Air conditioner control method

Abstract

The invention provides an air conditioner control method. The air conditioner control method comprises the steps that formaldehyde gas release information of a formaldehyde adsorption module in an indoor unit of an air conditioner is obtained; based on the formaldehyde gas release information, the first formaldehyde concentration change rate Ya in the indoor unit is calculated; if the first formaldehyde concentration change rate Ya is larger than or equal to a first threshold value Y1, the air conditioner is controlled to be switched to a first exhaust mode; and if the first formaldehyde concentration change rate Ya is smaller than the first threshold value Y1, the air conditioner is controlled to operate in the working mode set by the user. The problem that in the prior art, a formaldehyde adsorption module in an air conditioner can cause repeated pollution to indoor air is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner control method. Background Art

[0002] At present, in the process of interior decoration, a large amount of low-cost artificial boards and adhesives are usually used. These materials will slowly release toxic and harmful formaldehyde gas into the room during the user's subsequent use. Even if the user conducts long-term ventilation and purification before officially moving in, it is impossible to completely prevent the occurrence of the above situation.

[0003] In the prior art, air conditioners are common household appliances with cooling, heating and ventilation functions. Some manufacturers have begun to make corresponding improvements to air conditioners to achieve the formaldehyde purification function of the air conditioner, such as adding a corresponding formaldehyde adsorption module inside the indoor unit of the air conditioner to purify the formaldehyde in the indoor air through adsorption or adsorption combined with catalytic decomposition during the operation of the air conditioner.

[0004] However, since the release and volatilization of formaldehyde is slow and continuous, the failure of the formaldehyde adsorption module is not easy to be discovered (i.e., whether the formaldehyde adsorption capacity of the formaldehyde adsorption module has reached saturation). In addition, during the operation of the air conditioner, if the temperature inside the machine rises (such as the air conditioner's set cooling temperature is high, the fresh air mode and heating mode of simple ventilation, etc.), the formaldehyde adsorption material in the formaldehyde adsorption module will be desorbed (formaldehyde will be released into the air again), which will cause secondary pollution of the indoor air. Summary of the invention

[0005] The main purpose of the present invention is to provide an air conditioner control method to solve the problem in the prior art that the formaldehyde adsorption module in the air conditioner may cause repeated pollution of indoor air.

[0006] In order to achieve the above-mentioned purpose, the present invention provides an air conditioner control method, including: obtaining formaldehyde gas release information of a formaldehyde adsorption module in an indoor unit of an air conditioner; based on the formaldehyde gas release information, calculating a first formaldehyde concentration change rate Ya in the indoor unit; if the first formaldehyde concentration change rate Ya is greater than or equal to a first threshold value Y1, controlling the air conditioner to switch to a first exhaust mode; if the first formaldehyde concentration change rate Ya is less than the first threshold value Y1, controlling the air conditioner to operate in a user-set working mode.

[0007] Further, when the first formaldehyde concentration change rate Ya is greater than or equal to the first threshold value Y1, the compressor of the air conditioner is controlled to switch to the heating mode.

[0008] Furthermore, the air conditioner control method also includes: adjusting the exhaust flow rate or exhaust flow rate of the air conditioner according to the second formaldehyde concentration change rate Yi in the indoor unit, and adjusting the temperature in the indoor unit to promote the formaldehyde adsorption module to release formaldehyde gas.

[0009] Furthermore, when the air conditioner is running in the first exhaust mode, the fan device for exhaust is controlled to run at a first preset speed N1; the method for adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit includes: if the second formaldehyde concentration change rate Yi is greater than or equal to the second threshold value Y2 and less than the second threshold value Y3, the speed of the fan device is adjusted to the second preset speed N2; if the second formaldehyde concentration change rate Yi is greater than or equal to the third threshold value Y3, the speed of the fan device is adjusted to the third preset speed N3; wherein, the first preset speed N1, the second preset speed N2 and the third preset speed N3 satisfy: N1<N2<N3≤1100rpm; the first threshold value Y1, the second threshold value Y2 and the third threshold value Y3 satisfy: 0≤Y1≤0.01mg / (L·s), Y3>Y1≥Y2.

