CN111380294B - Air-cooled refrigerator and sterilization control method thereof - Google Patents
Air-cooled refrigerator and sterilization control method thereof Download PDFInfo
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- CN111380294B CN111380294B CN201811628598.3A CN201811628598A CN111380294B CN 111380294 B CN111380294 B CN 111380294B CN 201811628598 A CN201811628598 A CN 201811628598A CN 111380294 B CN111380294 B CN 111380294B
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Images
Classifications
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- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
-
- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
-
- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
-
- 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
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides an air-cooled refrigerator and a sterilization control method thereof, wherein a sterilization device is arranged in the air-cooled refrigerator, the sterilization device is configured to have an excitation state and a preparation state for releasing sterilization ions, and the method further comprises the following steps: acquiring a starting signal of a refrigerating system of the air-cooled refrigerator; and after the stable operation of the refrigeration system is determined, controlling the sterilization device to work according to a set operation period, wherein each operation period comprises a stage that the sterilization device works in an excitation state and a stage that the sterilization device works in a preparation state. The scheme of the invention provides an alternately circulating operation period of an excitation state and a preparation state aiming at the characteristics of the sterilization device, so that the sterilization device can reliably work in a low-temperature and humidity closed application environment of a refrigerator.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to an air-cooled refrigerator and a sterilization control method thereof.
Background
The refrigerator is a common household appliance, and the freshness date of food is prolonged by refrigerating and freezing. In order to ensure the refrigerating and freezing effect, the refrigerator body is required to have good sealing performance.
However, if food is stored in this sealed environment for a long period of time, particularly for fresh vegetables placed in a cold storage compartment, the loss of water stimulates the release of ethylene from the vegetables and fruits, promoting the disintegration of chloroplasts, the deterioration of cell membranes of tissues, and the decrease in storage and disease resistance. On the other hand, under the temperature condition of the refrigerating chamber, some bacteria still can live and breed, thereby constituting a threat to the food in the refrigerating chamber and causing the food in the refrigerating chamber to decay and deteriorate.
Particularly for air-cooled refrigerators, the supply airflow may carry bacteria within the storage compartment and spread these bacteria throughout the refrigerator. Bacteria may multiply in places where the user cannot see the difficult to clean, such as wind tunnels. This seriously affects the safety of the storage environment of the refrigerator, resulting in a great increase in the rate of deterioration of the stored goods.
Although some sterilization devices for refrigerators appear in the prior art, the operation reliability of the sterilization device is poor due to the low-temperature and humid environment inside the refrigerator, and the use requirements of users cannot be met.
Disclosure of Invention
One object of the present invention is to provide a sterilization control method for an air-cooled refrigerator, which enables a sterilization apparatus to meet the requirement of reliable operation in a low-temperature and humid environment inside the refrigerator.
Another object of the present invention is to improve the reliability of the sterilization apparatus.
According to an aspect of the present invention, there is provided a sterilization control method for an air-cooled refrigerator, in which a sterilization apparatus is provided in the air-cooled refrigerator, the sterilization apparatus is configured to have an excitation state and a preparation state for releasing sterilization ions, and the method further includes: acquiring a starting signal of a refrigerating system of the air-cooled refrigerator; and after the stable operation of the refrigerating system is determined, controlling the sterilization device to work according to a set operation period, wherein each operation period comprises a stage that the sterilization device works in an excitation state and a stage that the sterilization device works in a preparation state.
Optionally, the step of obtaining an activation signal of a refrigeration system of the air-cooled refrigerator comprises: detecting the running state of a fan of a refrigeration system; and when the fan is started and the rotating speed reaches the set rotating speed range, determining that the refrigerating system stably operates.
Optionally, the process of controlling the operation of the sterilization apparatus according to the set operation cycle further includes: counting the number of cycles of the operating period; and after the cycle times reach the preset time threshold value, closing the sterilizing device until a starting signal is received next time.
