CN116202205A - Air conditioner with ultraviolet sterilization device and method - Google Patents
Air conditioner with ultraviolet sterilization device and method Download PDFInfo
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- CN116202205A CN116202205A CN202310010083.1A CN202310010083A CN116202205A CN 116202205 A CN116202205 A CN 116202205A CN 202310010083 A CN202310010083 A CN 202310010083A CN 116202205 A CN116202205 A CN 116202205A
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- 230000001954 sterilising effect Effects 0.000 title claims abstract description 100
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 description 9
- 230000002035 prolonged effect Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 230000002070 germicidal effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- 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
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
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- 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
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/24—Apparatus using programmed or automatic operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The invention provides an air conditioner with ultraviolet sterilization device, comprising: the device comprises an ultraviolet sterilization device, a low-voltage DC stabilized power supply, a limit switch, a control circuit and a control chip; the ultraviolet sterilization device is arranged in the shell; the low-voltage DC stabilized power supply supplies power to the ultraviolet sterilization device through the limit switch and the control circuit in sequence; the limit switch is closed and opened by closing and opening the front panel; the control chip is electrically connected with the limit switch and is in signal connection with the fan motor; the control circuit realizes the electric connection between the conducting limit switch and the ultraviolet sterilization device based on the driving signal output by the control chip; after receiving an instruction for starting the ultraviolet sterilization device, if the control chip judges that the limit switch is closed and the fan motor works, the control chip outputs a driving signal to the control circuit, and the ultraviolet sterilization device works; if the limit switch is disconnected or the fan motor is stopped, the control chip cannot output a driving signal. The invention also provides a sterilization method of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner with an ultraviolet sterilization device and a method.
Background
After the air conditioner is used for a long time, bacteria are easy to breed in the air conditioner, and the bacteria can flow into a room along with air flow, so that the health of a human body is endangered. Bacteria pair
Ultraviolet rays with the wavelength are most sensitive, and after absorbing the ultraviolet rays with the wavelength, DNA or RNA is destroyed, so that cells are not split any more, and the aim of sterilization is fulfilled.
Some air conditioners are provided with ultraviolet sterilizing lamps which are arranged in an air conditioner shell, and the ultraviolet sterilizing lamps irradiate a filter screen or an evaporator for sterilization. The ultraviolet germicidal lamp has the characteristics of concentrated and non-divergent light source, and can greatly improve the sterilization effect by matching with different lighting angles and directions, meet the requirements of rapidly detecting the bacterial count and reducing the air purification difficulty, and improve the domestic life quality of people. However, such air conditioners have the following disadvantages: (1) when the sterilization function is started, the air conditioner panel is not closed or the panel is opened in the running process, and the ultraviolet sterilization lamp still works normally, so that generated ultraviolet rays leak, eyes and skin are easy to burn, and injury is caused to human bodies. (2) In order to achieve the sterilization effect, the current of the ultraviolet sterilization lamp is relatively large, and the self-heating is high. Especially when the air conditioner heats, the surrounding environment temperature of the ultraviolet sterilizing lamp is higher, and the heat emitted by the UVC (ultraviolet) lamp during working is influenced, so that the service life of the ultraviolet sterilizing lamp is influenced.
GB/T19258-2012 is a national standard specific to ultraviolet germicidal lamps, and provides corresponding technical requirements and test methods for the ultraviolet germicidal lamps. The main performance indexes such as safety requirements, ultraviolet radiation efficiency/radiation flux, ultraviolet radiation illuminance ozone output rate, ultraviolet radiation flux maintenance rate/service life and the like closely related to the ultraviolet germicidal lamp are mainly emphasized in the standard. Whether the ultraviolet germicidal lamp in the air conditioner strictly performs the above national standard is a serious problem related to human health.
