module and works as
Preceding power and original frequency, then by second obtain module according to the current power and original frequency of water pump obtain present flow rate and
Current lift then and obtains module by third and generates new pepeline characteristic coefficient according to present flow rate and current lift, with
Just control module controls water pump according to new pepeline characteristic coefficient.The device can be in real time according to system water route as a result,
The variation of operating condition, adaptive adjustment water pump frequency, reaches no sensor frequency control, meets end flow demand while reducing
The purpose of pump work consumption.
In addition, in the air-conditioning system proposed according to that above embodiment of the present invention the control device of water pump can also have it is as follows
Additional technical characteristic:
According to one embodiment of present invention, described second module is obtained, be specifically used for: according to the current function of the water pump
Rate and original frequency inquiry pump characteristic are to obtain present flow rate and current lift.
According to one embodiment of present invention, the third obtains module, is specifically used for: according to the present flow rate and working as
Preceding lift inquiry resistance of pipe system characteristic curve generates new pepeline characteristic coefficient, wherein the resistance of pipe system characteristic curve is H=
S*Q2, wherein S is the pepeline characteristic coefficient, and H is the current lift, and Q is the present flow rate.
According to one embodiment of present invention, the control module, is specifically used for: according to the new pepeline characteristic coefficient
Generate new resistance of pipe system characteristic curve；Obtain the intersection point of new resistance of pipe system characteristic curve and water pump controlling curve；Obtain institute
It states intersection point and corresponds to flow and lift；Flow is corresponded to according to the intersection point and lift obtains the target frequency and target function of the water pump
Rate；The water pump is controlled according to the target frequency of the water pump and target power.
According to one embodiment of present invention, described flow to be corresponded to according to the intersection point and lift obtains the mesh of the water pump
Mark frequency and target power specifically include: corresponding to flow according to the intersection point and lift inquires the pump characteristic to obtain
The target frequency and target power of the water pump.
In order to achieve the above objectives, fifth aspect present invention embodiment proposes a kind of air-conditioning system comprising above-mentioned sky
The control device of water pump in adjusting system.
The air-conditioning system of the embodiment of the present invention being capable of real-time root by the control device of water pump in above-mentioned air-conditioning system
According to the variation of system water route operating condition, adaptive adjustment water pump frequency reaches no sensor frequency control, meets end flow need
The purpose of pump work consumption is reduced when seeking common ground.
Detailed description of the invention
Fig. 1 is the schematic diagram of the water pump differential pressure control method of primary pump variable flow system in the related technology；
Fig. 2 is the schematic diagram of the water pump temperature difference control methods of primary pump variable flow system in the related technology；
Fig. 3 is the schematic diagram of pump characteristic according to an embodiment of the invention；
Fig. 4 is the schematic diagram that water pump Controlling model according to an embodiment of the invention is established；
Fig. 5 is the flow chart of the control method of water pump in air-conditioning system according to an embodiment of the present invention；
Fig. 6 is the control principle drawing of water pump in air-conditioning system according to an embodiment of the invention；
Fig. 7 is the flow chart of the control method of water pump in air-conditioning system according to an embodiment of the invention；And
Fig. 8 is the block diagram of the control device of water pump in air-conditioning system according to an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The control method of water pump, air-conditioning in the air-conditioning system proposed according to embodiments of the present invention described with reference to the accompanying drawing
The control device of water pump and the air-conditioning system with the control device in system.
In the air-conditioning system of the description embodiment of the present invention before the control method of water pump, how water is established under describing first
Pump characteristic curve.
