CN109237713B - Water multi-connected unit operation control method and device, medium and water multi-connected air conditioning system - Google Patents
Water multi-connected unit operation control method and device, medium and water multi-connected air conditioning system Download PDFInfo
- Publication number
- CN109237713B CN109237713B CN201811113464.8A CN201811113464A CN109237713B CN 109237713 B CN109237713 B CN 109237713B CN 201811113464 A CN201811113464 A CN 201811113464A CN 109237713 B CN109237713 B CN 109237713B
- Authority
- CN
- China
- Prior art keywords
- temperature
- water
- outlet
- unit
- outlet water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to a water multi-connected unit operation control method, a water multi-connected unit operation control device, a medium and a water multi-connected air conditioning system. The method comprises the following steps: acquiring environmental temperature data acquired from an area where a terminal device is located; obtaining the load rate of the internal machines of the water multi-connected unit according to the environmental temperature data, and obtaining the set outlet water temperature according to the load rate of the internal machines; and controlling the temperature of the outlet water according to the set outlet water temperature. The internal unit load rate of the water multi-connected unit is calculated through the detected environmental temperature data of the area where the tail end device is located, the water outlet temperature is determined and set according to the internal unit load rate to control the water outlet temperature, linkage control of the unit and the tail end device is achieved, water temperature control is conducted according to actual load, energy waste is reduced, and the problem of asynchronism caused by independent control of a host and the tail end of a traditional water chilling unit is solved, and meanwhile, the reliability of unit control is improved.
Description
Technical Field
The application relates to the technical field of unit control, in particular to a water multi-connected unit operation control method, a water multi-connected unit operation control device, a medium and a water multi-connected air conditioning system.
Background
With the development of science and the continuous progress of society, the water chilling unit is more and more widely applied to the daily work and life of people. The water chiller can be generally divided into a water-cooled type and an air-cooled type according to a refrigeration form, and a water-cooled water chiller unit is adopted in an air conditioning system to output chilled water to cool the indoor space.
Traditional cooling water set includes the host computer and sets up in indoor heat dissipation end, and the host computer carries frozen water to indoor heat dissipation end according to unit staff's control, and the heat dissipation end is according to the adjustment command who uses the user and carries out cooling treatment. Because the host computer and the terminal independent control of heat dissipation respectively, cause the energy waste easily, traditional water unit has the shortcoming that control reliability is low.
Disclosure of Invention
Therefore, it is necessary to provide a water multi-connected unit operation control method, a device, a medium and a water multi-connected air conditioning system, which can improve unit control reliability, for solving the problem of low control reliability of the conventional water unit.
A water multi-connected unit operation control method comprises the following steps:
acquiring environmental temperature data acquired from an area where a terminal device is located;
obtaining the internal machine load rate of the water multi-connected unit according to the environment temperature data, and obtaining a set outlet water temperature according to the internal machine load rate;
and controlling the water outlet temperature according to the set water outlet temperature.
A water multi-connected unit operation control device comprises:
the temperature acquisition module is used for acquiring environmental temperature data acquired from the area where the terminal device is located;
the water temperature calculation module is used for obtaining the internal unit load rate of the water multi-connected unit according to the environment temperature data and obtaining the set outlet water temperature according to the internal unit load rate;
and the water temperature control module is used for controlling the water temperature of the outlet water according to the set outlet water temperature.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring environmental temperature data acquired from an area where a terminal device is located;
obtaining the internal machine load rate of the water multi-connected unit according to the environment temperature data, and obtaining a set outlet water temperature according to the internal machine load rate;
and controlling the water outlet temperature according to the set water outlet temperature.
The water multi-connected air conditioning system comprises a water multi-connected unit and a tail end device connected with the water multi-connected unit, wherein the water multi-connected unit controls the water temperature of outlet water through the method.
According to the water multi-connected unit operation control method, the device, the medium and the water multi-connected air conditioning system, the internal unit load rate of the water multi-connected unit is calculated through the detected environmental temperature data of the area where the end device is located, the set water outlet temperature is determined according to the internal unit load rate to control the water outlet temperature, linkage control of the unit and the end device is achieved, water temperature control is conducted according to actual load, energy waste is reduced, the problem of asynchronization caused by independent control of a host and the end of a traditional water chilling unit is solved, and meanwhile unit control reliability is improved.
Drawings
Fig. 1 is a flowchart of an operation control method of a water multi-connected unit in one embodiment;
fig. 2 is a flowchart for obtaining the load factor of the internal units of the water multi-connected unit according to the environmental temperature data in one embodiment;
FIG. 3 is a flow chart illustrating the control of the outlet water temperature according to the set outlet water temperature in one embodiment;
fig. 4 is a flowchart of an operation control device of a water multi-connected unit in one embodiment;
FIG. 5 is a schematic structural diagram of a water multi-connected air conditioning system according to an embodiment;
FIG. 6 is a schematic diagram illustrating determination of an initial water temperature of a water multi-connected air conditioning system according to an embodiment;
FIG. 7 is a timing diagram illustrating room temperature regulation and load operation in a first phase of a multi-connected water air conditioning system according to an embodiment;
fig. 8 is a timing diagram illustrating room temperature adjustment and load operation in the second stage of the multi-connected water air conditioning system according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, there is provided a method for controlling operation of a water multi-connected unit, as shown in fig. 1, the method including:
step S110: and acquiring environmental temperature data acquired from the area where the terminal device is located.
