CN106642577B - Water rationing vari- able flow control system based on comfort level - Google Patents
Water rationing vari- able flow control system based on comfort level Download PDFInfo
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- CN106642577B CN106642577B CN201611208362.5A CN201611208362A CN106642577B CN 106642577 B CN106642577 B CN 106642577B CN 201611208362 A CN201611208362 A CN 201611208362A CN 106642577 B CN106642577 B CN 106642577B
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- 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
-
- 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
-
- 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
-
- 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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of water rationing vari- able flow control system based on comfort level, is related to air-conditioning technical field, supplies water for solving for the problem that the big system partitioning of air-conditioning, is difficult to meet economy or the comfort level requirement with energy using traditional control system.Water supply vari- able flow control system provided in an embodiment of the present invention includes supply backwater temperature difference calculator, supply backwater temperature difference controller, overtemperature room ratio calculation device, overtemperature room ratio controller, pressure of supply water setting apparatus, pressure of supply water controller, actuator and related measure and control instrument.Water rationing vari- able flow control system provided by the invention based on comfort level is used for central air conditioner system.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of water rationing vari- able flow control systems based on comfort level
System.
Background technique
Multiple branch's energy supplies region (i.e. subregion) can be divided by water supply branch in the big system of air-conditioning, water rationing can usually lead to
Quenched, tune amount is crossed to realize, under using tune amount means, the prior art generally according to for return water differential pressure, supply backwater temperature difference to confession
Water flow is adjusted.However, since there are serious lag, subregion room terminal temperatures, temperature controller operation for the adjustment process
The information such as state are not fully used, and perfect not enough for energy control function, be easy to cause excessively energy supply or
Person is to be difficult to meet the problem of comfort level requires.
Summary of the invention
The water rationing vari- able flow control system based on comfort level that the purpose of the present invention is to provide a kind of, for solving needle
It supplies water to the big system partitioning of air-conditioning, is difficult to meet using traditional control system and be asked with what the economy or comfort level of energy required
Topic.
Water rationing vari- able flow control system provided by the invention based on comfort level includes:
1 He of input of supply backwater temperature difference calculator, supply water temperature and return water temperature respectively as supply backwater temperature difference calculator
The difference of input 2, the supply water temperature and the return water temperature is as supply backwater temperature difference, and the supply backwater temperature difference is as supply backwater temperature difference meter
Calculate the output of device；
Supply backwater temperature difference controller, the output of the supply backwater temperature difference calculator is as the defeated of the supply backwater temperature difference controller
Enter, and the measured value as the supply backwater temperature difference controller, which uses pid control algorithm；
Overtemperature room ratio calculation device, room actual temperature, room set temperature and the temperature control in each room in subregion
Input of the system running state processed respectively as the overtemperature room ratio calculation device；The overtemperature room ratio calculation device is used for,
The room actual temperature in the room and the difference of room set temperature reach the control of the temperature in preset threshold value and the room
In the case that system is in operating status, which is defined as overtemperature room, calculates the sum in overtemperature room and temperature in subregion
The ratio for spending control system room sum in operating status, as overtemperature room ratio；The overtemperature room ratio is as super
The output of ratio calculation device between hot house,
Overtemperature room ratio controller, the output of the overtemperature room ratio calculation device is as overtemperature room ratio controller
Input, and the measured value as overtemperature room ratio controller, overtemperature room ratio controller calculated using PID control
Method；
Pressure of supply water setting apparatus, the output of supply backwater temperature difference controller and the output of overtemperature room ratio controller are made respectively
For the input 1 and input 2 of the pressure of supply water setting apparatus；Read group total is weighted to the input 1 and input 2, is obtained for hydraulic pressure
Power setting value carries out upper and lower amplitude limiting processing to the pressure of supply water setting value, pressure of supply water setting range is obtained, as the water supply
The output of pressure setting apparatus；
Pressure of supply water controller；The output of the pressure of supply water setting apparatus and the water supply that pressure of supply water is measured
Input 1 and input 2 of the pressure measurement signal respectively as the pressure of supply water controller, wherein the pressure of supply water setting apparatus
Export the setting value as the pressure of supply water controller, survey of the pressure of supply water measuring signal as the pressure of supply water controller
Magnitude, the pressure of supply water controller use pid control algorithm；And
Actuator, input of the output of the pressure of supply water controller as the actuator, the actuator adjust corresponding point
The water supply flow in area.