[0010] Furthermore, when the air conditioner is operating in the first exhaust mode, the temperature in the indoor unit is adjusted to a first preset temperature T1; the method of adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit also includes: if the second formaldehyde concentration change rate Yi is greater than or equal to the second threshold value Y2 and less than the third threshold value Y3, the operating frequency of the air conditioner compressor is adjusted to adjust the temperature in the indoor unit to the second preset temperature T2; if the second formaldehyde concentration change rate Yi is greater than or equal to the third threshold value Y3, the temperature in the indoor unit is maintained at the first preset temperature T1; wherein the first preset temperature value T1 and the second preset temperature value T2 satisfy: 55℃≤T1≤60℃, T1<T2≤65℃.

[0011] Furthermore, the method for adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit also includes: if the second formaldehyde concentration change rate Yi is less than the second threshold value Y2, the air conditioner operates in the user-set working mode.

[0012] Furthermore, the method for obtaining the second formaldehyde concentration change rate Yi includes: re-obtaining formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit, and calculating the second formaldehyde concentration change rate Yi.

[0013] Furthermore, the method for obtaining formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit includes: using a formaldehyde concentration sensor to detect the formaldehyde concentration value in the gas in the indoor unit; the formula for calculating the formaldehyde concentration change rate Y is:

[0014]

[0015] Among them, C2 is the detection value of the formaldehyde concentration sensor at time t2, C1 is the detection value of the formaldehyde concentration sensor at time t1, (t2-t1) is the detection interval B of the formaldehyde concentration sensor, before the air conditioner operates in the first exhaust mode, the detection interval B1 of the formaldehyde concentration sensor satisfies: 0S<B1<10s, in the process of re-acquiring the formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit, the detection interval B2 of the formaldehyde concentration sensor satisfies: 1s≤B1≤5s.

[0016] Furthermore, the method for switching the air conditioner to the exhaust mode includes: controlling the air guide plate of the indoor unit to close, controlling the air inlet of the indoor unit to open, and turning on the fan device in the indoor unit for exhausting air.

[0017] Furthermore, the air conditioner control method also includes: after adjusting the exhaust flow rate or exhaust flow rate of the air conditioner according to the second formaldehyde concentration change rate Yi in the indoor unit, and adjusting the temperature in the indoor unit, controlling the air conditioner to continuously run for a time A, and repeating the exhaust flow rate or exhaust flow rate adjustment process of the air conditioner and the temperature adjustment process in the indoor unit until the air conditioner operates in the working mode set by the user.

[0018] Applying the technical solution of the present invention, the air conditioner control method includes: obtaining formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit of the air conditioner; calculating the first formaldehyde concentration change rate Ya in the indoor unit based on the formaldehyde gas release information; if the first formaldehyde concentration change rate Ya is greater than or equal to the first threshold value Y1, then controlling the air conditioner to switch to the first exhaust mode; if the first formaldehyde concentration change rate Ya is less than the first threshold value Y1, then controlling the air conditioner to operate in the user-set working mode. In this way, during the operation of the air conditioner, since the formaldehyde release process of the decoration building materials is very slow, it will not cause a large change in the formaldehyde concentration in the indoor unit (the first formaldehyde concentration change rate Ya is small). If the first formaldehyde concentration change rate Ya in the indoor unit is greater than or equal to the first threshold value Y1, it means that the formaldehyde adsorption module has begun to desorb (i.e., release formaldehyde gas into the air), and the air conditioner will switch to the exhaust mode at this time, that is, by sucking the indoor air to the inside and outside, so as to directly take the formaldehyde gas to the outside, thereby solving the problem that the formaldehyde adsorption module in the air conditioner in the prior art will cause repeated pollution of the indoor air, and ensure the personal health of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1A flow chart showing an embodiment of an air conditioner control method according to the present invention is shown;

[0021] Figure 2 Shows Figure 1 Specific flow chart of the air conditioner control method in FIG. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In order to solve the problem in the prior art that the formaldehyde adsorption module in the air conditioner may cause repeated pollution of the indoor air, the present application provides an air conditioner control method.

