WO2021166121A1 - 空気調和機の室内機及び空気調和機 - Google Patents
空気調和機の室内機及び空気調和機 Download PDFInfo
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- WO2021166121A1 WO2021166121A1 PCT/JP2020/006518 JP2020006518W WO2021166121A1 WO 2021166121 A1 WO2021166121 A1 WO 2021166121A1 JP 2020006518 W JP2020006518 W JP 2020006518W WO 2021166121 A1 WO2021166121 A1 WO 2021166121A1
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- Prior art keywords
- air
- heat insulating
- air passage
- panel
- outside air
- Prior art date
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Images
Classifications
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- 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
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- 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
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
-
- 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
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0263—Insulation for air ducts
Definitions
- the present disclosure relates to an indoor unit of an outside air introduction type air conditioner and an air conditioner equipped with the indoor unit.
- Patent Document 1 discloses an indoor unit of an air conditioner capable of introducing outside air into an air-conditioned space by providing an outside air introduction box in the air outlet.
- the air-conditioning capacity of the indoor unit may decrease because the blowout air passage becomes narrow due to the installation of the outside air introduction box.
- the present disclosure solves the above-mentioned problems, and provides an indoor unit and an air conditioner of an air conditioner capable of introducing outside air into an air-conditioned space without lowering the air conditioning capacity of the indoor unit.
- the purpose is.
- the indoor unit of the air exchanger of the present disclosure is arranged on the ceiling surface of the air-conditioned space, and has an outer panel having a suction port and an air outlet, a fan that blows air from the suction port to the air outlet, and the suction.
- a heat exchanger that exchanges heat of air blown from the mouth, a heat insulating box having a gap for accommodating the heat exchanger and the fan, and the suction port and the gap are communicated with each other and sucked from the suction port. It has an intake air passage that guides the air to the heat exchanger, and an outlet air passage that communicates the air outlet with the void and guides the air that has passed through the heat exchanger to the air outlet.
- a heat insulating panel arranged between the outer surface panel and the heat insulating box, a housing containing the heat insulating box and the heat insulating panel, and a housing to which the outer surface panel is attached are provided, and the heat insulating box is provided with the air gap.
- the first outside air introduction air passage which is formed at a space and can communicate with the outside of the housing is provided, and the heat insulating panel is formed at a space from the blow air air passage and the first air passage. It has a second outside air introduction air passage that can communicate between the outside air introduction air passage and the intake air passage.
- the air conditioner of the present disclosure includes the above-mentioned indoor unit.
- the indoor unit of the air conditioner of the present disclosure since the second outside air introduction flow path is formed in the heat insulating panel at intervals from the blowout air passage, the second outside air introduction flow path is formed without narrowing the blowout air passage. Is easy to form. Therefore, the indoor unit of the air conditioner of the present disclosure includes an indoor unit of the air conditioner capable of introducing outside air into the air-conditioned space without deteriorating the air-conditioning capacity of the indoor unit, and the indoor unit. Can provide air conditioners.
- FIG. It is a refrigerant circuit diagram which illustrated the air conditioner which concerns on Embodiment 1.
- FIG. It is a perspective view which shows an example of the appearance structure of the indoor unit which concerns on Embodiment 1.
- FIG. It is an exploded perspective view of the indoor unit of FIG. It is a perspective view which looked at the insulation box from the end side of the wall of the insulation box. It is a perspective view which looked at the heat insulating panel from the lower surface side. It is a partially enlarged view of the heat insulating panel of FIG. It is a perspective view which looked at the heat insulating panel from the upper surface side. It is a partially enlarged view of the heat insulating panel of FIG.
- FIG. 9 is a top view which showed a part of the lower surface of the heat insulating panel of FIG. 9 is a cross-sectional view taken along the line AA of FIG.
- FIG. 9 is a cross-sectional view taken along the line BB of FIG.
- FIG. 14 is a front view of the outside air introduction blocking panel of FIG. 14 as viewed from the outside.
- FIG. 15 is a cross-sectional view taken along the line CC of FIG. FIG.
- FIG. 6 is an enlarged perspective view schematically showing a state in which the air passage blocking lid and the gripping member are detached from the heat insulating panel of FIG. It is a top view which showed a part of the lower surface of the heat insulating panel of FIG.
- FIG. 8 is a cross-sectional view taken along the line DD of FIG.
- FIG. 8 is a cross-sectional view taken along the line EE of FIG.
- It is a perspective view which shows the appearance structure of the duct flange.
- It is a perspective view which shows the state which attached the duct flange to the indoor unit of FIG.
- FIG. 23 is a cross-sectional view taken along the line FF of FIG. 23.
- FIG. 1 is a refrigerant circuit diagram illustrating the air conditioner 500 according to the first embodiment.
- the flow direction of the refrigerant of the air conditioner 500 during the cooling operation is indicated by a solid arrow
- the flow direction of the refrigerant of the air conditioner 500 during the heating operation is indicated by a broken arrow.
- the "cooling operation” is an operation mode of the air conditioner 500 that allows the low-temperature refrigerant to flow into the indoor unit 100
- the “heating operation” is an air conditioner that causes the high-temperature refrigerant to flow into the indoor unit 100.
- the shape and relative size of each component may differ from the actual ones.
- the indoor unit 100 and the outdoor unit 200 are connected to each other by the first extension pipe 300 and the second extension pipe 400, so that the refrigerant circulates between the indoor unit 100 and the outdoor unit 200.
- a refrigerant circuit is formed.
- the first extension pipe 300 and the second extension pipe 400 for example, the existing refrigerant pipe in the property where the air conditioner 500 is installed is used.
- the first extension pipe 300 is also referred to as a gas refrigerant pipe
- the second extension pipe 400 is also referred to as a liquid refrigerant pipe.
- the indoor unit 100 contains a heat exchanger 3 as a heat transfer device.
- the heat exchanger 3 exchanges heat between the air in the air-conditioned space and the refrigerant flowing inside the heat exchanger 3.
