CN107588504A - Air-conditioner water system integrated pump valve control device and control method - Google Patents
Air-conditioner water system integrated pump valve control device and control method Download PDFInfo
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- CN107588504A CN107588504A CN201710799436.5A CN201710799436A CN107588504A CN 107588504 A CN107588504 A CN 107588504A CN 201710799436 A CN201710799436 A CN 201710799436A CN 107588504 A CN107588504 A CN 107588504A
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Abstract
The present invention relates to central air conditioning system technical field, more particularly to a kind of air-conditioner water system integrated pump valve control device and control method；Described device includes controller, and the controller includes being sequentially connected energy valve information acquisition unit, the index circuit selecting unit connect；The energy valve information acquisition unit is connected with least one Intelligent Energy valve, obtains the valve seat opening value of Intelligent Energy valve；The index circuit selecting unit determines index circuit according to the valve seat opening value of each Intelligent Energy valve, exports the valve seat opening value of index circuit；The pump group frequency-variable controller calculates adjustment frequency according to the valve seat opening value of index circuit, will adjust the motor of frequency transmission feed pump；The present invention is using index circuit as foundation, VFC is carried out to water pump, the opening value of index circuit is reached more rational open range, and the present invention is repeated cyclically, so that each loop is all positively retained in rational open range, so as to the energy-saving effect being optimal.
Description
Technical field
The present invention relates to central air conditioning system technical field, more particularly to a kind of air-conditioner water system integrated pump valve control
Device and control method.
Background technology
Central air-conditioning is widely available in China as large-scale refrigeration or heating equipment.In general central air conditioner system is such as
Shown in Fig. 1, including water pump 60, water main 10, return main 20, water main carry water supply branch pipe 11, and water supply branch pipe 11 connects
It is connected to the water inlet of air conditioning terminal 30 (including any one in combined air conditioning box AHU, air-conditioning box PAU, fan coil FCU etc.)
Port, return main 20 carry return branch 21, and return branch 21 is connected to the water outlet port of air conditioning terminal 30, return branch 21
On be connected with two-port valve 40.Water pump 60 will supply water from the pump of water main 10 to water supply branch pipe 11, enter from the water inlet of air conditioning terminal 3 port
Enter inside air conditioning terminal 30, then flowed out from the water outlet port of air conditioning terminal 3, return to return main 20 through return branch 21, then
Water pump 60 is arrived again at after air-conditioner host is handled.The current that water supply branch pipe 11, air conditioning terminal 30 and return branch 21 are formed follow
Endless path forms loop.At present, most of central air conditioner systems are all supplied water using constant flow or according to the temperature for water return pipeline
Difference or pressure difference control output, the excessive situation of output are likely to occur in underload, so as to cause the waste of energy.And
And be possible to some loops and already exceed specified output, and some loops are increased or subtracted by water pump also in Underflow Status
Small water can not make the loop more than specified output reduce output, and the loop of Underflow Status can not be made to improve output,
Prevent the output of each loop from reaching Optimal Control, base load requirement can neither be met, there is also waste, it is impossible to reaches
The purpose of energy-conservation.
The content of the invention
To solve above technical problem, the present invention proposes a kind of air-conditioner water system integrated pump valve control device and controlling party
Method.
Air-conditioner water system integrated pump valve control device of the present invention, including controller, the controller include being sequentially connected connecing
Energy valve information acquisition unit, index circuit selecting unit；The energy valve information acquisition unit and at least one intelligence
Energy valve is connected, and obtains the valve seat opening value of Intelligent Energy valve；The index circuit selecting unit is according to each intelligent energy
The valve seat opening value of amount valve determines index circuit, exports the valve seat opening value of index circuit；The pump group frequency-variable controller
Adjustment frequency is calculated according to the valve seat opening value of index circuit, the motor of frequency transmission feed pump will be adjusted.
Air-conditioner water system integrated pump valve control method of the present invention, including each loop aperture is obtained by each Intelligent Energy valve
Value；Index circuit is determined according to each loop opening value；Adjustment frequency is calculated according to the opening value of index circuit, by adjustment frequency
Rate sends the motor of feed pump.
The present invention is based on Intelligent Energy valve, the opening information of valve body can accurately and be easily obtained, from Intelligent Energy valve
Valve seat opening value is obtained, index circuit is determined according to each loop opening value, is calculated and adjusted according to the opening value of index circuit
Frequency, making pump motor, the present invention carries out VFC using index circuit as foundation, to water pump according to adjustment frequency run,
The opening value of index circuit is set to reach more rational open range, and the present invention is repeated cyclically so that each loop stream
Amount and load distribution according to need, the energy-saving effect being optimal.
