Refrigerator and refrigerator control method

Abstract

The application discloses a refrigerator and a refrigerator control method, wherein the gas concentration in the refrigerating chamber is acquired, and whether there is an odor in the refrigerating chamber is determined according to the gas concentration; when there is an odor in the refrigerating chamber, a target odor level corresponding to the gas concentration is determined according to a preset odor level table; the target operation intensity of the air purification device is determined according to the volume of the refrigerating chamber and the target odor level in combination with a preset operation strategy table; the air purification device is controlled to operate at the target operation intensity, and in the operation process of the air purification device, if it is determined that the odor level changes, the air purification device is controlled to operate at the operation intensity corresponding to the changed odor level until there is no odor in the refrigerating chamber. According to the application, the operation intensity of the air purification device can be automatically adjusted according to the different volumes of the refrigerator and the different odor concentrations, the effect of quickly deodorizing and reducing the risk of ozone generated by the air purification device is realized, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerators, in particular to a refrigerator and a refrigerator control method. BACKGROUND

[0002] With the improvement of people's living standards, the types of food stored in the refrigerator are also increasing, and the food will emit various odors, which causes the odor problem in the refrigerator to become one of the main pain points of refrigerator users. At present, there are many refrigerator odor removal technologies, for example, there are technologies that use physical adsorption principles such as filtration and activated carbon adsorption, which are not obvious in effect and are easy to saturate; there are also technologies that use ion discharge, sharp discharge and other technologies to generate positive and negative ions and ozone for odor removal, which are effective and have long service life, but long-term operation can cause the concentration of ozone to rise, and high-concentration ozone can cause harm to human health.

[0003] At the same time, with the development of the intelligent trend of home appliances, many refrigerator manufacturers install gas sensor modules in the refrigerator, use gas sensors to monitor the odor in the refrigerator in real time, and link air purification devices to remove the odor in the refrigerator to achieve the purpose of intelligent odor removal, but due to the development of current gas sensor technology, the gas sensor may not respond or over-respond to some gases, causing the air purification device to run continuously, resulting in excessive ozone concentration. Therefore, many refrigerator manufacturers will set the air purification device to turn on for a period of time and then turn off for a period of time, and operate according to this rule for a certain period of time to reduce the accumulation of ozone.

[0004] However, existing refrigerator products vary in size, and the gas sensor senses the concentration of gas. The larger the space in the refrigerator, the more odor the same concentration will produce, which means that the larger the space, the more negative ions or ozone the air purification device needs to produce to eliminate odor gas, that is, the air purification device needs to be turned on for a short time rather than increasing its operating cycle to produce more negative ions or ozone to achieve rapid odor removal. The risk of ozone production by the air purification device is still large, and the user experience is poor. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a refrigerator and a refrigerator control method that can automatically adjust the operating intensity of the air purification device according to the different volumes of the refrigerator and the different odor concentrations, achieve the effect of rapid odor removal and reduce the risk of ozone production by the air purification device, and improve the user experience.

[0006] To achieve the above purpose, the embodiments of the present application provide a refrigerator, which comprises:

[0007] A refrigeration air duct is in communication with the refrigeration chamber of the refrigerator and is used to provide a flow channel for the gas in the refrigeration chamber.

[0008] a gas sensor arranged in the refrigeration chamber and configured to detect a gas concentration in the refrigeration chamber;

[0009] an air purification device arranged in the refrigeration air duct and configured to purify the gas in the refrigeration chamber;

[0010] a controller configured to:

[0011] acquire the gas concentration in the refrigeration chamber and determine whether there is an odor in the refrigeration chamber according to the gas concentration;

[0012] when there is an odor in the refrigeration chamber, determine a target odor level corresponding to the gas concentration according to a preset odor level table, wherein the odor level table includes m concentration intervals and m odor levels corresponding to the m concentration intervals, and m≥2;

[0013] determine a target operation intensity of the air purification device according to the volume of the refrigeration chamber and the target odor level, in combination with a preset operation strategy table, wherein the operation strategy table includes n volume intervals, m odor levels corresponding to each volume interval, and m operation intensities, and n≥1;

[0014] control the air purification device to operate at the target operation intensity, and if it is determined that the odor level changes during the operation of the air purification device, control the air purification device to operate at an operation intensity corresponding to the changed odor level until there is no odor in the refrigeration chamber.

[0015] Further, the gas sensor is configured to represent the change of the gas concentration by the change of the output voltage value; and the controller determines whether there is an odor in the refrigeration chamber according to the gas concentration, specifically including:

[0016] determining whether the output voltage value of the gas sensor corresponding to the gas concentration is less than a preset first voltage threshold;

[0017] if yes, it is determined that there is no odor in the refrigeration chamber;

[0018] if no, it is determined that there is an odor in the refrigeration chamber.

[0019] Further, the operation intensity of the air purification device is represented by operation time and downtime, different operation intensities correspond to different operation times, and the higher the operation intensity, the longer the corresponding operation time; different volume intervals and different odor levels correspond to different operation intensities, and the larger the volume interval and the higher the odor level, the higher the corresponding operation intensity.

[0020] Further, the controller controls the air purification device to operate according to the target operation intensity, specifically comprising:

[0021] The air purification device is controlled to operate according to the target operation time and the target shutdown time in the target operation intensity; wherein in each cycle, the air purification device is first controlled to operate for the target operation time, and then the air purification device is controlled to shutdown for the target shutdown time.

[0022] Further, the i-th volume interval in the operation strategy table is: (i*100-50, i*100+50], the operation time in the j-th operation intensity corresponding to the j-th odor level corresponding to the i-th volume interval is: t j +(k j *(i-1)*(i-2)+1)*R j ; wherein t j represents the basic operation time corresponding to the j-th operation intensity, k j represents the constant coefficient corresponding to the j-th operation intensity, R j represents the time increase amplitude corresponding to the j-th operation intensity, and the greater the operation intensity, the greater the corresponding basic operation time, constant coefficient and time increase amplitude, i=2, 3, …, n, j=1, 2, …, m.

