WO2020062598A1

WO2020062598A1 - Operation control method and apparatus for water multi-split unit, and medium and water multi-split air-conditioning system

Info

Publication number: WO2020062598A1
Application number: PCT/CN2018/120632
Authority: WO
Inventors: 袁占彪; 谷月明; 孟红武
Original assignee: 珠海格力电器股份有限公司
Priority date: 2018-09-25
Filing date: 2018-12-12
Publication date: 2020-04-02
Also published as: CN109237713B; CN109237713A

Abstract

Disclosed are an operation control method and apparatus for a water multi-split unit, and a medium and a water multi-split air-conditioning system. The method comprises: acquiring environmental temperature data collected in an area where a tail-end apparatus is located; obtaining an inner unit load rate of a water multi-split unit according to the environmental temperature data, and obtaining a set outlet water temperature according to the inner unit load rate; and controlling the water temperature of outlet water according to the set outlet water temperature. An inner unit load rate of a water multi-split unit is calculated by means of detected environmental temperature data of an area where a tail-end apparatus is located, and a set outlet water temperature is determined according to the inner unit load rate to control the water temperature of outlet water, thereby realizing linkage control of a unit and the tail-end apparatus; and a water temperature is controlled according to an actual load, thereby reducing energy waste. The reliability of unit control is further improved while the problem of asynchronism caused by independent control of a host of a traditional water chilling unit and a tail end is solved.

Description

Water multiple online group operation control method, device, medium and water multiple air conditioning system

Related applications

This application claims the priority of a Chinese patent application filed on September 25, 2018, with application number 201811113464.8, entitled "Water multi-line group operation control method, device, medium, and water multi-air-conditioning system". The entire text is incorporated by reference.

Technical field

The present application relates to the technical field of unit control, and in particular, to a method, device, medium and water multi-air-conditioning system for water multi-line group operation control.

Background technique

With the development of science and the continuous progress of society, the application of chillers in people's daily work and life is becoming more and more widespread. Chillers can generally be divided into water-cooled and air-cooled according to the refrigeration form. In the air-conditioning system, water-cooled chiller is used to output chilled water to cool the room.

The chiller in the related technology includes a host and a heat dissipation terminal disposed indoor. The host sends chilled water to the heat dissipation terminal in the room according to the control of the crew, and the heat dissipation terminal performs cooling processing according to the user's adjustment instruction. Because the main engine and the cooling end are controlled independently, it is easy to cause energy waste, and the traditional water unit has the disadvantage of low control reliability.

Summary of the Invention

Based on this, a water multiple online group operation control method, device, medium and water multiple air conditioning system that can improve the control reliability of the unit can be provided, which can realize the linkage control of the unit and the terminal device, and perform water temperature control according to the actual load, reducing Waste of energy improves the control reliability of the unit.

A method for controlling the operation of a water multi-line group, the method includes:

Acquire the ambient temperature data collected in the area where the end device is located;

Obtaining the internal machine load rate of the water multi-connection group according to the environmental temperature data, and obtaining the set water temperature according to the internal machine load rate;

The outlet water temperature control is performed according to the set outlet water temperature.

A water multi-line group operation control device includes:

A temperature acquisition module configured to acquire ambient temperature data collected from an area where the end device is located;

The water temperature calculation module is configured to obtain the internal machine load rate of the water multi-connection group according to the ambient temperature data, and obtain the set water temperature according to the internal machine load rate;

The water temperature control module is configured to perform outlet water temperature control according to the set outlet water temperature.

A computer-readable storage medium stores a computer program thereon, and when the computer program is executed by a processor, the following steps are implemented:

A water multiple air-conditioning system includes a water multiple connection group and an end device connected to the water multiple connection group, and the water multiple connection group performs outlet water temperature control through the above method.

The above-mentioned water multi-line group operation control method, device, medium and water multi-line air-conditioning system calculate the internal machine load rate of the water multi-line group through the detected ambient temperature data of the area where the terminal device is located, and determine the internal machine load rate based on the internal machine load rate Set the outlet water temperature to control the outlet water temperature, realize the linkage control of the unit and the terminal device, and control the water temperature according to the actual load, reduce energy waste, and solve the asynchronous problem caused by the independent control of the host and terminal of the traditional chiller while It also improves the unit control reliability.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present application or the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely It is an embodiment of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the disclosed drawings without paying creative labor.

