CN112484236A - Filter screen detection method and device and air conditioner - Google Patents
Filter screen detection method and device and air conditioner Download PDFInfo
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- CN112484236A CN112484236A CN202011301653.5A CN202011301653A CN112484236A CN 112484236 A CN112484236 A CN 112484236A CN 202011301653 A CN202011301653 A CN 202011301653A CN 112484236 A CN112484236 A CN 112484236A
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
Abstract
The invention discloses a filter screen detection method, a filter screen detection device and an air conditioner, and relates to the field of filter screen detection; the detection method comprises the following steps: and acquiring a current static pressure value and an initial static pressure value of a return air pipe where the filter screen is positioned, and judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value. The scheme of the invention can be used in the air-conditioning indoor unit for a long time, and whether the dust deposition of the filter screen is serious or not is judged according to the current static pressure value and the initial static pressure value in the return air duct. The dust accumulation of the filter screen can be detected in time, so that a user can clean or replace the dust accumulation in time, the air resistance is large after the dust accumulation of the filter screen is prevented, the air quantity is reduced, the condition that the heat exchange effect of the indoor unit is poor occurs, and the using effect of the indoor unit is greatly improved.
Description
Technical Field
The present invention relates to a filter screen detection technology, and in particular, to a filter screen detection method, device and air conditioner.
Background
The air pipe type indoor unit is usually installed in a ceiling in a concealed manner, indoor air enters the indoor unit through an air return pipeline to be processed, and finally returns to the indoor through an air supply pipeline to finish air circulation.
Because dust with certain concentration exists in the air, after the indoor unit of the air conditioner is used for a long time, a filter screen of a return air inlet of the indoor unit of the air conditioner has certain dust deposition phenomenon, after the dust deposition of the filter screen, if the filter screen is not cleaned or replaced in time, the resistance of air inlet is increased, the air quantity is reduced, the heat exchange effect of the indoor unit is deteriorated, and finally the use effect of the indoor unit is reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a filter screen detection method, a filter screen detection device and an air conditioner, which aim to solve the problems that after dust is accumulated on a filter screen, if the filter screen is not cleaned or replaced in time, the resistance of air inlet is increased, the air volume is reduced, the heat exchange effect of an indoor unit is poor, and the use effect of the indoor unit is finally reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows:
in a first aspect,
a filter screen detection method comprises the following steps:
acquiring a current static pressure value and an initial static pressure value of a return air pipe where the filter screen is located;
and judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value.
Further, the obtaining of the initial static pressure value of the return air duct where the filter screen is located includes:
when the air conditioner is used for the first time, controlling the air conditioner to stably run on any windshield for a preset time;
detecting a static pressure value in the return air duct, and taking the static pressure value detected at the moment as an initial static pressure value under the windshield;
replacing the windshield, and acquiring an initial static pressure value of the replaced windshield;
and repeating the steps until the initial static pressure values of all the windshields are obtained.
Further, the judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value comprises:
and judging whether the filter screen needs to be cleaned or replaced according to the difference value or the ratio of the current static pressure value to the initial static pressure value under the same windshield.
Further, the judging whether the filter screen needs to be cleaned or replaced according to the difference value or the ratio of the current static pressure value to the initial static pressure value under the same windshield includes:
when the difference value or the ratio of the current static pressure value to the initial static pressure value under the same windshield is detected to be larger than or equal to a preset value within a continuous preset time, judging that the filter screen needs to be cleaned or replaced;
and when the difference value or the ratio of the current static pressure value to the initial static pressure value is detected to be smaller than the preset value within the continuous preset time, judging that the filter screen does not need to be cleaned or replaced.
Further, still include: when the difference value or the ratio of the current static pressure value to the initial static pressure value of the same windshield is detected to be larger than or equal to a preset value within the continuous preset time, replacing the windshield, and detecting the relation between the difference value or the ratio of the current static pressure value to the initial static pressure value after the windshield is replaced within the continuous preset time and the preset value;
if the difference value or the ratio is larger than or equal to the preset value after the windshield is replaced, judging that the filter screen needs to be cleaned or replaced; and if the difference value or the ratio is smaller than the preset value after the windshield is replaced, judging that the filter screen does not need to be cleaned or replaced.
Further, when the filter screen is judged to need cleaning or replacement, a prompt is sent to a user.
Further, the sending of the prompt to the user is performed in at least one of the following manners:
lighting prompt on the air conditioner;
the method comprises the steps that a preset fault code is displayed on an indoor unit display lamp panel;
and sending prompt information to the mobile phone.
