WO2018040616A1 - 基于单个压力传感器的空调脏堵检测方法、系统和空调器 - Google Patents

基于单个压力传感器的空调脏堵检测方法、系统和空调器 Download PDF

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Publication number
WO2018040616A1
WO2018040616A1 PCT/CN2017/084605 CN2017084605W WO2018040616A1 WO 2018040616 A1 WO2018040616 A1 WO 2018040616A1 CN 2017084605 W CN2017084605 W CN 2017084605W WO 2018040616 A1 WO2018040616 A1 WO 2018040616A1
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Prior art keywords
dust filter
dirty
pressure
value
leeward side
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PCT/CN2017/084605
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English (en)
French (fr)
Inventor
袁光
李洪涛
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广东美的制冷设备有限公司
美的集团股份有限公司
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Priority claimed from CN201610797870.5A external-priority patent/CN106403167B/zh
Priority claimed from CN201610789763.8A external-priority patent/CN106247563B/zh
Application filed by 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Publication of WO2018040616A1 publication Critical patent/WO2018040616A1/zh

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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
    • 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

Definitions

  • the invention relates to the field of air conditioning control, in particular to a method, a system and an air conditioner for detecting an air conditioner dirty block based on a single pressure sensor.
  • the dust filter and the heat exchanger occupy an important position in the air circulation of the air conditioner indoor unit.
  • the air first flows through the dust filter net, and then passes through the heat exchanger to form a wind circulation passage, and the air flows in the air passage to bring out the heat in the heat exchanger, thereby Realize the cooling or heating of indoor space.
  • these two components are extremely easy to accumulate dust and affect the air circulation of the air conditioner indoor unit. Whether the heat exchanger is dirty or the dust filter is dirty, it will have a great impact on the air conditioning performance.
  • the air flow in the air duct is not enough, which will cause the heat in the heat exchanger to not be fully dissipated, resulting in the heat exchanger temperature decreasing continuously in the cooling mode; As the temperature of the heat exchanger continues to rise, the continuous decrease or rise in temperature can cause damage to the heat exchanger and other components, or trigger the air conditioning protection mechanism to stop operation.
  • the dirty heat of the indoor unit heat exchanger or the filter dust net will also make the air conditioner air with a dusty smell, which will make the user experience worse.
  • many bacteria will parasitize among them, and these bacteria will cause harm to human health with the air conditioner blowing out of the indoor space.
  • the air filter dirty plugging detection method of the traditional dust filter net or the air conditioner indoor unit has a fan power detecting method and a double side differential pressure detecting method.
  • the former method belongs to indirect detection.
  • the principle is that the fan power will vary with the degree of dirty plugging.
  • due to the complexity of the air conditioning system there are many factors affecting the power of the fan.
  • In addition to dirty plugging there are many other dominant and hidden factors. Dominant factors such as grid voltage fluctuations and air deflector angles can be compensated and corrected, but there are many hidden factors that cannot be compensated. This is the biggest reason for the inaccuracy of the test results.
  • the second detection method is direct measurement, and the detection is accurate, but two pressure sensors are required to simultaneously measure the pressure on both sides, and the cost is relatively high.
  • the invention provides a method, a system and an air conditioner for detecting an air conditioner dirty block based on a single pressure sensor, which solves the above technical problems.
  • a method for detecting an air conditioning dirty block based on a single pressure sensor comprising the steps of:
  • Step 1 obtaining the pressure value of the leeward side of the dust filter under the first fan speed, or the pressure value of the leeward side of the heat exchanger at the first fan speed;
  • Step 2 Obtain a corresponding dust filter dirty plugging level according to the first fan speed and the leeward side pressure value of the dust filter, or obtain a corresponding dirty level of the indoor unit according to the first fan speed and the leeward side pressure value of the heat exchanger.
  • an air conditioning dirty block detection system based on a single pressure sensor, including a first acquisition module and a second acquisition module.
  • the first obtaining module is configured to obtain a pressure value of the leeward side of the dust filter under the first fan speed, or a pressure value of the leeward side of the heat exchanger at the first fan speed;
  • the second acquiring module is configured to obtain a corresponding dust filter dirty plugging level according to the first fan speed and the leeward side pressure value of the dust filter, or obtain a corresponding indoor dirty block according to the first fan speed and the leeward side pressure value of the heat exchanger. grade.
  • the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the above-described single pressure sensor based air conditioning dirty block detection method.
  • the present invention also provides an air conditioner comprising the air pressure dirty block detecting system based on a single pressure sensor as described above.
  • the invention has the beneficial effects that the dirty plug detecting method and the detecting system of the invention comprehensively consider the fan rotating speed and the leeward side pressure value of the dust filter net when acquiring the dirty plugging level of the dust filter, and comprehensively consider the fan rotating speed when acquiring the dirty level of the indoor unit.
  • the detection result is accurate, the detection method is simple, and only one pressure sensor is needed, and the detection cost is low.
  • FIG. 1 is a schematic flow chart of a method for detecting a dirty blockage of an air conditioner based on a single pressure sensor according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of an air conditioner dirty block detecting system based on a single pressure sensor according to an embodiment of the present invention
  • FIG. 3 is a schematic flow chart of a method for detecting a dirty blockage of an air conditioner based on a single pressure sensor according to another embodiment of the present invention
  • FIG. 4 is a schematic structural view of a dirty pressure detecting system for an air conditioner based on a single pressure sensor according to another embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a method for detecting a dirty blockage of an air conditioner based on a single pressure sensor according to still another embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of an air conditioner dirty block detecting system based on a single pressure sensor according to still another embodiment of the present invention.
  • FIG. 7 is a schematic flow chart of a method for detecting a dirty block of an air conditioner based on a single pressure sensor according to still another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an air conditioner dirty block detecting system based on a single pressure sensor according to still another embodiment of the present invention.
  • FIG. 9 is a block schematic view of an air conditioner in accordance with one embodiment of the present invention.
  • the invention provides a method for detecting a dirty blockage of an air conditioner based on a single pressure sensor, comprising the following steps:
  • Step 1 obtaining the pressure value of the leeward side of the dust filter under the first fan speed, or the pressure value of the leeward side of the heat exchanger at the first fan speed;
  • Step 2 Obtain a corresponding dust filter dirty plugging level according to the first fan speed and the leeward side pressure value of the dust filter, or obtain a corresponding dirty level of the indoor unit according to the first fan speed and the leeward side pressure value of the heat exchanger.
  • the present invention can detect the dirty plugging degree of the dust filter net, and can also detect the dirty plugging degree of the air conditioner indoor unit, and the dirty plugging degree of the air conditioner indoor unit is the overall dirty plugging degree of the dust filter net and the heat exchanger.
  • the difference between the two is that the position of the pressure sensor is different.
  • the pressure sensor When it is necessary to detect the dirty plugging degree of the dust filter, the pressure sensor is disposed between the dust filter net and the heat exchanger, and the dirty plugging level of the dust filter net is obtained by detecting the pressure on the leeward side of the dust filter net and the first fan speed;
  • the pressure sensor When detecting the dirty degree of the indoor unit, the pressure sensor is disposed on the leeward side of the heat exchanger, and the dirty plug level of the indoor unit is obtained by detecting the pressure on the leeward side of the heat exchanger and the first fan speed.
  • the method for detecting the dirty level of the indoor unit may be modified by referring to the steps of the embodiment.
  • the invention can adopt two methods to obtain the dirty plugging level of the dust filter, one is to detect the dirty plug level of the dust filter at the current fan speed, and the other is to adjust the current fan speed to the target fan speed, and then calculate the target fan speed.
  • the dust filter level of the dust filter is as follows. The above two methods are described in detail below.
  • FIG. 1 is a schematic flowchart of a method for detecting a dirty blockage of an air conditioner based on a single pressure sensor according to an embodiment of the present invention, which includes the following steps:
  • Step 1 Obtain the current fan speed and the pressure value of the leeward side of the current dust filter
  • Step 2 According to the current fan speed and the pressure value of the leeward side of the current dust filter, the corresponding dust filter level of the dust filter is obtained.
  • the current fan speed is 960r/min directly collected by the speed sensor, and the pressure value of the leeward side of the dust filter is collected by the pressure sensor.
  • a method of collecting the average value may be adopted, specifically: maintaining the current fan speed unchanged, and continuously collecting the leeward side of the dust filter through the pressure sensor. The plurality of pressure values are averaged to obtain the leeward side pressure value of the dust filter.
  • the maximum value and the minimum value may be removed from the plurality of pressure values of the leeward side of the dust filter continuously collected by the pressure sensor, and the average value may be taken to obtain the leeward side pressure value of the dust filter. For example.
  • step 2 of the embodiment by querying the pre-established dirty filter level of the dust filter and the first correspondence table of different fan speeds and pressure values of the leeward side of the dust filter, the pressure value of the leeward side of the current dust filter is obtained at the current fan speed.
  • the dust filter is dirty.
  • the leeward side pressure of the inlet filter dust net is not only related to the dirty plugging degree of the filter dust net, but also related to the fan speed. The larger the fan speed, the more serious the dirty plugging, and the smaller the pressure on the leeward side of the filter net, so when assessing the dirty plug level of the filter net Only by considering the fan speed and the leeward side pressure of the filter net, the dust filter level of the filter net will be more accurate.
  • the first correspondence table is obtained in the process of performing data testing on the air conditioner, and is already solidified in the air conditioning running program before the air conditioner leaves the factory to facilitate querying and using.
  • establishing the first correspondence table includes the following steps:
  • the fan's operable speed range is divided into m speed ranges dl ⁇ dm according to the preset speed span; m is determined by the operable speed range and the speed span of the fan, and the speed span ranges from 30 to 120r/min. If the value is too small, the measured pressure value does not change. If the value is too large, the accuracy of the final dirty plug detection result will be affected.
  • the pressure value of the leeward side of the dust filter corresponding to the rotation speed value in the middle point of each speed interval is obtained again, and the leeward side of the dust filter net is The pressure value is set to a second value; the first value and the second value form a range of pressure values of the leeward side of the dust filter corresponding to the rotation speed interval;
  • the pressure value range of the leeward side of the dust filter is equally divided according to a preset number of dirty plugging levels, and a range of pressure values of the leeward side of the dust filter corresponding to the dirty plugging level of each dust filter is obtained.
  • the number of the averaging points can be arbitrarily selected as needed, and only a certain span of the pressure value in each dirty plugging level can be satisfied.
  • the range of pressure values of the leeward side of the dust filter is equally divided. There are 4 small ranges, each of which corresponds to a dust filter level of dust filter, which is divided into 4 levels.
  • the minimum limit value of the fan running speed is 600r/min
  • the maximum limit value is 1199r/min
  • the speed span is 100r/min
  • m is 6, that is, the six speed ranges of d1 to d6 are formed, each of which
  • the dirty filter level of the dust filter corresponding to the speed interval is divided into four levels, which can form the first correspondence table shown in Table 1 below:
  • Table 1 The first correspondence table of different fan speed intervals
  • the current fan speed is 960r/min, which is in the d4 interval; if P42 ⁇ pO ⁇ P43, the dirty filter level of the dust filter can be obtained at the level of z3, and then the air conditioner can be air-conditioned according to the dirty plug level of the dust filter. Take the appropriate controls.
  • the second correspondence table for acquiring the dirty plug level of the indoor unit may be established according to the foregoing method, and specifically includes the following steps:
  • the fan operating speed range is divided into a plurality of speed intervals according to a preset speed span, wherein the speed span is 30 to 120 r/min;
  • the pressure value of the leeward side of the heat exchanger corresponding to the speed value at the midpoint of each speed interval is obtained again, and the pressure value of the leeward side of the heat exchanger is set to a fourth value, wherein The third value and the fourth value form a range of pressure values of the leeward side of the heat exchanger corresponding to the speed range;
  • the pressure value range of the leeward side of the heat exchanger is equally divided according to a preset number of dirty plugging levels, and a range of pressure values of the leeward side of the heat exchanger corresponding to each dirty block level of the indoor unit is obtained.
  • the level of the dirty state of the indoor unit corresponding to the current fan speed is obtained.
  • the dirty plug level is displayed through the display panel
  • the dirty plug level is displayed through the display panel, and the buzzer sounds or the intelligent voice prompt is used at the same time;
  • the dirty plug level is displayed through the display panel, and the buzzer is used to buzzer in the short-time and multiple times when the air conditioner is turned on and/or running. Prompt and/or perform intelligent voice prompts and drive the cleaning device for automatic cleaning;
  • the dirty plug level is displayed through the display panel, and the buzzer is used to make a buzzer in the short-time and multiple times when the air conditioner is turned on and/or running. And/or intelligent voice prompting, and controlling the air conditioner to stop running; in the control mode, the higher the dirty blocking level, the more serious the dust filter or the dirty function of the indoor unit.
