CN111380293A - Air-cooled refrigerator and control method of sterilization device of air-cooled refrigerator - Google Patents
Air-cooled refrigerator and control method of sterilization device of air-cooled refrigerator Download PDFInfo
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- CN111380293A CN111380293A CN201811628596.4A CN201811628596A CN111380293A CN 111380293 A CN111380293 A CN 111380293A CN 201811628596 A CN201811628596 A CN 201811628596A CN 111380293 A CN111380293 A CN 111380293A
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- booster circuit
- cooled refrigerator
- sterilization
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 111
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- 239000003570 air Substances 0.000 claims description 42
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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
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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
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
-
- 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 control method of a sterilization device of the air-cooled refrigerator, wherein the air-cooled refrigerator is internally provided with the sterilization device, the sterilization device comprises a booster circuit and an ion generator, the booster circuit is used for controllably outputting a first voltage for generating sterilization ions and a second voltage for heating, and feeding back a feedback signal for indicating the magnitude of the output voltage; the ionizer is for energizing ionization at a first voltage to release sterilizing ions and heating at a second voltage to eliminate condensation, and the method comprises: controlling the booster circuit to work in a state of outputting a second voltage; collecting a feedback signal of a booster circuit; and under the condition that the feedback signals of the continuously set number of acquisition points indicate that the output voltage of the booster circuit is within the preset second voltage threshold range, adjusting the working state of the booster circuit to output the first voltage so as to release the bactericidal ions. The scheme of the invention improves the reliability of the sterilizing device and meets the requirement of the sterilizing device on the operation of the refrigerator in a low-temperature humid environment.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a control method of a sterilization device in an air-cooled refrigerator.
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 the sealed environment for a long period of time, particularly for fresh vegetables placed in a cold storage compartment, the water loss stimulates the fruits and vegetables to release ethylene, which promotes chloroplast disintegration, tissue cell membrane deterioration, and decreased 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
An object of the present invention is to provide an air-cooled refrigerator and a method for controlling a sterilization apparatus thereof, which can make the sterilization apparatus meet the requirement of reliable operation in a low-temperature and humid environment inside the refrigerator.
Another object of the present invention is to eliminate condensation of the sterilizing device in time.
According to one aspect of the invention, a control method of a sterilization device in an air-cooled refrigerator is provided, wherein the sterilization device is arranged in the air-cooled refrigerator and comprises a booster circuit and an ion generator, the booster circuit is used for controllably outputting a first voltage for generating sterilization ions and a second voltage for heating, and feeding back a feedback signal indicating the magnitude of the output voltage; the ionizer is for energizing ionization at a first voltage to release sterilizing ions and heating at a second voltage to eliminate condensation, and the method further comprises: controlling the booster circuit to work in a state of outputting a second voltage; collecting a feedback signal of a booster circuit; and under the condition that the feedback signals of the continuous set number of acquisition points indicate that the output voltage of the booster circuit is within a preset second voltage threshold range, adjusting the working state of the booster circuit to output the first voltage so as to enable the ion generator to release the sterilizing ions.
Optionally, before the step of controlling the step of operating the voltage boost circuit in the state of converting the second voltage, the method further includes: detecting the running state of a refrigerating system of the air-cooled refrigerator; and after the fan of the refrigeration system is started, controlling the booster circuit to work in a state of converting the second voltage.
Optionally, in a case that the feedback signal indicates that the output voltage of the voltage boost circuit exceeds the preset second voltage threshold range after the step of acquiring the feedback signal of the voltage boost circuit, the method further includes: determining that the sterilization device is abnormal, and counting the abnormal times; judging whether the abnormal times exceed the limit; if not, after the booster circuit is paused for the preset interval time, the step of controlling the booster circuit to work in the state of outputting the second voltage is executed again.
Optionally, the method further includes, in case that the number of anomalies exceeds a limit: the booster circuit is stopped to output a warning signal of the failure of the sterilization device.
Optionally, after adjusting the operating state of the voltage boost circuit to output the first voltage, the method further includes: collecting a feedback signal of a booster circuit; judging whether the feedback signal indicates that the output voltage of the booster circuit is within a preset first voltage threshold range or not; if not, executing the steps of determining that the sterilization device is abnormal and counting the abnormal times.
Optionally, in a case that the feedback signal indicates that the output voltage of the voltage boost circuit is within a preset first voltage threshold range, the method further includes: counting the excitation times after the feedback signal indicates that the time of the output voltage of the booster circuit within the preset first voltage threshold range exceeds the set excitation time; and the working state of the booster circuit is adjusted to convert the second voltage for the next cycle.
