WO2020175531A1 - 空気調和機 - Google Patents
空気調和機 Download PDFInfo
- Publication number
- WO2020175531A1 WO2020175531A1 PCT/JP2020/007663 JP2020007663W WO2020175531A1 WO 2020175531 A1 WO2020175531 A1 WO 2020175531A1 JP 2020007663 W JP2020007663 W JP 2020007663W WO 2020175531 A1 WO2020175531 A1 WO 2020175531A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air conditioner
- unit
- dirt
- cooling operation
- control unit
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
-
- 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
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/90—Cleaning of purification apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/50—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for air conditioning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/228—Treatment of condensate, e.g. sterilising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/20—Details or features not otherwise provided for mounted in or close to a window
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
Definitions
- Air conditioner Air conditioner
- the present disclosure relates to an air conditioner.
- Patent Document 1 As an air conditioner, the technique described in Patent Document 1 is known.
- the technique of Patent Document 1 acquires an image of a filter, performs binarization processing on each pixel forming the image, divides the binarized image into predetermined blocks, and uses the data about the blocks. , Find the diagnostic value.
- Patent Document 1 Japanese Patent Laid-Open No. 20000_2929606
- An air conditioner that solves this problem is an air conditioner that can perform a cooling operation, and includes a control unit that controls a drive unit of the air conditioner, and the control unit is a non-cooling operation timing. Based on whether or not there is a determination unit that determines whether or not the air conditioner fouling suppression operation is necessary, and a setting that sets the dew condensation operation condition that generates dew condensation water on the surface of the indoor heat exchanger of the air conditioner. And a dirt suppression operation of the air conditioner according to the dew condensation operation condition set by the setting unit based on the necessity determination result of the determination unit.
- the indoor heat exchanger is condensed, and water is collected in the drain pan. Water is drained from the drain pan. During the cooling operation period, the condensed water is used for indoor heat exchange. ⁇ 2020/175531 2 ⁇ (: 170? 2020 /007663
- the control unit performs the dirt suppression operation based on the result of whether or not it is the non-cooling operation time, and therefore it is possible to suppress the dirt suppression operation from being performed at an inappropriate time. As a result, the accumulation of dirt during the non-cooling operation period can be suppressed.
- the determination unit determines whether or not it is the non-cooling operation time based on at least one of the operation information and the environmental information.
- the non-cooling operation timing can be appropriately determined.
- the determination unit further determines a device state of the air conditioner, and determines whether or not the stain suppression operation is necessary based on a determination result of the device state. According to this configuration, since the stain suppression operation is performed only when the stain suppression operation is necessary, it is possible to reduce wasteful stain suppression operation.
- the determining unit acquires at least one dirt amount of a drain pan, a filter, and an indoor heat exchanger as a device state of the air conditioner, and the dirt amount based on the dirt amount.
- the necessity of suppression operation is determined. With this configuration, it is possible to suppress the accumulation of dirt on at least one of the drain pan, the filter, and the indoor heat exchanger.
- FIG. 1 A schematic view of an air conditioning system including an air conditioner.
- FIG. 1 A plan view of the internal structure of the indoor unit.
- FIG. 4 A diagram showing the range of adhered dirt and turbidity in the hue circle.
- FIG. 5 A diagram showing a photographed image. ⁇ 2020/175531 3 boxes (: 170? 2020 /007663
- FIG. 6 Diagram showing a mask.
- FIG. 8 is a diagram showing matching between a template captured image and a captured image.
- FIG. 9 is a diagram showing the relationship between template masks and masks.
- the air conditioner 1 performs at least cooling operation. Preferably, the air conditioner 1 performs cooling operation and heating operation.
- the air conditioner 1 includes a control unit 2. Specifically, the air conditioner 1 includes a refrigerant circuit ⁇ 3.
- the refrigerant circuit ⁇ 3 includes the indoor heat exchanger 13 of the indoor unit 11, the outdoor heat exchanger 22 of the outdoor unit 21, the expansion valve 23, and the compressor as the drive unit 24. With.
- the control unit 2 controls the expansion valve 23 and the drive unit 24.
