WO2019220492A1 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
WO2019220492A1
WO2019220492A1 PCT/JP2018/018517 JP2018018517W WO2019220492A1 WO 2019220492 A1 WO2019220492 A1 WO 2019220492A1 JP 2018018517 W JP2018018517 W JP 2018018517W WO 2019220492 A1 WO2019220492 A1 WO 2019220492A1
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WO
WIPO (PCT)
Prior art keywords
fan
cleaning
indoor
heat exchanger
air
Prior art date
Application number
PCT/JP2018/018517
Other languages
French (fr)
Japanese (ja)
Inventor
千紘 齊藤
智大 加藤
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 PCT/JP2018/018517 priority Critical patent/WO2019220492A1/en
Priority to JP2019515556A priority patent/JP6541923B1/en
Priority to CN201880037857.7A priority patent/CN110785612B/en
Priority to EP18917038.4A priority patent/EP3795912A4/en
Priority to TW108116507A priority patent/TWI706089B/en
Publication of WO2019220492A1 publication Critical patent/WO2019220492A1/en

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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
    • 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
    • F24F1/0025—Cross-flow or tangential fans
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • 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
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus

Definitions

  • the present invention relates to an air conditioner.
  • Patent Document 1 describes a device including a “fan cleaning device for removing dust from a fan”. Further, FIG. 1 of Patent Document 1 describes a configuration in which a fan cleaning device is installed in the vicinity of an air outlet of an indoor fan.
  • the fan cleaning device has a brush-like member for removing dust from the fan by contacting the fan. Further, the fan cleaning device is provided with an operation mode changing means for operating the cleaning device by changing the mode from the previous mode for a certain time, and every time a predetermined operation time is accumulated by the operation time accumulating means, the fan cleaning device is constant. The mode is changed from the previous mode for a period of time, and the cleaning operation can be automatically performed without a user instruction.
  • the operation mode changing means since the state before changing the operation mode is not considered, there is a problem that the deformation of the brush proceeds depending on the state of the operation mode.
  • an object of the present invention is to provide an air conditioner that can prevent deformation of the fan cleaning member.
  • an air conditioner includes an indoor heat exchanger, a blower fan (for example, the indoor fan 16) that sends air to the indoor heat exchanger, and a fan cleaning unit that cleans the blower fan. And a control unit that controls the fan cleaning unit.When the fan cleaning unit is cleaned by the fan cleaning unit after the heating operation is completed, the control unit starts after the heating operation is stopped after the heating operation is stopped. After the predetermined time of 1 elapses, the fan cleaning unit performs cleaning of the blower fan.
  • a blower fan for example, the indoor fan 16
  • a fan cleaning unit that cleans the blower fan.
  • the control unit controls the fan cleaning unit.When the fan cleaning unit is cleaned by the fan cleaning unit after the heating operation is completed, the control unit starts after the heating operation is stopped after the heating operation is stopped. After the predetermined time of 1 elapses, the fan cleaning unit performs cleaning of the blower fan.
  • deformation of the fan cleaning member can be prevented.
  • the air conditioner 100 is an apparatus that performs air conditioning by circulating a refrigerant in a refrigeration cycle (heat pump cycle).
  • the air conditioner 100 includes an indoor unit Ui, an outdoor unit Uo, a remote controller 40 (air conditioning control terminal) for the user to operate the air conditioner 100 by communicating with the indoor unit Ui through infrared rays, radio waves, communication lines, and the like. It has. Further, the indoor unit Ui and the outdoor unit Uo are connected to the refrigerant pipe by a communication cable.
  • the imaging unit 28 is disposed at the center in the left-right direction.
  • the remote control transmission / reception unit 27 is arranged at a position where it is easy to receive a remote control signal near the lower front part of the indoor unit Ui.
  • a lamp display unit 50 (see FIG. 3) indicating various operation states by lighting of the lamp is provided beside the imaging unit 28.
  • FIG. 2 is an explanatory diagram illustrating a vertical cross-sectional configuration of the indoor unit Ui included in the air conditioner 100 according to the embodiment.
  • the indoor unit Ui includes a dew tray 18, a housing base 19, filters 20 a and 20 b, a front panel 21, a left and right wind direction plate 22, and an up and down wind direction plate 23.
  • a fan cleaning unit 24 FIG. 2 illustrates a state where the indoor fan 16 is not cleaned by the fan cleaning unit 24.
  • the indoor heat exchanger 15 has a plurality of fins f and a plurality of heat transfer tubes g penetrating the fins f. Moreover, if it demonstrates from another viewpoint, the indoor heat exchanger 15 has the front side indoor heat exchanger 15a and the back side indoor heat exchanger 15b. The front indoor heat exchanger 15 a is disposed on the front side of the indoor fan 16. On the other hand, the rear indoor heat exchanger 15 b is disposed on the rear side of the indoor fan 16. And the upper end part of the front side indoor heat exchanger 15a and the upper end part of the rear side indoor heat exchanger 15b are connected.
  • the dew receiving tray 18 receives the condensed water of the indoor heat exchanger 15, and is disposed below the indoor heat exchanger 15 (the front indoor heat exchanger 15a in the example shown in FIG. 2).
  • the indoor fan 16 is, for example, a cylindrical cross flow fan, and is disposed in the vicinity of the indoor heat exchanger 15.
  • the indoor fan 16 includes a plurality of fan blades 16a, a partition plate 16b on which these fan blades 16a are installed, and an indoor fan motor 16m (see FIG. 8) as a drive source.
  • the indoor fan 16 is preferably coated with a hydrophilic coating agent.
  • a coating material for example, a material obtained by adding a binder (silicon compound having a hydrolyzable group), butanol, tetrahydrofuran, and an antibacterial agent to isopropyl alcohol-dispersed silica sol which is a hydrophilic material may be used.
  • the coating agent described above also functions as an antistatic agent for the indoor fan 16.
  • the housing base 19 shown in FIG. 2 is a housing in which devices such as the indoor heat exchanger 15 and the indoor fan 16 are installed.
  • the filter 20 a is for removing dust from the air toward the front air inlet h ⁇ b> 1 and is installed on the front side of the indoor heat exchanger 15.
  • the filter 20b removes dust from the air toward the upper air suction port h2, and is installed 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 to the front side with the lower end as an axis.
  • the front panel 21 may be configured not to rotate.
  • the left and right wind direction plate 22 is a plate-like member that adjusts the flow in the left and right direction of the air blown into the room as the indoor fan 16 rotates.
  • the left and right wind direction plates 22 are arranged in the blowing air path h3 and are rotated in the left and right directions by a left and right wind direction plate motor 25 (see FIG. 8).
  • the vertical wind direction plate 23 is a plate-like member that adjusts the vertical flow of air blown into the room as the indoor fan 16 rotates.
  • the vertical wind direction plate 23 is disposed in the vicinity of the air outlet h4 and is rotated in the vertical direction by the vertical wind direction plate motor 26 (see FIG. 8).
  • the air sucked through the air suction ports h1 and h2 exchanges heat with the refrigerant flowing through the heat transfer tube g of the indoor heat exchanger 15, and the heat-exchanged air is guided to the blowout air path h3.
  • the air flowing through the blowout air path h3 is guided in a predetermined direction by the left and right airflow direction plates 22 and the vertical airflow direction plate 23, and further blown out into the room through the air outlet h4.
  • the filters 20a and 20b Most of the dust traveling toward the air inlets h1 and h2 along with the air flow is collected by the filters 20a and 20b. However, fine dust may pass through the filters 20 a and 20 b and adhere to the indoor heat exchanger 15 and the indoor fan 16. Therefore, it is desirable to periodically clean the indoor heat exchanger 15 and the indoor fan 16. Therefore, in the present embodiment, the indoor heat exchanger 15 is washed away with water after the indoor fan 16 is cleaned using the fan cleaning unit 24 described below.
  • the fan cleaning unit 24 shown in FIG. 2 cleans the indoor fan 16 and is disposed between the indoor heat exchanger 15 and the indoor fan 16. More specifically, the fan cleaning unit 24 is disposed in the recess r of the front indoor heat exchanger 15a that has a ⁇ shape when viewed in a longitudinal section. In the example shown in FIG. 2, an indoor heat exchanger 15 (a lower portion of the front indoor heat exchanger 15 a) is present below the fan cleaning unit 24, and a dew tray 18 is present. A part of the fan cleaning unit 24 is made of nylon, for example.
  • the fan cleaning of the indoor fan 16 will be described together with conventional problems.
  • the fan cleaning device described in Patent Document 1 includes operation mode changing means for operating the cleaning device by changing from the previous mode for a certain time, and a predetermined operation time is accumulated by the operation time accumulating means. Every time, the mode is changed from the previous mode for a certain period of time, and the cleaning operation can be automatically performed without a user instruction.
  • the operation mode before being changed by the operation mode changing means is the heating operation mode, heat is applied to the brush 24b immediately after the heating operation, and the brush 24b is deformed if the fan cleaning is performed as it is. There is.
  • the blower fan is driven at the first rotational speed until the first predetermined time elapses after the heating operation is stopped. And when cleaning of the indoor fan 16 by the fan cleaning part 24 is started, it is set as 2nd rotational speed higher than 1st rotational speed. Thereby, in the case of immediately after the end of the heating operation mode, hot air in the indoor unit can be released and fan cleaning can be performed in a short time.
  • the second predetermined time (second predetermined time ⁇ first predetermined time). Time)
  • the indoor fan 16 is driven at the first rotational speed
  • the rotational speed of the indoor fan 16 is started when the fan cleaning unit 24 starts cleaning the indoor fan 16 after the second predetermined time has elapsed. Is a second rotational speed greater than the first rotational speed.
  • FIG. 3 is an explanatory diagram illustrating a lamp display unit of the indoor unit Ui according to the embodiment.
  • the operation state is indicated by the lighting of the lamp of the lamp display unit 50.
  • the lamp includes a “run” lamp that lights during operation, a “timer” lamp that lights during timer reservation, etc., during filter cleaning (filter cleaning mode), indoor fan cleaning (fan cleaning mode), and heat exchanger “Clean” lamp that lights up during cleaning (cleaning mode), “eco” lamp that lights up during eco operation, “in-room” lamp that lights up when a person is detected, auto-off setting or auto-save during eco operation, etc.
  • the fan cleaning mode display lamp will be described with reference to FIG. 4 in comparison with the filter cleaning mode display lamp.
  • FIG. 4A is an explanatory diagram showing the filter cleaning mode when the clean lamp is turned on.
  • FIG. 4B is an explanatory diagram showing a fan cleaning mode (within a first predetermined time) when the clean lamp is on.
  • FIG. 4C is an explanatory diagram showing the fan cleaning mode (after the first predetermined time) when the clean lamp is on.
  • 4A, FIG. 4B, and FIG. 4C show the display of the lamp display unit 50, and the right side shows the operation state of each mode in the side sectional configuration of the indoor unit Ui shown in FIG.
  • the filter cleaning mode is a mode for automatically cleaning the filter when the operation is stopped when the condition is satisfied.
  • the filter can also be cleaned by operating the remote control.
  • the fan cleaning mode is a mode in which the indoor fan 16 is automatically cleaned after the air conditioning operation. The fan can be cleaned by operating the remote control.
  • ⁇ A “clean” lamp is used because both of the two modes are functions that make the component “clean”. However, since only the lighting of the “clean” lamp is unclear to the user which mode is activated, the functions are classified as follows.
  • the “clean” lamp of the lamp display unit 50 is turned on, and the up / down wind direction plate 23 of the indoor unit Ui is at a position where the operation is stopped.
  • the user knows that the air-conditioning operation is stopped and the internal cleaning of the indoor unit Ui (specifically, the filters 20a and 20b) is being performed.
  • the direction of the up-down air direction plate 23 of the indoor unit Ui is set to the horizontal direction or the upward direction of the indoor space. Since the air is basically blown, the horizontal direction or the upward direction of the indoor space is set so as not to blow the air to indoor persons. Thereby, the user can understand that the air blowing operation is being performed and the indoor fan 16 of the indoor unit Ui is being cleaned.
  • the direction of the up-down wind direction plate 23 may be directed downward by about 10 degrees from the horizontal. Even in this case, it is possible to prevent air from being blown on the person in the room. Therefore, it is assumed that the direction downward about 10 degrees from the horizontal is also included in the upward direction with respect to the indoor space.
  • the “RUN” lamp of the lamp display unit 50 is lit and the “CLEAN” lamp is lit. Since only the lighting of the lamp is the same as FIG. 4B, it cannot be identified.
  • the direction of the up-and-down air direction plate 23 of the indoor unit Ui is set to a position where the operation is stopped.
  • the front panel 21 is also closed. Thereby, the user knows that fan cleaning is performed.
  • the vertical wind direction plate 23 is closed, but fan cleaning may be performed at the wind direction position in FIG. 4B.
  • the front panel 21 is closed, but fan cleaning may be performed with the front panel 21 opened as shown in FIG. 4B.
  • the control unit 30 (see FIG. 8) of the air conditioner 100 moves the vertical airflow direction plate 23 upward or horizontally with respect to the indoor space until the first predetermined time elapses after the heating operation is stopped. Then, the indoor fan 16 is driven. After the first predetermined time has elapsed since the heating operation was stopped, the control unit 30 maintains the state in which the up / down wind direction plate 23 is directed upward or horizontally with respect to the indoor space, or the up / down wind direction plate 23. It is good to close. Thereby, deformation
  • the air conditioner 100 includes one or more display lamps that display the operation state, and the control unit 30 performs the indoor fan operation by the fan cleaning unit 24 from when the heating operation is stopped until the first predetermined time elapses.
  • the same indicator lamp that is lit during 16 cleaning may be lit. Thereby, it turns out that clean cleaning is performed at the time of ventilation.
  • the indoor unit Ui having the filter cleaning mode includes a filter cleaning unit (filter cleaning means).
  • An indoor heat exchanger 15 (FIG. 2) shown in the indoor unit Ui (FIG. 2) includes filters 20a and 20b (FIG. 2) above or in front of the indoor unit Ui (FIG. 2).
  • the fan 16 is prevented from being soiled. When dust accumulates on the filters 20a and 20b, clogging occurs, air passing through the indoor heat exchanger 15 is reduced, and the air conditioning capability of the indoor unit Ui is attenuated.
  • the filter cleaning unit automatically cleans the filters 20a and 20b using a brush (not shown) after the indoor unit Ui has finished the operation such as air conditioning.
  • the vertical wind direction plate 23 does not need to be completely closed, but is preferably directed upward.
  • the air conditioner 100 includes a filter cleaning unit (filter cleaning means) that cleans the filter installed on the air suction side of the indoor heat exchanger, the first predetermined time from when the heating operation is stopped. Until the time elapses, the filter may be cleaned by the filter cleaning unit.
  • filter cleaning unit filter cleaning means
  • the indoor unit Ui is driven by driving the indoor fan 16 during at least a part of the period during which the filter is cleaned by the filter cleaning unit. You may escape the heat.
  • the filter cleaning time may be about 20 minutes
  • the first predetermined time that is a preprocessing period of fan cleaning may be about 5 minutes.
  • FIG. 5 is an explanatory diagram of the refrigerant circuit Q of the air conditioner 100 according to the embodiment.
  • the solid line arrow of FIG. 5 has shown the flow of the refrigerant
  • the broken line arrows in FIG. 5 indicate the flow of the refrigerant during the cooling operation.