Optionally, after counting the number of times of excitation, the method further includes: judging that the excitation times reach a preset time threshold; if yes, the booster circuit is controlled to be closed, and the abnormal times are cleared.
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.
According to another 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 arranged in the air supply duct or the storage room; and the controller comprises a memory and a processor, wherein the memory stores a control program, and the control program is used for realizing the control method of the sterilization device in any one of the air-cooled refrigerators when being executed by the processor.
Optionally, an ion generator of the sterilization device is disposed in the air supply duct, and includes: an ionization head having a first electrode and a second electrode connected to the boost circuit by a connection cable, the first electrode and the second electrode having a discharge gap therebetween, the discharge gap configured to be broken down by a first voltage such that ambient air is excited to ionize; and maintaining the first electrode isolated from the second electrode and each generating heat at a second voltage.
According to the air-cooled refrigerator and the control method of the sterilizing device of the air-cooled refrigerator, the sterilizing ions are released in an ionization excitation mode, a sterilizing preparation does not need to be replaced, the air-cooled refrigerator can be reliably used for a long time, and condensation can be eliminated by automatic heating so as to adapt to a low-temperature and humid application environment. Based on the characteristics of the low-temperature and moist use environment of the refrigerator, the sterilization process of the sterilization device is optimized, when the booster circuit outputs the first voltage to enable the ion generator to release sterilization ions, the working state of the sterilization device is judged by utilizing the feedback signal of the booster circuit, when the feedback signal indicates that the output voltage flow is abnormal, fault processing is carried out by timing, and the normal state of the sterilization device is recovered, so that the reliability of the sterilization device is improved, and the condition that the sterilization device cannot release the sterilization ions due to condensation is avoided.
Further, according to the air-cooled refrigerator and the control method of the sterilization device of the air-cooled refrigerator, after the refrigeration system is started, the sterilization device is preheated, sterilization ions are released after condensation is eliminated, and the heating state and the ion release state are determined by using feedback signals respectively.
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 control method of a sterilizing apparatus in an air-cooled refrigerator according to an embodiment of the present invention; and
fig. 9 is a flowchart of a method of controlling a sterilization apparatus in 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 housing 210 may be partitioned into one or more storage compartments 220, which may include, for example, a refrigerating compartment, a freezing compartment, a temperature-changing compartment, and the like, according to a preservation temperature and a use. 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 provide 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 for supplying 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 method for controlling the sterilization device in the air-cooled refrigerator according to 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. A connecting cable 130 connects the first module 110 and the second module 120 such that the first module 110 controls an ionizer 121 to ionize air to generate odor removing and sanitizing substances (sanitizing 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 boosting 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, the first voltage being higher than the second voltage. 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 two working states and is used for inverting a first voltage and a second voltage 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 a first voltage or a second voltage.
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 voltage 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 detected current of the current detection device 150.
The first module 110 may be disposed within an electronic control box that may be used to define an enclosed receiving cavity in which the first module 110 is mounted.
The ionizer 121 is configured to be ionized by a first voltage to release sterilizing ions, and to be heated 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 interior 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 is provided therein with a housing space 226, 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 control method of a sterilization apparatus in an air-cooled refrigerator, which may be executed by the controller 330 of the air-cooled refrigerator 10 in the above embodiment, and fig. 8 is a schematic diagram of the control method of the sterilization apparatus in the air-cooled refrigerator according to an embodiment of the present invention, and the control method further includes:
in step S802, the step-up circuit 112 is controlled to operate in a state of outputting the second voltage, that is, the sterilization apparatus 100 is controlled to generate heat to eliminate condensation.
Step S804, collecting a feedback signal of the boost circuit 112;
in step S806, it is determined whether the feedback signal indicates that the output voltage of the voltage boost circuit 112 is within the preset second voltage threshold range, that is, whether the output voltage of the voltage boost circuit 112 is within the second voltage range for normally heating the ionizer 121.
Step S808, when the feedback signal of the consecutive set number of collection points indicates that the output voltage of the voltage boost circuit 112 is within the preset second voltage threshold range, adjusting the operating state of the voltage boost circuit 112 to output the first voltage, so that the ionizer releases the sterilizing ions. Since the acquisition period is determined, this step ensures that the boost circuit 112 maintains the heating of the sterilization apparatus 100 for the duration of time, ensuring that the subsequently released sterilization ions can work properly.