Optionally, the process of controlling the operation of the sterilization apparatus according to the set operation cycle further includes: acquiring a closing signal of a refrigerating system of the air-cooled refrigerator; and closing the sterilizing device according to the closing signal until the starting signal is received next time.
Optionally, the sterilization device includes a voltage boost circuit and an ionizer, and in the excited state, the voltage boost circuit is controlled to convert the input power into a first voltage, so that the ionizer is excited by the first voltage to be ionized to release the sterilization ions.
Optionally, in a standby state, the boost circuit is controlled to convert the input power supply into a second voltage, so that the ionizer generates heat under the second voltage; or stopping the supply of the input power to the booster circuit to suspend the operation of the ionizer.
Optionally, the effective value of the first voltage ranges from 2000 to 5000V; the effective value of the second voltage ranges from 1000 to 1800V.
Optionally, the duration of the phase of the excitation state in each operation period is 500ms to 2 s; the duration of the phase of the readiness in each operating cycle is 20s to 200 s.
According to an aspect of the present invention, there is also provided an air-cooled refrigerator, including: the box body defines a storage chamber; the air supply duct is used for providing refrigerating airflow to the storage compartment; the sterilizing device is used for releasing sterilizing ions; the controller comprises a memory and a processor, wherein the memory stores a control program, and the control program is used for realizing any one of the sterilization control methods of the air-cooled refrigerator when being executed by the processor.
Optionally, the sterilization device comprises: the ion generator is arranged in the air supply duct and is excited by the first voltage to ionize so as to release sterilizing ions.
According to the air-cooled refrigerator and the sterilization control method thereof, the sterilization ions are released in an ionization excitation mode, a sterilization preparation does not need to be replaced, the air-cooled refrigerator can be reliably used for a long time, and the operation period of alternate circulation of the excitation state and the preparation state is provided aiming at the characteristics of the sterilization device, so that the sterilization device can reliably work in the low-temperature and humidity closed application environment of the refrigerator.
Furthermore, the air-cooled refrigerator and the sterilization control method thereof can ensure that the booster circuit can convert a second voltage lower than the excited first voltage in a preparation state, keep the ion exciter to generate heat and avoid condensation; the work of the booster circuit can be suspended, and the service life of the sterilization device can be prolonged.
Furthermore, the air-cooled refrigerator and the control method of the sterilization device thereof of the invention also improve the starting condition and the stopping condition of the sterilization device, so that the sterilization device can sterilize when in refrigeration starting, and the sterilization ions are transmitted by using the air flow to improve the sterilization effect.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic partial structural view of an air-cooled refrigerator according to one embodiment of the present invention;
fig. 2 is an electrical configuration block diagram of an air-cooled refrigerator according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a sterilization apparatus of an air-cooled refrigerator according to an embodiment of the present invention;
fig. 4 is a circuit block diagram of a sterilization apparatus of an air-cooled refrigerator according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a sterilization apparatus of an air-cooled refrigerator according to an embodiment of the present invention;
FIG. 6 is a schematic exploded view of a duct assembly in an air-cooled refrigerator according to one embodiment of the present invention;
FIG. 7 is a schematic view of airflow in an air-cooled refrigerator according to one embodiment of the present invention;
fig. 8 is a schematic view of a sterilization control method of an air-cooled refrigerator according to an embodiment of the present invention; and
fig. 9 is a flowchart of a sterilization control method of an air-cooled refrigerator according to an embodiment of the present invention.