Further, still include:
when the filter screen is detected to be cleaned or replaced, acquiring an initial static pressure value of the cleaned or replaced filter screen;
and judging whether the filter screen needs to be cleaned or replaced according to the cleaned or replaced current static pressure value and the initial static pressure value.
Further, still include:
and when the current static pressure value is smaller than the initial static pressure value and the absolute value of the difference value between the current static pressure value and the initial static pressure value is larger than a preset value, a filter screen damage prompt is sent.
In a second aspect of the present invention,
a filter screen detection apparatus, comprising:
the acquisition module is used for acquiring the current static pressure value and the initial static pressure value of the return air pipe where the filter screen is located;
and the judging module is used for judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value.
In a third aspect,
an air conditioner comprising: the device according to the above technical solution.
This application adopts above technical scheme, possesses following beneficial effect at least:
the technical scheme of the application provides a filter screen detection method, a filter screen detection device and an air conditioner, wherein the detection method comprises the following steps: and acquiring a current static pressure value and an initial static pressure value of a return air pipe where the filter screen is positioned, and judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value. The scheme of the invention can be used in the air-conditioning indoor unit for a long time, and whether the dust deposition of the filter screen is serious or not is judged according to the current static pressure value and the initial static pressure value in the return air duct. The dust accumulation of the filter screen can be detected in time, so that a user can clean or replace the dust accumulation in time, the air resistance is large after the dust accumulation of the filter screen is prevented, the air quantity is reduced, the condition that the heat exchange effect of the indoor unit is poor occurs, and the using effect of the indoor unit is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of a filter screen detection method according to an embodiment of the present invention;
fig. 2 is a block diagram of a structure of a filter screen detection apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a detection structure of an air conditioner according to an embodiment of the present invention;
FIG. 4 is a flow chart of static pressure initialization for an air conditioner according to an embodiment of the present invention;
fig. 5 is a flow chart of self-detecting control of dust deposition on a filter screen of an air conditioner according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the technical solutions of the present invention is provided with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, an embodiment of the present invention provides a filter screen detection method, including the following steps:
acquiring a current static pressure value and an initial static pressure value of a filter screen;
and judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value of the filter screen.
The embodiment of the invention provides a filter screen detection method, which comprises the following steps: and acquiring a current static pressure value and an initial static pressure value of a return air pipe where the filter screen is positioned, and judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value. The scheme of the invention can be used in the air-conditioning indoor unit for a long time, and whether the dust deposition of the filter screen is serious or not is judged according to the current static pressure value and the initial static pressure value in the return air duct. The dust accumulation of the filter screen can be detected in time, so that a user can clean or replace the dust accumulation in time, the air resistance is large after the dust accumulation of the filter screen is prevented, the air quantity is reduced, the condition that the heat exchange effect of the indoor unit is poor occurs, and the using effect of the indoor unit is greatly improved.
It should be noted that the static pressure refers to the pressure applied to the surface of the object when the object is at rest or in uniform linear motion. The static pressure can be used for representing the resistance of the air duct, namely the larger the resistance of the air duct is, the larger the static pressure is, so that when the dust is accumulated on the filter screen, the resistance of the air duct is inevitably increased, and the static pressure is also increased. And the more dust is deposited, the more the static pressure increases.
As a supplementary explanation to the above embodiment, obtaining the initial static pressure value of the filter screen includes:
when the air conditioner is used for the first time, the air conditioner is controlled to stably run for a preset time under any windshield; detecting a static pressure value in the return air duct, and taking the static pressure value detected at the moment as an initial static pressure value under a windshield of the filter screen; replacing the windshield, and acquiring an initial static pressure value under the replaced windshield; and repeating the steps until the initial static pressure value under all windscreens is obtained. In general, a static pressure value detected when the air conditioner is first used is set as an initial static pressure value. In obtaining the initial static pressure value, it is necessary to obtain the initial static pressure value under each windshield.
As an optional implementation manner of the embodiment of the present invention, determining whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value of the filter screen includes:
and judging whether the filter screen of the filter screen needs to be cleaned or replaced according to the difference value or the ratio of the current static pressure value and the initial static pressure value of the filter screen under the same windshield. Specifically, when the difference value or the ratio of the current static pressure value to the initial static pressure value of the filter screen under the same windshield is detected to be greater than or equal to a preset value within a continuous preset time period, the filter screen of the filter screen is judged to need to be cleaned or replaced;
and when the difference value or the ratio of the current static pressure value to the initial static pressure value of the filter screen is detected to be smaller than the preset value of the filter screen within the continuous preset time, judging that the filter screen of the filter screen does not need to be cleaned or replaced.
