JP3761619B2 - Ceiling surface ventilation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ceiling surface indoor ventilation device suitable for a building such as a house, particularly a highly heat-insulated and airtight house for cold districts.
[0002]
[Prior art]
In buildings such as houses, proper ventilation is important for comfortable living and improvement of building life. In particular, natural ventilation alone is insufficient for highly insulated and airtight houses such as for cold districts, and forced ventilation is required.
As a means for forced ventilation, a device that discharges clean air from an air supply port provided at a predetermined position such as a ceiling surface and discharges contaminated air from an exhaust port is generally employed.
[0003]
[Problems to be solved by the invention]
Contaminants are largely caused by indoor combustion gases and gases emitted from building materials, as well as carbon dioxide and tobacco smoke generated from the human body. However, since the person moves in the room, if the air is sucked from the exhaust port at a fixed position, an appropriate positional relationship cannot be obtained between the position of the person in the room and the exhaust port on the ceiling surface. There is a problem that the pollutant generated from the human body diffuses into the room. Exhausting at many locations on the ceiling at the same time can solve the problem of diffusion of pollutants generated by the human body, but excessive ventilation increases the air conditioning load during cooling and heating, increases the air flow rate, and generates drift. This often causes discomfort to people.
SUMMARY OF THE INVENTION The present invention solves the above-described problem, and can ventilate the pollutants generated from the human body without diffusing, and can provide an appropriate ventilation amount so that a comfortable ventilation can be achieved. The purpose is to provide.
Another object of the present invention is to achieve harmony between ventilation and air conditioning, and to achieve comfortable ventilation and air conditioning.
[0004]
[Means for Solving the Problems]
The ceiling surface indoor ventilation device of the present invention is provided with a plurality of local ventilation exhaust ports dispersed on the ceiling surface in the room, and these exhaust ports are individually connected to a suction fan through a channel opening / closing means. It is a thing. In addition, a human body detection sensor that detects the presence of a person in the divided space is provided for each divided space that is divided into indoor spaces corresponding to the exhaust ports, and the detection signal of the human body detection sensor is on. Control means for opening the opening / closing means of the exhaust port corresponding to the human body detection sensor is provided only during the ON period and a predetermined delay time thereafter.
According to this configuration, when a person moves in the room, the air is exhausted from the exhaust port of the partitioned space where the person is present. When a person is in a certain position, exhaust from the exhaust port above is continued. For this reason, the pollutant generated from the human body is exhausted from the vicinity of the generation site, and ventilation can be performed without causing diffusion. In addition, since exhaust is not performed from the exhaust port where there is no person who is a generation source for ventilation purposes, useless ventilation is not performed and efficient ventilation can be performed. By these, comfortable ventilation with little indoor airflow can be performed with the minimum necessary air volume.
It is desirable that the human body detection sensor is arranged in the vicinity of each exhaust port on the ceiling surface. Accordingly, it is possible to reliably detect a person in the target section space without being obstructed by an obstacle.
[0005]
In the above-described configuration, an air supply port and an exhaust port for base ventilation are further provided on the ceiling surface, and air is blown out from the air supply port and exhaust port for base ventilation regardless of opening and closing of the exhaust port for local ventilation. Provide a base ventilation means to exhaust. As a result, the minimum ventilation that is desirable to ventilate regardless of the presence or absence of people at all times is performed, and when a person enters the room, local ventilation that follows the movement of the person is provided. In combination, it is possible to maintain proper ventilation without excess or deficiency.
In the above configuration, when providing an air conditioner, it is desirable to provide a radiant air conditioner on the ceiling surface. Radiant air-conditioning does not involve convection in the room, and can perform comfortable air-conditioning, and unlike air-conditioning that blows out cold air, there is no problem of air flow interference between air-conditioning and air-conditioning, and air-conditioning and air-conditioning are performed appropriately. be able to.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An example of a proposal that is the basis of the present invention will be described with reference to FIG. Room 1 is a room provided in a highly heat-insulated and air-tight house for cold districts, and a plurality of exhaust vents 3 for local ventilation are provided in a distributed manner on ceiling surface 2 and one location on ceiling surface 2 is provided. An air supply port 4 is provided in the front. Each exhaust port 3 is provided for each of the square ceiling panels 2a arranged vertically and horizontally and arranged in a matrix. Each exhaust port 3 is connected to a suction blower 5 via an exhaust flow path 6 formed of a duct. The exhaust passage 6 is branched for each exhaust port 3, and a damper 7 as an individual opening / closing means for each exhaust port 3 is provided in each branch exhaust passage 6 a. The damper 7 is a drive type such as a motor or an electromagnetic type. The air supply port 4 is connected to another blower 8 via an air supply passage 9. The exhaust passage 6 and the air supply passage 9 are connected to an outdoor exhaust port and an outdoor air supply port (both not shown) via the blowers 5 and 8, respectively, and perform heat exchange between the exhaust and the air supply. It is connected to a heat exchanger (not shown).