- the heat exchanger 3 functions as an evaporator during the cooling operation, and evaporates and vaporizes the refrigerant. Further, the heat exchanger 3 functions as a condenser during the heating operation to condense and liquefy the refrigerant.
- the detailed structure of the indoor unit 100 and the heat exchanger 3 will be described later.
- the outdoor unit 200 has a compressor 210, a four-way valve 220, a heat source side heat exchanger 230, and an expansion valve 240.
- the compressor 210 compresses the sucked low-temperature refrigerant and discharges it as a high-temperature refrigerant.
- a variable capacity compressor such as a scroll compressor or a rotary compressor, which can change the operating frequency by an inverter circuit or the like to change the amount of refrigerant discharged per unit time, is used. Be done.
- the four-way valve 220 has an internal flow path that can be switched by cooling operation and heating operation.
- the internal flow path of the four-way valve 220 during the cooling operation is shown by a solid line
- the internal flow path of the four-way valve 220 during the heating operation is shown by a broken line.
- the switching of the internal flow path of the four-way valve 220 is performed based on, for example, an instruction from a control device or the like.
- the air conditioner 500 can perform both heating operation and cooling operation. When only one of the cooling operation and the heating operation is performed in the air conditioner 500, the four-way valve 220 can be omitted.
- the heat source side heat exchanger 230 is a heat transfer device that transfers and exchanges heat energy between two fluids having different heat energies.
- the heat source side heat exchanger 230 includes, for example, heat between the refrigerant flowing inside the plurality of heat transfer tubes of the heat source side heat exchanger 230 and the air passing between the plurality of fins of the heat source side heat exchanger 230.
- An air-cooled heat exchanger such as a fin-and-tube heat exchanger is used for replacement.
- the heat source side heat exchanger 230 functions as a condenser during the cooling operation to condense and liquefy the refrigerant. Further, the heat source side heat exchanger 230 functions as an evaporator during the heating operation to evaporate and vaporize the refrigerant.
- the expansion valve 240 is an expansion device that expands and depressurizes a high-pressure liquid refrigerant.
- the expansion valve 240 for example, an electronic expansion valve whose opening degree can be adjusted based on an instruction from a control device or the like is used.
- FIG. 2 is a perspective view showing an example of the external structure of the indoor unit 100 according to the first embodiment.
- FIG. 3 is an exploded perspective view of the indoor unit 100 of FIG.
- the same members or parts or members or parts having the same functions are designated by the same reference numerals or omitted.
- the positional relationship between the constituent members of the indoor unit 100 for example, the positional relationship such as up / down, left / right, front / back, etc., is, in principle, the positional relationship when the indoor unit 100 is installed in a used state.
- the indoor unit 100 is formed as, for example, a ceiling-embedded cassette type indoor unit 100.
- the indoor unit 100 includes a housing 1, an outer panel 2, a heat exchanger 3, a fan 4, a heat insulating box 5, and a heat insulating panel 6.
- the housing 1 is made of sheet metal such as stainless steel, and is arranged in the space behind the ceiling.
- the housing 1 is a box body formed into a rectangular shape by bending a sheet metal or the like, and is open downward. A part of the corner of the peripheral surface of the housing 1 is chamfered into a flat shape. A corner surface 1a is formed at a corner of the peripheral surface of the housing 1 chamfered into a flat shape.
- the housing 1 houses a heat insulating box 5 that houses the heat exchanger 3 and the fan 4, and a heat insulating panel 6.
- a plurality of closing panels 1b are detachably formed on the side surface of the housing 1.
- the closing panel 1b can be integrally formed with the housing 1, and can be easily detached from the housing 1 by performing cutting or the like according to the installation environment of the indoor unit 100 or the like.
- a through hole is formed in the housing 1 by detaching the closing panel 1b from the housing 1.
- the outside air introduction blocking panel 1b1 that is detached when the outside air is introduced into the air-conditioned space can be provided on the corner surface 1a of the housing 1.
- the outside air introduction blocking panel 1b1 can prevent the air behind the ceiling from being attracted to the inside of the indoor unit 100, so that the air conditioning capacity of the indoor unit 100 is suppressed from being lowered. can.
- the outside air introduction blocking panel 1b1 can be easily detached without the worker performing drilling work or the like at the installation site, so that the on-site work can be reduced. ..
- the outside air introduction blocking panel 1b1 can be integrally formed with the housing 1.
- the number of parts of the indoor unit 100 can be reduced, and the man-hours for manufacturing the indoor unit 100 can be reduced.
- the outside air introduction blocking panel 1b1 is detached from the housing 1, it can be easily detached from the housing 1 by performing a cutting process or the like using a cutting tool such as a knife.
- the outer panel 2 is made of, for example, a thermoplastic resin such as plastic, and is arranged on the ceiling surface of an air-conditioned space such as a room.
- the outer panel 2 is fixed to the housing 1 and the heat insulating panel 6 without a gap by screwing or fitting in the space behind the ceiling.
- the outer panel 2 has a suction port 2a in the central portion.
- a protective panel 7 that covers the suction port 2a from below is detachably attached to the suction port 2a of the outer surface panel 2.
- a grill 7a having a plurality of slit-shaped ventilation holes is provided in the central portion of the protective panel 7, and the ventilation holes of the grill 7a function as suction ports 2a.
- the protective panel 7 does not have the grill 7a, and the suction port 2a of the outer surface panel 2 communicates with the air-conditioned space through the gap between the protective panel 7 and the outer surface panel 2. good.
- a filter 7b is arranged at the suction port 2a of the outer surface panel 2.
- the filter 7b is a porous member that removes dust, bacteria, and the like from the air sucked from the suction port 2a.
- the filter 7b is detachably attached so as to cover the downstream surface of the grill 7a of the protective panel 7, for example. Further, the filter 7b may be arranged at a distance from the protective panel 7. If the filter 7b is arranged so as to cover the protective panel 7, the filter 7b can be easily replaced and cleaned by detaching the protective panel 7 from the outer surface panel 2.
