Air conditioner control method, device, apparatus, and storage medium

Abstract

The present application relates to the technical field of air conditioners, and in particular to an air conditioner control method, device, equipment and storage medium. The present application determines the critical temperature of each air conditioner indoor unit according to the indoor and outdoor environment temperature of each air conditioner indoor unit when the air conditioner runs in the heating simultaneous start mode, quantifies the current heating demand of the air conditioner, obtains the water inlet temperature of the hydraulic module to determine the heating demand of the hydraulic module, and adjusts the running state of the air conditioner in combination with the heating demand of each air conditioner indoor unit, to preferentially meet the heating water demand of the hydraulic module and weaken the heating demand of the air conditioner indoor unit, so that the outdoor unit can run simultaneously when the air conditioner runs in the heating simultaneous start mode, and the technical problem of poor heating effect of the air conditioner when the multi-split air conditioner simultaneously runs the air conditioner indoor unit and the hydraulic module in the prior art is solved, and the user's use experience is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an air conditioner control method, device, equipment and storage medium. Background Technology

[0002] Multi-split water heaters are typically equipped with several indoor air conditioning units and one or more hydraulic modules. The indoor air conditioning units are used for room temperature regulation, while the hydraulic modules are used for hot water production. When the indoor air conditioning units are heating and the hydraulic modules are producing hot water, the hot water production effect is poor when the outdoor unit's power is limited, due to the low water temperature of the air conditioner and the indoor air conditioning units blowing cold air, or when the water temperature is high.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide an air conditioner control method, device, equipment, and storage medium, aiming to solve the technical problem of poor heating effect of multi-split air conditioners when the indoor unit and hydraulic module are running simultaneously.

[0005] To achieve the above objectives, the present invention provides an air conditioner control method, which is applied to a multi-split air conditioner. The multi-split air conditioner includes an outdoor unit, multiple indoor units, and a hydraulic module. The outdoor unit is connected to each indoor unit and the hydraulic module.

[0006] The method includes the following steps:

[0007] When the air conditioner is operating in heating mode, the indoor ambient temperature of the area where the indoor unit of the air conditioner is located, the outdoor ambient temperature of the area where the outdoor unit is located, and the inlet water temperature of the hydraulic module are obtained.

[0008] The critical temperature of each indoor air conditioner unit is determined based on the indoor ambient temperature and the outdoor ambient temperature.

[0009] The target water temperature adjustment range for each indoor air conditioning unit is determined based on the inlet water temperature and each critical temperature.

[0010] Adjust the operating status of each indoor air conditioning unit according to the target water temperature adjustment range.

[0011] Optionally, the indoor unit of the air conditioner includes a fan for controlling the air volume and a first throttling element for controlling the refrigerant flow.

[0012] The step of adjusting the operating status of the indoor unit of the air conditioner according to the target water temperature adjustment range includes:

[0013] According to the target water temperature adjustment range, reduce the opening of the first throttling element, reduce the fan speed, and / or shut down the indoor unit of the air conditioner.

[0014] Optionally, the step of reducing the opening of the first throttling element, reducing the fan speed, and / or shutting down the indoor unit of the air conditioner according to the target water temperature adjustment range includes:

[0015] When the target water temperature adjustment range is the first water temperature adjustment range, the indoor unit of the air conditioner is turned off;

[0016] When the target water temperature adjustment range is the second water temperature adjustment range, the fan speed is reduced according to the inlet water temperature, and the minimum value of the second water temperature adjustment range is greater than the maximum value of the first water temperature adjustment range.

[0017] When the target water temperature adjustment range is the third water temperature adjustment range, the current operating state of the indoor unit of the air conditioner is maintained, and the minimum value of the third water temperature adjustment range is greater than the maximum value of the second water temperature adjustment range.

[0018] When the target water temperature adjustment range is the fourth water temperature adjustment range, the opening of the first throttling element is reduced and / or the fan speed is reduced according to the inlet water temperature, and the minimum value of the fourth water temperature adjustment range is greater than the maximum value of the third water temperature adjustment range.

[0019] When the target water temperature adjustment range is the fifth water temperature adjustment range, the indoor unit of the air conditioner is turned off, and the minimum value of the fifth water temperature adjustment range is greater than the maximum value of the fourth water temperature adjustment range.

[0020] Optionally, determining the target water temperature adjustment range for each indoor air conditioning unit based on the inlet water temperature and each critical temperature includes:

[0021] Determine the target critical temperature corresponding to the target indoor unit of the air conditioner;

[0022] Multiple water temperature adjustment ranges are defined based on the target critical temperature and the preset temperature correction value;

[0023] Match the inlet water temperature with each water temperature adjustment range to determine the target water temperature adjustment range for each indoor air conditioning unit.

[0024] Optionally, after determining the target critical temperature corresponding to the target air conditioner indoor unit, the method further includes:

[0025] Determine the target critical temperature corresponding to the target indoor unit of the air conditioner;

[0026] Calculate the temperature difference between the inlet water temperature and the target critical temperature;

[0027] Compare the temperature difference value with the preset temperature correction value;

[0028] Based on the comparison results, the target water temperature adjustment range for each indoor air conditioning unit is determined.

