CN118111166A

CN118111166A - Refrigerator and sterilization and deodorization control method thereof

Info

Publication number: CN118111166A
Application number: CN202211527245.0A
Authority: CN
Inventors: 尹利昂; 王睿龙; 陈童; 刘浩泉
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2024-05-31

Abstract

The invention provides a refrigerator and a sterilization and deodorization control method thereof, wherein the sterilization and deodorization control method comprises the following steps: when a starting signal triggering the sterilization and deodorization device is obtained, the sterilization and deodorization device is operated according to a preset sterilization time length; detecting an odor concentration value of indoor odor gas in the storage room at a preset moment within a preset sterilization time period, and judging whether the shutdown condition of the sterilization and deodorization device is met or not according to the odor concentration value; resetting the preset sterilization time period according to a reset rule under the condition that the shutdown condition is not met so as to prolong the preset sterilization time period; and operating the sterilizing and deodorizing device according to the reset preset sterilizing time. The sterilization and deodorization control method can adjust the preset sterilization time length of the sterilization and deodorization device according to the actual condition of the peculiar smell gas in the storage compartment so as to ensure that the sterilization and deodorization device achieves the air quality standard of the storage compartment in one-time operation process, and reduces energy loss caused by frequent heavy startup.

Description

Refrigerator and sterilization and deodorization control method thereof

Technical Field

The invention relates to a sterilization and deodorization technology of a refrigerator, in particular to a refrigerator and a sterilization and deodorization control method thereof.

Background

Along with the increasing development of society and the continuous improvement of living standard of people, the living rhythm of people is faster and faster, so that people are willing to buy a lot of foods in the refrigerator, and the refrigerator becomes one of the household appliances indispensable in daily life of people.

However, the following problems often occur after a large amount of food is stored in a refrigerator: the user may forget that some foods are stored in the refrigerator, and the foods are out of date, so that the wastes are caused. The food which is out of date and deteriorated in the storage space can emit rotten and unpleasant smell to influence the air environment of the whole storage space. The air environment with poor storage space can also cause other non-spoiled foods to be affected. More importantly, rotten and spoiled foods can grow a large amount of bacteria, so that the food safety of users cannot be guaranteed. The bad smell of the storage space seriously affects the use experience of the user after the refrigerator door body is opened.

Disclosure of Invention

The invention aims to overcome at least one defect in the prior art, provides a refrigerator with a sterilizing and deodorizing device, aims to release ion wind into a storage compartment to realize sterilizing and deodorizing, and provides a sterilizing and deodorizing control method aiming at the refrigerator, wherein the sterilizing and deodorizing control method can adjust the preset sterilizing time length of the sterilizing and deodorizing device according to the actual condition of peculiar smell gas in the storage compartment so as to ensure that the sterilizing and deodorizing device can realize the air quality standard reaching of the storage compartment in one operation process, and reduce energy loss caused by frequent heavy start.

A further object of the present invention is to determine whether to adjust a preset sterilization time period of the sterilization and deodorization device according to the odor release condition of the storage compartment.

In particular, the invention provides a sterilization and deodorization control method of a refrigerator, the refrigerator comprises a refrigerator body and a sterilization and deodorization device, the refrigerator body is provided with a storage compartment, and the sterilization and deodorization device is configured to sterilize and deodorize the storage compartment; the sterilization and deodorization control method comprises the following steps: when a starting signal triggering the sterilization and deodorization device is obtained, the sterilization and deodorization device is operated according to a preset sterilization time length; detecting an odor concentration value of indoor odor gas in the storage room at a preset moment within a preset sterilization time period, and judging whether the shutdown condition of the sterilization and deodorization device is met or not according to the odor concentration value; resetting the preset sterilization time period according to a reset rule under the condition that the shutdown condition is not met so as to prolong the preset sterilization time period; and operating the sterilizing and deodorizing device according to the reset preset sterilizing time.

Optionally, the step of detecting the concentration value of the peculiar smell gas in the storage compartment and judging whether the shutdown condition of the sterilization and deodorization device is met according to the concentration value of the peculiar smell gas further comprises: detecting the peculiar smell gas in the storage compartment to obtain a first peculiar smell concentration value of one or more peculiar smell gases; acquiring the corresponding relation between the peculiar smell concentration value and the peculiar smell index of each peculiar smell gas; calculating a first peculiar smell index according to the first peculiar smell concentration value and the corresponding relation; and when the first peculiar smell index of the at least one peculiar smell gas is larger than the peculiar smell index threshold value, judging that the shutdown condition is not met.

Optionally, the step of resetting the preset sterilization duration according to the reset rule further includes: calculating an arithmetic mean of all first odor indices greater than the odor index threshold; resetting the preset sterilization time period according to the arithmetic mean.