FIG. 1 is a flowchart of a method for controlling a multi-line group operation in some embodiments; FIG.

FIG. 2 is a flowchart of obtaining an internal machine load rate of a water connection group according to environmental temperature data in some embodiments; FIG.

FIG. 3 is a flow chart of effluent water temperature control according to a set effluent temperature in some embodiments; FIG.

FIG. 4 is a flowchart of a water multi-line group operation control device in some embodiments; FIG.

5 is a schematic structural diagram of a water multiple air conditioning system in some embodiments;

6 is a schematic diagram of determining an initial water temperature of a water multi-air-conditioning system in some embodiments;

FIG. 7 is a timing chart of room temperature adjustment and load operation in the first stage of the water multiple air conditioning system in some embodiments; FIG.

FIG. 8 is a timing chart of room temperature adjustment and load operation in the second stage of the water multiple air conditioning system in some embodiments.

detailed description

In order to make the purpose, technical solution, and advantages of the present application clearer, 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 only used to explain the application, and are not used to limit the application.

In one embodiment, a method for controlling the operation of a water-online group is provided. As shown in FIG. 1, the method includes:

Step S110: Acquire ambient temperature data collected from the area where the end device is located.

Specifically, the host can be connected to the end device through the host of the water connection group. The area where the end device is located can be a closed area such as a room or a processing workshop. The end device uses the cold (hot) water generated by the host to heat or cool the area. . The ambient temperature package installed on the end device can be used to collect the ambient temperature in the area where the end device is located, and the collected ambient temperature data can be transmitted to the host for the host to use as a reference for the temperature control of the outlet water. In order to facilitate understanding, the following description is based on an example where an end device is installed in a room.

Step S120: Obtain the internal machine load rate of the water-on-line group according to the ambient temperature data, and obtain the set water temperature according to the internal machine load rate.

Specifically, the host receives the ambient temperature data of the room where the opened end device is located (hereinafter referred to as the startup room), calculates the load rate of the internal unit in combination with the parameters saved in advance, and obtains the set water temperature according to the internal unit load rate. In an embodiment, as shown in FIG. 2, in step S120, the internal machine load factor of the water-on-line group is obtained according to the ambient temperature data, including steps S122 to S126.

S122: Calculate the actual temperature difference according to the ambient temperature data and the user-set temperature. Specifically, the host calculates the difference between the indoor ambient temperature of the current boot room and the user-set temperature to obtain the actual temperature difference ΔT _{in in} the boot room. Wherein, the temperature set by the user for the area may be obtained through the end device, the host receives the temperature set by the user and calculates the temperature difference, or may calculate the temperature difference based on the user-set temperature stored in advance.

S124: Obtain a temperature load coefficient according to the actual temperature difference and a preset temperature difference comparison reference. Specifically, after calculating the actual temperature difference ΔT _{in in the} boot room, the host calculates a ratio between the actual temperature difference ΔT _in and a preset indoor temperature difference comparison reference ΔT as the temperature load coefficient X _{i in} each room, that is, X _i = ΔT _in / ΔT. The specific value of the temperature difference comparison reference ΔT is not unique and can be adjusted according to the actual situation.

S126: Obtain the internal machine load rate according to the temperature load coefficient and the preset cooling capacity of the main engine and the cooling capacity of the terminal device. Specifically, a host previously stored host refrigerant amount W and a single terminal apparatus cooling capacity W _i, and in conjunction with the boot room temperature corresponding to the load factor X _i, end-device refrigerant amount W _i and a host refrigerant amount W is calculated to obtain the machine load factor α. The host computer includes an external device installed outdoors and an internal device installed indoors. The external device is connected to the internal device, and the internal device is connected to a terminal device in each room. The specific calculation method of the internal machine load factor α is not unique. In this embodiment, the calculation formula of the internal machine load factor α is α = ΣW _i * X _i / W.

