WO2009093468A1 - Indoor unit of air conditioning apparatus - Google Patents

Indoor unit of air conditioning apparatus Download PDF

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Publication number
WO2009093468A1
WO2009093468A1 PCT/JP2009/000265 JP2009000265W WO2009093468A1 WO 2009093468 A1 WO2009093468 A1 WO 2009093468A1 JP 2009000265 W JP2009000265 W JP 2009000265W WO 2009093468 A1 WO2009093468 A1 WO 2009093468A1
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WO
WIPO (PCT)
Prior art keywords
dust
air filter
brush
cleaning operation
air
Prior art date
Application number
PCT/JP2009/000265
Other languages
French (fr)
Japanese (ja)
Inventor
Tsuyoshi Yokomizo
Yoshiteru Nouchi
Yukihiro Takagaki
Akihiko Sakashita
Original Assignee
Daikin Industries, Ltd.
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 Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2009093468A1 publication Critical patent/WO2009093468A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42Auxiliary equipment or operation thereof
    • B01D46/44Auxiliary equipment or operation thereof controlling filtration
    • B01D46/442Auxiliary equipment or operation thereof controlling filtration by measuring the concentration of particles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0043Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0059Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/90Cleaning of purification apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2279/00Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/50Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for air conditioning
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/50Load

Definitions

  • the present invention relates to an indoor unit of an air conditioner equipped with an air filter cleaning function.
  • Patent Document 1 Conventionally, in an indoor unit of an air conditioner equipped with an air filter at an air suction port, an air filter cleaning operation is known. An indoor unit that performs this cleaning operation is disclosed in Patent Document 1.
  • the indoor unit of Patent Document 1 includes dust removing means for removing dust trapped by the air filter.
  • the dust removing means includes a filter driving means for reciprocating the air filter, and a brush that is disposed on the lower side of the air suction port in the movement path of the air filter and contacts both surfaces of the air filter. And have.
  • the dust removing means is configured to remove dust attached to the air filter by the brush while moving the air filter by the filter driving means.
  • the indoor unit of Patent Document 1 is provided with a dust box (dust storage unit), and the dust box is configured to store the dust removed by the dust removing means.
  • the user needs to periodically discharge the dust in the dust box so that the dust removed by the dust removing means does not overflow from the dust box.
  • the air conditioner of Patent Document 1 estimates the amount of dust in the dust box based on the accumulated operation time of the air conditioner. A maintenance sign is displayed based on the estimated amount of dust to inform the user when the dust in the dust box is to be discharged.
  • the air conditioner includes a timer that measures the accumulated operation time of the air conditioner, and displays a maintenance sign when the accumulated operation time by the timer has exceeded a predetermined accumulated operation time (2000 hours). It is like that.
  • the air filter cleaning operation is performed even though the dust box has enough dust. There is a problem of allowing. If the cleaning operation of the air filter is permitted in such a state, the dust removed by the cleaning operation overflows from the storage container without being stored in the storage container, and in some cases, the overflowing dust is It is also possible to fall to the indoor side.
  • the cleaning operation may not be prohibited even if dust is sufficiently stored in the dust box. If the cleaning operation of the air filter continues in such a state, the dust overflows from the storage container, as in the case where the timer is reset, and in some cases, the overflowing dust may enter the indoor side. It can also be dropped.
  • the present invention has been made in view of such a point, and an object thereof is to provide a storage container for storing dust removed by cleaning an air filter in an indoor unit of an air conditioner having a cleaning function for an air filter. This is to prevent malfunctions such as dust overflowing.
  • 1st invention has an air filter (30) which captures the dust in to-be-processed air, and dust removal means (40,50) which removes the dust trapped by the air filter (30),
  • dust removal means 40,50
  • An indoor unit of an air conditioner provided with a control means (39) for controlling the cleaning operation of the air filter (30) by the removing means (40, 50) is assumed.
  • the dust storage means (60, 90) is connected to the dust removal means (40, 50) of the indoor unit and stores the dust removed by the dust removal means (40, 50), and the dust removal means ( 40, 50) a detecting means (71) for detecting the amount of dust removed, and a dust amount determining section (38) for outputting a detection signal when the amount of dust detected by the detecting means (71) exceeds a predetermined amount.
  • the control means (39) is configured to prohibit the cleaning operation of the air filter (30) when the detection signal is input.
  • the dust amount determination unit (38) is configured not to output a detection signal when the amount of dust detected by the detection means (71) is less than a predetermined amount.
  • the control means (39) is configured to permit the cleaning operation of the air filter (30) when the detection signal is not input.
  • the cleaning operation of the air filter (30) is prohibited when the detection signal is input from the dust amount determination unit (38) to the control means (39). That is, in the conventional indoor unit, the amount of dust in the dust storage means (60, 90) is estimated from the accumulated operation time by the timer, and the cleaning operation of the air filter (30) is prohibited based on this estimated value.
  • the detection means (71) directly detects the amount of dust in the dust storage means (60, 90), and the cleaning operation of the air filter (30) is performed based on the detected value. Can be prohibited.
  • the dust storage means (60, 90) has a storage part (62) for storing dust therein, while the detection means (71) is provided with the storage part.
  • the light emitting part (72) disposed outside (62) and the light emitting part (72) which is opposed to the light emitting part (72) across the storage part (62) and transmitted through the storage part (62).
  • the light emitting part (72) and the light receiving part (73) are arranged with the storage part (62) in between.
  • the light of the light emitting part (72) passes through the storage part (62), and the light intensity of the transmitted light is detected by the light receiving part (73).
  • transmits light in the storage part (62) is formed with the transparent member.
  • the dust storage amount of the storage part (62) is detected according to the luminous intensity of the transmitted light. Specifically, in the storage unit (62), when the light transmission amount is large, the light intensity detected by the light receiving unit (73) increases, and it is determined that the dust storage amount is small. Conversely, if the amount of transmitted light is small, the light intensity detected by the light receiving unit (73) is low, and it is determined that the amount of dust stored is large.
  • the detection means (71) directly detects the amount of dust in the dust storage means (60, 90), and the air filter is based on the detected value. (30) Cleaning operation can be prohibited. That is, the indoor unit of the present invention does not require a timer for measuring the accumulated operation time of the air conditioner, and does not require a timer reset operation. In addition, unless the user discharges the dust in the dust storage means (60, 90) so that the detection signal is not output from the dust amount determination unit (38), the prohibited air filter (30) is cleaned. Cannot resume operation.
  • the cleaning operation of the air filter (30) is not permitted even though the dust box has enough dust stored therein, and is removed by the cleaning operation of the air filter (30). Malfunctions such as dust overflowing from the dust storage means (60, 90) for storing dust can be prevented.
  • the second aspect of the invention it is possible to provide the light emitting part (72) and the light receiving part (73) and detect the amount of stored dust based on the intensity of the light transmitted through the storing part (62). Therefore, the amount of dust stored in the storage unit (62) can be reliably detected.
  • FIG. 1 is a longitudinal sectional view of an indoor unit according to the present embodiment.
  • FIG. 2 is a horizontal sectional view of the indoor unit according to the present embodiment.
  • FIG. 3 is a perspective view when the decorative panel according to the present embodiment is viewed obliquely from below.
  • FIG. 4 is a perspective view when the lower casing according to the present embodiment is viewed obliquely from below.
  • FIG. 5 is a cross-sectional view of the first dust container according to the present embodiment.
  • FIG. 6 is a schematic configuration diagram of a control unit according to the present embodiment.
  • the indoor unit (1) of this embodiment constitutes a part of an air conditioner and is installed on the ceiling of the indoor space.
  • the air conditioner includes a refrigerant circuit in which a compressor, an outdoor heat exchanger and an expansion valve provided in an outdoor unit, and an indoor heat exchanger (22) provided in the indoor unit (1) are connected by piping. Yes.
  • the refrigerant circuit performs a vapor compression refrigeration cycle by reversibly circulating the refrigerant.
  • a cooling operation in which the indoor heat exchanger (22) functions as an evaporator in the refrigerant circuit and a heating operation in which the indoor heat exchanger (22) functions as a condenser in the refrigerant circuit are performed.
  • this indoor unit (1) has the automatic cleaning function of an air filter (30).
  • the indoor unit (1) includes a casing (20) including a substantially rectangular parallelepiped box-shaped main body casing (10) and a rectangular plate-shaped decorative panel (11). .
  • the main casing (10) is installed behind the ceiling.
  • the main casing (10) includes an upper casing (10a) and a lower casing (10b) attached to the lower portion of the upper casing (10a).
  • a heat insulating material (17) is laminated on the inner surface of the upper casing (10a).
  • the decorative panel (11) is attached to the main casing (10) so as to cover the lower side of the main casing (10). In this state, the front surface (lower surface) of the decorative panel (11) is exposed to the indoor space, and the outer peripheral portion of the rear surface (upper surface) of the decorative panel (11) contacts the ceiling plate (16).
  • Each corner of the decorative panel (11) is composed of a corner panel (45) as shown in FIG.
  • Each corner panel (45) is removable from the main body of the decorative panel (11).
  • One of the four corner panels (45) is provided with a lighting part (33) that is lit by the control of a control part (35) described later.
  • the suction panel (13) and the air outlet (14) are formed in the decorative panel (11).
  • the suction port (13) is formed in a rectangular shape, and is arranged at the center of the decorative panel (11).
  • a slit-like suction grill (12) is fitted into the suction port (13).
  • the air outlet (14) is formed so as to surround the entire periphery of the air inlet (13).
  • the blower outlet (14) is formed along the outer periphery of the decorative panel (11).
  • the air outlet (14) is formed not only in the portion along each side of the decorative panel (11) but also in the corner portion.
  • the decorative panel (11) is formed with an insertion port (18) for removing dust from first and second dust storage containers (60, 90) described later.
  • the lower casing (10b) includes an air filter (30), a filter driving unit (40), a brush unit (50), a first dust container (60), A two dust container (90) is provided.
  • the filter drive unit (40) and the brush unit (50) constitute dust removing means, and the first dust storage container (60) and the second dust storage container (90) constitute dust storing means.
  • the indoor fan (21) is a so-called turbo fan.
  • the indoor fan (21) is disposed near the center of the upper casing (10a).
  • the indoor fan (21) includes a fan motor (21a) and an impeller (21b).
  • the fan motor (21a) is fixed to the top plate of the upper casing (10a).
  • the impeller (21b) is connected to the rotation shaft of the fan motor (21a).
  • a bell mouth (24) communicating with the suction port (13) is provided below the indoor fan (21).
  • the indoor fan (21) is configured to blow out air sucked from below through the bell mouth (24) in the circumferential direction.
  • the indoor heat exchanger (22) is a cross-fin type fin-and-tube heat exchanger.
  • the indoor heat exchanger (22) is formed in a square shape in plan view, and is disposed so as to surround the periphery of the indoor fan (21). In the indoor heat exchanger (22), heat is exchanged between the indoor air sent by the indoor fan (21) and the refrigerant.
  • the drain pan (23) is provided under the indoor heat exchanger (22).
  • the drain pan (23) is for receiving drain water generated by condensation of moisture in the air in the indoor heat exchanger (22).
  • the drain pan (23) is provided with a drain pump for draining drain water (not shown).
  • the air filter (30) is for capturing dust in the air from the suction port (13) toward the bell mouth (24).
  • the air filter (30) is formed in a disk shape.
  • the air filter (30) is attached so as to cover a circular vent formed in the partition plate (25) at the upper end of the lower casing (10b).
  • the air filter (30) is rotatably attached to the center of a rib (not shown) that divides the vent hole of the partition plate (25) into four parts.
  • a filter-side gear portion is formed on the outer peripheral surface of the air filter (30) (not shown).
