CN112178860B - Operation control method of air-cooled cold and hot water unit and air conditioner - Google Patents
Operation control method of air-cooled cold and hot water unit and air conditioner Download PDFInfo
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- CN112178860B CN112178860B CN202011038860.6A CN202011038860A CN112178860B CN 112178860 B CN112178860 B CN 112178860B CN 202011038860 A CN202011038860 A CN 202011038860A CN 112178860 B CN112178860 B CN 112178860B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention provides an operation control method of an air-cooled cold and hot water unit and an air conditioner. The method determines the initial number of the air-cooled cold and hot water units to be started according to the actual value of the indoor temperature and the temperature to be regulated and controlled selected by the user, and controls the air-cooled cold and hot water units with the initial number to start and operate, so that the time consumed by loading and starting and the cooling and heating efficiency of the air conditioner are taken into consideration, the delay time of the indoor temperature cooling or heating is reduced, and the working efficiency of the air conditioner is improved.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an operation control method of an air-cooled cold and hot water unit and an air conditioner.
Background
Under the cascade mode of the air-cooled cold and hot water units, the loading time of the frequency conversion unit is long, so that the refrigeration/heat effect cannot be reflected in a short time. At present, a general control method is to control the load increasing and load reducing quantity of the unit according to the temperature difference between inlet water and set water temperature and the water temperature reduction rate. In the aspect of reliability, the air-cooled cold and hot water unit stays at a platform point during the starting and running process for a period of time, and the running frequency of each air-cooled cold and hot water unit can meet the loading condition after each air-cooled cold and hot water unit is started and runs for 6-7min, so that the running frequency of all the air-cooled cold and hot water units is required to be 24-28min after the four air-cooled cold and hot water units are cascaded, the actual water temperature rise/fall rate is slow, the time for regulating the indoor temperature to the target temperature is delayed, and the running control method for the air-cooled cold and hot water unit in the prior art cannot meet the requirement for quickly regulating the indoor temperature.
Therefore, the prior art is subject to further improvement.
Disclosure of Invention
In view of the above-mentioned disadvantages in the prior art, an object of the present invention is to provide an operation control method for an air-cooled chiller-heater unit and an air conditioner, which overcome the defect that in the prior art, in the cascade mode of the air-cooled chiller-heater units, heating or cooling control is started only when all air-cooled chiller-heaters need to be loaded, and thus indoor temperature adjustment is delayed.
The technical scheme of the invention is as follows:
in a first aspect, an operation control method for an air-cooled chiller-heater unit is applied to an air conditioner comprising a plurality of sets of air-cooled chiller-heater units, and the method comprises the following steps:
acquiring an indoor temperature value;
determining the initial number of the air-cooled cold and hot water units to be started according to a preset target indoor temperature value and the indoor temperature value;
and controlling the starting operation of the air-cooled cold and hot water units with the initial number.
Optionally, the step of determining the initial number of the air-cooled chiller-heater units to be started according to the preset target temperature value and the indoor temperature value includes:
calculating a difference value between the preset target indoor temperature value and the indoor temperature value to obtain a first temperature difference value;
matching the first temperature difference value with each difference value range in a preset first difference value range set to obtain a matched difference value range, and taking a starting initial number value corresponding to the difference value range as the initial number; the first difference range set comprises a plurality of difference ranges, and each difference range uniquely corresponds to one initial number; and/or
The mode for controlling the starting operation of the air-cooled cold and hot water units with the initial number is as follows: and controlling the synchronous starting operation of the air-cooled cold and hot water units with the initial number.
Optionally, the initial number corresponding to each difference range in the first difference range set is:
when Δ T1If the number of the air-cooled cold and hot water units is more than or equal to TN1, the initial number of the air-cooled cold and hot water units which are synchronously started is N1;
when TN2 is less than or equal to delta T1If the number is less than TN1, the initial number of the air-cooled cold and hot water units which are synchronously started to operate is N2;
when TN3 is less than or equal to delta T1If the number is less than TN2, the initial number of the air-cooled cold and hot water units which are synchronously started to operate is N3;
when the value is more than or equal to 0 and less than or equal to delta T1If the number is less than TN3, the initial number of the air-cooled cold and hot water units which are synchronously started to operate is N4;
wherein, Delta T1For the first temperature difference, N1, N2, N3, and N4 are positive integers and decrease in order, and TN1, TN2, and TN3 are positive integers and decrease in order.
Optionally, when the starting mode received by the air conditioner is the cooling mode, the indoor temperature value is the maximum indoor temperature value of all the collected indoor temperatures of the plurality of rooms, after the maximum indoor temperature value is removed; and when the starting mode received by the air conditioner is a heating mode, the indoor temperature value is the minimum indoor temperature value of all the collected indoor temperatures of the plurality of rooms after the minimum indoor temperature value is removed.
Optionally, after the controlling the initial number of the air-cooled chiller-heater units to start and operate, the method further includes:
calculating the difference value between the water inlet temperature of the indoor unit and the preset temperature of the preset refrigeration host to obtain a second temperature difference value, or calculating the difference value between the water inlet temperature of the indoor unit and the preset temperature of the preset heating host to obtain a third temperature difference value, and acquiring the temperature drop rate of the water temperature;
determining the adjusting control information of the air-cooled cold and hot water unit according to the second temperature difference and the water temperature drop rate or the third temperature difference and the water temperature drop rate; the adjusting control information is the number of the air-cooled cold and hot water units which are controlled to be started or closed within the target control time;
and controlling the air-cooled cold and hot water unit to operate according to the adjusting control information.