Detailed Description
FIG. 1 is a schematic partial block diagram of an air-cooled refrigerator 10 according to one embodiment of the present invention; fig. 2 is an electrical configuration block diagram of the air-cooled refrigerator 10 according to one embodiment of the present invention. The cabinet 210 of the air-cooled refrigerator 10 of the present embodiment may include a case made of a steel plate having an open front, an inner container made of a synthetic resin and provided in an inner space of the case and having an open front, and a heat insulating material made of a foamed polyurethane, which is filled and foamed in a gap between the case and the inner container. A storage compartment 220 for storing food or other articles, etc. is formed in the case 210. The interior of the case 210 may be partitioned into one or more storage compartments 220 according to preservation temperature and usage, and may include, for example, a refrigerating compartment, a freezing compartment, a temperature-changing compartment, and the like. The refrigeration system 310 may be a conventional compression refrigeration system that provides refrigeration to the storage compartment 220 via air cooling to provide the storage compartment 220 with a desired storage temperature. In some embodiments, the preservation temperature of the refrigerating chamber of the refrigerator can be 2-9 ℃, or can be 4-7 ℃; the preservation temperature of the freezing chamber can be-22 to-14 ℃, or can be-20 to 16 ℃. The freezing chamber is arranged below the refrigerating chamber, and the temperature-changing chamber is arranged between the freezing chamber and the refrigerating chamber. The temperature in the freezer compartment is typically in the range of-14 ℃ to-22 ℃. The temperature-changing chamber can be adjusted according to the requirement to store proper food.
The refrigeration system 310 may be a refrigeration cycle system composed of a compressor, a condenser, a throttle device, an evaporator, and the like. The evaporator is configured to directly or indirectly supply cooling energy into the storage space. The back of the box body 210 is also provided with an evaporator chamber which is communicated with the storage compartment 220 through a supply air duct 230, an evaporator is arranged in the evaporator chamber, a fan 320 is arranged at an outlet of the evaporator chamber to circularly refrigerate the storage compartment 220, and air flow enters the storage compartment 220 from a supply air inlet 221 and returns to the evaporator chamber from an air return inlet 222. The supply air duct 230 is used to supply a cooling air flow to the storage compartment 220. Since such refrigeration systems themselves are well known and readily implemented by those skilled in the art, the refrigeration system 310 itself will not be described in further detail herein so as not to obscure or obscure the inventive aspects of the present application.
The sterilization device 100 is used for releasing sterilization ions into the inner space of the box 210, and may include a voltage boost circuit 112 and an ion generator 121, wherein the ion generator 121 is used for releasing sterilization ions, and the voltage boost circuit 112 is used for providing the ion generator 121 with the required electric energy.
The controller 330 may include a memory 332 and a processor 331, wherein the memory 332 stores a control program 333, and the control program 333 is executed by the processor 331 to implement the sterilization control method for the air-cooled refrigerator of the embodiment. The controller 330, as a control core of the air-cooled refrigerator 10 of this embodiment, can be implemented by configuring a corresponding control program 333 through the memory 332, the processor 331 (including a single chip, a digital signal processor, etc.) and its accessory circuits (a power supply, a clock circuit, etc.).
It will be understood by those skilled in the art that the air-cooled refrigerator 10 of the present invention is not limited to a refrigerator having a refrigerating chamber and a freezing chamber in a general sense for storing food, but may be other devices having a refrigerating function, such as wine cabinets, cold storage tanks, etc.
Fig. 3 is a schematic structural view of the sterilization apparatus 100 of the air-cooled refrigerator 10 according to one embodiment of the present invention. Fig. 4 is a circuit block diagram of the sterilization apparatus 100 of the air-cooled refrigerator 10 according to one embodiment of the present invention; fig. 5 is a schematic circuit diagram of the sterilization apparatus 100 of the air-cooled refrigerator 10 according to one embodiment of the present invention. The sterilization apparatus 100 of the present embodiment may include: a first module 110, a second module 120, a connection cable 130. Wherein the first module 110 has a voltage boost circuit 112 therein, and the second module 120 includes an ionizer 121. The connecting cable 130 connects the first module 110 and the second module 120 so that the first module 110 controls the ionizer 121 to ionize the air to generate odor removing and sterilizing substances (sterilizing ions). Since the first module 110 is separated from the second module 120, the first module 110 is far away from the air in the storage compartment 220 or the air duct 230, so that the damage and the failure of the first module 110 caused by the cooled air or the high-humidity environment in the refrigerator can be prevented, especially the moisture in the cooled air is prevented from entering the first module 110, and the service life of the sterilization device 100 is remarkably prolonged.
