WO2023100747A1 - Système de climatisation et de ventilation - Google Patents

Système de climatisation et de ventilation Download PDF

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Publication number
WO2023100747A1
WO2023100747A1 PCT/JP2022/043435 JP2022043435W WO2023100747A1 WO 2023100747 A1 WO2023100747 A1 WO 2023100747A1 JP 2022043435 W JP2022043435 W JP 2022043435W WO 2023100747 A1 WO2023100747 A1 WO 2023100747A1
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Prior art keywords
air
conditioning
unit
temperature
duct
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PCT/JP2022/043435
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English (en)
Japanese (ja)
Inventor
和朗 廣石
充則 松原
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株式会社Ｆｈアライアンス
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Publication of WO2023100747A1 publication Critical patent/WO2023100747A1/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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • 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
    • F24F3/12—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 characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—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 characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages

Definitions

  • the present invention relates to an air-conditioning and ventilation system that air-conditions and ventilates the entire building.
  • the temperature gradient inside the ventilation passage is large, and due to the temperature difference, condensation easily occurs inside and outside the ventilation passage, and there are multiple outlets in the ventilation passage.
  • the temperature distribution in the building becomes uneven depending on the position of the air outlet, such as the air outlet close to the air conditioner has high capacity, but the air outlet far away has low capacity.
  • the inside of such a ventilation passage has all the conditions for mold growth, such as "temperature around 5 to 40°C", "adhered moisture due to high humidity of 60% or more", and "adhered nutrients such as dust and dirt".
  • condensation for example, in cooling operation, cold blown air when the compressor of the air conditioner is running and the thermostat is ON passes through the ventilation passage, so the inner surface of the ventilation passage is cooled, for example, 10 ° C.
  • the thermostat is turned off, the compressor stops, and the indoor air is sucked in, and the blown out air, which contains condensed water condensed on the evaporator and becomes highly humid at the indoor air temperature, flows into the ventilation passage. If the temperature and humidity of the air are 25° C. and 80% (dew point temperature of 21° C.), condensation will form on the inner surface of the ventilation passage.
  • the temperature and humidity of that space are close to the outside air temperature in summer. % (dew point temperature 18.4° C.), cold blown air passes through the inside of the ventilation passage due to cooling operation, and when the temperature of the outside surface of the ventilation passage falls below the dew point temperature, dew condensation occurs on the outside surface of the ventilation passage.
  • the temperature of the space is close to the outside air temperature, for example, the outside temperature is 0°C and the space temperature is 2°C. A temperature and humidity of 50° C.
  • the ventilation passages such as the underfloor space
  • the ventilation passages usually need to be airtight, there are often no inspection openings, and it is necessary to remove the surrounding floorboards.
  • cleaning the inside of the ventilation passage may not be possible due to the shape and structure of the ventilation passage. are difficult to remove, and dust, mites, mold, etc. adhere to them and may not be removed. Therefore, even if the ventilation passage can be cleaned, it takes much time and cost.
  • a space is secured to facilitate maintenance and cleaning of the inside of the ventilation passage, the living space will be greatly reduced.
  • the air-conveying type air conditioning system for each room consists of a space above the ceiling with an airtight chamber structure, multiple air outlets that communicate with the space above the ceiling and the inside of the room, and air outlets that communicate with the space above the ceiling.
  • a box-shaped main body having an indoor air inlet, a blower provided in the main body so as to draw air from the indoor air inlet and blow out from the ceiling air outlet, and a cooling heat exchanger provided in the ventilation path formed by the air blower.
  • a heat exchanger for heating is provided, and the heat exchanger for cooling and the heat exchanger for heating are arranged side by side on almost the same plane so as to divide the ventilation path into two, and the heating is performed for reheating.
  • Room air is directly sucked into the heat exchanger for indoor use, and the latent heat capacity is increased by flowing a small amount of air.
  • an air conditioner that can perform air conditioning by conveying air into each room without condensation even if the back itself is narrow (see, for example, Patent Document 1).
  • the space above the ceiling between the ceiling of the living room on the first floor and the floor surface of the living room on the second floor is used as an air supply route, and multiple air conditioners are installed in the space above the ceiling, which is the air supply route.
  • a plurality of air outlets are provided on the ceiling of the living room on the first floor, and a plurality of air outlets are provided on the floor of the living room on the second floor.
  • a whole-building air-conditioning system is known that is provided with a booster fan that can be turned off and rotated, has both air-conditioning and ventilation functions, is easy to install, and does not require duct maintenance (see, for example, Patent Document 2).
  • the staircase air conditioning unit includes an air conditioner and an air outlet as an air outlet for the air conditioner. It is known that the cooling and heating air blown out from the cooling and heating machine of the air conditioning unit and the outdoor air from the heat exchanger enter the ceiling pocket of the floor of the building and are blown out from the ceiling of the first floor and the floor of the second floor to perform air conditioning and ventilation. (See, for example, Patent Document 3).
  • a paint film containing charcoal powder is formed on the inner surface of the duct, and the duct connects the air intake and air outlet with the air blower. It is known that a house ventilation system is constructed to suppress the generation of mold and bad odors in ducts due to charcoal powder, and to provide a comfortable living environment by removing odors contained in the air. (See Patent Document 4, for example).
  • JP-A-11-237079 JP 2020-94724 A Japanese Patent Application No. 2018-123498 JP-A-2001-248886
  • the present invention is intended to solve such conventional problems, and is a system using highly versatile equipment that supports various floor plans, shapes, etc. It prevents condensation inside the air-conditioning air duct, prevents the accumulation of dust inside the air duct, suppresses the growth of mold, etc., and responds to load changes such as outside temperature to air-condition rooms and spaces.
  • it can operate 24 hours a day to maintain a stable condition while suppressing dew condensation in the air duct.
  • the purpose is to provide an air-conditioning and ventilation system that stably realizes an energy-saving, comfortable, and healthy space through automatic control by utilizing controllers and sensors to prevent dew condensation at the same time. Further, it is desirable to provide an air-conditioning and ventilation system that does not require maintenance such as cleaning of the air-conditioning air duct, and prevents dust, mold, odors, and other harmful substances from adhering or accumulating in the air-conditioning air-flow duct even after long-term continuous operation. purpose.
  • the air-conditioning and ventilation system of the present invention provides air outlets in rooms and spaces in a highly airtight and highly insulated building, and air conditioning units provided in the building and the air outlets are connected by an air-conditioning air duct. At least one of the room, the space, and a heat insulating material is provided between the air-conditioning duct and the outer skin of the building around the air-conditioning duct. , the air-conditioning unit produces cleaned conditioned air, the cleaned conditioned air flows from the air-conditioning unit to the air outlet, and returns to the air-conditioning unit from the room and the space in which the air outlet is provided.
  • An air passage is used as a circulation passage, and a suction section, an air conditioning section, and a blow section are provided in order from upstream to downstream of the circulation passage in the air conditioning unit, and the suction section, the air conditioning section, and the
  • the blowing section is provided with a filter section A, a filter section B, and a filter section C, respectively.
  • Air-conditioned and cleaned by the part B the temperature of the air around the air-conditioned air passage is within 5K during cooling and within 10K during heating. While further purifying the conditioned air, the cleaned conditioned air is blown into the conditioned air passage toward the outlet, so that the room and the space are conditioned and air-conditioned through the circulation passage.
  • An outdoor air introduction passage is provided for introducing outdoor air from the outdoor into the circulation passage or the air conditioning unit, and an introduction fan and a filter are provided in the outdoor air introduction passage to clean the introduced outdoor air and circulate it.
  • An indoor air discharge path is provided for discharging the air in the building to the outside from at least one of the room without the air outlet, or the space without the air outlet, and the air is discharged to the indoor air discharge path.
  • a fan is provided to exhaust at least one of a part of the air in the circulation path and a part of the air stagnating in the building to the outside.
  • the temperature of the air around the air-conditioning blast path produced by the air-conditioning unit provided with the suction part, the air-conditioning part, and the blowing part is within 5K during cooling and within 10K during heating.
  • air-conditioning air duct By blowing air into the air-conditioning air duct, air is blown out from the outlets of the rooms and spaces, and the rooms and upper and lower spaces in the highly airtight and highly insulated building are air-conditioned. , the inside of the building tends to have a comfortable and uniform temperature and humidity.
  • the air-conditioning duct is surrounded by an air-conditioned room, space, or heat insulating material, dew condensation inside and outside the air-conditioning duct during cooling and inside the air-conditioning duct during heating is unlikely to occur.
  • the return air filter (filter section A) provided in the intake section of the air conditioning unit that produces conditioned air cleans all of the air that is sucked into the air conditioning unit.
  • (Filter section B) further purifies, and with the blow section filters (filter section C) of a plurality of blow sections, all of the air sucked into the air conditioning unit is cleaned without omission, flowed into the air conditioning blow path, and the air inside the building It purifies the air, further reduces the risk of dust, which is one of the breeding conditions for mold, entering the air conditioning duct, and since all the filter parts A, B, and C are inside the air conditioning unit, it is easy to clean. An easy-to-maintain air-conditioning and ventilation system is obtained.
  • an introduction fan and a filter in the outdoor air introduction path, the outdoor air to be introduced is cleaned, and from the indoor air discharge path leading to the outside from the so-called dirty zone (toilet, washroom, etc.) without an air outlet, An exhaust fan exhausts part of the air that has conditioned the room and space and the air in the dirty zone to the outside, introducing clean outdoor air and exhausting the air inside the building that is contaminated with dust and moisture. It is possible to obtain an air-conditioning and ventilation system capable of ventilating the inside of a building.
  • the air in the bathrooms and kitchens, etc. which generate moisture from bathing and cooking in the building, is provided with an exhaust fan that exhausts it to the outside of the building so that the moisture stays in the building. Since the moisture is not included in the conditioned air, the moisture does not flow into the conditioned air passage. As a result, dust, moisture, condensed water, etc., do not accumulate or accumulate in the air-conditioning air duct, preventing the growth of mold and odors caused by various bacteria. It is difficult for bacteria and odors to enter, and a healthy and comfortable space can be realized.
  • Another means is to further provide a mixing section between the air conditioning section and the plurality of air blowing sections in the air conditioning unit so that the air blown out from the air conditioning section and the air sucked in from the suction section are mixed.
  • a part of the remainder is mixed by the plurality of blowing units in the mixing unit upstream of the filter unit C to produce the cleaned conditioned air, and the total air volume of the plurality of blowing units is the above It is assumed that the air volume of the air blower is greater than the air volume of the air conditioning unit and is not zero. With this means, part of the air sucked from the intake section is sucked into the air conditioning unit, air-conditioned, and blown out by the air blowing section of the air conditioning unit. A part of the air sucked from the suction part is not sucked into the air conditioning part, but joins and mixes with the air blown from the air conditioning part in the mixing part, and the air volume of the air conditioning part, the set temperature, the air volume of the blowing part, etc.
  • the air-conditioning air blower is much larger than the air volume of the air conditioning unit, and the temperature of the room and space is within 5K during cooling and within 10K during heating. It can be produced stably, and the temperature of the room and space does not fluctuate significantly, such as overshooting, and it is stable for a long time.
  • thermo ON state continues for a long time with a small temperature difference, and the compressor continues to operate at a low frequency.
  • the moisture in the intake air condenses on the evaporator, the amount of dehumidification removed increases due to long-term operation, the absolute humidity of the blown air continues for a long time, and the absolute humidity of the conditioned air also decreases.
  • the relative humidity in the air-conditioning air duct, the room, and the space through which the conditioned air flows is also reduced, and an air-conditioning/ventilating system in which dew condensation is less likely to occur in the air-conditioning air-conditioning air duct during cooling operation can be obtained.
  • the air volume of the air blower is not zero, and the specification is such that the conditioned air always flows, so even if dew condensation occurs in the air conditioned air passage, it can be evaporated as quickly as possible. Furthermore, by driving the compressor or the like of the air conditioning unit, the air volume of the air blowing unit whose running cost per unit air volume is significantly lower than the air volume of the air conditioning unit whose running cost per unit air volume is high is increased. It is energy-saving because it is a system that creates air-conditioning air ducts. Another means is to directly connect the air blower and the air-conditioning air passage, directly connect the air-conditioning air passage and the outlet, and provide the air-conditioning air passage between the upper floor and the lower floor of the building. This is what I did.
  • the air-conditioning duct through which the conditioned air flows is inevitably divided structurally in a two-story house or more, and is provided between the existing first and second floors, and the surface area of the conditioned air duct is Since the upper and lower surfaces, which account for most of the space, are surrounded by air-conditioned rooms and spaces, there is no need to enclose them with heat insulating materials. Furthermore, it is possible to obtain a highly efficient air-conditioning and ventilation system in which heat loss is less likely to occur and heat loss from the air-conditioning air inlet of the air-conditioning air passage to the air outlet is small.