Optionally, the step of determining the adjustment control information of the air-cooled chiller-heater unit according to the second temperature difference and the water temperature drop rate, or the third temperature difference and the water temperature drop rate includes:
respectively acquiring a first water inlet temperature of each indoor unit at a first moment and a second water inlet temperature of each indoor unit at a second moment; the first time and the second time are separated by a preset interval duration;
calculating the average value of the first water inlet temperature, the average value of the second water inlet temperature and the difference value between the average values of the first water inlet temperature and the second water inlet temperature, and determining the water temperature drop rate according to the difference value and the preset interval duration;
according to a second temperature difference range set corresponding to the second temperature difference value or a third temperature difference range set corresponding to a third temperature difference value and in combination with a temperature reduction rate range set corresponding to the water temperature reduction rate, obtaining first regulation control information of the air-cooled cold and hot water unit corresponding to the second temperature difference value and the water temperature reduction rate or second regulation control information of the air-cooled cold and hot water unit corresponding to the third temperature difference value and the water temperature reduction rate;
wherein the set of second temperature difference ranges comprises a plurality of second temperature difference ranges, the set of third temperature difference ranges comprises a plurality of third temperature difference ranges, and the set of temperature drop rate ranges comprises a plurality of water temperature drop rate ranges;
any one of the second temperature difference range set and any one of the water temperature and temperature reduction rate range set uniquely correspond to one first adjustment control information;
any one third temperature difference range in the third temperature difference range set and any one water temperature and temperature reduction rate range in the temperature reduction rate range set are uniquely corresponding to one second adjustment control information.
Optionally, the operation mode corresponding to the second temperature difference range set is a cooling mode; any one of the second temperature difference range set and any one of the water temperature and temperature drop rate range set uniquely corresponds to one first adjustment control information, and the first adjustment control information comprises:
when the second temperature difference is greater than or equal to T1 and the temperature drop rate of the water temperature is less than or equal to Tt1, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the running time of each air-cooled cold and hot water machine;
when the second temperature difference value is greater than T2 and less than T1 and the temperature drop rate of the water temperature is greater than delta Tt1, closing the air-cooled cold and hot water units at intervals of a first preset time; or when the temperature drop rate of the water temperature is less than delta Tt2, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the operation duration of each air-cooled cold and hot water machine;
when the second temperature difference value is larger than T4 and smaller than T3, the air-cooled cold and hot water unit is controlled to stop at intervals of a second preset time length;
when the second temperature difference is smaller than or equal to T4, controlling the air-cooled cold and hot water unit to stop in sequence at intervals of a third preset time length;
the method comprises the steps that Tc is set temperature of a refrigeration host machine, Tin is inlet water temperature of an indoor machine, delta Tt1 and delta Tt2 are respectively preset first water temperature drop rate threshold and second water temperature drop rate threshold, T1, T2, T3 and T4 are respectively preset first temperature difference threshold, second temperature difference threshold, third temperature difference threshold and fourth temperature difference threshold, T1> T2> T3> T4, delta Tt2 is not more than delta Tt1, and third preset duration is smaller than second preset duration.
Optionally, when the second temperature difference is greater than or equal to T1 and the temperature drop rate of the water temperature is greater than Δ Tt1, keeping the number of the started 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, keeping the number of the started air-cooled cold and hot water units unchanged;
and when the second temperature difference value is larger than T2 and smaller than T1 and the temperature drop rate range of the water temperature is larger than or equal to delta Tt2 and smaller than or equal to delta Tt1, keeping the number of the started air-cooled cold and hot water units unchanged.
Optionally, an operation mode corresponding to the third temperature difference range set is a heating mode; any one third temperature difference range in the third temperature difference range set and any one water temperature reduction rate range in the temperature reduction rate range set both correspond to one second adjustment control information uniquely, and the second adjustment control information comprises:
when the third temperature difference is less than or equal to T5 and the temperature drop rate of the water temperature is less than or equal to delta Tt3, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the running time length of each air-cooled cold and hot water machine;
when the third temperature difference value is greater than T5 and less than T6 and the temperature drop rate of the water temperature is greater than delta Tt1, closing the air-cooled cold and hot water units at intervals of a fourth preset time length; when the temperature drop rate of the water temperature is less than delta Tt4, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the operation duration of each air-cooled cold and hot water machine;
when the third temperature difference value is greater than T7 and less than T8, controlling the air-cooled cold and hot water unit to stop at intervals of a fifth preset time length;
when the third temperature difference is greater than or equal to T8, controlling the air-cooled cold and hot water unit to stop in sequence at intervals of a sixth preset time length;
the Th is a set temperature of the heating host, the Tin is an inlet water temperature of the indoor unit, Δ Tt3 and Δ Tt4 are respectively a preset third water temperature drop rate threshold and a preset fourth water temperature drop rate threshold, T5, T6, T7 and T8 are respectively a preset fifth temperature difference threshold, a preset sixth temperature difference threshold, a seventh temperature difference threshold and an eighth temperature difference threshold, and T8> T7> T6> T5, Δ Tt4 is not more than Δ Tt3, and the sixth preset duration is less than a fifth preset duration.
Optionally, when the second temperature difference is less than or equal to T5 and the temperature drop rate of the water temperature is greater than Δ Tt3, keeping the number of the started 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, keeping the number of the started air-cooled cold and hot water units unchanged;
and when the second temperature difference value is larger than T5 and smaller than T6 and the temperature drop rate of the water temperature is larger than or equal to delta Tt4 and smaller than or equal to delta Tt3, keeping the number of the started air-cooled cold and hot water units unchanged.
In a second aspect, the present embodiment discloses an air conditioner, which includes a memory, a plurality of sets of air-cooled chiller-heater units, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor implements the operation control method steps of the air-cooled chiller-heater units when executing the computer program.
In a third aspect, the present embodiment discloses an air conditioning control apparatus, including:
the indoor temperature acquisition module is used for acquiring an indoor temperature value;
the data processing module is used for determining the initial number of the started air-cooled cold and hot water units according to a preset target indoor temperature value and the indoor temperature value;
and the control module is used for controlling the starting operation of the air-cooling cold and hot water units with the initial number.
In a fourth aspect, the present 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 method for controlling the operation of the air-cooled chiller-heater unit is implemented.
The method for controlling the operation of the air-cooled cold and hot water units has the advantages that the initial number of the air-cooled cold and hot water units is determined by presetting a first temperature difference value between a target indoor temperature value and an indoor temperature value, and the air-cooled cold and hot water units with the initial number are controlled to synchronously start a refrigeration mode or a heating mode. The embodiment controls the loading number of the air-cooled cold and hot water units at the initial stage of the air-conditioning refrigeration mode and/or the heating mode so as to achieve the actual effect of rapid refrigeration/heating, reduce the delay time of indoor temperature refrigeration or heating and improve the working efficiency of the air conditioner.