[0023] In order to achieve the above purpose, the embodiment of the application also provides a refrigerator control method, which is suitable for any one of the above-mentioned refrigerators, and the method is executed by the controller, and the method comprises:

[0024] Obtaining the gas concentration in the refrigerating chamber, and determining whether there is odor in the refrigerating chamber according to the gas concentration;

[0025] When there is odor in the refrigerating chamber, determining the target odor level corresponding to the gas concentration according to a preset odor level table; wherein the odor level table comprises m concentration intervals and m odor levels corresponding thereto, and m≥2;

[0026] According to the volume of the refrigerating chamber and the target odor level, and combining a preset operation strategy table, the target operation intensity of the air purification device is determined; wherein the operation strategy table comprises n volume intervals, m odor levels corresponding to each volume interval and m operation intensities, and n≥1;

[0027] The air purification device is controlled to operate according to the target operation intensity, and in the operation process of the air purification device, if it is determined that the odor level changes, the air purification device is controlled to operate according to the operation intensity corresponding to the changed odor level until there is no odor in the refrigerating chamber.

[0028] Further, the gas sensor is configured to represent a change in the gas concentration by a change in the output voltage value; and the determining whether there is an odor in the refrigeration chamber according to the gas concentration specifically includes:

[0029] determining whether the output voltage value of the gas sensor corresponding to the gas concentration is less than a preset first voltage threshold value;

[0030] if yes, determining that there is no odor in the refrigeration chamber;

[0031] if no, determining that there is an odor in the refrigeration chamber.

[0032] Further, the operation intensity of the air purification device is represented by the operation time and the downtime, different operation intensities correspond to different operation times, and the higher the operation intensity, the longer the corresponding operation time; different volume intervals and different odor levels correspond to different operation intensities, and the larger the volume interval and the higher the odor level, the higher the corresponding operation intensity.

[0033] Further, the control of the air purification device according to the target operation intensity specifically includes:

[0034] controlling the air purification device to operate in a target operation time and a target downtime in the target operation intensity in a cycle; wherein in each cycle, the air purification device is first controlled to operate for the target operation time, and then the air purification device is controlled to stop for the target downtime.

[0035] Further, the i th volume interval in the operation strategy table is (i*100-50, i*100+50], the operation time in the j th odor level corresponding to the j th operation intensity corresponding to the i th volume interval is t j +(k j *(i-1)*(i-2)+1)*R j ; wherein t j represents the basic operation time corresponding to the j th operation intensity, k j represents the constant coefficient corresponding to the j th operation intensity, R j represents the time increase amplitude corresponding to the j th operation intensity, and the larger the operation intensity, the larger the corresponding basic operation time, constant coefficient and time increase amplitude, i=2, 3, …, n, j=1, 2, …, m.

[0036] Compared with the prior art, the refrigerator and the refrigerator control method provided by the embodiment of the application have the advantages that the refrigerator comprises: a refrigeration air duct, which is in communication with a refrigeration chamber of the refrigerator and is used to provide a flow channel for gas in the refrigeration chamber; a gas sensor, which is arranged in the refrigeration chamber and is used to detect the gas concentration in the refrigeration chamber; an air purification device, which is arranged in the refrigeration air duct and is used to purify the gas in the refrigeration chamber; and a controller, which is used to: acquire the gas concentration in the refrigeration chamber, and determine whether there is an odor in the refrigeration chamber according to the gas concentration; when there is an odor in the refrigeration chamber, determine a target odor level corresponding to the gas concentration according to a preset odor level table; wherein the odor level table comprises m concentration intervals and m odor levels corresponding to the m concentration intervals, and m is greater than or equal to 2; determine a target operation intensity of the air purification device according to the volume of the refrigeration chamber and the target odor level, in combination with a preset operation strategy table; wherein the operation strategy table comprises n volume intervals, m odor levels corresponding to each volume interval, and m operation intensities, and n is greater than or equal to 1; control the air purification device to operate at the target operation intensity, and if it is determined that the odor level changes in the operation process of the air purification device, control the air purification device to operate at an operation intensity corresponding to the changed odor level, until there is no odor in the refrigeration chamber; thereby the operation intensity of the air purification device can be automatically adjusted according to the different volumes of the refrigerator and the different odor concentrations, the effect of quickly purifying odor and reducing the risk of ozone generated by the air purification device is achieved, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a schematic diagram of a refrigerator shell provided by the embodiment of the application;

[0038] Figure 2 is a schematic diagram of the internal structure of a refrigerator provided by the embodiment of the application;

[0039] Figure 3 is a work flow chart of a controller of a refrigerator provided by the embodiment of the application;

[0040] Figure 4 is another work flow chart of a controller of a refrigerator provided by the embodiment of the application;

[0041] Figure 5 is an application example work flow chart of a controller of a refrigerator provided by the embodiment of the application;

[0042] Figure 6 is another application example work flow chart of a controller of a refrigerator provided by the embodiment of the application;

[0043] Figure 7 is still another application example work flow chart of a controller of a refrigerator provided by the embodiment of the application;

[0044] Figure 8 is a flowchart of a refrigerator control method provided by an embodiment of the present application;

[0045] Figure 9 is another flowchart of a refrigerator control method provided by an embodiment of the present application;

[0046] Figure 10 is a flowchart of a refrigerator control method provided by an embodiment of the present application. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, any other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0048] Referring to Figure 1 and Figure 2 , wherein, Figure 1 is a schematic diagram of a refrigerator shell provided by an embodiment of the present application, Figure 2 is a schematic diagram of an internal structure of a refrigerator provided by an embodiment of the present application; as Figure 1 shown, the refrigerator 100 at least includes a refrigeration chamber and a refrigeration air duct, the refrigeration air duct is in communication with the refrigeration chamber, and the refrigeration air duct is used to provide a flow passage for gas in the refrigeration chamber.

[0049] As Figure 2 shown, in the embodiment of the present application, the refrigerator 100 further includes a gas sensor 10, the gas sensor 10 is arranged in the refrigeration chamber, and the gas sensor 10 is further connected with the controller 30 in the following; the gas sensor 10 is used to detect the gas concentration in the refrigeration chamber in real time and send the detected gas concentration to the controller 30 for corresponding purification control processing by the controller 30.

[0050] As Figure 2 shown, in the embodiment of the present application, the refrigerator 100 further includes an air purification device 20, the air purification device 20 is arranged in the refrigeration air duct, and the air purification device 20 is further connected with the controller 30; the air purification device 20 is controlled by the controller 30, and the air purification device 20 is used to purify the odor gas in the refrigeration chamber when starting to run.

[0051] It should be noted that the air purification device 20 used in the embodiments of the present invention can be an existing mature product, such as an ozone generator or an ion generator. The corresponding air purification working principle is as follows: when the air purification device 20 is powered on, it discharges through a dielectric barrier to ionize air molecules and generate positive and negative ions or ozone, thereby achieving the function of purifying the air. The air purification device 20 mainly consists of needle electrodes, a grounding ring, a control circuit, insulation protection, and other components.