  • the filter drive unit (40) includes a motor and a motor-side gear unit that is rotated by the motor.
  • the filter drive part (40) is provided outside the air filter (30) so that the motor side gear part meshes with the filter side gear part.
  • the filter drive unit (40) rotates the air filter (30) by the rotation of the motor during a cleaning operation in which dust is removed from the air filter (30) by a brush unit (50) described later.
  • the brush unit (50) is for removing dust trapped by the air filter (30).
  • the brush unit (50) is attached to a first dust container (60) described later.
  • the brush unit (50) includes a rotating brush (51) that contacts the air filter (30), and a brush drive unit (53) that rotates the rotating brush (51).
  • the surface of the rotating brush (51) is divided into a brush surface and a non-brush surface.
  • the brush driving unit (53) rotates the rotating brush (51) during the cleaning operation.
  • the upper part is a storage part (61) for storing the brush unit (50), and the lower part is dust removed from the air filter (30). It is a storage part (62) where water accumulates.
  • a first window part (64) and a second window part (65) made of a transparent member are provided in a part facing a light emitting diode (72) and a phototransistor (73) described later. It has been. Dust scraped from the air filter (30) by the rotating brush (51) and the cleaning brush (52) provided in the storage unit (61) are scraped from the rotating brush (51) to the reservoir (62). It is configured to collect the dust that has been dropped.
  • a damper box (81) having a first chamber and a second chamber formed therein is connected to the first dust container (60).
  • the damper box (81) is provided with a damper (82) that opens and closes the communication port between the first chamber and the second chamber.
  • An introduction duct (86) that opens above the bell mouth (24) is connected to the upper surface of the first chamber.
  • a suction duct (87) communicating with the insertion port (18) is connected to the lower surface of the second chamber of the damper box (81).
  • the second dust storage container (90) is disposed below the air filter (30) together with the first dust storage container (60), and is connected to the first dust storage container (60) via the transfer duct (88). Has been. As shown in FIG. 2, the second dust container (90) has an exhaust port (91). A filter (92) is attached to the exhaust port (91). The exhaust port (91) communicates with the outside of the casing (20) through the exhaust passage (19) of the lower casing (10b).
  • a detection sensor (detection means) (71) is provided for detecting the amount of dust stored in the storage section (62) of the first dust storage container (60).
  • the detection sensor (71) is an infrared sensor.
  • the detection sensor (71) is accommodated in the sensor box (70) attached to the storage part (62) of the first dust storage container (60).
  • the detection sensor (71) includes a pair of light emitting diodes (light emitting units) (72) and phototransistors (light receiving units) (73) installed at the same height.
  • the light emitting diode (72) and the phototransistor (73) are provided at a height slightly lower than the central height of the storage portion (62).
  • the detection sensor (71) the light emitted from the light emitting diode (72) is sequentially transmitted through the first window (64) and the second window (65), and the intensity of the transmitted light is determined by the phototransistor (73). ) Is detected. Based on the detected light intensity, a storage amount detection unit (not shown) built in the detection sensor (71) detects the amount of dust stored in the storage unit (62).
  • the light transmittance (transmission amount) from the first window portion (64) to the second window portion (65) in the storage portion (62) increases and is detected. Brightness increases.
  • the transmittance (transmission amount) of light from the first window portion (64) to the second window portion (65) in the storage portion (62) decreases, and the detected light intensity Becomes lower.
  • the indoor unit (1) of the present embodiment is provided with a control unit (35) that controls the air conditioning operation and the cleaning operation of the air filter (30).
  • the control unit (35) is provided on a control board (31) in a control box (not shown) in which the lower casing (10b) is accommodated, and is connected to an output determination unit (dust amount determination unit) (38) and a cleaning operation.
  • a control unit (control means) 39).
  • the control unit (35) includes a remote control (48)
  • the output determination unit (38) includes a detection sensor (71)
  • the cleaning operation control unit (39) performs cleaning.
  • the sign output units (33, 34, 56) are electrically connected to each other.
  • the output determination unit (38) generates a detection signal indicating that the storage unit (62) is filled with dust based on the light intensity detected by the detection sensor (71).
  • the cleaning operation control unit (39) It is comprised so that it may determine whether it outputs to. Specifically, a determination light intensity for determining whether or not to output a detection signal is set in advance.
  • the output determination unit (38) outputs a detection signal if the detected light intensity is less than the determination light intensity, and does not output a detection signal if the detection light intensity is equal to or greater than the determination light intensity.
  • the cleaning operation control unit (39) is configured to prohibit a cleaning operation of an air filter (30) described later when a detection signal from the output determination unit (38) is input. Further, the cleaning operation control unit (39) needs to remove dust from the first and second dust storage containers (60, 90) while the cleaning operation of the air filter (30) is prohibited. Control is performed to output a cleaning sign for informing the cleaning sign output unit (33, 34, 56).
  • the cleaning sign output unit (33, 34, 56) is a liquid crystal display of the lighting unit (33) of the decorative panel (11) and the remote control (48) for the user to input on / off of air conditioning operation and cleaning operation, etc. Part (34) and a remote control lighting part (56).
  • the cleaning sign is displayed on the lighting part (33), the liquid crystal display part (34) and the remote control lighting part (56).
  • the indoor unit (1) is configured to be switchable between a normal operation for performing air conditioning and a filter cleaning operation for cleaning the air filter (30). Further, a filter cleaning prohibiting operation for prohibiting the filter cleaning operation is also performed.
  • the indoor fan (21) is driven. Then, in the indoor unit (1), the indoor air sucked from the suction port (13) passes through the air filter (30) and flows into the bell mouth (24). When air passes through the air filter (30), dust in the air is captured by the air filter (30). The air flowing into the bell mouth (24) is blown out from the indoor fan (21). The blown air is cooled or heated by exchanging heat with the refrigerant in the indoor heat exchanger (22), and then supplied into the room from each outlet (14). Thereby, indoor cooling or heating is performed. In this operation, since the damper (82) of the damper box (81) is closed, the air blown from the indoor fan (21) is not introduced into the first dust container (60) through the damper box (81). Absent.
  • the brush surface of the rotating brush (51) and the air filter (30) are in a non-contact state. That is, the brush surface is separated from the air filter (30). Therefore, it is possible to prevent deterioration due to continuous contact with the air filter (30) on the brush surface. Thereby, durability of a rotating brush (51) improves.
  • ⁇ Filter cleaning operation In the filter cleaning operation, the compressor is stopped in the refrigerant circuit, and the refrigerant does not circulate. In this filter cleaning operation, “dust removal operation”, “brush cleaning operation”, “dust transport operation”, and “dust discharge operation” are switchable.
  • Dust removal operation is an operation to remove dust trapped in the air filter (30).
  • the “brush cleaning operation” is an operation for removing dust trapped on the rotating brush (51).
  • the “dust transfer operation” is an operation of transferring dust from the first dust container (60) to the second dust container (90).
  • the “dust discharging operation” is an operation for discharging dust from the second dust container (90) to the outside of the casing (10).
  • “dust removal operation” and “brush cleaning operation” are performed alternately.
  • the rotary fan (51) is rotated and the brush surface is brought into contact with the air filter (30) while the indoor fan (21) is operated.
  • the dust can be removed by the indoor fan (21) while the air filter (30) holds the dust.
  • the rotating brush (51) may be rotated to bring the brush surface into contact with the air filter (30).
  • the air filter (30) rotates counterclockwise when viewed from the lower side of the indoor unit (1) in a state where the brush surface of the rotating brush (51) is in contact with the air filter (30). .
  • the air filter (30) moves so as to face the bristles of the brush surface of the rotating brush (51).
  • the rotating brush (51) remains stopped.
  • the rotating brush (51) first rotates with the indoor fan (21) stopped. At that time, the rotating brush (51) rotates while dust is captured on the brush surface. Further, the rotating brush (51) rotates while the brushes of the rotating brush (51) and the cleaning brush (52) are in contact with each other. The rotating brush (51) stops when it rotates by a predetermined rotation angle.
  • the rotating brush (51) rotates in the reverse direction. Then, the dust trapped on the brush surface of the rotating brush (51) is removed by the cleaning brush (52). This is because the bristles of the cleaning brush (52) are inclined downward, that is, the bristles are inclined in a direction opposite to the rotation direction of the rotating brush (51). Is scraped off.
  • the cleaning brush (52) is pushed rearward when the two brushes come into contact with each other, but the main body (52a) is rotated by the spring (51) attached to the inner wall of the storage part (61). It is urged to the side.
  • the brushes are not separated from each other, and the cleaning brush (52) is appropriately pressed against the rotating brush (51). Therefore, dust is more reliably removed from the brush surface of the rotating brush (51).
  • dust is captured by the cleaning brush (52).
  • the rotating brush (51) rotates to the original state and stops.
  • the rotating brush (51) rotates again by a predetermined rotation angle. Then, the dust captured by the cleaning brush (52) is scraped off by the brush surface of the rotary brush (51) and falls to the storage part (62) of the first dust storage container (60). This is because the bristles of the brush surface of the rotating brush (51) are inclined in the rotating direction, so that dust is reliably scraped off from the cleaning brush (52). At this time, similarly to the above, since the cleaning brush (52) is appropriately pressed against the rotating brush (51) by the spring portion, dust is more reliably removed from the cleaning brush (52).
  • the dust trapped on the rotating brush (51) is removed and stored in the storage part (62) of the first dust storage container (60). Thereafter, the rotating brush (51) rotates again in the reverse direction to return to the original state, and the “brush cleaning operation” is temporarily ended.
  • the “dust removal operation” described above is performed again. That is, the air filter (30) is rotated again, and when the limit switch is actuated again, the air filter (30) stops. Thereby, the dust of the area
  • both the rotating brush (51) and the air filter (30) are stopped.
  • the damper (82) of the damper box (81) is opened.
  • the indoor fan (21) is driven.
  • the air blown from the indoor fan (21) is introduced into the first dust container (60) through the introduction duct (86) and the damper box (81) in this order.
  • the dust in the first dust container (60) is transferred together with the air to the second dust container (90) via the transfer duct (88).
  • “dust removal operation” is performed according to predetermined conditions. For example, when the “dust transfer operation” is performed a predetermined number of times (predetermined time), the “dust discharge operation” is performed. Or you may make it perform by remote control operation by a user. This operation is also performed when the above-described cleaning sign is displayed.
  • both the rotating brush (51) and the air filter (30) are stopped, as in the “dust transfer operation” described above. Further, the damper (82) of the damper box (81) is closed. In this state, the user inserts the hose of the vacuum cleaner into the insertion port (18) of the decorative panel (11).
  • the dust in the second dust container (90) is sucked into the cleaner through the transfer duct (88), the first dust container (60), and the suction duct (87) in this order.
  • the dust in the first dust container (60) is also sucked into the cleaner through the suction duct (87).
  • the dust in the second dust container (90) and the first dust container (60) is discharged out of the casing (10).
  • the cleaning operation control unit (39) prohibits the cleaning operation of the air filter (30) when the detection signal from the output determination unit (38) is input.
  • the cleaning operation control unit (39) prohibits the cleaning operation of the air filter (30) while the first and second dust storage containers (60) are connected to the cleaning sign output unit (33, 34, 56). , 90) is controlled so as to output a cleaning sign for informing that it is necessary to remove dust.
  • the detection sensor (71) is provided in the first dust container (60). Assuming that the detection sensor (71) is provided in the second dust container (90), the control unit (35) is configured so that the air filter is used even though the first dust container (60) is full. This is because a malfunction may be caused in that the cleaning operation is continued.
  • the control unit (35) allows the air filter (30) to be used regardless of whether the first dust container (60) is full. ) Can be prevented from malfunctioning by continuing the cleaning operation.