- the outer surface panel 2 is arranged around the suction port 2a and has one or more air outlets 2b that communicate with the inside of the housing 1.
- air outlets 2b are arranged around the suction port 2a, but two may be arranged with the suction port 2a in between, or only one may be arranged. It may be. Further, the air outlet 2b may be a slit-shaped opening that circulates in a rectangular shape around the suction port 2a.
- a vane 2c that deflects the wind direction blown out from the air outlet 2b is arranged on the outer panel 2.
- the rotational drive of the vane 2c the wind direction blown out from the air outlet 2b can be controlled in multiple stages from the direction along the ceiling surface to the downward direction.
- the rotational drive of the vane 2c is performed by, for example, a step motor.
- the heat exchanger 3 includes, for example, a plurality of plate-shaped fins arranged in parallel and a plurality of heat transfer tubes penetrating the plurality of plate-shaped fins, and air passing between adjacent plate-shaped fins.
- a fin-and-tube heat exchanger that exchanges heat with a refrigerant flowing through a plurality of heat transfer tubes is used.
- the heat exchanger 3 is a fin-and-tube type heat exchanger
- a plurality of heat transfer tubes are aligned in a direction away from the heat insulating panel 6, and one end of the plurality of plate-shaped fins is the heat insulating panel 6. It is placed in.
- the heat exchanger 3 is formed by bending a flat plate heat exchanger 3 into a hollow rectangular shape, but the heat exchanger 3 is not limited to this.
- the heat exchanger 3 may be formed by arranging four flat plate heat exchangers 3 in a hollow rectangular shape.
- the fan 4 blows air from the suction port 2a to the air outlet 2b.
- the fan 4 is arranged so that the suction side 4a of the fan 4 faces the grill 7a of the protective panel 7. Further, the tip of the rotation shaft 4b of the fan 4 is arranged so as to face the direction of the grill 7a of the protective panel 7. Further, around the rotation shaft 4b of the fan 4, a plurality of blades 4c for sending the air sucked from the suction port 2a to the heat exchanger 3 are provided.
- a centrifugal fan such as a multi-blade sirocco fan or a turbo fan is used.
- FIG. 4 is a perspective view of the heat insulating box 5 as viewed from the side of the end portion 5d of the wall of the heat insulating box 5.
- the heat insulating box 5 is made of a heat insulating synthetic resin such as foamable plastic.
- a heat insulating synthetic resin such as foamable plastic.
- expanded polystyrene such as polystyrene
- the heat insulating box 5 is manufactured by extrusion-molding melted expanded polystyrene into a mold of the heat insulating box 5 formed in advance.
- the heat insulating box 5 may be manufactured by a known method such as bead method foaming in which particles such as polystyrene are heated with steam to expand.
- the heat insulating box 5 is a box body formed so as to match the shape of the inner wall surface 1c of the housing 1, and is open downward.
- the outer wall surface 5a of the heat insulating box 5 is closely fixed to the inner wall surface 1c of the housing 1 by, for example, a sealing material such as silicone rubber and screwing.
- the heat insulating box 5 has a gap 5b for accommodating the heat exchanger 3 and the fan 4.
- the heat exchanger 3 is attached to the housing 1 in a state of being suspended from the upper walls of the housing 1 and the heat insulating box 5, for example.
- the fan 4 is attached to the housing 1 by screwing or the like through an opening provided in the upper wall of the heat insulating box 5.
- the air sucked from the suction port 2a is passed through the heat exchanger 3 by the rotational drive of the fan 4, and the air exchanged by the heat exchanger 3 is guided to the air outlet 2b. It also functions as an air passage. Since the void 5b of the heat insulating box 5 is a space surrounded by a heat insulating wall, it is possible to suppress the change in the thermal energy of the air heat exchanged by the heat exchanger 3 due to heat transfer to the outside.
- the heat insulating box 5 has a first outside air introduction air passage 50 formed at intervals from the gap 5b.
- the first outside air introduction air passage 50 extends from the direction of the upper wall of the heat insulating box 5 toward the opening side of the heat insulating box 5 along the wall of the heat insulating box 5.
- the first outside air introduction air passage 50 and the void 5b are separated by a partition wall 5c forming a part of the wall of the heat insulating box 5, and the first outside air introduction air passage 50 is spaced from the void 5b. It is formed as an independent air passage. Due to the heat insulating action of the partition wall 5c, the transfer of thermal energy between the air flowing through the void 5b and the outside air flowing through the first outside air introduction air passage 50 is suppressed.
- the first outside air introduction air passage 50 can be formed on the outer wall surface 5a of the heat insulating box 5 as a groove-shaped air passage.
- the first outside air introduction air passage 50 may be an outside air inflow groove 50a formed in the outer wall surface 5a of the heat insulating box 5.
- the cross-sectional shape of the partition wall 5c in the direction perpendicular to the flow direction of the outside air of the first outside air introduction air passage 50 can be any shape.
- the cross-sectional shape of the partition wall 5c may be rectangular, semicircular, or triangular, or may be another shape as long as the outside air does not stay in the first outside air introduction air passage 50. good.
- the partition wall 5c has a rectangular cross section.
- the partition wall 5c has a shape recessed from the outer wall surface 5a of the heat insulating box 5 in the direction of the gap 5b, and the width of the partition wall 5c separating the first outside air introduction air passage 50 and the gap 5b is set to the width of the other heat insulating box 5. Can be the same as the width of the wall surface. As a result, it is possible to suppress the transfer of thermal energy between the air flowing through the gap 5b and the outside air flowing through the first outside air introduction air passage 50 due to the formation of the first outside air introduction air passage 50.
- the outer wall surface 5a of the heat insulating box 5 on which the first outside air introduction air passage 50 is formed can be the corner surface 5a1 of the heat insulating box 5 which is in close contact with the corner surface 1a of the housing 1.
