WO2022107209A1 - Unité intérieure et dispositif à cycle frigorifique - Google Patents

Unité intérieure et dispositif à cycle frigorifique Download PDF

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Publication number
WO2022107209A1
WO2022107209A1 PCT/JP2020/042812 JP2020042812W WO2022107209A1 WO 2022107209 A1 WO2022107209 A1 WO 2022107209A1 JP 2020042812 W JP2020042812 W JP 2020042812W WO 2022107209 A1 WO2022107209 A1 WO 2022107209A1
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WO
WIPO (PCT)
Prior art keywords
blower
air
indoor unit
space
main body
Prior art date
Application number
PCT/JP2020/042812
Other languages
English (en)
Japanese (ja)
Inventor
惇司 河野
拓矢 寺本
誠 栗原
一樹 磯村
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 PCT/JP2020/042812 priority Critical patent/WO2022107209A1/fr
Priority to CN202080107104.6A priority patent/CN116391097A/zh
Priority to JP2022563276A priority patent/JPWO2022107209A1/ja
Priority to EP20962373.5A priority patent/EP4249821A4/fr
Priority to US18/027,235 priority patent/US20230358417A1/en
Publication of WO2022107209A1 publication Critical patent/WO2022107209A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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

Definitions

  • the present disclosure relates to an indoor unit and a refrigerating cycle device equipped with a blower, a bell mouth and an electric component box.
  • Patent Document 1 discloses a four-way cassette type indoor unit including a blower, a bell mouth, and an electrical box.
  • the electric box is installed so as to close a part of the opening of the bell mouth, and a rib for supporting the electric box for supporting the electric box is provided between the bell mouth and the electric box.
  • This disclosure is made to solve the above-mentioned problems, and provides an indoor unit and a refrigerating cycle device that suppress the generation of noise while suppressing the increase in manufacturing cost.
  • an opening is formed on the air-conditioned space side, and a main body attached to the attached portion, a suction port for sucking air, and an outlet for blowing out air sucked from the suction port are formed.
  • a panel that covers the opening of the main body, a blower that is provided in the main body and forms a flow of air that is sucked in from the suction port of the panel and blown out from the blowout port, and a blower that is provided in the main body on the upstream side of the blower and is provided from the suction port.
  • a space is formed between the electrical box and the bell mouth. Therefore, the air flowing in from the upstream of the electric goods box passes through the electric goods box and then flows into the space.
  • a dead water area does not occur downstream of the electrical component box, it is possible to prevent the surrounding air such as the air flowing in from the upstream of the electrical component box and the air flowing in from the bell mouth near the electrical component box from colliding with each other. To. Therefore, the air flow does not become turbulent, and the generation of noise can be suppressed.
  • it is not necessary to process an electric product box or the like it is possible to suppress the manufacturing cost while suppressing it.
  • FIG. 1 is a perspective view showing the indoor unit 200 according to the first embodiment
  • FIG. 2 is a side perspective view showing the indoor unit 200 according to the first embodiment.
  • the indoor unit 200 is, for example, a 4-way cassette type indoor unit 200.
  • 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 blower 18, a bell mouth 14, and an electric component box 30.
  • the main body 20 is attached to a mounted portion 15 such as a ceiling surface, and is a bottomed square cylinder-shaped housing.
  • the main body 20 has a rectangular main body top plate 5 arranged on the back side of the mounted portion 15, and four main body side plates 4 extending from the 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 the opening 20a.
  • the first embodiment illustrates the indoor unit 200 of the ceiling-embedded refrigerating cycle device 1000 (see FIG. 9) in which the main body 20 is embedded in the back side of the attached portion 15.
  • the panel 25 covers the opening 20a of the main body 20 and has a decorative panel 6 and a suction panel 7.
  • the panel 25 may be, for example, sheet metal or resin.
  • the decorative panel 6 is, for example, a rectangular frame-shaped member that is detachably attached to the main body 20 and covers the edge portion of the opening 20a of the main body 20. Holes extending in the longitudinal direction are formed at both ends of the decorative panel 6 on the long side.
  • the decorative panel 6 is located on substantially the same surface as the attached portion 15.
  • the suction panel 7 is, for example, a rectangular frame-shaped member that is arranged inside the frame-shaped decorative panel 6 and is detachably attached to the decorative panel 6, and covers the center of the opening 20a of the main body 20.
  • the surface of the suction panel 7 on the air-conditioned space 17 side is a substantially horizontal plane.
  • the suction panel 7 is formed with a suction port 21 into which the air in the air-conditioned space 17 is sucked.
  • the suction port 21 is formed on the center side of the main body 20. Further, in the opening 20a of the main body 20, the hole along the edge on the long side of the decorative panel 6 is an outlet 9, and the air sucked from the suction port 21 is blown out to the outlet 9. It is an opening.
  • the number of outlets 9 is four as holes along the edges of the four sides of the decorative panel 6 is illustrated, but the number of outlets 9 may be one to three. It may be 5 or more.
  • Wind direction plate 13 The wind direction plate 13 is provided at each outlet 9, and the angle is changed to adjust the direction of the air blown from the outlet 9.
  • the heat exchanger 3 is provided in the air passage connecting the suction port 21 and the outlet 9 on the radial outer side of the blower 18, and causes the air sucked from the suction port 21 to exchange heat with the refrigerant. ..
