Variable frequency water pump control method, device, air conditioner and computer-readable storage medium

Abstract

This application provides a variable frequency water pump control method, device, air conditioner, and computer-readable storage medium, relating to the field of air conditioning control technology. The air conditioner is equipped with a variable frequency water pump, and stores a one-to-one correspondence between multiple operating states and water flow pipeline pressure curves of the variable frequency water pump. The water flow pipeline pressure curves characterize the water flow pipeline pressure changes that minimize energy consumption under operating conditions. In energy-saving operation mode, the air conditioner determines the target water flow pipeline pressure at the current moment based on the target water flow pipeline pressure curve and the current operating time. The target water flow pipeline pressure curve is determined based on the target operating state set by the user and the corresponding relationship. Based on the actual water flow pipeline pressure at the current moment and the target water flow pipeline pressure, the variable frequency water pump is adjusted so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions, thus reducing the energy consumption of the variable frequency water pump.

Description

Technical Field

[0001] This application relates to the field of air conditioning control technology, and more specifically, to a variable frequency water pump control method, device, air conditioner, and computer-readable storage medium. Background Technology

[0002] A heat pump system is a device that moves heat from a low temperature to a high temperature. Based on the working principle of a heat pump, its heat conversion often involves a large amount of energy consumption.

[0003] Currently, air conditioners generally use a fixed control method to control the water pump in the heat pump system, which often leads to high energy consumption of the water pump. Summary of the Invention

[0004] The problem addressed in this application is how to control water pumps to reduce their energy consumption.

[0005] To address the aforementioned issues, embodiments of this application provide a variable frequency water pump control method, apparatus, air conditioner, and computer-readable storage medium.

[0006] In a first aspect, this application provides a variable frequency water pump control method applied to an air conditioner. The air conditioner is equipped with a variable frequency water pump, and the air conditioner stores a one-to-one correspondence between multiple operating states and water flow pipeline pressure curves of the variable frequency water pump. The water flow pipeline pressure curves characterize the water flow pipeline pressure change with minimal energy consumption under the specified operating state. The method includes:

[0007] In energy-saving operation mode, the target water flow pipeline pressure at the current moment is determined based on the target water flow pipeline pressure curve and the current running time; the target water flow pipeline pressure curve is determined based on the target operating state set by the user and the corresponding relationship.

[0008] The variable frequency water pump is adjusted based on the actual water flow pipeline pressure and the target water flow pipeline pressure at the current moment, so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions.

[0009] The variable frequency water pump control method provided in this application involves storing water flow pipeline pressure curves corresponding to various operating states within the air conditioner. Each curve reflects the water flow pipeline pressure change that minimizes energy consumption under the corresponding operating state. Therefore, when the air conditioner is in use, the target water flow pipeline pressure at the current moment can be determined directly based on the target water flow pipeline pressure curve, and the current actual water flow pipeline pressure can be adjusted accordingly. Through this method, the air conditioner can adjust the variable frequency water pump under different operating states based on the water flow pipeline pressure change that minimizes energy consumption under that operating state, thus reducing the energy consumption of the variable frequency water pump.

[0010] In an optional implementation, adjusting the variable frequency water pump based on the actual water flow pipeline pressure and the target water flow pipeline pressure at the current moment, so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions, includes:

[0011] Based on the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure, determine whether the actual water flow pipeline pressure meets the energy-saving conditions;

[0012] The energy-saving condition includes the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure being within a preset range;

[0013] If the actual water flow pipeline pressure does not meet the energy-saving conditions, the water flow rate of the variable frequency water pump will be adjusted so that the actual water flow pipeline pressure meets the energy-saving conditions.

[0014] The variable frequency water pump control method provided in this application allows the air conditioner to determine whether the actual water flow pipeline pressure meets energy-saving conditions based on the actual water flow pipeline pressure and the target water flow pipeline pressure. If the energy-saving conditions are not met, the water flow rate of the variable frequency water pump is adjusted to ensure that the actual water flow pipeline pressure meets the energy-saving conditions. This method can adjust the actual water flow pipeline pressure to approach the target water flow pipeline pressure, thus ensuring that the variable frequency water pump maintains a low energy consumption state during operation.

[0015] In an optional implementation, the operating state includes an operating mode, operating duration, a first indoor-outdoor ambient temperature ratio at the start-up time, and an indoor temperature at the shutdown time; the target operating state includes a target operating mode, a target operating duration, a target operating temperature, and a second indoor-outdoor ambient temperature ratio at the start-up time based on the target operating temperature; the method further includes:

[0016] In energy-saving operation mode, the system receives operation status setting instructions sent by the user and calculates the second indoor-outdoor ambient temperature ratio; the operation status setting instructions include the target operation mode, target operating duration, and target operating temperature;

[0017] The target water flow pipeline pressure curve is determined based on the target operating mode, the target operating time, the target operating temperature, the second indoor-outdoor ambient temperature ratio, and the corresponding relationship.

[0018] The variable frequency water pump control method provided in this application embodiment includes an operating state comprising an operating mode, operating duration, a first indoor-outdoor ambient temperature ratio at the start-up time, and an indoor temperature at the shutdown time. A target operating state includes a target operating mode, a target operating duration, a target operating temperature, and a second indoor-outdoor ambient temperature ratio at the start-up time based on the target operating temperature. The air conditioner can then determine the corresponding target water flow pipeline pressure curve based on the target operating state. This method allows for the determination of the target water flow pipeline pressure curve that best suits the current operating conditions and user needs.

[0019] In an optional implementation, the operating status setting instruction includes an initial operating instruction, an operating parameter modification instruction, a first mode conversion setting instruction, and a second mode conversion setting instruction; the first mode conversion setting instruction is a switching instruction between heating mode and cooling mode, and the second mode conversion setting instruction is a heating mode switching instruction.