- the formation position of the partition wall 5c can be set to the corner of the void 5b of the heat insulating box 5. Therefore, even if the partition wall 5c is recessed, the possibility of interference with the heat exchanger 3 or the fan 4 housed in the gap 5b of the heat insulating box 5 can be reduced, so that the degree of freedom in designing the indoor unit 100 is improved. Can be made to.
- the first outside air introduction air passage 50 is formed so as to communicate with the outside of the housing 1.
- the first outside air introduction air passage 50 can be provided so as to open toward the wall surface of the housing 1 provided with the outside air introduction blocking panel 1b1, for example, the corner surface 1a.
- a part of the air passage for introducing the outside air into the indoor air-conditioned space is formed through the indoor unit 100.
- the outer wall surface 5a of the heat insulating box 5 having the outside air inflow groove 50a can be closely fixed to the housing 1.
- the close contact fixing of the outer wall surface 5a of the heat insulating box 5 to the housing 1 can be realized by, for example, a sealing material such as silicone rubber.
- a sealing material such as silicone rubber.
- FIG. 5 is a perspective view of the heat insulating panel 6 as viewed from the lower surface 6h side.
- FIG. 6 is a partially enlarged view of the heat insulating panel 6 of FIG.
- FIG. 7 is a perspective view of the heat insulating panel 6 as viewed from the upper surface 6b side.
- FIG. 8 is a partially enlarged view of the heat insulating panel 6 of FIG.
- FIG. 9 is a plan view showing a part of the lower surface 6h of the heat insulating panel 6 of FIG.
- FIG. 10 is a cross-sectional view taken along the line AA of FIG.
- FIG. 11 is a cross-sectional view taken along the line BB of FIG. Note that FIG. 7 corresponds to a view in which FIG. 5 is inverted by 180 degrees about the axis O.
- the heat insulating panel 6 is an inner plate arranged between the outer surface panel 2 and the heat insulating box 5.
- the heat insulating panel 6 is made of a heat insulating synthetic resin such as foamable plastic, and is manufactured, for example, by extrusion-molding melted polystyrene foam into a mold of the heat insulating panel 6 formed in advance. ..
- the side surface 6a of the heat insulating panel 6 is formed so as to match the shape of the inner wall surface 1c of the housing 1, and is firmly fixed to the inner wall surface 1c of the housing 1 by, for example, a sealing material such as silicone rubber and screwing. Will be done.
- the upper surface 6b of the heat insulating panel 6 is closely fixed to the end portion 5d of the wall of the heat insulating box 5 by, for example, a sealing material.
- a suction air passage 6c is formed on the heat insulating panel 6.
- the suction air passage 6c is a through hole that communicates between the suction port 2a of the outer surface panel 2 and the void 5b of the heat insulating box 5.
- the suction air passage 6c is formed as, for example, a circular through hole in the central portion of the heat insulating panel 6.
- the suction air passage 6c guides the air sucked from the suction port 2a to the heat exchanger 3 via the fan 4.
- the heat insulating panel 6 may be provided with a bell mouth-shaped expansion tube 8 as shown in FIG. 16 described later. By providing the heat insulating panel 6 with the expansion tube 8, it is possible to form an intake air passage 6c capable of efficiently guiding air to the heat exchanger 3.
- the tube expansion 8 may be formed separately from the heat insulating panel 6, or may be integrally formed with the heat insulating panel 6 by molding.
- a blowout air passage 6d is formed in the heat insulating panel 6.
- the outlet air passage 6d is a through hole that communicates between the outlet 2b of the outer panel 2 and the void 5b of the heat insulating box 5.
- the outlet air passage 6d has, for example, a plurality of independent rectangular distribution air passages 6d1 to 6d8, each of which communicates between the outlet 2b of the outer panel 2 and the void 5b of the heat insulating box 5. It is a through hole to let you.
- Two distribution air passages 6d1 to 6d8 are formed on each side so as to surround the intake air passage 6c.
- the distribution air passages 6d1 and the distribution air passages 6d2, the distribution air passages 6d3 and the distribution air passages 6d4, the distribution air passages 6d5 and the distribution air passages 6d6, and the distribution air passages 6d7 and the distribution air passages 6d8 have four outlets, respectively. It is arranged as two through holes communicating with any one of 2b.
- the number of distribution air passages 6d1 to 6d8 communicating with one outlet 2b is not limited to two, and may be one or three or more.
- the heat insulating panel 6 is provided with a water receiving groove 6e.
- the water receiving groove 6e functions as a drain pan that is generated in the heat exchanger 3 and stores the dropped water droplets.
- the water stored in the water receiving groove 6e is discharged to the outside of the indoor unit 100 by, for example, a drain pump.
- the water receiving groove 6e can be formed, for example, in the air passage wall 6f that surrounds the intake air passage 6c and partitions the intake air passage 6c and the outlet air passage 6d.
- a rib 6e1 on which the lower portion of the heat exchanger 3 is placed is formed on the bottom surface of the water receiving groove 6e.
- a plurality of ribs 6e1 may be provided depending on the shape of the heat exchanger 3. For example, in FIG. 7, a plurality of elongated ribs 6e1 are provided along the water receiving groove 6e.
- the water receiving groove 6e and the rib 6e1 are formed by, for example, arranging a water-repellent coating material in a portion corresponding to the water receiving groove 6e in the mold of the heat insulating panel 6 and extruding molten styrofoam.
- the water receiving groove 6e and the rib 6e1 do not have to be provided in the heat insulating panel 6.
- a drain pan may be formed separately from the heat insulating panel 6, and the drain pan may be provided with a water receiving groove 6e and a rib 6e1.
- the heat insulating panel 6 is formed with a second outside air introduction air passage 60 for introducing the outside air into the intake air passage 6c.
- the second outside air introduction air passage 60 is formed in the heat insulating panel 6 so that the first outside air introduction air passage 50 and the intake air passage 6c can communicate with each other.
- the second outside air introduction air passage 60 is formed in the heat insulating panel 6 at intervals from the blow air air passage 6d.
