WO2020021678A1 - Indoor unit and refrigeration cycle apparatus - Google Patents

Indoor unit and refrigeration cycle apparatus Download PDF

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Publication number
WO2020021678A1
WO2020021678A1 PCT/JP2018/028096 JP2018028096W WO2020021678A1 WO 2020021678 A1 WO2020021678 A1 WO 2020021678A1 JP 2018028096 W JP2018028096 W JP 2018028096W WO 2020021678 A1 WO2020021678 A1 WO 2020021678A1
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WO
WIPO (PCT)
Prior art keywords
indoor unit
suction port
air
panel
blower
Prior art date
Application number
PCT/JP2018/028096
Other languages
French (fr)
Japanese (ja)
Inventor
惇司 河野
拓矢 寺本
亮 堀江
栗原　誠
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2020532090A priority Critical patent/JP7097973B2/en
Priority to EP18927912.8A priority patent/EP3828475A4/en
Priority to PCT/JP2018/028096 priority patent/WO2020021678A1/en
Publication of WO2020021678A1 publication Critical patent/WO2020021678A1/en

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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
    • F24F1/0043—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
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F24F2013/205—Mounting a ventilator fan therein
    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/242—Sound-absorbing material

Definitions

  • the present invention relates to an indoor unit and a refrigeration cycle device including a panel in which a first suction port and a second suction port provided inside the first suction port are formed.
  • an air conditioner in which a suction panel as a central member is installed at the center of a suction port formed in a lower portion of a housing.
  • the suction panel makes it difficult to visually recognize the inside of the housing by covering the suction port, and blocks sound generated from the inside of the housing.
  • an indoor unit of an air conditioner that has reduced noise while ensuring designability has been proposed.
  • the suction panel by installing the suction panel, the area of the suction port is reduced, and a dead water area is formed on the inner surface of the housing of the suction panel due to the separation of airflow, thereby increasing ventilation resistance. For this reason, the input power of the fan motor increases, and the energy saving performance deteriorates.
  • Patent Literature 1 discloses a ceiling-embedded indoor unit in which an auxiliary opening is formed in a suction panel provided at the center of an annular suction port.
  • the indoor unit of Patent Literature 1 aims to increase the suction area and reduce the dead water area, reduce the ventilation resistance, and suppress the increase in the input power of the fan motor.
  • Patent Literature 1 since the auxiliary opening is provided to ensure energy saving, sound generated from a blower or the like easily leaks to the outside through the auxiliary opening. Therefore, according to Patent Document 1, the sound insulation of the suction panel is reduced, and the noise reduction effect cannot be sufficiently obtained.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an indoor unit and a refrigeration cycle device that improve sound insulation while ensuring energy saving.
  • an opening is formed on the air-conditioned space side, a main body attached to the mounted portion, a first suction port for sucking air, and a central side of the main body more than the first suction port.
  • a panel formed with a second suction port formed to suck air, a blowout port for blowing air sucked from the first suction port and the second suction port, and covering an opening of the main body;
  • a blower configured to form a flow of air sucked from the mouth and the second suction port and blown out to the outlet, and a wind guide wall provided so as to cover at least a part of the second suction port of the panel.
  • the wind guide wall is provided at the second suction port, it is possible to suppress the sound inside the main body from leaking to the outside through the second suction port. Therefore, even if the second suction port is formed in the panel in order to reduce the ventilation resistance and secure energy saving, the sound insulation can be improved. That is, the indoor unit can improve the sound insulation while ensuring energy saving.
  • FIG. 2 is a bottom view showing the indoor unit 200 according to Embodiment 1 of the present invention.
  • FIG. 2 is a side perspective view showing the indoor unit 200 according to Embodiment 1 of the present invention.
  • FIG. 6 is a side perspective view showing an indoor unit 200a according to a first modification of the first embodiment of the present invention.
  • FIG. 10 is a side perspective view showing an indoor unit 200b according to a second modification of the first embodiment of the present invention. It is a bottom view which shows the indoor unit 200c which concerns on the 3rd modification of Embodiment 1 of this invention.
  • FIG. 14 is a side perspective view showing an indoor unit 201 according to a fourth modified example of Embodiment 1 of the present invention.
  • FIG. 13 is a circuit diagram showing a refrigeration cycle apparatus 1000 according to Embodiment 4 of the present invention.
  • FIG. 1 is a bottom view showing the indoor unit 200 according to Embodiment 1 of the present invention
  • FIG. 2 is a side perspective view showing the indoor unit 200 according to Embodiment 1 of the present invention.
  • the indoor unit 200 is, for example, an indoor unit 200 of a package type air conditioner. As shown in FIGS. 1 and 2, the indoor unit 200 includes a main body 20, a panel 25, a wind direction plate 13, a heat exchanger 3, a drain pan 16, a filter 8, a blower 18, and a bell mouth 14. , A wind guide wall 23.
  • the main body 20 is attached to the attached portion 15 such as a ceiling surface, and is a bottomed rectangular cylindrical housing.
  • the main body 20 includes a main body top plate 5 having a rectangular shape disposed on the back side of the attached portion 15, and four main body side plates 4 extending from four sides of the main body top plate 5 to the air-conditioned space 17 side, The side facing the main body top plate 5 is an opening 20a.
  • Embodiment 1 exemplifies the indoor unit 200 of the ceiling-embedded air conditioner in which the main body 20 is embedded on the back side of the attached portion 15.
  • the panel 25 covers the opening 20a of the main body 20, and has the decorative panel 6 and the suction panel 7.
  • the panel 25 may be, for example, a sheet metal or a resin.
  • the decorative panel 6 is, for example, a rectangular frame-shaped member detachably attached to the main body 20, and covers an edge of the opening 20 a of the main body 20. At both ends on the long side of the decorative panel 6, holes extending in the longitudinal direction are formed. Note that the decorative panel 6 is located on substantially the same plane as the mounted portion 15.
  • the suction panel 7 is, for example, a rectangular frame-shaped member that is disposed inside the frame-shaped decorative panel 6 and is detachably attached to the decorative panel 6, and covers the center of the opening 20 a of the main body 20.
  • the surface of the suction panel 7 on the air-conditioned space 17 side is substantially horizontal.
  • a portion between the decorative panel 6 and the suction panel 7 serves as a first suction port 21, and the first suction port 21 sucks air in the air-conditioned space 17. Opening. Further, of the openings 20a of the main body 20, the inside of the frame-shaped suction panel 7 is a second suction port 22, and the second suction port 22 is also an opening into which air in the air-conditioned space 17 is sucked. is there. That is, the second suction port 22 is formed closer to the center of the main body 20 than the first suction port 21 is.
  • outlets 9 are the first inlet 21 and the second inlet 21.
  • the case where the number of the first suction ports 21 is two is illustrated, but the number of the first suction ports 21 may be one, or three or more.
  • the case where the number of the second suction ports 22 is one is illustrated, but the number of the second suction ports 22 may be two or more.
  • the number of outlets 9 may be one, or three or more.
  • four outlets 9 may be provided as holes along four edges of the decorative panel 6.
  • Wind direction plate 13 is provided at each outlet 9 and adjusts the direction of the air blown out from the outlet 9.
  • the heat exchanger 3 is provided in an air path connecting the first suction port 21 and the second suction port 22 to the blowout port 9 on the radial outside of the blower 18, and the first suction port 21 and the second The air sucked from the second suction port 22 is exchanged with the refrigerant.
  • the heat exchanger 3 is, for example, a fin-and-tube heat exchanger 3 having a plurality of fins (not shown) and a plurality of heat transfer tubes (not shown). The plurality of fins are arranged at predetermined intervals in the horizontal direction, and the plurality of heat transfer tubes penetrate the plurality of fins.
  • the heat transfer tube is connected to the outdoor unit 100 (see FIG. 10) by a gas pipe 300 and a liquid pipe 400.
  • the drain pan 16 is provided below the heat exchanger 3, and receives dew water generated by cooling the air in the air-conditioned space 17 in the heat exchanger 3.
  • the filter 8 is provided between the suction panel 7 and the blower 18 and removes air sucked from the first suction port 21 and the second suction port 22.
  • the outer shape of the filter 8 is smaller than the outer shape of the suction panel 7, and the filter 8 is hidden in plan view from below the indoor unit 200. Thereby, even if the user or the like visually recognizes the indoor unit 200 from below, the filter 8 cannot be seen through the first suction port 21.
  • the blower 18 is provided at the center inside the main body 20, and forms a flow of air sucked from the first suction port 21 and the second suction port 22 and blown out to the blowout port 9.
  • the blower 18 has a fan motor 2, a shaft 2a, and the centrifugal fan 1.
  • the fan motor 2 is supported on the lower surface of the main body top plate 5 and rotates the centrifugal fan 1.
  • the shaft 2a is a rotating shaft extending downward from the fan motor 2.
  • the centrifugal fan 1 is, for example, a turbo fan, and includes a main plate 10 having a boss which is a fixing portion to the shaft 2a, a plurality of blades 12, and a side plate 11 forming an air passage.
  • the blades 12 are rotated by the rotation of the fan motor 2.
  • the centrifugal fan 1 sucks air from the first suction port 21 and the second suction port 22 into the inside of the main body 20, and blows out the sucked air from the outlet 9 into the room, which is the air-conditioned space 17.