[0020] The calculation of the second indoor-outdoor ambient temperature ratio includes:

[0021] If the running status setting instruction is an initial running instruction, then after running for a first preset time according to the initial running instruction, the indoor and outdoor ambient temperatures are obtained, and the second indoor and outdoor ambient temperature ratio is calculated.

[0022] If the running status setting instruction is a running parameter modification instruction, then upon receiving the running parameter modification instruction, the indoor and outdoor ambient temperatures are obtained, and the second indoor and outdoor ambient temperature ratio is calculated;

[0023] If the operating status setting instruction is a first mode conversion setting instruction, then the indoor and outdoor ambient temperatures are obtained after the second preset time period after the mode conversion is completed, and the second indoor and outdoor ambient temperature ratio is calculated.

[0024] If the operating status setting instruction is a second mode conversion setting instruction, then when the mode conversion is completed, the indoor and outdoor ambient temperatures are obtained, and the second indoor and outdoor ambient temperature ratio is calculated.

[0025] The variable frequency water pump control method provided in this application allows for the following adjustments: if the operating status setting command is an initial operating command, the air conditioner can calculate the second indoor-outdoor ambient temperature ratio after running for a first preset time according to the command; if the operating status setting command is an operating parameter modification command, the air conditioner can calculate the second indoor-outdoor ambient temperature ratio upon receiving the command; if the operating status setting command is a heating mode to cooling mode conversion command, the air conditioner needs to calculate the second indoor-outdoor ambient temperature ratio after the conversion is completed for a second preset time; if the operating status setting command is a heating mode conversion command, the air conditioner can calculate the second indoor-outdoor ambient temperature ratio after the mode conversion is completed. This method allows the second indoor-outdoor ambient temperature ratio to be calculated only after the water pump has stabilized, thus determining the target water flow pipeline pressure curve and ensuring subsequent operational stability.

[0026] In an optional implementation, the method further includes:

[0027] In other operating modes, the first indoor-outdoor ambient temperature ratio at the start of operation, the indoor temperature at the end of operation, the operating time, and the water flow pipeline pressure at each time within the operating time are obtained; the other operating modes are operating modes other than the energy-saving operating mode.

[0028] If the indoor temperature at the end of the operation reaches the user-set temperature, then a first water flow pipeline pressure curve is generated based on the running time and the water flow pipeline pressure at each time within the running time.

[0029] The correspondence between the operating mode, the operating time, the first indoor-outdoor ambient temperature ratio, the indoor temperature, and the pressure curve of the first water flow pipeline is saved.

[0030] The variable frequency water pump control method provided in this application allows the air conditioner to, in other operating modes, acquire the first indoor-outdoor ambient temperature ratio at the start-up time, the indoor temperature at the end-of-run time, the running time, and the corresponding water flow pipeline pressure at each moment within the running time. If the indoor temperature at the end-of-run time reaches the user-set temperature, a first water flow pipeline pressure curve is generated, and this first water flow pipeline pressure curve, along with the corresponding operating state, is saved. This method ensures that the water flow pipeline pressure curves stored in the air conditioner all meet the user's requirements under the given operating conditions.

[0031] In an optional implementation, generating a first water flow pipeline pressure curve based on the running time and the water flow pipeline pressure at each moment within the running time includes:

[0032] Determine the first running time from the start of operation to when the indoor temperature reaches the user-set temperature, and the second running time from when the indoor temperature reaches the user-set temperature until the end of operation;

[0033] Based on the water flow pipeline pressure at each moment within the first running time and the water flow pipeline pressure at each moment within the second running time, the target water flow pipeline pressure at each moment within the running time is calculated to generate a first water flow pipeline pressure curve; the first water flow pipeline pressure curve represents that the indoor temperature reaches the user-set temperature at the end of the operation.

[0034] The variable frequency water pump control method provided in this application allows the air conditioner to calculate the target water flow pressure at each time point based on the water flow pipeline pressure corresponding to the first running time from the start-up time until the indoor temperature reaches the user-set temperature, and the water flow pipeline pressure corresponding to the second running time from the indoor temperature reaching the user-set temperature until the end of operation. This ensures that the indoor temperature reaches the user-set temperature at the end of operation, thus obtaining a curve representing the water flow pipeline pressure change that minimizes energy consumption under this operating state.

[0035] In an optional implementation, before saving the correspondence between the operating mode, the operating time, the first indoor-outdoor ambient temperature ratio, and the indoor temperature, and the first water flow pipeline pressure curve, the method further includes:

[0036] Determine whether the air conditioner has stored the operating mode, the operating time, the first indoor-outdoor ambient temperature ratio, and the second water flow pipeline pressure curve corresponding to the indoor temperature;

[0037] If the second water flow pipeline pressure curve is stored, then the third water flow pipeline pressure curve is generated based on the first water flow pipeline pressure curve and the second water flow pipeline pressure curve.

[0038] The correspondence between the operating mode, the operating time, the first indoor-outdoor ambient temperature ratio, the indoor temperature, and the pressure curve of the third water flow pipeline is saved.

[0039] The variable frequency water pump control method provided in this application embodiment allows the air conditioner to determine whether a second water flow pipeline pressure curve corresponding to the operating state is already stored in the air conditioner before saving the first water flow pipeline pressure curve. If it exists, a third water flow pipeline pressure curve is generated based on the first and second water flow pipeline pressure curves, and the correspondence between the operating state and the third water flow pipeline pressure curve is saved. Therefore, the water flow pipeline pressure curves stored in the air conditioner can be continuously improved.

[0040] Secondly, this application provides a variable frequency water pump control device applied to an air conditioner. The air conditioner is equipped with a variable frequency water pump, and the air conditioner stores a one-to-one correspondence between multiple operating states and water flow pipeline pressure curves of the variable frequency water pump. The water flow pipeline pressure curves characterize the water flow pipeline pressure change with minimal energy consumption under the specified operating state. The device includes:

[0041] The determination module is used to determine the target water flow pipeline pressure at the current moment in energy-saving operation mode based on the target water flow pipeline pressure curve and the current running time; the target water flow pipeline pressure curve is determined according to the target operating state set by the user and the corresponding relationship.