[0025] like Figure 1 and Figure 2 As shown, the air conditioner control method includes:

[0026] Acquiring formaldehyde gas release information of a formaldehyde adsorption module in an indoor unit of an air conditioner;

[0027] Based on the formaldehyde gas release information, calculating a first formaldehyde concentration change rate Ya in the indoor unit;

[0028] If the first formaldehyde concentration change rate Ya is greater than or equal to the first threshold value Y1, the air conditioner is controlled to switch to the first exhaust mode; if the first formaldehyde concentration change rate Ya is less than the first threshold value Y1, the air conditioner is controlled to operate in the user-set working mode.

[0029] Applying the technical solution of this embodiment, the air conditioner control method includes: obtaining formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit of the air conditioner; based on the formaldehyde gas release information, calculating the first formaldehyde concentration change rate Ya in the indoor unit; if the first formaldehyde concentration change rate Ya is greater than or equal to the first threshold value Y1, controlling the air conditioner to switch to the first exhaust mode; if the first formaldehyde concentration change rate Ya is less than the first threshold value Y1, controlling the air conditioner to operate in the user-set working mode. In this way, during the operation of the air conditioner, since the formaldehyde release process of the decoration building materials is very slow, the formaldehyde concentration in the indoor unit will not change significantly (the first formaldehyde concentration change rate Ya is small). If the first formaldehyde concentration change rate Ya in the indoor unit is greater than or equal to the first threshold value Y1, it means that the formaldehyde adsorption module has begun to desorb (i.e., releasing formaldehyde gas into the air), and the air conditioner will switch to the exhaust mode at this time, that is, by sucking the indoor air to the inside and outside, so as to take the formaldehyde gas directly to the outside, thereby solving the problem in the prior art that the formaldehyde adsorption module in the air conditioner will cause repeated pollution of the indoor air, thereby ensuring the personal health of the user.

[0030] In this embodiment, the air conditioner is an air conditioner with an exhaust function (i.e., capable of sucking indoor air to the outdoors), and its indoor unit has structures such as an air inlet, an evaporator, an indoor fan, an air outlet, an air guide plate, a fresh air duct, and an exhaust duct. The exhaust duct is connected to the fresh air duct and the fresh air outlet through a three-way valve. When the air conditioner is switched to the first exhaust mode, the fresh air duct and the exhaust duct are interconnected, and the air inlet is opened synchronously. The indoor air enters the indoor unit through the air inlet, flows through the fresh air duct and the exhaust duct, and finally flows to the outdoors. It should be noted that the overall structure of the air conditioner is relatively conventional and will not be described in detail here.

[0031] In this embodiment, a formaldehyde adsorption module for adsorbing formaldehyde gas is provided inside the indoor unit. The formaldehyde adsorption module is usually made of porous materials such as activated carbon, silica gel, zeolite, etc., and has a large surface area. The large surface area is conducive to the adsorption of a large number of formaldehyde molecules, but when the adsorption material is saturated and the temperature rises, the adsorbed formaldehyde molecules will move violently and be released back into the air (desorption process).

[0032] In this embodiment, a formaldehyde concentration sensor is further provided inside the indoor unit, and the formaldehyde concentration sensor can detect the formaldehyde concentration value in the gas in real time.