[0029] Optionally, determining the critical temperature of each indoor air conditioner unit based on the indoor ambient temperature and the outdoor ambient temperature includes:

[0030] Determine the target indoor ambient temperature for the area described by the target air conditioning unit;

[0031] The initial critical temperature of the target air conditioner indoor unit is determined based on the target indoor ambient temperature, the outdoor ambient temperature, and a preset mapping relationship.

[0032] The initial critical temperature is corrected to obtain the critical temperature of the target air conditioner indoor unit.

[0033] Optionally, the correction of the initial critical temperature includes:

[0034] Obtain the first total energy demand of the indoor air conditioner unit in the start-up state and the second energy demand of the hydraulic module;

[0035] The target energy requirement ratio of the air conditioner is calculated based on the sum of the first energy requirement and the second energy requirement.

[0036] The initial street-facing water temperature is adjusted according to the target energy demand ratio.

[0037] Furthermore, to achieve the above objectives, the present invention also proposes an air conditioner control device, the air conditioner control device comprising:

[0038] The acquisition module is used to acquire the indoor ambient temperature of the area where the indoor unit of the air conditioner is located, the outdoor ambient temperature of the area where the outdoor unit is located, and the inlet water temperature of the hydraulic module when the air conditioner is running in heating mode.

[0039] The calculation module is used to determine the critical temperature of each indoor air conditioner unit based on the indoor ambient temperature and the outdoor ambient temperature.

[0040] The judgment module is used to determine the target water temperature adjustment range of each indoor air conditioner unit based on the inlet water temperature and each critical temperature.

[0041] The adjustment module is used to adjust the operating status of each indoor air conditioning unit according to the target water temperature adjustment range.

[0042] In addition, to achieve the above objectives, the present invention also proposes an air conditioner control device, the air conditioner control device comprising: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, the air conditioner control program being configured to implement the steps of the air conditioner control method as described above.

[0043] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing an air conditioner control program, which, when executed by a processor, implements the steps of the air conditioner control method described above.

[0044] This invention, when the air conditioner is operating in simultaneous heating mode, determines the critical temperature of each indoor unit based on the indoor and outdoor ambient temperatures, quantifies the current heating demand of the air conditioner, obtains the inlet water temperature of the hydraulic module to determine the heating demand of the hydraulic module, and adjusts the air conditioner's operation based on the heating demand of each indoor unit. Prioritizing the hot water demand of the hydraulic module and reducing the heating demand of the indoor units, this invention avoids the problem of outdoor units not being able to operate simultaneously when the air conditioner is in simultaneous heating mode. This solves the technical problem of poor heating performance in existing multi-split air conditioners when both indoor units and the hydraulic module are operating simultaneously, thus improving the user experience. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the structure of the air conditioner control device in the hardware operating environment involved in the embodiments of the present invention;

[0046] Figure 2 This is a flowchart illustrating the first embodiment of the air conditioner control method of the present invention;

[0047] Figure 3 This is a schematic diagram of a multi-split air conditioner structure according to an embodiment of the air conditioner control method of the present invention;

[0048] Figure 4 This is a flowchart illustrating the second embodiment of the air conditioner control method of the present invention;

[0049] Figure 5 This is a flowchart illustrating the third embodiment of the air conditioner control method of the present invention;

[0050] Figure 6 This is a structural block diagram of the first embodiment of the air conditioner control device of the present invention.

[0051] Explanation of icon numbers:

[0052] label name label name 1 outdoor unit 15 Throttling element 2 air conditioner indoor unit 16 pressure valve 3 Hydraulic module 31 water-side heat exchanger 11 compressor 32 water pump 12 Vapor-liquid separator 33 Manual valve 13 Four-way valve 34 Electric auxiliary heating device 14 Outdoor heat exchanger 16 pressure valve

[0053] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0055] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of an air conditioner control device in the hardware operating environment involved in the embodiments of the present invention.

[0056] like Figure 1 As shown, the air conditioner control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk storage device. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0057] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the air conditioner control device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0058] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and an air conditioner control program.

[0059] exist Figure 1 In the air conditioner control device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the air conditioner control device of the present invention can be set in the air conditioner control device. The air conditioner control device calls the air conditioner control program stored in the memory 1005 through the processor 1001 and executes the air conditioner control method provided in the embodiment of the present invention.

[0060] This invention provides an air conditioner control method, referring to... Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of an air conditioner control method according to the present invention.

[0061] In this embodiment, the air conditioner control method includes the following steps:

[0062] Step S10: When the air conditioner is running in heating mode, obtain the indoor ambient temperature of the area where the indoor unit of the air conditioner is located, the outdoor ambient temperature of the area where the outdoor unit is located, and the inlet water temperature of the hydraulic module.

