Refrigeration appliance and purification method and control system thereof

Abstract

The invention discloses a refrigeration appliance and a purification method and control system thereof. The refrigeration appliance is provided with multiple layers of shelves, each layer of shelf is provided with a corresponding purification device, and the purification method of the refrigeration appliance comprises the steps that the basic purification duration of each shelf is determined based on peculiar smell influence factors of the shelves; the absolute value of the difference value of the basic purification duration of any two adjacent shelves is calculated; according to the absolute value of the difference value, determining the increasing duration of the shelf with the smaller basic purification duration; the sum of the time length to be increased and the basic purification time length is used as the temporary purification time length of the shelf with the small basic purification time length; when the temporary purification duration exists in the shelf, the temporary purification duration serves as the final purification duration, and otherwise, the basic purification duration serves as the final purification duration; and performing purification based on the final purification duration of each shelf. According to the invention, a relatively accurate purification effect can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration appliances, and in particular to a purification method for refrigeration appliances. Background Art

[0002] With the improvement of living standards, people's demand for the preservation of goods has further increased. For example, refrigerators and other refrigeration appliances have become essential household appliances for every family. In addition to preserving refrigerated food, vegetables, meat and eggs, refrigerators can also be used to store skin care products, nutritional supplements, etc., which greatly facilitates people's lives.

[0003] These refrigeration appliances are generally equipped with a refrigerator for safety, and the working temperature of the refrigerator is generally higher than 0 degrees, which creates favorable conditions for the growth of various bacteria, which can easily cause the micro-deterioration of items. Long-term consumption or use will cause certain harm to the human body. At the same time, after long-term use, the refrigerator may produce odors due to the bacteria, microorganisms and the smell of the items themselves. Especially when food is expired and deteriorated, the gas released by the food will affect the quality of other foods. If it is not purified in time, the items in the refrigerator will be contaminated and cannot be eaten or used, resulting in waste.

[0004] The current purification methods are all aimed at purifying a single closed space (such as the entire cold storage room). Taking the purification of the entire cold storage room as an example, the cold storage room usually has multiple layers of shelves, and each layer of shelves stores different items, and the purification time required is also different. At present, only the entire cold storage room is generally purified, which is not accurate enough and may easily lead to insufficient purification of some spaces or excessive purification of some spaces.

[0005] In addition, the existing public technology refrigerators can be purified in the following ways:

[0006] (1) Adding activated carbon: This method has the problem that the purification material is easily saturated.

[0007] (2) Purification by generating ozone. This method is prone to the problem that the ozone concentration is difficult to control. For example, the prior art with publication number CN 117366963 A discloses a refrigerator deodorization system and control method. This prior art purifies by combining an ozone generator with a photocatalyst. This solution has the problem that the ozone concentration is difficult to control and does not take into account actual user usage scenarios, such as when the concentration of odorous gas in the refrigerator is very high or when the door has not been opened for a long time, etc., to automatically sterilize the refrigerator. In addition, the energy consumption of the ozone generator is relatively large.

[0008] Therefore, the existing purification technology has the following problems:

[0009] First, the entire cold storage room was purified as a whole, but some spaces were not purified thoroughly, and some spaces were over-purified.

[0010] Second, the existing purification modules used in refrigerators have low catalytic efficiency and are prone to saturation.

[0011] Third, the existing purification does not take into account the various factors that can cause odor as much as possible.

[0012] Therefore, designing a more accurate purification method for refrigeration appliances is a technical problem to be solved. Summary of the invention

[0013] In order to solve the technical problems of incomplete purification or over-purification in the prior art, the present invention proposes a refrigeration appliance and a purification method and a control system thereof.

[0014] The purification method of the refrigeration appliance of the present invention comprises: the refrigeration appliance has multiple layers of shelves, each layer of shelves has a corresponding purification device, and the purification method comprises:

[0015] Determining a basic purification time for each shelf based on the odor influencing factors of the shelf;

[0016] Calculate the absolute value of the difference between the basic purification time of any two adjacent shelves;

[0017] Determine the additional time of the shelf with a smaller basic purification time according to the absolute value of the difference; and use the sum of the additional time and the basic purification time as the temporary purification time of the shelf with a smaller basic purification time;

[0018] When there is a temporary purification time for the shelf, the temporary purification time is used as the final purification time, otherwise the basic purification time is used as the final purification time;

[0019] Decontaminate based on the final decontamination time for each rack.

[0020] Furthermore, when a rack has two adjacent racks, and both of the racks have a time length that should be increased, the larger time length that should be increased is selected as the time length that should be increased of the rack.

