CN112178860B - Operation control method of air-cooled cold and hot water unit and air conditioner - Google Patents

Abstract

The invention provides an operation control method of an air-cooled cold and hot water unit and an air conditioner. By acquiring an indoor temperature value, the initial number of the air-cooled cold and hot water units to be started is determined according to a preset target indoor temperature value and an indoor temperature value, And control the initial number of air-cooled cold and hot water units to start operation. The invention determines the initial number of air-cooled cold and hot water units that need to be started according to the actual value of the indoor temperature and the temperature that needs to be regulated by the user's selection, and then controls the initial number of air-cooled cold and hot water units to start and run, so as to take into account the load Start-up time-consuming and air-conditioning cooling and heating efficiency can reduce the delay time of indoor temperature cooling or heating, and improve the working efficiency of air-conditioning.

Description

Operation control method and air conditioner of an air-cooled cold and hot water unit

technical field

The invention relates to the technical field of air-conditioning control, in particular to an operation control method of an air-cooled cold and hot water unit and an air conditioner.

Background technique

In the cascade mode of the air-cooled chilled and hot water units, the load time of the inverter unit is long, so that the cooling/heating effect cannot be reflected in a short time. At present, the general control method is to control the number of load additions and reductions of the unit according to the temperature difference between the inlet water and the set water temperature, and the rate of water temperature temperature drop. From the perspective of reliability, the air-cooled hot and cold water unit will stay at the platform point for a period of time during the start-up operation. After each air-cooled cold and hot water unit starts to run for 6-7 minutes, its operating frequency will meet the loading conditions. Therefore, if four air-cooled cold and hot water machines are cascaded, it will take 24-28 minutes for all loading and running, resulting in a slower rate of increase/decrease of the actual water temperature, which in turn leads to a delay in adjusting the indoor temperature to the target temperature. The operation control method of the air-cooled cold and hot water unit in the prior art cannot meet the demand for rapid adjustment of the indoor temperature.

Therefore, the prior art needs to be further improved.

SUMMARY OF THE INVENTION

In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide an operation control method and an air conditioner for an air-cooled cold and hot water unit, which overcomes the need for a One air-cooled hot and cold water machine needs to be fully loaded before starting the heating or cooling control, which leads to the defect that the indoor temperature adjustment is delayed.

The technical scheme of the present invention is as follows:

In a first aspect, an operation control method for an air-cooled cold and hot water unit, wherein, applied to an air conditioner including multiple groups of air-cooled cold and hot water units, the method includes:

Get the indoor temperature value;

According to the preset target indoor temperature value and the indoor temperature value, determine the initial number of starting air-cooled cold and hot water units;

Control the initial number of the air-cooled chilled and hot water units to start operation.

Optionally, the step of determining the initial number of activated air-cooled cold and hot water units according to the preset target temperature value and the indoor temperature value includes:

calculating the difference between the preset target indoor temperature value and the indoor temperature value to obtain a first temperature difference;

Matching the first temperature difference value with each difference value range in the preset first difference value range set, obtaining a matching difference value range, and using the starting initial number value corresponding to the difference value range as the The initial number; wherein, the first difference range set includes a plurality of difference ranges, and each difference range uniquely corresponds to an initial number; and/or

The manner of controlling the initial number of the air-cooled cold and hot water generating units to start and run is as follows: controlling the initial number of the air-cooled cold and hot water generating units to start and run synchronously.

Optionally, the initial number corresponding to each difference range in the first difference range set is:

When ΔT ₁ ≥ TN1, the initial number of air-cooled hot and cold water units that are started synchronously is N1;

When TN2≤ΔT ₁ <TN1, the initial number of air-cooled hot and cold water units that start and run synchronously is N2;

When TN3≤ΔT ₁ <TN2, the initial number of air-cooled hot and cold water units that start and run synchronously is N3;

When 0≤ΔT ₁ <TN3, the initial number of air-cooled hot and cold water units that start and run synchronously is N4;

Among them, ΔT ₁ is the first temperature difference, N1, N2, N3 and N4 are positive integers and decrease sequentially, and TN1, TN2 and TN3 are positive numbers and decrease sequentially.

Optionally, when the startup mode received by the air conditioner is the cooling mode, the indoor temperature value is the maximum indoor temperature value among all indoor temperature values after removing the maximum value from the collected indoor temperatures of multiple rooms; When the startup mode of the device is the heating mode, the indoor temperature value is the temperature value with the smallest indoor temperature among all the indoor temperature values after removing the minimum value from the collected indoor temperatures of multiple rooms.

Optionally, after the control of the initial number of the air-cooled cold and hot water units starts and operates, it further includes:

Calculate the difference between the inlet water temperature of the indoor unit and the preset temperature set for the cooling host to obtain the second temperature difference, or calculate the difference between the inlet water temperature of the indoor unit and the preset temperature for the heating host, to obtain The third temperature difference, and obtain the water temperature temperature drop rate;

According to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value and the water temperature temperature drop rate, determine the adjustment control information of the air-cooled cold and hot water unit; wherein, the adjustment The control information is the number of the air-cooled cold and hot water units controlled to be started or closed within the target control time;

The operation of the air-cooled cold and hot water unit is controlled according to the adjustment control information.

Optionally, determining the adjustment control information of the air-cooled cold and hot water unit according to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value and the water temperature temperature drop rate The steps include:

respectively acquiring the first water inlet temperature of each indoor unit at the first moment and the second inlet water temperature of each indoor unit at the second moment; wherein, there is a preset interval time between the first moment and the second moment;

Calculate the average value of the first inlet water temperature and the average value of the second inlet water temperature and the difference between the average value of the first inlet water temperature and the second inlet water temperature, and according to the difference and The preset interval duration determines the water temperature drop rate;

According to the second temperature difference range set corresponding to the second temperature difference, or the third temperature difference range set corresponding to the third temperature difference, combined with the temperature drop rate range corresponding to the water temperature temperature drop rate set to obtain the first adjustment control information of the air-cooled cold and hot water unit corresponding to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value and the water temperature temperature drop rate Corresponding second adjustment control information of the air-cooled cold and hot water unit;

Wherein, the second temperature difference range set includes a plurality of second temperature difference ranges, the third temperature difference range set includes a plurality of third temperature difference ranges, and the temperature drop rate range set includes a plurality of Water temperature temperature drop rate range;

Any second temperature difference range in the second temperature difference range set and any water temperature temperature drop rate range in the temperature drop rate range set uniquely correspond to one piece of first adjustment control information;

Any third temperature difference range in the third temperature difference range set and any water temperature temperature drop rate range in the temperature drop rate range set uniquely correspond to one piece of second adjustment control information.