Disclosure of Invention
The invention aims to provide an air conditioner with an ultraviolet sterilization device, which can effectively ensure the use safety, and automatically cut off the power supply of the ultraviolet sterilization device under the condition that the front panel of the air conditioner is opened or the air conditioner is not started, so as to prevent the harm of ultraviolet leakage to human bodies. The ultraviolet sterilization device is provided with a plurality of working modes, so that the service life of the ultraviolet sterilization device is effectively prolonged. And the air conditioner disclosed by the invention meets the national GB/T19258-2012 standard, and ensures the use safety.
In order to achieve the above object, the present invention provides an air conditioner having an ultraviolet sterilization device, the air conditioner including a housing, a front panel provided on the housing, an evaporator provided in the housing, and a blower fan, the air conditioner further comprising: the device comprises an ultraviolet sterilization device, a low-voltage DC stabilized power supply, a limit switch, a control circuit and a control chip;
the ultraviolet sterilization device is arranged inside the shell;
the low-voltage DC stabilized voltage power supply supplies power to the ultraviolet sterilization device through the limit switch and the control circuit in sequence; closing and opening the limit switch is realized by closing and opening the front panel;
the control chip is electrically connected with the limit switch and is in signal connection with the fan motor; the control circuit realizes the electric connection between the conducting limit switch and the ultraviolet sterilization device based on the driving signal output by the control chip; after receiving an instruction for starting the ultraviolet sterilization device, if the control chip judges that the limit switch is closed and the fan motor is in a working state, the control chip outputs the driving signal to the control circuit, and the ultraviolet sterilization device works; if the limit switch is disconnected or the fan motor is in a stop state, the control chip cannot output the driving signal.
Optionally, the ultraviolet sterilization device comprises at least one ultraviolet lamp.
Optionally, the control circuit comprises at least one control element; the control chip comprises at least one driving pin, and the driving pin is used for outputting the driving signal; different control elements are respectively connected with different driving pins; the control element is electrically connected with the low-voltage DC stabilized power supply through the limit switch; the at least one ultraviolet lamp is electrically connected with the limit switch through the corresponding control element; the control element conducts the electrical connection between the corresponding ultraviolet lamp and the limit switch based on the received driving signal; the control element comprises: any one or more of triode, MOS tube and drive IC.
Optionally, the air conditioner with the ultraviolet sterilization device further comprises a plurality of current limiting resistors; the ultraviolet lamp is electrically connected with the corresponding control element through the corresponding current limiting resistor.
Optionally, the control chip further includes a first pin and a second pin;
the first pin is electrically connected with the limit switch, and when the limit switch is closed, the first pin acquires a high-level signal; otherwise, the first pin collects a low-level signal;
the second pin signal is connected with the output end of the fan motor, and when the fan motor works, the second pin acquires a high-level signal; otherwise, the second pin collects a low-level signal;
if the first pin and the second pin both acquire high-level signals, at least one driving pin outputs driving signals, and the low-voltage DC stabilized power supply supplies power to the corresponding ultraviolet lamp through the corresponding control element; if any one of the first pin and the second pin collects a low-level signal, all the driving pins do not output driving signals.
The invention also provides a sterilization method of the air conditioner, which is realized by adopting the sterilization device of the air conditioner with the ultraviolet sterilization device, comprising the following steps:
sending an instruction for starting the ultraviolet sterilization device to the control chip and selecting the working mode of the ultraviolet sterilization device;
the control chip judges states of the limit switch and the fan motor; if the limit switch is in a closed state and the fan motor is in a working state, the control chip sends a driving signal to the corresponding control element based on the working mode, and the corresponding ultraviolet lamp is lightened;
if the limit switch is in a disconnected state or the fan motor is in a stopped state, the control chip cannot send the driving signal, and all ultraviolet lamps are not lightened.
Optionally, the operation mode includes: a polling mode; in the polling mode, the control chip sequentially and circularly drives the control elements to be conducted, any two control elements are not conducted at the same time, and each control element is conducted for a set time length.
Optionally, the control chip also records the number of times each control element is turned on; the working mode also comprises a memory polling mode; in the memory polling mode, the control chip sequentially and circularly drives a plurality of control elements to be conducted, any two control elements are not conducted at the same time, and each control element is conducted for a set time length; when the memory polling mode is entered each time, the control element which is conducted for the first time by the control chip is the control element with the minimum conducting frequency in the plurality of control elements.
