Air conditioner indoor unit fan output air volume adjusting method and related device

Abstract

The invention discloses an air conditioner indoor unit draught fan output air volume adjusting method and a related device, and the effect that even if an air valve is closed, the air volume at each opened air opening is still kept as the original air volume is achieved. The method comprises the steps that the number H2 of closed air valves in the air conditioner air supply system is determined; the air conditioner air supply system is provided with n air ports, m < 2 > air ports are each provided with an air valve, the remaining n-m < 2 > air ports are kept normally open, and m < 2 > is larger than 0 and smaller than or equal to n; the current gear of the fan of the air conditioner indoor unit is determined, and the initial value corresponding to the current gear is determined according to the corresponding relation between the pre-calibrated fan gear and the initial value of the fan control signal duty ratio; according to the number H2 of the closed air valves and the initial value corresponding to the current gear, the target value of the fan control signal duty ratio is determined; wherein the target value is equal to the product of the initial value corresponding to the current gear and (n-H2) / n; and generating a corresponding control instruction according to the target value and sending the control instruction to an execution mechanism.

Description

Technical Field

[0001] The present application relates to the field of automatic control technology, and in particular to a method for adjusting the output air volume of a fan of an indoor unit of an air conditioner and a related device. Background Art

[0002] The air supply system of the air conditioner (such as common duct units, pipeline units, etc.) uses branch pipes to transport the air after cooling / heating treatment to the indoor units of the air conditioners in each room, and then blows the cold air / hot air into the room through the fans of the indoor units of the air conditioners, so as to effectively regulate the indoor temperature. Generally, air valves are installed at the air outlets of each room. The air valves play a role similar to a "switch" in the entire system (when the air valve is opened, the air outlet where the air valve is located is opened, and when the air valve is closed, the air outlet where the air valve is located is closed). With the help of air valves, the air supply of each room can be controlled separately, so as to meet the personalized temperature requirements of different rooms at different times.

[0003] When the demand for cooling / heating in some rooms decreases, the corresponding air valves will be closed. However, due to the lack of an effective coordinated control mechanism between the air valves and the air conditioner host, the air conditioner host cannot sense the change in the state of the air valves, and thus cannot adjust the operating state of the air conditioner indoor unit fan accordingly. Therefore, the air conditioner indoor unit fan still maintains the original air volume output, which causes the air volume originally delivered to the air outlet of the closed air valve to flow to the air outlet that is still in the open state, causing a significant increase in the air volume at the open air outlet, which in turn causes two major problems: First, the airflow at the open air outlet is too strong, and the violent friction between the high-speed airflow and the air duct and air outlet components will significantly increase the noise, greatly reducing the user experience; second, excessive cooling / heating of the room with the open air outlet causes unnecessary energy waste. Summary of the invention

[0004] In view of the above problems, the present application provides a method and related device for adjusting the output air volume of the fan of an indoor unit of an air conditioner, so that even if the air valve is closed, the air volume at each open air outlet remains at the original air volume. The specific scheme is as follows:

[0005] The first aspect of the present application provides a method for adjusting the output air volume of a fan of an indoor unit of an air conditioner, comprising:

[0006] Determine the number H2 of closed air valves in the air-conditioning air supply system; the air-conditioning air supply system has n air outlets, wherein m2 air outlets are each equipped with an air valve, and the remaining n-m2 air outlets are kept open, 0<m2≤n;

[0007] Determine the current gear position of the indoor fan of the air conditioner, and determine the initial value corresponding to the current gear position according to the correspondence between the pre-calibrated fan gear position and the initial value of the fan control signal duty cycle; wherein the real-time value of the fan control signal duty cycle is positively correlated with the fan output air volume;

[0008] Determine the target value of the duty cycle of the fan control signal according to the number H2 of closed air valves and the initial value corresponding to the current gear; wherein, the target value is equal to the product of the initial value corresponding to the current gear and the ratio of the open air vents; the ratio of the open air vents is the ratio of the total number n of air vents minus the number H2 of closed air valves to the total number n of air vents;

[0009] Generate a corresponding control command according to the target value and send it to the actuator to adjust the output air volume of the fan.