  • the cleaning operation of the air filter (30) is prohibited. That is, in the conventional indoor unit, the amount of dust in the first and second dust storage containers (60, 90) is estimated from the accumulated operation time by the timer, and the cleaning operation of the air filter (30) is performed based on the estimated value.
  • the detection sensor (71) directly detects the amount of dust in the first and second dust storage containers (60, 90), and based on this detected value. Thus, the cleaning operation of the air filter (30) can be prohibited.
  • the indoor unit of the present embodiment does not require a timer for measuring the accumulated operation time of the air conditioner, and does not require a timer reset operation.
  • the indoor unit of the present embodiment does not require a timer for measuring the accumulated operation time of the air conditioner, and does not require a timer reset operation.
  • the cleaning operation of the air filter (30) is not permitted even though the first and second dust storage containers (60, 90) are sufficiently stored with dust.
  • the dust storage means for storing the dust removed by the cleaning operation of the air filter (30) is configured by the first and second dust storage containers (60, 90), but it is necessary to limit to this.
  • the dust removed from the air filter (30) is stored in the second dust storage container (90) without being temporarily stored.
  • the detection sensor (71) is preferably provided in the transfer duct (88) that connects the damper box (81) and the second dust container (90). In this way, the amount of dust accumulated in the transfer duct (88) can be detected, and the cleaning operation control section (39) can prohibit the cleaning operation of the air filter (30).
  • the indoor unit (1) installed on the indoor ceiling has been described.
  • the present invention is not limited to this, and a so-called wall-mounted indoor unit installed on an indoor wall can also be applied.
  • the filter cleaning operation when the detection sensor (71) detects that the storage section (62) is full, the filter cleaning operation is prohibited and a cleaning sign is output.
  • the prohibition of the air-conditioning operation which is the normal operation of cooling and heating, and the prohibition of the filter cleaning operation may be controlled in stages.
  • the control unit (35) prohibits the filter cleaning operation as described above. However, in this state, the air conditioning operation of the air conditioning is permitted and the air conditioning operation can be continued.
  • the control unit (35) may be configured to prohibit the air conditioning operation when the air conditioning operation is continued for a predetermined time after the filter cleaning operation is prohibited.
  • the present invention is useful for an indoor unit of an air conditioner having an air filter cleaning function.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Air Conditioning Control Device (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

An indoor unit is provided with a detection sensor (71) for detecting a dust quantity of a first dust storing container and that of a second dust storing container; an output judging section (38) which outputs a detection signal when the dust quantity detected by the detection sensor (71) is a prescribed quantity or more; and a cleaning operation control section (39) which prohibits cleaning operation of an air filter when the detection signal is inputted.

Description

空気調和装置の室内ユニットIndoor unit of air conditioner
  本発明は、エアフィルタの清掃機能を備えた空気調和装置の室内ユニットに関するものである。 The present invention relates to an indoor unit of an air conditioner equipped with an air filter cleaning function.
  従来より、空気の吸込口にエアフィルタを備えた空気調和装置の室内ユニットにおいて、エアフィルタの清掃運転を行うものが知られている。そして、この清掃運転を行う室内ユニットが特許文献1に開示されている。 Conventionally, in an indoor unit of an air conditioner equipped with an air filter at an air suction port, an air filter cleaning operation is known. An indoor unit that performs this cleaning operation is disclosed in Patent Document 1.
  特許文献1の室内ユニットは、エアフィルタに捕捉された塵埃を除去する塵埃除去手段を備えている。具体的に、上記塵埃除去手段は、上記エアフィルタを往復移動させるフィルタ駆動手段と、上記エアフィルタの移動経路内において上記空気吸入口の下部側に配置されて上記エアフィルタの両面に接触するブラシとを有している。そして、上記塵埃除去手段は、上記フィルタ駆動手段により上記エアフィルタを移動させつつ、上記ブラシによりエアフィルタに付着した塵埃を除去するように構成されている。 The indoor unit of Patent Document 1 includes dust removing means for removing dust trapped by the air filter. Specifically, the dust removing means includes a filter driving means for reciprocating the air filter, and a brush that is disposed on the lower side of the air suction port in the movement path of the air filter and contacts both surfaces of the air filter. And have. The dust removing means is configured to remove dust attached to the air filter by the brush while moving the air filter by the filter driving means.
  また、特許文献1の室内ユニットには、ダストボックス(塵埃貯留部)が設けられ、このダストボックスに上記塵埃除去手段で除去された塵埃が貯留されるように構成されている。この構成において、ユーザは、上記塵埃除去手段で除去された塵埃がダストボックスから溢れ出ないように、該ダストボックス内の塵埃を定期的に排出する必要がある。 Also, the indoor unit of Patent Document 1 is provided with a dust box (dust storage unit), and the dust box is configured to store the dust removed by the dust removing means. In this configuration, the user needs to periodically discharge the dust in the dust box so that the dust removed by the dust removing means does not overflow from the dust box.
  特許文献1の空気調和装置は、空気調和装置の運転積算時間に基づいてダストボックス内の塵埃の量を推定している。そして、この塵埃の推定量に基づいてメンテナンスサインを表示することにより、ユーザにダストボックス内の塵埃を排出する時期を知らせている。具体的に、上記空気調和装置は、該空気調和装置の運転積算時間を計測するタイマを備え、このタイマによる運転積算時間が所定の運転積算時間(2000時間)を経過すると、メンテナンスサインを表示するようになっている。 The air conditioner of Patent Document 1 estimates the amount of dust in the dust box based on the accumulated operation time of the air conditioner. A maintenance sign is displayed based on the estimated amount of dust to inform the user when the dust in the dust box is to be discharged. Specifically, the air conditioner includes a timer that measures the accumulated operation time of the air conditioner, and displays a maintenance sign when the accumulated operation time by the timer has exceeded a predetermined accumulated operation time (2000 hours). It is like that.
  また、上記空気調和装置において、このメンテナンスサインの表示中は、エアフィルタの清掃運転を禁止して、ダストボックス内に塵埃を流入させないようにしている。したがって、ユーザは、ダストボックス内の塵埃を排出して上記タイマをリセットする動作を行わなければ、エアフィルタの清掃運転を再開することができない。
特開2004-239449号公報
Further, in the above air conditioner, while the maintenance sign is displayed, the cleaning operation of the air filter is prohibited so that dust does not flow into the dust box. Therefore, the user cannot restart the cleaning operation of the air filter unless discharging the dust in the dust box and resetting the timer.
JP 2004-239449 A
  しかしながら、メンテナンスサインの表示中において、ユーザがダストボックス内の塵埃を排出することなく、上記タイマをリセットさせてしまった場合、ダストボックスに塵埃が十分に貯留されているにもかかわらずエアフィルタの清掃運転を許可してしまうという問題がある。このような状態でエアフィルタの清掃運転を許可してしまうと、清掃運転により除去された塵埃が貯留容器に貯留されずに該貯留容器から溢れ出てしまい、場合によってはその溢れ出た塵埃が室内側へ落下することも考えられる。 However, if the user resets the timer without discharging the dust in the dust box while the maintenance sign is displayed, the air filter cleaning operation is performed even though the dust box has enough dust. There is a problem of allowing. If the cleaning operation of the air filter is permitted in such a state, the dust removed by the cleaning operation overflows from the storage container without being stored in the storage container, and in some cases, the overflowing dust is It is also possible to fall to the indoor side.
  逆に、上記タイマによりメンテナンスサインを表示する場合において、ダストボックス内に塵埃が十分に貯留されていても清掃運転が禁止されないこともある。このような状態でエアフィルタの清掃運転が継続すると、上記タイマをリセットさせてしまった場合と同様に、塵埃が該貯留容器から溢れ出てしまい、場合によってはその溢れ出た塵埃が室内側へ落下することも考えられる。 Conversely, when the maintenance sign is displayed by the timer, the cleaning operation may not be prohibited even if dust is sufficiently stored in the dust box. If the cleaning operation of the air filter continues in such a state, the dust overflows from the storage container, as in the case where the timer is reset, and in some cases, the overflowing dust may enter the indoor side. It can also be dropped.
  本発明は、かかる点に鑑みてなされたものであり、その目的は、エアフィルタの清掃機能を備えた空気調和装置の室内ユニットにおいて、エアフィルタの清掃により除去された塵埃を貯留する貯留容器から塵埃が溢れ出たりするような誤作動を防止することである。 The present invention has been made in view of such a point, and an object thereof is to provide a storage container for storing dust removed by cleaning an air filter in an indoor unit of an air conditioner having a cleaning function for an air filter. This is to prevent malfunctions such as dust overflowing.
  第1の発明は、被処理空気中の塵埃を捕捉するエアフィルタ(30)と、エアフィルタ(30)に捕捉された塵埃を除去する塵埃除去手段(40,50)とを有し、上記塵埃除去手段(40,50)によるエアフィルタ(30)の清掃運転を制御する制御手段(39)を備えた空気調和装置の室内ユニットを前提としている。 1st invention has an air filter (30) which captures the dust in to-be-processed air, and dust removal means (40,50) which removes the dust trapped by the air filter (30), The above-mentioned dust An indoor unit of an air conditioner provided with a control means (39) for controlling the cleaning operation of the air filter (30) by the removing means (40, 50) is assumed.
  そして、上記室内ユニットの塵埃除去手段(40,50)に接続されるとともに該塵埃除去手段(40,50)で除去した塵埃を貯留する塵埃貯留手段(60,90)と、上記塵埃除去手段(40,50)で除去した塵埃の量を検出する検出手段(71)と、上記検出手段(71)で検出した塵埃量が所定量以上になると検出信号を出力する塵埃量判定部(38)とを有し、上記制御手段(39)は、上記検出信号が入力されると、エアフィルタ(30)の清掃運転を禁止するように構成されていることを特徴としている。 The dust storage means (60, 90) is connected to the dust removal means (40, 50) of the indoor unit and stores the dust removed by the dust removal means (40, 50), and the dust removal means ( 40, 50) a detecting means (71) for detecting the amount of dust removed, and a dust amount determining section (38) for outputting a detection signal when the amount of dust detected by the detecting means (71) exceeds a predetermined amount. The control means (39) is configured to prohibit the cleaning operation of the air filter (30) when the detection signal is input.
  ここで、上記塵埃量判定部(38)は、上記検出手段(71)で検出した塵埃量が所定量より少ない場合には、検出信号を出力しないように構成されている。また、上記制御手段(39)は、上記検出信号が入力されない場合には、エアフィルタ(30)の清掃運転を許可するように構成されている。 Here, the dust amount determination unit (38) is configured not to output a detection signal when the amount of dust detected by the detection means (71) is less than a predetermined amount. The control means (39) is configured to permit the cleaning operation of the air filter (30) when the detection signal is not input.
  第1の発明では、上記塵埃量判定部(38)から制御手段(39)へ上記検出信号が入力されると、エアフィルタ(30)の清掃運転を禁止するように構成されている。つまり、従来の室内ユニットでは、タイマによる運転積算時間から上記塵埃貯留手段(60,90)の塵埃の量を推定し、この推定値に基づいてエアフィルタ(30)の清掃運転を禁止させていたが、第1の発明では、上記検出手段(71)で上記塵埃貯留手段(60,90)の塵埃の量を直接的に検知し、この検知した値に基づいてエアフィルタ(30)の清掃運転を禁止することができる。 In the first invention, the cleaning operation of the air filter (30) is prohibited when the detection signal is input from the dust amount determination unit (38) to the control means (39). That is, in the conventional indoor unit, the amount of dust in the dust storage means (60, 90) is estimated from the accumulated operation time by the timer, and the cleaning operation of the air filter (30) is prohibited based on this estimated value. However, in the first invention, the detection means (71) directly detects the amount of dust in the dust storage means (60, 90), and the cleaning operation of the air filter (30) is performed based on the detected value. Can be prohibited.