Drawings
Fig. 1 is a flowchart illustrating steps of an operation control method of an air-cooled chiller-heater unit according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a relationship between each corresponding difference range in the first difference range set and an initial number of the corresponding difference ranges in the first difference range set according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the temperature range in the extreme cooling mode in the practice of a particular application of the method of the present invention;
FIG. 4 is a flow chart illustrating the steps of controlling the air conditioner in the cooling mode or the heating mode according to an embodiment of the method of the present invention;
FIG. 5 is a schematic temperature range diagram of an extreme heating mode in the practice of a particular application of the method of the present invention;
FIG. 6 is a schematic diagram of the temperature interval in the cooling mode in a specific application of the method of the present invention;
FIG. 7 is a schematic diagram of the temperature range in the heating mode in an embodiment of the method of the present invention;
FIG. 8 is a block diagram schematically illustrating the construction of an air conditioner according to the present invention;
fig. 9 is a schematic block diagram of the structure of the air conditioning control device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude 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 an element is referred to 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. Further, "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 combinations 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 will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The inventor finds 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 cold and hot regulation of the indoor temperature is started only after the loading of each air-cooled cold and hot water unit is completed, and each module in each air-cooled cold and hot water unit is completed by loading, and needs a certain time, so that the efficiency of the cold and hot regulation of the indoor temperature in the starting time period of the air conditioning system is low, and the requirement of a user on quick cooling or quick heating of the indoor temperature cannot be met.
In order to overcome the problems in the prior art, the invention provides an operation control method of an air-cooled cold and hot water unit, which comprises the steps of acquiring the indoor temperature at the tail end of an air conditioner, determining the number of the air-cooled cold and hot water units to be started according to the difference value between the indoor temperature and a preset temperature value, and controlling the determined number of air-cooled cold and hot water units to be synchronously started and operated according to the determined number of the air-cooled cold and hot water units so as to realize the reduction of sequential loading of the air-cooled cold and hot water units.
Such as: and controlling the M air-cooled cold and hot water machines to be synchronously started and run when the difference value between the indoor temperature and the preset temperature value is within a first difference value range, controlling the M air-cooled cold and hot water machines to be synchronously started and run when the difference value between the indoor temperature and the preset temperature value is within a second difference value range, and controlling the M +1 air-cooled cold and hot water machines to be synchronously started and run when the difference value within the second difference value range is greater than the difference value within the first difference value range, so that the indoor temperature adjustment with the highest efficiency can be realized within the shortest loading time, and the waiting time of a user is reduced.
The method disclosed by the invention is explained in more detail below with reference to the drawings.
The embodiment provides an operation control method of an air-cooled cold and hot water unit, as shown in fig. 1, applied to an air conditioner including multiple air-cooled cold and hot water units, the method including:
and step S1, acquiring an indoor temperature value.
When the air conditioner receives an operation instruction for executing entering a cooling mode or executing entering a heating mode, an indoor temperature value is collected, wherein the indoor temperature value is a temperature value at the tail end of an indoor unit of the air conditioner, namely an indoor actual temperature value of an indoor side air disc or a floor heating radiator.
The embodiment is applied to a central air conditioner, collects a plurality of indoor temperature values from a plurality of rooms, and when the starting mode received by the air conditioner is a cooling mode, the maximum indoor temperature value of all the indoor temperature values after the maximum value is removed from the collected indoor temperatures of the plurality of rooms is used as the indoor temperature value.
And step S2, determining the initial number of the air-cooling cold and hot water units to be started according to the preset target indoor temperature value and the indoor temperature value.
When the indoor temperature value is collected in the step S1, determining the initial number of the air-cooled chiller-heater units to be started according to the preset target indoor temperature value and the collected indoor temperature value.
Specifically, the preset target indoor temperature value is a temperature value which is set by a user and needs to be adjusted, and the number of the air-cooled cold and hot water units which need to be started and operated synchronously is determined according to a temperature difference value between the collected indoor temperature value and the preset target indoor temperature value.
Specifically, the step of determining the initial number of the air-cooled chiller-heater units to be started according to a first temperature difference between a preset target temperature value and the indoor temperature value includes:
matching a first temperature difference value between the preset target indoor temperature value and the indoor temperature value with each difference value range in a preset first difference value range set to obtain a matched difference value range, and obtaining the initial number according to a starting initial number value corresponding to the difference value range; the first difference range set comprises a plurality of difference ranges, and each difference range uniquely corresponds to one starting initial number value.
And pre-establishing a first difference range set, wherein the first difference range set comprises a plurality of difference ranges corresponding to first temperature differences between the preset target indoor temperature value and the indoor temperature value, and each difference range corresponds to an initial number, so that after the first temperature difference is calculated, the initial number of the air-cooled cold and hot water units which need to synchronously run can be determined according to the difference range where the first temperature difference is located and the corresponding initial number.
Specifically, referring to fig. 2, the initial number of the difference ranges corresponding to the first difference range set and the initial number of the difference ranges matched with the first difference range set are as follows:
step S21, when Δ T1If the number of the air-cooled cold and hot water units is more than or equal to TN1, the initial number of the air-cooled cold and hot water units which are synchronously started is N1;
step S22, when TN2 is less than or equal to delta T1If TN1 is less than the initial number of the air-cooled cold and hot water units which are synchronously started to operate isN2；
Step S23, when TN3 is less than or equal to delta T1If the number is less than TN2, the initial number of the air-cooled cold and hot water units which are synchronously started to operate is N3;
step S24, when 0 ≦ Δ T1If the number is less than TN3, the initial number of the air-cooled cold and hot water units which are synchronously started to operate is N4;
wherein, Delta T1For the first temperature difference, N1, N2, N3, and N4 are positive integers and decrease in order, and TN1, TN2, and TN3 are positive integers and decrease in order.
In one embodiment, referring to fig. 3, if the number of the air-conditioning system air-cooling and air-heating fan sets is 4, the numbers of N1, N2, N3 and N4 are 4, 3, 2 and 1, respectively, and the numbers of TN1, TN2 and TN3 are 15, 10 and 5, respectively.
And step S3, controlling the initial number of the air-cooled cold and hot water units to start and operate.
When the numerical value of the initial number is obtained in the step, the starting operation of the air-cooled cold and hot water units of the initial number is controlled in the step, so that the best effect of the time consumption and the best refrigerating or heating efficiency can be achieved when the air-cooled cold and hot water units are started.
