CN115435530A - Refrigerator and sterilization control method thereof - Google Patents
Refrigerator and sterilization control method thereof Download PDFInfo
- Publication number
- CN115435530A CN115435530A CN202211087147.XA CN202211087147A CN115435530A CN 115435530 A CN115435530 A CN 115435530A CN 202211087147 A CN202211087147 A CN 202211087147A CN 115435530 A CN115435530 A CN 115435530A
- Authority
- CN
- China
- Prior art keywords
- sterilization
- refrigerator
- distance
- compartment
- illumination intensity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a refrigerator and a sterilization control method thereof, wherein the refrigerator comprises a box body, a refrigeration system, a sterilization device and a controller, the sterilization device is arranged on a drawer cover plate of a refrigerator chamber and is electrically connected with the controller, the sterilization device comprises a light source and a distance meter, the light source can directly irradiate the surface of food materials in the chamber, and the distance meter is used for detecting the distance between the food materials in the chamber and the sterilization device in real time; the controller is configured to start the sterilization device to enter a preset sterilization mode after the state of the refrigerator door body and the state of the compartment drawer meet preset sterilization starting conditions, determine a corresponding illumination intensity level according to a distance interval where the distance is located, and control the sterilization device to sterilize according to the illumination intensity level. According to the invention, the food materials are sterilized by illumination with the short-wave visible blue light, so that the food materials and the materials in the refrigerator are not deteriorated under the premise of ensuring high-efficiency sterilization, the human body is not biologically damaged, and the cost is low.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a sterilization control method thereof.
Background
With the improvement of living standard, people pay more and more attention to bacteria and peculiar smell in the refrigerator. Various foods are stored in the refrigerator for a long time, so that bacteria are easy to breed in the refrigerator, and peculiar smell is generated due to the breeding of microorganisms such as bacteria and the like and the long-time placement of various foods in a closed space. To solve this problem, antibacterial liners, door handles, door seals, etc. have been developed, but antibacterial materials are passive sterilization methods and can only act when microorganisms such as bacteria come into contact with them.
At present, the most widely applied ultraviolet ray belongs to the field of refrigerator spectrum sterilization, the technology is mature, the sterilization efficiency is high, but the ultraviolet ray harms human bodies, food materials, materials in refrigerators and the like, and the comprehensive cost is high.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a refrigerator and a sterilization control method thereof, which are characterized in that short-wave visible blue light is adopted to carry out illumination sterilization on food materials, no degradation influence is caused on the food materials and materials in the refrigerator on the premise of ensuring high-efficiency sterilization, no biological hazard is caused on a human body, and the cost is low.
A first embodiment of the present invention provides a refrigerator including:
the refrigerator comprises a refrigerator body, a door body and a door body, wherein the refrigerator body is used as a supporting structure of the refrigerator and is internally provided with a plurality of compartments;
the refrigerating system is arranged in the box body and comprises a compressor, an evaporator and a fan, the compressor is used for providing power for the refrigerating cycle of the refrigerator, and the fan is used for enabling air to enter the evaporator of the refrigerator for heat exchange and sending the air after heat release to the compartment of the refrigerator;
the sterilizing device is arranged on a drawer cover plate of the compartment and is electrically connected with the controller, the sterilizing device comprises a light source and a distance meter, the light source can directly irradiate the surface of the food material in the compartment, and the distance meter is used for detecting the distance between the food material in the compartment and the sterilizing device in real time;
the controller is configured to start the sterilization device after the state of the refrigerator door body and the state of the compartment drawer meet a preset sterilization starting condition, enter a preset sterilization mode, determine a corresponding illumination intensity grade according to a distance interval where the distance is located, and control the sterilization device to sterilize according to the illumination intensity grade.
In the refrigerator provided in the second embodiment of the present invention, the refrigerator door and the compartment drawer are both provided with a magnetic attraction sensing device, and the sterilization device is turned on after the state of the refrigerator door and the state of the compartment drawer satisfy a preset sterilization start condition, specifically including:
detecting the state of the refrigerator door body and the state of the compartment drawer in real time through the magnetic induction device;
when the refrigerator door body is opened and the compartment drawer is closed, the sterilizing device is opened for a preset time and then closed;
when the refrigerator door body is opened and the compartment drawer is opened, the sterilizing device is closed;
and when the refrigerator door body is closed and the compartment drawer is closed, the sterilizing device is opened.
In a refrigerator according to a third embodiment of the present invention, the preset sterilization mode includes a normal sterilization mode and a power sterilization mode; when the sterilization device is in the conventional sterilization mode, controlling the light source to enter a cyclic irradiation mode, and continuously operating the sterilization device; and when the sterilizing device is in the powerful sterilizing mode, controlling the light source to enter a normally open irradiation mode, stopping the sterilizing device after running for a preset time, and entering the conventional sterilizing mode after stopping.
In a refrigerator provided by a fourth embodiment of the present invention, before determining a corresponding illumination intensity level according to a distance interval where the distance is located, the method further includes:
according to the distance, the distance is determined by the formula E = ah 4 -bh 3 +ch 2 + dh + e, calculating to obtain corresponding light intensityDegree; wherein E is the illumination intensity, h is the distance between the food material in the compartment and the sterilizing device, and a, b, c, d and E are constants;
and setting a preset distance interval and an illumination intensity grade corresponding to the distance interval according to the distance and the illumination intensity obtained by calculation.