  • the bell mouth 14 is a curved cylindrical member that is provided between the centrifugal fan 1 of the blower 18 and the suction panel 7 and gradually reduces the diameter of the air sent to the blower 18 from the upstream side to the downstream side.
  • the wind guide wall 23 is provided so as to cover at least a part of the second suction port 22, and suppresses the sound inside the main body 20 from leaking to the outside through the second suction port 22.
  • the air guide wall 23 is attached to the suction panel 7 by, for example, a support member (not shown), and is installed so as to cover the second suction port 22 in plan view from below the indoor unit 200.
  • the air guide wall 23 is provided at a position different in height from the suction panel 7. In the first embodiment, the air guide wall 23 is provided closer to the blower 18 than the suction panel 7.
  • the wind guide wall 23 has a width equivalent to the width (length in the horizontal direction) of the second suction port 22 in a side sectional view.
  • the design of the indoor unit 200 can be improved.
  • the air guide wall 23 has an area equal to the opening area of the second suction port 22.
  • the design of the indoor unit 200 can be further improved than when the wind guide wall 23 only has a width equal to the width of the second suction port 22.
  • the wind guide wall 23 may have an area larger than the opening area of the second suction port 22.
  • the centrifugal fan 1 rotates, the air in the air-conditioned space 17 is sucked into the first suction port 21.
  • the air removed in the filter 8 is guided by the bell mouth 14 and is drawn into the centrifugal fan 1.
  • the centrifugal fan 1 the air sucked upward from below is blown out horizontally and radially outward.
  • the blown air passes through the heat exchanger 3 and exchanges heat with the refrigerant, and the humidity is adjusted. Then, the air changes its direction downward and is blown out to the air-conditioned space 17 through the outlet 9.
  • the wind guide wall 23 is provided at the second suction port 22, it is possible to suppress the sound inside the main body 20 from leaking to the outside via the second suction port 22. be able to. Therefore, even if the second suction port 22 is formed in the panel 25 in order to reduce ventilation resistance and secure energy saving, sound insulation can be improved. That is, the indoor unit 200 can improve sound insulation while securing energy saving.
  • the suction panel 7 according to the first embodiment is a flat plate instead of a frame
  • the inside of the main body 20 is made hard to be visually recognized by covering an opening inside the frame-shaped decorative panel 6, and the inside of the main body 20. Intercept the sound generated by
  • the installation of the suction panel 7 reduces the area of the opening 20a.
  • a dead water area is formed on the inner surface of the main body 20 of the suction panel 7 due to the separation of the airflow and the ventilation resistance increases, the input power of the fan motor 2 increases, and there is a possibility that the energy saving performance may deteriorate.
  • the frame-shaped suction panel 7 is employed, whereby the second suction port 22 inside the frame-shaped suction panel 7 is formed, so that the suction area is increased and the dead water area is increased. Is reduced. Thereby, the ventilation resistance is reduced, and an increase in the input power of the fan motor 2 is suppressed.
  • the sound generated from the blower 18 or the like may leak to the outside through the second suction port 22. Therefore, in the first embodiment, the sound inside the main body 20 is directly radiated to the outside through the second suction port 22 by providing the wind guide wall 23 in the second suction port 22. Can be suppressed.
  • the first embodiment can achieve both improvement in energy saving and improvement in sound insulation.
  • the air guide wall 23 has an area equal to or larger than the opening area of the second suction port 22, and is installed so as to cover the second suction port 22 in a plan view from below the indoor unit 200. .
  • the filter 8 on which dust accumulates can be blindfolded.
  • FIG. 3 is a side perspective view showing an indoor unit 200a according to a first modification of the first embodiment of the present invention.
  • the wind guide wall 23 and the suction panel 7 are formed integrally.
  • the air guide wall 23 can be provided in the indoor unit 200 without increasing the number of components.
  • FIG. 4 is a side perspective view showing an indoor unit 200b according to a second modification of the first embodiment of the present invention.
  • the wind guide wall 23 has a convex shape protruding toward the air-conditioned space 17. Accordingly, the dead water area that can be generated on the surface of the air guide wall 23 on the side of the blower 18 can be reduced in the same manner as the suction panel 7 reduces the dead water area of the surface of the suction panel 7 on the side of the blower 18.
  • FIG. 5 is a bottom view showing an indoor unit 200c according to a third modification of the first embodiment of the present invention.
  • the second suction port 22 is formed radially outside the bell mouth opening 14a on the downstream side of the bell mouth 14.
  • the noise generated from the blower 18 passes through the bell mouth opening 14a of the bell mouth 14 and is radiated to the outside.
  • the third modification can further reduce noise.
  • FIG. 6 is a side perspective view showing an indoor unit 201 according to a fourth modification of the first embodiment of the present invention.
  • the wind guide wall 23a has a width equal to or larger than the width of the second suction port 22 in a side sectional view. Thereby, the inside of the indoor unit 200 becomes more difficult to see.
  • FIG. FIG. 7 is a side perspective view showing an indoor unit 200d according to Embodiment 2 of the present invention.
  • the second embodiment is different from the first embodiment in that the indoor unit 200d includes the sound absorbing member 30.
  • the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. The description will focus on differences from the first embodiment.
  • the sound absorbing member 30 is provided on the surface of the suction panel 7 on the side of the fan 18 and the surface of the air guide wall 23 on the side of the fan 18 to absorb sound.
  • the sound absorbing member 30 is, for example, a porous member.
  • the sound absorbing member 30 is, for example, styrene foam, and has a predetermined thickness.
  • the provision of the sound absorbing member 30 can further suppress the noise generated from the blower 18 from being radiated to the outside, as compared with the case where the sound absorbing member 30 is not provided.
  • the air guide wall 23 after passing through the second suction port 22 on the surface on the blower 18 side is formed. Air flow separation is suppressed. Thereby, the effective air path after passing through the second suction port 22 is enlarged, and the ventilation resistance is reduced.
  • the indoor unit 200d may use a part of the sound absorbing member 30 as the wind guide wall 23.
  • FIG. FIG. 8 is a side perspective view showing an indoor unit 200e according to Embodiment 3 of the present invention.
  • the third embodiment is different from the first embodiment in the position of the baffle wall 23.
  • the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. The description will focus on differences from the first embodiment.
  • the wind guide wall 23 is provided closer to the air-conditioned space 17 than the suction panel 7.
  • a dead water area that can be generated on the surface of the air guide wall 23 on the side of the blower 18 can be further suppressed.
  • the ventilation resistance in the second suction port 22 can be further suppressed as compared with the first embodiment, so that the energy saving can be improved.
  • FIG. 9 is a side perspective view showing an indoor unit 200f according to a modified example of Embodiment 3 of the present invention.
  • the suction panel 7 is inclined toward the blower 18 from the first suction port 21 toward the second suction port 22. That is, the height of the end of the suction panel 7 on the first suction port 21 side and the height of the wind guide wall 23 can be made uniform.
  • the height of the end of the suction panel 7 on the second suction port 22 side is different from the height of the wind guide wall 23. Therefore, the air guide wall 23 can be installed without changing the dimension of the indoor unit 200f in the height direction.
  • FIG. 10 is a circuit diagram showing a refrigeration cycle apparatus 1000 according to Embodiment 4 of the present invention.
  • the refrigeration cycle apparatus 1000 is, for example, an air conditioner that adjusts air in a space 17 to be air-conditioned, and includes an outdoor unit 100 and an indoor unit 200.
  • the outdoor unit 100 and the indoor unit 200 are connected by a gas pipe 300 through which a gas refrigerant flows and a liquid pipe 400 through which a liquid refrigerant or a gas-liquid two-phase refrigerant flows.
  • the outdoor unit 100 includes a compressor 101, a flow path switching device 102, an outdoor heat exchanger 103, an outdoor blower 104, and an expansion unit 105.
  • the indoor unit 200 is provided with the heat exchanger 3 and the blower 18.
  • the refrigerant circuit is configured by connecting the compressor 101, the flow path switching device 102, the outdoor heat exchanger 103, the expansion unit 105, and the heat exchanger 3 by connecting pipes.
  • the compressor 101 sucks a low-temperature and low-pressure refrigerant, compresses the sucked refrigerant into a high-temperature and high-pressure refrigerant, and discharges the refrigerant.
  • the compressor 101 includes, for example, an inverter device, and changes the operation frequency arbitrarily to finely change the capacity of the compressor 101.
  • the capacity of the compressor 101 is the amount of refrigerant to be sent out per unit time.
  • the flow path switching device 102 switches the direction in which the refrigerant flows in the refrigerant circuit based on an instruction from a control device (not shown), and is, for example, a four-way valve.
  • the outdoor heat exchanger 103 exchanges heat between outdoor air and a refrigerant, for example.
  • the outdoor heat exchanger 103 functions as a condenser during the cooling operation, and functions as an evaporator during the heating operation.
  • the outdoor blower 104 is a device that sends outdoor air to the outdoor heat exchanger 103.
  • the outdoor blower 104 may be, for example, the same centrifugal fan 1 as the blower 18.
  • the outdoor blower 104 may finely change the rotation speed of the centrifugal fan 1 by arbitrarily changing the operating frequency of the motor using an inverter device or the like.
  • the expansion section 105 is a pressure reducing valve or an expansion valve that decompresses and expands the refrigerant.
  • the expansion section 105 is, for example, an electronic expansion valve whose opening is adjusted.
  • the heat exchanger 3 exchanges heat, for example, between room air and a refrigerant.