  • the air conditioner 100 includes a compressor 11, an outdoor heat exchanger 12, an outdoor fan 13, and an expansion valve 14.
  • the air conditioner 100 includes an indoor heat exchanger (heat exchanger) 15, an indoor fan (blower fan) 16, and a four-way valve 17 in addition to the above-described configuration.
  • the compressor 11 is a device that compresses a low-temperature and low-pressure gas refrigerant by driving the compressor motor 11a and discharges it as a high-temperature and high-pressure gas refrigerant.
  • the outdoor heat exchanger 12 is a heat exchanger in which heat exchange is performed between the refrigerant flowing through the heat transfer tube (not shown) and the outside air sent from the outdoor fan 13.
  • the outdoor fan 13 is a fan that sends outside air to the outdoor heat exchanger 12 by driving the outdoor fan motor 13a, and is installed in the vicinity of the outdoor heat exchanger 12.
  • the expansion valve 14 is a valve that depressurizes the refrigerant condensed in the “condenser” (the outdoor heat exchanger 12 in the cooling operation and the indoor heat exchanger 15 in the heating operation). Note that the refrigerant decompressed in the expansion valve 14 is guided to an “evaporator” (the indoor heat exchanger 15 in the cooling operation, and the outdoor heat exchanger 12 in the heating operation).
  • 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 sent from the indoor fan 16 (air in the air-conditioning target space). It is a vessel.
  • the indoor fan 16 is a fan that sends indoor air into the indoor heat exchanger 15 by driving of the indoor fan motor 16m (drive device, see FIG. 8), and is installed in the vicinity of 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 broken line 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 replaced with the four-way valve 17. In the refrigerant circuit Q that is sequentially connected in an annular manner through the refrigerant, the refrigerant circulates in the refrigeration cycle.
  • the compressor 11, the indoor heat exchanger 15 (condenser), the expansion valve 14, and the outdoor heat exchanger 12 (evaporator) are replaced by the four-way valve 17.
  • the refrigerant circuit Q that is sequentially connected in an annular manner through the refrigerant, the refrigerant circulates in the refrigeration cycle.
  • the compressor 11, the outdoor heat exchanger 12, the outdoor fan 13, the expansion valve 14, and the four-way valve 17 are installed in the outdoor unit Uo.
  • the indoor heat exchanger 15 and the indoor fan 16 are installed in the indoor unit Ui.
  • FIG. 6 is a perspective view in which a part of the indoor unit Ui included in the air conditioner 100 according to the embodiment is cut away.
  • the fan cleaning unit 24 includes a fan cleaning motor 24m (see FIG. 8) in addition to the shaft portion 24a and the brush 24b shown in FIG.
  • the shaft portion 24a is a rod-like member parallel to the axial direction of the indoor fan 16, and both ends thereof are pivotally supported.
  • the brush 24b removes dust adhering to the fan blade 16a and is installed on the shaft portion 24a.
  • the fan cleaning motor 24m (see FIG. 8) is, for example, a stepping motor, and has a function of rotating (turning) the shaft portion 24a by a predetermined angle.
  • the fan cleaning motor 24m (see FIG. 8) is driven and the indoor fan so that the brush 24b contacts the indoor fan 16 (see FIG. 10). 16 is reversely rotated.
  • the fan cleaning motor 24m is driven again, the brush 24b is rotated, and the brush 24b is separated from the indoor fan 16 (see FIG. 2). .
  • the tip of the brush 24b faces the indoor heat exchanger 15 as shown in FIG. Specifically, except when the indoor fan 16 is being cleaned (including during normal air-conditioning operation), the brush 24b is spaced apart from the indoor fan 16 in a state of being directed in the horizontal direction (substantially horizontal). The reason why the fan cleaning unit 24 is arranged in this way will be described with reference to FIG.
  • FIG. 7 is an explanatory diagram illustrating the flow of air in the vicinity of the fan cleaning unit 24 during the air conditioning operation in the air conditioner 100 according to the embodiment.
  • the direction of each arrow shown in FIG. 7 indicates the direction in which air flows.
  • the length of each arrow indicates the speed of air flow.
  • the indoor fan 16 rotates forward, and the air passing through the gaps between the fins f of the front indoor heat exchanger 15a is directed to the indoor fan 16.
  • the brush 24b of the fan cleaning part 24 is located in the substantially horizontal direction, it is not limited to this.
  • the direction of the brush may be stopped horizontally at a downward direction, that is, at a position where the brush 24b is slightly in contact with the front indoor heat exchanger 15a.
  • the fan cleaning unit 24 is disposed in the recess r with the brush 24b facing in the lateral direction.
  • the direction of the brush 24b is parallel to the direction of air flow.
  • the fan cleaning unit 24 hardly interferes with the air flow.
  • the fan cleaning unit 24 is arranged in the upstream area, not in the middle or downstream area (near the air outlet h4 shown in FIG. 2) of the air flow when the indoor fan 16 is rotating forward.
  • the air flowing in the lateral direction along the brush 24b is accelerated by the fan blade 16a, and the accelerated air is directed to the air outlet h4 (see FIG. 2).
  • the fan cleaning part 24 is arrange
  • FIG. 8 is a block diagram illustrating a control function of the air conditioner 100 according to the embodiment.
  • the indoor unit Ui illustrated in FIG. 8 includes the remote control transmission / reception unit 27 and the indoor control circuit 31 as described above.
  • the remote controller transmission / reception unit 27 exchanges predetermined information with the remote controller 40.
  • the indoor control circuit 31 includes electronic circuits such as a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and various interfaces. Then, the program stored in the ROM is read out and expanded in the RAM, and the CPU executes various processes.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the indoor control circuit 31 includes a storage unit 31a and an indoor control unit 31b.
  • the storage unit 31a stores data received via the remote control transmission / reception unit 27, detection values of various sensors (not shown), and the like.
  • the indoor control unit 31b executes the fan cleaning motor 24m, the indoor fan motor 16m, the left and right air direction plate motor 25, the up and down air direction plate motor 26, and the like based on the data stored in the storage unit 31a.
  • the indoor control unit 31b has a function of bringing the fan cleaning unit 24 into contact with the indoor fan 16 in addition to the execution function of the motor and the like.
  • the storage unit 31a stores the number of operations of the air conditioner 100 and the operation integration time.
  • the indoor control unit 31b executes the fan cleaning mode based on the number of operations or / and the accumulated operation time.
  • the outdoor unit Uo includes an outdoor control circuit 32 in addition to the configuration described above.
  • the outdoor control circuit 32 includes electronic circuits such as a CPU, a ROM, a 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 in addition to 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.
  • the indoor control circuit 31 and the outdoor control circuit 32 are collectively referred to as a “control unit 30”.
  • FIG. 9 is a flowchart of control processing executed by the control unit 30 of the air conditioner 100 according to the embodiment (see FIG. 2 as appropriate).
  • the heating operation is stopped in step S101, and that the tip of the brush 24b faces the front indoor heat exchanger 15a (the state shown in FIG. 2).
  • step S102 the control unit 30 performs the air blowing operation for the indoor fan 16 for a first predetermined time.
  • the hot air from the indoor unit Ui can escape and the heated brush 24b can be cooled.
  • step S103 after the first predetermined time has elapsed, the fan cleaning unit 24 cleans the indoor fan 16. A state during cleaning of the indoor fan 16 will be described with reference to FIG.
  • FIG. 10 is an explanatory diagram illustrating a state in which the indoor fan 16 is being cleaned in the air conditioner 100 according to the embodiment.
  • the indoor heat exchanger 15, the indoor fan 16, and the dew tray 18 are illustrated, and illustration is abbreviate
  • the control unit 30 rotates (reversely rotates) the indoor fan 16 in the opposite direction to that during normal air-conditioning operation.
  • the indoor fan 16 reaches the set rotation speed Rc, the brush 24b of the fan cleaning unit 24 is moved to the indoor fan 16. Make contact.
  • control unit 30 rotates the brush 24b about 180 ° around the shaft portion 24a from the state where the tip of the brush 24b faces the indoor heat exchanger 15 (see FIG. 2), and the tip of the brush 24b is placed indoors. It faces the fan 16 (see FIG. 10). As a result, the brush 24 b comes into contact with the fan blade 16 a of the indoor fan 16.
  • the indoor heat exchanger 15 (the front indoor heat exchanger 15 a) is located below the contact position K when the fan cleaning unit 24 is in contact with the indoor fan 16. And a dew pan 18 are also present.
  • the tip of the brush 24b bends as the fan blade 16a moves, and the brush 24b is pressed so as to stroke the back of the fan blade 16a.
  • the dust collected near the tip of the fan blade 16a (the end in the radial direction) is removed by the brush 24b.
  • dust tends to accumulate near the tip of the fan blade 16a. This is because during the air-conditioning operation in which the indoor fan 16 is rotating forward (see FIG. 4), air hits the vicinity of the tip of the belly of the fan blade 16a, and dust adheres to the vicinity of the tip. The air hitting the vicinity of the tip of the fan blade 16a passes through the gap between the adjacent fan blades 16a, 16a so as to follow the curved surface of the fan blade 16a.
  • the indoor fan 16 is rotated in the reverse direction, and when the indoor fan 16 reaches the set rotational speed Rc, the fan cleaning unit 24 is brought into contact with the fan blade 16a.
  • the brush 24b comes into contact with the vicinity of the front end of the fan blade 16a, and dust accumulated near the front end of the fan blade 16a is removed.
  • most of the dust accumulated in the indoor fan 16 can be removed.
  • the dust j removed from the indoor fan 16 by the brush 24b is lightly pressed against the front indoor heat exchanger 15a by wind pressure. Further, the dust j described above falls on the dew receiving tray 18 along the inclined surface (edge of the fin f) of the front indoor heat exchanger 15a (see the arrow in FIG. 10). Therefore, the dust j hardly adheres to the back surface of the up-and-down wind direction plate 23 (see FIG. 2) through a minute gap between the indoor fan 16 and the dew tray 18. This can prevent the dust j from being blown into the room during the next air conditioning operation.
  • control unit 30 may drive the indoor fan 16 at a medium / high speed rotation speed or drive the indoor fan 16 at a low speed rotation speed.
  • the range of the rotational speed in the middle and high speed range of the indoor fan 16 is, for example, not less than 300 min ⁇ 1 (300 rpm) and less than 1700 min ⁇ 1 (1700 rpm).
  • the range of the rotational speed in the low speed region of the indoor fan 16 is, for example, not less than 100 min ⁇ 1 (100 rpm) and less than 300 min ⁇ 1 (300 rpm). Thus, by rotating the indoor fan 16 in the low speed region, the indoor fan 16 can be cleaned with low noise.
  • step S104 the control unit 30 moves the fan cleaning unit 24 in step S104. That is, the control unit 30 rotates the brush 24b about 180 ° around the shaft portion 24a from the state where the tip of the brush 24b faces the indoor fan 16 (see FIG. 10), and the tip of the brush 24b exchanges heat in the room. It faces the container 15 (see FIG. 11). Thereby, it is possible to prevent the fan cleaning unit 24 from obstructing the air flow during the subsequent air conditioning operation.
  • step S105 the control unit 30 sequentially freezes and thaws the indoor heat exchanger 15.
  • the control unit 30 causes the indoor heat exchanger 15 to function as an evaporator, causes the indoor heat exchanger 15 to frost and freeze moisture contained in the air taken into the indoor unit Ui.
  • the process of freezing the indoor heat exchanger 15 is included in the matter of “attaching condensed water” to the indoor heat exchanger 15.
  • the control unit 30 When the indoor heat exchanger 15 is frozen, the control unit 30 preferably lowers the evaporation temperature of the refrigerant flowing into the indoor heat exchanger 15. That is, the control unit 30 causes the indoor heat exchanger 15 to function as an evaporator, and when the indoor heat exchanger 15 is frozen (condensed water is attached), the evaporation temperature of the refrigerant is higher than during normal air conditioning operation. The temperature of the refrigerant flowing into the indoor heat exchanger 15 is adjusted so as to be low.
  • control unit 30 causes the refrigerant having a low pressure and a low evaporation temperature to flow into the indoor heat exchanger 15 by reducing the opening of the expansion valve 14 (see FIG. 1). This makes it easier for frost and ice (symbol i shown in FIG. 11) to grow in the indoor heat exchanger 15, so that the indoor heat exchanger 15 can be washed away with a large amount of water during the subsequent thawing.
  • region located under the fan cleaning part 24 is not a downstream area of the flow of the refrigerant
  • the low-temperature gas-liquid two-phase refrigerant flows at least below (lower side) the fan cleaning unit 24, the thickness of frost and ice adhering to the indoor heat exchanger 15 can be increased. Therefore, the indoor heat exchanger 15 can be washed away with a large amount of water during the subsequent thawing.
  • the control unit 30 may close the up-and-down air direction plate 23 (see FIG. 2).
  • the angle of the up-and-down wind direction plate 23 is upward from the horizontal.
  • the control unit 30 defrosts the indoor heat exchanger 15 (step S105 in FIG. 9). For example, the control unit 30 naturally defrosts the indoor heat exchanger 15 at room temperature by maintaining the stopped state of each device. In addition, you may make it melt the frost and ice adhering to the indoor heat exchanger 15 by the control part 30 performing ventilation operation. A state in which the indoor heat exchanger 15 is being thawed will be described with reference to FIG.
  • FIG. 11 is an explanatory diagram showing a state in which the indoor heat exchanger 15 is being thawed in the air conditioner 100 according to the embodiment.
  • frost and ice adhering to the indoor heat exchanger 15 are melted, and a large amount of water w flows to the dew tray 18 through the fins f.
  • the dust j adhering to the indoor heat exchanger 15 during the air conditioning operation can be washed away.
  • the dust j adhering to the front indoor heat exchanger 15a is also washed away and flows down to the dew tray 18 (see the arrow in FIG. 11).
  • the water w that has flown down to the dew tray 18 in this way is externally connected via a drain hose (not shown) together with dust j (see FIG. 10) that has dropped directly to the dew tray 18 during cleaning of the indoor fan 16. To be discharged.
  • a drain hose not shown
  • step S ⁇ b> 105 after the indoor heat exchanger 15 is frozen and thawed (step S ⁇ b> 105), the controller 30 performs a blowing operation so that the interior of the indoor unit Ui can be dried. Good. Thereby, it is possible to suppress the propagation of bacteria in the indoor heat exchanger 15 and the like.
  • FIG. 12 is a schematic perspective view showing an indoor fan 16 and a fan cleaning unit 24A provided in an air conditioner according to another modification.
  • the fan cleaning unit 24A is installed on a rod-shaped shaft part 24d parallel to the axial direction of the indoor fan 16, a brush 24e installed on the shaft part 24d, and both ends of the shaft part 24d.
  • the fan cleaning unit 24A includes a moving mechanism that moves the fan cleaning unit 24A in the axial direction or the like.
  • the length of the fan cleaning section 24A in the direction parallel to the axial direction of the indoor fan 16 is shorter than the axial length of the indoor fan 16 itself.
  • the fan cleaning unit 24A moves in the axial direction of the indoor fan 16 (left and right as viewed from the front of the indoor unit Ui). That is, in the axial direction of the indoor fan 16, the indoor fan 16 is sequentially cleaned for each predetermined area corresponding to the length of the fan cleaning unit 24A.
  • the manufacturing cost of an air conditioner can be reduced by making it the structure which moves the fan cleaning part 24A whose length is comparatively short compared with the structure shown in FIG.