Further, after the host computer obtains the internal machine load factor α in combination with the temperature load coefficient X _i corresponding to each boot room, the method of calculating the set water temperature according to the internal machine load factor α is also not unique. In one embodiment, the steps In S120, the set outlet water temperature is obtained according to the load rate of the internal unit, which includes: obtaining the corresponding set outlet water temperature according to the internal unit load rate and a preset load rate-outlet temperature correspondence relationship. By pre-establishing and saving the correspondence between the load rate of the internal machine and the outlet temperature, after the host computer calculates the load ratio of the internal machine, it directly obtains the set outlet water temperature based on the pre-stored correspondence for water temperature control.

It can be understood that the type of the correspondence relationship between the load rate and the water temperature is not unique, and it can be a quadratic curve equation. For example, the quadratic curve t = aα ² + bα + c is used to calculate and set the water temperature t, where a, b and c is a quadratic function coefficient. The corresponding relationship between the load rate and the outlet water temperature may also be a linear equation. For example, a first-order curve t = bα + c is used to calculate and set the outlet water temperature t, where b and c are coefficients of a linear function. The quadratic curve adjustment is more energy-efficient and the primary curve adjustment is faster. The required corresponding relationship can be selected according to the actual needs for the calculation of the set water temperature t.

Step S130: Perform outlet water temperature control according to the set outlet water temperature.

After the host computer calculates the set outlet water temperature t, it adjusts the water temperature of the outlet water delivered to the terminal device according to the set outlet water temperature t. It can be understood that after the host obtains the initial outlet temperature and performs water temperature control, it can also calculate the target outlet temperature based on the collected ambient temperature data in real time according to a preset update period a, and perform outlet water temperature control based on the calculated target outlet temperature.

Specifically, in one embodiment, as shown in FIG. 3, step S130 includes steps S132 and S134.

Step S132: Control the outlet water temperature according to the set outlet water temperature until the average value of the difference between the ambient temperature data of the area where the end device is located and the user-set temperature reaches 0 degrees Celsius.

The host is in the first stage of the outlet water temperature control according to the set outlet water temperature, and the adjustment target is to make the average room temperature difference

When it reaches 0 ℃, the temperature of the room that has been turned on is controlled as a whole, and the average room temperature difference

It refers to the average actual boot room room _room temperature T _actual temperature T set by the user _{to set} a difference ΔT of _room. Specifically, the compressor, the host after the initial set water temperature, the actual water temperature T set and _{the actual} water temperature T _water _outlet water temperature _set value of the temperature difference ΔT the external _{water temperature} control unit performs a frequency down until the average room temperature difference

When it reaches 0 ℃, proceed to the next step to judge and adjust.

Step S134: Adjust the set water temperature according to the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature, until the maximum difference between the ambient temperature data and the user-set temperature reaches 0 degrees Celsius.

After the host's first-stage control is completed, the temperature of about half of the rooms that have been turned on reaches the user-set temperature, and the temperature of the other half of the rooms does not reach the user-set temperature. At this time, the host enters the second-stage adjustment. To: Adjust the maximum temperature difference ΔT of the _{actual room to the actual temperature Max of the room} to 0 ° C, and complete the control of all room temperatures. The maximum value of the actual room temperature difference ΔT The _{actual temperature of the room Max} refers to the maximum value of the difference between the ambient temperature data and the temperature set by the user in the switched-on room. Host temperature change rate according to the actual room temperature difference maximum ΔT _{room actual temperature Max}

Adjust the set outlet water temperature so that the maximum difference between the ambient temperature data and the user set temperature reaches 0 degrees Celsius.

In this embodiment, the temperature of the effluent water is controlled in two stages according to the determined set effluent temperature, and the temperature control of all the booting rooms is gradually realized, and the control is stable and reliable.

Further, in one embodiment, the step S134 adjusts the set outlet water temperature according to the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature, including steps 1 and 2.

Step 1: When the temperature change rate of the area with the largest difference between the ambient temperature data and the temperature set by the user is greater than or equal to 0 degrees Celsius per minute, the set water temperature is adjusted downward.