  • the heat exchanger 3 functions as an evaporator during the cooling operation, and functions as a condenser during the heating operation.
  • the blower 18 is a device that sends indoor air to the heat exchanger 3.
  • the operation speed of the blower 18 is set by, for example, a user.
  • cooling operation Next, an operation mode of the refrigeration cycle apparatus 1000 will be described.
  • the cooling operation In the cooling operation, the refrigerant drawn into the compressor 101 is compressed by the compressor 101 and discharged in a high-temperature and high-pressure gas state.
  • the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 101 passes through the flow path switching device 102, flows into the outdoor heat exchanger 103 acting as a condenser, and in the outdoor heat exchanger 103, the outdoor blower The heat is exchanged with the outdoor air sent by 104 to condense and liquefy.
  • the condensed refrigerant in the liquid state flows into the expansion section 105, and is expanded and decompressed in the expansion section 105 to become a low-temperature and low-pressure refrigerant in a gas-liquid two-phase state.
  • the refrigerant in the gas-liquid two-phase state flows into the heat exchanger 3 acting as an evaporator, and in the heat exchanger 3, heat exchanges with the indoor air sent by the blower 18 to evaporate.
  • the room air is cooled and the room is cooled.
  • the evaporated low-temperature and low-pressure gaseous refrigerant passes through the flow switching device 102 and is sucked into the compressor 101.
  • the heating operation will be described.
  • the refrigerant drawn into the compressor 101 is compressed by the compressor 101 and discharged in a high-temperature and high-pressure gas state.
  • the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 101 passes through the flow path switching device 102, flows into the heat exchanger 3 acting as a condenser, and is blown by the blower 18 in the heat exchanger 3.
  • the condensed refrigerant in the liquid state flows into the expansion section 105, and is expanded and decompressed in the expansion section 105 to become a low-temperature, low-pressure gas-liquid two-phase refrigerant.
  • the refrigerant in the gas-liquid two-phase state flows into the outdoor heat exchanger 103 acting as an evaporator, where the refrigerant exchanges heat with outdoor air sent by the outdoor blower 104 to evaporate.
  • the evaporated low-temperature and low-pressure gaseous refrigerant passes through the flow switching device 102 and is sucked into the compressor 101.
  • the outdoor unit 100 As described above, by configuring the outdoor unit 100 as the outdoor fan 104 using the blower 18 of the first to third embodiments, the outdoor unit 100 with high efficiency can be realized.
  • the indoor unit 200 may be the indoor unit 200 of the refrigeration cycle apparatus 1000, for example, the indoor unit 200 of an air conditioner. Further, the indoor unit 200 may be an air blower that does not include the heat exchanger 3. As described above, the indoor unit 200 can be applied to various devices or facilities in which the blower 18 is installed. Further, in the above-described embodiment, the case where the blower 18 is a turbo fan is illustrated, but other blowers such as a sirocco fan, a propeller fan, and a once-through fan may be used.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air-Flow Control Members (AREA)

Abstract

This indoor unit is provided with: a unit body which has an opening formed on the side of a to-be-air-conditioned space and which is to be mounted to a mounting position; a panel that covers the opening of the unit body and that has formed therein a first inlet for drawing in air, a second inlet which is for drawing air and which is formed on a side closer to the center of the unit body than the first inlet, and an outlet which is for blowing out the air drawn in from the first and second inlets; a blower which forms a flow of the air that is drawn in from the first and second inlets and blown out through the outlet; and an air guiding wall that is provided so as to cover at least a part of the second inlet of the panel.

Description

室内機及び冷凍サイクル装置Indoor unit and refrigeration cycle device
　本発明は、第１の吸込み口と第１の吸込み口よりも内側に設けられた第２の吸込み口とが形成されたパネルを備える室内機及び冷凍サイクル装置に関する。 The present invention relates to an indoor unit and a refrigeration cycle device including a panel in which a first suction port and a second suction port provided inside the first suction port are formed.
　従来、例えば天井埋込形の空気調和機の室内機において、筐体の下部に形成された吸込み口の中央に中央部材である吸込みパネルが設置されたものが知られている。吸込みパネルは、吸込み口を覆うことによって、筐体の内部を視認し難くすると共に、筐体の内部から生じる音を遮る。このように、従来、意匠性を確保しつつ、騒音を低減している空気調和機の室内機が提案されている。しかし、吸込みパネルが設置されることによって、吸込み口の面積が縮小し、また、吸込みパネルの筐体の内部側の面に気流の剥離による死水域が生じて通風抵抗が大きくなる。このため、ファンモータの入力電力が増大し、省エネ性が悪化する。 Conventionally, for example, in an indoor unit of an air conditioner of a buried ceiling type, there is known an air conditioner in which a suction panel as a central member is installed at the center of a suction port formed in a lower portion of a housing. The suction panel makes it difficult to visually recognize the inside of the housing by covering the suction port, and blocks sound generated from the inside of the housing. As described above, conventionally, an indoor unit of an air conditioner that has reduced noise while ensuring designability has been proposed. However, by installing the suction panel, the area of the suction port is reduced, and a dead water area is formed on the inner surface of the housing of the suction panel due to the separation of airflow, thereby increasing ventilation resistance. For this reason, the input power of the fan motor increases, and the energy saving performance deteriorates.
　省エネ性を確保することを目的として、特許文献１には、環状の吸込み口の中央に設けられた吸込みパネルに補助開口が形成された天井埋込形の室内機が開示されている。これにより、特許文献１の室内機は、吸込み面積の拡大及び死水域の縮小が図られ、通風抵抗が低減され、ファンモータの入力電力の増大を抑制しようとするものである。 (4) For the purpose of ensuring energy saving, Patent Literature 1 discloses a ceiling-embedded indoor unit in which an auxiliary opening is formed in a suction panel provided at the center of an annular suction port. As a result, the indoor unit of Patent Literature 1 aims to increase the suction area and reduce the dead water area, reduce the ventilation resistance, and suppress the increase in the input power of the fan motor.
特開２０１３－１０８７１６号公報JP 2013-108716 A
　しかしながら、特許文献１に開示された室内機は、省エネ性を確保するために補助開口が設けられていることによって、送風機等から生じる音が補助開口を通って外部に漏れ易くなる。従って、特許文献１は、吸込みパネルの遮音性が低下して、低騒音効果を充分に得ることができない。 However, in the indoor unit disclosed in Patent Literature 1, since the auxiliary opening is provided to ensure energy saving, sound generated from a blower or the like easily leaks to the outside through the auxiliary opening. Therefore, according to Patent Document 1, the sound insulation of the suction panel is reduced, and the noise reduction effect cannot be sufficiently obtained.
　本発明は、上記のような課題を解決するためになされたもので、省エネ性を確保しつつ遮音性が向上する室内機及び冷凍サイクル装置を提供するものである。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an indoor unit and a refrigeration cycle device that improve sound insulation while ensuring energy saving.
　本発明に係る室内機は、空調対象空間側に開口部が形成され、被取付部に取り付けられる本体と、空気を吸い込む第１の吸込み口と、第１の吸込み口よりも本体の中央側に形成され空気を吸い込む第２の吸込み口と、第１の吸込み口及び第２の吸込み口から吸い込まれた空気を吹き出す吹出し口とが形成され、本体の開口部を覆うパネルと、第１の吸込み口及び第２の吸込み口から吸い込まれ吹出し口に吹き出される空気の流れを形成する送風機と、パネルの第２の吸込み口の少なくとも一部を覆うように設けられた導風壁と、を備える。 In the indoor unit according to the present invention, an opening is formed on the air-conditioned space side, a main body attached to the mounted portion, a first suction port for sucking air, and a central side of the main body more than the first suction port. A panel formed with a second suction port formed to suck air, a blowout port for blowing air sucked from the first suction port and the second suction port, and covering an opening of the main body; A blower configured to form a flow of air sucked from the mouth and the second suction port and blown out to the outlet, and a wind guide wall provided so as to cover at least a part of the second suction port of the panel. .
　本発明によれば、導風壁が第２の吸込み口に設けられているため、第２の吸込み口を介して本体の内部の音が外部に漏れることを抑制することができる。従って、通風抵抗を減らして省エネ性を確保するために、パネルに第２の吸込み口が形成されても、遮音性を向上させることができる。即ち、室内機は、省エネ性を確保しつつ遮音性を向上させることができる。 According to the present invention, since the wind guide wall is provided at the second suction port, it is possible to suppress the sound inside the main body from leaking to the outside through the second suction port. Therefore, even if the second suction port is formed in the panel in order to reduce the ventilation resistance and secure energy saving, the sound insulation can be improved. That is, the indoor unit can improve the sound insulation while ensuring energy saving.
