# US 11,898,775 B2 · Conditioning ventilation system

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- Number: US 11,898,775 B2
- Document ID: US11898775B2
- Status: Granted
- Kind: B2
- Application number: 18/020,041
- Filed: 2021-08-17
- Published: 2023-08-03
- Granted: 2024-02-13
- Earliest claimed: 2020-08-17
- Assignees: Fh Alliance Inc.
- Applicants: FH alliance Inc.
- Inventors: Kazuro Hiroishi; Mitsunori Matsubara
- Web page: https://patentgrep.com/patent/US11898775B2

## CPC

- F24F 7/08: with separate ducts for supplied and exhausted air {with provisions for reversal of the input and output systems}
- F24F 7/003: in combination with air cleaning
- Y02B 30/56: Heat recovery units
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

The present invention provides a conditioning ventilation system 1. In the conditioning ventilation system 1, each of a plurality of rooms in a building is provided with an air-intake portion 16 and an exhaust means 19, the air-intake portions 16 are provided with a plurality of air blowing sections 13 which send wind through a plurality of ducts 17, a return air path which joins up from a plurality of the exhaust means 19 and returns to the air blowing sections 13 is provided, indoor air is circulated in the building by the air blowing sections 13, an outdoor air introduction path having an opening/closing mechanism is connected to the return air path, each of the plurality of rooms is provided with an exhaust means 26 directing to outdoor and having an opening/closing mechanism 27, outdoor air and indoor air are circulated in the building and, in this state, switching operation can be carried out to discharge air to outdoor independently in the plurality of rooms, energy saving and comfortable space having uniform temperature and excellent air quality is normally realized, and when harmful material flows in or is generated, the harmful material is prevented from being dispersed to another room while swiftly discharging the harmful material, and heat and air quality of return air are effectively utilized.

## Claims

### Claim 1

A conditioning ventilation system wherein
each of a plurality of rooms in a building is provided with an air-intake portion, an exhaust means A and an exhaust means B directing to outdoor having an opening/closing mechanism B capable of adjusting its opening/closing amount and capable of completely closing exhaust gas toward outdoor from the room,
a space other than a living room other than the plurality of rooms is provided with the air-intake portion and the exhaust means A,
an air blowing section which sends wind through a duct is connected to each of the air-intake portion,
the conditioning ventilation system is provided with a return air path which joins up from the plurality of exhaust means A and which returns to an air-conditioning compartment having at least one air conditioning section and the plurality of air blowing sections,
an outdoor air introduction path C having an opening/closing mechanism C capable of adjusting its opening/closing amount and capable of completely closing the same is connected to the return air path, and outdoor air is introduced,
return air from the plurality of rooms and spaces, the outdoor air and air which is air-conditioned by the air conditioning section are circulated in the building by the air blowing section, and, in this state,
volume of air which is discharged from the room to outdoor can be adjusted from 0 by the opening/closing mechanism B of the exhaust means B directing to outdoor of the room independently in the plurality of rooms when wind is sent from the air-intake portion of the room, and outdoor air introducing volume which is introduced into the building can be adjusted by the opening/closing mechanism C,
wherein the building is provided therein with an other room other than the plurality of rooms, the other room is provided with an air-intake portion having an exhaust means B directing to outdoor, an opening/closing mechanism B and a door in a state where the door is closed,
air from an opening formed by opening the door joins up with the outdoor air in midstream of the return air path,
volume of air which is discharged from the other room outdoor can be adjusted from 0 by the opening/closing mechanism B of the exhaust means B directing to outdoor of the other room when wind is sent from the air-intake portion of the other room, and existence or non-existence of return air from the other room can be switched by opening or closing the door.

### Claim 2 (depends on 1)

The conditioning ventilation system according to claim 1, wherein the other room is provided with a ventilation fan upstream or downstream of a wind path of the exhaust means B directing to outdoor.

### Claim 3 (depends on 1)

The conditioning ventilation system according to claim 1, wherein the other room is provided with the door and an exhaust means D having an opening/closing mechanism D connected to the return air path and capable of adjusting an opening/closing amount and capable of completely closing itself, air volume of the return air from the other room can be adjusted by the opening/closing mechanism D.