The first module 110 may have a power input interface 111, a boost circuit 112, and a high voltage output interface 113 disposed therein. The power input interface 111 is used for connecting an externally provided dc power supply, which may be a control power supply of the air-cooled refrigerator 10, for example, a dc power of 5V or 12V. When the power input interface 111 is connected to a dc power supply, the booster circuit 112 starts operating.
The voltage boost circuit 112 is used for controllably converting the direct-current power supply into a first voltage for generating sterilizing ions and a second voltage for heating, wherein the first voltage is higher than the second voltage; when the input power supply stops supplying power to the booster circuit 112, the booster circuit 112 stops operating. The boost circuit 112 may include an inverter to controllably invert the direct-current power supply into a high-voltage alternating current whose voltage is a first voltage or a second voltage. The inverter has three working states, and is used for inverting a first voltage, a second voltage and stopping working respectively. The boost circuit 112 may further include auxiliary circuits such as a boost transformer and a protection circuit, etc., and the circuit structure of the inverter, the boost transformer, the protection circuit, etc. are well known to those skilled in the art, and are not described in detail in the description of the embodiment.
The voltage values of the first voltage that satisfies the ionization excitation requirement of the ionizer 121 and the second voltage that can heat the electrodes of the ionizer 121 can be set according to the specification of the ionizer 121. For example, in a specific ionizer 121 of this embodiment, the effective value of the first voltage ranges from 2000V to 5000V, and further may preferably range from 2800V to 4000V, for example, about 3500V; the effective value of the second voltage ranges from 1000 to 1800V, more preferably from 1200V to 1600V, for example, around 1500V.
The high voltage output interface 113 is used for outputting the first voltage, the second voltage, or suspending the output.
The cable 130 is connected to the high voltage output interface 113 of the first module 110 to transmit the first voltage and the second voltage to the ionizer 121. The connection cable 130 may include two cables, and the connection cable 130 has an insulating layer capable of securing insulation of the first voltage and the second voltage. In order to ensure reliable transmission of the high first voltage and the high second voltage and reduce the line loss, the length of the connection cable 130 is required to be not too long and to extend from the arrangement position of the first module 110 to the second module 120. Generally the length of the connection cable 130 is required to be shorter than 100cm, preferably shorter than 30 cm.
The first module 110 is also provided with a voltage feedback port 141. The voltage feedback port 141 is connected to the voltage boosting circuit 112, and is configured to output a feedback voltage corresponding to the first voltage or the second voltage to indicate a boosted state of the voltage boosting circuit 112. The boosting circuit 112 may feed back its operation state to the voltage feedback port 141, and the boosting circuit 112 outputs a feedback signal corresponding to the output voltage through the voltage feedback port, the level of the feedback signal corresponding to the magnitude of the output voltage, so that a relatively high level is output when the first voltage is output and a relatively low level is output when the second voltage is output. And the specific level can reflect the magnitude of the output voltage. So that whether the first voltage or the second voltage is normal can be known through the feedback signal. In determining the state of the boost circuit 112, the feedback signal may be compared to predetermined normal power supply thresholds (including a second voltage threshold range corresponding to the second voltage, a first voltage threshold range corresponding to the first voltage).
The voltage feedback port 141 may be integrated with the power input interface 111 as an input, for example, on a multi-port connector. The first module 110 may further include a controlled terminal 142, wherein the controlled terminal 142 is connected to the voltage boosting circuit 112 and configured to receive an external control signal (the control signal may be a control signal sent by the controller 330 for adjusting the operating state of the sterilization apparatus 100 according to the operating condition of the air-cooled refrigerator 10), so that the voltage boosting circuit 112 converts the first voltage or the second voltage according to the control signal.
