WO2020187223A1 - 空气净化器的滤网清洁方法 - Google Patents
空气净化器的滤网清洁方法 Download PDFInfo
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- WO2020187223A1 WO2020187223A1 PCT/CN2020/079887 CN2020079887W WO2020187223A1 WO 2020187223 A1 WO2020187223 A1 WO 2020187223A1 CN 2020079887 W CN2020079887 W CN 2020079887W WO 2020187223 A1 WO2020187223 A1 WO 2020187223A1
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- filter screen
- filter
- air purifier
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- cleaned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/442—Auxiliary equipment or operation thereof controlling filtration by measuring the concentration of particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Definitions
- the invention belongs to the technical field of air purification, and specifically provides a filter cleaning method of an air purifier.
- the core components of the air purifier are the filter screen and the fan.
- the fan rotates to suck external air into the purifier, then push the air through the filter screen to filter, and finally exhaust the filtered air to achieve air purification.
- the filter screen of the air purifier has a certain service life. As the use time of the filter screen increases, more and more pollutants will accumulate on the filter screen, and the pollutants will gradually block the filter screen, so the filter screen filters and purifies the air. The effect will gradually deteriorate. When the filtering effect of the filter on the air is not up to the standard, it means that the service life of the filter has expired, and the filter of the air purifier needs to be replaced or cleaned. If the filter can be cleaned in time, it will not only ensure the health of the user, but also extend the service life of the filter and save the cost of frequent replacement of the filter.
- the present invention proposes a filter cleaning method of an air purifier to solve the above-mentioned problems.
- the present invention proposes a method for cleaning the filter screen of an air purifier.
- the air purifier includes a fan and a vacuum cleaner, and the fan is used to suck external air into the air purifier when rotating forward and to blow air to the filter when rotating; the vacuum cleaner is used to absorb the filter Dust on the net; the method for cleaning the filter screen of the air purifier includes the following steps: S110, determining whether the filter screen needs to be cleaned; S120, controlling the fan to reverse and start when the filter screen needs to be cleaned The vacuum cleaner.
- step S110 specifically includes: during the operation of the air purifier, detecting the current value of the fan at the current speed; when the current value is low When the current value is preset, it is determined that the filter screen needs to be cleaned.
- step S110 specifically includes: acquiring the current PM2.5 value of the air; when PM2.5>the first preset value, it is determined that the filter needs to be cleaned.
- step S110 specifically includes: obtaining the current PM2.5 value of the air before each operation of the air purifier; when the PM2.5 value exceeds the first 2. At the preset value, record the operating time of the air purifier; when the cumulative operating time exceeds the preset operating time, it is determined that the filter screen needs to be cleaned.
- step S110 specifically includes: acquiring an image of the filter; processing the image of the filter to obtain the dust concentration on the filter; When the dust concentration>the preset dust concentration, it is determined that the filter screen needs to be cleaned.
- step S110 specifically includes: during the operation of the air purifier, detecting the pressure difference between the leeward surface and the windward surface of the filter; when When the pressure difference exceeds the preset pressure difference, it is determined that the filter screen needs to be cleaned.
- step S110 specifically includes: blowing air to the filter to blow up the dust on the filter; detecting the concentration of the dust; when the concentration>preliminary When setting the concentration, it is judged that the filter screen needs to be cleaned.
- the air inlet of the air purifier is provided with a cover plate, and the cover plate is used to open/close the air inlet; the air purifier filter screen
- the cleaning method further includes: before performing step S120, controlling the air inlet cover to close the air inlet.
- the air purifier filter cleaning method further includes: after the filter is vacuumed and cleaned, step S110 is performed again; If the filter screen does not need to be cleaned, it is determined that the cleaning effect of the filter screen meets the requirements; if the filter screen still needs to be cleaned, it is determined that the cleaning effect of the filter screen does not meet the requirements.
- the method for cleaning the filter screen of the air purifier further includes: when the cleaning effect of the filter screen does not meet the requirements, sending out a filter replacement reminder.