The water rationing vari- able flow control system based on comfort level provided according to the present invention can obtain following beneficial to effect
Fruit:
Reasonable supply backwater temperature difference not only represents economy, also has an impact to comfort level.The temperature difference is too small, and system energy efficiency is low
Under, conversely, it is difficult to ensure the requirement of comfort level, and water supply difference variation is slower, is the unfavorable factor controlled it,
Supply backwater temperature difference controller of the present invention and pressure of supply water controller use cascade control system, can effectively overcome entire circuit stagnant
Big problem afterwards is reflected in the variation of pressure of supply water when air conditioner load variation quickly first, and pressure of supply water controller can be automatic
It is adjusted, so as to guarantee that supply backwater temperature difference does not have too big fluctuation to a certain extent.
Also, on the basis of being automatically controlled for pressure of return water according to load variations, when supply backwater temperature difference changes,
Because its variation be it is lesser, supply backwater temperature difference controller can be adjusted using slower speed, this just can adapt to
It lags big feature, and the output of supply backwater temperature difference controller can change the setting value of pressure of supply water controller automatically, further real
The accurate adjustment of the existing temperature difference；
In addition, the bound exported by setting supply backwater temperature difference controller, is equal to setting pressure of supply water bound, energy
The reasonability for enough guaranteeing water rationing avoids the insufficient with energy of heating power least favorable circuit, and pressure of supply water is too low to will lead to waterpower mistake
Weighing apparatus, the i.e. maximum circuit insufficient water of resistance.
Finally, introducing overtemperature room ratio controller, the reasonability of pressure of supply water setting value is corrected.It is obtained by building control system
The virtual condition for taking each room comfort level in subregion, so that water rationing is more reasonable.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of central air conditioner system provided by the embodiment of the present invention.
Fig. 2 is the structural block diagram of water supply vari- able flow control system provided by the embodiment of the present invention.
Specific embodiment
The water rationing vari- able flow control system based on comfort level that embodiment provides in order to further illustrate the present invention, under
Face is described in detail in conjunction with Figure of description.
As shown in Figure 1, the embodiment of the present invention provides a kind of subregion vari- able flow control system based on comfort level, it is applied to
In air-conditioning system shown in FIG. 1, it (is 1~subregion of subregion m) in Fig. 1, each subregion includes which, which covers multiple subregions,
(each subregion includes 1~room of room n) in Fig. 1, and an air-conditioning is equipped in each room, which is configured in multiple rooms
Temperature controller, the temperature controller is for controlling the actual temperature in the room.Corresponding each subregion is equipped with frequency conversion
Pump, the variable frequency pump are used to control the water supply flow in corresponding subregion, in the present embodiment, variable frequency pump P201 are arranged in subregion 1, point
Variable frequency pump P202 is set in area m.For cold season, by water cooler to each water rationing, provided whereby into each subregion room
Cooling capacity.
By taking subregion 1 as an example, supply water temperature T1, return water temperature T2, pressure of supply water P.For i-th in subregion 1
For a room, room actual temperature is TZi, and room set temperature is TZisp, the operation of the temperature control system in room
State is Ri.Specifically, by taking the room 1 in subregion 1 as an example, room actual temperature is TZ1, and room set temperature is TZ1sp,
The operating status of temperature control system in room is R1.
As shown in Fig. 2, water supply vari- able flow control system provided in an embodiment of the present invention includes supply backwater temperature difference calculator D,
Supply backwater temperature difference controller E, overtemperature room ratio calculation device I, overtemperature room ratio controller J, pressure of supply water setting apparatus F are supplied
Hydraulic pressure force controller G, actuator H and related measure and control instrument (not shown).
In above-mentioned supply backwater temperature difference calculator D, supply water temperature T1, return water temperature T2 are calculated respectively as supply backwater temperature difference
The input 1 and input 2 of device D, the difference between the two is referred to as supply backwater temperature difference, and the supply backwater temperature difference is as supply backwater temperature difference calculator D's
Output.
In above-mentioned supply backwater temperature difference controller E, the output of supply backwater temperature difference calculator D is as supply backwater temperature difference controller
The input of E, also, measured value of the output of supply backwater temperature difference calculator D as supply backwater temperature difference controller E, for return water temperature
Difference controller E uses pid control algorithm or other control algolithms.
In above-mentioned overtemperature room ratio calculation device I, the room actual temperature TZi in each room in subregion, room are set
Temperature TZisp and temperature control system operating status Ri are determined respectively as the input of overtemperature room ratio calculation device I, in some room
Between room actual temperature TZi and the difference of room set temperature TZisp reach preset threshold value and temperature control system is in
In the case where operating status, which is denoted as overtemperature room, and then calculates the sum and temperature in the overtemperature room in the subregion
The ratio of control system room sum in operating status, is known as overtemperature room ratio for the ratio, the overtemperature room ratio
Output as overtemperature room ratio calculation device I.