### Claim 4

A conditioning ventilation system wherein
each of a plurality of rooms in a building is provided with an air-intake portion, an exhaust means A and an exhaust means B directing to outdoor having an opening/closing mechanism B capable of adjusting its opening/closing amount and capable of completely closing exhaust gas toward outdoor from the room,
a space other than a living room other than the plurality of rooms is provided with the air-intake portion and the exhaust means A,
an air blowing section which sends wind through a duct is connected to each of the air-intake portion,
the conditioning ventilation system is provided with a return air path which joins up from the plurality of exhaust means A and which returns to an air-conditioning compartment having at least one air conditioning section and the plurality of air blowing sections,
in which an indoor air discharging path and an outdoor air introduction path D are connected to the return air path,
midstreams of the indoor air discharging path and the outdoor air introduction path D are provided with a heat-exchanging ventilating unit,
return air from the plurality of rooms and spaces, the outdoor air and air which is air-conditioned by the air conditioning section are circulated in the building by the air blowing section, and, in this state,
volume of air which is discharged from the room to outdoor can be adjusted from 0 by the opening/closing mechanism B of the exhaust means B directing to outdoor of the room independently in the plurality of rooms when wind is sent from the air-intake portion of the room,
wherein the building is provided therein with an other room other than the plurality of rooms, the other room is provided with an air-intake portion having an exhaust means B directing to outdoor, an opening/closing mechanism B and a door,
air from an opening formed b opening the door joins up with the outdoor air in midstream of the return air path,
volume of air which is discharged from the other room to outdoor can be adjusted from 0 by the opening closing mechanism B of the exhaust means B directing to outdoor of the other room when wind is sent from the air-intake portion of the other room, and existence or non-existence of return air from the other room can be switched by opening or closing the door,
the heat-exchanging ventilating unit heat-exchanges between the outdoor air introduced from the outdoor air introduction path D and a portion of return air from at least one of the exhaust means A and the opening formed by opening the door and, in this state, a portion of the return air is discharged to outdoor by the indoor air discharging path, and
outdoor air introducing volume introduced into the building can be adjusted by the heat-exchanging ventilating unit,
wherein total blast volume of the plurality of air blowing sections is set greater than air-conditioned air volume of the air conditioning section and the outdoor air introducing volume.

### Claim 5

A conditioning ventilation system in which each of a plurality of rooms in a building is provided with an air-intake portion, an exhaust means D having an opening/closing mechanism D capable of adjusting its opening/closing amount and capable of completely closing itself, an exhaust means B directing to outdoor having an opening/closing mechanism B capable of adjusting its opening/closing amount and capable of completely closing exhaust gas toward outdoor from the room, and a door in a state where the door is closed,
a space other than a living room other than the plurality of rooms is provided with the air-intake portion and an exhaust means A,
an air blowing section which sends wing through a duct is connected to each of the air-intake portions,
the conditioning ventilation system is provided with a return air path which joins up with the plurality of exhaust means D and the exhaust means A, and which returns to an air-conditioning compartment having at least one air conditioning section and the plurality of air blowing sections,
an outdoor air introduction path C having an opening/closing mechanism C capable of adjusting its opening/closing amount and capable of completely closing itself is connected to the return air path, and outdoor air is introduced,
an indoor air discharging path and an outdoor air introduction path D are connected to the return air path,
millstreams of the indoor air discharging path and the outdoor air introduction path D are provided with a heat-exchanging ventilating unit,
the heat-exchanging ventilating unit heat-exchanges between the outdoor air introduced from the outdoor air introduction path D and a portion of return air from at least one of the exhaust means A and the exhaust means D and, in this state, a portion of the return air is discharged to outdoor by the indoor air discharging path,
return air from at least one of the plurality of rooms and the space, the outdoor air and air which is air-conditioned by the air conditioning section are circulated in the building by the air blowing section and, in this state,
volume of air which is discharged from the room to outdoor can be adjusted from 0 by the opening/closing mechanism B of the exhaust means B directing to outdoor of the room independently in the plurality of rooms when wind is sent from the air-intake portion of the room, outdoor air introducing volume which is introduced into the building can be adjusted by the opening/closing mechanism C and the heat-exchanging ventilating unit, return air volume from the plurality of rooms can be adjusted by the opening/closing mechanism D of the exhaust means D independently in the plurality of rooms, wherein
total blast volume of the plurality of air blowing sections is set greater than air-conditioned air volume of the air conditioning section and the outdoor air introducing volume.