Specifically, the foundation of pump characteristic, it may include following steps:
Step 1, resistance of pipe system characteristic curve H=S is established according to water system feature1*Q2, wherein S1For pepeline characteristic system
Number, H is lift, and Q is flow, according to pumps design operating point (Q0, H0), find out S1。
Step 2, water pump controlling curve H=H is established according to water system featuremin+S3*Q2, wherein HminFor minimum lift, phase
When the pressure difference of the least favorable end in legacy system controls, can specifically be determined by theoretical calculation or debugging, according to pumps design work
Condition point (Q0, H0), find out S3。
Step 3, pump characteristic is as shown in figure 4, as can be seen from Figure 4, any one operating point (Q of water pumpi, Hi), it is right
It should be in unique running frequency (fi) and power (Pi), for example, when water pump is with current operation frequency f6When work, operating point 1,
(Q1, H1) correspond to (f6, P1), for another example, when water pump is with current operation frequency f1When work, operating point 2, (Q2, H2) correspond to (f1, P2),
Operating point 3, (Q3, H3) correspond to (f1, P3)；Similarly, water pump is in any one running frequency (fi) and power (Pi) under when running,
Corresponding to a unique operating point (Qi, Hi), according to this characteristic, map water outlet pump Controlling model f (Pi, fi)=f (Qi,
Hi).Specifically as shown in figure 4, can be by water pump controlling curve (H=Hmin+S3*Q2) with point corresponding to the intersection point of water pump frequency line (f)
Power connect fitting, as f (Pi, fi)=f (Qi, Hi) curve.
The control method of water pump in the air-conditioning system of the embodiment of the present invention is described below with reference to Fig. 5 to Fig. 7.
Fig. 5 is the flow chart of the control method of water pump in air-conditioning system according to an embodiment of the present invention, as shown in figure 5, should
The control method of water pump in air-conditioning system, comprising the following steps:
S1 obtains water pump current power and original frequency.
Specifically, it is powered in operational process in air-conditioning system, if the control valve opening of end changes, pipeline resistance
Power can also change, and pepeline characteristic coefficient changes, so that resistance of pipe system characteristic curve moves, for example, working as end
Control valve opening when turning down, pipe resistance increases, and resistance of pipe system characteristic curve moves up；When the control valve opening of end is opened
When big, pipe resistance reduces, and resistance of pipe system characteristic curve moves down.At this point, the power under original frequency occurs accordingly
Variation, the controller of the air-conditioning system can real-time monitoring water pump current power and original frequency.
In an embodiment of the present invention, referring to Fig. 6, for turning down the aperture of regulating valve of end, when the adjusting of end
When valve opening turns down, pipe resistance increases, and resistance of pipe system characteristic curve moves up, and operating point at this time becomes a little 2 from point 1,
Controller is identified in current running frequency (original frequency) f1Lower power declines △ P, current power P2。
S2 obtains present flow rate and current lift according to the current power of water pump and original frequency.
According to one embodiment of present invention, according to the current power of water pump and original frequency acquisition present flow rate and currently
Lift specifically includes: according to the current power of water pump and original frequency inquiry pump characteristic to obtain present flow rate and current
Lift.
With continued reference to Fig. 6, in controller identification water outlet pump in current operation frequency f1Under power by P1Become P2When, lead to
Cross water pump Controlling model f (Pi, fi)=f (Qi, Hi), it can obtain present flow rate and current lift is (Q2, H2)。
S3 generates new pepeline characteristic coefficient according to present flow rate and current lift.
According to one embodiment of present invention, to generate new pepeline characteristic coefficient according to present flow rate and current lift specific
It include: that new pepeline characteristic coefficient is generated according to present flow rate and current lift inquiry resistance of pipe system characteristic curve, wherein pipe network
Resistance curve is H=S*Q2, wherein S is pepeline characteristic coefficient, and H is current lift, and Q is present flow rate.
With continued reference to Fig. 6, present flow rate and current lift (Q are being obtained2, H2) after, by (Q2, H2) substitute into resistance of pipe system spy
Linearity curve H=S*Q2, obtain new pepeline characteristic coefficient S2。
S4 controls water pump according to new pepeline characteristic coefficient.
According to one embodiment of present invention, it carries out control to water pump according to new pepeline characteristic coefficient to specifically include: root
New resistance of pipe system characteristic curve is generated according to new pepeline characteristic coefficient；New resistance of pipe system characteristic curve and water pump is obtained to control
The intersection point of curve；It obtains intersection point and corresponds to flow and lift；According to intersection point correspond to flow and lift obtain water pump target frequency and
Target power；Water pump is controlled according to the target frequency of water pump and target power.
According to one embodiment of present invention, flow is corresponded to according to intersection point and lift obtains the target frequency and target of water pump
Power specifically includes: corresponding to flow and lift inquiry pump characteristic according to intersection point to obtain the target frequency and target of water pump
Power.