  • an air conditioning unit is provided on the upper floor between floors, directly connected to the air conditioning ventilation passage provided between floors, and an air outlet is provided in the part connected to the floor above the air conditioning ventilation passage, and below the air conditioning ventilation passage Air outlets are also provided in the part that connects to the ceiling of the floor, and the conditioned air is blown out from the floor of the upper floor and the ceiling of the lower floor to the room or space for air conditioning, so the air path from the air conditioning unit to the air outlet is the shortest. It is possible to obtain an air-conditioning/ventilation system that is substantially straight in a distance, has little pressure loss along the way, has little heat loss, and has a construction-saving and rational structure.
  • Another means is to have a reheat dehumidifying function in the air conditioning unit.
  • one heat exchanger functions as an evaporator through which low-temperature and low-pressure refrigerant flows
  • the other heat exchanger functions as a reheater through which medium-temperature and medium-pressure refrigerant flows.
  • the blown air has a low absolute humidity.
  • the surface temperature of the evaporator, the so-called evaporation temperature falls below the dew point temperature of the intake air, and moisture in the intake air condenses on the evaporator.
  • the absolute humidity of the air decreases, the absolute humidity of the conditioned air also decreases, and the relative humidity of the air-conditioned air passages, rooms, and spaces in which the conditioned air flows also decreases.
  • An air-conditioning and ventilation system that is less likely to condense on roads can be obtained.
  • Another means is to provide an air purifier of HEPA filter type or electrostatic precipitator type in the circulation path or the air conditioning unit.
  • a HEPA filter type or electric dust collection type air purifier is installed in the circulation path or air conditioning unit to remove mold spore level particles contained in the air conditioning air, so that mold grows more in the air conditioning ventilation path through which the air conditioning air passes.
  • This provides an air-conditioning/ventilation system that is difficult to clean and mold, bacteria, and offensive odors in the air-conditioning air duct do not easily enter the building, and that can realize a healthy and comfortable space.
  • another means has a temperature sensor for detecting the temperature of the room or the space, a temperature setting section for setting the temperature, a temperature sensor for detecting the temperature of the mixing section, and the two It has a control unit for controlling the air conditioning unit and the blower unit based on the detected value of the temperature sensor and the set temperature of the temperature setting unit.
  • the average temperature of the air in the air conditioning duct can be set by the user, and dew condensation inside and outside the air conditioning duct can be suppressed. It is possible to obtain an air-conditioning and ventilation system in which mold and the like are less likely to propagate.
  • Another means is to have at least one of a polypropylene film, a soft vinyl chloride film, and a PET film on the surface inside the air-conditioning air passage through which the air-conditioning air flows.
  • the inside of a highly airtight and highly insulated building is air-conditioned so that the temperature and humidity are uniform, fresh and clean outdoor air is introduced, dirty indoor air containing moisture is exhausted, and the air in the building is cleaned.
  • Air-conditioning and ventilation systems that are resistant to mold, prevent the growth of mold, prevent the generation of odors caused by bacteria, and prevent the influx of dust, mold, bacteria, and odors from the air-conditioning ventilation ducts into buildings. can provide.
  • an air-conditioning and ventilation system that can maintain healthy and comfortable air-conditioning and ventilation in a building without requiring maintenance such as cleaning of the air-conditioning air duct or renovation during long-term use, even if used for a long period of time.
  • air-tight and heat-insulated spaces such as between floors, under the floor, and above the ceiling, which are inevitably partitioned in ordinary buildings, are used as air-conditioning ventilation channels, and air outlets are installed there, so it is necessary to route air-conditioning ducts inside the building. It is possible to provide a rational air-conditioning and ventilation system that does not require any construction work, and has little pressure loss in the air passage from the air-conditioning unit to the outlet.
  • an air-conditioning/ventilation system capable of setting the temperature of a room or space according to the user's preference and automatically matching the set temperature while preventing dew condensation inside and outside the air-conditioning air duct. Furthermore, it is possible to provide an air-conditioning/ventilation system that reduces noise such as crosstalk between the first and second floors, and uniformizes the temperature between rooms and between spaces, and the temperature within a room and space.
  • an air-conditioning/ventilation system instead of using ducts, spaces between floors that normally exist in a building are used as air conditioning air passages, and heat exchange air systems are installed between floors, etc., so there is no need for space to accommodate ducts or heat exchange air systems.
  • a space-saving air-conditioning and ventilation system can be provided.
  • Embodiment 1 is a configuration diagram of an air-conditioning ventilation system according to Embodiment 1 of the present invention.
  • Longitudinal cross-sectional view of the air conditioning unit of the same system 1 Longitudinal cross-sectional view of the air conditioning unit of the same system 2
  • Longitudinal cross-sectional view of the air conditioning unit of the system Control block diagram of the same system Longitudinal cross-sectional view of the air conditioning air passage of the same system in Embodiment 2 of the present invention
  • FIG. 1 is a configuration diagram of an air conditioning ventilation system 1 according to Embodiment 1 of the present invention.
  • the air-conditioning/ventilation system 1 is installed in a building 2 which is a highly airtight and highly insulated house. All the rooms and spaces in the building 2 are air-conditioned and ventilated through the air.
  • the room refers to a living room
  • the space refers to a non-living room.
  • the term refers to a room
  • a non-residential room refers to a non-residential room.
  • the building 2 consists of an outer skin (a structure of the outer peripheral part of the building, such as an outer wall of the building, a roof, a floor that is in contact with the outside air, windows, etc.) with a heat insulating material (not shown) and an airtight sheet (not shown).
  • the ceiling 3 on the second floor is a ceiling insulation specification covered with a heat insulating material 4
  • the floor 5 on the first floor is a floor insulation specification covered with a heat insulating material 6
  • the windows are triple glass resin sashes.
  • the heat insulating sash 7, the door is a heat insulating door (not shown), and the entire room and space in the building 2 except for the attic space 9 from the ceiling 3 to the roof 8 and the underfloor space 12 from the floor 5 to the foundation 11 is an insulated space.
  • Heat insulation methods can be broadly divided into external heat insulation and internal heat insulation, and each method can be adopted according to its merits/disadvantages.
  • the object is building 2. Regarding the airtight performance, although it depends on the specifications of the airtight sheet, the continuity of the airtight layer is maintained by attaching airtight tape etc. to the joints of the airtight sheet, and building 2 clears at least the C value of 1.0. do.
  • an air-conditioning unit 10 which is an air-conditioned room with high airtightness and heat insulation, covered with a wall, a heat insulating material, and airtightly treated, is located between the entrance 13 and the entrance 13. It is provided in the second floor hall 15 at the top of the stairs 14 going up to the floor.
  • the air conditioning unit 10 is provided with a closed door (not shown) that allows entry and exit from the second-floor hall 15 by opening and closing, and that is highly airtight when closed.
  • the air conditioning unit 10 is installed in the hall 15 on the second floor, but it may be installed in a non-residential room such as a staircase 16 or a machine room (not shown).
  • An air conditioning unit 10 that generates conditioned air is provided with a plurality of air blowing units 17 and an air conditioning unit 20 that is connected to an air conditioning outdoor unit 18 installed outdoors by refrigerant pipes and electrical wiring 19 .
  • the air conditioning unit 20 has a heat exchanger (not shown) and an air blower (not shown), and the air blowing unit 17 has a fan (not shown) and a motor (not shown).
  • the air-conditioning unit 20 and the blower unit 17 are attached to the intermediate plate 21 of the air-conditioning unit 10, and behind them, there are a room or space to be air-conditioned, walls, covered with a heat insulating material, and airtightly treated.
  • the space between the ceiling 32 on the first floor and the floor 33 on the second floor is a so-called inter-floor space 34, which is covered with air-conditioned rooms and spaces above and below, and is covered with outer walls having heat insulating materials 4 on the front, back, left and right,
  • the air-conditioning air passage A30 and the air-conditioning air passage B31 are connected by a connecting portion 35 extending to the depth of the air-conditioning unit 10, and when a large amount of conditioned air flows from the air-conditioning air passage A30 to the air-conditioning air passage B31, the pressure loss is minimized.
  • the area of the connection part is enlarged so as not to receive it.
  • the inter-floor 34 consists of beams (not shown) fixed to pillars (not shown) and floor joists (not shown) above which the second-floor subfloor board (not shown) and the floor 33 are attached, and below It is a space created by pasting the ceiling base plate (not shown) on the first floor and the ceiling 32, and generally has a height of 300 to 400 mm.
  • the air-conditioning air duct B31 has an airtight sheet around the contact surface in order to increase the airtightness between the horizontally stretched underfloor board, the floor 33, the ceiling underboard, the ceiling 32 and the four outer walls and vertically stretched boards.
  • the outer wall in order to prevent insulation loss, it has an airtight insulation structure with heat insulation material.
  • the air-conditioning air passage B31 is open only at the connecting portion 35 and an air outlet for blowing the air-conditioned air to each room, which will be described later.
  • the ceiling 32 of the room A23, the floor 33 of the room B24, and the ceiling 32 of the entrance 13 in the building 2 are provided with air outlets 40, 41, and 42, respectively, so as to be connected to the air conditioning air passage B31.
  • 42 are air supply grilles for blowing out the conditioned air, the direction of which can be changed, and the outlets 40 and 41 have a fan (not shown) and a motor (not shown) on the side of the air conditioning air passage B31.
  • Blower fans 45 and 46 are provided. Further, in the blower fans 45 and 46, the performance of the blower fan is stabilized, the noise of the blower fan itself is reduced, the propagation of blowing sound from other parts of the blower unit 17, and the propagation of noise from other rooms and floors (crosstalk).
  • 1 m muffling ducts 47 and 48 are connected.
  • the length of the muffling ducts 47 and 48 may be adjusted according to the degree of noise.
  • Blower fans 45 and 46 and noise reduction ducts 47 and 48 are connected to the outlets 40 and 41.
  • the purpose of the fan is to increase the amount of air from the outlets 40 and 41, as will be described later. Since the purpose of the muffling duct is to stabilize the performance of the noise fan and to muffle the noise, the airflow path B31 and the outlets 40 and 41 are directly connected.
  • the noise reduction ducts 47 and 48 are connected to the blower fans 45 and 46. Noise propagation (crosstalk) from rooms and other floors can be prevented.
  • air outlets are provided in room A23 and room B24 as living rooms.
  • the outlet is provided at the entrance 13, the outlet may be provided in the second floor hall 15, under the stairs 16, attic space 9, underfloor space 12, machine room, corridor, storage room, closet, shoe cupboard, etc. .
  • the conditioned air blown out from the air outlet 22 of the air blower 17 passes from the air conditioned air passage A30, through the air conditioned air passage B31, through the air blowers 45 and 46, from the air outlets 40, 41 and 42 to the room A23 and the room A23. B24 blows out at entrance 13.
  • the air conditioning air duct B31 is installed at the air outlets on the floor and ceiling of those rooms and spaces. It is spread horizontally so as to be connected, and the entire building 2 is air-conditioned and ventilated.
  • the outlet on the ceiling 32 side of the first floor and the outlet on the floor 33 side of the second floor, which are connected to the air conditioning fan path B31 overlap each other with the air conditioning fan path B31 interposed therebetween when the building 2 is viewed from above, 1 Noise from the floor can be heard on the second floor, or vice versa (crosstalk) may increase, making it difficult to protect privacy.
  • Crosstalk noise can be reduced by providing an interval of 2 m or more. As an example, there was a difference of about 3 dB between the noise at 1 m directly below the outlet on the first floor and the noise at 1 m directly above the outlet on the second floor.
  • the air-conditioning duct A30 and the air-conditioning duct B31 are far from the outer skin of the building 2 and are surrounded by rooms, spaces, heat insulating materials, etc. It tends to be the same as the temperature of the room or space.
  • the air velocity in the air duct should be 5 to 7 m/s or less. Design and select so that there is enough pressure and power consumption and noise do not increase.
  • the air-conditioned air generated in the air-conditioning unit 10 is passed through the air-conditioning air passage A30 and the air-conditioning air passage B31 surrounded by rooms, spaces, heat insulating materials, etc. , 46, and air supply passages (thick arrows) blowing out from the air outlets 40, 41, 42 to the room A23, the room B24, and the entrance 13 are formed.
  • Exhaust ports 50 and 51 such as undercuts of doors (not shown) of room A 23 and room B 24 open between the entrance 13 and the hall 15 on the second floor.
  • a return air port 55 (intake part) such as an intake grille is provided at the top of a sealed door (not shown) on the second floor hall 15 side of the air conditioning unit 10, and all the air sucked into the air conditioning unit 10 is It is sucked from the return air port 55 (suction portion).
  • the air in the room A23 passes through the exhaust port 50, enters the entrance 13, passes through the stairs 14, and the air in the room B24 passes through the exhaust port 51, enters the second floor hall 15, and enters the return air port 55.
  • a return air path (thin arrow, including inside the air conditioning unit 10) returning to the air conditioning unit 10 is formed.
  • a circulation path (not shown, included in the air conditioning unit 10) is formed by connecting the supply air path and the return air path.