Optionally, the step of resetting the preset sterilization period according to the arithmetic mean further comprises: when the difference between the arithmetic mean and the peculiar smell index threshold is larger than a preset threshold, resetting the preset sterilization time length to be a first preset multiple of the original preset sterilization time length, wherein the first preset multiple is larger than or equal to 2; when the difference between the arithmetic mean and the peculiar smell index threshold is smaller than the preset threshold, resetting the preset sterilization time length to a second preset multiple of the original preset sterilization time length, wherein the second preset multiple is larger than 1 and smaller than 2.

Optionally, the step of resetting the preset sterilization duration according to the reset rule further includes: resetting the preset sterilization time length to a third preset multiple of the original preset sterilization time length, wherein the third preset multiple is more than or equal to 1.

Optionally, the step of operating the sterilization and deodorization device according to the reset preset sterilization time period further includes: detecting the peculiar smell gas in the storage compartment according to the first preset interval time length to obtain a second peculiar smell concentration value of one or more peculiar smell gases; acquiring the corresponding relation between the peculiar smell concentration value and the peculiar smell index of each peculiar smell gas; calculating a second odor index according to the second odor concentration value and the corresponding relation; and when the second peculiar smell indexes of all the peculiar smell gases are smaller than the peculiar smell index threshold value, the sterilizing and deodorizing device is stopped.

Optionally, a time period between the preset time and an end time of the current preset sterilization time period is configured to be not longer than 5 seconds.

Optionally, the start signal includes one or more of a door closing signal of the refrigerator, a manual start signal from a user, and a start signal reaching a second preset interval period after a last shutdown.

In particular, the present invention also provides a refrigerator including: the box body is provided with a storage compartment; a sterilizing and deodorizing device configured to generate an ion wind released to the storage compartment; the controller comprises a memory and a processor, wherein the memory stores a machine executable program which when executed by the processor realizes the sterilization and deodorization control method according to any one of the above.

Optionally, the refrigerator further includes: the odor detection device is arranged in the storage compartment and is configured to detect the odor concentration value of one or more odor gases.

According to the sterilization and deodorization control method, when the starting signal of the sterilization and deodorization device is obtained, the sterilization and deodorization device is operated according to the preset sterilization time, whether the shutdown condition is met or not is judged according to the peculiar smell concentration value of the peculiar smell gas in the storage room at the preset time near the end of the preset sterilization time, and the sterilization and deodorization device is operated according to the reset preset sterilization time under the condition that the shutdown condition is not met, so that the preset sterilization time of the sterilization and deodorization device can be adjusted according to the actual condition of the peculiar smell gas in the storage room, the air quality of the storage room is up to standard in the one-time operation process of the sterilization and deodorization device is ensured, and the energy loss caused by frequent heavy startup is reduced.

Further, according to the sterilization and deodorization control method, as the types of the peculiar smell gases emitted after the spoilage of different food materials are greatly different, the peculiar smell indexes are introduced in judging whether the preset sterilization time length of the sterilization and deodorization device is required to be adjusted, the peculiar smell indexes can represent the odor influence of the peculiar smell gases of a certain type on the storage compartment actually according to the odor contribution capability of the peculiar smell gases under the peculiar smell concentration value, and whether the preset sterilization time length of the sterilization and deodorization device is required to be adjusted is judged according to the peculiar smell indexes, so that the time for adjusting the preset sterilization time length of the sterilization and deodorization device is closer to the actual situation.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a schematic view of a refrigerator according to an embodiment of the present invention;

Fig. 2 is a sectional view of a refrigerator according to an embodiment of the present invention;

Fig. 3 is a schematic view of a sterilizing and deodorizing device in a refrigerator according to one embodiment of the present invention;

fig. 4 is a sectional view of a sterilizing and deodorizing device in a refrigerator according to one embodiment of the present invention;

fig. 5 is a schematic view of a sterilizing and deodorizing device in a refrigerator according to an embodiment of the present invention

Fig. 6 is an exploded view of a sterilizing and deodorizing device in a refrigerator according to another embodiment of the present invention, with a housing removed;

fig. 7 is a schematic view of a control principle of a refrigerator according to an embodiment of the present invention;

fig. 8 is a flowchart of a sterilization and deodorization control method of a refrigerator according to an embodiment of the present invention;

Fig. 9 is a flowchart of a sterilization and deodorization control method of a refrigerator according to another embodiment of the present invention.

Detailed Description

Referring to fig. 1 and 2, fig. 1 is a schematic view of a refrigerator 1 according to an embodiment of the present invention, and fig. 2 is a sectional view of the refrigerator 1 according to an embodiment of the present invention. The present invention provides a refrigerator 1, and the refrigerator 1 may generally include a cabinet 20 and a door 30.