[0010] In a possible implementation, the method further includes:

[0011] When 0 < H2 < n, perform air resistance compensation on the target value determined according to the number H2 of closed air valves and the initial value corresponding to the current gear, and use the compensated target value as the final target value; the air resistance compensation value is positively correlated with the number H2 of closed air valves.

[0012] In a possible implementation, the air resistance compensation value is equal to: the number H2 of closed air valves divided by the total number n of air vents and then multiplied by P2 and P m ;

[0013] P m is a preset compensation coefficient, and P2 is the initial value of the duty cycle of the fan control signal corresponding to the highest gear of the air conditioner indoor unit fan.

[0014] In a possible implementation, each room within the coverage range of the air conditioning air supply system is equipped with an independent thermostat; the thermostat is used to monitor the indoor temperature, and when the indoor temperature reaches the set temperature, control the corresponding air valve to close; when the indoor temperature does not reach the set temperature, control the corresponding air valve to remain open;

[0015] The determination of the number H2 of closed air valves in the air conditioning air supply system includes: communicating with each thermostat to collect and count the number H2 of closed air valves in the air conditioning air supply system.

[0016] In a possible implementation, the method further includes: communicating with the manual input interface to obtain the total number n of air vents input by the user.

[0017] In a possible implementation, the manual input interface includes a DIP switch circuit;

[0018] The communication with the manual input interface to obtain the total number n of air vents input by the user includes: communicating with the DIP switch circuit to read its binary code output and convert it into a decimal value, and the decimal value is the total number n of air vents;

[0019] Alternatively, the manual input interface includes a wired controller;

[0020] The method of acquiring the total number n of air outlets input by the user by communicating with the manual input interface includes: communicating with the wire controller, reading the screen input value or key command combination thereof, and determining the total number n of air outlets.

[0021] A second aspect of the present application provides an air volume adjustment device for a fan output of an air conditioner indoor unit, comprising:

[0022] A closed air valve number determination unit is used to determine the number H2 of closed air valves in the air conditioning air supply system; the air conditioning air supply system has n air outlets, wherein m2 air outlets are each equipped with an air valve, and the remaining n-m2 air outlets are kept normally open, 0<m2≤n;

[0023] An initial duty cycle determination unit determines the current gear position of the indoor fan of the air conditioner, and determines the initial value corresponding to the current gear position according to the correspondence between the pre-calibrated fan gear position and the initial value of the fan control signal duty cycle; wherein the real-time value of the fan control signal duty cycle is positively correlated with the fan output air volume;

[0024] The target duty cycle determination unit determines the target value of the duty cycle of the fan control signal according to the number of closed air valves H2 and the initial value corresponding to the current gear; wherein the target value is equal to the product of the initial value corresponding to the current gear and the proportion of open air outlets; the proportion of open air outlets is the ratio of the total number of air outlets n minus the number of closed air valves H2 to the total number of air outlets n;

[0025] The air volume adjustment instruction execution unit is used to generate corresponding control instructions according to the target value and send them to the execution mechanism to adjust the output air volume of the fan.

[0026] In a possible implementation, the device further includes:

[0027] The wind resistance compensation unit is used to compensate for the wind resistance of the target value determined according to the number of closed air valves H2 and the initial value corresponding to the current gear when 0<H2<n, and use the compensated target value as the final target value; the wind resistance compensation value is positively correlated with the number of closed air valves H2.

[0028] A third aspect of the present application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0029] The memory is used to store computer programs;

[0030] The processor is used to execute the computer program so that the electronic device can implement the method for adjusting the output air volume of the fan of the indoor unit of the air conditioner according to the first aspect or any implementation manner of the first aspect.

[0031] In the fourth aspect of the present application, an air conditioner is provided, and its air conditioner main unit includes the electronic device described in the third aspect above.