  • the outdoor air is introduced into the room to the left side of the air-conditioning air passage B31 in the inter-floor 34, where it is unlikely to affect the air supply passage, and when the indoor air is discharged to the outside, all the heat of the indoor air is transferred to the outdoor air.
  • a heat exchange air unit 60 is provided to recover the heat, and the entire building 2 is ventilated.
  • the heat exchange air unit 60 has a 24-hour ventilation air volume of 125 m 3 /h, a strong notch ventilation air volume of 250 m 3 /h, and a total heat exchange rate of about 70%.
  • the ceiling of the toilet 61 in the building 2 is provided with a ventilation exhaust port 62 such as an exhaust louver for exhausting the air in the toilet 61, and is connected to an exhaust duct (not shown) or directly to the heat exchange air unit 60. ing.
  • An outdoor exhaust hood A66 is provided in a through-hole in the outer wall of the building 2, and is connected to the heat exchange air unit 60 by an exhaust duct A65.
  • the heat exchange air unit 60 includes an introduction fan (not shown) for introducing outdoor air, an exhaust fan (not shown) for discharging indoor air, a motor (not shown), and a motor (not shown) for recovering all the heat of the indoor air to the outdoor air. and a pre-filter 64 for the element, which is arranged on the indoor air inlet side of the heat exchange element 63 to prevent dust and the like of the indoor air from adhering to the element.
  • the element prefilter 64 is a polyester or modacrylic non-woven fabric having a thickness of 10 mm to 20 mm, is used at a standard wind speed of 2.5 m/s, has an efficiency (weight method) of 75%, and can be recycled by washing.
  • An inspection opening is provided in the ceiling of the toilet 61 below the heat exchange air unit 60 to facilitate maintenance such as regular cleaning of the heat exchange element 63 and element pre-filter 64 .
  • the indoor air passes through the exhaust duct etc. from the ventilation exhaust port 62, recovers all the heat in the heat exchange air unit 60, passes through the exhaust duct A65, and is exhausted to the outside from the outdoor exhaust hood A66.
  • the indoor air discharge path is formed between the ventilation exhaust port 62 and the outdoor exhaust hood A66, and is formed by the heat exchange air unit 60 and the exhaust duct A65, such as an exhaust duct.
  • the element pre-filter 64 of the heat exchange unit 60 is provided in the indoor air discharge path, other filters may be provided in addition to the element pre-filter 64 or together with the element pre-filter 64 .
  • an exhaust fan (not shown) of the heat exchange unit 60 is provided in the indoor air discharge path, but other exhaust fans may be provided in addition to this exhaust fan or together with this exhaust fan.
  • An outdoor air supply hood 67 is provided in a through-hole in the outer wall of the building 2 and connected to the heat exchange air unit 60 by an air supply duct A68. In the middle of the air supply duct A68, between the floors 34, a filter box 70 having an outdoor air cleaning filter 69 for cleaning the outdoor air to be introduced is provided, and an inspection opening is provided in the ceiling of the toilet 61 below it.
  • the outside air cleaning filter 69 is a fine particle filter made of polyethylene terephthalate, polypropylene, or PP resin and having a thickness of 35 mm. It is a specification to exchange once every two years for collection efficiency.
  • a ventilation air supply port 71 for blowing outdoor air into the building 2 is provided, and is connected to the heat exchange air unit 60 with an air supply duct B72. It is As a result, the outdoor air is introduced from the outdoor air supply hood 67, passes through the air supply duct A68, is cleaned in the filter box 70, recovers all the heat in the heat exchange air unit 60, and passes through the air supply duct B72. , is introduced into the room from the ventilation air supply port 71 .
  • the outdoor air introduction path is formed between the outdoor air supply hood 67 and the ventilation air supply port 71, and is formed by the air supply duct A68, the filter box 70, the heat exchange air unit 60, and the air supply duct B72.
  • the outside air cleaning filter 69 of the filter box 70 is provided in the outdoor air introduction path, but other filters besides the outside air cleaning filter 69 or together with the outside air cleaning filter 69 may be provided.
  • the introduction fan of the heat exchange unit 60 is provided in the outdoor air introduction path, another introduction fan may be provided in addition to this introduction fan.
  • the inter-floor 34 when the ventilation outlet 62 and the heat exchange unit 60 are connected by an exhaust duct, the inter-floor 34 is covered with air-conditioned rooms and spaces above and below, and is covered with heat insulating materials on the front, back, left, and right. Because it is an insulated space, there is little possibility of condensation inside the duct, and in order to prevent dust and moisture from accumulating inside the duct and absorbing water, there is no heat insulating material or non-woven fabric inside the duct. Use non-insulated ducts.
  • the exhaust duct A65 and the air supply duct A68 are provided in the inter-floor 34 between the outdoor exhaust hood A66 or the outdoor air supply hood 67 and the heat exchange air unit 60, and are ducts in contact with the outdoor air, so there is a possibility of condensation. Since there is a possibility that dust and the like may enter from the outside, a flexible duct with high heat insulation and moisture resistance is used.
  • the structure of the duct consists of, from the outside, an external covering material (not shown) such as a flexible polyethylene sheet with a thickness of about 0.08 mm, and a heat insulating material such as glass wool with a thickness of 25 mm and a density of about 24 kg/m 3 .
  • the inner covering material (not shown) and the air passage (not shown) through which air, etc., pass. ) is provided so that even if the duct is bent, it will not buckle and the cross-sectional area of the internal air passage can be secured.
  • Polypropylene film is used instead of non-woven fabric as the inner covering material, because the surface roughness is small, so dust does not easily accumulate on the inner surface of the duct, and since it does not contain moisture, it is difficult for mold to grow.
  • the duct space may be secured by using glass wool or the like having a density of 100 kg/m 3 or more and a thickness of 10 mm or less.
  • the air supply duct B72 is an air supply duct provided between the floors 34 between the ventilation air supply port 71 and the heat exchange air unit 60, and is a duct through which the indoor air and the outdoor air after heat exchange pass. , moisture resistant and flexible ducts. Since the heat exchange air unit 60, the exhaust duct B65, and the air supply duct A68 are in contact with the outdoor air, there is a possibility of condensation and dust entering from the outdoor. It is necessary to provide an inspection opening nearby so that it can be cleaned easily and replaced after long-term use.
  • the building 2 has a ceiling heat insulation specification and a floor heat insulation specification, and the attic space 9 and the underfloor space 12 are non-insulated spaces.
  • the heat exchange air unit 60, the filter box 70, the exhaust duct B65, etc. are installed in the inter-floor 34, which is a heat insulating space and has a sufficient cross-sectional area as an air conditioning air duct.
  • An inspection opening is provided in the ceiling of the toilet 61 or the like, which is the lower part, so that periodic cleaning and replacement during long-term use can be easily performed.
  • the toilet 61 is not provided with an outlet for blowing out conditioned air, but is provided with a louver 75 through which the air flows in and out between the toilet 61 and the entrance 13 . Also, part of the air that has conditioned the room and space flows into the toilet 61 from the louver 75, and when the air is stable, the air quality (temperature, humidity, cleanliness, etc.) in the toilet 61 is close to that of the conditioned air.
  • the heat exchange air unit 60 By the operation of the heat exchange air unit 60, the fresh outdoor air cleaned by the outside air cleaning filter 69 provided in the outdoor air introduction path is introduced by the introduction fan of the heat exchange air unit 60, and the so-called dirty air such as the toilet 61 is introduced.
  • Air polluted with moisture in the zone and part of the air that has conditioned the room and space pass through the indoor air discharge path from the ventilation exhaust port 62 and are sent to the heat exchange air unit 60 by the exhaust fan of the heat exchange air unit 60. After the total heat is exchanged with the outdoor air by the heat exchange element 64, it is discharged to the outside. By heat exchange, the dust, moisture, mold spores, etc. in the building can be reduced while ventilating the building 2 in an energy-saving manner.
  • the toilet 61 is provided with the ventilation exhaust port 62 and the grille 75, but odors, moisture, harmful substances, etc. are generated and accumulated in places other than the toilet, such as washrooms, bathrooms, and kitchens.
  • a ventilation exhaust port 62 and a louver 75 may be provided in a so-called dirty zone, which is a room or space that is easy to clean.
  • the ventilation exhaust port 62 may be provided in a room or space downstream of the circulation path (return air path) such as the entrance 13, the second floor hall 15, the air conditioning unit 10, etc. In that case, the indoor air of the room or space may be A part of it is discharged outside the room or space together with the dust and moisture generated by normal life. It is necessary to provide a separate ventilation exhaust port for each, or a separate ventilation fan, which will be described later.
  • a ceiling-embedded ventilation fan 81 with a strong notch air volume of 80 m 3 /h is provided to exhaust the air in the bathroom 80, and the exhaust duct C82 penetrates the outer wall of the building 2. It is connected to an outdoor exhaust hood C83 provided in the hole. Since the ceiling of a unit-type bathroom is generally lower than the ceiling 3 of the second floor of the building 2, the ceiling-embedded ventilation fan 81 is installed in a heat insulating space.
  • the exhaust duct C82 is provided in a heat-insulating space between the outdoor exhaust hood C83 and the ceiling-embedded ventilation fan 81, and is a duct in contact with the outdoor air. and the same specifications as the air supply duct A68.
  • the bathroom 80 is not provided with an air outlet for blowing out conditioned air, but is provided with a louver 76 for air to flow in and out between the second floor hall 15, Part of the air that has conditioned the room and space that has returned to the floor hall 15 flows from the louver 76 into the bathroom 80, and when stable, the air quality (temperature, humidity, cleanliness, etc.) in the bathroom 80 is close to that of the conditioned air. ).
  • the ceiling-embedded ventilation fan 81 is provided in the bathroom 80.
  • places other than the bathroom such as a washroom, a toilet, a kitchen, etc.
  • Ventilation fans may be provided in rooms and spaces where odors, large amounts of moisture, harmful substances, etc. tend to be temporarily generated and accumulated, and these can be quickly exhausted directly to the outside.
  • the ceiling-mounted ventilation fan 81 is provided.
  • a heat exchange air unit that is resistant to deterioration due to moisture in bathrooms, oil in kitchens, etc. may be used.
  • the air conditioning unit 10 is provided with a plurality of filters 85 , 86 , 87 (filter sections A, B, C) for cleaning the air inside the building 2 .
  • filters 85 , 86 , 87 filter sections A, B, C
  • a return air port filter 85 filter Part A
  • dust and the like are removed from all of the sucked air at the most upstream of the air passage in the air conditioning unit 10 .
  • the air conditioning unit 20 is provided upstream of a heat exchanger (not shown) so as to purify the intake air, prevent dust from adhering to the heat exchanger, remove the dust, etc., and blow out the conditioned air.
  • An air conditioner filter 86 (filter section B) is provided.
  • the air blowing section 17 is provided upstream of the fan (not shown) to clean the sucked air, air conditioning air passage A30, air conditioning air passage B31, room A23 B24, the entrance 13, and the second floor hall 15 are provided with a blower section filter 87 (filter section C) so that dust and the like are not blown out. Both the air conditioning unit filter 86 and the blower unit filter 87 can be removed from the main body for maintenance such as periodic cleaning.
  • the three filters 85, 86, and 87 are filters that are suitable for collecting dust and the like, and have a good balance between collection efficiency and maintenance frequency.
  • the return air port filter 85 is a polyester or modacrylic nonwoven fabric with a thickness of 15 mm to 30 mm, is used at a standard wind speed of 1 m/s, has an efficiency (weight method) of 80% or more, and can be recycled by washing.
  • the air-conditioning unit filter 86 is a filter made by weaving polypropylene fibers in a honeycomb shape (honeycomb shape) and molded in a resin frame. is easy.
  • the blower filter 87 is a non-woven fabric made of polyester or the like having a thickness of 2 mm, is used at a standard wind speed of 2 m/s, has an efficiency (weight method) of 30%, a suitable pressure loss, and can be regenerated by washing. If it is desired to reduce the frequency of maintenance such as cleaning, a filter made of polypropylene fibers woven in a honeycomb shape may be formed in a resin frame, similar to the air conditioning unit filter 86, although the efficiency will be slightly reduced. is too low, and it affects the promotion of mixing of the conditioned air in the mixing section 95 upstream of the blower section filter 87 .
  • the most upstream return air port 55 (suction portion) of the air passage at the entrance of the air conditioning unit 10, the air conditioning unit 20 in the air conditioning unit 10, and the most downstream air blowing portion 17 of the air passage at the exit of the air conditioning unit 10 Filters A, B, and C are provided, respectively, because the main purpose of the filters is to remove dust, which is one of the breeding conditions for mold. Since three filter sections are arranged in series to achieve a proper balance between collection efficiency and maintenance frequency for collecting dust, etc., the filter sections become clogged early and the pressure loss increases. This is because the possibility is low, and dust and the like can be reliably collected while suppressing maintenance frequency.
  • filter sections are provided at the inlet and outlet of the air-conditioning unit 10, respectively, all the air passing through the air-conditioning unit 10 that produces the cleaned air is cleaned twice in one cycle, and one filter section and one housing are used. This is because even if dust or the like leaks due to gaps or the like, it is possible to reliably prevent dust or the like from flowing into the air-conditioning air passage. can be reliably prevented from flowing into the air-conditioning air duct.