Optionally, the operation mode further includes a current limiting mode; in the current limiting mode, the control chip drives at least one control element to be conducted at a time; and the brightness of the corresponding ultraviolet lamp is adjusted by controlling the resistance value of the corresponding current limiting resistor and/or the duty ratio of the corresponding driving signal.
Optionally, the operation mode further includes an enhancement mode; in the enhancement mode, the control chip drives all control elements to be conducted, and all ultraviolet lamps work simultaneously, so that quick sterilization is realized.
Compared with the prior art, the invention has the beneficial effects that:
1) The air conditioner with the ultraviolet sterilization device and the method thereof can effectively sterilize the air flowing out of the air duct of the evaporator of the indoor unit. The control chip controls whether to start the ultraviolet sterilization device based on the collected states of the limit switch and the fan motor, can prevent ultraviolet leakage caused by the fact that the front panel is not closed in place, and can also avoid the long-term starting of the ultraviolet sterilization device under the condition that the air conditioner is closed, so that the service life of the sterilization device is shortened.
2) The invention can also prevent the ultraviolet ray leakage caused by opening the front panel of the air conditioner when the ultraviolet sterilization device works, thereby avoiding the harm to human body. And the air conditioner disclosed by the invention meets the national GB/T19258-2012 standard, and ensures the use safety.
3) The invention is provided with the polling mode and the memory polling mode for the ultraviolet sterilization device, so that a plurality of ultraviolet lamps can work in turn, the continuous working time of the ultraviolet lamps under the conditions of high temperature and high current is shortened, the sterilization effect is ensured, the damage of the ultraviolet lamps due to the continuous working for a long time is prevented, and the service life of the ultraviolet lamps is effectively prolonged. Particularly, in the memory polling mode, the tertiary tube with the least conduction times is conducted preferentially, so that the ultraviolet lamp with the less lighting times can be lighted preferentially, the total working time of each ultraviolet ray is ensured to be equal as much as possible, and the service life of each ultraviolet lamp is prolonged.
4) The invention also provides a current limiting working mode for the ultraviolet sterilization device, can flexibly adjust the brightness of the corresponding ultraviolet lamp, can avoid the ultraviolet lamp from generating excessive heat and prolong the service life of the ultraviolet lamp while meeting the sterilization requirement. The invention also provides an enhanced mode for the ultraviolet sterilization device, which is particularly suitable for rapid sterilization before the temperature of the surrounding environment of the evaporator rises when the air conditioner is started.
5) In the invention, when part of ultraviolet lamps are damaged, the rest ultraviolet lamps can still work normally, so that the reliability of the ultraviolet sterilization device is improved.
Drawings
For a clearer description of the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are one embodiment of the present invention, and that, without inventive effort, other drawings can be obtained by those skilled in the art from these drawings:
fig. 1 is a circuit diagram of supplying power to an ultraviolet sterilization device by a low-voltage DC regulated power supply in accordance with a first embodiment of the present invention;
FIG. 2 is a circuit diagram of an alternative embodiment for supplying power to an ultraviolet sterilization device via a low voltage DC regulated power supply;
FIG. 3 is a flowchart of a sterilizing method of an air conditioner according to the present invention;
FIG. 4 is a flowchart showing the operation of the control chip driving control circuit in the polling mode according to the first embodiment;
FIG. 5 is a flowchart showing the operation of the control chip driving control circuit in the memory polling mode according to the second embodiment.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As used in this specification and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".
In addition, in the description of the present application, the terms "first," "second," "third," etc. are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Example 1
The invention provides an air conditioner with an ultraviolet sterilization device, which comprises a shell, a front panel arranged on the shell, an evaporator and a fan arranged in the shell, as shown in fig. 1, the air conditioner further comprises: the ultraviolet sterilization device, a low-voltage DC stabilized power supply 10, a limit switch SW, a plurality of current limiting resistors, a control circuit and a control chip 1.