Because the gear is different, the wind speed is different, and the static pressure is different in the return air duct. In order to ensure the accuracy of the judgment result, the current static pressure value and the initial static pressure value under the same windshield are adopted during the judgment.
In the actual use process, due to some reasons, the situation that the difference value or the ratio of the current static pressure value to the current static pressure value under a certain windshield is larger than or equal to the preset value may occur, but in the actual situation, the dust deposition of the filter screen is not much, and the filter screen does not need to be replaced or cleaned. Therefore, when the difference value or the ratio of the current static pressure value and the initial static pressure value of the filter screen under the same windshield is detected to be larger than or equal to the preset value in the continuous preset time period, the windshield is replaced, and the relation between the difference value or the ratio of the current static pressure value and the initial static pressure value of the filter screen after the windshield is replaced in the continuous preset time period and the preset value is detected; if the difference value or the ratio of the filter screen after the windshield is replaced is greater than or equal to the preset value of the filter screen, judging that the filter screen of the filter screen needs to be cleaned or replaced; and if the difference value or the ratio of the filter screen after the windshield is replaced is smaller than the preset value of the filter screen, judging that the filter screen of the filter screen does not need to be cleaned or replaced.
And comparing the initial static pressure value or the current static pressure value of the replaced windshield again by replacing the windshield, and finally making judgment according to the comparison. Considering that the possibility of false alarm of both gears is very small, the embodiment of the invention can be changed once. Of course, the more gears that are shifted, the less contingency and the more accurate, but the more complex the control.
In some optional embodiments, when it is determined that the filter screen of the filter screen needs cleaning or replacement, a prompt is sent to the user. Adopting at least one of the following modes:
lighting prompt on the air conditioner; exemplarily, an LED lamp is arranged in an air conditioner indoor unit to continuously flash;
the method comprises the steps that a preset fault code is displayed on an indoor unit display lamp panel; exemplarily, a special fault code is displayed on a display lamp panel of the indoor unit;
and sending prompt information to the mobile phone, illustratively, sending a short message to remind the user by being interconnected with the mobile phone.
As an optional implementation manner of the embodiment of the present invention, the method further includes:
when the filter screen of the filter screen is detected to be cleaned or replaced, acquiring an initial static pressure value of the cleaned or replaced filter screen;
and judging whether the filter screen needs to be cleaned or replaced according to the cleaned or replaced current static pressure value and the initial static pressure value.
After the filter screen is cleaned or replaced, the initial static pressure value can be changed, if the original initial static pressure value is still adopted, the judgment result can be influenced, and the filter screen is not beneficial to being cleaned or replaced in time. Thus, the initial static pressure value is re-measured after each cleaning or replacement and compared to the current static pressure value based on the new initial static pressure value.
In some optional embodiments, when the current static pressure value of the filter screen is smaller than the initial static pressure value of the filter screen and the absolute value of the difference value between the current static pressure value and the initial static pressure value is larger than a preset value, a filter screen damage prompt is sent. Under normal conditions, the static pressure value of the filter screen is increased due to more accumulated dust. Therefore, if the current static pressure value is smaller than the initial static pressure value and the difference value between the current static pressure value and the initial static pressure value is not within the allowable range, it is indicated that the filter screen is damaged and air cannot be filtered, a prompt is also sent to remind a user of timely replacing the filter screen at the moment, and the preset value in the embodiment is the maximum value of the allowable range of the difference value.
In an embodiment, the present invention further provides a filter screen detection apparatus, as shown in fig. 2, including the following steps:
the acquiring module 21 is used for acquiring a current static pressure value and an initial static pressure value of a filter screen of the filter screen; when the air conditioner is used for the first time, the acquisition module controls the air conditioner to stably run on any windshield for a preset time; detecting a static pressure value in the return air duct, and taking the static pressure value detected at the moment as an initial static pressure value under a windshield of the filter screen; replacing the windshield, and acquiring an initial static pressure value of the replaced windshield; and repeating the steps until the initial static pressure values of all the windshields are obtained.
And the judging module 22 is used for judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value of the filter screen. Specifically, whether the filter screen of the filter screen needs to be cleaned or replaced is judged according to the difference value or the ratio of the current static pressure value and the initial static pressure value of the filter screen under the same windshield. When the difference value or the ratio of the current static pressure value to the initial static pressure value of the filter screen under the same windshield is detected to be greater than or equal to a preset value within a continuous preset time, judging that the filter screen of the filter screen needs to be cleaned or replaced; and when the difference value or the ratio of the current static pressure value to the initial static pressure value of the filter screen is detected to be smaller than the preset value of the filter screen within the continuous preset time, judging that the filter screen of the filter screen does not need to be cleaned or replaced.