The input terminal of the first module 110 may be a four-terminal interface (four terminals are the positive and negative terminals of the dc power supply, the voltage feedback port 141, and the controlled terminal 142). The input terminal may be connected to an electronic control board on which the controller 330 is located through a cable, so as to receive a control signal of the controller 330 and return a feedback signal thereto.
The sterilization apparatus 100 may also be connected to a current detection apparatus 150. The current detection means 150 is configured to detect a value of the current supplied to the power input interface 111 for determining an operation state of the sterilization apparatus 100, i.e. the current detection means 150 is used to detect the input current of the voltage boost circuit 112. The current detection device 150 may be included in series with a power line supplying power to the power input interface 111. It is also possible to determine whether the sterilization apparatus 100 is operating normally using the detection current of the current detection apparatus 150.
The first module 110 can be disposed within an electronic control box that can be used to define a closed receiving cavity in which the first module 110 is mounted.
The ionizer 121 is configured to be excited to ionize by a first voltage to release sterilizing ions, and to heat at a second voltage to eliminate condensation. Ionizer 121 may include an ionizing head 122. The ionization head 122 is arranged with a first electrode 123 and a second electrode 124 connected to a connection cable 130, the first electrode 123 and the second electrode 124 having a discharge gap therebetween, the discharge gap being configured to be broken down by a first voltage such that ambient air is excited to ionize; and at a second voltage to keep the first electrode 123 isolated from the second electrode 124 and each generating heat.
The ionizer 121 may further include a base forming a mounting cavity for mounting the ionization head 122, one face of the mounting cavity having an opening; and the ionization head 122 is installed such that the discharge gap is exposed to the opening.
The ion generator 121 of the sterilization device 100 may be directly disposed in the storage compartment 220 or disposed in the air supply duct 230. The sterilization apparatus 100 may be used to sterilize a target sterilization compartment of the air-cooled refrigerator 10, or may be used to sterilize the entire inside of the air-cooled refrigerator 10. The sterilization apparatus 100 may be preferably disposed in an air supply duct 230 that supplies air to the target sterilization compartment 220. The first module 110 can be arranged in a foaming layer or other sealing areas of the refrigerator, so that the first module is ensured to be isolated from a humid environment, and the reliability is improved.
Fig. 6 is a schematic exploded view of a duct assembly in the air-cooled refrigerator 10 according to one embodiment of the present invention, and fig. 7 is a schematic view of airflow in the air-cooled refrigerator 10 according to one embodiment of the present invention. The air supply duct 230 has a housing space 226 therein, and the housing space 226 is located outside each air supply duct 230. The first module 110 is disposed in the accommodating space 226. The second module 120 is disposed in an air duct 230. The connection cable 130 electrically connects the first module 110 and the second module 120. The first module 110 controls the second module 120 through the connection cable 130 so that the ionizer 121 ionizes air to generate sterilizing ions.
The sterilization ions can enter the target sterilization chamber 220 from the air supply opening 221 along with the refrigeration air, the diffusion speed is high, the sterilization ions are uniformly distributed in the storage chamber 220 along with the air flow, and part of the sterilization ions can also return to the air duct 230 from the air return opening 222, so that the sterilization ions are uniformly distributed in the storage chamber 220 and the air duct 230. The first module 110 is disposed separately from the second module 120, and the first module 110 is disposed outside the air duct 230, so that the damage and failure of the first module 110 caused by the cooled air or the high-humidity environment in the air-cooled refrigerator 10 can be prevented, and particularly, the moisture in the cooled air is prevented from entering the first module 110. The first module 110 does not occupy the space of the air supply duct 230, so that the air supply duct 230 supplies air smoothly.
In some embodiments of the present invention, the generated sterilizing ions of the ionizer 121 include at least one of singlet reactive oxygen, superoxide radical, peroxy radical, oxyanion, hydroxyl radical, ozone, and hydrogen peroxide.
The connecting cable 130 is installed in a wire slot formed in the air duct assembly. The duct cover 223 is mounted to the front side of the duct foam 225. The wire slot is obliquely arranged, and the second module 120 is arranged below the first module 110, so as to prevent condensed water and the like from entering the first module 110 along the wire slot as much as possible.