Before step S802, the operation state of the refrigeration system 310 of the air-cooled refrigerator 10 may also be detected; after the fan 320 of the refrigeration system 310 is started, the boost circuit 112 is controlled to operate in a state of converting the second voltage. That is, the sterilization apparatus 100 may be started following the start of the blower 320, and may perform the entire sterilization of the inside of the air-cooled refrigerator 10 by using the airflow to transmit the sterilization ions.
In the case that the feedback signal indicates that the output voltage of the booster circuit 112 exceeds the preset second voltage threshold range after the step of collecting the feedback signal of the booster circuit in step S804, it is determined that the sterilization device 100 is abnormal, and the number of times of abnormality is counted; judging whether the abnormal times exceed the limit; if not, the step of controlling the boosting circuit 112 to operate in the state of outputting the second voltage is executed again after the boosting circuit 112 is suspended for the preset interval time. The number of abnormal overrun described above can be flexibly set according to the operating condition of the sterilization apparatus 100. Thereby restoring normal heating by restarting the booster circuit 112 when an abnormality occurs. The method also comprises the following steps when the abnormal times exceed the limit: the booster circuit 112 is stopped and a warning signal indicating the failure of the sterilizer is output. For example, the display screen of the air-cooled refrigerator 10 or other means may be used to warn that the sterilization apparatus 100 fails to recover from the failure.
After step S808, a feedback signal of the boost circuit may also be acquired; determining whether the feedback signal indicates that the output voltage of the boost circuit 112 is within a preset first voltage threshold range; if not, executing the steps of determining that the sterilization device is abnormal and counting the abnormal times. Whether the abnormal times exceed the limit or not can be judged subsequently; if not, the step of controlling the boosting circuit 112 to operate in the state of outputting the second voltage is executed again after the boosting circuit 112 is suspended for the preset interval time. The number of abnormal overrun described above can be flexibly set according to the operating condition of the sterilization apparatus 100. Thus, when the abnormality of releasing the bactericidal ions occurs, normal heating is resumed by restarting the booster circuit 112, and the release of the bactericidal ions is resumed by restarting the heating.
Counting the number of times of excitation after the feedback signal indicates that the time of the output voltage of the voltage boost circuit 112 within the preset first voltage threshold range exceeds the set excitation time; and adjusts the operating state of the boost circuit 112 to convert the second voltage for the next cycle. The process of exciting the bactericidal ions by the first voltage is violent, so that the bactericidal ions with higher concentration can be ionized in a short time, and the operation cannot be carried out for a long time, so that the operation state needs to be converted into the operation state of the second voltage after the excitation reaches the excitation time.
The heating time (the time for continuously setting the number of collection points) and the activation time may be configured in advance according to the actual working condition of the sterilization device 100, for example, the heating time is set to be 20 to 200 seconds, and the activation time is set to be 500 milliseconds to 2 seconds. Therefore, the operation process of the sterilization device is a cycle process of heating (second voltage) -excitation (first voltage) - … ….
After counting the number of times of excitation, the method may further include: judging whether the excitation times reach a preset time threshold value or not; if yes, the booster circuit is controlled to be closed, and the abnormal times and the excitation times are cleared.
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.
The two sterilization stop conditions can be used simultaneously or alternatively, for example, after the excitation times are exceeded, the fan 320 is still started, and the stop work is completed by the excitation times; 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 sterilization apparatus 100 is turned off and the number of abnormal times is cleared. For recounting at the next start-up.
The control method of the sterilization device in the air-cooled refrigerator of the embodiment optimizes the sterilization process of the sterilization device 100, and timely processes the sterilization process when the heating or the release of ions is abnormal, thereby ensuring the operation reliability of the sterilization device 100.
Fig. 9 is a flowchart of a method of controlling a sterilization apparatus in an air-cooled refrigerator according to an embodiment of the present invention. The process comprises the following steps:
step S902, controlling the boosting circuit 112 to operate in a state of outputting the second voltage, so as to heat the ionizer 121;
step S904, after heating for N seconds, collecting a feedback signal of the booster circuit 112;
step S906, judging whether the feedback signal continuously indicates that the output voltage of the booster circuit is within a preset second voltage threshold range in the continuous X acquisition points;
step 908, if yes, controlling the booster circuit to work in a state of outputting a first voltage, so that the ion generator releases sterilizing ions;
step S910, if the feedback signal indicates that the output voltage of the booster circuit exceeds the preset second voltage threshold range, accumulating the abnormal times S, and stopping the booster circuit 112 to output a warning signal of the failure of the sterilization device when the S accumulated value exceeds the preset prompting times S0;
in step S920, a feedback signal of the boost circuit 112 is collected.