  第2の発明は、第1の発明において、上記塵埃貯留手段(60,90)は、その内部に塵埃を貯留する貯留部(62)を有する一方、上記検出手段(71)は、該貯留部(62)の外側に配置される発光部(72)と、上記貯留部(62)を挟んで上記発光部(72)と対峙し該貯留部(62)を透過した上記発光部(72)の光の光度を検出する受光部(73)とを備え、該受光部(73)の検出光度に基づいて上記塵埃貯留手段(60,90)の塵埃量を検出するように構成されていることを特徴としている。 In a second aspect based on the first aspect, the dust storage means (60, 90) has a storage part (62) for storing dust therein, while the detection means (71) is provided with the storage part. The light emitting part (72) disposed outside (62) and the light emitting part (72) which is opposed to the light emitting part (72) across the storage part (62) and transmitted through the storage part (62). A light receiving portion (73) for detecting the light intensity of light, and configured to detect the amount of dust in the dust storing means (60, 90) based on the light intensity detected by the light receiving portion (73). It is a feature.
  第2の発明では、上記発光部(72)と受光部(73)とが貯留部(62)を間に存して配置されている。発光部(72)の光が貯留部(62)を透過し、その透過した光の光度は受光部(73)によって検出される。尚、貯留部(62)における光を透過する部分は透明部材で形成されているのが好ましい。そして、その透過した光の光度に応じて貯留部(62)の塵埃貯留量が検出される。具体的に、貯留部(62)において、光の透過量が多いと受光部(73)による検出光度が高くなり、塵埃貯留量が少ないと判断される。逆に、光の透過量が少ないと受光部(73)による検出光度が低くなり、塵埃貯留量が多いと判断される。 In the second invention, the light emitting part (72) and the light receiving part (73) are arranged with the storage part (62) in between. The light of the light emitting part (72) passes through the storage part (62), and the light intensity of the transmitted light is detected by the light receiving part (73). In addition, it is preferable that the part which permeate | transmits light in the storage part (62) is formed with the transparent member. And the dust storage amount of the storage part (62) is detected according to the luminous intensity of the transmitted light. Specifically, in the storage unit (62), when the light transmission amount is large, the light intensity detected by the light receiving unit (73) increases, and it is determined that the dust storage amount is small. Conversely, if the amount of transmitted light is small, the light intensity detected by the light receiving unit (73) is low, and it is determined that the amount of dust stored is large.
  本発明によれば、従来の室内ユニットとは違い、上記検出手段(71)で上記塵埃貯留手段(60,90)の塵埃の量を直接的に検知し、この検知した値に基づいてエアフィルタ(30)の清掃運転を禁止することができる。つまり、本発明の室内ユニットは、空気調和装置の運転積算時間を計測するタイマを設ける必要がなく、タイマのリセット動作も必要がない。また、ユーザが、塵埃貯留手段(60,90)内の塵埃を排出して、上記塵埃量判定部(38)から検出信号が出力されないようにしなければ、禁止されたエアフィルタ(30)の清掃運転を再開することができない。 According to the present invention, unlike the conventional indoor unit, the detection means (71) directly detects the amount of dust in the dust storage means (60, 90), and the air filter is based on the detected value. (30) Cleaning operation can be prohibited. That is, the indoor unit of the present invention does not require a timer for measuring the accumulated operation time of the air conditioner, and does not require a timer reset operation. In addition, unless the user discharges the dust in the dust storage means (60, 90) so that the detection signal is not output from the dust amount determination unit (38), the prohibited air filter (30) is cleaned. Cannot resume operation.
  以上により、従来とは違い、ダストボックスに塵埃が十分に貯留されているにもかかわらずエアフィルタ(30)の清掃運転を許可してしまうことがなく、エアフィルタ(30)の清掃運転により除去された塵埃を貯留する塵埃貯留手段(60,90)から塵埃が溢れ出たりするような誤作動を防止することができる。 As described above, unlike the conventional case, the cleaning operation of the air filter (30) is not permitted even though the dust box has enough dust stored therein, and is removed by the cleaning operation of the air filter (30). Malfunctions such as dust overflowing from the dust storage means (60, 90) for storing dust can be prevented.
  第2の発明によれば、発光部(72)と受光部(73)を設けて、貯留部(62)において透過した光の光度に基づき塵埃貯留量を検出することができる。したがって、確実に貯留部(62)の塵埃貯留量を検出することができる。 According to the second aspect of the invention, it is possible to provide the light emitting part (72) and the light receiving part (73) and detect the amount of stored dust based on the intensity of the light transmitted through the storing part (62). Therefore, the amount of dust stored in the storage unit (62) can be reliably detected.
図1は、本実施形態に係る室内ユニットの縦断面図である。FIG. 1 is a longitudinal sectional view of an indoor unit according to the present embodiment. 図2は、本実施形態に係る室内ユニットの水平断面図である。FIG. 2 is a horizontal sectional view of the indoor unit according to the present embodiment. 図3は、本実施形態に係る化粧パネルを斜め下方から見た場合の斜視図である。FIG. 3 is a perspective view when the decorative panel according to the present embodiment is viewed obliquely from below. 図4は、本実施形態に係る下側ケーシングを斜め下方から見た場合の斜視図である。FIG. 4 is a perspective view when the lower casing according to the present embodiment is viewed obliquely from below. 図5は、本実施形態に係る第1塵埃貯留容器の断面図である。FIG. 5 is a cross-sectional view of the first dust container according to the present embodiment. 図6は、本実施形態に係る制御部の概略構成図である。FIG. 6 is a schematic configuration diagram of a control unit according to the present embodiment.
符号の説明Explanation of symbols
1       室内ユニット
20      ケーシング
21      室内ファン
22      室内熱交換器
30      エアフィルタ
35      制御部
38      出力判定部(塵埃量判定部 )
39      清掃運転制御部(制御手段)
48      リモコン
60      第1塵埃貯留容器(塵埃貯留手段)
71      検知センサ(検出手段 )
72      発光ダイオード(発光部)
73      フォトトランジスタ(受光部)
90      第2塵埃貯留容器(塵埃貯留手段)
1 Indoor unit
20 casing
21 Indoor fan
22 Indoor heat exchanger
30 Air filter
35 Control unit
38 Output judgment part (Dust amount judgment part)
39 Cleaning operation control unit (control means)
48 Remote control
60 First dust storage container (dust storage means)
71 Detection sensor (detection means)
72 Light emitting diode (light emitting part)
73 Phototransistor (receiver)
90 Second dust container (dust storage means)
  以下、本発明の実施形態を図面に基づいて詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
  本実施形態の室内ユニット(1)は、空気調和装置の一部を構成し、室内空間の天井に設置される。空気調和装置は、室外ユニットに設けられる圧縮機、室外熱交換器および膨張弁と、上記室内ユニット(1)に設けられる室内熱交換器(22)とが配管接続されて成る冷媒回路を備えている。冷媒回路は、冷媒が可逆に循環して、蒸気圧縮式冷凍サイクルを行う。空気調和装置では、冷媒回路において室内熱交換器(22)が蒸発器として機能する冷房運転と、冷媒回路において室内熱交換器(22)が凝縮器として機能する暖房運転とが行われる。そして、この室内ユニット(1)は、エアフィルタ(30)の自動清掃機能を有している。 The indoor unit (1) of this embodiment constitutes a part of an air conditioner and is installed on the ceiling of the indoor space. The air conditioner includes a refrigerant circuit in which a compressor, an outdoor heat exchanger and an expansion valve provided in an outdoor unit, and an indoor heat exchanger (22) provided in the indoor unit (1) are connected by piping. Yes. The refrigerant circuit performs a vapor compression refrigeration cycle by reversibly circulating the refrigerant. In the air conditioner, a cooling operation in which the indoor heat exchanger (22) functions as an evaporator in the refrigerant circuit and a heating operation in which the indoor heat exchanger (22) functions as a condenser in the refrigerant circuit are performed. And this indoor unit (1) has the automatic cleaning function of an air filter (30).
  -室内ユニットの構成-
  図1から図4に示すように、室内ユニット(1)は、略直方体の箱状の本体ケーシング(10)と、矩形板状の化粧パネル(11)とからなるケーシング(20)を備えている。本体ケーシング(10)は天井裏に設置される。本体ケーシング(10)は、上側ケーシング(10a)と、上側ケーシング(10a)の下部に取り付けられる下側ケーシング(10b)とを備えている。上側ケーシング(10a)の内面には、断熱材(17)が積層されている。
-Configuration of indoor unit-
As shown in FIGS. 1 to 4, the indoor unit (1) includes a casing (20) including a substantially rectangular parallelepiped box-shaped main body casing (10) and a rectangular plate-shaped decorative panel (11). . The main casing (10) is installed behind the ceiling. The main casing (10) includes an upper casing (10a) and a lower casing (10b) attached to the lower portion of the upper casing (10a). A heat insulating material (17) is laminated on the inner surface of the upper casing (10a).
  化粧パネル(11)は、本体ケーシング(10)の下側を覆うように本体ケーシング(10)に取り付けられる。この状態では、化粧パネル(11)の前面(下面)が室内空間に露出すると共に、化粧パネル(11)の背面(上面)の外周部分が天井板(16)に当接する。 The decorative panel (11) is attached to the main casing (10) so as to cover the lower side of the main casing (10). In this state, the front surface (lower surface) of the decorative panel (11) is exposed to the indoor space, and the outer peripheral portion of the rear surface (upper surface) of the decorative panel (11) contacts the ceiling plate (16).
  化粧パネル(11)の各コーナー部は、図3に示すように、コーナーパネル(45)により構成されている。各コーナーパネル(45)は、化粧パネル(11)の本体に対して取り外し可能になっている。4つのコーナーパネル(45)のうちの1つには、後述する制御部(35)の制御によって点灯する点灯部(33)が取り付けられている。 Each corner of the decorative panel (11) is composed of a corner panel (45) as shown in FIG. Each corner panel (45) is removable from the main body of the decorative panel (11). One of the four corner panels (45) is provided with a lighting part (33) that is lit by the control of a control part (35) described later.
  化粧パネル(11)には、吸込口(13)と吹出口(14)とが形成されている。吸込口(13)は、矩形状に形成され、化粧パネル(11)の中央部に配置されている。吸込口(13)には、スリット状の吸込グリル(12)が嵌め込まれている。一方、吹出口(14)は、吸込口(13)の全周囲を囲うように形成されている。吹出口(14)は、化粧パネル(11)の外周に沿って形成されている。この室内ユニット(1)では、吹出口(14)が、化粧パネル(11)の各辺に沿う部分だけでなく、コーナー部にも形成されている。また、化粧パネル(11)には、後述する第1、第2塵埃貯留容器(60,90)から塵埃を除去するための挿入口(18)が形成されている。 The suction panel (13) and the air outlet (14) are formed in the decorative panel (11). The suction port (13) is formed in a rectangular shape, and is arranged at the center of the decorative panel (11). A slit-like suction grill (12) is fitted into the suction port (13). On the other hand, the air outlet (14) is formed so as to surround the entire periphery of the air inlet (13). The blower outlet (14) is formed along the outer periphery of the decorative panel (11). In the indoor unit (1), the air outlet (14) is formed not only in the portion along each side of the decorative panel (11) but also in the corner portion. Further, the decorative panel (11) is formed with an insertion port (18) for removing dust from first and second dust storage containers (60, 90) described later.