In above-mentioned overtemperature room ratio controller J, the output of overtemperature room ratio calculation device I is as overtemperature room ratio
The input of controller J, and the measured value as overtemperature room ratio controller J, overtemperature room ratio controller J use PID
Control algolithm or other control algolithms.
In above-mentioned pressure of supply water setting apparatus F, the output of supply backwater temperature difference controller E is as pressure of supply water setting apparatus F
Input 1, input 2 of the output as pressure of supply water setting apparatus F of overtemperature room ratio controller J to the input 1 and input
2 are weighted read group total, obtain pressure of supply water setting value Psp1.Specifically, in the present embodiment, pressure of supply water setting value
Psp1=inputs 1 × k1+ and inputs 2 × k2, takes k1=0.8, and k2=0.2, Psp1 obtain pressure of supply water by upper and lower amplitude limiting processing
Setting range Psp.Wherein, the upper limit value of pressure of supply water setting range Psp is the pressure of supply water setting value of system busy hour,
Pressure of supply water setting value when lower limit value is system minimum load, upper limit value and lower limit value are obtained according to operating experience, thus
Output of the pressure of supply water setting range Psp arrived as pressure of supply water setting apparatus F.
In above-mentioned pressure of supply water controller G, output the setting as pressure of supply water controller G of pressure of supply water setting apparatus F
Definite value, measured value of the pressure of supply water measuring signal as pressure of supply water controller G, pressure of supply water controller G are calculated using PID control
Method or other control algolithms.
Input signal of the output as above-mentioned actuator H of pressure of supply water controller G, in actuator H corresponding diagram 1
Variable frequency pump or regulating valve can be used in P201 or P202, actuator H.
The water rationing vari- able flow control system based on comfort level provided according to embodiments of the present invention can be realized as follows
The utility model has the advantages that
Firstly, reasonable supply backwater temperature difference not only represents economy, also have an impact to comfort level.The temperature difference is too small, system energy
Effect is low, conversely, be difficult to ensure the requirement of comfort level, and water supply difference variation is slower, be control it is unfavorable
Factor, supply backwater temperature difference controller of the present invention and pressure of supply water controller use cascade control system, can effectively overcome entire
Circuit lags big problem, when air conditioner load variation, is reflected in the variation of pressure of supply water, pressure of supply water controller quickly first
It can be adjusted automatically, so as to guarantee that supply backwater temperature difference does not have too big fluctuation to a certain extent.
Also, on the basis of being automatically controlled for pressure of return water according to load variations, when supply backwater temperature difference changes,
Because its variation be it is lesser, supply backwater temperature difference controller can be adjusted using slower speed, this just can adapt to
It lags big feature, and the output of supply backwater temperature difference controller can change the setting value of pressure of supply water controller automatically, further real
The accurate adjustment of the existing temperature difference；
In addition, the bound exported by setting supply backwater temperature difference controller, is equal to setting pressure of supply water bound, energy
The reasonability for enough guaranteeing water rationing avoids the use in heating power least favorable circuit that from capable of requiring, and pressure of supply water is too low to will lead to waterpower mistake
Weighing apparatus, the i.e. maximum circuit insufficient water of resistance.