  • a rod (not shown) extending in parallel with the shaft portion 24d is provided in the vicinity of the fan cleaning portion 24A (for example, above the shaft portion 24d), and a predetermined moving mechanism (not shown) is provided along the rod.
  • the fan cleaning unit 24A may be moved. Further, after the cleaning by the fan cleaning unit 24A, a moving mechanism (not shown) may appropriately rotate or translate the fan cleaning unit 24A so that the fan cleaning unit 24A is retracted from the indoor fan 16.
  • control part 30 contacted the fan cleaning part 24 with the indoor fan 16, and demonstrated the process which rotates the indoor fan 16 in the reverse direction at the time of normal air-conditioning driving
  • the brush 24b is brought into contact with the indoor fan 16 and the indoor fan 16 is rotated in the forward direction, so that dust adhering to the vicinity of the tip of the fan blade 16a is effectively removed. Moreover, since the circuit element for reversely rotating the indoor fan 16 becomes unnecessary, the manufacturing cost of the air conditioner 100 can be reduced. Note that the rotational speed when the indoor fan 16 is normally rotated during cleaning may be any of a low speed region, a medium speed region, and a high speed region, as in the embodiment.
  • 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 thereto.
  • the control unit 30 may move the shaft portion 24 a toward the indoor fan 16 and bring the brush 24 b into contact with the indoor fan 16. Then, after the cleaning of the indoor fan 16 is completed, the control unit 30 may retract the shaft portion 24 a and separate the brush 24 b from the indoor fan 16.
  • the configuration in which the fan cleaning unit 24 includes the brush 24b has been described.
  • the configuration is not limited thereto. That is, a sponge or the like may be used as long as the indoor fan 16 can be cleaned.
  • the configuration in which the control unit 30 contacts the brush 24b of the fan cleaning unit 24 with the indoor fan 16 during cleaning of the indoor fan 16 is not limited thereto. That is, during cleaning of the indoor fan 16, the control unit 30 may bring the brush 24 b of the fan cleaning unit 24 close to the indoor fan 16. More specifically, the control unit 30 brings the brush 24b close to the indoor fan 16 to such an extent that dust accumulated at the tip of the fan blade 16a and growing to the outside in the radial direction from the tip can be removed. Even with such a configuration, dust accumulated in the indoor fan 16 can be appropriately removed.

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Abstract

This air conditioner (100) comprises: an indoor heat exchanger (15); an indoor fan (16) which feeds air to the indoor heat exchanger (15); a fan cleaning part (24) which cleans the indoor fan (16); and a control unit (30) which controls the fan cleaning part (24). If, after completion of a heating operation, the indoor fan (16) is to be cleaned by the fan cleaning part (24), the control unit (30) performs a clean of the indoor fan (16) by means of the fan cleaning part (24) after completion of the heating operation, once a first specified time has passed since the termination of said heating operation.

Description

空気調和機Air conditioner
　本発明は、空気調和機に関する。 The present invention relates to an air conditioner.
　空気調和機の室内ファン（ファン）を清掃する技術として、例えば、特許文献１には、「ファンの塵埃を除去するためのファン清掃装置」を備えるものが記載されている。また、特許文献１の図１には、ファン清掃装置が室内ファンの吹出口付近に設置された構成について記載されている。 As a technique for cleaning an indoor fan (fan) of an air conditioner, for example, Patent Document 1 describes a device including a “fan cleaning device for removing dust from a fan”. Further, FIG. 1 of Patent Document 1 describes a configuration in which a fan cleaning device is installed in the vicinity of an air outlet of an indoor fan.
特許４０４６７５５号公報Japanese Patent No. 4046755
　特許文献１に記載の技術では、ファン清掃装置は、ファンに接触させてファンの塵埃を除去するためのブラシ状部材を有する。また、ファン清掃装置は、一定時間の間それまでのモードから変更して清掃装置を作動させる運転モード変更手段を備えており、運転時間積算手段によって所定の運転時間が積算される毎に、一定時間の間それまでのモードから変更してユーザの指示なしに自動的に清掃運転を行うことができるとしている。しかしながら、前記運転モード変更手段の場合、運転モードを変更する前の状態を考慮していないため、運転モードの状況により、ブラシの変形が進むなどの問題があった。 In the technique described in Patent Document 1, the fan cleaning device has a brush-like member for removing dust from the fan by contacting the fan. Further, the fan cleaning device is provided with an operation mode changing means for operating the cleaning device by changing the mode from the previous mode for a certain time, and every time a predetermined operation time is accumulated by the operation time accumulating means, the fan cleaning device is constant. The mode is changed from the previous mode for a period of time, and the cleaning operation can be automatically performed without a user instruction. However, in the case of the operation mode changing means, since the state before changing the operation mode is not considered, there is a problem that the deformation of the brush proceeds depending on the state of the operation mode.
　そこで、本発明は、ファン清掃部材の変形を防止することができる空気調和機を提供することを課題とする。 Therefore, an object of the present invention is to provide an air conditioner that can prevent deformation of the fan cleaning member.
　前記課題を解決するために、本発明に係る空気調和機は、室内熱交換器と、室内熱交換器に空気を送り込む送風ファン（例えば、室内ファン１６）と、送風ファンを清掃するファン清掃部と、ファン清掃部を制御する制御部と、を備え、制御部は、暖房運転終了後に、ファン清掃部によって送風ファンを清掃する場合には、暖房運転終了後、当該暖房運転の停止時から第１の所定時間が経過した後に、ファン清掃部による送風ファンの清掃を実行することを特徴とする。本発明のその他の態様については、後記する実施形態において説明する。 In order to solve the above problems, an air conditioner according to the present invention includes an indoor heat exchanger, a blower fan (for example, the indoor fan 16) that sends air to the indoor heat exchanger, and a fan cleaning unit that cleans the blower fan. And a control unit that controls the fan cleaning unit.When the fan cleaning unit is cleaned by the fan cleaning unit after the heating operation is completed, the control unit starts after the heating operation is stopped after the heating operation is stopped. After the predetermined time of 1 elapses, the fan cleaning unit performs cleaning of the blower fan. Other aspects of the present invention will be described in the embodiments described later.
　本発明によれば、ファン清掃部材の変形を防止することができる。 According to the present invention, deformation of the fan cleaning member can be prevented.
実施形態に係る空気調和機を示す外観構成図である。It is an external appearance block diagram which shows the air conditioner which concerns on embodiment. 実施形態に係る空気調和機の室内機の側断面構成を示す説明図である。It is explanatory drawing which shows the side cross-sectional structure of the indoor unit of the air conditioner which concerns on embodiment. 実施形態に係る室内機のランプ表示部を示す説明図である。It is explanatory drawing which shows the lamp display part of the indoor unit which concerns on embodiment. クリーンランプ点灯時であり、フィルタ清掃モードを示す説明図である。It is explanatory drawing which shows the filter cleaning mode at the time of a clean lamp lighting. クリーンランプ点灯時であり、ファン清掃モード（第１の所定時間内）を示す説明図である。It is explanatory drawing which shows the fan cleaning mode (within 1st predetermined time) at the time of a clean lamp lighting. クリーンランプ点灯時であり、ファン清掃モード（第１の所定時間後）を示す説明図である。It is explanatory drawing which shows a fan cleaning mode (after 1st predetermined time) at the time of a clean lamp lighting. 実施形態に係る空気調和機の冷媒回路を示す説明図である。It is explanatory drawing which shows the refrigerant circuit of the air conditioner which concerns on embodiment. 実施形態に係る空気調和機が備える室内機の一部を切り欠いた斜視図である。It is the perspective view which notched some indoor units with which the air conditioner concerning an embodiment is provided. 実施形態に係る空気調和機において、空調運転中におけるファン清掃部付近の空気の流れを示す説明図である。In the air conditioner which concerns on embodiment, it is explanatory drawing which shows the flow of the air of the fan cleaning part vicinity during an air conditioning driving | operation. 実施形態に係る空気調和機の制御機能を示すブロック図である。It is a block diagram which shows the control function of the air conditioner which concerns on embodiment. 実施形態に係る空気調和機の制御部が実行する制御処理を示すフローチャートである。It is a flowchart which shows the control processing which the control part of the air conditioner which concerns on embodiment performs. 実施形態に係る空気調和機において、室内ファンの清掃中の状態を示す説明図である。In the air conditioner concerning an embodiment, it is an explanatory view showing the state under cleaning of an indoor fan. 実施形態に係る空気調和機において、室内熱交換器の解凍中の状態を示す説明図である。In the air conditioner which concerns on embodiment, it is explanatory drawing which shows the state in the process of defrosting of an indoor heat exchanger. 本発明の別の変形例に係る空気調和機が備える室内ファン及びファン清掃部を示す模式的な斜視図である。It is a typical perspective view which shows the indoor fan and fan cleaning part with which the air conditioner which concerns on another modification of this invention is provided.
　本発明を実施するための実施形態について、適宜図面を参照しながら詳細に説明する。
　図１は、実施形態に係る空気調和機の外観構成を示す図である。空気調和機１００は、冷凍サイクル（ヒートポンプサイクル）で冷媒を循環させることによって、空調を行う機器である。空気調和機１００は、室内機Ｕｉと、室外機Ｕｏと、赤外線、電波、通信線等により室内機Ｕｉと通信してユーザが空気調和機１００を操作するためのリモコン４０（空調制御端末）とを有してなる。また、室内機Ｕｉと室外機Ｕｏとは、冷媒配管と通信ケーブルで接続されている。室内機Ｕｉには、撮像部２８が、左右方向中央に配置されている。リモコン送受信部２７は、室内機Ｕｉの前方下部付近のリモコン信号を受信しやすい位置に配置している。また、撮像部２８の横には、ランプの点灯により各種の運転状態を示すランプ表示部５０（図３参照）を有している。 DESCRIPTION OF EMBODIMENTS Embodiments for carrying out the present invention will be described in detail with reference to the drawings as appropriate.
Drawing 1 is a figure showing the appearance composition of the air harmony machine concerning an embodiment. The air conditioner 100 is an apparatus that performs air conditioning by circulating a refrigerant in a refrigeration cycle (heat pump cycle). The air conditioner 100 includes an indoor unit Ui, an outdoor unit Uo, a remote controller 40 (air conditioning control terminal) for the user to operate the air conditioner 100 by communicating with the indoor unit Ui through infrared rays, radio waves, communication lines, and the like. It has. Further, the indoor unit Ui and the outdoor unit Uo are connected to the refrigerant pipe by a communication cable. In the indoor unit Ui, the imaging unit 28 is disposed at the center in the left-right direction. The remote control transmission / reception unit 27 is arranged at a position where it is easy to receive a remote control signal near the lower front part of the indoor unit Ui. Further, a lamp display unit 50 (see FIG. 3) indicating various operation states by lighting of the lamp is provided beside the imaging unit 28.
　図２は、実施形態に係る空気調和機１００が備える室内機Ｕｉの縦断面構成を示す説明図である。室内機Ｕｉは、室内熱交換器１５や室内ファン１６の他に、露受皿１８と、筐体ベース１９と、フィルタ２０ａ，２０ｂと、前面パネル２１と、左右風向板２２と、上下風向板２３と、ファン清掃部２４と、を備えている。なお、図２では、ファン清掃部２４による室内ファン１６の清掃が行われていない状態を図示している。 FIG. 2 is an explanatory diagram illustrating a vertical cross-sectional configuration of the indoor unit Ui included in the air conditioner 100 according to the embodiment. In addition to the indoor heat exchanger 15 and the indoor fan 16, the indoor unit Ui includes a dew tray 18, a housing base 19, filters 20 a and 20 b, a front panel 21, a left and right wind direction plate 22, and an up and down wind direction plate 23. And a fan cleaning unit 24. FIG. 2 illustrates a state where the indoor fan 16 is not cleaned by the fan cleaning unit 24.
　室内熱交換器１５は、複数のフィンｆと、それらのフィンｆを貫通する複数の伝熱管ｇと、を有している。また、別の観点から説明すると、室内熱交換器１５は、前側室内熱交換器１５ａと、後側室内熱交換器１５ｂと、を有している。前側室内熱交換器１５ａは、室内ファン１６の前側に配置されている。一方、後側室内熱交換器１５ｂは、室内ファン１６の後側に配置されている。そして、前側室内熱交換器１５ａの上端部と、後側室内熱交換器１５ｂの上端部と、が接続されている。 The indoor heat exchanger 15 has a plurality of fins f and a plurality of heat transfer tubes g penetrating the fins f. Moreover, if it demonstrates from another viewpoint, the indoor heat exchanger 15 has the front side indoor heat exchanger 15a and the back side indoor heat exchanger 15b. The front indoor heat exchanger 15 a is disposed on the front side of the indoor fan 16. On the other hand, the rear indoor heat exchanger 15 b is disposed on the rear side of the indoor fan 16. And the upper end part of the front side indoor heat exchanger 15a and the upper end part of the rear side indoor heat exchanger 15b are connected.
　露受皿１８は、室内熱交換器１５の凝縮水を受けるものであり、室内熱交換器１５（図２に示す例では、前側室内熱交換器１５ａ）の下方に配置されている。 The dew receiving tray 18 receives the condensed water of the indoor heat exchanger 15, and is disposed below the indoor heat exchanger 15 (the front indoor heat exchanger 15a in the example shown in FIG. 2).
　室内ファン１６は、例えば、円筒状のクロスフローファンであり、室内熱交換器１５の付近に配置されている。室内ファン１６は、複数のファンブレード１６ａと、これらのファンブレード１６ａが設置される仕切板１６ｂと、駆動源である室内ファンモータ１６ｍ（図８参照）と、を備えている。 The indoor fan 16 is, for example, a cylindrical cross flow fan, and is disposed in the vicinity of the indoor heat exchanger 15. The indoor fan 16 includes a plurality of fan blades 16a, a partition plate 16b on which these fan blades 16a are installed, and an indoor fan motor 16m (see FIG. 8) as a drive source.
　なお、室内ファン１６は、親水性のコーティング剤でコーティングされていることが好ましい。このようなコーティング材として、例えば、親水性材料であるイソプロピルアルコール分散シリカゾルに、バインダー（加水分解性基を有するケイ素化合物）、ブタノール、テトラヒドロフラン、及び抗菌剤を添加したものを用いてもよい。 The indoor fan 16 is preferably coated with a hydrophilic coating agent. As such a coating material, for example, a material obtained by adding a binder (silicon compound having a hydrolyzable group), butanol, tetrahydrofuran, and an antibacterial agent to isopropyl alcohol-dispersed silica sol which is a hydrophilic material may be used.
　これによって、室内ファン１６の表面に親水性膜が形成されるため、室内ファン１６の表面の電気抵抗値が小さくなり、室内ファン１６に塵埃が付着しにくくなる。つまり、室内ファン１６の駆動中、空気との摩擦に伴う静電気が室内ファン１６の表面に生じにくくなるため、室内ファン１６への塵埃の付着を抑制できる。このように、前記したコーティング剤は、室内ファン１６の帯電防止剤としても機能する。 Thereby, since a hydrophilic film is formed on the surface of the indoor fan 16, the electrical resistance value on the surface of the indoor fan 16 is reduced, and dust is less likely to adhere to the indoor fan 16. In other words, static electricity associated with friction with air is less likely to be generated on the surface of the indoor fan 16 while the indoor fan 16 is being driven, so that the adhesion of dust to the indoor fan 16 can be suppressed. Thus, the coating agent described above also functions as an antistatic agent for the indoor fan 16.