With continued reference to Fig. 6, new pepeline characteristic coefficient S is being obtained2Afterwards, new resistance of pipe system characteristic curve H=is produced
S2*Q2, and obtain new resistance of pipe system characteristic curve H=S2*Q2With water pump controlling curve H=Hmin+S3*Q2Intersection point, the intersection point
Corresponding flow and lift are (Qc, Hc).Then, according to water pump Controlling model f (Pi, fi)=f (Qi, Hi), controller calculates
To new running frequency and power, i.e. target power PcWith target frequency fc.Getting target frequency fcWith target power Pc
Afterwards, controller issues control instruction, by the current operation frequency of water pump by f1It is reduced to fc, this stylish resistance of pipe system characteristic song
Line H=S2*Q2With water pump controlling curve H=Hmin+S3*Q2Intersection point become new operating point 3.Controller exports new operating point
3 characteristic (Qc, Hc, fc, Pc).Thereby, it is possible to the variation according to system water route operating condition, adaptive adjustment water pump frequency reaches
Without sensor frequency control, meets end flow demand while reducing the purpose of pump work consumption.
It should be noted that above-described embodiment was only illustrated for turning down the regulating valve of end, when by end
Control valve opening when opening big, pipe resistance reduces, and characteristic curve of pipeline moves down, and the characteristic of new operating point can equally lead to
It crosses the above method to obtain, to avoid redundancy, details are not described herein.
To make those skilled in the art more clearly understand the present invention, as shown in fig. 7, in the air-conditioning system water pump control
The method of method, it may include following steps:
The aperture of S101, end-of-pipe control valve change.
S102, monitoring control devices current power P2With original frequency f1。
S103, controller is according to water pump Controlling model f (Pi, fi)=f (Qi, Hi) calculate present flow rate Q2With current lift
H2。
S104, according to present flow rate Q2With current lift H2, controller calculates new pepeline characteristic coefficient S2。
S105, controller is according to new resistance of pipe system characteristic curve H=S2*Q2With water pump controlling curve H=Hmin+S3*Q2
Intersection point calculation go out the corresponding flow Q of the intersection pointcWith lift Hc。
S106, controller is according to water pump Controlling model f (Pi, fi)=f (Qi, Hi) calculate outflow QcWith lift HcIt is corresponding
Target frequency fcWith target power Pc。
S107, controller issue control instruction, the frequency of water pump are adjusted to fc, export Qc, Hc, fc, Pc。
Method of the invention can be in real time according to the variation of system water route operating condition as a result, adaptive adjustment water pump frequency,
Achieve the purpose that no sensor frequency control, meet end flow demand while reducing the purpose of pump power, also, due to water pump
Component not only reduces the sensor cost in building control without sensor, and also reduces because of sensor failure bring
Failure risk is controlled, the reliability of building control is substantially increased.
In conclusion in air-conditioning system according to an embodiment of the present invention water pump control method, first obtain the current function of water pump
Rate and original frequency obtain present flow rate and current lift according to the current power of water pump and original frequency, according to present flow rate
New pepeline characteristic coefficient is generated with current lift, water pump is controlled according to new pepeline characteristic coefficient.This method as a result,
Can be in real time according to the variation of system water route operating condition, adaptive adjustment water pump frequency reaches no sensor frequency control, meets
End flow demand reduces the purpose of pump work consumption simultaneously.
Further, the embodiment of the present invention also proposed a kind of non-transitorycomputer readable storage medium, have storage
In instruction therein, when executed, air-conditioning system executes the control method of water pump in above-mentioned air-conditioning system.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, by executing water pump in above-mentioned air-conditioning system
Control method, can be in real time according to the variation of system water route operating condition, adaptive adjustment water pump frequency reaches no sensor and becomes
Frequency controls, and meets end flow demand while reducing the purpose of pump work consumption.
Further, the embodiment of the present invention also proposed a kind of computer equipment, including memory, processor and storage
The control program of water pump on a memory and in the air-conditioning system that can run on a processor, wherein water pump in air-conditioning system
Control program realizes the control method of water pump in above-mentioned air-conditioning system when being executed by processor.
The computer equipment of the embodiment of the present invention, can be in real time according to the variation of system water route operating condition, adaptive adjustment
Water pump frequency reaches no sensor frequency control, meets end flow demand while reducing the purpose of pump work consumption.