In the refrigerator according to the fifth embodiment of the present invention, a reflective film is disposed on an inner surface of the compartment drawer, and light emitted from the light source is irradiated on the reflective film to reflect light and refract light, so that the light uniformly covers the inside of the compartment drawer.
In the refrigerator provided by the sixth embodiment of the present invention, the light source includes several blue LED beads connected in parallel, and then the controller is further configured to:
and respectively adjusting the illumination intensity of the blue light LED lamp beads in the corresponding illumination areas according to the distance between the food materials in the different illumination areas and the sterilization device.
A sterilization control method for a refrigerator provided in a seventh embodiment of the present invention is applied to a refrigerator including a box body, a refrigeration system, and a sterilization device, wherein the box body is internally provided with a plurality of compartments, the refrigeration system includes a compressor, an evaporator, and a fan, the sterilization device is mounted on a drawer cover plate of the compartments, the sterilization device includes a light source and a distance meter, the light source can directly irradiate the surface of food materials in the compartments, the distance meter is used for detecting the distance between the food materials in the compartments and the sterilization device in real time, and the sterilization control method includes:
when the state of the refrigerator door body and the state of the compartment drawer meet preset sterilization starting conditions, starting the sterilization device and entering a preset sterilization mode;
and determining a corresponding illumination intensity grade according to the distance interval where the distance is located, and controlling the sterilization device to sterilize according to the illumination intensity grade.
In the sterilization control method for a refrigerator provided by the eighth embodiment of the present invention, the refrigerator door body and the compartment drawer are both provided with a magnetic attraction sensing device, and the sterilization device is turned on when the state of the refrigerator door body and the state of the compartment drawer satisfy a preset sterilization starting condition, specifically including:
detecting the state of the refrigerator door body and the state of the compartment drawer in real time through the magnetic induction device;
when the refrigerator door body is opened and the compartment drawer is closed, the sterilizing device is opened for a preset time and then closed;
when the refrigerator door body is opened and the compartment drawer is opened, the sterilizing device is closed;
and when the refrigerator door body is closed and the compartment drawer is closed, the sterilizing device is opened.
In a sterilization control method of a refrigerator according to a ninth embodiment of the present invention, the preset sterilization mode includes a normal sterilization mode and a power sterilization mode; when the sterilization device is in the conventional sterilization mode, controlling the light source to enter a cyclic irradiation mode, and continuously operating the sterilization device; and when the sterilizing device is in the powerful sterilizing mode, controlling the light source to enter a normally open irradiation mode, stopping the sterilizing device after running for a preset time, and entering the conventional sterilizing mode after stopping.
In a method for controlling sterilization of a refrigerator according to a tenth embodiment of the present invention, before determining a corresponding light intensity level according to a distance interval where the distance is located, the method further includes:
according to the distance by the formula E = ah 4 -bh 3 +ch 2 + dh + e, calculating to obtain corresponding illumination intensity; wherein E is the illumination intensity, h is the distance between the food materials in the chamber and the sterilization device, and a, b, c, d and E are constants;
and setting a preset distance interval and an illumination intensity grade corresponding to the distance interval according to the distance and the illumination intensity obtained by calculation.
Compared with the prior art, the refrigerator and the sterilization control method thereof provided by the embodiment of the invention have the beneficial effects that: through installing sterilizing equipment on the drawer apron in refrigerator compartment, sterilizing equipment includes light source and distancer, the light source can direct irradiation edible material surface in the compartment, the distancer is used for real-time detection edible material in the compartment with distance between the sterilizing equipment. And after the state of the refrigerator door body and the state of the compartment drawer meet preset sterilization starting conditions, starting the sterilization device, entering a preset sterilization mode, determining a corresponding illumination intensity grade according to a distance interval where the distance is located, and controlling the sterilization device to sterilize according to the illumination intensity grade. According to the embodiment of the invention, the food materials are subjected to illumination sterilization by adopting the short-wave visible blue light, so that the food materials and materials in the refrigerator are not deteriorated under the premise of ensuring high-efficiency sterilization, no biological hazard is caused to human bodies, and the cost is low.
Drawings
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cabinet of a refrigerator according to an embodiment of the present invention;
FIG. 3 is a schematic structural view illustrating a sterilization device installed in a compartment of a refrigerator according to an embodiment of the present invention;
fig. 4 is an exploded view of a sterilization apparatus in a refrigerator according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a drawer cover plate in a sterilization device of a refrigerator according to an embodiment of the present invention;
fig. 6 is a partially enlarged view of a drawer cover in a sterilizing apparatus of a refrigerator according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating a magnetic attraction sensing device in a refrigerator according to an embodiment of the present invention;
fig. 8 is a schematic view illustrating an illumination effect of a reflective film in a refrigerator according to an embodiment of the present invention;
fig. 9 is a schematic view illustrating an illumination area in a refrigerator according to an embodiment of the present invention;
fig. 10 is a flowchart illustrating a sterilization control method for a refrigerator according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention. The refrigerator provided in the embodiment of the invention comprises:
a cabinet 10 serving as a support structure of the refrigerator and having a plurality of compartments therein;
the refrigerating system 20 is arranged in the refrigerator body 10 and comprises a compressor, an evaporator and a fan, wherein the compressor is used for providing power for the refrigerating cycle of the refrigerator, and the fan is used for enabling air to enter the evaporator of the refrigerator for heat exchange and sending the air after heat release to the compartment of the refrigerator;
the sterilizing device 30 is arranged on a drawer cover plate of the chamber and is electrically connected with the controller, the sterilizing device comprises a light source and a distance measuring instrument, the light source can directly irradiate the surface of the food material in the chamber, and the distance measuring instrument is used for detecting the distance between the food material in the chamber and the sterilizing device in real time;
and the controller 40 is configured to, after the state of the refrigerator door body and the state of the compartment drawer meet a preset sterilization starting condition, start the sterilization device, enter a preset sterilization mode, determine a corresponding illumination intensity level according to a distance interval where the distance is located, and control the sterilization device to sterilize at the illumination intensity level.