The ultraviolet sterilization device is arranged inside the shell and comprises at least one ultraviolet lamp. And the ultraviolet lamp is used in accordance with the national standard, so that the use safety is ensured. In this embodiment, in order to better sterilize the air flowing in the evaporator air duct, the ultraviolet sterilization device is disposed near the evaporator.
The low-voltage DC stabilized power supply 10 supplies power to the ultraviolet sterilization device through the limit switch SW and the control circuit in sequence. By closing and opening the front panel, the limit switch SW is closed and opened. In the present embodiment, a constant voltage source having a voltage of DC12.7V (this is merely an example and not a limitation of the present invention) is employed as the low-voltage DC regulated power supply.
The control circuit comprises at least one control element, and the control element is electrically connected with the low-voltage DC regulated power supply 10 through the limit switch SW. At least one ultraviolet lamp is electrically connected with the limit switch SW through the corresponding control element. The control element turns on the electrical connection between the corresponding ultraviolet lamp and the limit switch SW based on the received driving signal. In the present invention, the control element includes: any one or more of triode, MOS tube and drive IC.
The control circuit in this embodiment includes at least one transistor. The limit switch SW is electrically connected between the low-voltage DC regulated power supply 10 and the collector of the transistor. At least one ultraviolet lamp is connected in series or parallel between the emitter of the corresponding triode and ground. The low voltage DC regulated power supply 10 is controlled by a triode to supply power to a corresponding ultraviolet lamp. In the invention, the connection mode of the ultraviolet lamps between the triode emitter and the ground is not limited, and any connection mode meeting the actual requirements can be adopted.
In this embodiment, as shown in fig. 1, the control circuit includes 2 transistors (the number of transistors is merely an example and is not a limitation of the present invention). The ultraviolet lamp UVC_LED1 and R1 are connected in series between the emitter of the triode D1 and the ground, and the ultraviolet lamp UVC_LED2 and R2 are connected in series between the emitter of the triode D2 and the ground. Regulating the brightness of ultraviolet lamp UVC_LED1 and UVC_LED2 through current limiting resistors R1 and R2
In another embodiment, as shown in fig. 2, the control circuit includes a transistor D1. Two ultraviolet lamps uvc_ld1, uvc_ld2 are connected in parallel between the emitter of the transistor D1 and ground. The ultraviolet lamp UVC_LED1 and UVC_LED2 are respectively connected with the emitter of the triode D1 through corresponding current limiting resistors R1 and R2.
The control chip 1 comprises a first pin a1, a second pin a2 and a plurality of driving pins. The first pin a1 is electrically connected with the limit switch SW, and when the limit switch SW is closed, the first pin a1 acquires a high-level signal; otherwise, the first pin a1 collects a low level signal. The second pin a2 is in signal connection with the output end of the fan motor 2, and when the fan motor 2 works, the second pin a2 acquires a high-level signal; otherwise, the second pin a2 collects a low level signal.
The bases of different triodes are respectively connected with different driving pins, the driving pins are used for outputting driving signals to the bases of corresponding triodes, the emitter and collector of the corresponding triodes are conducted, and finally the low-voltage DC regulated power supply 10 and the corresponding ultraviolet lamp are conducted. In the embodiment, as shown in fig. 1, the bases of the transistors D1 and D2 are connected to the driving pins M1 and M2, respectively. In another embodiment, as shown in fig. 2, the base of the transistor D1 is connected to the driving pin M1.
If the first pin a1 and the second pin a2 both acquire high-level signals, and the control chip 1 receives an instruction for starting the ultraviolet sterilization device, at least one driving pin of the control chip 1 outputs a driving signal, the corresponding triode is conducted, and the low-voltage DC regulated power supply 10 supplies power to the corresponding ultraviolet lamp through the corresponding triode. If any one of the first pin a1 and the second pin a2 collects a low-level signal, all driving pins do not output driving signals, and all ultraviolet lamps are not lightened.