[0021] Furthermore, the odor influencing factors include at least one of the brightness of the shelf, the weight of items stored on the shelf, the storage time of the longest stored item on the shelf, and the interval between the current time and the last time the refrigeration appliance door was opened.

[0022] Further, based on the odor influencing factors of the shelf, determining the basic purification time of each shelf includes:

[0023] Determine the basic value and basic duration of odor influencing factors;

[0024] According to the value of the odor influencing factor detected at the current moment and the multiple relationship with the basic value, the duration corresponding to the odor influencing factor is calculated and corrected;

[0025] When there are multiple factors affecting odor, the durations corresponding to all the factors affecting odor are added together to obtain the basic purification duration of the shelf; otherwise, the durations corresponding to the factors affecting odor are used as the basic purification duration of the shelf.

[0026] Furthermore, the basic cleaning time of the shelf is calculated using the formula t1′=t x1 +…+t xn , t xi = basic duration * value of the odor influencing factor detected at the current moment / basic value of the corresponding odor influencing factor * correction coefficient, i = (1,…,n).

[0027] Furthermore, before purification, the method also includes a step of correcting the final purification time according to the concentration of odorous gases on the shelf.

[0028] Furthermore, the final purification time is corrected according to the odor gas concentration of the shelf, including:

[0029] Divide the odor concentration range of the partition into multiple intervals, each interval corresponds to a correction coefficient;

[0030] Determine the interval into which the odor gas concentration of the shelf falls;

[0031] Count the number of odorous gas types falling into the maximum interval of the interval;

[0032] The final purification time is corrected according to the correction coefficient corresponding to the maximum interval in the interval and the number of odorous gas types.

[0033] Further, using formula a j *Final purification time before correction*The number of odorous gas types is used to correct the final purification time, j=(1,…,the number of divided intervals).

[0034] Furthermore, the types of odorous gases include at least one of ammonia, hydrogen sulfide, and ethanol.

[0035] Furthermore, the purification device includes multiple purification components and fan components. After the final purification time is corrected according to the odor gas concentration of the shelf, each purification component is adjusted according to the final purification time and its corresponding adjustment coefficient to obtain the final purification time of each purification component. Each purification component purifies with its corresponding final purification time, and the fan component uses the longest final purification time of all purification components on the corresponding shelf as the opening time.

[0036] Furthermore, the purification component includes a photocatalyst purification component and an ion generator component.

[0037] Furthermore, the purification device also includes a housing for accommodating the purification component and the fan component, and an air inlet and an air outlet arranged on the housing;

[0038] The air outlet is provided with a baffle controlled by a motor, and the motor and the baffle are controlled according to the maximum interval of the interval into which the concentration of the odorous gas on the shelf falls, so as to open the corresponding opening.

[0039] Furthermore, the time length to be increased is half of the absolute value of the difference.

[0040] The control system of the refrigeration appliance of the present invention adopts the purification method of the refrigeration appliance of the above technical solution to control the purification of the refrigeration appliance;

[0041] The control system of the refrigeration appliance comprises:

[0042] A detection unit, for determining information on factors affecting odor of each of the shelves;

[0043] A calculation unit, based on the information of the odor influencing factors, determines the basic purification time of each shelf; calculates the absolute value of the difference between the basic purification time of any two adjacent shelves, and the additional time and temporary purification time of the corresponding shelf;

[0044] The purification unit calculates the final purification time of each purification device according to the basic purification time and the temporary purification time calculated by the calculation unit, and controls each purification device to perform purification according to each final purification time.

[0045] Furthermore, the detection unit includes at least one of a weight detection unit, an odor detection unit, a brightness recognition unit, an image recognition unit, a door opening and closing recognition unit, and a timing unit.

[0046] The refrigeration appliance of the present invention comprises the control system of the refrigeration appliance of the above technical solution.

[0047] The purification method proposed in the present invention purifies each shelf layer separately, and in addition to considering the actual situation of each shelf layer, also considers the influence of adjacent shelves on the shelves, so that the purification of the shelves is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention is described in detail below with reference to the embodiments and accompanying drawings, wherein:

[0049] Figure 1 It is a main flow chart of an embodiment of the present invention.

[0050] Figure 2It is a structural block diagram of a control system according to an embodiment of the present invention.

[0051] Figure 3 It is a simplified schematic diagram of the structure of a refrigeration appliance according to an embodiment of the present invention.

[0052] Figure 4 It is a schematic structural diagram of a purification device according to an embodiment of the present invention.