- the fan when the filter screen needs to be cleaned, the fan is controlled to reverse to assist the vacuum cleaner to clean the filter screen. After the fan is reversed, it can blow air to the filter to blow up the dust on the filter. At this time, a vacuum cleaner is used to suck out the dust on the filter, so that the filter is cleaned and the user's health is guaranteed. At the same time, the service life of the filter screen can be extended, and the cost of frequent replacement of the filter screen can be saved.
- Fig. 1 is a main flow chart of the filter cleaning method of the air purifier of the present invention.
- the air purifier of the present invention includes a fan and a vacuum cleaner.
- the fan is used to suck external air into the air purifier when rotating forward and to blow air to the filter when it is reversed; the vacuum cleaner is used to absorb dust on the filter.
- Fig. 1 is a main flow chart of the filter cleaning method of the air purifier of the present invention.
- the filter cleaning method of the air purifier of the present invention includes the following steps: S110, judging whether the filter needs to be cleaned; S120, when the filter needs to be cleaned, controlling the fan to reverse and starting the vacuum cleaner. In this way, the fan can blow on the filter screen after reversing to blow up the dust on the filter screen.
- a vacuum cleaner is used to suck out the dust on the filter screen, thereby achieving the cleaning of the filter screen and ensuring the health of the user.
- the service life of the filter screen can be extended, and the cost of frequent replacement of the filter screen can be saved.
- the vacuum cleaner can be arranged at the bottom of the air purifier to facilitate vacuum cleaning of the filter.
- the air inlet of the air purifier of the present invention is provided with a cover plate, and the cover plate is used to open/close the air inlet.
- the air inlet cover can be controlled to close the air inlet.
- the air purifier can prevent dust from entering the inside of the air purifier without the cover; on the other hand, because the cover closes the air inlet, it can prevent dust from overflowing when the filter is cleaned by the vacuum cleaner. Dust efficiency.
- the air purifier filter cleaning method of the present invention further includes: after the filter is vacuumed and cleaned, step S110 is executed again; if the filter does not need to be cleaned, it is determined that the cleaning effect of the filter satisfies Requirements; if the filter screen needs to be cleaned, it is judged that the cleaning effect of the filter screen does not meet the requirements. When the cleaning effect of the filter does not meet the requirements, a filter replacement reminder will be issued. It can be understood by those skilled in the art that although the filter screen can be partially cleaned by vacuuming and cleaning the dirt and extending the service life of the filter screen, the filter screen has a service life after all.
- the present invention is After the filter is vacuumed and cleaned, it can be judged whether the filter is clean by judging again whether the filter needs to be cleaned. If it is judged that it needs to be cleaned, it means that the vacuum cleaning did not clean the filter.
- the poor purification efficiency of the net means that the filter needs to be replaced. In this way, the status of the filter screen can be effectively distinguished, for example, whether the filter screen should be cleaned or replaced, thereby effectively avoiding frequent replacement of the filter screen.
- the step of judging whether the filter screen needs to be cleaned includes: during the operation of the air purifier, detecting the current value of the fan at the current speed; when the current value is lower than the preset current value When the filter screen needs to be cleaned.
- the current value is lower than the preset current value, it can be determined that the filter screen needs to be cleaned.
- the aforementioned preset current value can be selected by a person skilled in the art according to actual conditions.
- the standard current value of the fan at different speeds when the filter screen is not dirty and blocked by the test method when the real-time current value at a certain speed is lower than the standard current value at that speed, the filter screen Dirty blockage begins to appear. As the real-time current value gradually decreases, the filter screen is becoming more and more serious.
- the preset current value ⁇ the standard current value under the same speed is used as the critical value for judging whether the filter screen needs to be cleaned.
- the step of judging whether the filter screen needs to be cleaned includes: obtaining the current PM2.5 value of the air; when PM2.5>the first preset value, judging that the filter screen needs to be cleaned.
- PM2.5 represents the content of fine particulate matter per cubic meter of air.
- the PM2.5 concentration index of 10 micrograms/m3 is 10
- the PM2.5 value of the present invention is the PM2.5 concentration index.