The cabinet 20 may include an outer shell 28 and one or more inner liners 22, the outer shell 28 being located at the outermost side of the overall refrigerator 1 to protect the overall refrigerator 1. The space between the liner 22 and the outer shell 28 is filled with a thermal insulation material (forming a foam layer 26) to reduce the heat dissipation of the liner 22. Each liner 22 may define one or more storage compartments 24, and the storage compartments 24 may be configured as a refrigerator compartment, freezer compartment, temperature change compartment, or the like. For example, as shown in fig. 1 to 3, the number of the liners 22 may be two, and the storage compartments 24 of the two liners 22 may be configured as a refrigerating compartment and a freezing compartment, respectively. Of course, those skilled in the art will recognize that the number, function and arrangement of the specific storage compartments 24 may be configured according to the requirement in advance, which will not be described herein.

The door body 30 may be disposed at the front of the box body 20 for opening and closing the storage compartments 24, the door body 30 may be disposed at one side of the box body 20 in a hinged manner, and the storage compartments 24 may be opened and closed in a pivoting manner, and the number of the door bodies 30 may be matched with the number of the storage compartments 24, so that the storage compartments 24 may be opened individually one by one.

Referring to fig. 2, further, the refrigerator 1 may further include a refrigeration system operable to provide cooling to each storage compartment 24. Specifically, the refrigeration system may include a compressor 60, a condenser (not shown), and an evaporator 70 connected in series in a refrigerant circuit.

The compressor 60 is used as a power of the refrigerating system, a compressor compartment is provided at the bottom of the rear side of the case 20, and the compressor 60 may be provided in the compressor compartment. The compressor 60 increases the pressure and temperature of the refrigerant vapor by compression, creating a condition for transferring heat of the refrigerant vapor to an external environment medium, i.e., compressing the low-temperature low-pressure refrigerant vapor to a high-temperature high-pressure state so that the refrigerant vapor can be condensed using normal-temperature air or water as a cooling medium.

The condenser may also be disposed in the compressor compartment, and is a heat exchange device that uses the environment to remove heat from the high-temperature and high-pressure refrigerant vapor from the compressor 60, thereby cooling and condensing the high-temperature and high-pressure refrigerant vapor into a refrigerant liquid at a high pressure and a normal temperature.

An evaporator 70 may be provided in the cabinet 20 to supply cold to the storage compartment 24 of the refrigerator 1. The case 20 may be provided therein with an evaporator chamber 29, the evaporator chamber 29 being in communication with each storage compartment 24 through a wind path system, and an evaporator 70 being provided in the evaporator chamber 29.

It should be noted that the above is only one arrangement mode of each component of the refrigeration system in the refrigerator 1 of the present embodiment, and those skilled in the art may obtain other arrangement modes in the prior art, for example, the compressor 60 and the condenser are arranged on the top of the box 20, which is not described herein.

Referring to fig. 2, further, the refrigerator 1 may further include a sterilizing and deodorizing device 10. The sterilization and deodorization device 10 can be arranged in the storage compartment 24, and can release ion wind for sterilization and deodorization to the storage compartment 24, so that bacteria and peculiar smell are effectively eliminated, the food safety of a user is ensured, and the use experience of the user is effectively improved.

Referring to fig. 3 to 5, fig. 3 is a schematic view of a sterilizing and deodorizing device 10 in a refrigerator 1 according to one embodiment of the present invention, fig. 4 is a sectional view of the sterilizing and deodorizing device 10 in the refrigerator 1 according to one embodiment of the present invention, and fig. 5 is a schematic view of the sterilizing and deodorizing device 10 in the refrigerator 1 according to one embodiment of the present invention. Specifically, the sterilization and deodorization device 10 may further include a housing 100, an electrode assembly 200, a catalytic coating (not shown), and a heating device 300.

The housing 100 defines a cavity therein, and the housing 100 further has a plurality of air inlets 124c and a plurality of air outlets 112a communicating the cavity with the storage compartment 24. Air from the storage compartment 24 may enter the cavity through the plurality of air inlets 124c and be re-exhausted into the storage compartment 24 through the plurality of air outlets 112a.

The electrode set 200 is disposed in the cavity, and may include at least one excitation electrode 210 and one receiving electrode 220, where the receiving electrode 220 is located on a side close to the exhaust ports 112a, and the excitation electrode 210 is located on a side of the receiving electrode 220 away from the exhaust ports 112a at intervals.

The sterilization and deodorization apparatus 10 may further include a control circuit (not shown) that generates a potential difference between the excitation electrode 210 and the receiving electrode 220, and generates ion wind that promotes collisions with air molecules entering the cavity and is discharged from the plurality of air outlets by using the potential difference.

The corona discharge may be classified into a positive polarity and a negative polarity according to the polarity of the power supply voltage used. The direction of the ion wind is directed from the high voltage electrode to the low electrode, whether positive or negative. The excitation electrode 210 in this embodiment may be a high voltage electrode and the receiving electrode 220 may be a low electrode. That is, the ion wind is blown toward the receiving electrode 220 by the excitation electrode 210.