- Control unit 2 may include one or more 0 II (Cen
- the control unit 2 includes 1) one or more processors that execute various processes according to a computer program (software), and 2) an application-specific integrated circuit (3 I 0 etc.) that executes at least part of the processes. It can be configured as a circuit including one or more dedicated hardware circuits of, or 3) a combination thereof.
- the processor is ⁇ II and
- the memory stores program code or instructions configured to cause the II to perform processing.
- Memory or computer-readable media includes any available media that can be accessed by a general purpose or special purpose computer.
- the control unit 2 controls the drive unit 24 so that the temperature of the air becomes the target temperature in the cold-house operation.
- the target temperature is the indoor target temperature set by the user who uses the air conditioner 1.
- the control unit 2 further executes a dirt suppression operation.
- the fouling control operation is an operation for controlling fouling of the indoor unit 11.
- the dirt control operation is a type of cooling operation.
- the dirt suppression operation is performed in the indoor unit 1 1 ⁇ 2020/175531 4 ⁇ (: 170? 2020 /007663
- the control unit 2 controls the indoor heat exchanger 1 of the indoor unit 11 in the dirt suppression operation.
- control unit 2 includes a determination unit 3 and a setting unit 4.
- the control unit 2 executes the pollution control operation of the air conditioner 1 according to the condensation operation condition set by the setting unit 4 based on the necessity determination result of the determination unit 3.
- the setting unit 4 sets the dew condensation operating condition.
- the dew condensation operating condition is an operating condition for generating dew condensation water on the surface of the indoor heat exchanger 13 of the air conditioner 1.
- the dew condensation operating condition is an operating condition that lowers the surface temperature of the indoor heat exchanger 13 to the dew point temperature of indoor air or lower.
- the dew condensation operating condition includes, for example, the target temperature of the refrigerant vaporization temperature. In the environment where defrosting is performed, the target temperature of the refrigerant evaporation temperature as the dew condensation operating condition is set to a temperature lower than the refrigerant evaporation temperature at the time of defrosting.
- the dew condensation operating condition may include the rotation speed of the fan 14.
- the setting unit 4 sets the above-described condensation operation condition when the determination unit 3 determines that the dirt suppression operation is necessary.
- the determination unit 3 determines whether or not the pollution control operation of the air conditioner 1 is necessary, based on whether or not it is the non-cooling operation time.
- the non-cooling operation time is the time when the cooling operation is not performed.
- the air conditioner 1 is unlikely to get dirty due to the presence of condensed water.
- the determination unit 3 determines that the air pollution control operation of the air conditioner 1 is necessary.
- Judgment unit 3 is for non-cooling ⁇ 2020/175 5531 5 (: 170? 2020/007663
- the semi-fixing unit 3 determines whether or not it is the non-cooling operation time based on at least one of the operation information and the environment information.
- the operation information is information indicating which one of the cooling operation and the heating operation is being executed.
- the environmental information is the surrounding environment in which the air conditioner 1 is placed, and particularly the environmental information regarding temperature.
- the determination unit 3 determines whether or not it is the non-cooling operation time, based on at least one of the following conditions (3) to (6).
- the conditions (3) to (6) are the conditions for establishing the non-cooling operation time.
- the cooling operation is not performed for a predetermined period.
- the cooling operation switch on the remote control operated by the user has not been pressed for the predetermined period.
- the predetermined period is, for example, one week. If the cooling operation is not performed for one week, it is estimated that the cooling operation is not performed.
- the determination unit 3 periodically determines whether the condition (3) is satisfied by acquiring the cooling operation information or the command from the remote controller from the control unit 2.
- the heating operation is carried out for a predetermined time.
- the predetermined time is, for example, one hour.
- the predetermined period is, for example, one day. If the heating operation is performed for over 1 hour, it is estimated that the cooling operation is not being performed. Alternatively, the heating operation switch must be pressed at least once during the specified period on the remote control operated by the user. If the heating operation is performed once a day, it is estimated that the cooling operation is not being performed.
- the determining unit 3 periodically determines whether the condition (13) is satisfied by acquiring the heating operation information or the command from the remote controller from the control unit 2.
- the date ( ⁇ ) corresponds to the non-cooling operation period.
- the non-cooling operation period is set in advance.
- the non-cooling operation period is set, for example, from January to April.