[0042] The adjustment module is used to adjust the variable frequency water pump according to the actual water flow pipeline pressure and the target water flow pipeline pressure at the current moment, so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions.

[0043] The variable frequency water pump control device provided in this application embodiment determines the target water flow pipeline pressure at the current moment in energy-saving operation mode by a determining module based on the target water flow pipeline pressure curve and the current running time. The target water flow pipeline pressure curve is determined according to the user-set target operating state and the corresponding relationship. The adjusting module adjusts the variable frequency water pump based on the actual water flow pipeline pressure at the current moment and the target water flow pipeline pressure to ensure that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions. The air conditioner can adjust the variable frequency water pump according to the water flow pipeline pressure change that minimizes energy consumption under different operating states, thus reducing the energy consumption of the variable frequency water pump.

[0044] Thirdly, this application provides an air conditioner including a processor and a variable frequency water pump, wherein the processor is electrically connected to the variable frequency water pump, and the processor is used to execute a computer program to implement the method described in any of the foregoing embodiments.

[0045] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in any of the foregoing embodiments. Attached Figure Description

[0046] Figure 1 A block diagram of an air conditioner provided in an embodiment of this application;

[0047] Figure 2 A schematic flowchart of a variable frequency water pump control method provided in an embodiment of this application;

[0048] Figure 3Another flowchart illustrating the variable frequency water pump control method provided in this application embodiment;

[0049] Figure 4 A block diagram of a variable frequency water pump control device provided in an embodiment of this application;

[0050] Figure 5 This is another block diagram of the variable frequency water pump control device provided in the embodiments of this application.

[0051] Explanation of reference numerals in the attached figures:

[0052] 10-Air conditioner; 100-Outdoor unit; 110-Indoor unit; 200-Determine module; 210-Adjustment module; 220-Curve generation module. Detailed Implementation

[0053] Heat pump systems generally include air-source heat pumps and water-source heat pumps. They are devices that move heat from a lower temperature to a higher temperature, providing a comfortable living and working environment for various scenarios. However, based on the working principle of heat pumps, the heat conversion process often involves significant energy consumption. With rising electricity prices, reducing the energy consumption of heat pump systems has become a crucial issue.

[0054] Currently, air conditioners generally use a fixed control method to control the water source heat pump. That is, regardless of the user's settings, the variable frequency water pump is controlled to reach a certain outlet water temperature as soon as possible so that the air conditioner's operating temperature or the water heater's outlet water temperature can reach the user's set temperature as quickly as possible. After that, it is necessary to control the variable frequency water pump to maintain the outlet water temperature.

[0055] However, this method often has the problem of excessive water pump energy consumption. For example, if a user sets the water heater to take 30 minutes to produce hot water so that the outlet water temperature reaches 40℃, it means that the user will only need to use the water heater after 30 minutes. However, with the existing technology of controlling the variable frequency water pump, the water heater may be able to reach the outlet water temperature of 40℃ in about 10 minutes. At this time, the user's set time has not yet been reached. Therefore, the variable frequency water pump needs to maintain the outlet water temperature at 40℃ for the next 20 minutes.

[0056] It is understandable that both the high-speed operation of the variable frequency water pump to reach the user's set temperature as quickly as possible and the subsequent temperature maintenance process require a lot of energy.

[0057] Based on this, embodiments of this application provide a variable frequency water pump control method, apparatus, air conditioner, and computer-readable storage medium to solve the above-mentioned problems.

[0058] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0059] Figure 1 For a block diagram of the air conditioner 10 provided in the embodiments of this application, please refer to... Figure 1 The air conditioner 10 includes an outdoor unit 100 and an indoor unit 110.

[0060] Optionally, the indoor unit 110 is equipped with a processor and a variable frequency water pump, and the processor is electrically connected to the variable frequency water pump.

[0061] Optionally, the processor can be used to execute computer programs to implement the variable frequency water pump control method provided in the embodiments of this application.

[0062] Optionally, the variable frequency water pump can also be connected to a water heater, and the user can control the variable frequency water pump through the air conditioner to realize the cooling and heating settings of the air conditioner and the hot water setting of the water heater.

[0063] Optionally, the air conditioner may also store a one-to-one correspondence between multiple operating states and the water flow pipeline pressure curves of the variable frequency water pump.

[0064] The pressure curve of the water flow pipeline represents the pressure change of the water flow pipeline with the lowest energy consumption under this operating condition.

[0065] Understandably, the water flow pipeline pressure curve includes the water flow pipeline pressure with the lowest energy consumption at each moment under this operating condition.

[0066] Optionally, the operating status may include the operating status of the air conditioner and the operating status of the water heater.

[0067] The following is based on the above. Figure 1 The air conditioner is the implementing entity. The variable frequency water pump control method provided in this application embodiment is described executively with reference to the flowchart. Specifically, Figure 2 Please refer to the flowchart of a variable frequency water pump control method provided in the embodiments of this application. Figure 2 The method includes:

[0068] Step S20: In energy-saving operation mode, determine the target water flow pipeline pressure at the current moment based on the target water flow pipeline pressure curve and the current running time.

[0069] The target water flow pipeline pressure curve is determined based on the target operating status and corresponding relationship set by the user.

[0070] Optionally, this energy-saving operating mode can be enabled or disabled by the user.

[0071] In this embodiment, the air conditioner can determine the target water flow pipeline pressure corresponding to the target operating state based on the target operating state set by the user and the stored correspondence in the energy-saving operation mode.

[0072] Optionally, the current runtime refers to the time elapsed from the moment the air conditioner started running to the current moment.

[0073] Understandably, since the target water flow pipeline pressure curve includes the water flow pipeline pressure with the lowest energy consumption at each moment under this operating state, the target water flow pipeline pressure at the current moment can be determined by the current operating time.

[0074] Optionally, the target water flow pipeline pressure at the current moment is the water flow pipeline pressure that consumes the least energy at the current moment.