Brief description of the drawings
Fig. 1 is existing central air conditioner system structural representation；
Fig. 2 is air-conditioner water system integrated pump valve control device first preferred embodiment schematic diagram of the present invention；
Fig. 3 is air-conditioner water system integrated pump valve control device of the present invention second preferred embodiment schematic diagram；
Fig. 4 is air-conditioner water system integrated pump valve control device controller preferred embodiment schematic diagram of the present invention；
Fig. 5 is air-conditioner water system integrated pump valve control method first preferred embodiment schematic diagram of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing to of the invention real
The technical scheme applied in example is clearly and completely described, it is clear that described embodiment is only that a present invention part is implemented
Example, rather than whole embodiments.
Air-conditioner water system integrated pump valve control device of the present invention, as shown in Figure 2 and Figure 3, including controller 70, the control
Device is connected with least one Intelligent Energy valve 41, and the controller 70 is connected with water pump 60；The controller 70 obtains intelligence
The valve seat opening value of energy energy valve 41, adjustment frequency is calculated according to the valve seat opening value of each Intelligent Energy valve 41, will adjustment frequency
Rate sends the motor of feed pump 60.
The controller is connected by 485 buses with least one Intelligent Energy valve 41.Controller of the present invention and intelligence
It can be both connected between energy valve 41 by 485 buses, netting twine (twisted-pair feeder, coaxial cable or optical cable) phase can also be passed through
Connection.
The Intelligent Energy valve 41 be connected on water supply branch pipe or and return branch on.The Intelligent Energy valve 41 is energy
The general name of the Intelligent water valve of valve position, energy consumption, flow, temperature differential information etc. is enough provided, relative to two-port valve, it can be to control centre
Sending valve position, energy consumption, flow, temperature differential information etc., it is the core node that modern central air-conditioning realizes intelligent monitoring.Pass through intelligent energy
Amount valve 41 can accurately control the load, flow, the temperature difference of this loop or end, play a part of distribution according to need.
Preferably, the controller 70 includes index circuit selecting unit 74, for according to each Intelligent Energy valve
Valve seat opening value determines index circuit, exports the valve seat opening value of index circuit.
The determination index circuit is in the following ways：Maximum loop in the valve seat opening value of each Intelligent Energy valve
It is possible index circuit to think the loop, and when index circuit if possible is one, then the loop is least favorable ring
Road.
Preferably, when two or more possible index circuits be present, according to Intelligent Energy valve distance position
Determination index circuit is put, that is, it is index circuit to select the Intelligent Energy valve loop farther from water pump 60.
It is, in general, that when installing Intelligent Energy valve, the numbering of Intelligent Energy valve and installation site can be recorded, this
In embodiment, the numbering of Intelligent Energy valve and corresponding installation site record are stored in the memory block of controller, when two or two
It is individual more than possible index circuit when, can according to the numbering of Intelligent Energy valve search corresponding to installation site, so as to true
Which fixed Intelligent Energy valve is farther from water pump, so that it is determined that index circuit.
Preferably, the controller 70 includes pump group frequency-variable controller 65, as shown in Figure 4；
Preferably, pump group frequency-variable controller 65 is provided between the controller 70 and water pump 60, as shown in Figure 2；
Preferably, pump group frequency-variable controller 65 is provided among the water pump 60, as shown in Figure 3；
Above-mentioned pump group frequency-variable controller 65 calculates adjustment frequency according to the valve seat opening value of index circuit；I.e. if least
The valve seat opening value of sharp loop then improves a frequency level, if the valve position of index circuit more than the first aperture threshold values K1
Opening value the second aperture threshold values K2, then reduce a frequency level；If the valve seat opening value of index circuit is in the second threshold values
Between K2 and the first threshold values K1, then frequency level does not do and changed.Above-mentioned first aperture threshold values K1 is more than the second aperture threshold values K2.The
One aperture threshold values K1 can be using the scope of arranges value as 85%-100%, and the value scope that the second aperture threshold values K2 can be set is
75%-90%, it is preferable that K1 is arranged to 90%, K2 is arranged to 85%.Above-mentioned pump group frequency-variable controller 65 is used to control
At least 1 water pump, it is, in general, that more water pumps, i.e. pump group can be controlled simultaneously.
The frequency of one grade is specially how many, can as the case may be depending on, typically, can be according to motor maximum work
Working frequency is configured, such as, can be the 10% of motor maximum operation frequency, for example frequency reduces grade, then may be used
It is similar with this with the reduction by 10%, etc. on the basis of present operating frequency.