- the second outside air introduction air passage 60 is formed in the heat insulating panel 6 at intervals from the blow air passage 6d.
- the indoor unit can introduce the outside air into the air conditioning target space without lowering the air conditioning capacity. 100 can be provided.
- the second outside air introduction air passage 60 is formed in the heat insulating panel 6 so as not to communicate with the outlet air passage 6d and the water receiving groove 6e.
- the second outside air introduction air passage 60 and the plurality of distribution air passages 6d1 to 6d8 are arranged around the outlet air passage 6d and the water receiving groove 6e at intervals from each other.
- the second outside air introduction air passage 60 is formed in the corner portion 6g of the heat insulating panel 6 which is in close contact with the corner surface 1a of the housing 1 and partitions between the distribution air passage 6d1 and the distribution air passage 6d8. There is.
- an outside air outflow groove 60a formed as a groove-shaped air passage and communicating with the intake air passage 6c can be provided on the lower surface 6h of the heat insulating panel 6.
- the lower surface 6h of the heat insulating panel 6 is the wall surface of the heat insulating panel 6 facing the outer surface panel 2, and the outside air outflow groove 60a opens in the direction of the outer surface panel 2.
- the outside air outflow groove 60a on the lower surface 6h of the heat insulating panel 6 By forming the outside air outflow groove 60a on the lower surface 6h of the heat insulating panel 6, the air flowing through the gap 5b and the outside air flowing through the second outside air introduction air passage 60 without increasing the thickness of the heat insulating panel 6 in the vertical direction. It becomes easy to suppress the transfer of thermal energy between. Further, by forming the outside air outflow groove 60a on the lower surface 6h of the heat insulating panel 6, the water receiving groove 6e can be formed on the upper surface 6b of the heat insulating panel 6 without increasing the thickness of the heat insulating panel 6 in the vertical direction. Therefore, by forming the outside air outflow groove 60a on the lower surface 6h of the heat insulating panel 6, the material cost for manufacturing the heat insulating panel 6 can be reduced, and the manufacturing cost can be reduced.
- the cross-sectional shape of the outside air outflow groove 60a in the direction perpendicular to the flow direction of the outside air can be any shape.
- the cross-sectional shape of the outside air outflow groove 60a may be rectangular, semicircular, or triangular, or may be another shape as long as the outside air does not stay in the outside air outflow groove 60a.
- the outside air outflow groove 60a has a rectangular cross section.
- the lower surface 6h of the heat insulating panel 6 having the outside air outflow groove 60a can be closely fixed to the outer surface panel 2.
- Adhesion fixing of the lower surface 6h of the heat insulating panel 6 to the outer surface panel 2 can be realized by, for example, a sealing material such as silicone rubber.
- a sealing material such as silicone rubber.
- the air is mixed between the outside air outflow groove 60a and the blown air passage 6d, and between the intake air passage 6c and the blown air passage 6d. Since it can be suppressed, it is possible to suppress a decrease in the air conditioning capacity of the indoor unit 100.
- a communication passage 60b capable of communicating between the outside air outflow groove 60a and the first outside air introduction air passage 50 can be provided.
- the communication passage 60b can be formed, for example, as a hole capable of communicating between the outside air outflow groove 60a and the first outside air introduction air passage 50.
- the communication passage 60b can be formed, for example, in the corner 6g of the heat insulating panel 6 that partitions between the distribution air passage 6d1 and the distribution air passage 6d8.
- the opening area of the blowout air passage 6d including the distribution air passage 6d1 and the distribution air passage 6d8 is not reduced, and the first outside air introduction air passage 50 is used.
- the communication passage 60b through which the outside air passes can be formed in the heat insulating panel 6. Therefore, by forming the communication passage 60b at the corner 6g of the heat insulating panel 6, the indoor unit 100 can be configured so as to suppress the decrease of the air passing through the blowout air passage 6d.
- the communication passage 60b at the corner 6g of the heat insulating panel 6, it is possible to secure the distance between the blowout air passage 6d and the communication passage 60b. If it becomes possible to secure a distance between the blowout air passage 6d and the communication passage 60b, heat transfer between the outside air passing through the communication passage 60b and the air passing through the blowout air passage 6d causes the blowout air passage 6d. It is possible to suppress an increase or decrease in the thermal energy of the air passing through the air. Therefore, by forming the communication passage 60b at the corner 6g of the heat insulating panel 6, it is possible to suppress a decrease in the air conditioning capacity of the indoor unit 100.
- the shape of the hole in the communication passage 60b can be any shape as long as it can communicate between the outside air outflow groove 60a and the first outside air introduction air passage 50.
- the shape of the hole in the communication passage 60b may be a rectangular shape, a circular shape, or a polygonal shape, or may be another shape as long as the outside air does not stay in the communication passage 60b.
- the communication passage 60b has a rectangular hole.
- the heat insulating panel 6 has an air passage blocking lid 65 arranged in the second outside air introduction air passage 60.
- the air passage blocking lid 65 is formed in the second outside air introduction air passage 60 so as to be detachable from the heat insulating panel 6.
- the air passage blocking lid 65 is integrally formed with the heat insulating panel 6. If the air passage blocking lid 65 is integrally formed with the heat insulating panel 6, the number of parts for manufacturing the heat insulating panel 6 can be reduced, so that the manufacturing cost of the indoor unit 100 can be suppressed. Further, if the air passage blocking lid 65 is integrally formed with the heat insulating panel 6, the air passage blocking lid 65 is molded from a foamable plastic such as Styrofoam, and processing such as excision for desorption becomes easy. The efficiency of the work of removing the blocking lid 65 is improved.
- the air passage blocking lid 65 is a blocking wall that blocks communication between the intake air passage 6c and the first outside air introduction air passage 50.
- the air passage blocking lid 65 can be provided, for example, in the communication passage 60b.