Optionally, the operation mode corresponding to the second temperature difference range set is the cooling mode; any one of the second temperature difference range and the temperature drop rate range set in the second temperature difference range set The water temperature and temperature drop rate ranges uniquely correspond to one first adjustment control information including:

When the second temperature difference is greater than or equal to T1, and the water temperature temperature drop rate is less than or equal to Tt1, then control the air-cooled cold and hot water units to be turned on or off in turn according to the operating time of each air-cooled cold and hot machine;

When the second temperature difference is greater than T2 and less than T1, and when the temperature drop rate of the water temperature is greater than ΔTt1, each air-cooled cold and hot water unit is turned off in sequence every first preset time interval; When the temperature drop rate is less than ΔTt2, the air-cooled and hot-water units are controlled to be turned on or off in sequence according to the operating time of each air-cooled cooling and heating unit;

When the second temperature difference is greater than T4 and less than T3, the air-cooled cold and hot water unit is controlled to shut down every second preset time interval;

When the second temperature difference is less than or equal to T4, the air-cooled cold and hot water units are controlled to be shut down in sequence every third preset time interval;

Wherein, the Tc is the set temperature of the cooling host, the Tin is the inlet water temperature of the indoor unit, ΔTt1 and ΔTt2 are the preset first water temperature temperature drop rate threshold and the preset second water temperature temperature drop rate threshold, respectively, T1, T2, T3 and T4 are the preset first temperature difference threshold, the preset second temperature difference threshold, the third temperature difference threshold and the fourth temperature difference threshold, respectively, and T1>T2>T3>T4, ΔTt2≤ΔTt1 for the third preset duration less than the second preset duration.

Optionally, when the second temperature difference is greater than or equal to T1, and the water temperature temperature drop rate is greater than ΔTt1, keep the number of activated air-cooled cold and hot water units unchanged;

When the second temperature difference is greater than or equal to T3 and less than or equal to T2, keep the number of activated air-cooled cold and hot water units unchanged;

And, when the second temperature difference is greater than T2 and less than T1, and the range of the water temperature temperature drop rate is greater than or equal to ΔTt2 and less than or equal to ΔTt1, keep the number of air-cooled cold and hot water units activated unchanged. .

Optionally, the operation mode corresponding to the third temperature difference range set is a heating mode; any third temperature difference range in the third temperature difference range set and any temperature drop rate range set in the set. Each of the water temperature temperature drop rate ranges uniquely corresponds to a second adjustment control information including:

When the third temperature difference is less than or equal to T5, and the water temperature temperature drop rate is less than or equal to ΔTt3, control the air-cooled cold and hot water units to be turned on or off in turn according to the operating time of each air-cooled cold and hot machine;

When the third temperature difference is greater than T5 and less than T6, and when the water temperature temperature drop rate is greater than ΔTt1, each air-cooled cold and hot water unit is turned off in turn every fourth preset time period; when the water temperature temperature drop rate is greater than ΔTt1 When it is less than ΔTt4, control the air-cooled cold and hot water units to turn on or off in turn according to the operating time of each air-cooled hot and cold unit;

When the third temperature difference is greater than T7 and less than T8, the air-cooled cold and hot water unit is controlled to shut down every fifth preset time period;

When the third temperature difference is greater than or equal to T8, the air-cooled cold and hot water units are controlled to be shut down in sequence every sixth preset time interval;

Wherein, the Th is the set temperature of the heating host, the Tin is the inlet water temperature of the indoor unit, ΔTt3 and ΔTt4 are the preset third water temperature temperature drop rate threshold and the preset fourth water temperature temperature drop rate threshold, respectively, T5 , T6, T7 and T8 are respectively the preset fifth temperature difference threshold, the preset sixth temperature difference threshold, the seventh temperature difference threshold and the eighth temperature difference threshold, and T8>T7>T6>T5, ΔTt4≤ΔTt3, the sixth preset The set duration is less than the fifth preset duration.

Optionally, when the second temperature difference is less than or equal to T5, and the water temperature temperature drop rate is greater than ΔTt3, keep the number of activated air-cooled cold and hot water units unchanged;

When the second temperature difference is greater than or equal to T6 and less than or equal to T7, keep the number of activated air-cooled cold and hot water units unchanged;

And when the second temperature difference is greater than T5 and less than T6, when the water temperature temperature drop rate is greater than or equal to ΔTt4 and less than or equal to ΔTt3, keep the number of air-cooled cold and hot water units activated unchanged.

In a second aspect, the present embodiment discloses an air conditioner, which includes a memory, multiple groups of air-cooled cold and hot water units, a processor, and a computer program stored in the memory and executable on the processor, When the processor executes the computer program, the steps of the operation control method for the air-cooled cold water unit are realized.

The third aspect, the present embodiment discloses a kind of air conditioning control device, wherein, comprises:

The indoor temperature acquisition module is used to acquire the indoor temperature value;

a data processing module, configured to determine the initial number of air-cooled cold and hot water units to start according to the preset target indoor temperature value and the indoor temperature value;

A control module, configured to control the initial number of the air-cooled cold and hot water units to start running.

In a fourth aspect, this embodiment discloses a computer-readable storage medium on which a computer program is stored, wherein, when the computer program is executed by a processor, the operation control method of the air-cooled cold water unit is realized .

Beneficial effects, the present invention provides an operation control method for an air-cooled cold and hot water unit, wherein the initial temperature difference between the preset target indoor temperature value and the indoor temperature value is determined to start the air-cooled cold and hot water unit. and control the initial number of the air-cooled cold and hot water units to start the cooling mode or the heating mode synchronously. This embodiment controls the number of air-cooled cold and hot water units loaded in the initial stage of the air-conditioning cooling mode and/or the heating mode, so as to achieve the actual effect of rapid cooling/heating, and reduce the delay time of indoor temperature cooling or heating , improve the working efficiency of the air conditioner.