[0053] Description of reference numerals:

[0054] 1. Refrigerator; 2. Freezer, 3. First shelf purification device; 4. First shelf purification device; 5. Third shelf purification device 5, 6. First shelf weight sensor; 7. Second shelf weight sensor; 8. Third shelf weight sensor; 9. First shelf brightness recognition device; 10. Second shelf brightness recognition device; 11. Third shelf brightness recognition device; 12. Odor detection device; 13. Image recognition device, 14. Position sensing device.

[0055] 100. Shell; 101. Ion generator assembly; 102. Air outlet; 103. Photocatalyst layer; 104. Ultraviolet lamp; 105. Baffle; 106. Fan assembly; 107. Air inlet. DETAILED DESCRIPTION

[0056] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0057] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0058] Since most existing refrigeration appliances have movable shelves in the refrigerator compartment for reasonable space division, and the space of each shelf is a semi-open space, if the purification process is controlled with the entire refrigerator compartment as the object, the items on each shelf are of different density and types, which will lead to incomplete purification or over-purification. The present invention takes this situation into consideration, and at the same time, the present invention also considers that if the purification is carried out on a shelf basis, but the shelf is a semi-open space, the bacteria, odors, etc. between them will still be transmitted between the shelves, so the purification method of the refrigeration appliance proposed in the present invention is intended to solve these problems.

[0059] The purification method of the refrigeration appliance of the present invention is characterized in that the purification appliance has multiple layers of shelves, and each layer of shelves has a corresponding purification device.

[0060] like Figure 1 As shown, in one embodiment, the purification method of a refrigeration appliance includes the following basic steps.

[0061] Based on the odor influencing factors of the shelves, the basic purification time of each shelf is determined; regarding the odor influencing factors, there are many ready-made definitions in the prior art, such as the storage time of items, etc.

[0062] Calculate the absolute value of the difference between the basic purification time of any two adjacent shelves; for example, if the basic purification time of the first shelf is 5 minutes and the basic purification time of the second shelf is 10 minutes, then the absolute value of the difference between the two adjacent shelves is 5 minutes.

[0063] The additional time for the shelf with a smaller basic purification time is determined according to the absolute value of the difference; the specific value of the additional time can be adjusted by technicians in this field as needed, for example, the additional time can be half of the absolute value of the difference, etc., or other calculation methods can be used.

[0064] The sum of the increased time and the basic purification time will be used as the temporary purification time of the shelf with the smaller basic purification time.

[0065] When a shelf has a temporary purification time, the temporary purification time is used as the final purification time; otherwise, the basic purification time is used as the final purification time.

[0066] Finally, the cleaning is performed based on the final cleaning time of each rack.

[0067] The above technical solution of the present invention performs purification according to the actual situation of each shelf, and will not cause the situation that some shelves are not completely purified and some shelves are over-purified as in the prior art. At the same time, the present invention also takes into account the influence between two adjacent shelves. Taking the above-mentioned first shelf and the second shelf as an example, for the second shelf, its situation is relatively serious and the longer purification time required is longer, so it is bound to easily affect the first shelf with a shorter purification time. In order to alleviate this influence, the present invention appropriately extends the purification time of the first shelf and reduces the influence of the second shelf on the first shelf, which not only avoids the over-purification of the first shelf, but also takes into account the influence of adjacent shelves other than the conventional odor influencing factors.

[0068] In a further embodiment, the number of shelves may be more than two layers, for example, when there are three layers or more, there will be a shelf with two adjacent shelves. When a shelf has two adjacent shelves, and both shelves have a time length that should be increased, the larger time length that should be increased is selected as the time length that should be increased for the shelf. For example, the first shelf is adjacent to the second shelf and the third shelf, and the purification time length of the first shelf is 5 minutes, the purification time length of the second shelf is 10 minutes, and the purification time length of the third shelf is 12 minutes. Then the absolute value of the difference in purification time length between the first shelf and the second shelf is 5 minutes, and the absolute value of the difference in purification time length between the second shelf and the third shelf is 7 minutes, so the first shelf has two time lengths that should be increased, which are 5 minutes and 7 minutes respectively. At this time, 7 minutes should be selected as the time length that should be increased for the first shelf.

[0069] By considering the impact of multiple adjacent rack situations, the longer the time to increase is, the greater the impact on the rack. In order to mitigate this impact, the largest time to increase should be selected as the time to increase for the rack.

[0070] In one embodiment, the odor influencing factors include at least one of the brightness of the shelf, the weight of items stored on the shelf, the storage time of the longest stored item on the shelf, and the interval between the current time and the last time the refrigeration appliance door was opened.