The first module 110 can be installed at an inclination angle of at least 7 degrees from the horizontal direction, and can remove the tension of water, thereby preventing water drops from entering the inside. The water blocking component 224 is arranged on the containing space 226 and the front side of the wire groove, when in installation, PE cotton can be pasted on the rear surfaces of the first module 110 and the second module 120 for pre-fixing, and then the air duct cover plate 223 can be installed. PE cotton may also be attached to the entire outer surface of the first module 110.
In the air-cooled refrigerator 10 according to the embodiment of the present invention, high-energy and high-activity radicals such as atomic oxygen (O) and hydroxyl (OH —) are generated by bombardment and excitation of high-energy electrons generated by high-voltage discharge. The high-energy active free radicals directly and frequently and directly collide with the odor gas molecules, when the energy obtained by the odor gas molecules is larger than the binding energy of the molecular bond energy of the odor gas molecules, the original molecular structure of the odor gas molecules is destroyed, the molecular chemical bond is opened, the gaseous reaction is promoted to be rapidly carried out, and radicals and solid particles are generated.
In addition, high-voltage discharge can ionize and decompose partial odor gas molecules at the same time. Under the action of the above principle, the sterilization device 100 is placed in the air duct 230, and sterilization ions are transferred into the storage compartment 220 of the air-cooled refrigerator 10 through circulation of the air duct, so as to achieve the effect of filling the inside of the air-cooled refrigerator 10 and deodorizing and sterilizing the compartments of the air-cooled refrigerator 10. And prevents moisture from condensing on the first module 110 of the sterilizing device 100 by means of an effective placement and sealing means, while allowing condensed water to be drained away even if condensation accumulates.
The present embodiment further provides a sterilization control method for an air-cooled refrigerator, which may be executed by the controller 330 of the air-cooled refrigerator 10 in the foregoing embodiment, and fig. 8 is a schematic diagram of the sterilization control method for the air-cooled refrigerator according to an embodiment of the present invention, where the sterilization control method further includes:
step S802, acquiring a start signal of the refrigeration system 310 of the air-cooled refrigerator 10; the activation signal may be determined by detecting an operating condition of the refrigeration system 310 of the air-cooled refrigerator 10. For example, step S802 may include: detecting an operation state of a fan 320 of the refrigeration system 310; when the fan 320 is started and the rotating speed reaches the set rotating speed range, it is determined that the refrigeration system 310 is stably operated. Other means of determining stable operation of the fan 320 include: the rotation speed or voltage of the fan 320 is detected. When the fan 320 is in a stable operation state, the sterilization ions can be ensured to be rapidly diffused, and the local concentration is prevented from being too high. That is, the sterilization device 100 may be activated following the activation of the blower fan 320, and the sterilization ions may be propagated by the airflow to sterilize the entire inside of the air-cooled refrigerator 10.
Step S804, after determining that the refrigeration system 310 is operating stably, controls the operation of the sterilization apparatus 100 according to a set operation cycle, where each operation cycle includes a phase in which the sterilization apparatus 100 operates in an activated state and a phase in which the sterilization apparatus 100 operates in a standby state.
In the excited state, the control voltage boost circuit 112 converts the input power into a first voltage, so that the ionizer 121 is excited by the first voltage to be ionized to release sterilizing ions. Since the first voltage excites the sterilizing ions more intensely, so as to ionize the sterilizing ions with higher concentration for a short time, facilitate the diffusion of the sterilizing ions, and protect the sterilizing apparatus 100, it is necessary to put the sterilizing apparatus into a standby state after the excitation.
In the standby state, the boost circuit 112 may be controlled to convert the input power into the second voltage, so that the ionizer 121 generates heat at the second voltage. Alternatively, in the standby state, the supply of the input power to the booster circuit 112 may be stopped, and the ionizer 121 may be suspended. The selection of the preparation state can be determined according to the specification and the use state of the sterilizer 100. In general, during the start-up of the sterilization apparatus 100, the refrigeration system 310 is started, and a state in which the second voltage is output by the booster circuit 112 may be selected to avoid condensation.