[0075] Step S21: Adjust the variable frequency water pump according to the actual water flow pipeline pressure and the target water flow pipeline pressure at the current moment, so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions.

[0076] In one possible implementation, a pressure detection device, such as a pressure sensor, can be installed on the pipeline of the variable frequency water pump. The air conditioner can then use this pressure detection device to obtain the actual water flow pipeline pressure of the variable frequency water pump at the current moment. In this embodiment, the air conditioner can determine the target water flow pipeline pressure in real time during operation, thereby adjusting the actual water flow pipeline pressure in real time so that the variable frequency water pump always operates with lower energy consumption.

[0077] The variable frequency water pump control method provided in this application involves storing water flow pipeline pressure curves corresponding to various operating states within the air conditioner. Each curve reflects the water flow pipeline pressure change that minimizes energy consumption under the corresponding operating state. Therefore, when the air conditioner is in use, the target water flow pipeline pressure at the current moment can be determined directly based on the target water flow pipeline pressure curve, and the current actual water flow pipeline pressure can be adjusted accordingly. Through this method, the air conditioner can adjust the variable frequency water pump under different operating states based on the water flow pipeline pressure change that minimizes energy consumption under that operating state, thus reducing the energy consumption of the variable frequency water pump.

[0078] Understandably, since the target water flow pipeline pressure is actually the water flow pipeline pressure with the lowest energy consumption at the current moment, it can be regarded as a standard value of the current water flow pipeline pressure. Considering that the actual water flow pipeline pressure will not be completely consistent with the target water flow pipeline pressure, if the actual water flow pipeline pressure at the current moment is close to the target water flow pipeline pressure, it can be determined that the actual water flow pipeline pressure does not need to be adjusted at this time. If the actual water flow pipeline pressure at the current moment differs significantly from the target water flow pipeline pressure, it is determined that the actual water flow pipeline pressure needs to be adjusted so that the actual water flow pipeline pressure is close to the target water flow pipeline pressure.

[0079] Based on this, an energy-saving condition can be set to determine whether the current actual water flow pipeline pressure needs adjustment. Specifically, in Figure 2 On this basis, Figure 3 For another flowchart illustrating the variable frequency pump control method provided in this application embodiment, please refer to [link / reference]. Figure 3 The above step S21 can also be achieved through the following steps:

[0080] Step S21-1: Determine whether the actual water flow pipeline pressure meets the energy-saving conditions based on the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure.

[0081] Among them, the energy-saving condition includes the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure being within a preset range.

[0082] Optionally, the preset range can be set according to actual needs, for example, the preset range can be set to (85%, 115%).

[0083] Understandably, in this embodiment, if the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure at the current moment is within a preset range, it can be determined that the actual water flow pipeline pressure meets the energy-saving conditions; if the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure at the current moment exceeds the preset range, it can be determined that the actual water flow pipeline pressure does not meet the energy-saving conditions.

[0084] Step S21-2: If the actual water flow pipeline pressure does not meet the energy-saving conditions, the water flow rate of the variable frequency water pump is adjusted so that the actual water flow pipeline pressure meets the energy-saving conditions.

[0085] Optionally, if the actual water flow pipeline pressure does not meet the energy-saving conditions, it indicates that there is a certain gap between the actual water flow pipeline pressure and the target water flow pipeline pressure. Therefore, the water flow rate of the variable frequency water pump can be adjusted so that the actual water flow pipeline pressure of the variable frequency water pump meets the energy-saving conditions.

[0086] Optionally, seasonal temperature and climate changes can affect the water flow rate of the variable frequency water pump, which in turn can affect the energy consumption of the heat pump system. Therefore, it is also necessary to determine the operating status in conjunction with the outdoor ambient temperature.

[0087] Optionally, in order to further reduce energy consumption and ensure that user settings are met, the above-mentioned operating state may include operating mode, running time, first indoor-outdoor ambient temperature ratio at the start of operation and indoor temperature at the stop of operation, and the target operating state may include target operating mode, target running time, target operating temperature and second indoor-outdoor ambient temperature ratio at the start of operation based on the target operating temperature.

[0088] Optionally, the operating mode may include a heating mode and a cooling mode; the operating duration refers to the duration for which the air conditioner is set to run by the user.

[0089] Optionally, the operating status may also include the operating mode, operating duration, the first indoor-outdoor ambient temperature ratio at the start of operation, and the indoor-outdoor ambient temperature ratio at the shutdown time.

[0090] In addition, it is understandable that for a water heater, the operating status may include the operating mode, operating time, the first outlet water temperature at the start of operation, and the second outlet water temperature at the stop of operation.

[0091] Optionally, the operating mode of the water heater may include a hot water production mode.

[0092] Understandably, users can set only the air conditioner to run, or only the water heater to run, or they can set both the air conditioner and the water heater to run simultaneously, for example, setting the air conditioner to heat while the water heater heats up.

[0093] Based on this, the air conditioner can receive the operating status setting command sent by the user in energy-saving operation mode and calculate the second indoor-outdoor ambient temperature ratio. The operating status setting command includes the target operating mode, target operating time, and target operating temperature. The air conditioner can then determine the target water flow pipeline pressure curve based on the target operating mode, target operating time, target operating temperature, second indoor-outdoor ambient temperature ratio, and the corresponding relationship.

[0094] In this embodiment, the target operating temperature refers to the indoor temperature that the air conditioner should reach after it starts operating.

[0095] Optionally, if the operating status also includes the indoor-outdoor ambient temperature ratio at the time of operation shutdown, the air conditioner also needs to store the outdoor temperature for each time period in each season. Understandably, in this case, when determining the target water flow pipeline pressure curve, the air conditioner also needs to combine the current season, the current time, and the target operating duration to determine the outdoor ambient temperature at the end of this operation, and then calculate the indoor-outdoor ambient temperature ratio at the end of this operation based on the target operating temperature and the outdoor ambient temperature.