[0063] It should be noted that the executing entity in this embodiment can be the air conditioner device, which has functions such as data processing, data communication, and program execution. The air conditioner device can be the controller of a multi-split air conditioner. Of course, other devices with similar functions can also be used, and this embodiment does not limit this. For ease of explanation, this embodiment uses the controller of a multi-split air conditioner as an example.

[0064] It is worth noting that the air conditioner in this embodiment refers to a multi-split air conditioner. A multi-split air conditioner is an air conditioner with an outdoor unit connected to multiple indoor units, which can simultaneously adjust parameters such as air temperature, humidity, cleanliness, and air flow rate in multiple rooms, including but not limited to cooling, heating, and fresh air circulation modes.

[0065] It should be noted that the reference Figure 3 The multi-split air conditioner in this embodiment includes an outdoor unit, indoor units, and a hydraulic module. The outdoor unit is connected to each indoor unit and the hydraulic module. The outdoor unit 1 includes a compressor 11, a vapor-liquid separator 12, a four-way valve 13, an outdoor heat exchanger 14, a throttling element 15, and a pressure valve 16. The throttling element 15 includes a main capillary tube and multiple electronic expansion valves. The number of throttling elements 15 corresponds to the sum of the number of indoor units 2 connected to the outdoor unit and the number of hydraulic modules 3 plus one, i.e., the sum of the number of main capillary tubes and the number of each branch. An electronic expansion valve is provided on each branch corresponding to each indoor unit 2 and each branch corresponding to the hydraulic module 3. In this embodiment, the adjusted opening degree of the throttling element refers to the opening degree of the electronic expansion valve. In this application, expansion tubes or throttling valves with the same or similar functions can also be used instead of electronic expansion valves. This embodiment does not impose specific limitations on this.

[0066] It is understood that in the multi-split air conditioner of this embodiment, the output end of the compressor 11 is connected to the first port of the four-way valve 13, and is connected to the pressure valve 16 (low-pressure valve) through the second port of the four-way valve 13, so as to deliver heat to the indoor unit 2 or the hydraulic module 3 for heat exchange. After heat exchange, the heat flows back to the electronic expansion valve through the pressure valve 16 (high-pressure valve), and then is delivered to the outdoor heat exchanger 14 through the main capillary tube for evaporation and heat absorption. At this time, the outdoor heat exchanger 14 is used as an evaporator. Finally, the heat flows through the third and fourth ports of the four-way valve 13 through the vapor-liquid separator 12 and back to the compressor 11 for the next heating cycle. The number of high-pressure valves is twice the number of electronic expansion valves.

[0067] In practice, when the indoor unit of a multi-split air conditioner is in heating mode, the refrigerant is compressed by the compressor to obtain high-temperature and high-pressure refrigerant. The high-temperature and high-pressure refrigerant is then transported to the indoor heat exchanger through a four-way valve for condensation and heat dissipation. After exchanging heat with the indoor environment through the indoor heat exchanger, the refrigerant becomes medium-temperature and high-pressure. Then, it passes through the electronic expansion valve and the main capillary tube mentioned above to obtain low-pressure and medium-temperature refrigerant, which is then transported to the outdoor heat exchanger for evaporation to obtain low-temperature and low-pressure refrigerant. Finally, it flows back to the compressor through the four-way valve to complete a single heating process.

[0068] Meanwhile, when the multi-split air conditioner is producing hot water, the refrigerant is compressed by the compressor to obtain high-temperature and high-pressure refrigerant. The high-temperature and high-pressure refrigerant is then transported through a four-way valve to the water-side heat exchanger in the heat exchange module for condensation and heat dissipation. The water-side heat exchanger acts as a condenser, and after exchanging heat with the water in the water circuit, the outlet water temperature is higher than the inlet water temperature, thus heating the water flowing through the water-side heat exchanger to obtain medium-temperature and high-pressure refrigerant. Then, through the electronic expansion valve and main capillary tube mentioned above, it becomes low-pressure and medium-temperature refrigerant, which is then transported to the outdoor heat exchanger for evaporation to obtain low-temperature and low-pressure refrigerant. Finally, it flows back to the compressor through the four-way valve to complete a single heating process. At the same time, the heated water flows back to the water tank through the electric auxiliary heating device and three-way valve to produce hot water. If there is any excess hot water, it can be stored in the water tank for future use.

[0069] It is understandable that the simultaneous heating mode refers to the operation of the hydraulic module and the indoor unit of the air conditioner at the same time. In this mode, due to the different operating conditions of the hydraulic module and the indoor unit, there is a large pressure difference between them. When the hydraulic module is operating in the low water temperature range, the refrigerant flows to the low-pressure hydraulic module because of its low pressure, resulting in the indoor unit of the air conditioner having no heating capacity and blowing out cold air. When the hydraulic module is operating in the high water temperature range, the refrigerant flows to the low-pressure side of the air conditioner because of its low pressure, resulting in the hydraulic module being unable to build up high pressure and having no ability to produce hot water. Therefore, the heat pump unit cannot reach the required water temperature.