  • the heat exchanger 3 is, for example, a fin-and-tube type heat exchanger 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 pipe is connected to the outdoor unit 100 (see FIG. 9) by the gas pipe 300 and the liquid pipe 400.
  • the heat exchanger 3 is supplied with the cooled refrigerant or the heated refrigerant from the outdoor unit 100.
  • the drain pan 16 is provided below the heat exchanger 3 and receives the dew condensation 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 dust from the air sucked from the suction port 21.
  • the outer shape of the filter 8 is substantially the same as the outer shape of the suction panel 7.
  • the blower 18 is provided in the center of the inside of the main body 20, and forms a flow of air sucked in from the suction port 21 and blown out from the blowout port 9.
  • the blower 18 has a fan motor 2, a shaft 2a, and a centrifugal fan 1.
  • the fan motor 2 is supported on the lower surface of the main body top plate 5 and drives the centrifugal fan 1 to rotate.
  • the shaft 2a is a rotating shaft extending downward from the fan motor 2.
  • the centrifugal fan 1 is, for example, a turbofan, and has a main plate 10 having a boss which is a fixing portion with the shaft 2a, a plurality of blades 12, and a side plate 11 forming an air passage.
  • the blade 12 is rotated by the rotational drive of the fan motor 2.
  • the centrifugal fan 1 is formed with a fan suction port 18a for sucking air and a fan outlet 18b for blowing air.
  • the centrifugal fan 1 sucks air into the main body 20 from the suction port 21 and blows the sucked air into the room which is the air-conditioned space 17 from the blowout port 9.
  • the bell mouth 14 is a curved cylindrical member provided between the centrifugal fan 1 of the blower 18 and the suction panel 7 and gradually reducing the diameter from the upstream side to the downstream side of the air sent to the blower 18.
  • the bell mouth 14 is a tubular member, and the bell mouth opening 14a is open.
  • the bell mouth 14 guides the air flowing into the blower 18.
  • the bell mouth 14 is located between the upstream space located between the suction port 21 of the indoor unit 200 and the fan suction port 18a of the blower 18, and between the fan outlet 18b of the blower 18 and the outlet 9 of the indoor unit 200. It is provided so as to partition the space on the downstream side where it is located.
  • the electrical component box 30 is a box-shaped member that houses a control unit (not shown) that controls the operation of the blower 18 and the like.
  • the electrical component box 30 is provided on the upstream side of the bell mouth 14 in the main body 20. As shown in FIG. 1, the electric component box 30 is arranged on one side of the four edges of the opening 20a of the main body 20 and closes a part of the opening 20a.
  • Space 40 A space 40 through which air flows is formed between the electrical component box 30 and the bell mouth 14. That is, there is a predetermined distance between the electrical component box 30 and the bell mouth 14. As described above, the electric component box 30 is provided on the upstream side of the bell mouth 14 so as to form a space 40 in which air flows between the main body 20 and the bell mouth 14.
  • a space 40 is formed between the electric component box 30 and the bell mouth 14. Therefore, the air flowing in from the upstream of the electric component box 30 passes through the electric component box 30 and then flows into the space 40. In this way, since a dead water area does not occur downstream of the electrical component box 30, surrounding air such as air flowing in from the upstream of the electrical component box 30 and air flowing in from the bell mouth 14 in the vicinity of the electrical component box 30 collide with each other. Is suppressed. Therefore, the air flow does not become turbulent, and the generation of noise can be suppressed.
  • the indoor unit 200 according to the first embodiment can suppress the generation of noise without increasing the manufacturing cost.
  • the air suction distribution of the blower 18 is made uniform in the circumferential direction. By making the suction distribution uniform in this way, it is possible to suppress the flow of air flowing into the blower 18 from becoming turbulent, so that the power consumption of the blower 18 is reduced and the generation of noise is reduced. ..
  • FIG. 3 is a side perspective view showing the indoor unit 200e according to the comparative example.
  • the operation of the indoor unit 200e according to the comparative example will be described.
  • the space 40 is not formed between the electric component box 30 and the bell mouth 14. Therefore, a dead water area 60 is generated on the downstream side of the electric component box 30 in the air flow.
  • the surrounding air such as the air flowing in from the upstream of the electric component box 30 and the air flowing in from the bell mouth 14 in the vicinity of the electric component box 30 collide with each other toward the dead water area 60 which is a low pressure portion, and the air is released. It becomes a turbulent turbulence. When turbulence flows into the blower 18, noise is generated.
  • a part of the electric component box 30 and a part of the control unit provided in the electric component box 30 are dented along the bell mouth opening 14a to form a dead water area. If you try to eliminate 60, the manufacturing cost will increase accordingly.
  • the air flowing in from the upstream of the electric component box 30 passes through the electric component box 30. After that, it flows into the space 40. Therefore, it is possible to suppress the generation of noise while suppressing the increase in manufacturing cost.
  • FIG. 4 is a side perspective view showing the indoor unit 200a according to the second embodiment
  • FIG. 5 is a bottom view showing the indoor unit 200a according to the second embodiment.
  • the second embodiment is different from the first embodiment in that the indoor unit 200a is provided with the rectifying guide 41.
  • the same parts as those in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
  • the rectifying guide 41 is provided in the space 40 and guides the air flowing into the space 40 to the bell mouth 14 side.
  • the rectifying guide 41 diverts the direction of the air flowing into the space 40 toward the fan suction port 18a of the blower 18 in the space 40 between the electric component box 30 and the bell mouth 14.
  • the upper end of the rectifying guide 41 is connected to the bell mouth 14, and the lower end is connected to the electric component box 30, and the rectifying guide 41 is installed so as to partition the space 40 between the bell mouth 14 and the electrical component box 30. ..
  • the rectifying guide 41 is provided near the center of the electric component box 30.
  • the inner peripheral end of the rectifying guide 41 is located on the outer peripheral side of the bell mouth opening 14a.
  • the rectifying guide 41 may be configured as a component integrated with the bell mouth 14.
  • the number of rectifying guides 41 is single in the circumferential direction about the rotation axis of the blower 18 in the space 40. That is, the rectifying guide 41 is arranged at one place in the circumferential direction about the rotation axis of the blower 18. As a result, the rectifying guides 41 are installed at two or more places, and there is no problem that air does not flow between the rectifying guides 41 and it is difficult to improve the generation of noise.
  • the indoor unit 200a is provided in the space 40 and further includes a rectifying guide 41 for guiding the air flowing into the space 40 to the bell mouth 14 side.
  • a rectifying guide 41 for guiding the air flowing into the space 40 to the bell mouth 14 side.
  • the number of rectifying guides 41 is single in the circumferential direction about the rotation axis of the blower 18 in the space 40.
  • the rectifying guides 41 are installed at two or more places, and there is no problem that air does not flow between the rectifying guides 41 and it is difficult to improve the generation of noise. Therefore, since the number of the rectifying guides 41 is single, air easily flows into the entire space 40 between the electric component box 30 and the bell mouth 14.
  • FIG. 6 is a bottom view showing the indoor unit 200b according to the third embodiment.
  • the position where the rectifying guide 41 is installed is different from that of the first embodiment.
  • the same parts as those of the first and second embodiments are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first and second embodiments will be mainly described.
  • the rectifying guide 41 is provided at the end portion in the circumferential direction about the rotation axis of the blower 18 in the space 40.
  • the third embodiment illustrates the case where the rectifying guide 41 is provided at the end opposite to the rotation direction R of the blower 18, but the rectifying guide 41 is the rotation direction R of the blower 18. It may be provided at the end.
  • the rectifying guide 41 is provided at the end portion in the circumferential direction about the rotation axis of the blower 18 in the space 40. Therefore, the space 40 divided into two by the rectifying guide 41 becomes a large space 40 on one side and a small space 40 on the other side. As a result, the air flowing into the space 40 between the electric component box 30 and the bell mouth 14 mainly flows from one side of the electric component box 30. Therefore, the turbulence caused by the collision of air is further suppressed, and the noise is reduced.
  • FIG. 7 is a bottom view showing the indoor unit 200c according to the fourth embodiment.
  • the fourth embodiment is different from the second and third embodiments in that the rectifying guide 41 has a pair of side surfaces 42.
  • the same parts as those of the first to third embodiments are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first to third embodiments will be mainly described.
  • the rectifying guide 41 has a pair of side surfaces 42 facing each other in the circumferential direction about the rotation axis of the blower 18, and the distance between the pair of side surfaces 42 is toward the rotation axis of the blower 18. to shrink.
  • the pair of side surfaces 42 of the rectifying guide 41 project in opposite directions. That is, the side surface 42 is concave with respect to the outside of the rectifying guide 41.
  • the portion surrounded by the side surface 42 of the rectifying guide 41 may have a hollow structure.
  • the rectifying guide 41 has a pair of side surfaces 42 facing each other in the circumferential direction about the rotation axis of the blower 18, and the distance between the pair of side surfaces 42 is the rotation axis of the blower 18. Shrink towards. As a result, the air that flows in from the side of the rectifying guide 41 and collides with the rectifying guide 41 flows smoothly toward the bell mouth 14. Further, the pair of side surfaces 42 of the rectifying guide 41 project in the opposite directions. As a result, the air flows along the concave surface, so that the air flow becomes smoother than when the side surface 42 is flat. Further, when the portion surrounded by the side surface 42 of the rectifying guide 41 has a hollow structure, the material cost of the rectifying guide 41 can be reduced and the weight can be reduced.
  • FIG. 8 is a side perspective view showing the indoor unit 200d according to the fifth embodiment.
  • the shape of the electric component box 30 is different from that of the second to fourth embodiments.
  • the same parts as those of the first to fourth embodiments are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first to fourth embodiments will be mainly described.
  • the upstream side end portion 31 and the downstream side end portion 32 of the side surface 42 on the blower 18 side in the electric component box 30 have a curved surface. Further, the radius of curvature of the upstream end portion 31 is larger than the radius of curvature of the downstream end portion 32.
  • the range J of the curved surface shape of the upstream end portion 31 is preferably 1/3 or more of the height H of the electric component box 30.
  • the upstream side end portion 31 and the downstream side end portion 32 of the side surface 42 on the blower 18 side in the electric component box 30 have a curved surface, and the radius of curvature of the upstream side end portion 31 is set. It is larger than the radius of curvature of the downstream end portion 32. This makes it easier for air to flow into the space 40 between the electrical component box 30 and the bell mouth 14 along the electrical component box 30. Therefore, the suction distribution of the blower 18 is made uniform, and the noise is reduced. In general, the air flow is faster on the upstream side than on the downstream side.
  • the radius of curvature of the upstream end portion 31 in the electrical component box 30 is made larger than the radius of curvature of the downstream end portion 32 to further smooth the flow of air on the upstream side. .. Further, since the range of the curved surface shape of the upstream end portion 31 is 1/3 or more of the height of the electric product box 30, the air easily follows the shape of the electric product box 30, and the air flow is further increased. Be facilitated.
  • FIG. 9 is a circuit diagram showing the refrigeration cycle apparatus 1000 according to the sixth embodiment.
  • the refrigerating cycle device 1000 is, for example, an air conditioner that adjusts the air in the air-conditioned space 17, 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 is provided with 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 a heat exchanger 3 and a blower 18.
  • the compressor 101, the flow path switching device 102, the outdoor heat exchanger 103, the expansion unit 105, and the heat exchanger 3 are connected by a connecting pipe to form a refrigerant circuit.
  • the compressor 101 sucks in a refrigerant in a low temperature and low pressure state, compresses the sucked refrigerant into a refrigerant in a high temperature and high pressure state, and discharges the sucked refrigerant.
  • the compressor 101 is provided with, for example, an inverter device or the like, and the capacity of the compressor 101 is finely changed by arbitrarily changing the operating frequency.
  • the capacity of the compressor 101 is the amount of the refrigerant delivered 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 the control unit (not shown), and is, for example, a four-way valve.
  • the outdoor heat exchanger 103 exchanges heat between, for example, outdoor air and a refrigerant.
  • the outdoor heat exchanger 103 acts as a condenser during the cooling operation and 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, a centrifugal fan 1 or the like similar to the blower 18.
  • the outdoor blower 104 may arbitrarily change the operating frequency of the motor by an inverter device or the like to finely change the rotation speed of the centrifugal fan 1.
  • the expansion unit 105 is a pressure reducing valve or an expansion valve that decompresses and expands the refrigerant.
  • the expansion unit 105 is, for example, an electronic expansion valve whose opening degree is adjusted.
  • the heat exchanger 3 exchanges heat between, for example, indoor air and a refrigerant.
  • the heat exchanger 3 acts as an evaporator during the cooling operation and as a condenser during the heating operation.
  • the blower 18 is a device that sends indoor air to the heat exchanger 3.
  • the operating speed of the blower 18 is set by the user, for example.
  • cooling operation Next, the operation mode of the refrigeration cycle device 1000 will be described.
  • the cooling operation In the cooling operation, the refrigerant sucked 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 gas-state refrigerant discharged from the compressor 101 passes through the flow path switching device 102 and flows into the outdoor heat exchanger 103 that acts as a condenser, and in the outdoor heat exchanger 103, the outdoor blower. It exchanges heat with the outdoor air sent by 104 to form a condensed liquefaction.
  • the condensed liquid-state refrigerant flows into the expansion unit 105 and is expanded and depressurized in the expansion unit 105 to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant. Then, the refrigerant in the gas-liquid two-phase state flows into the heat exchanger 3 that acts as an evaporator, and in the heat exchanger 3, heat is exchanged with the indoor air sent by the blower 18 to be converted into evaporative gas. At this time, the indoor air is cooled, and cooling is performed indoors. The evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching device 102 and is sucked into the compressor 101.
  • the heating operation In the heating operation, the refrigerant sucked 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 gas-state 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 sent by the blower 18 in the heat exchanger 3. It exchanges heat with the indoor air to be condensed and liquefied. At this time, the indoor air is warmed and heating is performed in the room.
  • the condensed liquid-state refrigerant flows into the expansion unit 105 and is expanded and depressurized in the expansion unit 105 to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant. Then, the refrigerant in the gas-liquid two-phase state flows into the outdoor heat exchanger 103 that acts as an evaporator, and in the outdoor heat exchanger 103, heat is exchanged with the outdoor air sent by the outdoor blower 104 to become evaporative gas. The evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching device 102 and is sucked into the compressor 101.
  • the indoor unit 200 may be an indoor unit 200 as a blower device that is not provided with the heat exchanger 3. As described above, the indoor unit 200 can be applied to various devices or equipment in which the blower 18 is installed. Further, in the above 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-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

La présente invention concerne une unité intérieure qui comprend : un corps principal dans lequel une ouverture est formée sur le côté du corps principal faisant face à un espace à climatiser et qui est fixé à une partie de fixation ; un panneau qui recouvre l'ouverture dans le corps principal et qui a formé à l'intérieur de celui-ci un orifice d'aspiration destiné à aspirer de l'air et un orifice de soufflage destiné à souffler l'air aspiré depuis l'orifice d'aspiration ; une soufflante qui est disposée sur le corps principal et qui forme un écoulement de l'air aspiré depuis l'orifice d'aspiration du panneau et soufflé à partir de l'orifice de soufflage ; une embouchure qui est disposée en amont de la soufflante dans le corps principal et qui guide l'air aspiré depuis l'orifice d'aspiration vers le côté soufflante ; et une boîte de composant électrique qui est disposée en amont de l'embouchure dans le corps principal de façon à former un espace pour l'écoulement de l'air entre le corps principal et l'embouchure et qui stocke une unité de commande pour commander le fonctionnement de la soufflante.
PCT/JP2020/042812 2020-11-17 2020-11-17 Unité intérieure et dispositif à cycle frigorifique WO2022107209A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/JP2020/042812 WO2022107209A1 (fr) 2020-11-17 2020-11-17 Unité intérieure et dispositif à cycle frigorifique
CN202080107104.6A CN116391097A (zh) 2020-11-17 2020-11-17 室内机和制冷循环装置
JP2022563276A JPWO2022107209A1 (fr) 2020-11-17 2020-11-17
EP20962373.5A EP4249821A4 (fr) 2020-11-17 2020-11-17 Unité intérieure et dispositif à cycle frigorifique
US18/027,235 US20230358417A1 (en) 2020-11-17 2020-11-17 Indoor unit and refrigeration cycle device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/042812 WO2022107209A1 (fr) 2020-11-17 2020-11-17 Unité intérieure et dispositif à cycle frigorifique

Publications (1)

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WO2022107209A1 true WO2022107209A1 (fr) 2022-05-27

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PCT/JP2020/042812 WO2022107209A1 (fr) 2020-11-17 2020-11-17 Unité intérieure et dispositif à cycle frigorifique

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US (1) US20230358417A1 (fr)
EP (1) EP4249821A4 (fr)
JP (1) JPWO2022107209A1 (fr)
CN (1) CN116391097A (fr)
WO (1) WO2022107209A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014126245A (ja) * 2012-12-26 2014-07-07 Mitsubishi Heavy Ind Ltd 空調ユニット
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US20230358417A1 (en) 2023-11-09

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