Description of drawings

Fig. 1 is the step flow diagram of the operation control method of the air-cooled cold and hot water unit according to the embodiment of the present invention;

2 is a schematic diagram of the relationship between each difference range corresponding to the first difference range set in the embodiment of the present invention and its matching initial number;

3 is a schematic diagram of the temperature range in the extreme-speed refrigeration mode in the specific application and implementation of the method of the present invention;

4 is a flow chart of air-conditioning control steps in a cooling mode or a heating mode in a specific application embodiment of the method of the present invention;

5 is a schematic diagram of the temperature range in the extreme-speed heating mode in the specific application and implementation of the method of the present invention;

FIG. 6 is a schematic diagram of a temperature range in a refrigeration mode during the specific application and implementation of the method of the present invention;

7 is a schematic diagram of the temperature range in the heating mode in the specific application and implementation of the method of the present invention;

8 is a schematic block diagram of the structure of the air conditioner according to the present invention;

FIG. 9 is a block diagram showing the structural principle of the air-conditioning control device according to the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

It will be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" as used herein can include the plural forms as well, unless expressly stated otherwise. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of stated features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components and/or groups thereof. It will be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Furthermore, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combination of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in a general dictionary, should be understood to have meanings consistent with their meanings in the context of the prior art and, unless specifically defined as herein, should not be interpreted in idealistic or overly formal meaning to explain.

The inventor found that when the air-conditioning system in the prior art is in the cascade mode of the air-cooled cold and hot water units, the cooling and heating of the indoor temperature can only be adjusted after all the air-cooled cold and hot water units are loaded. All modules in the cold and hot water unit are loaded, which takes a certain amount of time. As a result, the cooling and heating regulation of indoor temperature is inefficient during the opening period of the air-conditioning system. Therefore, it cannot meet the needs of users for rapid cooling or rapid heating of indoor temperature. need.

In order to overcome the above problems in the prior art, the present invention provides an operation control method for an air-cooled cold and hot water unit. The number of air-cooled hot and cold water units that need to be started, according to the determined number of air-cooled cold and hot water units, control the determined number of air-cooled cold and hot water units to start operation synchronously, so as to reduce the number of air-cooled cold and hot water units. Loading in sequence, because the required loading time is too long, the adjustment of the indoor temperature is delayed, and the defect of the low efficiency of the air conditioner to adjust the indoor temperature is caused.

For example: when the difference between the indoor temperature and the preset temperature value is within the first difference value range, the control will synchronously start M air-cooled hot and cold water machines to start and run synchronously, and the difference between the indoor temperature and the preset temperature value will be The difference is in the second difference range, and the difference in the second difference range is greater than the difference in the first difference range, then the synchronous start of M+1 air-cooled hot and cold water machines can be controlled to start and run synchronously , in order to achieve the highest efficiency of indoor temperature regulation in the shortest loading time and reduce the waiting time of users.

The method disclosed in the present invention will be explained in more detail below with reference to the accompanying drawings.

This embodiment provides an operation control method for an air-cooled cold and hot water unit, as shown in FIG. 1 , which is applied to an air conditioner including multiple groups of air-cooled cold and hot water units. The method includes:

Step S1, acquiring an indoor temperature value.

When the air conditioner receives an operation instruction to enter the cooling mode or to enter the heating mode, the indoor temperature value is collected, and the indoor temperature value is the temperature value of the end of the indoor unit of the air conditioner, that is, the indoor side fan or floor heating. The actual indoor temperature value of the radiator.

This embodiment is applied to a central air conditioner. When multiple indoor temperature values are collected from multiple rooms, when the startup mode received by the air conditioner is the cooling mode, all indoor temperatures after the maximum value is removed from the collected indoor temperatures of multiple rooms Among the temperature values, the temperature value with the largest indoor temperature is used as the indoor temperature value. When the startup mode received by the air conditioner is the heating mode, the indoor temperature value in all indoor temperature values after the minimum value is removed from the collected indoor temperatures in multiple rooms is the indoor temperature value. The temperature value with the smallest temperature is used as the indoor temperature value, so as to avoid a large difference between the adjusted indoor temperature value and a preset target indoor temperature value in a certain room.

Step S2: Determine the initial number of activated air-cooled cold and hot water units according to the preset target indoor temperature value and the indoor temperature value.

When the indoor temperature value is collected in the above step S1, the initial number of air-cooled cold and hot water units to be activated is determined according to the preset target indoor temperature value and the collected indoor temperature value.

Specifically, the preset target indoor temperature value is the temperature value set by the user and needs to be adjusted, and according to the temperature difference between the collected indoor temperature value and the preset target indoor temperature value, it is determined that the synchronous start operation is required. The number of air-cooled hot and cold water units.

Specifically, according to the first temperature difference between the preset target temperature value and the indoor temperature value, the step of determining the initial number of air-cooled cold and hot water units to start includes:

Matching the first temperature difference value between the preset target indoor temperature value and the indoor temperature value with each difference value range in the preset first difference value range set, obtaining the matching difference value range, and according to the difference The initial number of startup numbers corresponding to the value range is obtained, and the initial number of numbers is obtained; wherein, the first difference range set includes a plurality of difference ranges, and each difference range uniquely corresponds to a value of the initial number of startups.

A first difference range set is pre-established, the first difference range set contains a plurality of difference ranges corresponding to the first temperature difference between the preset target indoor temperature value and the indoor temperature value, and each difference The value range corresponds to an initial number, so when the first temperature difference is calculated, the air-cooling cooling that needs to run synchronously can be determined according to the initial number corresponding to the difference range where the first temperature difference is located. The initial number of hot water units.

Specifically, with reference to FIG. 2 , the initial number of the corresponding difference ranges in the first difference range set that match them is:

Step S21, when ΔT ₁ ≥ TN1, the initial number of air-cooled cold and hot water units that are started synchronously is N1;

Step S22, when TN2≤ΔT ₁ <TN1, the initial number of air-cooled cold and hot water units that start and run synchronously is N2;

Step S23, when TN3≤ΔT ₁ <TN2, the initial number of air-cooled cold and hot water units that start and run synchronously is N3;

Step S24, when 0≤ΔT ₁ <TN3, the initial number of the air-cooled cold and hot water units that start and run synchronously is N4;

Among them, ΔT ₁ is the first temperature difference, N1, N2, N3 and N4 are positive integers and decrease sequentially, and TN1, TN2 and TN3 are positive numbers and decrease sequentially.

