WO2020075298A1 - Climatiseur - Google Patents

Climatiseur Download PDF

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Publication number
WO2020075298A1
WO2020075298A1 PCT/JP2018/038188 JP2018038188W WO2020075298A1 WO 2020075298 A1 WO2020075298 A1 WO 2020075298A1 JP 2018038188 W JP2018038188 W JP 2018038188W WO 2020075298 A1 WO2020075298 A1 WO 2020075298A1
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WO
WIPO (PCT)
Prior art keywords
fan
cleaning unit
indoor
limit switch
fan cleaning
Prior art date
Application number
PCT/JP2018/038188
Other languages
English (en)
Japanese (ja)
Inventor
智大 加藤
能登谷　義明
Original Assignee
日立ジョンソンコントロールズ空調株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立ジョンソンコントロールズ空調株式会社 filed Critical 日立ジョンソンコントロールズ空調株式会社
Priority to JP2019521857A priority Critical patent/JP6847212B2/ja
Priority to CN201880005854.5A priority patent/CN111386431B/zh
Priority to PCT/JP2018/038188 priority patent/WO2020075298A1/fr
Publication of WO2020075298A1 publication Critical patent/WO2020075298A1/fr

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • 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
    • 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
    • F24F11/38—Failure diagnosis
    • 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
    • F24F11/48—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices

Definitions

  • Patent Documents 1 and 2 describe the configuration for cleaning the indoor fan, but regarding the configuration in consideration of the reliability when the fan cleaning device may be out of order, Not listed.
  • an object of the present invention is to provide a highly reliable air conditioner that considers the possibility of failure of the fan cleaning unit.
  • an air conditioner includes a heat exchanger (for example, an indoor heat exchanger 15), a fan (for example, an indoor fan 16), and a fan cleaning unit that cleans the fan.
  • a control unit that controls the fan and the fan cleaning unit and a limit switch that is pressed by the fan cleaning unit are provided, and the control unit moves the fan cleaning unit toward the limit switch, and when the limit switch is not pressed.
  • the fan is rotated in the same direction as the moving direction of the fan cleaning unit.
  • FIG. 1 is a configuration diagram of a refrigerant circuit Q of the air conditioner 100 according to the first embodiment.
  • the solid arrow in FIG. 1 indicates the flow of the refrigerant during the heating operation.
  • the broken line arrow in FIG. 1 indicates the flow of the refrigerant during the cooling operation.
  • the air conditioner 100 is a device that performs air conditioning such as heating operation and cooling operation. As shown in FIG. 1, the air conditioner 100 includes a compressor 11, an outdoor heat exchanger 12, an outdoor fan 13, and an expansion valve 14. Further, the air conditioner 100 includes an indoor heat exchanger 15 (heat exchanger), an indoor fan 16 (fan), and a four-way valve 17 in addition to the above-described configuration.
  • the outdoor fan 13 is a fan that sends outside air to the outdoor heat exchanger 12.
  • the outdoor fan 13 has an outdoor fan motor 13 a, which is a drive source, and is arranged near the outdoor heat exchanger 12.
  • the expansion valve 14 is a valve that decompresses the refrigerant condensed in the "condenser” (one of the outdoor heat exchanger 12 and the indoor heat exchanger 15). The refrigerant decompressed by the expansion valve 14 is guided to the “evaporator” (the outdoor heat exchanger 12 and the indoor heat exchanger 15).
  • the indoor heat exchanger 15 performs heat exchange between the refrigerant flowing through the heat transfer tube g (see FIG. 2) and the indoor air (air in the air-conditioned space) sent from the indoor fan 16. It is a vessel.
  • the indoor heat exchanger 15 includes a plurality of fins f and a plurality of heat transfer tubes g that penetrate the fins f.
  • the indoor heat exchanger 15 includes a front indoor heat exchanger 15a arranged in front of the indoor fan 16 and a rear indoor heat exchanger 15b arranged in rear of the indoor fan 16. And are equipped with.
  • the upper end of the front indoor heat exchanger 15a and the upper end of the rear indoor heat exchanger 15b are connected in an inverted V shape.
  • the indoor fan 16 is a fan that sends indoor air to the indoor heat exchanger 15.
  • the indoor fan 16 has an indoor fan motor 16c (see FIG. 4), which is a drive source, and is arranged near the indoor heat exchanger 15.
  • the four-way valve 17 is a valve that switches the flow path of the refrigerant according to the operation mode of the air conditioner 100. For example, during the cooling operation (see the dashed arrow in FIG. 1), the compressor 11, the outdoor heat exchanger 12 (condenser), the expansion valve 14, and the indoor heat exchanger 15 (evaporator) are connected to the four-way valve 17.
  • the refrigerant circulates in the refrigerating cycle in the refrigerant circuit Q sequentially connected via the.
  • the compressor 11, the indoor heat exchanger 15 (condenser), the expansion valve 14, and the outdoor heat exchanger 12 (evaporator) are connected to the four-way valve 17.
  • the refrigerant circulates in the refrigerating cycle in the refrigerant circuit Q sequentially connected via the.
  • one of the “condenser” and the “evaporator” described above is the outdoor heat. It is the exchanger 12, and the other is the indoor heat exchanger 15.
  • FIG. 2 is a vertical cross-sectional view of the indoor unit Ui included in the air conditioner 100 according to the first embodiment.
  • the fan cleaning unit 24 is shown retracted from the indoor fan 16.
  • the indoor unit Ui includes a dew tray 18, a housing base 19, filters 20a and 20b, and a front panel 21, in addition to the indoor heat exchanger 15 and the indoor fan 16 described above.
  • the indoor unit Ui includes a left / right airflow direction plate 22, a vertical airflow direction plate 23, a fan cleaning unit 24, and a limit switch 25 (failure detection unit).
  • the fan cleaning unit 24 rotates from the lower side (clockwise rotation), it is sensitive, and from the upper side (counterclockwise rotation). Is insensitive.
  • the dew tray 18 receives the condensed water of the indoor heat exchanger 15, and is arranged below the indoor heat exchanger 15.
  • the indoor fan 16 is, for example, a cylindrical cross-flow fan, and is arranged near the indoor heat exchanger 15.
  • the indoor fan 16 includes a plurality of fan blades 16a, a partition plate 16b on which the fan blades 16a are installed, and an indoor fan motor 16c (see FIG. 4) that is a drive source.
  • the housing base 19 is a housing in which devices such as the indoor heat exchanger 15 and the indoor fan 16 are installed.
  • the filters 20a and 20b collect dust from the air flowing toward the indoor heat exchanger 15.
  • One filter 20a is arranged on the front side of the indoor heat exchanger 15, and the other filter 20b is arranged on the upper side of the indoor heat exchanger 15.
  • the front panel 21 is a panel installed so as to cover the filter 20a on the front side, and is rotatable frontward about the lower end.
  • the front panel 21 may not rotate.
  • the left / right airflow direction plate 22 is a plate-like member that adjusts the left-right airflow direction of the air blown into the room.
  • the left / right airflow direction plate 22 is disposed in the blowout air passage h3, and is rotated in the left / right direction by the left / right airflow direction plate motor 26 (see FIG. 4).
  • the fan cleaning unit 24 described below cleans the indoor fan 16.
  • the brush 24b scrapes off dust adhering to the indoor fan 16 (see FIG. 2), and is installed on the shaft portion 24a.
  • the fan cleaning motor 24c is, for example, a stepping motor, and is a drive source for rotating (moving) the brush 24b.
  • the above-mentioned stepping motor has a feature that it can be accurately positioned at a predetermined rotation angle.
  • the abutting portion 24f is a member that abuts against the limit switch 25 (that is, pushes the limit switch 25) when the fan cleaning portion 24 retracts from the indoor fan 16, and is installed on one end side of the shaft portion 24a. .