[0032] With the above technical solution, as the number of closed air valves in the present application changes, the duty ratio of the fan control signal is adjusted in real time and dynamically according to the opening air outlet ratio (the ratio of the total number of air outlets n minus the number of closed air valves H2 to the total number of air outlets n), specifically: the more closed air valves, the smaller the opening air outlet ratio, the smaller the duty ratio of the fan control signal, and the less the output air volume of the air conditioner indoor unit fan. Through this air volume adjustment method, the output air volume of the air conditioner indoor unit fan can accurately match the number of currently opened air outlets, ensuring that the air volume of each opened air outlet always remains at the original air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In combination with the drawings and with reference to the following specific embodiments, the above and other features, advantages and aspects of the embodiments of the present disclosure will become more obvious. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the components and elements are not necessarily drawn to scale.

[0034] Figure 1 It is a flowchart of a method for adjusting the output air volume of an air conditioner indoor unit fan provided by the present application;

[0035] Figure 2 It is a schematic structural diagram of a device for adjusting the output air volume of an air conditioner indoor unit fan provided by the present application;

[0036] Figure 3 It is another schematic structural diagram of a device for adjusting the output air volume of an air conditioner indoor unit fan provided by the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] To solve the problem that the air conditioner main unit cannot sense when the air damper is closed in the "Background Art", and thus cannot adjust the output air volume of the air conditioner indoor unit fan accordingly, it can be considered to equip each room with an independent thermostat. The thermostat monitors the indoor temperature in real time and compares it with the temperature set by the user, thereby controlling the on / off state of the corresponding air damper: when the indoor temperature reaches the set temperature, the corresponding air damper is controlled to close; when the indoor temperature does not reach the set temperature, the corresponding air damper is controlled to remain open. When all air dampers are closed, the on-site controller sends a shutdown command to the air conditioner main unit; as long as there is one open air damper, the operating state of the air conditioner main unit is maintained; in the scenario where some air dampers are open, the on-site controller adjusts the gear of the air conditioner indoor unit fan according to the ratio of the number of open air dampers to the total number of air dampers, as shown in Table 1 below (Table 1 is only shown by taking the air conditioner indoor unit fan having three gears: low gear, medium gear, and high gear as an example). When the number of closed air dampers is more, the gear of the air conditioner indoor unit fan will be correspondingly reduced, so that the air volume output by the air conditioner indoor unit fan will decrease accordingly, in order to suppress the increase amplitude of the air volume at the open air outlet.

[0038] Table 1 - Corresponding relationship table between the ratio (S) of the number of open air dampers to the total number of air dampers and the gear of the air conditioner indoor unit fan

[0039] The ratio S of the number of opened air valves to the total number of air valves The fan speed setting of the indoor unit of the air conditioner S＝0 The indoor unit fan of the air conditioner is stopped 0 < S ≤ a1 Low fan speed a1 < S ≤ a2 Medium fan speed S＝1 High fan speed

[0040] However, the air volume adjustment method adopted in Table 1 has the following defects: Since the air conditioner indoor unit fan only has a fixed number of gears, the air volume adjustment method adopted in Table 1 can only trigger the downshift adjustment action of the air conditioner indoor unit fan for the output air volume when the number of closed air dampers reaches a certain level; before that, since the output air volume of the air conditioner indoor unit fan cannot be adjusted in time, the air volume at the open air outlet will still inevitably increase slightly.

[0041] In response to this, the embodiment of the present application provides a method for adjusting the output air volume of the air conditioner indoor unit fan, aiming to achieve that the output air volume of the air conditioner indoor unit fan can accurately match the number of currently open air outlets, and ensure that the air volume of each open air outlet always maintains the original air volume.

[0042] Next, in combination with the accompanying drawings, a method for adjusting the output air volume of the air conditioner indoor unit fan provided by the embodiment of the present application will be described. Those of ordinary skill in the art know that with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0043] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is only to describe the distinction mode adopted by the objects of the same attributes when describing in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0044] See also Figure 1 , an embodiment of the present application provides a method for adjusting the output air volume of a fan of an indoor unit of an air conditioner, comprising:

[0045] Step S01: Determine the number H2 of closed air valves in the air conditioning system, and then enter step S02. The air conditioning system has n air outlets, m of which are each equipped with an air valve, and the remaining nm air outlets remain open (not equipped with air valves), 0<m≤n.