In an embodiment, with reference to FIG. 3 , if the number of air-cooled and hot air units in the air-conditioning system is 4, the numbers of N1, N2, N3 and N4 are 4, 3, 2 and 4 respectively. 1. The TN1, TN2 and TN3 are 15, 10 and 5, respectively.

Step S3, controlling the initial number of the air-cooled cold and hot water units to start running.

When the value of the initial number is obtained in the above steps, in this step, the initial number of air-cooled cold and hot water units is controlled to start operation, so as to realize the time-consuming start-up of the air-cooled cold and hot water units and obtain the best cooling or heating efficiency. Keep it up for best results.

In an embodiment, in order to better reduce the time required for the start-up of the air-cooled chilled and hot water units, the method of controlling the initial number of the air-cooled chilled and hot water units to start up and run in this step is: Controlling the initial number of the air-cooled cold and hot water units to start running synchronously.

Further, in this embodiment, the control mode corresponding to the steps from step S1 to step S3 is regarded as the extreme-speed cooling mode or the extreme-speed heating mode, and the initial number of air-cooled, cold-heated, and heated After the fan is started and loaded, the corresponding ordinary cooling operation and ordinary heating mode are also executed respectively, so as to achieve better indoor temperature control effect.

Therefore, after the control of the initial number of the air-cooled cold and hot water units starts and runs synchronously, as shown in Figure 4, it also includes:

Step S4: Calculate the second temperature difference between the inlet water temperature of the indoor unit and the preset temperature of the cooling host, or calculate the second temperature difference between the inlet water temperature of the indoor unit and the preset temperature of the heating host. Three temperature differences, and obtain the water temperature temperature drop rate.

In this step, if the cooling mode is executed, first calculate the difference between the inlet water temperature of the indoor unit and the preset temperature of the cooling host to obtain the second temperature difference, or, if the heating mode is executed, calculate The difference between the inlet water temperature of the indoor unit and the set temperature of the preset heating host is used to obtain the third temperature difference, and at the same time, the temperature drop rate of the water temperature is obtained.

The calculation formula of the water temperature temperature drop rate is:

ΔTt=(Tt1-Tt2)/(t2-t1), where the interval between t2 and t1 is the preset duration value, Tin is the inlet water temperature of the indoor unit fan coil water pipe, Tt2 is the average inlet water temperature at t2, and Tt1 is The average temperature of the inlet water at time t1. According to the above formula, the temperature drop rate of the water temperature corresponding to the preset interval time can be calculated.

Step S5, according to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value and the water temperature temperature drop rate to determine the adjustment control information of the air-cooled cold water unit; wherein, The adjustment control information is the number of the air-cooled cold and hot water units controlled to be activated or deactivated within the target control time.

In this step, the air-cooled cold and hot water unit is determined according to the second temperature difference value and the water temperature temperature drop rate obtained in the above steps, or the third temperature difference value and the water temperature temperature drop rate The adjustment control information is the adjustment control information for the air-cooled cold and hot water units, specifically the number of the air-cooled cold and hot water units controlled to be activated or closed within the target control time.

Specifically, according to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value and the water temperature temperature drop rate to determine the adjustment control information of the air-cooled cold water unit Steps include:

Obtain the average temperature value of the inlet water temperature of each indoor unit, and calculate the difference between the average temperature values of the preset interval time, and combine the duration value of the preset interval time to obtain the water temperature temperature drop rate;

According to the second temperature difference range set corresponding to the second temperature difference, or the third temperature difference range set corresponding to the third temperature difference, combined with the temperature drop rate range corresponding to the water temperature temperature drop rate set, to obtain the first adjustment control information of the air-cooled cold and hot water unit corresponding to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value corresponding to the water temperature temperature drop rate the second adjustment control information of the air-cooled cold and hot water unit;

Wherein, the second temperature difference range set includes a plurality of second temperature difference ranges, the third temperature difference range set includes a plurality of third temperature difference ranges, and the temperature drop rate range set includes a plurality of Water temperature temperature drop rate range;

Any second temperature difference range in the second temperature difference range set and any water temperature temperature drop rate range in the temperature drop rate range set uniquely correspond to one piece of first adjustment control information;

Any third temperature difference range in the third temperature difference range set and any water temperature temperature drop rate range in the temperature drop rate range set uniquely correspond to one piece of second adjustment control information.

A second temperature difference range set and a third temperature difference range set are pre-established, which respectively contain a plurality of second temperature ranges and a plurality of third temperature difference ranges, then each second temperature difference can find a corresponding The second temperature range of , each calculated third temperature difference can find a corresponding third temperature difference range in the third temperature difference range. The second temperature difference range is concentrated to find the corresponding second temperature difference range in the range of 3-5. If the third temperature difference value is 5, a third temperature difference value range corresponding to a range of 4-6 can be found in the second temperature difference value range set.

Specifically, the operation mode corresponding to the second temperature difference range set is the cooling mode; any one of the second temperature difference range in the second temperature difference range set and any one of the temperature drop rate range set The water temperature and temperature drop rate ranges uniquely correspond to one first adjustment control information including:

When the difference range corresponding to the second temperature difference is that the second temperature difference is greater than or equal to T1, and the range corresponding to the water temperature temperature drop rate is that the water temperature temperature drop rate is less than or equal to Tt1, Then according to the start-up operation time of each air-cooled cooling and heating unit, the air-cooled cooling and hot water units are controlled to be turned on or off in sequence;

When the range of the difference corresponding to the second temperature difference is that the second temperature difference is greater than T2 and less than T1, and the range of the water temperature temperature drop rate is that the water temperature temperature drop rate is greater than ΔTt1, then every interval Turn off each air-cooled cold and hot water unit in sequence for a preset duration; when the water temperature temperature drop rate range is ΔTt<ΔTt2, the air-cooled cold and hot water units are controlled to be turned on or off in turn according to the operating time of each air-cooled hot and cold unit ;

When the range of the difference corresponding to the second temperature difference is that the second temperature difference is greater than T4 and less than T3, the air-cooled cold and hot water unit is controlled to shut down every second preset time interval;

When the range of the difference corresponding to the second temperature difference is that the second temperature difference is less than or equal to T4, the air-cooled cold and hot water units are controlled to be shut down in sequence every third preset time interval;

Wherein, the Tc is the set temperature of the cooling host, the Tin is the inlet water temperature of the indoor unit, ΔTt1 and ΔTt2 are the preset first water temperature temperature drop rate threshold and the preset second water temperature temperature drop rate threshold, respectively, T1, T2, T3 and T4 are the preset first temperature difference threshold, the preset second temperature difference threshold, the third temperature difference threshold and the fourth temperature difference threshold, respectively, and T1>T2>T3>T4, ΔTt2≤ΔTt1, the third preset The duration is less than the second preset duration.

