Fan coil air speed control method and device, computer storage medium and air conditioner

Abstract

The invention provides a fan coil air speed control method and device, a computer storage medium and an air conditioner. Determining a wind speed gear adjustment strategy based on the historical wind speed gears; wherein the historical wind speed gear refers to the corresponding wind speed gear before the last shutdown of the fan coil; acquiring a current detection temperature, and comparing the current detection temperature with a limit temperature range to obtain a temperature comparison result; based on the wind speed gear adjusting strategy, the current wind speed gear is adjusted by adopting the temperature comparison result; and the fan coil is controlled by adopting the adjusted wind speed gear, so that the comfort level of indoor users can be improved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning technology, and more specifically, to a fan coil wind speed control method, device, computer storage medium and air conditioner in the field of fan coil control technology. Background Art

[0002] As the terminal device of the air conditioning system, the fan coil unit directly participates in the regulation of indoor temperature. At present, the control accuracy of the fan coil unit is poor, and the air volume cannot be adjusted in time according to the change of indoor temperature, which affects the comfort level of indoor users. Summary of the invention

[0003] The present application provides a fan coil unit wind speed control method, device, computer storage medium and air conditioner. The fan coil unit wind speed control method can improve the control accuracy of the fan coil unit, and can adjust the air volume in time according to the change of indoor temperature, thereby improving the user's comfort level.

[0004] In a first aspect, a method for controlling wind speed of a fan coil unit is provided, the method comprising:

[0005] Determine a wind speed gear adjustment strategy based on historical wind speed gears; wherein the historical wind speed gear refers to the wind speed gear corresponding to the fan coil unit before the most recent shutdown;

[0006] Obtaining the current detected temperature, comparing the current detected temperature with the limit temperature range, and obtaining a temperature comparison result;

[0007] Based on the wind speed level adjustment strategy and using the temperature comparison result, adjusting the current wind speed level;

[0008] The fan coil unit is controlled using the adjusted wind speed gear.

[0009] In some embodiments, the fan coil unit operates in a cooling mode;

[0010] The adjusting the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result includes:

[0011] If the temperature comparison result is that the current detected temperature is lower than the set temperature in the limit temperature range, then the current wind speed level is reduced;

[0012] If the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, then the current wind speed gear is increased; the first critical temperature is greater than the set temperature;

[0013] If the temperature comparison result is that the current detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted to the shutdown gear.

[0014] In some embodiments, after adjusting the current wind speed gear to the shutdown gear, the method further includes:

[0015] Using the current wind speed level to update the historical wind speed level;

[0016] If the temperature comparison result is that the current detected temperature is greater than the third critical temperature, the shutdown gear is adjusted to the updated historical wind speed gear, and the third critical temperature is greater than the set temperature and less than the first critical temperature.

[0017] In some embodiments, if the temperature comparison result is that the current detected temperature is less than the set temperature in the limit temperature range, then reducing the current wind speed level includes:

[0018] If the temperature comparison result is that the current detected temperature is lower than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear, or the current wind speed gear is reduced from the third gear to the first gear;

[0019] If the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, increasing the current wind speed level includes:

[0020] If the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, the current wind speed gear is increased from the second gear to the first gear;

[0021] If the temperature comparison result is that the current detected temperature is less than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted to the shutdown wind speed gear, including:

[0022] If the temperature comparison result is that the current detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear; the shutdown gear is lower than the second gear.

[0023] In some embodiments, the historical wind speed gear is the first gear; the method further includes:

[0024] If the current wind speed gear is the first gear, and the previous wind speed gear is the second gear, and the temperature comparison result is that the current detected temperature is greater than the fourth critical temperature in the limit temperature range, then the current wind speed gear is adjusted from the first gear to the third gear; the fourth critical temperature is greater than the first critical temperature.

[0025] In some embodiments, the historical wind speed gear is the first gear;

[0026] If the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, increasing the current wind speed level includes:

[0027] If the current wind speed gear is the first gear, and the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, the current wind speed gear is increased from the first gear to the third gear.

[0028] In some embodiments, the historical wind speed gear is the second gear; the method further includes:

[0029] If the temperature comparison result is that the current detected temperature is greater than the fourth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the third gear; the fourth critical temperature is greater than the first critical temperature.

[0030] In some embodiments, the fan coil unit operates in a heating mode;

[0031] The adjusting the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result includes:

[0032] If the temperature comparison result is that the current detected temperature is greater than the set temperature in the limit temperature range, then the current wind speed level is reduced;

[0033] If the temperature comparison result is that the current detected temperature is lower than the fifth critical temperature in the limit temperature range, then the current wind speed gear is increased; the fifth critical temperature is lower than the set temperature;

[0034] If the temperature comparison result is that the current detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted to the shutdown gear; the sixth critical temperature is greater than the set temperature.

[0035] In some embodiments, after adjusting the current wind speed gear to the shutdown gear, the method further includes:

[0036] Using the current wind speed level to update the historical wind speed level;

[0037] If the temperature comparison result is that the current detected temperature is lower than the seventh critical temperature, the shutdown gear is adjusted to the updated historical wind speed gear, and the seventh critical temperature is lower than the set temperature and higher than the fifth critical temperature.

[0038] In some embodiments, if the temperature comparison result is that the current detected temperature is greater than the set temperature in the limit temperature range, then reducing the current wind speed level includes:

[0039] If the temperature comparison result is that the current detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear, or the current wind speed gear is reduced from the third gear to the first gear;

[0040] If the temperature comparison result is that the current detected temperature is less than the fifth critical temperature in the limit temperature range, increasing the current wind speed level includes:

[0041] If the temperature comparison result is that the current detected temperature is lower than the fifth critical temperature in the limit temperature range, the current wind speed gear is increased from the second gear to the first gear;

[0042] If the temperature comparison result is that the current detected temperature is greater than the sixth critical temperature in the limit temperature range, adjusting the current wind speed gear to the shutdown gear includes:

[0043] If the temperature comparison result is that the current detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear; the shutdown gear is lower than the second gear.

[0044] In some embodiments, the historical wind speed gear is the first gear; the method further includes:

[0045] If the current wind speed gear is the first gear, and the previous wind speed gear is the second gear, and the temperature comparison result is that the current detected temperature is lower than the eighth critical temperature in the limit temperature range, then the current wind speed gear is adjusted from the first gear to the third gear; the eighth critical temperature is lower than the fifth critical temperature.

[0046] In some embodiments, the historical wind speed gear is the first gear;

[0047] If the temperature comparison result is that the current detected temperature is less than the fifth critical temperature in the limit temperature range, increasing the current wind speed level includes:

[0048] If the current wind speed gear is the first gear, and the temperature comparison result is that the current detected temperature is less than the fifth critical temperature in the limit temperature range, the current wind speed gear is increased from the first gear to the third gear.

[0049] In some embodiments, the historical wind speed gear is the second gear; the method further includes:

[0050] If the temperature comparison result is that the current detected temperature is greater than the eighth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the third gear; the eighth critical temperature is less than the fifth critical temperature.

[0051] In some embodiments, before determining the wind speed level adjustment strategy based on the historical wind speed levels, the method further includes:

[0052] In response to a power-on instruction, obtaining a first detected temperature, comparing the first detected temperature with a limit temperature range, and obtaining a first temperature comparison result;

[0053] According to the first temperature comparison result, setting the wind speed gear to the target gear;

[0054] The wind speed gear is lowered to the shutdown gear by adopting a wind speed gear adjustment strategy corresponding to the target gear.

[0055] In some embodiments, the fan coil unit operates in a cooling mode;

[0056] The step of setting the wind speed gear as the target gear according to the first temperature comparison result includes:

[0057] If the first temperature comparison result is that the first detected temperature is greater than the set temperature, the wind speed gear is set to the third gear, and the third gear is the target gear;

[0058] If the first temperature comparison result is that the first detected temperature is less than or equal to the set temperature and greater than the second critical temperature, the wind speed gear is set to the first gear, and the first gear is the target gear.

[0059] In some embodiments, the third gear is the target gear;

[0060] The adopting of a wind speed gear adjustment strategy corresponding to the target gear to reduce the wind speed gear to a shutdown gear comprises:

[0061] Acquire a second detected temperature, compare the second detected temperature with the limit temperature range, and obtain a second temperature comparison result;

[0062] If the second temperature comparison result is that the second detected temperature is lower than the set temperature in the limit temperature range, reducing the current wind speed gear from the third gear to the first gear;

[0063] Acquire a third detected temperature, compare the third detected temperature with the limit temperature range, and obtain a third temperature comparison result;

[0064] If the third temperature comparison result is that the third detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the shutdown gear.

[0065] In some embodiments, the first gear is the target gear;

[0066] The adopting of a wind speed gear adjustment strategy corresponding to the target gear to reduce the wind speed gear to a shutdown gear comprises:

[0067] Acquire a fourth detected temperature, compare the fourth detected temperature with the limit temperature range, and obtain a fourth temperature comparison result;

[0068] If the fourth temperature comparison result is that the fourth detected temperature is lower than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear;

[0069] Acquire a fifth detected temperature, compare the fifth detected temperature with the limit temperature range, and obtain a fifth temperature comparison result;

[0070] If the fifth temperature comparison result is that the fifth detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear.

[0071] In some embodiments, the fan coil unit operates in a heating mode;

[0072] The step of setting the wind speed gear as the target gear according to the first temperature comparison result includes:

[0073] If the first temperature comparison result is that the first detected temperature is less than the set temperature, the wind speed gear is set to the third gear, and the third gear is the target gear;

[0074] If the first temperature comparison result is that the first detected temperature is greater than or equal to the set temperature and less than the sixth critical temperature, the wind speed gear is set to the first gear, and the first gear is the target gear.

[0075] In some embodiments, the third gear is the target gear;

[0076] The adopting of a wind speed gear adjustment strategy corresponding to the target gear to reduce the wind speed gear to a shutdown gear comprises:

[0077] Acquire a sixth detected temperature, compare the sixth detected temperature with the limit temperature range, and obtain a sixth temperature comparison result;

[0078] If the sixth temperature comparison result is that the sixth detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the third gear to the first gear;

[0079] Acquire a seventh detected temperature, compare the seventh detected temperature with the limit temperature range, and obtain a seventh temperature comparison result;

[0080] If the seventh temperature comparison result is that the seventh detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the shutdown gear.