本発明の実施の形態１に係る室内機２００を示す下面図である。FIG. 2 is a bottom view showing the indoor unit 200 according to Embodiment 1 of the present invention. 本発明の実施の形態１に係る室内機２００を示す側面透視図である。FIG. 2 is a side perspective view showing the indoor unit 200 according to Embodiment 1 of the present invention. 本発明の実施の形態１の第１変形例に係る室内機２００ａを示す側面透視図である。FIG. 6 is a side perspective view showing an indoor unit 200a according to a first modification of the first embodiment of the present invention. 本発明の実施の形態１の第２変形例に係る室内機２００ｂを示す側面透視図である。FIG. 10 is a side perspective view showing an indoor unit 200b according to a second modification of the first embodiment of the present invention. 本発明の実施の形態１の第３変形例に係る室内機２００ｃを示す下面図である。It is a bottom view which shows the indoor unit 200c which concerns on the 3rd modification of Embodiment 1 of this invention. 本発明の実施の形態１の第４変形例に係る室内機２０１を示す側面透視図である。FIG. 14 is a side perspective view showing an indoor unit 201 according to a fourth modified example of Embodiment 1 of the present invention. 本発明の実施の形態２に係る室内機２００ｄを示す側面透視図である。It is a side see-through view which shows the indoor unit 200d which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る室内機２００ｅを示す側面透視図である。It is a side see-through view which shows the indoor unit 200e which concerns on Embodiment 3 of this invention. 本発明の実施の形態３の変形例に係る室内機２００ｆを示す側面透視図である。It is a side see-through view which shows the indoor unit 200f which concerns on the modification of Embodiment 3 of this invention. 本発明の実施の形態４に係る冷凍サイクル装置１０００を示す回路図である。FIG. 13 is a circuit diagram showing a refrigeration cycle apparatus 1000 according to Embodiment 4 of the present invention.
実施の形態１．
　以下、本発明に係る室内機及び冷凍サイクル装置の実施の形態について、図面を参照しながら説明する。図１は、本発明の実施の形態１に係る室内機２００を示す下面図であり、図２は、本発明の実施の形態１に係る室内機２００を示す側面透視図である。室内機２００は、例えばパッケージ型エアコンの室内機２００である。図１及び図２に示すように、室内機２００は、本体２０と、パネル２５と、風向板１３と、熱交換器３と、ドレンパン１６と、フィルタ８と、送風機１８と、ベルマウス１４と、導風壁２３とを備えている。 Embodiment 1 FIG.
Hereinafter, embodiments of an indoor unit and a refrigeration cycle device according to the present invention will be described with reference to the drawings. FIG. 1 is a bottom view showing the indoor unit 200 according to Embodiment 1 of the present invention, and FIG. 2 is a side perspective view showing the indoor unit 200 according to Embodiment 1 of the present invention. The indoor unit 200 is, for example, an indoor unit 200 of a package type air conditioner. As shown in FIGS. 1 and 2, the indoor unit 200 includes a main body 20, a panel 25, a wind direction plate 13, a heat exchanger 3, a drain pan 16, a filter 8, a blower 18, and a bell mouth 14. , A wind guide wall 23.
　（本体２０）
　本体２０は、天井面等の被取付部１５に取り付けられており、有底角筒状の筐体である。本体２０は、被取付部１５の奥側に配置される長方形状の本体天板５と、本体天板５の４辺から空調対象空間１７側に延びる４個の本体側板４とを有し、本体天板５に対向する側が開口部２０ａとなっている。このように、本実施の形態１は、本体２０が被取付部１５の奥側に埋め込まれた天井埋込形の空気調和機の室内機２００について例示している。 (Body 20)
The main body 20 is attached to the attached portion 15 such as a ceiling surface, and is a bottomed rectangular cylindrical housing. The main body 20 includes a main body top plate 5 having a rectangular shape disposed on the back side of the attached portion 15, and four main body side plates 4 extending from four sides of the main body top plate 5 to the air-conditioned space 17 side, The side facing the main body top plate 5 is an opening 20a. As described above, Embodiment 1 exemplifies the indoor unit 200 of the ceiling-embedded air conditioner in which the main body 20 is embedded on the back side of the attached portion 15.
　（パネル２５）
　パネル２５は、本体２０の開口部２０ａを覆うものであり、化粧パネル６と、吸込みパネル７とを有している。パネル２５は、例えば板金でもよいし、樹脂でもよい。化粧パネル６は、例えば本体２０に着脱自在に取り付けられる矩形枠状の部材であり、本体２０の開口部２０ａのうち縁部を覆っている。化粧パネル６の長辺側の両端部には、長手方向に延びる孔が形成されている。なお、化粧パネル６は、被取付部１５とほぼ同一面に位置している。吸込みパネル７は、例えば枠状の化粧パネル６の内部に配置されて化粧パネル６に着脱自在に取り付けられる矩形枠状の部材であり、本体２０の開口部２０ａのうち中央を覆っている。吸込みパネル７の空調対象空間１７側の面は、略水平面となっている。 (Panel 25)
The panel 25 covers the opening 20a of the main body 20, and has the decorative panel 6 and the suction panel 7. The panel 25 may be, for example, a sheet metal or a resin. The decorative panel 6 is, for example, a rectangular frame-shaped member detachably attached to the main body 20, and covers an edge of the opening 20 a of the main body 20. At both ends on the long side of the decorative panel 6, holes extending in the longitudinal direction are formed. Note that the decorative panel 6 is located on substantially the same plane as the mounted portion 15. The suction panel 7 is, for example, a rectangular frame-shaped member that is disposed inside the frame-shaped decorative panel 6 and is detachably attached to the decorative panel 6, and covers the center of the opening 20 a of the main body 20. The surface of the suction panel 7 on the air-conditioned space 17 side is substantially horizontal.
　ここで、本体２０の開口部２０ａのうち、化粧パネル６と吸込みパネル７との間は第１の吸込み口２１となっており、第１の吸込み口２１は、空調対象空間１７の空気が吸い込まれる開口である。また、本体２０の開口部２０ａのうち、枠状の吸込みパネル７の内側は第２の吸込み口２２となっており、第２の吸込み口２２も、空調対象空間１７の空気が吸い込まれる開口である。即ち、第２の吸込み口２２は、第１の吸込み口２１よりも本体２０の中央側に形成されている。更に、本体２０の開口部２０ａのうち、化粧パネル６の長辺側の縁部に沿う孔は、吹出し口９となっており、吹出し口９は、第１の吸込み口２１及び第２の吸込み口２２から吸い込まれた空気が吹き出される開口である。なお、本実施の形態１では、第１の吸込み口２１が２個の場合について例示しているが、第１の吸込み口２１は１個でもよいし、３個以上でもよい。また、第２の吸込み口２２が１個の場合について例示しているが、第２の吸込み口２２は２個以上でもよい。更に、吹出し口９が２個の場合について例示しているが、吹出し口９は１個でもよいし、３個以上でもよい。例えば、吹出し口９は、化粧パネル６の４辺の縁部に沿う孔として、４個設けてもよい。 Here, among the openings 20 a of the main body 20, a portion between the decorative panel 6 and the suction panel 7 serves as a first suction port 21, and the first suction port 21 sucks air in the air-conditioned space 17. Opening. Further, of the openings 20a of the main body 20, the inside of the frame-shaped suction panel 7 is a second suction port 22, and the second suction port 22 is also an opening into which air in the air-conditioned space 17 is sucked. is there. That is, the second suction port 22 is formed closer to the center of the main body 20 than the first suction port 21 is. Further, of the openings 20 a of the main body 20, holes along the edge on the long side of the decorative panel 6 are outlets 9, and the outlets 9 are the first inlet 21 and the second inlet 21. The opening from which the air sucked from the mouth 22 is blown out. In the first embodiment, the case where the number of the first suction ports 21 is two is illustrated, but the number of the first suction ports 21 may be one, or three or more. Further, the case where the number of the second suction ports 22 is one is illustrated, but the number of the second suction ports 22 may be two or more. Furthermore, although the case where there are two outlets 9 is illustrated, the number of outlets 9 may be one, or three or more. For example, four outlets 9 may be provided as holes along four edges of the decorative panel 6.
　（風向板１３）
　風向板１３は、各吹出し口９に設けられており、吹出し口９から吹き出す空気の方向を調整する。 (Windboard 13)
The wind direction plate 13 is provided at each outlet 9 and adjusts the direction of the air blown out from the outlet 9.
　（熱交換器３）
　熱交換器３は、送風機１８の径方向外側において第１の吸込み口２１及び第２の吸込み口２２と吹出し口９とを接続する風路に設けられており、第１の吸込み口２１及び第２の吸込み口２２から吸い込まれた空気を、冷媒との間で熱交換させる。熱交換器３は、例えば複数のフィン（図示せず）と、複数の伝熱管（図示せず）とを有するフィンアンドチューブ型の熱交換器３である。複数のフィンは、水平方向に所定の間隔を空けて配置されており、複数の伝熱管は、複数のフィンを貫通している。伝熱管は、ガス配管３００及び液配管４００によって室外機１００（図１０参照）に接続されている。これにより、熱交換器３には、室外機１００から冷却された冷媒又は加熱された冷媒が供給される。ドレンパン１６は、熱交換器３の下方に設けられており、熱交換器３において空調対象空間１７の空気が冷却されて生じる結露水を受ける。 (Heat exchanger 3)
The heat exchanger 3 is provided in an air path connecting the first suction port 21 and the second suction port 22 to the blowout port 9 on the radial outside of the blower 18, and the first suction port 21 and the second The air sucked from the second suction port 22 is exchanged with the refrigerant. The heat exchanger 3 is, for example, a fin-and-tube heat exchanger 3 having a plurality of fins (not shown) and a plurality of heat transfer tubes (not shown). The plurality of fins are arranged at predetermined intervals in the horizontal direction, and the plurality of heat transfer tubes penetrate the plurality of fins. The heat transfer tube is connected to the outdoor unit 100 (see FIG. 10) by a gas pipe 300 and a liquid pipe 400. Thereby, the cooled refrigerant or the heated refrigerant is supplied from the outdoor unit 100 to the heat exchanger 3. The drain pan 16 is provided below the heat exchanger 3, and receives dew water generated by cooling the air in the air-conditioned space 17 in the heat exchanger 3.