[0046] Specifically, each room within the coverage of the air conditioning system is equipped with an independent thermostat, which is used to monitor the indoor temperature. When the indoor temperature reaches the set temperature, the corresponding air valve is controlled to close; when the indoor temperature does not reach the set temperature, the corresponding air valve is controlled to remain open. The field controller can collect and count the number of closed air valves H2 in the air conditioning system by communicating with each thermostat.

[0047] Step S02: Determine the current gear position of the indoor unit fan of the air conditioner, and determine the initial value corresponding to the current gear position according to the pre-calibrated correspondence between the fan gear position and the initial value of the fan control signal duty cycle, and then enter step S03. The real-time value of the fan control signal duty cycle is positively correlated with the fan output air volume.

[0048] Specifically, the operation of the indoor fan of the air conditioner depends on the power provided by the internal motor. The duty cycle of the fan control signal refers to the ratio of the duration of the signal used to drive the motor to operate at a high level to the duration of the entire cycle in a complete control cycle. By adjusting this duty cycle, the operating state of the motor can be changed, thereby adjusting the fan output air volume.

[0049] The duty cycle of the fan control signal is positively correlated with the air volume output by the fan. Specifically, when the duty cycle is high, the duration of the high-level drive signal received by the motor increases, and more electrical energy is converted into mechanical energy, prompting the fan to rotate faster, thereby increasing the air volume output by the fan; conversely, when the duty cycle is low, the duration of the high-level drive signal received by the motor shortens, the energy obtained decreases, the fan speed decreases accordingly, and the air volume output by the fan also decreases.

[0050] The fan of the air conditioner indoor unit has multiple fixed gears (for example, three gears: low wind gear, medium wind gear, and high wind gear). Users can operate the wire controller of the air conditioner main unit to set the fan of the air conditioner indoor unit to a specific gear. Each gear is pre-calibrated with an initial value of the duty cycle of the fan control signal. The fan gear is positively correlated with the initial value of the duty cycle of the fan control signal, and the duty cycle of the fan control signal is positively correlated with the air volume output by the fan. Therefore, by switching the fan gear, the initial air volume output after the fan switches gears can be adjusted. Specifically, the higher the fan gear switched to, the larger the initial value of the duty cycle of the corresponding fan control signal, and the larger the initial air volume output by the fan of the air conditioner indoor unit after switching gears; the lower the fan gear switched to, the smaller the initial value of the duty cycle of the corresponding fan control signal, and the smaller the initial air volume output by the fan of the air conditioner indoor unit after switching gears.

[0051] Step S03: Calculate the target value P3 of the duty cycle of the fan control signal according to the formula P3 = P1(n - H2) / n, generate a corresponding control command according to the target value P3 and send it to the actuator to adjust the air volume output by the fan.

[0052] Specifically, under the configuration where the total number m of air valves in the air conditioning air supply system is equal to the total number n of air outlets, at any fan gear: when all air valves are open, assuming the air volume output by the fan of the air conditioner indoor unit is Q1, then the air volume at each air outlet is Q1 / n; when some air valves are closed, the duty cycle of the fan control signal can be linearly reduced according to the proportion of the number of open air valves to the total number of air valves. Specifically, the target value P3 of the duty cycle of the fan control signal is calculated according to the formula P3 = P1(m - H2) / m. Then, when the duty cycle of the fan control signal is adjusted from the initial value P1 at the current gear to P3, the air volume output by the fan of the air conditioner indoor unit is adjusted from Q1 to Q3 = Q1(m - H2) / m, and the air volume at each open air outlet is Q3 / (n - H2) = (Q1(m - H2) / m) / (n - H2) = Q1 / m. It can be seen that the air volume at each open air outlet remains the original air volume.