  • the air cleaner 90 Downstream of the return air port 55 in the air conditioning unit 10 and between the air conditioning unit 20 and the air blowing unit 17, an electric dust collecting air cleaner 90 is provided.
  • the air cleaner 90 has a prefilter and an electric dust collector.
  • the pre-filter is a SUS filter with a coarse mesh of about 20 to 50 mesh located upstream of the electric dust collector. Coarse particles with a particle size of 10 to 20 ⁇ m or more are removed and passed through an electric dust collector.
  • the pre-filter may be made of resin such as polypropylene depending on the application.
  • An electric dust collector downstream of the pre-filter removes even finer particles with a particle size of 0.3 ⁇ m or more, such as airborne mold spores, dust, pollen, yellow sand, PM2.5, and other airborne particles.
  • an electric dust collector type air purifier 90 is provided. It may be selected according to the type and degree of dust, bacteria, harmful substances, etc. to be removed, the shape of the machine, the shape of the air conditioning unit 10, the air velocity in the air conditioning unit 10, the frequency of maintenance such as cleaning, and the like. For example, when targeting viruses with a particle size of 0.1 ⁇ m or more that can be captured by a HEPA filter, the HEPA filter type is used. The pre-filter and the electric dust collector can be easily cleaned and replaced by opening the sealed door of the air conditioning unit 10 .
  • the air purifier 90 is provided in the air conditioning unit 10 in this embodiment, it may be provided in the middle of the return air path returning to the air conditioning unit 10 from the room A23 or the like.
  • the blower section 17 in the air conditioning unit 10 is separated from the blower (not shown) of the air conditioning section 20, but the air conditioning blower function for exchanging heat with a heat exchanger (not shown) and each Any configuration of the blower unit 17 and the blower may be used as long as the conveying function of blowing air to the room or each space works effectively.
  • the air-conditioning unit 10 is a closed air-conditioning room covered with walls and heat insulating material, but it may be a compact housing covered with sheet metal or heat insulating material.
  • part of the space such as the second floor hall 15, the bottom of the stairs 14, and the corridor may be surrounded by a wall or the like, provided with the air conditioning unit 20, the blower unit 17, and the like, and may be a partially open space.
  • the air conditioning unit 20 and the air blowing unit 17 are large enough to facilitate maintenance.
  • an air conditioning unit controller 110 having a sensor and a control unit for detecting the temperature, humidity, and dust concentration of the air after passing through the air cleaner 90 is provided below the air cleaner 90 in the air conditioning unit 10.
  • a room temperature controller 120 having a temperature setting section for setting the temperature and a control section is provided.
  • the air conditioning unit controller 110 and the room temperature controller 120 are connected by signal lines for exchanging signals with the control section of the air conditioning section 20 and the control section of the blower section 17 .
  • FIG. 2 is a longitudinal sectional view of the air conditioning unit 10.
  • the air-conditioning unit 10 which is covered with a wall (including a closed door) and a heat insulating material, is installed in the second-floor hall 15, and above the closed door (not shown) in contact with the second-floor hall 15, room A23, etc.
  • a return air port 55 (suction portion) through which air returns to the air conditioning unit 10 is provided, and a return air port filter 85 (filter portion A) is provided.
  • the air-conditioning unit 20 and the blower unit 17 are attached to the intermediate plate 21 of the air-conditioning unit 10, and behind them, there are a room or space to be air-conditioned, walls, covered with a heat insulating material, and airtightly treated.
  • the air conditioning unit 20 blows part of the air sucked from the return air port 55 by the blower unit 17 (air mixed with the return air from the room and the space and the outdoor air introduced from the outside in the hall 15 on the second floor). (not shown), the air is sucked from the suction port 96 on the top surface and the front surface, cleaned by the air conditioning unit filter 86 (filter unit B), and heat-exchanged with the refrigerant by the heat exchanger (not shown). The air is blown downward from the outlet 97 .
  • an air purifier 90 is provided so as to partition the upper and lower parts of the air conditioning unit 10 .
  • a mixing unit 95 in which the air sucked from the return air port 55 (at the second floor hall 15, the return air from the rooms and spaces and the outdoor air introduced from the outside) This is a space in which part of the mixed air) and the air blown out from the air conditioning unit 20 are mixed.
  • the air blower 17 uses a fan (not shown) to blow the air blown out from the air conditioner 20 and a part of the air that bypasses the air conditioner 20 without being sucked into the air conditioner 20 from the return air port 55 .
  • the conditioned air mixed in the mixing unit 95 is sucked from the suction port 98, further cleaned by the blower unit filter 87 (filter unit C), flowed into the air conditioned air passage A30, and the connection unit 35 It passes through and enters the air-conditioning ventilation path B31 of the inter-floor 34. Since the plurality of blower sections 17 are provided with the blower section filter 87 (filter section C), the air flow sucked into the blower section 17 has an appropriate resistance, and the air flow is controlled upstream of the blower section filter 87 (filter section C).
  • the mixing section 95 which is the space in front, the remaining part of the air blown out from the air conditioning section 20 and part of the air sucked in from the return air port 55 (suction section) stays for a while, resulting in a turbulent flow. As a result, mixing is promoted, and the air quality (temperature, humidity, cleanliness, etc.) becomes conditioned air that is uniform. The air quality becomes uniform, resulting in uniform air quality inside the building.
  • FIG. 3 is a vertical cross-sectional view of the air conditioning unit 10, similar to FIG.
  • the air blowing unit 17 has a sirocco fan (not shown)
  • the air outlet (not shown) of the casing (not shown) and the air outlet 22 are close to each other, and the duct is not connected to the air outlet 22 in an open state.
  • the flow of blown air may not be stable, so in that case, if a blowing duct 36 with a length of about 1.5 m is connected to the blowing port 22, the cross-sectional area will be temporarily reduced to increase the wind speed. As a result, the flow may be stabilized and the performance of the air blower 17 may be exhibited.
  • the blowout duct 36 is a flexible duct with an inner diameter of 150 mm, which has high heat insulation and moisture resistance.
  • External covering material 100 non-breathable, non-moisture permeable, small surface roughness (surface unevenness), thickness 0, heat insulating material such as glass wool with a thickness of 25 mm and a density of about 24 kg / m 3 , polyester non-woven fabric, etc. .1mm thick polypropylene film, soft vinyl chloride film, PET film, and other internal covering materials, air passages for conditioned air, etc., and molded polypropylene resin, etc.
  • a core material (not shown) is provided so that even if the blowout duct 36 is bent, it will not buckle and the cross-sectional area of the internal air passage can be secured.
  • One side of the blow-out duct 36 is connected to the blow-out port 22 of the blower section 17, and the other side is connected to a hole provided in a partition wall 37 fixed to a beam or the like of the air-conditioning air-flow passage B31 in the inter-floor 34. , the air-conditioned air blown by the air blower 17 enters the air-conditioned air passage B31.
  • the main purpose of the partition wall 37 is to fix the blow-out duct 36, and an air-conditioning air duct B31 with high airtightness and heat insulation is provided in the entire inter-floor 34, and the partition wall 37 is provided in it.
  • the blowout duct 36 it is not necessary to apply an airtight seal or the like to the contact surface between the upper, lower, left, and right sides of the air conditioning air passage B31 and the contact surface with the blowout duct 36. If the blowout duct 36 is not crushed or blocked, the partition wall 37 is provided. Instead, it is sufficient to simply place the blow-out duct 36 in the air-conditioning air passage B31. In this case, since the blowout duct 36 is connected only to exhibit the performance of the blower section 17, the blower section 17 and the air conditioning air passage B31 are directly connected as an air passage.
  • the blow-out duct 36 is about 1.5 m and extends to the partition wall 37, but there is a blow-out port away from the connection part 35 of the air conditioning air passage B31, and there is a structure that acts as a resistance such as a beam or a joist on the way. If there is a body, the air volume from the air outlet will be less than the designed air volume, and the temperature between rooms or spaces may become uneven, or the temperature in the room or space may become uneven.
  • By extending the blow-out duct 36 to the blow-out port and directly connecting it to the blow-out port it is also possible to blow out the corresponding air volume of the blower section 17 from the blow-out port as it is. For maintenance such as replacement, it is necessary to provide an inspection opening in the ceiling 32 of the first floor, which is the lower part of the inter-floor 34, or the floor 33 of the second floor, which is the upper part.
  • FIG. 4 is a longitudinal sectional view of the air conditioning section 20.
  • the air sucked in from the upper and front suction ports 96 of the housing of the air conditioning unit 20 is cleaned by the air conditioning unit filter 86, heat-exchanged with the refrigerant by the heat exchangers 91 and 92, and blown by the blower 100.
  • the air is blown out from the outlet 97 in the direction in which the louver 94 faces.
  • the air conditioning unit 20 has three operation modes of cooling/heating/reheat dehumidification, and the heat exchangers 91 and 92 have a structure in which the characteristics of the flowing refrigerant change depending on each operation mode, and the roles are switched.
  • both the heat exchangers 91 and 92 function as evaporators through which low-temperature, low-pressure refrigerant flows
  • both the heat exchangers 91 and 92 function as condensers through which high-temperature, high-pressure refrigerant flows. do.
  • the heat exchanger 91 functions as an evaporator through which a low-temperature, low-pressure refrigerant flows
  • the heat exchanger 92 functions as a reheater through which a medium-temperature, medium-pressure refrigerant flows.
  • FIG. 5 is a control block diagram of the same system.
  • the air conditioning unit controller 110 detects the temperature of the conditioned air in the mixing section 95 after passing through the air purifier 90 and before being sucked into the air blowing section 17 in the air conditioning unit 10, and the humidity of the same air. and a dust sensor 113 for detecting the mass concentration of dust in the air.
  • the room temperature controller 120 detects the temperature of the air sucked into the return air port 55 (at the second-floor hall 15, air mixed with the return air from the rooms and spaces and the outdoor air introduced from the outside).
  • the air conditioning unit 20 has an intake temperature sensor 133 that detects the temperature of the intake air heat-exchanged by the heat exchangers 91 and 92, transmits data to the control unit 130, and rotates the blower 100 according to instructions from the control unit 130. It has a fan controller 131 that controls the number of fans and a louver controller 132 that controls the angle of the louvers 94 .
  • the air conditioner outdoor unit 18 includes a compressor control unit 136 that controls the rotation speed of a compressor (not shown) and an outdoor fan control unit 137 that controls the rotation speed of an outdoor fan (not shown) according to instructions from a control unit 135. have.
  • the blower unit 17 has a motor control unit 141 that controls the rotation speed of a motor (not shown) according to instructions from the control unit 140 .
  • the control section 114 of the air conditioning unit controller 110 and the control section 124 of the room temperature controller 120 are connected by a signal line 150 to exchange signals.
  • the control section 114 of the air conditioning unit controller 110 and the control section 130 of the air conditioning section 16 are connected by a signal line 151 to exchange signals.
  • the controller 130 of the air conditioner 20 and the controller 135 of the air conditioner outdoor unit 18 are connected by a signal line 152 to exchange signals.
  • the control section 114 of the air conditioning unit controller 110 and the control sections 140 of the plurality of air blowing sections 17 are connected by signal lines 153, respectively, and exchange signals with each other.
  • the air cleaner 90 has an electric dust collector control section 161 that controls the operation of the electric dust collector according to instructions from the control section 160 .
  • the control section 114 of the air conditioning unit controller 110 and the control section 160 of the air purifier 90 are connected by a signal line 154 to exchange signals.
  • the heat exchange air unit 60 has a motor control section 166 that controls the rotation speed of the motor according to instructions from the control section 165 .
  • the controller 114 of the air conditioning unit controller 110 and the controller 165 of the heat exchange unit 60 are connected by a signal line 155 to exchange signals.
  • the air conditioning unit controller 110 and the room temperature controller 120 are connected to the air conditioning unit 20, the plurality of blowers 17, the air purifier 90, and the heat exchange unit 60 by a plurality of signal lines 150 to 155, respectively, and communicate with each other. and controls the air conditioning ventilation system 1 appropriately.
  • communication is performed by a wired system using a signal line, but a wireless communication unit is provided for each, and a wireless system such as Wi-Fi (registered trademark), Bluetooth (registered trademark), and infrared rays is used. I don't mind.
  • the air conditioning unit 20 when the temperature is set by the temperature setting unit 125 of the room temperature controller 120 and the air conditioning and ventilation system 1 is operated, the air conditioning unit 20, the plurality of air blowing units 17, the air purifier 90, and the heat exchange air unit 60 are operated. , is properly controlled and operated by the air conditioning unit controller 110 . Return air after air conditioning of each room and each space is returned to the hall 15 on the second floor through the return air path by a plurality of fans 17. - ⁇ Also, the outdoor air cleaned by the filter box 70 and heat-exchanged with the indoor air by the heat exchange air unit 60 enters the second floor hall 15 through the ventilation air supply port 71 .