Optionally, when the difference or the ratio of the current static pressure value and the initial static pressure value of the filter screen under the same windshield is detected to be greater than or equal to a preset value within the continuous preset time period, replacing the windshield, and detecting the relationship between the difference or the ratio of the current static pressure value and the initial static pressure value of the filter screen after the windshield is replaced within the continuous preset time period and the preset value; if the difference value or the ratio of the filter screen after the windshield is replaced is greater than or equal to the preset value of the filter screen, judging that the filter screen of the filter screen needs to be cleaned or replaced; and if the difference value or the ratio of the filter screen after the windshield is replaced is smaller than the preset value of the filter screen, judging that the filter screen of the filter screen does not need to be cleaned or replaced.
Optionally, when the filter screen is detected to be cleaned or replaced, acquiring an initial static pressure value of the cleaned or replaced filter screen; and judging whether the filter screen needs to be cleaned or replaced according to the cleaned or replaced current static pressure value and the initial static pressure value.
And the prompt module 23 is used for sending a prompt to a user when the filter screen needs to be cleaned or replaced. And when the current static pressure value of the filter screen is smaller than the initial static pressure value of the filter screen and the absolute value of the difference value of the current static pressure value and the initial static pressure value is larger than a preset value, sending a filter screen damage prompt. The filter screen sends a prompt to the user by adopting at least one of the following modes: lighting prompt on the air conditioner; the method comprises the steps that a preset fault code is displayed on an indoor unit display lamp panel; and sending prompt information to the mobile phone.
According to the filter screen detection device provided by the embodiment of the invention, the acquisition module acquires the current static pressure value and the initial static pressure value of the return air pipe where the filter screen is located; the judgment module judges whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value of the filter screen. When the filter screen of the filter screen needs to be cleaned or replaced, the prompt module sends a prompt to a user. And when the current static pressure value of the filter screen is smaller than the initial static pressure value of the filter screen and the absolute value of the difference value of the current static pressure value and the initial static pressure value is larger than a preset value, sending a filter screen damage prompt. The detection device provided by the embodiment of the invention can detect the dust deposition degree of the filter screen and whether the filter screen is damaged or not, and automatically sends a prompt when the filter screen is more in dust deposition or damaged, so that a user can conveniently and directly replace or clean the filter screen.
In one embodiment, the present invention further provides an air conditioner, including the filter screen detection apparatus mentioned in the above embodiments. The structure for detecting dust accumulation in the air conditioner is shown in fig. 3, air enters an indoor unit 3 from an air return window 1 through an air return pipe 2, wherein a detection grille 4 is positioned below the indoor unit, and the air coming out of the indoor unit is sent to the indoor unit through an air outlet pipe 5. Wherein the static pressure detection device 6 is positioned on a return air pipe in front of the indoor unit, and a filter screen is arranged at the return air window. Optionally, the static pressure detection device employs a pitot static tube.
In order to more clearly understand the technical solution of the present application, the embodiment of the present invention further provides a specific detection method.
When the air conditioner is used for the first time by a user, the air conditioner system is generally in a brand new state, the air conditioner can automatically execute a static pressure initialization program at the moment, and an initial static pressure table is updated according to the actual installation condition of the air conditioner.
The initial static pressure table is as follows:
note: p1 and P2.. Pn are factory default to 0 Pa.
As shown in fig. 4, the static pressure initialization program control method is as follows:
setting the wind shield as D1, and detecting and reading the static pressure value Pt of the return air duct after the air conditioner stably operates for 5 min;
if the detection P1 is equal to 0, the static pressure value Pt is given to P1, namely P1 is equal to Pt, which indicates that P1 has not initialized and updated;
otherwise, skipping the initialization update of the static pressure of the next wind shield, namely setting the wind shield as D2 … Dn, and detecting and reading the static pressure value Pt of the return air duct after the air conditioner stably runs for 5 min; and the like until the static pressure initialization of all the windscreens is completed.