  • the indoor fan 16 rotates in the reverse direction after the shaft 24a is rotated so that the brush 24b contacts the indoor fan 16 (see FIG. 6).
  • the shaft portion 24a is rotated again, and the brush 24b is separated from the indoor fan 16 (see FIG. 2).
  • the abutting portion 24f pushes the limit switch 25 when the fan cleaning portion 24 retreats.
  • the control unit 30 determines whether or not the fan cleaning unit 24 has properly retracted based on whether the limit switch 25 is switched on / off. It has become.
  • the limit switch 25 is a switch used for determining whether or not the fan cleaning unit 24 has properly retracted from the indoor fan 16 (detection of a failure of the fan cleaning unit 24). That is, the limit switch 25 is a switch pushed by the fan cleaning unit 24, and is provided near the retracted position of the fan cleaning unit 24 (near the indoor heat exchanger 15: see FIG. 2). As shown in FIG. 3, the limit switch 25 includes a case 25a, an actuator 25b, and a movable piece 25c.
  • the signal output from the limit switch 25 is switched from off to on, for example.
  • the limit switch 25 is preferably waterproof.
  • the limit switch 25 may be sealed with a predetermined seal member (not shown). As a result, even when the humidity inside the indoor unit Ui is high, it becomes difficult for moisture to enter the inside of the limit switch 25, and the limit switch 25 does not easily break down.
  • FIG. 4 is a functional block diagram of the air conditioner 100 according to the first embodiment.
  • the indoor unit Ui shown in FIG. 4 includes a remote control transmitter / receiver 28, a display lamp 29a, a sound generator 29b, and an indoor control circuit 31 in addition to the above-described configuration.
  • the remote controller transmission / reception unit 28 exchanges predetermined information with the remote controller 40.
  • the display lamp 29a is a lamp for reporting a failure of the fan cleaning unit 24 (see FIG. 2).
  • the sound generation unit 29b sounds a predetermined notification sound when the fan cleaning unit 24 fails.
  • the indoor control circuit 31 includes a storage unit 31a and an indoor control unit 31b.
  • the storage unit 31a stores a predetermined program, a signal from the limit switch 25, data received via the remote control transmission / reception unit 28, detection values of various sensors (not shown), and the like.
  • the indoor control unit 31b controls the indoor fan motor 16c, the fan cleaning motor 24c, the left and right wind direction plate motors 26, the up and down air direction plate motors 27, and the like based on the data stored in the storage unit 31a. In addition, when it is determined that the fan cleaning unit 24 has a failure, the indoor control unit 31b turns on the display lamp 29a or causes the sound generation unit 29b to generate a predetermined notification sound.
  • the outdoor unit Uo includes an outdoor control circuit 32 in addition to the above-described configuration.
  • the outdoor control circuit 32 is configured to include electronic circuits such as a CPU, ROM, RAM, and various interfaces, and is connected to the indoor control circuit 31 via a communication line.
  • the outdoor control circuit 32 includes a storage unit 32a and an outdoor control unit 32b.
  • the storage unit 32a stores data received from the indoor control circuit 31 as well as a predetermined program.
  • the outdoor control unit 32b controls the compressor motor 11a, the outdoor fan motor 13a, the expansion valve 14 and the like based on the data stored in the storage unit 32a.
  • control unit 30 the indoor control circuit 31 and the outdoor control circuit 32 are collectively referred to as "control unit 30".
  • step S101 the control unit 30 cleans the indoor fan 16 by the fan cleaning unit 24.
  • the trigger for starting the cleaning of the indoor fan 16 may be, for example, a condition that the cumulative time of the air conditioning operation from the previous cleaning reaches a predetermined time.
  • FIG. 6 is an explanatory view showing a state during cleaning of the indoor fan 16 in the air conditioner 100 according to the first embodiment (corresponding to the vertical sectional view of FIG. 2).
  • the controller 30 rotates the brush 24b around the shaft 24a so that the tip of the brush 24b faces the indoor fan 16.
  • the brush 24b contacts the fan blade 16a of the indoor fan 16.
  • the control unit 30 rotates the indoor fan 16 in the opposite direction to that in the normal air conditioning operation.
  • the brush 24b bends as the fan blade 16a moves, and the brush 24b is pressed against the back surface of the fan blade 16a. Then, the dust attached to the fan blade 16a is scraped off by the brush 24b.
  • control unit 30 outputs a retract command to the fan cleaning unit 24 in step S102. That is, the control unit 30 outputs a predetermined retract command for retracting the fan cleaning unit 24 from the indoor fan 16 to the fan cleaning motor 24c (see FIG. 4).
  • step S103 when the signal from the limit switch 25 is switched within the predetermined time ⁇ T (S103: Yes), the control unit 30 ends the series of processes (END).
  • the control unit 30 determines that the fan cleaning unit 24 has properly retracted from the indoor fan 16, and based on a command from the remote controller 40 (see FIG. 4), a predetermined air conditioning operation is performed. I do.
  • the control unit 30 performs the air conditioning operation thereafter ( (Omitted in FIG. 5).
  • step S103 when the signal from the limit switch 25 is not switched within the predetermined time ⁇ T (S103: No), the control unit 30 determines that the normal operation is not performed, and performs the fan cleaning once or a plurality of times. An attempt is made to evacuate the unit 24 (step S200). The details of step S200 will be described below. Note that the upper limit value N of the number of save retries is initialized in the storage unit 31a.
  • step S201 the control unit 30 sets the retry count L to 1 and issues a save retry command.
  • step S202 the fan cleaning unit 24 is moved to the indoor fan 16 side, and in step S203, the fan cleaning unit 24 is moved to the retreat side. That is, the fan cleaning unit 24 is moved toward the limit switch 25.
  • step S204 the control unit 30 determines whether or not the signal (on / off) from the limit switch 25 is switched within a predetermined time ⁇ T after outputting the save retry command.
  • the control unit 30 ends the series of processes (END).
  • step S206 the control unit 30 moves the fan cleaning unit 24 to the indoor fan 16 side and rotates in the same direction as the moving direction of the fan cleaning unit 24 (see S206 in FIG. 7). Accordingly, for example, when the vicinity of the tip of the brush 24b is caught in the gap of the indoor fan 16 and the rotation of the fan cleaning unit 24 is restricted, the catch may be released.