[0081] In some embodiments, the first gear is the target gear;

[0082] The adopting of a wind speed gear adjustment strategy corresponding to the target gear to reduce the wind speed gear to a shutdown gear comprises:

[0083] Acquiring an eighth detected temperature, comparing the eighth detected temperature with the limit temperature range, and obtaining an eighth temperature comparison result;

[0084] If the eighth temperature comparison result is that the eighth detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear;

[0085] Acquire a ninth detected temperature, compare the ninth detected temperature with the limit temperature range, and obtain a ninth temperature comparison result;

[0086] If the ninth temperature comparison result is that the ninth detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear.

[0087] In a second aspect, a fan coil unit wind speed control device is provided, the device comprising:

[0088] A determination module, used to determine a wind speed gear adjustment strategy based on a historical wind speed gear; wherein the historical wind speed gear refers to the wind speed gear corresponding to the fan coil unit before the most recent shutdown;

[0089] A comparison module is used to obtain the current detection temperature, compare the current detection temperature with the limit temperature range, and obtain a temperature comparison result;

[0090] An adjustment module, configured to adjust the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result;

[0091] The control module is used to control the fan coil unit using the adjusted wind speed gear.

[0092] According to a third aspect, a computer program product is provided, comprising: a computer program code, which, when executed on a computer, enables the computer to execute the method according to the first aspect or any possible implementation of the first aspect.

[0093] According to a fourth aspect, a computer storage medium is provided, wherein the computer storage medium stores computer program code, and when the computer program is executed, the method according to the first aspect or any possible implementation manner of the first aspect is implemented.

[0094] In a fifth aspect, an air conditioner is provided, comprising:

[0095] A memory for storing executable program codes;

[0096] A processor is used to call and run the executable program code from the memory, so that the air conditioner executes the method in the above-mentioned first aspect or any possible implementation manner of the first aspect.

[0097] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0098] The embodiments of the present application provide a fan coil wind speed control method, device, computer storage medium and air conditioner, by determining a wind speed gear adjustment strategy based on historical wind speed gears; wherein the historical wind speed gear refers to the wind speed gear corresponding to the fan coil unit before the most recent shutdown; obtaining the current detected temperature, comparing the current detected temperature with the limit temperature range, and obtaining a temperature comparison result; adjusting the current wind speed gear based on the wind speed gear adjustment strategy and using the temperature comparison result, and the current wind speed gear adjustment strategy can be determined based on the wind speed gear corresponding to the last shutdown, so that the corresponding load size can be automatically matched with different wind gears when the room temperature reaches near the set value, on the one hand, avoiding frequent switching of wind gears due to inappropriate wind gears, and improving the temperature control accuracy, so that the fan coil unit can operate with minimal energy consumption as much as possible, and on the other hand, it can improve the overall comfort level. BRIEF DESCRIPTION OF THE DRAWINGS

[0099] Figure 1 It is a schematic diagram of the opening and closing control of the water valve (cooling mode) in the related art;

[0100] Figure 2 It is a schematic diagram of the gear control of the fan coil unit (cooling mode) in the related art;

[0101] Figure 3 A schematic diagram of the architecture of a fan coil wind speed control system provided in an embodiment of the present application;

[0102] Figure 4 A schematic diagram of a flow chart of a fan coil unit wind speed control method provided in an embodiment of the present application;

[0103] Figure 5 A schematic flow chart of another fan coil wind speed control method provided in an embodiment of the present application;

[0104] Figure 6 This is a schematic diagram comparing the indoor temperature and the limit temperature range in cooling mode;

[0105] Figure 7 This is a schematic diagram of the comparison between the indoor temperature and the limit temperature range in the heating mode;

[0106] Figure 8 A schematic diagram of a wind speed gear adjustment strategy corresponding to the third gear being the target gear in cooling mode;

[0107] Fig. 9 A schematic diagram of a wind speed gear adjustment strategy corresponding to the first gear being the target gear in cooling mode;

[0108] Fig.10 A schematic diagram of a wind speed gear adjustment strategy corresponding to the third gear being the target gear in the heating mode;

[0109] Fig.11 It is a schematic diagram of the wind speed gear adjustment strategy corresponding to the first gear when the target gear is in the heating mode;

[0110] Figure 12-13 It is a schematic diagram of the adjustment strategy of the middle stroke gear in the cooling mode;

[0111] Figure 14-15 It is a schematic diagram of the low wind speed adjustment strategy in cooling mode;

[0112] Figure 16-Figure 17 It is a schematic diagram of the adjustment strategy of the middle stroke gear in the heating mode;

[0113] Figure 18-19 It is a schematic diagram of the low wind speed adjustment strategy in the heating mode;

[0114] Fig. 20 It is a schematic diagram of the overall wind speed adjustment strategy in cooling mode;

[0115] Fig.21 This is a schematic diagram of the overall wind speed adjustment strategy in heating mode;

[0116] Fig. 22 It is a structural schematic diagram of a fan coil wind speed control device provided in an embodiment of the present application;

[0117] Fig.23 It is a structural schematic diagram of an air conditioner provided in an embodiment of the present application. DETAILED DESCRIPTION

[0118] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0119] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0120] When fan coil units are actually used, in most cases the air outlet speed of the fan coil units is often set to a certain wind speed level in manual mode or automatic mode.

[0121] Taking the case where a fan coil unit cools down the indoor temperature and the fan coil unit is in automatic mode as an example, the fan coil unit has problems of slow cooling and insufficient control accuracy in controlling the indoor temperature.

[0122] Specifically, see Figure 1 to Figure 2 , Figure 1 A schematic diagram showing the opening and closing control of a water valve (cooling mode) in the related art is shown; Figure 2 A schematic diagram of the gear control of a fan coil unit (cooling mode) in the related art is shown.

[0123] like Figure 1 to Figure 2 As shown, taking the fan coil unit in cooling mode as an example, the set temperature of the indoor temperature (the temperature value set by the user according to needs) is W. SDC1 is the conversion deviation corresponding to the wind speed gear P1, SDC2 is the conversion deviation corresponding to the wind speed gear P2, and SDC3 is the conversion deviation corresponding to the wind speed gear P3; the conversion deviation (including SDC1, SDC2 and SDC3, where the values ​​of SDC1, SDC2 and SDC3 may be equal or unequal, and may be set according to actual conditions, and is not limited in this application) has a value range of 0.5°C to 6.0°C, and the default conversion deviation is usually 1°C. Figure 1 As shown, the set temperature range of the indoor temperature is (W-0.5×SDC1, W+0.5×SDC1), and the set temperature range of the indoor temperature can be understood as the allowable deviation range of the set temperature value W of the indoor temperature.

[0124] When the indoor temperature is lower than the lower limit of the set temperature range (W-0.5×SDC1, W+0.5×SDC1), the water valve (the water valve is used to control the water inlet and outlet in the coil of the fan coil) is closed and the fan coil is shut down (it should be noted that the fan coil shutdown in this application means that the fan in the fan coil is shut down and the fan coil stops exhausting air). When the indoor temperature rises to exceed the upper limit of the set temperature range (W-0.5×SDC1, W+0.5×SDC1) (that is, W+0.5×SDC1), the water valve opens and the fan coil is switched to the low wind gear, and the fan coil runs at the low wind gear. When the indoor temperature further rises to exceed W+1 / 2SDC1+SDC2, the fan coil is switched from the low wind gear to the medium wind gear, and the fan coil runs at the medium wind gear. At this time, the water valve is in the open state. When the indoor temperature further increases to exceed W+1 / 2SDC1+SDC2+SDC3, the fan coil unit switches from the medium wind speed to the high wind speed, and the fan coil unit operates at the high wind speed, and the water valve is in the open state. Further, when the indoor temperature drops to below the set temperature value W+1 / 2SDC1+SDC2, the fan coil unit switches from the high wind speed to the medium wind speed, and the fan coil unit operates at the medium wind speed, and the water valve is in the open state. When the indoor temperature further drops to below the upper limit value (i.e. W+0.5×SDC1) of the set temperature range (W-0.5×SDC1, W+0.5×SDC1), the fan coil unit switches from the medium wind speed to the low wind speed, and the fan coil unit operates at the low wind speed, and the water valve is in the open state. When the indoor temperature further drops to a value lower than the lower limit of the set temperature range (W-0.5×SDC1, W+0.5×SDC1) (ie, W-0.5×SDC1), the fan coil unit is shut down and the water valve is closed.

[0125] Take the fan coil unit in cooling mode as an example. When the fan coil unit is just turned on, the indoor temperature is often high (for example, the indoor temperature exceeds W+1 / 2SDC1+SDC2+SDC3). As the indoor temperature continues to drop, the fan coil unit's gear also continues to decrease. For example, when the indoor temperature drops below W+1 / 2SDC1+SDC2, the fan coil unit switches from high wind gear to medium wind gear; when the indoor temperature further drops to below the upper limit of the set temperature range (W-0.5×SDC1, W+0.5×SDC1) (that is, W+0.5×SDC1), the fan coil unit switches from medium wind gear to low wind gear; this causes the fan coil unit to switch from high wind gear to medium wind gear and further to low wind gear. The air volume of the fan coil unit gradually decreases, and the cooling speed of the indoor temperature also gradually decreases, resulting in the indoor temperature not being able to quickly drop to the set temperature value, affecting the user's comfort level.

[0126] At the same time, when the fan coil is at a low wind speed, the air volume of the fan coil is low, and the demand can only be met when the indoor temperature rises less relative to the set temperature value W. When the indoor temperature rises more relative to the set temperature value W, the air volume of the fan coil at a low wind speed cannot meet the cooling demand of the indoor temperature; resulting in the fan coil gear switching between low wind speed and medium wind speed; this situation will cause the indoor temperature to fluctuate around the upper limit of the set temperature range (W-0.5×SDC1, W+0.5×SDC1), resulting in a steady-state deviation in the indoor temperature and failing to reach the set temperature value W.

[0127] To solve the above problems, see Figure 3 , Figure 3 It is a schematic diagram of the architecture of a fan coil wind speed control system provided in an embodiment of the present application.

[0128] The fan coil unit 20, as the terminal device of the air conditioning system (usually central air conditioning), directly participates in the regulation of indoor temperature. The fan coil unit 20 mainly uses the fan component to exchange heat between the air and the cold water or hot water in the coil, and outputs the cooled or heated air to the room, thereby lowering or raising the indoor temperature.