- the first preset value may be determined by those skilled in the art according to actual conditions, such as 120, 150, etc.
- the step of judging whether the filter screen needs to be cleaned includes: acquiring the current PM2.5 value of the air before each operation of the air purifier; when the PM2.5 value exceeds the second preset When the value is set, the operating time of the air purifier is recorded; when the cumulative operating time exceeds the preset operating time, it is judged that the filter needs cleaning.
- this embodiment uses the total cumulative running time of the air purifier in an environment where the PM2.5 value exceeds the second preset value to determine whether the filter needs to be cleaned. As an example, suppose that the second preset value is 150 (PM2.5 concentration index), and the air purifier has been operated for four hours in the PM2.5 environment, and the recorded operating time is 4 hours.
- the preset running time can be determined according to the selected second preset value, for example, a test is performed according to the selected second preset value (such as making the air purifier continue to operate in an environment where PM2.5 exceeds the second preset value until When the filter screen is dirty and blocked until it needs to be cleaned, record the total running time), and determine the preset running time.
- a test is performed according to the selected second preset value (such as making the air purifier continue to operate in an environment where PM2.5 exceeds the second preset value until When the filter screen is dirty and blocked until it needs to be cleaned, record the total running time), and determine the preset running time.
- the second preset value selects any value between 120-150.
- step S110 the step of determining whether the filter needs to be cleaned includes: acquiring an image of the filter; processing the image of the filter to obtain the dust concentration on the filter; when the dust concentration>preset dust concentration When the filter screen needs to be cleaned. Specifically, after the filter screen image is acquired, the filter screen image is first processed to obtain the turbidity of the filter screen.
- This step can be implemented using an image recognition module.
- the image recognition module it should be noted that the image recognition module can use any existing chip used for image processing, as long as it can achieve the purpose of image analysis and processing to obtain turbidity.
- the preset dust can be flexibly set by those skilled in the art according to actual needs in different regions. For example, it can be set according to the following standards: the turbidity below the preset dust concentration represents the degree of clogging of the filter without cleaning; the turbidity above the preset dust concentration represents the degree of clogging of the filter has been It must be cleaned when it arrives. The specific degree of clogging can be determined according to experiments, empirical values, etc., and then a reasonable preset dust concentration is determined. As long as the dust concentration is greater than the preset dust concentration, it is determined that the filter needs to be cleaned.
- the step of judging whether the filter screen needs to be cleaned includes: during the operation of the air purifier, detecting the pressure difference between the leeward side and the windward side of the filter screen; when the pressure difference exceeds When the pressure difference is preset, it is judged that the filter needs to be cleaned.
- the pressure difference is preset, it is judged that the filter needs to be cleaned.
- the preset pressure difference can be selected by a person skilled in the art according to actual conditions.
- the standard pressure difference between the leeward side and the windward side of the filter screen when there is no dirty clogging is obtained through the test method.
- the real-time pressure difference is greater than the standard pressure difference, it means that the filter screen starts to become dirty and clogged.
- the real-time pressure difference gradually increases, and the filter screen becomes more and more serious.
- Those skilled in the art can select a reasonable preset pressure difference (the preset pressure difference ⁇ standard pressure difference) according to different test scenarios and different needs. Critical value.
- the step of judging whether the filter screen needs to be cleaned includes: blowing air on the filter screen to blow up the dust on the filter screen; detecting the concentration of the dust; when the concentration> preset concentration, judging the filter screen Need to be cleaned.
- the preset concentration those skilled in the art can flexibly set it according to actual needs. For example, a critical value of dust concentration that affects the filtration efficiency of the filter can be obtained through experiments, and then a reasonable preset concentration can be determined according to the critical value. Compared with the method of directly detecting the dust on the filter, the present invention can more accurately detect the dust concentration on the filter by blowing on the filter, so as to accurately determine whether the filter needs to be cleaned.