Specifically, the refrigerator provided by the embodiment of the present invention includes a refrigerator body 10, a refrigeration system 20, a sterilization device 30, and a controller 40. Referring to fig. 2, fig. 2 is a schematic structural diagram of a refrigerator body according to an embodiment of the present invention. The refrigerator in the present embodiment is of an approximately rectangular parallelepiped shape, and includes a cabinet 10 defining a storage space. The refrigerator body 10 is used as a support structure of a refrigerator, a refrigerating chamber and a freezing chamber are arranged in the refrigerator body, one or more door bodies 200 are arranged at the opening of each chamber, for example, in fig. 2, the chamber at the upper part is the refrigerating chamber, and a double-opening door body is arranged on the refrigerating chamber, wherein the door body 200 comprises a door body shell 210 positioned at the outer side of the refrigerator body 10, a door body liner 220 positioned at the inner side of the refrigerator body 10, an upper end cover 230, a lower end cover 240, and a heat insulation layer positioned among the door body shell 210, the door body liner 220, the upper end cover 230 and the lower end cover 240; typically, the thermal insulation layer is filled with a foam material. The refrigerator performs a cooling operation by a cooling system to provide cooling energy to be transmitted to the compartment so as to maintain the compartment in a constant low temperature state. Specifically, the refrigeration system of the refrigerator in the embodiment of the invention comprises a compressor, a condenser, a condensation preventing pipe, a drying filter, a capillary tube, an evaporator, a gas-liquid separator and a fan, wherein the compressor is used for providing power for the refrigeration cycle of the refrigerator, and the fan is used for enabling air to enter the evaporator of the refrigerator to exchange heat and sending the air after heat release to the compartment of the refrigerator. The operation of the refrigeration system comprises a compression process, a condensation process, a throttling process and an evaporation process.
Wherein, the compression process is as follows: the power cord of the refrigerator is plugged, the compressor starts to work under the condition that the box body has a refrigeration requirement, a low-temperature and low-pressure refrigerant is sucked by the compressor, and is compressed into high-temperature and high-pressure superheated gas in a cylinder of the compressor and then is discharged into the condenser;
the condensation process is as follows: the high-temperature and high-pressure refrigerant gas is radiated by the condenser, the temperature is continuously reduced, the refrigerant gas is gradually cooled to be saturated vapor with normal temperature and high pressure, the refrigerant gas is further cooled to be saturated liquid, the temperature is not reduced any more, the temperature at the moment is called as the condensation temperature, and the pressure of the refrigerant in the whole condensation process is almost unchanged;
the throttling process is as follows: the condensed saturated liquid of the refrigerant flows into a capillary after moisture and impurities are filtered by a drying filter, throttling and pressure reduction are carried out through the capillary, and the refrigerant is changed into wet steam with normal temperature and low pressure;
the evaporation process is as follows: then, the evaporator is vaporized by absorbing heat, so that the temperature of the evaporator and the surrounding temperature of the evaporator are reduced, the refrigerant is changed into low-temperature and low-pressure gas, the refrigerant coming out of the evaporator returns to the compressor after passing through the gas-liquid separator, the processes are repeated, the heat in the refrigerator is transferred to the air outside the refrigerator, and the aim of refrigeration is fulfilled.
For example, please refer to fig. 3, fig. 3 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention, in which a sterilization device is installed in a compartment. The sterilizing device 30 is installed on the drawer cover plate 2 of the compartment drawer 1 and is electrically connected with the controller 40, the sterilizing device comprises a light source and a distance meter, light emitted by the light source can directly irradiate the surface of the food material 4 in the compartment, wherein the range of the illumination curve 5 is preferably 60-120 degrees, namely the illumination angle of the light source is preferably 60-120 degrees. The distance meter is used for detecting the distance between the food material 4 and the sterilizing device 30 in the chamber in real time.
Please refer to fig. 4, 5 and 6, in which fig. 4 is an exploded view of a sterilization device in a refrigerator according to an embodiment of the present invention, fig. 5 is a schematic structural diagram of a drawer cover plate in the sterilization device in a refrigerator according to an embodiment of the present invention, and fig. 6 is a partially enlarged view of the drawer cover plate in the sterilization device in a refrigerator according to an embodiment of the present invention. The sterilization device 30 in this embodiment includes a lamp housing 31, a sealing rubber strip 32, a light source 33, a clip 34, a distance meter 35, a heat sink 36, a substrate 37, and a screw interface 38. Wherein, light source 33 and distancer 35 are integrated on base plate 37, and base plate 37 and radiator 36 are fixed on the drawer cover at top with the screw, and lamp shade 31 is with buckle form fixed mounting in sterilizing equipment's 30 the outside, is provided with joint strip 32 in the lamp shade 31 in order to completely cut off the aqueous vapor, prevents that aqueous vapor from getting into the corruption light source under the high humid condition. The lampshade is made of plastic or glass, can be transparent and can also be in a frosted design. The aluminum radiator is arranged outside the substrate, so that the sterilizing device can radiate well, and the service life is prolonged. The shell of the sterilization device is an aluminum shell, so that a good heat dissipation effect can be ensured. The power line is connected to the refrigerator main control board through the cover plate gap, and the refrigerator main control board controls the sterilization device to work in a unified mode.