In one embodiment, in order to achieve better reduction of the time required for starting the air-cooled chiller-heaters, the method for controlling the starting operation of the initial number of air-cooled chiller-heaters in this step is as follows: and controlling the synchronous starting operation of the air-cooled cold and hot water units with the initial number.
Further, in this embodiment, the control mode corresponding to the steps from the step S1 to the step S3 is used as the top speed cooling mode or the top speed heating mode, and after the top speed cooling mode or the top speed heating mode starts and loads the initial number of air-cooled cold and hot fans, the corresponding ordinary cooling operation and the ordinary heating mode are respectively executed, so as to achieve a better indoor temperature control effect.
Therefore, after the controlling the initial number of the air-cooled chiller-heater units to start and operate synchronously, as shown in fig. 4, the method further includes:
and step S4, calculating a second temperature difference between the inlet water temperature of the indoor unit and the preset temperature of the refrigeration host, or calculating a third temperature difference between the inlet water temperature of the indoor unit and the preset temperature of the heating host, and acquiring the temperature drop rate of the water temperature.
In this step, if the cooling mode is executed, a difference between the water inlet temperature of the indoor unit and the preset temperature of the preset cooling host is calculated to obtain a second temperature difference, or if the heating mode is executed, a difference between the water inlet temperature of the indoor unit and the preset temperature of the preset cooling host is calculated to obtain a third temperature difference, and the water temperature drop rate is obtained at the same time.
The calculation formula of the water temperature drop rate is as follows:
and Δ Tt is (Tt1-Tt2)/(t2-t1), wherein the interval between t2 and t1 is a preset time length value, Tin is the water inlet temperature of the air coil water pipe of the indoor unit, Tt2 is the water inlet average temperature at the time of t2, and Tt1 is the water inlet average temperature at the time of t 1. According to the formula, the water temperature drop rate corresponding to the preset interval time can be calculated.
Step S5, determining the adjusting control information of the air-cooled cold and hot water unit according to the second temperature difference and the water temperature drop rate or the third temperature difference and the water temperature drop rate; and the adjusting control information is the number of the air-cooled cold and hot water units which are controlled to be started or closed within the target control time.
In this step, adjusting control information of the air-cooled cold and hot water unit is determined according to the second temperature difference value and the water temperature drop rate or the third temperature difference value and the water temperature drop rate obtained in the above step, where the adjusting control information is adjusting control information of the air-cooled cold and hot water unit, and specifically is controlling the number of the air-cooled cold and hot water units to be started or closed within a target control time.
Specifically, the step of determining the adjustment control information of the air-cooled chiller-heater unit according to the second temperature difference and the water temperature drop rate, or the third temperature difference and the water temperature drop rate includes:
acquiring an average temperature value of inlet water temperature of each indoor unit, calculating a difference value of the average temperature values at preset intervals, and combining a time length value of the preset intervals to obtain a water temperature drop rate;
according to a second temperature difference range set corresponding to the second temperature difference value or a third temperature difference range set corresponding to a third temperature difference value and in combination with a temperature reduction rate range set corresponding to the water temperature reduction rate, obtaining first regulation control information of the air-cooled cold and hot water unit corresponding to the second temperature difference value and the water temperature reduction rate or second regulation control information of the air-cooled cold and hot water unit corresponding to the third temperature difference value and the water temperature reduction rate;
wherein the set of second temperature difference ranges comprises a plurality of second temperature difference ranges, the set of third temperature difference ranges comprises a plurality of third temperature difference ranges, and the set of temperature drop rate ranges comprises a plurality of water temperature drop rate ranges;
any one of the second temperature difference range set and any one of the water temperature and temperature reduction rate range set uniquely correspond to one first adjustment control information;
any one third temperature difference range in the third temperature difference range set and any one water temperature and temperature reduction rate range in the temperature reduction rate range set are uniquely corresponding to one second adjustment control information.
And pre-establishing a second temperature difference range set and a third temperature difference range set, wherein the second temperature difference range set and the third temperature difference range set respectively comprise a plurality of second temperature ranges and a plurality of third temperature difference ranges, each second temperature difference can find a corresponding second temperature range, each calculated third temperature difference can find a corresponding third temperature difference range in the third temperature difference range set, and if the second temperature difference is 4, a corresponding second temperature difference range with a range of 3-5 can be found in the second temperature difference range set. If the third temperature difference is 5, a corresponding third temperature difference range of 4-6 may be found in the second temperature difference range set.
Specifically, the operation mode corresponding to the second temperature difference range set is a refrigeration mode; any one of the second temperature difference range set and any one of the water temperature and temperature drop rate range set uniquely corresponds to one first adjustment control information, and the first adjustment control information comprises:
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 dropping rate is that the water temperature dropping rate is less than or equal to Tt1, the air cooling cold and hot water units are controlled to be sequentially opened or closed according to the starting operation duration of each air cooling cold and hot water machine;
when the difference range corresponding to the second temperature difference value is that the second temperature difference value is larger than T2 and smaller than T1, and the water temperature reduction rate range is that the water temperature reduction rate is larger than delta Tt1, closing the air-cooled cold and hot water units at intervals of a first preset time length; when the temperature drop rate range of the water temperature is delta Tt < delta Tt2, the air-cooled cold and hot water units are controlled to be sequentially opened or closed according to the operation time length of each air-cooled cold and hot water machine;
when the difference range corresponding to the second temperature difference value is that the second temperature difference value is larger than T4 and smaller than T3, controlling the air-cooled cold and hot water unit to stop at intervals of a second preset time length;
when the difference range corresponding to the second temperature difference is that the second temperature difference is smaller than or equal to T4, controlling the air-cooled cold and hot water unit to stop in sequence at intervals of a third preset time length;
the method comprises the steps that Tc is set temperature of a refrigeration host machine, Tin is inlet water temperature of an indoor machine, delta Tt1 and delta Tt2 are respectively preset first water temperature drop rate threshold and second water temperature drop rate threshold, T1, T2, T3 and T4 are respectively preset first temperature difference threshold, second temperature difference threshold, third temperature difference threshold and fourth temperature difference threshold, T1> T2> T3> T4, delta Tt2 is not more than delta Tt1, and third preset duration is less than 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 drop rate range is that the water temperature drop rate is greater than Δ Tt1, the number of the started air-cooled cold and hot water units is kept 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, keeping the number of the started air-cooled cold and hot water units unchanged;
and when the difference range corresponding to the second temperature difference value is that the second temperature difference value is larger than T2 and smaller than T1, and when the water temperature reduction rate range is that the water temperature reduction rate range is larger than or equal to Δ Tt2 and smaller than or equal to Δ Tt1, keeping the number of the started air-cooled cold and hot water units unchanged.