- Judgment ⁇ 2020/175531 6 ⁇ (: 170? 2020 /007663
- Part 3 has calendar information that defines the non-cooling operation period, and determines whether the condition ( ⁇ ) is satisfied or not depending on whether the date corresponds to the non-cooling operation period. ..
- the indoor target temperature is within the set temperature range for winter. If the indoor target temperature is within the set temperature range for winter, it is estimated that the cooling operation is not being performed.
- the judgment unit 3 periodically judges whether or not the condition ( ⁇ 1) is satisfied by acquiring information on the set temperature range from the remote controller.
- ( ⁇ ) _ The average outdoor temperature on a day is below a predetermined temperature.
- the predetermined temperature is, for example, 12 degrees.
- the determination unit 3 determines whether or not the condition ( ⁇ ) is satisfied by acquiring the outdoor temperature.
- the determination unit 3 determines the device state of the air conditioner 1.
- the determination unit 3 determines whether or not the stain suppression operation is necessary based on the determination result of the device state.
- the equipment condition of the air conditioner 1 indicates the condition of dirt.
- the control unit 2 judges that the dirt suppression operation is necessary.
- the control unit 2 determines that the pollution control operation is unnecessary when the amount of contamination of the device of the air conditioner 1 is less than or equal to the determination value.
- the control unit 2 acquires, as the device state of the air conditioner 1, the amount of dirt on at least one of the drain pan 16, the filter, and the indoor heat exchanger 13. The control unit 2 determines whether or not the stain suppression operation is necessary based on the stain amount. For example, the amount of dirt is detected by a dirt detector 28 described later. An example of the amount of dirt is the "progress of dirt" calculated by a dirt detector 28 described later. In one example, the control unit 2 acquires the amount of dirt from the calculation unit 32 of the dirt detection device 28. As will be described later, when the calculation unit 32 is provided on the network 1 ⁇ 1, the control unit 2 sends information about the dirt from the calculation unit 32 via the network! Amount).
- the control unit 2 determines that the stain suppression operation for the indoor unit 11 is required, the cooling operation that does not impair the indoor comfort by the stain suppression operation. ⁇ 2020/175 5531 7 (: 170? 2020/007663
- the fouling suppression operation is performed during the non-cooling operation period, but when the fouling suppression operation is executed, the indoor side is in the cooling operation and the temperature of the room falls. If the dirt control operation is executed when there are people in the room, comfort in the room is reduced. In order to suppress this, the control unit 2 executes the dirt suppression operation when the cooling operation permission condition is satisfied, as described above. Allowable conditions for cooling operation are, for example, that there are no people in the room where the indoor unit 11 is installed, that there are no people in the room where the indoor unit 11 is installed, and the indoor temperature. Is a large deviation from the target temperature and is higher than the target temperature.
- the dirt detection device 28 detects dirt on the object 29.
- the dirt in this embodiment includes at least one of adhered dirt and turbidity of water. In the detection of dirt, there are cases in which adhered dirt is detected, cases in which turbidity is detected, and cases in which adhered dirt and turbidity are not distinguished.
- a preferred example of the dirt detection target 29 is a container for storing water and a device to which water is easily attached.
- the dirt detection target 29 is the drain pan 16 of the indoor unit 11 of the air conditioner 1, the indoor heat exchanger 13 of the indoor unit 11 and the filter of the air conditioner 1.
- the dirt detection device 28 detects dirt on the drain pan 16 of the indoor unit 11 of the air conditioner 1.
- the object 29 is the drain pan 16.
- the dirt detection device 28 includes a control unit 30.
- the control unit 30 acquires the captured image 40 of the object 29.
- the control unit 30 calculates the degree of stain progress based on the color components of the captured image 40 of the object 29.
- the control unit 30 has one or more ⁇ li ( ⁇ 6 ⁇ 1; ⁇ 31 ⁇ 00633.1 ⁇ 11 ⁇ 1;)
- the control unit 30 is 1) one or more processors that execute various processes according to a computer program (software), and 2) an application-specific integrated circuit that executes at least some of the various processes. (1 or more such as 3 I ⁇ ⁇ 2020/175531 8 ⁇ (: 170? 2020 /007663
- the processor includes ⁇ II and memory such as [3 ⁇ 41 ⁇ /1 and [3 ⁇ 41 ⁇ /1, and the memory contains program code or instructions configured to cause the 0II to perform processing. Is stored.