  • step S207 the fan cleaning unit 24 is moved to the retreat side. That is, the fan cleaning unit 24 is moved toward the limit switch 25 and is rotated in the same direction as the moving direction of the fan cleaning unit 24 (see S207 in FIG. 7). Accordingly, for example, when the vicinity of the tip of the brush 24b is caught in the gap of the indoor fan 16 and the rotation of the fan cleaning unit 24 is restricted, the catch may be released.
  • FIG. 7 is an explanatory diagram showing the processing of steps S206 and S207 of FIG. 5 (corresponding to the vertical sectional view of FIG. 2).
  • step S206 the fan cleaning unit 24 is rotated counterclockwise and the indoor fan 16 is rotated clockwise clockwise. That is, the indoor fan 16 is rotating in the same direction as the moving direction of the fan cleaning unit 24.
  • step S207 the fan cleaning unit 24 is rotated clockwise and the indoor fan 16 is rotated counterclockwise. That is, the indoor fan 16 is rotating in the same direction as the moving direction of the fan cleaning unit 24. After that, the brush 24b moves away from the indoor fan 16 and moves toward the limit switch 25.
  • step S208 the control unit 30 determines whether or not the signal (ON / OFF) from the limit switch 25 is switched within a predetermined time ⁇ T after outputting the save retry command.
  • step S208 when the signal from the limit switch 25 is switched within the predetermined time ⁇ T (S208: Yes), the control unit 30 ends the series of processes (END).
  • step S209 when the number of retries L does not exceed the upper limit value N of retries (S209: No), the control unit 30 returns to step S205 and repeats the save retry.
  • step S209 if the number of retries L exceeds the upper limit value N of the number of retries (S209: Yes), the control unit 30 causes the fan cleaning unit 24 to properly retract from the indoor fan 16. It is determined that the fan cleaning unit 24 does not exist (the fan cleaning unit 24 has a defect), and the failure of the fan cleaning unit 24 is notified in step S104.
  • control unit 30 performs the process of step S104, and then the control unit 30 ends the series of processes (END).
  • the air conditioner 100 controls the heat exchanger (indoor heat exchanger 15), the fan (indoor fan 16), the fan cleaning unit 24 that cleans the fan, and at least the fan and the fan cleaning unit 24.
  • the control unit 30 and the limit switch 25 pushed by the fan cleaning unit 24 are provided, and the control unit 30 moves the fan cleaning unit 24 toward the limit switch 25 (clockwise in FIG. 7) to move the limit switch 25. If is not pressed, the fan is rotated in the same direction as the moving direction of the fan cleaning unit 24 (for example, S206, S207).
  • the fan cleaning unit 24 can be reliably retracted to the regular position (position in contact with the limit switch 25).
  • the control unit 30 moves the fan cleaning unit 24 toward the limit switch 25 (clockwise in FIG. 7), and when the limit switch 25 is not pressed, moves the fan cleaning unit 24 in the moving direction before operating the fan. In the opposite direction (counterclockwise in FIG. 7) (for example, S202). Accordingly, even if the fan cleaning unit 24 has a problem, the fan cleaning unit 24 can be reliably retracted to the regular position.
  • the fan cleaning unit 24 When the process of moving the fan cleaning unit 24 toward the limit switch 25 (for example, the evacuation retry) is repeated a plurality of times, the fan is rotated except when the first process is performed (for example, the retry count L is the second time and the third time). (For example, S206 and S207). Accordingly, by supporting the operation of the fan cleaning unit 24 by rotating the fan, the fan cleaning unit 24 can be reliably retracted to the regular position.
  • steps S201 to S203 are shown only once at the beginning, but the processing is not limited to this.
  • the processes of steps S205 to S209 may be executed. This makes it possible to omit rotating the fan.
  • step S206 and step S207 are executed as a set, but the present invention is not limited to this. For example, only one may be executed. That is, after executing step S206, the fan cleaning unit 24 may be moved to the retreat side in step S207A (not shown), or after the fan cleaning unit 24 is moved to the indoor fan side in step S206A (not shown). The processing of step S207 may be executed. This makes it possible to omit rotating the fan.
  • ⁇ 2nd Embodiment In the first embodiment, in steps S203 and S207, as shown in FIG. 7, the brush 24b is retracted to the regular position by rotating the fan cleaning unit 24 in the clockwise direction, but the present invention is not limited to this. Not something.
  • the regular position may rotate counterclockwise to retract the brush 24b to the regular position.
  • FIG. 8 is a vertical cross-sectional view of the indoor unit Ui included in the air conditioner 100 according to the second embodiment.
  • the same components as those shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.
  • the fan cleaning unit 24 rotates from the upper side (when rotating counterclockwise), when it rotates from the lower side (when rotating clockwise) Is insensitive. Since the fan cleaning unit 24 has the stopper 50, the fan cleaning unit 24 cannot contact the insensitive portion.
  • the fan cleaning unit 24 shown in FIG. 8 is configured to rotate between the limit switch 25 and the stopper 50.
  • the fan cleaning unit 24 rotates clockwise from the position in contact with the limit switch 25 to the stopper 50, and then rotates counterclockwise to the cleaning position of the indoor fan 16. Then, the indoor fan 16 is cleaned.
  • the control unit 30 issues a retract command to the fan cleaning unit 24, in the normal case, the fan cleaning unit 24 rotates clockwise to the stopper 50, and then turns to the limit switch 25. Rotate counterclockwise.
  • the fan cleaning unit 24 rotates to the stopper 50.
  • the fan cleaning unit 24 may rotate from the stopper 50 toward the limit switch 25. In any case, this is the retracting operation of the fan cleaning unit 24 when the control unit 30 issues a retract command to the fan cleaning unit 24.
  • the control unit 30 controls the fan cleaning unit 24.
  • Evacuation retry is tried multiple times (S200). Thereby, for example, even if the brush 24b is caught in the gap of the indoor fan 16, the brush 24b can be separated from the indoor fan 16.
  • the fan cleaning unit 24 is arranged in the concave portion of the front indoor heat exchanger 15a having a ⁇ character shape in a longitudinal sectional view.
  • the process of FIG. 5 can be applied even when the fan cleaning unit 24 is arranged other than between the indoor heat exchanger 15 and the indoor fan 16.
  • FIG. 9 is a vertical cross-sectional view of the indoor unit Ui included in the air conditioner 100 according to the third embodiment.
  • the same components as those shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted. Refer to FIGS. 4 and 5 as appropriate.
  • the fan cleaning unit 24 shown in FIG. 9 is arranged in the blowout air passage h3 and is configured to rotate between the limit switch 25 and the indoor fan 16 as in FIG.
  • the fan cleaning unit 24 rotates clockwise from a position in contact with the limit switch 25.
  • step S103 the control unit 30 determines whether or not the signal (on / off) from the limit switch 25 has been switched within a predetermined time ⁇ T after outputting the save command.
  • step S103 when the signal from the limit switch 25 is not switched within the predetermined time ⁇ T (S103: No), the control unit 30 determines that the normal operation is not performed, and performs the fan cleaning once or a plurality of times. An attempt is made to evacuate the unit 24 (step S200).
  • the control unit 30 controls the fan cleaning unit 24. Evacuation retry is tried multiple times (S200). Thereby, for example, even if the brush 24b is caught in the gap of the indoor fan 16, the brush 24b can be separated from the indoor fan 16.
  • the fan cleaning unit 24 is arranged on the upstream side of the indoor fan 16 in the air flow direction, but the present invention is not limited to this.
  • the fan cleaning unit 24 may be arranged on the downstream side of the indoor fan 16.
  • step S206 the control unit 30 moves the fan cleaning unit 24 to the indoor fan 16 side and rotates in the same direction as the moving direction of the fan cleaning unit 24 (see S206 in FIG. 7).
  • the indoor fan 16 rotates in the reverse direction). Accordingly, for example, when the vicinity of the tip of the brush 24b is caught in the gap of the indoor fan 16 and the rotation of the fan cleaning unit 24 is restricted, the catch may be released.
  • step S207 the fan cleaning unit 24 is moved to the retreat side. That is, the fan cleaning unit 24 is moved counterclockwise toward the limit switch 25, and the indoor fan 16 is rotated clockwise in the same direction as the moving direction of the fan cleaning unit 24 (unlike S207 in FIG. 7). , The indoor fan 16 rotates forward). Accordingly, for example, when the vicinity of the tip of the brush 24b is caught in the gap of the indoor fan 16 and the rotation of the fan cleaning unit 24 is restricted, the catch may be released.
  • the air conditioner 100 and the like according to the present invention have been described in the above embodiments, the present invention is not limited to these descriptions and various modifications can be made.
  • the air conditioner instead of the limit switch 25 described in the first embodiment, the air conditioner includes an angle sensor 70 (fault detection unit: see FIG. 10) that detects an inclination angle of the brush 24b in the extending direction. May be.
  • FIG. 10 is a configuration diagram of the fan cleaning unit 24 and the angle sensor 70 included in the air conditioner according to the modification.
  • the angle sensor 70 illustrated in FIG. 15 is a sensor that detects a failure of the fan cleaning unit 24 by detecting a rotation angle of the fan cleaning unit 24 (an inclination angle in the extending direction of the brush 24b).
  • an acceleration sensor can be used.
  • the control unit 30 notifies the failure of the fan cleaning unit 24 based on the detection value of the angle sensor 70. For example, if the detection value of the angle sensor 70 does not reach the predetermined value within a predetermined time after the fan cleaning unit 24 is commanded to retract, the control unit 30 determines that the fan cleaning unit 24 is out of order, and detects the failure. Notify me.
  • the control unit 30 may notify that the fan cleaning unit 24 requires maintenance when the time elapsed from the time of installation of the air conditioner 100 or the time of previous maintenance reaches a predetermined time. Further, when the number of air conditioning operations from the time of installation of the air conditioner 100 or the time of previous maintenance reaches a predetermined number, the control unit 30 may notify that the fan cleaning unit 24 needs maintenance. . As a result, even if the fan cleaning unit 24 is not out of order, the user can be notified that maintenance is required.
  • the air conditioning operation may be prohibited after the control unit 30 notifies the fan cleaning unit 24 of a failure. That is, the control unit 30 may prohibit the air conditioning operation until the fan cleaning unit 24 returns to normal even if the remote control 40 issues a command to start the air conditioning operation after the failure of the fan cleaning unit 24.
  • the control unit 30 may prohibit the air conditioning operation until the fan cleaning unit 24 returns to normal even if the remote control 40 issues a command to start the air conditioning operation after the failure of the fan cleaning unit 24.
  • the configuration in which the brush 24b rotates around the shaft portion 24a of the fan cleaning unit 24 has been described, but the configuration is not limited to this.
  • the fan cleaning unit 24 may move in parallel.
  • the configuration in which the fan cleaning unit 24 includes the brush 24b has been described, but the configuration is not limited to this. That is, a sponge or the like may be used instead of the brush 24b as long as the member can clean the indoor fan 16.
  • each of the embodiments the configuration in which one indoor unit Ui (see FIG. 1) and one outdoor unit Uo (see FIG. 1) are provided has been described, but the configuration is not limited to this. That is, a plurality of indoor units connected in parallel may be provided, or a plurality of outdoor units connected in parallel may be provided. Further, each embodiment can be applied to various types of air conditioners as well as room air conditioners.
  • each embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the configurations described. Further, it is possible to add / delete / replace other configurations with respect to a part of the configurations of the respective embodiments.
  • the above-mentioned mechanisms and configurations are shown to be necessary for explanation, and not all the mechanisms and configurations are shown in the product.
  • Air conditioner 100 Air conditioner 11 Compressor 12 Outdoor heat exchanger 13 Outdoor fan 14 Expansion valve 15 Indoor heat exchanger (heat exchanger, restriction member) 16 Indoor fan (fan) 24 Fan Cleaning Section 24a Shaft Section 24b Brush 24c Fan Cleaning Motor 25 Limit Switch (Failure Detection Section) 30 control unit 40 remote control 50 stopper 70 angle sensor (failure detection unit)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Air Conditioning Control Device (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