In another embodiment, the air conditioner further provides a filter loop including a plurality of filter capacitors respectively connected between the plurality of driving pins and ground. Clutter in the drive signal is filtered by the filter capacitor (the filter capacitor is not required when the drive signal does not need to be filtered). As shown in fig. 1, the present embodiment includes filter capacitors C1 and C2 respectively connected between the driving pin M1 and ground and between the driving pin M2 and ground. In another embodiment, as shown in fig. 2, a filter capacitor C1 is included and is connected between the driving pin M1 and ground.
The invention can prevent the ultraviolet leakage caused by the fact that the front panel is not closed in place, and can also avoid the reduction of the service life of the sterilizing device caused by long-term opening of the ultraviolet sterilizing device under the condition that the air conditioner is closed. And when the fan stops working, the air channel of the evaporator can not be exhausted, and unnecessary waste can be caused by starting the ultraviolet sterilization device. The invention can also prevent the ultraviolet ray leakage caused by opening the front panel of the air conditioner when the ultraviolet sterilization device works, thereby avoiding the harm to human body.
The invention also provides a sterilization method of the air conditioner, which is realized by adopting the sterilization device of the air conditioner with the ultraviolet sterilization device, as shown in figure 3, and comprises the following steps:
s1, sending an instruction for starting an ultraviolet sterilization device to a control chip 1 and selecting an operating mode of the ultraviolet sterilization device;
s2, the control chip 1 judges states of the limit switch SW and the fan motor 2; if the limit switch SW is in a closed state and the fan motor 2 is in a working state, the control chip 1 sends a driving signal to a corresponding control element based on the working mode, and a corresponding ultraviolet lamp is lightened;
s3, if the limit switch SW is in an off state or the fan motor 2 is in a stop state, the control chip 1 does not send the driving signal, and all ultraviolet lamps are not lightened.
The operating mode includes a polling mode. In the polling mode, the control chip 1 sequentially and circularly drives the plurality of control elements to be conducted, any two control elements are not conducted at the same time, and each control element is conducted for a set time length.
Taking fig. 1 as an example, in the polling mode, in step S2, the control chip 1 sends a driving signal to a corresponding triode based on the operation mode, and the corresponding ultraviolet lamp is turned on, as shown in fig. 4, including:
s21, the control chip 1 drives the triode D1 to be conducted (the ultraviolet lamp UVC_LED1 is lighted), and does not send a driving signal to the triode D2 (the ultraviolet lamp UVC_LED2 is turned off), so that timing is started;
s22, if the duration of the ultraviolet lamp uvc_led1 is up to the preset time duration (30 minutes in the present embodiment, this is only an example and not a limitation of the present invention), the control chip 1 stops sending the driving signal to the transistor D1 (the ultraviolet lamp uvc_led1 is turned off). The control chip 1 drives the triode D2 to be conducted (the ultraviolet lamp UVC_LED2 is lightened), and timing is restarted; if the time duration is reached, the process proceeds to step S100.
In the embodiment, in the polling mode, the ultraviolet lamps UVC_LED1 and UVC_LED2 are controlled to be alternately lightened, so that the continuous working time of the ultraviolet lamps UVC_LED1 and UVC_LED2 under the conditions of high temperature (higher temperature near an evaporator) and high current is shortened, the ultraviolet lamp UVC_LED1 and UVC_LED2 are prevented from being damaged due to continuous operation for a long time while the sterilization effect is guaranteed, and the service lives of the ultraviolet lamp UVC_LED1 and UVC_LED2 are effectively prolonged. And when one of the ultraviolet lamp UVC_LED1 and the ultraviolet lamp UVC_LED2 is damaged, the other ultraviolet lamp can still work normally, so that the reliability of the ultraviolet sterilization device is improved.