- Memory or computer-readable media includes any available media that can be accessed by a general purpose or special purpose computer.
- the control unit 30 calculates the degree of contamination based on the acquisition unit 31 that acquires the captured image 40 of the target object 29 and the color components of the captured image 40 of the target object 29. And part 32.
- the acquisition unit 31 is connected to the camera 36. Acquisition part 3 1 and calculation part
- the 3 2 may be housed in a case and packaged as one device, and as described below, the acquisition unit 3 1 and the calculation unit 3 2 are connected to the network and are connected to each other. The installation locations may be distributed.
- the constituent elements of the control unit 30 according to the present embodiment are dispersed in the network ! ⁇ 1.
- the acquisition unit 31 is provided in the air conditioner 1 itself or in the vicinity of the air conditioner 1.
- the acquisition unit 31 acquires the captured image 40 sent from the camera 36,
- the acquisition unit 31 holds the identification information of the object 29 or the device including the object 29.
- the acquisition unit 31 holds the identification information of the air conditioner 1.
- the acquisition unit 31 holds the position information of the object 29 or the device including the object 29.
- the position information includes the location (latitude and longitude, or address) of the object 29.
- the acquisition unit 31 holds the position information of the air conditioner 1 including the drain pan 16.
- the acquisition unit 31 holds the usage information of the device including the object 29.
- the usage information is information on the usage of the room in which the object 29 is installed, and includes, for example, the type of store.
- the acquisition unit 31 acquires identification information, position information, and usage information by input operation.
- the acquisition unit 31 is connected to the communication unit 33.
- the communication unit 33 may be a component of the “Sai I” control unit 30.
- the communication unit 33 controls the communication between the acquisition unit 3 1 and the calculation unit 3 2.
- Communications department ⁇ 2020/175531 9 boxes (: 170? 2020 /007663
- the communication unit 33 outputs the photographed image 40 held in the acquisition unit 3 1 to the calculation unit 3 2 based on the internal command and the external command.
- the communication unit 33 outputs at least one of the identification information, the position information, and the usage information held in the acquisition unit 31 to the calculation unit 32 based on the internal command and the external command.
- the internal command is a command formed at a preset time.
- the internal command is formed by the internal circuit of the communication unit 33 when a predetermined condition (for example, the reception sensitivity in wireless is higher than a predetermined value) is satisfied, or is formed periodically.
- the external command is a command based on a request from the calculation unit 32 of the cloud server 35.
- the communication unit 33 and the acquisition unit 31 may be housed in one case.
- the calculation unit 32 is not limited in installation location as long as the information can be obtained from the acquisition unit 31.
- the calculation unit 32 is provided in the cloud server 35 connected to the network 1 ⁇ !.
- the dirt detection device 28 may be a component of the air conditioning system 3.
- the air conditioning system 3 includes a dirt detection device 28 and an air conditioner 1.
- the air conditioner 1 is connected to the network 1 ⁇ ! via the communication unit 33 of the control unit 30 of the dirt detection device 28 or directly without the communication unit 33.
- FIG. 2 is a plan view of the internal structure of the indoor unit 11 when the upper wall of the indoor unit 11 of the air conditioner 1 is removed.
- Fig. 3 is a side view of the internal structure of the indoor unit 11 as seen from the side wall of the indoor unit 11 of the air conditioner 1.
- the model of the air conditioner 1 that is the target of the dirt inspection is not limited.
- the Amai embedded air conditioner 1 is the target of the dirt inspection.
- the indoor unit 11 of the ceiling-embedded air conditioner 1 requires labor for internal inspection. Therefore, camera monitoring of the indoor unit 11 of the ceiling-embedded air conditioner 1 contributes to the improvement of maintenance work efficiency. Therefore, in this embodiment, the indoor unit 11 of the air conditioner 1 which is a ceiling-embedded type and is connected to the duct behind the ceiling will be described.
- the indoor unit 1 1 is connected to the outdoor unit 2 1 via a refrigerant pipe. Connected to.
- the indoor unit 11 is installed behind the ceiling.
- the control unit 2 and the indoor heat exchanger 13 described above are housed in a box-shaped case 18.