  上側ケーシング(10a)の内部には、室内熱交換器(22)、ドレンパン(23)、及び室内ファン(21)が設けられている。また、図4に示すように、下側ケーシング(10b)の内部には、エアフィルタ(30)、フィルタ駆動部(40)、ブラシユニット(50)、第1塵埃貯留容器(60)、及び第2塵埃貯留容器(90)が設けられている。フィルタ駆動部(40)及びブラシユニット(50)は塵埃除去手段を構成し、第1塵埃貯留容器(60)及び第2塵埃貯留容器(90)は塵埃貯留手段を構成している。 In the upper casing (10a), an indoor heat exchanger (22), a drain pan (23), and an indoor fan (21) are provided. As shown in FIG. 4, the lower casing (10b) includes an air filter (30), a filter driving unit (40), a brush unit (50), a first dust container (60), A two dust container (90) is provided. The filter drive unit (40) and the brush unit (50) constitute dust removing means, and the first dust storage container (60) and the second dust storage container (90) constitute dust storing means.
  室内ファン(21)は、いわゆるターボファンである。室内ファン(21)は、上側ケーシング(10a)の中央付近に配置されている。室内ファン(21)は、ファンモータ(21a)と羽根車(21b)とを備えている。ファンモータ(21a)は、上側ケーシング(10a)の天板に固定されている。羽根車(21b)は、ファンモータ(21a)の回転軸に連結されている。室内ファン(21)の下側には、吸込口(13)に連通するベルマウス(24)が設けられている。室内ファン(21)は、ベルマウス(24)を介して下側から吸い込んだ空気を周方向へ吹き出すように構成されている。 The indoor fan (21) is a so-called turbo fan. The indoor fan (21) is disposed near the center of the upper casing (10a). The indoor fan (21) includes a fan motor (21a) and an impeller (21b). The fan motor (21a) is fixed to the top plate of the upper casing (10a). The impeller (21b) is connected to the rotation shaft of the fan motor (21a). A bell mouth (24) communicating with the suction port (13) is provided below the indoor fan (21). The indoor fan (21) is configured to blow out air sucked from below through the bell mouth (24) in the circumferential direction.
  室内熱交換器(22)は、クロスフィン式のフィン・アンド・チューブ型熱交換器により構成されている。室内熱交換器(22)は、平面視でロ字状に形成され、室内ファン(21)の周囲を囲うように配置されている。室内熱交換器(22)では、室内ファン(21)によって送られる室内空気と冷媒との間で熱交換が行われる。 The indoor heat exchanger (22) is a cross-fin type fin-and-tube heat exchanger. The indoor heat exchanger (22) is formed in a square shape in plan view, and is disposed so as to surround the periphery of the indoor fan (21). In the indoor heat exchanger (22), heat is exchanged between the indoor air sent by the indoor fan (21) and the refrigerant.
  ドレンパン(23)は、室内熱交換器(22)の下側に設けられている。ドレンパン(23)は、室内熱交換器(22)において空気中の水分が凝縮して生じるドレン水を受けるためのものである。ドレンパン(23)には、ドレン水を排水するためのドレンポンプが設けられている(図示省略)。 The drain pan (23) is provided under the indoor heat exchanger (22). The drain pan (23) is for receiving drain water generated by condensation of moisture in the air in the indoor heat exchanger (22). The drain pan (23) is provided with a drain pump for draining drain water (not shown).
  エアフィルタ(30)は、吸込口(13)からベルマウス(24)へ向かう空気中の塵埃を捕捉するためのものである。エアフィルタ(30)は円板状に形成されている。エアフィルタ(30)は、下側ケーシング(10b)の上端部の仕切板(25)に形成された円形の通気口を覆うように取り付けられている。エアフィルタ(30)は、仕切板(25)の通気口を4分割するリブ(図示省略)の中心に、回転自在に取り付けられている。エアフィルタ(30)の外周面には、フィルタ側ギア部が形成されている(図示省略)。 The air filter (30) is for capturing dust in the air from the suction port (13) toward the bell mouth (24). The air filter (30) is formed in a disk shape. The air filter (30) is attached so as to cover a circular vent formed in the partition plate (25) at the upper end of the lower casing (10b). The air filter (30) is rotatably attached to the center of a rib (not shown) that divides the vent hole of the partition plate (25) into four parts. A filter-side gear portion is formed on the outer peripheral surface of the air filter (30) (not shown).
  フィルタ駆動部(40)は、モータと、モータによって回転するモータ側ギア部とを備えている。フィルタ駆動部(40)は、モータ側ギア部がフィルタ側ギア部と噛み合うように、エアフィルタ(30)の外側に設けられている。フィルタ駆動部(40)は、後述するブラシユニット(50)によってエアフィルタ(30)から塵埃を除去する清掃運転の際に、モータの回転によってエアフィルタ(30)を回転させる。 The filter drive unit (40) includes a motor and a motor-side gear unit that is rotated by the motor. The filter drive part (40) is provided outside the air filter (30) so that the motor side gear part meshes with the filter side gear part. The filter drive unit (40) rotates the air filter (30) by the rotation of the motor during a cleaning operation in which dust is removed from the air filter (30) by a brush unit (50) described later.
  ブラシユニット(50)は、エアフィルタ(30)に捕捉された塵埃を除去するためのものである。ブラシユニット(50)は、後述する第1塵埃貯留容器(60)に取り付けられている。ブラシユニット(50)は、エアフィルタ(30)に接触する回転ブラシ(51)と、回転ブラシ(51)を回転させるブラシ駆動部(53)とを備えている。ここで、回転ブラシ(51)の表面はブラシ面と非ブラシ面とに分けられている。ブラシユニット(50)では、上記清掃運転の際に、ブラシ駆動部(53)が回転ブラシ(51)を回転させる。 The brush unit (50) is for removing dust trapped by the air filter (30). The brush unit (50) is attached to a first dust container (60) described later. The brush unit (50) includes a rotating brush (51) that contacts the air filter (30), and a brush drive unit (53) that rotates the rotating brush (51). Here, the surface of the rotating brush (51) is divided into a brush surface and a non-brush surface. In the brush unit (50), the brush driving unit (53) rotates the rotating brush (51) during the cleaning operation.
  第1塵埃貯留容器(60)は、図5に示すように、上側部分がブラシユニット(50)を収納する収納部(61)になり、下側部分がエアフィルタ(30)から除去された塵埃が溜まる貯留部(62)となっている。貯留部(62)では、後述する発光ダイオード(72)とフォトトランジスタ(73)に対面する部分に、透明の部材により構成された第1窓部(64)及び第2窓部(65)が設けられている。貯留部(62)には、回転ブラシ(51)によってエアフィルタ(30)から掻き落とされた塵埃や、収納部(61)に設けられた清掃用ブラシ(52)によって回転ブラシ(51)から掻き落とされた塵埃が溜まるように構成されている。 As shown in FIG. 5, in the first dust container (60), the upper part is a storage part (61) for storing the brush unit (50), and the lower part is dust removed from the air filter (30). It is a storage part (62) where water accumulates. In the storage part (62), a first window part (64) and a second window part (65) made of a transparent member are provided in a part facing a light emitting diode (72) and a phototransistor (73) described later. It has been. Dust scraped from the air filter (30) by the rotating brush (51) and the cleaning brush (52) provided in the storage unit (61) are scraped from the rotating brush (51) to the reservoir (62). It is configured to collect the dust that has been dropped.
  第1塵埃貯留容器(60)には、図1に示すように、内部に第1室と第2室とが形成されたダンパボックス(81)が接続されている。ダンパボックス(81)には、第1室と第2室との間の連通口を開閉するダンパ(82)が設けられている。第1室の上面には、ベルマウス(24)の上側に開口する導入用ダクト(86)が接続されている。ダンパ(82)を開状態に設定した状態で室内ファン(21)を運転させると、室内ファン(21)の吹出空気が導入用ダクト(86)及びダンパボックス(81)を通じて第1塵埃貯留容器(60)に流入するように構成されている。そして、この流入する吹出空気により、第1塵埃貯留容器(60)内の塵埃が第2塵埃貯留容器(90)へ搬送される。なお、ダンパ(82)は、空調運転中は閉状態に設定される。 As shown in FIG. 1, a damper box (81) having a first chamber and a second chamber formed therein is connected to the first dust container (60). The damper box (81) is provided with a damper (82) that opens and closes the communication port between the first chamber and the second chamber. An introduction duct (86) that opens above the bell mouth (24) is connected to the upper surface of the first chamber. When the indoor fan (21) is operated with the damper (82) set to the open state, the air blown from the indoor fan (21) is passed through the introduction duct (86) and the damper box (81) to the first dust container ( 60). And the dust in a 1st dust storage container (60) is conveyed by this inflowing blowing air to a 2nd dust storage container (90). The damper (82) is set to a closed state during the air conditioning operation.
  また、ダンパボックス(81)の第2室の下面には、挿入口(18)に連通する吸引用ダクト(87)が接続されている。挿入口(18)に掃除機の塵埃の吸入部を接続して掃除機を運転させると、第2塵埃貯留容器(90)及び第1塵埃貯留容器(60)の塵埃が掃除機によって吸引される。 Also, a suction duct (87) communicating with the insertion port (18) is connected to the lower surface of the second chamber of the damper box (81). When the dust suction part of the cleaner is connected to the insertion port (18) and the cleaner is operated, the dust in the second dust container (90) and the first dust container (60) is sucked by the cleaner. .
  第2塵埃貯留容器(90)は、第1塵埃貯留容器(60)とともにエアフィルタ(30)の下側に配置され、搬送用ダクト(88)を介して第1塵埃貯留容器(60)に接続されている。第2塵埃貯留容器(90)には、図2に示すように、排気口(91)が形成されている。排気口(91)には、フィルタ(92)が取り付けられている。排気口(91)は、下側ケーシング(10b)の排気通路(19)を通じて、ケーシング(20)の外部に連通している。 The second dust storage container (90) is disposed below the air filter (30) together with the first dust storage container (60), and is connected to the first dust storage container (60) via the transfer duct (88). Has been. As shown in FIG. 2, the second dust container (90) has an exhaust port (91). A filter (92) is attached to the exhaust port (91). The exhaust port (91) communicates with the outside of the casing (20) through the exhaust passage (19) of the lower casing (10b).
  本実施形態では、図5に示すように、第1塵埃貯留容器(60)の貯留部(62)における塵埃の貯留量を検知するための検知センサ(検知手段)(71)が設けられている。この検知センサ(71)は、赤外線センサにより構成されている。検知センサ(71)は、第1塵埃貯留容器(60)の貯留部(62)に取り付けられたセンサボックス(70)に収容されている。 In this embodiment, as shown in FIG. 5, a detection sensor (detection means) (71) is provided for detecting the amount of dust stored in the storage section (62) of the first dust storage container (60). . The detection sensor (71) is an infrared sensor. The detection sensor (71) is accommodated in the sensor box (70) attached to the storage part (62) of the first dust storage container (60).
  検知センサ(71)は、同じ高さに設置された一対の発光ダイオード(発光部)(72)及びフォトトランジスタ(受光部)(73)を備えている。発光ダイオード(72)及びフォトトランジスタ(73)は、貯留部(62)の中央の高さよりも少し下の高さに設けられている。 The detection sensor (71) includes a pair of light emitting diodes (light emitting units) (72) and phototransistors (light receiving units) (73) installed at the same height. The light emitting diode (72) and the phototransistor (73) are provided at a height slightly lower than the central height of the storage portion (62).
  検知センサ(71)では、発光ダイオード(72)が発した光が、第1窓部(64)と第2窓部(65)を順番に透過し、その透過した光の光度がフォトトランジスタ(73)により検出される。そして、この検出された光度に基づいて、該検知センサ(71)に内蔵された貯留量検出部(図示なし)が、貯留部(62)における塵埃の貯留量を検出する。 In the detection sensor (71), the light emitted from the light emitting diode (72) is sequentially transmitted through the first window (64) and the second window (65), and the intensity of the transmitted light is determined by the phototransistor (73). ) Is detected. Based on the detected light intensity, a storage amount detection unit (not shown) built in the detection sensor (71) detects the amount of dust stored in the storage unit (62).