Further, when the difference range corresponding to the second temperature difference is that the second temperature difference is greater than or equal to T1, and the water temperature temperature drop rate range is that the water temperature temperature drop rate is greater than ΔTt1, then keep The number of activated air-cooled hot and cold water units remains unchanged;

When the difference range corresponding to the second temperature difference is that the second temperature difference is greater than or equal to T3 and less than or equal to T2, keep the number of air-cooled cold and hot water units activated unchanged;

And when the difference range corresponding to the second temperature difference is that the second temperature difference is greater than T2 and less than T1, in the water temperature temperature drop rate range, the water temperature temperature drop rate range is greater than or equal to ΔTt2 and When it is less than or equal to ΔTt1, keep the number of air-cooled cold and hot water units that are started unchanged.

When the control mode is the heating mode, the third temperature difference value corresponds to the difference value range in the third temperature difference value range set, and any third temperature difference value range in the third temperature difference value range set And any one of the water temperature temperature drop rate ranges in the temperature drop rate range set uniquely corresponds to a second adjustment control information, specifically, including:

When the difference range corresponding to the third temperature difference is that the third temperature difference is less than or equal to T5, and the water temperature temperature drop rate range is that the water temperature temperature drop rate is less than or equal to ΔTt3, according to each wind The running time of the cooling and heating units controls the opening or closing of the air-cooled cooling and hot water units in sequence;

When the difference range corresponding to the third temperature difference is that the third temperature difference is greater than T5 and less than T6, and when the water temperature temperature drop rate is greater than ΔTt3, each fan is turned off in sequence every fourth preset time period. Cold and hot water units; when the water temperature temperature drop rate range is that the water temperature temperature drop rate is less than ΔTt4, the air-cooled cold and hot water units are controlled to be turned on or off in turn according to the operating time of each air-cooled hot and cold engine;

When the difference range corresponding to the third temperature difference is that the third temperature difference is greater than T7 and less than T8, the air-cooled cold and hot water unit is controlled to shut down every fifth preset time period;

When the difference range corresponding to the second temperature difference is that the third temperature difference is greater than or equal to T8, the air-cooled cold and hot water units are controlled to be shut down in sequence every sixth preset time period;

Wherein, the Th is the set temperature of the heating host, the Tin is the inlet water temperature of the indoor unit, ΔTt3 and ΔTt4 are the preset third water temperature temperature drop rate threshold and the preset fourth water temperature temperature drop rate threshold, respectively, T5 , T6, T7 and T8 are respectively the preset fifth temperature difference threshold, the preset sixth temperature difference threshold, the seventh temperature difference threshold and the eighth temperature difference threshold, and T8>T7>T6>T5, ΔTt4≤ΔTt3, the sixth preset The set duration is less than the fifth preset duration.

Further, when the difference range corresponding to the second temperature difference is that the second temperature difference is less than or equal to T5, and the water temperature temperature drop rate range is that the water temperature temperature drop rate is greater than ΔTt3, then keep The number of activated air-cooled hot and cold water units remains unchanged;

When the range of the difference corresponding to the second temperature difference is that the second temperature difference is greater than or equal to T6 and less than or equal to T7, keep the number of air-cooled cold and hot water units activated unchanged;

And when the difference range corresponding to the second temperature difference is when the second temperature difference is greater than T5 and less than T6, in the water temperature temperature drop rate range, the water temperature temperature drop rate is greater than or equal to ΔTt4 and less than When it is equal to ΔTt3, keep the number of air-cooled cold and hot water units activated unchanged.

Step S6: Control the operation of the air-cooled cold and hot water unit according to the adjustment control information.

After the above-mentioned adjustment control information is obtained, the number of the air-cooled cold and hot water units to be activated or closed is controlled according to the target control time corresponding to the above-mentioned adjustment control information, and the operation of the air-cooled cold and hot water units is controlled, thereby To realize the cooling control and heating control of the air conditioner, if the air-cooled cold and hot water unit has entered the cooling or heating mode, the above step S6 is performed until the cooling mode or the heating mode is exited.

Specifically, the method provided by the embodiment of the present invention will be further described in more detail below with reference to FIG. 3 to FIG. 7 .

When the air-cooled chilled and hot water unit is initially turned on, it can enter the extreme cooling mode-cooling mode and the extreme heating mode-heating mode according to whether the received control command corresponds to the cooling mode or the heating mode.

3.1 Extreme cooling mode

Combined with Figure 3, the extreme cooling mode includes the following steps:

a) If △T ₁ ≥ 15℃, 4 units are loaded and run at the same time;

b) If 10≤△T1 < ₁₅ ℃, 3 units are loaded and run at the same time;

c) If 5≤△T1 < ₁₀ ℃, 2 units are loaded and run at the same time;

d) If 0≤△T1 <5℃, _one unit is loaded and operated;

Further: After the initial loading operation, the normal loading and unloading control of the cooling mode is restored.

3.2 Cooling mode:

As shown in Figure 5, the cooling mode includes the following steps:

a) When Tin≥Tc+4: Tc: the set temperature of the cooling host, Th: the set temperature of the heating host; Tin: the inlet water temperature

1) When the water temperature temperature drop rate ΔTt ≤ 0.5, each module operates early and shuts down late, and controls the air-cooled cold and hot water units to turn on or off in sequence;

2) When the water temperature temperature drop rate ΔTt>0.5, keep the number of modules turned on unchanged.

b) When Tc+4>Tin>Tc+1:

1) When ΔTt>0.5, turn off the modules in sequence every 5min;

2) When 0.2≤ΔTt≤0.5, the number of opened modules remains unchanged;

3) When ΔTt<0.2, according to the principle of early operation, early shutdown and late operation, late shutdown, the air-cooled cold and hot water units are controlled to be turned on or off in sequence.

c) When Tc-1≤Tin≤Tc+1, the number of modules remains the same;

d) When Tc-2.5<Tin<Tc-1, stop every 5 minutes, and each module still follows the opening six and three stop;

e) When Tin≤Tc-2.5, the modules will be shut down in an emergency order at 2-minute intervals, and each module still follows the rules of opening six and stopping three.