  • the rest of the air sucked from the return air ports 55 in the plurality of air blowing units 17 bypasses the air conditioning unit 20 and passes through the air purifier 90 together with the blown air blown out from the air conditioning unit 20 to further fine bacteria and the like. is removed, the air is purified, and in the mixing section 95, well-mixed conditioned air is obtained.
  • the plurality of blower sections 17 draw in air-conditioned air from the suction port 98, further clean it with the blower section filter 87 (filter section C), and flow it into the air-conditioned air passage A30.
  • the air volume of the air conditioning unit 20 is about 600 m 3 /h, and the temperature of the blown air is about 10 K during cooling and about 20 K during heating with respect to the temperature of the intake air. Since the total air volume of the blowing section 17 is about 1500 m 3 /h, the remaining about 900 m 3 /h of the air sucked in from the return air port 55 bypasses the air conditioner 20 and the mixing section 95 , approximately 1500 m 3 /h of conditioned air of approximately 5 K during cooling and within approximately 10 K during heating is sucked into the plurality of air blowing sections 17 .
  • the building 2 is highly airtight and highly insulated, and there is almost no temperature gradient in the return air path. It is almost the same as the average temperature of each room and the average temperature of each space.
  • the air-conditioning air duct A30 is connected to the air-conditioning air duct B31 at the connection part 35, and both are far from the outer skin of the building 2, and are surrounded by rooms, spaces, walls, and heat insulating materials, and are also airtightly treated. A temperature gradient of the conditioned air in the conditioned air duct is almost non-existent.
  • the inner surfaces of the air-conditioning air duct A30 and the air-conditioning air duct B31 are substrate boards, beams, joists, etc., and fine dust and the like originally adhered to them are mixed with the room or space by the air-conditioned air passing through.
  • the material may also serve as an airtight sheet or may be attached alone.
  • the conditioned air even if the conditioned air is not attached, if the conditioned air is allowed to flow continuously for a while, it will be cleaned by the plurality of filter units and the air purifier 90, and will be discharged to the outside by the exhaust fan of the heat exchange air unit 60 and the ceiling-mounted ventilation fan 81. After that, the cleaned conditioned air circulates in the building 2.
  • the air-conditioned air that has passed through the air-conditioned air passage B31 is blown out from the air outlet 42 of the entrance 13, and the motors of the air blowers 45 and 46 that can adjust the air volume to 100 m 3 /h to 200 m 3 /h are operated.
  • the sucked conditioned air is blown out from the outlet 40 of the room A23 and the outlet 41 of the room B24 to air-condition and ventilate the entrance 13, the room A23 and the room B24.
  • the air is cooled by the plurality of filter units and the air cleaner 90 within about 5 K during cooling and within about 10 K during heating.
  • Cleaned air-conditioning air is passed through the air-conditioning air passage A30 and the air-conditioning air passage B31 surrounded by rooms, spaces, etc. by the air blower 17, and from the outlets 40, 41, 42, into the room A23 and the room B24. Since the conditioned air is blown out to the entrance 13, even if it passes through the conditioned air passages A30 and B31, there is almost no temperature gradient. , Cleaned conditioned air with a large air volume of about 10K or less during heating is blown out from the outlets 40, 41, 42, and the inside of the building 2 is air-conditioned and ventilated with a very comfortable and uniform temperature and very good air quality. .
  • the air-conditioning air passage A30 and the air-conditioning air passage B31 there is a large amount of clean air of about 5K during cooling and about 10K during heating with respect to the temperature of the room and space around the air-conditioning air passage. Since the air-conditioned air passes through, condensation does not occur inside and outside the air-conditioning air passage, and especially moisture, dust, bacteria, etc. are less likely to stay and accumulate in the air-conditioning air passage.
  • the air outlets 40 and 41 are provided with blower fans because they are farther from the connection part 35 of the air conditioning air passage B31 than the air outlet 42.
  • the air volume from the air outlets 40 and 41 may be less than the designed air volume, such as when the opening area of the air outlets 50 and 51 is small, and the temperature between the rooms and spaces may become uneven. This is because there is a possibility that the temperature in the room or space may become uneven.
  • the cross-sectional area of the air-conditioning air passage B31 is large and the wind speed in the air-conditioning air passage B31 is small, the specific gravity of the air-conditioned air is affected.
  • the 2nd floor is warm enough, but the air volume from the air outlet on the ceiling of the 1st floor is small, and the 1st floor is cold.
  • outlets 40, 41, 42 and the fans 45, 46 can be removed from the room A23, the room B24, and the entrance 13 so that maintenance such as periodic cleaning and replacement for long-term use are possible. Alternatively, it is necessary to provide an inspection opening nearby.
  • the conditioned air that conditioned and ventilated each room and each space returns to the second floor hall 15 from the exhaust port 50 on the first floor through the entrance 13 and the stairs 14, and returns to the second floor hall 15 from the exhaust port 51 on the second floor. 15 and return to the air conditioning unit 10 through the return air port 55 .
  • the air sucked from the return air port 55 (air mixed with the return air from the rooms and spaces and the outdoor air introduced from the outside in the hall 15 on the second floor) is again conditioned by the air conditioning unit 10, and each room Since the heat is supplied to each space, the heat and air quality of the return air are reused, resulting in energy saving.
  • the air containing odors, harmful substances, etc. is completely heat-exchanged by the heat exchange air unit 60 with the outdoor air cleaned by the filter box 70, exhausted to the outside from the outdoor exhaust hood A66, and returned air from the room and space.
  • a part of the air mixed with the outdoor air introduced from the outside replaces the air of the toilet 61.
  • the ceiling-mounted ventilation fan 81 is operated at a high notch to quickly discharge the air directly to the outside while the thunder 76 is removed. Therefore, part of the air mixed with the return air from the room or space and the outdoor air introduced from the outside replaces the air in the bathroom 80. Therefore, when stable, the air quality (temperature and humidity) in the bathroom 80 is close to that of conditioned air , cleanliness, etc.).
  • the amount of air blown by each air blower 17 is determined from the volume of each room and each space. Airflow required for air conditioning is at least 8m 3 /h or more per 2.5m 3 room, ideally 20m 3 /h or more. . Since the blower unit 17 rotates a sirocco fan (not shown) with a highly efficient DC motor (not shown), the rotation speed of the sirocco fan (not shown) is controlled by the control unit 140 and the motor control unit 140 depending on the air conditioning load and the like. It is controlled by the unit 141 .
  • the number of air blowing units 17 is one for each air outlet, but if the air blowing unit 17 has a margin for the required air blow amount described above, the number of air outlets may be increased depending on the shape of the room or space. Although it is possible to do so, there is a possibility that moisture, dust, bacteria, etc. will accumulate and accumulate in the air-conditioning air duct along the way due to changes in air volume distribution due to resistance in the air-conditioning air duct and reduction in wind speed. Also, maintenance such as cleaning is difficult, so in principle, it is desirable to have a ratio of 1:1. If multiple outlets are to be provided, a blower fan should be installed at the outlet, or the inside of the branch may be cleaned or replaced later. It is necessary to provide an inspection door nearby so that
  • the air conditioning unit 20 selects the capacity and the number of units depending on the air conditioning load of the building 2. In selecting the capacity, the capacity (building It is desirable to select an air conditioner with an appropriate rated capacity (100% at most) for the air conditioning load, because it will continue to operate at a low frequency when stable, resulting in more energy saving and stable temperature and humidity without hunting. Air sucked from the return air port 55 in the air conditioning unit 10 (air mixed with the outdoor air introduced from the outside and the return air from the rooms and spaces in the hall 15 on the second floor) and the blown air conditioned by the air conditioning unit 20 and ensure a uniform temperature with little temperature difference between each room and each space.
  • the air volume of the air conditioning unit 20 is 50% or less of the total air volume of the plurality of air blowing units 17 .
  • the blower unit 17 that blows air to each room and each space has a blowing volume of about 100 m 3 /h for a weak air volume, about 150 m 3 /h for a medium air volume, and 200 m 3 /h for a strong air volume.
  • the total air blowing volume is about 1000 m 3 /h to 2000 m 3 /h, which is larger than the air conditioning air volume of the air conditioning unit 20, and 30 to 60% of the total air blowing volume is used for air conditioning. It is set as the air conditioning air volume (weak air mode) of the unit 20 .
  • the conditioned air volume is the volume of air that passes through the heat exchanger (not shown) of the air conditioning unit 20.
  • the air conditioning unit 20 In order to blow conditioned air into each room with a large air volume, pressure loss due to passage through the heat exchanger is avoided.
  • the air volume of the bypass air passage shall be excluded from the air conditioning air volume.
  • the amount of outdoor air introduced by the heat exchange air unit 60 is 24 hours in the case of a floor area of about 100 m 2 and a ceiling height of 2.5 m with a ventilation rate of 0.5 times/h.
  • the ventilation air volume is 125 m 3 /h.
  • the exhaust air volume of the ceiling-mounted ventilation fan 81 increases by about 80 m 3 /h. Since the amount of outdoor air introduced in the building 2 is slightly increased, while introducing an appropriate amount of fresh and air-purified outdoor air to the building 2 as a whole, moisture, carbon dioxide, odors, VOCs, dust, bacteria, etc. can be discharged, saving energy. A healthy and comfortable air-conditioning ventilation can be achieved.
  • the blowout temperature of the air conditioning unit 20 in the cooling operation is about 10K or more lower than the temperature of the air sucked from the return air port 55, which is 26°C. It mixes with the air sucked from the port 55 and reaches 21° C., which is about 5K lower than the temperature of the air sucked from the return air port 55. Since it is sucked into the air blower 17 and passes through the air conditioning air passage, there is a temperature gradient. Instead, the air is blown out from the outlet into each room and space at 21°C. At the time of stability, the surroundings of the air conditioning duct are air-conditioned and ventilated rooms and spaces. 24°C, which is close to When the room temperature is 25° C.
  • the dew point temperature is 17° C., and no condensation occurs on the outer peripheral surface of the air-conditioning air duct.
  • the temperature and humidity of the air blown out from the air conditioning unit 20 is 25° C., which is the same as the room temperature. Even if the humidity is a little higher at 80% due to re-evaporation of the condensed water on the evaporator of the air conditioner 20, the dew point temperature is 21° C., and no condensation occurs on the inner peripheral surface of the air conditioning air duct.
  • the air blown out from the air-conditioning unit flows through the duct as it is.
  • the inner peripheral surface of is cooled to about 17°C.
  • the blown air has a temperature of 25° C. and a relative humidity of 80% and a dew point of 21° C. After passing through the duct, condensation forms on the inner peripheral surface of the duct.
  • the blowout temperature of the air conditioning unit 20 in heating operation is 42°C, which is about 20°C higher than the temperature of the air sucked from the return air port 55, which is 20°C. It mixes with the air sucked in through the port 55 and reaches a temperature of 30° C., which is about 10 K higher than the temperature of the air sucked in through the return air port 55. °C, it blows out from the outlet into each room and each space.
  • the surroundings of the air-conditioning air duct are air-conditioned and ventilated rooms and spaces. 23°C, which is close to The temperature and humidity of the air blown from the air blowing section 17 is 30° C.
  • the air conditioning unit 20 turns off the thermostat, and the compressor stops, the temperature and humidity of the air blown from the blower unit 17 is 21° C., which is the same as the room temperature. The humidity rises to 60%, the dew point temperature is 12° C., and no condensation occurs on the inner peripheral surface of the air-conditioning air duct.
  • the dew point temperature is 17°C and no condensation occurs.
  • the temperature in that space will be close to the outside air temperature. For example, in a state where the outside temperature is 0°C and the space temperature is 2°C, the air blown out by the air conditioning unit is flowed through the duct as it is, so the air temperature is 40°C, which is about 20K higher than the intake air temperature of the air conditioning unit.
  • the dew point temperature becomes 13° C.
  • the inner surface temperature of the duct becomes 13° C. or less
  • dew condensation occurs on the inner peripheral surface of the duct.
  • the thermostat is turned off and the compressor stops
  • the blown air has a temperature of 21° C. and a relative humidity of 60% and a dew point temperature of 13° C., and condensation occurs in the same manner.
  • Humidification by a humidifier increases the relative humidity, which further increases the amount of condensation.
  • the total air volume of 1500 m 3 /h of the plurality of air blowing units 17 is significantly larger than the air volume of 600 m 3 / h of the air conditioning unit 20, and the temperature of each room and space of about 1500 m 3 /h Since conditioned air within about 10K during heating is blown into the room and space, the temperature of the room and space is stable for a long time. Also, in determining the capacity of the air conditioning unit 20, the ability to continue the operation of the compressor (not shown) at a low frequency with a higher COP (appropriate rated capacity for the air conditioning load of the building, at most 100%). Select an air conditioner, etc.