  具体的に、塵埃の貯留量が少ないと、貯留部(62)において第1窓部(64)から第2窓部(65)への光の透過率(透過量)が高くなり、検出される光度が高くなる。逆に、塵埃の貯留量が多いと、貯留部(62)において第1窓部(64)から第2窓部(65)への光の透過率(透過量)が低くなり、検出される光度が低くなる。 Specifically, when the amount of stored dust is small, the light transmittance (transmission amount) from the first window portion (64) to the second window portion (65) in the storage portion (62) increases and is detected. Brightness increases. Conversely, if the amount of stored dust is large, the transmittance (transmission amount) of light from the first window portion (64) to the second window portion (65) in the storage portion (62) decreases, and the detected light intensity Becomes lower.
  -制御部の構成-
  本実施形態の室内ユニット(1)には、空調運転及びエアフィルタ(30)の清掃運転を制御する制御部(35)が設けられている。この制御部(35)は、下側ケーシング(10b)が収容された制御ボックス(図示なし)内の制御基板(31)に設けられ、出力判定部(塵埃量判定部)(38)と清掃運転制御部(制御手段)(39)とを備えている。また、図6に示すように、上記制御部(35)にはリモコン(48)が、上記出力判定部(38)には検知センサ(71)が、上記清掃運転制御部(39)には掃除サイン出力部(33,34,56)がそれぞれ電気的に接続されている。
-Control unit configuration-
The indoor unit (1) of the present embodiment is provided with a control unit (35) that controls the air conditioning operation and the cleaning operation of the air filter (30). The control unit (35) is provided on a control board (31) in a control box (not shown) in which the lower casing (10b) is accommodated, and is connected to an output determination unit (dust amount determination unit) (38) and a cleaning operation. And a control unit (control means) (39). As shown in FIG. 6, the control unit (35) includes a remote control (48), the output determination unit (38) includes a detection sensor (71), and the cleaning operation control unit (39) performs cleaning. The sign output units (33, 34, 56) are electrically connected to each other.
  上記出力判定部(38)は、検知センサ(71)で検出された光の光度に基づいて、貯留部(62)が塵埃で満杯になったことを知らせる検出信号を清掃運転制御部(39)へ出力するか否かを判定するように構成されている。具体的には、検出信号を出力するか否かを判定するための判定光度が予め設定されている。出力判定部(38)は、上記検出光度が判定光度より少なければ検出信号を出力し、上記検出光度が判定光度以上であれば検出信号を出力しない。 The output determination unit (38) generates a detection signal indicating that the storage unit (62) is filled with dust based on the light intensity detected by the detection sensor (71). The cleaning operation control unit (39) It is comprised so that it may determine whether it outputs to. Specifically, a determination light intensity for determining whether or not to output a detection signal is set in advance. The output determination unit (38) outputs a detection signal if the detected light intensity is less than the determination light intensity, and does not output a detection signal if the detection light intensity is equal to or greater than the determination light intensity.
  上記清掃運転制御部(39)は、上記出力判定部(38)からの検出信号が入力されると、後述するエアフィルタ(30)の清掃運転を禁止するように構成されている。また、上記清掃運転制御部(39)は、エアフィルタ(30)の清掃運転を禁止している間、第1、第2塵埃貯留容器(60,90)からの塵埃の除去が必要であることを知らせるための掃除サインを上記掃除サイン出力部(33,34,56)に出力するように制御する。 The cleaning operation control unit (39) is configured to prohibit a cleaning operation of an air filter (30) described later when a detection signal from the output determination unit (38) is input. Further, the cleaning operation control unit (39) needs to remove dust from the first and second dust storage containers (60, 90) while the cleaning operation of the air filter (30) is prohibited. Control is performed to output a cleaning sign for informing the cleaning sign output unit (33, 34, 56).
  上記掃除サイン出力部(33,34,56)は、化粧パネル(11)の点灯部(33)と、使用者が空調運転及び清掃運転のオン/オフ等を入力するリモコン(48)の液晶表示部(34)及びリモコン点灯部(56)とから構成されている。上記掃除サインは、この点灯部(33)、液晶表示部(34)及びリモコン点灯部(56)に表示される。 The cleaning sign output unit (33, 34, 56) is a liquid crystal display of the lighting unit (33) of the decorative panel (11) and the remote control (48) for the user to input on / off of air conditioning operation and cleaning operation, etc. Part (34) and a remote control lighting part (56). The cleaning sign is displayed on the lighting part (33), the liquid crystal display part (34) and the remote control lighting part (56).
  -運転動作-
  次に、上記室内ユニット(1)における運転動作について説明する。室内ユニット(1)は、冷暖房を行う通常運転と、エアフィルタ(30)の清掃を行うフィルタ清掃運転とが切換可能に構成されている。また、上記フィルタ清掃運転を禁止するフィルタ清掃禁止動作も行う。
-Driving operation-
Next, the operation of the indoor unit (1) will be described. The indoor unit (1) is configured to be switchable between a normal operation for performing air conditioning and a filter cleaning operation for cleaning the air filter (30). Further, a filter cleaning prohibiting operation for prohibiting the filter cleaning operation is also performed.
  〈通常運転〉
  通常運転では、上記ブラシユニット(50)の回転ブラシ(51)を回転させてそのブラシ面を清掃用ブラシ(52)側に位置させる。つまり、回転ブラシ(51)のブラシ面がエアフィルタ(30)に接触しない位置まで回転ブラシ(51)を回転させて、回転ブラシ(51)の非ブラシ面をエアフィルタ(30)に対面させる。また、ダンパボックス(81)のダンパ(82)が閉じられる。なお、エアフィルタ(30)は停止状態である。
<Normal operation>
In normal operation, the rotating brush (51) of the brush unit (50) is rotated so that its brush surface is positioned on the cleaning brush (52) side. That is, the rotating brush (51) is rotated to a position where the brush surface of the rotating brush (51) does not contact the air filter (30), and the non-brush surface of the rotating brush (51) faces the air filter (30). Further, the damper (82) of the damper box (81) is closed. The air filter (30) is in a stopped state.
  この状態において、室内ファン(21)が駆動される。そうすると、室内ユニット(1)では、吸込口(13)から吸い込まれた室内空気がエアフィルタ(30)を通過してベルマウス(24)へ流入する。空気がエアフィルタ(30)を通過する際、空気中の塵埃がエアフィルタ(30)に捕捉される。ベルマウス(24)に流入した空気は室内ファン(21)から吹き出される。この吹出空気は、室内熱交換器(22)の冷媒と熱交換して冷却または加熱された後、各吹出口(14)から室内へ供給される。これにより、室内の冷房または暖房が行われる。この運転では、ダンパボックス(81)のダンパ(82)が閉じられているため、室内ファン(21)の吹出空気がダンパボックス(81)を通じて第1塵埃貯留容器(60)へ導入されることはない。 In this state, the indoor fan (21) is driven. Then, in the indoor unit (1), the indoor air sucked from the suction port (13) passes through the air filter (30) and flows into the bell mouth (24). When air passes through the air filter (30), dust in the air is captured by the air filter (30). The air flowing into the bell mouth (24) is blown out from the indoor fan (21). The blown air is cooled or heated by exchanging heat with the refrigerant in the indoor heat exchanger (22), and then supplied into the room from each outlet (14). Thereby, indoor cooling or heating is performed. In this operation, since the damper (82) of the damper box (81) is closed, the air blown from the indoor fan (21) is not introduced into the first dust container (60) through the damper box (81). Absent.
  このように、通常運転では、回転ブラシ(51)のブラシ面とエアフィルタ(30)とが非接触状態となる。つまり、ブラシ面がエアフィルタ(30)から離隔される。したがって、ブラシ面のエアフィルタ(30)に接触し続けることによる劣化を防止することができる。これにより、回転ブラシ(51)の耐久性が向上する。 Thus, in normal operation, the brush surface of the rotating brush (51) and the air filter (30) are in a non-contact state. That is, the brush surface is separated from the air filter (30). Therefore, it is possible to prevent deterioration due to continuous contact with the air filter (30) on the brush surface. Thereby, durability of a rotating brush (51) improves.
  〈フィルタ清掃運転〉
  フィルタ清掃運転では、冷媒回路において圧縮機が停止されて冷媒が循環しない状態となる。このフィルタ清掃運転では、「塵埃除去動作」と「ブラシ清掃動作」と「塵埃搬送動作」と「塵埃排出動作」とが切換可能に構成されている。
<Filter cleaning operation>
In the filter cleaning operation, the compressor is stopped in the refrigerant circuit, and the refrigerant does not circulate. In this filter cleaning operation, “dust removal operation”, “brush cleaning operation”, “dust transport operation”, and “dust discharge operation” are switchable.
  「塵埃除去動作」は、エアフィルタ(30)に捕捉された塵埃を除去する動作である。「ブラシ清掃動作」は、回転ブラシ(51)に捕捉された塵埃を除去する動作である。「塵埃搬送動作」は、第1塵埃貯留容器(60)から第2塵埃貯留容器(90)に塵埃を搬送する動作である。「塵埃排出動作」は、第2塵埃貯留容器(90)からケーシング(10)外へ塵埃を排出する動作である。 “Dust removal operation” is an operation to remove dust trapped in the air filter (30). The “brush cleaning operation” is an operation for removing dust trapped on the rotating brush (51). The “dust transfer operation” is an operation of transferring dust from the first dust container (60) to the second dust container (90). The “dust discharging operation” is an operation for discharging dust from the second dust container (90) to the outside of the casing (10).
  本実施形態では、「塵埃除去動作」と「ブラシ清掃動作」とが交互に行われる。先ず「塵埃除去動作」では、室内ファン(21)は運転させたままで、回転ブラシ(51)を回転させてそのブラシ面をエアフィルタ(30)に接触させる。こうすると、室内ファン(21)により、エアフィルタ(30)に塵埃を保持させた状態で塵埃を取り除くことができる。尚、場合によっては、室内ファン(21)を停止させた状態で、回転ブラシ(51)を回転させてそのブラシ面をエアフィルタ(30)に接触させてもよい。 In this embodiment, “dust removal operation” and “brush cleaning operation” are performed alternately. First, in the “dust removal operation”, the rotary fan (51) is rotated and the brush surface is brought into contact with the air filter (30) while the indoor fan (21) is operated. Thus, the dust can be removed by the indoor fan (21) while the air filter (30) holds the dust. In some cases, with the indoor fan (21) stopped, the rotating brush (51) may be rotated to bring the brush surface into contact with the air filter (30).
  このように、回転ブラシ(51)のブラシ面をエアフィルタ(30)に接触させた状態において、エアフィルタ(30)が、室内ユニット(1)の下側から見て、反時計回りに回転する。これにより、回転ブラシ(51)のブラシ面の毛並みに対向するようにエアフィルタ(30)が移動する。なお、このとき回転ブラシ(51)は停止させたままである。 In this way, the air filter (30) rotates counterclockwise when viewed from the lower side of the indoor unit (1) in a state where the brush surface of the rotating brush (51) is in contact with the air filter (30). . As a result, the air filter (30) moves so as to face the bristles of the brush surface of the rotating brush (51). At this time, the rotating brush (51) remains stopped.