Make the average room temperature difference through the first stage adjustment

After determining the maximum temperature difference ΔT the actual room temperature is _{_{the actual}} rate of change of _{the room} _temperature of the room _Max

If the temperature change rate

Adjust the set outlet water temperature down. In this embodiment, the step of lowering the set water temperature in step 1 includes: obtaining a corresponding change range according to the temperature change rate and a preset down change range, and adjusting the set water temperature according to the obtained change range. Specifically, the host can set different change ranges in advance corresponding to different down-change ranges, and according to the temperature change rate

The change range in which it is located extracts the corresponding change range and adjusts the set water temperature down.

Step 2: When the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature is less than 0 degrees Celsius per minute, increase or maintain the set water temperature.

If the temperature change rate

Rate of change

The actual value of is to increase the set water temperature or keep the set water temperature unchanged. In this embodiment, the setting water temperature is adjusted upward or maintained in step 2, including: controlling the set water temperature to remain unchanged when the temperature change rate is in a preset maintenance change range. When the temperature change rate is within a preset upward change range, the control sets the water temperature to be adjusted to maintain the lower limit value of the change range greater than the upper limit value of the upward change range. According to temperature change rate

The range of change is corresponding to the water temperature increase or the same.

The above water multi-line group operation control method calculates the internal load rate of the water multi-line group based on the ambient temperature data of the area where the terminal device is located, and determines the set outlet water temperature for the outlet water temperature control based on the internal machine load rate. The unit and the terminal device are linked and controlled, and the water temperature is controlled according to the actual load, which reduces energy waste. While solving the asynchronous problem caused by the independent control of the main unit and the terminal of the traditional chiller, it also improves the unit control reliability.

In one embodiment, a water multi-line group operation control device is provided. As shown in FIG. 4, it 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 from an area where the end device is located.

The ambient temperature in the area where the end device is located can be collected through the opened ambient temperature sensing package installed on the end device, and the collected ambient temperature data can be used as a reference basis for the outlet temperature control.

The water temperature calculation module 120 is configured to obtain the internal machine load rate of the water multi-connection group according to the ambient temperature data, and obtain the set water temperature according to the internal machine load rate.

Specifically, after receiving the ambient temperature data of the room where the turned-on end device is located, the internal machine load rate is calculated in combination with the parameters saved in advance, and the set water temperature is obtained according to the internal machine load rate. In one embodiment, the water temperature calculation module 120 includes a temperature difference calculation unit, a load coefficient calculation unit, a load rate calculation unit, and a water temperature calculation unit.

The temperature difference calculation unit is used to calculate the actual temperature difference according to the ambient temperature data and the temperature set by the user.

The load coefficient calculation unit is configured to obtain a temperature load coefficient according to an actual temperature difference and a preset temperature difference comparison reference.

The load rate calculation unit is used to obtain the internal machine load rate according to the temperature load coefficient and the preset cooling capacity of the main engine and the cooling capacity of the terminal device.

The water temperature calculation unit is used to obtain the set water temperature according to the load rate of the internal machine. Further, in one embodiment, the water temperature calculation unit obtains a corresponding set outlet water temperature according to the internal machine load factor and a preset load factor-outlet water temperature correspondence.

The water temperature control module 130 is configured to perform outlet water temperature control 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.

In the first stage, the control unit is configured to control the outlet water temperature according to the set outlet water temperature, until the average value of the difference between the ambient temperature data of the area where the end device is located and the user-set temperature reaches 0 degrees Celsius.

In the second stage, the control unit is configured to adjust the set water temperature according to the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature until the maximum difference between the ambient temperature data and the user-set temperature reaches 0 degrees Celsius.

In one embodiment, the second-stage control unit is configured to reduce the set water temperature when the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature is greater than or equal to 0 degrees Celsius per minute. When the temperature change rate of the area with the largest difference between the ambient temperature data and the temperature set by the user is less than 0 degrees Celsius per minute, the set water temperature is adjusted upward or maintained unchanged.

The second-stage control unit obtains a corresponding change range according to the temperature change rate and a preset down-change range, and adjusts the set outlet water temperature according to the obtained change range. Further, when the temperature change rate is in a preset maintenance change range, the second-stage control unit controls the set water temperature to remain unchanged. When the temperature change rate is within a preset upward change range, the control sets the water temperature to be adjusted to maintain the lower limit value of the change range greater than the upper limit value of the upward change range.