When the control mode is the heating mode, corresponding a third temperature difference value to a difference value range in a third temperature difference value range set, where any one of a third temperature difference value range in the third temperature difference value range set and any one of the water temperature drop rate range in the temperature drop rate range set both uniquely correspond to one second adjustment control information, specifically including:
when the difference range corresponding to the third temperature difference is that the third temperature difference is smaller than or equal to T5, and the water temperature drop rate range is that the water temperature drop rate is smaller than or equal to delta Tt3, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the running time of each air-cooled cold and hot water machine;
when the difference range corresponding to the third temperature difference is that the third temperature difference is larger than T5 and smaller than T6, and the temperature drop rate of the water temperature is larger than delta Tt3, closing the air-cooled cold and hot water units at intervals of a fourth preset time length; when the water temperature drop rate range is that the water temperature drop rate is smaller than delta Tt4, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the operation duration of each air-cooled cold and hot water machine;
when the difference range corresponding to the third temperature difference is that the third temperature difference is larger than T7 and smaller than T8, controlling the air-cooled cold and hot water unit to stop at intervals of a fifth preset time length;
when the difference range corresponding to the second temperature difference is that the third temperature difference is greater than or equal to T8, controlling the air-cooled cold and hot water unit to stop in sequence at intervals of a sixth preset time length;
the Th is a set temperature of the heating host, the Tin is an inlet water temperature of the indoor unit, Δ Tt3 and Δ Tt4 are respectively a preset third water temperature drop rate threshold and a preset fourth water temperature drop rate threshold, T5, T6, T7 and T8 are respectively a preset fifth temperature difference threshold, a preset sixth temperature difference threshold, a seventh temperature difference threshold and an eighth temperature difference threshold, and T8> T7> T6> T5, Δ Tt4 is not more than Δ Tt3, and the sixth preset duration is less than a 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 drop rate range is that the water temperature drop rate is greater than Δ Tt3, the number of the started air-cooled cold and hot water units is kept unchanged;
when the difference range 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, keeping the number of the started air-cooled cold and hot water units unchanged;
and when the difference range corresponding to the second temperature difference value is that the second temperature difference value is larger than T5 and smaller than T6, and when the water temperature reduction rate range is that the water temperature reduction rate is larger than or equal to Δ Tt4 and smaller than or equal to Δ Tt3, keeping the number of the started air-cooled cold and hot water units unchanged.
And step S6, controlling the air-cooled cold and hot water unit to operate according to the adjusting control information.
And after the adjustment control information is obtained, controlling the number of the air-cooled cold and hot water units to be started or closed according to the target control time corresponding to the adjustment control information, and controlling the operation of the air-cooled cold and hot water units so as to realize the refrigeration control and the heating control of the air conditioner, wherein if the air-cooled cold and hot water units enter a refrigeration or heating mode, the step S6 is executed until the air-cooled cold and hot water units exit the refrigeration mode or the heating mode.
Specifically, the method provided by the embodiment of the present invention is further described in more detail below with reference to fig. 3 to 7.
When the air-cooled cold and hot water unit is initially started and operated, the extremely-fast cooling mode-cooling mode and the extremely-fast heating mode-heating mode can be respectively entered for example according to the condition that the received control instruction corresponds to the cooling mode or the heating mode.
3.1 extreme speed refrigeration mode
As shown in fig. 3, the extreme cooling mode includes the following steps:
a) if Δ T1When the temperature is more than or equal to 15 ℃, 4 machine sets are simultaneously loaded and operated;
b) if 10. ltoreq. DELTA.T1When the temperature is lower than 15 ℃, 3 machine sets are simultaneously loaded and operated;
c) if 5. ltoreq. DELTA.T1When the temperature is less than 10 ℃, 2 machine sets are simultaneously loaded and operated;
d) if 0. ltoreq. DELTA.T1When the temperature is less than 5 ℃, 1 unit is loaded and operated;
further: and after the initial loading operation, recovering the normal loading and unloading control in the refrigeration mode.
3.2 refrigeration mode:
as shown in connection with fig. 5, the cooling mode includes the following steps:
a) when Tin is more than or equal to Tc + 4: tc: set temperature of the refrigeration host, Th: setting the temperature of a heating host; and Tin: temperature of inlet water
1) When the water temperature drop rate delta Tt is less than or equal to 0.5, each module controls the air-cooled cold and hot water unit to be sequentially opened or closed according to the principle of early operation, early shutdown and late operation and late shutdown;
2) and when the temperature drop rate delta Tt of the water temperature is larger than 0.5, keeping the number of the opened modules unchanged.
b) When Tc +4> Tin > Tc + 1:
1) when the delta Tt is larger than 0.5, the modules are closed in sequence every 5 min;
2) when the delta Tt is more than or equal to 0.2 and less than or equal to 0.5, the number of the opened modules is kept unchanged;
3) and when the delta Tt is less than 0.2, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the principle of early operation, early shutdown and late operation and late shutdown.
c) When Tc-1 is more than or equal to Tin and more than or equal to Tc +1, the number of the modules is kept as it is;
d) stopping at intervals of 5 minutes when Tc-2.5< Tin < Tc-1, and still keeping each module to be in six-stop three-start state;
e) when Tin is less than or equal to Tc-2.5, the modules are stopped in an emergency mode in sequence at intervals of 2 minutes, and all the modules are still started, stopped and stopped for three.