- the case 18 further accommodates a fan 14, a fan 15 for rotating the fan 14, a drain pan 16 and a drain pump 17 for discharging the water in the drain pan 16.
- the drain pan 16 is arranged below the indoor heat exchanger 13.
- the case 18 is provided with a suction port 18a and a blowout port 18b.
- the color of the wall of the drain pan 16 is preferably a color in which dirt is conspicuous.
- the color of the wall of the drain pan 16 is preferably white or a color close to white.
- the case 18 is provided with an inspection lid 18c for inspecting the inside of the case 18.
- the inspection lid 18c is provided near the drain pan 16 and the drain pump 17.
- the camera 36 is mounted inside the inspection lid 18c.
- the camera 36 is attached to the inspection lid 18c so that at least a part of the bottom of the drain pan 16 is photographed.
- the camera 36 includes a photographing unit 37 and a photographing control unit 38 (see FIG. 1).
- the photographing unit 37 photographs a part of the drain pan 16 at a timing controlled by the photographing control unit 38 and forms a photographed image 40.
- the imaging control unit 38 includes one or a plurality of CPUs (Central Processing Units) or MPUs (Micro Processing Units).
- the image capturing control unit 38 includes 1) one or more processors that execute various processes according to a computer program (software), and 2) an application-specific integrated circuit (AS IC) that executes at least part of the various processes. Can be configured as a circuit including one or more dedicated hardware circuits such as, or 3) a combination thereof.
- a processor includes CPU and memory such as RAM and ROM, which stores program code or instructions configured to cause the CPU to perform processing.
- Memory or computer-readable media includes any available media that can be accessed by a general purpose or special purpose computer.
- the photographing unit 37 photographs the drain pan 16 under the condition of the still water surface. ⁇ 2020/175531 1 1 ⁇ (: 170? 2020 /007663
- the imaging control unit 38 determines whether or not the condition of the still water surface condition is satisfied.
- the still water surface state means a state in which the water surface in the drain pan 16 does not move.
- the photographing control unit 38 determines whether or not the surface is still water, and the photographed images obtained by the operation of the drain pump 17 and the rotation of the fan 14 and the comparison of a plurality of consecutive photographed images 40. Judge by at least one of 40 changes.
- the photographing control unit 38 gives a photographing instruction to the photographing unit 37 when the condition of the still water surface condition is satisfied. For example, the imaging control unit 38 determines the condition of the still water surface condition when detecting the adhered dirt.
- the imaging unit 37 captures an image of the drain pan 16 under running water conditions.
- the imaging control unit 38 determines whether or not the condition of the running water condition is satisfied.
- the running water state means a state in which the water in the drain pan 16 moves.
- the shooting control unit 38 determines whether or not there is running water, the change of the shot image 40 obtained by the operation of the drain pump 17 and the comparison of a plurality of shot images 40 taken continuously. , Judge by at least one.
- the photographing control unit 38 issues a photographing instruction to the photographing unit 37 when the condition of the running water condition is satisfied.
- the imaging control unit 38 determines the condition of running water when detecting turbidity as dirt.
- the photographing control unit 38 controls the photographing timing as described above. Further, the photographing control unit 38 sends the photographed image 40 formed by the photographing unit 37 to the acquisition unit 31.
- the imaging control unit 38 sends the captured image 40 to the acquisition unit 31 based on an internal command.
- the internal command is a command set in advance.
- the captured image 40 is transmitted to the calculation unit 32 as follows.
- the captured image 40 formed by the capturing unit 37 of the camera 36 is output to the acquisition unit 31 and stored in the storage unit 31 of the acquisition unit 31.
- the captured image 40 stored in the acquisition unit 31 is transmitted to the calculation unit 32 of the cloud server 35 via the network 1 ⁇ ! by an internal command or an external command of the communication unit 33.
- the calculation unit 32 of the control unit 30 will be described with reference to FIG.
- the calculation unit 32 digitizes the contamination of the object 29 at the user's command or at a predetermined timing. Specifically, the calculation unit 3 2 uses the captured image 4 of the drain pan 16 ⁇ 2020/175531 12 units (: 170? 2020 /007663
- the hue is calculated for each pixel forming the circle. If the captured image 40 is an image formed by the ⁇ format, the calculation unit 32 converts the captured image 40 according to the conversion formula from the 3 ⁇ 4 ⁇ mi format to the 1 to 13 format. Then, the hue (1 to 1) value is obtained for each pixel.