　図２に示す筐体ベース１９は、室内熱交換器１５や室内ファン１６等の機器が設置される筐体である。フィルタ２０ａは、前側の空気吸込口ｈ１に向かう空気から塵埃を除去するものであり、室内熱交換器１５の前側に設置されている。フィルタ２０ｂは、上側の空気吸込口ｈ２に向かう空気から塵埃を除去するものであり、室内熱交換器１５の上側に設置されている。 The housing base 19 shown in FIG. 2 is a housing in which devices such as the indoor heat exchanger 15 and the indoor fan 16 are installed. The filter 20 a is for removing dust from the air toward the front air inlet h <b> 1 and is installed on the front side of the indoor heat exchanger 15. The filter 20b removes dust from the air toward the upper air suction port h2, and is installed on the upper side of the indoor heat exchanger 15.
　前面パネル２１は、前側のフィルタ２０ａを覆うように設置されるパネルであり、下端を軸として前側に回動可能になっている。なお、前面パネル２１が回動しない構成であってもよい。 The front panel 21 is a panel installed so as to cover the filter 20a on the front side, and is rotatable to the front side with the lower end as an axis. The front panel 21 may be configured not to rotate.
　左右風向板２２は、室内ファン１６の回転に伴って室内に吹き出される空気の左右方向の流れを調整する板状部材である。左右風向板２２は、吹出風路ｈ３に配置され、左右風向板用モータ２５（図８参照）によって左右方向に回動するようになっている。上下風向板２３は、室内ファン１６の回転に伴って室内に吹き出される空気の上下方向の流れを調整する板状部材である。上下風向板２３は、空気吹出口ｈ４の付近に配置され、上下風向板用モータ２６（図８参照）によって上下方向に回動するようになっている。 The left and right wind direction plate 22 is a plate-like member that adjusts the flow in the left and right direction of the air blown into the room as the indoor fan 16 rotates. The left and right wind direction plates 22 are arranged in the blowing air path h3 and are rotated in the left and right directions by a left and right wind direction plate motor 25 (see FIG. 8). The vertical wind direction plate 23 is a plate-like member that adjusts the vertical flow of air blown into the room as the indoor fan 16 rotates. The vertical wind direction plate 23 is disposed in the vicinity of the air outlet h4 and is rotated in the vertical direction by the vertical wind direction plate motor 26 (see FIG. 8).
　空気吸込口ｈ１，ｈ２を介して吸い込まれた空気は、室内熱交換器１５の伝熱管ｇを通流する冷媒と熱交換し、熱交換した空気が吹出風路ｈ３に導かれる。この吹出風路ｈ３を通流する空気は、左右風向板２２及び上下風向板２３によって所定方向に導かれ、さらに、空気吹出口ｈ４を介して室内に吹き出される。 The air sucked through the air suction ports h1 and h2 exchanges heat with the refrigerant flowing through the heat transfer tube g of the indoor heat exchanger 15, and the heat-exchanged air is guided to the blowout air path h3. The air flowing through the blowout air path h3 is guided in a predetermined direction by the left and right airflow direction plates 22 and the vertical airflow direction plate 23, and further blown out into the room through the air outlet h4.
　空気の流れに伴って空気吸込口ｈ１，ｈ２に向かう塵埃の多くは、フィルタ２０ａ，２０ｂで捕集される。しかしながら、細かい塵埃がフィルタ２０ａ，２０ｂを通り抜けて、室内熱交換器１５や室内ファン１６に付着することがある。したがって、室内熱交換器１５や室内ファン１６を定期的に清掃することが望ましい。そこで、本実施形態では、次に説明するファン清掃部２４を用いて室内ファン１６を清掃した後、室内熱交換器１５を水で洗い流すようにしている。 Most of the dust traveling toward the air inlets h1 and h2 along with the air flow is collected by the filters 20a and 20b. However, fine dust may pass through the filters 20 a and 20 b and adhere to the indoor heat exchanger 15 and the indoor fan 16. Therefore, it is desirable to periodically clean the indoor heat exchanger 15 and the indoor fan 16. Therefore, in the present embodiment, the indoor heat exchanger 15 is washed away with water after the indoor fan 16 is cleaned using the fan cleaning unit 24 described below.
　図２に示すファン清掃部２４は、室内ファン１６を清掃するものであり、室内熱交換器１５と室内ファン１６との間に配置されている。より詳しく説明すると、縦断面視で＜字状を呈する前側室内熱交換器１５ａの凹部ｒに、ファン清掃部２４が配置されている。図２に示す例では、ファン清掃部２４の下方に、室内熱交換器１５（前側室内熱交換器１５ａの下部）が存在するとともに、露受皿１８が存在している。ファン清掃部２４は、例えば、一部がナイロンで構成される。 The fan cleaning unit 24 shown in FIG. 2 cleans the indoor fan 16 and is disposed between the indoor heat exchanger 15 and the indoor fan 16. More specifically, the fan cleaning unit 24 is disposed in the recess r of the front indoor heat exchanger 15a that has a <shape when viewed in a longitudinal section. In the example shown in FIG. 2, an indoor heat exchanger 15 (a lower portion of the front indoor heat exchanger 15 a) is present below the fan cleaning unit 24, and a dew tray 18 is present. A part of the fan cleaning unit 24 is made of nylon, for example.
　本実施形態の室内ファン１６のファン清掃について、従来の課題とともに説明する。
　前記した特許文献１のファン清掃装置は、一定時間の間それまでのモードから変更して清掃装置を作動させる運転モード変更手段を備えており、運転時間積算手段によって所定の運転時間が積算される毎に、一定時間の間それまでのモードから変更してユーザの指示なしに自動的に清掃運転を行うことができるとしている。しかしながら、運転モード変更手段で変更される前の運転モードが暖房運転モードであると、暖房運転直後はブラシ２４ｂに熱が加わった状態であり、そのまま、ファン清掃を実施するとブラシ２４ｂが変形する問題がある。 The fan cleaning of the indoor fan 16 according to the present embodiment will be described together with conventional problems.
The fan cleaning device described in Patent Document 1 includes operation mode changing means for operating the cleaning device by changing from the previous mode for a certain time, and a predetermined operation time is accumulated by the operation time accumulating means. Every time, the mode is changed from the previous mode for a certain period of time, and the cleaning operation can be automatically performed without a user instruction. However, if the operation mode before being changed by the operation mode changing means is the heating operation mode, heat is applied to the brush 24b immediately after the heating operation, and the brush 24b is deformed if the fan cleaning is performed as it is. There is.
　本実施形態のファン清掃では、暖房運転モード終了後に、ファン清掃部２４によって室内ファン１６を清掃する場合には、暖房運転終了後、当該暖房運転の停止時から第１の所定時間が経過した後に、ファン清掃部２４による室内ファン１６の清掃を実行することを特徴とする。これにより、暖房運転モードによってブラシ２４ｂに加わった熱を逃がすことで、ブラシ２４ｂの変形を防ぐことができる。 In the fan cleaning of this embodiment, when the indoor fan 16 is cleaned by the fan cleaning unit 24 after the heating operation mode ends, after the heating operation ends, after the first predetermined time has elapsed since the heating operation stopped. The cleaning of the indoor fan 16 by the fan cleaning unit 24 is performed. Thereby, the deformation | transformation of the brush 24b can be prevented by releasing the heat added to the brush 24b by heating operation mode.
　本実施形態のファン清掃では、暖房運転の停止時から前記第１の所定時間が経過するまでの間、前記送風ファンを第１の回転速度で駆動する。そして、ファン清掃部２４による室内ファン１６の清掃を開始する際に、第１の回転速度よりも速い第２の回転速度とする。これにより、暖房運転モード終了直後の場合は、室内機内の熱気を逃がすとともに、ファン清掃を短時間で行うことができる。 In the fan cleaning according to the present embodiment, the blower fan is driven at the first rotational speed until the first predetermined time elapses after the heating operation is stopped. And when cleaning of the indoor fan 16 by the fan cleaning part 24 is started, it is set as 2nd rotational speed higher than 1st rotational speed. Thereby, in the case of immediately after the end of the heating operation mode, hot air in the indoor unit can be released and fan cleaning can be performed in a short time.
　また、本実施形態のファン清掃では、冷房又は除湿の運転モード終了後に、ファン清掃部２４によって室内ファン１６を清掃する場合には、第２の所定時間（第２の所定時間＜第１の所定時間）の間、室内ファン１６を第１の回転速度で駆動し、第２の所定時間が経過した後に、ファン清掃部２４による室内ファン１６の清掃を開始する際に、室内ファン１６の回転速度を第１の回転速度よりも大きい第２の回転速度とする。これにより、冷房又は除湿の運転モード終了直後の場合は、室内を乾燥させるとともに、ファン清掃を短時間で行うことができる。 In the fan cleaning of the present embodiment, when the indoor fan 16 is cleaned by the fan cleaning unit 24 after the cooling or dehumidifying operation mode ends, the second predetermined time (second predetermined time <first predetermined time). Time), the indoor fan 16 is driven at the first rotational speed, and the rotational speed of the indoor fan 16 is started when the fan cleaning unit 24 starts cleaning the indoor fan 16 after the second predetermined time has elapsed. Is a second rotational speed greater than the first rotational speed. Thereby, in the case of immediately after the end of the cooling or dehumidifying operation mode, the room can be dried and the fan can be cleaned in a short time.
＜ランプ表示部＞
　図３は、実施形態に係る室内機Ｕｉのランプ表示部を示す説明図である。ランプ表示部５０のランプの点灯により運転状態を示す。ランプには、運転中に点灯する「運転」ランプ、タイマー予約中等に点灯する「タイマー」ランプ、フィルタの清掃中（フィルタ清掃モード）・室内ファンの清掃中（ファン清掃モード）・熱交換器の洗浄中（洗浄モード）等に点灯する「クリーン」ランプ、ｅｃｏ運転中に点灯する「ｅｃｏ」ランプ、人を検出すると点灯する「在室」ランプ、ｅｃｏ運転中にオートオフ設定中又はオートセーブ中等に点灯する「オートオフ」ランプ、予熱・霜とり運転中に点灯する「予熱・霜とり」ランプ、カビの発生のみはり中に点灯する「みはり」ランプ等がある。 <Lamp display>
FIG. 3 is an explanatory diagram illustrating a lamp display unit of the indoor unit Ui according to the embodiment. The operation state is indicated by the lighting of the lamp of the lamp display unit 50. The lamp includes a “run” lamp that lights during operation, a “timer” lamp that lights during timer reservation, etc., during filter cleaning (filter cleaning mode), indoor fan cleaning (fan cleaning mode), and heat exchanger “Clean” lamp that lights up during cleaning (cleaning mode), “eco” lamp that lights up during eco operation, “in-room” lamp that lights up when a person is detected, auto-off setting or auto-save during eco operation, etc. There are “auto-off” lamps that are lit at “1”, “preheating and defrosting” lamps that are lit during preheating / defrosting operation, “mihari” lamps that are lit only during the occurrence of mold.
　本実施形態では、図４を参照して、ファン清掃モードの表示ランプを、フィルタ清掃モードの表示ランプと比較して説明する。 In the present embodiment, the fan cleaning mode display lamp will be described with reference to FIG. 4 in comparison with the filter cleaning mode display lamp.
　図４Ａは、クリーンランプ点灯時であり、フィルタ清掃モードを示す説明図である。図４Ｂは、クリーンランプ点灯時であり、ファン清掃モード（第１の所定時間内）を示す説明図である。図４Ｃは、クリーンランプ点灯時であり、ファン清掃モード（第１の所定時間後）を示す説明図である。なお、図４Ａ、図４Ｂ、図４Ｃの左側はランプ表示部５０の表示を示し、右側は、図２に示した室内機Ｕｉの側断面構成で各モードの運転状態を示す。 FIG. 4A is an explanatory diagram showing the filter cleaning mode when the clean lamp is turned on. FIG. 4B is an explanatory diagram showing a fan cleaning mode (within a first predetermined time) when the clean lamp is on. FIG. 4C is an explanatory diagram showing the fan cleaning mode (after the first predetermined time) when the clean lamp is on. 4A, FIG. 4B, and FIG. 4C show the display of the lamp display unit 50, and the right side shows the operation state of each mode in the side sectional configuration of the indoor unit Ui shown in FIG.
（１）フィルタ清掃モードは、条件を満たすと運転停止時に、自動でフィルタを清掃するモードである。リモコンを操作してフィルタを清掃することもできる。
（２）ファン清掃モードは、空調運転後に、自動で室内ファン１６を清掃するモードである。リモコンを操作して送風ファンを清掃することもできる。 (1) The filter cleaning mode is a mode for automatically cleaning the filter when the operation is stopped when the condition is satisfied. The filter can also be cleaned by operating the remote control.
(2) The fan cleaning mode is a mode in which the indoor fan 16 is automatically cleaned after the air conditioning operation. The fan can be cleaned by operating the remote control.
　２つのモードのいずれも、構成部品を「クリーン」にする機能であるので、「クリーン」ランプが用いられる。しかしながら、「クリーン」ランプの点灯だけでは、どのモードが起動しているかユーザには不明であるので、以下のように機能分けをしている。 ¡A “clean” lamp is used because both of the two modes are functions that make the component “clean”. However, since only the lighting of the “clean” lamp is unclear to the user which mode is activated, the functions are classified as follows.
　図４Ａのフィルタ清掃モードの場合、ランプ表示部５０の「クリーン」ランプが点灯し、室内機Ｕｉの上下風向板２３は、運転停止中の位置である。ユーザは、これにより、空調運転が停止しており、室内機Ｕｉの内部清掃（具体的には、フィルタ２０ａ，２０ｂ）が行われていることがわかる。 4A, in the filter cleaning mode of FIG. 4A, the “clean” lamp of the lamp display unit 50 is turned on, and the up / down wind direction plate 23 of the indoor unit Ui is at a position where the operation is stopped. Thus, the user knows that the air-conditioning operation is stopped and the internal cleaning of the indoor unit Ui (specifically, the filters 20a and 20b) is being performed.
　図４Ｂ、図４Ｃのファン清掃モードの場合、ランプ表示部５０の「運転」ランプが点灯するとともに、「クリーン」ランプが点灯している。ファン清掃の前処理である第１の所定期間内では、図４Ｂに示すように、室内機Ｕｉの上下風向板２３の向きは、水平方向又は室内空間の上向き方向に設定されている。基本的に送風されるので、室内の人に送風を当てないように、水平方向又は室内空間の上向き方向としている。これにより、ユーザは、送風運転中であり、室内機Ｕｉの室内ファン１６の清掃が行われていることがわかる。なお、上下風向板２３の向きは、水平から１０度ほど下方に向けていてもよい。この場合においても、室内の人に送風を当てないようにすることができる。そこで、水平から１０度ほど下方に向けた向きも室内空間に対し上方向に含まれるものとする。 4B and 4C, in the fan cleaning mode, the “run” lamp of the lamp display unit 50 is lit and the “clean” lamp is lit. Within the first predetermined period, which is a pre-process for fan cleaning, as shown in FIG. 4B, the direction of the up-down air direction plate 23 of the indoor unit Ui is set to the horizontal direction or the upward direction of the indoor space. Since the air is basically blown, the horizontal direction or the upward direction of the indoor space is set so as not to blow the air to indoor persons. Thereby, the user can understand that the air blowing operation is being performed and the indoor fan 16 of the indoor unit Ui is being cleaned. In addition, the direction of the up-down wind direction plate 23 may be directed downward by about 10 degrees from the horizontal. Even in this case, it is possible to prevent air from being blown on the person in the room. Therefore, it is assumed that the direction downward about 10 degrees from the horizontal is also included in the upward direction with respect to the indoor space.
