Household appliance control method and apparatus, and household appliance

Abstract

The application discloses a household appliance control method and device and a household appliance. The household appliance comprises a photocatalyst. The photocatalyst is used for generating active oxygen under the catalysis of a light source. The method comprises the following steps: acquiring a current wavelength of the light source; and if it is detected that the current wavelength changes relative to an initial wavelength, adjusting the light intensity of the light source, so as to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalysis of the light source. The technical scheme provided by the application can enhance the catalytic effect of the photocatalyst in the household appliance.

Description

Technical Field

[0001] This application belongs to the field of home appliance control technology, and in particular relates to a home appliance control method, device and home appliance. Background Technology

[0002] In scenarios involving the sterilization and disinfection of home appliances, such as air conditioners, the photocatalyst within the appliance typically generates oxidizing active substances under light, which then perform sterilization. However, the light source in these appliances often has multiple uses, employing different wavelengths for different functions. This wavelength conversion can affect the photocatalytic effect of the photocatalyst. Existing solutions attempt to improve the photocatalytic effect by changing the exposure time, number, or arrangement of the light sources. However, this approach is insufficient to significantly enhance the catalytic effect of photocatalysts in home appliances. Therefore, how to enhance the catalytic effect of photocatalysts in home appliances is a pressing technical problem that needs to be solved. Summary of the Invention

[0003] The embodiments of this application provide a method, apparatus and appliance for controlling home appliances, which can at least to some extent enhance the catalytic effect of photocatalysts in home appliances.

[0004] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0005] According to a first aspect of the embodiments of this application, a method for controlling a home appliance is provided. The home appliance includes a photocatalyst, which is used to generate reactive oxygen species under the catalytic action of a light source. The method includes: acquiring the current wavelength of the light source; if a change in the current wavelength relative to an initial wavelength is detected, adjusting the light intensity of the light source to stabilize the efficiency of the photocatalyst in generating reactive oxygen species under the catalytic action of the light source.

[0006] In some embodiments of this application, based on the foregoing scheme, before obtaining the current wavelength of the light source, the method further includes: recording the control time for the home appliance.

[0007] In some embodiments of this application, based on the foregoing scheme, after adjusting the light intensity of the light source, the method further includes: obtaining the control time for the home appliance; if the control time does not exceed a preset time threshold, then returning to the step of obtaining the current wavelength of the light source.

[0008] In some embodiments of this application, based on the foregoing scheme, the method further includes: if it is detected that the current wavelength has not changed relative to the initial wavelength, then obtaining the control time for the home appliance; if the control time does not exceed a preset time threshold, then returning to the step of obtaining the current wavelength of the light source.

[0009] In some embodiments of this application, based on the foregoing scheme, the method further includes: if the control time exceeds a preset time threshold, then the control of the home appliance is terminated.

[0010] In some embodiments of this application, based on the foregoing scheme, the light source includes a mercury lamp light source or an LED light source.

[0011] In some embodiments of this application, based on the foregoing scheme, if the light source includes an LED light source, before obtaining the control time for the home appliance, the method further includes: if the current wavelength is detected to be less than the initial wavelength, adjusting the cooling air volume for the home appliance.

[0012] In some embodiments of this application, based on the foregoing scheme, the home appliance further includes a driving power supply, which is used to provide electrical energy to the light source, and the adjustment of the light intensity of the light source includes: adjusting the light intensity of the light source by adjusting the input power of the driving power supply to provide electrical energy to the light source.

[0013] In some embodiments of this application, by detecting the current wavelength of the light source, and when the current wavelength changes relative to the initial wavelength, the light intensity of the light source is adjusted to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source. This can enhance the catalytic effect of the photocatalyst in home appliances, meet the sterilization and disinfection requirements of home appliances, and at the same time save energy and extend the life of the light source.

[0014] According to a second aspect of the embodiments of this application, a home appliance control device is provided, the home appliance including a photocatalyst, the photocatalyst being used to generate active oxygen under the catalytic action of a light source, the device including: an acquisition unit for acquiring the current wavelength of the light source; and a first adjustment unit for adjusting the light intensity of the light source if a change in the current wavelength relative to an initial wavelength is detected, so as to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source.

[0015] According to a third aspect of the embodiments of this application, a home appliance is provided, the home appliance including a photocatalyst, the photocatalyst being used to generate reactive oxygen species under the catalytic action of a light source, the home appliance including one or more processors and one or more memories, the one or more memories storing at least one piece of program code, the at least one piece of program code being loaded and executed by the one or more processors to implement the method described in any embodiment of the first aspect above.