It should be noted that, the light source in this embodiment is preferably an LED lamp bead capable of emitting short-wave visible blue light, and the wavelength range is 400nm to 480nm, preferably 400nm to 420nm. The sterilization principle of short-wave visible blue light is different from the ultraviolet sterilization principle (direct irradiation of microorganisms causes interruption of DNA replication and transcription of the microorganisms, and causes death of the microorganisms). The short-wave visible blue light sterilization principle is as follows: porphyrin compounds in microbial cells undergo electronic transition after being irradiated by blue light of 400-420nm to generate active substances such as OH-, hydrogen peroxide, singlet oxygen and the like, and the active substances act on cell walls and cell membranes to cause irreversible oxidative damage to the microbes.
The compartment drawer in this embodiment is preferably of a barrel type construction, and the sterilisation apparatus is mounted directly on the top cover of the barrel, illuminating the drawer compartment vertically. The range finder is preferably an ultrasonic range finder, and may be an infrared range finder, a laser range finder, or the like. The transmitting end sends out sound wave signals, and the sound wave signals return to the receiving end after encountering the blockage of food materials. Starting timing from the transmitted signal, immediately stopping timing after receiving the reflected sound wave, wherein the propagation speed of the sound wave in the air is 340m/s, and calculating the distance between the food material and the sterilizing device according to the time t of the timer to obtain the following parameters: s =340 × t/2. The distance parameter is fed back to the controller by detecting the distance between the food material and the sterilizing device, the controller determines the corresponding illumination intensity grade according to the distance interval where the distance between the food material and the sterilizing device is located, and the sterilizing device is controlled to sterilize at the corresponding illumination intensity grade.
This embodiment will send the sterilizing equipment of the visible blue light of shortwave to install at the top of compartment drawer, and the whole compartment of direct vertical irradiation of light source carries out the illumination to edible material and disinfects, is guaranteeing under the prerequisite of high-efficient sterilization, can not cause the degradation influence to edible material and refrigerator interior material, also does not have biological hazard to the human body. The effective height between the light source and the food materials is detected in real time through the range finder, the illumination intensity is automatically adjusted, and the optimal sterilization performance is achieved. The sterilizing device is convenient to disassemble and assemble, the basic structure of the chamber is not required to be changed, the sterilizing device is directly embedded on the cover plate at the top of the drawer, and the cost is lower.
As one of the optional embodiments, the refrigerator door body and the compartment drawer are both provided with a magnetic induction device, and then after the state of the refrigerator door body and the state of the compartment drawer meet the preset sterilization starting condition, the sterilization device is opened, which specifically includes:
detecting the state of the refrigerator door body and the state of the compartment drawer in real time through the magnetic induction device;
when the refrigerator door body is opened and the compartment drawer is closed, the sterilizing device is opened for a preset time and then closed;
when the refrigerator door body is opened and the compartment drawer is opened, the sterilizing device is closed;
and when the refrigerator door body is closed and the compartment drawer is closed, the sterilizing device is opened.
Specifically, this embodiment sets up refrigerator switch door and sterilizing equipment's control logic for further promoting user experience. Referring to fig. 7, fig. 7 is a schematic position diagram of a magnetic attraction sensing device in a refrigerator according to an embodiment of the present invention. Be equipped with magnetism in the drawer of room and inhale response limit switch device, add the permanent magnet piece in 6 outline framves of drawer, add magnetic induction sensor near the position that 6 outline of drawer placed the magnetic sheet on the handle of drawer 1, discern the distance that the drawer was pulled out with magnetic induction sensor. The magnetic induction sensor is connected with the sterilization device circuit and is controlled by the controller in a unified way. The refrigerator door body is also provided with a magnetic induction limit switch device, and the opening and closing states of the refrigerator door body are identified by the magnetic induction limit switch device. When the refrigerator door body is opened and the compartment drawer is not opened, the sterilizing device is opened and closed after irradiation for a preset time (for example, 30-60 s). When the refrigerator door body and the compartment drawer are both opened, the sterilizing device is closed. When the refrigerator door body and the compartment drawer are both closed, the sterilizing device is opened. Because the magnetic field intensity is reduced along with the increase of the distance between the magnetic sheet and the sensor, when the magnetic field intensity is smaller than a preset value B1, the output level of a switch in the sensor is turned over so as to control the switch to be closed; when the magnetic field intensity is larger than B1, the switch is turned on.
It should be noted that the magnetic induction sensor may be a hall sensor of a switch type. The threshold B1 of the magnetic field strength can be regarded as 0.
As one optional embodiment, the preset sterilization mode includes a normal sterilization mode and a power sterilization mode; when the sterilization device is in the conventional sterilization mode, controlling the light source to enter a cyclic irradiation mode, and continuously operating the sterilization device; and when the sterilizing device is in the powerful sterilizing mode, controlling the light source to enter a normally open irradiation mode, and stopping the sterilizing device after running for a preset time.