[0007]
A human body detection sensor 10 is provided in the vicinity of each exhaust port 3 on the ceiling surface 2, and this sensor 10 is provided for each partitioned space S (FIG. 1B) that divides the indoor space corresponding to each exhaust port 3. In addition, the detection range is to detect the presence of a person in the partitioned space S. The partitioned space S is not a space in which partitions are provided between each other but a range of a space partitioned in a plane, and in this example, corresponds to the planar range of each ceiling panel 2a. The detection range of the human body detection sensor 10 only needs to roughly correspond to the partitioned space S, and it is preferable that the human body detection sensors 10 of both the partitioned spaces S are turned on in the vicinity of the adjacent portion of the partitioned space S. .
[0008]
The control unit 11 is a control unit that opens the damper 7 of the exhaust port 3 corresponding to the human body detection sensor 10 only while the detection signal of the human body detection sensor 10 is on, and uses an integrated circuit, a microcomputer, or the like. It consists of an electronic circuit or a relay type electric circuit. The control unit 11 may include a delay unit that keeps the damper 7 open for a predetermined delay time even after the human body detection sensor 10 is turned off. The control means 11 turns off the air supply and exhaust fans 5 and 8 when all the human body detection sensors 10 are off, and turns off the fans 5 and 8 when any one of the human body detection sensors 10 is turned on. Has the function to turn on. In addition, the control means 11 is good also as what opens and closes the damper 7 corresponding to the exhaust port 3 of a predetermined combination in response to the ON / OFF state of each human body detection sensor 10.
[0009]
The operation of the above configuration will be described. When a person 12 for ventilation purposes enters the room 1, the human body detection sensor 10 in the partitioned space S where the person 12 is located is turned on, so that the damper 7 in the partitioned space S is opened by the command of the control means 11. Forced exhaust by suction of the blower 5 is performed from the exhaust port 3. When the person 12 moves in the room 1, the person 12 moves and exhausts from the exhaust port 3 of the partitioned space S where the person 12 is present, and the exhaust from the exhaust port 3 of the partitioned space S where the person leaves is exhausted. Stopped. Thus, since exhaust is performed following the movement of the person 12, the pollutant generated from the human body is exhausted from the vicinity of the generation site, and ventilation is performed without causing the diffusion of the pollutant. Further, exhaust is not performed from the exhaust port 3 where there is no person 12 that is a source for ventilation purposes, so that unnecessary ventilation is not performed and efficient ventilation can be performed. By these, comfortable ventilation with little indoor airflow can be performed with the minimum necessary air volume.
[0010]
FIG. 2 shows an embodiment of the present invention. In this example, the following configuration is added to the proposed example of FIG. That is, in the vicinity of both side edges of the ceiling surface 2, slit-shaped air supply ports 13 and exhaust ports 14 for base ventilation extending substantially the entire length of these side edges are provided. The air supply port 4 in the example of FIG. 1 is not provided, but instead the air supply port 13 for base ventilation is provided. The air supply port 13 is connected to an air supply fan 8 via an air supply channel 9, and the base ventilation exhaust port 14 is connected to an exhaust air fan 5 via an exhaust channel 6. In this example, even when all the human body detection sensors 10 are off, the control means 11 keeps the blowers 5 and 8 on if a predetermined switch (not shown) is turned on. Control of each damper 7 by the control means 11 is the same as the example of FIG. The base ventilation means 15 is comprised by the control function part of the air blowers 5 and 8 of the example of FIG. 2, and the control means 11 which always makes this air blowers 5 and 8 an ON state. In addition, you may provide the air blower 5 for exhaust_gas | exhaustion separately for local ventilation and base ventilation.