[0052] like Figure 2 As shown, in this embodiment of the invention, the refrigerator 100 further includes a controller 30, which is used to perform corresponding purification and control of odors in the refrigerator 100 using the technical solution provided in this embodiment of the invention.

[0053] As one optional embodiment, the controller 30 is used for:

[0054] The gas concentration inside the refrigerator compartment is obtained, and the presence of any odor inside the refrigerator compartment is determined based on the gas concentration.

[0055] When there is an odor in the refrigerator compartment, the target odor level corresponding to the gas concentration is determined according to a preset odor level table; wherein, the odor level table includes m concentration ranges and their corresponding m odor levels, where m≥2;

[0056] Based on the volume of the refrigerator compartment and the target odor level, and in conjunction with a preset operation strategy table, the target operation intensity of the air purification device 20 is determined; wherein, the operation strategy table includes n volume ranges, m odor levels and m operation intensities corresponding to each volume range, where n≥1;

[0057] The air purifier 20 is controlled to operate at the target operating intensity. If the odor level changes during the operation of the air purifier 20, the air purifier 20 is controlled to operate at the operating intensity corresponding to the changed odor level until there is no odor in the refrigerator compartment.

[0058] Combination Figure 3 The diagram shown is a flowchart of a refrigerator controller according to an embodiment of the present invention. In a specific implementation of this embodiment, the controller 30 operates as follows:

[0059] The gas concentration in the refrigerator compartment is acquired in real time by the gas sensor 10. Figure 3 As shown in step S11), and based on the obtained gas concentration in the refrigerator compartment, determine whether there is an odor in the gas inside the refrigerator compartment. Figure 3the gas sensor 10, and re-determine whether the gas in the refrigerating chamber has odor, and re-perform corresponding processing according to the determination result (i.e. Figure 3 the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, query the pre-set odor level table, find out the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber from the pre-set odor level table, and determine the found odor level as the target odor level corresponding to the gas concentration in the refrigerating chamber Figure 3 the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, query the pre-set odor level table, find out the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber from the pre-set odor level table, and determine the found odor level as the target odor level corresponding to the gas concentration in the refrigerating chamber Figure 3 the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, query the pre-set odor level table, find out the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber from the pre-set odor level table, and determine the found odor level as the target odor level corresponding to the gas concentration in the refrigerating chamber Figure 3 the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, query the pre-set odor level table, find out the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber from the pre-set odor level table, and determine the found odor level as the target odor level corresponding to the gas concentration in the refrigerating chamber Figure 3 the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, query the pre-set odor level table, find out the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber from the pre-set odor level table, and determine the found odor level as the target odor level corresponding to the gas concentration in the refrigerating chamber Figure 3 the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, query the pre-set odor level table, find out the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber from the pre-set odor level table, and determine the found odor level as the target odor level corresponding to the gas concentration in the refrigerating chamber Figure 4In step S17), the odor gas in the refrigerating chamber is purified, thereby achieving the odor purification process.

[0060] It should be noted that in the embodiment of the present application, the controller 30 is provided with an odor level table and an operation strategy table in advance, so as to directly query the corresponding table content when the odor gas in the refrigerating chamber is purified. The odor level table includes m concentration intervals and m odor levels corresponding to each concentration interval, m odor levels in total, m≥2, and different concentration intervals correspond to different odor levels. The operation strategy table includes n volume intervals of the refrigerating chamber, m odor levels corresponding to each volume interval of the refrigerating chamber, and operation intensities of the air purification device 20 corresponding to each odor level, m odor levels corresponding to m operation intensities, n≥1, that is, one volume interval corresponds to m odor levels and m operation intensities, one odor level corresponds to one operation intensity under the same volume interval, different volume intervals can correspond to the same m odor levels, but different volume intervals correspond to different m operation intensities, and different odor levels correspond to different operation intensities.

[0061] It can be understood that the odor level table includes m odor levels, but does not include no odor level, that is, the m odor levels are all corresponding to the m odor levels divided when the gas in the refrigerating chamber has odor, and m≥2 is required to ensure that the embodiment of the present application can adjust the operation of the air purification device 20 according to different odor levels and different operation intensities to achieve the purpose of intelligent odor purification.

[0062] It can be understood that different types of refrigerators have different overall volumes, and the volumes of the corresponding chambers (for example, the refrigerating chamber) can also be different. Before the refrigerator is shipped, the volume of each chamber in the current refrigerator can be written into the refrigerator volume database. In the embodiment of the present application, the controller 30 can obtain the volume of the refrigerating chamber by calling the refrigerator volume database.

[0063] The refrigerator provided by the embodiment of the present application comprises a refrigeration air duct, which is communicated with a refrigeration chamber of the refrigerator and is used to provide a flow channel for gas in the refrigeration chamber; further comprises a gas sensor, which is arranged in the refrigeration chamber and is used to detect the gas concentration in the refrigeration chamber; further comprises an air purification device, which is arranged in the refrigeration air duct and is used to purify the gas in the refrigeration chamber; further comprises a controller, which is used to: acquire the gas concentration in the refrigeration chamber, and determine whether there is an odor in the refrigeration chamber according to the acquired gas concentration; when there is an odor in the refrigeration chamber, determine a target odor level corresponding to the acquired gas concentration according to a pre-set odor level table, determine a target operation intensity of the air purification device according to the volume of the refrigeration chamber and the determined target odor level, and control the air purification device to operate according to the determined target operation intensity; during the operation of the air purification device, if it is determined that the odor level changes, the air purification device is controlled to operate according to the operation intensity corresponding to the changed odor level until there is no odor in the refrigeration chamber; by using the gas sensor to monitor the gas concentration in the refrigeration chamber in real time, and controlling the air purification device to operate at different operation intensities according to the different volumes of the refrigeration chamber and the different odor levels, the embodiment of the present application can automatically adjust the operation intensity of the air purification device, which not only achieves the effect of quickly purifying odor, but also reduces the risk of ozone generated by the air purification device, prevents the ozone generated by the air purification device from causing harm to the human body, and thus improves the user experience.