### Claim 6 (depends on 5)

The conditioning ventilation system according to claim 5, wherein the room is provided with a ventilation fan upstream or downstream of a wind path of the exhaust means B directing to outdoor.

### Claim 7 (depends on 5)

The conditioning ventilation system according to claim 5, further comprising a control section connected to the air blowing section, the opening/closing mechanism D and the opening/closing mechanism B, wherein the control section, in each of the rooms, in a positive pressure mode, operates the air blowing section, completely opens the opening/closing mechanism D, and completely closes the opening/closing mechanism B, and in a balance mode, operates the air blowing section, completely closes the opening/closing mechanism D, and completely opens the opening/closing mechanism B.

### Claim 8 (depends on 7)

The conditioning ventilation system according to claim 7, wherein the room is provided with harmful material detecting means connected to the control section, the control section determines whether the mode is the positive pressure mode or the balance mode in each of the plurality of rooms based on a level of harmful material detected by the harmful material detecting means.

### Claim 9 (depends on 5)

The conditioning ventilation system according to claim 5, wherein midstream of the return air path is provided with at least one of sterilizing means and deodorizing means, a motor of each of the plurality of air blowing sections is a DC motor, total air volume of volume of air which is discharged to outdoor by at least any one of the exhaust means B and the heat-exchanging ventilating unit and volume of air which is processed by one of the sterilizing means and the deodorizing means is six times or more of volume of the building per one hour.

### Claim 10 (depends on 9)

The conditioning ventilation system according to claim 9, wherein the sterilizing means is a HEPA filter capable of capturing virus of particle diameter of 0.1 μmd or more, and the sterilizing means is provided in a return air port of the air-conditioning compartment.

### Claim 11

A conditioning ventilation system wherein
each of a plurality of rooms in a building is provided with an air-intake portion, an exhaust means A and an exhaust means B directing to outdoor having an opening/closing mechanism B capable of adjusting its opening/closing amount and capable of completely closing exhaust gas toward outdoor from the room,
a space other than a living room other than the plurality of rooms is provided with the air-intake portion and the exhaust means A,
an air blowing section which sends wind through a duct is connected to each of the air-intake portion,
the conditioning ventilation system is provided with a return air path which joins up from the plurality of exhaust means A and which returns to an air-conditioning compartment having at least one air conditioning section and the plurality of air blowing sections,
an outdoor air introduction path C having an opening/closing mechanism C capable of adjusting its opening/closing amount and capable of completely closing the same is connected to the return air path, and outdoor air is introduced,
return air from the plurality of rooms and spaces, the outdoor air and air which is air-conditioned by the air conditioning section are circulated in the building by the air blowing section, and, in this state,
volume of air which is discharged from the room to outdoor can be adjusted from 0 by the opening/closing mechanism B of the exhaust means B directing to outdoor of the room independently in the plurality of rooms when wind is sent from the air-intake portion of the room, and outdoor air introducing volume which is introduced into the building can be adjusted by the opening/closing mechanism C,
wherein midstream of the return air path is provided with at least one of sterilizing means and deodorizing means, a motor of each of the plurality of air blowing sections is a DC motor, total air volume of volume of air which is discharged to outdoor by the exhaust means B, and volume of air which is processed by one of the sterilizing means and the deodorizing means is six times or more of volume of the building per one hour.

### Claim 12 (depends on 11)

The conditioning ventilation system according to claim 11, wherein the sterilizing means is a HEPA filter capable of capturing virus of particle diameter of 0.1 μm or more, and the sterilizing means is provided in a return air port of the air-conditioning compartment.