Specifically, the host of the water multi-connected unit can be connected with the end device, the area where the end device is located can be a closed area such as a room, a processing workshop and the like, and the end device utilizes cold (hot) water generated by the host to heat or refrigerate the area where the end device is located. The environmental temperature of the area where the tail end device is located can be collected through the environmental temperature sensing bulb arranged on the opened tail end device, and the collected environmental temperature data is transmitted to the host machine to be used as a reference basis for controlling the water outlet temperature. For ease of understanding, the following explanation will be given taking the example in which the end device is installed in a room.
Step S120: and obtaining the internal machine load rate of the water multi-connected unit according to the environmental temperature data, and obtaining the set outlet water temperature according to the internal machine load rate.
Specifically, after receiving the ambient temperature data of the room (hereinafter referred to as a boot room) in which the started end device is located, the host calculates the internal load rate by combining the pre-stored parameters, and obtains the set outlet temperature according to the internal load rate. In one embodiment, as shown in fig. 2, the obtaining of the indoor unit load rate of the water multi-connected unit according to the ambient temperature data in step S120 includes steps S122 to S126.
S122, calculating to obtain an actual temperature difference according to the environment temperature data and the user set temperature, specifically, calculating the difference value between the indoor environment temperature of the current startup room and the user set temperature by the host to obtain the actual temperature difference △ T in the startup roomin. The temperature set by the user for the area can be obtained through the end device, the host receives the temperature set by the user and performs temperature difference calculation, or the temperature difference calculation can be performed according to the temperature set by the user and stored in advance.
S124, obtaining a temperature load coefficient according to the comparison reference of the actual temperature difference and the preset temperature difference, and concretely, obtaining the actual temperature difference △ T in the startup room by the host computer through calculationinThereafter, the actual temperature difference △ T is calculatedinThe ratio of the reference △ T to the preset indoor temperature differential,as temperature load factor X in each roomiI.e. Xi＝△TinThe specific value of the temperature difference comparison standard △ T is not unique and can be adjusted according to the actual situation.
S126: and obtaining the load rate of the internal machine according to the temperature load coefficient, the preset host machine refrigerating capacity and the preset tail end device refrigerating capacity. Specifically, the host pre-stores a host cooling capacity W and a single end device cooling capacity WiAnd combining the temperature load coefficients X corresponding to all the starting roomsiEnd device cooling capacity WiThe specific calculation mode of the internal machine load rate α is not unique, in the embodiment, the calculation formula of the internal machine load rate α is α ═ Σ Wi*Xi/W。
Furthermore, the host computer combines the temperature load coefficient X corresponding to each startup roomiThe mode of obtaining the set water temperature by calculation according to the internal load rate α after obtaining the internal load rate α is not unique, and in one embodiment, the step S120 of obtaining the set water temperature according to the internal load rate includes obtaining a corresponding set water temperature according to the internal load rate and a preset load rate-water temperature corresponding relationship, and obtaining the set water temperature according to the pre-stored corresponding relationship after the host machine obtains the internal load rate by calculation by pre-establishing and storing the corresponding relationship between the internal load rate and the water temperature, so as to control the water temperature.
It is understood that the type of the load factor-outlet water temperature correspondence relationship is not exclusive, and may be a quadratic curve equation, for example, a quadratic curve t ═ a α is adopted2The load factor-outlet water temperature corresponding relation can also be a linear equation, for example, the set outlet water temperature t is calculated by adopting a primary curve t ═ b α + c, wherein b and c are linear function coefficientsAnd (4) calculating the water outlet temperature t.
Step S130: and controlling the temperature of the outlet water according to the set outlet water temperature.
And after the host machine calculates the set outlet water temperature t, adjusting the temperature of the outlet water conveyed to the tail end device according to the set outlet water temperature t. It can be understood that after the host obtains the initial water outlet temperature and performs water temperature control, the host can also calculate the target water outlet temperature according to the collected environmental temperature data in real time according to the preset updating period a, and perform water outlet temperature control according to the calculated target water outlet temperature.
Specifically, in one embodiment, as shown in fig. 3, step S130 includes step S132 and step S134.
Step S132: and controlling the water temperature of the outlet water according to the set outlet water temperature until the average value of the difference value between the environmental temperature data of the area where the terminal device is located and the set temperature of the user reaches 0 ℃.
The main machine is in the first stage of controlling the outlet water temperature according to the set outlet water temperature, and the target is adjusted to ensure that the average room temperature difference
The temperature of the started room is controlled on the whole to reach 0 ℃, and the average room temperature difference
Actual room temperature T of the bootstrapped roomActual roomWith user set temperature TSetting roomAfter the initial outlet water temperature is set, the host machine is specifically based on the actual outlet water temperature TActual water outletAnd setting the water outlet temperature TSet water outletWater temperature difference value △ TTemperature of water outletPerforming frequency up-down control on the compressor of the outdoor unit until the average room temperature difference
Reaching 0 ℃, and entering the next step of judgment and regulation.