[0016] The beneficial effects of the embodiments of the second to third aspects described above can be referred to the beneficial effects of the first aspect and the embodiments of the first aspect described above, and will not be repeated here.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0019] Figure 1 A diagram of a photocatalytic module to which the technical solutions of the embodiments of this application can be applied is shown;

[0020] Figure 2 A flowchart of a home appliance control method according to an embodiment of this application is shown;

[0021] Figure 3 A detailed flowchart illustrating the process of adjusting the light intensity of the light source in an embodiment of this application is shown.

[0022] Figure 4 This paper presents an overall flowchart of a home appliance control method in an embodiment of the present application where the light source is a mercury lamp.

[0023] Figure 5 This paper presents an overall flowchart of a home appliance control method in an embodiment of the present application where the light source is an LED lamp.

[0024] Figure 6 A block diagram of a home appliance control device according to an embodiment of this application is shown;

[0025] Figure 7 A schematic diagram of the structure of a household appliance in an embodiment of this application is shown. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0028] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0029] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0030] The proposed home appliance control scheme can be applied to sterilization and disinfection scenarios for home appliances, such as tableware sterilizers, refrigerators, washing machines, and sterilization air conditioners, etc.

[0031] Specifically, home appliances with sterilization functions may include photocatalysts. The photocatalyst can be placed in the photocatalytic module of the home appliance. Under the catalytic action of the light source, the photocatalyst consumes substances such as oxygen and water to produce active oxygen substances, which then play a role in sterilization and disinfection.

[0032] Next, this application will combine Figure 1 This article provides a brief introduction to photocatalytic modules installed in home appliances.

[0033] See Figure 1 The diagram shows a photocatalytic module to which the technical solutions of the embodiments of this application can be applied.

[0034] like Figure 1 As shown, the photocatalytic module may include an ultraviolet lamp 103 (i.e., a light source) and a photocatalyst 104. Under the irradiation of the ultraviolet lamp 103, the photocatalyst 104 consumes substances such as oxygen and water to produce active oxygen substances. The photocatalytic module may also include a driving power supply 101 and a control circuit 102. The driving power supply 101 is used to provide power to the ultraviolet lamp 103, and the control circuit 102 is used to adjust the input power of the driving power supply 101 to the ultraviolet lamp 103, thereby adjusting the light intensity of the ultraviolet lamp 103. The photocatalytic module may also include an air inlet / outlet 105, which is used to draw the active oxygen substances generated by the photocatalyst 104 into the device or blow them out of the device to sterilize and disinfect the inside or outside of the device.

[0035] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0036] Figure 2 A flowchart of a home appliance control method according to an embodiment of this application is shown. The home appliance includes a photocatalyst, which generates reactive oxygen species under the catalytic action of a light source. This home appliance control method can be executed by a device with computing processing capabilities, such as a computing device within the home appliance. (Refer to...) Figure 2 As shown, the home appliance control method includes at least steps 210 to 230, which are described in detail below:

[0037] Step 210: Obtain the current wavelength of the light source.

[0038] In this application, after the photocatalytic module in the home appliance is turned on, the photocatalyst begins to generate active oxygen substances under the irradiation of the light source. At this time, the current wavelength of the light source can be obtained to detect in real time whether the current wavelength of the light source has changed relative to the initial wavelength.

[0039] It should be noted that the initial wavelength refers to the wavelength when the photocatalytic module is working stably (i.e., when the photocatalyst stably produces reactive oxygen species).

[0040] Step 230: If a change in the current wavelength relative to the initial wavelength is detected, the light intensity of the light source is adjusted to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source.

[0041] In practical applications, the light source (such as an ultraviolet lamp) of the photocatalytic module in home appliances has multiple uses, employing different wavelengths for different functions. For example, wavelengths of 185nm or 254nm are commonly used for sterilization, while wavelengths of 310nm or 365nm are commonly used for deodorization. Because the absorbance of the photocatalyst varies under different wavelengths of light, i.e., the photocatalytic effect differs, wavelength conversion of the light source can affect the photocatalytic effect. Therefore, if a change in the current wavelength relative to the initial wavelength is detected, the light intensity of the light source can be adjusted to enhance the absorbance of the photocatalyst, thereby stabilizing the efficiency of the photocatalyst in generating reactive oxygen species under the catalytic action of the light source.

[0042] In one embodiment of this application, the initial wavelength may be a preset wavelength for a specific function.