- the cutting edge of a cutting tool such as a knife can be moved along the wall surface of the communication passage 60b, and the air passage blocking lid 65 can be easily detached. The efficiency of the work of removing the blocking lid 65 is further improved.
- the heat insulating panel 6 is provided with a sign indicating the position of the outer edge 65a of the air passage blocking lid 65 on the side of the outside air outflow groove 60a.
- the sign may indicate the position of the outer edge 65a of the air passage blocking lid 65 using a pen or the like, or may be a notch groove 65a1 indicating the position of the outer edge 65a of the air passage blocking lid 65. May be good.
- the cutting edge of a cutting tool such as a knife is provided along the notch groove 65a1. It can be moved without deviating from the notch groove 65a1.
- the heat insulating panel 6 with a notch groove 65a1 indicating the position of the outer edge 65a of the air passage blocking lid 65 on the side of the outside air outflow groove 60a, the cutting position of the air passage blocking lid 65 can be easily visually specified.
- the heat insulating panel 6 with a notch groove 65a1 indicating the position of the outer edge 65a of the air passage blocking lid 65 on the side of the outside air outflow groove 60a, the work of removing the air passage blocking lid 65 can be more appropriately and efficiently performed. It can be carried out.
- the notch groove 65a1 is provided on the entire circumference of the outer edge 65a of the air passage blocking lid 65, but it may be provided only in a part of the position of the outer edge 65a of the air passage blocking lid 65. good.
- the cross-sectional shape of the cut groove 65a1 in the direction perpendicular to the extending direction of the cut groove 65a1 can be any shape.
- the cross-sectional shape of the cut groove 65a1 may be rectangular, semicircular, or triangular, as long as the cutting edge of a cutting tool such as a knife is moved without deviating from the cut groove 65a1.
- Other shapes may be used.
- the notch groove 65a1 has a triangular cross section.
- the heat insulating panel 6 has a gripping member 68 arranged on the side of the outside air outflow groove 60a of the air passage blocking lid 65. If the gripping member 68 is arranged on the side of the outside air outflow groove 60a of the air passage blocking lid 65, after cutting the outer edge 65a of the air passage blocking lid 65 with a cutting tool such as a knife, the gripping member 68 is placed on the side of the outside air outflow groove 60a.
- the air passage blocking lid 65 can be easily separated from the heat insulating panel 6 by pulling to. Therefore, by arranging the gripping member 68 on the side of the outside air outflow groove 60a of the air passage blocking lid 65, the efficiency of the removal work of the air passage blocking lid 65 can be improved.
- the gripping member 68 is integrally formed with, for example, the air passage blocking lid 65. If the gripping member 68 is integrally formed with the air passage blocking lid 65, the number of parts for manufacturing the heat insulating panel 6 can be reduced, so that the manufacturing cost of the indoor unit 100 can be suppressed.
- the shape of the gripping member 68 can be any shape.
- the shape of the gripping member 68 may be a polygonal prism shape, a cylindrical shape, a polygonal weight shape, a conical shape, or a dome shape, or can be pinched by a work tool such as a finger or pliers of a local worker. As long as it has a shape, it may have another shape.
- the gripping member 68 has a shape in which each side of the square pillar is chamfered.
- FIG. 12 is a perspective view showing a state in which the heat insulating box 5 and the heat insulating panel 6 are combined.
- FIG. 13 is a partially enlarged view of FIG.
- FIG. 14 is a perspective view showing a state in which the housing 1 is further combined with the heat insulating box 5 and the heat insulating panel 6 of FIG.
- FIG. 15 is a front view of the outside air introduction blocking panel 1b1 of FIG. 14 as viewed from the outside.
- FIG. 16 is a cross-sectional view taken along the line CC of FIG. In FIG. 16, the air flow when the indoor unit 100 is driven is schematically shown by a solid arrow, and the direction in which the air flow is blocked or suppressed is marked with a cross in the dotted arrow. Is schematically shown.
- the heat insulating box 5 and the heat insulating panel 6 are closely fixed to each other with a sealing material such as silicone rubber.
- a sealing material such as silicone rubber.
- the air flowing through the gap 5b of the heat insulating box 5 leaks from between the upper surface 6b of the heat insulating panel 6 and the end portion 5d of the wall of the heat insulating box 5. Therefore, it is possible to suppress a decrease in the air conditioning capacity of the indoor unit 100.
- the outer wall surface 5a of the heat insulating box 5 and the side surface 6a of the heat insulating panel 6 are attached to the housing 1 by, for example, screwing or a sealing material such as silicone rubber. It is closely fixed to the inner wall surface 1c.
- the first outside air introduction air passage 50 formed in the corner surface 5a1 of the heat insulating box 5 as the outside air inflow groove 50a by closely fixing the housing 1 to the heat insulating box 5 and the heat insulating panel 6 is a corner surface of the housing 1. It is closed facing the outside air introduction blocking panel 1b1 provided in 1a.
- the first outside air introduction air passage 50 has the corner surface 1a of the housing 1 having the outside air introduction blocking panel 1b1 and the second outside air introduction. It is a closed space formed between the air passage blocking lid 65 provided in the air passage 60. Therefore, in the state where the outside air introduction blocking panel 1b1 is provided, the inflow of air from the outside of the housing 1 into the first outside air introduction air passage 50 is suppressed.
- the indoor unit 100 is driven with the outside air introduction blocking panel 1b1 and the air passage blocking lid 65 provided.
- the air in the space to be air-conditioned is air-conditioned through the suction port 2a of the outer panel 2, the suction air passage 6c of the heat insulating panel 6, and the expansion pipe 8 to the gap 5b of the heat insulating box 5.
- the air attracted to the gap 5b of the heat insulating box 5 is blown to the heat exchanger 3 by the rotation of the fan 4.
- heat exchange is performed between the air blown by the fan 4 passing through the heat exchanger 3 and the refrigerant flowing inside the heat exchanger 3.