  • the following control may be performed: after the first preset time, the dust filter dirty level or the indoor unit dirty is detected again. Blocking level, when the dust filter is dirty or the dirty level of the indoor unit is not decreased, the fan speed is increased and the air volume is automatically compensated.
  • the automatic steps for air volume include the following steps:
  • the wind turbine compensation amount corresponding to the current dirty plugging level is obtained by querying a mapping table of the pre-established dust filter level and the fan speed compensation amount. Or pre-establish the calculation formula of the fan speed compensation amount, and substitute the current dirty plug level into the corresponding fan speed compensation amount calculation formula to generate the wind turbine speed compensation amount corresponding to the current dirty plug level.
  • a schematic diagram of a structure of a single pressure sensor-based air conditioning dirty block detection system corresponding to a method according to an embodiment of the present invention includes a first acquisition module and a second acquisition module, and the first acquisition module is configured to acquire The current fan speed and the current damper side pressure value of the dust filter are used to obtain the current fan speed and the current heat exchanger leeward side pressure value; the second acquisition module is configured to obtain the current fan speed and the current dust filter leeward side pressure value.
  • Corresponding dust filter level is used to obtain the corresponding dirty level of the indoor unit according to the current fan speed and the current chiller side pressure value of the heat exchanger.
  • the air conditioning dirty block detection system of the embodiment further includes a control module, wherein the control module is configured to adopt different control modes for the air conditioner according to different dust filter dirty plugging levels or different indoor air dirty blocking levels; and/or For detecting the dirty plugging level of the dust filter or the dirty level of the indoor unit after the first preset time, when the dust filter dirty level or the dirty level of the indoor unit is not decreased, the fan speed is increased, and the air volume is automatically compensated. .
  • the first acquiring module comprises: a speed collecting unit for collecting the current fan speed; and a first pressure sensor disposed between the dust filter and the heat exchanger for continuously collecting the dust of the filter net a pressure value on the side, or a second pressure sensor disposed on the leeward side of the heat exchanger for continuously collecting the pressure value on the leeward side of the heat exchanger; and a calculation unit for applying a plurality of pressures on the leeward side of the continuously collected filter net
  • the value is directly taken as the average value or the maximum value and the minimum value are removed, and the average value is taken to obtain the pressure value of the leeward side of the dust filter or the multiple pressure values of the leeward side of the continuously collected heat exchanger are directly taken as the average value or the maximum value and the minimum value are removed.
  • the average value is taken to obtain the leeward side pressure value of the heat exchanger.
  • the second obtaining module includes a first storage unit, configured to store a pre-established dirty filter level of the dust filter and a first correspondence table of different fan speeds and pressure values of the leeward side of the dust filter, or for storing the pre-established indoor unit. Dirty blockage, etc. a second correspondence table between the grading and the damper side pressure of the heat exchanger; the first query unit is configured to query the first correspondence table to obtain the pressure value of the leeward side of the current dust filter at the current fan speed The dirty dust filter level of the dust filter is used to query the second correspondence table to obtain the dirty level of the indoor unit corresponding to the pressure value of the leeward side of the current heat exchanger at the current fan speed.
  • the dirty plug detecting method and the detecting system of the invention comprehensively consider the fan rotating speed and the leeward side pressure value of the dust filter net when acquiring the dirty plugging level of the dust filter, and comprehensively consider the fan rotating speed and the leeward side pressure of the heat exchanger when acquiring the dirty level of the indoor unit.
  • the detection result is accurate, the detection method is simple, and only one pressure sensor is needed, and the detection cost is low.
  • a method for detecting a dirty plug of a dust filter based on a single pressure sensor includes the following steps:
  • Step 1 adjust the current fan speed to a preset target fan speed, and obtain a pressure value of the leeward side of the dust filter under the target fan speed;
  • Step 2 Obtain a corresponding dirty dust filter level according to the pressure value of the leeward side of the dust filter.
  • the current fan speed of the fan is first adjusted to the target fan speed, for example, 960r/min, and then the pressure value of the leeward side of the dust filter is collected by the pressure sensor.
  • the target fan speed for example, 960r/min
  • the pressure value of the leeward side of the dust filter is collected by the pressure sensor.
  • a method of collecting the average value may be adopted, specifically: maintaining the target fan speed of 960 r/min, and continuously collecting the dust through the pressure sensor. The plurality of pressure values on the leeward side of the net are averaged to obtain the leeward side pressure value of the dust filter.
  • the maximum value and the minimum value of the plurality of pressure values on the leeward side of the dust filter continuously collected by the pressure sensor may be used to obtain the leeward side pressure value of the dust filter net, and no detailed example is given here. .
  • the dirty dust filter level corresponding to the pressure value pO of the leeward side of the dust filter is obtained.
  • the third correspondence table is obtained during the data testing process of the air conditioner, and is already solidified in the air conditioning running program before the air conditioner leaves the factory to facilitate query and use.
  • the fan speed to the target fan speed, it is only necessary to obtain the corresponding relationship between the pressure value of the leeward side of the dust filter and the dirty plug level of the dust filter under the target fan speed during the data test process.
  • the present invention does not need to divide the operating speed of the fan into a plurality of rotational speed intervals, and simply measures the dust filter corresponding to each rotational speed interval by the pressure value of the leeward side of the dust filter corresponding to the rotational speed value at the midpoint of each rotational speed interval. Blocking the level, so the test results obtained will be more accurate.
  • the establishing the third correspondence table includes the following steps:
  • the pressure value of the leeward side of the dust filter corresponding to the target fan speed is obtained again, and the pressure value of the leeward side of the dust filter is set to a sixth value, wherein the fifth value and the sixth value are The value forms a pressure range of the leeward side of the dust filter corresponding to the target fan speed;
  • the pressure value range of the leeward side of the dust filter is equally divided according to a preset number of dirty plugging levels, and a range of pressure values of the leeward side of the dust filter corresponding to each dirty dust filter level of the dust filter is obtained.
  • the number of the averaging points can be arbitrarily selected according to the requirements, and only a certain span of the pressure value range in each dirty plugging level can be satisfied.
  • the range of the leeward side pressure value of the dust filter net is equally divided. For 4 small ranges, each small range corresponds to a dust filter level of dust filter, which is divided into 4 levels.
  • the target fan speed is 960r/min
  • the pressure value of the leeward side of the dust filter is detected as pO
  • the corresponding dust filter level of the dust filter is divided into 4 levels, which can form a third correspondence table as shown in Table 2 below. :
  • the pressure value pO of the leeward side of the dust filter net is between P11 and P12, and the dirty plugging level of the dust filter net can be obtained as z2 level, and then the air conditioner can be correspondingly controlled according to the dirty plugging level of the dust filter net.
  • the fourth correspondence table for acquiring the dirty blocking level of the indoor unit may be established according to the above method, and specifically includes the following steps:
  • the pressure value of the leeward side of the heat exchanger corresponding to the target fan speed is obtained again, and the pressure value of the leeward side of the heat exchanger is set to an eighth value, wherein the seventh value and the eighth value The value forms a pressure range of the leeward side of the heat exchanger corresponding to the target fan speed;
  • the pressure value range of the leeward side of the heat exchanger is equally divided according to the preset number of dirty plugging levels, and the pressure value range of the leeward side of the heat exchanger corresponding to the dirty plug level of each indoor unit is obtained under the target fan speed.
  • the dirty state of the indoor unit corresponding to the pressure value of the leeward side of the heat exchanger calculated in step 1 is obtained.
  • a plurality of target fan speeds may be preset, and the third correspondence table includes a correspondence relationship between the pressure value of the leeward side of the dust filter and the dirty plug level of the dust filter under each target fan speed.
  • the fourth correspondence table includes the correspondence between the pressure value of the leeward side of the heat exchanger and the dirty level of the indoor unit under each target fan speed.
  • FIG. 4 is a schematic structural diagram of a single pressure sensor-based air conditioning dirty block detection system corresponding to the method of another embodiment of the present invention, including a rotation speed adjustment module, a first acquisition module, and a second acquisition module, the rotation speed
  • the adjusting module is configured to adjust the current fan speed to a preset target fan speed
  • the first acquiring module is configured to obtain a leeward side pressure value of the dust filter or a leeward side pressure value of the heat exchanger under the target fan speed
  • the obtaining module is configured to obtain a corresponding dust filter dirty level according to the leeward side pressure value of the dust filter, or obtain a corresponding dirty level of the indoor unit according to the pressure value of the leeward side of the heat exchanger.
  • the embodiment further includes a control module, wherein the control module is configured to adopt different control modes for the air conditioner according to different dust filter dirty plugging levels or different indoor air dirty blocking levels; and/or for passing the first After the preset time, the dust filter level or the dirty level of the indoor unit is detected again, and when the dust filter level is dirty or the dirty level of the indoor unit is not decreased, the fan speed is increased and the air volume is automatically compensated.
  • the control module is configured to adopt different control modes for the air conditioner according to different dust filter dirty plugging levels or different indoor air dirty blocking levels; and/or for passing the first After the preset time, the dust filter level or the dirty level of the indoor unit is detected again, and when the dust filter level is dirty or the dirty level of the indoor unit is not decreased, the fan speed is increased and the air volume is automatically compensated.
  • the second acquiring module comprises: a first pressure sensor disposed between the dust filter net and the heat exchanger, configured to continuously collect the pressure value of the leeward side of the dust filter net, or is disposed in the heat exchanger
  • the second pressure sensor on the leeward side is used for continuously collecting the pressure value on the leeward side of the heat exchanger;
  • the calculation unit is configured to directly take the average value or remove the maximum value and the minimum value of the plurality of pressure values on the leeward side of the continuously collected dust filter net.
  • the average value is taken to obtain the leeward side pressure value of the dust filter net or the average pressure value of the continuously collected heat exchanger leeward side is taken as the average value or the maximum value and the minimum value are removed, and then the average value is taken to obtain the heat exchanger leeward. Side pressure value.
  • the second obtaining module includes a first storage unit, configured to store a third correspondence table of the dust filter network dirty plugging level and the dust network leeward side pressure value of the pre-established target fan speed, or for storing the pre-established target fan a fourth correspondence table between the dirty state of the indoor unit and the pressure value of the leeward side of the heat exchanger; the first query unit is configured to query the third correspondence table, and obtain the pressure value of the leeward side of the dust filter calculated in step 1.
  • the dust filter level corresponding to the dust filter is used, or the fourth correspondence table is used to query, and the pressure value of the leeward side of the heat exchanger calculated in step 1 is corresponding to the dirty level of the indoor unit at the target fan speed.
  • the dirty plug detecting method and the detecting system of the invention comprehensively consider the fan rotating speed and the leeward side pressure value of the dust filter net when acquiring the dirty plugging level of the dust filter, and comprehensively consider the fan rotating speed and the leeward side pressure of the heat exchanger when acquiring the dirty level of the indoor unit.
  • the detection result is accurate, the detection method is simple, and only one pressure sensor is needed, and the detection cost is low.
  • the invention also provides a method for detecting the dirty blockage of an air conditioner based on a single pressure sensor, comprising the following steps:
  • Step 1 obtaining the pressure value of the leeward side of the dust filter under the first fan speed, or the pressure value of the leeward side of the heat exchanger at the first fan speed;
  • Step 2 obtaining a corresponding windward side pressure value of the dust filter according to the first fan speed
  • Step 3 calculating a first pressure difference between the pressure value of the leeward side of the dust filter and the pressure value of the windward side of the dust filter, or a second pressure difference between the pressure value of the leeward side of the heat exchanger and the pressure value of the windward side of the dust filter;
  • Step 4 Acquire a corresponding dust filter dirty block level according to the first pressure difference and the first fan speed; or obtain a corresponding indoor machine dirty block level according to the second pressure difference and the first fan speed.
  • the invention can detect the dirty blockage degree of the filter dust net, and can also detect the dirty block degree of the air conditioner indoor unit, and the dirty block degree of the air conditioner indoor unit is the overall dirty block degree of the filter dust net and the heat exchanger.
  • the difference between the two is that the position of the pressure sensor is different.
  • the pressure sensor is disposed between the dust filter net and the heat exchanger, and the first pressure difference on both sides of the dust filter net is obtained by detecting the pressure on the leeward side of the dust filter net, according to the first pressure difference.
  • the dirty plugging level of the dust filter when it is necessary to detect the dirty plugging degree of the indoor unit, set the pressure sensor on the leeward side of the heat exchanger, and obtain the second side of the entire indoor unit by detecting the pressure on the leeward side of the heat exchanger.
  • the pressure difference that is, the second pressure difference between the windward side of the dust filter net and the leeward side of the heat exchanger, acquires the dirty plugging level of the indoor unit according to the second pressure difference.