Step S134: and adjusting the set outlet water temperature according to the temperature change rate of the area with the maximum difference between the environment temperature data and the user set temperature until the maximum difference between the environment temperature data and the user set temperature reaches 0 ℃.
After the first stage control of the main machine is completed, about half of the temperature of the started room reaches the user set temperature, and the other half of the temperature of the room does not reach the user set temperature, at the moment, the main machine enters the second stage adjustment, and the adjustment target is that the maximum value of the actual room temperature difference is △ TActual temperature Max of roomAdjusting the temperature to 0 ℃ to control the temperature of all rooms, wherein the maximum value of the actual room temperature difference is △ TActual temperature Max of roomThe maximum value of the difference value between the environmental temperature data in the started room and the temperature set by the user, and the host computer △ T according to the maximum value of the actual room temperature differenceActual temperature Max of roomThe temperature change rate phi of the water outlet pipe is used for adjusting the set water outlet temperature, and finally the maximum difference value between the environmental temperature data and the set temperature of the user reaches 0 ℃.
In the embodiment, the outlet water temperature is controlled in two stages according to the determined set outlet water temperature, so that the temperature of all the started rooms is gradually controlled, and the control is stable and reliable.
Further, in an embodiment, the step S134 of adjusting the set outlet water temperature according to the temperature change rate of the area where the difference between the environmental temperature data and the user set temperature is the largest includes steps 1 and 2.
Step 1: and when the temperature change rate of the area with the maximum difference between the environmental temperature data and the temperature set by the user is greater than or equal to 0 ℃ per minute, the set outlet water temperature is reduced.
The average room temperature difference is adjusted through the first stage
Then, the maximum value △ T of the actual room temperature difference is judgedActual temperature Max of roomIf the temperature change rate phi of the room is more than or equal to 0 ℃/min, the set outlet water temperature is reduced. In this embodiment, the step 1 of adjusting the set outlet water temperature downward includes: obtaining the temperature change rate and the preset down-regulation change rangeAnd correspondingly regulating the set outlet water temperature according to the obtained change amplitude. Specifically, the host may set different variation ranges corresponding to different down-regulation variation ranges in advance, and extract the corresponding variation range according to the variation range in which the temperature variation rate phi is located to down-regulate the set outlet water temperature.
Step 2: and when the temperature change rate of the area with the maximum difference value between the environmental temperature data and the temperature set by the user is less than 0 ℃ per minute, the set outlet water temperature is adjusted upwards or maintained unchanged.
If the temperature change rate phi is less than 0 ℃/min, the set outlet water temperature is adjusted upwards or kept unchanged according to the actual value of the temperature change rate phi. In this embodiment, the step 2 of increasing or maintaining the set outlet water temperature includes: when the temperature change rate is in a preset maintaining change range, controlling the set outlet water temperature to maintain unchanged; when the temperature change rate is in a preset upper modulation range, the set outlet water temperature is controlled to be adjusted upwards, and the lower limit value of the change range is maintained to be larger than the upper limit value of the upper modulation range. The water temperature can be correspondingly adjusted upwards or kept unchanged according to the change range of the temperature change rate phi.
According to the water multi-connected unit operation control method, the internal machine load rate of the water multi-connected unit is calculated through the detected environment temperature data of the area where the tail end device is located, the set water outlet temperature is determined according to the internal machine load rate to control the water outlet temperature, linkage control of the unit and the tail end device is achieved, water temperature control is conducted according to actual load, energy waste is reduced, the problem of asynchronization caused by independent control of a host and the tail end of a traditional water chilling unit is solved, and meanwhile unit control reliability is improved.
In one embodiment, a water multi-connected unit operation control device is provided, as shown in fig. 4, and includes a temperature acquisition module 110, a water temperature calculation module 120, and a water temperature control module 130.
The temperature acquisition module 110 is configured to acquire environmental temperature data collected for an area where the end device is located.
The environmental temperature of the area where the end device is located can be collected through the environmental temperature bulb arranged on the opened end device, and the collected environmental temperature data is obtained and used as a reference basis for controlling the temperature of the outlet water.
The water temperature calculation module 120 is configured to obtain an internal unit load rate of the water multi-connected unit according to the environment temperature data, and obtain a set outlet water temperature according to the internal unit load rate.
Specifically, after receiving the environmental temperature data of the room where the opened end device is located, the indoor unit load rate is calculated by combining the prestored parameters, and the set outlet water temperature is obtained according to the indoor unit load rate. In one embodiment, the water temperature calculation module 120 includes a temperature difference calculation unit, a load factor calculation unit, a load rate calculation unit, and a water temperature calculation unit.
And the temperature difference calculating unit is used for calculating to obtain the actual temperature difference according to the environment temperature data and the user set temperature.