Example two
Unlike the above embodiment, the control chip 1 also records the number of times each control element is turned on, and the operation mode in this embodiment is a memory polling mode. In the memory polling mode, the control chip 1 sequentially and circularly drives a plurality of control elements to be conducted, any two control elements are not conducted at the same time, and each control element is conducted for a set time length. Each time the memory polling mode is entered, the first turned-on control element of the control chip 1 is the control element having the smallest turn-on number among the plurality of control elements. The control element in this embodiment still employs a triode.
Still taking fig. 1 as an example, in the memory polling mode of the present embodiment, the control chip 1 sends a driving signal to a corresponding triode based on the operation mode, and the corresponding ultraviolet lamp is turned on, as shown in fig. 5, including:
s21', the control chip 1 reads the conduction times of the triodes D1 and D2; if the conduction times of the triode D1 are less than the conduction times of the triode D2, when the ultraviolet sterilization device is started, the control chip 1 firstly conducts the triode D1; if the conduction times of the triode D2 are less than the conduction times of the triode D1, when the ultraviolet sterilization device is started, the control chip 1 firstly conducts the triode D2;
s22', the control chip 1 drives the triodes D1 and D2 to be alternately conducted until the ultraviolet sterilization device is turned off.
In this embodiment, in the memory polling mode, the tertiary tube with the least turn-on times is preferentially turned on, so that the ultraviolet lamp with the less turn-on times can be preferentially turned on, the total working time of each ultraviolet ray is ensured to be equal as much as possible, and the service life of each ultraviolet lamp is prolonged. In this embodiment, the control chip 1 further knows the total duration of the operation of the transistors according to the turn-on times of the transistors, and when the total duration of the operation of the transistors reaches the set duration upper limit, the control chip 1 reminds the user of replacement in an audible and visual alarm manner.
Example III
Unlike the above embodiments, the operation mode in this embodiment is a limited-flow mode. In the current limiting mode, the control chip 1 drives at least one control element to be conducted at a time, and the brightness of the corresponding ultraviolet lamp is adjusted by controlling the resistance value of the corresponding current limiting resistor and/or the duty ratio of the corresponding driving signal.
According to the embodiment, the brightness of the corresponding ultraviolet lamp can be flexibly adjusted based on actual demands, so that the ultraviolet lamp can be prevented from generating excessive heat and the service life of the ultraviolet lamp is prolonged while the sterilizing effect is achieved.
Example IV
Unlike the above embodiment, the operation mode in this embodiment is the enhancement mode. In the enhancement mode, the control chip 1 drives all control elements to be conducted; all ultraviolet lamps work simultaneously, and the air conditioner is particularly suitable for rapid sterilization before the temperature of the surrounding environment of the evaporator rises just after the air conditioner is started.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. An air conditioner with ultraviolet sterilization device, said air conditioner includes the outer cover, set up front panel on said outer cover, evaporator and blower set up in outer cover, characterized by, said air conditioner still contains: the device comprises an ultraviolet sterilization device, a low-voltage DC stabilized power supply, a limit switch, a control circuit and a control chip;
the ultraviolet sterilization device is arranged inside the shell;
the low-voltage DC stabilized voltage power supply supplies power to the ultraviolet sterilization device through the limit switch and the control circuit in sequence; closing and opening the limit switch is realized by closing and opening the front panel;
the control chip is electrically connected with the limit switch and is in signal connection with the fan motor; the control circuit realizes the electric connection between the conducting limit switch and the ultraviolet sterilization device based on the driving signal output by the control chip; after receiving an instruction for starting the ultraviolet sterilization device, if the control chip judges that the limit switch is closed and the fan motor is in a working state, the control chip outputs the driving signal to the control circuit, and the ultraviolet sterilization device works; if the limit switch is disconnected or the fan motor is in a stop state, the control chip cannot output the driving signal.
2. The air conditioner having an ultraviolet sterilizing device according to claim 1, wherein the ultraviolet sterilizing device comprises at least one ultraviolet lamp.