[0129] like Figure 3 As shown, the fan coil unit 20 generally includes a chassis 21, a fan 22, a coil unit 23 and a controller 24. The fan 22 and the coil unit 23 are located in the chassis 21. The controller 24 is generally disposed in the chassis 21. In some embodiments, the controller may also be disposed outside the chassis 21, which is not limited in this application and may be disposed according to actual needs. The chassis 21 is provided with an air inlet 211 for air to enter and an air outlet 212 for air to be discharged.

[0130] The controller 24 is respectively connected to the fan 22 and the coil 23. Specifically, the controller 24 controls the air volume of the fan 22 by controlling the gear of the fan 22; the controller 24 controls the amount of cold water or hot water entering and exiting the coil 23, and the speed at which the cold water or hot water circulates in the coil 23 by controlling the coil 23.

[0131] When the fan coil unit 20 is cooling, cold water enters the water inlet of the coil unit 23, and the cold water circulates in the coil unit 23. At this time, the controller 24 of the fan coil unit 20 controls the fan 22 to operate, so that air enters the chassis 21 through the air inlet and exchanges heat with the cold water in the coil unit 23 to cool the air; the cooled air is sent out of the chassis 21 to the room through the fan 22, so that it cools the indoor temperature.

[0132] When the fan coil unit 20 is heating, hot water enters the water inlet of the coil unit 23, and the hot water circulates in the coil unit 23. At this time, the controller 24 of the fan coil unit 20 controls the fan 22 to operate, so that air enters the chassis 21 through the air inlet and exchanges heat with the hot water in the coil unit 23 to heat the air; the heated air is sent out of the chassis 21 to the room through the fan 22, so that the indoor temperature is heated.

[0133] The temperature regulation methods generally include air volume regulation and water volume regulation. The so-called air volume regulation is to control the gear position of the fan 22 through the controller 24 of the fan coil unit 20 to control the air volume of the fan coil unit 20. Specifically, the higher the gear position of the fan 22, the greater the air volume of the fan coil unit 20, and the faster the indoor temperature drops (or rises); the lower the gear position of the fan 22, the smaller the air volume of the fan coil unit 20, and the slower the indoor temperature drops (or rises). The fan coil unit 20 controls the on / off of the fan 22 and the gear position of the fan 22 through the controller 24 to control the air volume of the fan coil unit 20.

[0134] The indoor air is circulated through the fan coil unit 20, and is cooled or heated through the coil unit 23 to maintain the indoor temperature requirement. Therefore, by controlling the air outlet speed of the fan coil unit 20, the circulation speed of the indoor air can be controlled, thereby controlling the speed of the indoor temperature reduction and increase.

[0135] It should be noted that in the embodiment of the present application, the fan coil unit can have at least the following working states: power on, power off and shutdown. Power on means that the fan coil unit is in the power-on state; shutdown means that the fan coil unit is in the power-off state; shutdown means that the temperature reaches the shutdown state, at which time the fan coil unit is in the power-on state but the fan coil unit is not turned on and the water valve is in the closed state.

[0136] Furthermore, the applicant used TRNSYS (Transient System Simulation Program) software to establish a simulation platform to verify and compare the fan coil wind speed control method in this application with the traditional fan coil wind speed control method. When the room parameters, temperature setting values, fan coil specifications, etc. are the same, the fan coil wind speed control method in this application can achieve faster adjustment speed and higher control accuracy in regulating the indoor temperature.

[0137] See next Figure 4 , Figure 4 FIG. 1 is a flow chart of a fan coil wind speed control method provided in an embodiment of the present application. Figure 4 As shown, the fan coil unit wind speed control method includes the following steps:

[0138] S401: Determine a wind speed level adjustment strategy based on historical wind speed levels.

[0139] The historical wind speed gear refers to the wind speed gear corresponding to the fan coil unit before the most recent shutdown, that is, the gear before the last temperature-reaching shutdown. For example, if the fan coil unit reaches the temperature and shuts down while operating at a medium wind gear, the historical wind speed gear will be the medium wind gear after the fan coil unit is turned on again; if the fan coil unit reaches the temperature and shuts down while operating at a low wind gear, the historical wind speed gear will be the low wind gear after the fan coil unit is turned on again. When the temperature-reaching shutdown occurs, the fan coil unit is in the on state, but the fan coil unit is not turned on and the water valve is in the closed state.

[0140] Specifically, different historical wind speed gears correspond to different wind speed gear adjustment strategies. If the historical wind speed gear is a medium wind gear, the corresponding wind speed gear adjustment strategy is a medium wind gear adjustment strategy; if the historical wind speed gear is a low wind gear, the corresponding wind speed adjustment strategy is a low wind gear adjustment strategy. The specific wind speed gear adjustment strategy will be described in detail in subsequent embodiments and will not be described in detail here.

[0141] S402: Acquire the current detected temperature, compare the current detected temperature with the limit temperature range, and obtain a temperature comparison result.

[0142] Specifically, the current detected temperature is the currently detected indoor temperature (denoted as T1 in the embodiment of the present application). The restricted temperature range is the temperature range for adjusting the wind speed gear. The restricted temperature range may include a set temperature and multiple critical temperatures. The temperature comparison result is a comparison between the current detected temperature and the set temperature or critical temperature in the restricted temperature range, and the relationship between the current detected temperature and the set temperature or critical temperature in the restricted temperature range is obtained.

[0143] S403: Based on the wind speed level adjustment strategy and using the temperature comparison result, the current wind speed level is adjusted.

[0144] Specifically, the set temperature and each critical temperature are the basis for adjusting the wind speed level. For example, when the indoor temperature is lower than a critical temperature or the set temperature, the wind speed level can be reduced, and when the indoor temperature is higher than a critical temperature, the wind speed level can be increased. How to adjust the wind speed level is the wind speed level adjustment strategy, which is related to the historical wind speed level.

[0145] S404: Control the fan coil unit using the adjusted wind speed level.

[0146] In the embodiment of the present application, the wind speed gear may include: a first gear, a second gear, a third gear and a shutdown gear. Among them, the first gear is higher than the second gear, the third gear is higher than the first gear, and the second gear is higher than the shutdown gear. The shutdown gear is the temperature shutdown. That is, the order from low to high is: shutdown gear, second gear, first gear, third gear. Exemplarily, in some possible embodiments, the first gear may be a medium wind gear, the second gear may be a low wind gear, and the third gear may be a high wind gear. The embodiment of the present application may not limit the number of wind speed gears that are not shutdown gears, that is, fewer or more wind speed gears may be included in the specific implementation. The subsequent embodiments of the present application are all described by taking the first gear as a medium wind gear, the second gear as a low wind gear, and the third gear as a high wind gear as an example.

[0147] The embodiments of the present application can determine a wind speed gear adjustment strategy based on historical wind speed gears; obtain the current detected temperature, compare the current detected temperature with the limit temperature range, and obtain a temperature comparison result; adjust the current wind speed gear based on the wind speed gear adjustment strategy and adopt the temperature comparison result. The current wind speed gear adjustment strategy can be determined based on the corresponding wind speed gear before the last shutdown. In this way, different wind speeds can be automatically matched to the corresponding load size when the room temperature reaches the set value. On the one hand, frequent switching of wind speeds due to inappropriate wind speeds can be avoided, and the temperature control accuracy can be improved, so that the fan coil unit can operate with the lowest energy consumption as much as possible. On the other hand, the overall comfort level can be improved.

[0148] In some possible embodiments, when the fan coil unit is just turned on, in order to quickly adjust the indoor temperature, after receiving the power-on command, the current wind speed level can be set to the third level (high wind level) in response to the power-on command, and then the adjustment strategy corresponding to the high wind level can be executed.

[0149] Please refer to Figure 5 . Figure 5 The flow chart of the fan coil wind speed control method when the fan coil is just turned on is shown as an example. Figure 5 As shown, the fan coil unit wind speed control method includes the following steps:

[0150] S501: In response to a power-on instruction, a first detected temperature is acquired, and the first detected temperature is compared with a limit temperature range to obtain a first temperature comparison result.

[0151] Specifically, the power-on instruction is an instruction for controlling the fan coil unit to switch from an off state to an on state.

[0152] Optionally, the power-on command may be manually input by the user, such as but not limited to a user operation input to a power-on control. The power-on control may be, for example, a button on a remote control that is compatible with the air conditioner, or a button on the air conditioner, in which case the user operation is a pressing operation. The power-on control may also be a control in an application (or applet) that is compatible with the air conditioner, in which case the user operation may be a touch operation.

[0153] Optionally, the power-on command can be input by user voice, for example, the user can issue a voice command. In some possible embodiments, the voice command is a trigger word plus a power-on command. Exemplarily, the voice command is "Xiaomei Xiaomei, please turn on the phone".

[0154] Optionally, the power-on command can be automatically triggered by a timed power-on function. For example, the user can set a timed power-on in advance, and then when the set time is reached, the air conditioner can generate a power-on command to automatically power on.

[0155] Specifically, the first detected temperature is the indoor temperature when the machine is turned on. The limited temperature range is the temperature range for adjusting the wind speed gear. The limited temperature range may include a set temperature and multiple critical temperatures. The temperature comparison result is a comparison between the first detected temperature and the set temperature or critical temperature in the limited temperature range, and the relationship between the first detected temperature and the set temperature or critical temperature in the limited temperature range is obtained.

[0156] S502: According to the first temperature comparison result, the wind speed level is set as a target level.

[0157] Specifically, the target gear may be a high wind gear, a low wind gear, or a shutdown gear.

[0158] It can be known that, generally speaking, an air conditioner can have a variety of different working modes, that is, the working modes of a fan coil unit, such as a cooling mode and a heating mode. In different working modes, the first temperature comparison result is different and the target gear is different.

[0159] In cooling mode, see Figure 6 , the limited temperature range may include: set temperature (TS), first critical temperature (TS+DT1+DT2), second critical temperature (TS-DT4), fourth critical temperature (TS+DT1+DT2+DT3). If the first temperature comparison result is that the first detected temperature is greater than the set temperature, the wind speed gear is set to the third gear, that is, the third gear is the target gear.

[0160] In cooling mode, continue to Figure 6 If the first temperature comparison result is that the first detected temperature is less than or equal to the set temperature and greater than the second critical temperature (TS-DT4), the wind speed gear is set to the first gear, that is, the first gear is the target gear.

[0161] It can be known that in the cooling mode, if the first temperature comparison result is that the first detection temperature is less than or equal to the second critical temperature (TS-DT4), the fan will not be turned on, that is, the target gear is the shutdown gear.