And the load coefficient calculation unit is used for obtaining a temperature load coefficient according to the actual temperature difference and a preset temperature difference comparison reference.
And the load factor calculation unit is used for obtaining the load factor of the internal machine according to the temperature load factor, the preset host machine refrigerating capacity and the preset tail end device refrigerating capacity.
The water temperature calculating unit is used for obtaining the set water outlet temperature according to the load rate of the internal machine. Further, in an embodiment, the water temperature calculation unit obtains the corresponding set outlet water temperature according to the internal machine load rate and a preset load rate-outlet water temperature corresponding relation.
The water temperature control module 130 is used for controlling the outlet water temperature according to the set outlet water temperature. In one embodiment, the water temperature control module 130 includes a first stage control unit and a second stage control unit.
The first-stage control unit is used for controlling the temperature of the outlet water according to the set temperature of the outlet water until the average value of the difference value between the environmental temperature data of the area where the terminal device is located and the set temperature of the user reaches 0 ℃.
The second-stage control unit is used for adjusting the set water outlet temperature according to the temperature change rate of the area with the maximum difference value between the environment temperature data and the temperature set by the user until the maximum difference value between the environment temperature data and the temperature set by the user reaches 0 ℃.
In one embodiment, the second-stage control unit is used for adjusting the set outlet water temperature downwards when the temperature change rate of the area with the largest difference between the environmental temperature data and the set temperature of the user is greater than or equal to 0 ℃ per minute; and when the temperature change rate of the area with the maximum difference value between the environmental temperature data and the temperature set by the user is less than 0 ℃ per minute, the set outlet water temperature is adjusted upwards or maintained unchanged.
And the second-stage control unit acquires a corresponding change amplitude according to the temperature change rate and a preset down-regulation change range, and down-regulates the set outlet water temperature according to the acquired change amplitude. Furthermore, when the temperature change rate is in a preset maintaining change range, the second-stage control unit controls the set outlet water temperature to be maintained unchanged; when the temperature change rate is in a preset upper modulation range, the set outlet water temperature is controlled to be adjusted upwards, and the lower limit value of the change range is maintained to be larger than the upper limit value of the upper modulation range.
According to the water multi-connected unit operation control device, the internal unit load rate of the water multi-connected unit is calculated through the detected environment temperature data of the area where the end device is located, the water outlet temperature is determined and set according to the internal unit load rate to control the water outlet temperature, linkage control of the unit and the end device is achieved, water temperature control is conducted according to actual load, energy waste is reduced, and the reliability of unit control is improved while the problem that a host of a traditional water chilling unit and the end independent control bring asynchronization is solved.
The specific limitations of the water multi-connected unit operation control device can be referred to the limitations of the water multi-connected unit operation control method in the foregoing, and details are not described herein again. All or part of the modules in the water multi-connected unit operation control device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a water multi-connected air conditioning system is provided, and comprises a water multi-connected unit and a terminal device connected with the water multi-connected unit, wherein the water multi-connected unit performs outlet water temperature control through the method. Specifically, the water multi-connected unit comprises a host connected with a terminal device, the terminal device heats or refrigerates an area in which the terminal device is located by using cold (hot) water generated by the host, and the host receives environmental temperature data of the area in which the terminal device is located and controls the temperature of outlet water.
Fig. 5 is a schematic structural diagram of a water multi-connected air conditioning system, which is divided into a main unit and a terminal device from top to bottom, wherein the main unit is a split type structure, the left side is a main unit outdoor unit part, and the right side is a main unit indoor unit part. The main machine part mainly has the functions of a compressor, a heat exchanger, pipelines for connecting the components, components for detecting temperature and pressure, components for protecting a unit, components for realizing refrigerant flow direction conversion, a refrigerant throttling component, a waterway heat exchanger, a water pump, a waterway safety protection component and the like which are sequentially connected according to the sequence of the figure to generate cold (hot) water for supplying to a terminal device. The lower part is a terminal device, the main function is to heat or refrigerate the room of the user by using cold (hot) water generated by the host, and the components formed by the terminal device mainly comprise a Fan Coil (FCU), a water valve and an environment temperature sensing bag.
In order to better understand the operation control method of the water multi-connected unit and the water multi-connected air conditioning system, the following detailed explanation is given by taking an example of controlling the room temperature by the water multi-connected air conditioning system.
When the water multi-connected air conditioning system runs, the initial water outlet temperature t of the water multi-connected air conditioning system needs to be determined according to the actual room load, and the following parameters are defined:
α as the internal machine load rate;
initial water outlet temperature: t;
indoor room temperature load factor: xi；
Indoor temperature difference comparison standard: △ T (default 10 ℃, can be set);
actual indoor temperature difference of △ Tin(difference between current indoor ambient temperature and user-set temperature);
the refrigerating capacity of the main machine is as follows: w;
single end cooling capacity: wi；
Coefficient of quadratic function: a, b, c;
the initial water temperature t is calculated by utilizing the parameters, and the specific calculation steps are as follows:
calculation △ Tin(for example, if the current indoor ambient temperature is 35 ℃ C., and the user-set temperature is 27 ℃ C., △ TinAt 8 ℃);
calculating Xi(Xi＝△Tin/△T)；
Calculate α (α ═ Σ Wi*Xi/W)；
There are 2 methods for calculating t, (the first one uses a quadratic curve t ═ a α2+ b α + c, the second one using the first curve t ═ b α + c, the second curve adjustment is more energy efficient, the first curve adjustment is faster), fig. 6 shows the initial water temperature determination.