[0033] like Figure 1 and Figure 2As shown, when the first formaldehyde concentration change rate Ya is greater than or equal to the first threshold value Y1, the compressor of the air conditioner is controlled to switch to the heating condition. In this way, the compressor switched to the heating condition can heat the indoor unit, thereby heating the formaldehyde adsorption module. On the one hand, the above setting facilitates the subsequent process to further detect the formaldehyde concentration change rate to determine the desorption state of the formaldehyde adsorption module or determine whether the formaldehyde concentration sensor has a false detection, thereby improving the operating reliability of the air conditioner control method; on the other hand, by heating the formaldehyde adsorption module, the formaldehyde gas release process of the formaldehyde adsorption module is more thorough, so as to restore the formaldehyde adsorption function of the formaldehyde adsorption module and realize the reuse of the formaldehyde adsorption module.

[0034] In this embodiment, the air conditioner operating mode switched to the first exhaust mode and the compressor adjusted to the heating condition is the desorption operating mode of the air conditioner, so that the formaldehyde quickly released by the formaldehyde adsorption module can be completely taken away to the outdoors.

[0035] like Figure 1 and Figure 2 As shown, the air conditioner control method further includes: adjusting the exhaust flow rate or exhaust flow rate of the air conditioner according to the second formaldehyde concentration change rate Yi in the indoor unit, and adjusting the temperature in the indoor unit to promote the formaldehyde adsorption module to release formaldehyde gas. In this way, according to the second formaldehyde concentration change rate Yi in the indoor unit, the exhaust flow rate or exhaust flow rate of the air conditioner and the temperature in the indoor unit are further adjusted, so that the exhaust flow rate, exhaust flow rate and temperature can match the formaldehyde release rate of the formaldehyde adsorption module, so as to increase the formaldehyde gas release rate of the formaldehyde adsorption module, reduce the time consumed by the desorption process of the formaldehyde adsorption module, and improve the user experience.

[0036] like Figure 1 and Figure 2 As shown, during the operation of the air conditioner in the first exhaust mode, the fan device for exhausting air is controlled to operate at a first preset speed N1; the method for adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit includes:

[0037] If the second formaldehyde concentration change rate Yi is greater than or equal to the second threshold value Y2 and less than the second threshold value Y3, the speed of the fan device is adjusted to the second preset speed N to form a second exhaust mode;

[0038] If the second formaldehyde concentration change rate Yi is greater than or equal to the third threshold value Y3, the speed of the fan device is adjusted to the third preset speed N3 to form a third exhaust mode;

[0039] The first preset speed N1, the second preset speed N2 and the third preset speed N3 satisfy: N1<N2<N3≤1100rpm; the first threshold value Y1, the second threshold value Y2 and the third threshold value Y3 satisfy: 0≤Y1≤0.01mg / (L·s), Y3>Y1≥Y2.

[0040] Specifically, if the second formaldehyde concentration change rate Yi is greater than or equal to the third threshold value Y3 (maximum threshold value), it means that the formaldehyde release rate of the formaldehyde adsorption module is relatively large (the initial formaldehyde release rate of the formaldehyde adsorption module under saturation is the largest, and the degree of decrease in the formaldehyde release rate is also relatively drastic. As formaldehyde is continuously released, the degree of decrease in the formaldehyde release rate also begins to gradually ease). At this time, the speed of the fan device is adjusted to the third preset speed N3 (maximum speed value), which can ensure that a large amount of formaldehyde gas will not flow back into the room, while allowing the mixed gas of water vapor (generated by the heat of the formaldehyde adsorption module) and formaldehyde gas to be quickly desorbed under high temperature and high wind speed conditions.

[0041] Specifically, if the second formaldehyde concentration change rate Yi is greater than or equal to the second threshold value Y2 and less than the second threshold value Y3, it means that the formaldehyde release rate of the formaldehyde adsorption module is low. At this time, by adjusting the speed of the fan device to the second preset speed N2 (compared with the first preset speed N1, the speed is still increasing), the formaldehyde gas can be taken away more quickly to reduce the formaldehyde concentration in the indoor unit, thereby helping the formaldehyde adsorption module to release formaldehyde gas more quickly.

