A sterilization system, a control method and a refrigerator

Abstract

The present invention discloses a sterilization system, a control method and a refrigerator, which relate to the field of refrigerators, and solve the problem in the prior art that the working duration of the refrigerator sterilization device is fixed and does not consider the change in the volume of the items stored by the user and the requirement for the working state of the sterilization device. The sterilization system of the present invention includes a sterilization module, a detection module, a calculation module and a control module. Among them, the sterilization module is used to perform sterilization treatment on the space to be sterilized; the detection module is used to detect the parameters of the items placed in the space to be sterilized; the detection module is connected to the calculation module, and the calculation module calculates the volume of the items placed in the space to be sterilized based on the parameters detected by the detection module; the control module is connected to the sterilization module and the calculation module, and the control module controls the working duration of the sterilization module based on the volume of the items placed in the space to be sterilized. The sterilization system of the present invention can not only meet the sterilization requirements, but also has the advantages of low energy consumption and precise control.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and particularly to a sterilization system, a control method, and a refrigerator. Background Art

[0002] According to investigations, the refrigerator is the second most polluted place in the ranking of household hygiene. The bacteria in the refrigerators of 46% of households exceed the standard, including Escherichia coli, Salmonella, Listeria, etc. Research has found that the average number of bacteria in household refrigerators is 11.4 million per cm 3 . In the refrigerator, bacteria are everywhere. They can be found at the air ducts of the refrigerator and the places where the air flow passes through, in the fruit and vegetable boxes, egg trays, partitions, and the stored food. At the same time, refrigerator accessories such as fruit and vegetable boxes, egg trays, and partitions will be contaminated with some food leaves, residues, and oil stains during the food storage process. These are the delicious substances in the eyes of microorganisms, providing them with growth and reproduction conditions to expand their teams. Through surface sampling and detection of the refrigerating chamber, the detected range of the total number of bacteria is 25 - 1.25×10 8 cfu / 100cm 2 , posing a potential health risk to users.

[0003] Currently, the main sterilization methods for refrigerators are as follows: photocatalyst or cold catalyst antibacterial and deodorizing methods, the method of adding antibacterial agents to the refrigerator inner liner material, plasma or positive and negative ion sterilization methods, etc. However, the photocatalyst or cold catalyst antibacterial and deodorizing method is a contact sterilization method, which can only kill the bacteria on the surface of the photocatalyst or cold catalyst substrate and cannot kill the bacteria in the compartment space. The method of adding antibacterial agents to the refrigerator inner liner material is also a contact sterilization method and cannot kill the bacteria in the compartment space. Moreover, in addition to the limited sterilization effect of the above sterilization methods, they cannot adaptively adjust the sterilization plan according to the actual use requirements of the refrigerator.

[0004] In the prior art, the start of the sterilization program or device is mostly achieved by detecting the temperature or humidity change in the refrigerator. This control method is greatly affected by the items placed in the refrigerator and may have certain deviations. For example, when the stored food is fruits and vegetables, the respiration of the fruits and vegetables themselves may affect the temperature and humidity changes in the corresponding compartment or storage space, resulting in inaccurate detection results. At the same time, during the use of the refrigerator by users, the utilization degree of the refrigerator space varies greatly. It is more reasonable that the volume of the items in the refrigerator accounts for about 75%. Storing too many items will block the air circulation in the refrigerator, which is not conducive to food preservation. On the other hand, the working time of the existing refrigerator sterilization device is fixed and does not consider the demand of the working state of the sterilization device for the change in the volume of the items stored by the user, which may lead to too short working time of the sterilization device, resulting in poor sterilization effect; or the sterilization device works at high power for a long time, resulting in high energy consumption and other problems.

[0005] The prior art discloses a refrigerator control system and method for a movable thermopile sensor, providing a non-contact thermopile infrared sensor combined with a transmission guide rail to jointly detect the temperature of food placed on the refrigerator shelf, so as to achieve the purpose of real-time monitoring of temperature changes and facilitate accurate temperature control of the refrigerator. However, the moving range of the infrared sensor in this method is limited, and it is impossible to comprehensively detect the temperature of the items in the refrigerator. Another prior art discloses a method for detecting the use volume of a refrigerator and a refrigerator, which mainly uses a detection component composed of an infrared light source and a visible light source to detect the use volume of the storage compartment. This detection method may cause a large error in calculating the refrigerator volume due to the placement position of the detection component.

[0006] Therefore, in order to more reasonably control the operation of the sterilization device and achieve the effect of efficient energy-saving sterilization, it is urgent to improve the sterilization device and control method of the existing refrigerator. Summary of the Invention

[0007] One of the purposes of the present invention is to propose a sterilization system, which solves the technical problem that the working duration of the refrigerator sterilization device in the prior art is fixed and does not consider the change in the volume of the items stored by the user and the demand for the working state of the sterilization device. The many technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The sterilization system of the present invention includes a sterilization module, a detection module, a calculation module, and a control module. Among them, the sterilization module is used for sterilizing the space to be sterilized; the detection module is used for detecting the parameters of the items placed in the space to be sterilized; the detection module is connected to the calculation module, and the calculation module calculates the volume of the items placed in the space to be sterilized based on the parameters detected by the detection module; the control module is connected to the sterilization module and the calculation module, and the control module controls the working duration of the sterilization module based on the volume of the items placed in the space to be sterilized.

[0010] According to a preferred embodiment, the calculation module is further used for calculating the ratio of the volume of the items placed in the space to be sterilized to the volume of the space to be sterilized, and the control module controls the working duration of the sterilization module based on the ratio of the volume of the items placed in the space to be sterilized to the volume of the space to be sterilized.