[0043] In one embodiment of this application, the control time for the home appliance may also be recorded before the current wavelength of the light source is obtained.

[0044] In this application, a timer can be started before the current wavelength of the light source is obtained. In other words, the timer is started after the photocatalytic module in the home appliance is turned on. Through the timer, the control time of the home appliance can be recorded and monitored in real time.

[0045] In one embodiment of this application, the light intensity of the light source can be adjusted by adjusting the input power of the driving power supply to the light source. When it is necessary to increase the light intensity of the light source, it is only necessary to increase the input power of the driving power supply to the light source.

[0046] In this embodiment, the photocatalytic effect of the photocatalyst varies under different wavelengths of light source. This is because the photocatalyst has different absorbance for different wavelengths, that is, the photocatalyst responds differently to photons of different wavelengths, resulting in different amounts of reactive oxygen species and thus different photocatalytic effects. Therefore, when the wavelength of the light source changes, the light intensity is adjusted by adjusting the input power, thereby stabilizing the photocatalytic effect.

[0047] In one embodiment of this application, after adjusting the light intensity of the light source, the following can also be performed: Figure 3 The steps are shown.

[0048] See Figure 3 This document illustrates a detailed flowchart of the process after adjusting the light intensity of the light source in an embodiment of this application. Specifically, it includes steps 250 to 270:

[0049] Step 250: Obtain the control time for the home appliance.

[0050] Step 270: If the control time does not exceed the preset time threshold, then return to the step of obtaining the current wavelength of the light source.

[0051] Furthermore, in this embodiment, if the control time exceeds a preset time threshold, the control of the home appliance is terminated.

[0052] In this embodiment, the control time for the home appliance can be monitored. If the control time does not exceed a preset time threshold, the step of obtaining the current wavelength of the light source is returned to detect again whether the current wavelength has changed relative to the initial wavelength. If it has changed, the light intensity of the light source is adjusted to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source.

[0053] It is understandable that, within the time limit set by the preset time threshold, repeated execution such as... Figure 2 Steps 210 and 230 shown are used to ensure that the light intensity of the light source is continuously adjusted within a time limit defined by a preset time threshold, so as to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source and enhance the catalytic effect of the photocatalyst in home appliances.

[0054] In this application, the light source in the photocatalytic module of the home appliance can be of various types, such as a mercury lamp light source or an LED light source.

[0055] Next, this application will be described in conjunction with the cases where the light source is a mercury lamp light source and the cases where the light source is a mercury lamp light source.

[0056] In one embodiment of this application, please refer to Figure 4 This document illustrates the overall flowchart of a home appliance control method in an embodiment of this application where the light source is a mercury lamp, specifically including steps 401 to 407:

[0057] Step 401, Begin.

[0058] Step 402: Turn on the photocatalytic module and timer.

[0059] Step 403: Detect the current wavelength λ1 of the light source (i.e., the mercury lamp).

[0060] Step 404: Determine whether the current wavelength λ1 is equal to the initial wavelength λ0. If not, proceed to step 405; if yes, proceed to step 406.

[0061] Step 405, adjust the input power of the drive power supply so that the illuminance of the light source (i.e., the mercury lamp) is: E1 = nE0(1-10 -X0 ) / (1-10 -X1In this equation, E0 is the initial light intensity of the light source (i.e., the mercury lamp); X0 is the absorbance of the photocatalyst corresponding to the initial wavelength λ0 of the light source (i.e., the mercury lamp); E1 is the adjusted light intensity of the light source (i.e., the mercury lamp); X1 is the absorbance of the photocatalyst corresponding to the current wavelength λ1 of the light source (i.e., the mercury lamp); and n is the adjustment coefficient. E0, X0, and λ0 can be preset values ​​corresponding to specific functions, such as sterilization or deodorization.

[0062] Step 406: Determine whether the control time recorded by the timer exceeds the preset time threshold. If not, proceed to step 404; if yes, proceed to step 407.

[0063] Step 407, End.

[0064] It should be noted that, Figure 4 The formula in step 405 shown can be derived as follows:

[0065] The absorbance of a photocatalyst is X0 = lg(E0 / E 出 The light intensity absorbed by the photocatalyst is: (1-10) -X0 E0; When the effects are equivalent: E0(1-10) -X0 )≈E1(1-10 -X1 ), that is, E1 = nE0(1-10 -X0 ) / (1-10 -X1 ).

[0066] Table 1 shows the luminous efficiency of mercury lamps at different wavelengths.