[0064] As one of the optional embodiments, the gas sensor 10 is used to represent the change of the gas concentration by the change of the output voltage value; then, the controller 30 determines whether there is an odor in the refrigeration chamber according to the gas concentration, specifically comprising:

[0065] determining whether the output voltage value of the gas sensor 10 corresponding to the gas concentration is less than a pre-set first voltage threshold value;

[0066] if yes, it is determined that there is no odor in the refrigeration chamber;

[0067] if no, it is determined that there is an odor in the refrigeration chamber.

[0068] It should be noted that, in this embodiment of the invention, the gas sensor 10 is used to represent the change in gas concentration in the refrigerator compartment by the change in the output voltage value of the gas sensor 10 itself. The corresponding gas concentration in the refrigerator compartment can be determined based on the output voltage value of the gas sensor 10. For example, the resistance of the gas sensor 10 changes with the change in gas concentration in the refrigerator compartment. The change in resistance causes a change in the output voltage value. Therefore, by measuring the change in the output voltage value of the gas sensor 10, the odor concentration in the refrigerator compartment can be reflected. Accordingly, based on the change in the output voltage value of the gas sensor 10, it can be divided into m voltage intervals, each representing a different concentration interval, i.e., corresponding to m odor levels.

[0069] Combination Figure 4 The diagram shown is another workflow diagram of a refrigerator controller provided in an embodiment of the present invention. Based on the above embodiment, the specific working process of the controller 30 in a specific implementation of the present invention is as follows:

[0070] When determining whether there is an odor in the gas inside the refrigerator compartment based on the obtained gas concentration, the output voltage value of the gas sensor 10 corresponding to the gas concentration inside the refrigerator compartment can be determined to determine whether the output voltage value of the gas sensor 10 corresponding to the gas concentration inside the refrigerator compartment is less than a preset first voltage threshold V1. Figure 4 Step S121 (as shown); when the output voltage value of the gas sensor 10 corresponding to the gas concentration in the refrigerator compartment is less than the preset first voltage threshold V1, it is determined that the gas in the refrigerator compartment has no odor. Figure 3 As shown in step S122), at this point, you can return. Figure 4 The process continues with step S11, and then proceeds to subsequent steps; when the output voltage value of the gas sensor 10 corresponding to the gas concentration in the refrigerator compartment is not less than a preset first voltage threshold V1, it is determined that the gas in the refrigerator compartment has an odor. Figure 3 As shown in step S123), at this point, you can return. Gas sensor output voltage value v The steps shown in step S13 are executed, and subsequent steps are performed.

[0071] For example, taking m=3 as an example, the pre-set odor level table is shown in Table 1, and the gas sensor output voltage value v is divided into three voltage intervals (i.e. corresponding to three concentration intervals) by three voltage thresholds of the first voltage threshold V1, the second voltage threshold V2 and the third voltage threshold V3. The odor level is divided into three odor levels according to the sensitivity of human senses to odor, and the three odor levels are slight odor level, moderate odor level and obvious odor level. When the gas sensor output voltage value v satisfies V1≤v<V2, the corresponding odor level is slight odor level; when the gas sensor output voltage value v satisfies V2≤v<V3, the corresponding odor level is moderate odor level; and when the gas sensor output voltage value v satisfies v≥V3, the corresponding odor level is obvious odor level. It can be understood that when the gas sensor output voltage value v satisfies v<V1, it is determined that the gas in the refrigerating chamber has no odor.

[0072] Table 1 Odor level table

[0073] V1≤ v < V2 V2≤ v < V3 v≥ V3 Offensive odour level Slight offensive odour level Moderate offensive odour level Strong offensive odour level Figure 5

[0074] Referring to Figure 5 As shown in FIG. 13, which is an application example workflow diagram of a controller of a refrigerator provided by an embodiment of the present application, in the actual working process: when the controller 30 determines the target odor level corresponding to the gas concentration in the refrigerating chamber according to the pre-set odor level table, in combination with Table 1, the output voltage value v of the gas sensor 10 corresponding to the gas concentration in the refrigerating chamber is compared with the second voltage threshold V2 and the third voltage threshold V3 (it has been determined that v<V1) Figure 5 as shown in step S131), to determine whether the output voltage value v of the gas sensor 10 corresponding to the gas concentration in the refrigerating chamber satisfies V1≤v<V2 Figure 5 as shown in step S132), if V1≤v<V2 is satisfied, it is determined that the target odor level corresponding to the gas concentration in the refrigerating chamber is slight odor level Figure 5 as shown in step S133); if V1≤v<V2 is not satisfied, it is further determined whether the output voltage value v of the gas sensor 10 corresponding to the gas concentration in the refrigerating chamber satisfies V2≤v<V3 Figure 5 as shown in step S134), if V2≤v<V3 is satisfied, it is determined that the target odor level corresponding to the gas concentration in the refrigerating chamber is moderate odor level Figure 5 as shown in step S135); if V2≤v<V3 is not satisfied, it is further determined whether the output voltage value v of the gas sensor 10 corresponding to the gas concentration in the refrigerating chamber satisfies v≥V3 Figure 5If v≥V3, it is determined that the target odor level corresponding to the gas concentration in the refrigeration chamber is the obvious odor level (step S136). Figure 6 (step S137).

[0075] It should be noted that the odor level table shown in Table 1 specifically includes 3 voltage intervals and 3 odor levels, which is only an example of odor level division and does not constitute a limitation on odor levels. Other numbers of voltage intervals and odor levels (for example, m=2 or 4 or 5, etc.) can be included in the odor level table, and the embodiments of the present application are not limited specifically.

[0076] As one of the optional embodiments, the operation intensity of the air purification device 20 is represented by the operation time and the downtime. Different operation intensities correspond to different operation times, and the higher the operation intensity, the longer the corresponding operation time. Different volume intervals and different odor levels correspond to different operation intensities, and the larger the volume interval and the higher the odor level, the higher the corresponding operation intensity.

[0077] Specifically, in combination with the above embodiments, the operation intensity of the air purification device 20 can be distinguished by setting the operation time and downtime of the air purification device 20. Different operation intensities correspond to different operation times, and different operation intensities can have the same or different downtime. The higher the operation intensity, the longer the corresponding operation time. Further, based on the correspondence between the volume interval, the odor level and the operation intensity, the larger the volume interval (specifically, the larger the volume value in the volume interval), the higher the odor level, and the higher the corresponding operation intensity. For example, under the same volume interval, the higher the odor level, the higher the corresponding operation intensity, and under the same odor level, the larger the volume interval, the higher the corresponding operation intensity.