Preferably, the air-conditioner water system integrated pump valve control device includes timing unit 72, for setting timing, when fixed
When controller work is waken up when reaching.It is, in general, that in the 65 output adjustment frequency conversion of pump group frequency-variable controller, to timing unit 72
Timing length is write, the timing length of timing unit 72 can be set to fixed value, for example be set to give tacit consent to 5-30 points of timing length
Clock, but because the end of central air conditioner system has diversity, installation environment is complicated, and the most happy festival time can not be played by being set to fixed value
Can effect.
Preferably, the timing length of timing unit 72 can adaptively be set, including：
Tf=Tp×β
Wherein, TfRepresent this timing length, TpAcquiescence timing length is represented, β represents duration Dynamic gene, and C is represented may
Index circuit quantity, K represent index circuit opening value, K1 represent the first aperture threshold values, K2 represent the second aperture valve
Value, K1>K2.
In above-mentioned β formula, duration Dynamic gene is then arranged to by index circuit quantity if possible more than 2
0.5；Index circuit quantity if possible is 1 and the opening value of the index circuit is between K1 and K2, then duration
Dynamic gene is arranged to 1, is now in a relatively long timing length, during the timing length, present invention control
Device is stopped, and when timing length reaches, controller is just waken up；Index circuit quantity if possible be 1 and this most
The opening value of unfavorable loop is more than K1 or less than K2, then duration Dynamic gene is arranged to 0, that is to say it is without timing, immediately
Carry out the energy valve acquisition of information of next round and carry out subsequent process, until index circuit opening value reaches appropriate area
Between, i.e. [K2, K1] section.
The present invention is based on Intelligent Energy valve, the opening information of valve body can accurately and be easily obtained, from Intelligent Energy valve
Valve seat opening value is obtained, index circuit is determined according to each loop opening value, is calculated and adjusted according to the opening value of index circuit
Frequency, making pump motor, the present invention carries out VFC using index circuit as foundation, to water pump according to adjustment frequency run,
The opening value of index circuit is set to reach more rational open range, and the present invention is repeated cyclically so that each loop stream
Amount and load distribution according to need, the energy-saving effect being optimal.
Air-conditioner water system integrated pump valve control method of the present invention, as shown in figure 5, including：
Step A, each loop opening value is obtained by each Intelligent Energy valve
Step B, index circuit is determined according to each loop opening value
Step C, adjustment frequency is calculated according to the opening value of index circuit
Step D, the motor of frequency transmission feed pump will be adjusted
Step E, water pump supplies water according to adjustment frequency pumping
The Intelligent Energy valve be connected on water supply branch pipe or and return branch on.The Intelligent Energy valve is to carry
For the general name of the Intelligent water valve of valve position, energy consumption, flow, temperature differential information etc., relative to two-port valve, it can send to control centre
Valve position, energy consumption, flow, temperature differential information etc., it is the core node that modern central air-conditioning realizes intelligent monitoring.Pass through Intelligent Energy valve
The load, flow, the temperature difference of this loop or end can be accurately controlled, plays a part of distribution according to need.
It can be both connected between controller of the present invention and Intelligent Energy valve by 485 buses, can also be (double by netting twine
Twisted wire, coaxial cable or optical cable) it is connected.
It is described to determine index circuit in the following ways according to each loop opening value：Choose the valve of each Intelligent Energy valve
Maximum loop thinks that the loop is possible index circuit in the opening value of position, and index circuit if possible is one
When, then the loop is index circuit.
Preferably, when two or more possible index circuits be present, according to Intelligent Energy valve distance position
Determination index circuit is put, that is, it is index circuit to select the Intelligent Energy valve loop farther from water pump.
It is, in general, that when installing Intelligent Energy valve, the numbering of Intelligent Energy valve and installation site can be recorded, this
In embodiment, the numbering of Intelligent Energy valve and corresponding installation site record are stored in the memory block of controller, when two or two
It is individual more than possible index circuit when, can according to the numbering of Intelligent Energy valve search corresponding to installation site, so as to true
Which fixed Intelligent Energy valve is farther from water pump, so that it is determined that index circuit.