[0070] It should be understood that in traditional technology, the operation of multi-split air conditioners is generally controlled by limiting the staggered operation of the indoor unit and the hydraulic module. This control scheme cannot meet the user's needs and cannot maximize the heating capacity of the outdoor unit of the multi-split air conditioner.

[0071] In this embodiment, the inlet water temperature of the hydraulic module refers to, for example, Figure 3 The water temperature in the inlet pipe shown can also be the water temperature without heat exchange through the water-side heat exchanger; the outdoor ambient temperature of the area where the outdoor unit is located can be the temperature collected by the temperature sensor or temperature sensor on the outdoor unit casing, or the temperature collected by the temperature sensor at the outdoor heat exchanger in the outdoor unit. If there are multiple outdoor heat exchangers in the outdoor unit, the average temperature collected by the temperature sensors at each outdoor heat exchanger can be taken as the outdoor ambient temperature to reduce the impact of the outdoor ambient temperature on the control scheme in this embodiment; the indoor ambient temperature of the area where the air conditioner indoor unit is in the start-up state refers to the ambient temperature inside the room where the air conditioner indoor unit with energy demand is located. It can be the temperature collected by the temperature sensor or temperature sensor on the indoor heat exchanger. The indoor ambient temperature corresponding to each air conditioner indoor unit may be different. Therefore, this embodiment can adjust the refrigerant input of each air conditioner indoor unit according to the indoor ambient temperature of each air conditioner indoor unit with energy demand.

[0072] Step S20: Determine the critical temperature of each indoor air conditioner unit based on the indoor ambient temperature and the outdoor ambient temperature.

[0073] It is worth noting that the critical temperature is used to define the adjustment range of refrigerant input for the indoor unit of the air conditioner, and to a certain extent represents the heating demand of the indoor unit. In this embodiment, the higher the indoor ambient temperature, the higher the critical temperature; the higher the outdoor ambient temperature, the higher the critical temperature, and the two do not affect each other. The critical temperature is also related to the type of multi-split air conditioner. To better illustrate the influence of indoor and outdoor ambient temperatures on the critical temperature of the indoor unit, please refer to Table 1. The indoor ambient temperature, outdoor ambient temperature, and critical temperature in Table 1 are all examples and do not represent the final values.

[0074] Table 1

[0075]

[0076] Wherein, Toutside represents the outdoor ambient temperature, Tinside represents the indoor ambient temperature, and TW-critical represents the critical temperature corresponding to different indoor or outdoor ambient temperatures. Specifically, TW-critical1 < TW-critical2 < TW-critical3 < TW-critical4 < TW-critical5, TW-critical5 < TW-critical5` < TW-critical5`` < TW-critical5``` < TW-critical5```, and the value range of TW-critical is 5-50℃. For example, TW-critical1 can be 25℃, TW-critical2 can be 27℃, TW-critical3 can be 29℃, TW-critical4 can be 31℃, and TW-critical5 can be 33℃. This embodiment does not impose specific restrictions on this.

[0077] Step S30: Determine the target water temperature adjustment range for each indoor air conditioning unit based on the inlet water temperature and each critical temperature.

[0078] It should be noted that, in this embodiment, since the multi-split air conditioner operates for both heating and hot water production simultaneously, in order to achieve better refrigerant distribution and improve the utilization rate of the outdoor unit's heating capacity, this embodiment determines the water temperature adjustment range by coordinating the inlet water temperature and the critical temperature.

[0079] Furthermore, determining the target water temperature adjustment range for each indoor air conditioning unit based on the inlet water temperature and each critical temperature includes:

[0080] Determine the target critical temperature corresponding to the target indoor unit of the air conditioner;

[0081] Multiple water temperature adjustment ranges are defined based on the target critical temperature and the preset temperature correction value;

[0082] Match the inlet water temperature with each water temperature adjustment range to determine the target water temperature adjustment range for each indoor air conditioning unit.

[0083] It is worth noting that the target air conditioner indoor unit refers to any air conditioner indoor unit that has a heating energy requirement. Since the critical temperature of each air conditioner indoor unit is positively correlated with the indoor and outdoor ambient temperatures of the air conditioner indoor unit, this embodiment obtains the target critical temperature corresponding to the target air conditioner indoor unit through Table 1 recorded above.

[0084] It is understandable that, since the difference between indoor and outdoor ambient temperatures is not large, while the inlet water temperature can be a relatively large value, there will be a large error when matching the inlet water temperature with the water temperature adjustment range. This error can be reduced by setting a preset temperature correction value. The preset temperature correction value ranges from 0 to 20°C. In this embodiment, the preset temperature correction value includes a first temperature correction value, a second temperature correction value, and a third temperature correction value. The first temperature correction value is greater than the second temperature correction value, and the second temperature correction value is greater than the third temperature correction value.