3.3 extremely fast heating mode
As shown in fig. 6, the steps include the following:
the room T is the minimum room temperature (excluding the elimination room) after the minimum value is removed from all the room temperatures; the set temperature is a set temperature value corresponding to the tail end of the selected room temperature, and if the room temperatures at the two tail ends are the same, the maximum difference value of the delta T2 is the set temperature;
when the unit is initially started up:
a) if Δ T1When the temperature is more than or equal to 25 ℃, 4 machine sets are simultaneously loaded and operated;
b) if 18. ltoreq. DELTA.T1When the temperature is lower than 25 ℃, 3 machine sets are simultaneously loaded and operated;
c) if 10. ltoreq. DELTA.T1When the temperature is less than 18 ℃, 2 units are simultaneously loaded and operated;
d) if 0. ltoreq. DELTA.T1When the temperature is less than 10 ℃, 1 unit is loaded and operated;
further, after the initial loading operation, the normal load increasing and reducing control of the heating mode is recovered;
3.4 heating mode, shown in connection with fig. 7, comprising the following steps:
a) when Tin is less than or equal to Th-4:
1) when the temperature rise rate delta Tt of the water temperature is less than or equal to 0.5, controlling the air-cooled cold and hot water unit to be sequentially started or closed according to the principle of early operation, early shutdown and late operation and late shutdown (ts leaves the factory default for 1 minute);
2) when the temperature rise rate delta Tt of the water temperature is larger than 0.5, keeping the number of the started compressors unchanged;
b) when Th-1 > Tin > Th-4:
1) when the delta Tt is more than 0.5, the compressors are closed every 5 min;
2) when the delta Tt is more than or equal to 0.2 and less than or equal to 0.5, the number of the started compressors is kept unchanged;
3) and when the delta Tt is less than 0.2, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the principle of early operation, early shutdown and late operation and late shutdown.
c) When Th-1 is more than or equal to Tin and less than or equal to Th +1, the number of the air-cooled cold and hot water units is kept as it is;
d) when Th +1 is more than and Tin is more than and less than Th +2.5, stopping at intervals of 5 minutes, and starting each air-cooled cold and hot water unit only after stopping for at least 3 minutes each time (the principle of six-start and three-stop);
e) when Tin is larger than or equal to Th +2.5, the compressors are sequentially and emergently stopped according to the time interval of 2 minutes, each compressor still operates for 6min to stop when being started every time, and the compressors are started when being stopped for 3min when being stopped every time (the principle of starting six and stopping three).
Further, when loading occurs during the cooling/heating mode operation, the frequency of the compressor, which is currently in operation, is not less than 85% (plus load percentage) of the respective maximum frequency allowed.
In a second aspect, this embodiment discloses an air conditioner, as shown in fig. 8, including a memory, a plurality of sets of air-cooled chiller-heater units, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the operation control method for the air-cooled chiller-heater units when executing the computer program.
Specifically, as shown in fig. 8, the air conditioner includes at least one processor (processor)20 and a memory (memory)22, and may further include an air-cooled chiller-heater unit 21, a communication Interface (Communications Interface)23 and a bus 24. The processor 20, the air-cooled chiller-heater unit 21, the memory 22 and the communication interface 23 can communicate with each other through the bus 24. The air-cooled chiller/heater unit 21 is configured to display a user guidance interface preset in the initial setting mode. The communication interface 23 may transmit information. The processor 20 may invoke logic instructions in the memory 22 to perform the steps of the method for controlling the operation of the air-cooled chiller/heater units in the above-described embodiment.
Furthermore, the logic instructions in the memory 22 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.
The memory 22, which is a computer-readable storage medium, may be configured to store a software program, a computer-executable program, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 30 executes the functional application and data processing, i.e. implements the method in the above-described embodiments, by executing the software program, instructions or modules stored in the memory 22.
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. Further, the memory 22 may include a high speed random access memory and may also include a non-volatile memory. For example, a variety of media that can store program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, may also be transient storage media.
In a third aspect, the present embodiment discloses an air conditioning control apparatus, as shown in fig. 9, including:
an indoor temperature obtaining module 100, configured to obtain an indoor temperature value; the function of which is as described in step S1.
The data processing module 200 is used for determining the initial number of the started air-cooling cold and hot water units according to a preset target indoor temperature value and the indoor temperature value; its function is as described in step S2
And a control module 300, configured to control the initial number of air-cooled chiller-heater units to start operation, where the function of the control module is as described in step S3.
On the other hand, on the basis of the control method, the embodiment further provides a computer-readable storage medium, where the computer-readable storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement the steps of the operation control method for the air-cooled chiller-heater unit.
The invention provides an operation control method of an air-cooled cold and hot water unit, which determines the initial number of the air-cooled cold and hot water units to be started through a first temperature difference value between a preset target indoor temperature value and an indoor temperature value, and controls the air-cooled cold and hot water units with the initial number to start a refrigeration mode or a heating mode. The embodiment controls the loading number of the air-cooled cold and hot water units at the initial stage of the air-conditioning refrigeration mode and/or the heating mode so as to achieve the actual effect of rapid refrigeration/heating, reduce the delay time of indoor temperature refrigeration or heating and improve the working efficiency of the air conditioner.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (11)
1. An operation control method of an air-cooled cold and hot water unit is characterized by being applied to an air conditioner comprising a plurality of groups of air-cooled cold and hot water units, and the method comprises the following steps:
acquiring an indoor temperature value;
determining the initial number of the air-cooled cold and hot water units to be started according to a preset target indoor temperature value and the indoor temperature value;
controlling the starting operation of the air-cooled cold and hot water units with the initial number;
the control of the initial number includes after the air-cooled cold and hot water unit is started and operated:
calculating the difference value between the water inlet temperature of the indoor unit and the preset temperature of the preset refrigeration host to obtain a second temperature difference value, or calculating the difference value between the water inlet temperature of the indoor unit and the preset temperature of the preset heating host to obtain a third temperature difference value, and acquiring the temperature drop rate of the water temperature;
determining the adjusting control information of the air-cooled cold and hot water unit according to the second temperature difference and the water temperature drop rate or the third temperature difference and the water temperature drop rate; the adjusting control information comprises the number of the air-cooled cold and hot water units which are controlled to be started or closed within target control time;
controlling the air-cooled cold and hot water unit to operate according to the adjusting control information;
the second set of temperature difference ranges comprises a plurality of second temperature difference ranges;
the operation mode corresponding to the second temperature difference value range set is a refrigeration mode; any one of the second temperature difference range set and any one of the water temperature and temperature drop rate range set uniquely correspond to one first adjustment control information;
when the second temperature difference is greater than or equal to T1 and the temperature drop rate of the water temperature is greater than delta Tt1, keeping the number of the started 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, keeping the number of the started air-cooled cold and hot water units unchanged;
when the second temperature difference value is greater than T2 and less than T1, and the temperature drop rate range of the water temperature is greater than or equal to delta Tt2 and less than or equal to delta Tt1, keeping the number of the started air-cooled cold and hot water units unchanged;
wherein Δ Tt1 and Δ Tt2 are respectively a preset first water temperature drop rate threshold and a preset second water temperature drop rate threshold, T1, T2, T3 and T4 are respectively a preset first temperature difference threshold, a preset second temperature difference threshold, a third temperature difference threshold and a fourth temperature difference threshold, T1> T2> T3> T4, and Δ Tt2 is not more than Δ Tt 1.