　図４Ｃの第１の所定時間後のファン清掃モードの場合、ランプ表示部５０の「運転」ランプが点灯するとともに、「クリーン」ランプが点灯している。ランプの点灯だけみると、図４Ｂと同じであるので、識別することができない。しかしながら、図４Ｃの場合には、室内機Ｕｉの上下風向板２３の向きは、運転停止中の位置に設定されている。また、前面パネル２１も閉じている。これにより、ユーザは、ファン清掃が行われていることがわかる。なお、図４Ｃにおいて、上下風向板２３を閉じているが、図４Ｂの風向位置で、ファン清掃を行ってもよい。また、図４Ｃにおいて、前面パネル２１が閉じているが、図４Ｂのように開いた状態で、ファン清掃を行ってもよい。 In the fan cleaning mode after the first predetermined time in FIG. 4C, the “RUN” lamp of the lamp display unit 50 is lit and the “CLEAN” lamp is lit. Since only the lighting of the lamp is the same as FIG. 4B, it cannot be identified. However, in the case of FIG. 4C, the direction of the up-and-down air direction plate 23 of the indoor unit Ui is set to a position where the operation is stopped. The front panel 21 is also closed. Thereby, the user knows that fan cleaning is performed. In FIG. 4C, the vertical wind direction plate 23 is closed, but fan cleaning may be performed at the wind direction position in FIG. 4B. Further, in FIG. 4C, the front panel 21 is closed, but fan cleaning may be performed with the front panel 21 opened as shown in FIG. 4B.
　すなわち、空気調和機１００の制御部３０（図８参照）は、暖房運転の停止時から第１の所定時間が経過するまでの間、上下風向板２３を室内空間に対し上方向又は水平方向に向けて、室内ファン１６を駆動する。制御部３０は、暖房運転の停止時から第１の所定時間が経過した後、上下風向板２３を室内空間に対し上方向又は水平方向に向けた状態を維持するか、又は、上下風向板２３を閉じるとよい。これにより、暖房運転モード終了後の第１の所定時間内に熱を逃がすことでブラシ２４ｂの変形を防ぐことができる。また、ファン清掃時には、室内の人に送風を当てないようにすることができる。 That is, the control unit 30 (see FIG. 8) of the air conditioner 100 moves the vertical airflow direction plate 23 upward or horizontally with respect to the indoor space until the first predetermined time elapses after the heating operation is stopped. Then, the indoor fan 16 is driven. After the first predetermined time has elapsed since the heating operation was stopped, the control unit 30 maintains the state in which the up / down wind direction plate 23 is directed upward or horizontally with respect to the indoor space, or the up / down wind direction plate 23. It is good to close. Thereby, deformation | transformation of the brush 24b can be prevented by releasing heat within the 1st predetermined time after completion | finish of heating operation mode. In addition, when cleaning the fan, it is possible to prevent air from being blown on a person in the room.
　空気調和機１００は、運転状態を表示する１以上の表示ランプを備え、制御部３０は、暖房運転の停止時から前記第１の所定時間が経過するまでの間、ファン清掃部２４による室内ファン１６の清掃中に点灯するのと同じ表示ランプを点灯するとよい。これにより、送風時において、クリーン清掃が行われていることがわかる。 The air conditioner 100 includes one or more display lamps that display the operation state, and the control unit 30 performs the indoor fan operation by the fan cleaning unit 24 from when the heating operation is stopped until the first predetermined time elapses. The same indicator lamp that is lit during 16 cleaning may be lit. Thereby, it turns out that clean cleaning is performed at the time of ventilation.
　図４Ａで示したフィルタ清掃モードとファン清掃モードとの関係について説明する。
フィルタ清掃モードを有する室内機Ｕｉは、フィルタ清掃部（フィルタ清掃手段）を備えている。室内機Ｕｉ（図２）に示される室内熱交換器１５（図２）は、その上方又は前方にフィルタ２０ａ，２０ｂ（図２）を備え、大きな埃を取り除くことで室内熱交換器１０２、室内ファン１６の汚れを防止している。フィルタ２０ａ，２０ｂに埃が堆積すると目詰まりを起こし、室内熱交換器１５を通過する空気が減少し、室内機Ｕｉの冷暖房能力が減衰する。これを防ぐため、フィルタ清掃部は、室内機Ｕｉは、冷暖房等運転終了後、ブラシ（図示せず）を用いてフィルタ２０ａ，２０ｂを自動的に清掃する。 The relationship between the filter cleaning mode and the fan cleaning mode shown in FIG. 4A will be described.
The indoor unit Ui having the filter cleaning mode includes a filter cleaning unit (filter cleaning means). An indoor heat exchanger 15 (FIG. 2) shown in the indoor unit Ui (FIG. 2) includes filters 20a and 20b (FIG. 2) above or in front of the indoor unit Ui (FIG. 2). The fan 16 is prevented from being soiled. When dust accumulates on the filters 20a and 20b, clogging occurs, air passing through the indoor heat exchanger 15 is reduced, and the air conditioning capability of the indoor unit Ui is attenuated. In order to prevent this, the filter cleaning unit automatically cleans the filters 20a and 20b using a brush (not shown) after the indoor unit Ui has finished the operation such as air conditioning.
　空気吸込口ｈ１，ｈ２に向かう塵埃の多くは、フィルタ２０ａ，２０ｂで捕集される。しかしながら、細かい塵埃がフィルタ２０ａ，２０ｂを通り抜けて、室内ファン１６に付着することがあるため、室内ファン１６を定期的に清掃することが望ましい。 Most of the dust traveling toward the air inlets h1 and h2 is collected by the filters 20a and 20b. However, since fine dust may pass through the filters 20a and 20b and adhere to the indoor fan 16, it is desirable to clean the indoor fan 16 periodically.
　そこで、前記第１の所定時間中に、フィルタ清掃部によるフィルタ２０ａ，２０ｂの清掃を実行することが望ましい。これにより、ファン清掃の前処理である第１の所定時間内にフィルタ清掃もできるので、空気調和機１００のクリーン処理を適切にできる。この際は、上下風向板２３は、完全に閉じる必要はないが、上方に向けていることが望ましい。 Therefore, it is desirable to execute the cleaning of the filters 20a and 20b by the filter cleaning unit during the first predetermined time. Thereby, since the filter cleaning can also be performed within the first predetermined time which is the pre-processing of the fan cleaning, the clean processing of the air conditioner 100 can be appropriately performed. At this time, the vertical wind direction plate 23 does not need to be completely closed, but is preferably directed upward.
　すなわち、空気調和機１００が、室内熱交換器の空気吸込側に設置されたフィルタの清掃を行うフィルタ清掃部（フィルタ清掃手段）を備えている場合、暖房運転の停止時から第１の所定時間が経過するまでの間に、フィルタ清掃部によるフィルタの清掃を実行してもよい。 That is, when the air conditioner 100 includes a filter cleaning unit (filter cleaning means) that cleans the filter installed on the air suction side of the indoor heat exchanger, the first predetermined time from when the heating operation is stopped. Until the time elapses, the filter may be cleaned by the filter cleaning unit.
　あるいは、フィルタ清掃時間が第１の所定時間よりも長い場合、フィルタ清掃部によるフィルタの清掃を実行している期間中の少なくとも一部の期間に、室内ファン１６を駆動することにより、室内機Ｕｉの熱気を逃がしてもよい。空気調和機１００の機種によるが、例えば、フィルタ清掃時間は約２０分、ファン清掃の前処理期間である第１の所定時間は約５分である場合がある。 Alternatively, when the filter cleaning time is longer than the first predetermined time, the indoor unit Ui is driven by driving the indoor fan 16 during at least a part of the period during which the filter is cleaned by the filter cleaning unit. You may escape the heat. Depending on the model of the air conditioner 100, for example, the filter cleaning time may be about 20 minutes, and the first predetermined time that is a preprocessing period of fan cleaning may be about 5 minutes.
　以下、ファン清掃部２４の詳細について図５～図１２を参照して説明する。
　図５は、実施形態に係る空気調和機１００の冷媒回路Ｑの説明図である。図５の実線矢印は、暖房運転時における冷媒の流れを示している。図５の破線矢印は、冷房運転時における冷媒の流れを示している。図５に示すように、空気調和機１００は、圧縮機１１と、室外熱交換器１２と、室外ファン１３と、膨張弁１４と、を備えている。また、空気調和機１００は、前記した構成の他に、室内熱交換器（熱交換器）１５と、室内ファン（送風ファン）１６と、四方弁１７と、を備えている。 Hereinafter, the details of the fan cleaning unit 24 will be described with reference to FIGS.
FIG. 5 is an explanatory diagram of the refrigerant circuit Q of the air conditioner 100 according to the embodiment. The solid line arrow of FIG. 5 has shown the flow of the refrigerant | coolant at the time of heating operation. The broken line arrows in FIG. 5 indicate the flow of the refrigerant during the cooling operation. As shown in FIG. 5, the air conditioner 100 includes a compressor 11, an outdoor heat exchanger 12, an outdoor fan 13, and an expansion valve 14. The air conditioner 100 includes an indoor heat exchanger (heat exchanger) 15, an indoor fan (blower fan) 16, and a four-way valve 17 in addition to the above-described configuration.
　圧縮機１１は、圧縮機モータ１１ａの駆動によって、低温低圧のガス冷媒を圧縮し、高温高圧のガス冷媒として吐出する機器である。室外熱交換器１２は、その伝熱管（図示せず）を通流する冷媒と、室外ファン１３から送り込まれる外気と、の間で熱交換が行われる熱交換器である。 The compressor 11 is a device that compresses a low-temperature and low-pressure gas refrigerant by driving the compressor motor 11a and discharges it as a high-temperature and high-pressure gas refrigerant. The outdoor heat exchanger 12 is a heat exchanger in which heat exchange is performed between the refrigerant flowing through the heat transfer tube (not shown) and the outside air sent from the outdoor fan 13.
　室外ファン１３は、室外ファンモータ１３ａの駆動によって、室外熱交換器１２に外気を送り込むファンであり、室外熱交換器１２の付近に設置されている。膨張弁１４は、「凝縮器」（冷房運転の場合は室外熱交換器１２、暖房運転の場合は室内熱交換器１５）で凝縮した冷媒を減圧する弁である。なお、膨張弁１４において減圧された冷媒は、「蒸発器」（冷房運転の場合は室内熱交換器１５、暖房運転の場合は室外熱交換器１２）に導かれる。 The outdoor fan 13 is a fan that sends outside air to the outdoor heat exchanger 12 by driving the outdoor fan motor 13a, and is installed in the vicinity of the outdoor heat exchanger 12. The expansion valve 14 is a valve that depressurizes the refrigerant condensed in the “condenser” (the outdoor heat exchanger 12 in the cooling operation and the indoor heat exchanger 15 in the heating operation). Note that the refrigerant decompressed in the expansion valve 14 is guided to an “evaporator” (the indoor heat exchanger 15 in the cooling operation, and the outdoor heat exchanger 12 in the heating operation).
　室内熱交換器１５は、その伝熱管ｇ（図２参照）を通流する冷媒と、室内ファン１６から送り込まれる室内空気（空調対象空間の空気）と、の間で熱交換が行われる熱交換器である。室内ファン１６は、室内ファンモータ１６ｍ（駆動装置、図８参照）の駆動によって、室内熱交換器１５に室内空気を送り込むファンであり、室内熱交換器１５の付近に設置されている。 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 sent from the indoor fan 16 (air in the air-conditioning target space). It is a vessel. The indoor fan 16 is a fan that sends indoor air into the indoor heat exchanger 15 by driving of the indoor fan motor 16m (drive device, see FIG. 8), and is installed in the vicinity of the indoor heat exchanger 15.
　四方弁１７は、空気調和機１００の運転モードに応じて、冷媒の流路を切り替える弁である。例えば、冷房運転時（図１の破線矢印を参照）には、圧縮機１１、室外熱交換器１２（凝縮器）、膨張弁１４、及び室内熱交換器１５（蒸発器）が、四方弁１７を介して環状に順次接続されてなる冷媒回路Ｑにおいて、冷凍サイクルで冷媒が循環する。 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 broken line 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 replaced with the four-way valve 17. In the refrigerant circuit Q that is sequentially connected in an annular manner through the refrigerant, the refrigerant circulates in the refrigeration cycle.
　一方、暖房運転時（図１の実線矢印を参照）には、圧縮機１１、室内熱交換器１５（凝縮器）、膨張弁１４、及び室外熱交換器１２（蒸発器）が、四方弁１７を介して環状に順次接続されてなる冷媒回路Ｑにおいて、冷凍サイクルで冷媒が循環する。 On the other hand, during the heating operation (see the solid line arrow in FIG. 1), the compressor 11, the indoor heat exchanger 15 (condenser), the expansion valve 14, and the outdoor heat exchanger 12 (evaporator) are replaced by the four-way valve 17. In the refrigerant circuit Q that is sequentially connected in an annular manner through the refrigerant, the refrigerant circulates in the refrigeration cycle.
　なお、図５に示す例では、圧縮機１１、室外熱交換器１２、室外ファン１３、膨張弁１４、及び四方弁１７が、室外機Ｕｏに設置されている。一方、室内熱交換器１５及び室内ファン１６は、室内機Ｕｉに設置されている。 In addition, in the example shown in FIG. 5, the compressor 11, the outdoor heat exchanger 12, the outdoor fan 13, the expansion valve 14, and the four-way valve 17 are installed in the outdoor unit Uo. On the other hand, the indoor heat exchanger 15 and the indoor fan 16 are installed in the indoor unit Ui.
　図６は、実施形態に係る空気調和機１００が備える室内機Ｕｉの一部を切り欠いた斜視図である。ファン清掃部２４は、図３に示す軸部２４ａ及びブラシ２４ｂの他に、ファン清掃用モータ２４ｍ（図８参照）を備えている。軸部２４ａは、室内ファン１６の軸方向に平行な棒状の部材であり、その両端が軸支されている。 FIG. 6 is a perspective view in which a part of the indoor unit Ui included in the air conditioner 100 according to the embodiment is cut away. The fan cleaning unit 24 includes a fan cleaning motor 24m (see FIG. 8) in addition to the shaft portion 24a and the brush 24b shown in FIG. The shaft portion 24a is a rod-like member parallel to the axial direction of the indoor fan 16, and both ends thereof are pivotally supported.
　ブラシ２４ｂは、ファンブレード１６ａに付着した塵埃を除去するものであり、軸部２４ａに設置されている。ファン清掃用モータ２４ｍ（図８参照）は、例えば、ステッピングモータであり、軸部２４ａを所定角度だけ回転（回動）させる機能を有している。 The brush 24b removes dust adhering to the fan blade 16a and is installed on the shaft portion 24a. The fan cleaning motor 24m (see FIG. 8) is, for example, a stepping motor, and has a function of rotating (turning) the shaft portion 24a by a predetermined angle.