[0067]

[0068] Table 1

[0069] In another embodiment of this application, please refer to Figure 5 This document illustrates the overall flowchart of a home appliance control method in an LED light scenario according to an embodiment of this application, specifically including steps 501 to 510:

[0070] Step 501, Begin.

[0071] Step 502: Turn on the photocatalytic module and timer.

[0072] Step 503: Detect the current wavelength λ1 of the light source (i.e., the LED light).

[0073] Step 504: Determine whether the current wavelength λ1 is equal to the initial wavelength λ0. If not, proceed to step 505; if yes, proceed to step 509.

[0074] Step 505, adjust the input power of the driver so that the illuminance of the light source (i.e., the LED lamp) is: E1 = nE0(1-10 -X0 ) / (1-10 -X1 In this formula, E0 is the initial illuminance of the light source (i.e., the LED light); X0 is the absorbance of the photocatalyst corresponding to the initial wavelength λ0 of the light source (i.e., the LED light); E1 is the adjusted illuminance of the light source (i.e., the LED light); X1 is the absorbance of the photocatalyst corresponding to the current wavelength λ1 of the light source (i.e., the LED light); and n is the adjustment coefficient. E0, X0, and λ0 can be preset values ​​corresponding to specific functions, such as sterilization or deodorization.

[0075] Step 506: Determine whether the current wavelength λ1 is less than the initial wavelength λ0. If yes, proceed to step 507; otherwise, proceed to step 509.

[0076] Step 507: Detect the input power of the cooling airflow of the home appliance and record it as W1.

[0077] Step 508, adjust the cooling air volume as follows: F1 = nF0(W1-aE1) / (W0-aE0), where F0 is the set cooling air volume; W0 is the initially set input power; F1 is the adjusted cooling air volume; W1 is the adjusted input power; a is the illumination area; and n is the adjustment coefficient.

[0078] Step 509: Determine whether the control time recorded by the timer exceeds the preset time threshold. If not, proceed to step 504; if yes, proceed to step 510.

[0079] Step 510, End.

[0080] It should be noted that, Figure 5 The formula in step 508 shown can be derived as follows:

[0081] Air volume is positively correlated with heat generation. Initial heat generation: W0-aE0; Adjusted heat generation: W1-aE1; Adjusted air volume: F1=nF0(W1-aE1) / (W0-aE0).

[0082] In this embodiment, it can be understood that if the light source includes an LED light source, in such a way... Figure 3 Before step 230, i.e. before obtaining the control time for the home appliance, the following steps can also be performed: if the current wavelength is detected to be less than the initial wavelength, the cooling air volume for the home appliance is adjusted.

[0083] Table 2 shows the luminous efficiency of LEDs at different wavelengths.

[0084]

[0085] Table 2

[0086] As shown in Tables 1 and 2, mercury lamps and LED lamps have different luminous efficiencies. Specifically, for mercury lamps, the proportion of input power converted into light power is the same at different wavelengths. However, this is not the case for LED lamps; the shorter the wavelength, the smaller the proportion of input power converted into light power, and more energy is converted into heat. Therefore, compared to mercury lamps, the technical solution proposed in this embodiment can effectively solve the problem of heat dissipation when adjusting the light intensity of LED lamps according to wavelength changes.

[0087] As can be seen, in this application, by detecting the current wavelength of the light source, and when the current wavelength changes relative to the initial wavelength, the light intensity of the light source is adjusted to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source. This can enhance the catalytic effect of the photocatalyst in home appliances, meet the sterilization and disinfection requirements of home appliances, and at the same time save energy and extend the life of the light source.

[0088] The following describes an embodiment of the apparatus described in this application, which can be used to execute the home appliance control method described in the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the home appliance control method described above.

[0089] See Figure 6 The diagram shows a block diagram of a home appliance control device according to an embodiment of this application. The home appliance includes a photocatalyst, which is used to generate active oxygen under the catalytic action of a light source.

[0090] like Figure 6 As shown, the home appliance control device 600 according to an embodiment of this application includes: an acquisition unit 601 and a first adjustment unit 602.

[0091] The acquisition unit 601 is used to acquire the current wavelength of the light source; the first adjustment unit 602 is used to adjust the light intensity of the light source if a change in the current wavelength is detected relative to the initial wavelength, so as to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source.

[0092] In some embodiments of this application, based on the foregoing scheme, the device further includes: a start-up unit, used to record the control time for the home appliance before acquiring the current wavelength of the light source.