- the stain on the drain pan 16 will be described. Analysis of the stain hue of the drain pan 16 reveals that the stain has a reddish yellow-green color (hue 10 to 30) or green (hue 30 to 60). The stain hue is in the range of 10 to 60. The adhered stain is green or a color around green, and the hue of the adhered stain is in the range of 30 to 60. The haze is yellow-green, which is close to red, and the hue of the haze is
- the color of the attached stain and turbidity of the drain pan 16 is different from that of the wall of the drain pan 16. Therefore, the stain on the drain pan 16 can be detected based on the hue. Further, since the hue of adhered dirt and the hue of turbidity are different, it is possible to distinguish adhered dirt and turbidity by the hue.
- a target range 4 03 that is a target for detecting dirt on the captured image 40.
- the captured image 40 may include a part of the indoor heat exchanger 13 and a part of the drain pump 17.
- area indoor heat exchanger 1 3 and Dorenpon flop 1 7 has been removed is scoped 4 0 3 the detection of soiling.
- the target range 43 0 is set in advance.
- the calculation unit 32 detects dirt in the target range 40 3.
- FIG. 5 is a diagram showing a photographed image 40.
- FIG. 6 is a diagram showing the mask 41.
- FIG. 7 is a diagram of a captured image 40 with the mask 41 overlapped. In Fig. 7, the dark dot area indicates the area of adhered dirt, and the light dot area indicates the turbid area. In the photographed image 40 of Fig. 7, it is not possible to visually distinguish the area of adhered dirt and the area of thin dots visually.
- FIG. 8 is a diagram showing matching between the template captured image 4 3 and the captured image 40.
- FIG. 9 is a diagram showing the relationship between the template mask 42 and the mask 41. ⁇ 2020/175531 13 ⁇ (: 170? 2020 /007663
- the calculation unit 32 holds the mask 41 for superimposing on the captured image 40.
- the areas other than the target range 403 of the captured image 40 are black with no hue.
- the target range 4 0 3 of the captured image 40 is transparent.
- the captured image 40 with the mask 41 overlapped is black except in the target range 40 3. Since the hue of black is not associated, the area of the hue of the captured image 40 is calculated as ⁇ . Therefore, when the calculation unit 32 calculates the area of each hue in the entire captured image 40 with the mask 41 overlapped, as a result, the calculation results for each hue within the target range 403 of the captured image 40.
- the area is calculated. By using the mask 41 in this way, it becomes easy to calculate the area of each hue in the target range 4033 of the captured image 40.
- the calculation unit 32 holds a template shot image 43 prepared in advance for each model of the air conditioner 1 and a template mask 42 prepared in advance for each model of the air conditioner 1. To do. Even if the air conditioner 1 is the same model, the position of the drain pan 16 in the captured image 40 varies depending on the mounting variation of the camera 36. For this reason, in order to accurately detect dirt on the drain pan 16 that is the target of dirt detection, it is necessary to use the mask 41 matched to the drain pan 16 of each air conditioner 1. preferable. For example, the calculation unit 32 matches the feature points of the template shot image 43 with the feature points of the shot image 40 targeted for dirt detection (see Fig. 8), and based on the matching result, the projection is performed. Form a transformation matrix. The calculation unit 32 forms the mask 41 by transforming the template mask 42 by the formed projective transformation matrix (see Fig. 9).
- the calculation unit 32 calculates the degree of progress of stains as follows. In one example, dirt progression is assessed by the extent of dirt area.
- the calculation section 3 calculates the progress degree of soiling To do. Specifically, the calculation unit 32 is based on the template mask 42 as described above. ⁇ 2020/175531 14 ⁇ (: 170? 2020 /007663
- the calculation unit 32 calculates the area of the region within the predetermined hue range in the target range 403 based on the captured image 40 with the mask 41 overlapped. For example, when calculating the area of adhered dirt, the calculation unit 32 counts the number of pixels having a hue of 30 or more and 60 or less in the captured image 40 with the mask 41 overlapped. , Determine the area of adhered dirt. When calculating the area of turbidity, the calculation unit 3 2 counts the number of pixels having a hue of 10 or more and less than 30 with respect to the captured image 40 with the mask 41 overlapped. Find the area.