  • the method for detecting the dirty level of the indoor unit can be modified by referring to the description of the embodiment.
  • the invention can adopt two methods to obtain the dirty plugging level of the dust filter, one is to detect the dirty plug level of the dust filter at the current fan speed, and the other is to adjust the current fan speed to the target fan speed, and then calculate the target fan speed.
  • the dust filter level of the dust filter is as follows. The above two methods are described in detail below.
  • a schematic flowchart of a method for detecting a dirty blockage of an air conditioner based on a single pressure sensor includes the following steps:
  • Step 1 Obtain the current fan speed and the pressure value of the leeward side of the dust filter
  • Step 2 Acquire a corresponding windward side pressure value of the dust filter according to the current fan speed
  • Step 3 calculating a first pressure difference between the pressure value of the leeward side of the dust filter net and the pressure value of the windward side of the dust filter;
  • Step 4 Acquire a corresponding dirty dust filter level according to the first pressure difference and the current fan speed.
  • the current fan speed is 1080 r/min directly collected by the speed sensor, and the pressure value of the leeward side of the filter net is collected by the pressure sensor as p0.
  • a method of collecting the average value may be adopted, specifically: maintaining the current fan speed unchanged, and continuously collecting the leeward side of the dust filter through the pressure sensor. The average value of the plurality of pressure values is obtained as the leeward side pressure value of the dust filter.
  • the maximum value and the minimum value of the plurality of pressure values of the leeward side of the dust filter continuously collected by the pressure sensor can be removed, and the average value of the leeward side of the dust filter can be obtained, and detailed examples are not given here.
  • step 2 of this embodiment the obtaining the corresponding windward side pressure value of the dust filter according to the first fan speed includes:
  • the windward side pressure value of the dust filter corresponding to the current fan speed is obtained by querying the fifth correspondence table between the windward side pressure value and the fan speed of the newly established dust filter.
  • the windward side of the new filter dust net is the standard atmospheric pressure when the fan is stopped, but the pressure will change as the air inlet speed increases.
  • the fifth correspondence table is obtained during the data testing process of the air conditioner, and is already solidified in the air conditioning running program before the air conditioner leaves the factory to facilitate querying and using.
  • the establishing the fifth correspondence table specifically includes the following steps:
  • the fan's operable speed range is divided into m speed ranges according to the preset speed span, that is, d1 to dm; m is determined by the operable speed range and the speed span of the fan, and the speed span ranges from 30 to 120 r/min. If the value is too small, the measured pressure value does not change. If the value is too large, the accuracy of the final dirty plugging test result will be affected.
  • the pressure on the windward side of the dust filter is a pressure value corresponding to the speed value at a midpoint of the speed range; or the average of the pressure values corresponding to the plurality of speed values equally distributed in the speed range.
  • the minimum limit value of the fan running speed is 400r/min
  • the maximum limit value is 1299r/min
  • the speed span is 100r/min
  • m is 9, and the fifth correspondence table shown in Table 3 below can be formed:
  • P1 is the rotational speed value of 450r/min at the midpoint of d1 corresponding to the windward side pressure value of the dust filter
  • P2 is the rotational speed value of 550r/min at the midpoint of d2 corresponding to the windward side pressure value of the dust filter, and so on. Since the current fan speed is 1080r/min in step 1, the current fan speed is in the d7 interval, and the corresponding dust side wind side pressure value is P7. The pressure value of the leeward side of the filter net and the dust filter can be calculated in step 3. The first pressure difference of the windward side pressure value is P7-p0.
  • the corresponding dust filter level of the dust filter is obtained according to the first pressure difference and the first fan speed, or the corresponding dirty level of the indoor unit is obtained according to the second pressure difference and the first fan speed, specifically: querying the pre-established
  • the sixth correspondence table of the dust filter net dirty plugging level and the different fan speeds and the first pressure difference is obtained, and the first pressure difference calculated in step 3 is obtained at the current fan speed corresponding to the dust filter network dirty plugging level.
  • the sixth correspondence table is obtained during the data testing process of the air conditioner, and is already solidified in the air conditioning running program before the air conditioner leaves the factory to facilitate querying and using.
  • the sixth correspondence table is established in the data testing process, and includes the following specific steps:
  • the pressure value of the dust screen on the windward side and the pressure value of the leeward side of the dust filter corresponding to the speed value at the midpoint of each speed interval are obtained, and the difference between the two is obtained to obtain the first pressure difference, and Said first pressure difference is set to a first value;
  • the pressure value of the windward side of the dust filter corresponding to the rotational speed value at the midpoint of each speed interval and the pressure value of the leeward side of the dust filter are obtained, and the difference between the two is obtained.
  • the pressure difference range is equally divided, and the pressure difference range corresponding to the dirty plugging level of each dust filter is obtained under the speed range.
  • the number of the equal divisions can be arbitrarily selected according to requirements, and only a certain span of the pressure difference in each dirty plugging level can be satisfied.
  • the pressure difference range is equally divided into four small segments. Range, each small range corresponds to a filter dust dirty block level, that is, the filter net dirty block level is divided into 4 levels, and finally the sixth correspondence table is shown in Table 4:
  • the first pressure difference between the leeward side pressure value of the dust filter net and the windward side pressure value of the dust filter net is p7-p0, because the speed range is in the d7 interval, and the value of the (p7-p0) is assumed to be between Between ⁇ P72- ⁇ P73, you can get The dust filter has a dirty plug level of z3.
  • the pressure difference between the two sides of the new filter dust net is approximately 0, and the larger the pressure difference is, the more serious the dust filter is dirty, and the two are proportional.
  • the dirty plug level is displayed through the display panel
  • the dirty plug level is displayed through the display panel, and the buzzer sounds or the intelligent voice prompt is used at the same time;
  • the dirty plug level is displayed through the display panel, and the buzzer is used to buzzer in the short-time and multiple times when the air conditioner is turned on and/or running. Prompt and/or intelligent voice prompts to drive the cleaning device for automatic cleaning;
  • the dirty plug level is displayed through the display panel, and the buzzer is used to make a buzzer in the short-time and multiple times when the air conditioner is turned on and/or running. And/or intelligent voice prompting, and controlling the air conditioner to stop running; in the control mode, the higher the dirty blocking level, the more serious the dust filter or the dirty function of the indoor unit.
  • the following control may also be performed: after the first preset time, the dust filter dirty blocking level or the indoor unit is detected again. Dirty block level, when the dust filter is dirty or the dirty level of the indoor unit is not decreased, the fan speed is increased and the air volume is automatically compensated.
  • the automatic steps for air volume include the following steps:
  • the wind turbine compensation amount corresponding to the current dirty plugging level is obtained by querying a mapping table of the pre-established dust filter level and the fan speed compensation amount. Or pre-establish the calculation formula of the fan speed compensation amount, and substitute the current dirty plug level into the corresponding fan speed compensation amount calculation formula to generate the wind turbine speed compensation amount corresponding to the current dirty plug level.
  • FIG. 6 is a schematic structural diagram of a single pressure sensor-based air conditioning dirty block detection system corresponding to a method according to another embodiment of the present invention, including a first acquisition module, a second acquisition module, a difference calculation module, and a third obtaining module, configured to acquire a pressure value of a leeward side of the dust filter under the current fan speed, or a pressure value of the leeward side of the heat exchanger at the current fan speed; and the third acquiring module is configured to use the current The fan speed obtains the corresponding windward side pressure value of the dust filter; the difference calculation module is used for calculating the first pressure difference between the pressure value of the leeward side of the dust filter and the pressure value of the windward side of the dust filter, or the pressure value of the leeward side of the heat exchanger and the dust filter a second pressure difference of the windward side pressure value of the network; the third acquiring module is configured to obtain a corresponding dust filter dirty plugging level according to the first pressure difference and the current fan speed; or obtain a corresponding
  • the embodiment further includes a control module, wherein the control module is configured to adopt different control modes for the air conditioner according to different dust filter dirty plugging levels or different indoor air dirty blocking levels; and/or for passing the first After the preset time, the dust filter level or the dirty level of the indoor unit is detected again, and when the dust filter level is dirty or the dirty level of the indoor unit is not decreased, the fan speed is increased and the air volume is automatically compensated.
  • the control module is configured to adopt different control modes for the air conditioner according to different dust filter dirty plugging levels or different indoor air dirty blocking levels; and/or for passing the first After the preset time, the dust filter level or the dirty level of the indoor unit is detected again, and when the dust filter level is dirty or the dirty level of the indoor unit is not decreased, the fan speed is increased and the air volume is automatically compensated.
  • the first acquiring module in the embodiment includes: a speed collecting unit configured to collect the current fan speed; and a first pressure sensor disposed between the dust filter and the heat exchanger for continuously collecting the leeward side of the filter net The pressure value, or a second pressure sensor disposed on the leeward side of the heat exchanger for continuously collecting the pressure value of the leeward side of the heat exchanger; and a calculation unit for the plurality of pressure values of the leeward side of the continuously collected dust filter Take the average value directly or remove the maximum value and the minimum value and take the average value to obtain the pressure value of the leeward side of the dust filter net or directly take the average value of the multiple pressure values on the leeward side of the continuously collected heat exchanger or remove the maximum value and the minimum value.
  • the mean value gives the leeward side pressure value of the heat exchanger.
  • the third obtaining module includes: a second storage unit, configured to store a pre-established fifth correspondence relationship between the windward side pressure value of the dust filter and the different fan speeds; and a second query unit, configured to query the fifth corresponding relationship
  • the table obtains the pressure on the windward side of the dust filter corresponding to the current fan speed.
  • the second obtaining module further includes: a third storage unit, configured to store a pre-established dirty filter level of the dust filter, a sixth correspondence table of different fan speeds and pressure differences, or a pre-established dirty level of the indoor unit and different levels
  • the seventh correspondence table of the fan speed and the pressure difference is configured to query the sixth correspondence table, and obtain the dust filter level corresponding to the first pressure difference calculated by the calculating unit at the current fan speed, or
  • the seventh correspondence table is queried, and the dirty state of the indoor unit corresponding to the current pressure difference of the second pressure difference calculated by the calculating unit is obtained.
  • the air conditioning dirty block detecting method and the detecting system of the embodiment use the pressure difference on both sides of the dust filter net to determine the dirty plugging degree of the dust filter net, but the pressure on the windward side of the dust filter net is not detected by the opening detection function in real time, but is measured beforehand and Cured into the program.
  • the air conditioner is actually running the open detection function, only the pressure on the leeward side of the filter net is detected, and then the corresponding windward side pressure is detected according to the fan speed at the time of detection, and then the difference is made, and the dirty block level is determined according to the difference.
  • This detection method not only has accurate detection results, but also requires only one pressure sensor, and the detection method is simple and low in cost.
  • a method for detecting a dirty plug of a dust filter based on a single pressure sensor includes the following steps:
  • Step 1 adjust the current fan speed to a preset target fan speed, and obtain a pressure value of the leeward side of the dust filter under the target fan speed;
  • Step 2 obtaining a corresponding windward side pressure value of the dust filter according to the target fan speed
  • Step 3 calculating a first pressure difference between the pressure value of the leeward side of the dust filter net and the pressure value of the windward side of the dust filter;
  • Step 4 Acquire a corresponding dirty dust filter level according to the first pressure difference.
  • the current fan speed of the fan is first adjusted to the target fan speed, for example, 1080r/min, and then the pressure value of the leeward side of the dust filter is collected by the pressure sensor.
  • the target fan speed in this embodiment is in the air conditioning system. Within the range of fan speed allowed, and within the range of the most frequently operated air conditioner, there is a very high probability that the current fan speed of the air conditioner is near the target fan speed, so there is no need to adjust or adjust the current fan speed of the air conditioner. Smaller.
  • a method of collecting the average value may be adopted, specifically: maintaining the target fan speed unchanged, and continuously collecting the leeward side of the dust filter through the pressure sensor.
  • the average value of the plurality of pressure values is obtained as the leeward side pressure value of the dust filter.
  • the target fan speed is kept constant at 1080r/min, and the leeward side pressure is continuously detected 5 times.
  • the average value of the pressure data is obtained 5 times to obtain the pressure value of the leeward side of the dust filter.
  • the maximum value and the minimum value of the plurality of pressure values on the leeward side of the dust filter continuously collected by the pressure sensor may be used to obtain the leeward side pressure value of the dust filter net, and no detailed example is given here. .
  • the windward side pressure value of the dust filter corresponding to the target fan speed is obtained by querying the eighth correspondence table between the windward side pressure value and the target fan speed of the newly established dust filter.
  • the eighth correspondence table is obtained during the data testing process of the air conditioner, and is already solidified in the air conditioning running program before the air conditioner leaves the factory to facilitate querying and using.