Referring to fig. 5, the arrow direction in fig. 5 refers to the flow direction of air, circles represent electrons, squares represent suspended organisms, triangles represent odor molecules, and ellipses represent air molecules. The following describes a specific process of implementing the sterilization and deodorization function of the sterilization and deodorization device 10: air in the storage compartment 24 can enter the cavity through the plurality of air inlets 124c, the tips of the excitation electrodes 210 ionize to generate high-energy electrons, and the electrons directionally move under the action of an electric field and collide with air molecules, so that the air molecules move to generate ion wind blowing to one side of the receiving electrode 220. The electrons break up the odor molecules while moving directionally, exciting oxygen to generate ozone, and the high voltage ionization of the exciting electrode 210 breaks down the cells of the suspended organisms for sterilization.

In addition, since the ionized electrons move directionally in the electric field at a high speed, the electrons can transfer their own momentum to gas molecules in the air to form mild (low wind speed) ion wind, so that sterilization and deodorization of the storage compartment 24 are realized, and the sterilization and deodorization device 10 does not need to be provided with an additional mechanical fan to promote ion wind diffusion.

The receiving electrode 220 may also have a mesh shape (not shown) so as to allow the air after sterilization and deodorization to pass therethrough, thereby facilitating the discharge from the air outlet 112 a. Since oxygen in the air may be oxidized to ozone during the discharge, a large amount of ozone may cause discomfort to the user, a catalytic coating (not shown) may be further provided on (or near) the receiving electrode 220. The catalytic coating has catalytic activity, and contacts the catalytic coating after the ion wind passes through the receiving electrode 220, and a large amount of ozone and a small amount of odor molecules are eliminated by catalytic reaction under the catalysis of the catalytic coating, so that ozone poisoning caused by excessive ozone discharged into the external environment is prevented.

Further, the catalytic coating may be disposed in the airflow path of the ion wind to the exhaust outlet 112a, and may decompose at least a portion of the ozone generated with the ion wind before the ion wind exits the exhaust outlet 112a, thereby controlling the ozone content into the storage compartment 24, avoiding excessive sterilization of the external environment, and reducing the risk of "ozone poisoning" for the user.

For example, in some specific embodiments, the catalytic coating is applied directly to the surface of the receiving electrode 220 and/or the inner wall of the mesh. Since the ion wind is formed in the electric field between the excitation electrode 210 and the receiving electrode 220, the excitation electrode 210 is located near the exhaust port 112a, and the catalytic coating is coated on the inner wall of the receiving electrode 220 or the mesh, the catalytic coating is located on the air flow path of the ion wind to the exhaust port 112a, and can decompose ozone in the ion wind.

Referring to fig. 6, fig. 6 is an exploded view of the sterilizing and deodorizing device 10 in the refrigerator 1 according to another embodiment of the present invention, with the housing 100 hidden. For example, in other embodiments, a catalytic module 90 may be disposed between the receiving electrode 220 and the exhaust port 112a for providing a catalytic coating, which also breaks down ozone in the ion wind.

Further, since the catalytic coating needs to be heated to a certain working temperature range to promote (recover) its catalytic activity, the catalytic coating needs to be heated by the heating device 300 to recover its catalytic activity and improve its catalytic efficiency when decomposing ozone.

The heating device 300 may be in an electric heating form, and the specific arrangement form of the heating device 300 may be determined according to the arrangement position and arrangement form of the catalytic coating.

Referring to fig. 4, for example, in an embodiment in which the catalytic coating is directly applied to the receiving electrode 220, the heating device 300 may be a bracket 400 for supporting, fixing the receiving electrode 220. The support 400 may be made of an alloy with a relatively high resistivity (such as iron-chromium-aluminum alloy, nickel-chromium alloy, etc.), and the support 400 is heated after being separately electrified, so that the heat generated on the support 400 can be transferred to the catalytic coating thereon through the receiving electrode 220, and the catalytic coating recovers the catalytic activity.

Referring to fig. 6, for another example, in embodiments in which a catalytic coating is disposed on the catalytic module 90, the heating device 300 may be the catalytic module 90. The catalytic module 90 is made of ceramic or metal material, and in use, the catalytic module 90 can be energized to generate heat, which is transferred to the catalytic coating thereon through the catalytic module 90, so that the catalytic coating recovers catalytic activity.

It should be noted that the foregoing examples are only for clearly understanding the technical solution of the present invention and are not intended to limit the scope of the present invention. The location of the catalytic coating, and the form of the heating device 300, such as a lamplight heating lamp, are not shown here, can be flexibly set by those skilled in the art, knowing the technical solution of the present invention.