[0078] For example, in combination with Table 1, the operation intensity table of the air purification device 20 is shown in Table 2. Three odor levels correspond to three operation intensities. The slight odor level corresponds to the first operation intensity, the moderate odor level corresponds to the second operation intensity, and the obvious odor level corresponds to the third operation intensity. The operation time of the first operation intensity is t1, and the downtime is t0. The operation time of the second operation intensity is t2, and the downtime is t0. The operation time of the third operation intensity is t3, and the downtime is t0, and t1

[0079] Table 2 Operation Intensity Table

[0080]

[0081] It can be understood that when it is determined that the gas in the refrigeration chamber has an odor, the air purification device 20 can be controlled to operate at different operating intensities according to the operating intensity shown in Table 2; when it is determined that the gas in the refrigeration chamber has no odor, the air purification device 20 does not operate.

[0082] As one of the optional embodiments, the controller 30 controls the air purification device 20 to operate at the target operating intensity, specifically including:

[0083] The air purification device 20 is controlled to operate at the target operating time and the target shutdown time in the target operating intensity; wherein in each cycle, the air purification device 20 is first controlled to operate continuously for the target operating time, and then the air purification device 20 is controlled to operate continuously for the target shutdown time.

[0084] Specifically, in combination with the above embodiment, when the controller 30 controls the air purification device 20 to operate at the determined target operating intensity, it needs to control the air purification device 20 to operate at the target operating time and the target shutdown time included in the determined target operating intensity. In each cycle, the air purification device 20 is first controlled to operate continuously for the target operating time, and then the air purification device 20 is controlled to operate continuously for the target shutdown time.

[0085] For example, in combination with Table 2, when the air purification device 20 is actually controlled to operate at the second operating intensity, the air purification device 20 needs to be controlled to be turned on for t2 seconds, turned off for t0 seconds, turned on for t2 seconds, turned off for t0 seconds, and so on. Cycle until it is determined that the gas in the refrigeration chamber has no odor, stop the cycle corresponding to the second operating intensity, or until it is determined that the odor level of the gas in the refrigeration chamber changes and the changed operating intensity corresponding to the changed odor level is the first operating intensity, then continue to control the air purification device 20 to operate at the first operating intensity. Similarly, when the air purification device 20 is actually controlled to operate at the first operating intensity, the air purification device 20 needs to be controlled to be turned on for t1 seconds, turned off for t0 seconds, turned on for t1 seconds, turned off for t0 seconds, and so on. Cycle until it is determined that the gas in the refrigeration chamber has no odor, stop the cycle corresponding to the first operating intensity.

[0086] As one of the optional embodiments, the i-th volume interval in the operating strategy table is: (i*100-50, i*100+50], the operating time in the j-th operating intensity corresponding to the j-th odor level corresponding to the i-th volume interval is: t j +(k j *(i-1)*(i-2)+1)*R j ; wherein tj k represents the base running time corresponding to the j-th running intensity. j R represents the constant coefficient corresponding to the j-th running intensity. j This represents the time increase corresponding to the j-th running intensity. The greater the running intensity, the greater the corresponding base running time, constant coefficient, and time increase. i = 2, 3, ..., n, j = 1, 2, ..., m.

[0087] Specifically, in conjunction with the above embodiments, the pre-set operation strategy table includes n volume ranges of the refrigerator compartments, m odor levels corresponding to each volume range of the refrigerator compartments, and m operation intensities. When actually dividing the volume ranges of the refrigerator compartments, different volume limits can be set to divide the volume of the refrigerator compartments into n volume ranges. The endpoint values ​​of the volume ranges are the volume limits. In this embodiment of the invention, for ease of description, these n volume ranges are arranged in ascending order of their corresponding volume values. Correspondingly, the m odor levels are also arranged in ascending order of their corresponding gas concentrations, and the m operation intensities are also arranged in ascending order of their corresponding operation times.

[0088] For the i-th volume interval among the n volume intervals of the cold storage compartments contained in the operation strategy table, the specific range of its corresponding interval value is: (i*100-50, i*100+50], where i = 2, 3, ..., n.

[0089] For the j-th odor level corresponding to the i-th volume range, the specific running time is: t j +(k j *(i-1)*(i-2)+1)*R j , where t j k represents the base running time corresponding to the j-th running intensity. j k represents the constant coefficient corresponding to the j-th running intensity. j Greater than 0, R j R represents the time increase corresponding to the j-th running intensity. j The value is greater than 0, and the greater the operating intensity, the greater the increase in the base operating time, constant coefficient, and time, i.e., satisfying: t1 < t2 < ... < t j <...<t m k1 < k2 < ... < k j <...<k m R1 < R2 < ... < R j <...<R m .

[0090] It should be noted that, since i = 2, 3, ..., n, that is, starting from the second volume interval, the range of values ​​for each volume interval satisfies (i*100-50, i*100+50], and the running time for each running intensity corresponding to each volume interval satisfies t j +(k j *(i-1)*(i-2)+1)*R j Therefore, when i = 1, the range of values ​​for the first volume interval is directly set to (0, 150]. The running times for the m running intensities corresponding to the first volume interval are set to the base running times t1, t2, ..., t for the m running intensities, respectively. j 、…、t m .

[0091] For example, combining Tables 1 and 2, the pre-set operating strategy table is shown in Table 3, where k1 = 0.25, k2 = 0.5, and k3 = 0.75; when i = 1, the first volume interval is (0, 150], and the operating time in the first operating intensity corresponding to the slight odor level is the base operating time t. 11 The running time in the second running intensity corresponding to the moderate odor level is the base running time t2, and the running time in the third running intensity corresponding to the obvious odor level is the base running time t3. When i = 2, 3, ..., n, the i-th volume interval satisfies (i*100-50, i*100+50], the running time in the first running intensity corresponding to the slight odor level satisfies t1+(0.25*(i-1)*(i-2)+1)*R1, the running time in the second running intensity corresponding to the moderate odor level satisfies t2+(0.5*(i-1)*(i-2)+1)*R2, and the running time in the third running intensity corresponding to the obvious odor level satisfies t3+(0.75*(i-1)*(i-2)+1)*R3.