[0053] However, in actual engineering applications, there may be a situation where some air vents do not have air valves and are in a normally open state (the total number of air vents n is greater than the total number of air valves m). At this time, when some air valves are closed, if the air volume regulation is still carried out according to the formula P3 = P1(m - H2) / m, it will cause a significant decrease in the air volume at each opened air vent (the opened air vents include the air vents that do not have air valves and are in a normally open state and the air vents with opened air valves), significantly deviating from the ideal state of keeping the air volume of each opened air vent constant. For example, in an air conditioning air supply system where the total number of air valves m is less than the total number of air vents n, and each of the m air vents is equipped with an air valve, and the remaining n - m air vents are normally open and not controlled by air valves. At any fan speed: when all air vents are opened, the air volume output by the indoor air conditioner fan is Q1, then the air volume obtained by each air vent is Q1 / n; when some air valves are closed, since there are n - m air vents that are normally open, there are a total of n - H2 air vents in the opened state; if the air volume regulation is carried out according to the formula P3 = P1(m - H2) / m, the air volume output by the indoor air conditioner fan is adjusted to Q3 = Q1(m - H2) / m, and the air volume of each opened air vent is Q3 / (n - H2) = Q1(m - H2) / m / (n - H2), then the change in the air volume of each opened air vent is Q3 / (n - H2) - Q1 / n = Q1(m - H2) / m / (n - H2) - Q1 / n = -Q1H2(n - m) / (mn(n - H2)) < 0. It can be seen that the air volume of each opened air vent is lower than the original, and the ideal state of maintaining the original air volume is not achieved, which is called correction distortion.

[0054] To avoid correction distortion, in the embodiments of the present application, the duty cycle is linearly adjusted according to the ratio of the number of opened air vents to the total number of air vents, that is, the target value P3 of the duty cycle of the fan control signal is calculated according to the formula P3 = P1(n - H2) / n, so that:

[0055] When m = n, when the duty cycle of the fan control signal is adjusted from P1 to P3 = P1(n - H2) / n, the air volume output by the indoor air conditioner fan is adjusted from Q1 to Q3 = Q1(n - H2) / n, and the air volume at each opened air vent is Q3 / (n - H2) = Q1(n - H2) / n / (n - H2) = Q1 / n, still maintaining the original air volume, and there will be no problem of a significant increase in the air volume at the opened air vents.

[0056] When m < n, when the duty cycle of the fan control signal is adjusted from P1 to P3 = P1(n - H2) / n, the air volume output by the indoor air conditioner fan is adjusted from Q1 to Q3 = Q1(n - H2) / n, and the air volume of each opened air vent is Q3 / (n - H2) = Q1(n - H2) / n / (n - H2) = Q1 / n, still maintaining the original air volume, and there will be no problem of a significant increase in the air volume at the air vents with opened air valves.

[0057] It can be seen that when the total number of air valves is inconsistent with the total number of air outlets, regulating the air volume solely based on the ratio (m - H2) / m of the number of opened air valves to the total number of air valves will result in correction distortion. This is a very crucial insight because it reveals the problems that may be encountered in practical applications: the change in the state of the air valve affects the air volume output of the air outlet, which is an observed phenomenon. The essential reason behind this phenomenon is that the closing of the air valve affects the number of opened air outlets, thereby affecting the air volume output of each air outlet. Therefore, the change in the number of opened air outlets is the fundamental cause of the change in the air volume output of each air outlet. The causal chain is: change in air valve state → change in the number of opened air outlets → change in the air volume output of the opened air outlets. That is to say, although the change in the air valve state is the starting point of the entire causal chain, the change in the number of opened air outlets is the direct and crucial factor affecting the air volume output. Therefore, in the analysis and calculation process, the ratio (n - H2) / n of the number of opened air outlets to the total number of air outlets should be used for adjustment, rather than the ratio (m - H2) / m of the number of opened air valves to the total number of air valves.

[0058] In addition, according to the formula P3 = P1(n - H2) / n, when all air valves are closed, the indoor unit fan of the air conditioner is controlled to stop to save energy; when no air valve is closed, the air volume is not adjusted.