After the initial water temperature is calculated, the water multi-connected room temperature control is carried out in two stages, wherein the control parameters to be defined are shown in table 1.
TABLE 1
Entering a first stage of regulation, wherein the regulation target of the first stage is the average value of the difference value of the actual temperature of the started room and the temperature set by the user
After the first stage control is completed, about half of the started room temperature reaches the user set value, but the other half of the room temperature does not reach the user set value, and then the second stage adjustment is carried out, wherein the adjustment target is that the maximum value of the actual room temperature difference is △ TActual temperature Max of roomAdjusted to 0 c, thus completing the control of the overall room temperature.
The whole adjusting process of the water multi-connected air conditioning system is as follows:
the starting process comprises the following steps:
when the host detects that any FCU sends a starting signal, the host enters an initialization action stage: the electronic expansion valve is opened to the initial opening degree, the fan is started at the initial gear (middle gear 7), the compressor is started at 25HZ, and the adjustment process is started after the compressor runs for 3min (can be set).
The adjusting process comprises the following steps:
1. and (3) judging set water outlet temperature:
1.1 real-time calculating the load rate α of the internal machine after the initialization is finished, and then calculating the target set water outlet temperature T according to the following formulaSet water outletB α + c, calculating the update period of the target outlet water temperature as a, and the frequency of the compressor is △ TTemperature of water outletPerforming frequency rising and falling control, enabling other loads to act according to a normal control time sequence, and enabling the unit to operate according to a set water temperature until the unit is operated
Reaching 0 ℃, and entering the next step of judgment and regulation. After the outlet water temperature is set, the compressor starts to be adjusted normally, and the action time sequence of each load in the adjusting process is shown in fig. 7 and 8.
1.2 when
Maximum △ TTemperature of roomThe room temperature change rate phi.
When phi is more than or equal to 0 ℃/min, the T is reducedSet water outletThe judgment intervals are shown in Table 2.
| Phi change interval | TSet the water outlet variation amplitude |
| 0≤φ＜0.2 | -e |
| 0.2≤φ＜0.5 | -f |
| φ≥0.5 | -g |
TABLE 2
The values of the variation amplitude of the outlet water temperature down regulation corresponding to different down regulation variation ranges are not unique and can be adjusted according to actual conditions. As can be seen from table 2 and fig. 8, the variation range increases as the threshold value of the down-regulation variation range increases, i.e., e < f < g.
When phi is less than 0 ℃/min, the time is kept or increasedSet water outletThe judgment intervals are shown in Table 3.
| Phi change interval | TSet water outletAmplitude of variation |
| -0.2≤φ＜0 | Maintenance of |
| -0.5≤φ＜-0.2 | +h |
TABLE 3
And the value of h can be set and is determined according to the actual situation.
The standby process comprises the following steps:
if FCUs are in a starting state, when all FCU water valves are detected to be closed indoors, the external machine acts according to a temperature point stop time sequence, loads such as a compressor and a fan are sequentially closed, and the water pump maintains the running state.
Shutdown process:
when all the FCUs in the room are detected to be shut down, the external unit acts according to a shutdown time sequence, loads such as a compressor and a fan are sequentially shut down, and the water pump is stopped after being maintained for 120 s.
According to the water multi-connected air conditioning system, the internal unit load rate of the water multi-connected unit is calculated through the detected environment temperature data of the area where the end device is located, the water outlet temperature is determined according to the internal unit load rate to be set to control the water outlet temperature, linkage control of the unit and the end device is achieved, water temperature control is conducted according to actual load, energy waste is reduced, and the reliability of unit control is improved while the problem of asynchronism caused by the host and the end independent control of a traditional water chilling unit is solved.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: acquiring environmental temperature data acquired from an area where a terminal device is located; obtaining the load rate of the internal machines of the water multi-connected unit according to the environmental temperature data, and obtaining the set outlet water temperature according to the load rate of the internal machines; and controlling the temperature of the outlet water according to the set outlet water temperature.
In one embodiment, the computer program when executed by the processor further performs the steps of: calculating to obtain an actual temperature difference according to the environmental temperature data and the user set temperature; comparing the actual temperature difference with a preset temperature difference to obtain a temperature load coefficient; and obtaining the load rate of the internal machine according to the temperature load coefficient, the preset host machine refrigerating capacity and the preset tail end device refrigerating capacity.
In one embodiment, the computer program when executed by the processor further performs the steps of: and obtaining the corresponding set outlet water temperature according to the corresponding relation between the load rate of the internal machine and the preset load rate-outlet water temperature.