Fig. 8 is the block diagram of the control device of water pump in air-conditioning system according to an embodiment of the present invention.Such as Fig. 8 institute
Show, the control device of water pump in the air-conditioning system, comprising: first, which obtains module 10, second, obtains module 20, third acquisition module
30 and control module 40.
Wherein, the first acquisition module 10 is used for for obtaining water pump current power and original frequency, the second acquisition module 20
Present flow rate and current lift are obtained according to the current power of water pump and original frequency, third obtains module 30 and is used for according to current
Flow and current lift generate new pepeline characteristic coefficient, control module 40 be used for according to new pepeline characteristic coefficient to water pump into
Row control.
According to one embodiment of present invention, the second acquisition module 20 is specifically used for: according to the current power of water pump and just
Beginning frequency queries pump characteristic is to obtain present flow rate and current lift.
According to one embodiment of present invention, third obtains module 30 and is specifically used for: according to present flow rate and current lift
Inquiry resistance of pipe system characteristic curve generates new pepeline characteristic coefficient, wherein resistance of pipe system characteristic curve is H=S*Q2, wherein
S is pepeline characteristic coefficient, and H is current lift, and Q is present flow rate.
According to one embodiment of present invention, control module 40 is specifically used for: being generated according to new pepeline characteristic coefficient new
Resistance of pipe system characteristic curve；Obtain the intersection point of new resistance of pipe system characteristic curve and water pump controlling curve；It is corresponding to obtain intersection point
Flow and lift；Flow is corresponded to according to intersection point and lift obtains the target frequency and target power of water pump；According to the target of water pump
Frequency and target power control water pump.
According to one embodiment of present invention, flow is corresponded to according to intersection point and lift obtains the target frequency and target of water pump
Power specifically includes: corresponding to flow and lift inquiry pump characteristic according to intersection point to obtain the target frequency and target of water pump
Power.
It should be noted that undisclosed details in the control device of water pump in the air-conditioning system of the embodiment of the present invention, is asked
With reference to the embodiment of the present invention air-conditioning system in water pump control method disclosed in details, it is specific that I will not elaborate.
The control device of water pump in air-conditioning system according to an embodiment of the present invention obtains water pump by the first acquisition module and works as
Preceding power and original frequency, then by second obtain module according to the current power and original frequency of water pump obtain present flow rate and
Current lift then and obtains module by third and generates new pepeline characteristic coefficient according to present flow rate and current lift, with
Just control module controls water pump according to new pepeline characteristic coefficient.The device can be in real time according to system water route as a result,
The variation of operating condition, adaptive adjustment water pump frequency, reaches no sensor frequency control, meets end flow demand while reducing
The purpose of pump work consumption.
Further, the embodiment of the present invention also proposed a kind of air-conditioning system comprising water pump in above-mentioned air-conditioning system
Control device.
The air-conditioning system of the embodiment of the present invention being capable of real-time root by the control device of water pump in above-mentioned air-conditioning system
According to the variation of system water route operating condition, adaptive adjustment water pump frequency reaches no sensor frequency control, meets end flow need
The purpose of pump work consumption is reduced when seeking common ground.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In addition, in the description of the present invention, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ",
"upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " clockwise ", " inverse time
The orientation or positional relationship of the instructions such as needle ", " axial direction ", " radial direction ", " circumferential direction " is to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (13)
1. the control method of water pump in a kind of air-conditioning system characterized by comprising
Obtain water pump current power and original frequency；
Present flow rate and current lift are obtained according to the current power of the water pump and original frequency；
New pepeline characteristic coefficient is generated according to the present flow rate and current lift；
The water pump is controlled according to the new pepeline characteristic coefficient.
2. the control method of water pump in air-conditioning system as described in claim 1, which is characterized in that described according to the water pump
Current power and original frequency obtain present flow rate and current lift specifically includes:
According to the current power of the water pump and original frequency inquiry pump characteristic to obtain present flow rate and current lift.
3. the control method of water pump in air-conditioning system as described in claim 1, which is characterized in that described according to the current stream
Amount and current lift generate new pepeline characteristic coefficient and specifically include:
New pepeline characteristic coefficient is generated according to the present flow rate and current lift inquiry resistance of pipe system characteristic curve, wherein
The resistance of pipe system characteristic curve is H=S*Q2, wherein S is the pepeline characteristic coefficient, and H is the current lift, and Q is institute
State present flow rate.