[0085] In addition, this embodiment can also determine the target water temperature adjustment range of each indoor air conditioner unit in another way. After determining the target critical temperature corresponding to the target indoor air conditioner unit, it further includes:

[0086] Calculate the temperature difference between the inlet water temperature and the target critical temperature;

[0087] Compare the temperature difference value with the preset temperature correction value;

[0088] Based on the comparison results, the target water temperature adjustment range for each indoor air conditioning unit is determined.

[0089] Understandably, by first calculating the temperature difference between the inlet water temperature and the target critical temperature, and then comparing this temperature difference with the first temperature correction value, the second temperature correction value, and the third temperature correction value, the target water temperature adjustment range of each air conditioning indoor unit is divided according to the comparison results.

[0090] Step S40: Adjust the operating status of each indoor air conditioning unit according to the target water temperature adjustment range.

[0091] It is worth noting that adjusting the operating status of the indoor unit of the air conditioner includes, but is not limited to, adjusting the opening of the first throttling element in the indoor unit or adjusting the speed of the air supply fan. The air supply fan is used to control the air volume supplied by the indoor unit of the air conditioner, and the first throttling element is used to control the refrigerant flow rate or velocity.

[0092] This embodiment determines the critical temperature of each indoor unit based on the indoor and outdoor ambient temperatures when the air conditioner is operating in simultaneous heating mode. This quantifies the current heating demand of the air conditioner. The inlet water temperature of the hydraulic module is then obtained to determine its heating demand. The air conditioner's operation is adjusted in conjunction with the heating demands of each indoor unit, prioritizing the hot water demand of the hydraulic module and reducing the heating demand of the indoor units. This avoids the problem of outdoor units not being able to operate simultaneously when the air conditioner is in simultaneous heating mode. This solves the technical problem of poor heating performance in multi-split air conditioners when both indoor units and the hydraulic module are operating simultaneously, thus improving the user experience.

[0093] refer to Figure 4 , Figure 4 This is a flowchart illustrating a second embodiment of an air conditioner control method according to the present invention.

[0094] Based on the first embodiment described above, in this embodiment, step S40 includes:

[0095] Step S401: Reduce the opening of the first throttling element, reduce the fan speed, and / or shut down the indoor unit of the air conditioner according to the target water temperature adjustment range.

[0096] It should be noted that the first throttling element refers to the device used to control the refrigerant flow between the indoor and outdoor units of the air conditioner, including but not limited to: the main capillary tube, electronic expansion valve, and expansion tube. By reducing the opening of the first throttling element, the refrigerant flow into the indoor unit of the air conditioner can be reduced, thereby reducing the heating effect of the indoor unit.

[0097] In practice, if the heating capacity of the indoor unit of the air conditioner is insufficient, it will cause the air conditioner to blow cold air, lower the indoor temperature, and affect the user's heating experience. Therefore, the indoor temperature can be prevented from dropping rapidly by reducing the fan speed and reducing the air volume.

[0098] Further, the step of reducing the opening of the first throttling element, reducing the fan speed, and / or shutting down the indoor unit of the air conditioner according to the target water temperature adjustment range includes:

[0099] When the target water temperature adjustment range is the first water temperature adjustment range, the indoor unit of the air conditioner is turned off;

[0100] When the target water temperature adjustment range is the second water temperature adjustment range, the fan speed is reduced according to the inlet water temperature, and the minimum value of the second water temperature adjustment range is greater than the maximum value of the first water temperature adjustment range.

[0101] When the target water temperature adjustment range is the third water temperature adjustment range, the current operating state of the indoor unit of the air conditioner is maintained, and the minimum value of the third water temperature adjustment range is greater than the maximum value of the second water temperature adjustment range.

[0102] When the target water temperature adjustment range is the fourth water temperature adjustment range, the opening of the first throttling element is reduced and / or the fan speed is reduced according to the inlet water temperature, and the minimum value of the fourth water temperature adjustment range is greater than the maximum value of the third water temperature adjustment range.

[0103] When the target water temperature adjustment range is the fifth water temperature adjustment range, the indoor unit of the air conditioner is turned off, and the minimum value of the fifth water temperature adjustment range is greater than the maximum value of the fourth water temperature adjustment range.

[0104] It should be noted that, as mentioned above, the first, second, third, fourth, and fifth water temperature adjustment ranges gradually increase in size. In other words, if the target water temperature adjustment range of the inlet water module in the indoor unit of the air conditioner is the first water temperature adjustment range, it means that the inlet water temperature is low, the heating demand of the water module is high, and more refrigerant will be allocated to the water module. If heating and hot water production are running simultaneously, the indoor unit of the air conditioner will blow cold air due to the lack of refrigerant. It is possible to control the indoor unit of the air conditioner to be forced into standby mode.