In one embodiment, the computer program when executed by the processor further performs the steps of: and controlling the water temperature of the outlet water according to the set outlet water temperature until the average value of the difference value between the environmental temperature data of the area where the terminal device is located and the set temperature of the user reaches 0 ℃. And adjusting the set outlet water temperature according to the temperature change rate of the area with the maximum difference between the environment temperature data and the user set temperature until the maximum difference between the environment temperature data and the user set temperature reaches 0 ℃.
In one embodiment, the computer program when executed by the processor further performs the steps of: and when the temperature change rate of the area with the maximum difference between the environmental temperature data and the temperature set by the user is greater than or equal to 0 ℃ per minute, the set outlet water temperature is reduced. And when the temperature change rate of the area with the maximum difference value between the environmental temperature data and the temperature set by the user is less than 0 ℃ per minute, the set outlet water temperature is adjusted upwards or maintained unchanged.
In one embodiment, the computer program when executed by the processor further performs the steps of: and acquiring a corresponding change amplitude according to the temperature change rate and a preset down-regulation change range, and performing down-regulation on the set outlet water temperature according to the acquired change amplitude.
In one embodiment, the computer program when executed by the processor further performs the steps of: when the temperature change rate is in a preset maintaining change range, controlling the set outlet water temperature to maintain unchanged; when the temperature change rate is in a preset upper modulation range, the set outlet water temperature is controlled to be adjusted upwards, and the lower limit value of the change range is maintained to be larger than the upper limit value of the upper modulation range.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The method for controlling the operation of the water multi-connected unit is characterized by comprising the following steps:
acquiring environmental temperature data acquired from an area where a terminal device is located;
obtaining the internal machine load rate of the water multi-connected unit according to the environment temperature data, and obtaining a set outlet water temperature according to the internal machine load rate;
controlling the water outlet temperature according to the set water outlet temperature;
the obtaining of the load factor of the internal units of the water multi-connected unit according to the environment temperature data comprises the following steps:
calculating to obtain an actual temperature difference according to the environment temperature data and the user set temperature;
comparing the actual temperature difference with a preset temperature difference to obtain a temperature load coefficient;
obtaining the load rate of the internal machines of the water multi-connected unit according to the temperature load coefficient, the preset host machine refrigerating capacity and the preset tail end device refrigerating capacity;
the control of the water temperature of the outlet water according to the set water temperature comprises the following steps:
adjusting the temperature of the outlet water according to the set outlet water temperature until the average value of the difference value between the environmental temperature data of the area where the terminal device is located and the set temperature of the user reaches 0 ℃;
adjusting the set outlet water temperature according to the temperature change rate of the area with the maximum difference between the environment temperature data and the user set temperature until the maximum difference between the environment temperature data and the user set temperature reaches 0 ℃, and specifically comprising the following steps: when the temperature change rate of the area with the largest difference between the environmental temperature data and the temperature set by the user is greater than or equal to 0 ℃ per minute, the set outlet water temperature is adjusted downwards; and when the temperature change rate of the area with the maximum difference value between the environmental temperature data and the temperature set by the user is less than 0 ℃ per minute, the set water outlet temperature is adjusted upwards or maintained unchanged.
2. The method according to claim 1, wherein obtaining the set outlet water temperature according to the internal machine load factor comprises:
and obtaining the corresponding set outlet water temperature according to the load rate of the internal machine and the corresponding relation between the preset load rate and the outlet water temperature.
3. The method of claim 1, wherein said adjusting said set outlet water temperature downward comprises:
and acquiring a corresponding change amplitude according to the temperature change rate and a preset down-regulation change range, and performing down-regulation on the set outlet water temperature according to the acquired change amplitude.
4. The method of claim 1, wherein the step of raising or maintaining the set outlet water temperature comprises:
when the temperature change rate is in a preset maintaining change range, controlling the set outlet water temperature to be maintained unchanged;
when the temperature change rate is in a preset upper modulation range, controlling the set outlet water temperature to perform upper modulation; the lower limit value of the maintaining variation range is larger than the upper limit value of the upper modulation range.
5. The utility model provides a water multi-connected unit operation controlling means which characterized in that includes:
the temperature acquisition module is used for acquiring environmental temperature data acquired from the area where the terminal device is located;
the water temperature calculation module is used for obtaining the internal unit load rate of the water multi-connected unit according to the environment temperature data and obtaining the set outlet water temperature according to the internal unit load rate;
the water temperature control module is used for controlling the water temperature of the outlet water according to the set outlet water temperature;
the water temperature calculation module includes:
the temperature difference calculation unit is used for calculating to obtain an actual temperature difference according to the environment temperature data and the user set temperature;
the load coefficient calculation unit is used for comparing a reference according to the actual temperature difference and a preset temperature difference to obtain a temperature load coefficient;
the load factor calculation unit is used for obtaining the load factor of the internal machine according to the temperature load factor, the preset host machine refrigerating capacity and the preset tail end device refrigerating capacity;
the water temperature calculating unit is used for obtaining set water outlet temperature according to the load rate of the internal machine;
the water temperature control module includes:
the first-stage control unit is used for adjusting the temperature of the outlet water according to the set outlet water temperature until the average value of the difference value between the environmental temperature data of the area where the tail end device is located and the set temperature of a user reaches 0 ℃;
the second-stage control unit is used for adjusting the set outlet water temperature according to the temperature change rate of the area with the maximum difference value between the environment temperature data and the set temperature of the user until the maximum difference value between the environment temperature data and the set temperature of the user reaches 0 ℃, and specifically comprises the following steps: when the temperature change rate of the area with the largest difference between the environmental temperature data and the temperature set by the user is greater than or equal to 0 ℃ per minute, the set outlet water temperature is adjusted downwards; and when the temperature change rate of the area with the maximum difference value between the environmental temperature data and the temperature set by the user is less than 0 ℃ per minute, the set water outlet temperature is adjusted upwards or maintained unchanged.
6. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
7. A water multi-connected air conditioning system is characterized by comprising a water multi-connected unit and a terminal device connected with the water multi-connected unit, wherein the water multi-connected unit controls the temperature of outlet water by the method as claimed in any one of claims 1 to 4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113464.8A CN109237713B (en) | 2018-09-25 | 2018-09-25 | Water multi-connected unit operation control method and device, medium and water multi-connected air conditioning system |
| PCT/CN2018/120632 WO2020062598A1 (en) | 2018-09-25 | 2018-12-12 | Operation control method and apparatus for water multi-split unit, and medium and water multi-split air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113464.8A CN109237713B (en) | 2018-09-25 | 2018-09-25 | Water multi-connected unit operation control method and device, medium and water multi-connected air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109237713A CN109237713A (en) | 2019-01-18 |
| CN109237713B true CN109237713B (en) | 2020-06-09 |
Family
ID=65056096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811113464.8A Active CN109237713B (en) | 2018-09-25 | 2018-09-25 | Water multi-connected unit operation control method and device, medium and water multi-connected air conditioning system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109237713B (en) |
| WO (1) | WO2020062598A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945431B (en) * | 2019-03-20 | 2020-11-24 | 珠海格力电器股份有限公司 | Temperature adjusting method, device and system and air conditioner |
| CN110160126B (en) * | 2019-04-18 | 2021-02-09 | 广东智科电子股份有限公司 | Variable-frequency heating multi-split control method, device, equipment and storage medium |
| CN110274357B (en) * | 2019-06-18 | 2020-08-14 | 珠海格力电器股份有限公司 | Water multi-connected air conditioning system, control method and device thereof and storage medium |
| CN110762787B (en) * | 2019-10-12 | 2020-12-08 | 青岛海信日立空调***有限公司 | Defrosting control method of multi-split central air conditioning system |
| CN110895013B (en) * | 2019-11-11 | 2020-11-24 | 珠海格力电器股份有限公司 | Control method and device of water multi-connected system, storage medium and water multi-connected system |
| CN110793149B (en) * | 2019-11-18 | 2020-10-27 | 珠海格力电器股份有限公司 | Air conditioning system and refrigerant quantity and water flow regulating method thereof |
| CN111059701B (en) * | 2019-11-25 | 2020-11-06 | 珠海格力电器股份有限公司 | Energy-saving control method and device, storage medium and water multi-connected system |
| CN111207481A (en) * | 2020-01-14 | 2020-05-29 | 珠海格力电器股份有限公司 | Water multi-connected system compressor frequency-up-down control method, storage medium and air conditioner |
| CN111238037A (en) * | 2020-02-20 | 2020-06-05 | 青岛海信日立空调***有限公司 | Hot water unit |
| CN112484248B (en) * | 2020-11-02 | 2022-04-08 | 珠海格力电器股份有限公司 | Air conditioner device control method and device and air conditioner |
| CN112665128B (en) * | 2020-12-17 | 2022-02-01 | 珠海格力电器股份有限公司 | Air conditioner refrigerator control method and device and air conditioner refrigerator |
| CN113266925B (en) * | 2021-05-28 | 2022-06-28 | 广东纽恩泰新能源科技发展有限公司 | Control method and water temperature control device of two-combined heat pump system |
| CN114110933B (en) * | 2021-10-29 | 2023-08-01 | 珠海格力电器股份有限公司 | Control method of air source heat pump unit system and air source heat pump unit system |
| CN115493270A (en) * | 2022-10-14 | 2022-12-20 | 珠海格力电器股份有限公司 | Control method and device for water multi-connected air conditioning unit, air conditioner and storage medium |
| CN115654644A (en) * | 2022-10-17 | 2023-01-31 | 珠海格力电器股份有限公司 | Control method and control device of air conditioning unit and air conditioning unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927657A (en) * | 2012-11-28 | 2013-02-13 | 机械工业第三设计研究院 | Water temperature change control method by air-conditioner temperature change speed method |
| CN105650808A (en) * | 2015-12-29 | 2016-06-08 | 深圳市奥宇节能技术股份有限公司 | Adjusting and controlling method and device for outlet water temperature of chilled water of water chilling unit |
| CN106765956A (en) * | 2016-12-23 | 2017-05-31 | 新智能源***控制有限责任公司 | Water supply variable temperature control system based on air-conditioning load rate |
| CN107842974A (en) * | 2017-10-25 | 2018-03-27 | 珠海格力电器股份有限公司 | A kind of system and method for regulation and control air-conditioning equipment running status |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4842654B2 (en) * | 2006-02-10 | 2011-12-21 | 株式会社石本建築事務所 | Control method for air conditioning system for radiant panel |