Specifically, the sterilization modes preset in the present embodiment include a normal sterilization mode and a power sterilization mode. A strong sterilization button is arranged on the drawer panel or the control panel of the refrigerator door body, and after the strong sterilization button is pressed down, the sterilization device enters a strong sterilization mode. The conventional sterilization mode is used for meeting the sterilization and preservation requirements of users in the daily food material storage process. The powerful sterilization mode can be set to be opened for 1-2 hours each time, is used for intensively and quickly sterilizing food materials newly put into the food materials or food materials with deterioration conditions, and can meet the requirement of a user for eating the food materials in a short time. Therefore, in a conventional sterilization mode, the illumination is circularly started and continuously operated, and the sterilization and preservation requirements of the user in the daily food material storage process are met. In the strong sterilization mode, the illumination is stopped after being constantly turned on for a preset time, and the normal sterilization mode is started after the illumination is stopped, so that the requirement that a user wants to eat food materials in a short time is met.
As one optional embodiment, before determining the corresponding illumination intensity level according to the distance interval where the distance is located, the method further includes:
according to the distance, the distance is determined by the formula E = ah 4 -bh 3 +ch 2 + dh + e, calculating to obtain corresponding illumination intensity; wherein E is the illumination intensity, h is the distance between the food material in the compartment and the sterilizing device, and a, b, c, d and E are constants;
and setting a preset distance interval and an illumination intensity grade corresponding to the distance interval according to the distance and the illumination intensity obtained by calculation.
Specifically, the light radiation energy is inversely proportional to the light irradiation distance, and when the food material is far away from the light source, the light radiation energy needs to be increased so as to achieve the energy required for sterilization; when the food material is close to the light source, the light radiation energy needs to be reduced so as to save energy consumption. Therefore, in the present embodiment, there is a corresponding relationship between the distance h between the food material and the sterilization device and the illumination intensity E, i.e. E = ah 4 -bh 3 +ch 2 + dh + e. Wherein a, b, c, d, and e are constants, and in this embodiment, a =0.001, b =0.039, c =0.505, d =2.539, and e =2.21, then
E＝0.001h 4 -0.039h 3 +0.505h 2 +2.539h+2.21
In the formula: h is the distance between the food materials in the compartment and the sterilizing device, and the unit is cm; e is the illumination intensity in mW.
According to the formula E =0.001h 4 -0.039h 3 +0.505h 2 +2.539h +2.21 meterAfter the corresponding illumination intensity is obtained through calculation, a preset distance interval and an illumination intensity grade corresponding to the distance interval are set according to the distance and the illumination intensity obtained through calculation. For example, the height h of the food material from the sterilization device may range from 0 to 20cm, and 5cm is used as a preset adjustment height for controlling the light intensity level. For example, when the first preset height h1=5cm, the height of the food material from the sterilization device is more than 0 and less than or equal to h and less than or equal to 5cm, the illumination intensity range is calculated according to a formula and is 0-23 mW, the corresponding illumination intensity grade is the first grade, and so on.
When the sterilizing device is in a conventional sterilizing mode, when the height 0 & lt h & lth & lt h1 & gt of the food material recognized by the distance meter to the nearest position of the sterilizing device, the illumination intensity grade is controlled to be first grade; when the height h1 of the food material away from the closest position of the sterilizing device is more than or equal to h2, controlling the illumination intensity level to be in a second level; when the height h2 of the food material to be identified from the nearest position of the sterilizing device is more than h and less than or equal to h3, controlling the illumination intensity grade to be three grade; and when the height h3 of the food material closest to the sterilizing device is more than h and less than or equal to h4, controlling the illumination intensity level to be four levels. And under the conventional sterilization mode, the illumination is circularly started and continuously operated.
When the sterilizing device is in a powerful sterilizing mode, when the height of the food materials, which is identified by the distance meter, at the nearest position of the sterilizing device is more than 0 and less than or equal to h1, the illumination intensity grade is controlled to be one grade; when the height h1 of the food material from the nearest position of the sterilizing device is more than h and less than or equal to h2, controlling the illumination intensity level to be in a second level; when the height h2 of the food material to be identified from the nearest position of the sterilizing device is more than h and less than or equal to h3, controlling the illumination intensity grade to be three grade; and when the height h3 of the food material to be identified from the nearest position of the sterilizing device is more than h and less than or equal to h4, controlling the illumination intensity level to be four levels. The strong sterilization mode is that the illumination is normally opened for a certain time and then is stopped, and then the normal sterilization mode is entered.
As an alternative embodiment, a reflective film is disposed on an inner surface of the compartment drawer, and light emitted by the light source is irradiated on the reflective film to generate light reflection and light refraction, so that the light uniformly covers the inside of the compartment drawer.
Specifically, because the illumination angle of the light source is not adjustable, the light of the vertical illumination cannot cover the whole space in the room, so that the sterilization effect of the place where the illumination cannot reach is difficult to ensure. Although the drawers in the refrigerator have certain light reflecting capacity, in order to further improve the illumination uniformity and the illumination coverage area, the inner surface of the compartment drawer 1 is covered with an LED lamp reflecting film 7 in the embodiment. Referring to fig. 8, fig. 8 is a schematic view illustrating an illumination effect of a reflective film in a refrigerator according to an embodiment of the present invention. The reflective film is made of plastic and contains reflective materials, and when light emitted by the light source irradiates the reflective film, light reflection (such as an illumination reflection curve 8) and light refraction can be generated, so that the light is uniformly conveyed to each part in the compartment, the illumination coverage area is enlarged, and the illumination sterilization effect is effectively improved.