[0096] In addition, it is understandable that the air conditioner can also receive the operating status setting command sent by the user in the energy-saving operation mode, and determine the third outlet water temperature at the start time according to the target operating temperature. The operating status setting command includes the target operating mode, the target operating time, and the target operating temperature. The air conditioner can then determine the target water flow pipeline pressure curve based on the target operating mode, the target operating time, the target operating temperature, the third outlet water temperature, and the corresponding relationship.

[0097] Understandably, the target operating temperature refers to the outlet water temperature that the water heater should reach after it starts operating.

[0098] Optionally, there may be many operating scenarios in the energy-saving operation mode. For example, when the air conditioner is turned on and enters the energy-saving operation mode, the user can issue an operation command to make the air conditioner or water heater start running; during the operation of the air conditioner, the user may modify the operating parameters so that the air conditioner operates according to the modified operating parameters; the air conditioner is originally in cooling mode, but the user wants to turn off the cooling mode and turn on the hot water mode of the water heater at the same time, etc.

[0099] In this embodiment, the compressor operates differently under the different operating scenarios described above. For example, if the user modifies the operating parameters during the operation of the air conditioner so that the air conditioner operates according to the modified operating parameters, the compressor can maintain normal operation. However, if the user wants to turn off the cooling mode and turn on the hot water mode of the water heater at the same time, the compressor needs to be turned off first and then restarted.

[0100] It is understandable that the compressor may restart, and the compressor often requires a startup process. During this period, the compressor's operating status may not be stable. Therefore, in order to ensure the stability of operation when running according to the target water flow pipeline pressure curve, the air conditioner can calculate the second indoor-outdoor ambient temperature ratio after the compressor has been running for a period of time, and then select the corresponding target water flow pipeline pressure curve.

[0101] In one possible implementation, the aforementioned running status setting instructions may include initial running instructions, running parameter modification instructions, first mode conversion setting instructions, and second mode conversion setting instructions.

[0102] The first mode conversion setting instruction is a switching instruction between heating mode and cooling mode, and the second mode conversion setting instruction is a switching instruction for heating mode.

[0103] Optionally, the initial operation command refers to the command sent by the user when the air conditioner or water heater is originally in the off state and is running for the first time after being turned on; the operation parameter modification command refers to the command sent by the user to modify certain operation parameters when the air conditioner or water heater is running, such as the operation temperature or the running time.

[0104] Optionally, the switching between heating and cooling modes includes switching between the internal operating modes of the air conditioner and switching between the operating modes of the air conditioner and the water heater. Specifically, switching between the internal operating modes of the air conditioner can be between the air conditioner's cooling mode and its heating mode, while switching between the operating modes of the air conditioner and the water heater can be between the air conditioner's cooling mode and the water heater's hot water production mode.

[0105] Optionally, heating mode switching refers to the switching between the heating mode of the air conditioner and the heating mode of the water heater.

[0106] In this case, the air conditioner can calculate the second indoor-outdoor ambient temperature ratio as follows:

[0107] If the running status setting command is the initial running command, then after running for a first preset time according to the initial running command, the indoor and outdoor ambient temperatures are obtained, and the second indoor and outdoor ambient temperature ratio is calculated.

[0108] Optionally, since the compressor needs a certain start-up time when the air conditioner is initially running, the indoor and outdoor ambient temperatures need to be obtained after the first preset duration of operation according to the initial operation command, and the second indoor and outdoor ambient temperature ratio needs to be calculated.

[0109] If the running status setting command is a running parameter modification command, then when the running parameter modification command is received, the indoor and outdoor ambient temperatures are obtained, and the second indoor and outdoor ambient temperature ratio is calculated.

[0110] Optionally, since the compressor does not need to be restarted when the operating parameters are modified, the indoor and outdoor ambient temperatures can be obtained and the second indoor and outdoor ambient temperature ratio can be calculated upon receiving the instruction to modify the operating parameters.

[0111] If the running status setting command is the first mode conversion setting command, then the indoor and outdoor ambient temperatures will be obtained after the second preset time after the mode conversion is completed, and the second indoor and outdoor ambient temperature ratio will be calculated.

[0112] Optionally, since the compressor needs to be restarted when switching between heating and cooling modes, the indoor and outdoor ambient temperatures need to be obtained and the second indoor-outdoor ambient temperature ratio needs to be calculated after a second preset time period after the mode switch is completed.

[0113] If the running status setting command is the second mode conversion setting command, then the indoor and outdoor ambient temperatures will be obtained when the mode conversion is completed, and the second indoor and outdoor ambient temperature ratio will be calculated.

[0114] Optionally, since the compressor does not need to be restarted when the heating mode is switched, the indoor and outdoor ambient temperatures can be obtained when the mode switch is completed, and the second indoor and outdoor ambient temperature ratio can be calculated.

[0115] Optionally, the first preset duration and the second preset duration can be set according to the actual situation. In one possible implementation, both the first preset duration and the second preset duration can be set to 5 minutes.

[0116] Understandably, the method for collecting the third outlet water temperature is similar to the process described above, so we will not go into too much detail here.

[0117] Optionally, in order to obtain a one-to-one correspondence between multiple operating states and the water flow pipeline pressure curve of the variable frequency water pump for use in energy-saving operation mode, the air conditioner can also collect relevant parameters in other operating modes to generate a correspondence between operating states and water flow pipeline pressure curves.

[0118] In one possible implementation, the air conditioner can generate a correspondence between the water flow pipeline pressure curve and the operating status in all operating modes except for the energy-saving mode.

[0119] In another possible implementation, in order to reduce the hardware pressure on the air conditioner, a learning mode can be set for the air conditioner, in which the air conditioner can generate a correspondence between the operating status and the water flow pipeline pressure curve.