Referring to fig. 4 and 6, in some embodiments, the sterilizing and deodorizing device 10 may further include an ultraviolet lamp 80, the ultraviolet lamp 80 being disposed within the cavity and configured to emit ultraviolet light upon activation to irradiate the ultraviolet light of the catalytic coating to eliminate ozone passing through the catalytic coating.

The ultraviolet lamp 80 may be combined with a catalytic coating to decompose ozone. The catalytic coating is capable of eliminating a large amount of ozone and a small amount of odor molecules in the ionic wind, but the ionic wind also contains a small amount of ozone. This portion of ozone can be thoroughly decomposed and completely eliminated by the provision of the ultraviolet lamp 80.

In a preferred embodiment, the ultraviolet light emitted by the ultraviolet lamp 80 is 253.6nm and the ozone is thoroughly decomposed by 253.6nm ultraviolet light. Ultraviolet light of 253.6nm irradiates on the catalytic coating, can generate photoelectric effect, convert light energy into chemical energy, excite surrounding water molecules and oxygen molecules to ionize, and can effectively decompose organic matters and pollutants after being blown into the external environment.

Referring to fig. 6, in an embodiment in which a catalytic coating is disposed on the catalytic module 90, the ultraviolet lamp 80 may also be disposed on a side of the catalytic module 90 facing away from the receiving electrode 220 to directly irradiate the catalytic module 90.

Referring to fig. 7, fig. 7 is a schematic diagram of a control principle of a refrigerator 1 according to an embodiment of the present invention. Further, the refrigerator 1 may further include a controller 500, and the controller 500 may include a processor 510 and a memory 520, wherein the memory 520 stores a machine executable program 522, and the machine executable program 522 implements a sterilization and deodorization control method when executed by the processor 510. The sterilization and deodorization control method can control the preset sterilization time length of the sterilization and deodorization device 10 according to the actual condition of the peculiar smell gas in the storage compartment 24, is more fit with the actual condition, and flexibly adjusts the shutdown time of the sterilization and deodorization device 10 so as to ensure that the sterilization and deodorization device 10 achieves the air quality standard of the storage compartment 24 in one operation process, and reduces the energy loss caused by frequent heavy startup.

Referring to fig. 8, fig. 8 is a flowchart of a sterilization and deodorization control method of the refrigerator 1 according to one embodiment of the present invention. In some embodiments, the sterilization and deodorization control method can be realized by the following steps:

Step S810, when a start signal triggering the sterilization and deodorization device 10 is obtained, the sterilization and deodorization device 10 is operated according to a preset sterilization duration.

Step S820, detecting the odor concentration value of the odor gas in the storage compartment 24 at a preset time within a preset sterilization time period, and judging whether the shutdown condition of the sterilization and deodorization device 10 is satisfied according to the odor concentration value.

Step S830, resetting the preset sterilization duration according to the reset rule to extend the preset sterilization duration when the shutdown condition is not satisfied.

Step S840, operating the sterilization and deodorization device 10 according to the reset preset sterilization time period.

In step S810, the start signal may be one or more of a door closing signal, a manual start signal from a user, and a start signal for reaching a second preset interval period after the last shutdown. When any one of the above start signals is obtained, the sterilization and deodorization device 10 is controlled to start. The sterilization and deodorization device 10 is powered on to generate ion wind for sterilization and deodorization, and under the action of the ion wind, each of the different smell gases can be gradually decomposed to improve the air quality of the storage compartment 24.

In step S820, the odor concentration value of the odor gas in the storage compartment 24 may be detected by the odor detecting device 40. Disposed within the storage compartment 24 is an odor detection device 40, which may include one or more odor sensors. When the odor detecting device 40 is one odor sensor, the odor sensor can simultaneously recognize a plurality of odor gases and detect a concentration value of each odor gas. When the odor detecting device 40 is a plurality of odor sensors, each of the odor sensors may be configured to recognize a predetermined kind of odor gas and detect a concentration value of the odor gas.

The preset time period may be set short (e.g., 1 second, 2 seconds, etc.). In some specific embodiments, the duration between the preset time and the end time of the current preset sterilization duration is configured to be no longer than 5 seconds (e.g., 5 seconds, 2 seconds, etc.). The first setting is to make the detected odor concentration value at the preset time more approximate to the odor concentration value of the storage compartment 24 when the preset sterilization time is finished, and the second setting is that the electrode group 200 is not cut off power supply at the preset time, if the sterilization and deodorization device 10 needs to be continuously operated, the restarting of the electrode group 200 after the power failure is not needed, and the energy loss caused by the restarting is reduced.

In step S820, if the shutdown condition is satisfied, the sterilization and deodorization device 10 is controlled to be shutdown after a preset sterilization period.