[0105] If the target water temperature adjustment range of the inlet water temperature of the hydraulic module in the indoor unit of the air conditioner is the second, third, or fourth water temperature adjustment range, it means that the inlet water temperature is not too low. The outdoor unit can simultaneously support the heating demand of the indoor unit and the hot water demand of the hydraulic module, and can operate for both heating and hot water production at the same time. However, in order to improve the utilization rate of the outdoor unit's heating capacity, the indoor unit can be appropriately controlled. Specifically, in the second water temperature adjustment range, the fan speed is reduced according to the inlet water temperature; in the third water temperature adjustment range, the current operating state of the indoor unit is maintained; and in the fourth water temperature adjustment range, the opening of the first throttling element and / or the fan speed is reduced according to the inlet water temperature.

[0106] If the target water temperature adjustment range of the inlet water temperature of the hydraulic module in the indoor unit of the air conditioner is the fifth water temperature adjustment range, it means that the water temperature of the hydraulic module is relatively high. It should be noted that when the water temperature is high, the heat required to maintain the water temperature is also high. In order to prevent the water temperature in the hydraulic module from dissipating too quickly and affecting the user experience, the indoor unit of the air conditioner can be controlled to standby mode. In this embodiment and the following embodiments, controlling the standby mode of the indoor unit of the air conditioner can be done by turning off the throttling element between the indoor unit and the outdoor unit of the air conditioner, thereby shutting off the pipes from which the refrigerant flows into the indoor unit of the air conditioner.

[0107] This embodiment selects different control schemes based on the target water temperature adjustment range of the inlet water temperature of the hydraulic module in the air conditioner indoor unit, so as to control the opening degree of the throttling element and the fan speed in the air conditioner indoor unit, thereby meeting the heating demand of the air conditioner and satisfying the user's experience.

[0108] refer to Figure 5 , Figure 5 This is a flowchart illustrating a third embodiment of an air conditioner control method according to the present invention.

[0109] Based on the second embodiment described above, in this embodiment, step S20 includes:

[0110] Step S201: Determine the target indoor ambient temperature of the area described by the target air conditioning unit.

[0111] It should be noted that the target air conditioner indoor unit refers to any air conditioner indoor unit that has a heating energy requirement, and the target indoor ambient temperature refers to the indoor ambient temperature corresponding to the target air conditioner indoor unit.

[0112] Step S202: Determine the initial critical temperature of the target air conditioner indoor unit based on the target indoor ambient temperature, the outdoor ambient temperature, and the preset mapping relationship.

[0113] It is understandable that for the same indoor and outdoor ambient temperatures, the corresponding critical temperatures should be the same. However, because multi-split air conditioners connect multiple indoor units simultaneously, a larger ratio between the energy demand of the indoor unit and the energy demand of the hydraulic module indicates that the heating demand of the indoor unit is higher than its hot water demand, and the hot water production capacity decreases relatively quickly, requiring a lower critical temperature. Conversely, a smaller ratio indicates that the heating demand of the indoor unit is lower than its hot water demand, and the hot water production capacity decreases relatively slowly, requiring a higher critical temperature.

[0114] Step S203: Correct the initial critical temperature to obtain the critical temperature of the target air conditioner indoor unit.

[0115] It is worth noting that the initial critical temperature is corrected by comparing the energy demand of the indoor unit of the air conditioner with the energy demand of the hydraulic module. Specifically, this involves obtaining the first total energy demand of the indoor unit of the air conditioner in the start-up state and the second energy demand of the hydraulic module; calculating the target energy demand ratio of the air conditioner based on the first total energy demand and the second energy demand; and correcting the initial street water temperature based on the target energy demand ratio.

[0116] This embodiment obtains the initial critical temperature by looking up the indoor and outdoor ambient temperatures in a table, and corrects the initial critical temperature by comparing the energy demand of the air conditioner indoor unit with the energy demand of the hydraulic module, thereby obtaining a more accurate critical temperature and improving the adjustment accuracy of the air conditioner indoor unit's operating status.

[0117] Furthermore, this embodiment of the invention also proposes a storage medium storing an air conditioner control program, which, when executed by a processor, implements the steps of the air conditioner control method described above.

[0118] Since this storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0119] Reference Figure 6 , Figure 6 This is a structural block diagram of the first embodiment of the air conditioner control device of the present invention.

[0120] like Figure 6 As shown, the air conditioner control device proposed in this embodiment of the invention includes:

[0121] The acquisition module 10 is used to acquire the indoor ambient temperature of the area where the indoor unit of the air conditioner is located, the outdoor ambient temperature of the area where the outdoor unit is located, and the inlet water temperature of the hydraulic module when the air conditioner is running in heating mode.

[0122] The calculation module 20 is used to determine the critical temperature of each indoor air conditioner unit based on the indoor ambient temperature and the outdoor ambient temperature.

[0123] The judgment module 30 is used to determine the target water temperature adjustment range of each indoor air conditioner unit based on the inlet water temperature and each critical temperature.

[0124] The adjustment module 40 is used to adjust the operating status of each indoor air conditioning unit according to the target water temperature adjustment range.

[0125] In one embodiment, the adjustment module 40 is further configured to reduce the opening of the first throttling element, reduce the fan speed, and / or shut down the indoor unit of the air conditioner according to the target water temperature adjustment range.