3. The air conditioner with ultraviolet sterilizing device as set forth in claim 2, wherein said control circuit comprises at least one control element; the control chip comprises at least one driving pin, and the driving pin is used for outputting the driving signal; different control elements are respectively connected with different driving pins; the control element is electrically connected with the low-voltage DC stabilized power supply through the limit switch; the at least one ultraviolet lamp is electrically connected with the limit switch through the corresponding control element; the control element conducts the electrical connection between the corresponding ultraviolet lamp and the limit switch based on the received driving signal; the control element comprises: any one or more of triode, MOS tube and drive IC.
4. The air conditioner with ultraviolet sterilizing device as set forth in claim 3, further comprising a plurality of current limiting resistors; the ultraviolet lamp is electrically connected with the corresponding control element through the corresponding current limiting resistor.
5. The air conditioner with ultraviolet sterilizing device as set forth in claim 3, wherein the control chip further comprises a first pin and a second pin;
the first pin is electrically connected with the limit switch, and when the limit switch is closed, the first pin acquires a high-level signal; otherwise, the first pin collects a low-level signal;
the second pin signal is connected with the output end of the fan motor, and when the fan motor works, the second pin acquires a high-level signal; otherwise, the second pin collects a low-level signal;
if the first pin and the second pin both acquire high-level signals, at least one driving pin outputs driving signals, and the low-voltage DC stabilized power supply supplies power to the corresponding ultraviolet lamp through the corresponding control element; if any one of the first pin and the second pin collects a low-level signal, all the driving pins do not output driving signals.
6. A sterilization method of an air conditioner, implemented by the sterilization apparatus of an air conditioner having an ultraviolet sterilization apparatus according to any one of claims 1 to 5, comprising the steps of:
sending an instruction for starting the ultraviolet sterilization device to the control chip and selecting the working mode of the ultraviolet sterilization device;
the control chip judges states of the limit switch and the fan motor; if the limit switch is in a closed state and the fan motor is in a working state, the control chip sends a driving signal to the corresponding control element based on the working mode, and the corresponding ultraviolet lamp is lightened;
if the limit switch is in a disconnected state or the fan motor is in a stopped state, the control chip cannot send the driving signal, and all ultraviolet lamps are not lightened.
7. The method of sterilizing an air conditioner as set forth in claim 6, wherein the operation modes include: a polling mode; in the polling mode, the control chip sequentially and circularly drives the control elements to be conducted, any two control elements are not conducted at the same time, and each control element is conducted for a set time length.
8. The sterilizing method of an air conditioner as claimed in claim 6, wherein the control chip further records the number of times each control element is turned on; the working mode also comprises a memory polling mode; in the memory polling mode, the control chip sequentially and circularly drives a plurality of control elements to be conducted, any two control elements are not conducted at the same time, and each control element is conducted for a set time length; when the memory polling mode is entered each time, the control element which is conducted for the first time by the control chip is the control element with the minimum conducting frequency in the plurality of control elements.
9. The method of sterilizing an air conditioner as set forth in claim 6, wherein the operation mode further includes a current limiting mode; in the current limiting mode, the control chip drives at least one control element to be conducted at a time; and the brightness of the corresponding ultraviolet lamp is adjusted by controlling the resistance value of the corresponding current limiting resistor and/or the duty ratio of the corresponding driving signal.
10. The method of sterilizing an air conditioner as set forth in claim 6, wherein the operation mode further includes an enhancement mode; in the enhancement mode, the control chip drives all control elements to be conducted, and all ultraviolet lamps work simultaneously, so that quick sterilization is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310010083.1A CN116202205A (en) | 2023-01-04 | 2023-01-04 | Air conditioner with ultraviolet sterilization device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310010083.1A CN116202205A (en) | 2023-01-04 | 2023-01-04 | Air conditioner with ultraviolet sterilization device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116202205A true CN116202205A (en) | 2023-06-02 |
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ID=86518337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310010083.1A Pending CN116202205A (en) | 2023-01-04 | 2023-01-04 | Air conditioner with ultraviolet sterilization device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116202205A (en) |
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2023
- 2023-01-04 CN CN202310010083.1A patent/CN116202205A/en active Pending
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