In step S830, in the case where the shutdown condition is not satisfied, the preset sterilization period is reset according to the reset rule. For example, the original preset sterilization time period is 30 minutes, and the preset sterilization time period is reset to 40 minutes under the condition that the shutdown condition is not met, so that the working time period of the sterilization and deodorization device 10 is prolonged, and the sterilization and deodorization device 10 achieves that the air quality of the storage compartment 24 reaches the standard in one operation process.

In step S840, when the sterilization and deodorization device 10 is operated according to the reset preset sterilization time period, the starting time of the sterilization and deodorization device 10 is not changed. For example, 12:00 starts the sterilization and deodorization device 10, the preset sterilization time period is 30 minutes, and when the shutdown condition is not met, the preset sterilization time period is reset to 40 minutes, and the planned shutdown time after the reset is 12:40.

According to the sterilization and deodorization control method of the embodiment, when the starting signal of the sterilization and deodorization device 10 is obtained, the sterilization and deodorization device 10 is operated according to the preset sterilization time length, whether the shutdown condition is met or not is judged according to the peculiar smell concentration value of the peculiar smell gas in the storage compartment 24 at the preset time point near the end of the preset sterilization time length, and the sterilization and deodorization device 10 is operated according to the reset preset sterilization time length under the condition that the shutdown condition is not met, so that the preset sterilization time length of the sterilization and deodorization device 10 can be adjusted according to the actual condition of the peculiar smell gas in the storage compartment 24, the actual condition is more met, the shutdown time of the sterilization and deodorization device 10 is flexibly adjusted, and the air quality of the storage compartment 24 is ensured to reach the standard in the one-time operation process of the sterilization and deodorization device 10, and the energy loss caused by frequent heavy startup is reduced.

In some embodiments, the step of detecting the concentration value of the odorous gas in the storage compartment 24 and determining whether the shutdown condition of the sterilization and deodorization apparatus 10 is satisfied according to the concentration value of the odorous gas further comprises: the odor gas of the storage compartment 24 is detected to obtain a first odor concentration value of the one or more odor gases. And obtaining the corresponding relation between the peculiar smell concentration value of each peculiar smell gas and the peculiar smell index. And calculating a first peculiar smell index according to the corresponding relation between the first peculiar smell concentration value and the corresponding relation. And when the first peculiar smell index of the at least one peculiar smell gas is larger than the peculiar smell index threshold value, judging that the shutdown condition is not met.

Generally, since the storage environment of the storage compartment 24 of the refrigerator is complex, some food materials will emit peculiar smell gas (such as durian and garlic), some food materials will emit peculiar smell gas after being rotten, and the types of peculiar smell gas emitted after the different food materials are rotten have great difference, so that the storage compartment 24 has more peculiar smell gas types, and the degree of the peculiar smell contributed by each peculiar smell gas is different in unit concentration due to different physical and chemical properties of each peculiar smell gas.

For example, pork affects the changes of amines and alkanes in refrigerators and is a main source of amine odor substances; the increase of benzene series in rice is a main reason for influencing the increase of benzene series; the tofu affects the change of oxygen-containing compounds, releases high-content amine substances in the spoilage period, and is a main source of oxygen-containing and amine peculiar smell components; the change of dimethyl disulfide, alcohols and amines is influenced by green vegetables, and the change is a main contributor to refrigerator peculiar smell; watermelon is a main source for increasing styrene in the refrigerator, and influences the content change of alcohols, amines and the like in the refrigerator. In the above-described example odorous gas, the odor contribution per unit concentration of dimethyl disulfide is stronger than that of amines, i.e., a smaller concentration of dimethyl disulfide may make the storage compartment 24 more odorous, while amines have a significant effect on the storage compartment 24 when the concentration is accumulated to a greater extent.

In this embodiment, the odor detecting device 40 is capable of recognizing different odor gases and detecting a first odor concentration of each of the odor gases. And then determining a first odor index according to the corresponding relation between the odor concentration value of each odor and the odor index. The odor index may characterize the odor effect of a certain class of odorous gases at the odor concentration value, in fact, on the storage compartment 24 in terms of their odor-contributing capacity.

When the first odor index of the at least one odorous gas is greater than the odor index threshold, the odor contributed by the odorous gas is considered to still affect the air quality of the storage compartment 24, so that it is determined that the shutdown condition is not satisfied, and the preset sterilization duration is required to be prolonged, and further sterilization and deodorization are required.

In some embodiments, the correspondence may be expressed as y=a×x+b, where Y is an odor index, a is a correction coefficient, X is an odor concentration value, and B is a constant. Wherein the correction factor A is configured to be positively correlated with the odor degree contributed by the odorous gas at the unit concentration.

That is, the greater the correction coefficient a for the odorous gas having a greater degree of odor contributed by a unit concentration, the smaller the correction coefficient a for the odorous gas having a smaller degree of odor contributed by a unit concentration, thus enabling the uniform measurement of the odor index.