Step S922, determining whether the feedback signal indicates that the output voltage of the boost circuit 112 is within a preset first voltage threshold range;
step S924, when the duration of the output voltage of the voltage boost circuit 112 within the preset first voltage threshold reaches the set excitation time, counting the number of excitations v to v + 1;
step S926, judging whether the refrigeration is finished or whether the excitation frequency v is greater than a preset excitation threshold value v0, namely v > v 0;
in step S928, when the cooling is completed or v > v0, the abnormality frequency S and the excitation frequency v are cleared, and the sterilization apparatus 100 is turned off.
N, S0, X, the second voltage threshold range, the first voltage threshold range, and the sterilization time in the above flow are all parameters that can be set according to the actual conditions of the sterilization apparatus 100 and the air-cooled refrigerator 10.
Further, according to the air-cooled refrigerator 10 and the control method of the sterilization device 100 thereof, after the refrigeration system 310 is started, the sterilization device 100 is preheated, sterilization ions are released after condensation is eliminated, the heating state and the ion release state are determined by using feedback signals respectively, abnormal states are found and solved in time, the working reliability of the sterilization device 100 is improved, and sterilization requirements are 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 (10)
1. A control method of a sterilization device in an air-cooled refrigerator is characterized in that the sterilization device is arranged in the air-cooled refrigerator and comprises a booster circuit and an ion generator, wherein the booster circuit is used for controllably outputting a first voltage for generating sterilization ions and a second voltage for heating, and feeding back a feedback signal indicating the magnitude of the output voltage; the ionizer is for the first voltage to excite ionization to release bactericidal ions and to generate heat at the second voltage to eliminate condensation, and the method further comprises:
controlling the boosting circuit to work in a state of outputting the second voltage;
collecting a feedback signal of the booster circuit;
and under the condition that the feedback signals of the continuous set number of acquisition points indicate that the output voltage of the booster circuit is within a preset second voltage threshold range, adjusting the working state of the booster circuit to output the first voltage so as to enable the ion generator to release the sterilization ions.
2. The method of claim 1, wherein prior to the step of controlling the boost circuit to operate in a state of transitioning out of the second voltage, further comprising:
detecting the running state of a refrigerating system of the air-cooled refrigerator;
and after the fan of the refrigeration system is started, controlling the booster circuit to work in a state of converting the second voltage.
3. The method of claim 1, wherein, in the event that the feedback signal indicates that the output voltage of the boost circuit is outside a preset second voltage threshold range after the step of collecting the feedback signal of the boost circuit, further comprising:
determining that the sterilization device is abnormal, and counting the abnormal times;
judging whether the abnormal times exceed the limit;
if not, after the booster circuit is paused for a preset interval time, the step of controlling the booster circuit to work in the state of outputting the second voltage is executed again.
4. The method of claim 3, wherein in the event that the number of anomalies exceeds a limit, further comprising:
and stopping the booster circuit and outputting a warning signal of the fault of the sterilizing device.
5. The method of claim 3, further comprising, after adjusting the operating state of the boost circuit to output the first voltage:
collecting a feedback signal of the booster circuit;
judging whether the feedback signal indicates that the output voltage of the booster circuit is within a preset first voltage threshold range;
if not, executing the steps of determining that the sterilization device is abnormal and counting the abnormal times.
6. The method of claim 5, wherein if the feedback signal indicates that the output voltage of the boost circuit is within a preset first voltage threshold range, further comprising:
counting the excitation times after the feedback signal indicates that the time of the output voltage of the booster circuit within a preset first voltage threshold range exceeds a set excitation time; and adjusting the working state of the booster circuit to convert the second voltage for the next cycle.
7. The method of claim 6, further comprising, after counting the number of firings:
judging whether the excitation times reach a preset time threshold value or not;
and if so, controlling the boosting circuit to be closed, and clearing the abnormal times.
8. The method of any one of claims 1 to 7, 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.
9. 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 sterilizing device is arranged in the air supply duct or the storage room;
a controller comprising a memory and a processor, wherein the memory stores a control program, and the control program is used for implementing the control method of the sterilization device in the air-cooled refrigerator according to any one of claims 1 to 8 when being executed by the processor.
10. The air-cooled refrigerator of claim 9, wherein an ionizer of the sterilization device is disposed in the supply air duct, and comprises:
an ionization head having a first electrode and a second electrode connected to the voltage boost circuit by a connection cable, the first electrode and the second electrode having a discharge gap therebetween, the discharge gap configured to be broken down by the first voltage such that ambient air is excited to ionize; and maintaining the first electrode isolated from the second electrode and each generating heat at the second voltage.
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