2. The operation control method of the air-cooled chiller-heater unit according to claim 1, wherein the step of determining the initial number of the air-cooled chiller-heater units to be started according to the preset target temperature value and the indoor temperature value comprises:
calculating a difference value between the preset target indoor temperature value and the indoor temperature value to obtain a first temperature difference value, matching the first temperature difference value with each difference value range in a preset first difference value range to obtain a matched difference value range, and taking a starting initial number value corresponding to the difference value range as the initial number, wherein the preset first difference value range comprises a plurality of difference value ranges, and each difference value range only corresponds to one initial number; and/or
The mode for controlling the starting operation of the air-cooled cold and hot water units with the initial number is as follows: and controlling the synchronous starting operation of the air-cooled cold and hot water units with the initial number.
3. The operation control method of the air-cooled chiller-heater unit according to claim 2, wherein the initial number corresponding to each difference range in the preset first difference range is as follows:
when Δ T1If the number of the air-cooled cold and hot water units is more than or equal to TN1, the initial number of the air-cooled cold and hot water units which are synchronously started is N1;
when TN2 is less than or equal to delta T1If the number is less than TN1, the initial number of the air-cooled cold and hot water units which are synchronously started to operate is N2;
when TN3 is less than or equal to delta T1If the number is less than TN2, the initial number of the air-cooled cold and hot water units which are synchronously started to operate is N3;
when the value is more than or equal to 0 and less than or equal to delta T1If the number is less than TN3, the initial number of the air-cooled cold and hot water units which are synchronously started to operate is N4;
wherein, Delta T1For the first temperature difference, N1, N2, N3, and N4 are positive integers and decrease in order, and TN1, TN2, and TN3 are positive integers and decrease in order.
4. The operation control method of the air-cooled chiller-heater unit according to claim 3, wherein when the start mode of the air conditioner receiving is the cooling mode, the indoor temperature value is the maximum indoor temperature value among all the collected indoor temperatures of the plurality of rooms, the maximum indoor temperature value being removed; and when the starting mode received by the air conditioner is a heating mode, the indoor temperature value is the minimum indoor temperature value of all the collected indoor temperatures of the plurality of rooms after the minimum indoor temperature value is removed.
5. The operation control method of the air-cooled chiller/heater unit according to claim 1, wherein the step of determining the adjustment control information of the air-cooled chiller/heater unit according to the second temperature difference and the water temperature drop rate, or the third temperature difference and the water temperature drop rate comprises:
respectively acquiring a first water inlet temperature of each indoor unit at a first moment and a second water inlet temperature of each indoor unit at a second moment; the first time and the second time are separated by a preset interval duration;
calculating the average value of the first water inlet temperature, the average value of the second water inlet temperature and the difference value between the average values of the first water inlet temperature and the second water inlet temperature, and determining the water temperature drop rate according to the difference value and the preset interval duration;
according to a second temperature difference value range set corresponding to the second temperature difference value or a third temperature difference value range set corresponding to a third temperature difference value and in combination with a temperature reduction rate range set corresponding to the water temperature reduction rate, obtaining first regulation control information of the air-cooled cold and hot water unit corresponding to the second temperature difference value and the water temperature reduction rate or second regulation control information of the air-cooled cold and hot water unit corresponding to the third temperature difference value and the water temperature reduction rate;
wherein the set of third temperature difference ranges comprises a plurality of third temperature difference ranges and the set of temperature drop rate ranges comprises a plurality of water temperature drop rate ranges;
any one third temperature difference range in the third temperature difference range set and any one water temperature and temperature reduction rate range in the temperature reduction rate range set are uniquely corresponding to one second adjustment control information.
6. The operation control method of the air-cooled chiller-heater unit according to claim 5, wherein the operation mode corresponding to the second temperature difference range set is a cooling mode; any one of the second temperature difference range set and any one of the water temperature and temperature drop rate range set uniquely corresponds to one first adjustment control information, and the first adjustment control information comprises:
when the second temperature difference is greater than or equal to T1 and the temperature drop rate of the water temperature is less than or equal to Tt1, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the starting operation duration of each air-cooled cold and hot water machine;
when the second temperature difference value is greater than T2 and less than T1 and the temperature drop rate of the water temperature is greater than delta Tt1, closing the air-cooled cold and hot water units at intervals of a first preset time length; or when the temperature drop rate of the water temperature is less than delta Tt2, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the operation duration of each air-cooled cold and hot water machine;
when the second temperature difference value is larger than T4 and smaller than T3, the air-cooled cold and hot water unit is controlled to stop at intervals of a second preset time length;
when the second temperature difference is smaller than or equal to T4, controlling the air-cooled cold and hot water unit to stop in sequence at intervals of a third preset time length;
the temperature control device comprises a temperature control unit, a temperature control unit and a control unit, wherein Δ Tt1 and Δ Tt2 are respectively a preset first water temperature drop rate threshold and a preset second water temperature drop rate threshold, T1, T2, T3 and T4 are respectively a preset first temperature difference threshold, a preset second temperature difference threshold, a third temperature difference threshold and a fourth temperature difference threshold, T1> T2> T3> T4, Δ Tt2 is not more than Δ Tt1, and the third preset duration is less than the second preset duration.