3.3 Extreme heating mode

As shown in Figure 6, the steps include the following:

Room T is the minimum room temperature after removing the minimum value from all room temperatures (excluding the room that is excluded); the set temperature is the set temperature value corresponding to the end of the selected room temperature, if the room temperature at the two ends is the same, then take △ The maximum difference of T2 is the set temperature;

When the unit is initially turned on and running:

a) If △T ₁ ≥ 25℃, 4 units are loaded and run at the same time;

b) If 18≤△T1 <25℃, ₃ units are loaded and run at the same time;

c) If 10≤△T ₁ <18℃, 2 units are loaded and run at the same time;

d) If 0≤△T1 <10℃, _one unit is loaded and operated;

Further, after the initial loading operation, the heating mode is restored to the normal loading and unloading control;

3.4 Heating mode, as shown in Figure 7, includes the following steps:

a) When Tin≤Th-4:

1) When the water temperature temperature rise rate ΔTt ≤ 0.5, according to the principle of early operation and early shutdown, late operation and late shutdown, the air-cooled cold and hot water units are controlled to be turned on or off in sequence (ts factory default is 1 minute);

2) When the water temperature temperature rise rate ΔTt>0.5, keep the number of compressors turned on unchanged;

b) When Th-1>Tin>Th-4:

1) When ΔTt>0.5, turn off the compressors in sequence every 5min;

2) When 0.2≤ΔTt≤0.5, the number of compressors turned on remains unchanged;

3) When ΔTt < 0.2, according to the principle of early operation and late operation, late operation and late shutdown, the air-cooled cold and hot water units are controlled to be turned on or off in sequence.

c) When Th-1≤Tin≤Th+1, the number of air-cooled cold and hot water units remains the same;

d) When Th+1＜Tin＜Th+2.5, stop every 5 minutes, and each air-cooled hot and cold water unit stops for at least 3 minutes each time before starting up (the principle of opening six and stopping three);

e) When Tin ≥ Th+2.5, the compressors will be shut down in an emergency order at 2-minute intervals, and each compressor will still run for at least 6 minutes each time it starts to stop, and each time it stops for at least 3 minutes before it starts up (the principle of opening six and stopping three) ).

Further, when loading occurs in the cooling/heating mode operation, the frequencies of the compressors currently in operation are not lower than 85% of their respective maximum allowable frequencies (load percentage).

In the second aspect, the present embodiment discloses an air conditioner, as shown in FIG. 8 , which includes a memory, multiple groups of air-cooled cold and hot water units, a processor, and a computer stored in the memory and running on the processor A program, when the processor executes the computer program, realizes the steps of the operation control method of the air-cooled cold and hot water unit.

Specifically, as shown in FIG. 8 , the air conditioner includes at least one processor (processor) 20 and memory (memory) 22 , and may also include an air-cooled cold water unit 21 , a communication interface (Communications Interface) 23 and a bus 24 . Among them, the processor 20 , the air-cooled cold water unit 21 , the memory 22 and the communication interface 23 can communicate with each other through the bus 24 . The air-cooled chilled and hot water unit 21 is set to display the user guide interface preset in the initial setting mode. The communication interface 23 can transmit information. The processor 20 can call the logic instructions in the memory 22 to execute the steps of the operation control method of the air-cooled cold water unit in the above embodiment.

In addition, the above-mentioned logic instructions in the memory 22 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

As a computer-readable storage medium, the memory 22 may be configured to store software programs and computer-executable programs, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 30 executes functional applications and data processing by running the software programs, instructions or modules stored in the memory 22, ie, implements the methods in the above embodiments.

The memory 22 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Additionally, memory 22 may include high-speed random access memory, and may also include non-volatile memory. For example, U disk, removable hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes, or temporary state storage medium.

The third aspect, the present embodiment discloses a kind of air-conditioning control device, as shown in Figure 9, comprising:

The indoor temperature acquisition module 100 is used to acquire the indoor temperature value; its function is as described in step S1.

The data processing module 200 is used to determine the initial number of air-cooled cold and hot water units to start according to the preset target indoor temperature value and the indoor temperature value; its function is as described in step S2

The control module 300 is configured to control the initial number of the air-cooled chilled and hot water units to start running, and its function is as described in step S3.

On the other hand, based on the above control method, this embodiment further provides a computer-readable storage medium, wherein the computer-readable storage medium stores one or more programs, and the one or more programs It can be executed by one or more processors to realize the steps of the operation control method of the air-cooled chilled and hot water unit.

The invention provides an operation control method for an air-cooled cold and hot water unit. The initial number of the air-cooled cold and hot water units to be started is determined by a first temperature difference between a preset target indoor temperature value and an indoor temperature value, and the Controlling the initial number of the air-cooled chilled and hot water units starts a cooling mode or a heating mode. This embodiment controls the number of air-cooled cold and hot water units loaded in the initial stage of the air-conditioning cooling mode and/or the heating mode, so as to achieve the actual effect of rapid cooling/heating, and reduce the delay time of indoor temperature cooling or heating , improve the working efficiency of the air conditioner.

It can be understood that for those of ordinary skill in the art, equivalent replacements or changes can be made according to the technical solutions of the present invention and the inventive concept thereof, and all these changes or replacements should belong to the protection scope of the appended claims of the present invention.