  • by fixing the fan speed to the target fan speed it is only necessary to obtain a windward side wind pressure value corresponding to the target fan speed in the data test process, and it is not necessary to obtain different fan speeds after multiple times of detection.
  • the value corresponds to the windward side pressure value of the dust filter, so the process of establishing the eighth correspondence table is simpler.
  • the present invention does not need to divide the operable speed of the fan into a plurality of speed ranges, and simply measures the dust screen corresponding to each speed range by the windward side pressure value corresponding to the speed value of the speed value at the midpoint of each speed section. The side pressure value, so the test results obtained will be more accurate.
  • the target fan speed is 1080r/min
  • the eighth correspondence table is queried
  • the corresponding wind side pressure value of the dust filter is P1
  • the pressure value of the leeward side of the dust filter and the dust screen facing the wind can be calculated in step 3.
  • the first pressure difference of the side pressure values is p1-p0.
  • Step 4 of the embodiment is specifically: querying a pre-established dirty filter level of the dust filter and a ninth correspondence table of the first pressure difference at the target fan speed, and obtaining the first pressure difference calculated in step 3 at the target fan speed Corresponding dust filter level.
  • the ninth correspondence table is obtained in the process of data testing of the air conditioner, and is already solidified in the air conditioning running program before the air conditioner leaves the factory to facilitate querying and using.
  • the establishing the ninth correspondence table in the data testing process includes the following specific steps:
  • the pressure value of the windward side of the dust filter corresponding to the target fan speed and the pressure value of the leeward side of the dust filter are obtained, and the difference between the two is used to obtain a first pressure difference, and the first pressure difference is set. Is the first value;
  • the target fan speed is obtained.
  • the pressure value on the windward side of the dust filter net and the pressure value on the leeward side of the dust filter net, the difference between the two is obtained as the first pressure difference at this time, and is set to a second value; the first value and the second value form a target fan speed corresponding to Range of pressure differences;
  • the pressure difference range is equally divided to obtain a pressure difference range corresponding to the dirty plugging level of each dust filter under the target fan speed.
  • the number of the equal divisions can be arbitrarily selected according to requirements, and only a certain span of the pressure difference in each dirty plugging level can be satisfied.
  • the pressure difference range is equally divided into four small segments. The range, each small range corresponds to a dust filter dirty block level, that is, the filter net dirty block level is divided into 4 levels, and finally the fifth correspondence table is shown in Table 5:
  • the first pressure difference between the leeward side pressure value of the dust filter net and the windward side pressure value of the dust filter net is p1 - p0, and the value of (p1 - p0) is assumed to be between ⁇ P11 - ⁇ P12, and
  • the dust filter has a dirty plug level of z2.
  • the pressure difference between the two sides of the new filter dust net is approximately 0, and the larger the pressure difference is, the more serious the dust filter is dirty, and the two are proportional.
  • a plurality of target fan speeds may be preset, and the eighth correspondence table includes a windward side pressure value corresponding to each target fan speed, and the ninth correspondence table is included. Including the corresponding relationship between different first pressure differences and different dust filter levels of each filter fan speed, so that when applying the method of the invention, the closest target fan speed can be selected according to the current fan speed, and as far as possible The current fan speed is adjusted, which not only makes the control process simpler, but also ensures the accuracy of the dirty plug level detection result.
  • FIG. 8 is a schematic structural diagram of a dirty plugging detection system based on a single pressure sensor according to another embodiment of the present invention, including a rotational speed adjustment module, a first acquisition module, a second acquisition module, a difference calculation module, and a third obtaining module, the speed adjusting module is configured to adjust a current fan speed to a preset target fan speed; the first acquiring module is configured to obtain a leeward side pressure value of the dust filter or a leeward of the heat exchanger under the target fan speed The third obtaining module is configured to obtain a corresponding windward side pressure value of the dust filter according to the target fan speed; and the difference calculating module is configured to calculate a pressure value of the leeward side of the dust filter and a pressure value of the windward side of the dust filter a pressure difference, or a second pressure difference between the pressure value of the leeward side of the heat exchanger and the pressure value of the windward side of the dust filter; the second obtaining module, configured to acquire the dust filter level of the dust filter under
  • a control module is further included, and the control module is configured to perform a dirty plugging level according to different dust filters.
  • different indoor air dirty blocking levels adopt different control modes for the air conditioner; and/or used to detect the dust filter dirty block level or the indoor machine dirty block level again after the first preset time, when the dust filter net dirty block level Or when the dirty level of the indoor unit does not drop, the fan speed is increased, and the air volume is automatically compensated.
  • the first acquiring module in the embodiment includes a first pressure sensor disposed between the dust filter net and the heat exchanger for continuously collecting the pressure value of the leeward side of the dust filter; or being disposed on the leeward side of the heat exchanger
  • the second pressure sensor is used for continuously collecting the pressure value of the leeward side of the heat exchanger;
  • the calculating unit is configured to directly take the average value of the plurality of pressure values on the leeward side of the continuously collected dust filter net or remove the maximum value and the minimum value.