- the air that has been heat-exchanged in the heat exchanger 3 is blown to the air outlet 2b of the outer panel 2 through the air passage 6d of the heat insulating panel 6 by the rotation of the fan 4, and is air-conditioned from the air outlet 2b of the outer panel 2. It is blown out into the target space.
- the air passing through the intake air passage 6c of the heat insulating panel 6 may partially flow into the outside air outflow groove 60a of the second outside air introduction air passage 60 due to diffusion.
- the air passage blocking lid 65 is provided in the communication passage 60b, the air to the first outside air introduction air passage 50 via the second outside air introduction air passage 60 is provided. Inflow is suppressed. Therefore, since the air passage blocking lid 65 is provided in the second outside air introduction air passage 60, it is attracted to the gap 5b of the heat insulating box 5 due to the formation of the first outside air introduction air passage 50 and the second outside air introduction air passage 60. Since the decrease in the flow rate of the air to be generated can be suppressed, the decrease in the air conditioning capacity of the indoor unit 100 can be suppressed.
- the housing 1 when air flows into the first outside air introduction air passage 50, since the housing 1 is made of sheet metal, it may resonate due to the wind pressure and generate noise. However, since the air passage blocking lid 65 is provided in the second outside air introduction air passage 60, the inflow of air into the first outside air introduction air passage 50 is suppressed, so that the possibility of noise generation in the indoor unit 100 is reduced. can.
- FIG. 17 is an enlarged perspective view schematically showing a state in which the air passage blocking lid 65 and the gripping member 68 are detached from the heat insulating panel 6 of FIG.
- FIG. 18 is a plan view showing a part of the lower surface 6h of the heat insulating panel 6 of FIG.
- FIG. 19 is a cross-sectional view taken along the line DD of FIG.
- FIG. 20 is a cross-sectional view taken along the line EE of FIG.
- FIG. 21 is a perspective view showing the external structure of the duct flange 10.
- FIG. 22 is a perspective view showing a state in which the duct flange 10 is attached to the indoor unit 100 of FIG.
- FIG. 23 is a front view of the duct flange 10 of FIG.
- FIG. 24 is a cross-sectional view taken along the line FF of FIG. 23.
- a state in which the air passage blocking lid 65 and the gripping member 68 are detached from the heat insulating panel 6 is schematically shown by a dotted arrow.
- the air flow when the indoor unit 100 is driven is schematically shown by solid arrows.
- the air passage blocking lid 65 and the gripping member 68 are detached from the heat insulating panel 6.
- the work of removing the air passage blocking lid 65 and the gripping member 68 from the heat insulating panel 6 is performed by a local worker using a cutting tool such as a knife.
- the second outside air introduction air passage 60 can communicate from the upper surface 6b of the heat insulating panel 6 to the intake air passage 6c of the heat insulating panel 6.
- the suction air passage 6c of the heat insulating panel 6 and the first outside air introduction air passage 50 of the heat insulating box 5 can communicate with each other. can.
- the outside air introduction blocking panel 1b1 is detached from the housing 1.
- the work of removing the outside air introduction blocking panel 1b1 from the housing 1 is also performed by a local worker using a cutting tool such as a knife.
- a duct flange 10 is attached to the detached portion of the outside air introduction blocking panel 1b1 of the housing 1.
- the duct flange 10 is formed as a joint that connects the duct provided for taking in outside air into the air-conditioned space and the housing 1.
- the duct flange 10 has, for example, a hollow disk-shaped ring 10a attached to the housing 1 by screwing or the like, and a hollow cylindrical joint 10b connected to the inner edge of the ring 10a to connect the duct. There is.
- the joint 10b is provided with a fastening hole 10b1 for fastening the duct by screwing or the like.
- the ring 10a is not limited to the one having a hollow disk shape, and may be, for example, one having a circular hole in the outer shape of a rectangular shape.
- the shape of the joint 10b is not limited to the hollow cylindrical shape, and may be another shape depending on the shape of the duct. For example, when the duct has a rectangular shape, the shape of the joint 10b can be a hollow rectangular pillar shape.
- the indoor unit 100 is driven with the outside air introduction blocking panel 1b1 and the air passage blocking lid 65 detached.
- the air in the air-conditioned space is attracted to the intake air passage 6c of the heat insulating panel 6, and at the same time, the outside air is attracted to the suction air passage 6c of the heat insulating panel 6.
- the air in the air-conditioned space is attracted to the suction air passage 6c of the heat insulating panel 6 through the suction port 2a of the outer surface panel 2.
- the outside air is attracted to the intake air passage 6c of the heat insulating panel 6 via the duct flange 10, the first outside air introduction air passage 50, and the second outside air introduction air passage 60.
- heat exchange is performed between the air blown by the fan 4 passing through the heat exchanger 3 and the refrigerant flowing inside the heat exchanger 3.
- the air that has been heat-exchanged in the heat exchanger 3 is blown to the air outlet 2b of the outer panel 2 through the air passage 6d of the heat insulating panel 6 by the rotation of the fan 4, and is air-conditioned from the air outlet 2b of the outer panel 2. It is blown out into the target space.