[0120] Optionally, if the operating status includes operating mode, operating time, the first indoor-outdoor ambient temperature ratio at the start of operation and the indoor temperature at the end of operation, the air conditioner can obtain the first indoor-outdoor ambient temperature ratio at the start of operation, the indoor temperature at the end of operation, the operating time, and the water flow pipeline pressure corresponding to each time within the operating time in other operating modes.

[0121] Other operating modes are those other than the energy-saving operating mode.

[0122] Optionally, considering that users may sometimes turn off the mode before the air conditioner reaches the target operating temperature, if the indoor temperature at the end of the operation does not reach the user's set temperature, then this operation is not necessarily a reliable reference.

[0123] Based on this, when the indoor temperature reaches the user-set temperature at the end of operation, the air conditioner can generate a first water flow pipeline pressure curve based on the running time and the corresponding water flow pipeline pressure at each time within the running time, and save the correspondence between the operating mode, running time, first indoor-outdoor ambient temperature ratio, indoor temperature, and the first water flow pipeline pressure curve.

[0124] Optionally, since there is a certain relationship between the pressure value of the water flow pipeline and the water flow rate in the water flow pipeline, the air conditioner can also generate a water flow rate change curve corresponding to the operating state based on the operating time and the water flow pipeline pressure at each moment within the operating time.

[0125] Optionally, considering the possibility that the user's set temperature may be reached ahead of schedule, in order to ensure that the variable frequency water pump consumes the least amount of energy, the air conditioner can perform corresponding calculations based on the water flow pipeline pressure at each moment during the running time, thereby determining the target water flow pipeline pressure at each moment during the running time, so that the indoor temperature will just reach the user's set temperature at the end of the operation.

[0126] Specifically, the air conditioner can generate the first water flow pipeline pressure curve through the following steps:

[0127] Determine the first running time from the start of operation until the indoor temperature reaches the user-set temperature, and the second running time from the time the indoor temperature reaches the user-set temperature until the operation ends.

[0128] Based on the water flow pipeline pressure at each moment within the first running time and the water flow pipeline pressure at each moment within the second running time, the target water flow pipeline pressure at each moment within the running time is calculated to generate the first water flow pipeline pressure curve; the first water flow pipeline pressure curve represents the indoor temperature reaching the user-set temperature at the end of the running time.

[0129] Optionally, since there is a certain relationship between the water flow pressure in the water pipe and the water flow rate in the water pipe, the air conditioner can determine the total water flow rate within the operating time by using the water flow pressure at each time within the first operating time and the water flow pressure at each time within the second operating time, thereby calculating the average water flow rate at each time within the operating time, and determining the target water flow pressure at each time based on the average water flow rate.

[0130] Understandably, the pressure curve of the first water flow pipeline represents the indoor temperature just reaching the user's set temperature at the end of the operation period. Therefore, the variable frequency water pump does not need to run at high speed to reach the user's set temperature as soon as possible, nor does it need to maintain the temperature. Thus, the curve can represent the water flow pipeline pressure change with the least energy consumption under this operating state.

[0131] Optionally, considering that the air conditioner may already have a corresponding water flow pipeline pressure curve stored for a given operating state, after generating the first water flow pipeline pressure curve corresponding to the operating state, it is necessary to first determine whether the air conditioner has a second water flow pipeline pressure curve corresponding to the operating state. If the second water flow pipeline pressure curve corresponding to the operating state is not stored, then the correspondence between the first water flow pipeline pressure curve and the operating state is stored.

[0132] Optionally, if a second water flow pipeline pressure curve corresponding to this operating state has already been stored, the air conditioner can further refine the second water flow pipeline pressure curve based on the currently generated first water flow pipeline pressure curve in order to improve the accuracy of the water flow pipeline pressure curve.

[0133] Specifically, before saving the correspondence between the operating mode, operating time, first indoor-outdoor temperature ratio, and indoor temperature and the first water flow pipeline pressure curve, the air conditioner can determine whether it already stores a second water flow pipeline pressure curve corresponding to the operating mode, operating time, first indoor-outdoor temperature ratio, and indoor temperature. If a second water flow pipeline pressure curve is stored, a third water flow pipeline pressure curve is generated based on the first and second water flow pipeline pressure curves, and the correspondence between the operating mode, operating time, first indoor-outdoor temperature ratio, and indoor temperature and the third water flow pipeline pressure curve is saved. Optionally, the air conditioner can determine the water flow pipeline pressure at each time point by averaging the water flow pipeline pressure at each time point, thereby generating the third water flow pipeline pressure curve.

[0134] Optionally, if the operating status includes operating mode, operating time, the first indoor-outdoor ambient temperature ratio at the start of operation and the indoor-outdoor ambient temperature ratio at the stop of operation, or operating mode, operating time, the first outlet water temperature at the start of operation and the second outlet water temperature at the stop of operation, then the generation and storage process of the corresponding water flow pipeline pressure curve is similar to the above process, and will not be elaborated further here.

[0135] In addition, this application also provides a variable frequency water pump control device, please refer to [link to relevant documentation]. Figure 4 This is a block diagram of a variable frequency water pump control device provided in an embodiment of this application. The variable frequency water pump control device includes: a determination module 200 and an adjustment module 210.

[0136] The determining module 200 is used to determine the target water flow pipeline pressure at the current moment in energy-saving operation mode based on the target water flow pipeline pressure curve and the current running time; the target water flow pipeline pressure curve is determined based on the target operating state set by the user and the corresponding relationship.

[0137] Understandably, the determining module 200 can also be used to perform the above step S20.

[0138] The adjustment module 210 is used to adjust the variable frequency water pump according to the actual water flow pipeline pressure and the target water flow pipeline pressure at the current moment, so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions.

[0139] Understandably, the adjustment module 210 can also be used to perform the above step S21.

[0140] Optionally, the adjustment module 210 is further configured to determine whether the actual water flow pipeline pressure meets the energy-saving conditions based on the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure; wherein, the energy-saving conditions include the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure being within a preset range; if the actual water flow pipeline pressure does not meet the energy-saving conditions, the water flow rate of the variable frequency water pump is adjusted so that the actual water flow pipeline pressure meets the energy-saving conditions.