  • the mean value is obtained as the leeward side pressure value of the dust filter net or a plurality of pressure values of the continuously collected heat exchanger leeward side are directly taken as the average value or the maximum value and the minimum value are removed, and the average value is taken to obtain the leeward side pressure value of the heat exchanger.
  • the third obtaining module includes: a second storage unit, configured to store a preset correspondence table of a windward side pressure value of the dust filter and a target fan speed; and a second query unit, configured to query the eighth correspondence The table obtains the pressure on the windward side of the dust filter corresponding to the target fan speed.
  • the second obtaining module includes a third storage unit, configured to store a pre-established ninth correspondence table of the filter dust dirty level and the pressure difference at the target fan speed, or a pre-established indoor dirty block level and pressure difference a tenth correspondence table in the target fan speed; the third query unit is configured to query the ninth correspondence table to obtain a dust filter level corresponding to the first pressure difference at the target fan speed; or query the The tenth correspondence table obtains the dirty level of the indoor unit corresponding to the second pressure difference at the target fan speed.
  • the air conditioning dirty block detecting method and the detecting system of the embodiment use the pressure difference on both sides of the dust filter net to determine the dirty plugging degree of the dust filter net, but the pressure on the windward side of the dust filter net is not detected by the opening detection function in real time, but is measured beforehand and Cured into the program.
  • the air conditioner is actually running the open detection function, only the pressure on the leeward side of the filter net is detected, and then the corresponding windward side pressure is detected according to the fan speed at the time of detection, and then the difference is made, and the dirty block level is determined according to the difference.
  • This detection method not only has accurate detection results, but also requires only one pressure sensor, and the detection method is simple and low in cost.
  • the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the above-described single pressure sensor based air conditioning dirty block detection method.
  • FIG. 9 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention, including the air pressure dirty block detecting system based on a single pressure sensor.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • a "computer-readable medium” can be any apparatus that can contain, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with the instruction execution system, apparatus, or device.
  • computer readable media include the following: electrical connections (electronic devices) having one or more wires, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM).
  • the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.
  • portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
  • multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
  • a suitable instruction execution system For example, if implemented in hardware and in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), and the like.
  • each functional unit in each embodiment of the present invention may be integrated into one processing module, or may be each Units exist physically separately, or two or more units can be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
  • the above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • installation can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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Abstract

一种基于单个压力传感器的空调脏堵检测方法、系统和空调器，该方法包括以下步骤：获取第一风机转速下的滤尘网背风侧压力值，或者第一风机转速下的换热器背风侧压力值；根据第一风机转速获取滤尘网迎风侧压力值；计算滤尘网两侧的第一压差，或者室内机两侧的第二压差；根据第一压差和第一风机转速获取滤尘网脏堵等级，或者根据第二压差和第一风机转速获取室内机脏堵等级。该方法通过第一风机转速直接获取滤尘网迎风侧压力值，因此只需要一个压力传感器采集滤尘网背风侧压力值或者换热器背风侧压力值即可得到滤尘网或者室内机的脏堵等级，不仅检测结果准确，检测方法简单而且节省了一个压力传感器，成本低廉。

Description

基于单个压力传感器的空调脏堵检测方法、系统和空调器 技术领域
本发明涉及空调控制领域，特别涉及一种基于单个压力传感器的空调脏堵检测方法、系统和空调器。
背景技术
滤尘网与换热器在空调室内机空气循环中占据重要位置，空气首先流经滤尘网，再经过换热器构成风循环通路，空气在风道中流动把换热器中的热量带出，从而实现室内空间的制冷或制热。但由于空气中漂浮尘粒的存在，这两个部件极易积灰而影响空调室内机的空气循环。无论是换热器脏堵还是滤尘网脏堵，都会对空调性能产生很大的影响。换热器或滤尘网脏堵后，空气在风道中的流通量不够，则会导致换热器中的热量不能充分散发，造成在制冷模式下，换热器温度持续降低；制热模式下，换热器温度持续升高的结果，而温度的持续下降或上升会导致换热器及其他器件损坏，或者触发空调保护机制而停止运行。除此之外，室内机换热器或滤尘网脏堵还会使空调出风带有灰尘味，使用户体验变差。而且灰尘在滤尘网和换热器上附着后，很多细菌会寄生其中，这些细菌随空调出风弥漫于室内空间会对人体健康造成危害。
传统滤尘网或空调室内机的空调脏堵检测方法有风机功率检测法与双侧压差检测法。前一种方法属于间接检测，原理是风机功率会随脏堵程度的不同而变化。但由于空调系统的复杂性，影响风机功率的因素很多，除脏堵外还有很多其他显性因素与隐性因素。显性因素如电网电压波动、导风条角度等可以加以补偿与修正，但诸多的隐性因素并没有办法进行补偿，这是造成其检测结果不够准确的最大原因。第二种检测方法为直接测量法，检测准确，但需要两个压力传感器同时测量两侧压力，成本相对较高。
发明内容
本发明提供了一种基于单个压力传感器的空调脏堵检测方法、系统和空调器，解决了以上技术问题。
本发明解决上述技术问题的技术方案如下：
依据本发明的一个方面，提供了一种基于单个压力传感器的空调脏堵检测方法，包括以下步骤：
步骤1，获取第一风机转速下的滤尘网背风侧压力值，或者第一风机转速下的换热器背风侧压力值；
步骤2，根据第一风机转速和滤尘网背风侧压力值获取对应的滤尘网脏堵等级，或者根据第一风机转速和换热器背风侧压力值获取对应的室内机脏堵等级。
依据本发明的另一个方面，提供了一种基于单个压力传感器的空调脏堵检测系统，包括第一获取模块和第二获取模块，
所述第一获取模块用于获取第一风机转速下的滤尘网背风侧压力值，或者第一风机转速下的换热器背风侧压力值；
所述第二获取模块用于根据第一风机转速和滤尘网背风侧压力值获取对应的滤尘网脏堵等级，或者根据第一风机转速和换热器背风侧压力值获取对应的室内机脏堵等级。
此外，本发明还提供了一种非临时性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述的基于单个压力传感器的空调脏堵检测方法。
为了解决本发明的技术问题，本发明还提供了一种空调器，包括以上所述的基于单个压力传感器的空调脏堵检测系统。
本发明的有益效果是：本发明的脏堵检测方法和检测系统，在获取滤尘网脏堵等级时综合考虑风机转速和滤尘网背风侧压力值，在获取室内机脏堵等级时综合考虑风机转速和换热器背风侧压力值，相较于风机功率检测法与双侧压差检测法，不仅检测结果准确，检测方法简单而且只需要使用一个压力传感器，检测成本低廉。
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图1为根据本发明一个实施例的基于单个压力传感器的空调脏堵检测方法的流程示意图；
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图3为根据本发明另一个实施例的基于单个压力传感器的空调脏堵检测方法的流程示意图；
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图9为根据本发明一个实施例的空调器的方框示意图。
具体实施方式
以下结合附图对本发明的原理和特征进行描述，所举实例只用于解释本发明，并非用于限定本发明的范围。
本发明提供了一种基于单个压力传感器的空调脏堵检测方法，包括以下步骤：
步骤1，获取第一风机转速下的滤尘网背风侧压力值，或者第一风机转速下的换热器背风侧压力值；
步骤2，根据第一风机转速和滤尘网背风侧压力值获取对应的滤尘网脏堵等级，或者根据第一风机转速和换热器背风侧压力值获取对应的室内机脏堵等级。
基于上述脏堵检测方法，本发明既可检测滤尘网的脏堵程度，也可以检测空调室内机的脏堵程度，空调室内机的脏堵程度为滤尘网与换热器的整体脏堵程度，两者的区别在于压力传感器的位置设置不同。当需要检测滤尘网的脏堵程度时，将压力传感器设置在滤尘网和换热器之间，通过检测到的滤尘网背风侧的压力和第一风机转速获取滤尘网的脏堵等级；当需要检测室内机的脏堵程度时，将压力传感器设置在换热器的背风侧，通过检测到的换热器背风侧的压力和第一风机转速获取室内机的脏堵等级。以上两种方法中，除了压力传感器设置的位置和采集的数据不二样，其余步骤均相同。因此以下实施例只对检测滤尘网脏堵等级的方法进行详细说明，检测室内机脏堵等级的方法参考实施例的步骤进行修改即可。同时，本发明可以采用两种方法获取滤尘网脏堵等级，一种是在当前风机转速下检测滤尘网脏堵等级，另一种是将当前风机转速调整为目标风机转速，然后计算目标风机转速下的滤尘网脏堵等级，以下分别对上述两种方法进行详细说明。
如图1所示，为本发明一个实施例提出的一种基于单个压力传感器的空调脏堵检测方法的流程示意图，其包括以下步骤：
步骤1，获取当前风机转速和当前滤尘网背风侧压力值；
步骤2，根据当前风机转速和当前滤尘网背风侧压力值获取对应的滤尘网脏堵等级。
本实施例步骤1中，直接通过转速传感器采集当前风机转速为960r/min，通过压力传感器采集滤尘网背风侧压力值为p0。在其他实施例中，为了保证滤尘网背风侧压力值的准确性，可以采用多次采集取均值的方法，具体为：保持当前风机转速不变，对通过压力传感器连续采集到的滤尘网背风侧的多个压力值取均值以得到所述滤尘网背风侧压力值。比如检测时，首先获取当前风机转速960r/min，保持当前风机转速为960r/min不变，连续 检测5次背风侧压力，取5次压力数据的平均值得到滤尘网背风侧压力值为pO。在其他实施例中，还可以对通过压力传感器连续采集到的滤尘网背风侧的多个压力值去掉最大值和最小值后取均值以得到所述滤尘网背风侧压力值，在此不进行详细举例。