Abstract
一种空气净化器的滤网清洁方法，空气净化器包括风机和吸尘器，风机在正转时用于将外部空气吸入空气净化器以及在反转时用于向滤网吹风；吸尘器用于吸收滤网上的灰尘；空气净化器的滤网清洁方法包括：判断滤网是否需要清洁；在滤网需要清洁的情形下，控制风机反转并启动所述吸尘器。由于风机反转后可以向滤网吹风以将滤网上的灰尘吹起，此时在利用吸尘器将滤网上的灰尘吸出，从而实现了对滤网的清洁，保证了用户的健康。同时还可以延长滤网的使用寿命，节省频繁更换滤网的成本。
Description
本发明属于空气净化技术领域，具体提供一种空气净化器的滤网清洁方法。
空气净化器的核心部件是滤网和风扇，风扇通过转动将外部空气吸入净化器中，然后推动空气穿过滤网进行过滤，最后将过滤后的气体排出，从而实现空气净化。空气净化器的滤网具有一定的使用寿命，随着滤网的使用时间逐渐增长，滤网上积累的污染物会越来越多，污染物会逐渐阻塞滤网，因而滤网对空气的过滤净化效果也会逐渐变差，当滤网对空气的过滤效果达不到标准时，意味着滤网使用寿命已到，需要对空气净化器的滤网进行更换或清理。如果能够及时对滤网进行清理，不仅能够保证用户的健康，还可以延长滤网的使用寿命，节省频繁更换滤网的成本。
因此，本发明提出了一种空气净化器的滤网清洁方法来解决上述问题。
发明内容
为了解决现有技术中的上述问题，即为了实现对滤网的清洁以延长滤网的使用寿命，节省频繁更换滤网的成本，本发明提出了一种空气净化器的滤网清洁方法，所述空气净化器包括风机和吸尘器，所述风机在正转时用于将外部空气吸入所述空气净化器以及在反转时用于向所述滤网吹风；所述吸尘器用于吸收所述滤网上的灰尘；所述空气净化器的滤网清洁方法包括下列步骤：S110、判断所述滤网是否需要清洁；S120、在所述滤网需要清洁的情形下，控制所述风机反转并启动所述吸尘器。
在上述空气净化器的滤网清洁方法的优选实施方式中，步骤S110具体包括：在所述空气净化器运行的过程中，检测所述风机在当前 转速下的电流值；当所述电流值低于预设电流值时，判断所述滤网需要清洁。
在上述空气净化器的滤网清洁方法的优选实施方式中，步骤S110具体包括：获取当前空气的PM2.5值；当PM2.5＞第一预设值时，判断所述滤网需要清洁。
在上述空气净化器的滤网清洁方法的优选实施方式中，步骤S110具体包括：在所述空气净化器每次运行之前，获取当前空气的PM2.5值；当所述PM2.5值超出第二预设值时，记录所述空气净化器的运行时间；当所述运行时间累计超过预设运行时长后，判断所述滤网需要清洁。
在上述空气净化器的滤网清洁方法的优选实施方式中，步骤S110具体包括：获取所述滤网的图像；对所述滤网图像进行处理，得到所述滤网上的灰尘浓度；当所述灰尘浓度＞预设灰尘浓度时，判断所述滤网需要清洁。
在上述空气净化器的滤网清洁方法的优选实施方式中，步骤S110具体包括：在所述空气净化器运行的过程中，检测所述滤网的背风面与迎风面之间的压差；当所述压差超过预设压差时，判断所述滤网需要清洁。
在上述空气净化器的滤网清洁方法的优选实施方式中，步骤S110具体包括：向所述滤网吹风以吹起所述滤网上的灰尘；检测所述灰尘的浓度；当所述浓度＞预设浓度时，判断所述滤网需要清洁。
在上述空气净化器的滤网清洁方法的优选实施方式中，所述空气净化器的进风口设置有盖板，所述盖板用于打开/关闭所述进风口；所述空气净化器滤网清洁方法还包括：在执行步骤S120之前，控制所述进风口盖板关闭所述进风口。