- the calculation unit 32 may calculate the total of the area of the adhered dirt and the area of the turbidity as the area of the dirt.
- the calculator 32 outputs the area of dirt as the degree of dirt progress.
- the calculation unit 32 may output the area of adhered dirt as the “progress of adhered dirt”, or the calculator 32 may output the area of turbidity as “progress of turbidity”.
- calculation unit 3 2 a surface product of the target range 4 0 3 photographed image 4 0, is within a predetermined hue range in the target range 4 0 3 of the captured image 4 0
- the degree of contamination progress is calculated based on the area ratio to the area of the area. In this case, the contamination progress is shown as a percentage. When the stain progress is 100%, it indicates that the stain is most advanced.
- the air conditioner 1 becomes dirty due to various factors. Dirt builds up in the indoor heat exchanger 13 and drain pan 16 due to air pollution. In addition, when water stays in the drain pan 16, bacteria grow and stains on the drain pan 16 expand. If the indoor heat exchanger 13 and the drain pan 16 become more dirty, the drain pump 17 will be easily clogged. It has been found that the spread of dirt is particularly during non-cooling operation time. During the cooling operation time, the dew condensation water causes the indoor heat exchanger 13 and the drain pan 16 of the indoor unit 11 to be cleaned. On the other hand, during the non-cooling operation period, since it is difficult for condensed water to be generated, the indoor heat exchanger 13 and the drain pan 16 of the indoor unit 11 are easily contaminated. In particular, when the non-cooling operation period has passed and immediately before the start of the cooling operation, the drain pan 1 6 and the indoor heat exchanger 1 3 are contaminated. ⁇ 2020/175531 15 ⁇ (: 170? 2020/007663
- Deposits may be seen.
- the cooling operation is performed in such a situation, the contaminated deposits are swept away all at once, and the drain pump 17 is likely to be clogged.
- the air conditioner 1 of the present embodiment performs the dirt suppression operation during the non-cooling operation time. This suppresses the formation or accumulation of stains on the indoor heat exchanger 13 and the drain pan 16. In this way, failures due to dirt can be suppressed.
- the control unit 2 of the air conditioner 1 includes a determination unit 3 and a setting unit 4.
- the determination unit 3 determines whether or not the pollution control operation of the air conditioner 1 is necessary, based on whether or not it is the non-cooling operation time.
- the setting unit 4 sets the dew condensation operating condition for generating dew condensation water on the surface of the indoor heat exchanger 1 3 of the air conditioner 1.
- the control unit 2 executes the pollution control operation of the air conditioner 1 according to the condensation operation condition set by the setting unit 4 based on the necessity determination result of the determination unit 3.
- the indoor heat exchanger 13 is condensed, and water is accumulated in the drain pan 16. Water is drained from drain pan 16. During the cooling operation time, the condensed water is discharged from the indoor heat exchanger 13 through the drain pan 16 so that the dirt in the indoor heat exchanger 13 and the drain pan 16 is discharged together with the water.
- the indoor heat exchanger 13 and the drain pan 16 are likely to be contaminated.
- the control unit 2 since the control unit 2 performs the dirt suppression operation based on the result of whether or not it is the non-cooling operation time, it is possible to prevent the dirt suppression operation from being performed at an inappropriate time. As a result, the accumulation of dirt during the non-cooling operation period can be suppressed.
- the semi-fixing unit 3 determines whether or not it is the non-cooling operation time based on at least one of the operation information and the environment information.
- the non-cooling operation timing can be appropriately determined.
- the determination unit 3 determines the device state of the air conditioner 1, and determines whether or not the stain suppression operation is necessary based on the determination result of the device state. According to this configuration, since the dirt suppression operation is performed only when the dirt suppression operation is required, the wasteful dirt suppression operation is performed. ⁇ 2020/175531 16 ⁇ (: 170? 2020/007663
- the determination unit 3 acquires at least one dirt amount of the drain pan 16, the filter, and the indoor heat exchanger 13 as the device state of the air conditioner 1, and suppresses the dirt based on the dirt amount. Determine whether driving is required. According to this configuration, it is possible to suppress the accumulation of dirt on at least one of the drain pan 16, the filter, and the indoor heat exchanger 13.