[0011] According to a preferred embodiment, the sterilization system further includes a door opening detection module, which is arranged at the door body of the space to be sterilized, and the door opening detection module is used for detecting the opening and closing state of the door body of the space to be sterilized; and the door opening detection module is also connected to the control module, and the control module also controls the working duration of the sterilization module based on the opening and closing state of the door body of the space to be sterilized.

[0012] According to a preferred embodiment, when the door of the space to be sterilized is opened at least once within a preset time period and the door of the space to be sterilized is in a closed state, the control module controls the working duration of the sterilization module in the following manner: when 0 < V / V0 ≤ 0.25, the control module controls the working duration of the sterilization module to be a first duration; when 0.25 < V / V0 ≤ 0.50, the control module controls the working duration of the sterilization module to be a second duration; when 0.50 < V / V0 ≤ 0.75, the control module controls the working duration of the sterilization module to be a third duration; when 0.75 < V / V0 < 1, the control module controls the working duration of the sterilization module to be a fourth duration; when the door of the space to be sterilized is not opened within a preset time period, the control module controls the working duration of the sterilization module in the following manner: the control module controls the working duration of the sterilization module to be a fifth duration; where V is the volume of the items placed in the space to be sterilized, and V0 is the volume of the space to be sterilized.

[0013] According to a preferred embodiment, the detection module includes an infrared measurement light curtain, an infrared distance sensor, and a guide rail. Among them, the guide rail is installed on opposite sides of the space to be sterilized, and the infrared measurement light curtain and the infrared distance sensor are slidably installed on the guide rail, and the infrared distance sensor is disposed above or below the infrared measurement light curtain.

[0014] According to a preferred embodiment, the infrared measurement light curtain includes an infrared light curtain transmitting end, an infrared light curtain receiving end, and a detection channel. Among them, the detection channels are arranged at intervals along the height direction of the guide rail and the width direction of the space to be sterilized. The infrared light curtain transmitting end and the infrared light curtain receiving end are arranged along the width direction of the space to be sterilized, and the infrared light curtain transmitting end and the infrared light curtain receiving end are respectively slidably disposed on the guide rails located on opposite sides of the space to be sterilized. The infrared light curtain transmitting end is used to emit infrared light, and the infrared light curtain receiving end is used to receive infrared light.

[0015] According to a preferred embodiment, the calculation module calculates the volume of the items placed in the space to be sterilized according to the following formula: V = L×W×H, L = L0 - L1 - L2, H = v×t, where L, W, and H are the length, width, and height of the items placed in the space to be sterilized respectively, L0 is the length of the space to be sterilized, L1 is the distance measured by the infrared distance sensor on the side of the infrared light curtain transmitting end, L2 is the distance measured by the infrared distance sensor on the side of the infrared light curtain receiving end, v is the moving speed of the infrared measurement light curtain on the guide rail, and t is the time for the infrared measurement light curtain to pass through the items.

[0016] According to a preferred embodiment, the detection module further includes a position sensor disposed on the wall surface of the space to be sterilized, and the position sensor is configured to detect the positions of the infrared measurement light curtain and the infrared distance measurement sensor.

[0017] According to a preferred embodiment, the relationship between the number of the detection modules and the number of partitions placed in the space to be sterilized satisfies: N = N1 + 1, N1 ≥ 0, where N is the number of the detection modules and N1 is the number of partitions placed in the space to be sterilized.

[0018] According to a preferred embodiment, the sterilization module is installed on the air hood above the space to be sterilized, and the sterilization module is a plasma generator or a negative ion generator.

[0019] The sterilization system provided by the present invention has at least the following beneficial technical effects:

[0020] The sterilization system of the present invention includes a sterilization module, a detection module, a calculation module, and a control module. Among them, the sterilization module is used to perform sterilization treatment on the space to be sterilized; the detection module is used to detect the parameters of the items placed in the space to be sterilized; the detection module is connected to the calculation module, and the calculation module calculates the volume of the items placed in the space to be sterilized based on the parameters detected by the detection module; the control module is connected to the sterilization module and the calculation module, and the control module controls the working duration of the sterilization module based on the volume of the items placed in the space to be sterilized. That is, the sterilization system of the present invention considers the relationship between the volume of the items stored by the user and the working duration of the sterilization system, and controls the working duration of the sterilization module based on the volume of the items placed in the space to be sterilized, which can not only meet the sterilization requirements, but also reduce unnecessary energy consumption, and avoid the problems of poor sterilization effect caused by too short working time of the sterilization system or high energy consumption caused by too long working time of the sterilization system. That is, the sterilization system of the present invention solves the technical problem that the working duration of the refrigerator sterilization device in the prior art is fixed and does not consider the change of the volume of the items stored by the user's demand for the working state of the sterilization device.

[0021] On the other hand, for the sterilization system of the present invention, the control module controls the working duration of the sterilization module based on the volume of the items placed in the space to be sterilized, which has the advantage of accurate control, and can avoid the problem that in the prior art, the start and stop of the sterilization system are controlled by detecting the temperature or humidity in the refrigerator, and the temperature and humidity are greatly affected by the items placed in the refrigerator, resulting in deviation of the detection results and inaccurate control of the sterilization system.

[0022] The second object of the present invention is to propose a control method for a sterilization system.

[0023] The control method for the sterilization system according to any one of the technical solutions in the present invention includes the following steps:

[0024] Obtain the parameters of the items placed in the space to be disinfected, and calculate the volume of the items placed in the space to be disinfected based on the parameters of the items placed;

[0025] Control the working duration of the disinfection module based on the volume of the items placed in the space to be disinfected.