As shown in fig. 5, the specific implementation of the filter screen detection is as follows:
in the normal operation process of the indoor unit of the air conditioner, after the indoor unit of the air conditioner stably operates for 5min, detecting the static pressure value Pt of a back air duct filter screen of an air return inlet under an operation wind stop Dn of the indoor unit of the air conditioner in real time;
calculating a difference value delta Pn between the real-time static pressure value Pt and the initial static pressure value Pn, wherein the delta Pn is Pn-Pt;
if the difference value delta Pn is detected to exceed the preset value Xn within 5min continuously, namely the time T (the delta Pn is more than or equal to Xn) is more than or equal to 5min, starting to execute a filter screen dust accumulation verification program, otherwise, normally operating the air conditioner indoor unit;
after a filter screen dust deposition verification program is executed, an air damper of the indoor unit of the air conditioner is automatically set to Dn-1, and after the indoor unit of the air conditioner is stably operated for 5min, the static pressure value Pt of a back air duct of a return air inlet filter screen under the air damper Dn-1 of the indoor unit of the air conditioner is detected in real time;
if the difference value delta Pn-1 is detected to exceed the preset value Xn-1 continuously for 5min, namely the time T (the delta Pn-1 is more than or equal to Xn-1) is more than or equal to 5min, judging that dust is accumulated on a filter screen of an air return port of the indoor unit of the air conditioner; otherwise, the indoor unit of the air conditioner still operates normally;
after dust accumulation of a filter screen at an air return inlet of the indoor air conditioner is judged, the indoor air conditioner automatically operates at the highest wind range, and sends a special signal to a user (such as setting an LED lamp in the indoor air conditioner to continuously flash, displaying a special fault code on a display lamp panel of the indoor air conditioner, or sending a short message to remind the user by interconnecting with a mobile phone, etc.), so that the user is reminded of cleaning the filter screen in time, and the heat exchange effect of the indoor air conditioner is improved.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. A filter screen detection method is characterized by comprising the following steps:
acquiring a current static pressure value and an initial static pressure value of a return air pipe where the filter screen is located;
and judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value.
2. The method of claim 1, wherein: the step of obtaining the initial static pressure value of the return air pipe where the filter screen is located comprises the following steps:
when the air conditioner is used for the first time, controlling the air conditioner to stably run on any windshield for a preset time;
detecting a static pressure value in the return air duct, and taking the static pressure value detected at the moment as an initial static pressure value under the windshield;
replacing the windshield, and acquiring an initial static pressure value of the replaced windshield;
and repeating the steps until the initial static pressure values of all the windshields are obtained.
3. The method of claim 1, wherein: the judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value comprises the following steps:
and judging whether the filter screen needs to be cleaned or replaced according to the difference value or the ratio of the current static pressure value to the initial static pressure value under the same windshield.
4. The method of claim 3, wherein: the step of judging whether the filter screen needs to be cleaned or replaced according to the difference value or the ratio of the current static pressure value to the initial static pressure value under the same windshield comprises the following steps:
when the difference value or the ratio of the current static pressure value to the initial static pressure value under the same windshield is detected to be larger than or equal to a preset value within a continuous preset time, judging that the filter screen needs to be cleaned or replaced;
and when the difference value or the ratio of the current static pressure value to the initial static pressure value is detected to be smaller than the preset value within the continuous preset time, judging that the filter screen does not need to be cleaned or replaced.
5. The method of claim 4, further comprising: when the difference value or the ratio of the current static pressure value to the initial static pressure value of the same windshield is detected to be larger than or equal to a preset value within the continuous preset time, replacing the windshield, and detecting the relation between the difference value or the ratio of the current static pressure value to the initial static pressure value after the windshield is replaced within the continuous preset time and the preset value;
if the difference value or the ratio is larger than or equal to the preset value after the windshield is replaced, judging that the filter screen needs to be cleaned or replaced; and if the difference value or the ratio is smaller than the preset value after the windshield is replaced, judging that the filter screen does not need to be cleaned or replaced.
6. The method according to claim 4 or 5, characterized in that: and when the filter screen is judged to need cleaning or replacement, sending a prompt to a user.
7. The method of claim 6, wherein: the sending of the prompt to the user is performed in at least one of the following ways:
lighting prompt on the air conditioner;
the method comprises the steps that a preset fault code is displayed on an indoor unit display lamp panel;
and sending prompt information to the mobile phone.
8. The method of claim 1, further comprising:
when the filter screen is detected to be cleaned or replaced, acquiring an initial static pressure value of the cleaned or replaced filter screen;
and judging whether the filter screen needs to be cleaned or replaced according to the cleaned or replaced current static pressure value and the initial static pressure value.
9. The method of claim 1, further comprising:
and when the current static pressure value is smaller than the initial static pressure value and the absolute value of the difference value between the current static pressure value and the initial static pressure value is larger than a preset value, a filter screen damage prompt is sent.
10. A filter screen detection device, characterized by comprising:
the acquisition module is used for acquiring the current static pressure value and the initial static pressure value of the return air pipe where the filter screen is located;
and the judging module is used for judging whether the filter screen needs to be cleaned or replaced according to the current static pressure value and the initial static pressure value.
11. An air conditioner, characterized by comprising: the apparatus of claim 10.
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