[0141] Understandably, the adjustment module 210 can also be used to perform the above steps S21-1 to S21-2.

[0142] Optionally, the operating status includes the operating mode, operating duration, the first indoor-outdoor ambient temperature ratio at the start of operation, and the indoor temperature at the stop of operation; the target operating status includes the target operating mode, target operating duration, target operating temperature, and the second indoor-outdoor ambient temperature ratio at the start of operation based on the target operating temperature.

[0143] The determining module 200 is also used to receive the operating status setting instruction sent by the user in the energy-saving operation mode, and calculate the second indoor-outdoor ambient temperature ratio; the operating status setting instruction includes the target operating mode, the target operating time and the target operating temperature; and determine the target water flow pipeline pressure curve based on the target operating mode, the target operating time, the target operating temperature, the second indoor-outdoor ambient temperature ratio and the corresponding relationship.

[0144] Optionally, the operation status setting instructions include an initial operation instruction, an operation parameter modification instruction, a first mode conversion setting instruction, and a second mode conversion setting instruction; the first mode conversion setting instruction is a switching instruction between heating mode and cooling mode, and the second mode conversion setting instruction is a switching instruction between heating mode.

[0145] The determining module 200 is further configured to: if the running status setting instruction is an initial running instruction, acquire the indoor and outdoor ambient temperatures and calculate the second indoor-outdoor ambient temperature ratio after running for a first preset time according to the initial running instruction; if the running status setting instruction is a running parameter modification instruction, acquire the indoor and outdoor ambient temperatures and calculate the second indoor-outdoor ambient temperature ratio upon receiving the running parameter modification instruction; if the running status setting instruction is a first mode conversion setting instruction, acquire the indoor and outdoor ambient temperatures and calculate the second indoor-outdoor ambient temperature ratio after a second preset time following the completion of the mode conversion; if the running status setting instruction is a second mode conversion setting instruction, acquire the indoor and outdoor ambient temperatures and calculate the second indoor-outdoor ambient temperature ratio upon the completion of the mode conversion.

[0146] Optionally, in Figure 4 On this basis, Figure 5 For another block diagram of the variable frequency water pump control device provided in the embodiments of this application, please refer to [link / reference]. Figure 5 The variable frequency water pump control device also includes a curve generation module 220.

[0147] The curve generation module 220 is used to obtain the first indoor-outdoor ambient temperature ratio at the start of operation, the indoor temperature at the end of operation, the running time, and the water flow pipeline pressure at each time within the running time in other operating modes; other operating modes are operating modes other than the energy-saving operating mode; if the indoor temperature at the end of operation reaches the user-set temperature, then a first water flow pipeline pressure curve is generated based on the running time and the water flow pipeline pressure at each time within the running time; the correspondence between the operating mode, running time, first indoor-outdoor ambient temperature ratio, indoor temperature, and the first water flow pipeline pressure curve is saved.

[0148] Optionally, the curve generation module 220 is further configured to determine the first running time from the start of operation to when the indoor temperature reaches the user-set temperature, and the second running time from when the indoor temperature reaches the user-set temperature until the end of operation; based on the water flow pipeline pressure corresponding to each moment within the first running time and the water flow pipeline pressure corresponding to each moment within the second running time, calculate the target water flow pipeline pressure corresponding to each moment within the running time to generate a first water flow pipeline pressure curve; the first water flow pipeline pressure curve represents the indoor temperature reaching the user-set temperature at the end of operation.

[0149] Optionally, the curve generation module 220 is also used to determine whether the air conditioner has stored the operating mode, operating time, first indoor-outdoor ambient temperature ratio, and second water flow pipeline pressure curve corresponding to the indoor temperature; if the second water flow pipeline pressure curve is stored, then a third water flow pipeline pressure curve is generated based on the first water flow pipeline pressure curve and the second water flow pipeline pressure curve; and the correspondence between the operating mode, operating time, first indoor-outdoor ambient temperature ratio, indoor temperature, and the third water flow pipeline pressure curve is saved.

[0150] The variable frequency water pump control method provided in this application embodiment allows the air conditioner to determine whether a second water flow pipeline pressure curve corresponding to the operating state is already stored in the air conditioner before saving the first water flow pipeline pressure curve. If it exists, a third water flow pipeline pressure curve is generated based on the first and second water flow pipeline pressure curves, and the correspondence between the operating state and the third water flow pipeline pressure curve is saved. Therefore, the water flow pipeline pressure curves stored in the air conditioner can be continuously improved.

[0151] Optionally, embodiments of this application also provide a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, can implement the variable frequency water pump control method provided in embodiments of this application.

[0152] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application shall be determined by the scope defined in the claims.

Claims

1. A variable frequency water pump control method, characterized in that, The method is applied to an air conditioner, wherein the air conditioner is equipped with a variable frequency water pump, and the air conditioner stores a one-to-one correspondence between multiple operating states and the water flow pipeline pressure curves of the variable frequency water pump. The water flow pipeline pressure curves characterize the water flow pipeline pressure change with minimum energy consumption under the specified operating state. The method includes: In energy-saving operation mode, the target water flow pipeline pressure at the current moment is determined based on the target water flow pipeline pressure curve and the current running time; the target water flow pipeline pressure curve is determined based on the target operating state set by the user and the corresponding relationship. The variable frequency water pump is adjusted according to the actual water flow pipeline pressure and the target water flow pipeline pressure at the current moment, so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions. The operating state includes operating mode, operating duration, a first indoor-outdoor ambient temperature ratio at the start of operation, and indoor temperature at the stop of operation; the target operating state includes target operating mode, target operating duration, target operating temperature, and a second indoor-outdoor ambient temperature ratio at the start of operation based on the target operating temperature; the method further includes: In energy-saving operation mode, the system receives operation status setting instructions sent by the user and calculates the second indoor-outdoor ambient temperature ratio; the operation status setting instructions include the target operation mode, target operating duration, and target operating temperature; The target water flow pipeline pressure curve is determined based on the target operating mode, the target operating time, the target operating temperature, the second indoor-outdoor ambient temperature ratio, and the corresponding relationship.