[0092] Table 3 Operation Strategy Table

[0093]

[0094] See Figure 6 The diagram shown is a flowchart illustrating another application example of a refrigerator controller provided in this embodiment of the invention. Referring to Tables 1 to 3, the actual operation of the controller 30 is as follows:

[0095] The gas concentration in the refrigerator compartment is acquired in real time by the gas sensor 10. Figure 6 As shown in step S21), and based on the obtained gas concentration in the refrigerator compartment, determine whether there is an odor in the gas inside the refrigerator compartment. Figure 6S22) ; when it is determined that the gas in the refrigerating chamber has no odor, the gas concentration in the refrigerating chamber can be re-acquired by the gas sensor 10, and it is re-determined whether the gas in the refrigerating chamber has odor, and corresponding processing is re-performed according to the determination result (i.e. Figure 6 S22 returns to S21, and the subsequent steps are continuously executed) ; when it is determined that the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, table 1 is inquired, and from table 1, the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber is found out, which is a slight odor level Figure 6 S23) ; then, according to the volume of the refrigerating chamber and the determined slight odor level, table 3 is inquired, and from table 3, the volume interval corresponding to the volume of the refrigerating chamber is found out, which is (150, 250], and under the entry corresponding to (150, 250], the running intensity corresponding to the determined slight odor level is found out, which is the first running intensity Figure 6 S24), and the running time in the first running intensity is t1+R1; then, the air purification device 20 is controlled to run in cycles according to the determined first running intensity, that is, the air purification device 20 is controlled to run in cycles according to the rule of opening for t1+R1 seconds, stopping for t0 seconds, opening for t1+R1 seconds, stopping for t0 seconds, until it is determined that the gas in the refrigerating chamber has no odor, and the cycle corresponding to the first running intensity is stopped Figure 7 S25), at this time, the purification process is ended.

[0096] Referring to Figure 7 S21), and the subsequent steps are continuously executed) ; when it is determined that the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, table 1 is inquired, and from table 1, the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber is found out, which is a slight odor level

[0097] The gas concentration in the refrigerating chamber is acquired in real time by the gas sensor 10 Figure 7 S31), and according to the obtained gas concentration in the refrigerating chamber, it is determined whether the gas in the refrigerating chamber has odor Figure 7 S32) ; when it is determined that the gas in the refrigerating chamber has no odor, the gas concentration in the refrigerating chamber can be re-acquired by the gas sensor 10, and it is re-determined whether the gas in the refrigerating chamber has odor, and corresponding processing is re-performed according to the determination result (i.e. Figure 7 S32 returns to S31, and the subsequent steps are continuously executed) ; when it is determined that the gas in the refrigerating chamber has odor, first, according to the obtained gas concentration in the refrigerating chamber, table 1 is inquired, and from table 1, the odor level corresponding to the concentration interval corresponding to the gas concentration in the refrigerating chamber is found out, which is a slight odor level Figure 7the step S33) ; then according to the volume of the refrigeration chamber and the determined moderate odor grade, referring to the table 3, finding out the volume interval corresponding to the volume of the refrigeration chamber is (0, 150], under the corresponding entry of (0, 150], finding out the operation intensity corresponding to the determined moderate odor grade is the second operation intensity (t2, t0) (t2> t0) ( Figure 7 the step S34), and the operation time in the second operation intensity is t2; then, controlling the air purification device 20 to cyclically operate according to the determined second operation intensity, that is, controlling the air purification device 20 to cyclically operate according to the rule of opening for t2 seconds, stopping for t0 seconds, opening for t2 seconds, stopping for t0 seconds, and so on ( Figure 7 the step S35), and in the process of the air purification device 20 cyclically operating according to the determined second operation intensity, obtaining the current gas concentration in the refrigeration chamber in real time through the gas sensor 10, referring to the table 1 according to the current gas concentration in the refrigeration chamber, determining the current odor grade corresponding to the current gas concentration in the refrigeration chamber, and judging whether the current odor grade is the moderate odor grade, that is, judging whether the odor grade of the gas in the refrigeration chamber changes or not ( Figure 7 the step S36); if it is judged that the current odor grade is the moderate odor grade, it is judged that the odor grade of the gas in the refrigeration chamber does not change, at this time, the air purification device 20 can continue to cyclically operate according to the determined second operation intensity (that is, Figure 8 the step S36 returns to the step S35, and the subsequent steps are continued to be executed); if it is judged that the current odor grade is not the moderate odor grade, it is judged that the odor grade of the gas in the refrigeration chamber changes, and it is assumed that the odor grade changes from the moderate odor grade to the slight odor grade Figure 9 the step S37), at this time, the table 3 can be referred to again according to the volume of the refrigeration chamber and the changed odor grade (that is, the slight odor grade), under the corresponding entry of (0, 150], finding out the operation intensity corresponding to the slight odor grade is the first operation intensity (t1, t0) (t1> t0) Figure 10 the step S38), and the operation time in the first operation intensity is t1, then the air purification device 20 is controlled to cyclically operate according to the determined first operation intensity, that is, the air purification device 20 is controlled to cyclically operate according to the rule of opening for t1 seconds, stopping for t0 seconds, opening for t1 seconds, stopping for t0 seconds, and so on, until it is judged that the gas in the refrigeration chamber has no odor, the cycle corresponding to the first operation intensity is stopped Figure 10 the step S39), at this time, the purification process is ended.

[0098] It should be noted that as the refrigerator volume demand is getting larger, there are currently 100-600L refrigerator products, and as the volume of the refrigerator increases, the air purification device may not be good if it remains unchanged in the case of a large volume of the refrigerator. For example, one possible situation is that when the volume of the refrigeration chamber of the refrigerator is 400L, the odor sensor judges that the odor level is at a moderate odor level, and if the ion device is operated according to the rule of opening t2 seconds and stopping t0 seconds, the negative ions or ozone generated in a short time can remove the odor, and the user is satisfied with the odor removal effect at this time. However, when the volume of the refrigeration chamber of the refrigerator is 500L, the odor sensor judges that the odor level at this time is at a moderate odor level, and if the ion device is still operated according to the above rule for the same time, since the volume of the refrigeration chamber has increased, the total amount of odor gas has also increased, and the amount of negative ions or ozone generated is the same as before, which cannot completely remove the odor, at this time the refrigerator still has odor, causing user dissatisfaction. At the same time, since the volume of the refrigeration chamber has increased, the amount of ozone generated by the ion device per unit time remains unchanged, resulting in dilution of the ozone concentration. Therefore, when the volume of the refrigeration chamber increases, the running time of the ion device can be appropriately increased to generate more negative ions or ozone in order to remove the odor more quickly and improve user experience.