[0042] Specifically, the above settings of the first threshold value Y1, the second threshold value Y2 and the third threshold value Y3 ensure that the value of each threshold value is relatively appropriate, so as to improve the accuracy of the above speed adjustment process, so that the exhaust speed or exhaust flow rate can match the formaldehyde release rate of the formaldehyde adsorption module.

[0043] like Figure 1 and Figure 2 As shown, during the operation of the air conditioner in the first exhaust mode, the temperature in the indoor unit is adjusted to a first preset temperature T1; the method of adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit also includes:

[0044] If the second formaldehyde concentration change rate Yi is greater than or equal to the second threshold value Y2 and less than the third threshold value Y3, the operating frequency of the compressor of the air conditioner is adjusted to adjust the temperature in the indoor unit to the second preset temperature T2;

[0045] If the second formaldehyde concentration change rate Yi is greater than or equal to the third threshold value Y3, the temperature in the indoor unit is maintained at the first preset temperature T1;

[0046] The first preset temperature value T1 and the second preset temperature value T2 satisfy: 55°C≤T1≤60°C, T1<T2≤65°C.

[0047] Specifically, if the second formaldehyde concentration change rate Yi is greater than or equal to the third threshold value Y3, it means that the formaldehyde release rate of the formaldehyde adsorption module is already relatively high, and at this time, the temperature in the indoor unit only needs to maintain the first preset temperature T1.

[0048] Specifically, if the second formaldehyde concentration change rate Yi is greater than or equal to the second threshold value Y2 and less than the third threshold value Y3, it means that the formaldehyde release rate of the formaldehyde adsorption module is low. By adjusting the temperature in the indoor unit to the second preset temperature T2 (maximum temperature value, increasing the temperature in the indoor unit), while increasing the formaldehyde release rate of the formaldehyde adsorption module, it is also beneficial for the formaldehyde adsorption module to release formaldehyde gas more thoroughly, thereby improving the formaldehyde adsorption reliability of the formaldehyde adsorption module during repeated use.

[0049] Specifically, the operating frequency of the compressor in the heating condition may be adjusted to adjust the inner pipe temperature of the compressor, thereby adjusting the temperature in the indoor unit.

[0050] like Figure 1 and Figure 2 As shown, the method for adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit also includes: if the second formaldehyde concentration change rate Yi is less than the second threshold value Y2, the air conditioner operates in the user-set working mode. In this way, after the formaldehyde gas of the formaldehyde adsorption module is released (the second formaldehyde concentration change rate Yi is less than the second threshold value Y2), the air conditioner can automatically restore the working mode set by the user, further improving the user's experience.

[0051] Specifically, if the second formaldehyde concentration change rate Yi is less than the second threshold value Y2, it means:

[0052] 1. The formaldehyde concentration sensor may have false detection or the formaldehyde adsorption module may have transient release (one-time release due to local aging of materials, etc.), that is, before the speed of the fan device and the frequency of the compressor are adjusted, the formaldehyde adsorption module does not release a large amount of formaldehyde gas after initial heating, proving that the formaldehyde adsorption module has not reached the saturation state. At this time, it can run in the working mode set by the user.

[0053] 2. The second formaldehyde concentration change rate Yi caused by the formaldehyde gas released per unit time by the formaldehyde adsorption module is already very small, that is, the formaldehyde adsorption module has basically completed desorption, and now it can run in the working mode set by the user.

[0054] like Figure 1 and Figure 2As shown, the method for obtaining the second formaldehyde concentration change rate Yi includes: re-obtaining the formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit, and calculating the second formaldehyde concentration change rate Yi. In this way, the recalculated second formaldehyde concentration change rate Yi is actually the formaldehyde concentration change rate in the indoor unit after the formaldehyde adsorption module is preliminarily heated, and adjusting the exhaust flow rate, exhaust flow rate and temperature based on this can not only accurately determine whether the formaldehyde adsorption module is saturated and its desorption degree, but also make the adjustment process more in line with the actual formaldehyde release state of the formaldehyde adsorption module, further increasing the desorption speed of the formaldehyde adsorption module.