[0059] In summary, in the embodiment of the present application, with the change in the number of closed air valves, the duty ratio of the fan control signal is adjusted in real time and dynamically according to the opening ratio of the air outlets (the ratio of the total number of air outlets n minus the number of closed air valves H2 to the total number of air outlets n), specifically: the more the number of closed air valves, the smaller the opening ratio of the air outlets, the smaller the duty ratio of the fan control signal, and the smaller the output air volume of the indoor unit fan of the air conditioner. Through this air volume adjustment method, the output air volume of the indoor unit fan of the air conditioner can accurately match the current number of opened air outlets, ensuring that the air volume of each opened air outlet always maintains the original air volume.

[0060] It should be noted that for the step S01 and the step S00, the execution sequence between them is not fixed. Figure 1 The shown execution sequence is just an example among many possible situations.

[0061] In a possible implementation, when 0 < H2 < n, air resistance compensation is performed on the target value determined according to the number of closed air valves H2 and the initial value corresponding to the current gear, and the compensated target value is used as the final target value.

[0062] The purpose of air resistance compensation is to correct the change in system air resistance caused by the closing of the air valve, ensuring that the air volume output by the fan can accurately match the actual demand of the current system. Specifically: when some air valves are closed, the system air resistance increases, resulting in a decrease in the air volume output by the fan. Therefore, if air resistance compensation is not carried out, even if the duty cycle of the fan control signal is adjusted to the target value, the actual output air volume may be lower than expected. Therefore, in the embodiments of the present application, by considering the impact of air resistance change on the air volume output by the fan, the target value P3 is appropriately adjusted, and the compensated target value can more accurately reflect the actual required duty cycle of the fan control signal. It can be said that air resistance compensation can improve the stability and reliability of the system, ensuring that the air volume of each opened air outlet always maintains the original air volume.

[0063] The air resistance compensation value is positively correlated with the number H2 of closed air valves. In a possible implementation, the air resistance compensation value = H2 / n × P2 × P m , P m is a preset compensation coefficient, and P2 is the initial value of the duty cycle of the fan control signal corresponding to the highest gear of the fan. That is, when 0 < H2 < n, according to the formula P3 = P1(n - H2) / n + H2 / n × P2 × P m calculate the target value P3 of the duty cycle of the fan control signal; when all air valves are closed, control the fan of the air conditioner indoor unit to stop; when no air valve is closed, do not adjust the air volume.

[0064] In a possible implementation, the method for adjusting the air volume output by the fan of the air conditioner indoor unit disclosed in any embodiment of the present application further includes: communicating with the manual input interface to obtain the total number n of air outlets input by the user. This design is mainly to effectively address possible problems in the actual engineering application scenario, that is, when the total number n of air valves changes, the n value stored in the software control program fails to be updated in a timely manner, so as to ensure that the system can perform subsequent related operations based on the accurate total number of air outlets.

[0065] The manual input interface includes, for example, a DIP switch circuit or a wired controller;

[0066] The communicating with the manual input interface to obtain the total number n of air outlets input by the user includes: communicating with the DIP switch circuit, reading its binary code output and converting it into a decimal value, and the decimal value is the total number n of air outlets.

[0067] Alternatively, the manual input interface includes, for example, a wired controller;

[0068] The communicating with the manual input interface to obtain the total number n of air outlets input by the user includes: communicating with the wired controller, reading the numerical value input on its screen or the combination of key commands, and determining the total number n of air outlets.

[0069] The wire controller is a commonly used manual input interface with an intuitive operation interface. The user can input the total number of air outlets n through interactive components such as buttons or touch screens on the wire controller. After the user performs the input operation, the wire controller encodes the input numerical information and sends the encoded information to the air conditioner host through the communication line between it and the system. After receiving the information from the wire controller, the air conditioner host decodes it to obtain the accurate total number of air outlets n.