  • the set temperature of the air conditioning unit 20 is slightly lower than the average temperature of the room and space (within about 5 K during cooling) so that the compressor (not shown) operates at a low frequency for a long time when stable. ), set a little higher (within about 10K during heating). Since the house is highly airtight and highly insulated, the average temperature of the rooms and spaces, the temperature of the air sucked from the return air port 55 (suction part), and the temperature of the air sucked into the air conditioning part 20 are almost the same. When the temperature of the intake air of the air conditioning unit 20 is slightly higher (during cooling) or slightly lower (during heating) than the set temperature, the compressor operates at a low frequency with the thermo ON state. Hunting of temperature and humidity and a state where the COP is low when the compressor starts up do not occur, and the entire inside of the building 2 is energy-saving, comfortable and uniform in temperature and humidity.
  • the air conditioning unit 20 continues for a long time in the thermo ON state with a small temperature difference, and the compressor (not shown) continues to operate, so the surface temperature of the evaporator, the so-called evaporation
  • the temperature drops below the dew point temperature of the intake air
  • the moisture in the intake air condenses on the evaporator, and the amount of dehumidification removed increases with long-term operation, and the absolute humidity of the blown air decreases continuously for a long period of time.
  • the absolute humidity of the conditioned air also decreases, and the relative humidity of the air-conditioned air passage, room, and space in which the conditioned air flows also decreases.
  • the intake air temperature of the air conditioning unit 10 becomes about 26°C, and the set temperature of the air conditioning unit 20 is about 2 to 4K lower than the intake air temperature of 26°C. , 22° C.
  • the air conditioning unit 20 continues the thermo ON state with a small temperature difference for a long time, the compressor (not shown) continues to operate at a low frequency, and the amount of dehumidification removed is also
  • the relative humidity in the air-conditioning air passages, rooms, and spaces through which the air-conditioning air with low absolute humidity flows is reduced to 40% or less.
  • the condensed water condensed on the evaporator when the thermostat is ON is re-evaporated by the intake air when the compressor stops when the thermostat is OFF and the evaporation temperature rises.
  • the absolute humidity of the blown air rises and becomes very uncomfortable high absolute humidity air.
  • the frequency of turning off the thermostat is reduced, and such conditioned air is unlikely to occur.
  • the capacity of the air conditioning unit 20 is determined as described above, the change in the air conditioning load due to the outdoor temperature, for example, when the temperature is not so high during the rainy season, but when the humidity is high (temperature 27 ° C, relative humidity of 80% or more), when the air conditioning unit 20 is operated for cooling, the sensible heat capacity of a general air conditioner is high, so the temperature drops relatively quickly and the thermostat is turned off.
  • the absolute humidity of the blowing air does not decrease, the absolute humidity of the conditioned air does not decrease, the relative humidity in the air-conditioning ventilation duct, room, and space through which the conditioned air flows does not decrease, only the temperature decreases, but the relative humidity increases. may be lost.
  • the operation mode of the air conditioning unit 20 is set to reheat dehumidification operation
  • the heat exchanger 91 serves as an evaporator through which a low-temperature, low-pressure refrigerant flows
  • the heat exchanger 92 serves as a reheater through which a medium-temperature, medium-pressure refrigerant flows. Since it functions, the air is blown out at a temperature higher than that of the intake air and with a low absolute humidity, and is blown out from the blow-out port 87 so that the temperature does not drop and the absolute humidity drops.
  • the reheat dehumidifying thermostat continues for a long time, and the compressor (not shown) continues to operate.
  • the dew point temperature of the intake air becomes lower than the dew point temperature of the intake air, and the moisture of the intake air condenses on the heat exchanger 91 (evaporator).
  • the absolute humidity of the conditioned air is lowered, the absolute humidity of the conditioned air is also lowered, and the relative humidity of the air-conditioned air passage, the room, and the space in which the conditioned air flows is also lowered.
  • the heat pump type heat exchanger 92 reheater
  • the reheater may be a heat exchanger that uses hot water generated by a heat source such as a fuel cell.
  • the conditioned air passing through the air-conditioning air duct has little dust, bacteria, moisture, etc., and the inside of the air-conditioning air duct is less likely to condense. In addition, it is less likely that mold or the like will propagate.
  • the exhaust duct A65, the air supply duct A68, the air supply duct B72, and the blow-out duct 36 are also designed to suppress moisture generation due to dew condensation and propagation of mold due to accumulation of dust as much as possible.
  • the nonwoven fabric is breathable and moisture permeable, and dust, moisture, mold spores, etc. adhere to the heat insulating material inside the nonwoven fabric, causing mold. May reproduce.
  • the insulation material is glass wool
  • the fibers will stick together even if they are dry, and a large amount of air necessary for the insulation function will accumulate. As a result, the heat insulation function deteriorates, so once condensation occurs inside the duct, it becomes even more likely to occur.
  • the nonwoven fabric has a large surface roughness (irregularities on the surface), if for some reason a large amount of dust or the like is contained in the passing air, it is likely to be caught on the nonwoven fabric and deposited.
  • the brush when cleaning the inside of the duct using a machine with a rotating brush or the like, the brush may get caught on the irregularities on the surface of the nonwoven fabric and damage the nonwoven fabric.
  • the entry of dust and mold spores is suppressed by passing through the outside air cleaning filter 69, but the collection efficiency is not 100%, and the heat exchange element 63 exchanges all the heat with the indoor air.
  • dew condensation can be suppressed, but there is a high possibility of dew condensation in severe winters and extreme heat. It is difficult for dust, mold, bacteria, and odors to enter inside.
  • the air supply duct A68 by using the ventilation duct described above, it is difficult for dust, mold spores, moisture, etc. to adhere to at least the inside of the air supply duct A68. Condensation due to contact with outdoor air is also reduced.
  • the exhaust duct A65 As for the exhaust duct A65, by using the ventilation duct described above, it is difficult for dust, mold spores, moisture, etc. to adhere to at least the inside of the exhaust duct A65, slowing down the progress of dirt, and removing dust from the outdoor exhaust hood A66. , mold spores, moisture, etc. are easily discharged, and dew condensation due to contact with outdoor air in the outdoor exhaust hood A66 is also reduced.
  • the air conditioning unit 20 When the temperature is set by the temperature setting unit 125 of the room temperature controller 120 and the air conditioning ventilation system 1 is operated, the air conditioning unit 20, the plurality of air blowing units 17, the air purifier 90, and the heat exchange air unit 60 are controlled by the air conditioning unit controller. 110 is properly controlled and operated, the contents of which are as follows.
  • a temperature sensor 111 of an air conditioning unit controller 110 detects the temperature, humidity, and dust concentration of the conditioned air in the mixing section 95 in the air conditioning unit 10, a humidity sensor 112 detects the humidity of the air, and a dust sensor detects the mass concentration of dust in the air.
  • the sensor 113 detects the temperature of the air sucked in from the return air port 55 (in the second floor hall 15, the return air from the rooms and spaces and the introduced outdoor air is mixed) temperature sensor 121 of the room temperature controller 120 Detected by a humidity sensor 122 that detects the humidity of the air and a dust sensor 123 that detects the mass concentration of dust in the air. 114 the data is sent. Also, the temperature data set by the temperature setting unit 125 of the room temperature controller 120 is sent to the control unit 124 , and the data is sent from the control unit 124 to the control unit 114 via the signal line 150 .
  • the control unit 114 compares the temperature detected by the temperature sensor 121 with the temperature set by the temperature setting unit 125, and determines the operation mode of the air conditioning unit 20 to be either cooling or heating.
  • the humidity detected by the humidity sensor 122 is compared with a threshold value, and if it is lower than the threshold value, the cooling operation is performed, and if it is higher than the threshold value, the reheat dehumidification operation is determined.
  • the control unit 114 estimates the average temperature of the room and space from the temperature of the air sucked in from the return air port 55 detected by the temperature sensor 121, , the average temperature of the air in the air conditioning duct A30 and the air conditioning duct B31 is estimated, and the average temperature of the room and space is adjusted to the set temperature.
  • the set temperature of the air conditioning unit 20 and the air blowing amount of the air blowing unit 17 are determined so that the average temperature of the air in the air conditioning blow passage is within 5 K during cooling and within 10 K during heating.
  • the previously determined operation mode (cooling/heating/reheat dehumidification) of the air conditioning unit 20, the set temperature of the air conditioning unit 20, and the air blowing volume of the air blowing unit 17 are respectively signaled to the control unit 130 of the air conditioning unit 20 through the signal line 151. and send signals to the controllers 140 of the plurality of air blowers 17 through the signal line 153 .
  • the building has a floor area of about 100 m 2 and a ceiling height of 2.5 m.
  • the air blowing volume per unit is about 100 m 3 /h at a weak air volume and 300 m 3 /h at a maximum air volume.
  • the total blast volume is set to 1000 m 3 /h to 2000 m 3 /h, which is greater than the conditioned air volume of the air conditioning unit 20, and the air volume of 30 to 60% of the total blast volume is the air conditioned air volume of the air conditioning unit 20 (weak wind mode).
  • the air flow rate is not set to 0, and the wind speed of the conditioned air in the air conditioning air passage is always 0.5 m / s. Control with the above.
  • the air-conditioning air passage When this is applied to the air-conditioning air passage, the amount of moisture condensed on the inner peripheral surface of the air-conditioning air passage increases in proportion to the wind speed of the conditioned air. In order to evaporate as quickly as possible even if dew condensation occurs, the air flow rate is not set to 0, and the conditioned air is always flowing.
  • the control unit 130 of the air conditioning unit 20 that has received the signal of the operation mode and the set temperature determines the operating state of the compressor of the air conditioning unit 20 together with the data of the suction temperature from the suction temperature sensor 133, and the blower control unit 131 and the louver control unit 132 are instructed about the number of rotations of the fan 90 and the angle of the louver 94, respectively, and a signal is sent to the control unit 135 of the air conditioning outdoor unit 18 through the signal line 152.
  • the controller 135 of the air conditioner outdoor unit 18 that receives the similar signal instructs the compressor controller 136 and the outdoor fan controller 137 about the rotation speed of the compressor and the rotation speed of the outdoor fan, respectively.
  • the control units 140 of the plurality of air blowing units 17 that have received the air blow volume signal instruct the motor control units 141 of the respective motor rotation speeds. Furthermore, the control unit 114 compares the concentration of dust detected by the dust sensor 123 with a threshold value, and determines to stop the air purifier 90 when the concentration is lower than the threshold value, and decides to operate the air purifier 90 when it is higher than the threshold value. Then, a signal is sent to the controller 160 of the air purifier 90 through the signal line 154, and the controller 160 receiving the signal instructs the electric dust collector controller 161 to stop/operate.
  • the 24-hour ventilation air volume according to the size of the building 2 is set by the ventilation air volume setting means (not shown) of the air conditioning unit controller 110, and the control unit 114 controls the heat exchange.
  • a signal is sent to the control section 165 of the air unit 60 through the signal line 155, and the control section 165 instructs the motor control section 166 to set the fan rotation speed according to the air volume. If the dust concentration is significantly higher than the threshold value, it is temporarily decided to increase the ventilation air volume to be higher than the 24-hour ventilation air volume, and the motor control unit 166 is instructed to increase its rotation speed.
  • a control unit (not shown) of the ceiling-mounted ventilation fan 81 and the control unit 114 are connected by a signal line, and the humidity and dust concentration detected by the humidity sensor 122 and the dust sensor 123 are significantly larger than the threshold value.
  • a decision may be made to operate the ceiling-mounted ventilation fan 81 , and a signal may be sent from the control unit 114 to the control unit (not shown) of the ceiling-mounted ventilation fan 81 .
  • the air supply/exhaust balance of the entire building 2 is disturbed by the exhaust air from the ceiling-embedded ventilation fan 81, so only the introduction fan (not shown) that introduces the outdoor air of the heat exchange air unit 60 has its rotational speed reduced.
  • a signal may be sent from the controller 114 to the controller 165 to increase the air supply and exhaust air.
  • the control unit 114 determines whether the outdoor temperature is about 35° C. in summer, the relative humidity is about 40%, the temperature detected by the temperature sensor 121 of the room temperature controller 120 is 28° C., and the temperature set by the temperature setting unit 125 is 25° C., the control unit 114 Then, once the operation mode of the air conditioning unit 20 is determined to be cooling, when the humidity detected by the humidity sensor 122 is 50%, it is lower than the threshold value of 70%, so the cooling operation is determined. Based on the temperature of 28° C. detected by the temperature sensor 121, the control unit 114 estimates the average temperature of the room and space to be 27° C. Based on the temperature of 25° C.
  • the average temperature of the air in the air conditioning duct is Assuming the temperature to be 25°C, the average temperature of the room/space of 27°C is assumed to be the set temperature of 25°C.
  • the air conditioning unit 20 is set so that the average temperature of the air in the air conditioning duct is 22°C to 27°C within 5K (the average temperature in the air conditioning duct at this point is 25°C).
  • the temperature is determined to be 22° C.
  • the air blowing volume of the air blowing unit 17 is determined to be 200 m 3 /h
  • each signal is sent through the signal line 151 to the control unit 130 of the air conditioning unit 20, and through the signal line 153, a plurality of air blowing A signal is sent to the control unit 140 of the unit 17 .