7. The operation control method of the air-cooled chiller-heater unit according to claim 5, wherein the operation mode corresponding to the third temperature difference range set is a heating mode; any one third temperature difference range in the third temperature difference range set and any one water temperature reduction rate range in the temperature reduction rate range set both correspond to one second adjustment control information uniquely, and the second adjustment control information comprises:
when the third temperature difference is less than or equal to T5 and the temperature drop rate of the water temperature is less than or equal to delta Tt3, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the running time length of each air-cooled cold and hot water machine;
when the third temperature difference value is greater than T5 and less than T6 and the temperature drop rate of the water temperature is greater than delta Tt3, closing the air-cooled cold and hot water units at intervals of a fourth preset time length; when the temperature drop rate of the water temperature is less than delta Tt4, controlling the air-cooled cold and hot water units to be sequentially opened or closed according to the operation duration of each air-cooled cold and hot water machine;
when the third temperature difference value is greater than T7 and less than T8, controlling the air-cooled cold and hot water unit to stop at intervals of a fifth preset time length;
when the third temperature difference is greater than or equal to T8, controlling the air-cooled cold and hot water unit to stop in sequence at intervals of a sixth preset time length;
the temperature control device comprises a temperature control unit, a temperature control unit and a control unit, wherein Δ Tt3 and Δ Tt4 are respectively a preset third water temperature drop rate threshold and a preset fourth water temperature drop rate threshold, T5, T6, T7 and T8 are respectively a preset fifth temperature difference threshold, a preset sixth temperature difference threshold, a seventh temperature difference threshold and an eighth temperature difference threshold, T8> T7> T6> T5, Δ Tt4 is not more than Δ Tt3, and the sixth preset duration is less than a fifth preset duration.
8. The operation control method of the air-cooled chiller-heater unit according to claim 7, wherein the operation mode corresponding to the third temperature difference range set is a heating mode; any one third temperature difference range in the third temperature difference range set and any one water temperature reduction rate range in the temperature reduction rate range set both correspond to one second adjustment control information uniquely, and the second adjustment control information comprises:
when the second temperature difference is less than or equal to T5 and the temperature drop rate of the water temperature is greater than delta Tt3, keeping the number of the started 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, keeping the number of the started air-cooled cold and hot water units unchanged;
when the second temperature difference value is greater than T5 and less than T6, and the temperature drop rate of the water temperature is greater than or equal to delta Tt4 and less than or equal to delta Tt3, keeping the number of the started air-cooled cold and hot water units unchanged;
the temperature control device comprises a temperature control unit, a temperature control unit and a control unit, wherein Δ Tt3 and Δ Tt4 are respectively a preset third water temperature drop rate threshold and a preset fourth water temperature drop rate threshold, T5, T6, T7 and T8 are respectively a preset fifth temperature difference threshold, a preset sixth temperature difference threshold, a seventh temperature difference threshold and an eighth temperature difference threshold, T8> T7> T6> T5, Δ Tt4 is not more than Δ Tt3, and the sixth preset duration is less than a fifth preset duration.
9. An air conditioner comprising a memory, a plurality of air cooled chiller/heater units, a processor and a computer program stored in said memory and executable on said processor, said processor when executing said computer program performing the method steps of any of claims 1-8.
10. An air conditioning control device, characterized by comprising:
the indoor temperature acquisition module is used for acquiring an indoor temperature value;
the data processing module is used for determining the initial number of the started air-cooled cold and hot water units according to a preset target indoor temperature value and the indoor temperature value;
the control module is used for controlling the starting operation of the air-cooled cold and hot water units with the initial number;
the control of the initial number includes after the air-cooled cold and hot water unit is started and operated:
calculating the difference value between the water inlet temperature of the indoor unit and the preset temperature of the preset refrigeration host to obtain a second temperature difference value, or calculating the difference value between the water inlet temperature of the indoor unit and the preset temperature of the preset heating host to obtain a third temperature difference value, and acquiring the temperature drop rate of the water temperature;
determining the adjusting control information of the air-cooled cold and hot water unit according to the second temperature difference and the water temperature drop rate or the third temperature difference and the water temperature drop rate; the adjusting control information comprises the number of the air-cooled cold and hot water units which are controlled to be started or closed within target control time;
controlling the air-cooled cold and hot water unit to operate according to the adjusting control information;
the second set of temperature difference ranges comprises a plurality of second temperature difference ranges;
the operation mode corresponding to the second temperature difference value range set is a refrigeration mode; any one of the second temperature difference range set and any one of the water temperature and temperature drop rate range set uniquely correspond to one first adjustment control information;
when the second temperature difference is greater than or equal to T1 and the temperature drop rate of the water temperature is greater than delta Tt1, keeping the number of the started 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, keeping the number of the started air-cooled cold and hot water units unchanged;
when the second temperature difference value is greater than T2 and less than T1, and the temperature drop rate range of the water temperature is greater than or equal to delta Tt2 and less than or equal to delta Tt1, keeping the number of the started air-cooled cold and hot water units unchanged;
wherein Δ Tt1 and Δ Tt2 are respectively a preset first water temperature drop rate threshold and a preset second water temperature drop rate threshold, T1, T2, T3 and T4 are respectively a preset first temperature difference threshold, a preset second temperature difference threshold, a third temperature difference threshold and a fourth temperature difference threshold, T1> T2> T3> T4, and Δ Tt2 is not more than Δ Tt 1.
11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method for controlling the operation of an air-cooled chiller/heater unit according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038860.6A CN112178860B (en) | 2020-09-28 | 2020-09-28 | Operation control method of air-cooled cold and hot water unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038860.6A CN112178860B (en) | 2020-09-28 | 2020-09-28 | Operation control method of air-cooled cold and hot water unit and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN112178860A CN112178860A (en) | 2021-01-05 |
| CN112178860B true CN112178860B (en) | 2022-05-03 |
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| CN113342084B (en) * | 2021-06-15 | 2023-10-31 | 深圳市欧瑞博科技股份有限公司 | Intelligent control method and device of temperature control equipment, electronic equipment and storage medium |
| CN114484758A (en) * | 2022-03-21 | 2022-05-13 | 珠海格力电器股份有限公司 | Control method of multi-split air conditioner, air conditioner and computer readable storage medium |
| CN115223774B (en) * | 2022-06-13 | 2023-08-29 | 广东科源电气股份有限公司 | State monitoring device for dry-type transformer and control method thereof |
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