Finally, introducing overtemperature room ratio controller, the reasonability of pressure of supply water setting value is corrected.In the present embodiment,
The setting value of overtemperature room ratio controller can in 0%~5% range value, pass through building control system obtain subregion in each room
Between comfort level virtual condition, Lai Jiaozheng pressure of supply water setting value, so that water rationing is more reasonable.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (3)
1. a kind of water rationing vari- able flow control system based on comfort level is applied to the big system of air-conditioning, which is characterized in that packet
It includes:
The input of supply backwater temperature difference calculator, water rationing temperature and subregion return water temperature respectively as supply backwater temperature difference calculator
1 and input 2, the difference of the water rationing temperature and the subregion return water temperature is as supply backwater temperature difference, the supply backwater temperature difference conduct
The output of supply backwater temperature difference calculator；
Supply backwater temperature difference controller, input of the output of the supply backwater temperature difference calculator as the supply backwater temperature difference controller,
And the measured value as the supply backwater temperature difference controller, the supply backwater temperature difference controller use pid control algorithm；
Overtemperature room ratio calculation device, the room actual temperature, room set temperature in each room and temperature control system in subregion
Input of the operating status of uniting respectively as the overtemperature room ratio calculation device；The overtemperature room ratio calculation device is used for, described
The room actual temperature in room and the difference of room set temperature reach the temperature control system in preset threshold value and the room
In the case where in operating status, which is defined as overtemperature room, calculates the sum in overtemperature room and temperature control in subregion
The ratio of system processed room sum in operating status, as overtemperature room ratio；The overtemperature room ratio is as overtemperature room
Between ratio calculation device output,
Overtemperature room ratio controller, the output of the overtemperature room ratio calculation device is as the defeated of overtemperature room ratio controller
Enter, and the measured value as overtemperature room ratio controller, overtemperature room ratio controller uses pid control algorithm；
Pressure of supply water setting apparatus, the output of supply backwater temperature difference controller and the output of overtemperature room ratio controller are respectively as this
The input 1 and input 2 of pressure of supply water setting apparatus；Read group total is weighted to the input 1 and input 2, pressure of supply water is obtained and sets
Definite value carries out upper and lower amplitude limiting processing to the pressure of supply water setting value, pressure of supply water setting range is obtained, as the pressure of supply water
The output of setting apparatus；
Pressure of supply water controller；The output of the pressure of supply water setting apparatus and the pressure of supply water that pressure of supply water is measured
Input 1 and input 2 of the measuring signal respectively as the pressure of supply water controller, wherein the output of the pressure of supply water setting apparatus
As the setting value of the pressure of supply water controller, measurement of the pressure of supply water measuring signal as the pressure of supply water controller
Value, the pressure of supply water controller use pid control algorithm；And
Actuator, input of the output of the pressure of supply water controller as the actuator, the actuator adjust corresponding subregion
Water supply flow.
2. water supply vari- able flow control system according to claim 1, which is characterized in that set the pressure of supply water setting value as
Psp1, then the input 1 of the Psp1 and the pressure of supply water setting apparatus and input 2 meet: Psp1=1 × k1+ of input input 2 ×
K2, wherein k1=0.8, k2=0.2.
3. water supply vari- able flow control system according to claim 1 or 2, which is characterized in that the actuator uses frequency conversion
Pump or regulating valve.
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| CN201611208362.5A CN106642577B (en) | 2016-12-23 | 2016-12-23 | Water rationing vari- able flow control system based on comfort level |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611208362.5A CN106642577B (en) | 2016-12-23 | 2016-12-23 | Water rationing vari- able flow control system based on comfort level |
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| CN106642577A CN106642577A (en) | 2017-05-10 |
| CN106642577B true CN106642577B (en) | 2019-03-29 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016008782A (en) * | 2014-06-25 | 2016-01-18 | アズビル株式会社 | Air conditioning system and air conditioning control method |
| CN105864967A (en) * | 2016-04-11 | 2016-08-17 | 九州方圆实业控股(集团)有限公司 | Integrated optimization energy-saving system of central air-conditioning refrigeration station |
| CN205536295U (en) * | 2016-02-01 | 2016-08-31 | 大连中盈机电工程有限公司 | Energy -conserving integrated system in cold and hot source of building |
| CN205717751U (en) * | 2016-04-29 | 2016-11-23 | 刘定华 | A kind of efficient control system of central air-conditioning Cooling and Heat Source machine room |
| CN106196515A (en) * | 2016-08-31 | 2016-12-07 | 深圳达实智能股份有限公司 | The energy efficiency controlling method of central air conditioner system and device |
-
2016
- 2016-12-23 CN CN201611208362.5A patent/CN106642577B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016008782A (en) * | 2014-06-25 | 2016-01-18 | アズビル株式会社 | Air conditioning system and air conditioning control method |
| CN205536295U (en) * | 2016-02-01 | 2016-08-31 | 大连中盈机电工程有限公司 | Energy -conserving integrated system in cold and hot source of building |
| CN105864967A (en) * | 2016-04-11 | 2016-08-17 | 九州方圆实业控股(集团)有限公司 | Integrated optimization energy-saving system of central air-conditioning refrigeration station |
| CN205717751U (en) * | 2016-04-29 | 2016-11-23 | 刘定华 | A kind of efficient control system of central air-conditioning Cooling and Heat Source machine room |
| CN106196515A (en) * | 2016-08-31 | 2016-12-07 | 深圳达实智能股份有限公司 | The energy efficiency controlling method of central air conditioner system and device |
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