[0071] The brightness of a shelf describes the area or volume occupied by the items on the shelf. The larger the area or volume, the greater the impact on the shelf.

[0072] The weight of items stored on the shelf can be a factor in odor.

[0073] The items that have been stored on the shelf the longest are the items that are most likely to affect the shelf, so the storage time of the items can also be a factor affecting odor.

[0074] Each time the door is opened, the temperature inside the shelf fluctuates, so the time interval between the current moment and the last time the refrigeration appliance door was opened can also be used as a factor affecting odor.

[0075] The present invention does not limit the combination of the above-mentioned odor influencing factors. Those skilled in the art can select one or more of the above-mentioned odor influencing factors according to the needs of the application scenario, and can also consider other odor influencing factors in the prior art together to make the basic purification time of the shelf more appropriate.

[0076] In one embodiment, based on the odor influencing factors of the shelf, the basic purification time of each shelf can be determined by accumulating the number of odor influencing factors. For example, if the brightness is less than a certain brightness value, 5 minutes are added to the basic purification time.

[0077] In another embodiment, based on the odor influencing factors of the shelf, determining the basic purification time of each shelf may also include the following steps.

[0078] Determine the basic value and basic duration of odor influencing factors;

[0079] According to the value of the odor influencing factor detected at the current moment and the multiple relationship with the basic value, the duration corresponding to the odor influencing factor is calculated and corrected;

[0080] When there are multiple factors affecting odor, the durations corresponding to all the factors affecting odor are added together to obtain the basic purification duration of the shelf; otherwise, the durations corresponding to the factors affecting odor are used as the basic purification duration of the shelf.

[0081] Taking the shelf brightness as an example, assuming that the basic value of the shelf brightness is L1, and the basic duration is 3 minutes. Then when the current shelf brightness is L, the duration corresponding to the brightness can be L / L1 + brightness duration correction value. It should be noted that the shelf brightness referred to in the present invention is the brightness inside the refrigeration appliance detected when the door is opened, and the corresponding brightness detection sensor is preferably located in the middle of the shelf, or other means that can reduce the impact of the light inside the refrigeration appliance and / or external light, so as to truthfully feedback the situation of the shelf space being occupied.

[0082] In a specific embodiment, the basic cleaning time of the shelf is calculated using the formula t1′=t x1 +…+t xn , t xi = basic duration * value of the odor influencing factor detected at the current moment / basic value of the corresponding odor influencing factor * correction coefficient, i = (1,…,n).

[0083] In this embodiment, the correction coefficient is directly multiplied by the value of the odor influencing factor detected at the current moment and the multiple of the basic value, which is also a method for calculating the purification time.

[0084] In a preferred embodiment, before purification, the step of correcting the final purification time according to the odor gas concentration of the shelf is also included.

[0085] The concentration of odorous gases is also an important factor affecting the user experience, and is also an important indicator for feedback of the degree of purification required in refrigeration appliances. The present invention takes the concentration of odorous gases into consideration to correct the final purification time of the shelf, which can make the final purification time of the shelf more accurate.

[0086] In one embodiment, a corresponding correction coefficient may be selected for correction according to the value of the odor gas concentration.

[0087] In a preferred embodiment, the correction of the final purification time according to the odor gas concentration of the shelf may also include the following steps.

[0088] Divide the odor concentration range of the partition into multiple intervals, each interval corresponds to a correction coefficient;

[0089] Determine the interval into which the odor gas concentration of the shelf falls;

[0090] Count the number of odorous gas types falling into the maximum interval of the interval;

[0091] The final purification time is corrected according to the correction coefficient corresponding to the maximum interval in the interval and the number of odorous gas types.

[0092] This embodiment divides the odor gas concentration range into multiple intervals, which avoids the operational complexity of corresponding correction values ​​to a single odor gas concentration value and simplifies the correction process. At the same time, this embodiment also takes into account the number of odor gas types. Whether it is one odor gas or multiple odor gases, the required purification time is also different. The present invention performs correction based on the correction coefficient of the maximum interval and the number of odor gas types. Relatively speaking, it will make the final purification time more accurate.

[0093] In a specific embodiment, the present invention adopts formula a j * Final purification time before correction * The number of odorous gas types corrects the final purification time, a j is the correction coefficient corresponding to the jth interval, j = (1,…, the number of divided intervals), a j > 0. This embodiment provides a specific correction method, but the present invention is not limited to this correction method, and correction can also be performed by selecting the correction values ​​corresponding to the interval and the number of odorous gas types.