| CN102062495A (en) * | 2010-09-09 | 2011-05-18 | 宁波奥克斯电气有限公司 | Direct current variable frequency multifunctional air conditioning system and control method thereof |
| CN103245031B (en) * | 2012-02-06 | 2015-11-11 | 珠海格力电器股份有限公司 | Air-conditioner and control method thereof and device |
| CN103307710B (en) * | 2013-06-07 | 2016-02-03 | 昆山市远视商用空调工程有限公司 | Starting of air conditioner method |
| CN103292391B (en) * | 2013-06-07 | 2017-02-08 | 昆山市远视商用空调工程有限公司 | Air-conditioner energy storage device |
| JP6681896B2 (en) * | 2015-07-14 | 2020-04-15 | 三菱電機株式会社 | Refrigeration system |
| 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 |
| CN106766222B (en) * | 2016-12-26 | 2019-08-16 | 珠海格力电器股份有限公司 | The supply water temperature adjusting method and device of heat pump water-heating machine |
| CN107091509B (en) * | 2017-04-06 | 2020-10-20 | 青岛海尔空调电子有限公司 | Magnetic suspension water cooling unit |
| CN107120799B (en) * | 2017-05-23 | 2020-07-07 | 青岛海尔空调电子有限公司 | Multi-split control method and system for water system |
| CN107560099A (en) * | 2017-07-10 | 2018-01-09 | 珠海格力电器股份有限公司 | The control method and device of residential central air- unit |
-
2018
- 2018-09-25 CN CN201811113464.8A patent/CN109237713B/en active Active
- 2018-12-12 WO PCT/CN2018/120632 patent/WO2020062598A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927657A (en) * | 2012-11-28 | 2013-02-13 | 机械工业第三设计研究院 | Water temperature change control method by air-conditioner temperature change speed method |
| CN105650808A (en) * | 2015-12-29 | 2016-06-08 | 深圳市奥宇节能技术股份有限公司 | Adjusting and controlling method and device for outlet water temperature of chilled water of water chilling unit |
| CN106765956A (en) * | 2016-12-23 | 2017-05-31 | 新智能源***控制有限责任公司 | Water supply variable temperature control system based on air-conditioning load rate |
| CN107842974A (en) * | 2017-10-25 | 2018-03-27 | 珠海格力电器股份有限公司 | A kind of system and method for regulation and control air-conditioning equipment running status |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109237713A (en) | 2019-01-18 |
| WO2020062598A1 (en) | 2020-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109237713B (en) | Water multi-connected unit operation control method and device, medium and water multi-connected air conditioning system | |
| CN110513819B (en) | Air conditioner control method, air conditioner and storage medium | |
| CN111023434B (en) | Operation control method and system of air conditioner, air conditioner and storage medium | |
| CN107062580B (en) | Control method for reducing noise of indoor unit of air conditioner and multi-split air conditioner | |
| CN107178873A (en) | Transducer air conditioning and its control method | |
| CN108870573B (en) | Refrigeration unit dehumidification control method and device, refrigeration unit main board and storage medium | |
| CN107763792B (en) | Control method of multi-connected air conditioning unit | |
| CN110567127A (en) | air conditioner frequency control method and air conditioner | |
| CN113531801B (en) | Control method and device of multi-connected air conditioner and readable storage medium | |
| JP2014029222A (en) | Air conditioner | |
| CN109539380B (en) | Method for controlling frequency of compressor of heat pump water heater | |
| CN108518821B (en) | Control method and device of air conditioner | |
| CN109282516B (en) | Air-cooled screw unit and control method thereof | |
| WO2019034124A1 (en) | Method for controlling automatic temperature-adjustment air conditioner and air conditioner | |
| CN111765609A (en) | Multi-split air conditioner control method, multi-split air conditioner and storage medium | |
| CN108800466B (en) | Control method and device of air conditioner | |
| CN108224846B (en) | Control method and system of double-valve heat pump system | |
| CN113587335A (en) | Control method and device for improving long-time temperature-reaching shutdown of air conditioner and air conditioner | |
| CN113432236A (en) | Method of controlling air conditioner, and computer-readable storage medium | |
| CN115200163B (en) | Air conditioner control method and device and air conditioner | |
| CN107576030B (en) | Control method of air conditioner and air conditioner | |
| CN114111201B (en) | Refrigerator refrigeration control method, device, control equipment and storage medium | |
| CN114216255B (en) | Control method and device for air conditioner pressure relief and air conditioner | |
| CN113566375B (en) | Air conditioner control method and control device and air conditioner | |
| CN111854203B (en) | Refrigerator equipment, refrigerating system and control method of refrigerating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |