A control method, device and equipment of a four-pipe air conditioning system and a storage medium

Abstract

The application discloses a control method, device and equipment of a four-pipe air conditioning system and a storage medium, the four-pipe air conditioning system comprising a plurality of compressor units, the control method of the four-pipe air conditioning system comprising: obtaining a to-be-run mode of the four-pipe air conditioning system; obtaining refrigeration demand and heating demand of the four-pipe air conditioning system according to the to-be-run mode; obtaining heat recovery demand of the four-pipe air conditioning system according to the refrigeration demand and the heating demand; obtaining operation distribution information of the compressor units according to the refrigeration demand, the heating demand and the heat recovery demand; and starting the operation mode of the compressor units according to the operation distribution information. The working mode of the four-pipe air conditioning system is reasonably distributed, the stability of water temperature is ensured, and energy consumption is saved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning system technology, and in particular to a control method, device, equipment and storage medium for a four-pipe air conditioning system. Background Technology

[0002] With economic and technological development and the continuous improvement of people's living standards, the requirements for air conditioning systems in various applications are also increasing. Four-pipe modular units are widely used in applications requiring high precision and constant temperature and humidity control. Therefore, they need to meet the widest possible range of chilled and hot water output regulation. Consequently, each compressor system in the four-pipe modular unit needs to operate in different working modes according to demand to avoid wasting heat or cooling capacity. Summary of the Invention

[0003] This invention provides a control method, device, equipment, and storage medium for a four-pipe air conditioning system, which rationally allocates the operating mode of the four-pipe air conditioning system, improves the stability of water temperature, and saves energy.

[0004] According to one aspect of the present invention, a control method for a four-pipe air conditioning system is provided, the four-pipe air conditioning system comprising multiple compressor units, the control method for the four-pipe air conditioning system comprising:

[0005] Obtain the standby operating mode of the four-pipe air conditioning system;

[0006] The cooling and heating requirements of the four-pipe air conditioning system are obtained according to the operating mode.

[0007] The heat recovery requirements of the four-pipe air conditioning system are obtained based on the cooling and heating requirements.

[0008] The operation allocation information of the compressor unit is obtained based on the cooling demand, the heating demand, and the heat recovery demand;

[0009] The compressor unit is activated according to the operation allocation information.

[0010] Optionally, the heat recovery requirements of the four-pipe air conditioning system are obtained based on the cooling and heating requirements, including:

[0011] Compare the cooling demand and the heating demand to determine the minimum demand between the two;

[0012] The heat recovery requirement of the four-pipe air conditioning system is obtained based on the minimum requirement, wherein the heat recovery requirement is the same as the minimum requirement.

[0013] Optionally, after obtaining the heat recovery requirement of the four-pipe air conditioning system based on the minimum requirement, the method further includes:

[0014] Obtain the demand difference between the cooling demand and the heating demand;

[0015] Based on the heat recovery requirement and the requirement difference, the heating requirement and the updated cooling requirement are obtained again;

[0016] Alternatively, the cooling demand and the updated heating demand can be obtained again based on the heat recovery demand and the demand difference.

[0017] Optionally, after starting the operating mode of the compressor unit according to the operating allocation information, the method further includes:

[0018] Obtain information on increased heating demand and unmet cooling demand;

[0019] The compressor unit whose operating mode needs to be switched is determined based on the information of increased heating demand and unmet cooling demand.

[0020] Obtain the first preset temperature difference value and the first preset duration value;

[0021] The current temperature value of the compressor unit, the target temperature value of the compressor unit, and the switching time value of the compressor unit are obtained.

[0022] The first operation conversion information is determined based on the first preset temperature difference value, the first preset duration value, the current temperature value, the target temperature value, and the conversion time value;

[0023] Obtain the second preset temperature difference value and the second preset duration value;

[0024] The second operation conversion information is determined based on the second preset temperature difference value, the second preset duration value, the current temperature value, the target temperature value, and the conversion time value;

[0025] The operating mode of the compressor unit is changed according to the first operating conversion information or the second operating conversion information.

[0026] Optionally, after changing the operating mode of the compressor unit according to the first operating conversion information or the second operating conversion information, the method further includes:

[0027] Determine whether the heating and cooling requirements are met;

[0028] If so, then the conversion is complete;

[0029] If not, the process continues to switch the operating mode of the compressor unit according to the first or second operating conversion information.

[0030] Optionally, after starting the operating mode of the compressor unit according to the operating allocation information, the method further includes:

[0031] Obtain information on increased heating demand and decreased cooling demand;

[0032] The compressor unit whose operating mode needs to be switched is determined based on the information of increased heating demand and decreased cooling demand;

[0033] Obtain the third preset temperature difference value and the third preset duration value;

[0034] The current temperature value of the compressor unit, the target temperature value of the compressor unit, and the switching time value of the compressor unit are obtained.

[0035] The third operation conversion information is determined based on the third preset temperature difference value, the third preset duration value, the current temperature value, the target temperature value, and the conversion time value;

[0036] Obtain the fourth preset temperature difference value and the fourth preset duration value;

[0037] The fourth operation conversion information is determined based on the fourth preset temperature difference value, the fourth preset duration value, the current temperature value, the target temperature value, and the conversion time value;

[0038] The operating mode of the compressor unit is changed according to the third or fourth operating conversion information.

[0039] Optionally, after changing the operating mode of the compressor unit according to the third or fourth operating conversion information, the method further includes:

[0040] Determine whether the heating and cooling requirements are met;

[0041] If so, then the conversion is complete;

[0042] If not, then continue to switch the operating mode of the compressor unit according to the third or fourth operating conversion information;

[0043] After the conversion is completed, it also includes:

[0044] The first operating time of the compressor unit in heating mode and the second operating time of the compressor unit in cooling mode are obtained.

[0045] Determine whether the first running time meets the first preset running time;

[0046] If so, the operating mode of the compressor unit is switched to heat recovery operating mode;

[0047] If not, the compressor unit will still operate in heating mode.

[0048] Determine whether the second running time meets the second preset running time;

[0049] If so, the operating mode of the compressor unit is switched to heat recovery operating mode;

[0050] If not, the compressor unit will still operate in refrigeration mode.

[0051] According to another aspect of the present invention, a control device for a four-pipe air conditioning system is provided, comprising the control method for a four-pipe air conditioning system as described in any of the preceding aspects;

[0052] The control device includes:

[0053] The standby operating mode acquisition unit is used to acquire the standby operating mode of the four-pipe air conditioning system.

[0054] A cooling and heating demand acquisition unit is used to acquire the cooling and heating demand of the four-pipe air conditioning system according to the operating mode to be operated.

[0055] A heat recovery demand acquisition unit is used to acquire the heat recovery demand of the four-pipe air conditioning system based on the cooling demand and the heating demand.

[0056] An operation allocation information acquisition unit is used to acquire the operation allocation information of the compressor unit based on the cooling demand, the heating demand, and the heat recovery demand.

[0057] The operation mode start-up unit is used to start the operation mode of the compressor unit according to the operation allocation information.

[0058] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0059] At least one processor; and

[0060] A memory communicatively connected to the at least one processor; wherein,

[0061] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method of the four-pipe air conditioning system described in any of the preceding aspects.

[0062] According to another aspect of the present invention, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium stores computer instructions for causing a processor to execute and implement the control method of the four-pipe air conditioning system described in any one of the preceding aspects.

[0063] The technical solution of this invention involves a four-pipe air conditioning system comprising multiple compressor units. The control method for the four-pipe air conditioning system includes: acquiring the standby operating mode of the four-pipe air conditioning system; acquiring the cooling and heating demands of the four-pipe air conditioning system based on the standby operating mode; acquiring the heat recovery demand of the four-pipe air conditioning system based on the cooling and heating demands; acquiring the operating allocation information of the compressor units based on the cooling, heating, and heat recovery demands; and starting the operating mode of the compressor units according to the corresponding operating allocation information. This rational allocation of the operating modes of the four-pipe air conditioning system ensures water temperature stability while saving energy.

[0064] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0065] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 A flowchart illustrating a control method for a four-pipe air conditioning system provided in an embodiment of the present invention;

[0067] Figure 2 A flowchart illustrating another control method for a four-pipe air conditioning system provided in an embodiment of the present invention;

[0068] Figure 3 A flowchart illustrating another control method for a four-pipe air conditioning system provided in an embodiment of the present invention;

[0069] Figure 4 A flowchart illustrating another control method for a four-pipe air conditioning system provided in an embodiment of the present invention;

[0070] Figure 5 A flowchart illustrating another control method for a four-pipe air conditioning system provided in an embodiment of the present invention;

[0071] Figure 6 A flowchart illustrating another control method for a four-pipe air conditioning system provided in an embodiment of the present invention;

[0072] Figure 7 A flowchart illustrating another control method for a four-pipe air conditioning system provided in an embodiment of the present invention;

[0073] Figure 8 This is a schematic diagram of the structure of a control device for a four-pipe air conditioning system provided in an embodiment of the present invention;

[0074] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0075] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0076] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0077] Figure 1 This is a flowchart illustrating a control method for a four-pipe air conditioning system according to an embodiment of the present invention. This embodiment is applicable to four-pipe air conditioning systems. The method can be executed by a control device for the four-pipe air conditioning system, which can be implemented in hardware and / or software and can be configured within the air conditioner. The four-pipe air conditioning system includes multiple compressor units, such as... Figure 1 As shown, the method includes:

[0078] S101, Obtain the standby mode of the four-pipe air conditioning system.

[0079] The standby operating mode of the four-pipe air conditioning system can be determined, which may include operating in cooling mode, operating in heating mode, or operating in both cooling and heating modes simultaneously.

[0080] S102, obtain the cooling and heating requirements of the four-pipe air conditioning system according to the operating mode.

[0081] S103 obtains the heat recovery requirements of the four-pipe air conditioning system based on cooling and heating requirements.

[0082] The cooling and heating requirements of the four-pipe air conditioning system are calculated according to the operating mode. The operating mode requires both cooling and heating simultaneously. The common requirements for cooling and heating can be met by heat recovery output. The heat recovery requirement is calculated based on the cooling and heating requirements, thereby saving energy.

[0083] S104 obtains the operation allocation information of the compressor unit based on the cooling demand, heating demand and heat recovery demand.

[0084] Specifically, based on the calculated cooling demand, heating demand, and heat recovery demand, the corresponding operation allocation information for each compressor is obtained to ensure the normal operation of the compressor unit.

[0085] S105, start the compressor unit's operating mode according to the operation allocation information.

[0086] After receiving the operation allocation information, the compressor unit starts the corresponding operation mode and operates according to the demand, reducing the number of compressor unit start-ups and shutdowns and operation mode switching, thereby ensuring the stability of water temperature.

[0087] This invention obtains the standby operating mode of a four-pipe air conditioning system, and then obtains the cooling demand, heating demand, and heat recovery demand of the system. Based on these demands, it obtains the operating allocation information for the compressor unit, and accordingly activates the compressor unit's operating mode. By rationally allocating the operating modes of the four-pipe air conditioning system, water temperature stability is ensured, and energy consumption is effectively saved by utilizing the heat recovery mode.

[0088] Optional, Figure 2 A flowchart of another control method for a four-pipe air conditioning system provided in an embodiment of the present invention is shown below. Figure 2 As shown, the method includes:

[0089] S201, Obtain the standby operating mode of the four-pipe air conditioning system.

[0090] S202, obtain the cooling and heating requirements of the four-pipe air conditioning system according to the operating mode.

[0091] S203, compare cooling demand and heating demand to determine the minimum demand of the two.

[0092] S204, obtain the heat recovery requirement of the four-pipe air conditioning system based on the minimum demand, wherein the heat recovery requirement is the same as the minimum demand.

[0093] For example, comparing the magnitude of cooling and heating demands, when the cooling demand is 80% and the heating demand is 40%, the minimum demand is the heating demand. When the minimum demand is the heating demand, some compressor units operating on cooling demand can utilize heat recovery mode. The updated demand becomes 40% for heat recovery, 40% for heating, and 40% for cooling, effectively saving power by using heat recovery mode.

[0094] S205 obtains the compressor unit's operation allocation information based on cooling demand, heating demand, and heat recovery demand.

[0095] S206, start the compressor unit's operating mode according to the operation allocation information.

[0096] This invention determines the heat recovery requirement based on the cooling and heating requirements of a four-pipe air conditioning system; then, based on the cooling, heating, and heat recovery requirements, it starts the compressor unit in the corresponding operating mode, rationally utilizing the heat recovery mode to ensure water temperature stability.

[0097] Optional, Figure 3 Another control method for a four-pipe air conditioning system provided in this embodiment of the invention, such as... Figure 3 As shown, the method includes:

[0098] S301, Obtain the standby operating mode of the four-pipe air conditioning system.

[0099] S302, obtain the cooling and heating requirements of the four-pipe air conditioning system according to the operating mode.

[0100] S303 compares cooling demand and heating demand to determine the minimum demand of the two.

[0101] S304, obtain the heat recovery requirement of the four-pipe air conditioning system based on the minimum demand value, wherein the heat recovery requirement is the same as the minimum demand value.

[0102] S305, obtain the demand difference between cooling demand and heating demand.

[0103] In this process, the difference between cooling and heating demands for different needs is calculated to obtain the demand difference.

[0104] S306, obtain the heating demand and the updated cooling demand again based on the heat recovery demand and the demand difference; or, obtain the cooling demand and the updated heating demand again based on the heat recovery demand and the demand difference.

[0105] Specifically, if the cooling demand is greater than the heating demand, and the heating demand equals the heat recovery demand, the cooling demand is converted into a demand difference. Consequently, some compressor units shut down their cooling operation and operate in heat recovery mode. Conversely, if the heating demand is greater than the cooling demand, and the cooling demand equals the heat recovery demand, the heating demand is converted into a demand difference. Consequently, some compressor units shut down their heating operation and operate in heat recovery mode.

[0106] S307 obtains the compressor unit's operation allocation information based on cooling demand, heating demand, and heat recovery demand.

[0107] S308, the compressor unit's operating mode is activated according to the operation allocation information.

[0108] This invention calculates the demand difference based on heating and cooling demands, and then adjusts the compressor unit's operating mode accordingly based on heat recovery demands, cooling demands, and updated heating demands; or based on heat recovery demands, heating demands, and updated cooling demands, to ensure the normal operation of the four-pipe air conditioning system while saving power consumption.

[0109] Optional, Figure 4 A flowchart of another control method for a four-pipe air conditioning system provided in an embodiment of the present invention is shown below. Figure 4 As shown, the method includes:

[0110] S401, obtain the standby mode of the four-pipe air conditioning system.

[0111] S402, obtain the cooling and heating requirements of the four-pipe air conditioning system according to the operating mode.

[0112] S403 obtains the heat recovery requirements of the four-pipe air conditioning system based on cooling and heating requirements.

[0113] S404 obtains the operating allocation information of the compressor unit based on the cooling demand, heating demand, and heat recovery demand.

[0114] S405, start the compressor unit's operating mode according to the operation allocation information.

[0115] S406, obtain information on increased heating demand and unmet cooling demand.

[0116] All compressor units are in normal operation. Some compressor units operate in cooling mode alone, while others operate in heat recovery mode. When heating demand increases and cooling demand is not met, the compressor operating mode needs to be switched.

[0117] S407 is a compressor unit that determines the operating mode to be switched based on information about increased heating demand and unmet cooling demand.

[0118] Specifically, the operating mode of the compressor is determined based on information about increased heating demand and unmet cooling demand, and the operating mode of some compressors is switched to meet the heating demand.

[0119] S408, obtain the current temperature value of the compressor unit, the target temperature value of the compressor unit, and the switching time of the compressor unit.

[0120] Specifically, the current temperature value of each compressor unit is collected by temperature sensors, and the target temperature value of the compressor unit is determined. The transition time of the compressor unit from the unit temperature value to the target temperature value is calculated, which facilitates the reasonable switching of the compressor unit's operating mode.

[0121] S409, obtain the first preset temperature difference value and the first preset duration value.

[0122] S410, determine the first operation conversion information based on the first preset temperature difference value, the first preset duration value, the current temperature value, the target temperature value, and the conversion time.

[0123] Specifically, the current temperature value and the target temperature value are calculated to obtain a temperature difference value. When this temperature difference value is greater than a first preset temperature difference value and the conversion time is greater than a first preset duration value, the first operational conversion information is determined. The first operational conversion information typically indicates a rapid conversion operation, i.e., stopping the cooling mode and directly converting to the heat recovery mode. The first preset temperature difference value and the first preset duration value can be selected according to actual design requirements, and this embodiment of the invention does not impose specific limitations.

[0124] S411, obtain the second preset temperature difference value and the second preset duration value.

[0125] S412, determine the second operation conversion information based on the second preset temperature difference value, the second preset duration value, the current temperature value, the target temperature value, and the conversion time.

[0126] Specifically, the current temperature value and the target temperature value are calculated to obtain a temperature difference value. When this temperature difference value is greater than a second preset temperature difference value and the conversion time is greater than a second preset duration value, the second operation conversion information is determined. The second operation conversion information is usually a normal conversion operation, which performs a gradual conversion, so that the cooling mode is gradually converted to the heat recovery mode. The second preset temperature difference value and the second preset duration value can be selected according to actual design requirements, and the embodiments of the present invention do not impose specific limitations.

[0127] S413, switch the operating mode of the compressor unit according to the first operating conversion information or the second operating conversion information.

[0128] Different conversion information is selected based on the actual operating results, thereby changing the operating mode of the compressor unit to meet the operating requirements.

[0129] This invention obtains information on increased heating demand and unmet cooling demand. By setting a first preset temperature difference value, a first preset duration value, a second preset temperature difference value, a second preset duration value, a target temperature value, and a conversion time, it obtains operational conversion information under different parameter ranges, performs compressor unit operation mode conversion, and ensures the normal operation of the four-pipe air conditioning system and water temperature requirements.

[0130] Optional, Figure 5 A flowchart of another control method for a four-pipe air conditioning system provided in an embodiment of the present invention is shown below. Figure 5 As shown, the method includes:

[0131] S501, obtain the standby mode of the four-pipe air conditioning system.

[0132] S502, obtains the cooling and heating requirements of the four-pipe air conditioning system according to the operating mode.

[0133] S503 obtains the heat recovery requirements of a four-pipe air conditioning system based on cooling and heating requirements.

[0134] S504 obtains the operation allocation information of the compressor unit based on the cooling demand, heating demand and heat recovery demand.

[0135] S505, the operating mode of the compressor unit is started according to the operation allocation information.

[0136] S506, obtain information on increased heating demand and unmet cooling demand.

[0137] S507 is a compressor unit that determines the operating mode to be switched based on information about increased heating demand and unmet cooling demand.

[0138] S508, obtains the current temperature value of the compressor unit, the target temperature value of the compressor unit, and the switching time of the compressor unit.

[0139] S509, obtain the first preset temperature difference value and the first preset duration value.

[0140] S510, determine the first operation conversion information based on the first preset temperature difference value, the first preset duration value, the current temperature value, the target temperature value, and the conversion time.

[0141] S511, obtain the second preset temperature difference value and the second preset duration value.

[0142] S512, determine the second operation conversion information based on the second preset temperature difference value, the second preset duration value, the current temperature value, the target temperature value and the conversion time.

[0143] S513, the operating mode of the compressor unit is changed according to the first operating conversion information or the second operating conversion information.

[0144] S514, determine whether the heating and cooling demands are met; if yes, proceed to step S515; if no, repeat step S513.

[0145] S515, conversion complete.

[0146] After the compressor unit completes the operation mode conversion, it is necessary to determine whether the current cooling and heating demands are met. If they are met, the compressor unit conversion is completed and it continues to operate in the current operation mode. If they are not met, the compressor unit operation mode is converted again according to the first or second operation conversion information until the demands are met.

[0147] In this embodiment of the invention, after the compressor unit switches its operating mode based on the information added according to the heating demand, it determines whether the heating and cooling demands have been met, thereby ensuring the normal operation of the four-pipe air conditioning system and the water temperature requirements.

[0148] Optional, Figure 6 A flowchart of another control method for a four-pipe air conditioning system provided in an embodiment of the present invention is shown below. Figure 6 As shown, the method includes:

[0149] S601, obtain the standby mode of the four-pipe air conditioning system.

[0150] S602, obtains the cooling and heating requirements of the four-pipe air conditioning system according to the operating mode.

[0151] S603 obtains the heat recovery requirements of a four-pipe air conditioning system based on cooling and heating requirements.

[0152] S604 obtains the operating allocation information of the compressor unit based on the cooling demand, heating demand, and heat recovery demand.

[0153] S605, the compressor unit's operating mode is activated according to the operation allocation information.

[0154] S606, obtains information on increased heating demand and decreased cooling demand.

[0155] All compressor units are in normal operation. Some compressor units operate in heating mode only, while others operate in heat recovery mode. When heating demand increases and cooling demand decreases, the compressor operating mode needs to be switched.

[0156] S607 determines the compressor unit whose operating mode needs to be switched based on information about increased heating demand and decreased cooling demand.

[0157] Specifically, the compressor's operating mode is determined based on information about increased heating demand and decreased cooling demand, and the operating mode of some compressors is switched to meet the heating demand.

[0158] S608, obtains the current temperature value of the compressor unit, the target temperature value of the compressor unit, and the switching time of the compressor unit.

[0159] S609, obtain the third preset temperature difference value and the third preset duration value.

[0160] S610, determine the third operation conversion information based on the third preset temperature difference value, the third preset duration value, the current temperature value, the target temperature value and the conversion time.

[0161] Specifically, the current temperature value and the target temperature value are calculated to obtain a temperature difference value. When this temperature difference value is greater than a third preset temperature difference value, and the conversion time is greater than a third preset duration value, then the third operational conversion information is determined. The third operational conversion information typically indicates a rapid conversion operation, i.e., stopping the heat recovery mode and directly switching to the heating mode. The third preset temperature difference value and the third preset duration value can be selected according to actual design requirements, and this embodiment of the invention does not impose specific limitations.

[0162] S611, obtain the fourth preset temperature difference value and the fourth preset duration value.

[0163] S612, determine the fourth operation conversion information based on the fourth preset temperature difference value, the fourth preset duration value, the current temperature value, the target temperature value and the conversion time.

[0164] Specifically, the current temperature value and the target temperature value are calculated to obtain a temperature difference value. When this temperature difference value is greater than a fourth preset temperature difference value, and the conversion time is greater than a fourth preset duration value, then the fourth operational conversion information is determined. The fourth operational conversion information is usually a normal conversion operation, which involves a gradual conversion, causing the heat recovery mode to gradually switch to the heating mode. The fourth preset temperature difference value and the fourth preset duration value can be selected according to actual design requirements, and this embodiment of the invention does not impose specific limitations.

[0165] S613, the operating mode of the compressor unit is changed according to the third or fourth operating conversion information.

[0166] Different conversion information is selected based on the actual operating results, thereby changing the operating mode of the compressor unit to meet the operating requirements.

[0167] This invention obtains information on increased heating demand and decreased cooling demand. By setting a third preset temperature difference value, a third preset duration value, a fourth preset temperature difference value, a fourth preset duration value, a target temperature value, and a conversion time, it obtains operational conversion information under different parameter ranges, performs compressor unit operation mode conversion, and ensures the normal operation of the four-pipe air conditioning system and water temperature requirements.

[0168] Optional, Figure 7 A flowchart of another control method for a four-pipe air conditioning system provided in an embodiment of the present invention is shown below. Figure 7 As shown, the method includes:

[0169] S701, obtain the standby mode of the four-pipe air conditioning system.

[0170] S702, obtains the cooling and heating requirements of the four-pipe air conditioning system according to the operating mode.

[0171] S703 obtains the heat recovery requirements of a four-pipe air conditioning system based on cooling and heating demands.

[0172] S704 obtains the operating allocation information of the compressor unit based on the cooling demand, heating demand and heat recovery demand.

[0173] S705, the compressor unit's operating mode is activated according to the operation allocation information.

[0174] S706, obtains information on increased heating demand and decreased cooling demand.

[0175] S707 determines the compressor unit whose operating mode needs to be switched based on information about increased heating demand and decreased cooling demand.

[0176] S708, obtains the current temperature value of the compressor unit, the target temperature value of the compressor unit, and the switching time of the compressor unit.

[0177] S709, obtain the third preset temperature difference value and the third preset duration value.

[0178] S710 determines the third operation conversion information based on the third preset temperature difference value, the third preset duration value, the current temperature value, the target temperature value, and the conversion time.

[0179] S711, obtain the fourth preset temperature difference value and the fourth preset duration value.

[0180] S712 determines the fourth operation conversion information based on the fourth preset temperature difference value, the fourth preset duration value, the current temperature value, the target temperature value, and the conversion time.

[0181] S713, the compressor unit's operating mode is switched according to the third or fourth operating conversion information.

[0182] S714, determine whether the heating and cooling demands are met; if yes, proceed to step S715; if no, repeat step S713.

[0183] S715, conversion complete.

[0184] After the compressor unit completes the operation mode conversion, it is necessary to determine whether the current cooling and heating demands are met. If they are met, the compressor unit conversion is completed and it continues to operate in the current operation mode. If they are not met, the compressor unit operation mode is converted again according to the third or fourth operation conversion information until the demands are met.

[0185] S716, obtain the first operating time of the compressor unit in heating mode and the second operating time of the compressor unit in cooling mode.

[0186] In this system, when the compressor unit switches operating modes, there are compressor units in the four-pipe air conditioning system that operate in heating mode, cooling mode, and heat recovery mode. When the compressors operating in cooling mode and heating mode meet the maximum operating time, they can switch to heat recovery mode to save power consumption.

[0187] S717, determine whether the first running time meets the first preset running time; if yes, then execute step S718; if no, then repeat step S719.

[0188] S718 switches the compressor unit's operating mode to heat recovery operating mode.

[0189] The S719 compressor unit remains in heating mode.

[0190] Specifically, it is determined whether the first operating time of the compressor unit in heating mode meets the first preset operating time, which is the maximum operating time of the compressor unit. If yes, the operating mode of the compressor unit is changed from heating mode to heat recovery mode. If no, the compressor unit continues to operate in heating mode until the first preset operating time is met, and then it is changed to heat recovery mode.

[0191] S720, determine whether the second running time meets the second preset running time; if yes, execute step S721; if no, repeat step S722.

[0192] S721 switches the compressor unit's operating mode to heat recovery operating mode.

[0193] The compressor unit of S722 remains in refrigeration mode.

[0194] Specifically, it is determined whether the second operating time of the compressor unit in the cooling operation mode meets the second preset operating time, which is the maximum operating time of the compressor unit. If yes, the operating mode of the compressor unit is changed from the cooling operation mode to the heat recovery operation mode. If no, the compressor unit continues to operate in the cooling operation mode until the second preset operating time is met, and then it is switched to the heat recovery mode.

[0195] This invention embodiment determines the operating time of the compressor unit after conversion. When the compressor unit in heating and cooling operation modes meets the preset operating time, the operation mode is switched to heat recovery mode to ensure the on-demand operation of the four-pipe air conditioning system, ensure stable water temperature, and effectively save power consumption.

[0196] Figure 8 This is a schematic diagram of the structure of a control device for a four-pipe air conditioning system provided in an embodiment of the present invention, including the control method for the four-pipe air conditioning system described in any of the above aspects, such as... Figure 8 As shown, the control device 200 of the four-pipe air conditioning system includes:

[0197] The standby mode acquisition unit 201 is used to acquire the standby mode of the four-pipe air conditioning system.

[0198] Cooling and heating demand acquisition unit 202 is used to acquire the cooling and heating demand of the four-pipe air conditioning system according to the operating mode to be operated.

[0199] The heat recovery demand acquisition unit 203 is used to acquire the heat recovery demand of the four-pipe air conditioning system based on the cooling demand and the heating demand.

[0200] The operation allocation information acquisition unit 204 is used to acquire the operation allocation information of the compressor unit according to the cooling demand, the heating demand and the heat recovery demand;

[0201] The operation mode start-up unit 205 is used to start the operation mode of the compressor unit according to the operation allocation information.

[0202] It should be noted that since the control device for the four-pipe air conditioning system provided in this embodiment includes any of the control methods for the four-pipe air conditioning system provided in the embodiments of the present invention, it has the same or corresponding beneficial effects as the control method for the four-pipe air conditioning system, and will not be elaborated here.

[0203] Figure 9 This is a schematic diagram of an electronic device provided for an embodiment of the present invention. The electronic device 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0204] like Figure 9 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0205] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0206] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the control method of a four-pipe air conditioning system.

[0207] In some embodiments, the control method for a four-pipe air conditioning system may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded into and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the control method for a four-pipe air conditioning system described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the control method for a four-pipe air conditioning system by any other suitable means (e.g., by means of firmware).

[0208] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0209] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0210] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0211] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0212] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0213] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0214] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0215] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A control method for a four-pipe air conditioning system, the four-pipe air conditioning system comprising multiple compressor units, characterized in that, The control method for the four-pipe air conditioning system includes: Obtain the standby operating mode of the four-pipe air conditioning system; The cooling and heating requirements of the four-pipe air conditioning system are obtained according to the operating mode. The heat recovery requirements of the four-pipe air conditioning system are obtained based on the cooling and heating requirements. Based on the cooling demand, the heating demand, and the heat recovery demand, the plurality of compressor units are assigned to heat recovery operation mode, cooling operation mode, and / or heating operation mode to obtain the operation allocation information of the compressor units; The compressor unit's operating mode is activated according to the operation allocation information. The heat recovery requirements of the four-pipe air conditioning system are obtained based on the cooling and heating requirements, including: Compare the cooling demand and the heating demand to determine the minimum demand between the two; The heat recovery requirement of the four-pipe air conditioning system is obtained based on the minimum requirement, wherein the heat recovery requirement is the same as the minimum requirement. After starting the compressor unit's operating mode according to the operation allocation information, the process further includes: Obtain information on increased heating demand and unmet cooling demand; The compressor unit whose operating mode needs to be switched is determined based on the information of increased heating demand and unmet cooling demand. The current temperature value of the compressor unit, the target temperature value of the compressor unit, and the switching time value of the compressor unit are obtained. Obtain the first preset temperature difference value and the first preset duration value; First operation conversion information is determined based on the first preset temperature difference value, the first preset duration value, the current temperature value, the target temperature value, and the conversion time value; wherein, the current temperature value and the target temperature value are calculated to obtain a temperature difference value, and the first operation conversion information is determined when the temperature difference value is greater than the first preset temperature difference value and the conversion time value is greater than the first preset duration value. Obtain the second preset temperature difference value and the second preset duration value; The second operation conversion information is determined based on the second preset temperature difference value, the second preset duration value, the current temperature value, the target temperature value, and the conversion time value; wherein, the difference between the current temperature value and the target temperature value is calculated to obtain a temperature difference value, and the second operation conversion information is determined when the temperature difference value is greater than the second preset temperature difference value and the conversion time value is greater than the second preset duration value. The operating mode of the compressor unit is changed according to the first operating conversion information or the second operating conversion information.