在上述空气净化器的滤网清洁方法的优选实施方式中，在步骤S120之后，所述空气净化器滤网清洁方法还包括：在对所述滤网进行吸尘清洁之后，再次执行步骤S110；如果所述滤网不需要清洁，则判断所述滤网的清洁效果满足要求；如果所述滤网还需要清洁，则判断所述滤网的清洁效果不满足要求。
在上述空气净化器的滤网清洁方法的优选实施方式中，所述空气净化器滤网清洁方法还包括：当所述滤网的清洁效果不满足要求时，发出滤网更换提醒。
本发明在滤网需要进行清洁的情形下，控制风机反转以辅助吸尘器对滤网进行吸尘清洁。由于风机反转后可以向滤网吹风以将滤网上的灰尘吹起，此时在利用吸尘器将滤网上的灰尘吸出，从而实现了对滤网的清洁，保证了用户的健康。同时还可以延长滤网的使用寿命，节省频繁更换滤网的成本。
图1是本发明的空气净化器的滤网清洁方法的主要流程图。
为使本发明的实施例、技术方案和优点更加明显，下面将结合附图对本发明的技术方案进行清楚、完整的描述，显然，所述的实施例是本发明的一部分实施例，而不是全部实施例。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。
本发明的空气净化器包括风机和吸尘器，风机在正转时用于将外部空气吸入空气净化器以及在反转时用于向滤网吹风；吸尘器用于吸收滤网上的灰尘。
参照图1，图1是本发明的空气净化器的滤网清洁方法的主要流程图。如图1所示，本发明的空气净化器的滤网清洁方法包括下列步骤：S110、判断滤网是否需要清洁；S120、在滤网需要清洁的情形下，控制风机反转并启动吸尘器。这样一来，风机反转后可以向滤网吹风以将滤网上的灰尘吹起，此时在利用吸尘器将滤网上的灰尘吸出，从而实现了对滤网的清洁，保证了用户的健康。同时还可以延长滤网的使用寿命，节省频繁更换滤网的成本。作为示例，该吸尘器可以设置在空气净化器的底部，以便于对滤网进行吸尘清洁。
优选地，本发明的空气净化器的进风口设置有盖板，盖板用于打开/关闭进风口。在执行步骤S120之前，可以控制进风口盖板关闭进风口。一方面，在空气净化器在不使用盖板可以防止灰尘进入空气净化器内部；另一方面，由于盖板关闭进风口，因此在利用吸尘器对滤网吸尘清洁时可以防止灰尘溢出，提示吸尘效率。
进一步，在步骤S120之后，本发明的空气净化器滤网清洁方法还包括：在对滤网进行吸尘清洁之后，再次执行步骤S110；如果滤网不需要清洁，则判断滤网的清洁效果满足要求；如果滤网还需要清洁，则判断滤网的清洁效果不满足要求。当滤网的清洁效果不满足要求时，发出滤网更换提醒。本领域技术人员可以理解的是，对滤网进行吸尘清洁虽然能够部分清除掉滤网的污浊物，延长滤网的使用寿命，但是滤网终究还是有使用寿命的，因此，本发明在对滤网进行吸尘清洁之后，通过再次判断滤网是否需要清洁的方式可以判断该滤网是否清洁干净，如果判断为还需要进行清洁，说明吸尘清洁没有将滤网清洁干净，此时说明滤网的净化效率较差，即说明滤网需要进行更换。这样一来，可以有效区分出滤网的状态，例如应该对滤网清洁还是对滤网进行更换，从而有效避免频繁更换滤网。
在一种具体的实施方式中，步骤S110，判断滤网是否需要清洁的步骤包括：在空气净化器运行的过程中，检测风机在当前转速下的电流值；当电流值低于预设电流值时，判断滤网需要清洁。本领域技术人员可以理解的是，风机在相同转速下的电流值越小说明滤网越脏，当电流值低于预设电流值时，可以判断滤网需要清洁。上述的预设电流值可以由本领域技术人员根据实际情况选择合理的值。例如，通过试验方式获取滤网在未出现脏堵的情形下的风机在不同转速下的标准电流值，当某一转速下的实时电流值低于该转速下的标准电流值时，说明滤网开始出现脏堵，随着实时电流值的逐渐减小，滤网的脏堵也越来越严重，本领域技术人员可以根据不同试验场景以及不同需求选择一个合理的预设电流值(该同一转速下的预设电流值≤同一转速下的标准电流值)作为判断滤网是否需要清洁的临界值。