Claims (11)

1. an operation control method of an air-cooled cold and hot water unit, characterized in that, applied to an air conditioner comprising multiple groups of air-cooled cold and hot water units, the method comprising: Get the indoor temperature value; According to the preset target indoor temperature value and the indoor temperature value, determine the initial number of starting air-cooled cold and hot water units; Control the initial number of the air-cooled cold and hot water units to start operation; After the control of the initial number of the air-cooled cold and hot water units after starting operation includes: Calculate the difference between the inlet water temperature of the indoor unit and the preset temperature set for the cooling host to obtain the second temperature difference, or calculate the difference between the inlet water temperature of the indoor unit and the preset temperature for the heating host to obtain The third temperature difference, and obtain the water temperature temperature drop rate; According to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value and the water temperature temperature drop rate, determine the adjustment control information of the air-cooled cold and hot water unit; wherein, the adjustment The control information includes the number of the air-cooled cold and hot water units controlled to be activated or deactivated within the target control time; controlling the operation of the air-cooled cold and hot water unit according to the adjustment control information; The second set of temperature difference ranges includes a plurality of second temperature difference ranges; The operation mode corresponding to the second temperature difference range set is the cooling mode; any one of the second temperature difference range and the temperature drop rate range set in the second temperature difference range set, the water temperature temperature drop rate Each range uniquely corresponds to a first adjustment control information; Wherein, when the second temperature difference is greater than or equal to T1, and the water temperature temperature drop rate is greater than ΔTt1, the number of activated air-cooled cold and hot water units remains unchanged; When the second temperature difference is greater than or equal to T3 and less than or equal to T2, keep the number of activated air-cooled cold and hot water units unchanged; When the second temperature difference is greater than T2 and less than T1, and when the water temperature temperature drop rate range is greater than or equal to ΔTt2 and less than or equal to ΔTt1, keep the number of air-cooled cold and hot water units activated unchanged; Among them, ΔTt1 and ΔTt2 are the preset first water temperature temperature drop rate threshold and the preset second water temperature temperature drop rate threshold, respectively, and T1, T2, T3 and T4 are the preset first temperature difference threshold, preset second temperature difference threshold, The third temperature difference threshold and the fourth temperature difference threshold, and T1>T2>T3>T4, ΔTt2≤ΔTt1. 2 . The operation control method of the air-cooled cold and hot water unit according to claim 1 , wherein the initial number of the air-cooled cold and hot water units to be started is determined according to the preset target temperature value and the indoor temperature value. 3 . The steps include: Calculate the difference between the preset target indoor temperature value and the indoor temperature value, obtain a first temperature difference value, match the first temperature difference value with each difference value range in the preset first difference value range, and obtain match the difference range, and use the value of the starting initial number corresponding to the difference range as the initial number, wherein the preset first difference range includes a plurality of difference ranges, and each difference Each range uniquely corresponds to an initial number; and/or The manner of controlling the initial number of the air-cooled cold and hot water generating units to start and run is as follows: controlling the initial number of the air-cooled cold and hot water generating units to start and run synchronously. 3. The operation control method of an air-cooled cold water unit according to claim 2, wherein the initial number corresponding to each difference range in the preset first difference range is: When ΔT ₁ ≥ TN1, the initial number of air-cooled hot and cold water units that are started synchronously is N1; When TN2≤ΔT ₁ <TN1, the initial number of air-cooled hot and cold water units that start and run synchronously is N2; When TN3≤ΔT ₁ <TN2, the initial number of air-cooled hot and cold water units that start and run synchronously is N3; When 0≤ΔT ₁ <TN3, the initial number of air-cooled hot and cold water units that start and run synchronously is N4; Among them, ΔT ₁ is the first temperature difference, N1, N2, N3 and N4 are positive integers and decrease sequentially, and TN1, TN2 and TN3 are positive numbers and decrease sequentially. 4 . The operation control method of an air-cooled cold water unit according to claim 3 , wherein when the startup mode received by the air conditioner is the cooling mode, the indoor temperature value is the collected indoor temperature of multiple rooms. 5 . The maximum indoor temperature value among all the indoor temperature values after the maximum value is removed from the air conditioner; when the startup mode received by the air conditioner is the heating mode, the indoor temperature value is the maximum indoor temperature value after removing the minimum value from the collected indoor temperatures of multiple rooms. The temperature value with the smallest indoor temperature among the indoor temperature values. 5 . The operation control method for an air-cooled chilled and hot water unit according to claim 1 , wherein the method is based on the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value. 6 . The step of determining the adjustment control information of the air-cooled cold and hot water unit with the water temperature temperature drop rate includes: respectively acquiring the first water inlet temperature of each indoor unit at the first moment and the second inlet water temperature of each indoor unit at the second moment; wherein, there is a preset interval time between the first moment and the second moment; Calculate the average value of the first inlet water temperature and the average value of the second inlet water temperature and the difference between the average value of the first inlet water temperature and the second inlet water temperature, and according to the difference and The preset interval duration determines the water temperature drop rate; According to the second temperature difference range set corresponding to the second temperature difference, or the third temperature difference range set corresponding to the third temperature difference, combined with the temperature drop rate range corresponding to the water temperature temperature drop rate set, to obtain the first adjustment control information of the air-cooled cold and hot water unit corresponding to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value corresponding to the water temperature temperature drop rate the second adjustment control information of the air-cooled cold and hot water unit; Wherein, the third temperature difference range set includes a plurality of third temperature difference ranges, and the temperature drop rate range set includes a plurality of water temperature temperature drop rate ranges; Any third temperature difference range in the third temperature difference range set and any water temperature temperature drop rate range in the temperature drop rate range set uniquely correspond to one piece of second adjustment control information. 