La présente invention concerne un climatiseur présentant une grande fiabilité en ce qui concerne la possibilité d'une défaillance d'une unité de nettoyage de ventilateur. Ce climatiseur comprend un échangeur de chaleur (100), un ventilateur interne (16), une unité de nettoyage de ventilateur (24) pour nettoyer le ventilateur interne (16), une unité de commande (30) qui commande au moins le ventilateur interne (16) et l'unité de nettoyage de ventilateur (24), et un commutateur de limite (25) pressé par l'unité de nettoyage de ventilateur (24). L'unité de commande (30) amène l'unité de nettoyage de ventilateur (24) à se déplacer vers le commutateur de limite (25) et amène le ventilateur interne (16) à tourner dans le même sens que le sens de mouvement de l'unité de nettoyage de ventilateur (24) lorsque le commutateur de limite (25) n'est pas pressé.
PCT/JP2018/038188 2018-10-12 2018-10-12 Climatiseur WO2020075298A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2019521857A JP6847212B2 (ja) 2018-10-12 2018-10-12 空気調和機
CN201880005854.5A CN111386431B (zh) 2018-10-12 2018-10-12 空调机
PCT/JP2018/038188 WO2020075298A1 (fr) 2018-10-12 2018-10-12 Climatiseur

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PCT/JP2018/038188 WO2020075298A1 (fr) 2018-10-12 2018-10-12 Climatiseur