本实施例步骤2中，通过查询预先建立的滤尘网脏堵等级和不同风机转速、滤尘网背风侧压力值的第一对应关系表，获取当前滤尘网背风侧压力值在当前风机转速下对应的滤尘网脏堵等级。进风端滤尘网背风侧压力不仅与滤尘网脏堵程度有关，而且与风机转速有关，风机转速越大、脏堵越严重，滤尘网背风侧压力越小，因此在评估滤尘网脏堵等级时，只有综合考虑风机转速和滤尘网背风侧压力，得到的滤尘网脏堵等级才会更加准确。本实施例中，第一对应关系表是在对空调进行数据测试的过程得到的，并在空调出厂前就已经固化在空调运行程序中以方便查询使用。在数据测试过程中，建立所述第一对应关系表包括以下步骤：
S20l，将风机可运行转速范围按照预设的转速跨度划分为m个转速区间dl～dm；m由风机的可运行转速范围与转速跨度决定，转速跨度取值范围为30～120r/min为宜，取值太小所测压力值没有变化，取值太大会影响最后脏堵检测结果的准确性。
S202，获取空调第一次使用时，每个转速区间中点处转速值对应的滤尘网背风侧压力值，并将所述滤尘网背风侧压力值设为第一数值；
S203，经过第二预设时间后，比如经过一年且滤尘网一直未清洗时，再次获取每个转速区间中点处转速值对应的滤尘网背风侧压力值，并将所述滤尘网背风侧压力值设为第二数值；所述第一数值和第二数值形成该转速区间对应的滤尘网背风侧压力值范围；
S204，将所述滤尘网背风侧压力值范围按照预设的脏堵等级个数进行均分，获取该转速区间下，每个滤尘网脏堵等级对应的滤尘网背风侧压力值范围。本实施例中，均分个数根据需要可任意选取，只需满足每个脏堵等级中压力值有一定跨度即可，比如本实施例中将所述滤尘网背风侧压力值范围等分为4个小范围，每个小范围对应一个滤尘网脏堵等级，即将滤尘网脏堵等级分为4级。本实施例中，风机可运行转速最小限制值为600r/min，最大限制值为1199r/min，转速跨度取100r/min，则m为6，即形成d1～d6这6个转速区间，每个转速区间对应的滤尘网脏堵等级都分为4级，可形成如下表1所示的第一对应关系表：
表1不同风机转速区间的第一对应关系表
Figure PCTCN2017084605-appb-000001
Figure PCTCN2017084605-appb-000002
本实施例中，当前风机转速为960r/min，处于d4区间；若P42＜pO≤P43，则可以得到此时的滤尘网脏堵等级为z3级，然后可以根据滤尘网的脏堵等级对空调进行相应的控制。
在其他实施例中，也可以按照如上方法建立用于获取室内机的脏堵等级的第二对应关系表，具体包括以下步骤：
将风机可运行转速范围按照预设的转速跨度划分为多个转速区间，其中，所述转速跨度为30～120r/min；
获取空调第一次使用时，每个转速区间中点处转速值对应的换热器背风侧压力值，并将所述换热器背风侧压力值设为第三数值；
经过第三预设时间后，再次获取每个转速区间中点处转速值对应的换热器背风侧压力值，并将所述换热器背风侧压力值设为第四数值，其中，所述第三数值和第四数值形成该转速区间对应的换热器背风侧压力值范围；
将所述换热器背风侧压力值范围按照预设的脏堵等级个数进行均分，获取该转速区间下，每个室内机脏堵等级对应的换热器背风侧压力值范围。
然后通过查询所述第二对应关系表，获取当前换热器背风侧压力值在当前风机转速下对应的室内机脏堵等级。
通过本发明的脏堵检测方法获得了滤尘网的脏堵等级后，可以根据不同的滤尘网脏堵等级或室内机脏堵等级对空调采取不同的控制方式，比如本实施例中：
当滤尘网脏堵等级或者室内机脏堵等级为zl级时，通过显示板显示脏堵等级；
当滤尘网脏堵等级或者室内机脏堵等级为z2级时，通过显示板显示脏堵等级，同时开机时采用峰鸣器鸣响提示或者智能语音提示；
当滤尘网脏堵等级或者室内机脏堵等级为z3级时，通过显示板显示脏堵等级，同时采用蜂鸣器在空调开机和/或运行时以短时多次鸣响的方式进行蜂鸣提示和/或进行智能语音提示，并驱动清洁装置进行自动清洁；
当滤尘网脏堵等级或者室内机脏堵等级为z4级时，通过显示板显示脏堵等级，采用蜂鸣器在空调开机和/或运行时以短时多次鸣响的方式进行蜂鸣提示和/或进行智能语音提示，并控制空调停止运行；所述控制方式中，脏堵等级越高，滤尘网或者室内机脏堵越严重。
在其他实施例中，通过本发明的脏堵检测方法获得了滤尘网的脏堵等级后，还可以进行以下控制：经过第一预设时间后再次检测所述滤尘网脏堵等级或者室内机脏堵等级，当滤尘网脏堵等级或者室内机脏堵等级没有下降时，提升风机转速，对风量进行自动补偿。对风量进行自动步骤包括以下步骤:
S301，根据滤尘网的脏堵等级获取对应的风机转速补偿量；
S302，根据风机转速补偿量获取风机的目标转速；
S303，根据风机的目标转速控制风机运行。
所述S301中，通过查询预先建立的滤尘网脏堵等级与风机转速补偿量的映射表，获取当前脏堵等级对应的风机转速补偿量。或者预先建立风机转速补偿量计算公式，将当前脏堵等级代入对应风机转速补偿量计算公式，生成当前脏堵等级对应的风机转速补偿量。
如图2所示，为本发明一个实施例的方法对应的基于单个压力传感器的空调脏堵检测系统的结构示意图，包括第一获取模块和第二获取模块，所述第一获取模块用于获取当前风机转速和当前滤尘网背风侧压力值，或者用于获取当前风机转速和当前换热器背风侧压力值；所述第二获取模块用于根据当前风机转速和当前滤尘网背风侧压力值获取对应的滤尘网脏堵等级，或者用于根据当前风机转速和当前换热器背风侧压力值获取对应的室内机脏堵等级。
优选的，本实施例的空调脏堵检测系统还包括控制模块，所述控制模块用于根据不同的滤尘网脏堵等级或者不同的室内机脏堵等级对空调采取不同的控制方式；和/或用于经过第一预设时间后再次检测所述滤尘网脏堵等级或者室内机脏堵等级，当滤尘网脏堵等级或者室内机脏堵等级没有下降时，提升风机转速，对风量进行自动补偿。
优选的，本实施例中，所述第一获取模块包括：转速采集单元，用于采集当前风机转速；设置在滤尘网和换热器之间的第一压力传感器，用于连续采集滤尘网背风侧的压力值，或者设置在换热器背风侧的第二压力传感器，用于连续采集换热器背风侧的压力值；计算单元，用于对连续采集到的滤尘网背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值以得到所述滤尘网背风侧压力值或者对连续采集到的换热器背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值以得到所述换热器背风侧压力值。
所述第二获取模块包括第一存储单元，用于存储预先建立的滤尘网脏堵等级和不同风机转速、滤尘网背风侧压力值的第一对应关系表，或者用于存储预先建立的室内机脏堵等 级和不同风机转速、换热器背风侧压力值的第二对应关系表；第一查询单元，用于查询所述第一对应关系表，获取当前滤尘网背风侧压力值在当前风机转速下对应的滤尘网脏堵等级，或者用于查询第二对应关系表，获取当前换热器背风侧压力值在当前风机转速下对应的室内机脏堵等级。
本发明的脏堵检测方法和检测系统，在获取滤尘网脏堵等级时综合考虑风机转速和滤尘网背风侧压力值，在获取室内机脏堵等级时综合考虑风机转速和换热器背风侧压力值，相较于风机功率检测法与双侧压差检测法，不仅检测结果准确，检测方法简单而且只需要使用一个压力传感器，检测成本低廉。
如图3所示，为本发明另一个实施例提出的一种基于单个压力传感器对滤尘网进行脏堵检测的方法，包括以下步骤：
步骤1，将当前风机转速调整为预设的目标风机转速，并获取目标风机转速下的滤尘网背风侧压力值；
步骤2，根据所述滤尘网背风侧压力值获取对应的滤尘网脏堵等级。
本实施例步骤1中，首先将风机的当前风机转速调整为目标风机转速，比如960r/min，然后通过压力传感器采集滤尘网背风侧压力值为pO。在其他实施例中，为了保证滤尘网背风侧压力值的准确性，可以采用多次采集取均值的方法，具体为：保持目标风机转速960r/min不变，对通过压力传感器连续采集到的滤尘网背风侧的多个压力值取均值以得到所述滤尘网背风侧压力值。比如检测时，保持当前风机转速为960r/min不变，连续检测5次背风侧压力，取5次压力数据的平均值得到滤尘网背风侧压力值为pO。在其他实施例中，还可以对通过压力传感器连续采集到的滤尘网背风侧的多个压力值去掉最大值和最小值后取均值得到所述滤尘网背风侧压力值，在此不进行详细举例。
然后，通过查询预先建立的目标风机转速下滤尘网脏堵等级和滤尘网背风侧压力值的第三对应关系表，获取所述滤尘网背风侧压力值pO对应的滤尘网脏堵等级。本实施例中，第三对应关系表是在对空调进行数据测试的过程得到的，并在空调出厂前就已经固化在空调运行程序中以方便查询使用。同时，本实施例中通过将风机转速固定为目标风机转速，因此只需要在数据测试过程中得到目标风机转速下，滤尘网背风侧压力值和滤尘网脏堵等级的对应关系即可，无需经过多次检测获取不同风机转速值下滤尘网背风侧压力值和滤尘网脏堵等级的对应关系，因此建立第三对应关系表的过程更加简单。另一方面，本发明不需要将风机可运行转速划分为多个转速区间，通过每个转速区间中点处转速值对应的滤尘网背风侧压力值来简单衡量每个转速区间对应的滤尘网脏堵等级，因此获得的检测结果也会更加准确。本实施例在数据测试过程中，建立所述第三对应关系表包括以下步骤：
S401，获取空调第一次使用时，目标风机转速对应的滤尘网背风侧压力值，并将所述 滤尘网背风侧压力值设为第五数值；
S402，经过第四预设时间后，再次获取目标风机转速对应的滤尘网背风侧压力值，并将所述滤尘网背风侧压力值设为第六数值，其中，所述第五数值和第六数值形成目标风机转速对应的滤尘网背风侧压力值范围；
S403，将所述滤尘网背风侧压力值范围按照预设的脏堵等级个数进行均分，获取目标风机转速下，每个滤尘网脏堵等级对应的滤尘网背风侧压力值范围。本实施例中，均分个数根据需要可任意选取，只需满足每个脏堵等级中压力值范围有一定跨度即可，比如本实施例中将所述滤尘网背风侧压力值范围等分为4个小范围，每个小范围对应一个滤尘网脏堵等级，即将滤尘网脏堵等级分为4级。本实施例中，目标风机转速为960r/min，检测到滤尘网背风侧压力值为pO，对应的滤尘网脏堵等级都分为4级，可形成如下表2所示的第三对应关系表：
表2目标风机转速下的第三对应关系表
Figure PCTCN2017084605-appb-000003
本实施例中，滤尘网背风侧压力值pO介于Pll-P12之间，可以得到滤尘网的脏堵等级为z2级，然后可以根据滤尘网的脏堵等级对空调进行相应的控制。
在其他实施例中，也可以按照如上方法建立用于获取室内机的脏堵等级的第四对应关系表，具体包括以下步骤:
获取空调第一次使用时，目标风机转速对应的换热器背风侧压力值，并将所述换热器背风侧压力值设为第七数值；
经过第五预设时间后，再次获取目标风机转速对应的换热器背风侧压力值，并将所述换热器背风侧压力值设为第八数值，其中，所述第七数值和第八数值形成目标风机转速对应的换热器背风侧压力值范围；
将所述换热器背风侧压力值范围按照预设的脏堵等级个数进行均分，获取目标风机转速下，每个室内机脏堵等级对应的换热器背风侧压力值范围。
然后通过查询所述第四对应关系表，获取步骤1计算出的所述换热器背风侧压力值对应的室内机脏堵等级。
在本发明的其他实施例中，也可以预先设定多个目标风机转速，且第三对应关系表中包括每个目标风机转速下，滤尘网背风侧压力值与滤尘网脏堵等级的对应关系，第四对应关系表中包括每个目标风机转速下，换热器背风侧压力值与室内机脏堵等级的对应关系， 这样在应用本发明的方法时，可以根据当前风机转速选择最接近的目标风机转速，尽可能避免对当前风机转速进行调整，不仅控制过程更加简单，而且可以保证脏堵等级检测结果的准确性。
通过本发明的脏堵检测方法获得了滤尘网的脏堵等级后，可以根据不同的滤尘网脏堵等级或换热器脏堵等级对空调采取不同的控制方式，或者对风量进行自动补偿，具体方法与可以参照上述实施例中的方法，在此不进行详细说明。
如图4所示，为与本发明另一个实施例的方法对应的基于单个压力传感器的空调脏堵检测系统的结构示意图，包括转速调整模块、第一获取模块和第二获取模块，所述转速调整模块用于将当前风机转速调整为预设的目标风机转速；所述第一获取模块用于获取目标风机转速下的滤尘网背风侧压力值或者换热器背风侧压力值；所述第二获取模块用于根据所述滤尘网背风侧压力值获取对应的滤尘网脏堵等级，或者根据所述换热器背风侧压力值获取对应的室内机脏堵等级。
优选的，本实施例中还包括控制模块，所述控制模块用于根据不同的滤尘网脏堵等级或者不同的室内机脏堵等级对空调采取不同的控制方式；和/或用于经过第一预设时间后再次检测所述滤尘网脏堵等级或者室内机脏堵等级，并当滤尘网脏堵等级或者室内机脏堵等级没有下降时，提升风机转速，对风量进行自动补偿。
优选的，本实施例中，所述第二获取模块包括：设置在滤尘网和换热器之间的第一压力传感器，用于连续采集滤尘网背风侧的压力值，或者设置在换热器背风侧的第二压力传感器，用于连续采集换热器背风侧的压力值；计算单元，用于对连续采集到的滤尘网背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值以得到所述滤尘网背风侧压力值或者对连续采集到的换热器背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值以得到所述换热器背风侧压力值。
所述第二获取模块包括第一存储单元，用于存储预先建立的目标风机转速下滤尘网脏堵等级和滤尘网背风侧压力值的第三对应关系表，或者用于存储预先建立的目标风机转速下室内机脏堵等级和换热器背风侧压力值的第四对应关系表；第一查询单元，用于查询所述第三对应关系表，获取步骤1计算出的滤尘网背风侧压力值在目标风机转速下对应的滤尘网脏堵等级，或者用于查询第四对应关系表，获取步骤1计算出的换热器背风侧压力值在目标风机转速下对应的室内机脏堵等级。
本发明的脏堵检测方法和检测系统，在获取滤尘网脏堵等级时综合考虑风机转速和滤尘网背风侧压力值，在获取室内机脏堵等级时综合考虑风机转速和换热器背风侧压力值，相较于风机功率检测法与双侧压差检测法，不仅检测结果准确，检测方法简单而且只需要使用一个压力传感器，检测成本低廉。
本发明还提供了一种基于单个压力传感器的空调脏堵检测方法，包括以下步骤：
步骤1，获取第一风机转速下的滤尘网背风侧压力值，或者第一风机转速下的换热器背风侧压力值；
步骤2，根据第一风机转速获取对应的滤尘网迎风侧压力值；
步骤3，计算滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差，或者换热器背风侧压力值和滤尘网迎风侧压力值的第二压差；
步骤4，根据第一压差和第一风机转速获取对应的滤尘网脏堵等级；或者根据第二压差和第一风机转速获取对应的室内机脏堵等级。
基于上述空调脏堵检测方法，本发明既可检测滤尘网的脏堵程度，也可以检测空调室内机的脏堵程度，空调室内机的脏堵程度为滤尘网与换热器的整体脏堵程度，两者的区别在于压力传感器的位置设置不同。当需要检测滤尘网的脏堵程度时，将压力传感器设置在滤尘网和换热器之间，通过检测滤尘网背风侧的压力，获取滤尘网两侧的第一压差，根据第一压差获取滤尘网的脏堵等级；当需要检测室内机的脏堵程度时，将压力传感器设置在换热器的背风侧，通过检测换热器背风侧的压力，获取整个室内机两侧的第二压差，即滤尘网迎风侧和换热器背风侧的第二压差，根据第二压差获取室内机的脏堵等级。以上方法中，除了压力传感器设置的位置和采集的数据不一样，其余步骤均相同。以下实施例只对检测滤尘网脏堵等级的方法进行详细说明，检测室内机脏堵等级的方法参考实施例的说明进行修改即可。同时，本发明可以采用两种方法获取滤尘网脏堵等级，一种是在当前风机转速下检测滤尘网脏堵等级，另一种是将当前风机转速调整为目标风机转速，然后计算目标风机转速下的滤尘网脏堵等级，以下分别对上述两种方法进行详细说明。
如图5所示，为本发明又一个实施例提出的一种基于单个压力传感器的空调脏堵检测方法的流程示意图，包括以下步骤：
步骤1，获取当前风机转速和滤尘网背风侧压力值；
步骤2，根据当前风机转速获取对应的滤尘网迎风侧压力值；
步骤3，计算滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差；
步骤4，根据第一压差和当前风机转速获取对应的滤尘网脏堵等级。