It is described that frequency conversion amplitude, including if the valve seat opening value of index circuit are adjusted according to the opening value of index circuit
More than the first aperture threshold values K1, then a frequency level is improved, if valve seat opening value the second aperture threshold values of index circuit
K2, then reduce a frequency level；If the valve seat opening value of index circuit between the second threshold values K2 and the first threshold values K1,
Then frequency level does not do and changed.Above-mentioned first aperture threshold values K1 is more than the second aperture threshold values K2.First aperture threshold values K1 can be set
The scope for putting value is 85%-100%, and the value scope that the second aperture threshold values K2 can be set is 75%-90%, it is preferable that will
K1 is arranged to 90%, and K2 is arranged into 85%.
The frequency of one grade is specially how many, can as the case may be depending on, typically, can be according to motor maximum work
Working frequency is configured, such as, can be the 10% of motor maximum operation frequency, for example frequency reduces grade, then may be used
It is similar with this with the reduction by 10%, etc. on the basis of present operating frequency.Preferably, include starting timing after step c
Step, for setting timing, start next operation, i.e. repeat step A-E when being timed to and reaching.
Timing length can be set to fixed value, for example be set to give tacit consent to timing length 5-30 minutes, but due to central air-conditioning system
The end of system has diversity, and installation environment is complicated, and optimum energy-saving effect can not be played by being set to fixed value.
Preferably, the duration of timing can adaptively be set, including：
Tf=Tp×β
Wherein, TfRepresent this timing length, TpAcquiescence timing length is represented, β represents duration Dynamic gene, and C is represented may
Index circuit quantity, K represent index circuit opening value, K1 represent the first aperture threshold values, K2 represent the second aperture valve
Value, K1>K2.
In above-mentioned β formula, duration Dynamic gene is then arranged to by index circuit quantity if possible more than 2
0.5；Index circuit quantity if possible is 1 and the opening value of the index circuit is between K1 and K2, then duration
Dynamic gene is arranged to 1, is now in a relatively long timing length, during the timing length, present invention control
Device is stopped, and when timing length reaches, controller is just waken up；Index circuit quantity if possible be 1 and this most
The opening value of unfavorable loop is more than K1 or less than K2, then duration Dynamic gene is arranged to 0, that is to say it is without timing, immediately
The energy valve acquisition of information of next round, i.e. step A are carried out, and then carries out subsequent step, until index circuit opening value reaches
To appropriate section, i.e. [K2, K1] section.
The present invention is based on Intelligent Energy valve, the opening information of valve body can accurately and be easily obtained, from Intelligent Energy valve
Valve seat opening value is obtained, index circuit is determined according to each loop opening value, is calculated and adjusted according to the opening value of index circuit
Frequency, making pump motor, the present invention carries out VFC using index circuit as foundation, to water pump according to adjustment frequency run,
The opening value of index circuit is set to reach more rational open range, and the present invention is repeated cyclically so that each loop stream
Amount and load distribution according to need, the energy-saving effect being optimal.
Apparatus of the present invention have similitude with method in Partial Feature, have the specific implementation of the feature of similitude
Can mutually it be cited.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct the hardware of correlation to complete by program, the program can be stored in a computer-readable recording medium, storage
Medium can include：ROM, RAM, disk or CD etc..
Embodiment provided above, the object, technical solutions and advantages of the present invention are carried out with further detailed description, institute
It should be understood that embodiment provided above is only the preferred embodiment of the present invention, be not intended to limit the invention, it is all
Any modification, equivalent substitution and improvements made for the present invention etc., should be included in the present invention within the spirit and principles in the present invention
Protection domain within.
Claims (10)
1. air-conditioner water system integrated pump valve control device, including controller, it is characterised in that：The controller includes being sequentially connected
Energy valve information acquisition unit, the index circuit selecting unit connect；The energy valve information acquisition unit and at least one intelligence
Energy energy valve is connected, and obtains the valve seat opening value of Intelligent Energy valve；The index circuit selecting unit is according to each intelligence
The valve seat opening value of energy valve determines index circuit, exports the valve seat opening value of index circuit；The pump group VFC
Device calculates adjustment frequency according to the valve seat opening value of index circuit, will adjust the motor of frequency transmission feed pump.
2. air-conditioner water system integrated pump valve control device according to claim 1, it is characterised in that：The Intelligent Energy valve connects
Be connected on water supply branch pipe or and return branch on.
3. air-conditioner water system integrated pump valve control device according to claim 1, it is characterised in that：The control device includes
Pump group frequency-variable controller, adjustment frequency is calculated according to the valve seat opening value of index circuit, frequency will be adjusted and send feed pump
Motor；The pump group frequency-variable controller is set one of in the following ways：It is arranged among controller, is selected with index circuit
Unit is connected；Or it is arranged between controller and water pump；Or it is arranged among water pump.