[0094] In one embodiment, the odorous gas type includes at least one of ammonia, hydrogen sulfide, and ethanol. These are common odorous gas types in refrigerators. The refrigeration appliance of the present invention is not limited to refrigerators. Therefore, for the odorous gas type, those skilled in the art can also select according to the specific application of the refrigeration appliance.

[0095] In one embodiment, the purification device includes multiple purification components and fan components. After the final purification time is corrected according to the odor gas concentration of the shelf, each purification component is adjusted according to the final purification time and its corresponding adjustment coefficient to obtain the final purification time of each purification component. Each purification component purifies with its corresponding final purification time, and the fan component uses the longest final purification time of all purification components on the corresponding shelf as the opening time.

[0096] This embodiment takes into account the complexity of the items stored in the refrigeration appliance. In order to cope with various situations that require purification, multiple purification components can be configured. Different purification components must have different functions and the required purification time may also be different. Therefore, an adjustment coefficient is set for each purification component for adjustment, so that different purification situations can be purified more accurately, avoiding excessive purification or incomplete purification. As the fan component is an air circulation component, as long as the purification component is working, the fan component also needs to work in coordination to purify the air in the shelf in a timely manner.

[0097] In one embodiment, the purification component includes a photocatalyst purification component and an ion generator component. These two purification components avoid the problems of conventional purification products in the prior art being easily saturated or causing environmental pollution, and are relatively green purification components.

[0098] In one embodiment, the purification device also includes a shell for accommodating the purification component and the fan component, and an air inlet and an air outlet are arranged on the shell; a baffle controlled by a motor is provided at the air outlet, and the motor and the baffle are controlled according to the maximum interval of the interval into which the concentration of the odorous gas on the shelf falls, so as to open the corresponding opening.

[0099] This embodiment is also a means of accurately adjusting the degree of purification, by controlling the motor and the baffle to control the air volume, thereby controlling the purification speed or the degree of purification.

[0100] It should be noted that the above-mentioned embodiments of the present invention may also be combined into different embodiments. The present invention will not elaborate on the combinations of the above-mentioned embodiments one by one, and all of them belong to the protection scope of the present invention.

[0101] The present invention also protects a control system of a refrigeration appliance, which controls the purification of the refrigeration appliance by using a purification method of a refrigeration appliance of any one of the above technical solutions or a combination thereof.

[0102] like Figure 2 As shown, the control system of the refrigeration appliance of the present invention includes the following units.

[0103] A detection unit, for determining information on factors affecting odor of each of the shelves;

[0104] A calculation unit, based on the information of the odor influencing factors, determines the basic purification time of each shelf; calculates the absolute value of the difference between the basic purification time of any two adjacent shelves, and the additional time and temporary purification time of the corresponding shelf;

[0105] The purification unit calculates the final purification time of each purification device according to the basic purification time and the temporary purification time calculated by the calculation unit, and controls each purification device to perform purification according to each final purification time.

[0106] In addition to the above-mentioned units, a timing unit may be further included. Of course, the timing unit may not be additionally provided, and a timer may be provided in the unit that needs timing. The present invention can realize accurate purification of the shelf through the above-mentioned units.

[0107] The detection unit of the present invention includes but is not limited to: at least one of a weight detection unit, an odor detection unit, a brightness recognition unit, an image recognition unit, a door opening and closing recognition unit, and a timing unit.

[0108] Through these detection units, a better data basis is provided for the purification method to achieve accurate purification.

[0109] The present invention also protects a refrigeration appliance, which includes the above-mentioned control system, and also includes the multi-layer shelves mentioned in the above-mentioned technical scheme, and a purification device located on each shelf. The control system purifies the corresponding shelf according to the purification method of the refrigeration appliance described in any one of the above-mentioned technical schemes.

[0110] The concept of the present invention is described below with a detailed embodiment.

[0111] like Figure 3 As shown, this detailed embodiment is described by taking a refrigerator as a specific refrigeration appliance, and the refrigerator includes a refrigerating chamber 1 and a freezing chamber 2.

[0112] The refrigerating chamber 1 has three shelves, and each shelf has a corresponding purification device, including a first shelf purification device 3, a second shelf purification device 4, and a third shelf purification device 5.

[0113] In order to make the refrigerator more intelligent, the refrigerator is also equipped with many sensors, including but not limited to the first shelf weight sensor 6, the second shelf weight sensor 7, the third shelf weight sensor 8, the first shelf brightness recognition device 9, the second shelf brightness recognition device 10, the third shelf brightness recognition device 11, the odor detection device 12, the image recognition device 13, and the position sensor 14.