  そうすると、エアフィルタ(30)の塵埃が回転ブラシ(51)のブラシ面に捕捉される。そして、フィルタ駆動部(40)に設けられたリミットスイッチが作動し、エアフィルタ(30)は所定角度だけ回転して停止する。 Then, the dust of the air filter (30) is captured on the brush surface of the rotating brush (51). And the limit switch provided in the filter drive part (40) act | operates, and an air filter (30) rotates only a predetermined angle and stops.
  これにより、エアフィルタ(30)において回転ブラシ(51)のブラシ面を通過した領域の塵埃が除去される。ここで、ブラシ面の毛並みがエアフィルタ(30)の回転方向(移動方向)に対向して傾斜しているため、エアフィルタ(30)の塵埃がブラシ面によって容易に掻き取られる。よって、回転ブラシ(51)による塵埃の除去効率が向上する。エアフィルタ(30)が停止すると、「塵埃除去動作」から「ブラシ清掃動作」へ切り換えられる。 This removes dust in the area that has passed through the brush surface of the rotating brush (51) in the air filter (30). Here, since the bristles of the brush surface are inclined to oppose the rotation direction (movement direction) of the air filter (30), dust on the air filter (30) is easily scraped off by the brush surface. Therefore, the dust removal efficiency by the rotating brush (51) is improved. When the air filter (30) stops, the “dust removal operation” is switched to the “brush cleaning operation”.
  「ブラシ清掃動作」では、引き続き室内ファン(21)が停止された状態で、先ず回転ブラシ(51)が回転する。その際、回転ブラシ(51)は、ブラシ面に塵埃を捕捉したまま回転する。また、回転ブラシ(51)および清掃用ブラシ(52)のブラシ同士が接触しながら、回転ブラシ(51)が回転する。そして、回転ブラシ(51)は、所定の回転角度だけ回転すると停止する。 In “Brush cleaning operation”, the rotating brush (51) first rotates with the indoor fan (21) stopped. At that time, the rotating brush (51) rotates while dust is captured on the brush surface. Further, the rotating brush (51) rotates while the brushes of the rotating brush (51) and the cleaning brush (52) are in contact with each other. The rotating brush (51) stops when it rotates by a predetermined rotation angle.
  続いて、回転ブラシ(51)は、上記とは逆回りに回転する。そうすると、回転ブラシ(51)のブラシ面に捕捉されていた塵埃が清掃用ブラシ(52)によって除去される。これは、清掃用ブラシ(52)の毛並みが下向き、即ち毛並みが回転ブラシ(51)の回転方向に対向する向きに傾斜するように形成されているため、回転ブラシ(51)のブラシ面から塵埃が掻き取られる。 Subsequently, the rotating brush (51) rotates in the reverse direction. Then, the dust trapped on the brush surface of the rotating brush (51) is removed by the cleaning brush (52). This is because the bristles of the cleaning brush (52) are inclined downward, that is, the bristles are inclined in a direction opposite to the rotation direction of the rotating brush (51). Is scraped off.
  また、双方のブラシ同士が接触することによって清掃用ブラシ(52)が後方へ押されるが、上記収納部(61)の内壁に取り付けられたバネ部によって本体部(52a)が回転ブラシ(51)側へ付勢される。これにより、ブラシ同士が離隔することはなく、清掃用ブラシ(52)が適切に回転ブラシ(51)に押し付けられる。したがって、回転ブラシ(51)のブラシ面から塵埃がより確実に除去される。以上により、清掃用ブラシ(52)に塵埃が捕捉される。回転ブラシ(51)は、元の状態まで回転して停止する。 Further, the cleaning brush (52) is pushed rearward when the two brushes come into contact with each other, but the main body (52a) is rotated by the spring (51) attached to the inner wall of the storage part (61). It is urged to the side. Thus, the brushes are not separated from each other, and the cleaning brush (52) is appropriately pressed against the rotating brush (51). Therefore, dust is more reliably removed from the brush surface of the rotating brush (51). Thus, dust is captured by the cleaning brush (52). The rotating brush (51) rotates to the original state and stops.
  続いて、回転ブラシ(51)は、再び所定の回転角度だけ回転する。そうすると、清掃用ブラシ(52)に捕捉されていた塵埃が回転ブラシ(51)のブラシ面によって掻き取られ、第1塵埃貯留容器(60)の貯留部(62)に落下する。これは、回転ブラシ(51)のブラシ面の毛並みが回転方向に向かって傾斜しているため、清掃用ブラシ(52)から塵埃が確実に掻き取られる。その際も、上記と同様に、上記バネ部によって清掃用ブラシ(52)が回転ブラシ(51)に適切に押し付けられるため、清掃用ブラシ(52)から塵埃がより確実に除去される。 Subsequently, the rotating brush (51) rotates again by a predetermined rotation angle. Then, the dust captured by the cleaning brush (52) is scraped off by the brush surface of the rotary brush (51) and falls to the storage part (62) of the first dust storage container (60). This is because the bristles of the brush surface of the rotating brush (51) are inclined in the rotating direction, so that dust is reliably scraped off from the cleaning brush (52). At this time, similarly to the above, since the cleaning brush (52) is appropriately pressed against the rotating brush (51) by the spring portion, dust is more reliably removed from the cleaning brush (52).
  以上により、回転ブラシ(51)に捕捉された塵埃が除去され、第1塵埃貯留容器(60)の貯留部(62)に貯留される。その後、回転ブラシ(51)は再び逆周りに回転して元の状態に戻り、「ブラシ清掃動作」が一旦終了する。 Thus, the dust trapped on the rotating brush (51) is removed and stored in the storage part (62) of the first dust storage container (60). Thereafter, the rotating brush (51) rotates again in the reverse direction to return to the original state, and the “brush cleaning operation” is temporarily ended.
  「ブラシ清掃動作」が終了すると、再び上述した「塵埃除去動作」が行われる。つまり、再びエアフィルタ(30)が回転され、上記リミットスイッチが再び作動するとエアフィルタ(30)が停止する。これにより、エアフィルタ(30)において回転ブラシ(51)のブラシ面を通過した領域の塵埃が回転ブラシ(51)のブラシ面に捕捉される。 When the “brush cleaning operation” is completed, the “dust removal operation” described above is performed again. That is, the air filter (30) is rotated again, and when the limit switch is actuated again, the air filter (30) stops. Thereby, the dust of the area | region which passed the brush surface of the rotating brush (51) in an air filter (30) is capture | acquired by the brush surface of a rotating brush (51).
  このように、「塵埃除去動作」と「ブラシ清掃動作」とが交互に繰り返される。その結果、エアフィルタ(30)において所定の領域毎に塵埃が除去されていく。そして、エアフィルタ(30)の全領域において塵埃が除去されると、「塵埃除去動作」および「ブラシ清掃動作」が完全に終了する。例えば、リミットスイッチ(44)が所定回数作動すると、エアフィルタ(30)が1回転したと判断して上記動作が終了する。 In this way, “dust removal operation” and “brush cleaning operation” are alternately repeated. As a result, dust is removed for each predetermined region in the air filter (30). When the dust is removed in the entire area of the air filter (30), the “dust removal operation” and the “brush cleaning operation” are completely completed. For example, when the limit switch (44) is actuated a predetermined number of times, it is determined that the air filter (30) has made one rotation, and the above operation ends.
  「塵埃搬送動作」では、回転ブラシ(51)とエアフィルタ(30)とが共に停止状態になる。また、ダンパボックス(81)のダンパ(82)が開状態になる。この状態において、室内ファン(21)が駆動される。室内ファン(21)の吹出空気は、導入用ダクト(86)およびダンパボックス(81)を順に介して第1塵埃貯留容器(60)へ導入される。これにより、第1塵埃貯留容器(60)の塵埃が空気と共に搬送用ダクト(88)を介して第2塵埃貯留容器(90)へ搬送される。 In the “dust transfer operation”, both the rotating brush (51) and the air filter (30) are stopped. In addition, the damper (82) of the damper box (81) is opened. In this state, the indoor fan (21) is driven. The air blown from the indoor fan (21) is introduced into the first dust container (60) through the introduction duct (86) and the damper box (81) in this order. As a result, the dust in the first dust container (60) is transferred together with the air to the second dust container (90) via the transfer duct (88).
  また、本実施形態のフィルタ清掃運転では、所定条件によって「塵埃排出動作」が行われる。例えば、「塵埃搬送動作」が所定回数(所定時間)行われると、「塵埃排出動作」が行われる。または、ユーザーによるリモコン操作によって行うようにしてもよい。尚、この動作は、上述した掃除サインが表示された場合にも行われる。 Also, in the filter cleaning operation of the present embodiment, “dust removal operation” is performed according to predetermined conditions. For example, when the “dust transfer operation” is performed a predetermined number of times (predetermined time), the “dust discharge operation” is performed. Or you may make it perform by remote control operation by a user. This operation is also performed when the above-described cleaning sign is displayed.
  「塵埃排出動作」では、上述した「塵埃搬送動作」と同様に、回転ブラシ(51)とエアフィルタ(30)とが共に停止状態になる。また、ダンパボックス(81)のダンパ(82)が閉状態になる。この状態において、ユーザーによって掃除機のホースが化粧パネル(11)の挿入口(18)に挿入される。この吸引動作により、第2塵埃貯留容器(90)の塵埃が搬送用ダクト(88)、第1塵埃貯留容器(60)および吸引用ダクト(87)を順に介して掃除機へ吸い込まれる。その際、第1塵埃貯留容器(60)内の塵埃も吸引用ダクト(87)を介して掃除機へ吸い込まれる。その結果、第2塵埃貯留容器(90)および第1塵埃貯留容器(60)の塵埃がケーシング(10)外へ排出される。 In the “dust discharge operation”, both the rotating brush (51) and the air filter (30) are stopped, as in the “dust transfer operation” described above. Further, the damper (82) of the damper box (81) is closed. In this state, the user inserts the hose of the vacuum cleaner into the insertion port (18) of the decorative panel (11). By this suction operation, the dust in the second dust container (90) is sucked into the cleaner through the transfer duct (88), the first dust container (60), and the suction duct (87) in this order. At that time, the dust in the first dust container (60) is also sucked into the cleaner through the suction duct (87). As a result, the dust in the second dust container (90) and the first dust container (60) is discharged out of the casing (10).
  〈フィルタ清掃運転の禁止動作〉
  上記フィルタ清掃運転により、第1塵埃貯留容器(60)の貯留部(62)が塵埃で満杯になると、上記検知センサ(71)により、その状態が検知される。上記出力判定部(38)では、検知センサ(71)で検出された光の光度に基づいて、貯留部(62)が塵埃で満杯になったことを知らせる検出信号を清掃運転制御部(39)へ出力する。
<Prohibited operation of filter cleaning operation>
When the storage part (62) of the first dust storage container (60) is filled with dust by the filter cleaning operation, the state is detected by the detection sensor (71). In the output determination unit (38), based on the light intensity detected by the detection sensor (71), a cleaning operation control unit (39) notifies a detection signal that the storage unit (62) is filled with dust. Output to.
  上記清掃運転制御部(39)は、上記出力判定部(38)からの検出信号が入力されると、エアフィルタ(30)の清掃運転を禁止する。また、上記清掃運転制御部(39)は、エアフィルタ(30)の清掃運転を禁止している間、上記掃除サイン出力部(33,34,56)に第1、第2塵埃貯留容器(60,90)からの塵埃の除去が必要であることを知らせるための掃除サインを出力するように制御する。 The cleaning operation control unit (39) prohibits the cleaning operation of the air filter (30) when the detection signal from the output determination unit (38) is input. The cleaning operation control unit (39) prohibits the cleaning operation of the air filter (30) while the first and second dust storage containers (60) are connected to the cleaning sign output unit (33, 34, 56). , 90) is controlled so as to output a cleaning sign for informing that it is necessary to remove dust.