　ファン清掃部２４によって室内ファン１６を清掃する際には、室内ファン１６にブラシ２４ｂが接触するように（図１０参照）、ファン清掃用モータ２４ｍ（図８参照）が駆動されるとともに、室内ファン１６が逆回転される。そして、ファン清掃部２４による室内ファン１６の清掃が終了すると、ファン清掃用モータ２４ｍが再び駆動されてブラシ２４ｂが回動し、室内ファン１６からブラシ２４ｂが離間した状態になる（図２参照）。 When the indoor fan 16 is cleaned by the fan cleaning unit 24, the fan cleaning motor 24m (see FIG. 8) is driven and the indoor fan so that the brush 24b contacts the indoor fan 16 (see FIG. 10). 16 is reversely rotated. When the cleaning of the indoor fan 16 by the fan cleaning unit 24 is completed, the fan cleaning motor 24m is driven again, the brush 24b is rotated, and the brush 24b is separated from the indoor fan 16 (see FIG. 2). .
　本実施形態では、室内ファン１６の清掃時以外では、図２に示すように、ブラシ２４ｂの先端が室内熱交換器１５に臨むようにしている。具体的には、室内ファン１６の清掃時以外（通常の空調運転中も含む）では、ブラシ２４ｂが横方向（略水平）に向いた状態で、室内ファン１６から離間している。このようにファン清掃部２４を配置する理由について、図７を用いて説明する。 In this embodiment, except when the indoor fan 16 is cleaned, the tip of the brush 24b faces the indoor heat exchanger 15 as shown in FIG. Specifically, except when the indoor fan 16 is being cleaned (including during normal air-conditioning operation), the brush 24b is spaced apart from the indoor fan 16 in a state of being directed in the horizontal direction (substantially horizontal). The reason why the fan cleaning unit 24 is arranged in this way will be described with reference to FIG.
　図７は、実施形態に係る空気調和機１００において、空調運転中におけるファン清掃部２４付近の空気の流れを示す説明図である。図７に示す各矢印の向きは、空気の流れる向きを示している。また、各矢印の長さは、空気の流れる速さを示している。 FIG. 7 is an explanatory diagram illustrating the flow of air in the vicinity of the fan cleaning unit 24 during the air conditioning operation in the air conditioner 100 according to the embodiment. The direction of each arrow shown in FIG. 7 indicates the direction in which air flows. The length of each arrow indicates the speed of air flow.
　通常の空調運転時、室内ファン１６は正回転し、前側室内熱交換器１５ａのフィンｆの隙間を通り抜けた空気が室内ファン１６に向かう。特に、前側室内熱交換器１５ａの凹部ｒ（図２参照）の付近では、図７に示すように、室内ファン１６に向かって横方向（略水平の方向）に空気が流れる。なお、ファン清掃部２４のブラシ２４ｂは、略水平方向に位置しているが、これに限定されるものではない。ブラシ２４ｂが長い場合、ブラシの方向を水平斜め下方向、すなわち、前側室内熱交換器１５ａに軽く接触する位置で止めてもよい。 During normal air-conditioning operation, the indoor fan 16 rotates forward, and the air passing through the gaps between the fins f of the front indoor heat exchanger 15a is directed to the indoor fan 16. In particular, in the vicinity of the recess r (see FIG. 2) of the front indoor heat exchanger 15a, air flows in the lateral direction (substantially horizontal direction) toward the indoor fan 16, as shown in FIG. In addition, although the brush 24b of the fan cleaning part 24 is located in the substantially horizontal direction, it is not limited to this. When the brush 24b is long, the direction of the brush may be stopped horizontally at a downward direction, that is, at a position where the brush 24b is slightly in contact with the front indoor heat exchanger 15a.
　この凹部ｒには、前記したように、ブラシ２４ｂが横方向に向いた状態で、ファン清掃部２４が配置されている。言い換えると、通常の空調運転時、ブラシ２４ｂの向きは空気の流れの方向に平行になっている。このように、ブラシ２４ｂの延在方向と、空気の流れる方向と、が略平行であるため、ファン清掃部２４が空気の流れの妨げになることはほとんどない。 As described above, the fan cleaning unit 24 is disposed in the recess r with the brush 24b facing in the lateral direction. In other words, during normal air conditioning operation, the direction of the brush 24b is parallel to the direction of air flow. Thus, since the extending direction of the brush 24b and the direction in which air flows are substantially parallel, the fan cleaning unit 24 hardly interferes with the air flow.
　また、室内ファン１６が正回転している場合の空気の流れの中流域・下流域（図２に示す空気吹出口ｈ４の付近）ではなく、上流域にファン清掃部２４が配置されている。そして、ブラシ２４ｂに沿って横方向に通流する空気が、ファンブレード１６ａによって加速され、加速された空気が空気吹出口ｈ４（図２参照）に向かうようになっている。このように、空気が比較的低速で流れる上流域にファン清掃部２４が配置されているため、ファン清掃部２４に起因する風量低下を抑制できる。なお、室内ファン１６が停止しているときにも、図７と同様の状態でファン清掃部２４が維持されてもよい。 Further, the fan cleaning unit 24 is arranged in the upstream area, not in the middle or downstream area (near the air outlet h4 shown in FIG. 2) of the air flow when the indoor fan 16 is rotating forward. The air flowing in the lateral direction along the brush 24b is accelerated by the fan blade 16a, and the accelerated air is directed to the air outlet h4 (see FIG. 2). Thus, since the fan cleaning part 24 is arrange | positioned in the upstream area where air flows at a comparatively low speed, the air volume fall resulting from the fan cleaning part 24 can be suppressed. Even when the indoor fan 16 is stopped, the fan cleaning unit 24 may be maintained in the same state as in FIG.
　図８は、実施形態に係る空気調和機１００の制御機能を示すブロック図である。図８に示す室内機Ｕｉは、前記したようにリモコン送受信部２７と、室内制御回路３１と、を備えている。リモコン送受信部２７は、リモコン４０との間で所定の情報をやり取りする。室内制御回路３１は、図示はしないが、ＣＰＵ（Central Processing Unit）、ＲＯＭ（Read Only Memory）、ＲＡＭ（Random Access Memory）、各種インタフェース等の電子回路を含んで構成されている。そして、ＲＯＭに記憶されたプログラムを読み出してＲＡＭに展開し、ＣＰＵが各種処理を実行するようになっている。 FIG. 8 is a block diagram illustrating a control function of the air conditioner 100 according to the embodiment. The indoor unit Ui illustrated in FIG. 8 includes the remote control transmission / reception unit 27 and the indoor control circuit 31 as described above. The remote controller transmission / reception unit 27 exchanges predetermined information with the remote controller 40. Although not shown, the indoor control circuit 31 includes electronic circuits such as a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and various interfaces. Then, the program stored in the ROM is read out and expanded in the RAM, and the CPU executes various processes.
　図８に示すように、室内制御回路３１は、記憶部３１ａと、室内制御部３１ｂと、を備えている。記憶部３１ａには、所定のプログラムの他、リモコン送受信部２７を介して受信したデータや、各種センサ（図示せず）の検出値等が記憶される。 As shown in FIG. 8, the indoor control circuit 31 includes a storage unit 31a and an indoor control unit 31b. In addition to a predetermined program, the storage unit 31a stores data received via the remote control transmission / reception unit 27, detection values of various sensors (not shown), and the like.
　室内制御部３１ｂは、記憶部３１ａに記憶されたデータに基づいて、ファン清掃用モータ２４ｍ、室内ファンモータ１６ｍ、左右風向板用モータ２５、上下風向板用モータ２６等を実行する。室内制御部３１ｂは、前記モータ等の実行機能のほか、ファン清掃部２４を室内ファン１６に接触させる機能を有する。 The indoor control unit 31b executes the fan cleaning motor 24m, the indoor fan motor 16m, the left and right air direction plate motor 25, the up and down air direction plate motor 26, and the like based on the data stored in the storage unit 31a. The indoor control unit 31b has a function of bringing the fan cleaning unit 24 into contact with the indoor fan 16 in addition to the execution function of the motor and the like.
　記憶部３１ａには、空気調和機１００の運転回数と運転積算時間が記憶されている。室内制御部３１ｂは、運転回数、又は／及び、前記運転積算時間に基づいて、ファン清掃モードを実行する。 The storage unit 31a stores the number of operations of the air conditioner 100 and the operation integration time. The indoor control unit 31b executes the fan cleaning mode based on the number of operations or / and the accumulated operation time.
　室外機Ｕｏは、前記した構成の他に、室外制御回路３２を備えている。室外制御回路３２は、図示はしないが、ＣＰＵ、ＲＯＭ、ＲＡＭ、各種インタフェース等の電子回路を含んで構成され、通信線を介して室内制御回路３１に接続されている。図８に示すように、室外制御回路３２は、記憶部３２ａと、室外制御部３２ｂと、を備えている。 The outdoor unit Uo includes an outdoor control circuit 32 in addition to the configuration described above. Although not illustrated, the outdoor control circuit 32 includes electronic circuits such as a CPU, a ROM, a RAM, and various interfaces, and is connected to the indoor control circuit 31 via a communication line. As shown in FIG. 8, the outdoor control circuit 32 includes a storage unit 32a and an outdoor control unit 32b.
　記憶部３２ａには、所定のプログラムの他、室内制御回路３１から受信したデータ等が記憶される。室外制御部３２ｂは、記憶部３２ａに記憶されたデータに基づいて、圧縮機モータ１１ａ、室外ファンモータ１３ａ、膨張弁１４等を制御する。以下では、室内制御回路３１及び室外制御回路３２を一括して「制御部３０」という。 The storage unit 32a stores data received from the indoor control circuit 31 in addition to 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. Hereinafter, the indoor control circuit 31 and the outdoor control circuit 32 are collectively referred to as a “control unit 30”.
　図９は、実施形態に係る空気調和機１００の制御部３０が実行する制御処理のフローチャートである（適宜、図２を参照）。ここでは、ステップＳ１０１で暖房運転を停止した状態であり、また、ブラシ２４ｂの先端が前側室内熱交換器１５ａに臨んだ状態（図２に示す状態）であるものとする。 FIG. 9 is a flowchart of control processing executed by the control unit 30 of the air conditioner 100 according to the embodiment (see FIG. 2 as appropriate). Here, it is assumed that the heating operation is stopped in step S101, and that the tip of the brush 24b faces the front indoor heat exchanger 15a (the state shown in FIG. 2).
　ステップＳ１０２において、制御部３０は、室内ファン１６を第１の所定時間送風運転を行う。この第１の所定時間内に、室内機Ｕｉの熱気を外に逃がすとともに、加熱されているブラシ２４ｂを冷ますことができる。 In step S102, the control unit 30 performs the air blowing operation for the indoor fan 16 for a first predetermined time. Within this first predetermined time, the hot air from the indoor unit Ui can escape and the heated brush 24b can be cooled.
　ステップＳ１０３において、第１の所定時間経過後、ファン清掃部２４によって、室内ファン１６を清掃する。室内ファン１６の清掃中の状態を、図１０を参照して説明する。 In step S103, after the first predetermined time has elapsed, the fan cleaning unit 24 cleans the indoor fan 16. A state during cleaning of the indoor fan 16 will be described with reference to FIG.
　図１０は、実施形態に係る空気調和機１００において、室内ファン１６の清掃中の状態を示す説明図である。なお、図１０では、室内熱交換器１５、室内ファン１６、及び露受皿１８を図示し、他の部材については図示を省略している。 FIG. 10 is an explanatory diagram illustrating a state in which the indoor fan 16 is being cleaned in the air conditioner 100 according to the embodiment. In addition, in FIG. 10, the indoor heat exchanger 15, the indoor fan 16, and the dew tray 18 are illustrated, and illustration is abbreviate | omitted about other members.
　制御部３０は、通常の空調運転時とは逆向きに室内ファン１６を回転(逆回転)させ、室内ファン１６が設定回転速度Ｒｃに達したら、ファン清掃部２４のブラシ２４ｂを室内ファン１６に接触させる。 The control unit 30 rotates (reversely rotates) the indoor fan 16 in the opposite direction to that during normal air-conditioning operation. When the indoor fan 16 reaches the set rotation speed Rc, the brush 24b of the fan cleaning unit 24 is moved to the indoor fan 16. Make contact.
　つまり、制御部３０は、ブラシ２４ｂの先端が室内熱交換器１５に臨んだ状態（図２参照）から、軸部２４ａを中心にブラシ２４ｂを約１８０°回動させ、ブラシ２４ｂの先端が室内ファン１６に臨むようにする（図１０参照）。これによって、室内ファン１６のファンブレード１６ａにブラシ２４ｂが接触する。 That is, the control unit 30 rotates the brush 24b about 180 ° around the shaft portion 24a from the state where the tip of the brush 24b faces the indoor heat exchanger 15 (see FIG. 2), and the tip of the brush 24b is placed indoors. It faces the fan 16 (see FIG. 10). As a result, the brush 24 b comes into contact with the fan blade 16 a of the indoor fan 16.
　なお、図１０の例では、一点鎖線Ｌで示すように、ファン清掃部２４が室内ファン１６に接触した状態での接触位置Ｋの下方に、室内熱交換器１５（前側室内熱交換器１５ａ）が存在するとともに、露受皿１８も存在している。 In the example of FIG. 10, as indicated by the alternate long and short dash line L, the indoor heat exchanger 15 (the front indoor heat exchanger 15 a) is located below the contact position K when the fan cleaning unit 24 is in contact with the indoor fan 16. And a dew pan 18 are also present.
　前記したように、室内ファン１６は逆回転しているため、ファンブレード１６ａの移動に伴ってブラシ２４ｂの先端がたわみ、ファンブレード１６ａの背面をなでるようにブラシ２４ｂが押し付けられる。そして、ファンブレード１６ａの先端付近（径方向の端部）に溜まった塵埃が、ブラシ２４ｂによって除去される。 As described above, since the indoor fan 16 rotates in the reverse direction, the tip of the brush 24b bends as the fan blade 16a moves, and the brush 24b is pressed so as to stroke the back of the fan blade 16a. The dust collected near the tip of the fan blade 16a (the end in the radial direction) is removed by the brush 24b.
　特に、ファンブレード１６ａの先端付近には塵埃が溜まりやすい。なぜなら、室内ファン１６が正回転している空調運転中（図４参照）、ファンブレード１６ａの腹の先端付近に空気が当たり、この先端付近に塵埃が付着するからである。ファンブレード１６ａの先端付近に当たった空気は、ファンブレード１６ａの腹の曲面に沿うようにして、隣り合うファンブレード１６ａ，１６ａの間の隙間を通り抜ける。 Especially, dust tends to accumulate near the tip of the fan blade 16a. This is because during the air-conditioning operation in which the indoor fan 16 is rotating forward (see FIG. 4), air hits the vicinity of the tip of the belly of the fan blade 16a, and dust adheres to the vicinity of the tip. The air hitting the vicinity of the tip of the fan blade 16a passes through the gap between the adjacent fan blades 16a, 16a so as to follow the curved surface of the fan blade 16a.
　本実施形態では、前記したように、室内ファン１６を逆回転させて、室内ファン１６が設定回転速度Ｒｃに達したら、ファンブレード１６ａにファン清掃部２４を接触させる。これによって、ファンブレード１６ａの背面の先端付近にブラシ２４ｂが接触し、ファンブレード１６ａの背面の先端付近に溜まった塵埃が除去される。その結果、室内ファン１６に溜まった塵埃の大部分を除去できる。 In this embodiment, as described above, the indoor fan 16 is rotated in the reverse direction, and when the indoor fan 16 reaches the set rotational speed Rc, the fan cleaning unit 24 is brought into contact with the fan blade 16a. As a result, the brush 24b comes into contact with the vicinity of the front end of the fan blade 16a, and dust accumulated near the front end of the fan blade 16a is removed. As a result, most of the dust accumulated in the indoor fan 16 can be removed.