[0026] According to a preferred embodiment, the control method of the disinfection system further includes the following steps: monitor the opening and closing state of the door of the space to be disinfected, and control the working duration of the disinfection module based on the opening and closing state of the door of the space to be disinfected and the volume of the items placed in the space to be disinfected.

[0027] According to a preferred embodiment, before obtaining the parameters of the items placed in the space to be disinfected, the following steps are further included:

[0028] Monitor whether the infrared measurement light curtain and the infrared distance sensor are in the initial position;

[0029] When the infrared measurement light curtain and the infrared distance sensor are not in the initial position, control the infrared measurement light curtain and the infrared distance sensor to return to the initial position.

[0030] The control method of the disinfection system provided by the present invention at least has the following beneficial technical effects:

[0031] The control method of the disinfection system according to any one of the technical solutions of the present invention includes the steps of obtaining the parameters of the items placed in the space to be disinfected, calculating the volume of the items placed in the space to be disinfected based on the parameters of the items placed, and controlling the working duration of the disinfection module based on the volume of the items placed in the space to be disinfected, so as to realize the control of the disinfection system. This control method takes into account the relationship between the volume of the items stored by the user and the working duration of the disinfection system, and controls the working duration of the disinfection module based on the volume of the items placed in the space to be disinfected. It can not only meet the disinfection requirements, but also reduce unnecessary energy consumption, avoid the problem that the working time of the disinfection system is too short, resulting in poor disinfection effect, or the working time of the disinfection system is too long, resulting in high energy consumption; on the other hand, this control method also has the advantage of accurate control, and can avoid the problem that in the prior art, the start and stop of the disinfection system are controlled by detecting the temperature or humidity in the refrigerator. The temperature and humidity are greatly affected by the items placed in the refrigerator, and the detection results are deviated, resulting in inaccurate control of the disinfection system.

[0032] The third object of the present invention is to propose a refrigerator.

[0033] The refrigerator of the present invention includes the disinfection system according to any one of the technical methods of the present invention.

[0034] The refrigerator provided by the present invention at least has the following beneficial technical effects:

[0035] The refrigerator of the present invention includes a sterilization system adopting any one of the technical methods of the present invention, so that not only can the refrigerator of the present invention meet the sterilization requirements, but also unnecessary energy consumption can be reduced, and the problem that the sterilization effect is poor due to too short working time of the sterilization system or high energy consumption due to too long working time of the sterilization system can be avoided. On the other hand, the refrigerator of the present invention controls the working duration of the sterilization module based on the volume of the items placed in the space to be sterilized, which has the advantage of accurate control, and can avoid the problem that in the prior art, the start and stop of the sterilization system are controlled by detecting the temperature or humidity in the refrigerator, and the temperature and humidity are greatly affected by the items placed in the refrigerator, resulting in deviation of the detection results and inaccurate control of the sterilization system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is a schematic diagram of a preferred embodiment of the sterilization system of the present invention;

[0038] Figure 2 It is a schematic diagram of the installation of the sterilization system of the first preferred embodiment of the present invention on the refrigerator;

[0039] Figure 3 It is a schematic diagram of the installation of the sterilization system of the second preferred embodiment of the present invention on the refrigerator;

[0040] Figure 4 It is a schematic diagram of a preferred embodiment of the infrared measurement light curtain of the present invention;

[0041] Figure 5 It is a schematic diagram of a preferred embodiment of the sterilization module of the present invention;

[0042] Figure 6 It is a relationship diagram between the opening duration of the sterilization module of the present invention and the sterilization rate;

[0043] Figure 7 It is a flowchart of a preferred embodiment of the control method of the sterilization system of the present invention;

[0044] Figure 8 It is a flowchart of another preferred embodiment of the control method of the sterilization system of the present invention.

[0045] In the figure: 11, sterilization module; 12, detection module; 121, infrared measurement light curtain; 1211, infrared light curtain transmitting end; 1212, infrared light curtain receiving end; 1213, detection channel; 122, infrared distance measuring sensor; 123, guide rail; 124, position sensor; 13, calculation module; 14, control module; 15, door opening detection module; 21, article; 31, partition; 32, refrigerating chamber; 33, refrigerating air hood. Detailed implementation manners

[0046] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope protected by the present invention.

[0047] The following combines the specification appendix Figures 1 to 8 And Embodiments 1 to 3 to describe the sterilization system, control method and refrigerator of the present invention in detail.

[0048] Embodiment 1

[0049] This embodiment describes the sterilization system of the present invention in detail.

[0050] The sterilization system of this embodiment includes a sterilization module 11, a detection module 12, a calculation module 13 and a control module 14, as Figure 1 shown. Preferably, the sterilization module 11 is used for sterilizing the space to be sterilized; the detection module 12 is used for detecting the parameters of the article 21 placed in the space to be sterilized; the detection module 12 is connected to the calculation module 13, and the calculation module 13 calculates the volume of the article 21 placed in the space to be sterilized based on the parameters detected by the detection module 12; the control module 14 is connected to the sterilization module 11 and the calculation module 13, and the control module 14 controls the working duration of the sterilization module 11 based on the volume of the article 21 placed in the space to be sterilized, as Figure 1 shown. More preferably, the parameters of the article 21 include but are not limited to the size parameters and weight parameters of the article 21. More preferably, the calculation module 13 and the control module 14 are hardware devices loaded with corresponding programs. The space to be sterilized is, for example, the refrigerating chamber 32 of a refrigerator.