In some specific embodiments, the odor index threshold value for each of the odorous gases is configured the same. That is, after the correction of the correspondence, the odor index of each odor gas is the same when the odor index reaches the critical value of the odor gas which needs sterilization and deodorization.

In some embodiments, the step of resetting the preset sterilization period according to the reset rule further comprises: an arithmetic mean of all first odor indices greater than the odor index threshold is calculated. Resetting the preset sterilization time period according to the arithmetic mean.

When the first peculiar smell index of at least one peculiar smell gas is larger than the peculiar smell index threshold value, judging that the shutdown condition is not met, and resetting the preset sterilization time according to the reset rule under the condition that the shutdown condition is not met.

Further, when the preset sterilization period is reset, the arithmetic average of all the first odor indexes larger than the threshold value of the odor indexes is calculated, and when the arithmetic average is larger, the odor of the storage compartment 24 is considered to be still larger, and the preset sterilization period needs to be prolonged to a larger extent. When the arithmetic mean is small, it is considered that although the air quality of the storage compartment 24 has not reached the standard, it has tended to reach the standard, and the shutdown condition can be satisfied only by extending the preset sterilization period to a small extent.

Further, when the difference between the arithmetic mean and the odor index threshold is greater than the preset threshold, resetting the preset sterilization duration to a first preset multiple of the original preset sterilization duration, wherein the first preset multiple is greater than or equal to 2, such as 2, 2.5, 3, and the like. When the difference between the arithmetic mean and the odor index threshold is smaller than the preset threshold, resetting the preset sterilization time period to a second preset multiple of the original preset sterilization time period, wherein the second preset multiple is larger than 1 and smaller than 2, such as 1.1, 1.5 and the like.

For example, when the original preset sterilization period is 30 minutes, and when the difference between the arithmetic average and the odor index threshold is greater than the preset threshold, the preset sterilization period is reset to 2 times the original preset sterilization period, and the preset sterilization period is reset to 60 minutes. For another example, when the original preset sterilization duration is 30 minutes, and when the difference between the arithmetic average and the odor index threshold is smaller than the preset threshold, the preset sterilization duration is reset to 1.5 times of the original preset sterilization duration, and the preset sterilization duration is reset to 45 minutes.

In some embodiments, the step of resetting the preset sterilization period according to the reset rule further comprises: resetting the preset sterilization time length to a third preset multiple of the original preset sterilization time length, wherein the third preset multiple is more than or equal to 1.

That is, the resetting rule in the present embodiment does not depend on the calculated arithmetic mean, but directly resets, which reduces the accuracy of the resetting rule, but is simple and practical, and basically enables the sterilizing and deodorizing device 10 to bring the air quality to the standard during one operation.

In some embodiments, the step of operating the sterilization and deodorization device 10 according to the reset preset sterilization duration further comprises: the odor gas of the storage compartment 24 is detected at a first predetermined interval period to obtain a second odor concentration value of the one or more odor gases. And obtaining the corresponding relation between the peculiar smell concentration value of each peculiar smell gas and the peculiar smell index. And calculating a second peculiar smell index according to the corresponding relation between the second peculiar smell concentration value and the corresponding relation. When the second odor index of all the odor gases is less than the odor index threshold, the sterilizing and deodorizing device 10 is deactivated.

When the sterilizing and deodorizing device 10 is operated according to the preset sterilizing time period after the reset, it is possible to satisfy the shutdown condition in advance. Therefore, in the process of operating the sterilization and deodorization device 10 according to the reset preset sterilization time period, the odor in the storage compartment 24 is detected at the first preset interval time period, the second odor concentration value is obtained, the second odor index is calculated, whether the second odor index meets the shutdown condition is judged, and if the second odor index meets the shutdown condition, the sterilization and deodorization device 10 is stopped in time.

Referring to fig. 9, fig. 9 is a flowchart of a sterilization and deodorization control method of the refrigerator 1 according to another embodiment of the present invention. In some embodiments, the sterilization and deodorization control method of the refrigerator 1 may further be performed according to the following steps:

step S901, when a door closing signal of the door body is obtained, the sterilization and deodorization device 10 is operated according to a preset sterilization duration.

Step S902, detecting the odor concentration value of the odor gas in the storage compartment 24 at a preset time to obtain a first odor concentration value of one or more odor gases.

Step 903, obtaining a corresponding relationship between the odor concentration value and the odor index of each odor.

Step S904, calculating a first odor index according to the first odor concentration value and the corresponding relation.

And step S905, judging whether the odor indexes of at least one odor are smaller than the odor index threshold value. If the determination result in step S905 is yes, the following steps are performed.

Step S906, resetting the preset sterilization time according to the reset rule to prolong the preset sterilization time.

