WO2021255916A1 - 空気調和機の室内機 - Google Patents

空気調和機の室内機 Download PDF

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Publication number
WO2021255916A1
WO2021255916A1 PCT/JP2020/024126 JP2020024126W WO2021255916A1 WO 2021255916 A1 WO2021255916 A1 WO 2021255916A1 JP 2020024126 W JP2020024126 W JP 2020024126W WO 2021255916 A1 WO2021255916 A1 WO 2021255916A1
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WO
WIPO (PCT)
Prior art keywords
casing
air
outlet
indoor unit
indoor
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2020/024126
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
裕樹 宇賀神
宏典 永井
哲央 山下
靖英 早丸
教将 上村
尚史 池田
洋平 小柳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2022531216A priority Critical patent/JP7403651B2/ja
Priority to CN202080098815.1A priority patent/CN115667813A/zh
Priority to PCT/JP2020/024126 priority patent/WO2021255916A1/ja
Publication of WO2021255916A1 publication Critical patent/WO2021255916A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • F24F1/0029—Axial fans
    • 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

Definitions

  • This disclosure relates to an indoor unit of an air conditioner equipped with an axial fan.
  • Patent Document 1 discloses an indoor unit in which an outlet is formed at a position facing an axial fan on the front surface of the casing.
  • the indoor unit of the air conditioner disclosed in Patent Document 1 has a configuration in which air is blown out in a concentrated manner in one direction. Therefore, the heat-exchanged air collects in one place in the room. Therefore, the indoor unit of Patent Document 1 cannot diffuse the heat-exchanged air throughout the room.
  • This disclosure is made to solve the above-mentioned problems, and provides an indoor unit of an air conditioner that diffuses heat-exchanged air throughout the room.
  • the indoor unit of the air conditioner according to the present disclosure includes a casing constituting the outer shell, an indoor heat exchanger provided inside the casing and exchanging heat between the refrigerant flowing inside and air, and the inside of the casing.
  • the casing is provided with an axial flow fan that sends air forward, and the casing is formed behind the indoor heat exchanger, with an air suction port, and at the lower part in front of the axial flow fan of the casing.
  • the first air outlet formed to blow out air
  • the second air outlet formed to blow out air on one side in front of the axial flow fan of the casing, and the other side in front of the axial flow fan of the casing. It has a third air outlet formed in the portion to blow out air, and a fourth air outlet formed in the upper part in front of the axial flow fan of the casing to blow out air.
  • the casing is formed with a first outlet, a second outlet, a third outlet, and a fourth outlet, respectively, on the top, bottom, left, and right. Therefore, the indoor unit disperses the heat-exchanged air in all directions and blows it out. Therefore, the indoor unit can diffuse the heat-exchanged air throughout the room.
  • FIG. 1 It is a circuit diagram which shows the air conditioner 1 which concerns on Embodiment 1.
  • FIG. It is a front view which shows the indoor unit 3 which concerns on Embodiment 1.
  • FIG. It is a perspective view which shows the indoor unit 3 which concerns on Embodiment 1.
  • FIG. It is a perspective view which shows the indoor unit 3 which concerns on Embodiment 1.
  • FIG. It is a block diagram which shows the indoor unit 3 which concerns on Embodiment 1.
  • FIG. It is a block diagram which shows the indoor unit 103 which concerns on Embodiment 2.
  • FIG. It is a block diagram which shows the indoor unit 103A which concerns on the modification 1 of Embodiment 2.
  • FIG. It is a front view which shows the indoor unit 203 which concerns on Embodiment 3.
  • FIG. It is a block diagram which shows the indoor unit 203 which concerns on Embodiment 3.
  • FIG. It is a block diagram which shows the indoor unit 203A which concerns on the modification 1 of Embodiment 3.
  • FIG. It is a block diagram which shows the indoor unit 303 which concerns on Embodiment 4.
  • FIG. It is a block diagram which shows the indoor unit 303 which concerns on Embodiment 4.
  • FIG. It is a block diagram which shows the indoor unit 303A which concerns on the modification 1 of Embodiment 4.
  • FIG. 1 is a circuit diagram showing an air conditioner 1 according to the first embodiment.
  • the air conditioner 1 has an outdoor unit 2, an indoor unit 3, and a refrigerant pipe 4.
  • the number of indoor units 3 may be two or more.
  • the outdoor unit 2 is installed outside the air-conditioned space.
  • the outdoor unit 2 includes a compressor 5, a flow path switching valve 6, an outdoor heat exchanger 7, an outdoor blower 8, and an expansion valve 9.
  • the indoor unit 3 is installed in an air-conditioned space such as a room.
  • the indoor unit 3 has an indoor heat exchanger 10 and an axial fan 11.
  • the refrigerant pipe 4 is a pipe that connects the compressor 5, the flow path switching valve 6, the outdoor heat exchanger 7, the expansion valve 9, and the indoor heat exchanger 10 and allows the refrigerant to flow inside.
  • the refrigerant pipe 4 and each device connected to the refrigerant pipe 4 constitutes a refrigerant circuit.
  • the compressor 5 sucks in the 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 refrigerant.
  • the flow path switching valve 6 switches the flow direction of the refrigerant in the refrigerant circuit, and is, for example, a four-way valve.
  • the outdoor heat exchanger 7 exchanges heat between the refrigerant and the outdoor air, and is, for example, a fin-and-tube heat exchanger.
  • the outdoor heat exchanger 7 acts as a condenser during the cooling operation and as an evaporator during the heating operation.
  • the outdoor blower 8 is a device that sends outdoor air to the outdoor heat exchanger 7.
  • the expansion valve 9 decompresses and expands the refrigerant, and is, for example, an electronic expansion valve.
  • the indoor heat exchanger 10 exchanges heat between the indoor air and the refrigerant flowing inside the indoor heat exchanger 10.
  • the indoor heat exchanger 10 is provided inside the casing 12.
  • the indoor heat exchanger 10 is formed with an inlet 21 and an outlet 22.
  • a refrigerant pipe 4 for flowing a refrigerant into the indoor heat exchanger 10 is connected to the inflow port 21.
  • a refrigerant pipe 4 through which the refrigerant flows out from the indoor heat exchanger 10 is connected to the outlet 22.
  • the indoor heat exchanger 10 acts as an evaporator during the cooling operation and as a condenser during the heating operation.
  • the axial flow fan 11 sends air to the indoor heat exchanger 10.
  • the air conditioner 1 performs a cooling operation by switching the flow path switching valve 6 so that the discharge side of the compressor 5 and the outdoor heat exchanger 7 are connected.
  • the refrigerant sucked into the compressor 5 is compressed by the compressor 5 and discharged in a high temperature and high pressure gas state.
  • the high-temperature and high-pressure gas-state refrigerant discharged from the compressor 5 passes through the flow path switching valve 6 and flows into the outdoor heat exchanger 7 acting as a condenser.
  • the refrigerant flowing into the outdoor heat exchanger 7 exchanges heat with the outdoor air sent by the outdoor blower 8, condenses and liquefies.
  • the liquid-state refrigerant flows into the expansion valve 9 and is depressurized and expanded to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant.
  • the gas-liquid two-phase state refrigerant flows into the indoor heat exchanger 10 that acts as an evaporator.
  • the refrigerant flowing into the indoor heat exchanger 10 exchanges heat with the indoor air sent by the rotation of the axial flow fan 11, evaporates, and gasifies. At that time, the indoor air is cooled and the indoor cooling is performed. After that, the evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching valve 6 and is sucked into the compressor 5.
  • the air conditioner 1 performs a heating operation by switching the flow path switching valve 6 so that the discharge side of the compressor 5 and the indoor heat exchanger 10 are connected to each other.
  • the refrigerant sucked into the compressor 5 is compressed by the compressor 5 and discharged in a high temperature and high pressure gas state.
  • the high-temperature and high-pressure gas-state refrigerant discharged from the compressor 5 passes through the flow path switching valve 6 and flows into the indoor heat exchanger 10 acting as a condenser.
  • the refrigerant flowing into the indoor heat exchanger 10 exchanges heat with the indoor air sent by the rotation of the axial flow fan 11, condenses and liquefies.
  • the liquid-state refrigerant flows into the expansion valve 9 and is depressurized and expanded to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant.
  • the gas-liquid two-phase state refrigerant flows into the outdoor heat exchanger 7 that acts as an evaporator.
  • the refrigerant flowing into the outdoor heat exchanger 7 is heat-exchanged with the outdoor air sent by the outdoor blower 8 to evaporate and gasify. After that, the evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching valve 6 and is sucked into the compressor 5.
  • FIG. 2 is a front view showing the indoor unit 3 according to the first embodiment.
  • the axial flow fan 11 arranged inside the casing 12 is shown by a dotted line.
  • the arrow shown by the solid line represents the air flow.
  • FIG. 3 is a perspective view showing the indoor unit 3 according to the first embodiment.
  • the arrows shown by the solid lines represent the air flow.
  • FIG. 4 is a perspective view showing the indoor unit 3 according to the first embodiment.
  • the axial flow fan 11, the fan casing 13, and the lower and rear portions of the casing 12 are shown by dotted lines.
  • FIG. 5 is a schematic cross-sectional view showing the indoor unit 3 according to the first embodiment.
  • FIG. 5 shows a cross section taken along the line AA in FIG. That is, FIG. 5 shows a cross section obtained by cutting the center of the indoor unit 3 in the vertical direction. Further, in FIG. 5, the arrow shown by the solid line represents the air flow.
  • the indoor unit 3 is a floor-standing indoor unit. As shown in FIGS. 2 to 5, the indoor unit 3 has an axial fan 11, a casing 12, and a fan casing 13.
  • the axial flow fan 11 is provided inside the casing 12 in front of the indoor heat exchanger 10 and sends air forward. As the axial flow fan 11 rotates, the inside of the casing 12 becomes a negative pressure. At this time, the indoor air is sucked into the inside of the casing 12 through the suction port 40 formed in the casing 12, which will be described later, and is sent to the indoor heat exchanger 10.
  • the casing 12 has a substantially rectangular parallelepiped shape and constitutes the outer shell of the indoor unit 3.
  • the casing 12 may have a shape other than a rectangular parallelepiped.
  • the casing 12 has a bottom panel 31, a front panel 32, a first side panel 33, a second side panel 34, a rear panel 35, and a top panel 36. Further, the casing 12 is formed with a suction port 40, a first outlet 42, a second outlet 43, a third outlet 44, and a fourth outlet 45.
  • the lower surface panel 31 is a plate-shaped member constituting the lower surface of the casing 12.
  • the front panel 32 is a plate-shaped member that extends upward from the front end of the lower panel 31 and constitutes the front surface of the casing 12.
  • the first side surface panel 33 is a plate-shaped member that extends upward from one side end of the lower surface panel 31 and constitutes one side surface of the casing 12.
  • the second side surface panel 34 is a plate-shaped member that extends upward from the other side end of the lower surface panel 31 and constitutes the other side surface of the casing 12. The second side panel 34 faces the first side panel 33.
  • the rear panel 35 is a plate-shaped member that extends upward from the rear end of the lower panel 31 and constitutes the rear surface of the casing 12.
  • the upper surface panel 36 is a plate-shaped member constituting the upper surface of the casing 12.
  • the top panel 36 is connected to the upper part of each of the front panel 32, the first side panel 33, the second side panel 34, and the rear panel 35.
  • the suction port 40 is an opening formed in the rear panel 35, and sucks the air sucked into the inside of the casing 12.
  • the suction port 40 may be formed in a space other than the rear panel 35 as long as it is behind the casing 12 from the indoor heat exchanger 10.
  • the first outlet 42 is an opening formed over the lower part of the front panel 32 and the front part of the lower surface panel 31.
  • the first outlet 42 blows air below the casing 12.
  • the first outlet 42 may be formed only in the lower part of the front panel 32 or only in the front part of the lower surface panel 31 as long as it is in front of the axial flow fan 11 in the casing 12. Further, the first outlet 42 may be divided into a plurality of openings.
  • the second outlet 43 is an opening formed over one side of the front panel 32 and the front of the first side panel 33.
  • the second outlet 43 blows air to one side of the casing 12.
  • the second outlet 43 may be formed only on one side of the front panel 32 or only on the front of the first side panel 33 as long as it is in front of the axial flow fan 11 in the casing 12. Further, the second outlet 43 may be divided into a plurality of openings.
  • the third outlet 44 is an opening formed over the other side portion of the front panel 32 and the front portion of the second side surface panel 34.
  • the second side panel 34 blows air to the other side of the casing 12.
  • the third outlet 44 may be formed only on the other side portion of the front panel 32 or only on the front portion of the second side surface panel 34 as long as it is in front of the axial flow fan 11 in the casing 12. Further, the third outlet 44 may be divided into a plurality of openings.
  • the fourth outlet 45 is an opening formed over the upper part of the front panel 32 and the front part of the upper surface panel 36.
  • the fourth outlet 45 blows air above the casing 12.
  • the fourth outlet 45 may be formed only in the upper part of the front panel 32 or only in the front part of the upper surface panel 36 as long as it is in front of the axial flow fan 11 in the casing 12. Further, the fourth outlet 45 may be divided into a plurality of openings.
  • the fan casing 13 is a member for accommodating the axial flow fan 11.
  • the fan casing 13 is provided at the center of the casing 12 in the front-rear direction, and is connected to the lower surface panel 31 and the upper surface panel 36.
  • the casing 12 is formed with a first outlet 42, a second outlet 43, a third outlet 44, and a fourth outlet 45, respectively, in the vertical and horizontal directions. Therefore, the indoor unit 3 disperses the heat-exchanged air in all directions and blows it out. Therefore, the indoor unit 3 can diffuse the heat-exchanged air throughout the room to improve comfort.
  • the indoor unit 3 is provided with an axial fan 11. Therefore, the power consumption of the indoor unit 3 is reduced as compared with the case where another type of blower such as a cross flow fan is provided.
  • FIG. 6 is a configuration diagram showing the indoor unit 103 according to the second embodiment.
  • FIG. 6 is a schematic cross-sectional view of the indoor unit 103 cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 6, the arrow shown by the solid line represents the air flow.
  • the second embodiment is different from the first embodiment in that the front panel 132 has the rectifying unit 151.
  • the same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
  • the front panel 132 has a rectifying unit 151.
  • the rectifying unit 151 is a plate-shaped member and is located inside the casing 12.
  • the rectifying unit 151 is a plate-shaped member that extends along the edges of the first outlet 42, the second outlet 43, the third outlet 44, and the fourth outlet 45.
  • the rectifying unit 151 has a substantially rectangular shape when viewed from the front.
  • the lower part of the rectifying unit 151 is curved so as to bulge toward the lower surface panel 31. Therefore, the rectifying unit 151 guides the air sent forward from the axial flow fan 11 to the first outlet 42.
  • One side of the straightening vane 151 is curved so as to bulge toward the first side panel 33. Therefore, the rectifying unit 151 guides the air sent forward from the axial flow fan 11 to the second outlet 43.
  • the other side portion of the rectifying portion 151 is curved so as to bulge toward the second side surface panel 34. Therefore, the rectifying unit 151 guides the air sent forward from the axial flow fan 11 to the third outlet 44.
  • the upper portion of the straightening section 151 is curved so as to bulge toward the upper surface panel 36. Therefore, the rectifying unit 151 guides the air sent forward from the axial flow fan 11 to the fourth outlet 45.
  • the rectifying unit 151 may have a hemispherical shape or the like.
  • the front panel 132 has a rectifying unit 151.
  • the upper part, the lower part, one side portion and the other side portion of the rectifying unit 151 are curved. Therefore, when the air sent from the axial flow fan 11 toward the front panel 132 flows along the rectifying unit 151, the first outlet 42, the second outlet 43, the third outlet 44, and the fourth outlet It does not stay at the outlet 45 and the wind speed is not lost. Therefore, the indoor unit 103 can blow air far into the indoor space. This can further promote the diffusion of the heat exchanged air.
  • FIG. 7 is a configuration diagram showing the indoor unit 103A according to the first modification of the second embodiment.
  • FIG. 7 is a schematic cross-sectional view of the indoor unit 103A cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 7, the arrow shown by the solid line represents the air flow.
  • the rectifying section 152 has a quadrangular pyramid shape with a front portion widened and an apex protruding toward the axial flow fan at the rear portion.
  • the apex of the quadrangular pyramid is located on an extension of the rotation axis of the axial flow fan 11.
  • the apex of the rectifying unit 152 does not have to be located on the extension line of the rotation axis of the axial flow fan 11.
  • the rectifying unit 152 may have a conical shape.
  • the air sent from the axial flow fan 11 toward the front panel 132 flows along the rectifying unit 152. That is, the air sent from the axial flow fan 11 does not stay inside the casing 12, and the wind speed is not lost. Therefore, the indoor unit 103A can blow air far into the indoor space.
  • FIG. 8 is a configuration diagram showing the indoor unit 103B according to the second modification of the second embodiment.
  • FIG. 8 is a schematic cross-sectional view of the indoor unit 103B cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 8, the arrow shown by the solid line represents the air flow.
  • two axial flow fans 11 are provided side by side in the vertical direction.
  • three or more axial flow fans 11 may be provided.
  • the rectifying unit 153 has a shape in which two quadrangular pyramids are arranged in the vertical direction.
  • the apex of the cone arranged above is located on the extension line of the rotation axis of the axial flow fan 11 arranged above. Further, the apex of the cone arranged below is located below the extension line of the rotation axis of the axial flow fan 11 arranged below.
  • the control device composed of the CPU individually adjusts the rotation speed of each axial fan 11, so that the air volume blown out from the fourth outlet 45 and the air blown out from the first outlet 42.
  • the air volume can be changed individually.
  • the air sent from each axial flow fan 11 toward the front panel 132 flows along the rectifying unit 153. That is, the air sent from each axial flow fan 11 does not stay inside the casing 12, and the wind speed is not lost. Therefore, the indoor unit 103B can blow air far into the indoor space.
  • FIG. 9 is a front view showing the indoor unit 203 according to the third embodiment. Note that, for the sake of explanation, FIG. 9 shows the axial flow fan 11 and the portion of the partition portion 214 located inside the casing 12 with a dotted line.
  • FIG. 10 is a configuration diagram showing the indoor unit 203 according to the third embodiment.
  • FIG. 10 is a schematic cross-sectional view of the indoor unit 203 cut at a position corresponding to the cross section taken along the line AA of FIG.
  • the arrow shown by the solid line indicates the direction of the refrigerant flowing through the refrigerant pipe 4 during the cooling operation. Further, in FIG.
  • the third embodiment is different from the second embodiment in that the indoor unit 203 has a partition portion 214.
  • the same parts as those in the second embodiment are designated by the same reference numerals, and the description thereof will be omitted, and the differences from the second embodiment will be mainly described.
  • the indoor unit 203 has a partition portion 214.
  • the partition portion 214 projects from a position substantially central in the vertical direction toward the rear of the casing 12 at the rear portion of the straightening portion 151.
  • the partition portion 214 vertically partitions the space in front of the axial flow fan 11 in the casing 12.
  • the indoor unit 203 has a partition portion 214. Therefore, the air sent from the axial flow fan 11 does not interfere in the vertical direction, and the wind speed is not lost. Therefore, the indoor unit 203 of the air conditioner 1 can blow air far into the indoor space.
  • the inflow port 21 of the indoor heat exchanger 10 is formed so as to be located below the partition portion 214 when the indoor heat exchanger 10 acts as a condenser and the indoor unit 203 heats.
  • the outlet 22 of the indoor heat exchanger 10 is formed so as to be located above the partition portion 214 when the indoor heat exchanger 10 acts as a condenser.
  • a high-temperature and high-pressure gas refrigerant is flowing near the inflow port 21. Therefore, the air that has passed through the lower part of the indoor heat exchanger 10 in which the inflow port 21 is formed is heat-exchanged with a high-temperature and high-pressure gas refrigerant, and the temperature is high. Further, a liquid refrigerant is flowing in the vicinity of the outlet 22. Therefore, the air that has passed through the upper part of the indoor heat exchanger 10 in which the outlet 22 is formed exchanges heat with the liquid refrigerant, and the temperature is low. That is, the temperature of the air that has passed through the lower part of the indoor heat exchanger 10 is higher than that of the air that has passed through the upper part of the indoor heat exchanger 10.
  • the indoor unit 203 since the indoor unit 203 has the partition portion 214, the air that has passed through the upper part of the indoor heat exchanger 10 and the air that has passed through the lower part of the indoor heat exchanger 10 pass through the axial fan 11. After that, it's hard to associate. Therefore, the air blown out from the first outlet 42 has a high temperature because it is air that has been heat-exchanged with a high-temperature and high-pressure gas refrigerant. Further, since the air blown out from the fourth outlet 45 is the air that has been heat-exchanged with the liquid refrigerant, the temperature is low and the difference from the room temperature is small.
  • the inflow port 21 of the indoor heat exchanger 10 is formed so as to be located below the partition portion 214 when the indoor heat exchanger 10 acts as a condenser.
  • the air blown out from the indoor unit rises because the temperature is higher than the indoor temperature and the density is low. Further, the higher the temperature of the blown air is blown from below the indoor unit, the wider the space spreads until it rises.
  • the air that is heat-exchanged with the high-temperature and high-pressure gas refrigerant and has a high temperature is blown out from the first outlet 42. Therefore, the indoor unit 203 sends high-temperature air to a wider space when the indoor heat exchanger 10 acts as a condenser, as compared with the case where the inflow port 21 is formed above the partition portion 214. be able to.
  • the outlet 22 of the indoor heat exchanger 10 is formed so as to be located above the partition portion 214 when the indoor heat exchanger 10 acts as a condenser. There is. Since the air blown out from the fourth outlet 45 has exchanged heat with the liquid refrigerant, the temperature difference from the indoor air is small. Therefore, it is difficult for the air blown out from the fourth outlet 45 to rise in the room. Therefore, the indoor unit 203 is blown out from the fourth outlet 45 as compared with the case where the inflow port 21 is formed above the partition portion 214 when the indoor heat exchanger 10 acts as a condenser. It can send air farther.
  • the rectifying unit 151 in the third embodiment has an apex in which the front portion expands and the rear portion projects toward the axial fan 11 as in the rectifying unit 152 of the modified example 1 of the second embodiment. It may be pyramid-shaped.
  • FIG. 11 is a configuration diagram showing the indoor unit 203A according to the first modification of the third embodiment.
  • FIG. 11 is a schematic cross-sectional view of the indoor unit 203A cut at a position corresponding to the cross section taken along the line AA of FIG.
  • a plurality of axial flow fans 11 are provided side by side in the vertical direction.
  • the partition portion 214 is located between the respective axial flow fans 11.
  • the air sent from the axial fan 11 provided above and the air sent from the axial fan 11 provided below do not interfere with each other, and the wind speed is not lost. Therefore, the indoor unit 203A can blow air far into the indoor space.
  • the rectifying unit 151 in the third embodiment may have a shape in which two quadrangular pyramids are arranged in the vertical direction as in the rectifying unit 153 of the modified example 2 of the second embodiment.
  • FIG. 12 is a configuration diagram showing an indoor unit 303 according to the fourth embodiment.
  • FIG. 12 is a schematic cross-sectional view of the indoor unit 303 cut at a position corresponding to the cross section taken along the line AA of FIG.
  • the arrow on the arc shown in practice indicates the direction in which the lower damper 316 and the upper damper 317 rotate.
  • the fourth embodiment differs from the first embodiment in that it has a lower damper 316 and an upper damper 317.
  • the same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
  • the lower portion and the upper portion of the rectifying unit 351 of the fourth embodiment are not curved.
  • One side portion and the other side portion of the rectifying unit 351 may or may not be curved.
  • the lower portion and the upper portion of the rectifying unit 351 may be curved.
  • the indoor unit 303 has a lower damper 316 and an upper damper 317.
  • the lower damper 316 is a plate-shaped member connected to the lower part of the fan casing 13 and covering the first outlet 42.
  • the lower damper 316 opens and closes with the lower part of the fan casing 13 as a fulcrum. When the lower damper 316 is open, air is blown out from the first outlet 42. Further, when the lower damper 316 is closed, air is not blown out from the first outlet 42.
  • the upper damper 317 is a plate-shaped member connected to the upper part of the fan casing 13 and covering the fourth outlet 45.
  • the upper damper 317 opens and closes with the upper part of the fan casing 13 as a fulcrum. When the upper damper 317 is open, air is blown out from the fourth outlet 45. Further, when the upper damper 317 is closed, air is not blown out from the fourth outlet 45.
  • the indoor unit 303 may have a damper that covers each of the second outlet 43 and the third outlet 44.
  • the front panel 32 has a damper receiver 361 and a damper receiver 362.
  • the damper receiver 361 projects toward the rear of the casing 12 and extends so as to face the lower damper 316.
  • the damper receiver 361 is a member that comes into contact with the lower damper 316 when the lower damper 316 is closed.
  • the damper receiver 362 projects toward the rear of the casing 12 and extends so as to face the upper damper 317.
  • the damper receiver 362 is a member that comes into contact with the upper damper 317 when the upper damper 317 is closed.
  • the fan casing 13 has a damper receiver 371 and a damper receiver 372.
  • the damper receiver 371 projects from the front surface of the fan casing 13 toward the front of the casing 12 and extends so as to face the lower damper 316.
  • the damper receiver 371 is a member that comes into contact with the lower damper 316 when the lower damper 316 is open.
  • the damper receiver 372 projects from the front surface of the fan casing 13 toward the front of the casing 12 and extends so as to face the upper damper 317.
  • the damper receiver 372 is a member that comes into contact with the upper damper 317 when the upper damper 317 is open.
  • FIG. 13 is a configuration diagram showing an indoor unit 303 according to the fourth embodiment.
  • FIG. 13 is a schematic cross-sectional view of the indoor unit 303 cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 13, the arrow shown by the solid line indicates the air flow during the top blowing operation.
  • FIG. 14 is a configuration diagram showing the indoor unit 303 according to the fourth embodiment.
  • FIG. 14 is a schematic cross-sectional view of the indoor unit 303 cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 14, the arrow shown by the solid line indicates the flow of air during the downblow operation.
  • a blowing method such as an upper blowing operation or a lower blowing operation is set by the user.
  • the control device closes the lower damper 316 and opens the upper damper 317. Therefore, as shown in FIG. 13, the indoor unit 303 does not blow out air from the first outlet 42 during the top blowing operation. Therefore, the amount of air blown out from the second outlet 43, the third outlet 44, and the fourth outlet 45 increases.
  • the control device closes the upper damper 317 and opens the lower damper 316. Therefore, as shown in FIG. 14, the indoor unit 303 does not blow out air from the fourth outlet 45 during the lower blowing operation. Therefore, the amount of air blown out from the first outlet 42, the second outlet 43, and the third outlet 44 increases.
  • the indoor unit 303 has a lower damper 316 and an upper damper 317. Therefore, the indoor unit 303 can perform the top blowing operation to increase the amount of air discharged from the fourth outlet 45 by closing the first outlet 42. Further, the indoor unit 303 can perform a lower blowing operation for increasing the amount of air discharged from the first outlet 42 by closing the fourth outlet 45. In this way, the indoor unit 303 can change the position for sending air according to the user's setting. As a result, the heat-exchanged air can be sent to the place desired by the user.
  • the rectifying unit 151 in the fourth embodiment has an apex in which the front portion is widened and the rear portion projects toward the axial fan 11 as in the rectifying unit 152 of the modified example 1 of the second embodiment. It may be pyramid-shaped.
  • FIG. 15 is a configuration diagram showing the indoor unit 303A according to the first modification of the fourth embodiment.
  • FIG. 15 is a schematic cross-sectional view of the indoor unit 303A cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 15, the arrow on the arc shown in practice indicates the direction in which the lower damper 316, the upper damper 317, and the internal damper 320 rotate.
  • the indoor unit 303A has a first plate 318, a second plate 319, and an internal damper 320.
  • the first plate 318 connects the inner side surface of the first side surface panel 33 and the inner side surface of the second side surface panel 34. That is, the first plate 318 connects the facing inner side surfaces of the casing 12.
  • the first plate 318 faces the axial flow fan 11 provided below. Further, the first plate 318 has a damper receiver 381 at the upper portion.
  • the first plate 318 may have a member corresponding to the rectifying unit 152 of the first modification of the second embodiment.
  • the second plate 319 connects the inner side surface of the first side surface panel 33 and the inner side surface of the second side surface panel 34. That is, the second plate 319 connects the facing inner side surfaces of the casing 12.
  • the second plate 319 faces the axial flow fan 11 provided above. Further, the second plate 319 is arranged above the first plate 318 at a distance from the upper part of the first plate 318.
  • the second plate 319 has a damper receiver 382 at the lower portion.
  • the second plate 319 may have a member corresponding to the rectifying unit 152 of the first modification of the second embodiment.
  • the internal damper 320 is a plate-shaped member extending in the left-right direction of the casing 12.
  • the rear portion of the internal damper 320 is supported by the fan casing 13, and the front portion rotates between the upper portion of the first plate 318 and the lower portion of the second plate 319.
  • the front portion of the internal damper 320 is located on the lower side of the second plate 319, the amount of air blown out from the fourth outlet 45 increases.
  • the front portion of the internal damper 320 is located on the upper side of the first plate 318, the amount of air blown out from the first outlet 42 increases.
  • the front portion of the internal damper 320 may be stopped in a state of being located between the upper portion of the first plate 318 and the lower portion of the second plate 319.
  • the damper receiver 381 projects upward and extends so as to face the internal damper 320.
  • the damper receiver 381 restricts the internal damper 320 from rotating downward when it comes into contact with the front portion of the internal damper 320.
  • the damper receiver 382 projects downward and extends so as to face the internal damper 320.
  • the damper receiver 382 regulates the internal damper 320 from rotating upward when it comes into contact with the front portion of the internal damper 320.
  • FIG. 16 is a configuration diagram showing an indoor unit 303A according to the first modification of the fourth embodiment.
  • FIG. 16 is a schematic cross-sectional view of the indoor unit 303A cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 16, the arrow shown by the solid line indicates the air flow during the top blowing operation.
  • FIG. 17 is a configuration diagram showing the indoor unit 303A according to the first modification of the fourth embodiment.
  • FIG. 17 is a schematic cross-sectional view of the indoor unit 303A cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 17, the arrow shown by the solid line represents the flow of air during the downblow operation. As shown in FIG.
  • the internal damper 320 is in contact with the damper receiver 381 when the indoor unit 303A is performing the top blowing operation. Further, as shown in FIG. 17, the internal damper 320 is in contact with the damper receiver 382 when the indoor unit 303A is performing the bottom blow operation.
  • the internal damper 320 is located on the upper side of the first plate 318 when the indoor unit 303A is performing the top blowing operation. Therefore, when the indoor unit 303A is performing the top blowing operation, the air sent forward from the axial fan 11 flows upward along the internal damper 320 and is guided to the fourth outlet 45. Further, the internal damper 320 is located on the lower side of the second plate 319 when the indoor unit 303A is performing the bottom blow operation. Therefore, when the indoor unit 303A is performing the downward blowing operation, the air sent forward from the axial fan 11 flows downward along the internal damper 320 and is guided to the first outlet 42. In this way, the indoor unit 303A can blow out more air in the set blowing direction by rotating the internal damper 320.
  • FIG. 18 is a configuration diagram showing an indoor unit 403 according to the fifth embodiment.
  • FIG. 18 is a schematic cross-sectional view of the indoor unit 403 cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 18, the arrow shown by the solid line represents the air flow.
  • the fifth embodiment differs from the second embodiment in that the axial flow fan 11 is inclined upward.
  • the same parts as those in the second embodiment are designated by the same reference numerals, and the description thereof will be omitted, and the differences from the second embodiment will be mainly described.
  • the axial flow fan 11 is inclined upward toward the fourth outlet 45.
  • the axial flow fan 11 may be inclined toward the first outlet 42, the second outlet 43, or the third outlet 44.
  • the axial flow fan 11 is inclined with respect to the vertical direction. Therefore, the indoor unit 403 can increase the air volume in the direction in which the axial fan 11 is tilted. Therefore, the indoor unit 403 can send air far away in the direction in which the axial fan 11 is tilted.
  • the rectifying unit 151 in the fifth embodiment has an apex in which the front portion expands and the rear portion projects toward the axial fan 11 as in the rectifying unit 152 of the modified example 1 of the second embodiment. It may be pyramid-shaped.
  • FIG. 19 is a configuration diagram showing an indoor unit 403A according to the first modification of the fifth embodiment.
  • FIG. 19 is a schematic cross-sectional view of the indoor unit 403A cut at a position corresponding to the cross section taken along the line AA of FIG. Further, in FIG. 19, the arrow shown by the solid line represents the air flow.
  • a plurality of axial flow fans 11 are provided side by side in the vertical direction. Further, the axial flow fan 11 provided above is inclined upward, and the axial flow fan 11 provided below is inclined downward.
  • the air sent from the axial flow fan 11 provided above and the air sent from the axial flow fan 11 provided below do not interfere with each other, and the wind speed is not lost. Therefore, the indoor unit 403A of the air conditioner 1 can blow air far into the indoor space.
  • the rectifying unit 151 in the fifth embodiment may have a shape in which two quadrangular pyramids are arranged in the vertical direction as in the rectifying unit 153 of the modified example 2 of the second embodiment.
  • each axial flow fan 11 may be provided so as to rotate in the vertical direction and laterally. Further, the inclination angle of each axial flow fan 11 may be arbitrarily adjusted according to the blowing direction set by the user. In these cases as well, the indoor unit 403A can increase the air volume in the direction in which the axial fan 11 is tilted. Therefore, the indoor unit 403A can send air far in the direction in which the axial fan 11 is tilted.

Landscapes

  • 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)
  • Air-Flow Control Members (AREA)
PCT/JP2020/024126 2020-06-19 2020-06-19 空気調和機の室内機 Ceased WO2021255916A1 (ja)

Priority Applications (3)

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JP2022531216A JP7403651B2 (ja) 2020-06-19 2020-06-19 空気調和機の室内機
CN202080098815.1A CN115667813A (zh) 2020-06-19 2020-06-19 空调机的室内机
PCT/JP2020/024126 WO2021255916A1 (ja) 2020-06-19 2020-06-19 空気調和機の室内機

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CN115682114A (zh) * 2022-11-08 2023-02-03 珠海格力电器股份有限公司 一种空调器

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JPS483081Y1 (https=) * 1970-05-13 1973-01-26
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