The duration of the phase of the excitation state in each operating cycle may be 500ms to 2s, for example 1 s; and the duration of the preparatory phase in each operating cycle may be 20s to 200s, for example 70 to 80 s.
The duration of the activation state and the duration of the preparation state may be pre-configured according to the actual working conditions of the sterilization apparatus 100. Therefore, the operation process of the sterilization device is a cyclic process of preparation (second voltage) -excitation (first voltage) - … ….
When the sterilization stop condition set during the normal operation of the sterilization apparatus 100 can be satisfied, the boosting circuit 112 may be controlled to be turned off. One sterilization stop condition is: detecting the operation state of the refrigeration system 310 of the air-cooled refrigerator 110; after the fan 320 of the refrigeration system 310 is turned off, the boost circuit 112 is controlled to be turned off, and the abnormal times are cleared, that is, the sterilization apparatus 100 is turned off following the turning off of the fan 320.
Another sterilization stop condition is: counting the number of times the ion generator 121 releases sterilizing ions; after the number of times of excitation of the ionizer 121 exceeds the preset number threshold, the booster circuit 112 is controlled to be turned off, and the abnormal number and the number of times of excitation are cleared to wait for the next start. Namely, the cycle number of the operation period is counted; after the number of times of activation reaches the preset number threshold, the sterilization apparatus 100 is turned off until the next time the activation signal is received (since the ionizer 121 is activated once per one operation period, the number of cycles should be equal to the number of times of activation).
The two sterilization stop conditions can be used simultaneously or alternatively, for example, after the cycle number is over-limit, the fan 320 is still started, and the stop work is completed by the excitation number; if the sterilization time is not reached and the cooling target is completed and the blower 320 is turned off, the sterilization apparatus 100 is turned off by the blower off signal.
The number of cycles may be cleared while the sterilization apparatus 100 is turned off. For recounting at the next start-up.
The sterilization control method of the air-cooled refrigerator of the above embodiment proposes an operation period in which the active state and the standby state are alternately circulated, so that the sterilization apparatus 100 can reliably operate in a low-temperature, moisture-sealed application environment of the refrigerator 10.
Fig. 9 is a flowchart of a sterilization control method of an air-cooled refrigerator according to an embodiment of the present invention. The process comprises the following steps:
step S902, whether the refrigeration system 310 is started;
step S904, after the refrigeration system 310 is started, the sterilization device 100 enters a standby state, for example, the voltage boost circuit 112 may output a second voltage to heat the ionizer 121;
step S906, after the preparation stage is completed, the sterilization apparatus 100 enters an excitation state, for example, the voltage boost circuit 112 may output a first voltage to make the ion generator 121 release sterilization ions;
step S908, after the excitation state is completed, accumulating the cycle number S, that is, S + 1;
step S910, judging whether the cycle time S exceeds a preset time threshold, and entering the next cycle if the cycle time S does not exceed the preset time threshold;
in step S912, when cooling is completed or S > S0, the number of cycles S is cleared, and the sterilizer 100 is turned off to wait for the next start.
The threshold value of the number of the cycle times, the duration of the preparation state, and the duration of the activation state are all parameters that can be set according to the actual conditions of the sterilization device 100 and the air-cooled refrigerator 10.
