US-12624848-B2 - Conditioning ventilation system

US12624848B2US 12624848 B2US12624848 B2US 12624848B2US-12624848-B2

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.

Inventors

Kazuro HIROISHI
Mitsunori Matsubara

Assignees

FH ALLIANCE INC.

Dates

Publication Date: 20260512
Application Date: 20231220
Priority Date: 20200817

Claims (4)

1 . A conditioning ventilation system wherein a room in a building is provided with a first air-intake portion and an undercut A of a door and a window B, a space other than the room is provided with a second air-intake portion and an exhaust means A, an air blowing section which sends wind through a duct is connected to the first air-intake portion and the second air-intake portion, an air-conditioning compartment having at least one air conditioning section and the air blowing section is provided, a wind path which returns from the undercut A of the door and the exhaust means A to the air-conditioning compartment is as the return air path, the air-conditioning section includes a heat exchanger and an air blower, a window C connected to the outside of the room is provided with the return air path and the outdoor air is introduced from the window C, by the air blowing section, return air from the room and the space and the outdoor air are sucked into the air conditioning compartment, and air which are mixed with the return air and the outdoor air and air which is air-conditioned by the air conditioning section are circulated in the building, and, in this state, volume of air which is discharged from the room to outdoor can be adjusted from 0 by the opening/closing of the window B 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 of the window C, and an airflow volume of the air blowing section is greater than the air conditioning volume of the air conditioning section.
2 . The conditioning ventilation system according to claim 1 , wherein a ventilation fan is provided in an indoor air exhaust path connected with the return air path and an outdoor air exhaust port, whereby a portion of the return air is exhausted to the outside of the room from the indoor air exhaust path.
3 . A conditioning ventilation system wherein a room in a building is provided with a first air-intake portion and an undercut A of a door and a window B, a space other than the room is provided with a second air-intake portion and an exhaust means A, an air blowing section which sends wind through a duct is connected to the first air-intake portion and the second air-intake portion, an air-conditioning compartment having at least one air conditioning section and the air blowing section is provided, a wind path which returns from the undercut A of the door and the exhaust means A to the air-conditioning compartment is as the return air path, the air conditioning section includes a heat exchanger and an air blower, a window C connected with the outside of the room is provided with the return air path and the outdoor air is introduced from the window C, by the air blowing section, return air from the room and the space and the outdoor air are sucked into the air conditioning compartment, and air which are mixed with the return air and the outdoor air and air which is air-conditioned by the air conditioning section are circulated in the building, and, in this state, volume of air which is discharged from the room to outdoor can be adjusted from 0 by the opening/closing of the window B 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 of the window C, an airflow volume of the air blowing section is greater than the air conditioning volume of the air conditioning section, wherein the return air path is provided with at least one of sterilizing means and deodorizing means, total air volume of volume of air which is discharged from the window B to outdoor, 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.
4 . A conditioning ventilation system wherein a room is provided with an air-intake portion and an undercut A of the door and a window B, a space other than the room is provided with the air-intake portion and an exhaust means A, an air blowing section which sends wind through a duct is connected to the air-intake portion, an air-conditioning compartment having at least one air conditioning section and the air blowing sections is provided, a wind path which returns from the undercut A of the door and the exhaust means A to the air-conditioning compartment is as the return air path, the air conditioning section includes a heat exchanger and an air blower, in which an indoor air discharging path connected with a return air path and an outdoor air exhaust port 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, by the air blowing section, return air from the room and spaces and the outdoor air are sucked into the air conditioning compartment, and air which are mixed with the return air and the outdoor air and air which is air-conditioned by the air conditioning section are circulated in the building, and, in this state, volume of air which is discharged from the room to outdoor can be adjusted from 0 by the opening/closing of the window B when wind is sent from the air-intake portion of the room, 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 the exhaust means A and the undercut A of the door, 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 blast volume of the air blowing section is set greater than air-conditioned air volume of the air conditioning section.