[0055] like Figure 1 and Figure 2 As shown, the method for obtaining formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit includes: using a formaldehyde concentration sensor to detect the formaldehyde concentration value in the gas in the indoor unit; the formula for calculating the formaldehyde concentration change rate Y is:

[0056]

[0057] Among them, C2 is the detection value of the formaldehyde concentration sensor at time t2, C1 is the detection value of the formaldehyde concentration sensor at time t1, (t2-t1) is the detection interval B of the formaldehyde concentration sensor, before the air conditioner operates in the first exhaust mode, the detection interval B1 of the formaldehyde concentration sensor satisfies: 0S<B1<10s, and in the process of re-acquiring the formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit, the detection interval B2 of the formaldehyde concentration sensor satisfies: 1s≤B1≤5s. In this way, the above setting not only provides a calculation basis for the formaldehyde concentration change rate Y, but also limits the detection interval of the formaldehyde concentration sensor at different stages, so as to further improve the detection accuracy of the formaldehyde concentration sensor and ensure that the calculated formaldehyde concentration change rate Y can accurately reflect the actual formaldehyde release state of the formaldehyde adsorption module.

[0058] Preferably, before the air conditioner operates in the first exhaust mode, the detection interval time B1 of the formaldehyde concentration sensor satisfies: 0S<B1<5s.

[0059] Specifically, before the air conditioner is operated in the first exhaust mode, the detection of the formaldehyde concentration sensor is actually a normalized detection, that is, as long as the air conditioner is turned on, the formaldehyde concentration sensor starts to detect continuously, so as to timely trigger the subsequent control process through the formaldehyde concentration sensor. Therefore, the detection interval time B1 of this stage can be set to be smaller (i.e. less than 1S) to improve the detection accuracy, but it should not be too large to ensure that the formaldehyde gas does not flow back into the room. In the process of re-acquiring the formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit, the formaldehyde gas release process of the heated formaldehyde adsorption module is dynamic, so the detection interval time B2 of this stage cannot be set too small (i.e. it needs to be greater than 1s) to reduce the error caused by the dynamic concentration change, so as to ensure that the calculated formaldehyde concentration change rate Y can more accurately reflect the actual formaldehyde release state of the formaldehyde adsorption module.

[0060] In this embodiment, the method for switching the air conditioner to the exhaust mode includes: controlling the air guide plate of the indoor unit to close, controlling the air inlet of the indoor unit to open, and turning on the fan device for exhausting air in the indoor unit. In this way, the above arrangement can not only prevent formaldehyde gas from flowing back into the room from the air outlet with a larger area, but also increase the wind pressure at the air inlet, further reducing the possibility of formaldehyde gas flowing back into the room.

[0061] like Figure 1 and Figure 2 As shown, the air conditioner control method also includes: after adjusting the exhaust flow rate or exhaust flow rate of the air conditioner according to the second formaldehyde concentration change rate Yi in the indoor unit, and adjusting the temperature in the indoor unit, controlling the continuous operation time A of the air conditioner, and repeating the adjustment process of the exhaust flow rate or exhaust flow rate of the air conditioner and the adjustment process of the temperature in the indoor unit, until the air conditioner operates in the working mode set by the user. In this way, after the air conditioner continues to run for a period of time A, the above setting can re-acquire the second formaldehyde concentration change rate Yi in the indoor unit, and further adjust the exhaust flow rate or exhaust flow rate of the air conditioner and the temperature in the indoor unit, so that the exhaust flow rate or exhaust flow rate of the air conditioner and the temperature in the indoor unit can be dynamically matched with the formaldehyde gas release process of the formaldehyde adsorption module, further reducing the time required for the desorption process of the formaldehyde adsorption module, and also improving the user experience.