[0051] The sterilization system of this embodiment includes a sterilization module 11, a detection module 12, a calculation module 13, and a control module 14. Among them, the sterilization module 11 is used to perform sterilization treatment on the space to be sterilized, the detection module 12 is used to detect the parameters of the items 21 placed in the space to be sterilized, the calculation module 13 calculates the volume of the items 21 placed in the space to be sterilized based on the parameters detected by the detection module 12, and the control module 14 controls the working duration of the sterilization module 11 based on the volume of the items 21 placed in the space to be sterilized. That is, the sterilization system of this embodiment takes into account the relationship between the volume of the items stored by the user and the working duration of the sterilization system, and controls the working duration of the sterilization module 11 based on the volume of the items 21 placed in the space to be sterilized. It can not only meet the sterilization requirements, but also reduce unnecessary energy consumption, and avoid the problem that the working time of the sterilization system is too short, resulting in poor sterilization effect, or the working time of the sterilization system is too long, resulting in high energy consumption. That is, the sterilization system of this embodiment solves the problem in the prior art that the working duration of the refrigerator sterilization device is fixed and does not consider the change in the volume of the items stored by the user and the demand for the working state of the sterilization device. On the other hand, in the sterilization system of this embodiment, the control module 14 controls the working duration of the sterilization module 11 based on the volume of the items 21 placed in the space to be sterilized, which has the advantage of accurate control, and can avoid the problem in the prior art that the start and stop of the sterilization system are controlled by detecting the temperature or humidity in the refrigerator. The temperature and humidity are greatly affected by the items 21 placed in the refrigerator, and the detection results are biased, resulting in inaccurate control of the sterilization system.

[0052] According to a preferred embodiment, the calculation module 13 is further configured to calculate the ratio of the volume of the items 21 placed in the space to be sterilized to the volume of the space to be sterilized, and the control module 14 controls the working duration of the sterilization module 11 based on the ratio of the volume of the items 21 placed in the space to be sterilized to the volume of the space to be sterilized. Preferably, when the ratio of the volume of the items 21 placed in the space to be sterilized to the volume of the space to be sterilized is small, the control module 14 controls the working duration of the sterilization module 11 to be short; when the ratio of the volume of the items 21 placed in the space to be sterilized to the volume of the space to be sterilized is large, the control module 14 controls the working duration of the sterilization module 11 to be long. In the sterilization system of the preferred technical solution of this embodiment, the control module 14 controls the working duration of the sterilization module 11 based on the ratio of the volume of the items 21 placed in the space to be sterilized to the volume of the space to be sterilized, which can not only further meet the sterilization requirements and reduce unnecessary energy consumption, but also meet the needs of users' lives.

[0053] According to a preferred embodiment, the sterilization system further includes a door opening detection module 15, such as Figure 2As shown. Preferably, the door opening detection module 15 is disposed at the door of the space to be sterilized. The door opening detection module 15 is used to detect the opening and closing state of the door of the space to be sterilized. And the door opening detection module 15 is further connected to the control module 14. The control module 14 also controls the working duration of the sterilization module 11 based on the opening and closing state of the door of the space to be sterilized, such as Figure 2 As shown. More preferably, the door opening detection module 15 is a position sensor. The door opening detection module 15 can detect the opening and closing state of the door of the space to be sterilized by detecting the position of the door. More preferably, when the door of the space to be sterilized is frequently opened, the control module 14 controls the working duration of the sterilization module 11 to be longer. When the door of the space to be sterilized is opened less frequently, the control module 14 controls the working duration of the sterilization module 11 to be shorter. In the sterilization system of the preferred technical solution of this embodiment, the control module 14 also controls the working duration of the sterilization module 11 based on the opening and closing state of the door of the space to be sterilized, which can further meet the sterilization requirements and reduce unnecessary energy consumption.

[0054] According to a preferred embodiment, when within a preset duration, the door of the space to be sterilized is opened at least once and the door of the space to be sterilized is in the closed state, the control module 14 controls the working duration of the sterilization module 11 in the following manner: when 0 < V / V0 ≤ 0.25, the control module 14 controls the working duration of the sterilization module 11 to be the first duration; when 0.25 < V / V0 ≤ 0.50, the control module 14 controls the working duration of the sterilization module 11 to be the second duration; when 0.50 < V / V0 ≤ 0.75, the control module 14 controls the working duration of the sterilization module 11 to be the third duration; when 0.75 < V / V0 < 1, the control module 14 controls the working duration of the sterilization module 11 to be the fourth duration; where V is the volume of the items 21 placed in the space to be sterilized, and V0 is the volume of the space to be sterilized. Preferably, the first duration is 4h, the second duration is 8h, the third duration is 12h, and the fourth duration is 16h. When within the preset duration, the door of the space to be sterilized is not opened, the control module 14 controls the working duration of the sterilization module 11 in the following manner: the control module 14 controls the working duration of the sterilization module 11 to be the fifth duration. Preferably, the fifth duration is 2h. In the sterilization system of the preferred technical solution of this embodiment, the control module 14 controls the working duration of the sterilization module 11 based on two conditions: the opening and closing state of the door of the space to be sterilized and the ratio of the volume of the items 21 placed in the space to be sterilized to the volume of the space to be sterilized, which can further meet the sterilization requirements and reduce unnecessary energy consumption.