[0162] In heating mode, see Figure 7 The limited temperature range may at least include: a set temperature (TS), a fifth critical temperature (TS-DT1-DT2), a sixth critical temperature (TS+DT4), and an eighth critical temperature (TS-DT1-DT2-DT3).

[0163] If the first temperature comparison result is that the first detected temperature is less than the set temperature, the wind speed gear is set to the third gear, that is, the third gear is the target gear.

[0164] In heating mode, please continue to Figure 7 If the first temperature comparison result is that the first detected temperature is greater than or equal to the set temperature and less than the sixth critical temperature (TS+DT4), the wind speed gear is set to the first gear, that is, the first gear is the target gear.

[0165] It can be known that in the heating mode, if the first temperature comparison result is that the first detection temperature is greater than or equal to the sixth critical temperature (TS+DT4), the fan will not be turned on, that is, the target gear is the shutdown gear.

[0166] S503: lowering the wind speed gear to a shutdown gear using a wind speed gear adjustment strategy corresponding to the target gear.

[0167] It can be known that as the fan coil unit is running, the indoor temperature may change. The target gear may no longer match the changed indoor temperature. Therefore, in some possible scenarios, the wind speed gear may be reduced to the shutdown gear, that is, the temperature is reached and the shutdown gear is reached. However, in different working modes, different target gears correspond to different wind speed gear adjustment strategies.

[0168] See also Figure 6 and Figure 8 , in cooling mode, if the target gear is the third gear, the corresponding wind speed gear adjustment strategy is:

[0169] After the fan coil unit has been running at the third gear for a period of time (for example but not limited to 3 minutes), the second detected temperature (that is, the indoor temperature collected after the fan coil unit has been running at the third gear for a period of time) can be obtained, and the second detected temperature is compared with the limit temperature range to obtain a second temperature comparison result; if the second temperature comparison result is that the second detected temperature is lower than the set temperature in the limit temperature range, the current wind speed gear is reduced from the third gear to the first gear.

[0170] After the fan coil unit has been running at the first gear for a period of time (for example but not limited to 3 minutes), the third detected temperature can be obtained (that is, the indoor temperature collected after the fan coil unit has been running at the first gear for a period of time), and the third detected temperature is compared with the limit temperature range to obtain a third temperature comparison result; if the third temperature comparison result is that the third detected temperature is less than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the shutdown gear.

[0171] In addition, if the indoor temperature is greater than the first critical temperature (TS+DT1+DT2) within the temperature limit range after the fan coil unit has been running at the first gear for a period of time (for example but not limited to 3 minutes), the current wind speed can be increased from the first gear to the third gear.

[0172] See also Figure 6 and Fig. 9 , in cooling mode, if the target gear is the first gear, the corresponding wind speed gear adjustment strategy is:

[0173] After the fan coil unit has been running at the first gear for a period of time (for example but not limited to 3 minutes), the fourth detected temperature (that is, the indoor temperature collected after the fan coil unit has been running at the first gear for a period of time) can be obtained, and the fourth detected temperature is compared with the limit temperature range to obtain a fourth temperature comparison result; if the fourth temperature comparison result is that the fourth detected temperature is lower than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear.

[0174] After the fan coil unit has been running at the second gear for a period of time (for example but not limited to 3 minutes), the fifth detected temperature can be obtained (that is, the indoor temperature collected after the fan coil unit has been running at the second gear for a period of time), and the fifth detected temperature is compared with the limit temperature range to obtain a fifth temperature comparison result; if the fifth temperature comparison result is that the fifth detected temperature is less than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear.

[0175] In addition, after the fan coil unit runs at the first gear for a period of time (for example but not limited to 3 minutes), if the previous wind speed gear was the second gear and the indoor temperature is greater than the fourth critical temperature (TS+DT1+DT2+DT3) within the temperature limit range, the current wind speed gear can be increased from the first gear to the third gear.

[0176] After the fan coil unit runs at the first gear for a period of time (for example but not limited to 3 minutes), if the previous wind speed gear is not the second gear, and the indoor temperature is greater than the first critical temperature (TS+DT1+DT2) within the temperature limit range, the current wind speed gear can be increased from the first gear to the third gear.

[0177] In addition, after the fan coil unit runs at the second gear for a period of time (for example but not limited to 3 minutes), if the indoor temperature is greater than the first critical temperature (TS+DT1+DT2) within the temperature limit range, the current wind speed can be increased from the second gear to the first gear.

[0178] See also Figure 7 and Fig.10 , in heating mode, if the target gear is the third gear, the corresponding wind speed gear adjustment strategy is:

[0179] After the fan coil unit has been running at the third gear for a period of time (for example but not limited to 3 minutes), the sixth detected temperature (that is, the indoor temperature collected after the fan coil unit has been running at the third gear for a period of time) can be obtained, and the sixth detected temperature is compared with the limit temperature range to obtain a sixth temperature comparison result; if the sixth temperature comparison result is that the sixth detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the third gear to the first gear.

[0180] After the fan coil unit has been running at the first gear for a period of time (for example but not limited to 3 minutes), the seventh detection temperature can be obtained (that is, the indoor temperature collected after the fan coil unit has been running at the first gear for a period of time), and the seventh detection temperature is compared with the limit temperature range to obtain the seventh temperature comparison result; if the seventh temperature comparison result is that the seventh detection temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the shutdown gear.

[0181] In addition, if the indoor temperature is lower than the fifth critical temperature (TS-DT1-DT2) within the temperature limit range after the fan coil unit has been running at the first gear for a period of time (for example but not limited to 3 minutes), the current wind speed can be increased from the first gear to the third gear.

[0182] See also Figure 7 and Fig.11 , in heating mode, if the target gear is the first gear, the corresponding wind speed gear adjustment strategy is:

[0183] After the fan coil unit has been running at the first gear for a period of time (for example but not limited to 3 minutes), the eighth detected temperature can be obtained (that is, the indoor temperature collected after the fan coil unit has been running at the first gear for a period of time), and the eighth detected temperature is compared with the limit temperature range to obtain the eighth temperature comparison result; if the eighth temperature comparison result is that the eighth detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear.

[0184] After the fan coil unit has been running at the second gear for a period of time (for example but not limited to 3 minutes), the ninth detection temperature can be obtained (that is, the indoor temperature collected after the fan coil unit has been running at the second gear for a period of time), and the ninth detection temperature is compared with the limit temperature range to obtain a ninth temperature comparison result; if the ninth temperature comparison result is that the ninth detection temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear.

[0185] In addition, after the fan coil unit runs at the first gear for a period of time (for example but not limited to 3 minutes), if the previous wind speed gear was the third gear and the indoor temperature is lower than the eighth critical temperature (TS-DT1-DT2-DT3) within the temperature limit range, the current wind speed gear can be increased from the first gear to the third gear.

[0186] After the fan coil unit runs at the first gear for a period of time (for example but not limited to 3 minutes), if the previous wind speed gear is not the third gear and the indoor temperature is lower than the fifth critical temperature (TS-DT1-DT2) within the temperature limit range, the current wind speed gear can be increased from the first gear to the third gear.

[0187] In addition, after the fan coil unit runs at the second gear for a period of time (for example but not limited to 3 minutes), if the indoor temperature is lower than the fifth critical temperature (TS-DT1-DT2) within the temperature limit range, the current wind speed can be increased from the second gear to the first gear.

[0188] From the above wind speed gear adjustment strategy, it can be seen that in order to quickly adjust the indoor temperature, the current wind speed gear can be set as the target gear according to the detected indoor temperature when the machine is just turned on. The critical temperature of the target gear is different from the critical temperature after the machine is turned on. Specifically, in cooling mode, the critical temperature of the target gear is lower, which can quickly lower the indoor temperature; and in heating mode, the critical temperature of the target gear is higher, which can quickly increase the indoor temperature and shorten the temperature response time.

[0189] S504: Determine a wind speed level adjustment strategy based on historical wind speed levels.

[0190] Specifically, after the current wind speed level is adjusted from the first level or the second level to the shutdown level (i.e., shutdown due to reaching the temperature), if it is detected that the indoor temperature meets the conditions for turning on again, the wind speed level (the first level or the second level) before the shutdown due to reaching the temperature is the historical wind speed level.

[0191] Specifically, S504 is consistent with S401 and will not be described in detail here.

[0192] S505: Acquire the current detected temperature, compare the current detected temperature with the limit temperature range, and obtain a temperature comparison result.

[0193] Specifically, S505 is consistent with S402 and will not be described in detail here.

[0194] S506: Adjust the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result.

[0195] Specifically, S506 is consistent with S403 and will not be described in detail here.

[0196] S507: Control the fan coil unit using the adjusted wind speed level.

[0197] Specifically, S507 is consistent with S404 and will not be described in detail here.

[0198] In the embodiment of the present application, in order to quickly adjust the indoor temperature, the current wind speed gear can be set as the target gear according to the detected indoor temperature when the machine is just turned on. The critical temperature of the target gear is different from the critical temperature after the machine is turned on. Specifically, the critical temperature of the target gear is lower in the cooling mode, so that the indoor temperature can be quickly reduced; while the critical temperature of the target gear is higher in the heating mode, so that the indoor temperature can be quickly increased and the temperature response time can be shortened. In addition, by determining the wind speed gear adjustment strategy based on the historical wind speed gear; obtaining the current detected temperature, comparing the current detected temperature with the limit temperature range, and obtaining the temperature comparison result; adjusting the current wind speed gear based on the wind speed gear adjustment strategy and using the temperature comparison result, the current wind speed gear adjustment strategy can be determined based on the corresponding wind speed gear before the last shutdown, so that the corresponding load size can be automatically matched with different wind gears when the room temperature reaches the set value. On the one hand, it avoids frequent switching of wind gears due to inappropriate wind gears, which can improve the temperature control accuracy, so that the fan coil unit can operate with the minimum energy consumption as much as possible, and on the other hand, it can improve the overall comfort level.

[0199] As mentioned above, the air conditioner can have a variety of different working modes, that is, the working modes of the fan coil unit. For example, cooling mode and heating mode. Then, the following embodiments will introduce different wind speed level adjustment strategies in cooling mode and different wind speed level adjustment strategies in heating mode respectively.

[0200] Specifically, when the working mode of the fan coil unit is cooling mode, the limit temperature range may at least include: set temperature (TS), first critical temperature (TS+DT1+DT2), second critical temperature (TS-DT4), third critical temperature (TS+DT1), and fourth critical temperature (TS+DT1+DT2+DT3).