The above water multi-line group operation control device calculates the internal load rate of the water multi-line group based on the detected ambient temperature data of the area where the end device is located, and determines the set outlet water temperature for the outlet water temperature control based on the internal machine load rate. The unit and the terminal device are linked and controlled, and the water temperature is controlled according to the actual load, which reduces energy waste. While solving the asynchronous problem caused by the independent control of the main unit and the terminal of the traditional chiller, it also improves the unit control reliability.

For the specific limitation of the operation control device of the water multi-line group, refer to the limitation on the operation control method of the water multi-line group above, which is not repeated here. Each module in the above-mentioned water multi-line group operation control device can be realized in whole or in part by software, hardware, and a combination thereof. The above-mentioned modules may be embedded in the hardware form or independent of the processor in the computer device, or may be stored in the memory of the computer device in the form of software, so that the processor calls and performs the operations corresponding to the above modules.

In one embodiment, a water multiple air-conditioning system is provided, which includes a water multiple connection group and an end device connected to the water multiple connection group. The water multiple connection group performs outlet water temperature control through the above method. Specifically, the water multi-connection group includes a host connected to an end device. The end device uses cold (hot) water generated by the host to heat or cool the area, and receives the ambient temperature data of the area where the end device is located through the host and performs water temperature control .

Figure 5 shows the structural schematic diagram of the water multi-air-conditioning system. The figure is divided into two parts, the host and the end device from above and below. The host is the upper part. The host uses a split structure. The left is the outdoor unit of the host. The side is the indoor unit of the host. The function of the main part is mainly composed of the compressor and the heat exchanger and the pipes connecting each component, the components that detect the temperature and pressure, the components of the protection unit, the components that realize the conversion of the refrigerant flow, and the refrigerant throttling components. Water circuit heat exchangers, water pumps, water channel safety protection components, etc. are connected in order according to the order shown in the figure to produce cold (hot) water and supply it to the end device. The lower part is an end device. The main function is to use the cold (hot) water generated by the host to heat or cool the user's room. The components are mainly fan coil units (FCU), water valves, and environmental temperature packages.

In order to facilitate a better understanding of the above-mentioned water multi-line group operation control method and the water multi-line air conditioning system, a detailed explanation will be given below by taking the water multi-line air conditioning system to control the room temperature as an example.

When the water multi-air-conditioning system is operating, its initial water outlet temperature t needs to be determined according to the actual room load, and the following parameters are defined:

Internal load factor: α;

Initial water temperature: t;

Indoor room temperature load factor: X _i ;

Indoor temperature difference comparison benchmark: ΔT (default 10 ℃, can be set);

Actual indoor temperature difference: ΔT _in (the difference between the current indoor ambient temperature and the user-set temperature);

Host cooling capacity: W;

Single end cooling capacity: Wi _;

Quadratic function coefficients: a, b, c;

Use the above parameters to calculate the initial water temperature t. The specific calculation steps are as follows:

Calculate ΔT _in (for example, if the current indoor ambient temperature is 35 ° C and the temperature set by the user is 27 ° C, then ΔT _in is 8 ° C);

Calculate X _i (X _i = ΔT _in / ΔT);

Calculate α (α = ΣW _i * X _i / W);

There are two methods for calculating t: (the first one uses a quadratic curve t = aα ² + bα + c, and the second one uses a primary curve t = bα + c. The quadratic curve adjustment is more energy efficient and the first curve adjustment is faster.) Figure 6 shows a schematic diagram for determining the initial water temperature.

After the initial water temperature is calculated, the temperature control of the water multi-chamber room is performed in two stages: the control parameters that need to be defined are shown in Table 1.

Table 1

Enter the first stage of adjustment: The goal of the first stage of adjustment is to make the average value of the difference between the actual temperature of the room that has been turned on and the temperature set by the user

It reaches 0 ° C, so that the temperature of the room that has been turned on can be controlled as a whole. After the first stage of control is completed, about half of the temperature of the turned-on room reaches the user-set value, but the other half of the room temperature does not reach the user-set value. At this time, enter the second stage of adjustment: the goal of the adjustment is to adjust the maximum temperature difference ΔT of the _{actual room to the actual temperature Max of the room} to 0 ° C, so that the control of all room temperatures is completed.