Description

TECHNICAL FIELD The present invention relates to a conditioning ventilation system which ventilates and air-conditions a plurality of rooms in a building. BACKGROUND TECHNIQUE In buildings, for energy saving and comfortable life, airtightness and heat insulation are enhanced more and more. Further, to realize air cleanness and healthy life, ventilation is more emphasized. In a residential house and a non-residential house having a conditioning ventilation system which totally ventilates and air-conditions a room and a space in a building, air which ventilates and air-conditions circulates each room and each space in the building. Therefore, there is a risk that harmful material such as smell and bacteria which are generated or which flows into the room and the space flows into another room, another space and a passage, other people is displeased and infected with bacteria. If ventilation airflow of the entire building is increased to the number of ventilation operations 6 to 12/hour or more and air in the building is replaced with outdoor air according to a guild line (see home page of Ministry of Health, Labour, and Welfare, in literature Commercial Facilities concerning ventilation to improve “poorly ventilated closed space”, P1-P2, Mar. 30, 2020) of U.S. Centers for Disease Control and Prevention (CDC (2003)), harmful material such as smell and bacteria can be discharged. However, noise is also increased, initial cost is high and air-conditioning load is largely increased and therefore, running cost is also high and hence, in a general residential house and a non-residential house, it is actually difficult to realize this. When a system which ventilates and air-conditions in each of rooms and spaces is introduced, since air which ventilates and air-conditions circulates only in the room and the space, there is no risk that smell and bacteria flow into another room or another space, but initial costa and running cost are increased, and space for the system is also required. Distribution of moisture, bacteria, dust and smell becomes non-uniform in the room and space due to shapes of the rooms and spaces, installation of the system and operational state, and uncomfortable room and space are generated. Conventionally, there is a known conditioning ventilation system of this kind in which outside air is introduced into a room to make air-conditioned air, pressure in the room is made negative by an exhaust fan, air blown from the air conditioner is uniformly introduced into the room and the air is evacuated (see patent document 1 for example). Each of a plurality of rooms is provided with a blowoff port of an air-supply fan and a suction port of an exhaust fan, outside air is sterilized by a sterilizing device provided in an air-supply exhaust duct, and the outside air is introduced into the rooms and evacuated. It is known that a negative pressure cabin whose pressure is kept negative by an auxiliary ventilation fan is air-conditioned by an air conditioner and exhaust gas for preventing the air from reversely flowing from this room to another room is sterilized (see patent document 2 for example). To restrain harmful material generated in an arbitral room among a plurality of mutually communicated rooms from diffusing to another room, all of the rooms are normally ventilated in a class 3 centralized ventilation manner and ventilation of a room in which harmful material is generated is switched to class 1 ventilation. It is known that an air supply amount (return air and air which air-conditions outside air) in the room where the harmful material is generated is made smaller than an exhausted air amount of the ventilation device (see patent document 3 for example). Further, to prevent diffusion when harmful material is generated in a certain, it is known that the harmful material is prevented from flowing into another room by a harmful material sensor, an exhaust fan, an air-supply fan and an outdoor discharging damper, and the harmful material is discharged to outside of the room (see patent document 4 for example). PRIOR ART DOCUMENTS Patent Documents [Patent Document 1] Japanese Patent Application Laid-open No. H06-221612 [Patent Document 2] Japanese Patent Application Laid-open No. 2005-257198 [Patent Document 3] Japanese Patent Application Laid-open No. 2019-211139 [Patent Document 4] Japanese Patent Application Laid-open No. 2018-151114 SUMMARY OF THE INVENTION Problem to be Solved by the Invention However, according to the conditioning ventilation system described in patent document 1, when harmful material flows from outside of a room, or when harmful material is generated in a room, bacteria are eliminated by a moth-repellent/sterilizing unit, but it is assumed that moth-repellent/sterilizing operation is carried out in the night when people do not exist in an office or the like, and when people exist, the sterilizing operation cannot be carried out, it is not assumed that the sterilizing operation is