  • the control unit 130 of the air conditioning unit 20 receives the signal of the operation mode “cooling” and the set temperature “22° C.”
  • the rotation speed of the blower 90 is 900 r/min
  • the angle of the louver 94 is 45 degrees downward from the horizontal
  • the compressor is operated at a medium frequency of 52 Hz
  • the rotation speed of the outdoor blower is 600 r/min. instruct.
  • the controllers 140 of the plurality of blowers 17 that have received the signal of the air blow volume of "200 m 3 /h" instruct the respective motor controllers 141 to set the rotation speed of each motor to, for example, 1200 r/min.
  • the control unit In 114 the operation mode of the air conditioning unit 20 is once determined to be cooling, and when the humidity detected by the humidity sensor 122 is 80%, it is higher than the threshold value of 70%, so reheat dehumidification operation is determined. Based on the temperature of 24° C. detected by the temperature sensor 121, the control unit 114 estimates the average temperature of the room and space to be 23° C. Based on the temperature of 20° C.
  • the average temperature of the air in the air conditioning duct is The temperature is assumed to be 20°C, and the average temperature of the room and space is 23°C so that the set temperature is 22°C, and the average temperature of the room and space is 23°C.
  • the air conditioning unit 20 is set so that the average temperature of the air in the air conditioning duct is 18°C to 23°C within 5K (the average temperature in the air conditioning duct at this point is 20°C).
  • the temperature is determined to be 22° C.
  • the air blow volume of the air blower 17 is determined to be 150 m 3 /h
  • each signal is sent to the control unit 130 of the air conditioner 20 through the signal line 151, and a plurality of air blows are sent through the signal line 153.
  • a signal is sent to the control unit 140 of the unit 17 .
  • the control unit 130 of the air conditioning unit 20 receives the signal of the operation mode “reheat dehumidification” and the set temperature “22° C.”
  • the operating conditions of the compressor, etc. for example, the rotation speed of the fan 90 is 600 r/min, the angle of the louver 94 is 45 degrees downward from the horizontal, the compressor is operated at a low frequency of 32 Hz, and the rotation speed of the outdoor fan is 600 r/min. and so on.
  • the controllers 140 of the plurality of blowers 17 that have received the signal of the air blow volume of "150 m 3 /h" instruct the respective motor controllers 141 to set the rotation speed of each motor to 900 r/min, for example.
  • the control unit 114 controls the air conditioning unit 20
  • the operation mode of is determined as heating.
  • the control unit 114 estimates the average temperature of the room and space to be 17° C.
  • the average temperature of the air in the air conditioning duct is Assuming the temperature to be 25°C, the average temperature of the room/space of 17°C is assumed to be the set temperature of 20°C.
  • the air conditioning unit 20 is set so that the average temperature of the air in the air conditioning duct is 17°C to 27°C within 10K during heating (the average temperature in the air conditioning duct at this point is 25°C).
  • the temperature is determined to be 22° C.
  • the air blowing volume of the air blowing unit 17 is determined to be 200 m 3 /h
  • each signal is sent through the signal line 151 to the control unit 130 of the air conditioning unit 20, and through the signal line 153, a plurality of air blowing A signal is sent to the control unit 140 of the unit 17 .
  • the control unit 130 of the air conditioning unit 20 receives the signal of the operation mode “heating” and the set temperature “22° C.” For example, the rotation speed of the fan 90 is 900 r/min, the angle of the louver 94 is 60 degrees downward from the horizontal, the compressor is operated at a medium frequency of 52 Hz, and the rotation speed of the outdoor fan is 900 r/min. instruct.
  • the controllers 140 of the plurality of blowers 17 that have received the signal of the air blow volume of "200 m 3 /h" instruct the respective motor controllers 141 to set the rotation speed of each motor to, for example, 1200 r/min.
  • the control unit 114 keeps the average temperature of the room and space at the set temperature. determines the set temperature of the air conditioning unit 20 and the air blowing volume of the air blowing unit 17 so that the average temperature of the air in the air conditioning air passage is within 10 K, and controls the air conditioning unit 20 through the signal line 151. A signal is sent to the unit 130 , and a signal is sent to the control unit 140 of the plurality of blower units 17 through the signal line 153 .
  • the control unit 130 of the air conditioning unit 20 receives the operation mode and set temperature signal, and together with the suction temperature data from the suction temperature sensor 133, determines the operating state of the compressor of the air conditioning unit 20, for example, the rotation speed of the blower.
  • control units 140 of the plurality of air blowing units 17 that have received the air blow volume signal instruct the respective motor control units 141 of the rotation speeds of the respective motors. The above is repeated until the air conditioning unit controller 110 stops.
  • the air blower 17 is controlled in rotation speed during operation, but does not stop, and continues to rotate the sirocco fan and blow air to the air conditioning air passage. This is because it is effective in keeping the air in the air-conditioning ducts moving, sweeping out surface dust and the like from the air outlet, evaporating moisture, and making the temperature and humidity in the building 2 uniform, including inside and outside the air-conditioning ducts. be. Basically, it is desirable that the operation by the air-conditioning unit controller 110 should be continuous 24 hours a day, 365 days a year, except for maintenance stoppages and long-term absences.
  • the blower unit 17 Since the blower unit 17 is rotated by a highly efficient DC motor (not shown), it is originally energy saving, and the power consumption is further reduced in proportion to the rotation speed, but the compressor of the air conditioning outdoor unit 18 is the consumption of this system. It accounts for a large proportion of electricity. Therefore, even in continuous operation, if the air conditioning load is not particularly large due to the outdoor temperature or solar radiation, the compressor operates at a low frequency or stops during stable operation, so the air blower 17 continues to operate. Although the power consumption of the system is very low, it is very effective in preventing the adhesion and deposition of dust, mold, and moisture in the air-conditioning air duct.
  • the average temperature of the room and space should be set as the set temperature
  • the air in the air-conditioning ventilation path should be within 5K during cooling and within 10K during heating, relative to the average temperature of the air around the air-conditioning ventilation path. If it is not possible to achieve both the average temperature of the , when the air conditioning load is large, hidden operations provided in the air conditioning unit controller 110 (for example, the set temperature is set to the minimum or maximum temperature at the start of operation, etc.) , keeping the average temperature of the air in the air conditioning duct within 5 K during cooling and within 10 K during heating. However, basically, the amount of moisture, dust, bacteria, etc.
  • the air-conditioning unit 17 in the air passing through the air-conditioning air passage is significantly less than in a normal duct-type air-conditioning and ventilation system, and the air-conditioning unit with an appropriate capacity for a highly airtight and highly insulated building 2.
  • 20 is provided, the total blowing volume of the blowing unit 17 is made larger than the air conditioning air volume of the air conditioning unit 20, and the air volume of 30 to 60% of the total air volume is set as the air conditioning air volume of the air conditioning unit 20 (weak wind mode).
  • the temperature of the blown air from the air conditioning unit 20 is approximately equal to the temperature of the intake air
  • the average temperature of the air in the air conditioning duct is approximately equal to the average temperature of the air around the air conditioning duct.
  • the building 2 has a ceiling heat insulation specification and a floor heat insulation specification that can reduce the construction area and reduce the heat insulation construction area.
  • the ceiling 32 on the 1st floor and the floor 33 on the 2nd floor are provided with air outlets, but in order to increase the effective space in the building 2 and to increase the durability of the frame itself of the building 2, the roof insulation specification and basic insulation specification are used, and the attic A space 9 and an underfloor space 12 are used as a heat insulating space, and an air conditioning unit 10 and an air conditioning ventilation passage are provided there.
  • the conditioned air may be blown out from each outlet through the conditioned air passage of the space 12, and depending on the temperature distribution and obstacles in each room and space, the outlet can be selected from the floor and the ceiling, and the attic space and the underfloor space can be selected. Since this is also a heat insulating space, the space where the air quality in the building 2 can be uniform is expanded, and while using the attic and underfloor as a storage room, a storage room, a room for hobbies such as music, condensation and dust accumulation in the air conditioning ventilation path, It is possible to prevent the growth of mold and the like.
  • both the attic space 9 and the underfloor space are close to the outer skin, and the air conditioning load increases due to the solar radiation load from the roof 8 above the attic space 9 and the heat transfer load from the foundation 4 of the underfloor space 12, etc., resulting in insulation loss. Therefore, it is necessary to ensure proper insulation and airtightness, and to consider the above increase in air conditioning load when selecting an air conditioning unit.
  • the roof insulation specification and basic insulation specification are used, even if the attic space 9 and the underfloor space 12, which are heat insulating spaces, are not provided with an air-conditioning air duct, air outlets are provided in the attic space 9 and the underfloor space 12 to blow air.
  • the air conditioning duct or the like is connected between the portion 17 and the air outlet to blow conditioned air, the space through which the air conditioning duct or the like passes will be air conditioned. It is possible to prepare for the risk of changes in the temperature and deterioration of insulation materials over time. Since the entire building 2 is air-conditioned with conditioned air, the temperature of the entire building 2 becomes uniform with little spatial temperature difference between rooms, heat transfer is small, and even though a comfortable space is maintained, energy is saved. In particular, since the attic space 9 and the underfloor space 12 are large spaces facing the outer wall of the building 2, the building 2 can be further heat-insulated and energy-saving air conditioning can be achieved.
  • the air conditioning unit 20 is a so-called air conditioning indoor unit in which the heat exchangers 91 and 92 and the blower 90 are housed in an integrated housing, the blower unit 17 is a so-called blower, and the air conditioning unit 10 is an air conditioner.
  • the room is described as a relatively compact room of about 1 tsubo surrounded by heat insulating walls on all sides, but the air conditioning unit 10 is a housing surrounded by sheet metal or the like, and the air conditioning unit 20 is provided in the housing. Only a heat exchanger is provided, and a plurality of blowers are provided as the air blower section 17.
  • part of the air sucked into the air conditioning unit 10 is blown out by passing through the heat exchanger, and the air is blown out to the air conditioning unit 10.
  • a part of the sucked air may be used as bypass air that does not pass through the heat exchanger, the bypass air and the blown air may be mixed in the housing to obtain conditioned air, and this conditioned air may be blown to each room and each space.
  • the air conditioner 20, the plurality of blowers 17, and the air purifier 90 have sizes and structures that facilitate maintenance and work such as cleaning.
  • each room when the building 2 has a floor area of about 100 m 2 and a ceiling height of 2.5 m, in order to air-condition and ventilate each room and each space to a uniform temperature with energy saving, each room If the total amount of air blown to each space is 1500 m 3 /h, the number of circulations will be 6 times/h, and the processing air volume of the air purifier 90 is also 1500 m 3 /h, so the number of circulations is 6 times/h. It is a rational system that cleans the air of the entire building 2 including the inside of the air-conditioning ventilation path by blowing a large amount of air for the air-conditioning and ventilation of the entire building 2.
  • the electric dust collection system has lower ventilation resistance than the HEPA filter system, so it has the merits of low power consumption and operating noise of the air blower 17, less clogging, and a longer service life.
  • it has the disadvantages of low transient dust collection efficiency and generation of by-products such as ozone.
  • the HEPA filter type has the disadvantages of high ventilation resistance, high power consumption of the air blower 17, large operating noise, easy clogging, and short life. It has the advantages of being high in particle size, easy to capture substances with finer particle diameters in a short time, and not generating by-products such as ozone.
  • the dust and mold spore level particles to be removed can be removed by any method if the operation is performed for a long time. 10, the wind speed of the air in the air conditioning unit 10, the frequency of maintenance, and the user's point of view.
  • the performance (PQ, etc.) of the blower section 17 must be greatly improved, and noise also increases.
  • a plurality of air blowers 17, for example, ten air blowers 17 blow air and circulate in the building 2, so the performance improvement of each air blower 17 is moderated.
  • the air in the building 2 can be cleaned with high efficiency by increasing the total blowing volume. Furthermore, if the size of the return air port 55 of the air conditioning unit 10 is set so that the air velocity passing through the HEPA filter is 1 m/s or less, the increase in noise can be suppressed. If you have enough space, it's relatively easy.
  • the plurality of filter units and the air purifier 90 are arranged in order from the upstream side of the air passage in the air conditioning unit 10 toward the air conditioning air passage A30 and the air conditioning air passage B31.
  • the air conditioner filter 86 low efficiency
  • the pre-filter of the air cleaner 90, the air cleaner 90 can also collect particles of 0.3 ⁇ m
  • the air blower filter 87 efficiency 30%
  • the circulation path It may be provided in the middle, and regarding the order of arrangement in the circulation path of the filter part and the air cleaner 90 and in the air conditioning unit 10, those with large particles that can be collected or those with low collection efficiency are upstream.
  • the blower filter 87 of the present embodiment is effective for cleaning the conditioned air and promoting mixing of the conditioned air in the mixing unit 95 upstream of the blower filter 87.