本实施例步骤1中，直接通过转速传感器采集当前风机转速为1080r/min，通过压力传感器采集滤尘网背风侧压力值为p0。在其他实施例中，为了保证滤尘网背风侧压力值的准确性，可以采用多次采集取均值的方法，具体为：保持当前风机转速不变，对通过压力传感器连续采集到的滤尘网背风侧的多个压力值取均值得到所述滤尘网背风侧压力值。比如检测时，首先获取当前风机转速1080r/min，保持当前风机转速为1080r/min不变，连续检测5次背风侧压力，取5次压力数据的平均值得到滤尘网背风侧压力值为p0。在其他实 施例中，还可以对通过压力传感器连续采集到的滤尘网背风侧的多个压力值去掉最大值和最小值后取均值得到所述滤尘网背风侧压力值，在此不进行详细举例。
本实施例步骤2中，所述根据第一风机转速获取对应的滤尘网迎风侧压力值包括：
通过查询预先建立的全新滤尘网迎风侧压力值和风机转速的第五对应关系表，获取当前风机转速对应的滤尘网迎风侧压力值。全新滤尘网迎风侧在风机停转时为标准大气压，但随着进风速度的提升，压力会有所变化。本实施例中，第五对应关系表是在对空调进行数据测试的过程得到的，并在空调出厂前就已经固化在空调运行程序中以方便查询使用。在数据测试过程中，建立所述第五对应关系表具体包括以下步骤：
S501，将风机可运行转速范围按照预设的转速跨度划分为m个转速区间，即d1～dm；m由风机的可运行转速范围与转速跨度决定，转速跨度取值范围为30～120r/min为宜，取值太小所测压力值没有变化，取值太大会影响最后脏堵检测结果的准确性。
S502，获取每个转速区间d1、d2……dm对应的滤尘网迎风侧压力值P1、P2……Pm，建立第五对应关系表。所述滤尘网迎风侧压力值为转速区间中点处转速值对应的压力值；或者转速区间等分分布的多个转速值分别对应的压力值的均值。本实施例中风机可运行转速最小限制值为400r/min，最大限制值为1299r/min，转速跨度取100r/min，则m为9，可形成如下表3所示的第五对应关系表：
表3不同转速区间的第五对应关系表
Figure PCTCN2017084605-appb-000004
上表3中，P1为d1中点处转速值450r/min对应滤尘网迎风侧压力值，P2为d2中点处转速值550r/min对应滤尘网迎风侧压力值，依次类推。由于步骤1中，采集得到当前风机转速为1080r/min，因此当前风机转速处于d7区间，对应的滤尘网迎风侧压力值为P7，可以计算得到步骤3中，滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差为P7-p0。
本实施例中，根据第一压差和第一风机转速获取对应的滤尘网脏堵等级或者根据第二压差和第一风机转速获取对应的室内机脏堵等级，具体为：查询预先建立的滤尘网脏堵等级和不同风机转速、第一压差的第六对应关系表，获取步骤3计算出的第一压差在当前风机转速下对应的滤尘网脏堵等级。本实施例中，第六对应关系表是在对空调进行数据测试的过程得到的，并在空调出厂前就已经固化在空调运行程序中以方便查询使用。本实施例 中，在数据测试过程中建立第六对应关系表包括以下具体步骤：
首先，获取空调第一次使用时，每个转速区间中点处转速值对应的滤尘网迎风侧压力值和滤尘网背风侧压力值，取两者的差值得到第一压差，并将所述第一压差设为第一数值；
然后经过预设时间后，比如经过一年且滤尘网一直未清洗，获取每个转速区间中点处转速值对应的滤尘网迎风侧压力值和滤尘网背风侧压力值，取两者的差值得到此时的第一压差，并设为第二数值；所述第一数值和第二数值形成该转速区间对应的压差范围；
最后，将所述压差范围进行均分，获取该转速区间下，每个滤尘网脏堵等级对应的压差范围。本实施例中，均分个数根据需要可任意选取，只需满足每个脏堵等级中压力差值有一定跨度即可，比如本实施例中将所述压差范围等分为4个小范围，每个小范围对应一个滤尘网脏堵等级，即将滤尘网脏堵等级分为4级，最后形成第六对应关系表如表4所示：
表4不同转速区间的第六对应关系表
Figure PCTCN2017084605-appb-000005
本实施例步骤3中，滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差为p7-p0，因为转速区间处于d7区间，且假设所述(p7-p0)的值介于ΔP72-ΔP73之间，可以得到 滤尘网的脏堵等级为z3级。本实施例中，全新滤尘网两侧压差近似为0，压差越大滤尘网脏堵越严重，两者呈正比关系。
通过本发明的空调脏堵检测方法获得了滤尘网的脏堵等级后，可以根据不同的滤尘网脏堵等级对空调采取不同的控制方式，比如本实施例中：
当滤尘网脏堵等级或者室内机脏堵等级为z1级时，通过显示板显示脏堵等级；
当滤尘网脏堵等级或者室内机脏堵等级为z2级时，通过显示板显示脏堵等级，同时开机时采用蜂鸣器鸣响提示或者智能语音提示；
当滤尘网脏堵等级或者室内机脏堵等级为z3级时，通过显示板显示脏堵等级，同时采用蜂鸣器在空调开机和/或运行时以短时多次鸣响的方式进行蜂鸣提示和/或进行智能语音提示，驱动清洁装置进行自动清洁；
当滤尘网脏堵等级或者室内机脏堵等级为z4级时，通过显示板显示脏堵等级，采用蜂鸣器在空调开机和/或运行时以短时多次鸣响的方式进行蜂鸣提示和/或进行智能语音提示，并控制空调停止运行；所述控制方式中，脏堵等级越高，滤尘网或者室内机脏堵越严重。
在其他实施例中，通过本发明的空调脏堵检测方法获得了滤尘网的脏堵等级后，还可以进行以下控制：经过第一预设时间后再次检测所述滤尘网脏堵等级或者室内机脏堵等级，当滤尘网脏堵等级或者室内机脏堵等级没有下降时，提升风机转速，对风量进行自动补偿。对风量进行自动步骤包括以下步骤：
S601，根据滤尘网的脏堵等级获取对应的风机转速补偿量；
S602，根据风机转速补偿量获取风机的目标转速；
S603，根据风机的目标转速控制风机运行。
所述S501中，通过查询预先建立的滤尘网脏堵等级与风机转速补偿量的映射表，获取当前脏堵等级对应的风机转速补偿量。或者预先建立风机转速补偿量计算公式，将当前脏堵等级代入对应风机转速补偿量计算公式，生成当前脏堵等级对应的风机转速补偿量。
如图6所示，为与本发明又一个实施例的方法对应的一种基于单个压力传感器的空调脏堵检测系统的结构示意图，包括第一获取模块、第二获取模块、差值计算模块和第三获取模块，所述第一获取模块用于获取当前风机转速下的滤尘网背风侧压力值，或者当前风机转速下的换热器背风侧压力值；所述第三获取模块用于根据当前风机转速获取对应的滤尘网迎风侧压力值；所述差值计算模块用于计算滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差，或者换热器背风侧压力值和滤尘网迎风侧压力值的第二压差；所述第三获取模块用于根据第一压差和当前风机转速获取对应的滤尘网脏堵等级；或者根据第二压差和当前风机转速获取对应的室内机脏堵等级。
优选的，本实施例中还包括控制模块，所述控制模块用于根据不同的滤尘网脏堵等级或者不同的室内机脏堵等级对空调采取不同的控制方式；和/或用于经过第一预设时间后再次检测所述滤尘网脏堵等级或者室内机脏堵等级，并当滤尘网脏堵等级或者室内机脏堵等级没有下降时，提升风机转速，对风量进行自动补偿。
优选的，本实施例中所述第一获取模块包括：转速采集单元，用于采集当前风机转速；设置在滤尘网和换热器之间的第一压力传感器，用于连续采集滤尘网背风侧的压力值，或者设置在换热器背风侧的第二压力传感器，用于连续采集换热器背风侧的压力值；计算单元，用于对连续采集到的滤尘网背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值得到所述滤尘网背风侧压力值或者对连续采集到的换热器背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值得到所述换热器背风侧压力值。
所述第三获取模块包括：第二存储单元，用于存储预先建立的滤尘网迎风侧压力值和不同风机转速的第五对应关系表；第二查询单元，用于查询所述第五对应关系表，获取当前风机转速对应的滤尘网迎风侧压力值。
所述第二获取模块还包括：第三存储单元，用于存储预先建立的滤尘网脏堵等级和不同风机转速、压差的第六对应关系表，或者预先建立的室内机脏堵等级和不同风机转速、压差的第七对应关系表；第三查询单元，用于查询第六对应关系表，获取计算单元计算出的第一压差在当前风机转速下对应的滤尘网脏堵等级，或者查询第七对应关系表，获取计算单元计算出的第二压差在当前风机转速下对应的室内机脏堵等级。
本实施例的空调脏堵检测方法和检测系统利用滤尘网两侧的压差来确定滤尘网的脏堵程度，但滤尘网迎风侧的压力不是开启检测功能实时检测的，而是事前测定好并固化到程序中的。空调真正运行开启检测功能时，只检测滤尘网背风侧压力，然后根据检测时的风机转速查出对应的迎风侧压力，然后作差，根据差值确定脏堵等级。这种检测方法不仅检测结果准确，而且只需采用一个压力传感器，检测方法简单且成本低廉。
如图7所示，为本发明还一个实施例提出的一种基于单个压力传感器对滤尘网进行脏堵检测的方法，包括以下步骤：
步骤1，将当前风机转速调整为预设的目标风机转速，并获取目标风机转速下的滤尘网背风侧压力值；
步骤2，根据目标风机转速获取对应的滤尘网迎风侧压力值；
步骤3，计算滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差；
步骤4，根据第一压差获取对应的滤尘网脏堵等级。
本实施例步骤1中，首先将风机的当前风机转速调整为目标风机转速，比如1080r/min，然后通过压力传感器采集滤尘网背风侧压力值为p0。本实施例中的目标风机转速在空调系 统允许的风机转速范围内，且处于空调最常工作的转速范围内，这样有非常大的几率空调的当前风机转速正处于目标风机转速附近，因此无需对空调的当前风机转速进行调整或者调整幅度较小。在其他实施例中，为了保证滤尘网背风侧压力值的准确性，可以采用多次采集取均值的方法，具体为：保持目标风机转速不变，对通过压力传感器连续采集到的滤尘网背风侧的多个压力值取均值得到所述滤尘网背风侧压力值。比如检测时，保持目标风机转速为1080r/min不变，连续检测5次背风侧压力，取5次压力数据的平均值得到滤尘网背风侧压力值为p0。在其他实施例中，还可以对通过压力传感器连续采集到的滤尘网背风侧的多个压力值去掉最大值和最小值后取均值得到所述滤尘网背风侧压力值，在此不进行详细举例。
本实施例步骤2中，通过查询预先建立的全新滤尘网迎风侧压力值和目标风机转速的第八对应关系表，获取目标风机转速对应的滤尘网迎风侧压力值。本实施例中，第八对应关系表是在对空调进行数据测试的过程得到的，并在空调出厂前就已经固化在空调运行程序中以方便查询使用。同时，本实施例中通过将风机转速固定为目标风机转速，因此只需要在数据测试过程中得到一个目标风机转速对应的一个滤尘网迎风侧压力值即可，无需经过多次检测获取不同风机转速值对应的滤尘网迎风侧压力值，因此建立第八对应关系表的过程更加简单。另一方面，本发明不需要将风机可运行转速划分为多个转速区间，通过每个转速区间中点处转速值对应的滤尘网迎风侧压力值来简单衡量每个转速区间对应的滤尘网迎风侧压力值，因此获得的检测结果也会更加准确。
本实施例中目标风机转速为1080r/min，查询所述第八对应关系表，得到对应的滤尘网迎风侧压力值为P1，可以计算得到步骤3中，滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差为p1-p0。
本实施例的步骤4具体为：查询预先建立的滤尘网脏堵等级和第一压差在目标风机转速下的第九对应关系表，获取步骤3计算出的第一压差在目标风机转速下对应的滤尘网脏堵等级。本实施例中，第九对应关系表是在对空调进行数据测试的过程得到的，并在空调出厂前就已经固化在空调运行程序中以方便查询使用。本实施例中通过将风机转速固定为目标风机转速，因此只需要在数据测试过程中得到目标风机转速下的第六对应关系表即可，检测数据较少，建立第九对应关系表的过程更加简单，同时因为步骤2得到的滤尘网迎风侧压力值更加准确，本步骤中获取的滤尘网脏堵等级结果也会更加准确。具体的本实施例中，在数据测试过程中建立第九对应关系表包括以下具体步骤：
首先，获取空调第一次使用时，目标风机转速对应的滤尘网迎风侧压力值和滤尘网背风侧压力值，取两者的差值得到第一压差，并将所述第一压差设为第一数值；
然后经过预设时间后，比如经过一年且滤尘网一直未清洗，获取目标风机转速对应的 滤尘网迎风侧压力值和滤尘网背风侧压力值，取两者的差值得到此时的第一压差，并设为第二数值；所述第一数值和第二数值形成目标风机转速对应的压差范围；
最后，将所述压差范围进行均分，获取目标风机转速下，每个滤尘网脏堵等级对应的压差范围。本实施例中，均分个数根据需要可任意选取，只需满足每个脏堵等级中压力差值有一定跨度即可，比如本实施例中将所述压差范围等分为4个小范围，每个小范围对应一个滤尘网脏堵等级，即将滤尘网脏堵等级分为4级，最后形成第五对应关系表如表5所示：
表5目标风机转速下的第九对应关系表
Figure PCTCN2017084605-appb-000006
本实施例步骤3中，滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差为p1-p0，假设所述(p1-p0)的值介于ΔP11-ΔP12之间，可以得到滤尘网的脏堵等级为z2级。本实施例中，全新滤尘网两侧压差近似为0，压差越大滤尘网脏堵越严重，两者呈正比关系。
在本发明的其他实施例中，也可以预先设定多个目标风机转速，且第八对应关系表中包括与每个目标风机转速分别对应的滤尘网迎风侧压力值，第九对应关系表中包括每个目标风机转速下，不同第一压差与不同滤尘网脏堵等级的对应关系，这样在应用本发明的方法时，可以根据当前风机转速选择最接近的目标风机转速，尽可能避免对当前风机转速进行调整，不仅控制过程更加简单，而且可以保证脏堵等级检测结果的准确性。
通过本发明的脏堵检测方法获得了滤尘网的脏堵等级后，可以根据不同的滤尘网脏堵等级对空调采取不同的控制方式，或者对风量进行自动补偿，具体方法与可以参照上述实施例中的方法，在此不进行详细说明。
如图8所示，为本发明还一个实施例提出的一种基于单个压力传感器的脏堵检测系统的结构示意图，包括转速调整模块、第一获取模块、第二获取模块、差值计算模块和第三获取模块，所述转速调整模块用于将当前风机转速调整为预设的目标风机转速；所述第一获取模块用于获取目标风机转速下的滤尘网背风侧压力值或者换热器背风侧压力值；所述第三获取模块用于根据目标风机转速获取对应的滤尘网迎风侧压力值；所述差值计算模块用于计算滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差，或者换热器背风侧压力值和滤尘网迎风侧压力值的第二压差；所述第二获取模块，用于根据第一压差获取目标风机转速下的滤尘网脏堵等级；或者根据第二压差获取目标风机转速下的室内机脏堵等级。
优选的，本实施例中还包括控制模块，所述控制模块用于根据不同的滤尘网脏堵等级 或者不同的室内机脏堵等级对空调采取不同的控制方式；和/或用于经过第一预设时间后再次检测所述滤尘网脏堵等级或者室内机脏堵等级，当滤尘网脏堵等级或者室内机脏堵等级没有下降时，提升风机转速，对风量进行自动补偿。
优选的，本实施例中所述第一获取模块包括设置在滤尘网和换热器之间的第一压力传感器，用于连续采集滤尘网背风侧的压力值；或者设置在换热器背风侧的第二压力传感器，用于连续采集换热器背风侧的压力值；计算单元，用于对连续采集到的滤尘网背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值得到所述滤尘网背风侧压力值或者对连续采集到的换热器背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值得到所述换热器背风侧压力值。
所述第三获取模块包括：第二存储单元，用于存储预先建立的滤尘网迎风侧压力值和目标风机转速的第八对应关系表；第二查询单元，用于查询所述第八对应关系表，获取目标风机转速对应的滤尘网迎风侧压力值。所述第二获取模块包括第三存储单元，用于存储预先建立的滤尘网脏堵等级和压差在目标风机转速下的第九对应关系表，或者预先建立的室内机脏堵等级和压差在目标风机转速下的第十对应关系表；第三查询单元，用于查询所述第九对应关系表，获取第一压差在目标风机转速下对应的滤尘网脏堵等级；或者查询所述第十对应关系表，获取第二压差在目标风机转速下对应的室内机脏堵等级。