[0201] The above S403: adjusting the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result may specifically include the following situations:

[0202] Case 1: If the temperature comparison result shows that the current detected temperature is lower than the set temperature (TS) in the limit temperature range, the current wind speed level is reduced. That is, in cooling mode, when the indoor temperature drops to the set temperature (TS), it means that the current wind speed level is sufficient to match the indoor load. In order to save energy, the current wind speed level can be reduced.

[0203] Case 2: If the temperature comparison result is that the current detected temperature is greater than the first critical temperature (TS+DT1+DT2) in the limit temperature range, the current wind speed gear is increased. Among them, the first critical temperature (TS+DT1+DT2) is greater than the set temperature (TS). That is, in cooling mode, when the indoor temperature rises to the first critical temperature (TS+DT1+DT2), it means that the current wind speed gear is not enough to match the indoor load. In order to reduce the indoor temperature and improve the comfort level of indoor users, the current wind speed gear can be increased.

[0204] Case 3: If the temperature comparison result shows that the current detected temperature is lower than the second critical temperature (TS-DT4) in the limit temperature range, the current wind speed gear is adjusted to the shutdown gear. Among them, the second critical temperature (TS-DT4) is lower than the set temperature (TS). That is, in the cooling mode, when the indoor temperature drops to the second critical temperature (TS-DT4), it means that the current indoor temperature is low enough. In order to save energy, the current wind speed gear can be adjusted to the shutdown gear, that is, the temperature is reached and the gear is shut down.

[0205] In some possible embodiments, after the temperature is reached and the machine is shut down, the current wind speed gear can be updated to the historical wind speed gear. For example, in the above three situations, if the current wind speed gear is the medium wind gear, after the current wind speed gear is adjusted to the shutdown gear, the medium wind gear can be used to update the historical wind speed gear, that is, the updated historical wind speed gear is the medium wind gear. If the current wind speed gear is the low wind gear, after the current wind speed gear is adjusted to the shutdown gear, the low wind gear can be used to update the historical wind speed gear, that is, the updated historical wind speed gear is the low wind gear. After updating the historical wind speed gear, if the indoor temperature rises again and rises to the third critical temperature (TS+DT1), the fan coil unit needs to be turned on again at this time, and the above shutdown gear is adjusted to the updated historical wind speed gear. That is, the wind speed gear when the fan coil unit is turned on again is consistent with the wind speed gear before the temperature is reached and the shutdown is performed, so that the automatic tracking and matching of the fan coil unit wind speed gear and the indoor load can be achieved. The third critical temperature (TS+DT1) is greater than the set temperature (TS) and less than the first critical temperature (TS+DT1+DT2).

[0206] When the room temperature rises again and reaches the third critical temperature (TS+DT1), if the historical wind speed gear is the first gear, the medium wind speed adjustment strategy in the cooling mode is executed.

[0207] Figure 12-13 The schematic diagram of the medium-speed adjustment strategy in the cooling mode is exemplified.

[0208] like Figure 12-13 As shown, if the current wind speed gear is the medium wind gear, and the temperature comparison result is that the current detected temperature is less than the set temperature (TS) in the limit temperature range, the current wind speed gear is reduced from the first gear (medium wind gear) to the second gear (low wind gear). If the current wind speed gear is the medium wind gear, and the temperature comparison result is that the current detected temperature is greater than or equal to the set temperature (TS) in the limit temperature range, the temperature is continued to be compared, and it is determined whether the previous wind speed gear is the second gear (low wind gear). If the previous wind speed gear is the second gear (low wind gear), then when the temperature comparison result is that the current detected temperature is greater than the fourth critical temperature (TS+DT1+DT2+DT3), the current wind speed gear is increased from the first gear (medium wind gear) to the third gear (high wind gear). If the previous wind speed gear is not the second gear (low wind gear), when the temperature comparison result is that the current detected temperature is greater than the first critical temperature (TS+DT1+DT2), the current wind speed gear is increased from the first gear (medium wind gear) to the third gear (high wind gear). Otherwise, the current wind speed gear is maintained at the first gear (medium wind gear).

[0209] If the current wind speed gear is low wind gear, and the temperature comparison result is that the current detection temperature is less than the second critical temperature (TS-DT4), the current wind speed gear is adjusted from the second gear (low wind gear) to the shutdown gear, that is, shutdown. If the temperature comparison result is that the current detection temperature is greater than the first critical temperature (TS+DT1+DT2), the current wind speed gear is increased from the second gear (low wind gear) to the first gear (medium wind gear). Otherwise, maintain the current wind speed gear at the second gear (low wind gear).

[0210] If the current wind speed gear is high, and the temperature comparison result shows that the current detected temperature is lower than the set temperature (TS) in the limit temperature range, the current wind speed gear is reduced from the third gear (high) to the first gear (medium). Otherwise, the current wind speed gear is maintained at the third gear (high).

[0211] Figure 14-15 The schematic diagram of the low wind speed adjustment strategy in the cooling mode is exemplified.

[0212] like Figure 14-15As shown, if the current wind speed gear is the medium wind gear, and the temperature comparison result is that the current detected temperature is less than the set temperature (TS), the current wind speed gear is reduced from the first gear (medium wind gear) to the second gear (low wind gear). If the temperature comparison result is that the current detected temperature is greater than the fourth critical temperature (TS+DT1+DT2+DT3), the current wind speed gear is increased from the first gear (medium wind gear) to the third gear (high wind gear). Otherwise, the current wind speed gear is maintained at the first gear (medium wind gear).

[0213] If the current wind speed gear is low wind gear, and the temperature comparison result is that the current detection temperature is less than the second critical temperature (TS-DT4), the current wind speed gear is adjusted from the second gear (low wind gear) to the shutdown gear, that is, shutdown. If the temperature comparison result is that the current detection temperature is greater than the first critical temperature (TS+DT1+DT2), the current wind speed gear is increased from the second gear (low wind gear) to the first gear (medium wind gear). Otherwise, maintain the current wind speed gear at the second gear (low wind gear).

[0214] If the current wind speed gear is high, and the temperature comparison result shows that the current detected temperature is lower than the set temperature (TS) in the limit temperature range, the current wind speed gear is reduced from the third gear (high) to the first gear (medium). Otherwise, the current wind speed gear is maintained at the third gear (high).

[0215] Specifically, when the fan coil unit is in heating mode, the limit temperature range may at least include: set temperature (TS), fifth critical temperature (TS-DT1-DT2), sixth critical temperature (TS+DT4), seventh critical temperature (TS-DT1), and eighth critical temperature (TS-DT1-DT2-DT3).

[0216] The above S403: adjusting the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result may specifically include the following situations:

[0217] Case 1: If the temperature comparison result shows that the current detected temperature is greater than the set temperature (TS) in the limit temperature range, the current wind speed level is reduced. That is, in heating mode, when the indoor temperature rises to the set temperature (TS), it means that the current wind speed level is sufficient to match the indoor load. In order to save energy, the current wind speed level can be reduced.

[0218] Case 2: If the temperature comparison result is that the current detected temperature is less than the fifth critical temperature (TS-DT1-DT2) in the limit temperature range, the current wind speed gear is increased. Among them, the fifth critical temperature (TS-DT1-DT2) is less than the set temperature (TS). That is, in the heating mode, when the indoor temperature drops to the fifth critical temperature (TS-DT1-DT2), it means that the current wind speed gear is not enough to match the indoor load. In order to increase the indoor temperature and improve the comfort level of indoor users, the current wind speed gear can be increased.

[0219] Case 3: If the temperature comparison result shows that the current detected temperature is greater than the sixth critical temperature (TS+DT4) in the limit temperature range, the current wind speed gear is adjusted to the shutdown gear. Among them, the sixth critical temperature (TS+DT4) is greater than the set temperature (TS). That is, in the heating mode, when the indoor temperature rises to the sixth critical temperature (TS+DT4), it means that the current indoor temperature is high enough. In order to save energy consumption, the current wind speed gear can be adjusted to the shutdown gear, that is, the temperature is reached and the shutdown is performed.

[0220] In some possible embodiments, after the temperature is reached and the machine is shut down, the current wind speed gear can be updated to the historical wind speed gear. For example, in the above three situations, if the current wind speed gear is the medium wind gear, after the current wind speed gear is adjusted to the shutdown gear, the medium wind gear can be used to update the historical wind speed gear, that is, the updated historical wind speed gear is the medium wind gear. If the current wind speed gear is the low wind gear, after the current wind speed gear is adjusted to the shutdown gear, the low wind gear can be used to update the historical wind speed gear, that is, the updated historical wind speed gear is the low wind gear. After updating the historical wind speed gear, if the indoor temperature drops again and drops to the seventh critical temperature (TS-DT1), the fan coil unit needs to be turned on again at this time, and the above shutdown gear is adjusted to the updated historical wind speed gear. That is, the wind speed gear when the fan coil unit is turned on again is consistent with the wind speed gear before the temperature is reached and the shutdown is performed, so that the fan coil unit wind speed gear and the indoor load can be automatically tracked and matched. The seventh critical temperature (TS-DT1) is lower than the set temperature (TS) and higher than the first critical temperature (TS-DT1-DT2).

[0221] Figure 16-Figure 17 The schematic diagram of the medium-speed adjustment strategy in the heating mode is exemplified.

[0222] like Figure 16-Figure 17As shown, if the current wind speed gear is the medium wind gear, and the temperature comparison result is that the current detected temperature is greater than the set temperature (TS) in the limit temperature range, the current wind speed gear is reduced from the first gear (medium wind gear) to the second gear (low wind gear). If the current wind speed gear is the medium wind gear, and the temperature comparison result is that the current detected temperature is less than or equal to the set temperature (TS) in the limit temperature range, the temperature is continued to be compared, and it is determined whether the previous wind speed gear is the second gear (low wind gear). If the previous wind speed gear is the second gear (low wind gear), when the temperature comparison result is that the current detected temperature is less than the eighth critical temperature (TS-DT1-DT2-DT3), the current wind speed gear is increased from the first gear (medium wind gear) to the third gear (high wind gear). If the previous wind speed gear is not the second gear (low wind gear), when the temperature comparison result is that the current detection temperature is less than the fifth critical temperature (TS-DT1-DT2), the current wind speed gear is increased from the first gear (medium wind gear) to the third gear (high wind gear). Otherwise, the current wind speed gear is maintained at the first gear (medium wind gear).