- the outside air introduction blocking panel 1b1 and the air passage blocking lid 65 detached With the outside air introduction blocking panel 1b1 and the air passage blocking lid 65 detached, the outside air of the heat insulating panel 6 passes through the duct flange 10, the first outside air introduction air passage 50, and the second outside air introduction air passage 60. It is attracted to the suction air passage 6c and is not blown out into the air-conditioned space. Further, when the indoor unit 100 is driven with the outside air introduction shutoff panel 1b1 and the air passage cutoff lid 65 detached, the outside air and the air in the air-conditioned space merge at the intake air passage 6c, and the heat exchanger 3 Heat is exchanged at. Therefore, in the heat insulating panel 6, by allowing the second outside air introduction air passage 60 to communicate with the intake air passage 6c, it is possible to suppress an increase or decrease in the temperature of the air-conditioned space due to the introduction of the outside air.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
- Air Humidification (AREA)
Abstract
Description
実施の形態1に係る空気調和機500について説明する。図1は、実施の形態1に係る空気調和機500を例示した冷媒回路図である。図1では、冷房運転時における空気調和機500の冷媒の流れ方向が実線の矢印で示され、暖房運転時における空気調和機500の冷媒の流れ方向が破線の矢印で示されている。ここで、「冷房運転」とは、室内機100に低温の冷媒を流入させる空気調和機500の運転態様であり、「暖房運転」とは、室内機100に高温の冷媒を流入させる空気調和機500の運転態様である。なお、以下の図面においては、各構成部材の形状及び相対的な大きさは、実際のものと異なる場合がある。
Claims (13)
- 空調対象空間の天井面に配置され、吸入口と吹出口とを有する外面パネルと、
前記吸入口から前記吹出口に空気を送風するファンと、
前記吸入口から送風された空気の熱交換を行う熱交換器と、
前記熱交換器と前記ファンとを収容する空隙を有する断熱箱と、
前記吸入口と前記空隙とを連通させ、前記吸入口から吸入された空気を前記熱交換器に誘導する吸入風路と、前記吹出口と前記空隙とを連通させ、前記熱交換器を通過した空気を前記吹出口に誘導する吹出風路とを有し、前記外面パネルと前記断熱箱との間に配置された断熱パネルと、
前記断熱箱と前記断熱パネルとを収容し、前記外面パネルが取り付けられる筐体と
を備え、
前記断熱箱は、前記空隙と間隔をあけて形成され、かつ、前記筐体の外部と連通可能な第1外気導入風路を有し、
前記断熱パネルは、前記吹出風路と間隔をあけて形成され、かつ、前記第1外気導入風路と前記吸入風路との間を連通可能な第2外気導入風路を有している
空気調和機の室内機。 - 前記吹出風路は、独立した複数の分配風路を有しており、
前記第2外気導入風路及び前記複数の分配風路は、前記吸入風路の周囲において、互いに間隔をあけて配置されている
請求項1に記載の空気調和機の室内機。 - 前記第2外気導入風路は、
前記外面パネルに対面する前記断熱パネルの壁面に形成され、前記吸入風路と連通する外気流出溝と、
前記外気流出溝と前記第1外気導入風路との間を連通可能な連通路と
を有し、
前記外面パネルは、前記外気流出溝を有する前記断熱パネルの壁面に密着して取り付けられている
請求項1又は2に記載の空気調和機の室内機。 - 前記連通路は、前記外気流出溝と前記第1外気導入風路との間を連通可能な孔として形成されている
請求項3に記載の空気調和機の室内機。 - 前記断熱パネルは、前記連通路に配置され、前記吸入風路と前記第1外気導入風路との間の連通を遮断し、前記断熱パネルから脱離可能な風路遮断蓋を有している
請求項3又は4に記載の空気調和機の室内機。 - 前記風路遮断蓋は、前記断熱パネルと一体形成されている
請求項5に記載の空気調和機の室内機。 - 前記断熱パネルは、前記風路遮断蓋の前記外気流出溝の側に配置され、前記風路遮断蓋と一体形成された把持部材を有している
請求項5又は6に記載の空気調和機の室内機。 - 前記断熱パネルには、前記外気流出溝の側における前記風路遮断蓋の外縁の位置を示す標識が設けられている
請求項5~7のいずれか一項に記載の空気調和機の室内機。 - 前記標識は、前記風路遮断蓋の外縁の位置を示す切込溝である
請求項8に記載の空気調和機の室内機。 - 前記第1外気導入風路は、前記断熱箱の外壁面に形成された外気流入溝を有し、
前記外気流入溝を有する前記断熱箱の前記外壁面は、前記筐体に密着固定されている
請求項1~9のいずれか一項に記載の空気調和機の室内機。 - 前記筐体は、前記筐体の外部と前記第1外気導入風路との間の連通を遮断し、前記筐体から脱離可能な外気導入遮断パネルを有している
請求項1~10のいずれか一項に記載の空気調和機の室内機。 - 前記外気導入遮断パネルは前記筐体と一体形成されている
請求項11に記載の空気調和機の室内機。 - 請求項1~12のいずれか一項に記載の室内機を備えた
空気調和機。
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US17/780,723 US20230010667A1 (en) | 2020-02-19 | 2020-02-19 | Indoor unit for air-conditioning apparatus and air-conditioning apparatus |
JP2022501479A JP7292489B2 (ja) | 2020-02-19 | 2020-02-19 | 空気調和機の室内機及び空気調和機 |
DE112020006757.2T DE112020006757T5 (de) | 2020-02-19 | 2020-02-19 | Inneneinheit für eine Klimaanlagenvorrichtung und eine Klimaanlagenvorrichtung |
PCT/JP2020/006518 WO2021166121A1 (ja) | 2020-02-19 | 2020-02-19 | 空気調和機の室内機及び空気調和機 |
CN202080091502.3A CN115066584B (zh) | 2020-02-19 | 2020-02-19 | 空调机的室内机以及空调机 |
AU2020430154A AU2020430154B2 (en) | 2020-02-19 | 2020-02-19 | Indoor unit for air-conditioning apparatus and air-conditioning apparatus |
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CN209181111U (zh) * | 2018-12-12 | 2019-07-30 | 广东美的制冷设备有限公司 | 空调室内机以及空调装置 |
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JPH04110319U (ja) * | 1991-03-08 | 1992-09-24 | 三菱重工業株式会社 | 空気調和機 |
JP2000009333A (ja) * | 1998-06-19 | 2000-01-14 | Fujitsu General Ltd | 天井埋込形空気調和機 |
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DE112020006757T5 (de) | 2023-01-12 |
AU2020430154B2 (en) | 2023-08-31 |
US20230010667A1 (en) | 2023-01-12 |
JP7292489B2 (ja) | 2023-06-16 |
CN115066584A (zh) | 2022-09-16 |
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AU2020430154A1 (en) | 2022-09-08 |
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