本实施例的空调脏堵检测方法和检测系统利用滤尘网两侧的压差来确定滤尘网的脏堵程度，但滤尘网迎风侧的压力不是开启检测功能实时检测的，而是事前测定好并固化到程序中的。空调真正运行开启检测功能时，只检测滤尘网背风侧压力，然后根据检测时的风机转速查出对应的迎风侧压力，然后作差，根据差值确定脏堵等级。这种检测方法不仅检测结果准确，而且只需采用一个压力传感器，检测方法简单且成本低廉。
此外，本发明还提供了一种非临时性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述的基于单个压力传感器的空调脏堵检测方法。
如图9所示，为本发明一个实施例提出的一种空调器的结构示意图，包括以上所述的基于单个压力传感器的空调脏堵检测系统。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本发明的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本发明的实施例所属技术领域的技术人员所理解。
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。如，如果用硬件来实现和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。
此外，在本发明各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各 个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。
上述提到的存储介质可以是只读存储器，磁盘或光盘等。尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (26)

  1. 一种基于单个压力传感器的空调脏堵检测方法，其特征在于，包括以下步骤:
    步骤1，获取第一风机转速下的滤尘网背风侧压力值，或者第一风机转速下的换热器背风侧压力值；
    步骤2，根据第一风机转速和滤尘网背风侧压力值获取对应的滤尘网脏堵等级，或者根据第一风机转速和换热器背风侧压力值获取对应的室内机脏堵等级。
  2. 根据权利要求1所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，还包括：
    根据第一风机转速获取对应的滤尘网迎风侧压力值；
    计算滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差，或者换热器背风侧压力值和滤尘网迎风侧压力值的第二压差，以便根据第一压差和第一风机转速获取对应的滤尘网脏堵等级或者根据第二压差和第一风机转速获取对应的室内机脏堵等级。
  3. 根据权利要求1或2所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，还包括：根据不同的滤尘网脏堵等级或者不同的室内机脏堵等级对空调采取不同的控制方式。
  4. 根据权利要求1或2所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，还包括：经过第一预设时间后再次检测所述滤尘网脏堵等级或者室内机脏堵等级，当滤尘网脏堵等级或者室内机脏堵等级没有下降时，提升风机转速，对风量进行自动补偿。
  5. 根据权利要求1～4任一所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，步骤1中，保持第一风机转速不变，对通过压力传感器连续采集到的滤尘网背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值以得到滤尘网背风侧压力值，或者对通过压力传感器连续采集到的换热器背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值以得到换热器背风侧压力值。
  6. 根据权利要求5所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，所述第一风机转速为当前风机转速或者目标风机转速。
  7. 根据权利要求1所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，当第一风机转速为当前风机转速时，步骤2中，查询预先建立的滤尘网脏堵等级和不同风机转速、滤尘网背风侧压力值的第一对应关系表，获取当前滤尘网背风侧压力值在当前风机转速下对应的滤尘网脏堵等级；
    或者查询预先建立的室内机脏堵等级和不同风机转速、换热器背风侧压力值的第二对应关系表，获取当前换热器背风侧压力值在当前风机转速下对应的室内机脏堵等级。
  8. 根据权利要求7所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，步骤2中，建立所述第一对应关系表包括以下步骤:
    将风机可运行转速范围按照预设的转速跨度划分为多个转速区间，其中，所述转速跨度为30～120r/min；
    获取空调第一次使用时，每个转速区间中点处转速值对应的滤尘网背风侧压力值，并将所述滤尘网背风侧压力值设为第一数值；
    经过第二预设时间后，再次获取每个转速区间中点处转速值对应的滤尘网背风侧压力值，并将所述滤尘网背风侧压力值设为第二数值，其中，所述第一数值和第二数值形成该转速区间对应的滤尘网背风侧压力值范围；
    将所述滤尘网背风侧压力值范围按照预设的脏堵等级个数进行均分，获取该转速区间下，每个滤尘网脏堵等级对应的滤尘网背风侧压力值范围。
  9. 根据权利要求7所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，步骤2中，建立所述第二对应关系表包括以下步骤：
    将风机可运行转速范围按照预设的转速跨度划分为多个转速区间，其中，所述转速跨度为30～120r/min；
    获取空调第一次使用时，每个转速区间中点处转速值对应的换热器背风侧压力值，并将所述换热器背风侧压力值设为第三数值；
    经过第三预设时间后，再次获取每个转速区间中点处转速值对应的换热器背风侧压力值，并将所述换热器背风侧压力值设为第四数值，其中，所述第三数值和第四数值形成该转速区间对应的换热器背风侧压力值范围；
    将所述换热器背风侧压力值范围按照预设的脏堵等级个数进行均分，获取该转速区间下，每个室内机脏堵等级对应的换热器背风侧压力值范围。
  10. 根据权利要求1所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，当第一风机转速为目标风机转速时，步骤2中，查询预先建立的目标风机转速下滤尘网脏堵等级和滤尘网背风侧压力值的第三对应关系表，获取步骤1计算出的所述滤尘网背风侧压力值对应的滤尘网脏堵等级；
    或者查询预先建立的目标风机转速下室内机脏堵等级和换热器背风侧压力值的第四对应关系表，获取步骤1计算出的所述换热器背风侧压力值对应的室内机脏堵等级。
  11. 根据权利要求10所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，步骤2中，建立所述第三对应关系表包括以下步骤：
    获取空调第一次使用时，目标风机转速对应的滤尘网背风侧压力值，并将所述滤尘网背风侧压力值设为第五数值；
    经过第四预设时间后，再次获取目标风机转速对应的滤尘网背风侧压力值，并将所述滤尘网背风侧压力值设为第六数值，其中，所述第五数值和第六数值形成目标风机转速对应的滤尘网背风侧压力值范围；
    将所述滤尘网背风侧压力值范围按照预设的脏堵等级个数进行均分，获取目标风机转速下，每个滤尘网脏堵等级对应的滤尘网背风侧压力值范围。
  12. 根据权利要求10所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，步骤2中，建立所述第四对应关系表包括以下步骤：
    获取空调第一次使用时，目标风机转速对应的换热器背风侧压力值，并将所述换热器背风侧压力值设为第七数值；
    经过第五预设时间后，再次获取目标风机转速对应的换热器背风侧压力值，并将所述换热器背风侧压力值设为第八数值，其中，所述第七数值和第八数值形成目标风机转速对应的换热器背风侧压力值范围；
    将所述换热器背风侧压力值范围按照预设的脏堵等级个数进行均分，获取目标风机转速下，每个室内机脏堵等级对应的换热器背风侧压力值范围。
  13. 根据权利要求2所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，当第一风机转速为当前风机转速时，所述根据第一风机转速获取对应的滤尘网迎风侧压力值包括：
    通过查询预先建立的滤尘网迎风侧压力值和不同风机转速的第五对应关系表，获取当前风机转速对应的滤尘网迎风侧压力值，其中建立所述第五对应关系表具体为：
    将风机可运行转速范围按照预设的转速跨度划分为多个转速区间，其中，所述转速跨度为30～120r/min；
    获取多个转速区间中的每个转速区间对应的滤尘网迎风侧压力值，建立第五对应关系表；
    所述滤尘网迎风侧压力值为转速区间中点处转速值对应的滤尘网迎风侧压力值，或者为转速区间等分分布的多个转速值分别对应的滤尘网迎风侧压力值的均值。
  14. 根据权利要求13所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，根据第一压差和第一风机转速获取对应的滤尘网脏堵等级或者根据第二压差和第一风机转速获取对应的室内机脏堵等级，具体为：
    查询预先建立的滤尘网脏堵等级和不同风机转速、压差的第六对应关系表，获取第一压差在当前风机转速下对应的滤尘网脏堵等级；
    或者查询预先建立的室内机脏堵等级和不同风机转速、压差的第七对应关系表，获取第二压差在当前风机转速下对应的室内机脏堵等级。
  15. 根据权利要求2所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，当第一风机转速为目标风机转速时，所述根据第一风机转速获取对应的滤尘网迎风侧压力值包括：
    通过查询预先建立的滤尘网迎风侧压力值和目标风机转速的第八对应关系表，获取目标风机转速对应的滤尘网迎风侧压力值。
  16. 根据权利要求15所述的基于单个压力传感器的空调脏堵检测方法，其特征在于，根据第一压差和第一风机转速获取对应的滤尘网脏堵等级或者根据第二压差和第一风机转速获取对应的室内机脏堵等级，具体为：
    查询预先建立的目标风机转速下滤尘网脏堵等级和压差的第九对应关系表，获取第一压差对应的滤尘网脏堵等级；
    或者查询预先建立的目标风机转速下室内机脏堵等级和压差的第十对应关系表，获取第二压差对应的室内机脏堵等级。
  17. 一种非临时性计算机可读存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现如权利要求1～16中任一所述的基于单个压力传感器的空调脏堵检测方法。
  18. 一种基于单个压力传感器的空调脏堵检测系统，其特征在于，包括第一获取模块和第二获取模块，
    所述第一获取模块用于获取第一风机转速下的滤尘网背风侧压力值，或者第一风机转速下的换热器背风侧压力值；
    所述第二获取模块用于根据第一风机转速和滤尘网背风侧压力值获取对应的滤尘网脏堵等级，或者根据第一风机转速和换热器背风侧压力值获取对应的室内机脏堵等级。
  19. 根据权利要求18所述的基于单个压力传感器的空调脏堵检测系统，其特征在于，还包括差值计算模块和第三获取模块，
    所述第三获取模块用于根据第一风机转速获取对应的滤尘网迎风侧压力值；
    所述差值计算模块用于计算滤尘网背风侧压力值和滤尘网迎风侧压力值的第一压差，或者换热器背风侧压力值和滤尘网迎风侧压力值的第二压差，以便所述第二获取模块用于根据第一压差和第一风机转速获取对应的滤尘网脏堵等级或者根据第二压差和第一风机转速获取对应的室内机脏堵等级。
  20. 根据权利要求18或19所述的基于单个压力传感器的空调脏堵检测系统，其特征在于，还包括控制模块，
    所述控制模块用于根据不同的滤尘网脏堵等级或者不同的室内机脏堵等级对空调采取不同的控制方式，和/或用于经过第一预设时间后再次检测所述滤尘网脏堵等级或者室内机 脏堵等级，并当滤尘网脏堵等级或者室内机脏堵等级没有下降时，提升风机转速，对风量进行自动补偿。
  21. 根据权利要求18～20任一所述的基于单个压力传感器的空调脏堵检测系统，其特征在于，所述第一获取模块包括：
    设置在滤尘网和换热器之间的第一压力传感器，用于连续采集第一风机转速下滤尘网背风侧的压力值；或者设置在换热器背风侧的第二压力传感器，用于连续采集第一风机转速下换热器背风侧的压力值；
    计算单元，用于对连续采集到的滤尘网背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值以得到滤尘网背风侧压力值或者对连续采集到的换热器背风侧的多个压力值直接取均值或者去掉最大值、最小值后取均值以得到换热器背风侧压力值。
  22. 根据权利要求21所述的基于单个压力传感器的空调脏堵检测系统，其特征在于，所述第一风机转速为当前风机转速或者目标风机转速。
  23. 根据权利要求22所述的基于单个压力传感器的空调脏堵检测系统，其特征在于，所述第二获取模块包括：
    第一存储单元，用于存储预先建立的滤尘网脏堵等级和不同风机转速、滤尘网背风侧压力值的第一对应关系表，或者室内机脏堵等级和不同风机转速、换热器背风侧压力值的第二对应关系表；或者用于存储预先建立的目标风机转速下滤尘网脏堵等级和滤尘网背风侧压力值的第三对应关系表，或者目标风机转速下室内机脏堵等级和换热器背风侧压力值的第四对应关系表；
    第一查询单元，用于查询所述第一对应关系表，获取所述滤尘网背风侧压力值在当前风机转速下对应的滤尘网脏堵等级，或者查询第二对应关系表，获取所述换热器背风侧压力值在当前风机转速下对应的室内机脏堵等级；或者用于查询所述第三对应关系表，获取所述滤尘网背风侧压力值在目标风机转速下对应的滤尘网脏堵等级，或者查询第四对应关系表，获取所述换热器背风侧压力值在目标风机转速下对应的室内机脏堵等级。
  24. 根据权利要求19所述的基于单个压力传感器的空调脏堵检测系统，其特征在于，所述第三获取模块包括：
    第二存储单元，用于存储预先建立的滤尘网迎风侧压力值和不同风机转速的第五对应关系表，或者用于存储预先建立的滤尘网迎风侧压力值和目标风机转速的第八对应关系表；
    第二查询单元，用于查询所述第五对应关系表，获取当前风机转速对应的滤尘网迎风侧压力值，或者用于查询所述第八对应关系表，获取目标风机转速对应的滤尘网迎风侧压力值。
  25. 根据权利要求24所述的基于单个压力传感器的空调脏堵检测系统，其特征在于， 所述第二获取模块还包括：
    第三存储单元，用于存储预先建立的滤尘网脏堵等级和不同风机转速、压差的第六对应关系表，或者预先建立的室内机脏堵等级和不同风机转速、压差的第七对应关系表；或者用于存储预先建立的滤尘网脏堵等级和压差在目标风机转速下的第九对应关系表，或者预先建立的室内机脏堵等级和压差在目标风机转速下的第十对应关系表；
    第三查询单元，用于查询第六对应关系表，获取所述第一压差在当前风机转速下对应的滤尘网脏堵等级，或者查询第七对应关系表，获取所述第二压差在当前风机转速下对应的室内机脏堵等级；或者用于查询所述第九对应关系表，获取第一压差在目标风机转速下对应的滤尘网脏堵等级，或者查询所述第十对应关系表，获取第二压差在目标风机转速下对应的室内机脏堵等级。
  26. 一种空调器，其特征在于，包括权利要求18～25任一所述的基于单个压力传感器的空调脏堵检测系统。
PCT/CN2017/084605 2016-08-31 2017-05-16 基于单个压力传感器的空调脏堵检测方法、系统和空调器 WO2018040616A1 (zh)

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