　（フィルタ８）
　フィルタ８は、吸込みパネル７と送風機１８との間に設けられており、第１の吸込み口２１及び第２の吸込み口２２から吸い込まれた空気を除塵する。フィルタ８の外形は、吸込みパネル７の外形よりも小さく、フィルタ８は室内機２００の下方からの平面視で隠れている。これにより、ユーザ等が下方から室内機２００を視認しても、第１の吸込み口２１を介してフィルタ８はみえない。 (Filter 8)
The filter 8 is provided between the suction panel 7 and the blower 18 and removes air sucked from the first suction port 21 and the second suction port 22. The outer shape of the filter 8 is smaller than the outer shape of the suction panel 7, and the filter 8 is hidden in plan view from below the indoor unit 200. Thereby, even if the user or the like visually recognizes the indoor unit 200 from below, the filter 8 cannot be seen through the first suction port 21.
　（送風機１８）
　送風機１８は、本体２０の内部の中央に設けられており、第１の吸込み口２１及び第２の吸込み口２２から吸い込まれ吹出し口９に吹き出される空気の流れを形成する。送風機１８は、ファンモータ２と、シャフト２ａと、遠心ファン１とを有している。ファンモータ２は、本体天板５の下面に支持されており、遠心ファン１を回転駆動するものである。シャフト２ａは、ファンモータ２から下方に延びる回転軸である。遠心ファン１は、例えばターボファンであり、シャフト２ａとの固定部であるボスを有する主板１０と、複数枚の羽根１２と、風路を形成する側板１１とを有している。羽根１２は、ファンモータ２の回転駆動により回転する。遠心ファン１は、第１の吸込み口２１及び第２の吸込み口２２から本体２０の内部に空気を吸い込み、吸い込んだ空気を吹出し口９から空調対象空間１７である室内に吹き出させる。 (Blower 18)
The blower 18 is provided at the center inside the main body 20, and forms a flow of air sucked from the first suction port 21 and the second suction port 22 and blown out to the blowout port 9. The blower 18 has a fan motor 2, a shaft 2a, and the centrifugal fan 1. The fan motor 2 is supported on the lower surface of the main body top plate 5 and rotates the centrifugal fan 1. The shaft 2a is a rotating shaft extending downward from the fan motor 2. The centrifugal fan 1 is, for example, a turbo fan, and includes a main plate 10 having a boss which is a fixing portion to the shaft 2a, a plurality of blades 12, and a side plate 11 forming an air passage. The blades 12 are rotated by the rotation of the fan motor 2. The centrifugal fan 1 sucks air from the first suction port 21 and the second suction port 22 into the inside of the main body 20, and blows out the sucked air from the outlet 9 into the room, which is the air-conditioned space 17.
　（ベルマウス１４）
　ベルマウス１４は、送風機１８の遠心ファン１と吸込みパネル７との間に設けられ、送風機１８に送られる空気の上流側から下流側に向かって漸次縮径する曲面筒状の部材である。 (Bellmouth 14)
The bell mouth 14 is a curved cylindrical member that is provided between the centrifugal fan 1 of the blower 18 and the suction panel 7 and gradually reduces the diameter of the air sent to the blower 18 from the upstream side to the downstream side.
　（導風壁２３）
　導風壁２３は、第２の吸込み口２２の少なくとも一部を覆うように設けられ、第２の吸込み口２２を介して本体２０の内部の音が外部に漏れることを抑制する。導風壁２３は、例えば支持部材（図示せず）によって吸込みパネル７に取り付けられており、室内機２００の下方からの平面視で第２の吸込み口２２を覆うように設置されている。導風壁２３は、吸込みパネル７とは高さが異なる位置に設けられており、本実施の形態１では、導風壁２３は、吸込みパネル７よりも送風機１８側に設けられている。なお、本実施の形態１では、導風壁２３が、側面断面視において第２の吸込み口２２の幅（水平方向の長さ）と同等の幅を有している。これにより、ユーザ等が下方から室内機２００を視認しても、第２の吸込み口２２を介して室内機２００の内部がみえない。即ち、室内機２００の意匠性を高めることができる。更に、本実施の形態１では、導風壁２３は、第２の吸込み口２２の開口面積と同等の面積を有している。これにより、導風壁２３が第２の吸込み口２２の幅と同等の幅を有するのみよりも、更に室内機２００の意匠性を改善することができる。また、導風壁２３は、第２の吸込み口２２の開口面積以上の面積を有していてもよい。これにより、室内機２００の内部が更にみえにくくなる。 (Wind guide wall 23)
The wind guide wall 23 is provided so as to cover at least a part of the second suction port 22, and suppresses the sound inside the main body 20 from leaking to the outside through the second suction port 22. The air guide wall 23 is attached to the suction panel 7 by, for example, a support member (not shown), and is installed so as to cover the second suction port 22 in plan view from below the indoor unit 200. The air guide wall 23 is provided at a position different in height from the suction panel 7. In the first embodiment, the air guide wall 23 is provided closer to the blower 18 than the suction panel 7. In the first embodiment, the wind guide wall 23 has a width equivalent to the width (length in the horizontal direction) of the second suction port 22 in a side sectional view. Thereby, even if the user or the like visually recognizes the indoor unit 200 from below, the inside of the indoor unit 200 cannot be seen through the second suction port 22. That is, the design of the indoor unit 200 can be improved. Further, in the first embodiment, the air guide wall 23 has an area equal to the opening area of the second suction port 22. Thus, the design of the indoor unit 200 can be further improved than when the wind guide wall 23 only has a width equal to the width of the second suction port 22. Further, the wind guide wall 23 may have an area larger than the opening area of the second suction port 22. Thereby, the inside of the indoor unit 200 becomes more difficult to see.
　次に、室内機２００における空気の流れについて説明する。遠心ファン１が回転すると、空調対象空間１７の空気は、第１の吸込み口２１に吸い込まれる。そして、フィルタ８において除塵された空気は、ベルマウス１４によってガイドされて、遠心ファン１に吸い込まれる。遠心ファン１において、下方から上方に向かって吸い込まれた空気は、水平方向且つ径方向の外側に吹き出される。吹き出された空気は、熱交換器３を通過して冷媒と熱交換されると共に湿度が調整される。そして、空気は、下方に向きを変更して、吹出し口９を通って空調対象空間１７に吹き出される。 Next, the flow of air in the indoor unit 200 will be described. When the centrifugal fan 1 rotates, the air in the air-conditioned space 17 is sucked into the first suction port 21. The air removed in the filter 8 is guided by the bell mouth 14 and is drawn into the centrifugal fan 1. In the centrifugal fan 1, the air sucked upward from below is blown out horizontally and radially outward. The blown air passes through the heat exchanger 3 and exchanges heat with the refrigerant, and the humidity is adjusted. Then, the air changes its direction downward and is blown out to the air-conditioned space 17 through the outlet 9.
　本実施の形態１によれば、導風壁２３が第２の吸込み口２２に設けられているため、第２の吸込み口２２を介して本体２０の内部の音が外部に漏れることを抑制することができる。従って、通風抵抗を減らして省エネ性を確保するために、パネル２５に第２の吸込み口２２が形成されても、遮音性を向上させることができる。即ち、室内機２００は、省エネ性を確保しつつ遮音性を向上させることができる。 According to the first embodiment, since the wind guide wall 23 is provided at the second suction port 22, it is possible to suppress the sound inside the main body 20 from leaking to the outside via the second suction port 22. be able to. Therefore, even if the second suction port 22 is formed in the panel 25 in order to reduce ventilation resistance and secure energy saving, sound insulation can be improved. That is, the indoor unit 200 can improve sound insulation while securing energy saving.
　本実施の形態１の吸込みパネル７が枠状ではなく平板上である場合、枠状の化粧パネル６の内部の開口を覆うことによって、本体２０の内部を視認し難くすると共に、本体２０の内部から生じる音を遮る。ここで、吸込みパネル７が設置されることによって、開口部２０ａの面積が縮小する。また、吸込みパネル７の本体２０の内部側の面に気流の剥離による死水域が生じて通風抵抗が大きくなるため、ファンモータ２の入力電力が増大し、省エネ性が悪化するおそれがある。そこで、本実施の形態１では、枠状の吸込みパネル７が採用されており、これにより、枠状の吸込みパネル７の内部の第２の吸込み口２２が形成され、吸込み面積の拡大及び死水域の縮小が図られる。これにより、通風抵抗が低減され、ファンモータ２の入力電力の増大を抑制する。しかし、この状態では、送風機１８等から生じる音が第２の吸込み口２２を通って外部に漏れるおそれがある。そこで、本実施の形態１では、導風壁２３が第２の吸込み口２２に設けられることによって、第２の吸込み口２２を介して本体２０の内部の音が直接外部に放射されることを抑制することができる。このように、本実施の形態１は、省エネ性の向上及び遮音性の向上を両立させることができる。 When the suction panel 7 according to the first embodiment is a flat plate instead of a frame, the inside of the main body 20 is made hard to be visually recognized by covering an opening inside the frame-shaped decorative panel 6, and the inside of the main body 20. Intercept the sound generated by Here, the installation of the suction panel 7 reduces the area of the opening 20a. In addition, since a dead water area is formed on the inner surface of the main body 20 of the suction panel 7 due to the separation of the airflow and the ventilation resistance increases, the input power of the fan motor 2 increases, and there is a possibility that the energy saving performance may deteriorate. In view of this, in the first embodiment, the frame-shaped suction panel 7 is employed, whereby the second suction port 22 inside the frame-shaped suction panel 7 is formed, so that the suction area is increased and the dead water area is increased. Is reduced. Thereby, the ventilation resistance is reduced, and an increase in the input power of the fan motor 2 is suppressed. However, in this state, the sound generated from the blower 18 or the like may leak to the outside through the second suction port 22. Therefore, in the first embodiment, the sound inside the main body 20 is directly radiated to the outside through the second suction port 22 by providing the wind guide wall 23 in the second suction port 22. Can be suppressed. As described above, the first embodiment can achieve both improvement in energy saving and improvement in sound insulation.