[0114] A brightness recognition unit is set on the top of each shelf of the refrigerator. The brightness recognition device is used to identify the type of item and then feed back to the timing unit to count the storage time of the item.

[0115] Figure 4 The specific structural schematic diagram of the purification device is given. The purification device comprises a housing 100, an air inlet 107 and an air outlet 102 are arranged on the housing 100, a baffle 105 is arranged at the air outlet, and a purification component and a fan component 106 are arranged in the housing 100.

[0116] The purification component includes an ion generator component 101 and a photocatalyst purification component. The photocatalyst purification component includes an air duct connected to the fan outlet of the fan component, a photocatalyst layer 103 arranged at the outlet end of the air duct, and an ultraviolet lamp 104 arranged in the air duct, which can be a 222nm ultraviolet lamp.

[0117] Determine which intervals the concentrations of various odors collected by each shelf in the refrigerator belong to, and the number of odor gas types in the maximum interval in which the odor gas concentration of the shelf falls, to calculate the duration of the photocatalyst purification component and the ion generator component being turned on. As the odor concentration gradually increases, the turn-on time of the photocatalyst purification component and the turn-on time of the ion generator component will also be adjusted. At the same time, the fan component can also be controlled according to the specific interval to adjust the purification efficiency. When considering the duration of the photocatalyst purification component and the ion generator component being turned on, the influence of the adjacent shelf on the shelf on this layer is also considered.

[0118] Meat in the refrigerator mainly produces ammonia or amines, and corruption of fruits and vegetables mainly produces hydrogen sulfide and alcohols. The odor detection device used in this embodiment is a semiconductor odor sensor, which can monitor the gas concentration range of ammonia (1-10ppm), hydrogen sulfide (0.1-5ppm), and ethanol (1-10ppm). It can effectively monitor the odor gas in the refrigerator, that is, the characteristic corruption gas component.

[0119] Assuming that the basic value of the shelf brightness is L1, the basic duration is t3′. At this time, assuming that the recognized shelf brightness is L, L<L1, the duration corresponding to the brightness is t16=t3′*(L / L1)*b1, where b1 is the correction coefficient.

[0120] Assume that the basic value of the weight of the items stored on the shelf is m', and the basic duration is t4'. At this time, assume that the weight of the items stored on the current shelf is m, and the duration corresponding to the weight is t 17 =t4′*(m / m′)*b2, where b2 is the correction coefficient.

[0121] Assume that the base value of the storage time of the longest-stored item on the shelf is T1, the base time is t5′, and assume that the storage time of the longest-stored item on the current shelf is T, t 18 =t5′*(T / T1)*b3, where b3 is the correction coefficient.

[0122] The basic value of the interval between the current time and the last time the refrigeration appliance was opened is N1, and the basic duration is t6′. When the current interval is N, t 19 =t6′*(N / N1)*b4, where b4 is the correction coefficient.

[0123] Then in this embodiment, the basic cleaning time of the shelf t1′=t16 +t 17 +t 18 +t 19 .

[0124] Assume that the basic purification time of the first rack is t2', and the basic purification time of the second rack adjacent to the first rack is t2'. And t2'>t1'. For example, if the time to be increased is half of the absolute value of the difference, then the time to be increased for the first rack △t = (t2'-t1') / 2, and the final purification time of the first rack becomes t1'+△t.

[0125] Next, the final purification time is corrected according to the odor gas concentration on the shelf.

[0126] The present invention divides the concentration range of odorous gas into 6 intervals, namely (0, maximum concentration range / 6], (maximum concentration range / 6, maximum concentration range*2 / 6], (maximum concentration range*2 / 6, maximum concentration range*3 / 6], (maximum concentration range*3 / 6, maximum concentration range*4 / 6], (maximum concentration range*4 / 6, maximum concentration range*5 / 6], (maximum concentration range*5 / 6, maximum concentration range]. The maximum concentration range referred to in the present invention is the maximum range of the odor detection device. The correction coefficient a of each interval is j They are a1, a2, a3, a4, a5, and a6 respectively.

[0127] When the odor gas concentration falls into the interval (0, maximum concentration range / 6], and there are two odor gases falling into this interval, then the final purification time of the first shelf after optimization is a1*final purification time before correction*2.

[0128] Next, according to the working time of the photocatalyst purification component and the ion generator component, c1*a1*final purification time before correction*2 and c2*a1*final purification time before correction*2 are respectively calculated. Among them, c1 is the adjustment coefficient of the photocatalyst purification component, and c2 is the adjustment coefficient of the ion generator component.