　また、室内ファン１６を逆回転させることによって、室内機Ｕｉ（図２参照）の内部で、正回転時（図４参照）とは逆向きの緩やかな空気の流れが生じる。したがって、室内ファン１６から除去された塵埃ｊが空気吹出口ｈ４（図２参照）には向かわず、図１０に示すように、前側室内熱交換器１５ａと室内ファン１６との間の隙間を介して、露受皿１８に導かれる。 Further, by rotating the indoor fan 16 in the reverse direction, a gentle air flow is generated inside the indoor unit Ui (see FIG. 2) in the direction opposite to the normal rotation (see FIG. 4). Therefore, the dust j removed from the indoor fan 16 does not go to the air outlet h4 (refer to FIG. 2), but passes through a gap between the front indoor heat exchanger 15a and the indoor fan 16, as shown in FIG. Then, it is guided to the dew tray 18.
　より詳しく説明すると、ブラシ２４ｂによって室内ファン１６から除去された塵埃ｊが、風圧で前側室内熱交換器１５ａに軽く押し付けられる。さらに、前記した塵埃ｊは、前側室内熱交換器１５ａの傾斜面（フィンｆの縁）に沿って、露受皿１８に落下する（図１０の矢印を参照）。したがって、室内ファン１６と露受皿１８との間の微少な隙間を介して、上下風向板２３（図２参照）の裏面に塵埃ｊが付着することは、ほとんどない。これによって、次回の空調運転中に塵埃ｊが室内に吹き出されることを防止できる。 More specifically, the dust j removed from the indoor fan 16 by the brush 24b is lightly pressed against the front indoor heat exchanger 15a by wind pressure. Further, the dust j described above falls on the dew receiving tray 18 along the inclined surface (edge of the fin f) of the front indoor heat exchanger 15a (see the arrow in FIG. 10). Therefore, the dust j hardly adheres to the back surface of the up-and-down wind direction plate 23 (see FIG. 2) through a minute gap between the indoor fan 16 and the dew tray 18. This can prevent the dust j from being blown into the room during the next air conditioning operation.
　なお、室内ファン１６から除去された塵埃ｊの一部が、露受皿１８に落下せずに、前側室内熱交換器１５ａに付着する可能性もある。このように前側室内熱交換器１５ａに付着した塵埃ｊは、後記するステップＳ１０５の処理で洗い流される。 Note that a part of the dust j removed from the indoor fan 16 may adhere to the front indoor heat exchanger 15a without falling to the dew tray 18. Thus, the dust j adhering to the front indoor heat exchanger 15a is washed away in the process of step S105 described later.
　また、室内ファン１６の清掃中、制御部３０は、室内ファン１６を中・高速域の回転速度で駆動してもよいし、また、室内ファン１６を低速域の回転速度で駆動してもよい。 Further, during the cleaning of the indoor fan 16, the control unit 30 may drive the indoor fan 16 at a medium / high speed rotation speed or drive the indoor fan 16 at a low speed rotation speed. .
　室内ファン１６の中・高速域の回転速度の範囲は、例えば、３００ｍｉｎ－１（３００ｒｐｍ）以上かつ１７００ｍｉｎ－１（１７００ｒｐｍ）未満である。このように中・高速域で室内ファン１６を回転させることによって、前側室内熱交換器１５ａの方に塵埃ｊが向かいやすくなるため、前記したように、上下風向板２３（図２参照）の裏面に塵埃ｊが付着しにくくなる。したがって、次回の空調運転中に塵埃ｊが室内に吹き出されることを防止できる。 The range of the rotational speed in the middle and high speed range of the indoor fan 16 is, for example, not less than 300 min −1 (300 rpm) and less than 1700 min −1 (1700 rpm). By rotating the indoor fan 16 in the middle / high speed range in this manner, the dust j is easily directed toward the front indoor heat exchanger 15a. Therefore, as described above, the back surface of the vertical wind direction plate 23 (see FIG. 2). It becomes difficult for dust j to adhere to the surface. Therefore, it is possible to prevent the dust j from being blown into the room during the next air conditioning operation.
　また、室内ファン１６の低速域の回転速度の範囲は、例えば、１００ｍｉｎ－１（１００ｒｐｍ）以上かつ３００ｍｉｎ－１（３００ｒｐｍ）未満である。このように低速域で室内ファン１６を回転させることによって、室内ファン１６の清掃を低騒音で行うことができる。 The range of the rotational speed in the low speed region of the indoor fan 16 is, for example, not less than 100 min −1 (100 rpm) and less than 300 min −1 (300 rpm). Thus, by rotating the indoor fan 16 in the low speed region, the indoor fan 16 can be cleaned with low noise.
　図９のステップＳ１０３の処理が終わった後、ステップＳ１０４において制御部３０は、ファン清掃部２４を移動させる。すなわち、制御部３０は、ブラシ２４ｂの先端が室内ファン１６に臨んだ状態（図１０参照）から、軸部２４ａを中心にブラシ２４ｂを約１８０°回動させ、ブラシ２４ｂの先端が室内熱交換器１５に臨むようにする（図１１参照）。これによって、その後の空調運転中、ファン清掃部２４が空気の流れの妨げになることを防止できる。 After the process of step S103 of FIG. 9 is completed, the control unit 30 moves the fan cleaning unit 24 in step S104. That is, the control unit 30 rotates the brush 24b about 180 ° around the shaft portion 24a from the state where the tip of the brush 24b faces the indoor fan 16 (see FIG. 10), and the tip of the brush 24b exchanges heat in the room. It faces the container 15 (see FIG. 11). Thereby, it is possible to prevent the fan cleaning unit 24 from obstructing the air flow during the subsequent air conditioning operation.
　次に、ステップＳ１０５において制御部３０は、室内熱交換器１５の凍結・解凍を順次に行う。まず、制御部３０は、室内熱交換器１５を蒸発器として機能させ、室内機Ｕｉに取り込まれた空気に含まれる水分を室内熱交換器１５に着霜させて凍結させる。なお、室内熱交換器１５を凍結させる処理は、室内熱交換器１５に「凝縮水を付着させる」という事項に含まれる。 Next, in step S105, the control unit 30 sequentially freezes and thaws the indoor heat exchanger 15. First, the control unit 30 causes the indoor heat exchanger 15 to function as an evaporator, causes the indoor heat exchanger 15 to frost and freeze moisture contained in the air taken into the indoor unit Ui. The process of freezing the indoor heat exchanger 15 is included in the matter of “attaching condensed water” to the indoor heat exchanger 15.
　室内熱交換器１５を凍結させているとき、制御部３０は、室内熱交換器１５に流入する冷媒の蒸発温度を低くすることが好ましい。すなわち、制御部３０は、室内熱交換器１５を蒸発器として機能させ、この室内熱交換器１５を凍結（凝縮水を付着）させているとき、通常の空調運転時よりも冷媒の蒸発温度が低くなるように、室内熱交換器１５に流入する冷媒の温度を調整する。 When the indoor heat exchanger 15 is frozen, the control unit 30 preferably lowers the evaporation temperature of the refrigerant flowing into the indoor heat exchanger 15. That is, the control unit 30 causes the indoor heat exchanger 15 to function as an evaporator, and when the indoor heat exchanger 15 is frozen (condensed water is attached), the evaporation temperature of the refrigerant is higher than during normal air conditioning operation. The temperature of the refrigerant flowing into the indoor heat exchanger 15 is adjusted so as to be low.
　例えば、制御部３０は、膨張弁１４（図１参照）の開度を小さくすることによって、低圧で蒸発温度が低い冷媒を室内熱交換器１５に流入させる。これによって、室内熱交換器１５で霜や氷（図１１に示す符号ｉ）が成長しやすくなるため、その後の解凍中、室内熱交換器１５を多量の水で洗い流すことができる。 For example, the control unit 30 causes the refrigerant having a low pressure and a low evaporation temperature to flow into the indoor heat exchanger 15 by reducing the opening of the expansion valve 14 (see FIG. 1). This makes it easier for frost and ice (symbol i shown in FIG. 11) to grow in the indoor heat exchanger 15, so that the indoor heat exchanger 15 can be washed away with a large amount of water during the subsequent thawing.
　また、室内熱交換器１５において、ファン清掃部２４の下方に位置する領域は、室内熱交換器１５を通流する冷媒の流れの下流域ではない（つまり、上流域又は中流域である）ことが好ましい。これによって、少なくともファン清掃部２４の下方（下側）には、低温の気液二相冷媒が流れるため、室内熱交換器１５に付着する霜や氷の厚さを厚くすることができる。したがって、その後の解凍中、室内熱交換器１５を多量の水で洗い流すことができる。 Moreover, in the indoor heat exchanger 15, the area | region located under the fan cleaning part 24 is not a downstream area of the flow of the refrigerant | coolant which flows through the indoor heat exchanger 15 (that is, it is an upstream area or a midstream area). Is preferred. Thereby, since the low-temperature gas-liquid two-phase refrigerant flows at least below (lower side) the fan cleaning unit 24, the thickness of frost and ice adhering to the indoor heat exchanger 15 can be increased. Therefore, the indoor heat exchanger 15 can be washed away with a large amount of water during the subsequent thawing.
　なお、室内熱交換器１５においてファン清掃部２４の下方に位置する領域は、ファン清掃部２４によって室内ファン１６から掻き落とされた塵埃が付着しやすい。そこで、室内熱交換器１５においてファン清掃部２４の下方に位置する領域に低温の気液二相冷媒を流すことで、霜や氷が成長しやすくなり、さらに、これらの霜や氷を溶かすことで室内熱交換器１５の塵埃を適切に洗い流すことができる。 In the indoor heat exchanger 15, an area located below the fan cleaning unit 24 is likely to be attached with dust scraped off from the indoor fan 16 by the fan cleaning unit 24. Therefore, by flowing a low-temperature gas-liquid two-phase refrigerant in a region located below the fan cleaning unit 24 in the indoor heat exchanger 15, it becomes easy for frost and ice to grow, and further to melt these frost and ice. Thus, the dust in the indoor heat exchanger 15 can be washed away appropriately.
　また、室内熱交換器１５を蒸発器として機能させ、この室内熱交換器１５を凍結（凝縮水を付着）させているとき、制御部３０は、上下風向板２３（図２参照）を閉じるか、又は、上下風向板２３の角度を水平よりも上向きにすることが好ましい。これによって、室内熱交換器１５で冷やされた低温の空気が室内に漏れ出ることを抑制し、ユーザにとって快適な状態で室内熱交換器１５の凍結等を行うことができる。 In addition, when the indoor heat exchanger 15 functions as an evaporator and the indoor heat exchanger 15 is frozen (condensed water is attached), the control unit 30 may close the up-and-down air direction plate 23 (see FIG. 2). Alternatively, it is preferable that the angle of the up-and-down wind direction plate 23 is upward from the horizontal. Thereby, it is possible to suppress the low-temperature air cooled by the indoor heat exchanger 15 from leaking into the room, and to freeze the indoor heat exchanger 15 in a comfortable state for the user.
　このようにして室内熱交換器１５を凍結させた後、制御部３０は、室内熱交換器１５を解凍する（図９のステップＳ１０５）。例えば、制御部３０は、各機器の停止状態を維持することで、室内熱交換器１５を室温で自然解凍させる。なお、制御部３０が送風運転を行うことによって、室内熱交換器１５に付着した霜や氷を溶かすようにしてもよい。室内熱交換器１５の解凍中の状態を、図１１を参照して説明する。 After freezing the indoor heat exchanger 15 in this way, the control unit 30 defrosts the indoor heat exchanger 15 (step S105 in FIG. 9). For example, the control unit 30 naturally defrosts the indoor heat exchanger 15 at room temperature by maintaining the stopped state of each device. In addition, you may make it melt the frost and ice adhering to the indoor heat exchanger 15 by the control part 30 performing ventilation operation. A state in which the indoor heat exchanger 15 is being thawed will be described with reference to FIG.
　図１１は、実施形態に係る空気調和機１００において、室内熱交換器１５の解凍中の状態を示す説明図である。室内熱交換器１５が解凍されることで、室内熱交換器１５に付着した霜や氷が溶け、フィンｆを伝って露受皿１８に多量の水ｗが流れ落ちる。これによって、空調運転中に室内熱交換器１５に付着した塵埃ｊを洗い流すことができる。 FIG. 11 is an explanatory diagram showing a state in which the indoor heat exchanger 15 is being thawed in the air conditioner 100 according to the embodiment. As the indoor heat exchanger 15 is thawed, frost and ice adhering to the indoor heat exchanger 15 are melted, and a large amount of water w flows to the dew tray 18 through the fins f. Thereby, the dust j adhering to the indoor heat exchanger 15 during the air conditioning operation can be washed away.
　また、ブラシ２４ｂによる室内ファン１６の清掃に伴って、前側室内熱交換器１５ａに付着した塵埃ｊも一緒に洗い流され、露受皿１８に流れ落ちる（図１１の矢印を参照）。このようにして露受皿１８に流れ落ちた水ｗは、室内ファン１６の清掃中に露受皿１８に直接的に落下した塵埃ｊ（図１０参照）とともに、ドレンホース（図示せず）を介して外部に排出される。前記したように、解凍中に室内熱交換器１５から多量の水が流れ落ちる、ドレンホース等（図示せず）が塵埃ｊで詰まるおそれはほとんどない。 Also, along with the cleaning of the indoor fan 16 by the brush 24b, the dust j adhering to the front indoor heat exchanger 15a is also washed away and flows down to the dew tray 18 (see the arrow in FIG. 11). The water w that has flown down to the dew tray 18 in this way is externally connected via a drain hose (not shown) together with dust j (see FIG. 10) that has dropped directly to the dew tray 18 during cleaning of the indoor fan 16. To be discharged. As described above, there is almost no possibility that a large amount of water flows down from the indoor heat exchanger 15 during thawing and a drain hose (not shown) is clogged with dust j.
　なお、図９では省略しているが、室内熱交換器１５の凍結・解凍（ステップＳ１０５）を行った後、制御部３０が送風運転を行うことで、室内機Ｕｉの内部を乾燥させてもよい。これによって、室内熱交換器１５等に菌が繁殖することを抑制できる。 Although omitted in FIG. 9, after the indoor heat exchanger 15 is frozen and thawed (step S <b> 105), the controller 30 performs a blowing operation so that the interior of the indoor unit Ui can be dried. Good. Thereby, it is possible to suppress the propagation of bacteria in the indoor heat exchanger 15 and the like.
≪変形例≫
　以上、本発明に係る空気調和機１００について実施形態で説明したが、本発明はこれらの記載に限定されるものではなく、種々の変更を行うことができる。 ≪Modification≫
The air conditioner 100 according to the present invention has been described in the above embodiments, but the present invention is not limited to these descriptions, and various modifications can be made.