　また、導風壁２３は、第２の吸込み口２２の開口面積以上の面積を有しており、室内機２００の下方からの平面視で第２の吸込み口２２を覆うように設置されている。このため、埃が堆積するフィルタ８を目隠しすることができる。このように、本実施の形態１では、省エネ性の向上、遮音性の向上及び意匠性の向上を実現することができる。 Further, the air guide wall 23 has an area equal to or larger than the opening area of the second suction port 22, and is installed so as to cover the second suction port 22 in a plan view from below the indoor unit 200. . For this reason, the filter 8 on which dust accumulates can be blindfolded. As described above, in the first embodiment, it is possible to achieve an improvement in energy saving, an improvement in sound insulation, and an improvement in design.
　（第１変形例）
　図３は、本発明の実施の形態１の第１変形例に係る室内機２００ａを示す側面透視図である。図３に示すように、第１変形例は、導風壁２３と吸込みパネル７とが一体的に形成されている。これにより、室内機２００において、部品点数を増やすことなく、導風壁２３を設けることができる。 (First Modification)
FIG. 3 is a side perspective view showing an indoor unit 200a according to a first modification of the first embodiment of the present invention. As shown in FIG. 3, in the first modified example, the wind guide wall 23 and the suction panel 7 are formed integrally. Thus, the air guide wall 23 can be provided in the indoor unit 200 without increasing the number of components.
　（第２変形例）
　図４は、本発明の実施の形態１の第２変形例に係る室内機２００ｂを示す側面透視図である。図４に示すように、第２変形例は、導風壁２３が空調対象空間１７側に突出した凸形状をなしている。これにより、吸込みパネル７が吸込みパネル７の送風機１８側の面の死水域を縮小することと同様に、導風壁２３の送風機１８側の面に生じ得る死水域を縮小することができる。 (Second Modification)
FIG. 4 is a side perspective view showing an indoor unit 200b according to a second modification of the first embodiment of the present invention. As shown in FIG. 4, in the second modified example, the wind guide wall 23 has a convex shape protruding toward the air-conditioned space 17. Accordingly, the dead water area that can be generated on the surface of the air guide wall 23 on the side of the blower 18 can be reduced in the same manner as the suction panel 7 reduces the dead water area of the surface of the suction panel 7 on the side of the blower 18.
　（第３変形例）
　図５は、本発明の実施の形態１の第３変形例に係る室内機２００ｃを示す下面図である。図５に示すように、第３変形例は、第２の吸込み口２２が、ベルマウス１４の下流側のベルマウス開口１４ａよりも径方向の外側に形成されている。送風機１８から生じる騒音は、ベルマウス１４のベルマウス開口１４ａを通過して外部に放射される。このため、ベルマウス開口１４ａに対応する位置に第２の吸込み口２２がなければ、空調対象空間１７に放射される騒音は、第２の吸込み口２２から漏れない。従って、第３変形例は、騒音をより抑制することができる。 (Third Modification)
FIG. 5 is a bottom view showing an indoor unit 200c according to a third modification of the first embodiment of the present invention. As shown in FIG. 5, in the third modification, the second suction port 22 is formed radially outside the bell mouth opening 14a on the downstream side of the bell mouth 14. The noise generated from the blower 18 passes through the bell mouth opening 14a of the bell mouth 14 and is radiated to the outside. For this reason, unless the second suction port 22 is located at a position corresponding to the bell mouth opening 14 a, noise radiated to the air-conditioned space 17 does not leak from the second suction port 22. Therefore, the third modification can further reduce noise.
　（第４変形例）
　図６は、本発明の実施の形態１の第４変形例に係る室内機２０１を示す側面透視図である。図６に示すように、第４変形例は、導風壁２３ａが側面断面視において第２の吸込み口２２の幅以上の幅を有している。これにより、室内機２００の内部が更にみえにくくなる。 (Fourth modification)
FIG. 6 is a side perspective view showing an indoor unit 201 according to a fourth modification of the first embodiment of the present invention. As shown in FIG. 6, in the fourth modified example, the wind guide wall 23a has a width equal to or larger than the width of the second suction port 22 in a side sectional view. Thereby, the inside of the indoor unit 200 becomes more difficult to see.
実施の形態２．
　図７は、本発明の実施の形態２に係る室内機２００ｄを示す側面透視図である。本実施の形態２は、室内機２００ｄが吸音部材３０を備えている点で、実施の形態１と相違する。本実施の形態２では、実施の形態１と同一の部分は同一の符号を付して説明を省略し、実施の形態１との相違点を中心に説明する。 Embodiment 2 FIG.
FIG. 7 is a side perspective view showing an indoor unit 200d according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the indoor unit 200d includes the sound absorbing member 30. In the second embodiment, the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. The description will focus on differences from the first embodiment.
　図７に示すように、吸音部材３０は、吸込みパネル７の送風機１８側の面及び導風壁２３の送風機１８側の面に設けられ、音を吸収する。吸音部材３０は、例えば多孔質状の部材である。吸音部材３０は、例えば発泡スチロールであり、所定の厚みを有している。本実施の形態２では、吸音部材３０が設けられることによって、吸音部材３０が設けられていない場合に比べて、送風機１８から生じる騒音が外部に放射されることを更に抑制することができる。また、吸音部材３０の厚みによって、第２の吸込み口２２から送風機１８にかけての風路が整備されるため、第２の吸込み口２２を通過した後の導風壁２３の送風機１８側の面における気流の剥離が抑制される。これにより、第２の吸込み口２２を通過した後の有効風路が拡大し、通風抵抗が低減する。なお、室内機２００ｄは、吸音部材３０の一部を導風壁２３として使用してもよい。これにより、本実施の形態２は、部品点数を削減し、第２の吸込み口２２の形状を容易に形成することができる。 音 As shown in FIG. 7, the sound absorbing member 30 is provided on the surface of the suction panel 7 on the side of the fan 18 and the surface of the air guide wall 23 on the side of the fan 18 to absorb sound. The sound absorbing member 30 is, for example, a porous member. The sound absorbing member 30 is, for example, styrene foam, and has a predetermined thickness. In the second embodiment, the provision of the sound absorbing member 30 can further suppress the noise generated from the blower 18 from being radiated to the outside, as compared with the case where the sound absorbing member 30 is not provided. In addition, since the air path from the second suction port 22 to the blower 18 is improved by the thickness of the sound absorbing member 30, the air guide wall 23 after passing through the second suction port 22 on the surface on the blower 18 side is formed. Air flow separation is suppressed. Thereby, the effective air path after passing through the second suction port 22 is enlarged, and the ventilation resistance is reduced. Note that the indoor unit 200d may use a part of the sound absorbing member 30 as the wind guide wall 23. Thus, in the second embodiment, the number of components can be reduced, and the shape of the second suction port 22 can be easily formed.
実施の形態３．
　図８は、本発明の実施の形態３に係る室内機２００ｅを示す側面透視図である。本実施の形態３は、導風壁２３の位置が、実施の形態１と相違する。本実施の形態３では、実施の形態１と同一の部分は同一の符号を付して説明を省略し、実施の形態１との相違点を中心に説明する。 Embodiment 3 FIG.
FIG. 8 is a side perspective view showing an indoor unit 200e according to Embodiment 3 of the present invention. The third embodiment is different from the first embodiment in the position of the baffle wall 23. In the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. The description will focus on differences from the first embodiment.
　図８に示すように、導風壁２３は、吸込みパネル７よりも空調対象空間１７側に設けられている。これにより、本実施の形態３は、実施の形態１と同様の効果に加え、導風壁２３の送風機１８側の面に生じ得る死水域をより抑制することができる。また、本実施の形態３は、実施の形態１よりも更に第２の吸込み口２２における通風抵抗を抑制することができるため、省エネ性を向上させることができる。 風 As shown in FIG. 8, the wind guide wall 23 is provided closer to the air-conditioned space 17 than the suction panel 7. Thus, in the third embodiment, in addition to the same effect as in the first embodiment, a dead water area that can be generated on the surface of the air guide wall 23 on the side of the blower 18 can be further suppressed. In the third embodiment, the ventilation resistance in the second suction port 22 can be further suppressed as compared with the first embodiment, so that the energy saving can be improved.