4. air-conditioner water system integrated pump valve control device according to claim 1, it is characterised in that：The index circuit choosing
Select unit and determine that index circuit, including the valve position of each Intelligent Energy valve are opened according to the valve seat opening value of each Intelligent Energy valve
Maximum loop thinks that the loop is possible index circuit in angle value, when index circuit if possible is one, then
The loop is index circuit；It is far and near according to Intelligent Energy valve when possible index circuit has two or more
Position determines index circuit, that is, it is index circuit to select the Intelligent Energy valve loop farther from water pump.
5. air-conditioner water system integrated pump valve control device according to claim 1, it is characterised in that：The pump group VFC
If device calculates the valve seat opening value of adjustment frequency including index circuit more than the according to the valve seat opening value of index circuit
One aperture threshold values K1, then a frequency level is improved, if valve seat opening value the second aperture threshold values K2 of index circuit, drops
A low frequency level；If the valve seat opening value of index circuit is between the second threshold values K2 and the first threshold values K1, frequency
Grade, which is not done, to be changed.
6. air-conditioner water system integrated pump valve control device according to claim 1, it is characterised in that：The control device includes
Timing unit, it is connected with controller, for setting timing, controller work is waken up when being timed to and reaching；The duration of timing is certainly
Adapt to set, including：
Tf=Tp×β
Wherein, TfRepresent this timing length, TpExpression acquiescence timing length, β expression duration Dynamic genes, C expressions are possible most
Unfavorable loop quantity, K represent the opening value of index circuit, and K1 represents the first aperture threshold values, and K2 represents the second aperture threshold values, K1
>K2。
7. air-conditioner water system integrated pump valve control method, it is characterised in that：Opened including obtaining each loop by each Intelligent Energy valve
Angle value；Index circuit is determined according to each loop opening value；Whole frequency is calculated according to the opening value of index circuit, by adjustment frequency
Rate sends the motor of feed pump.
8. air-conditioner water system integrated pump valve control method according to claim 7, it is characterised in that：It is described to be opened according to each loop
Angle value determines that index circuit includes：Choose loop maximum in the valve seat opening value of each Intelligent Energy valve and think that the loop is
Possible index circuit, when index circuit if possible is one, then the loop is index circuit；When it is possible most
When unfavorable loop has two or more, index circuit is determined according to Intelligent Energy valve distance position, i.e. selection intelligence
The energy valve loop farther from water pump is index circuit.
9. air-conditioner water system integrated pump valve control method according to claim 7, it is characterised in that：It is described according to least favorable ring
The opening value on road calculates whole frequency, including if the valve seat opening value of index circuit then improves more than the first aperture threshold values K1
One frequency level, if valve seat opening value the second aperture threshold values K2 of index circuit, reduce a frequency level；If
The valve seat opening value of index circuit is between the second threshold values K2 and the first threshold values K1, then frequency level does not do and changed.
10. air-conditioner water system integrated pump valve control method according to claim 7, it is characterised in that：Sent out by adjustment frequency
After giving the motor of water pump, opening timing, start next operation when being timed to and reaching, that is, repeat the above steps；Timing when
Long adaptive setting, including：
Tf=Tp×β
Wherein, TfRepresent this timing length, TpExpression acquiescence timing length, β expression duration Dynamic genes, C expressions are possible most
Unfavorable loop quantity, K represent the opening value of index circuit, and K1 represents the first aperture threshold values, and K2 represents the second aperture threshold values, K1
>K2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710799436.5A CN107588504B (en) | 2017-09-07 | 2017-09-07 | Pump-valve integrated control device and control method for air-conditioning water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710799436.5A CN107588504B (en) | 2017-09-07 | 2017-09-07 | Pump-valve integrated control device and control method for air-conditioning water system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107588504A true CN107588504A (en) | 2018-01-16 |
| CN107588504B CN107588504B (en) | 2020-07-14 |
Family
ID=61050261
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|---|---|---|---|
| CN201710799436.5A Active CN107588504B (en) | 2017-09-07 | 2017-09-07 | Pump-valve integrated control device and control method for air-conditioning water system |
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| CN112665237A (en) * | 2020-12-17 | 2021-04-16 | 珠海格力电器股份有限公司 | Chilled water system flow control method and device and chilled water system |
| CN114576812A (en) * | 2021-12-01 | 2022-06-03 | 华信咨询设计研究院有限公司 | Variable flow control method and system for water supply temperature time-varying cold water system |
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|---|---|
| CN107588504B (en) | 2020-07-14 |
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