[0093] In some embodiments of this application, based on the foregoing scheme, the first adjustment unit 602 is configured to: after adjusting the light intensity of the light source, obtain the control time for the home appliance; if the control time does not exceed a preset time threshold, return to the step of obtaining the current wavelength of the light source.

[0094] In some embodiments of this application, based on the foregoing scheme, the first adjustment unit 602 is further configured to: if it is detected that the current wavelength has not changed relative to the initial wavelength, then obtain the control time for the home appliance; if the control time does not exceed a preset time threshold, then return to the step of obtaining the current wavelength of the light source.

[0095] In some embodiments of this application, based on the foregoing scheme, the first adjustment unit 602 is further configured to: terminate the control of the home appliance if the control time exceeds a preset time threshold.

[0096] In some embodiments of this application, based on the foregoing scheme, the light source includes a mercury lamp light source or an LED light source.

[0097] In some embodiments of this application, based on the foregoing scheme, if the light source includes an LED light source, the device further includes: a second adjustment unit, used to adjust the cooling air volume for the home appliance if the current wavelength is detected to be less than the initial wavelength before acquiring the control time for the home appliance.

[0098] In some embodiments of this application, based on the foregoing scheme, the home appliance further includes a driving power supply, which is used to provide power to the light source, and the first adjustment unit 602 is configured to adjust the light intensity of the light source by adjusting the input power of the driving power supply to provide power to the light source.

[0099] Based on the same inventive concept, this application also provides a household appliance that includes a photocatalyst, which is used to generate reactive oxygen species under the catalytic action of a light source. (Reference) Figure 7 The diagram shows a structural schematic of a home appliance in an embodiment of this application. The home appliance includes one or more memories 704, one or more processors 702, and at least one computer program (program code) stored in the memory 704 and executable on the processor 702. When the processor 702 executes the computer program, it implements the home appliance control method as described above.

[0100] Among them, Figure 7In this document, a bus architecture (represented by bus 700) is used. Bus 700 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 702 and memory represented by memory 704. Bus 700 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 705 provides an interface between bus 700 and receiver 701 and transmitter 703. Receiver 701 and transmitter 703 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 702 is responsible for managing bus 700 and general processing, while memory 704 can be used to store data used by processor 702 during operation.

[0101] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0102] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0103] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0104] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0105] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for controlling household appliances, characterized in that, The home appliance includes a photocatalyst, which is used to generate reactive oxygen species under the catalytic action of a light source. The method includes: Record the control time for the home appliance and obtain the current wavelength of the light source; If a change in the current wavelength relative to the initial wavelength is detected, the light intensity of the light source is adjusted to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source. Obtain the control time for the said home appliance; If the control time does not exceed the preset time threshold, the process returns to the step of obtaining the current wavelength of the light source; if the control time exceeds the preset time threshold, the control of the home appliance ends.

2. The method according to claim 1, characterized in that, The method further includes: If it is detected that the current wavelength has not changed relative to the initial wavelength, then the control time for the home appliance is obtained; If the control time does not exceed the preset time threshold, then return to the step of obtaining the current wavelength of the light source.

3. The method according to claim 1, characterized in that, The light source includes a mercury lamp or an LED lamp.

4. The method according to claim 3, characterized in that, If the light source includes an LED light source, the method further includes, before obtaining the control time for the home appliance: If the current wavelength is detected to be less than the initial wavelength, the cooling airflow for the appliance is adjusted.

5. The method according to claim 1, characterized in that, The household appliance also includes a driving power supply, which provides electrical energy to the light source. Adjusting the light intensity of the light source includes: The light intensity of the light source is adjusted by regulating the input power of the driving power supply to provide electrical energy to the light source.

6. A control device for household appliances, characterized in that, The home appliance includes a photocatalyst, which is used to generate reactive oxygen species under the catalytic action of a light source. The device includes: A start-up unit is used to record the control time for the home appliance; An acquisition unit is used to acquire the current wavelength of the light source; The first adjustment unit is configured to adjust the light intensity of the light source to stabilize the efficiency of the photocatalyst in generating active oxygen under the catalytic action of the light source if a change in the current wavelength is detected relative to the initial wavelength; acquire the control time for the home appliance; if the control time does not exceed a preset time threshold, return to the step of acquiring the current wavelength of the light source; if the control time exceeds the preset time threshold, terminate the control of the home appliance.

7. A household appliance, characterized in that, The home appliance includes a photocatalyst for generating reactive oxygen species under the catalytic action of a light source, and includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to implement the method as described in any one of claims 1-5.

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