The entire adjustment process of the water multi-air conditioning system is as follows:

Boot process:

When the host detects that any FCU sends a start signal, the host enters the initial action stage: the electronic expansion valve is at the initial opening, the fan is started in the initial gear (mid-range 7 gear), the compressor is started at 25 Hz, and it runs for 3 minutes (can be set) ) To enter the adjustment process.

Adjustment process:

1. Set the outlet water temperature to judge:

1.1 After the initialization is completed, calculate the internal machine load factor α in real time, and then calculate the target set water temperature according to the following formula, T _set _water = bα + c. The target water temperature calculation update cycle is a; the compressor frequency is controlled according to the ΔT _{water temperature} , and the other loads operate according to the normal control sequence. The unit runs at the set water temperature until

When it reaches 0 ℃, proceed to the next step to judge and adjust. After the outlet water temperature is set, the compressor starts to adjust normally, and the load timing of each load during the adjustment process is shown in Figure 7 and Figure 8.

1.2 When

Room temperature change rate to determine the maximum ΔT _{room temperature}

when

At this time, lower T to _{set effluent} , and the judgment interval is shown in Table 2.

Table 2

Among them, the variation range of the outlet water temperature downward adjustment corresponding to different downward adjustment ranges is not unique, and can be adjusted according to the actual situation. It can be known from Table 2 and FIG. 8 that the change range increases with the increase of the lower limit value of the change range, that is, e <f <g.

when

At this time, the _{water is} maintained or raised to _set T, and the judgment interval is shown in Table 3.

table 3

The value of h can be set and determined according to the actual situation.

Standby process:

If the FCU is in the on state, when all indoor FCU water valves are detected to be closed, the external unit will operate in accordance with the shutdown sequence at the temperature point, the compressor, fan and other loads will be turned off in order, and the pump will maintain the running state.

Shutdown process:

When all the FCUs in the room are detected to be shut down, the external unit operates according to the shutdown sequence, the compressor, fan and other loads are turned off in turn, and the pump is stopped for 120s.

The above-mentioned water multiple air conditioner system calculates the internal load rate of the water multi-connection group based on the detected ambient temperature data of the area where the terminal device is located, and determines the set outlet water temperature for the outlet water temperature control based on the internal device load rate to realize the unit and The linkage control of the end device and the water temperature control according to the actual load reduce energy waste. While solving the asynchronous problem caused by the independent control of the main unit and the end of the traditional chiller, it also improves the unit control reliability.

In one embodiment, a computer-readable storage medium is provided on which a computer program is stored. When the computer program is executed by a processor, the following steps are performed: acquiring environmental temperature data collected from an area where an end device is located; and according to the environmental temperature. The data obtains the internal machine load rate of the water multi-line group, and obtains the set outlet temperature according to the internal machine load rate; and performs outlet water temperature control according to the set outlet temperature.

In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: the actual temperature difference is calculated according to the ambient temperature data and the user-set temperature; the temperature load coefficient is obtained according to the actual temperature difference and a preset temperature difference comparison reference; and the temperature load is obtained The coefficient and the preset cooling capacity of the main engine and the cooling capacity of the terminal device obtain the internal machine load factor.

In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: obtaining a corresponding set outlet water temperature according to the internal machine load ratio and a preset load ratio-outlet water temperature correspondence relationship.

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: controlling the outlet water temperature according to the set outlet water temperature until the average value of the difference between the ambient temperature data of the area where the end device is located and the user-set temperature reaches 0 degrees Celsius . Adjust the set water temperature according to the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature, until the maximum difference between the ambient temperature data and the user-set temperature reaches 0 degrees Celsius.

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: when the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature is greater than or equal to 0 degrees Celsius per minute, the water temperature is set Down. When the temperature change rate of the area with the largest difference between the ambient temperature data and the temperature set by the user is less than 0 degrees Celsius per minute, the set water temperature is adjusted upward or maintained unchanged.

In an embodiment, when the computer program is executed by the processor, the following steps are further implemented: obtaining a corresponding change amplitude according to the temperature change rate and a preset down-regulation change range, and adjusting the set outlet water temperature according to the obtained change amplitude.