2. The control method for the four-pipe air conditioning system according to claim 1, characterized in that, After obtaining the heat recovery requirement of the four-pipe air conditioning system based on the minimum requirement, the following is also included: Obtain the demand difference between the cooling demand and the heating demand; Based on the heat recovery requirement and the requirement difference, the heating requirement and the updated cooling requirement are obtained again; Alternatively, the cooling demand and the updated heating demand can be obtained again based on the heat recovery demand and the demand difference.

3. The control method for the four-pipe air conditioning system according to claim 1, characterized in that, After converting the operating mode of the compressor unit according to the first operating conversion information or the second operating conversion information, the method further includes: Determine whether the heating and cooling requirements are met; If so, then the conversion is complete; If not, the process continues to switch the operating mode of the compressor unit according to the first or second operating conversion information.

4. The control method for the four-pipe air conditioning system according to claim 1, characterized in that, After starting the compressor unit's operating mode according to the operation allocation information, the process further includes: Obtain information on increased heating demand and decreased cooling demand; The compressor unit whose operating mode needs to be switched is determined based on the information of increased heating demand and decreased cooling demand; The current temperature value of the compressor unit, the target temperature value of the compressor unit, and the switching time value of the compressor unit are obtained. Obtain the third preset temperature difference value and the third preset duration value; The third operation conversion information is determined based on the third preset temperature difference value, the third preset duration value, the current temperature value, the target temperature value, and the conversion time value; wherein, the current temperature value and the target temperature value are calculated to obtain a temperature difference value, and the third operation conversion information is determined when the temperature difference value is greater than the third preset temperature difference value and the conversion time value is greater than the third preset duration value. Obtain the fourth preset temperature difference value and the fourth preset duration value; The fourth operation conversion information is determined based on the fourth preset temperature difference value, the fourth preset duration value, the current temperature value, the target temperature value, and the conversion time value; wherein, the current temperature value and the target temperature value are calculated by difference to obtain a temperature difference value, and the fourth operation conversion information is determined when the temperature difference value is greater than the fourth preset temperature difference value and the conversion time value is greater than the fourth preset duration value. The operating mode of the compressor unit is changed according to the third or fourth operating conversion information.

5. The control method for the four-pipe air conditioning system according to claim 4, characterized in that, After changing the operating mode of the compressor unit according to the third or fourth operating conversion information, the method further includes: Determine whether the heating and cooling requirements are met; If so, then the conversion is complete; If not, then continue to switch the operating mode of the compressor unit according to the third or fourth operating conversion information; After the conversion is completed, it also includes: The first operating time of the compressor unit in heating mode and the second operating time of the compressor unit in cooling mode are obtained. Determine whether the first running time meets the first preset running time; If so, the operating mode of the compressor unit is switched to heat recovery operating mode; If not, the compressor unit will still operate in heating mode. Determine whether the second running time meets the second preset running time; If so, the operating mode of the compressor unit is switched to heat recovery operating mode; If not, the compressor unit will still operate in refrigeration mode.

6. A control device for a four-pipe air conditioning system, characterized in that, The control method for the four-pipe air conditioning system as described in any one of claims 1-5; The control device includes: The standby operating mode acquisition unit is used to acquire the standby operating mode of the four-pipe air conditioning system. A cooling and heating demand acquisition unit is used to acquire the cooling and heating demand of the four-pipe air conditioning system according to the operating mode to be operated. A heat recovery demand acquisition unit is used to acquire the heat recovery demand of the four-pipe air conditioning system based on the cooling demand and the heating demand. An operation allocation information acquisition unit is used to acquire the operation allocation information of the compressor unit based on the cooling demand, the heating demand, and the heat recovery demand. The operation mode start-up unit is used to start the operation mode of the compressor unit according to the operation allocation information.

7. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method of the four-pipe air conditioning system according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the control method for the four-pipe air conditioning system as described in any one of claims 1-5.

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