[0055] According to a preferred embodiment, the detection module 12 includes an infrared measurement light curtain 121, an infrared distance sensor 122, and a guide rail 123, as Figure 2 and Figure 3As shown. Preferably, the guide rails 123 are installed on opposite sides of the space to be sterilized. The infrared measurement light curtain 121 and the infrared distance measurement sensor 122 are slidably installed on the guide rails 123, and the infrared distance measurement sensor 122 is arranged above or below the infrared measurement light curtain 121, as Figure 2 and Figure 3 shown. More preferably, the guide rail 123 is a micro linear guide rail, which can be composed of a ball screw and a linear guide rail, or can be composed of a synchronous belt and its synchronous belt drive gear. When the micro linear guide rail moves, the friction is very small, and only a small power is required to move the infrared measurement light curtain 121 and the infrared distance measurement sensor 122. The infrared measurement light curtain 121 and the infrared distance measurement sensor 122 move at a uniform speed on the guide rail 123. More preferably, the guide rail 123 is installed on opposite side surfaces of the space to be sterilized. More preferably, the infrared distance measurement sensor 122 is arranged below the infrared measurement light curtain 121, as Figure 2 and Figure 3 shown. In the sterilization system of the preferred technical solution of this embodiment, the infrared measurement light curtain 121 and the infrared distance measurement sensor 122 are slidably installed on the guide rail 123. When measuring the parameters of the item 21 placed in the space to be sterilized, the infrared measurement light curtain 121 and the infrared distance measurement sensor 122 can slide on the guide rail 123, so as to dynamically detect the parameters of the item 21 placed in the space to be sterilized, improve the measurement accuracy, and avoid the problem of large measurement errors caused by the fixed position of the detection component in the prior art.

[0056] According to a preferred embodiment, the infrared measurement light curtain 121 includes an infrared light curtain transmitting end 1211, an infrared light curtain receiving end 1212, and a detection channel 1213, as Figure 4 shown. Preferably, the detection channels 1213 are arranged at intervals along the height direction of the guide rail 123 and the width direction of the space to be sterilized. The infrared light curtain transmitting end 1211 and the infrared light curtain receiving end 1212 are arranged along the width direction of the space to be sterilized, and the infrared light curtain transmitting end 1211 and the infrared light curtain receiving end 1212 are respectively slidably arranged on the guide rails 123 located on opposite sides of the space to be sterilized. The infrared light curtain transmitting end 1211 is used to emit infrared light, and the infrared light curtain receiving end 1212 is used to receive infrared light, as Figure 4 shown. In the sterilization system of the preferred technical solution of this embodiment, the infrared measurement light curtain 121 can generate a light ray array at a fixed interval, so as to further improve the measurement accuracy of the parameters of the item 21 placed in the space to be sterilized.

[0057] Preferably, the infrared ranging sensor 122 includes a pair of infrared signal emitting tubes and a receiving diode. Among them, the infrared signal emitting tubes emit infrared signals of a specific frequency, and the receiving diode receives signals of this frequency. When the detection direction of the infrared ray encounters the placed item 21, the infrared signal is reflected back and received by the infrared signal emitting tubes. After processing, the length of the placed item 21 is calculated by the calculation module 13.

[0058] Specifically, for the sterilization system of the preferred technical solution of this embodiment, the principle of the detection module 12 for measuring the volume of the item 21 is as follows: After the infrared measurement light curtain 121 and the infrared ranging sensor 122 are in the initial position, the infrared light emitted by the infrared light curtain transmitting end 1211 directly irradiates the infrared light curtain receiving end 1212 to form a light curtain. When the light curtain passes through the item 21, the item 21 will block a part of the infrared light, making the corresponding infrared light curtain receiving end 1212 unable to receive information. The infrared measurement light curtain 121 and the infrared ranging sensor 122 start to scan one by one along the detection channel 1213 in the vertical direction. When the infrared light emitted by the infrared light curtain transmitting end 1211 is received by the corresponding infrared light curtain receiving end 1212, or when the infrared light emitted by the infrared light curtain transmitting end 1211 is blocked, the scanning of one detection channel 1213 is completed. Then, it turns to the next detection channel 1213 until all the detection channels 1213 are completed, which is one scanning cycle. The infrared ranging sensor 122 is arranged below the infrared measurement light curtain 121, and the infrared ranging sensor 122 can move with the movement of the infrared measurement light curtain 121. When the infrared light emitted by the infrared light curtain transmitting end 1211 is blocked, the infrared ranging sensors 122 on both sides of the guide rails 123 respectively measure the distance between them and the item 21, and then the length of the item 21 can be calculated according to the length of the space to be sterilized. At the same time, in one scanning cycle, parameters such as the blocked and received infrared light, the distance between two adjacent detection channels 1213, the moving speeds of the infrared measurement light curtain 121 and the infrared ranging sensor 122, and the time when the infrared measurement light curtain 121 and the infrared ranging sensor 122 pass through the item 21 are recorded. Then, based on the recorded parameters, the calculation module 13 can calculate the width and height of the item 21.

[0059] According to a preferred embodiment, the calculation module 13 calculates the volume of the article 21 placed in the space to be sterilized according to the following formula: V = L×W×H, where L = L0 - L1 - L2, and H = v×t. Here, L, W, and H are respectively the length, width, and height of the article 21 placed in the space to be sterilized, L0 is the length of the space to be sterilized, L1 is the distance measured by the infrared distance sensor 122 on the side of the infrared light curtain transmitting end 1211, L2 is the distance measured by the infrared distance sensor 122 on the side of the infrared light curtain receiving end 1212, v is the moving speed of the infrared measurement light curtain 121 on the guide rail 123, and t is the time for the infrared measurement light curtain 121 to pass through the article 21. Preferably, based on the recorded data, the calculation module 13 can divide the article 21 into multiple small parts according to the segmentation method, calculate the volume of each small part, and then obtain the total volume of the article 21. Without limitation, the calculation module 13 can also calculate the volume of the article 21 according to other schemes. The sterilization system of the preferred technical solution of this embodiment can improve the accuracy of volume measurement of the article 21 by dynamically detecting the parameters of the article 21 placed in the space to be sterilized.

[0060] According to a preferred embodiment, the detection module 12 further includes a position sensor 124. The position sensor 124 is disposed on the wall surface of the space to be sterilized, and the position sensor 124 is used to detect the positions of the infrared measurement light curtain 121 and the infrared distance sensor 122, as Figure 2 and Figure 3 shown. Specifically, when it is necessary to detect the parameters of the article 21 placed in the space to be sterilized, when the position sensor 124 detects that the infrared measurement light curtain 121 and the infrared distance sensor 122 are not in the initial positions, it controls the infrared measurement light curtain 121 and the infrared distance sensor 122 to return to the initial positions, and then starts scanning; when the position sensor 124 detects that the infrared measurement light curtain 121 and the infrared distance sensor 122 are in the initial positions, it can directly start scanning. The sterilization system of the preferred technical solution of this embodiment further includes a position sensor 124. Through the monitoring function of the position sensor 124, it can ensure that the infrared measurement light curtain 121 and the infrared distance sensor 122 start scanning from the initial positions, thereby ensuring the accuracy of parameter detection of the article 21 placed in the space to be sterilized.

[0061] According to a preferred embodiment, the relationship between the number of the detection modules 12 and the number of the partitions 31 placed in the space to be sterilized satisfies: N = N1 + 1, where N1 ≥ 0. Here, N is the number of the detection modules 12, and N1 is the number of the partitions 31 placed in the space to be sterilized. That is: when no partition 31 is placed in the space to be sterilized, the number of the detection modules 12 is one group, as Figure 2As shown in the figure; when a partition 31 is placed in the space to be disinfected, the partition 31 divides the space to be disinfected into two storage spaces. The number of detection modules 12 is two groups, and the two groups of detection modules 12 are respectively installed in the two storage spaces. Correspondingly, the volume of the items 21 placed in the space to be disinfected should be the sum of the volumes of the items 21 measured by each detection module 12, such as Figure 3 shown. In the disinfection system of the preferred technical solution of this embodiment, when a partition 31 is provided in the disinfection space, a detection module 12 is provided in each storage space, so as to accurately detect the total volume of the items 21 placed in the space to be disinfected.

[0062] According to a preferred embodiment, the disinfection module 11 is installed on the air hood above the space to be disinfected, and the disinfection module 11 is a plasma generator or a negative ion generator. When the space to be disinfected is the refrigerating chamber 32 of a refrigerator, the disinfection module 11 is installed on the refrigerating air hood 33, as Figure 5 shown. Preferably, the disinfection module 11 is a plasma generator. The plasma generator ionizes air through high voltage to generate air plasma. The plasma is gaseous and can be diffused to the entire space to be disinfected through air circulation to achieve full-space disinfection. In the disinfection system of the preferred technical solution of this embodiment, the disinfection module 11 is installed on the air hood above the space to be disinfected, which can facilitate the faster dispersion of the disinfection active substance into the space to be disinfected, thereby enhancing the disinfection effect. On the other hand, in the disinfection system of the preferred technical solution of this embodiment, the disinfection module 11 is a plasma generator or a negative ion generator, which is non-contact sterilization and can effectively kill bacteria in the compartment space.

[0063] Figure 6 The figure shows the relationship diagram between the opening duration of the disinfection module 11 and the disinfection rate. From Figure 6 it can be seen that when the disinfection module 11 is a plasma generator, the disinfection module 11 of the preferred technical solution of this embodiment can meet the requirement that the disinfection rate is greater than 90% in GB 21551.4-20xx "Special Requirements for Antibacterial, Disinfection and Purification Functions of Household and Similar Electrical Appliances - Refrigerators" (revised version) after acting for 2 hours.

[0064] According to a preferred embodiment, the sterilization system may further include a data acquisition module, a storage module, and a timing module. Among them, the data acquisition module is connected to the detection module 12 and the calculation module 13, and the data acquisition module is used to collect the data detected by the detection module 12 and send the collected data to the calculation module 13; the storage module is connected to the detection module 12, and the storage module is used to store the data obtained during the detection process of the detection module 12. Without limitation, the storage module may also store the remaining data in the sterilization system; the timing module is used to record the working duration of the sterilization module 11, and the timing module is also connected to the control module 14, so that after the sterilization module 11 reaches the preset working duration, the control module 14 can control the sterilization module 11 to turn off.

[0065] Embodiment 2

[0066] This embodiment details the control method of the sterilization system of the present invention.

[0067] Figure 7 The flowchart of the control method of the sterilization system in this embodiment is shown. As Figure 7 shown, the control method of the sterilization system of any one of the technical solutions in Embodiment 1 includes the following steps:

[0068] Step 1: Obtain the parameters of the items 21 placed in the space to be sterilized, and calculate the volume of the items 21 placed in the space to be sterilized based on the parameters of the items 21.

[0069] Step 2: Control the working duration of the sterilization module 11 based on the volume of the items 21 placed in the space to be sterilized.