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: when the temperature change rate is in a preset maintenance change range, controlling the set water temperature to remain unchanged; when the temperature change rate is in a preset upward change In the range, the control sets the water temperature to be adjusted to maintain the lower limit value of the change range greater than the upper limit value of the increase change range.

A person of ordinary skill in the art can understand that all or part of the processes in the methods of the foregoing embodiments can be implemented by using a computer program to instruct related hardware. The computer program may be stored in a non-volatile computer-readable storage medium. When the computer program is executed, the computer program may include the processes of the embodiments of the methods described above. Wherein, any reference to the memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may 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 various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Synchlink DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

The technical features of the embodiments described above can be arbitrarily combined. In order to simplify the description, all possible combinations of the technical features in the above embodiments have not been described. However, as long as there is no contradiction in the combination of these technical features, It should be considered as the scope described in this specification.

The above-mentioned embodiments only express several implementation manners of the present application, and their descriptions are more specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be noted that, for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of this application patent shall be subject to the appended claims.

Claims

A method for controlling the operation of a water line group is characterized in that the method includes:

Acquire the ambient temperature data collected in the area where the end device is located;

Obtaining the internal machine load rate of the water multi-connection group according to the environmental temperature data, and obtaining the set water temperature according to the internal machine load rate;

The outlet water temperature control is performed according to the set outlet water temperature.
The method according to claim 1, wherein the obtaining the internal machine load rate of the Shui Duo online group according to the ambient temperature data comprises:

Calculate the actual temperature difference according to the ambient temperature data and the user-set temperature;

Obtaining a temperature load coefficient according to the actual temperature difference and a preset temperature difference comparison reference;

According to the temperature load coefficient and the preset cooling capacity of the main engine and the cooling capacity of the terminal device, the internal machine load rate of the water multi-connection group is obtained.
The method according to claim 1, wherein the obtaining the set outlet water temperature according to the internal machine load rate comprises:

A corresponding set outlet water temperature is obtained according to the internal machine load factor and a preset load factor-outlet water temperature correspondence relationship.
The method according to claim 1, wherein the performing water temperature control according to the set water temperature comprises:

Adjusting the outlet water temperature according to the set outlet water temperature until the average value of the difference between the ambient temperature data of the area where the end device is located and the user-set temperature reaches 0 degrees Celsius;

Adjust the set water temperature according to the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature, until the maximum difference between the ambient temperature data and the user-set temperature reaches 0 degrees Celsius.
The method according to claim 4, wherein the adjusting the set outlet water temperature according to a temperature change rate of an area where the difference between the ambient temperature data and the user-set temperature is the largest, comprises:

When the temperature change rate of the area with the largest temperature difference between the ambient temperature data and the user's set temperature is greater than or equal to 0 degrees Celsius per minute, lowering the set water temperature;

When the temperature change rate of the area with the largest difference between the ambient temperature data and the user-set temperature is less than 0 degrees Celsius per minute, the set water temperature is adjusted upward or maintained unchanged.
The method according to claim 5, wherein the step of lowering the temperature of the set outlet water comprises:

A corresponding change amplitude is obtained according to the temperature change rate and a preset down-regulation change range, and the set outlet water temperature is adjusted down according to the obtained change amplitude.
The method according to claim 5, wherein the step of adjusting or maintaining the set outlet water temperature comprises:

Controlling the set water temperature to remain unchanged when the temperature change rate is in a preset maintenance change range;

When the temperature change rate is in a preset upward adjustment change range, controlling the set outlet water temperature to be adjusted; the lower limit value of the maintenance change range is greater than the upper limit value of the upward adjustment change range.
A water multi-line group operation control device is characterized in that it includes:

A temperature acquisition module configured to acquire ambient temperature data collected from an area where the end device is located;

The water temperature calculation module is configured to obtain the internal machine load rate of the water multi-connection group according to the ambient temperature data, and obtain the set water temperature according to the internal machine load rate;

The water temperature control module is configured to perform outlet water temperature control according to the set outlet water temperature.
A computer-readable storage medium having stored thereon a computer program, characterized in that when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.
A water multiple air conditioner system, comprising a water multiple connection group and an end device connected to the water multiple connection group, and the water multiple connection group is performed by the method according to any one of claims 1-7. Outlet water temperature control.