　図１２は、別の変形例に係る空気調和機が備える室内ファン１６及びファン清掃部２４Ａを示す模式的な斜視図である。図１２に示す変形例では、ファン清掃部２４Ａが、室内ファン１６の軸方向に平行な棒状の軸部２４ｄと、この軸部２４ｄに設置されるブラシ２４ｅと、軸部２４ｄの両端に設置される一対の支持部２４ｆ，２４ｆと、を備えている。その他、ファン清掃部２４Ａは、図示はしないが、ファン清掃部２４Ａを軸方向等に移動させる移動機構も備えている。 FIG. 12 is a schematic perspective view showing an indoor fan 16 and a fan cleaning unit 24A provided in an air conditioner according to another modification. In the modification shown in FIG. 12, the fan cleaning unit 24A is installed on a rod-shaped shaft part 24d parallel to the axial direction of the indoor fan 16, a brush 24e installed on the shaft part 24d, and both ends of the shaft part 24d. A pair of support portions 24f, 24f. In addition, although not shown, the fan cleaning unit 24A includes a moving mechanism that moves the fan cleaning unit 24A in the axial direction or the like.
　図１２に示すように、室内ファン１６の軸方向と平行な方向におけるファン清掃部２４Ａの長さは、室内ファン１６自体の軸方向の長さよりも短い。そして、室内ファン１６の清掃中、ファン清掃部２４Ａが、室内ファン１６の軸方向（室内機Ｕｉの正面から見て左右方向）に移動するようになっている。つまり、室内ファン１６の軸方向において、ファン清掃部２４Ａの長さに相当する所定領域ごとに、室内ファン１６が順次に清掃されるようになっている。このように、その長さが比較的短いファン清掃部２４Ａを移動させる構成にすることで、図６に示す構成に比べて、空気調和機の製造コストを削減できる。 12, the length of the fan cleaning section 24A in the direction parallel to the axial direction of the indoor fan 16 is shorter than the axial length of the indoor fan 16 itself. During the cleaning of the indoor fan 16, the fan cleaning unit 24A moves in the axial direction of the indoor fan 16 (left and right as viewed from the front of the indoor unit Ui). That is, in the axial direction of the indoor fan 16, the indoor fan 16 is sequentially cleaned for each predetermined area corresponding to the length of the fan cleaning unit 24A. Thus, the manufacturing cost of an air conditioner can be reduced by making it the structure which moves the fan cleaning part 24A whose length is comparatively short compared with the structure shown in FIG.
　なお、軸部２４ｄと平行に延びる棒（図示せず）をファン清掃部２４Ａの付近（例えば、軸部２４ｄの上側）に設け、所定の移動機構（図示せず）が、この棒に沿ってファン清掃部２４Ａを移動させるようにしてもよい。また、ファン清掃部２４Ａによる清掃後、移動機構（図示せず）がファン清掃部２４Ａを適宜に回動又は平行移動させ、ファン清掃部２４Ａを室内ファン１６から退避させるようにしてもよい。 A rod (not shown) extending in parallel with the shaft portion 24d is provided in the vicinity of the fan cleaning portion 24A (for example, above the shaft portion 24d), and a predetermined moving mechanism (not shown) is provided along the rod. The fan cleaning unit 24A may be moved. Further, after the cleaning by the fan cleaning unit 24A, a moving mechanism (not shown) may appropriately rotate or translate the fan cleaning unit 24A so that the fan cleaning unit 24A is retracted from the indoor fan 16.
　また、実施形態では、制御部３０が、ファン清掃部２４を室内ファン１６に接触させ、通常の空調運転時とは逆向きに室内ファン１６を回転（逆回転）させる処理について説明したが、これに限らない。すなわち、制御部３０が、ファン清掃部２４を室内ファン１６に接触させ、通常の空調運転時と同一の向きに室内ファン１６を回転（正回転）させるようにしてもよい。 Moreover, although the control part 30 contacted the fan cleaning part 24 with the indoor fan 16, and demonstrated the process which rotates the indoor fan 16 in the reverse direction at the time of normal air-conditioning driving | operation in this embodiment, Not limited to. That is, the control unit 30 may bring the fan cleaning unit 24 into contact with the indoor fan 16 and rotate the indoor fan 16 in the same direction as during normal air-conditioning operation (forward rotation).
　このように室内ファン１６にブラシ２４ｂを接触させて、室内ファン１６を正回転させることで、ファンブレード１６ａの腹の先端付近に付着した塵埃が効果的に除去される。また、室内ファン１６を逆回転させるための回路素子が不要になるため、空気調和機１００の製造コストを削減できる。なお、清掃中に室内ファン１６を正回転させる際の回転速度は、実施形態と同様に、低速域・中速域・高速域のうちのいずれであってもよい。 As described above, the brush 24b is brought into contact with the indoor fan 16 and the indoor fan 16 is rotated in the forward direction, so that dust adhering to the vicinity of the tip of the fan blade 16a is effectively removed. Moreover, since the circuit element for reversely rotating the indoor fan 16 becomes unnecessary, the manufacturing cost of the air conditioner 100 can be reduced. Note that the rotational speed when the indoor fan 16 is normally rotated during cleaning may be any of a low speed region, a medium speed region, and a high speed region, as in the embodiment.
　また、実施形態では、ファン清掃部２４の軸部２４ａを中心にブラシ２４ｂが回動する構成について説明したが、これに限らない。例えば、室内ファン１６を清掃する際には、制御部３０が、軸部２４ａを室内ファン１６の方に移動させ、ブラシ２４ｂを室内ファン１６に接触させるようにしてもよい。そして、室内ファン１６の清掃終了後は、制御部３０が、軸部２４ａを退避させ、ブラシ２４ｂを室内ファン１６から離間させるようにしてもよい。 In the embodiment, 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 thereto. For example, when cleaning the indoor fan 16, the control unit 30 may move the shaft portion 24 a toward the indoor fan 16 and bring the brush 24 b into contact with the indoor fan 16. Then, after the cleaning of the indoor fan 16 is completed, the control unit 30 may retract the shaft portion 24 a and separate the brush 24 b from the indoor fan 16.
　また、実施形態では、ファン清掃部２４がブラシ２４ｂを備える構成について説明したが、これに限らない。すなわち、室内ファン１６を清掃可能な部材であれば、スポンジ等を用いてもよい。 In the embodiment, the configuration in which the fan cleaning unit 24 includes the brush 24b has been described. However, the configuration is not limited thereto. That is, a sponge or the like may be used as long as the indoor fan 16 can be cleaned.
　また、実施形態では、室内ファン１６の清掃中、制御部３０が、ファン清掃部２４のブラシ２４ｂを室内ファン１６に接触させる構成について説明したが、これに限らない。すなわち、室内ファン１６の清掃中、制御部３０が、ファン清掃部２４のブラシ２４ｂを室内ファン１６に近接させるようにしてもよい。より詳しく説明すると、ファンブレード１６ａの先端に溜まって、この先端よりも径方向外側まで成長した塵埃を除去できる程度まで、制御部３０が室内ファン１６にブラシ２４ｂを近接させる。このような構成でも、室内ファン１６に溜まった塵埃を適切に除去できる。 Further, in the embodiment, the configuration in which the control unit 30 contacts the brush 24b of the fan cleaning unit 24 with the indoor fan 16 during cleaning of the indoor fan 16 is not limited thereto. That is, during cleaning of the indoor fan 16, the control unit 30 may bring the brush 24 b of the fan cleaning unit 24 close to the indoor fan 16. More specifically, the control unit 30 brings the brush 24b close to the indoor fan 16 to such an extent that dust accumulated at the tip of the fan blade 16a and growing to the outside in the radial direction from the tip can be removed. Even with such a configuration, dust accumulated in the indoor fan 16 can be appropriately removed.
　また、各実施形態は本発明を分かりやすく説明するために詳細に記載したものであり、必ずしも説明した全ての構成を備えるものに限定されない。また、各実施形態の構成の一部について、他の構成の追加・削除・置換をすることが可能である。また、前記した機構や構成は説明上必要と考えられるものを示しており、製品上必ずしも全ての機構や構成を示しているとは限らない。 Each embodiment is described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment. In addition, the above-described mechanisms and configurations are those that are considered necessary for the description, and do not necessarily indicate all the mechanisms and configurations on the product.
　１００　空気調和機
　１１　　圧縮機
　１１ａ　圧縮機モータ
　１２　　室外熱交換器
　１３　　室外ファン
　１３ａ　室外ファンモータ
　１４　　膨張弁
　１５　　室内熱交換器（熱交換器）
　１５ａ　前側室内熱交換器（熱交換器）
　１５ｂ　後側室内熱交換器（熱交換器）
　１６　　室内ファン（送風ファン）
　１６ｍ　　室内ファンモータ（駆動装置）
　１７　　四方弁
　１８　　露受皿
　２２　　左右風向板
　２３　　上下風向板
　２４　　ファン清掃部
　２４ａ　軸部
　２４ｂ　ブラシ
　２４ｍ　ファン清掃用モータ
　２８　　撮像部
　２９　　塵埃受け部
　３０　　制御部
　３１　　室内制御回路
　３１ａ　記憶部
　３１ｂ　室内制御部
　３２　　室外制御回路
　３２ａ　記憶部
　３２ｂ　室外制御部
　４０　　リモコン（空調制御端末）
　５０　　表示ランプ
　Ｋ　　接触位置
　Ｑ　　　冷媒回路
　ｒ　　　凹部
　Ｕｉ　　室内機
　Ｕｏ　　室外機 DESCRIPTION OF SYMBOLS 100 Air conditioner 11 Compressor 11a Compressor motor 12 Outdoor heat exchanger 13 Outdoor fan 13a Outdoor fan motor 14 Expansion valve 15 Indoor heat exchanger (heat exchanger)
15a Front side indoor heat exchanger (heat exchanger)
15b Rear indoor heat exchanger (heat exchanger)
16 Indoor fan (fan)
16m indoor fan motor (drive device)
17 Four-way valve 18 Dew tray 22 Left and right wind direction plate 23 Vertical wind direction plate 24 Fan cleaning part 24a Shaft part 24b Brush 24m Fan cleaning motor 28 Imaging part 29 Dust receiving part 30 Control part 31 Indoor control circuit 31a Storage part 31b Indoor control part 32 Outdoor control circuit 32a Storage unit 32b Outdoor control unit 40 Remote control (air conditioning control terminal)
50 Indicator lamp K Contact position Q Refrigerant circuit r Recessed part Ui Indoor unit Uo Outdoor unit

Claims (7)

  1. 　室内熱交換器と、
    　前記室内熱交換器に空気を送り込む送風ファンと、
    　前記送風ファンを清掃するファン清掃部と、
    　前記ファン清掃部を制御する制御部と、を備え、
    　前記制御部は、暖房運転終了後に、前記ファン清掃部によって前記送風ファンを清掃する場合には、暖房運転終了後、当該暖房運転の停止時から第１の所定時間が経過した後に、前記ファン清掃部による前記送風ファンの清掃を実行する空気調和機。     An indoor heat exchanger,
    A blower fan for sending air to the indoor heat exchanger;
    A fan cleaning section for cleaning the blower fan;
    A control unit for controlling the fan cleaning unit,
    When the fan cleaning unit cleans the blower fan after the heating operation is completed, the control unit performs the fan cleaning after the first predetermined time has elapsed since the heating operation was stopped after the heating operation was completed. The air conditioner which performs the cleaning of the said ventilation fan by a part.
  2. 　吹き出される空気の風向を変える上下風向板を備え、
    　前記制御部は、暖房運転の停止時から前記第１の所定時間が経過するまでの間、前記上下風向板を室内空間に対し上方向又は水平方向に向けて、前記送風ファンを駆動し、
    　前記第１の所定時間が経過した後に、前記上下風向板を室内空間に対し上方向又は水平方向に向けた状態を維持するか、又は、前記上下風向板を閉じる
    　ことを特徴とする請求項１に記載の空気調和機。     Equipped with up and down wind direction plates that change the direction of the blown air,
    The control unit drives the blower fan with the up-and-down wind direction plate directed upward or horizontally with respect to the indoor space until the first predetermined time elapses after the heating operation is stopped,
    The state in which the up-and-down wind direction plate is directed upward or horizontally with respect to the indoor space after the first predetermined time has elapsed, or the up-and-down wind direction plate is closed. Air conditioner as described in.
  3. 　運転状態を表示する１以上の表示ランプを備え、
    　前記制御部は、暖房運転の停止時から前記第１の所定時間が経過するまでの間、前記ファン清掃部による前記送風ファンの清掃中に点灯するのと同じ前記表示ランプを点灯する
    　ことを特徴とする請求項１に記載の空気調和機。     It has one or more indicator lamps that display the operating status,
    The control unit turns on the same display lamp that is turned on during the cleaning of the blower fan by the fan cleaning unit from when the heating operation is stopped until the first predetermined time elapses. The air conditioner according to claim 1.
  4. 　前記室内熱交換器の空気吸込側に設置されたフィルタの清掃を行うフィルタ清掃部を備え、
    　前記制御部は、暖房運転の停止時から前記第１の所定時間が経過するまでの間に、前記フィルタ清掃部によるフィルタの清掃を実行する
    　ことを特徴とする請求項１に記載の空気調和機。     A filter cleaning unit for cleaning a filter installed on the air suction side of the indoor heat exchanger;
    2. The air conditioner according to claim 1, wherein the control unit performs cleaning of the filter by the filter cleaning unit from when the heating operation is stopped until the first predetermined time elapses. .
  5. 　前記制御部は、前記フィルタ清掃部によるフィルタの清掃を実行している期間中の少なくとも一部の期間に、前記送風ファンを駆動する
    　ことを特徴とする請求項４に記載の空気調和機。     The air conditioner according to claim 4, wherein the control unit drives the blower fan during at least a part of a period during which the filter cleaning unit performs cleaning of the filter.
  6. 　前記制御部は、暖房運転の停止時から前記第１の所定時間が経過するまでの間、前記送風ファンを第１の回転速度で駆動し、
    　前記ファン清掃部による前記送風ファンの清掃を開始する際に、前記第１の回転速度よりも速い第２の回転速度とする
    　ことを特徴とする請求項１に記載の空気調和機。     The controller drives the blower fan at a first rotational speed until the first predetermined time elapses after the heating operation is stopped,
    2. The air conditioner according to claim 1, wherein when the cleaning of the blower fan by the fan cleaning unit is started, the second rotational speed is higher than the first rotational speed.
  7. 　室内熱交換器と、
    　前記室内熱交換器に空気を送り込む送風ファンと、
    　前記送風ファンを清掃するファン清掃部と、
    　前記ファン清掃部を制御する制御部と、を備え、
    　前記制御部は、冷房又は除湿の運転終了後に、前記ファン清掃部によって前記送風ファンを清掃する場合には、第２の所定時間の間、前記送風ファンを第１の回転速度で駆動し、前記第２の所定時間が経過した後に、前記ファン清掃部による前記送風ファンの清掃を開始する際に、前記送風ファンの回転速度を前記第１の回転速度よりも速い第２の回転速度とする空気調和機。     An indoor heat exchanger,
    A blower fan for sending air to the indoor heat exchanger;
    A fan cleaning section for cleaning the blower fan;
    A control unit for controlling the fan cleaning unit,
    When the fan cleaning unit cleans the blower fan after the cooling or dehumidifying operation, the controller drives the blower fan at a first rotational speed for a second predetermined time, and After the second predetermined time has elapsed, when the cleaning of the blower fan by the fan cleaning unit is started, the air having a rotation speed of the blower fan that is a second rotation speed higher than the first rotation speed Harmony machine.
PCT/JP2018/018517 2018-05-14 2018-05-14 Air conditioner WO2019220492A1 (en)

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