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WO2020075298A1 true WO2020075298A1 (fr) 2020-04-16

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JP (1) JP6847212B2 (fr)
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Citations (4)

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JPH0539800A (ja) * 1991-08-05 1993-02-19 Seidensha:Kk 送風機の清掃方法
JP2006170613A (ja) * 2006-03-17 2006-06-29 Fujitsu General Ltd 空気調和機
JP2008116142A (ja) * 2006-11-06 2008-05-22 Hitachi Appliances Inc 空気調和機
JP2011075170A (ja) * 2009-09-30 2011-04-14 Sanyo Electric Co Ltd 空気調和機

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JP2002267249A (ja) * 2001-03-09 2002-09-18 Sharp Corp 流体送り装置
CN100529559C (zh) * 2007-12-07 2009-08-19 广东美的电器股份有限公司 一种能自动除尘的挂壁式空调
CN101435430A (zh) * 2007-12-19 2009-05-20 万心悦 具有自动清洁功能的吊扇
JP5530944B2 (ja) * 2011-01-26 2014-06-25 日立アプライアンス株式会社 空気調和機
KR101450606B1 (ko) * 2013-01-21 2014-10-17 김세길 측벽 삽입형 열교환식 양방향 환풍기
JP6201203B1 (ja) * 2016-10-25 2017-09-27 佐藤電機工事株式会社 横流ファンや多翼ファンの清掃用具
WO2019220491A1 (fr) * 2018-05-14 2019-11-21 日立ジョンソンコントロールズ空調株式会社 Climatiseur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0539800A (ja) * 1991-08-05 1993-02-19 Seidensha:Kk 送風機の清掃方法
JP2006170613A (ja) * 2006-03-17 2006-06-29 Fujitsu General Ltd 空気調和機
JP2008116142A (ja) * 2006-11-06 2008-05-22 Hitachi Appliances Inc 空気調和機
JP2011075170A (ja) * 2009-09-30 2011-04-14 Sanyo Electric Co Ltd 空気調和機

Also Published As

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JP6847212B2 (ja) 2021-03-24
CN111386431A (zh) 2020-07-07
JPWO2020075298A1 (ja) 2021-02-15
CN111386431B (zh) 2021-08-20

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