As an optional embodiment, the light source includes several blue LED beads connected in parallel, and the controller is further configured to:
and respectively adjusting the illumination intensity of the blue LED lamp beads in the corresponding illumination areas according to the distance between the food materials in the different illumination areas and the sterilizing device.
Specifically, the light source in this embodiment includes a plurality of blue LED beads, and the wavelength range is 400nm to 480nm, preferably 400nm to 420nm. In this embodiment, the lamp beads can be arranged in parallel, so that the illumination intensity of the lamp beads in different illumination areas can be controlled respectively. Referring to fig. 9, fig. 9 is a schematic view illustrating an illumination area in a refrigerator according to an embodiment of the present invention. The illumination zone 9 of this embodiment in with the drawer divides, for example, divide into four regions A, B, C, D, and lamp pearl in these four illumination zones can be respectively according to eating the material and the distance adjustment illumination intensity between the sterilizing equipment, realizes can both disinfect to the edible material of co-altitude in the space.
Referring to fig. 10, fig. 10 is a flowchart illustrating a sterilization control method for a refrigerator according to an embodiment of the present invention. The sterilization control method provided in the embodiment of the invention is applied to a refrigerator comprising a box body, a refrigeration system and a sterilization device, wherein a plurality of chambers are arranged in the box body, the refrigeration system comprises a compressor, an evaporator and a fan, the sterilization device is installed on a drawer cover plate of the chambers, the sterilization device comprises a light source and a distance meter, the light source can directly irradiate the surfaces of food materials in the chambers, the distance meter is used for detecting the distance between the food materials in the chambers and the sterilization device in real time, and the sterilization control method comprises the following steps:
s1, after the state of a refrigerator door body and the state of the compartment drawer meet a preset sterilization starting condition, starting a sterilization device, and entering a preset sterilization mode;
and S2, determining a corresponding illumination intensity grade according to the distance interval where the distance is located, and controlling the sterilization device to sterilize according to the illumination intensity grade.
As one of the optional embodiments, the refrigerator door body and the compartment drawer are both provided with a magnetic attraction sensing device, and then in S1, after the state of the refrigerator door body and the state of the compartment drawer meet the preset sterilization starting condition, the sterilization device is opened, which specifically includes:
detecting the state of the refrigerator door body and the state of the compartment drawer in real time through the magnetic induction device;
when the refrigerator door body is opened and the compartment drawer is closed, the sterilizing device is opened for a preset time and then closed;
when the refrigerator door body is opened and the compartment drawer is opened, the sterilizing device is closed;
and when the refrigerator door body is closed and the compartment drawer is closed, the sterilizing device is opened.
As one optional embodiment, the preset sterilization mode includes a normal sterilization mode and a power sterilization mode; when the sterilization device is in the conventional sterilization mode, controlling the light source to enter a cyclic irradiation mode, and continuously operating the sterilization device; and when the sterilizing device is in the powerful sterilizing mode, controlling the light source to enter a normally open irradiation mode, and stopping the sterilizing device after the sterilizing device runs for a preset time.
As an optional embodiment, before determining the corresponding illumination intensity level according to the distance interval where the distance is located, the method further includes:
according to whatThe distance is given by the formula E = ah 4 -bh 3 +ch 2 + dh + e, calculating to obtain corresponding illumination intensity; wherein E is the illumination intensity, h is the distance between the food material in the compartment and the sterilizing device, and a, b, c, d and E are constants;
and setting a preset distance interval and an illumination intensity grade corresponding to the distance interval according to the distance and the illumination intensity obtained by calculation.
As an alternative embodiment, a reflective film is disposed on an inner surface of the compartment drawer, and light emitted by the light source is irradiated on the reflective film to generate light reflection and light refraction, so that the light uniformly covers the inside of the compartment drawer.
As an optional embodiment, the light source includes several blue LED beads connected in parallel, and then the controller is further configured to:
and respectively adjusting the illumination intensity of the blue LED lamp beads in the corresponding illumination areas according to the distance between the food materials in the different illumination areas and the sterilizing device.
The embodiment of the invention provides a refrigerator and a sterilization control method thereof. And after the state of the refrigerator door body and the state of the compartment drawer meet preset sterilization starting conditions, starting the sterilization device, entering a preset sterilization mode, determining a corresponding illumination intensity grade according to a distance interval where the distance is located, and controlling the sterilization device to sterilize according to the illumination intensity grade. According to the embodiment of the invention, the food materials are subjected to illumination sterilization by adopting the short-wave visible blue light, so that the food materials and materials in the refrigerator are not deteriorated under the premise of ensuring high-efficiency sterilization, no biological hazard is caused to human bodies, and the cost is low.
It should be noted that the above-described system embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the system provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A refrigerator, characterized by comprising:
the refrigerator comprises a refrigerator body, a door body and a door body, wherein the refrigerator body is used as a supporting structure of the refrigerator and is internally provided with a plurality of compartments;
the refrigerating system is arranged in the box body and comprises a compressor, an evaporator and a fan, the compressor is used for providing power for the refrigerating cycle of the refrigerator, and the fan is used for enabling air to enter the evaporator of the refrigerator for heat exchange and sending the air after heat release to the compartment of the refrigerator;
the sterilizing device is arranged on a drawer cover plate of the compartment and is electrically connected with the controller, the sterilizing device comprises a light source and a distance meter, the light source can directly irradiate the surface of the food material in the compartment, and the distance meter is used for detecting the distance between the food material in the compartment and the sterilizing device in real time;
the controller is configured to start the sterilization device after the state of the refrigerator door body and the state of the compartment drawer meet a preset sterilization starting condition, enter a preset sterilization mode, determine a corresponding illumination intensity grade according to a distance interval where the distance is located, and control the sterilization device to sterilize according to the illumination intensity grade.