Further, according to the air-cooled refrigerator 10 and the control method of the sterilization device 100 of the air-cooled refrigerator 10, after the refrigeration system 310 is started, the sterilization device is operated periodically, so that the working reliability of the sterilization device 100 is improved, and the requirement of sterilization in the low-temperature and humidity closed air-cooled refrigerator 10 is met.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. A sterilization control method for an air-cooled refrigerator, wherein the air-cooled refrigerator comprises an air supply air duct and a containing space arranged outside the air supply air duct, a sterilization device is arranged in the air-cooled refrigerator, and the sterilization device comprises: a first module having a boost circuit; a second module comprising an ionizer; the connecting cable is connected with the first module and the second module so that the first module controls the ionizer to ionize air to release sterilizing ions; the first module is arranged in the containing space, and the second module is arranged in the air supply duct; the germicidal device is configured to have an excited state and a ready state that release germicidal ions, and the method further comprises:
acquiring a starting signal of a refrigerating system of the air-cooled refrigerator;
after the stable operation of the refrigerating system is determined, controlling the sterilization device to work according to a set operation period, wherein each operation period comprises a stage that the sterilization device works in an excitation state and a stage that the sterilization device works in a preparation state;
the step of obtaining the starting signal of the refrigerating system of the air-cooled refrigerator comprises the following steps: detecting the running state of a fan of the refrigeration system; when the fan is started and the rotating speed reaches a set rotating speed range, determining that the refrigerating system stably operates;
the process of controlling the sterilization device to work according to the set operation cycle further comprises the following steps: counting the number of cycles of the operating period; and after the cycle times reach a preset time threshold value, closing the sterilization device until a starting signal is received next time.
2. The method as claimed in claim 1, wherein the controlling the operation of the sterilization apparatus according to the set operation cycle further comprises:
acquiring a closing signal of a refrigerating system of the air-cooled refrigerator;
and closing the sterilizing device according to the closing signal until a starting signal is received next time.
3. The method of claim 1, wherein
The sterilization device comprises a booster circuit and an ion generator,
and under the excitation state, the booster circuit is controlled to convert an input power supply into a first voltage, so that the ion generator is excited and ionized by the first voltage to release bactericidal ions.
4. The method of claim 3, wherein in the ready state,
the booster circuit is controlled to convert the input power supply into a second voltage, so that the ion generator generates heat under the second voltage; or
And stopping supplying the input power supply to the booster circuit to enable the ion generator to pause operation.
5. The method of claim 4, wherein,
the value range of the effective value of the first voltage is 2000-5000V;
the effective value of the second voltage ranges from 1000V to 1800V.
6. The method of claim 3, wherein,
the duration of the stage of the excitation state in each operation period is 500ms to 2 s;
the duration of the preparatory phase in each operating cycle is 20s to 200 s.
7. An air-cooled refrigerator comprising:
the box body defines a storage chamber;
the air supply duct is used for providing refrigerating airflow to the storage compartment;
the containing space is arranged on the outer side of the air supply duct;
a sterilization device comprising: a first module having a boost circuit; a second module comprising an ionizer; the connecting cable is connected with the first module and the second module so that the first module controls the ionizer to ionize air to release sterilizing ions; wherein
The first module is arranged in the containing space, and the second module is arranged in the air supply duct;
a controller comprising a memory and a processor, wherein the memory stores a control program, and the control program is used for implementing the sterilization control method of the air-cooled refrigerator according to any one of claims 1 to 6 when being executed by the processor.
8. The air-cooled refrigerator of claim 7,
the boost circuit is controlled to convert an input power source into a first voltage and a second voltage lower than the first voltage,
the ionizer is excited to be ionized by the first voltage to release sterilizing ions.
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| CN111609664B (en) * | 2020-05-11 | 2021-10-15 | 珠海格力电器股份有限公司 | Refrigerator sterilization control method and device, storage medium, server and refrigerator |
| CN115218591B (en) * | 2021-04-15 | 2023-12-15 | 云米互联科技(广东)有限公司 | Odor removal and sterilization control method of refrigerator, odor removal and sterilization module of refrigerator and refrigerator |
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| JP2003042645A (en) * | 2001-07-26 | 2003-02-13 | Matsushita Refrig Co Ltd | Refrigerator |
| CN101334606A (en) * | 2007-06-29 | 2008-12-31 | 夏普株式会社 | Ion generating element, charging device and image forming apparatus |
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