[0070] A method for adjusting the output air volume of a fan of an indoor unit of an air conditioner according to an embodiment of the present application is introduced above. A device for executing the method for adjusting the output air volume of a fan of an indoor unit of an air conditioner will be introduced below.

[0071] See also Figure 2 , an embodiment of the present application provides a device for adjusting the output air volume of a fan of an indoor unit of an air conditioner, comprising:

[0072] The closed air valve number determination unit 100 is used to determine the number H2 of closed air valves in the air conditioning and air supply system; the air conditioning and air supply system has n air outlets, wherein m2 air outlets are each equipped with an air valve, and the remaining n-m2 air outlets are kept open, 0<m2≤n;

[0073] The initial duty cycle determination unit 200 determines the current gear position of the fan of the indoor unit of the air conditioner, and determines the initial value corresponding to the current gear position according to the correspondence between the pre-calibrated fan gear position and the initial value of the fan control signal duty cycle; wherein the real-time value of the fan control signal duty cycle is positively correlated with the fan output air volume;

[0074] The target duty cycle determination unit 300 determines the target value of the duty cycle of the fan control signal according to the number of closed air valves H2 and the initial value corresponding to the current gear; wherein the target value is equal to the product of the initial value corresponding to the current gear and the proportion of open air outlets; the proportion of open air outlets is the ratio of the total number of air outlets n minus the number of closed air valves H2 to the total number of air outlets n;

[0075] The air volume adjustment instruction execution unit 400 is used to generate a corresponding control instruction according to the target value and send it to the execution mechanism to adjust the output air volume of the fan.

[0076] In a possible implementation, the air volume adjustment device for the fan output of the air conditioner indoor unit further includes:

[0077] The wind resistance compensation unit 500 is used to compensate for the wind resistance of the target value determined according to the number of closed air valves H2 and the initial value corresponding to the current gear when 0<H2<n, and use the compensated target value as the final target value; the wind resistance compensation value is positively correlated with the number of closed air valves H2.

[0078] An embodiment of the present application further provides an electronic device, including at least one processor and a memory connected to the processor, where:

[0079] The memory is used to store a computer program;

[0080] The processor is used to execute the computer program so that the electronic device can implement any one of the air conditioner indoor unit fan output air volume adjustment methods provided by the embodiments of the present application. The electronic device is the on-site controller mentioned above.

[0081] An embodiment of the present application further provides an air conditioner, the air conditioner host of which includes any one of the above-mentioned electronic devices.

[0082] An embodiment of the present application further provides a computer program product, including computer-readable instructions, when the computer-readable instructions run on an electronic device, enabling the electronic device to implement any one of the air conditioner indoor unit fan output air volume adjustment methods provided by the embodiments of the present application.

[0083] An embodiment of the present application further provides a computer-readable storage medium, which carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, can enable the electronic device to implement any one of the air conditioner indoor unit fan output air volume adjustment methods provided by the embodiments of the present application.

[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the embodiments of the present application. Therefore, the embodiments of the present application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for adjusting the output air volume of a blower of an air conditioner indoor unit, characterized in that, include: Determine the number H2 of closed air valves in the air-conditioning air supply system; the air-conditioning air supply system has n air outlets, wherein m2 air outlets are each equipped with an air valve, and the remaining n-m2 air outlets are kept open, 0<m2≤n; Determine the current gear position of the indoor fan of the air conditioner, and determine the initial value corresponding to the current gear position according to the correspondence between the pre-calibrated fan gear position and the initial value of the fan control signal duty cycle; wherein the real-time value of the fan control signal duty cycle is positively correlated with the fan output air volume; According to the number of closed air valves H2 and the initial value corresponding to the current gear, the target value of the duty cycle of the fan control signal is determined; wherein the target value is equal to the product of the initial value corresponding to the current gear and the proportion of open air outlets; the proportion of open air outlets is the ratio of the total number of air outlets n minus the number of closed air valves H2 to the total number of air outlets n; A corresponding control instruction is generated according to the target value and sent to the actuator to adjust the output air volume of the fan.