- the determination unit 3 executes the dirt suppression operation under the cooling operation allowable condition that does not impair the comfort of the room by the dirt suppression operation. According to this configuration, it is possible to perform the dirt suppression operation without impairing the indoor comfort.
- the dirt detection device 28 of the present disclosure may have a configuration in which, for example, the following modified examples and at least two modified examples that do not contradict each other are combined in addition to the above-described respective embodiments.
- the management device of the air conditioning system is The dirt control operation may be executed in sequence for.
- the means for detecting the amount of dirt is not limited to the above means.
- the dirt detection device 28 detects the degree of dirt progress (dirt amount) of the drain pan 16 based on the color components.
- the amount of dirt may be defined by the reflectance of light.
- the dirt detection device 28 detects dirt on the drain pan 16 but may detect dirt on the filter or the amount of dirt on the indoor heat exchanger 13. In this case, the determination unit 3 determines whether or not the stain suppression operation is necessary based on these stain amounts.
- the acquisition unit 3 1 and the control unit 30 of the dirt detection device 28 may be configured as a single unit. Such a dirt detector 28 is located near the air conditioner 1. ⁇ 2020/175531 17 ⁇ (: 170? 2020/007663
- the dirt detection device 28 may directly communicate with an external device (for example, a user terminal) without going through the network 1 ⁇ 1.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Air Conditioning Control Device (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN202080016449.0A CN113474597A (zh) | 2019-02-27 | 2020-02-26 | 空调机 |
AU2020227517A AU2020227517B2 (en) | 2019-02-27 | 2020-02-26 | Air conditioner |
ES20762191T ES2946485T3 (es) | 2019-02-27 | 2020-02-26 | Acondicionador de aire |
EP20762191.3A EP3933289B1 (en) | 2019-02-27 | 2020-02-26 | Air conditioner |
US17/433,467 US11441807B2 (en) | 2019-02-27 | 2020-02-26 | Air conditioner |
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JP2019-034444 | 2019-02-27 | ||
JP2019034444A JP6705522B1 (ja) | 2019-02-27 | 2019-02-27 | 空気調和機 |
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WO2020175531A1 true WO2020175531A1 (ja) | 2020-09-03 |
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PCT/JP2020/007663 WO2020175531A1 (ja) | 2019-02-27 | 2020-02-26 | 空気調和機 |
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US (1) | US11441807B2 (ja) |
EP (1) | EP3933289B1 (ja) |
JP (1) | JP6705522B1 (ja) |
CN (1) | CN113474597A (ja) |
AU (1) | AU2020227517B2 (ja) |
ES (1) | ES2946485T3 (ja) |
WO (1) | WO2020175531A1 (ja) |
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CN106545975A (zh) * | 2016-12-08 | 2017-03-29 | 美的集团武汉制冷设备有限公司 | 空调器的换热器清洗控制方法和装置 |
JP6724935B2 (ja) * | 2018-02-08 | 2020-07-15 | 株式会社富士通ゼネラル | 空気調和機 |
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- 2020-02-26 ES ES20762191T patent/ES2946485T3/es active Active
- 2020-02-26 CN CN202080016449.0A patent/CN113474597A/zh active Pending
- 2020-02-26 US US17/433,467 patent/US11441807B2/en active Active
- 2020-02-26 AU AU2020227517A patent/AU2020227517B2/en active Active
- 2020-02-26 WO PCT/JP2020/007663 patent/WO2020175531A1/ja unknown
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JP2020139668A (ja) | 2020-09-03 |
ES2946485T3 (es) | 2023-07-19 |
US11441807B2 (en) | 2022-09-13 |
AU2020227517B2 (en) | 2022-09-29 |
CN113474597A (zh) | 2021-10-01 |
EP3933289B1 (en) | 2023-05-17 |
AU2020227517A1 (en) | 2021-09-09 |
EP3933289A4 (en) | 2022-04-13 |
US20220042709A1 (en) | 2022-02-10 |
JP6705522B1 (ja) | 2020-06-03 |
EP3933289A1 (en) | 2022-01-05 |
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