[0223] If the current wind speed gear is low wind gear, and the temperature comparison result is that the current detection temperature is greater than the sixth critical temperature (TS+DT4), the current wind speed gear is adjusted from the second gear (low wind gear) to the shutdown gear, that is, shutdown. If the temperature comparison result is that the current detection temperature is less than the fifth critical temperature (TS-DT1-DT2), the current wind speed gear is increased from the second gear (low wind gear) to the first gear (medium wind gear). Otherwise, maintain the current wind speed gear at the second gear (low wind gear).

[0224] If the current wind speed gear is high, and the temperature comparison result shows that the current detected temperature is greater than the set temperature (TS) in the limit temperature range, the current wind speed gear is reduced from the third gear (high) to the first gear (medium). Otherwise, the current wind speed gear is maintained at the third gear (high).

[0225] Figure 18-19 The schematic diagram of the low wind speed adjustment strategy in the cooling mode is exemplified.

[0226] like Figure 18-19 As shown, if the current wind speed gear is the medium wind gear, and the temperature comparison result is that the current detected temperature is greater than the set temperature (TS), the current wind speed gear is reduced from the first gear (medium wind gear) to the second gear (low wind gear). If the temperature comparison result is that the current detected temperature is less than the eighth critical temperature (TS-DT1-DT2-DT3), the current wind speed gear is increased from the first gear (medium wind gear) to the third gear (high wind gear). Otherwise, the current wind speed gear is maintained at the first gear (medium wind gear).

[0227] If the current wind speed gear is low wind gear, and the temperature comparison result is that the current detection temperature is greater than the sixth critical temperature (TS+DT4), the current wind speed gear is adjusted from the second gear (low wind gear) to the shutdown gear, that is, shutdown. If the temperature comparison result is that the current detection temperature is less than the fifth critical temperature (TS-DT1-DT2), the current wind speed gear is increased from the second gear (low wind gear) to the first gear (medium wind gear). Otherwise, maintain the current wind speed gear at the second gear (low wind gear).

[0228] If the current wind speed gear is high, and the temperature comparison result shows that the current detected temperature is greater than the set temperature (TS) in the limit temperature range, the current wind speed gear is reduced from the third gear (high) to the first gear (medium). Otherwise, the current wind speed gear is maintained at the third gear (high).

[0229] Fig. 20 The schematic diagram of the overall wind speed adjustment strategy of the fan coil unit in the cooling mode is shown as an example. Fig. 20 As shown, after starting up, the current indoor temperature can be detected. If the current indoor temperature exceeds the set temperature TS, the high wind gear is used for operation, and the wind speed gear adjustment strategy corresponding to the high wind gear is executed ( Figure 8 ), when the indoor temperature is lower than the second critical temperature (TS-DT4), it switches from the medium wind gear to the shutdown state; if the current indoor temperature exceeds the second critical temperature but does not exceed the set temperature, it runs at the medium wind gear and executes the wind speed gear adjustment strategy corresponding to the medium wind gear ( Fig. 9 ), when the indoor temperature is lower than the second critical temperature (TS-DT4), the fan is switched from low wind speed to shutdown state. If the current indoor temperature does not exceed the second critical temperature, the fan will not turn on.

[0230] After reaching the temperature and stopping, when the indoor temperature rises again and exceeds the third critical temperature (TS+DT1), the fan will start running again at the wind speed level before reaching the temperature and stop, and execute the corresponding wind speed adjustment strategy. If the wind speed level before reaching the temperature and stopping is the medium wind level, the wind speed adjustment strategy corresponding to the medium wind level will be executed after reaching the temperature and stopping and restarting ( Figure 12-13 ). If the wind speed level before the temperature-reaching shutdown is low, the wind speed level adjustment strategy corresponding to the low wind level will be executed after the temperature-reaching shutdown and restart ( Figure 14-15 ).

[0231] Fig.21 The schematic diagram of the overall wind speed adjustment strategy of the fan coil unit in the heating mode is shown as an example. Fig.21 As shown, after starting up, the current indoor temperature can be detected. If the current indoor temperature is lower than the set temperature, the high wind gear is used for operation, and the wind speed gear adjustment strategy corresponding to the high wind gear is executed ( Fig.10), when the indoor temperature is higher than the sixth critical temperature (TS+DT4), the machine switches from the medium wind gear to the shutdown state; if the current indoor temperature is not higher than the sixth critical temperature but not lower than the set temperature, the machine runs at the medium wind gear and executes the wind speed gear adjustment strategy corresponding to the medium wind gear ( Fig.11 ), when the indoor temperature is higher than the sixth critical temperature (TS+DT4), the fan is switched from low wind speed to shutdown state. If the current indoor temperature exceeds the sixth critical temperature, the fan will not be turned on.

[0232] After reaching the temperature and stopping, when the indoor temperature drops again and is lower than the seventh critical temperature (TS-DT1), the fan will start running again at the wind speed level before reaching the temperature and stop, and execute the corresponding wind speed adjustment strategy. If the wind speed level before reaching the temperature and stopping is the medium wind level, the wind speed adjustment strategy corresponding to the medium wind level will be executed after reaching the temperature and stopping and restarting ( Figure 16-Figure 17 ). If the wind speed level before the temperature-reaching shutdown is low, the wind speed level adjustment strategy corresponding to the low wind level will be executed after the temperature-reaching shutdown and restart ( Figure 18-19 ).

[0233] In the embodiment of the present application, in order to quickly adjust the indoor temperature, the current wind speed gear can be set as the target gear according to the detected indoor temperature when the machine is just turned on. The critical temperature of the target gear is different from the critical temperature after the machine is turned on. Specifically, the critical temperature of the target gear is lower in the cooling mode, so that the indoor temperature can be quickly reduced; while the critical temperature of the target gear is higher in the heating mode, so that the indoor temperature can be quickly increased and the temperature response time can be shortened. In addition, by determining the wind speed gear adjustment strategy based on the historical wind speed gear; obtaining the current detected temperature, comparing the current detected temperature with the limit temperature range, and obtaining the temperature comparison result; adjusting the current wind speed gear based on the wind speed gear adjustment strategy and using the temperature comparison result, the current wind speed gear adjustment strategy can be determined based on the corresponding wind speed gear before the last shutdown, so that the corresponding load size can be automatically matched with different wind gears when the room temperature reaches the set value. On the one hand, it avoids frequent switching of wind gears due to inappropriate wind gears, which can improve the temperature control accuracy, so that the fan coil unit can operate with the minimum energy consumption as much as possible, and on the other hand, it can improve the overall comfort level.

[0234] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0235] The fan coil wind speed control method can be set in different deployment modes. Specifically, the fan coil units will be placed in different rooms as terminal devices. Different rooms have different requirements for cooling (or heating) temperature. In order to enable the temperature of each room to be controlled individually, the fan coil wind speed control method can be embedded in the edge controller of the fan coil unit in each room. The edge controller adjusts the gear position of the fan coil unit in the corresponding room in time according to the changes in the indoor temperature, so as to make timely adjustments to the indoor temperature and improve the user's comfort level.

[0236] The fan coil wind speed control method can also be deployed on a local host computer. The operating data of the fan coil corresponding to each room is reported to the centralized controller by the temperature regulator in wireless or wired form. The centralized controller transmits the data to the local host computer, and the local host computer saves the data. The fan coil wind speed control method deployed on the local host computer adjusts the gear of the fan coil corresponding to each room by reading the data. The gear adjustment strategy of each fan coil is issued to the temperature regulator of the corresponding fan coil through the centralized controller to achieve timely adjustment of the wind speed gear in the fan coil, and timely adjustment of the indoor temperature, thereby improving the user's comfort level.

[0237] The fan coil wind speed control method can also be deployed on a cloud server. The fan coil corresponding to each room is connected to a corresponding wireless temperature regulator, and the wireless temperature regulator transmits the real-time operation data and parameters of the fan coil to the gateway via wireless transmission (the wireless transmission method may include Bluetooth communication link, Wi-Fi, communication link or microwave communication, etc.), and the gateway uploads the real-time operation data and parameters of all fan coils (all fan coils including the fan coil corresponding to each room) to the cloud server, and the cloud server saves the real-time operation data and parameters.

[0238] The fan coil wind speed control method is deployed on the cloud server. The temperature regulator corresponding to each fan coil accesses the cloud server data in real time, and the gear adjustment command output by the cloud server data is sent to the gateway, and the gateway sends it to the corresponding fan coil wireless temperature regulator, so as to realize the timely adjustment of the fan coil operation gear and improve the user's comfort level.

[0239] See also Fig. 22 , Fig. 22 A schematic diagram of the structure of a fan coil wind speed control device provided in an embodiment of the present application; Fig. 22 As shown, the fan coil wind speed control device 220 includes:

[0240] The determination module 2210 is used to determine the wind speed gear adjustment strategy based on the historical wind speed gear; wherein the historical wind speed gear refers to the wind speed gear corresponding to the fan coil unit before the most recent shutdown;

[0241] A comparison module 2220 is used to obtain a current detection temperature, compare the current detection temperature with a limit temperature range, and obtain a temperature comparison result;

[0242] An adjustment module 2230, configured to adjust the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result;

[0243] The control module 2240 is used to control the fan coil unit using the adjusted wind speed level.

[0244] In some embodiments, the fan coil unit operates in a cooling mode;

[0245] The adjustment module 2230 includes:

[0246] A first adjustment unit, configured to reduce the current wind speed level if the temperature comparison result shows that the current detected temperature is lower than the set temperature in the limit temperature range;

[0247] A second adjustment unit is used to increase the current wind speed level if the temperature comparison result is that the current detected temperature is greater than a first critical temperature in the limit temperature range; the first critical temperature is greater than the set temperature;

[0248] The third adjustment unit is used to adjust the current wind speed gear to the shutdown gear if the temperature comparison result is that the current detected temperature is lower than the second critical temperature in the limit temperature range.

[0249] In some embodiments, the fan coil unit wind speed control device 220 further includes:

[0250] A first updating module, configured to update the historical wind speed level with the current wind speed level;

[0251] The adjustment module 2230 is also used to: if the temperature comparison result is that the current detected temperature is greater than the third critical temperature, adjust the shutdown gear to the updated historical wind speed gear, and the third critical temperature is greater than the set temperature and less than the first critical temperature.