Step S907, detecting the odor gas in the storage compartment 24 according to the first preset interval duration to obtain a second odor concentration value of one or more odor gases.

Step S908, calculating a second odor index according to the second odor concentration value and the corresponding relation.

Step S909, judging whether the second peculiar smell indexes of all peculiar smell gases are smaller than the peculiar smell index threshold value.

When the determination result of step S909 is yes, step S910 is executed, and when the determination result of step S909 is no, step S907 is executed in a loop.

Step S910, the sterilizing and deodorizing device 10 is stopped.

If the determination result in step S905 is no, step S910 is also directly performed.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A sterilization and deodorization control method of a refrigerator, the refrigerator comprising a refrigerator body and a sterilization and deodorization device, the refrigerator body having a storage compartment, the sterilization and deodorization device being configured to sterilize and deodorize the storage compartment;

the sterilization and deodorization control method comprises the following steps:

when a starting signal triggering the sterilization and deodorization device is obtained, the sterilization and deodorization device is operated according to a preset sterilization time length;

detecting the peculiar smell concentration value of the indoor peculiar smell gas in the storage room at a preset moment in the preset sterilization time period, and judging whether the shutdown condition of the sterilization and deodorization device is met or not according to the peculiar smell concentration value;

Resetting the preset sterilization duration according to a reset rule under the condition that the shutdown condition is not met so as to prolong the preset sterilization duration;

and operating the sterilization and deodorization device according to the reset preset sterilization time.

2. The sterilization and deodorization control method according to claim 1, wherein the step of detecting the concentration value of the peculiar smell gas in the storage compartment and judging whether the shutdown condition of the sterilization and deodorization device is satisfied according to the concentration value of the peculiar smell gas further comprises:

detecting the peculiar smell gas in the storage compartment to obtain a first peculiar smell concentration value of one or more peculiar smell gases;

acquiring the corresponding relation between the peculiar smell concentration value and the peculiar smell index of each peculiar smell gas;

calculating a first odor index according to the corresponding relation between the first odor concentration value and the first odor concentration value;

And when the first peculiar smell index of at least one peculiar smell gas is larger than a peculiar smell index threshold value, judging that the shutdown condition is not met.

3. The sterilization and deodorization control method according to claim 2, wherein the step of resetting the preset sterilization duration according to a reset rule further comprises:

Calculating an arithmetic mean of all first odor indices greater than the odor index threshold;

and resetting the preset sterilization time according to the arithmetic mean.

4. A sterilization and deodorization control method according to claim 3 wherein the step of resetting the preset sterilization duration according to the arithmetic mean further comprises:

When the difference between the arithmetic mean and the peculiar smell index threshold is larger than a preset threshold, resetting the preset sterilization time length to a first preset multiple of the original preset sterilization time length, wherein the first preset multiple is larger than or equal to 2;

And when the difference between the arithmetic mean and the peculiar smell index threshold is smaller than a preset threshold, resetting the preset sterilization time period to a second preset multiple of the original preset sterilization time period, wherein the second preset multiple is larger than 1 and smaller than 2.

5. The sterilization and deodorization control method according to claim 1, wherein the step of resetting the preset sterilization duration according to a reset rule further comprises:

Resetting the preset sterilization time length to a third preset multiple of the original preset sterilization time length, wherein the third preset multiple is more than or equal to 1.

6. The sterilization and deodorization control method according to claim 1, wherein the step of operating the sterilization and deodorization device according to the preset sterilization duration after the reset further comprises:

detecting the peculiar smell gas in the storage compartment according to a first preset interval time length to obtain a second peculiar smell concentration value of one or more peculiar smell gases;

Acquiring the corresponding relation between the peculiar smell concentration value of each peculiar smell gas and the peculiar smell index;

Calculating a second odor index according to the corresponding relation between the second odor concentration value and the second odor concentration value;

And when the second peculiar smell indexes of all peculiar smell gases are smaller than the peculiar smell index threshold value, the sterilizing and deodorizing device is stopped.

7. The sterilization and deodorization control method according to claim 1, wherein,

The duration between the preset time and the end time of the current preset sterilization duration is configured to be no longer than 5 seconds.

8. The sterilization and deodorization control method according to claim 1, wherein,

The starting signal comprises one or more of a door body closing signal of the refrigerator, a manual starting signal from a user and a starting signal reaching a second preset interval time after the last shutdown.

9. A refrigerator, comprising:

The box body is provided with a storage compartment;

A sterilizing and deodorizing device configured to generate an ion wind released to the storage compartment;

A controller comprising a memory and a processor, wherein the memory stores a machine executable program that when executed by the processor implements the sterilization and deodorization control method according to any one of claims 1 to 8.

10. The refrigerator of claim 9, further comprising:

The odor detection device is arranged in the storage compartment and is configured to detect the odor concentration value of one or more odor gases.