2. The refrigerator according to claim 1, wherein the refrigerator door and the compartment drawer are both provided with a magnetic attraction sensing device, and the sterilization device is opened after the state of the refrigerator door and the state of the compartment drawer meet a preset sterilization starting condition, specifically comprising:
detecting the state of the refrigerator door body and the state of the compartment drawer in real time through the magnetic induction device;
when the refrigerator door body is opened and the compartment drawer is closed, the sterilizing device is opened for a preset time and then closed;
when the refrigerator door body is opened and the compartment drawer is opened, the sterilizing device is closed;
and when the refrigerator door body is closed and the compartment drawer is closed, the sterilizing device is opened.
3. The refrigerator of claim 2, wherein the preset sterilization mode includes a normal sterilization mode and a power sterilization mode; when the sterilization device is in the conventional sterilization mode, controlling the light source to enter a cyclic irradiation mode, and continuously operating the sterilization device; and when the sterilizing device is in the powerful sterilizing mode, controlling the light source to enter a normally open irradiation mode, stopping the sterilizing device after running for a preset time, and entering the conventional sterilizing mode after stopping.
4. The refrigerator of claim 3, wherein before determining the corresponding light intensity level according to the distance interval in which the distance is located, further comprising:
according to the distance, the distance is determined by the formula E = ah 4 -bh 3 +ch 2 + dh + e, calculating to obtain corresponding illumination intensity; wherein E is the illumination intensity, h is the distance between the food material in the compartment and the sterilizing device, and a, b, c, d and E are constants;
and setting a preset distance interval and an illumination intensity grade corresponding to the distance interval according to the distance and the illumination intensity obtained by calculation.
5. The refrigerator as claimed in claim 2, wherein a reflective film is formed on an inner surface of the compartment drawer, and light emitted from the light source is irradiated on the reflective film to reflect light and refract light so that the light uniformly covers the inside of the compartment drawer.
6. The refrigerator of claim 5, wherein the light source comprises a plurality of blue LED beads connected in parallel, and the controller is further configured to:
and respectively adjusting the illumination intensity of the blue light LED lamp beads in the corresponding illumination areas according to the distance between the food materials in the different illumination areas and the sterilization device.
7. The sterilization control method of the refrigerator is applied to the refrigerator comprising a refrigerator body, a refrigerating system and a sterilization device, wherein a plurality of compartments are arranged inside the refrigerator body, the refrigerating system comprises a compressor, an evaporator and a fan, the sterilization device is installed on a drawer cover plate of each compartment, the sterilization device comprises a light source and a distance meter, the light source can directly irradiate the surface of food materials in the compartments, the distance meter is used for detecting the distance between the food materials in the compartments and the sterilization device in real time, and the sterilization control method comprises the following steps:
when the state of the refrigerator door body and the state of the compartment drawer meet preset sterilization starting conditions, starting the sterilization device and entering a preset sterilization mode;
and determining a corresponding illumination intensity grade according to the distance interval where the distance is located, and controlling the sterilization device to sterilize according to the illumination intensity grade.
8. The sterilization control method of the refrigerator according to claim 7, wherein the refrigerator door and the compartment drawer are both provided with a magnetic attraction sensing device, and the sterilization device is opened after the state of the refrigerator door and the state of the compartment drawer meet a preset sterilization starting condition, specifically comprising:
detecting the state of the refrigerator door body and the state of the compartment drawer in real time through the magnetic induction device;
when the refrigerator door body is opened and the compartment drawer is closed, the sterilizing device is opened for a preset time and then closed;
when the refrigerator door body is opened and the compartment drawer is opened, the sterilizing device is closed;
and when the refrigerator door body is closed and the compartment drawer is closed, the sterilizing device is opened.
9. The sterilization control method of a refrigerator as claimed in claim 8, wherein the preset sterilization mode includes a normal sterilization mode and a power sterilization mode; when the sterilization device is in the conventional sterilization mode, controlling the light source to enter a cyclic irradiation mode, and continuously operating the sterilization device; and when the sterilizing device is in the powerful sterilizing mode, controlling the light source to enter a normally open irradiation mode, stopping the sterilizing device after running for a preset time, and entering the conventional sterilizing mode after stopping.