[0129] When the maximum interval in the interval that the odor gas concentration falls into is (maximum concentration range / 6, maximum concentration range*2 / 6], and there is one odor gas falling into this interval, then the final purification time of the first shelf after optimization is a2*final purification time before correction*1.

[0130] Next, the working hours of the photocatalyst purification component and the ion generator component are c1*a2*final purification time before correction*1 and c2*a2*final purification time before correction*1, respectively. Where c1 is the adjustment coefficient of the photocatalyst purification component, and c2 is the adjustment coefficient of the ion generator component.

[0131] When the maximum interval in the interval that the odor gas concentration falls into is (maximum concentration range*2 / 6, maximum concentration range*3 / 6], and there are two types of odor gases falling into this interval, then the final purification time of the first shelf after optimization is a3*final purification time before correction*2.

[0132] Next, according to the working time of the photocatalyst purification component and the ion generator component, they are c1*a3*final purification time before correction*2 and c2*a3*final purification time before correction*2, where c1 is the adjustment coefficient of the photocatalyst purification component and c2 is the adjustment coefficient of the ion generator component.

[0133] When the maximum interval in the interval that the odor gas concentration falls into is (maximum concentration range*3 / 6, maximum concentration range*4 / 6], and there are two types of odor gases falling into this interval, then the final purification time of the first shelf after optimization is a4*final purification time before correction*2.

[0134] Next, according to the working time of the photocatalyst purification component and the ion generator component, c1*a4*final purification time before correction*2 and c2*a4*final purification time before correction*2 are used respectively. Among them, c1 is the adjustment coefficient of the photocatalyst purification component, and c2 is the adjustment coefficient of the ion generator component.

[0135] When the maximum interval in the interval that the odor gas concentration falls into is (maximum concentration range*4 / 6, maximum concentration range*5 / 6], and there are 3 types of odor gases falling into this interval, then the final purification time of the first shelf after optimization is a5*final purification time before correction*3.

[0136] Next, the working hours of the photocatalyst purification component and the ion generator component are c1*a5*final purification time before correction*3 and c2*a5*final purification time before correction*3, respectively. Among them, c1 is the adjustment coefficient of the photocatalyst purification component, and c2 is the adjustment coefficient of the ion generator component.

[0137] When the maximum interval in the interval that the odor gas concentration falls into is (maximum concentration range*5 / 6, maximum concentration range], and there are 3 types of odor gases falling into this interval, then the final purification time of the first shelf after optimization is a6*final purification time before correction*3.

[0138] Next, the working hours of the photocatalyst purification component and the ion generator component are c1*a6*final purification time before correction*3 and c2*a6*final purification time before correction*3, respectively. Where c1 is the adjustment coefficient of the photocatalyst purification component, and c2 is the adjustment coefficient of the ion generator component.

[0139] The selection of the maximum interval in the interval within which the above-mentioned odor gas concentration falls can be illustrated by giving an example. For example, the concentration of ammonia on the first shelf falls into the interval of (0, maximum value of the concentration range / 6], the concentration of hydrogen sulfide falls into the interval of (maximum value of the concentration range / 6, maximum value of the concentration range*2 / 6], and the concentration of ethanol falls into the interval of (maximum value of the concentration range*2 / 6, maximum value of the concentration range*3 / 6]. Then the maximum interval in the interval within which the shelf falls is (maximum value of the concentration range*2 / 6, maximum value of the concentration range*3 / 6], the correction coefficient is a3, and the number of odor gas types is 1.

[0140] It can be seen from the above embodiments that the present invention can process each shelf and the influence of adjacent shelves on each shelf, so as to make purification as accurate as possible and avoid over-purification and incomplete purification.

[0141] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A purification method for a refrigeration appliance, wherein the refrigeration appliance has multiple layers of shelves, each layer of shelves has a corresponding purification device, characterized in that: The purification method comprises: determining a basic purification time of each shelf based on the odor influencing factors of the shelf; Calculate the absolute value of the difference between the basic purification time of any two adjacent shelves; Determine the additional time of the shelf with a smaller basic purification time according to the absolute value of the difference; and use the sum of the additional time and the basic purification time as the temporary purification time of the shelf with a smaller basic purification time; When there is a temporary purification time for the shelf, the temporary purification time is used as the final purification time, otherwise the basic purification time is used as the final purification time; Decontaminate based on the final decontamination time for each rack.