在一种具体的实施方式中，步骤S110，判断滤网是否需要清洁的步骤包括：获取当前空气的PM2.5值；当PM2.5＞第一预设值时，判断滤网需要清洁。具体地，PM2.5表示每立方米空气中细微颗粒物的含量，如10微克/立方米的PM2.5浓度指标为10，本发明的PM2.5值为PM2.5浓度指标。本领域技术人员可以理解的是，滤网是否脏堵或者多长时间会脏，这与当前的空气质量(PM2.5值)有很大关系，当空气质量较差时，滤网脏的快；当空气质量较好时，滤网脏的慢。因此，本发明根据空气质量 确定滤网是否需要自清洁。该第一预设值可以由本领域技术人员根据实际情况确定，例如120、150等。
在一种具体的实施方式中，步骤S110，判断滤网是否需要清洁的步骤包括：在空气净化器每次运行之前，获取当前空气的PM2.5值；当PM2.5值超出第二预设值时，记录空气净化器的运行时间；当运行时间累计超过预设运行时长后，判断滤网需要清洁。具体地，该实施例利用空气净化器在PM2.5值超出第二预设值的环境中的总累计运行时间来判断滤网是否需要清洁。作为示例，假设该第二预设值为150(PM2.5浓度指标)，空气净化器在该PM2.5的环境中运行了四个小时，则记录运行时间为4小时。当累计记录的空气净化器在PM2.5超过150的环境中运行时长超过预设运行时长后，可以判断滤网较脏，即滤网需要清洁。该预设运行时长可以根据选择的第二预设值来确定，例如根据选择的第二预设值进行试验(如使空气净化器在PM2.5超出第二预设值的环境中持续运行直至滤网的脏堵达到需要清洁时为止，记录总的运行时长)，确定该预设运行时长。本领域技术人员可以根据实际情况选择合理的第二预设值，例如第二预设值选择120-150之间的任意值。
在一种具体的实施方式中，步骤S110，判断滤网是否需要清洁的步骤包括：获取滤网的图像；对滤网图像进行处理，得到滤网上的灰尘浓度；当灰尘浓度＞预设灰尘浓度时，判断滤网需要清洁。具体地，当获取到滤网图像后，首先对该滤网图像进行处理，得到滤网的污浊度。该步骤可以利用图像识别模块实现。关于图像识别模块需要说明的是，该图像识别模块可以选用任何已有的用于图像处理的芯片，只要能够实现对图像分析处理以获取污浊度的目的即可。举例而言，可以将获取到的滤网图像与干净的滤网(即未覆盖灰尘等污浊物)图像进行对比，得到当前滤网图像上的灰尘量，然后按照设定算法计算该灰尘量的污浊度。本领域技术人员也可以采用其他任意合理的算法来计算滤网上的污浊度，在此不再进行详细说明。另外，该预设灰尘可以由本领域技术人员不同地区的实际需要进行灵活的设定。例如，可以按照如下标准设定：在该预设灰尘浓度以下的污浊度代表滤网的脏堵程度还不需要进行清洁；在该预设灰尘浓度以上的污浊度代表滤网的脏堵程度已经到了必须进行清洁。而具体的脏堵程度可以根据实验、经验值等方式确定， 进而确定合理的预设灰尘浓度，只要灰尘浓度大于该预设灰尘浓度即判断滤网需要清洁。
在一种具体的实施方式中，步骤S110，判断滤网是否需要清洁的步骤包括：在空气净化器运行的过程中，检测滤网的背风面与迎风面之间的压差；当压差超过预设压差时，判断滤网需要清洁。本领域技术人员可以理解的是，滤网的背风面与迎风面之间的压差越大说明滤网越脏，当该压差超过预设压差时，说明滤网已经很脏，需要进行清洁。该预设压差可以由本领域技术人员根据实际情况选择合理的值。例如，通过试验方式获取滤网在未出现脏堵的情形下的背风面与迎风面之间的标准压差，当实时压差大于该标准压差时，说明滤网开始出现脏堵，随着实时压差逐渐增大，滤网的脏堵也越来越严重，本领域技术人员可以根据不同试验场景以及不同需求选择一个合理的预设压差(该预设压差≥标准压差)作为临界值。