[0252] In some embodiments, the first adjustment unit is specifically configured to: if the temperature comparison result is that the current detected temperature is less than the set temperature in the limit temperature range, then reduce the current wind speed gear from the first gear to the second gear, or reduce the current wind speed gear from the third gear to the first gear;

[0253] A second adjustment unit is specifically configured to: if the temperature comparison result is that the current detected temperature is greater than a first critical temperature in the limit temperature range, increase the current wind speed gear from the second gear to the first gear;

[0254] The third adjustment unit is specifically used to: if the temperature comparison result is that the current detected temperature is lower than the second critical temperature in the limit temperature range, adjust the current wind speed gear from the second gear to the shutdown gear; the shutdown gear is lower than the second gear.

[0255] In some embodiments, the historical wind speed gear is the first gear; the adjustment module 2230 further includes:

[0256] The fourth adjustment unit is used to adjust the current wind speed gear from the first gear to the third gear if the current wind speed gear is the first gear and the previous wind speed gear is the second gear, and the temperature comparison result is that the current detected temperature is greater than the fourth critical temperature in the limit temperature range; the fourth critical temperature is greater than the first critical temperature.

[0257] In some embodiments, the historical wind speed gear is the first gear;

[0258] The second adjustment unit is specifically used to: if the current wind speed gear is the first gear, and the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, then increase the current wind speed gear from the first gear to the third gear.

[0259] In some embodiments, the historical wind speed gear is the second gear; the adjustment module 2230 further includes:

[0260] The fifth adjustment unit is used to adjust the current wind speed gear from the first gear to the third gear if the temperature comparison result is that the current detected temperature is greater than the fourth critical temperature in the limit temperature range; the fourth critical temperature is greater than the first critical temperature.

[0261] In some embodiments, the fan coil unit operates in a heating mode;

[0262] The adjustment module 2230 includes:

[0263] A sixth adjustment unit, configured to reduce the current wind speed level if the temperature comparison result shows that the current detected temperature is greater than the set temperature in the limit temperature range;

[0264] A seventh adjustment unit, configured to increase the current wind speed level if the temperature comparison result shows that the current detected temperature is lower than a fifth critical temperature in the limit temperature range; the fifth critical temperature is lower than the set temperature;

[0265] The eighth adjustment unit is used to adjust the current wind speed gear to the shutdown gear if the temperature comparison result is that the current detected temperature is greater than the sixth critical temperature in the limit temperature range; the sixth critical temperature is greater than the set temperature.

[0266] In some embodiments, the fan coil unit wind speed control device 220 further includes:

[0267] A second updating module, configured to update the historical wind speed level with the current wind speed level;

[0268] The adjustment module 2230 is also used to: if the temperature comparison result is that the current detected temperature is lower than the seventh critical temperature, adjust the shutdown gear to the updated historical wind speed gear, and the seventh critical temperature is lower than the set temperature and higher than the fifth critical temperature.

[0269] In some embodiments, the sixth adjustment unit is specifically configured to: if the temperature comparison result is that the current detected temperature is greater than the set temperature in the limit temperature range, reduce the current wind speed gear from the first gear to the second gear, or reduce the current wind speed gear from the third gear to the first gear;

[0270] a seventh adjustment unit, specifically configured to: if the temperature comparison result is that the current detected temperature is less than the fifth critical temperature in the limit temperature range, increase the current wind speed gear from the second gear to the first gear;

[0271] The eighth adjustment unit is specifically used to: if the temperature comparison result is that the current detected temperature is greater than the sixth critical temperature in the limit temperature range, adjust the current wind speed gear from the second gear to the shutdown gear; the shutdown gear is lower than the second gear.

[0272] In some embodiments, the historical wind speed gear is the first gear; the adjustment module 2230 further includes:

[0273] The ninth adjustment unit is used to adjust the current wind speed gear from the first gear to the third gear if the current wind speed gear is the first gear, and the previous wind speed gear is the second gear, and the temperature comparison result is that the current detected temperature is lower than the eighth critical temperature in the limit temperature range; the eighth critical temperature is lower than the fifth critical temperature.

[0274] In some embodiments, the historical wind speed gear is the first gear;

[0275] The seventh adjustment unit is specifically used to: if the current wind speed gear is the first gear, and the temperature comparison result is that the current detected temperature is less than the fifth critical temperature in the limit temperature range, then increase the current wind speed gear from the first gear to the third gear.

[0276] In some embodiments, the historical wind speed gear is the second gear; the adjustment module 2230 further includes:

[0277] The tenth adjustment unit is used to adjust the current wind speed gear from the first gear to the third gear if the temperature comparison result is that the current detected temperature is greater than the eighth critical temperature in the limit temperature range; the eighth critical temperature is less than the fifth critical temperature.

[0278] In some embodiments, the fan coil unit wind speed control device 220 further includes:

[0279] The comparison module 2220 is further configured to obtain a first detected temperature in response to a power-on instruction, and compare the first detected temperature with a limit temperature range to obtain a first temperature comparison result;

[0280] A setting module, used for setting the wind speed gear to a target gear according to the first temperature comparison result;

[0281] The downshift module is used to reduce the wind speed gear to the shutdown gear by adopting a wind speed gear adjustment strategy corresponding to the target gear.

[0282] In some embodiments, the fan coil unit operates in a cooling mode;

[0283] Setting module, specifically used for:

[0284] If the first temperature comparison result is that the first detected temperature is greater than the set temperature, the wind speed gear is set to the third gear, and the third gear is the target gear;

[0285] If the first temperature comparison result is that the first detected temperature is less than or equal to the set temperature and greater than the second critical temperature, the wind speed gear is set to the first gear, and the first gear is the target gear.

[0286] In some embodiments, the third gear is the target gear;

[0287] Downshift module, specifically used for:

[0288] Acquire a second detected temperature, compare the second detected temperature with the limit temperature range, and obtain a second temperature comparison result;

[0289] If the second temperature comparison result is that the second detected temperature is lower than the set temperature in the limit temperature range, reducing the current wind speed gear from the third gear to the first gear;

[0290] Acquire a third detected temperature, compare the third detected temperature with the limit temperature range, and obtain a third temperature comparison result;

[0291] If the third temperature comparison result is that the third detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the shutdown gear.

[0292] In some embodiments, the first gear is the target gear;

[0293] Downshift module, specifically used for:

[0294] Acquire a fourth detected temperature, compare the fourth detected temperature with the limit temperature range, and obtain a fourth temperature comparison result;

[0295] If the fourth temperature comparison result is that the fourth detected temperature is lower than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear;

[0296] Acquire a fifth detected temperature, compare the fifth detected temperature with the limit temperature range, and obtain a fifth temperature comparison result;

[0297] If the fifth temperature comparison result is that the fifth detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear.

[0298] In some embodiments, the fan coil unit operates in a heating mode;

[0299] Setting module, specifically used for:

[0300] If the first temperature comparison result is that the first detected temperature is less than the set temperature, the wind speed gear is set to the third gear, and the third gear is the target gear;

[0301] If the first temperature comparison result is that the first detected temperature is greater than or equal to the set temperature and less than the sixth critical temperature, the wind speed gear is set to the first gear, and the first gear is the target gear.

[0302] In some embodiments, the third gear is the target gear;

[0303] Downshift module, specifically used for:

[0304] Acquire a sixth detected temperature, compare the sixth detected temperature with the limit temperature range, and obtain a sixth temperature comparison result;

[0305] If the sixth temperature comparison result is that the sixth detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the third gear to the first gear;

[0306] Acquire a seventh detected temperature, compare the seventh detected temperature with the limit temperature range, and obtain a seventh temperature comparison result;

[0307] If the seventh temperature comparison result is that the seventh detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the shutdown gear.

[0308] In some embodiments, the first gear is the target gear;

[0309] Downshift module, specifically used for:

[0310] Acquiring an eighth detected temperature, comparing the eighth detected temperature with the limit temperature range, and obtaining an eighth temperature comparison result;

[0311] If the eighth temperature comparison result is that the eighth detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear;

[0312] Acquire a ninth detected temperature, compare the ninth detected temperature with the limit temperature range, and obtain a ninth temperature comparison result;

[0313] If the ninth temperature comparison result is that the ninth detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear.

[0314] The fan coil unit wind speed control device provided in the present application is used to implement the fan coil unit wind speed control method. The implementation solution provided by the fan coil unit wind speed control device to solve the problem is similar to the implementation solution recorded in the above method. Therefore, the specific limitations in the embodiments corresponding to the fan coil unit wind speed control device can be found in the above limitations on the fan coil unit wind speed control method, which will not be repeated here.

[0315] Each module in the fan coil wind speed control device can be implemented in whole or in part by software, hardware, or a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0316] An embodiment of the present application further provides a computer program product, which includes: a computer program code, when the computer program code is run on a computer, the computer executes a fan coil wind speed control method in the above embodiment.

[0317] An embodiment of the present application also provides a computer-readable storage medium, which stores computer program code. When the computer program is executed, a fan coil wind speed control method in the above embodiment is implemented.

[0318] Fig.23 It is a structural schematic diagram of an air conditioner provided in an embodiment of the present application.

[0319] For example, Fig.23 As shown, the air conditioner 2300 includes: a memory 2310 and a processor 2320, wherein the memory 2310 stores an executable program code 2311, and the processor 2320 is used to call and execute the executable program code 2311 to perform the fan coil wind speed control method.

[0320] In this embodiment, the air conditioner can be divided into functional modules according to the above method example. For example, each functional module can be corresponded, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0321] In the case of dividing each functional module according to each function, the air conditioner may include: a determination module, a comparison module, an adjustment module, a control module, etc. It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, which will not be repeated here.

[0322] The air conditioner provided in this embodiment is used to execute the above-mentioned fan coil wind speed control method, and thus can achieve the same effect as the above-mentioned implementation method.

[0323] In the case of an integrated unit, the air conditioner may include a processing module and a storage module. The processing module may be used to control and manage the actions of the air conditioner. The storage module may be used to support the air conditioner in executing mutual program codes and data.

[0324] The processing module may be a processor or a controller, which may implement or execute various exemplary logic blocks, modules and circuits disclosed in the present application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module may be a memory.

[0325] In addition, the air conditioner provided in the embodiments of the present application may specifically be a chip, a component or a module, and the air conditioner may include a connected processor and a memory; wherein the memory is used to store instructions, and when the air conditioner is running, the processor may call and execute the instructions so that the chip executes a sound source prompt method in the above-mentioned embodiments.