  • the filter section is provided immediately before the , even if there is leakage in the air passage, other filter sections, or the air purifier 90 located upstream, it is effective in reliably suppressing the intrusion of dust and the like.
  • the air blower filter 87 is provided at the position as it is in consideration of the balance between the maintenance frequency and the degree of mixing promotion, and the pre-return air port filter (efficiency 30%) is additionally provided upstream of the return air port filter 85. , pre-return air port filter (efficiency 30%), return air port filter 85 (efficiency 80% or more), air conditioning unit filter 86 (low efficiency), pre-filter of air cleaner 90, air cleaner 90 (0.3 ⁇ m Particles can also be collected), and it is rational to use the air blower filter 87 .
  • the air conditioning unit filter 86 (low efficiency), there is an air passage that bypasses the air conditioning unit filter 86 in the circulation path.
  • the temperature of the air around the air-conditioning ventilation path A30 and the air-conditioning ventilation path B31 created by the air conditioning unit 10 provided with the suction unit, the air conditioning unit 20, and the air blowing unit 17 is within 5 K during cooling and within 5 K during heating.
  • By blowing conditioned air within 10K into the conditioned air passage with a large air volume it blows out from the air outlets 40, 41, 42 of the room A 23, room B 24, and the entrance 13, and the rooms in the building 2 with high airtightness and high heat insulation. Since the space is air-conditioned, the inside of the building 2, including the space with a large air-conditioning load such as a solar radiation load, tends to be comfortable and uniform in temperature and humidity.
  • the air-conditioning duct is surrounded by an air-conditioned room, space, or heat insulating material, dew condensation inside and outside the air-conditioning duct during cooling and inside the air-conditioning duct during heating is less likely to occur.
  • the return air port filter 85 filter section A
  • the air-conditioning unit filter 86 filter unit B
  • the air-blowing unit filter 87 filter unit C
  • the air in the building 2 is cleaned by flowing into the path A30 and the air conditioning ventilation path B31, and the risk of dust, etc., which is one of the breeding conditions for mold, flowing into the air conditioning ventilation path is further reduced.
  • B, and C are in the air conditioning unit 10, maintenance such as cleaning is easy.
  • a heat exchange air unit 60 and an outdoor air cleaning filter 69 are provided in the outdoor air introduction path to purify the outdoor air to be introduced, and the so-called dirty zone (toilet, washroom, etc.) that does not have an air outlet is connected to the outside.
  • the cleaned outdoor air is introduced, and the air inside the building 2 that is contaminated with dust and moisture.
  • the inside of the building 2 can be ventilated while discharging the .
  • the air in the bathroom 80 and the kitchen, etc. which generate moisture other than the moisture generated by humans in the building 2 due to bathing and cooking, can be eliminated by installing a ceiling-embedded ventilation fan 81 that exhausts the air to the outside of the building 2. Since the moisture does not stay in the air and is not contained in the conditioned air, the moisture does not flow into the conditioned air duct.
  • part of the air sucked from the return air port (suction portion) 55 is sucked into the air conditioning unit 20 by the air blowing unit 17 of the air conditioning unit 10, air-conditioned, and blown out.
  • Part of the air sucked from the suction unit is not sucked into the air conditioning unit 20, but joins with the air blown from the air conditioning unit 20 in the mixing unit 95 and mixed.
  • the air volume of the air blowing unit 17 is significantly larger than the air volume of the air conditioning unit 20, and the temperature of the room and space is within 5 K during cooling and within 10 K during heating. , the temperature of the room and space does not fluctuate significantly such as overshooting, and the temperature of the air drawn into the air conditioning unit 20 is stable for a long time, and the temperature is close to the set temperature.
  • the air conditioning unit 20 continues the thermo ON state with a small temperature difference for a long time, and the compressor continues to operate at a low frequency, so the surface temperature of the evaporator, the so-called evaporation temperature, When the temperature drops below the dew point temperature of the air, moisture in the air sucked in condenses on the evaporator.
  • the absolute humidity of the room is also lowered, and the relative humidity of the air-conditioning air passage, the room, and the space through which the air-conditioned air flows is also lowered. Furthermore, since the air volume of the air blowing section 17 is not zero, and the specifications are such that the conditioned air is always supplied, even if dew condensation occurs in the air conditioned air passage, it can be evaporated as quickly as possible.
  • the air volume of the air blowing unit 17 whose running cost per unit air volume is significantly lower than the air volume of the air conditioning unit 20 whose running cost per unit air volume is high is increased.
  • air-conditioning air is generated and passed through the air-conditioning air passage A30 and the air-conditioning air passage B31, which saves energy.
  • air conditioner air conditioning unit
  • at least two air conditioners with a capacity of 600 m 3 /h are required.
  • the total cost is about 30 to 40 yen/h, but in order to create conditioned air with an air conditioner (air conditioning unit) and a blower (blower unit), one air conditioner and a 200 m 3 /h blower are required. 6 units are required, and if the capacity is controlled and the thermostat is not turned off, the fan is a DC motor and consumes about 5 W/h of power, so it is estimated that the total cost will be only about 20 yen/h, which is almost the same as one air conditioner. be done.
  • the air conditioner fan is a cross-flow fan, so the static pressure is low and it is not possible to blow air with a duct.
  • the blower is an axial fan, it has high static pressure and is suitable for air passages with a relatively narrow cross-sectional area, such as air conditioning passages, where the wind speed is high. and lower running costs.
  • the air-conditioning air duct through which air-conditioned air flows is inevitably divided structurally in a two-story house or more, and is provided in the space 34 between the existing first and second floors, and the surface area of the air-conditioning air duct is increased. Since the upper and lower surfaces, which account for most of the space, are surrounded by air-conditioned rooms and spaces, there is no need to enclose them with heat insulating materials.
  • Highly efficient air conditioning and ventilation can be performed with less heat loss from the air conditioning air inlet to the air outlet of the air conditioning air passage. Furthermore, the air-conditioning unit 10 and the air-conditioning air passage are directly connected. Since the conditioned air is blown out from the air conditioning unit 10 to air-condition the room or space, the air passage from the air conditioning unit 10 to the outlets 40 to 42 is almost straight at the shortest distance, and the pressure loss on the way and the heat loss are also small. Air-conditioning ventilation with a rational structure can be performed with less construction work.
  • one heat exchanger 91 functions as an evaporator through which a low-temperature, low-pressure refrigerant flows
  • the other heat exchanger 92 functions as a reheater through which medium-temperature, medium-pressure refrigerant flows.
  • the blown air has a low absolute humidity and is blown out from the blowout port 97, so that the reheat dehumidification thermostat is kept ON for a long time, and the compressor continues to operate.
  • the surface temperature of the evaporator the so-called evaporation temperature, becomes lower than the dew point temperature of the intake air, and the moisture of the intake air condenses on the evaporator.
  • the absolute humidity of the blown air decreases, the absolute humidity of the air-conditioned air also decreases, and the relative humidity of the air-conditioned air passages, rooms, and spaces in which the air-conditioned air flows also decreases. Condensation is less likely to occur on the air-conditioning air passage A30 and the air-conditioning air passage B31.
  • an air purifier 90 of HEPA filter type or electric dust collection type is provided in the circulation path or air conditioning unit 10, and in order to remove mold spore level particles contained in the conditioned air, the conditioned air passage A30 through which the conditioned air passes, Mold is less likely to propagate in the air-conditioning air duct B31, and mold, bacteria, odors, etc. in the air-conditioning air duct B31 are less likely to enter the building 2, and a healthy and comfortable space can be realized.
  • the average temperature of the room and space automatically becomes the set temperature, which is highly convenient. is the average temperature of the air in the air conditioning duct within 10K, so it is possible to keep the temperature of the room and space set by the user while suppressing condensation inside and outside the air conditioning duct. However, it is certainly difficult for mold and the like to propagate. Furthermore, the average temperature of the room and space automatically becomes the set temperature, which is highly convenient. is the average temperature of the air in the air-conditioning duct within 10K, it is possible to control the dew condensation inside and outside the air-conditioning duct A30 and air-conditioning duct B31 while keeping the temperature of the room and space set by the user. Even if there is a change in load or the like, fungi or the like are certainly unlikely to propagate.
  • FIG. 6 is a vertical cross-sectional view of the air-conditioning air passage B31 between floors 34.
  • the air-conditioning air duct B31 is surrounded by a decorative board 183 corresponding to the ceiling 32 on the first floor and a structural plywood 182 corresponding to the floor 33 on the second floor. It is a space with high airtightness and heat insulation, covered with an outer wall, etc., and airtight processing such as pasting an airtight sheet around the contact surface.
  • An internal covering material 186 such as a polypropylene film, a soft vinyl chloride film, a PET film, or the like, having small irregularities is provided.
  • the maximum height of the air conditioning air passage B31 is 340 mm, and the minimum height of the air passage B185 sandwiched between the beam 180 and the joist 181 is 70 mm.
  • the air velocity of the air conditioning air passage B31 is 0.2 to 0.9 m/s. This is because by setting the maximum wind speed of the air-conditioning air passage B31 to 1 m/s or less, the reduction in air volume due to the pressure loss of the air-conditioning air flowing through the air-conditioning air passage B31 is suppressed, and dew condensation and performance deterioration are prevented.
  • an internal covering material such as polypropylene film, soft vinyl chloride film, PET film, etc., which is non-breathable, non-moisture permeable, and has small surface roughness (unevenness on the surface), is applied to the surface of the air passage A184 where the conditioned air flows.
  • 186, dust, moisture, mold spores, etc. flowing through the air passage A184 do not enter from the inner surface of the decorative board 183, the structural plywood 182, etc., which has air permeability and moisture permeability and has a large uneven surface, and mold is prevented there.
  • the building adopts a system for conveying air-conditioned air and ventilation air, it can be applied not only to ordinary houses but also to air-conditioning and ventilation of buildings such as hotels, offices, commercial facilities, hospitals, factories, and research facilities.
  • Air conditioning ventilation system 2 building 3 ceiling 4 heat insulating material 5 floor 6 heat insulating material 7 heat insulating sash 8 roof 9 attic space 10 air conditioning unit 11 foundation 12 underfloor space 13 entrance 14 stairs 15 2nd floor hall 16 under stairs 17 air blower 18 air conditioning outdoor unit 19 Electric wiring 20 Air conditioning unit 21 Intermediate plate 22 Air outlet 23 Room A 24 Room B 30 air conditioning air passage A 31 air conditioning air passage B 32 Ceiling 33 Floor 34 Inter-floor 35 Connection 36 Air duct 37 Partition wall 40 Air outlet 41 Air outlet 42 Air outlet 45 Air fan 46 Air fan 47 Silent duct 48 Silent duct 50 Exhaust port 51 Exhaust port 55 Return air port (inlet) 60 heat exchange air unit 61 toilet 62 ventilation exhaust port 63 heat exchange element 64 element pre-filter 65 exhaust duct A 66 outdoor exhaust hood A 67 Outdoor air supply hood 68 Air supply duct A 69 Outside air cleaning filter 70 Filter box 71 Ventilation air supply port 72 Air supply duct B 75 Garari 76 Garari 80 Bathroom 81 Ceiling embedded ventilation fan 82 Exhaust duct

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Central Air Conditioning (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Une unité de climatisation 10 et des sorties d'air 40, 41, 42 sont reliées par un conduit d'air de climatisation 30 et un conduit d'air de climatisation B 31. Chaque conduit d'air de climatisation est entouré par au moins l'un quelconque parmi une pièce, un espace, et un matériau isolant entre le conduit d'air de climatisation et l'enveloppe externe du bâtiment 2. De l'air de climatisation à une différence inférieure ou égale à 5 K pendant le refroidissement et inférieure ou égale à 10 K pendant le chauffage par rapport à l'air autour des conduits d'air de climatisation est soufflé à l'intérieur des conduits d'air de climatisation de l'unité de climatisation 10 vers les sorties d'air, ce qui permet de climatiser la pièce et les espaces. Des unités de filtration A, B, C sont disposées à l'intérieur de l'unité de climatisation 10 et nettoient l'air à l'intérieur du bâtiment 2. Un ventilateur d'introduction et un filtre 69 sont disposés dans un conduit d'introduction d'air extérieur et nettoient l'air extérieur qui est introduit. Un ventilateur d'évacuation est disposé dans un conduit d'évacuation d'air intérieur pour évacuer, vers l'extérieur, une partie de l'air qui a traversé les conduits d'air de climatisation et une partie de l'air qui s'est accumulé à l'intérieur du bâtiment 2. En conséquence de ce qui précède, la présente invention concerne un système de climatisation et de ventilation qui ne nécessite pas d'entretien tel que le nettoyage des conduits d'air de climatisation, car les substances nocives telles que la poussière, les moisissures et les odeurs ne se fixent pas, ne s'accumulent pas ou ne se condensent pas à l'intérieur des conduits d'air de climatisation, même si une opération de 24 heures est poursuivie pendant de longues périodes.
PCT/JP2022/043435 2021-12-02 2022-11-25 Système de climatisation et de ventilation WO2023100747A1 (fr)

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