2. The method for adjusting the air volume output of the blower of the air conditioner indoor unit according to claim 1, wherein The method further comprises: When 0<H2<n, the wind resistance compensation is performed on the target value determined according to the number of closed air valves H2 and the initial value corresponding to the current gear, and the compensated target value is used as the final target value; the wind resistance compensation value is positively correlated with the number of closed air valves H2.

3. The method for adjusting the output air volume of the air conditioner indoor unit fan according to claim 2, wherein The air resistance compensation value is equal to: the number of closed air valves H2 divided by the total number of air inlets n, and then multiplied by P2 and P m ; P m is a preset compensation coefficient, and P2 is the initial value of the duty ratio of the fan control signal corresponding to the highest gear of the air conditioner indoor unit fan.

4. The method for adjusting the output air volume of the blower of the air conditioner indoor unit according to claim 1, 2 or 3, characterized in that, Each room within the coverage of the air conditioning system is equipped with an independent thermostat; the thermostat is used to monitor the indoor temperature, and when the indoor temperature reaches the set temperature, the corresponding air valve is controlled to close; when the indoor temperature does not reach the set temperature, the corresponding air valve is controlled to remain open; The determining the number H2 of closed air valves in the air-conditioning air supply system includes: communicating with each thermostat to collect and count the number H2 of closed air valves in the air-conditioning air supply system.

5. The method for adjusting the output air volume of the air conditioner indoor unit fan according to claim 1, 2 or 3, characterized in that The method further includes: acquiring the total number n of air outlets input by the user by communicating with the manual input interface.

6. The method for adjusting the output air volume of the blower of the air conditioner indoor unit according to claim 5, wherein, The manual input interface includes a dip switch circuit; The method of acquiring the total number of air outlets n input by the user by communicating with the manual input interface includes: communicating with the dial switch circuit, reading its binary code output and converting it into a decimal value, wherein the decimal value is the total number of air outlets n; Alternatively, the manual input interface includes a wired controller; The method of acquiring the total number n of air outlets input by the user by communicating with the manual input interface includes: communicating with the wire controller, reading the screen input value or key command combination thereof, and determining the total number n of air outlets.

7. An air volume adjustment device for the blower of an air conditioner indoor unit, characterized in that, include: A closed air valve number determination unit is used to determine the number H2 of closed air valves in the air conditioning air supply system; the air conditioning air supply system has n air outlets, wherein m2 air outlets are each equipped with an air valve, and the remaining n-m2 air outlets are kept normally open, 0<m2≤n; An initial duty cycle determination unit determines the current gear position of the indoor fan of the air conditioner, and determines the initial value corresponding to the current gear position according to the correspondence between the pre-calibrated fan gear position and the initial value of the fan control signal duty cycle; wherein the real-time value of the fan control signal duty cycle is positively correlated with the fan output air volume; A target duty ratio determination unit determines a target value of the duty ratio of the fan control signal according to the number H2 of closed air valves and the initial value corresponding to the current gear; wherein, the target value is equal to the product of the initial value corresponding to the current gear and the ratio of the open air vents; the ratio of the open air vents is the ratio of the total number n of air vents minus the number H2 of closed air valves to the total number n of air vents. An air volume adjustment instruction execution unit is configured to generate a corresponding control instruction according to the target value and send it to an actuator to adjust the output air volume of the fan.

8. The air volume adjustment device for the blower of the air conditioner indoor unit according to claim 7, characterized in that, The device further includes: An air resistance compensation unit is configured to perform air resistance compensation on the target value determined according to the number H2 of closed air valves and the initial value corresponding to the current gear when 0 < H2 < n, and use the compensated target value as the final target value; the air resistance compensation value is positively correlated with the number H2 of closed air valves.

9. An electronic device, characterized in that, It includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is configured to execute the computer program so that the electronic device can implement the method for adjusting the output air volume of the air conditioner indoor unit fan as described in any one of claims 1 to 6.

10. An air conditioner, characterized in that, Its air conditioner main unit includes the electronic device as described in claim 9.

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