[0062] Specifically, after the air conditioner is controlled to run continuously for time A, the formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit is obtained again, and the second formaldehyde concentration change rate Yi is recalculated. Based on the recalculated second formaldehyde concentration change rate Yi, the relationship between the second formaldehyde concentration change rate Yi, the second threshold value Y2 and the third threshold value Y3 is re-determined, and then the above-mentioned air conditioner exhaust flow rate or exhaust flow rate adjustment process and the indoor unit temperature adjustment process are repeated until the second formaldehyde concentration change rate Yi is less than the second threshold value Y2, and the air conditioner is restored to work in the working mode set by the user.

[0063] It can be seen that the air conditioning control method of this embodiment has the following advantages:

[0064] 1. It realizes real-time monitoring of whether the formaldehyde adsorption module has desorbed, thus avoiding the possibility of the formaldehyde gas released by adsorption flowing back into the room to a great extent;

[0065] 2. The formaldehyde adsorption module can be restored and reused, reducing the user's cost;

[0066] 3. The formaldehyde concentration change rate is used as the judgment standard for each step, avoiding the influence of formaldehyde gas released by decoration building materials on the air conditioner control method, and the entire control process has high accuracy;

[0067] 4. It does not conflict with the original operation mode of the air conditioner. That is, if the formaldehyde adsorption module in the running air conditioner desorbs, the air conditioner can automatically adjust to the desorption mode, and after the operation is completed and the formaldehyde adsorption module can be used again, it will resume to the mode set by the user and continue to operate;

[0068] 5. The multiple judgment and adjustment methods make the formaldehyde adsorption module have a higher desorption speed, and the desorption process takes a shorter time, which improves the user experience.

[0069] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0070] The air conditioner control method includes: obtaining formaldehyde gas release information of a formaldehyde adsorption module in an indoor unit of the air conditioner; calculating a first formaldehyde concentration change rate Ya in the indoor unit based on the formaldehyde gas release information; if the first formaldehyde concentration change rate Ya is greater than or equal to a first threshold value Y1, controlling the air conditioner to switch to a first exhaust mode; if the first formaldehyde concentration change rate Ya is less than the first threshold value Y1, controlling the air conditioner to operate in a user-set working mode. In this way, during the operation of the air conditioner, since the formaldehyde release process of the decoration building materials is very slow, the formaldehyde concentration in the indoor unit will not change significantly (the first formaldehyde concentration change rate Ya is small). If the first formaldehyde concentration change rate Ya in the indoor unit is greater than or equal to the first threshold value Y1, it means that the formaldehyde adsorption module has begun to desorb (i.e., release formaldehyde gas into the air), and the air conditioner will switch to the exhaust mode at this time, i.e., by sucking the indoor air to the inside and outside, so as to directly take the formaldehyde gas to the outside, thereby solving the problem that the formaldehyde adsorption module in the air conditioner in the prior art causes repeated pollution of the indoor air, and ensuring the personal health of the user.

[0071] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] It should be noted that 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 are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for controlling an air conditioner, It is characterized in that include: Acquiring formaldehyde gas release information of a formaldehyde adsorption module in an indoor unit of an air conditioner; Based on the formaldehyde gas release information, calculate the first formaldehyde concentration change rate Y in the indoor unit a ; If the first formaldehyde concentration change rate Y a Greater than or equal to the first threshold Y 1 , then control the air conditioner to switch to the first exhaust mode; if the first formaldehyde concentration change rate Y a is less than the first threshold Y 1 , the air conditioner is controlled to operate in the working mode set by the user.

2. The air conditioner control method according to claim 1, It is characterized in that The first formaldehyde concentration change rate Y a Greater than or equal to the first threshold Y 1 When the compressor of the air conditioner is controlled to switch to the heating state.

3. The air conditioner control method according to claim 2, It is characterized in that The air conditioner control method further comprises: According to the second formaldehyde concentration change rate Y in the indoor unit i , adjust the exhaust flow rate or exhaust flow rate of the air conditioner, and adjust the temperature in the indoor unit to promote the formaldehyde adsorption module to release formaldehyde gas.