2. The method for purifying a refrigeration appliance according to claim 1, characterized in that: When a rack has two adjacent racks, and both racks have a time length that should be increased, the larger one is selected as the time length that should be increased of the rack.

3. The method for purifying a refrigeration appliance according to claim 1, characterized in that: The odor influencing factors include at least one of the brightness of the shelf, the weight of items stored on the shelf, the storage time of the longest stored item on the shelf, and the interval between the current time and the last time the refrigeration appliance door was opened.

4. The method for purifying a refrigeration appliance according to claim 1, characterized in that: Based on the odor influencing factors of the shelves, determining the basic purification time of each shelf includes: determining a basic value and a basic time of the odor influencing factors; According to the value of the odor influencing factor detected at the current moment and the multiple relationship with the basic value, the duration corresponding to the odor influencing factor is calculated and corrected; When there are multiple factors affecting odor, the durations corresponding to all the factors affecting odor are added together to obtain the basic purification duration of the shelf; otherwise, the durations corresponding to the factors affecting odor are used as the basic purification duration of the shelf.

5. The method for purifying a refrigeration appliance according to claim 4, characterized in that: The basic cleaning time of the rack is calculated using the formula t1' = t x1 +…+t xn , t xi = basic duration * value of the odor influencing factor detected at the current moment / basic value of the corresponding odor influencing factor * correction coefficient, i = (1,…,n).

6. The method for purifying a refrigeration appliance according to claim 1, characterized in that: Before the purification is performed, a step of correcting the final purification time according to the odor gas concentration of the shelf is also included.

7. The method for purifying a refrigeration appliance according to claim 6, characterized in that: Corrections to the final purge time based on rack odor concentration include: Divide the odor concentration range of the partition into multiple intervals, each interval corresponds to a correction coefficient; Determine the interval into which the odor gas concentration of the shelf falls; Count the number of odorous gas types falling into the maximum interval of the interval; The final purification time is corrected according to the correction coefficient corresponding to the maximum interval in the interval and the number of odorous gas types.

8. The method for purifying a refrigeration appliance according to claim 7, characterized in that: Using formula a j *Final purification time before correction*The number of odorous gas types is used to correct the final purification time, j=(1,…,the number of divided intervals).

9. The method for purifying a refrigeration appliance according to claim 7, characterized in that: The type of odorous gas includes at least one of ammonia, hydrogen sulfide and ethanol.

10. The method for purifying a refrigeration appliance according to claim 6, characterized in that: The purification device includes multiple purification components and fan components. After the final purification time is corrected according to the odor gas concentration of the shelf, each purification component is adjusted according to the final purification time and its corresponding adjustment coefficient to obtain the final purification time of each purification component. Each purification component purifies with its corresponding final purification time, and the fan component uses the longest final purification time of all purification components on the corresponding shelf as the start time.

11. The method for purifying a refrigeration appliance according to claim 10, characterized in that: The purification component comprises a photocatalyst purification component and an ion generator component.

12. The method for purifying a refrigeration appliance according to claim 10, characterized in that: The purification device also includes a housing for accommodating the purification component and the fan component, and an air inlet and an air outlet arranged on the housing; The air outlet is provided with a baffle controlled by a motor, and the motor and the baffle are controlled according to the maximum interval of the interval into which the concentration of the odorous gas on the shelf falls, so as to open the corresponding opening.

13. The method for purifying a refrigeration appliance according to any one of claims 1 to 12, characterized in that: The time length to be increased is half of the absolute value of the difference.

14. A control system for a refrigeration appliance, characterized in that: The control system uses the purification method for a refrigeration appliance as claimed in any one of claims 1 to 13 to control the purification of the refrigeration appliance; The control system of the refrigeration appliance comprises: A detection unit, for determining information on factors affecting odor of each of the shelves; A calculation unit, based on the information of the odor influencing factors, determines the basic purification time of each shelf; calculates the absolute value of the difference between the basic purification time of any two adjacent shelves, and the additional time and temporary purification time of the corresponding shelf; The purification unit calculates the final purification time of each purification device according to the basic purification time and the temporary purification time calculated by the calculation unit, and controls each purification device to perform purification according to each final purification time.

15. The control system for a refrigeration appliance according to claim 14, characterized in that: The detection unit includes at least one of a weight detection unit, an odor detection unit, a brightness recognition unit, an image recognition unit, a door opening and closing recognition unit, and a timing unit.

16. A refrigeration appliance, characterized in that: A control system comprising a refrigeration appliance as claimed in any one of claims 14 or 15.

Images