　（変形例）
　図９は、本発明の実施の形態３の変形例に係る室内機２００ｆを示す側面透視図である。図９に示すように、変形例は、吸込みパネル７が第１の吸込み口２１側から第２の吸込み口２２側に向かって送風機１８側に傾斜している。即ち、吸込みパネル７の第１の吸込み口２１側の端部の高さと、導風壁２３の高さとを揃えることができる。なお、吸込みパネル７の第２の吸込み口２２側の端部の高さと、導風壁２３の高さとは異なる。従って、室内機２００ｆの高さ方向の寸法を変更することなく、導風壁２３を設置することができる。 (Modification)
FIG. 9 is a side perspective view showing an indoor unit 200f according to a modified example of Embodiment 3 of the present invention. As shown in FIG. 9, in the modification, the suction panel 7 is inclined toward the blower 18 from the first suction port 21 toward the second suction port 22. That is, the height of the end of the suction panel 7 on the first suction port 21 side and the height of the wind guide wall 23 can be made uniform. The height of the end of the suction panel 7 on the second suction port 22 side is different from the height of the wind guide wall 23. Therefore, the air guide wall 23 can be installed without changing the dimension of the indoor unit 200f in the height direction.
実施の形態４．
　図１０は、本発明の実施の形態４に係る冷凍サイクル装置１０００を示す回路図である。本実施の形態４では、実施の形態１～３の室内機２００を有する冷凍サイクル装置１０００について説明する。図１０に示すように、冷凍サイクル装置１０００は、例えば空調対象空間１７の空気を調整する空気調和機であり、室外機１００と、室内機２００とを備えている。室外機１００と室内機２００とは、ガス冷媒が流れるガス配管３００及び液冷媒又は気液二相冷媒が流れる液配管４００によって接続されている。室外機１００には、圧縮機１０１、流路切替装置１０２、室外熱交換器１０３、室外送風機１０４及び膨張部１０５が設けられている。室内機２００には、熱交換器３及び送風機１８が設けられている。 Embodiment 4 FIG.
FIG. 10 is a circuit diagram showing a refrigeration cycle apparatus 1000 according to Embodiment 4 of the present invention. In Embodiment 4, a refrigeration cycle apparatus 1000 including the indoor units 200 of Embodiments 1 to 3 will be described. As shown in FIG. 10, the refrigeration cycle apparatus 1000 is, for example, an air conditioner that adjusts air in a space 17 to be air-conditioned, and includes an outdoor unit 100 and an indoor unit 200. The outdoor unit 100 and the indoor unit 200 are connected by a gas pipe 300 through which a gas refrigerant flows and a liquid pipe 400 through which a liquid refrigerant or a gas-liquid two-phase refrigerant flows. The outdoor unit 100 includes a compressor 101, a flow path switching device 102, an outdoor heat exchanger 103, an outdoor blower 104, and an expansion unit 105. The indoor unit 200 is provided with the heat exchanger 3 and the blower 18.
　圧縮機１０１、流路切替装置１０２、室外熱交換器１０３、膨張部１０５及び熱交換器３が接続配管により接続されて冷媒回路が構成されている。圧縮機１０１は、低温且つ低圧の状態の冷媒を吸入し、吸入した冷媒を圧縮して高温且つ高圧の状態の冷媒にして吐出するものである。圧縮機１０１は、例えばインバータ装置等を備え、運転周波数を任意に変化させることによって、圧縮機１０１の容量を細かく変化させる。ここで、圧縮機１０１の容量とは、単位時間当たりの冷媒を送り出す量である。流路切替装置１０２は、制御装置（図示せず）からの指示に基づいて、冷媒回路において冷媒が流れる方向を切り替えるものであり、例えば四方弁である。室外熱交換器１０３は、例えば室外空気と冷媒との間で熱交換するものである。室外熱交換器１０３は、冷房運転時には凝縮器として作用し、暖房運転時には蒸発器として作用する。 冷媒 The refrigerant circuit is configured by connecting the compressor 101, the flow path switching device 102, the outdoor heat exchanger 103, the expansion unit 105, and the heat exchanger 3 by connecting pipes. The compressor 101 sucks a low-temperature and low-pressure refrigerant, compresses the sucked refrigerant into a high-temperature and high-pressure refrigerant, and discharges the refrigerant. The compressor 101 includes, for example, an inverter device, and changes the operation frequency arbitrarily to finely change the capacity of the compressor 101. Here, the capacity of the compressor 101 is the amount of refrigerant to be sent out per unit time. The flow path switching device 102 switches the direction in which the refrigerant flows in the refrigerant circuit based on an instruction from a control device (not shown), and is, for example, a four-way valve. The outdoor heat exchanger 103 exchanges heat between outdoor air and a refrigerant, for example. The outdoor heat exchanger 103 functions as a condenser during the cooling operation, and functions as an evaporator during the heating operation.
　室外送風機１０４は、室外熱交換器１０３に室外空気を送る機器である。室外送風機１０４は、例えば送風機１８と同様の遠心ファン１等としてもよい。室外送風機１０４は、インバータ装置等によりモータの運転周波数を任意に変化させて遠心ファン１の回転速度を細かく変化させるようにしてもよい。膨張部１０５は、冷媒を減圧して膨張する減圧弁又は膨張弁である。膨張部１０５は、例えば開度が調整される電子式膨張弁である。熱交換器３は、例えば室内空気と冷媒との間で熱交換するものである。熱交換器３は、冷房運転時には蒸発器として作用し、暖房運転時には凝縮器として作用する。送風機１８は、熱交換器３に室内空気を送る機器である。送風機１８の運転速度は、例えばユーザによって設定される。 外 The outdoor blower 104 is a device that sends outdoor air to the outdoor heat exchanger 103. The outdoor blower 104 may be, for example, the same centrifugal fan 1 as the blower 18. The outdoor blower 104 may finely change the rotation speed of the centrifugal fan 1 by arbitrarily changing the operating frequency of the motor using an inverter device or the like. The expansion section 105 is a pressure reducing valve or an expansion valve that decompresses and expands the refrigerant. The expansion section 105 is, for example, an electronic expansion valve whose opening is adjusted. The heat exchanger 3 exchanges heat, for example, between room air and a refrigerant. The heat exchanger 3 functions as an evaporator during the cooling operation, and functions as a condenser during the heating operation. The blower 18 is a device that sends indoor air to the heat exchanger 3. The operation speed of the blower 18 is set by, for example, a user.
　（運転モード、冷房運転）
　次に、冷凍サイクル装置１０００の運転モードについて説明する。先ず、冷房運転について説明する。冷房運転において、圧縮機１０１に吸入された冷媒は、圧縮機１０１によって圧縮されて高温且つ高圧のガス状態で吐出する。圧縮機１０１から吐出された高温且つ高圧のガス状態の冷媒は、流路切替装置１０２を通過して、凝縮器として作用する室外熱交換器１０３に流入し、室外熱交換器１０３において、室外送風機１０４によって送られる室外空気と熱交換されて凝縮液化する。凝縮された液状態の冷媒は、膨張部１０５に流入し、膨張部１０５において膨張及び減圧されて低温且つ低圧の気液二相状態の冷媒となる。そして、気液二相状態の冷媒は、蒸発器として作用する熱交換器３に流入し、熱交換器３において、送風機１８によって送られる室内空気と熱交換されて蒸発ガス化する。このとき、室内空気が冷やされ、室内において冷房が実施される。蒸発した低温且つ低圧のガス状態の冷媒は、流路切替装置１０２を通過して、圧縮機１０１に吸入される。 (Operation mode, cooling operation)
Next, an operation mode of the refrigeration cycle apparatus 1000 will be described. First, the cooling operation will be described. In the cooling operation, the refrigerant drawn into the compressor 101 is compressed by the compressor 101 and discharged in a high-temperature and high-pressure gas state. The high-temperature and high-pressure gaseous refrigerant discharged from the compressor 101 passes through the flow path switching device 102, flows into the outdoor heat exchanger 103 acting as a condenser, and in the outdoor heat exchanger 103, the outdoor blower The heat is exchanged with the outdoor air sent by 104 to condense and liquefy. The condensed refrigerant in the liquid state flows into the expansion section 105, and is expanded and decompressed in the expansion section 105 to become a low-temperature and low-pressure refrigerant in a gas-liquid two-phase state. Then, the refrigerant in the gas-liquid two-phase state flows into the heat exchanger 3 acting as an evaporator, and in the heat exchanger 3, heat exchanges with the indoor air sent by the blower 18 to evaporate. At this time, the room air is cooled and the room is cooled. The evaporated low-temperature and low-pressure gaseous refrigerant passes through the flow switching device 102 and is sucked into the compressor 101.
　（運転モード、暖房運転）
　次に、暖房運転について説明する。暖房運転において、圧縮機１０１に吸入された冷媒は、圧縮機１０１によって圧縮されて高温且つ高圧のガス状態で吐出する。圧縮機１０１から吐出された高温且つ高圧のガス状態の冷媒は、流路切替装置１０２を通過して、凝縮器として作用する熱交換器３に流入し、熱交換器３において、送風機１８によって送られる室内空気と熱交換されて凝縮液化する。このとき、室内空気が暖められ、室内において暖房が実施される。凝縮された液状態の冷媒は、膨張部１０５に流入し、膨張部１０５において膨張及び減圧されて低温且つ低圧の気液二相状態の冷媒となる。そして、気液二相状態の冷媒は、蒸発器として作用する室外熱交換器１０３に流入し、室外熱交換器１０３において、室外送風機１０４によって送られる室外空気と熱交換されて蒸発ガス化する。蒸発した低温且つ低圧のガス状態の冷媒は、流路切替装置１０２を通過して、圧縮機１０１に吸入される。 (Operation mode, heating operation)
Next, the heating operation will be described. In the heating operation, the refrigerant drawn into the compressor 101 is compressed by the compressor 101 and discharged in a high-temperature and high-pressure gas state. The high-temperature and high-pressure gaseous refrigerant discharged from the compressor 101 passes through the flow path switching device 102, flows into the heat exchanger 3 acting as a condenser, and is blown by the blower 18 in the heat exchanger 3. The heat exchanges with the indoor air to condense and liquefy. At this time, the room air is warmed and the room is heated. The condensed refrigerant in the liquid state flows into the expansion section 105, and is expanded and decompressed in the expansion section 105 to become a low-temperature, low-pressure gas-liquid two-phase refrigerant. The refrigerant in the gas-liquid two-phase state flows into the outdoor heat exchanger 103 acting as an evaporator, where the refrigerant exchanges heat with outdoor air sent by the outdoor blower 104 to evaporate. The evaporated low-temperature and low-pressure gaseous refrigerant passes through the flow switching device 102 and is sucked into the compressor 101.
　このように、実施の形態１～３の送風機１８を室外送風機１０４として室外機１００を構成することによって、効率が良い室外機１００を実現することができる。 As described above, by configuring the outdoor unit 100 as the outdoor fan 104 using the blower 18 of the first to third embodiments, the outdoor unit 100 with high efficiency can be realized.
　なお、室内機２００は、冷凍サイクル装置１０００の室内機２００、例えば空気調和機の室内機２００としてもよい。また、熱交換器３を備えていない送風装置としての室内機２００としてもよい。このように、室内機２００は、送風機１８が設置される各種装置又は設備等に適用することができる。また、上記実施の形態では、送風機１８がターボファンである場合について例示しているが、シロッコファン、プロペラファン、貫流ファンなどの他の送風機でもよい。 The indoor unit 200 may be the indoor unit 200 of the refrigeration cycle apparatus 1000, for example, the indoor unit 200 of an air conditioner. Further, the indoor unit 200 may be an air blower that does not include the heat exchanger 3. As described above, the indoor unit 200 can be applied to various devices or facilities in which the blower 18 is installed. Further, in the above-described embodiment, the case where the blower 18 is a turbo fan is illustrated, but other blowers such as a sirocco fan, a propeller fan, and a once-through fan may be used.
　１　遠心ファン、２　ファンモータ、２ａ　シャフト、３　熱交換器、４　本体側板、５　本体天板、６　化粧パネル、７　吸込みパネル、８　フィルタ、９　吹出し口、１０　主板、１１　側板、１２　羽根、１３　風向板、１４　ベルマウス、１４ａ　ベルマウス開口、１５　被取付部、１６　ドレンパン、１７　空調対象空間、１８　送風機、２０　本体、２０ａ　開口部、２１　第１の吸込み口、２２　第２の吸込み口、２３　導風壁、２３ａ　導風壁、２５　パネル、３０　吸音部材、１００　室外機、１０１　圧縮機、１０２　流路切替装置、１０３　室外熱交換器、１０４　室外送風機、１０５　膨張部、２００，２００ａ，２００ｂ，２００ｃ，２００ｄ，２００ｅ，２００ｆ　室内機、２０１　室内機、３００　ガス配管、４００　液配管、１０００　冷凍サイクル装置。 1 centrifugal fan, 2 fan motor, 2a shaft, 3 heat exchanger, 4 body side plate, 5 body top plate, 6 decorative panel, 7 suction panel, 8 filter, 9 outlet, 10 main plate, 11 side plate, 12 blade, 13 Wind direction board, 14 bell mouth, 14 bell mouth opening, 15 attached part, 16 drain pan, 17 air-conditioned space, 18 blower, 20 body, 20a opening, 21 first suction port, 22 second suction port, 23 Wind guide wall, 23a wind guide wall, 25 panel, 30 sound absorbing member, 100 outdoor unit, 101 compressor, 102 flow switching device, 103 outdoor heat exchanger, 104 outdoor blower, 105 expansion unit, 200, 200a, 200b, 200c, 200d, 200e, 200f indoor unit, 201 indoor unit, 300 gas distribution , 400 liquid pipe, 1000 refrigeration cycle apparatus.

Claims (11)

  1. 　空調対象空間側に開口部が形成され、被取付部に取り付けられる本体と、
    　空気を吸い込む第１の吸込み口と、前記第１の吸込み口よりも前記本体の中央側に形成され空気を吸い込む第２の吸込み口と、前記第１の吸込み口及び前記第２の吸込み口から吸い込まれた空気を吹き出す吹出し口とが形成され、前記本体の前記開口部を覆うパネルと、
    　前記第１の吸込み口及び前記第２の吸込み口から吸い込まれ前記吹出し口に吹き出される空気の流れを形成する送風機と、
    　前記パネルの前記第２の吸込み口の少なくとも一部を覆うように設けられた導風壁と、
    　を備える室内機。     An opening is formed on the side of the space to be air-conditioned, and a main body attached to the attached portion;
    A first suction port for sucking air, a second suction port formed closer to the center of the main body than the first suction port and for sucking air; and the first suction port and the second suction port. A blowout opening for blowing out the sucked air is formed, and a panel covering the opening of the main body;
    A blower for forming a flow of air sucked from the first suction port and the second suction port and blown out to the blowout port;
    A wind guide wall provided so as to cover at least a part of the second suction port of the panel;
    Indoor unit equipped with.
  2. 　前記導風壁は、
    　前記パネルとは高さが異なる位置に設けられている
    　請求項１記載の室内機。     The wind guide wall,
    The indoor unit according to claim 1, wherein the indoor unit is provided at a position different in height from the panel.
  3. 　前記導風壁は、
    　側面断面視において前記第２の吸込み口の幅以上の幅を有している
    　請求項１又は２記載の室内機。     The wind guide wall,
    The indoor unit according to claim 1, wherein the indoor unit has a width equal to or greater than a width of the second suction port in a side cross-sectional view.
  4. 　前記導風壁は、
    　前記パネルよりも前記送風機側に設けられている
    　請求項１～３のいずれか１項に記載の室内機。     The wind guide wall,
    The indoor unit according to any one of claims 1 to 3, wherein the indoor unit is provided closer to the blower than the panel.
  5. 　前記導風壁は、
    　前記パネルよりも前記空調対象空間側に設けられている
    　請求項１～３のいずれか１項に記載の室内機。     The wind guide wall,
    The indoor unit according to any one of claims 1 to 3, wherein the indoor unit is provided closer to the space to be air-conditioned than the panel.
  6. 　前記導風壁と前記パネルとは一体的に形成されている
    　請求項１～５のいずれか１項に記載の室内機。     The indoor unit according to any one of claims 1 to 5, wherein the wind guide wall and the panel are formed integrally.
  7. 　前記導風壁は、
    　前記空調対象空間側に突出した凸形状をなしている
    　請求項１～６のいずれか１項に記載の室内機。     The wind guide wall,
    The indoor unit according to any one of claims 1 to 6, wherein the indoor unit has a convex shape protruding toward the space to be air-conditioned.
  8. 　前記パネルの前記送風機側の面及び前記導風壁の前記送風機側の面に設けられ、音を吸収する吸音部材を更に備える
    　請求項１～７のいずれか１項に記載の室内機。     The indoor unit according to any one of claims 1 to 7, further comprising a sound absorbing member provided on a surface of the panel on the side of the blower and a surface of the air guide wall on a side of the blower, for absorbing sound.
  9. 　前記パネルは、前記第１の吸込み口側から前記第２の吸込み口側に向かって前記送風機側に傾斜している
    　請求項１～８のいずれか１項に記載の室内機。     The indoor unit according to any one of claims 1 to 8, wherein the panel is inclined toward the blower from the first suction port side toward the second suction port side.
  10. 　前記送風機と前記パネルとの間に設けられ、前記送風機に送られる空気の上流側から下流側に向かって縮径する筒状のベルマウスを更に備え、
    　前記第２の吸込み口は、
    　ベルマウスの下流側のベルマウス開口よりも径方向の外側に形成されている
    　請求項１～９のいずれか１項に記載の室内機。     Further provided is a cylindrical bell mouth provided between the blower and the panel, the diameter of which is reduced from the upstream side to the downstream side of the air sent to the blower,
    The second inlet is
    The indoor unit according to any one of claims 1 to 9, wherein the indoor unit is formed radially outside the bell mouth opening downstream of the bell mouth.
  11. 　請求項１～１０のいずれか１項に記載の室内機を備えた冷凍サイクル装置。 冷凍 A refrigeration cycle apparatus comprising the indoor unit according to any one of claims 1 to 10.
PCT/JP2018/028096 2018-07-26 2018-07-26 Indoor unit and refrigeration cycle apparatus WO2020021678A1 (en)

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EP18927912.8A EP3828475A4 (en) 2018-07-26 2018-07-26 Indoor unit and refrigeration cycle apparatus
PCT/JP2018/028096 WO2020021678A1 (en) 2018-07-26 2018-07-26 Indoor unit and refrigeration cycle apparatus

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JP2006284090A (en) * 2005-03-31 2006-10-19 Daikin Ind Ltd Air conditioner
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