4. The air conditioner control method according to claim 3, It is characterized in that During the operation of the air conditioner in the first exhaust mode, the fan device for exhausting air is controlled to rotate at a first preset speed N 1 The method of adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit includes: If the second formaldehyde concentration change rate Y i Greater than or equal to the second threshold Y 2 and is less than the second threshold Y 3 , then the speed of the fan device is adjusted to the second preset speed N 2 ; If the second formaldehyde concentration change rate Y i Greater than or equal to the third threshold Y 3 , the speed of the fan device is adjusted to the third preset speed N 3 ; Among them, the first preset speed N 1 The second preset speed N 2 and the third preset speed N 3 Between: N 1 <N 2 <N 3 ≤1100rpm; the first threshold value Y 1 The second threshold value Y 2 and the third threshold value Y 3 Satisfy: 0≤Y 1 ≤0.01mg / (L·s), Y 3 >Y 1 ≥Y 2 .

5. The air conditioner control method according to claim 3, It is characterized in that When the air conditioner is operated in the first exhaust mode, the temperature in the indoor unit is adjusted to a first preset temperature T 1 ; The method of adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit also includes: If the second formaldehyde concentration change rate Y i Greater than or equal to the second threshold Y 2 and is less than the third threshold Y 3 , the operating frequency of the compressor of the air conditioner is adjusted to adjust the temperature in the indoor unit to a second preset temperature T 2 ; If the second formaldehyde concentration change rate Y i Greater than or equal to the third threshold Y 3 , the temperature in the indoor unit maintains the first preset temperature T 1 ; Among them, the first preset temperature value T 1 and the second preset temperature value T 2 Meet: 55℃≤T 1 ≤60℃, T1<T 2 ≤65℃.

6. The air conditioner control method according to claim 3, It is characterized in that The method of adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit also includes: If the second formaldehyde concentration change rate Y i Less than the second threshold Y 2 , the air conditioner operates in the working mode set by the user.

7. The air conditioner control method according to claim 3, It is characterized in that Get the second formaldehyde concentration change rate Y i The methods include: Re-acquire the formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit, and calculate the second formaldehyde concentration change rate Y i .

8. The air conditioner control method according to claim 7, It is characterized in that The method for obtaining the formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit includes: using a formaldehyde concentration sensor to detect the formaldehyde concentration value in the gas in the indoor unit; the formula for calculating the formaldehyde concentration change rate Y is: Among them, C 2 The formaldehyde concentration sensor at t 2 The detection value at time, C 1 The formaldehyde concentration sensor at t 1 The detection value at time (t 2 -t 1 ) is the detection interval time B of the formaldehyde concentration sensor. Before the air conditioner operates in the first exhaust mode, the detection interval time B of the formaldehyde concentration sensor 1 Satisfied: 0S<B 1 <10s, in the process of re-acquiring the formaldehyde gas release information of the formaldehyde adsorption module in the indoor unit, the detection interval time B of the formaldehyde concentration sensor 2 Satisfy: 1s≤B 1 ≤5s.

9. The air conditioner control method according to claim 1, It is characterized in that The method for switching the air conditioner to the exhaust mode includes: The air guide plate of the indoor unit is controlled to be closed, and the air inlet of the indoor unit is controlled to be opened, and the fan device for exhausting air in the indoor unit is turned on.

10. The air conditioner control method according to claim 3, It is characterized in that The air conditioner control method further comprises: According to the second formaldehyde concentration change rate Y in the indoor unit i After adjusting the exhaust flow rate or exhaust flow rate of the air conditioner and adjusting the temperature in the indoor unit, the air conditioner is controlled to continue running for time A, and the adjustment process of the exhaust flow rate or exhaust flow rate of the air conditioner and the adjustment process of the temperature in the indoor unit are repeated until the air conditioner runs in the working mode set by the user.

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