[0070] The control method of the sterilization system of any one of the technical solutions in Embodiment 1 includes the steps of obtaining the parameters of the items 21 placed in the space to be sterilized, calculating the volume of the items 21 placed in the space to be sterilized based on the parameters of the items 21, and controlling the working duration of the sterilization module 11 based on the volume of the items 21 placed in the space to be sterilized, so as to realize the control of the sterilization system. This control method takes into account the relationship between the volume of the items stored by the user and the working duration of the sterilization system, and controls the working duration of the sterilization module 11 based on the volume of the items 21 placed in the space to be sterilized. It can not only meet the sterilization requirements, but also reduce unnecessary energy consumption, avoid the problem that the working time of the sterilization system is too short, resulting in poor sterilization effect, or the working time of the sterilization system is too long, resulting in high energy consumption; on the other hand, this control method also has the advantage of accurate control, and can avoid the problem that in the prior art, the start and stop of the sterilization system are controlled by detecting the temperature or humidity in the refrigerator, and the temperature and humidity are greatly affected by the items 21 placed in the refrigerator, and the detection results are biased, resulting in inaccurate control of the sterilization system.

[0071] According to a preferred embodiment, the control method of the sterilization system further includes the following steps: monitoring the opening and closing state of the door body of the space to be sterilized, and controlling the working duration of the sterilization module 11 based on the opening and closing state of the door body of the space to be sterilized and the volume of the items 21 placed in the space to be sterilized, as Figure 8 shown. In the control method of the preferred technical solution of this embodiment, by controlling the working duration of the sterilization module 11 based on the opening and closing state of the door body of the space to be sterilized and the volume of the items 21 placed in the space to be sterilized, the sterilization requirements can be further met and unnecessary energy consumption can be reduced.

[0072] According to a preferred embodiment, before obtaining the parameters of the items 21 placed in the space to be sterilized, the following steps are further included: monitoring whether the infrared measurement light curtain 121 and the infrared distance sensor 122 are in the initial position; when the infrared measurement light curtain 121 and the infrared distance sensor 122 are not in the initial position, controlling the infrared measurement light curtain 121 and the infrared distance sensor 122 to return to the initial position, as Figure 8 shown. In the control method of the preferred technical solution of this embodiment, before obtaining the parameters of the items 21 placed in the space to be sterilized, when the infrared measurement light curtain 121 and the infrared distance sensor 122 are not in the initial position, controlling the infrared measurement light curtain 121 and the infrared distance sensor 122 to return to the initial position can ensure that the infrared measurement light curtain 121 and the infrared distance sensor 122 start scanning from the initial position, thereby ensuring the accuracy of the detection of the parameters of the items 21 placed in the space to be sterilized.

[0073] Embodiment 3

[0074] This embodiment will describe the refrigerator of the present invention in detail.

[0075] The refrigerator of this embodiment includes the sterilization system of any one of the technical solutions in Embodiment 1. The remaining structures of the refrigerator can be the same as those in the prior art and will not be described in detail here.

[0076] Since the refrigerator of this embodiment includes the sterilization system of any one of the technical methods in Embodiment 1, it can not only make the refrigerator of this embodiment meet the sterilization requirements, but also reduce unnecessary energy consumption, and avoid the problem that the working time of the sterilization system is too short, resulting in poor sterilization effect, or the working time of the sterilization system is too long, resulting in high energy consumption. On the other hand, the refrigerator of this embodiment controls the working duration of the sterilization module 11 based on the volume of the items 21 placed in the space to be sterilized, which has the advantage of accurate control, and can avoid the problem in the prior art that the start and stop of the sterilization system are controlled by detecting the temperature or humidity in the refrigerator. Since the temperature and humidity are greatly affected by the items 21 placed in the refrigerator, the detection results are deviated, resulting in inaccurate control of the sterilization system.

[0077] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and for the content not detailed in some embodiments, reference can be made to the same or similar content in other embodiments.

[0078] It should be noted that in the description of the present invention, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" or "many" refers to at least two.

[0079] It should be understood that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time; when an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. In addition, the "connection" used here may include a wireless connection; the phrase "and / or" includes any unit and all combinations of one or more of the associated listed items.

[0080] Any process or method description shown in the flowchart or described in other ways herein can be understood as: a module, segment, or part of code representing executable instructions including one or more steps for implementing a specific logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations, where the functions can be executed in a manner that is not in the order shown or discussed, including in a substantially simultaneous manner according to the functions involved or in a reverse order, which should be understood by those skilled in the technical field to which the embodiments of the present invention belong.

[0081] It should be understood that each part of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following well-known technologies in the art can be used: discrete logic circuits with logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits with appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0082] Those of ordinary skill in the art of the present technology can understand that all or part of the steps carried by the methods in the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0083] In addition, in each embodiment of the present invention, each functional unit may be integrated into a processing module, or each unit may exist physically alone, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0084] The above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disc, or the like.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A sterilization system, characterized in that, It includes a sterilization module (11), a detection module (12), a calculation module (13) and a control module (14). Among them, the sterilization module (11) is used to perform sterilization treatment on the space to be sterilized; the detection module (12) is used to detect the parameters of the items (21) placed in the space to be sterilized; the detection module (12) is connected to the calculation module (13), and the calculation module (13) calculates the volume of the items (21) placed in the space to be sterilized based on the parameters detected by the detection module (12); the control module (14) is connected to the sterilization module (11) and the calculation module (13), and the control module (14) controls the working duration of the sterilization module (11) based on the volume of the items (21) placed in the space to be sterilized; the calculation module (13) is also used to calculate the ratio of the volume of the items (21) placed in the space to be sterilized to the volume of the space to be sterilized, and the control module (14) controls the working duration of the sterilization module (11) based on the ratio of the volume of the items (21) placed in the space to be sterilized to the volume of the space to be sterilized; it further includes a door opening detection module (15). The door opening detection module (15) is arranged at the door body of the space to be sterilized, and the door opening detection module (15) is used to detect the opening and closing state of the door body of the space to be sterilized; and the door opening detection module (15) is also connected to the control module (14), and the control module (14) also controls the working duration of the sterilization module (11) based on the opening and closing state of the door body of the space to be sterilized.

2. The sterilization system according to claim 1, wherein When within a preset duration, the door body of the space to be sterilized is opened at least once and the door body of the space to be sterilized is in the closed state, the control module (14) controls the working duration of the sterilization module (11) in the following manner: When 0 < V / V0 ≤ 0.25, the control module (14) controls the working duration of the sterilization module (11) to be the first duration; when 0.25 < V / V0 ≤ 0.50, the control module (14) controls the working duration of the sterilization module (11) to be the second duration; When 0.50 < V / V0 ≤ 0.75, the control module (14) controls the working duration of the sterilization module (11) to be the third duration; When 0.75 < V / V0 < 1, the control module (14) controls the working duration of the sterilization module (11) to be the fourth duration; When within a preset duration, the door body of the space to be sterilized is not opened, the control module (14) controls the working duration of the sterilization module (11) in the following manner: The control module (14) controls the working duration of the sterilization module (11) to be the fifth duration; wherein, V is the volume of the items (21) placed in the space to be sterilized, and V0 is the volume of the space to be sterilized.

3. The sterilization system according to claim 1, characterized in that, The detection module (12) includes an infrared measurement light curtain (121), an infrared distance measurement sensor (122) and a guide rail (123). Among them, The guide rails (123) are installed on opposite sides of the space to be sterilized. The infrared measurement light curtain (121) and the infrared distance measurement sensor (122) are slidably installed on the guide rails (123), and the infrared distance measurement sensor (122) is arranged above or below the infrared measurement light curtain (121).

4. The sterilization system according to claim 3, characterized in that, The infrared measurement light curtain (121) includes an infrared light curtain transmitting end (1211), an infrared light curtain receiving end (1212), and a detection channel (1213). Among them, the detection channels (1213) are arranged at intervals along the height direction of the guide rails (123) and the width direction of the space to be sterilized. The infrared light curtain transmitting end (1211) and the infrared light curtain receiving end (1212) are arranged along the width direction of the space to be sterilized, and the infrared light curtain transmitting end (1211) and the infrared light curtain receiving end (1212) are respectively slidably arranged on the guide rails (123) located on opposite sides of the space to be sterilized. The infrared light curtain transmitting end (1211) is used to emit infrared light, and the infrared light curtain receiving end (1212) is used to receive infrared light.

5. The sterilization system according to claim 4, wherein The calculation module (13) calculates the volume of the item (21) placed in the space to be sterilized according to the following formula: V = L × W × H, L = L0 - L1 - L2, H = v × t, where L, W, and H are respectively the length, width, and height of the item (21) placed in the space to be sterilized, L0 is the length of the space to be sterilized, L1 is the distance measured by the infrared distance measurement sensor (122) on the side of the infrared light curtain transmitting end (1211), L2 is the distance measured by the infrared distance measurement sensor (122) on the side of the infrared light curtain receiving end (1212), v is the moving speed of the infrared measurement light curtain (121) on the guide rails (123), and t is the time for the infrared measurement light curtain (121) to pass through the item (21) placed in the space to be sterilized.

6. The sterilization system according to any one of claims 3 to 5, characterized in that The detection module (12) further includes a position sensor (124). The position sensor (124) is arranged on the wall surface of the space to be sterilized, and the position sensor (124) is used to detect the positions of the infrared measurement light curtain (121) and the infrared distance measurement sensor (122).

7. The sterilization system according to claim 6, wherein The relationship between the number of the detection modules (12) and the number of the partitions (31) placed in the space to be sterilized satisfies: N = N1 + 1, N1 ≥ 0, where N is the number of the detection modules (12) and N1 is the number of the partitions (31) placed in the space to be sterilized.

8. The sterilization system according to claim 1, characterized in that, The sterilization module (11) is installed on the air hood above the space to be sterilized, and the sterilization module (11) is a plasma generator or a negative ion generator.

9. A control method for a sterilization system according to any one of claims 1 to 8, characterized in that, Including the following steps: Obtain the parameters of the item (21) placed in the space to be sterilized, and calculate the volume of the item (21) placed in the space to be sterilized based on the parameters of the item (21) placed in the space to be sterilized; Control the working duration of the sterilization module (11) based on the volume of the item (21) placed in the space to be sterilized.

10. The control method of the sterilization system according to claim 9, characterized in that, It further includes the following steps: monitoring the opening and closing state of the door body of the space to be disinfected, and controlling the working duration of the disinfection module (11) based on the opening and closing state of the door body of the space to be disinfected and the volume of the items (21) placed in the space to be disinfected.

11. The control method of the sterilization system according to claim 9 or 10, characterized in that, Before obtaining the parameters of the items (21) placed in the space to be disinfected, it further includes the following steps: Monitoring whether the infrared measurement light curtain (121) and the infrared distance measurement sensor (122) are in the initial positions; When the infrared measurement light curtain (121) and the infrared distance measurement sensor (122) are not in the initial positions, controlling the infrared measurement light curtain (121) and the infrared distance measurement sensor (122) to return to the initial positions.

12. A refrigerator, characterized in that, It includes the disinfection system according to any one of claims 1 to 8.

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