[0126] In one embodiment, the adjustment module 40 is further configured to: shut down the indoor unit of the air conditioner when the target water temperature adjustment range is a first water temperature adjustment range; reduce the fan speed according to the inlet water temperature when the target water temperature adjustment range is a second water temperature adjustment range, wherein the minimum value of the second water temperature adjustment range is greater than the maximum value of the first water temperature adjustment range; maintain the current operating state of the indoor unit of the air conditioner when the target water temperature adjustment range is a third water temperature adjustment range, wherein the minimum value of the third water temperature adjustment range is greater than the maximum value of the second water temperature adjustment range; reduce the opening degree of the first throttling element and / or reduce the fan speed according to the inlet water temperature when the target water temperature adjustment range is a fourth water temperature adjustment range, wherein the minimum value of the fourth water temperature adjustment range is greater than the maximum value of the third water temperature adjustment range; and shut down the indoor unit of the air conditioner when the target water temperature adjustment range is a fifth water temperature adjustment range, wherein the minimum value of the fifth water temperature adjustment range is greater than the maximum value of the fourth water temperature adjustment range.

[0127] In one embodiment, the judgment module 30 is further configured to determine the target critical temperature corresponding to the target air conditioner indoor unit; divide multiple water temperature adjustment ranges according to the target critical temperature and the preset temperature correction value; and match the inlet water temperature with each water temperature adjustment range to determine the target water temperature adjustment range in which each air conditioner indoor unit is located.

[0128] In one embodiment, the judgment module 30 is further configured to determine the target critical temperature corresponding to the target air conditioner indoor unit; calculate the temperature difference between the inlet water temperature and the target critical temperature; compare the temperature difference with a preset temperature correction value; and determine the target water temperature adjustment range of each air conditioner indoor unit based on the comparison result.

[0129] In one embodiment, the calculation module 20 is further configured to determine the target indoor ambient temperature of the area of ​​the target air conditioner indoor unit; determine the initial critical temperature of the target air conditioner indoor unit based on the target indoor ambient temperature, the outdoor ambient temperature and a preset mapping relationship; and correct the initial critical temperature to obtain the critical temperature of the target air conditioner indoor unit.

[0130] In one embodiment, the calculation module 20 is further configured to obtain the first total energy demand of the indoor unit of the air conditioner in the start-up state and the second energy demand of the hydraulic module; calculate the target energy demand ratio of the air conditioner based on the first total energy demand and the second energy demand; and correct the initial street water temperature based on the target energy demand ratio.

[0131] This embodiment determines the critical temperature of each indoor unit based on the indoor and outdoor ambient temperatures when the air conditioner is operating in simultaneous heating mode. This quantifies the current heating demand of the air conditioner. The inlet water temperature of the hydraulic module is then obtained to determine its heating demand. The air conditioner's operation is adjusted in conjunction with the heating demands of each indoor unit, prioritizing the hot water demand of the hydraulic module and reducing the heating demand of the indoor units. This avoids the problem of outdoor units not being able to operate simultaneously when the air conditioner is in simultaneous heating mode. This solves the technical problem of poor heating performance in multi-split air conditioners when both indoor units and the hydraulic module are operating simultaneously, thus improving the user experience.

[0132] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0133] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0134] In addition, for technical details not described in detail in this embodiment, please refer to the air conditioner control method provided in any embodiment of the present invention, which will not be repeated here.

[0135] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0136] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0137] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0138] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. An air conditioner control method, characterized in that, The air conditioner control method is applied to a multi-split air conditioner, which includes an outdoor unit, multiple indoor air conditioners, and a hydraulic module. The outdoor unit is connected to each indoor air conditioner and the hydraulic module. The air conditioner control method includes: When the air conditioner is operating in heating mode, the indoor ambient temperature of the area where the indoor unit of the air conditioner is located, the outdoor ambient temperature of the area where the outdoor unit is located, and the inlet water temperature of the hydraulic module are obtained. The critical temperature of each air conditioner indoor unit is determined based on the indoor ambient temperature and the outdoor ambient temperature. The critical temperature is used to divide the adjustment range of refrigerant input of the air conditioner indoor unit, indicating the heating demand of the air conditioner indoor unit. The higher the indoor ambient temperature, the higher the critical temperature; the higher the outdoor ambient temperature, the higher the critical temperature, and the two do not affect each other. The target water temperature adjustment range for each indoor air conditioning unit is determined based on the inlet water temperature and each critical temperature; and Adjust the operating status of each indoor air conditioning unit according to the target water temperature adjustment range; The step of determining the target water temperature adjustment range for each indoor air conditioning unit based on the inlet water temperature and each critical temperature includes: Determine the target critical temperature corresponding to the target indoor unit of the air conditioner; Multiple water temperature adjustment ranges are defined based on the target critical temperature and the preset temperature correction value; and Match the inlet water temperature with each water temperature adjustment range to determine the target water temperature adjustment range for each indoor air conditioning unit; The indoor unit of the air conditioner includes a fan for controlling the air volume and a first throttling element for controlling the refrigerant flow. Adjusting the operating status of each indoor unit according to the target water temperature adjustment range includes: Reduce the opening of the first throttling element, reduce the fan speed, and / or shut down the indoor unit of the air conditioner according to the target water temperature adjustment range.