  尚、本実施形態では、検知センサ(71)が第1塵埃貯留容器(60)に設けられている。これは、仮に第2塵埃貯留容器(90)に検知センサ(71)が設けられたとすると、上記制御部(35)が、第1塵埃貯留容器(60)が満杯であるにもかかわらずエアフィルタの清掃運転を継続するという誤作動を起こすことが考えられるからである。 In the present embodiment, the detection sensor (71) is provided in the first dust container (60). Assuming that the detection sensor (71) is provided in the second dust container (90), the control unit (35) is configured so that the air filter is used even though the first dust container (60) is full. This is because a malfunction may be caused in that the cleaning operation is continued.
  つまり、何らかの要因で搬送用ダクト(88)が閉塞してしまうと、第2塵埃貯留容器(90)に送られるはずの塵埃が第1塵埃貯留容器(60)に貯留してしまう。これにより、仮に上記第2塵埃貯留容器(90)に検知センサ(71)が設けられた場合、該検知センサ(71)は第1塵埃貯留容器(60)が塵埃で満杯であることを検知できないことが考えられる。したがって、上記検知センサ(71)を第1塵埃貯留容器(60)に設けることにより、上記制御部(35)が、第1塵埃貯留容器(60)が満杯であるにもかかわらずエアフィルタ(30)の清掃運転を継続するという誤作動を起こすのを防ぐことができる。 That is, if the transport duct (88) is blocked for some reason, the dust that should be sent to the second dust container (90) is stored in the first dust container (60). Thereby, if the detection sensor (71) is provided in the second dust storage container (90), the detection sensor (71) cannot detect that the first dust storage container (60) is full of dust. It is possible. Therefore, by providing the detection sensor (71) in the first dust container (60), the control unit (35) allows the air filter (30) to be used regardless of whether the first dust container (60) is full. ) Can be prevented from malfunctioning by continuing the cleaning operation.
  -実施形態の効果-
  本実施形態によれば、上記出力判定部(38)から上記清掃運転制御部(39)へ検出信号が入力されると、エアフィルタ(30)の清掃運転を禁止するように構成されている。つまり、従来の室内ユニットでは、タイマによる運転積算時間から上記第1、第2塵埃貯留容器(60,90)の塵埃の量を推定し、この推定値に基づいてエアフィルタ(30)の清掃運転を禁止させていたが、本実施形態では、上記検知センサ(71)で上記第1、第2塵埃貯留容器(60,90)の塵埃の量を直接的に検知し、この検知した値に基づいてエアフィルタ(30)の清掃運転を禁止することができる。
-Effects of the embodiment-
According to this embodiment, when the detection signal is input from the output determination unit (38) to the cleaning operation control unit (39), the cleaning operation of the air filter (30) is prohibited. That is, in the conventional indoor unit, the amount of dust in the first and second dust storage containers (60, 90) is estimated from the accumulated operation time by the timer, and the cleaning operation of the air filter (30) is performed based on the estimated value. In this embodiment, the detection sensor (71) directly detects the amount of dust in the first and second dust storage containers (60, 90), and based on this detected value. Thus, the cleaning operation of the air filter (30) can be prohibited.
  したがって、本実施形態の室内ユニットは、空気調和装置の運転積算時間を計測するタイマを設ける必要がなく、タイマのリセット動作も必要がない。また、ユーザが、第1、第2塵埃貯留容器(60,90)内の塵埃を排出して、上記塵埃量判定部(38)から検出信号が出力されないようにしなければ、禁止されたエアフィルタ(30)の清掃運転を再開することができない。 Therefore, the indoor unit of the present embodiment does not require a timer for measuring the accumulated operation time of the air conditioner, and does not require a timer reset operation. In addition, if the user discharges the dust in the first and second dust storage containers (60, 90) so that the detection signal is not output from the dust amount determination unit (38), the prohibited air filter is prohibited. (30) Cleaning operation cannot be resumed.
  以上により、従来とは違い、第1、第2塵埃貯留容器(60,90)に塵埃が十分に貯留されているにもかかわらずエアフィルタ(30)の清掃運転を許可してしまうことがなく、エアフィルタ(30)の清掃運転により除去された塵埃を貯留する第1、第2塵埃貯留容器(60,90)から塵埃が溢れ出たりするような誤作動を防止することができる。 As described above, unlike the conventional case, the cleaning operation of the air filter (30) is not permitted even though the first and second dust storage containers (60, 90) are sufficiently stored with dust. In addition, it is possible to prevent malfunctions such as dust overflowing from the first and second dust storage containers (60, 90) storing dust removed by the cleaning operation of the air filter (30).
  《その他の実施形態》
  上記実施形態については、以下のような構成としてもよい。
<< Other Embodiments >>
About the said embodiment, it is good also as the following structures.
  上記実施形態では、エアフィルタ(30)の清掃運転により除去された塵埃を貯留する塵埃貯留手段が第1、第2塵埃貯留容器(60,90)により構成されているが、これに限定する必要はなく、例えば、第2塵埃貯留容器(90)のみで構成されてもよい。この構成では、上記実施形態とは違い、エアフィルタ(30)から除去された塵埃が、一旦貯留されることなく、第2塵埃貯留容器(90)に貯留される。そして、この構成の場合には、検知センサ(71)は、ダンパボックス(81)と第2塵埃貯留容器(90)とを接続する搬送用ダクト(88)に設けるのがよい。こうすれば、搬送用ダクト(88)内に溜まる塵埃量を検知して、上記清掃運転制御部(39)がエアフィルタ(30)の清掃運転を禁止することができる。 In the above embodiment, the dust storage means for storing the dust removed by the cleaning operation of the air filter (30) is configured by the first and second dust storage containers (60, 90), but it is necessary to limit to this. For example, you may comprise only a 2nd dust storage container (90). In this configuration, unlike the above embodiment, the dust removed from the air filter (30) is stored in the second dust storage container (90) without being temporarily stored. In this configuration, the detection sensor (71) is preferably provided in the transfer duct (88) that connects the damper box (81) and the second dust container (90). In this way, the amount of dust accumulated in the transfer duct (88) can be detected, and the cleaning operation control section (39) can prohibit the cleaning operation of the air filter (30).
  上記実施形態では、室内天井に設置される室内ユニット(1)について説明したが、これに限定されず、室内の壁に設置されるいわゆる壁掛け式の室内ユニットであっても適用することができる。 In the above embodiment, the indoor unit (1) installed on the indoor ceiling has been described. However, the present invention is not limited to this, and a so-called wall-mounted indoor unit installed on an indoor wall can also be applied.
  また、上記実施形態では、検知センサ(71)が貯留部(62)の満杯を検知すると、フィルタ清掃運転を禁止し、掃除サインを出力するようにした。しかしながら、他の実施形態としては、冷暖房の通常運転である空調運転の禁止とフィルタ清掃運転の禁止とを段階的に制御するようにしてもよい。 In the above embodiment, when the detection sensor (71) detects that the storage section (62) is full, the filter cleaning operation is prohibited and a cleaning sign is output. However, as another embodiment, the prohibition of the air-conditioning operation, which is the normal operation of cooling and heating, and the prohibition of the filter cleaning operation may be controlled in stages.
  具体的に、上記検知センサ(71)が検出した光度に基づき、貯留部(62)の満杯を検出した際、エアフィルタ(30)の塵埃を除去して貯留部(62)が満杯になった状態である。したがって、上記エアフィルタ(30)は塵埃が除去された清掃後の状態である。したがって、その後に空調運転を所定時間継続することが可能な状態である。 Specifically, when the fullness of the storage part (62) was detected based on the light intensity detected by the detection sensor (71), dust in the air filter (30) was removed and the storage part (62) became full State. Therefore, the air filter (30) is in a state after cleaning from which dust has been removed. Therefore, the air conditioning operation can be continued for a predetermined time thereafter.
  そこで、上記検知センサ(71)が検出した光度に基づき、貯留部(62)が満杯となると、上述したように制御部(35)は、フィルタ清掃運転を禁止する。しかしながら、この状態では冷暖房の空調運転は許可し、空調運転の継続を可能とする。 Therefore, when the storage unit (62) becomes full based on the light intensity detected by the detection sensor (71), the control unit (35) prohibits the filter cleaning operation as described above. However, in this state, the air conditioning operation of the air conditioning is permitted and the air conditioning operation can be continued.
  上記制御部(35)は、フィルタ清掃運転を禁止した後に空調運転が所定時間継続されると、空調運転をも禁止するように構成してもよい。 The control unit (35) may be configured to prohibit the air conditioning operation when the air conditioning operation is continued for a predetermined time after the filter cleaning operation is prohibited.
  なお、以上の実施形態は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。 It should be noted that the above embodiment is essentially a preferable example, and is not intended to limit the scope of the present invention, its application, or its use.
  以上説明したように、本発明は、エアフィルタの清掃機能を備えた空気調和装置の室内ユニットについて有用である。 As described above, the present invention is useful for an indoor unit of an air conditioner having an air filter cleaning function.

Claims (2)

  1.   被処理空気中の塵埃を捕捉するエアフィルタ(30)と、エアフィルタ(30)に捕捉された塵埃を除去する塵埃除去手段(40,50)とを有し、上記塵埃除去手段(40,50)によるエアフィルタ(30)の清掃運転を制御する制御手段(39)を備えた空気調和装置の室内ユニットであって、
      上記塵埃除去手段(40,50)に接続されるとともに該塵埃除去手段(40,50)で除去した塵埃を貯留する塵埃貯留手段(60,90)と、上記塵埃除去手段(40,50)で除去した塵埃の量を検出する検出手段(71)と、上記検出手段(71)で検出した塵埃量が所定量以上になると検出信号を出力する塵埃量判定部(38)とを有し、
      上記制御手段(39)は、上記検出信号が入力されると、エアフィルタ(30)の清掃運転を禁止するように構成されていることを特徴とする空気調和装置の室内ユニット。
    An air filter (30) for capturing dust in the air to be treated; and a dust removing means (40, 50) for removing dust trapped by the air filter (30), wherein the dust removing means (40,50 ) Air conditioner indoor unit comprising a control means (39) for controlling the cleaning operation of the air filter (30).
    Connected to the dust removing means (40, 50) and storing dust removed by the dust removing means (40, 50), and the dust removing means (40, 50) Detection means (71) for detecting the amount of dust removed, and a dust amount determination unit (38) for outputting a detection signal when the amount of dust detected by the detection means (71) exceeds a predetermined amount,
    The indoor unit of an air conditioner, wherein the control means (39) is configured to prohibit the cleaning operation of the air filter (30) when the detection signal is input.
  2.   請求項1において、
      上記塵埃貯留手段(60,90)は、その内部に塵埃を貯留する貯留部(62)を有する一方、
      上記検出手段(71)は、該貯留部(62)の外側に配置される発光部(72)と、上記貯留部(62)を挟んで上記発光部(72)と対峙し該貯留部(62)を透過した上記発光部(72)の光の光度を検出する受光部(73)とを備え、該受光部(73)の検出光度に基づいて上記塵埃貯留手段(60,90)の塵埃量を検出するように構成されていることを特徴とする空気調和装置の室内ユニット。
    In claim 1,
    While the dust storage means (60, 90) has a storage part (62) for storing dust therein,
    The detecting means (71) is opposed to the light emitting part (72) disposed outside the storage part (62) and the light emitting part (72) across the storage part (62). ) And a light receiving part (73) for detecting the light intensity of the light emitting part (72), and the amount of dust in the dust storing means (60, 90) based on the light intensity detected by the light receiving part (73) An indoor unit of an air conditioner that is configured to detect the
PCT/JP2009/000265 2008-01-25 2009-01-23 Indoor unit of air conditioning apparatus WO2009093468A1 (en)

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