4. the control method of water pump in air-conditioning system as described in claim 1, which is characterized in that described according to the new pipe
Road characteristic coefficient carries out control to the water pump and specifically includes:
New resistance of pipe system characteristic curve is generated according to the new pepeline characteristic coefficient；
Obtain the intersection point of new resistance of pipe system characteristic curve and water pump controlling curve；
It obtains the intersection point and corresponds to flow and lift；
Flow is corresponded to according to the intersection point and lift obtains the target frequency and target power of the water pump；
The water pump is controlled according to the target frequency of the water pump and target power.
5. the control method of water pump in air-conditioning system as claimed in claim 4, which is characterized in that described according to the intersection point pair
Answer that flow and lift obtain the target frequency of the water pump and target power specifically includes:
Correspond to flow according to the intersection point and lift inquire the pump characteristic with obtain the target frequency of the water pump and
Target power.
6. a kind of non-transitorycomputer readable storage medium, which is characterized in that have and be stored in instruction therein, when the finger
Order is performed, and the air-conditioning system executes the controlling party of water pump in air-conditioning system according to any one of claims 1 to 5
Method.
7. a kind of computer equipment, which is characterized in that including memory, processor and be stored on the memory and can be in institute
State the control program of water pump in the air-conditioning system run on processor, wherein the control program quilt of water pump in the air-conditioning system
The processor realizes the control method of water pump in air-conditioning system according to any one of claims 1 to 5 when executing.
8. the control device of water pump in a kind of air-conditioning system characterized by comprising
First obtains module, for obtaining water pump current power and original frequency；
Second obtains module, for obtaining present flow rate and current lift according to the current power and original frequency of the water pump；
Third obtains module, for generating new pepeline characteristic coefficient according to the present flow rate and current lift；
Control module, for being controlled according to the new pepeline characteristic coefficient the water pump.
9. the control device of water pump in air-conditioning system as claimed in claim 8, which is characterized in that described second obtains module,
It is specifically used for:
According to the current power of the water pump and original frequency inquiry pump characteristic to obtain present flow rate and current lift.
10. the control device of water pump in air-conditioning system as claimed in claim 8, which is characterized in that the third obtains module,
It is specifically used for:
New pepeline characteristic coefficient is generated according to the present flow rate and current lift inquiry resistance of pipe system characteristic curve, wherein
The resistance of pipe system characteristic curve is H=S*Q2, wherein S is the pepeline characteristic coefficient, and H is the current lift, and Q is institute
State present flow rate.
11. the control device of water pump in air-conditioning system as claimed in claim 8, which is characterized in that the control module, specifically
For:
New resistance of pipe system characteristic curve is generated according to the new pepeline characteristic coefficient；
Obtain the intersection point of new resistance of pipe system characteristic curve and water pump controlling curve；
It obtains the intersection point and corresponds to flow and lift；
Flow is corresponded to according to the intersection point and lift obtains the target frequency and target power of the water pump；
The water pump is controlled according to the target frequency of the water pump and target power.
12. the control device of water pump in air-conditioning system as claimed in claim 11, which is characterized in that described according to the intersection point
It corresponds to flow and lift obtains the target frequency of the water pump and target power specifically includes:
Correspond to flow according to the intersection point and lift inquire the pump characteristic with obtain the target frequency of the water pump and
Target power.
13. a kind of air-conditioning system, which is characterized in that including water pump in the air-conditioning system as described in any one of claim 8-12
Control device.
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| CN201810636758.2A CN109059216B (en) | 2018-06-20 | 2018-06-20 | Air conditioning system and control method and device of water pump of air conditioning system |
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| CN201810636758.2A CN109059216B (en) | 2018-06-20 | 2018-06-20 | Air conditioning system and control method and device of water pump of air conditioning system |
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Effective date of registration: 20190424 Address after: 528311 6th Floor, Global Innovation Center, Meijiao Town, Shunde District, Foshan City, Guangdong Province Applicant after: Guangdong Midea HVAC Equipment Co., Ltd. Applicant after: GUANGZHOU METRO GROUP CO., LTD. Address before: 528311 Penglai Road industrial town, Beijiao Town, Shunde District, Foshan, Guangdong Applicant before: Guangdong Midea HVAC Equipment Co., Ltd. Applicant before: Midea Group Co., Ltd. |
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