[0326] Among them, the air conditioner, computer-readable storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0327] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0328] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0329] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A fan coil wind speed control method, characterized in that: The method comprises: Determine a wind speed gear adjustment strategy based on historical wind speed gears; wherein the historical wind speed gear refers to the wind speed gear corresponding to the fan coil unit before the most recent shutdown; Obtaining the current detected temperature, comparing the current detected temperature with the limit temperature range, and obtaining a temperature comparison result; Based on the wind speed level adjustment strategy and using the temperature comparison result, adjusting the current wind speed level; The fan coil unit is controlled using the adjusted wind speed gear.

2. The method according to claim 1, characterized in that The working mode of the fan coil unit is cooling mode; The adjusting the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result includes: If the temperature comparison result is that the current detected temperature is lower than the set temperature in the limit temperature range, then the current wind speed level is reduced; If the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, then the current wind speed gear is increased; the first critical temperature is greater than the set temperature; If the temperature comparison result is that the current detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted to the shutdown gear; the second critical temperature is lower than the set temperature.

3. The method according to claim 2, characterized in that After adjusting the current wind speed gear to the shutdown gear, the method further includes: Using the current wind speed level to update the historical wind speed level; If the temperature comparison result is that the current detected temperature is greater than the third critical temperature, the shutdown gear is adjusted to the updated historical wind speed gear, and the third critical temperature is greater than the set temperature and less than the first critical temperature.

4. The method according to claim 2 or 3, characterized in that: If the temperature comparison result is that the current detected temperature is lower than the set temperature in the limit temperature range, then lowering the current wind speed level includes: If the temperature comparison result is that the current detected temperature is lower than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear, or the current wind speed gear is reduced from the third gear to the first gear; If the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, increasing the current wind speed level includes: If the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, the current wind speed gear is increased from the second gear to the first gear; If the temperature comparison result is that the current detected temperature is less than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted to the shutdown wind speed gear, including: If the temperature comparison result is that the current detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear; the shutdown gear is lower than the second gear.

5. The method according to claim 4, characterized in that The historical wind speed gear is the first gear; the method further includes: If the current wind speed gear is the first gear, and the previous wind speed gear is the second gear, and the temperature comparison result is that the current detected temperature is greater than the fourth critical temperature in the limit temperature range, then the current wind speed gear is adjusted from the first gear to the third gear; the fourth critical temperature is greater than the first critical temperature.

6. The method according to claim 4, characterized in that The historical wind speed gear is the first gear; If the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, increasing the current wind speed level includes: If the current wind speed gear is the first gear, and the temperature comparison result is that the current detected temperature is greater than the first critical temperature in the limit temperature range, the current wind speed gear is increased from the first gear to the third gear.

7. The method according to claim 4, characterized in that The historical wind speed gear is the second gear; the method further includes: If the temperature comparison result is that the current detected temperature is greater than the fourth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the third gear; the fourth critical temperature is greater than the first critical temperature.

8. The method according to claim 1, characterized in that The working mode of the fan coil unit is heating mode; The adjusting the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result includes: If the temperature comparison result is that the current detected temperature is greater than the set temperature in the limit temperature range, then the current wind speed level is reduced; If the temperature comparison result is that the current detected temperature is lower than the fifth critical temperature in the limit temperature range, then the current wind speed gear is increased; the fifth critical temperature is lower than the set temperature; If the temperature comparison result is that the current detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted to the shutdown gear; the sixth critical temperature is greater than the set temperature.

9. The method according to claim 8, characterized in that After adjusting the current wind speed gear to the shutdown gear, the method further includes: Using the current wind speed level to update the historical wind speed level; If the temperature comparison result is that the current detected temperature is less than the seventh critical temperature, the shutdown gear is adjusted to the updated historical wind speed gear, and the seventh critical temperature is less than the set temperature and greater than the fifth critical temperature.

10. The method according to claim 8 or 9, characterized in that: If the temperature comparison result is that the current detected temperature is greater than the set temperature in the limit temperature range, then reducing the current wind speed level includes: If the temperature comparison result is that the current detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear, or the current wind speed gear is reduced from the third gear to the first gear; If the temperature comparison result is that the current detected temperature is less than the fifth critical temperature in the limit temperature range, increasing the current wind speed level includes: If the temperature comparison result is that the current detected temperature is lower than the fifth critical temperature in the limit temperature range, the current wind speed gear is increased from the second gear to the first gear; If the temperature comparison result is that the current detected temperature is greater than the sixth critical temperature in the limit temperature range, adjusting the current wind speed gear to the shutdown gear includes: If the temperature comparison result is that the current detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear; the shutdown gear is lower than the second gear.

11. The method according to claim 10, characterized in that The historical wind speed gear is the first gear; the method further includes: If the current wind speed gear is the first gear, and the previous wind speed gear is the second gear, and the temperature comparison result is that the current detected temperature is lower than the eighth critical temperature in the limit temperature range, then the current wind speed gear is increased from the first gear to the third gear; the eighth critical temperature is lower than the fifth critical temperature.

12. The method according to claim 10, characterized in that The historical wind speed gear is the first gear; If the temperature comparison result is that the current detected temperature is less than the fifth critical temperature in the limit temperature range, increasing the current wind speed level includes: If the current wind speed gear is the first gear, and the temperature comparison result is that the current detected temperature is less than the fifth critical temperature in the limit temperature range, the current wind speed gear is increased from the first gear to the third gear.

13. The method according to claim 10, characterized in that The historical wind speed gear is the second gear; the method further includes: If the temperature comparison result is that the current detected temperature is greater than the eighth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the third gear; the eighth critical temperature is less than the fifth critical temperature.

14. The method according to claim 1, characterized in that Before determining the wind speed level adjustment strategy based on the historical wind speed levels, the method further includes: In response to a power-on instruction, obtaining a first detected temperature, comparing the first detected temperature with a limit temperature range, and obtaining a first temperature comparison result; According to the first temperature comparison result, setting the wind speed gear to the target gear; The wind speed gear is lowered to the shutdown gear by adopting a wind speed gear adjustment strategy corresponding to the target gear.

15. The method according to claim 14, characterized in that The working mode of the fan coil unit is cooling mode; The step of setting the wind speed gear as the target gear according to the first temperature comparison result includes: If the first temperature comparison result is that the first detected temperature is greater than the set temperature, the wind speed gear is set to the third gear, and the third gear is the target gear; If the first temperature comparison result is that the first detected temperature is less than or equal to the set temperature and greater than the second critical temperature, the wind speed gear is set to the first gear, and the first gear is the target gear.

16. The method according to claim 15, characterized in that The third gear is the target gear; The adopting of a wind speed gear adjustment strategy corresponding to the target gear to reduce the wind speed gear to a shutdown gear comprises: Acquire a second detected temperature, compare the second detected temperature with the limit temperature range, and obtain a second temperature comparison result; If the second temperature comparison result is that the second detected temperature is lower than the set temperature in the limit temperature range, reducing the current wind speed gear from the third gear to the first gear; Acquire a third detected temperature, compare the third detected temperature with the limit temperature range, and obtain a third temperature comparison result; If the third temperature comparison result is that the third detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the shutdown gear.

17. The method according to claim 15, characterized in that The first gear is the target gear; The adopting of a wind speed gear adjustment strategy corresponding to the target gear to reduce the wind speed gear to a shutdown gear comprises: Acquire a fourth detected temperature, compare the fourth detected temperature with the limit temperature range, and obtain a fourth temperature comparison result; If the fourth temperature comparison result is that the fourth detected temperature is lower than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear; Acquire a fifth detected temperature, compare the fifth detected temperature with the limit temperature range, and obtain a fifth temperature comparison result; If the fifth temperature comparison result is that the fifth detected temperature is lower than the second critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear.

18. The method according to claim 14, characterized in that The working mode of the fan coil unit is heating mode; The step of setting the wind speed gear as the target gear according to the first temperature comparison result includes: If the first temperature comparison result is that the first detected temperature is less than the set temperature, the wind speed gear is set to the third gear, and the third gear is the target gear; If the first temperature comparison result is that the first detected temperature is greater than or equal to the set temperature and less than the sixth critical temperature, the wind speed gear is set to the first gear, and the first gear is the target gear.

19. The method according to claim 18, characterized in that The third gear is the target gear; The adopting of a wind speed gear adjustment strategy corresponding to the target gear to reduce the wind speed gear to a shutdown gear comprises: Acquire a sixth detected temperature, compare the sixth detected temperature with the limit temperature range, and obtain a sixth temperature comparison result; If the sixth temperature comparison result is that the sixth detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the third gear to the first gear; Acquire a seventh detected temperature, compare the seventh detected temperature with the limit temperature range, and obtain a seventh temperature comparison result; If the seventh temperature comparison result is that the seventh detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the first gear to the shutdown gear.

20. The method according to claim 18, characterized in that The first gear is the target gear; The adopting of a wind speed gear adjustment strategy corresponding to the target gear to reduce the wind speed gear to a shutdown gear comprises: Acquiring an eighth detected temperature, comparing the eighth detected temperature with the limit temperature range, and obtaining an eighth temperature comparison result; If the eighth temperature comparison result is that the eighth detected temperature is greater than the set temperature in the limit temperature range, the current wind speed gear is reduced from the first gear to the second gear; Acquire a ninth detected temperature, compare the ninth detected temperature with the limit temperature range, and obtain a ninth temperature comparison result; If the ninth temperature comparison result is that the ninth detected temperature is greater than the sixth critical temperature in the limit temperature range, the current wind speed gear is adjusted from the second gear to the shutdown gear.

21. A fan coil unit wind speed control device, characterized in that: The device comprises: A determination module, used to determine a wind speed gear adjustment strategy based on a historical wind speed gear; wherein the historical wind speed gear refers to the wind speed gear corresponding to the fan coil unit before the most recent shutdown; A comparison module is used to obtain the current detection temperature, compare the current detection temperature with the limit temperature range, and obtain a temperature comparison result; An adjustment module, configured to adjust the current wind speed level based on the wind speed level adjustment strategy and using the temperature comparison result; The control module is used to control the fan coil unit using the adjusted wind speed gear.

22. A computer storage medium, characterized in that The computer storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 20 is implemented.

23. An air conditioner, characterized in that: The air conditioner comprises: A memory for storing executable program codes; A processor, configured to call and run the executable program code from the memory, so that the air conditioner executes the method according to any one of claims 1 to 20.

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