2. The air conditioner control method as described in claim 1, characterized in that, The step of reducing the opening of the first throttling element, reducing the fan speed, and / or shutting down the indoor unit of the air conditioner according to the target water temperature adjustment range includes: When the target water temperature adjustment range is the first water temperature adjustment range, the indoor unit of the air conditioner is turned off; When the target water temperature adjustment range is the second water temperature adjustment range, the fan speed is reduced according to the inlet water temperature, and the minimum value of the second water temperature adjustment range is greater than the maximum value of the first water temperature adjustment range. When the target water temperature adjustment range is the third water temperature adjustment range, the current operating state of the indoor unit of the air conditioner is maintained, and the minimum value of the third water temperature adjustment range is greater than the maximum value of the second water temperature adjustment range. When the target water temperature adjustment range is the fourth water temperature adjustment range, the opening of the first throttling element is reduced and / or the fan speed is reduced according to the inlet water temperature, and the minimum value of the fourth water temperature adjustment range is greater than the maximum value of the third water temperature adjustment range; and When the target water temperature adjustment range is the fifth water temperature adjustment range, the indoor unit of the air conditioner is turned off, and the minimum value of the fifth water temperature adjustment range is greater than the maximum value of the fourth water temperature adjustment range.

3. The air conditioner control method as described in claim 1, characterized in that, After determining the target critical temperature corresponding to the target indoor unit of the air conditioner, the method further includes: Calculate the temperature difference between the inlet water temperature and the target critical temperature; Compare the temperature difference value with the preset temperature correction value; and Based on the comparison results, the target water temperature adjustment range for each indoor air conditioning unit is determined.

4. The air conditioner control method as described in claim 1, characterized in that, The step of determining the critical temperature of each indoor air conditioner unit based on the indoor ambient temperature and the outdoor ambient temperature includes: Determine the target indoor ambient temperature for the area described by the target air conditioning unit; The initial critical temperature of the target air conditioner indoor unit is determined based on the target indoor ambient temperature, the outdoor ambient temperature, and a preset mapping relationship; and The initial critical temperature is corrected to obtain the critical temperature of the target air conditioner indoor unit.

5. The air conditioner control method as described in claim 4, characterized in that, The correction of the initial critical temperature includes: Obtain the first total energy demand of the indoor air conditioner unit in the start-up state and the second energy demand of the hydraulic module; Calculate the target energy demand ratio of the air conditioner based on the first total energy demand and the second energy demand; and The initial critical water temperature is corrected based on the target energy demand ratio.

6. An air conditioner control device, characterized in that, The air conditioner control device executes the air conditioner control method according to any one of claims 1 to 5. The air conditioner control method is applied to a multi-split air conditioner. The multi-split air conditioner includes: an outdoor unit, multiple indoor units, and a hydraulic module. The outdoor unit is connected to each indoor unit and the hydraulic module. The air conditioner control device includes: The acquisition module is used to acquire the indoor ambient temperature of the area where the indoor unit of the air conditioner is located, the outdoor ambient temperature of the area where the outdoor unit is located, and the inlet water temperature of the hydraulic module when the air conditioner is running in heating mode. The calculation module is used to determine the critical temperature of each air conditioner indoor unit based on the indoor ambient temperature and the outdoor ambient temperature. The critical temperature is used to divide the adjustment range of refrigerant input of the air conditioner indoor unit, representing the heating demand of the air conditioner indoor unit. The higher the indoor ambient temperature, the higher the critical temperature; the higher the outdoor ambient temperature, the higher the critical temperature, and the two do not affect each other. The judgment module is used to determine the target water temperature adjustment range of each indoor air conditioner unit based on the inlet water temperature and each critical temperature. The adjustment module is used to adjust the operating status of each indoor air conditioning unit according to the target water temperature adjustment range; The judgment module is also used to determine the target critical temperature corresponding to the target air conditioner indoor unit; divide multiple water temperature adjustment ranges according to the target critical temperature and the preset temperature correction value; and match the inlet water temperature with each water temperature adjustment range to determine the target water temperature adjustment range in which each air conditioner indoor unit is located. The indoor unit of the air conditioner includes a fan for controlling the air volume and a first throttling element for controlling the refrigerant flow. The adjustment module is also used to reduce the opening of the first throttling element, reduce the fan speed, and / or shut down the indoor unit of the air conditioner according to the target water temperature adjustment range.

7. An air conditioner control device, characterized in that, The air conditioner control device includes: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, the air conditioner control program being configured to implement the air conditioner control method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium stores an air conditioner control program, which, when executed by a processor, implements the air conditioner control method as described in any one of claims 1 to 5.

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