2. The method according to claim 1, characterized in that, The step of adjusting the variable frequency water pump based on the actual water flow pipeline pressure and the target water flow pipeline pressure at the current moment, so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions, includes: Based on the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure, determine whether the actual water flow pipeline pressure meets the energy-saving conditions; The energy-saving condition includes the ratio of the actual water flow pipeline pressure to the target water flow pipeline pressure being within a preset range; If the actual water flow pipeline pressure does not meet the energy-saving conditions, the water flow rate of the variable frequency water pump will be adjusted so that the actual water flow pipeline pressure meets the energy-saving conditions.

3. The method according to claim 1, characterized in that, The operating status setting instructions include an initial operating instruction, an operating parameter modification instruction, a first mode conversion setting instruction, and a second mode conversion setting instruction; the first mode conversion setting instruction is a switching instruction between heating mode and cooling mode, and the second mode conversion setting instruction is a heating mode switching instruction; the calculation of the second indoor-outdoor ambient temperature ratio includes: If the running status setting instruction is an initial running instruction, then after running for a first preset time according to the initial running instruction, the indoor and outdoor ambient temperatures are obtained, and the second indoor and outdoor ambient temperature ratio is calculated. If the running status setting instruction is a running parameter modification instruction, then upon receiving the running parameter modification instruction, the indoor and outdoor ambient temperatures are obtained, and the second indoor and outdoor ambient temperature ratio is calculated; If the operating status setting instruction is a first mode conversion setting instruction, then the indoor and outdoor ambient temperatures are obtained after the second preset time period after the mode conversion is completed, and the second indoor and outdoor ambient temperature ratio is calculated. If the operating status setting instruction is a second mode conversion setting instruction, then when the mode conversion is completed, the indoor and outdoor ambient temperatures are obtained, and the second indoor and outdoor ambient temperature ratio is calculated.

4. The method according to claim 1, characterized in that, The method further includes: In other operating modes, the first indoor-outdoor ambient temperature ratio at the start of operation, the indoor temperature at the end of operation, the operating time, and the water flow pipeline pressure at each time within the operating time are obtained; the other operating modes are operating modes other than the energy-saving operating mode. If the indoor temperature at the end of the operation reaches the user-set temperature, then a first water flow pipeline pressure curve is generated based on the running time and the water flow pipeline pressure at each time within the running time. The correspondence between the operating mode, the operating time, the first indoor-outdoor ambient temperature ratio, the indoor temperature, and the pressure curve of the first water flow pipeline is saved.

5. The method according to claim 4, characterized in that, The step of generating a first water flow pipeline pressure curve based on the running time and the water flow pipeline pressure at each moment within the running time includes: Determine the first running time from the start of operation to when the indoor temperature reaches the user-set temperature, and the second running time from when the indoor temperature reaches the user-set temperature until the end of operation; Based on the water flow pipeline pressure at each moment within the first running time and the water flow pipeline pressure at each moment within the second running time, the target water flow pipeline pressure at each moment within the running time is calculated to generate a first water flow pipeline pressure curve; the first water flow pipeline pressure curve represents that the indoor temperature reaches the user-set temperature at the end of the operation.

6. The method according to claim 4, characterized in that, Before saving the correspondence between the operating mode, the operating time, the first indoor-outdoor ambient temperature ratio, and the indoor temperature, and the first water flow pipeline pressure curve, the method further includes: Determine whether the air conditioner has stored the operating mode, the operating time, the first indoor-outdoor ambient temperature ratio, and the second water flow pipeline pressure curve corresponding to the indoor temperature; If the second water flow pipeline pressure curve is stored, then the third water flow pipeline pressure curve is generated based on the first water flow pipeline pressure curve and the second water flow pipeline pressure curve. The correspondence between the operating mode, the operating time, the first indoor-outdoor ambient temperature ratio, the indoor temperature, and the pressure curve of the third water flow pipeline is saved.

7. A variable frequency water pump control device, characterized in that, The device is applied to an air conditioner, wherein the air conditioner is equipped with a variable frequency water pump, and the air conditioner stores a one-to-one correspondence between multiple operating states and the water flow pipeline pressure curves of the variable frequency water pump. The water flow pipeline pressure curves characterize the water flow pipeline pressure change with minimal energy consumption under the specified operating state. The device includes: The determination module is used to determine the target water flow pipeline pressure at the current moment in energy-saving operation mode based on the target water flow pipeline pressure curve and the current running time; the target water flow pipeline pressure curve is determined according to the target operating state set by the user and the corresponding relationship. The adjustment module is used to adjust the variable frequency water pump according to the actual water flow pipeline pressure and the target water flow pipeline pressure at the current moment, so that the actual water flow pipeline pressure at the current moment meets the preset energy-saving conditions. The operating status includes operating mode, operating time, a first indoor-outdoor ambient temperature ratio at the start of operation, and indoor temperature at the stop of operation; the target operating status includes target operating mode, target operating time, target operating temperature, and a second indoor-outdoor ambient temperature ratio at the start of operation based on the target operating temperature; the determining module is further configured to receive an operating status setting instruction sent by the user in energy-saving operating mode, and calculate the second indoor-outdoor ambient temperature ratio; the operating status setting instruction includes target operating mode, target operating time, and target operating temperature; and determine the target water flow pipeline pressure curve based on the target operating mode, the target operating time, the target operating temperature, the second indoor-outdoor ambient temperature ratio, and the corresponding relationship.

8. An air conditioner, characterized in that, The device includes a processor and a variable frequency water pump, wherein the processor is electrically connected to the variable frequency water pump, and the processor is used to execute a computer program to implement the variable frequency water pump control method according to any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the variable frequency water pump control method according to any one of claims 1-6.

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