[0099] It should be noted that as the volume of the refrigeration chamber increases, the running time of the ion device corresponding to each odor level can be increased according to a certain rule (non-linear). For example, with a slight odor level, it has been verified that the larger the volume increase, the larger the space, and the worse the odor removal effect of the ion device. Because the concentration of negative ions or ozone generated per unit time is constant, negative ions and ozone are easily degraded, resulting in a decrease in the probability of contact between negative ions and ozone and odor molecules in a larger space. Therefore, if the ion device still operates according to the same rule after the volume increases, it will inevitably cause the odor removal effect to decrease. For example, in the case of a 100L volume and a slight odor level, it is found that the ion device operates for a short time with t1 seconds on and t0 seconds off, and the negative ions or ozone generated can remove the odor in this case without the risk of harm to the human body. If the volume increases, the ozone will be diluted. Therefore, by increasing the running time of the ion device each time, a faster odor removal effect can be achieved. At the same time, the larger the volume, the more widely the odor is distributed, and the longer the negative ions or ozone need to diffuse to different positions. The amount of degradation during diffusion will be greater. Therefore, the more the volume increases, the more the running time of the ion device needs to be increased in order to generate sufficient negative ions or ozone to ensure the odor removal effect.

[0100] For example, compared with the slight odor level and the moderate odor level, the odor degree of the moderate odor level is greater, so that the total amount of odor of the moderate odor level is increased more by the same volume, and therefore, under the condition of the moderate odor level, the ion device needs more running time after the volume is increased to achieve the effect of rapid deodorization.

[0101] The embodiment of the present application also provides a refrigerator control method, as shown in Figure 10 The embodiment of the present application also provides a refrigerator control method, as shown in

[0102] Step S101, obtaining the gas concentration in the refrigeration chamber, and determining whether there is odor in the refrigeration chamber according to the gas concentration;

[0103] Step S102, when there is odor in the refrigeration chamber, determining the target odor level corresponding to the gas concentration according to a preset odor level table; wherein the odor level table includes m concentration intervals and m odor levels corresponding to the m concentration intervals, and m is greater than or equal to 2;

[0104] Step S103, determining the target running intensity of the air purification device according to the volume of the refrigeration chamber and the target odor level, and combining a preset running strategy table; wherein the running strategy table includes n volume intervals, m odor levels corresponding to each volume interval, and m running intensities, and n is greater than or equal to 1;

[0105] Step S104, controlling the air purification device to run at the target running intensity, and if it is determined that the odor level changes in the running process of the air purification device, controlling the air purification device to run at the running intensity corresponding to the changed odor level until there is no odor in the refrigeration chamber.

[0106] The embodiment of the present application also provides a refrigerator control method, as shown in ​ The embodiment of the present application also provides a refrigerator control method, as shown in

[0107] Step S1011, determining whether the output voltage value of the gas sensor corresponding to the gas concentration is less than a preset first voltage threshold value;

[0108] Step S1012, if yes, determining that there is no odor in the refrigeration chamber;

[0109] Step S1013, if no, it is determined that there is an odor in the refrigeration chamber.

[0110] In some embodiments, the operation intensity of the air purification device is represented by operation time and downtime, different operation intensities correspond to different operation times, and the higher the operation intensity, the longer the corresponding operation time; different volume intervals and different odor levels correspond to different operation intensities, and the larger the volume interval and the higher the odor level, the higher the corresponding operation intensity.

[0111] Referring to ​ Fig. 1 is a flowchart of a refrigerator control method provided by an embodiment of the present application, and in some embodiments, the control of the air purification device according to the target operation intensity specifically includes:

[0112] controlling the air purification device to operate according to the target operation time and the target downtime in the target operation intensity in a cycle; wherein in each cycle, first control the air purification device to operate for the target operation time (step S1041 shown), and then control the air purification device to stop for the target downtime (step S1042 shown). ​ ​

[0113] In some embodiments, the i-th volume interval in the operation strategy table is: (i*100-50, i*100+50], the operation time in the j-th operation intensity corresponding to the j-th odor level corresponding to the i-th volume interval is: t j +(k j *(i-1)*(i-2)+1)*R j ; wherein t j represents the basic operation time corresponding to the j-th operation intensity, k j represents the constant coefficient corresponding to the j-th operation intensity, R j represents the time increase amplitude corresponding to the j-th operation intensity, and the larger the operation intensity, the larger the corresponding basic operation time, constant coefficient and time increase amplitude, i=2, 3, …, n, j=1, 2, …, m.

[0114] It should be noted that the refrigerator control method provided by the embodiment of the present application can realize all the working processes of the refrigerator described in any of the above embodiments, and the specific implementation scheme and the technical effects realized by the control method correspond to the same as described above. The specific implementation scheme and the technical effects realized by the refrigerator in the above embodiments, which will not be repeated here.

[0115] ​​In summary, the refrigerator and the refrigerator control method provided by the embodiment of the present application, the refrigerator comprises a refrigeration air duct, which is communicated with a refrigeration chamber of the refrigerator and is used to provide a flow channel for gas in the refrigeration chamber; further comprises a gas sensor, which is arranged in the refrigeration chamber and is used to detect the gas concentration in the refrigeration chamber; further comprises an air purification device, which is arranged in the refrigeration air duct and is used to purify the gas in the refrigeration chamber; further comprises a controller, which is used to: obtain the gas concentration in the refrigeration chamber, and determine whether there is an odor in the refrigeration chamber according to the obtained gas concentration; when there is an odor in the refrigeration chamber, determine a target odor level corresponding to the obtained gas concentration according to a pre-set odor level table, determine a target operation intensity of the air purification device according to the volume of the refrigeration chamber and the determined target odor level, and combine a pre-set operation strategy table to control the air purification device to operate at the determined target operation intensity; during the operation of the air purification device, if it is determined that the odor level changes, the air purification device is controlled to operate at an operation intensity corresponding to the changed odor level until there is no odor in the refrigeration chamber; the embodiment of the present application can automatically adjust the operation intensity of the air purification device by using the gas sensor to monitor the gas concentration in the refrigeration chamber in real time, and controlling the air purification device to operate at different operation intensities according to the different volumes of the refrigeration chamber and the different odor levels, which not only achieves the effect of quickly purifying odor, but also reduces the risk of ozone generated by the air purification device, prevents the ozone generated by the air purification device from causing harm to the human body, and thus improves the user experience.

[0116] The above only describes some embodiments of the present application, and it should be noted that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A refrigerator, characterized in that, The refrigerator includes: The refrigeration air duct is connected to the refrigerator compartment of the refrigerator and is used to provide a flow channel for the gas in the refrigerator compartment; A gas sensor is installed in the refrigerator compartment to detect the gas concentration in the refrigerator compartment; An air purification device is installed inside the refrigeration air duct to purify the air inside the refrigeration room; Controller, used for: The gas concentration inside the refrigerator compartment is obtained, and the presence of any odor inside the refrigerator compartment is determined based on the gas concentration. When there is an odor in the refrigerator compartment, the target odor level corresponding to the gas concentration is determined according to a preset odor level table; wherein, the odor level table includes m concentration ranges and their corresponding m odor levels, m≥2; the target odor level refers to the odor level corresponding to the concentration range corresponding to the gas concentration determined from the odor level table. Based on the volume of the refrigerator compartment and the target odor level, and in conjunction with a preset operation strategy table, the target operating intensity of the air purification device is determined; wherein, the operation strategy table includes n volume intervals, m odor levels corresponding to each volume interval, and m operating intensities, where n≥1; the target operating intensity refers to the operating intensity corresponding to the odor level corresponding to the target odor level, which is further determined within the determined volume intervals that correspond to the volume of the refrigerator compartment; The air purification device is controlled to operate at the target operating intensity. If the odor level changes during the operation of the air purification device, the air purification device is controlled to operate at the operating intensity corresponding to the changed odor level until there is no odor in the refrigerator compartment.

2. The refrigerator as described in claim 1, characterized in that, The gas sensor is used to represent changes in gas concentration by changing the output voltage value; therefore, the controller determines whether there is an odor in the refrigerator compartment based on the gas concentration, specifically including: Determine whether the output voltage value of the gas sensor corresponding to the gas concentration is less than a preset first voltage threshold. If so, then it is determined that there is no odor in the refrigerator compartment; If not, then it is determined that there is an odor in the refrigerator compartment.

3. The refrigerator as described in claim 1, characterized in that, The operating intensity of the air purification device is represented by the operating time and the downtime. Different operating intensities correspond to different operating times, and the higher the operating intensity, the longer the corresponding operating time. Different volume ranges and different odor levels correspond to different operating intensities, and the larger the volume range and the higher the odor level, the higher the corresponding operating intensity.

4. The refrigerator as described in claim 3, characterized in that, The controller controls the air purification device to operate according to the target operating intensity, specifically including: The air purification device is controlled to operate cyclically according to the target operating time and target shutdown time in the target operating intensity; wherein, in each cycle, the air purification device is first controlled to run continuously for the target operating time, and then the air purification device is controlled to shut down continuously for the target shutdown time; the target operating time and the target shutdown time refer to the operating time and shutdown time corresponding to the target operating intensity.

5. The refrigerator as described in any one of claims 1 to 4, characterized in that, The i-th volume interval in the operation strategy table is: (i*100-50, i*100+50], and the operation time in the j-th operation intensity corresponding to the j-th odor level of the i-th volume interval is: t. j +(k j *(i-1)*(i-2)+1)*R j ; where t j k represents the base running time corresponding to the j-th running intensity. j R represents the constant coefficient corresponding to the j-th running intensity. j This represents the time increase corresponding to the j-th running intensity. The greater the running intensity, the greater the corresponding base running time, constant coefficient, and time increase. i = 2, 3, ..., n, j = 1, 2, ..., m.

6. A refrigerator control method, characterized in that, Applicable to a refrigerator as described in any one of claims 1 to 5, the method is performed by the controller, the method comprising: The gas concentration inside the refrigerator compartment is obtained, and the presence of any odor inside the refrigerator compartment is determined based on the gas concentration. When there is an odor in the refrigerator compartment, the target odor level corresponding to the gas concentration is determined according to a preset odor level table; wherein, the odor level table includes m concentration ranges and their corresponding m odor levels, m≥2; the target odor level refers to the odor level corresponding to the concentration range corresponding to the gas concentration determined from the odor level table. Based on the volume of the refrigerator compartment and the target odor level, and in conjunction with a preset operation strategy table, the target operating intensity of the air purification device is determined; wherein, the operation strategy table includes n volume intervals, m odor levels corresponding to each volume interval, and m operating intensities, where n≥1; the target operating intensity refers to the operating intensity corresponding to the odor level corresponding to the target odor level, which is further determined within the determined volume intervals that correspond to the volume of the refrigerator compartment; The air purification device is controlled to operate at the target operating intensity. If the odor level changes during the operation of the air purification device, the air purification device is controlled to operate at the operating intensity corresponding to the changed odor level until there is no odor in the refrigerator compartment.

7. The refrigerator control method as described in claim 6, characterized in that, The gas sensor is used to represent changes in gas concentration by changing the output voltage value; therefore, determining whether there is an odor in the refrigerator compartment based on the gas concentration specifically includes: Determine whether the output voltage value of the gas sensor corresponding to the gas concentration is less than a preset first voltage threshold. If so, then it is determined that there is no odor in the refrigerator compartment; If not, then it is determined that there is an odor in the refrigerator compartment.

8. The refrigerator control method as described in claim 6, characterized in that, The operating intensity of the air purification device is represented by the operating time and the downtime. Different operating intensities correspond to different operating times, and the higher the operating intensity, the longer the corresponding operating time. Different volume ranges and different odor levels correspond to different operating intensities, and the larger the volume range and the higher the odor level, the higher the corresponding operating intensity.

9. The refrigerator control method as described in claim 8, characterized in that, The control of the air purification device to operate according to the target operating intensity specifically includes: The air purification device is controlled to operate cyclically according to the target operating time and target shutdown time in the target operating intensity; wherein, in each cycle, the air purification device is first controlled to run continuously for the target operating time, and then the air purification device is controlled to shut down continuously for the target shutdown time; the target operating time and the target shutdown time refer to the operating time and shutdown time corresponding to the target operating intensity.

10. The refrigerator control method according to any one of claims 6 to 9, characterized in that, The i-th volume interval in the operation strategy table is: (i*100-50, i*100+50], and the operation time in the j-th operation intensity corresponding to the j-th odor level of the i-th volume interval is: t. j +(k j *(i-1)*(i-2)+1)*R j ; where t j k represents the base running time corresponding to the j-th running intensity. j R represents the constant coefficient corresponding to the j-th running intensity. j This represents the time increase corresponding to the j-th running intensity. The greater the running intensity, the greater the corresponding base running time, constant coefficient, and time increase. i = 2, 3, ..., n, j = 1, 2, ..., m.

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