在一种具体的实施方式中，步骤S110，判断滤网是否需要清洁的步骤包括：向滤网吹风以吹起滤网上的灰尘；检测灰尘的浓度；当浓度＞预设浓度时，判断滤网需要清洁。关于预设浓度，本领域技术人员可以根据实际需要灵活地设置，例如，可以通过试验方式获得灰尘浓度影响到滤网过滤效率的临界值，然后根据该临界值确定合理的预设浓度。相对于直接检测滤网上灰尘的方式，本发明通过向滤网吹风的方式可以更准确地检测滤网上的灰尘浓度，从而准确地判断出滤网是否需要清洁。
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。
Claims (10)
- 一种空气净化器的滤网清洁方法，其特征在于，所述空气净化器包括风机和吸尘器，所述风机在正转时用于将外部空气吸入所述空气净化器以及在反转时用于向所述滤网吹风；所述吸尘器用于吸收所述滤网上的灰尘；所述空气净化器的滤网清洁方法包括下列步骤：S110、判断所述滤网是否需要清洁；S120、在所述滤网需要清洁的情形下，控制所述风机反转并启动所述吸尘器。
- 根据权利要求1所述的空气净化器的滤网清洁方法，其特征在于，步骤S110具体包括：在所述空气净化器运行的过程中，检测所述风机在当前转速下的电流值；当所述电流值低于预设电流值时，判断所述滤网需要清洁。
- 根据权利要求1所述的空气净化器的滤网清洁方法，其特征在于，步骤S110具体包括：获取当前空气的PM2.5值；当PM2.5＞第一预设值时，判断所述滤网需要清洁。
- 根据权利要求1所述的空气净化器的滤网清洁方法，其特征在于，步骤S110具体包括：在所述空气净化器每次运行之前，获取当前空气的PM2.5值；当所述PM2.5值超出第二预设值时，记录所述空气净化器的运行时间；当所述运行时间累计超过预设运行时长后，判断所述滤网需要清洁。
- 根据权利要求1所述的空气净化器的滤网清洁方法，其特征在于，步骤S110具体包括：获取所述滤网的图像；对所述滤网图像进行处理，得到所述滤网上的灰尘浓度；当所述灰尘浓度＞预设灰尘浓度时，判断所述滤网需要清洁。
- 根据权利要求1所述的空气净化器的滤网清洁方法，其特征在于，步骤S110具体包括：在所述空气净化器运行的过程中，检测所述滤网的背风面与迎风面之间的压差；当所述压差超过预设压差时，判断所述滤网需要清洁。
- 根据权利要求1所述的空气净化器的滤网清洁方法，其特征在于，步骤S110具体包括：向所述滤网吹风以吹起所述滤网上的灰尘；检测所述灰尘的浓度；当所述浓度＞预设浓度时，判断所述滤网需要清洁。
- 根据权利要求1至7中任一项所述的空气净化器的滤网清洁方法，其特征在于，所述空气净化器的进风口设置有盖板，所述盖板用于打开/关闭所述进风口；所述空气净化器滤网清洁方法还包括：在执行步骤S120之前，控制所述进风口盖板关闭所述进风口。
- 根据权利要求1至7中任一项所述的空气净化器滤网清洁方法，其特征在于，在步骤S120之后，所述空气净化器滤网清洁方法还包括：在对所述滤网进行吸尘清洁之后，再次执行步骤S110；如果所述滤网不需要清洁，则判断所述滤网的清洁效果满足要求；如果所述滤网还需要清洁，则判断所述滤网的清洁效果不满足要求。
- 根据权利要求9所述的空气净化器的滤网清洁方法，其特征在于，所述空气净化器滤网清洁方法还包括：当所述滤网的清洁效果不满足要求时，发出滤网更换提醒。
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