10. The sterilization control method of a refrigerator according to claim 9, wherein before determining the corresponding light intensity level according to the distance zone where the distance is located, further comprising:
according to the distance, the distance is determined by the formula E = ah 4 -bh 3 +ch 2 + dh + e, calculating to obtain corresponding illumination intensity; wherein E is the illumination intensity, h is the distance between the food materials in the chamber and the sterilization device, and a, b, c, d and E are constants;
and setting a preset distance interval and an illumination intensity grade corresponding to the distance interval according to the distance and the illumination intensity obtained by calculation.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087147.XA CN115435530A (en) | 2022-09-07 | 2022-09-07 | Refrigerator and sterilization control method thereof |
| PCT/CN2023/114302 WO2024051491A1 (en) | 2022-09-07 | 2023-08-22 | Refrigerator and sterilization control method thereof |
| PCT/CN2023/117454 WO2024051774A1 (en) | 2022-09-07 | 2023-09-07 | Refrigerator and sterilization control methods therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087147.XA CN115435530A (en) | 2022-09-07 | 2022-09-07 | Refrigerator and sterilization control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115435530A true CN115435530A (en) | 2022-12-06 |
Family
ID=84247987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211087147.XA Pending CN115435530A (en) | 2022-09-07 | 2022-09-07 | Refrigerator and sterilization control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115435530A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051774A1 (en) * | 2022-09-07 | 2024-03-14 | 海信冰箱有限公司 | Refrigerator and sterilization control methods therefor |
| WO2024051491A1 (en) * | 2022-09-07 | 2024-03-14 | 海信冰箱有限公司 | Refrigerator and sterilization control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105159159A (en) * | 2015-08-06 | 2015-12-16 | 广州市鸿利光电股份有限公司 | Mobile terminal with ultraviolet sterilization function and controlling method thereof |
| CN108413701A (en) * | 2018-03-05 | 2018-08-17 | 青岛海尔股份有限公司 | A kind of control method and refrigerator for refrigerator sterilization |
| CN110425802A (en) * | 2019-08-28 | 2019-11-08 | 长虹美菱股份有限公司 | A kind of refrigerator and control method with sterilizing function |
| CN111706961A (en) * | 2020-05-22 | 2020-09-25 | 珠海格力电器股份有限公司 | Control method of sterilization device, sterilization device and air conditioner |
| CN214199372U (en) * | 2020-11-30 | 2021-09-14 | 合肥华凌股份有限公司 | Drawer assembly and refrigerator |
| CN113577331A (en) * | 2021-07-20 | 2021-11-02 | 北京小米移动软件有限公司 | Sterilization device and method, electronic apparatus, and storage medium |
| CN114251893A (en) * | 2020-09-25 | 2022-03-29 | 青岛海尔电冰箱有限公司 | Air-cooled refrigerator and sterilization method thereof |
-
2022
- 2022-09-07 CN CN202211087147.XA patent/CN115435530A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105159159A (en) * | 2015-08-06 | 2015-12-16 | 广州市鸿利光电股份有限公司 | Mobile terminal with ultraviolet sterilization function and controlling method thereof |
| CN108413701A (en) * | 2018-03-05 | 2018-08-17 | 青岛海尔股份有限公司 | A kind of control method and refrigerator for refrigerator sterilization |
| CN110425802A (en) * | 2019-08-28 | 2019-11-08 | 长虹美菱股份有限公司 | A kind of refrigerator and control method with sterilizing function |
| CN111706961A (en) * | 2020-05-22 | 2020-09-25 | 珠海格力电器股份有限公司 | Control method of sterilization device, sterilization device and air conditioner |
| CN114251893A (en) * | 2020-09-25 | 2022-03-29 | 青岛海尔电冰箱有限公司 | Air-cooled refrigerator and sterilization method thereof |
| CN214199372U (en) * | 2020-11-30 | 2021-09-14 | 合肥华凌股份有限公司 | Drawer assembly and refrigerator |
| CN113577331A (en) * | 2021-07-20 | 2021-11-02 | 北京小米移动软件有限公司 | Sterilization device and method, electronic apparatus, and storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051774A1 (en) * | 2022-09-07 | 2024-03-14 | 海信冰箱有限公司 | Refrigerator and sterilization control methods therefor |
| WO2024051491A1 (en) * | 2022-09-07 | 2024-03-14 | 海信冰箱有限公司 | Refrigerator and sterilization control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115435530A (en) | Refrigerator and sterilization control method thereof | |
| TWI407067B (en) | Refrigerator | |
| KR100826083B1 (en) | Refrigerator | |
| WO2021238223A1 (en) | Refrigerator | |
| TW200848678A (en) | Refrigerator | |
| CN212253311U (en) | A kind of refrigerator | |
| CN207422754U (en) | A kind of multifunctional intellectual freezer | |
| CN209978478U (en) | Refrigeration equipment with flash sterilization device | |
| JP2002350039A (en) | Refrigerator | |
| KR100750256B1 (en) | Method for controlling refrigerator with disinfection function | |
| CN111623581A (en) | A kind of refrigerator | |
| CN116255776A (en) | Refrigerator and sterilization control method applied to refrigerator | |
| KR102057057B1 (en) | Sterilizer of refrigerator using uv lamp for generating ozone | |
| CN116105428A (en) | Refrigerator and sterilization control method thereof | |
| JP3706550B2 (en) | refrigerator | |
| JP2014029226A (en) | Refrigerator | |
| CN212457167U (en) | Sterilizing kitchen air conditioner | |
| WO2024051491A1 (en) | Refrigerator and sterilization control method thereof | |
| KR101789805B1 (en) | Refrigerator with ultra violet light emitting diode | |
| JP2004169964A (en) | Refrigerator | |
| WO2024051774A1 (en) | Refrigerator and sterilization control methods therefor | |
| JP2012078053A (en) | Refrigerator | |
| CN111351278A (en) | Take freezer of deodorization function | |
| JP2014025642A (en) | Refrigerator | |
| CN108939124A (en) | Ultraviolet air sterilization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |