WO2023276588A1 - Système de climatisation - Google Patents

Système de climatisation Download PDF

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Publication number
WO2023276588A1
WO2023276588A1 PCT/JP2022/023037 JP2022023037W WO2023276588A1 WO 2023276588 A1 WO2023276588 A1 WO 2023276588A1 JP 2022023037 W JP2022023037 W JP 2022023037W WO 2023276588 A1 WO2023276588 A1 WO 2023276588A1
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WIPO (PCT)
Prior art keywords
air
unit
indoor
air conditioner
heat exchanger
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PCT/JP2022/023037
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English (en)
Japanese (ja)
Inventor
晋司 吉川
真輔 原田
秀彦 片岡
文香 増田
Original Assignee
ダイキン工業株式会社
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Publication of WO2023276588A1 publication Critical patent/WO2023276588A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • F24F1/0038—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room in combination with simultaneous exhaustion of inside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems

Definitions

  • the present disclosure relates to air conditioning systems.
  • Patent Document 1 discloses a ventilation and air conditioning structure for a highly insulated and highly airtight house, which includes an attic air conditioner and a ventilation device.
  • the air conditioning load at the time of start-up is a predetermined amount when the air conditioner starts operating in a state where the air conditioner has been stopped for a certain long period of time (for example, when a resident returns home from a long stay). This is the air-conditioning load required to bring the indoor temperature to the set temperature within a period of time (for example, about 15 minutes).
  • the purpose of this disclosure is to reduce the cost of air conditioning systems installed in houses.
  • a first aspect of the present disclosure is an air conditioning system (50) installed in a house (1) having a Ua value of 0.6 W/m 2 K or less and a C value of 2.0 cm 2 /m 2 or less, , an air conditioner (200) for cooling and heating the indoor space (5), and a ventilation device (10) for constantly supplying outdoor air and discharging indoor air, wherein the ventilation device (10) A first heat exchanger (21) for exchanging heat between the outdoor air supplied to the indoor space (5) and the indoor air discharged to the outdoor space (6);
  • the air conditioner (200) has a rated cooling capacity per unit floor area of 110 W/m 2 or less, and the rated heating capacity per unit floor area is 138 W/m 2 or less.
  • the house (1) in which the air conditioning system (50) of the first aspect is installed has a Ua value (envelope average heat transmission coefficient), which is an index of heat insulation performance, of 0.6 W/m 2 K or less, and has airtight performance.
  • C value (equivalent gap area), which is an index of , is 2.0 cm 2 /m 2 or less.
  • the ventilator (10) that constitutes the air conditioning system (50) always operates and continues to process part of the air conditioning load (sensible heat load and latent heat load) of the house (1) all the time.
  • the ventilator (10) supplies outdoor air that has passed through both the first heat exchanger (21) and the second heat exchanger (25) to the indoor space (5), thereby Handle the air conditioning load. Therefore, the air conditioner (200) with a rated cooling capacity per unit floor area of 110 W/m 2 or less and a rated heating capacity per unit floor area of 138 W/m 2 or less will handle the air conditioning load at startup. can.
  • a second aspect of the present disclosure is the air conditioning system (50) of the first aspect, wherein the ventilation device (10) has a dry-bulb temperature of outdoor air of 35°C and a wet-bulb temperature of 31°C,
  • the latent heat treatment capacity of the second heat exchanger (25) per unit floor area when the indoor air has a dry-bulb temperature of 27°C and a wet-bulb temperature of 20°C is 5 W/m 2 or more and 20 W/m 2 or less. is.
  • the second heat exchanger (25) of the ventilator (10) exhibits a predetermined latent heat treatment capacity.
  • a third aspect of the present disclosure is the air conditioning system (50) of the first or second aspect, wherein the air conditioner (200) includes an outdoor unit (211) and is connected to the outdoor unit (211).
  • a first indoor unit (212a) and a second indoor unit (212b) are provided, and a refrigerant is supplied between the outdoor unit (211) and the first indoor unit (212a) and the second indoor unit (212b). is circulated to perform the refrigeration cycle.
  • the first indoor unit (212a) and the second indoor unit (212b) are connected to the outdoor unit (211).
  • a fourth aspect of the present disclosure is the air conditioning system (50) of the first or second aspect, wherein the air conditioner (A) adjusts the temperature of the sucked indoor air, A main unit (220) for blowing out air as conditioned air, and a first blowing unit (221a) and a second blowing unit (221b) for blowing out the conditioned air sent from the main unit (220) to the indoor space (5). ).
  • the conditioned air blown out from the body unit (220) is blown into the indoor space (5) from the first blowout unit (221a) and the second blowout unit (221b). be.
  • FIG. 1 is a schematic configuration diagram of a house in which the air conditioning system of Embodiment 1 is installed.
  • FIG. 2 is a schematic configuration diagram of an air conditioner that constitutes the air conditioner of Embodiment 1.
  • FIG. 3 is a schematic configuration diagram of a ventilation unit that constitutes the ventilation device of Embodiment 1.
  • FIG. 4 is a schematic configuration diagram of a refrigerant circuit of the ventilation device of Embodiment 1.
  • FIG. FIG. 5 is a schematic configuration diagram of a house in which the air conditioning system of Embodiment 2 is installed.
  • FIG. 6 is a schematic configuration diagram of a house in which the air conditioning system of Embodiment 3 is installed.
  • FIG. 7 is a schematic configuration diagram of a refrigerant circuit of a ventilation device in a first modified example of another embodiment.
  • Embodiment 1 >> The air conditioning system (50) of Embodiment 1 will be described.
  • an air conditioning system (50) of the present embodiment is installed in a house (1).
  • the air conditioning system (50) includes an air conditioner (200) and a ventilator (10).
  • living rooms (2a to 2d) such as living rooms and private rooms and non-living rooms (3a, 3b) such as corridors and toilets are provided on the first and second floors, respectively.
  • non-living rooms (3a, 3b) such as corridors and toilets are provided on the first and second floors, respectively.
  • These living rooms (2a to 2d) and non-living rooms (3a, 3b) constitute an indoor space (5).
  • an attic space (8) is formed above the ceiling panel (7).
  • a house (1) in which an air conditioning system (50) is installed is a so-called highly airtight and highly insulated house.
  • the Ua value (hull average heat transmission coefficient) of this house (1) is 0.6 W/m 2 K or less.
  • the Ua value is an index of heat insulation performance, and is calculated by dividing the "total amount of heat that escapes from the inside of the house to the outside" by the "cover area of the house.”
  • the C value (corresponding gap area) of this house (1) is 2.0 cm 2 /m 2 or less.
  • the C value is an index of airtight performance, and is calculated by dividing the "gap area of the entire house" by the "total floor area of the house”.
  • the air conditioner (200) cools and heats the indoor space (5).
  • the air conditioner (200) of this embodiment is composed of one air conditioner (210).
  • the air conditioner (210) includes one outdoor unit (211) and four indoor units (212a-212d).
  • the number of indoor units (212a to 212d) included in the air conditioner (210) is merely an example.
  • the outdoor unit (211) is installed in the outdoor space (6).
  • the four indoor units (212a-212d) are installed in different living rooms (2a-2d). Specifically, the first indoor unit (212a) is used in the first room (2a), the second indoor unit (212b) is used in the second room (2b), and the third indoor unit (212c) is used in the third room (2c). Second, the fourth indoor unit (212d) is installed in the fourth living room (2d).
  • Each indoor unit (212a to 212d) of the present embodiment is a wall-mounted indoor unit.
  • each indoor unit (212a-212d) is connected to the outdoor unit (211) through the liquid side connecting pipe (215) and the gas side connecting pipe (216). Connected.
  • Each indoor unit (212a-212d) is connected in parallel with each other.
  • the air conditioner (210) performs a vapor compression refrigeration cycle by circulating refrigerant between the outdoor unit (211) and the indoor units (212a-212d).
  • the air conditioner (210) performs a cooling operation for cooling the indoor space (5) and a heating operation for heating the indoor space (5).
  • each indoor unit (212a-212d) cools the indoor air sucked from the indoor space (5) and blows out the cooled indoor air into the indoor space (5).
  • the temperature of the indoor air decreases and the moisture in the indoor air condenses. Therefore, in the cooling operation of the air conditioner (210), each indoor unit (212a-212d) processes the sensible heat load and latent heat load of the corresponding room (2a-2d).
  • the evaporation temperature of the refrigerant in the indoor units (212a to 212d) is set above the dew point of the indoor air, and only the indoor air is cooled in the indoor units (212a to 212d). good too.
  • each indoor unit (212a-212d) of the air conditioner (210) processes only the sensible heat load of the corresponding living room (2a-2d).
  • each indoor unit (212a-212d) heats the indoor air sucked from the indoor space (5) and blows out the heated indoor air into the indoor space (5).
  • the indoor air temperature rises in the indoor units (212a-212d). Therefore, in the heating operation of the air conditioner (210), each indoor unit (212a-212d) processes the sensible heat load of the corresponding living room (2a-2d).
  • Each indoor unit (212a to 212d) is individually switched between an operating state and a resting state in each of cooling operation and heating operation.
  • the indoor units (212a-212d) that are in operation cool or heat the indoor air that they draw in.
  • the resting indoor units (212a-212d) do not regulate the temperature of the indoor air.
  • the air conditioner (210) of the present embodiment individually switches between execution and stop of air conditioning in a plurality of living rooms (2a to 2d) provided in the house (1) for each living room (2a to 2d). be able to.
  • the air conditioner (200) of the present embodiment has a rated cooling capacity per unit floor area of 110 W/m 2 or less and a rated heating capacity per unit floor area of 138 W. /m 2 or less.
  • the rated cooling capacity per unit floor area of the air conditioner (200) is desirably 55 W/m 2 or more.
  • the rated heating capacity per unit floor area of the air conditioner (200) is desirably 69 W/m 2 or more.
  • the cooling load per unit floor area is stipulated as 220 W/m 2 for a south-facing Japanese-style room in a detached house (wooden, one-story).
  • the heating load per unit floor area is specified as 275 W/m 2 .
  • the air conditioner (210) of this embodiment is a multi-type air conditioner.
  • the rated cooling capacity of the multi-type air conditioner is the standard rated condition T1 (indoor intake air temperature: dry bulb temperature 27 ° C, wet bulb temperature 19 °C, outdoor intake air temperature: dry bulb temperature 35 °C, wet bulb temperature 24 °C).
  • the cooling capacity of a multi-type air conditioner is measured by a test based on "6.1 Cooling capacity test" of "JIS B 8615-3:2015".
  • the rated heating capacity of the multi-type air conditioner is the standard test condition H1 (indoor intake air temperature: dry bulb temperature 20 ° C, wet bulb temperature 15 °C, outdoor intake air temperature: dry bulb temperature 7°C, wet bulb temperature 6°C).
  • the heating capacity of a multi-type air conditioner is measured by a test based on "7.1 Heating capacity test” of "JIS B 8615-3:2015”.
  • the air conditioner (200) is composed of one air conditioner (210). Therefore, the rated cooling capacity and rated heating capacity of the air conditioner (200) are respectively the rated cooling capacity and rated heating capacity of one air conditioner (210) that constitutes the air conditioner (200).
  • the rated cooling capacity per unit floor area of the air conditioner (200) is defined as "the rated cooling capacity of one air conditioner (210) constituting the air conditioner (200)". 200) is installed, divided by the total floor area of each of the multiple rooms (2a to 2d) in the house (1).
  • the rated heating capacity per unit floor area of the air conditioner (200) is defined as "the rated heating capacity of one air conditioner (210) constituting the air conditioner (200)” Calculated by dividing by the total floor area of each of the multiple rooms (2a to 2d) of the house (1) to be installed.
  • Ventilator The ventilator (10) ventilates the indoor space (5).
  • a ventilator (10) supplies outdoor air to the indoor space (5) and exhausts indoor air to the outdoor space (6).
  • the ventilation device (10) includes two ventilation units (11a, 11b) and two heat source units (80a, 80b).
  • the number of ventilation units (11a, 11b) and heat source units (80a, 80b) included in the ventilation system (10) is merely an example.
  • the first ventilation unit (11a) is installed in the ceiling space (8) on the first floor of the house (1), and the second ventilation unit (11b) is installed on the second floor of the house (1). Installed in the ceiling space (8).
  • illustration of the heat source units (80a, 80b) is omitted.
  • the first ventilation unit (11a) is paired with the first heat source unit (80a) and the second ventilation unit (11b) is paired with the second heat source unit (80b).
  • each ventilation unit (11a, 11b) is connected to an outside air duct (D1), an exhaust duct (D2), and an air supply duct (D3).
  • the outdoor air duct (D1) opens into the outdoor space (6) at its inflow end and connects to the corresponding ventilation units (11a, 11b) at its outflow end.
  • the exhaust duct (D2) has an inflow end connected to the corresponding ventilation unit (11a, 11b) and an outflow end opened to the outdoor space (6).
  • the supply air duct (D3) connects to the corresponding ventilation unit (11a, 11b) at the inlet end.
  • the ventilation system (10) is equipped with four air supply units (30a-30d).
  • the number of air supply units (30a to 30d) included in the ventilator (10) is merely an example.
  • the first air supply unit (30a) is used in the first room (2a)
  • the second air supply unit (30b) is used in the second room (2b)
  • the third air supply unit (30c) is used in the third room (2c).
  • the fourth air supply unit (30d) are arranged in the fourth living room (2d), respectively.
  • Each air supply unit (30a-30d) is attached to the bottom surface of the ceiling panel (7).
  • Each air supply unit (30a-30d) is connected to the outflow end of an air supply duct (D3).
  • Each air supply unit (30a-30d) blows out the air sent from the air supply duct (D3) to the indoor space (5).
  • the first air supply unit (30a) and the second air supply unit (30b) are connected to the first ventilation unit (11a) via an air supply duct (D3).
  • a 1st air supply unit (30a) blows off the air supplied from a 1st ventilation unit (11a) to a 1st living room (2a).
  • the second air supply unit (30b) blows out the air supplied from the first ventilation unit (11a) to the second living room (2b).
  • the third air supply unit (30c) and the fourth air supply unit (30d) are connected to the second ventilation unit (11b) via an air supply duct (D3).
  • a 3rd air supply unit (30c) blows off the air supplied from a 2nd ventilation unit (11b) to a 3rd living room (2c).
  • the fourth air supply unit (30d) blows out the air supplied from the second ventilation unit (11b) to the fourth living room (2d).
  • each ventilation unit (11a, 11b) is connected to the corresponding heat source unit (80a, 80b) through a first communication pipe (86) and a second communication pipe (87).
  • a refrigerant circuit (R) is composed of the paired ventilation units (11a, 11b) and heat source units (80a, 80b) and the first communication pipe (86) and the second communication pipe (87) that connect them. be done.
  • the refrigerant circuit (R) is filled with refrigerant.
  • the refrigerant is, for example, R32 (difluoromethane).
  • the refrigerant circuit (R) performs a vapor compression refrigeration cycle by circulating refrigerant.
  • each ventilation unit (11a, 11b) has a casing (12).
  • the casing (12) of each ventilation unit (11a, 11b) is formed with an air supply path (13) and an exhaust path (14).
  • Each ventilation unit (11a, 11b) also has an air supply fan (22), an exhaust fan (23), a total heat exchanger (21), and a heat utilization heat exchanger (25).
  • the casing (12) is shaped like a rectangular parallelepiped.
  • the casing (12) has an upper plate (12a), a lower plate (12b) and four side plates.
  • the four side plates include a first side plate (12c) and a second side plate (12d) facing each other.
  • the upper plate (12a) constitutes the upper surface of the casing (12).
  • the lower plate (12b) constitutes the lower surface of the casing (12).
  • the first side plate (12c) forms a side surface on one longitudinal end side of the casing (12).
  • the second side plate (12d) forms a side surface on the other longitudinal end side of the casing (12).
  • a first duct connection portion (C1) and a second duct connection portion (C2) are provided on the first side plate (12c).
  • the first duct connection portion (C1) and the second duct connection portion (C2) are formed in a cylindrical shape.
  • the first duct connection portion (C1) and the second duct connection portion (C2) protrude laterally from the outer surface of the first side plate (12c).
  • An outflow end of an outside air duct (D1) is connected to the first duct connection portion (C1).
  • the inflow end of the exhaust duct (D2) is connected to the second duct connection (C2).
  • a third duct connection portion (C3) is provided on the second side plate (12d).
  • the third duct connection portion (C3) is formed in a cylindrical shape.
  • the third duct connection portion (C3) protrudes laterally from the outer surface of the second side plate (12d).
  • the inflow end of the supply air duct (D3) is connected to the third duct connection (C3).
  • An interior panel (15) is provided on the lower plate (12b) of the casing (12). As shown in FIG. 1, the interior panel (15) is provided inside a ventilation opening (7a) passing through the ceiling panel (7). The interior panel (15) faces the interior space (5).
  • a suction port (15a) is formed in the indoor panel (15).
  • the inlet (15a) formed in the casing (12) of the first ventilation unit (11a) communicates the inflow end of the exhaust path (14) with the non-living room (3a) on the first floor.
  • the inlet (15a) formed in the casing (12) of the second ventilation unit (11b) communicates the inflow end of the exhaust path (14) with the non-living room (3b) on the second floor.
  • a first partition plate (16) and a second partition plate (17) are provided inside the casing (12).
  • the first partition plate (16) defines a space between the first side plate (12c), the upper plate (12a), the lower plate (12b), and the total heat exchanger (21) as the first flow path (P1). It is divided into a second channel (P2).
  • the first flow path (P1) communicates with the first duct connection (C1).
  • the first flow path (P1) forms a flow path of the air supply path (13) on the upstream side of the total heat exchanger (21).
  • the second flow path (P2) communicates with the second duct connection (C2).
  • the second flow path (P2) forms a flow path of the exhaust path (14) on the downstream side of the total heat exchanger (21).
  • the second partition plate (17) divides the space between the second side plate (12d), the upper plate (12a), the lower plate (12b), and the total heat exchanger (21) into the third flow path (P3). It is divided into a fourth channel (P4).
  • the third flow path (P3) communicates with the third duct connection (C3).
  • the third flow path (P3) forms a flow path of the air supply path (13) on the downstream side of the total heat exchanger (21).
  • the fourth flow path (P4) is connected to the suction port (15a) of the interior panel (15).
  • the fourth flow path (P4) forms a flow path of the exhaust path (14) on the upstream side of the total heat exchanger (21).
  • the total heat exchanger (21) corresponds to the first heat exchanger of the present disclosure.
  • the total heat exchanger (21) is a cross-flow heat exchanger.
  • the total heat exchanger (21) exchanges heat between air flowing through the air supply passage (13) and air flowing through the exhaust passage (14).
  • An air supply side internal flow path (21a) and an exhaust side internal flow path (21b) are formed inside the total heat exchanger (21).
  • the air supply side internal flow path (21a) and the exhaust side internal flow path (21b) extend in directions perpendicular to each other.
  • the inflow part of the air supply side internal flow path (21a) is connected to the first flow path (P1).
  • An outflow portion of the air supply side internal channel (21a) is connected to the third channel (P3).
  • An inflow portion of the exhaust-side internal channel (21b) is connected to the fourth channel (P4).
  • An outflow portion of the exhaust-side internal channel (21b) is connected to the second channel (P2).
  • the total heat exchanger (21) transfers heat between the air in the supply side internal flow path (21a) and the air in the exhaust side internal flow path (21b).
  • the total heat exchanger (21) moves moisture between the air in the air supply side internal flow path (21a) and the air in the exhaust side internal flow path (21b).
  • the total heat exchanger (21) exchanges latent heat and sensible heat between the air in the air supply side internal flow path (21a) and the air in the exhaust side internal flow path (21b).
  • the air supply fan (22) is arranged in the second flow path (P2).
  • the exhaust fan (23) is arranged in the third flow path (P3).
  • the air supply fan (22) conveys the air in the air supply path (13).
  • the exhaust fan (23) conveys the air in the exhaust path (14).
  • the intake fan (22) and the exhaust fan (23) are of the Sirocco type.
  • the air supply fan (22) and the exhaust fan (23) may be turbo type or propeller type.
  • the ventilation unit (11a, 11b) has a filter (24).
  • a filter (24) is arranged in the first flow path (P1). In other words, the filter (24) is arranged upstream of the total heat exchanger (21) in the air supply path (13).
  • the filter (24) collects dust in outdoor air (OA).
  • a filter may be provided in the fourth channel (P4).
  • the utilization heat exchanger (25) corresponds to the second heat exchanger of the present disclosure.
  • the utilization heat exchanger (25) exchanges heat between the refrigerant flowing therein and the air flowing through the air supply passage (13).
  • the utilization heat exchanger (25) is a fin-and-tube air heat exchanger.
  • the utilization heat exchanger (25) is arranged in the third flow path (P3).
  • the utilization heat exchanger (25) is arranged downstream of the total heat exchanger (21) in the air supply path (13).
  • the utilization heat exchanger (25) is arranged in the third flow path (P3) between the air supply side internal flow path (21a) and the air supply fan (22).
  • the heat utilization heat exchanger (25) is arranged downstream of the total heat exchanger (21) in the outdoor air circulation path from the outdoor space (6) to the indoor space (5).
  • each heat source unit (80a, 80b) includes a compressor (82), a heat source heat exchanger (83), a switching mechanism (84) as elements of a refrigerant circuit (R). , and an expansion valve (85).
  • Each heat source unit (80a, 80b) also has a heat source fan (81).
  • Each heat source unit (80a, 80b) is arranged in the outdoor space (6).
  • the compressor (82) compresses the sucked refrigerant.
  • the compressor (82) discharges compressed refrigerant.
  • the compressor (82) is a rotary compressor such as a swing piston type, a rolling piston type, or a scroll type.
  • the compressor (82) is configured such that its rotation speed can be changed.
  • the heat source heat exchanger (83) is a fin-and-tube air heat exchanger.
  • the heat source heat exchanger (83) exchanges heat between the refrigerant flowing therein and the outdoor air.
  • the heat source fan (81) is arranged near the heat source heat exchanger (83).
  • the heat source fan (81) is a propeller fan.
  • the heat source fan (81) conveys air passing through the heat source heat exchanger (83).
  • the switching mechanism (84) changes the flow path of the refrigerant in the refrigerant circuit (R) so as to switch between the cooling refrigeration cycle and the heating refrigeration cycle.
  • the switching mechanism (84) is a four-way switching valve.
  • the switching mechanism (84) has a first port (84a), a second port (84b), a third port (84c) and a fourth port (84d).
  • a first port (84a) of the switching mechanism (84) is connected to a discharge portion of the compressor (82).
  • the second port (84b) of the switching mechanism (84) is connected to the suction portion of the compressor (82).
  • the third port (84c) of the switching mechanism (84) is connected to the gas side end of the heat utilization heat exchanger (25) via the first communication pipe (86).
  • the fourth port (84d) of the switching mechanism (84) is connected to the gas side end of the heat source heat exchanger (83).
  • the switching mechanism (84) switches between the first state and the second state.
  • the first port (84a) communicates with the fourth port (84d) and the second port (84b) communicates with the third port (84c). communicate with.
  • the switching mechanism (84) in the second state indicated by broken lines in FIG. 4
  • the first port (84a) communicates with the third port (84c)
  • the second port (84b) communicates with the fourth port (84d). communicate with.
  • the expansion valve (85) has one end connected to the liquid side end of the heat source heat exchanger (83) and the other end connected to the liquid side end of the utilization heat exchanger (25) via the second communication pipe (87). Connect.
  • the expansion valve (85) is an electronic expansion valve whose degree of opening is adjustable.
  • each ventilation unit (11a, 11b) has a plurality of sensors. Specifically, each ventilation unit (11a, 11b) includes an outside air temperature sensor (111), an outside air humidity sensor (112), an inside air temperature sensor (113), an inside air humidity sensor (114), and a refrigerant temperature sensor (115). Prepare.
  • the outdoor air temperature sensor (111) detects the temperature of outdoor air (OA).
  • the outside air humidity sensor (112) detects the humidity (more precisely, relative humidity) of outdoor air (OA).
  • the indoor air temperature sensor (113) detects the temperature of indoor air (RA).
  • Room air humidity sensor (114) detects the humidity of room air (RA).
  • a refrigerant temperature sensor (115) is provided in the utilization heat exchanger (25). The refrigerant temperature sensor (115) detects the evaporation temperature or condensation temperature of the refrigerant in the heat utilization heat exchanger (25).
  • Each heat source unit (80a, 80b) is provided with a first controller (101).
  • Each ventilation unit (11a, 11b) is provided with a second controller (102).
  • the first control device (101) of the corresponding heat source unit (80a, 80b) and the second control device (102) of the ventilation unit (11a, 11b) are connected to each other by the communication line (W), and the control section (100) configure.
  • Each of the first controller (101) and the second controller (102) includes an MCU (Micro Control Unit), an electric circuit, and an electronic circuit.
  • the MCU includes a CPU (Central Processing Unit), memory, and communication interface.
  • the memory stores various programs to be executed by the CPU.
  • the first control device (101) receives the detection values of the outside air temperature sensor (111) and the outside air humidity sensor (112).
  • the first controller (101) controls the compressor (82), the heat source fan (81), the switching mechanism (84), and the expansion valve (85).
  • the second control device (102) receives the detection values of the inside air temperature sensor (113), the inside air humidity sensor (114), and the refrigerant temperature sensor (115).
  • the second controller (102) controls the air supply fan (22) and the exhaust fan (23).
  • the ventilator (10) continuously performs the ventilation operation of supplying the outdoor air to the indoor space (5) and discharging the indoor air to the outdoor space (6) without stopping. Therefore, in the ventilation units (11a, 11b) constituting the ventilator (10), the air supply fan (22) and the exhaust fan (23) are constantly operating. In addition, the ventilator (10) always supplies outdoor air to all the living rooms (2a to 2d) provided in the house (1).
  • the ventilator (10) performs a cooling operation for cooling the outdoor air supplied to the indoor space (5) during the ventilation operation, and a heating operation for heating the outdoor air supplied to the indoor space (5) during the ventilation operation. .
  • the refrigerant circuit (R) of the ventilator (10) performs a refrigeration cycle for cooling.
  • the refrigerant circulates as indicated by solid arrows in FIG. 4, the heat source heat exchanger (83) functions as a condenser, and the heat utilization heat exchanger (25) functions as an evaporator.
  • the exhaust fan (23) operates to take the indoor air (RA) into the fourth flow path (P4), and the air supply fan (22) operates to extract the outdoor air (OA ) is taken into the first channel (P1).
  • the air in the fourth flow path (P4) flows through the exhaust-side internal flow path (21b) of the total heat exchanger (21).
  • the air in the first flow path (P1) flows through the air supply side internal flow path (21a) of the total heat exchanger (21).
  • the indoor space (5) is cooled by the air conditioner (200).
  • the temperature of the indoor air (RA) will be lower than the temperature of the outdoor air (OA).
  • indoor air (RA) humidity will be lower than outdoor air (OA) humidity. Therefore, in the total heat exchanger (21), the air in the supply side internal flow path (21a) is cooled by the air in the exhaust side internal flow path (21b). At the same time, in the total heat exchanger (21), moisture in the air in the supply side internal flow path (21a) moves to the air in the exhaust side internal flow path (21b).
  • Ventilation units (11a, 11b) supply the air (outdoor air) cooled and dehumidified in the utilization heat exchanger (25) to the indoor space (5) as supply air (SA) through the supply air duct (D3). do.
  • SA supply air
  • D3 supply air duct
  • the ventilation units (11a, 11b) temporarily stop cooling the outdoor air in the heat utilization heat exchanger (25), and the outdoor air that has passed through the total heat exchanger (21) is used as it is in the indoor space. (5) may blow out.
  • the refrigerant circuit (R) of the ventilator (10) performs a refrigeration cycle for heating.
  • refrigerant circulates as indicated by dashed arrows in FIG. 4, the utilization heat exchanger (25) functions as a condenser, and the heat source heat exchanger (83) functions as an evaporator.
  • the exhaust fan (23) operates to take the indoor air (RA) into the fourth flow path (P4), and the air supply fan (22) operates to extract the outdoor air (OA ) is taken into the first channel (P1).
  • the air in the fourth flow path (P4) flows through the exhaust-side internal flow path (21b) of the total heat exchanger (21).
  • the air in the first flow path (P1) flows through the air supply side internal flow path (21a) of the total heat exchanger (21).
  • the indoor space (5) is heated by the air conditioner (200).
  • the temperature of the indoor air (RA) will be higher than the temperature of the outdoor air (OA).
  • indoor air (RA) humidity will be higher than outdoor air (OA) humidity. Therefore, in the total heat exchanger (21), the air in the supply side internal flow path (21a) is heated by the air in the exhaust side internal flow path (21b). At the same time, in the total heat exchanger (21), moisture in the air in the exhaust side internal flow path (21b) moves to the air in the air supply side internal flow path (21a).
  • the ventilation units (11a, 11b) supply the air (outdoor air) heated in the utilization heat exchanger (25) to the indoor space (5) as supply air (SA) through the air supply duct (D3).
  • SA supply air
  • D3 air supply duct
  • the ventilation units (11a, 11b) temporarily suspend the heating of the outdoor air in the heat utilization heat exchanger (25), and the outdoor air that has passed through the total heat exchanger (21) is used as it is in the indoor space. (5) may blow out.
  • Latent heat processing capacity of the heat exchanger used As described above, in the cooling operation of the ventilation system (10), the heat supplied to the indoor space (5) in the heat exchanger (25) of the ventilation unit (11a, 11b) is supplied to the indoor space (5). Dehumidification of the outdoor air is performed.
  • the latent heat treatment capacity per unit floor area of the heat exchanger (25) under predetermined standard conditions is 5 W/m 2 or more and 20 W/m 2 or less. be.
  • the latent heat treatment capacity per unit floor area of the heat exchanger (25) under these standard conditions may be 5 W/m 2 or more and 15 W/m 2 or less, or 5 W/m 2 or more and 10 W/m 2 or less.
  • the reference conditions are: "Outdoor air has a dry-bulb temperature of 35°C and a wet-bulb temperature of 31°C, indoor air has a dry-bulb temperature of 27°C and a wet-bulb temperature of 20°C, and the heat exchanger (25) The flow rate of the air passing through is the reference air volume.”
  • the conditions of the outdoor air and the indoor air are the same as the standard measurement conditions T4 described in Table 6 of Japanese Industrial Standard "JIS B 8639:2017”. Also, the reference air volume is set based on "3.2.15 Rated point" of Japanese Industrial Standards "JIS B 8628:2017".
  • the latent heat treatment capacity of the heat exchanger (25) used in the ventilation unit (11a, 11b) per unit floor area is calculated by dividing the "latent heat treatment capacity of the heat exchanger (25) used" into the "ventilation unit (11a, 11b) outdoor Calculated by dividing by the sum of the floor areas of all rooms (2a-2d) that supply air.
  • the latent heat treatment capacity per unit floor area of the heat exchanger (25) used in the first ventilation unit (11a) is "the heat exchanger used in the first ventilation unit (11a) Calculated by dividing the latent heat treatment capacity of (25) by the total floor area of the first room (2a) and second room (2b) supplied by the first ventilation unit (11a). be done.
  • the latent heat treatment capacity per unit floor area of the heat exchanger (25) used in the second ventilation unit (11b) is defined as the "latent heat treatment capacity of the heat exchanger (25) used in the second ventilation unit (11b)". It is calculated by dividing by "the sum of the floor areas of the third living room (2c) and the fourth living room (2d) supplied by the second ventilation unit (11b)".
  • Embodiment 1 10-1
  • the house (1) in which the air conditioning system (50) of the present embodiment is installed has a Ua value (envelope average heat transmission coefficient), which is an index of heat insulation performance, of 0.6 W/m 2 K or less, and has airtight performance.
  • the C value (equivalent gap area), which is an index, is 2.0 cm 2 /m 2 or less.
  • the outdoor air supplied to the indoor space (5) is supplied to the total heat exchanger (21) and the heat exchanger ( 25) in order.
  • the utilization heat exchanger (25) cools and dehumidifies the outdoor air during the cooling operation of the ventilator (10), and heats the outdoor air during the heating operation of the ventilator (10).
  • each ventilation unit (11a, 11b) constituting the ventilation system (10) constantly ventilates the corresponding living room (2a-2d).
  • the ventilator (10) reduces part of the air conditioning load (sensible heat load and latent heat load) of all rooms (2a to 2d). Always keep processing. Therefore, in the air conditioning system (50) of the present embodiment, compared to a conventional air conditioning system having a ventilation unit that is not equipped with a heat exchanger, it is necessary to perform processing when the air conditioning device (200) is started up. A certain air conditioning load can be reduced.
  • the air conditioner (200) with a rated cooling capacity per unit floor area of 110 W/m 2 or less and a rated heating capacity per unit floor area of 138 W/m 2 or less reduced the air conditioning load at startup. can be processed.
  • the rated cooling capacity per unit floor area of the air conditioner (200) of the present embodiment is the standard cooling per unit floor area defined in Table D.1 of Appendix D of "JIS C 9612:2013". Less than 50% of capacity.
  • the rated heating capacity per unit floor area of the air conditioner (200) of the present embodiment is the standard per unit floor area defined in Table D.1 of Appendix D of "JIS C 9612:2013" is less than 50% of the heating capacity of
  • the rated air conditioning capacity (rated cooling capacity or rated heating capacity) is significantly higher than the standard residential air conditioning load (cooling load or heating load).
  • An air conditioner (200) with a low operating time can be used to handle the air conditioning load at startup. Therefore, according to the present embodiment, the rated air conditioning capacity of the air conditioner (200) that constitutes the air conditioning system (50) is higher than that of the conventional air conditioning system that includes a ventilation unit that is not provided with a utilization heat exchanger. can be reduced, and as a result, the cost of the air conditioning system (50) can be reduced.
  • the latent heat treatment capacity of the heat exchanger (25) utilized per unit floor area under the above-described standard conditions is 5 W/m 2 or more. 20 W/m 2 or less. Therefore, according to the present embodiment, it is possible to lower the rated air conditioning capacity of the air conditioner (200) that constitutes the air conditioning system (50), thereby reducing the cost of the air conditioning system (50).
  • the outdoor air is dehumidified by heat exchange with the refrigerant in the heat-utilizing heat exchanger (25), and the dehumidified outdoor air is is supplied to the interior space (5).
  • the ventilator (10) of the present embodiment can actively dehumidify the outdoor air supplied to the indoor space (5).
  • the latent heat load of the indoor space (5) can be processed by supplying dehumidified outdoor air to the indoor space (5) by the ventilation device (10). Therefore, according to the present embodiment, the latent heat load of the indoor space (5) can be sufficiently processed even in a so-called highly airtight and highly insulated house (1), and as a result, the comfort of the indoor space (5) can be improved. can be improved.
  • an outdoor unit designed so that multiple indoor units can be connected has a larger refrigerating capacity than an outdoor unit designed so that only one indoor unit can be connected.
  • an air conditioner in which a plurality of indoor units are connected to one outdoor unit all the indoor units rarely start operating at the same time, and usually each indoor unit starts operating at a different time. do. Therefore, in the air conditioner (210) constituting the air conditioner (200) of the present embodiment, one indoor unit (212a to 212d) that has started operating is Refrigerant can be supplied.
  • the air conditioner (200) of the air conditioning system (50) of the present embodiment may be composed of a plurality of air conditioners (210).
  • each air conditioner (210) that constitutes the air conditioner (200) may be a multi-type air conditioner that includes one outdoor unit and a plurality of indoor units. It may be a pair type air conditioner provided with one each.
  • the rated cooling capacity of the pair-type air conditioner is the standard rated condition T1 (indoor intake air temperature: dry bulb temperature 27 ° C, wet bulb temperature 19 °C, outdoor intake air temperature: dry bulb temperature 35 °C, wet bulb temperature 24 °C).
  • the cooling capacity of a pair-type air conditioner is measured by a test based on "5.1 Cooling capacity test" of "JIS B 8615-1:2013".
  • the rated heating capacity of the pair type air conditioner is based on the standard test conditions listed in Table 6 of the Japanese Industrial Standard "JIS B 8615-1: 2013" (indoor intake air temperature: dry bulb temperature 20 ° C, wet bulb temperature 15 ° C , outdoor intake air temperature: dry-bulb temperature 7°C, wet-bulb temperature 6°C).
  • the heating capacity of a pair-type air conditioner is measured by a test based on "6.1 Heating capacity test" of "JIS B 8615-1:2013".
  • the air conditioner (200) of the air conditioning system (50) is composed of a plurality of air conditioners (210).
  • the rated cooling capacity of the air conditioner (200) is the sum of the rated cooling capacities of the plurality of air conditioners forming the air conditioner (200).
  • the rated heating capacity of the air conditioner (200) is the sum of the rated heating capacities of the plurality of air conditioners forming the air conditioner (200).
  • the rated cooling capacity per unit floor area of the air conditioner (200) is defined as “total rated cooling capacity of each of the plurality of air conditioners that make up the air conditioner (200)". Calculated by dividing by the total floor area of each of the multiple rooms (2a to 2d) in the house (1) where (200) is installed. Also, the rated heating capacity per unit floor area of the air conditioner (200) is defined as “the rated heating capacity of each of the plurality of air conditioners (210) that make up the air conditioner (200)” is changed to "the air conditioner (200) ) is installed, divided by the total floor area of each of the multiple rooms (2a to 2d) in the house (1).
  • the air conditioning system (50) of Embodiment 2 is the air conditioning system (50) of Embodiment 1 with the air conditioner (200) changed.
  • the air conditioner (200) of the present embodiment mainly different points from the first embodiment will be described.
  • the air conditioner (200) of the present embodiment includes one air processing unit (220) instead of four indoor units (212a to 212d).
  • the air handling unit (220) corresponds to the body unit of the present disclosure.
  • the air processing unit (220) is connected to the outdoor unit (211) via a liquid side connecting pipe (215) and a gas side connecting pipe (216).
  • a vapor compression refrigeration cycle is performed by circulating refrigerant between the air processing unit (220) and the outdoor unit (211).
  • the air treatment unit (220) is installed in the facility room (4) inside the house (1).
  • a suction duct (225) and a blowout duct (226) are connected to the air processing unit (220).
  • the air processing unit (220) cools or heats the indoor air sucked from the intake duct (225) and sends the cooled or heated indoor air to the blowout duct (226) as conditioned air.
  • the air conditioner (200) of this embodiment includes four blowout units (221a to 221d).
  • the number of blowout units (221a to 221d) included in the air conditioner (200) is merely an example.
  • the first blowout unit (221a) is in the first room (2a)
  • the second blowout unit (221b) is in the second room (2b)
  • the third blowout unit (221c) is in the third room (2c)
  • the fourth The blow-out units (221d) are arranged in the fourth rooms (2d), respectively.
  • Each blowout unit (221a-221d) is attached to the lower surface of the ceiling panel (7).
  • An outflow end of a blowout duct (226) is connected to each blowout unit (221a-221d).
  • Each blowout unit (221a to 221d) blows out the conditioned air sent from the blowout duct (226) into the indoor space (5).
  • the first blowout unit (221a) blows conditioned air into the first living room (2a).
  • the second blowout unit (221b) blows out the conditioned air to the second living room (2b).
  • the third blowout unit (221c) blows out the conditioned air to the third living room (2c).
  • the fourth blowout unit (221d) blows out conditioned air to the fourth living room (2d).
  • Each blowout unit (221a to 221d) is configured to be able to adjust the flow rate of the conditioned air blown out to the indoor space (5). Therefore, in the air conditioner (200) of the present embodiment, the flow rate of conditioned air supplied from the air processing unit (220) to the living rooms (2a to 2d) can be individually adjusted for each living room (2a to 2d). be.
  • the air conditioner (200) performs a cooling operation for cooling the indoor space (5) and a heating operation for heating the indoor space (5).
  • the air processing unit (220) cools the indoor air sucked from the indoor space (5) and blows out the cooled indoor air as conditioned air to the blowout duct (226).
  • the conditioned air flowing through the blowout duct (226) is distributed to four blowout units (221a-221d), and blown out from each blowout unit (221a-221d) into the indoor space (5).
  • the air processing unit (220) processes the sensible heat load and the latent heat load of the indoor space (5).
  • the evaporation temperature of the refrigerant in the air processing unit (220) may be set to be equal to or higher than the dew point of the indoor air, and only the indoor air may be cooled in the air processing unit (220). .
  • the air handling unit (220) of the air conditioner (210) only handles the sensible heat load of the indoor space (5).
  • the air processing unit (220) heats indoor air sucked from the indoor space (5) and blows out the heated indoor air as conditioned air to the blowout duct (226).
  • the conditioned air flowing through the blowout duct (226) is distributed to four blowout units (221a-221d), and blown out from each blowout unit (221a-221d) into the indoor space (5).
  • the air processing unit (220) processes the sensible heat load of the indoor space (5).
  • each blowout unit (221a-221d) the amount of conditioned air blown out to the corresponding living room (2a-2d) is set individually for each of the cooling operation and the heating operation.
  • the air conditioner (200) of the present embodiment all four blowing units (221a to 221d) blow out conditioned air, and some of the four blowing units (221a to 221d) blow out conditioned air. and the rest do not blow conditioned air. Therefore, the air conditioner (200) of the present embodiment individually switches between execution and stop of air conditioning in a plurality of living rooms (2a to 2d) provided in the house (1) for each living room (2a to 2d). be able to.
  • the air conditioning apparatus (200) of this embodiment has a rated cooling capacity per unit floor area of 110 W/m 2 or less.
  • the rated heating capacity is 138 W/m 2 or less.
  • the air conditioner (210) of this embodiment is a duct-connected air conditioner.
  • the rated cooling capacity of the duct-connected air conditioner is the standard rated condition T1 (indoor intake air temperature: dry bulb temperature 27°C, wet bulb temperature 19°C, outdoor intake air temperature: dry bulb temperature 35°C, wet bulb temperature 24°C).
  • the cooling capacity of a duct-connected air conditioner is measured by a test based on "6.1 Cooling capacity test" of "JIS B 8615-2:2015".
  • the rated heating capacity of the duct-connected air conditioner is based on the standard test conditions H1 (indoor intake air temperature: dry bulb temperature 20°C, wet bulb temperature 15°C, outdoor intake air temperature: dry bulb temperature 7°C, wet bulb temperature 6°C).
  • the heating capacity of a duct-connected air conditioner is measured by a test based on "7.1 Heating capacity test" of "JIS B 8615-2:2015”.
  • the air conditioner (200) is composed of one air conditioner (210). Therefore, the rated cooling capacity and rated heating capacity of the air conditioner (200) are respectively the rated cooling capacity and rated heating capacity of one air conditioner (210) that constitutes the air conditioner (200).
  • the air conditioning system (50) of Embodiment 3 is the air conditioning system (50) of Embodiment 1 with the air conditioner (200) changed.
  • the air conditioner (200) of the present embodiment mainly different points from the first embodiment will be described.
  • the air conditioner (200) of the present embodiment includes a first indoor unit (212a) and a second indoor unit (212b).
  • the third indoor unit (212c) and the fourth indoor unit (212d) are omitted.
  • Each of the first indoor unit (212a) and the second indoor unit (212b) of the present embodiment is a duct-connected indoor unit.
  • Each of the first indoor unit (212a) and the second indoor unit (212b) of the present embodiment corresponds to the main unit of the present disclosure.
  • the first indoor unit (212a) is installed in the ceiling space (8) on the first floor of the house (1).
  • the first indoor unit (212a) is provided in the middle of the air supply duct (D3) connected to the first ventilation unit (11a).
  • the second indoor unit (212b) is installed in the ceiling space (8) on the second floor of the house (1).
  • the second indoor unit (212b) is provided in the middle of the air supply duct (D3) connected to the second ventilation unit (11b).
  • Each of the first indoor unit (212a) and the second indoor unit (212b) is installed to cover the air conditioning opening (7b) formed in the ceiling panel (7).
  • the first indoor unit (212a) sucks indoor air from the non-living room (3a) on the first floor through the air conditioning opening (7b).
  • the second indoor unit (212b) sucks indoor air from the non-living room (3b) on the second floor through the air conditioning opening (7b).
  • Each of the first indoor unit (212a) and the second indoor unit (212b) is connected to one outdoor unit (211) via a liquid side connecting pipe (215) and a gas side connecting pipe (216). be.
  • refrigerant circulates between each of the first indoor unit (212a) and the second indoor unit (212b) and the outdoor unit (211). is done.
  • the air conditioner (200) performs a cooling operation for cooling the indoor space (5) and a heating operation for heating the indoor space (5).
  • the first indoor unit (212a) cools the indoor air sucked from the non-living room (3a) on the first floor
  • the second indoor unit (212b) cools the non-living room on the second floor. Cooling the indoor air sucked from (3b).
  • the first indoor unit (212a) heats the indoor air sucked from the non-living room (3a) on the first floor
  • the second indoor unit (212b) heats the non-living room on the second floor. Heat the indoor air drawn in from (3b).
  • the first indoor unit (212a) mixes the conditioned air, which is cooled or heated indoor air, with the supplied air (outdoor air) sent from the first ventilation unit (11a) to mix the conditioned air and the supplied air. Blow out air. Mixed air blown out from the first indoor unit (212a) flows through the air supply duct (D3) and is distributed to the first air supply unit (30a) and the second air supply unit (30b).
  • the second indoor unit (212b) mixes the conditioned air, which is cooled or heated indoor air, with the supply air (outdoor air) sent from the second ventilation unit (11b) to mix the conditioned air and the supply air. Blow out air. Mixed air blown out from the second indoor unit (212b) flows through the air supply duct (D3) and is distributed to the third air supply unit (30c) and the fourth air supply unit (30d).
  • the air conditioning apparatus (200) of this embodiment has a rated cooling capacity per unit floor area of 110 W/m 2 or less.
  • the rated heating capacity is 138 W/m 2 or less.
  • the air conditioner (200) is composed of one air conditioner (210). Therefore, the rated cooling capacity and rated heating capacity of the air conditioner (200) are respectively the rated cooling capacity and rated heating capacity of one air conditioner (210) that constitutes the air conditioner (200).
  • Embodiment 3 In the air conditioning system (50) of this embodiment, both the supplied air blown out by the ventilation units (11a, 11b) and the conditioned air generated in the indoor units (212a, 212b) are , is supplied to the rooms (2a-2d) through the air supply duct (D3). Therefore, compared to installing air supply ducts for ventilation units (11a, 11b) and indoor units (212a, 212b) separately, the number of ducts installed in the house (1) is can be reduced, and the man-hours and costs required for installing the air conditioning system (50) in the house (1) can be reduced.
  • a plurality of ventilation units (11a, 11b) may be connected to one heat source unit (80).
  • the first ventilation unit (11a) and the second ventilation unit (11b) are connected to the first communication pipe (86) and the second communication pipe ( 87) to one heat source unit (80).
  • a refrigerant circuit (R) is configured by two ventilation units (11a, 11b), one heat source unit (80), and communication pipes (86, 87) connecting them.
  • the first ventilation unit (11a) and the second ventilation unit (11b) are connected in parallel with each other.
  • the space for installing the heat source unit (80) can be minimized. can be done.
  • the ventilator (10) can be configured using one heat source unit (80), the cost of the ventilator (10) can be kept low.
  • the ventilation units (11a, 11b) of each of the embodiments described above may include a sensible heat exchanger instead of the total heat exchanger (21).
  • a sensible heat exchanger allows only sensible heat to be exchanged between outdoor and indoor air.
  • one air supply duct (D3) may be provided for each air supply unit (30a to 30d).
  • the first ventilation unit (11a) includes an air supply duct (D3) corresponding to the first air supply unit (30a) and an air supply duct (D3) corresponding to the second air supply unit (30b). is connected.
  • the second ventilation unit (11b) has an air supply duct (D3) corresponding to the third air supply unit (30c) and an air supply duct (D3) corresponding to the fourth air supply unit (30d). Connected.
  • the present disclosure is useful for air conditioning systems.
  • Air conditioning system 200 Air conditioning device 211 Outdoor unit 212a First indoor unit 212b Second indoor unit 220 Air processing unit (main unit) 221a First blowout unit 221b Second blowout unit

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Central Air Conditioning (AREA)

Abstract

La présente invention concerne un système de climatisation (50) comprenant un climatiseur (200) et un ventilateur (10). Le ventilateur (10) fournit en permanence de l'air extérieur et évacue l'air intérieur. Le ventilateur (10) est équipé d'un premier échangeur de chaleur (21) et d'un circuit de fluide frigorigène. Le premier échangeur de chaleur (21) échange la chaleur de l'air fourni avec de l'air évacué. Le circuit de fluide frigorigène est équipé d'un second échangeur de chaleur (25) qui échange la chaleur de l'air fourni avec le fluide frigorigène, et effectue un cycle de réfrigération. Le climatiseur (200) présente une capacité de refroidissement nominale par unité de surface inférieure ou égale à 110 W/m2 et une capacité de chauffage nominale par unité de surface inférieure ou égale à 138 W/m2.
PCT/JP2022/023037 2021-06-29 2022-06-08 Système de climatisation WO2023276588A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010032099A (ja) * 2008-07-28 2010-02-12 Kyoritsu Air Tech Inc 換気システム
JP2011163576A (ja) * 2010-02-04 2011-08-25 Toenec Corp 空気調和システムにおける全熱交換器及び周辺設備の異常検知装置
WO2015173895A1 (fr) * 2014-05-13 2015-11-19 三菱電機株式会社 Système de conditionnement d'air
JP3208689U (ja) * 2016-11-17 2017-02-02 株式会社晃栄住宅 高断熱高気密住宅の換気及び空調構造

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010032099A (ja) * 2008-07-28 2010-02-12 Kyoritsu Air Tech Inc 換気システム
JP2011163576A (ja) * 2010-02-04 2011-08-25 Toenec Corp 空気調和システムにおける全熱交換器及び周辺設備の異常検知装置
WO2015173895A1 (fr) * 2014-05-13 2015-11-19 三菱電機株式会社 Système de conditionnement d'air
JP3208689U (ja) * 2016-11-17 2017-02-02 株式会社晃栄住宅 高断熱高気密住宅の換気及び空調構造

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