6 . The operation control method for an air-cooled chilled and hot water unit according to claim 5 , wherein the operation mode corresponding to the second temperature difference range set is a cooling mode; the second temperature difference range set is concentrated 6 . Any one of the second temperature difference ranges and any one of the water temperature temperature drop rate ranges in the set of the temperature drop rate ranges uniquely corresponds to a first adjustment control information including: When the second temperature difference is greater than or equal to T1, and the water temperature temperature drop rate is less than or equal to Tt1, the air-cooled cold and hot water units are controlled to be turned on or off in turn according to the start-up operation time of each air-cooled cold and hot machine. ; When the second temperature difference is greater than T2 and less than T1, and when the water temperature temperature drop rate is greater than ΔTt1, each air-cooled cold and hot water unit is turned off in sequence every first preset time period; When the drop rate is less than ΔTt2, the air-cooled and hot-water units are controlled to be turned on or off in sequence according to the operating time of each air-cooled and heated unit; When the second temperature difference is greater than T4 and less than T3, the air-cooled cold and hot water unit is controlled to shut down every second preset time interval; When the second temperature difference is less than or equal to T4, the air-cooled cold and hot water units are controlled to be shut down in sequence every third preset time interval; Among them, ΔTt1 and ΔTt2 are the preset first water temperature temperature drop rate threshold and the preset second water temperature temperature drop rate threshold, respectively, and T1, T2, T3 and T4 are the preset first temperature difference threshold, preset second temperature difference threshold, The third temperature difference threshold and the fourth temperature difference threshold are T1>T2>T3>T4, ΔTt2≤ΔTt1, and the third preset time period is smaller than the second preset time period. 7 . The operation control method for an air-cooled cold water unit according to claim 5 , wherein the operation mode corresponding to the third temperature difference range set is a heating mode; the third temperature difference range Any one of the third temperature difference value ranges in the set and any one of the water temperature temperature drop rate ranges in the set of temperature drop rate ranges uniquely correspond to a second adjustment control information including: When the third temperature difference is less than or equal to T5, and the water temperature temperature drop rate is less than or equal to ΔTt3, control the air-cooled cold and hot water units to turn on or off in turn according to the operating time of each air-cooled cold and hot machine; When the third temperature difference is greater than T5 and less than T6, and when the water temperature temperature drop rate is greater than ΔTt3, each air-cooled cold and hot water unit is turned off in turn every fourth preset time period; when the water temperature temperature drop rate is greater than ΔTt3 When it is less than ΔTt4, control the air-cooled cold and hot water units to turn on or off in turn according to the operating time of each air-cooled hot and cold unit; When the third temperature difference is greater than T7 and less than T8, the air-cooled cold and hot water unit is controlled to shut down every fifth preset time period; When the third temperature difference is greater than or equal to T8, the air-cooled cold and hot water units are controlled to be shut down in sequence every sixth preset time interval; Among them, ΔTt3 and ΔTt4 are the preset third water temperature temperature drop rate threshold and the preset fourth water temperature temperature drop rate threshold, respectively, T5, T6, T7 and T8 are the preset fifth temperature difference threshold, preset sixth temperature difference threshold, The seventh temperature difference threshold and the eighth temperature difference threshold, and T8>T7>T6>T5, ΔTt4≤ΔTt3, the sixth preset time period is smaller than the fifth preset time period. 8 . The operation control method for an air-cooled chilled and hot water unit according to claim 7 , wherein the operation mode corresponding to the third temperature difference range set is a heating mode; the third temperature difference range Any one of the third temperature difference value ranges in the set and any one of the water temperature temperature drop rate ranges in the set of temperature drop rate ranges uniquely correspond to a second adjustment control information including: When the second temperature difference is less than or equal to T5, and the water temperature temperature drop rate is greater than ΔTt3, the number of activated air-cooled cold and hot water units remains unchanged; When the second temperature difference is greater than or equal to T6 and less than or equal to T7, keep the number of activated air-cooled cold and hot water units unchanged; When the second temperature difference is greater than T5 and less than T6, and when the water temperature temperature drop rate is greater than or equal to ΔTt4 and less than or equal to ΔTt3, keep the number of activated air-cooled cold and hot water units unchanged; Among them, ΔTt3 and ΔTt4 are the preset third water temperature temperature drop rate threshold and the preset fourth water temperature temperature drop rate threshold, respectively, T5, T6, T7 and T8 are the preset fifth temperature difference threshold, preset sixth temperature difference threshold, The seventh temperature difference threshold and the eighth temperature difference threshold, and T8>T7>T6>T5, ΔTt4≤ΔTt3, the sixth preset time period is smaller than the fifth preset time period. 9. An air conditioner, characterized in that it comprises a memory, multiple groups of air-cooled cold and hot water units, a processor, and a computer program stored in the memory and running on the processor, the processor The method steps of any of claims 1-8 are implemented when the computer program is executed. 10. An air-conditioning control device, characterized in that, comprising: The indoor temperature acquisition module is used to acquire the indoor temperature value; a data processing module, configured to determine the initial number of air-cooled cold and hot water units to start according to the preset target indoor temperature value and the indoor temperature value; a control module for controlling the initial number of the air-cooled cold and hot water units to start running; After the control of the initial number of the air-cooled cold and hot water units after starting operation includes: Calculate the difference between the inlet water temperature of the indoor unit and the preset temperature set for the cooling host to obtain the second temperature difference, or calculate the difference between the inlet water temperature of the indoor unit and the preset temperature for the heating host to obtain The third temperature difference, and obtain the water temperature temperature drop rate; According to the second temperature difference value and the water temperature temperature drop rate, or the third temperature difference value and the water temperature temperature drop rate, determine the adjustment control information of the air-cooled cold and hot water unit; wherein, the adjustment The control information includes the number of the air-cooled cold and hot water units controlled to be activated or deactivated within the target control time; controlling the operation of the air-cooled cold and hot water unit according to the adjustment control information; The second set of temperature difference ranges includes a plurality of second temperature difference ranges; The operation mode corresponding to the second temperature difference range set is the cooling mode; any one of the second temperature difference range and the temperature drop rate range set in the second temperature difference range set, the water temperature temperature drop rate Each range uniquely corresponds to a first adjustment control information; Wherein, when the second temperature difference is greater than or equal to T1, and the water temperature temperature drop rate is greater than ΔTt1, the number of activated air-cooled cold and hot water units remains unchanged; When the second temperature difference is greater than or equal to T3 and less than or equal to T2, keep the number of activated air-cooled cold and hot water units unchanged; When the second temperature difference is greater than T2 and less than T1, and when the water temperature temperature drop rate range is greater than or equal to ΔTt2 and less than or equal to ΔTt1, keep the number of air-cooled cold and hot water units activated unchanged; Among them, ΔTt1 and ΔTt2 are the preset first water temperature temperature drop rate threshold and the preset second water temperature temperature drop rate threshold, respectively, and T1, T2, T3 and T4 are the preset first temperature difference threshold, preset second temperature difference threshold, The third temperature difference threshold and the fourth temperature difference threshold, and T1>T2>T3>T4, ΔTt2≤ΔTt1. 11. A computer-readable storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the air-cooled cold and hot water according to any one of claims 1-8 is realized. The operation control method of the unit.

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