Further, in this example, each ceiling panel 2a is a ceiling radiant panel having a heat medium passage 16 such as cold / hot water as shown in FIG. 2B, and the ceiling surface material of the ceiling panel 2a is made of high heat such as aluminum. It is a conductive heat sink. The ceiling radiating panel and the heat medium supplying means 17 for circulating the heat medium through the heat medium flow path 16 constitute a radiant cooling and heating device 18.
[0011]
In the case of this configuration, the minimum ventilation is normally performed from the supply port 13 and the exhaust port 14 for base ventilation, and when the person 12 enters the room 1, the exhaust port 3 for local ventilation is used. The local ventilation that followed the movement of the person by is used together. Therefore, it is possible to maintain an appropriate ventilation state without excess or deficiency. Moreover, since air conditioning is performed by radiant air conditioning from the ceiling panel 2a, comfortable air conditioning can be performed without accompanying indoor convection. In addition, unlike air conditioning that blows out cool / warm air, there is less problem of airflow interference between ventilation and air conditioning, and both air conditioning and ventilation can be performed appropriately.
[0012]
FIG. 3 shows a reference proposal example . In this example, the space behind the ceiling is divided into a plurality of functional chambers 19 that are open in the vertical and horizontal directions, and each of the functional chambers 19 or a part of the functional chambers 19 is provided with an exhaust port 3 or an air supply port 4. It is. In the functional chamber 19, a functional unit 20 including at least one of a dehumidifying means, a cooling / heating means, and an air cleaning means is provided. For example, an electric heater is used as the heating means of the functional unit 20. Some of the functional chambers 19 communicate with other functional chambers 19 indoors through a blower, and these functional chambers 19 are used as a function chamber on the blow-out side and a function chamber on the suction side for indoor circulation. Also good. The lower surface opening of the functional chamber 19 is covered with a functional film 21 such as a breathable cloth. The indoor space for local ventilation is classified into the function chambers 19 for each of the function chambers 19 including the function chambers 19 in which the exhaust ports 3 of the function chambers 19 are opened and the suction side ventilation chambers 19 for indoor circulation. Correspondingly, the human body detection sensor 10 is provided for each of the divided spaces as in the example of FIG. Further, control means (not shown) for opening a damper (not shown) serving as an opening / closing means for the exhaust port 3 corresponding to the human body detection sensor 10 only while the detection signal of the human body detection sensor 10 is on. It is provided with an electronic circuit or an electric circuit.
In the case of this configuration, in addition to ventilation following the movement of a person similar to the example of FIG. 1, air can be circulated indoors by the air cleaning function of the functional chamber 19 to achieve air cleaning, and air conditioning can be performed. .
[0013]
FIG. 4 shows a duct built-in ceiling panel used as the ceiling panel 2a in the example of FIG. 1 or FIG. The ceiling panel 25 is made of heat-insulating foam resin, and has an exhaust port 3 opened on the lower surface and an in-panel duct 26 communicating with the exhaust port 3 and opened on the panel end surface. Since the duct 26 is formed in the ceiling panel 25 as described above, it is not necessary to provide another duct or to insulate the duct, and the workability is good. Moreover, cost reduction can be achieved.
[0014]
【The invention's effect】
The ceiling surface indoor ventilation device of the present invention is provided with a plurality of local ventilation exhaust ports dispersed on the ceiling surface in the room, and these exhaust ports are individually connected to a suction fan through a channel opening / closing means. In addition, a human body detection sensor for detecting the presence of a person in this divided space is provided for each divided space corresponding to each exhaust port, and only while the detection signal of the human body detection sensor is on. Since the control means for opening the opening / closing means of the exhaust port corresponding to the human body detection sensor is provided, the pollutant generated from the human body can be exhausted without diffusing, and an appropriate ventilation amount can be obtained. Comfortable ventilation.
In addition, a base air supply and exhaust port is provided on the ceiling surface, and the base vents and exhausts air from the air supply and exhaust ports for base ventilation regardless of opening and closing of the local ventilation exhaust ports. Since the ventilation means is provided , more effective ventilation can be performed by combining the base ventilation of the entire room and the local ventilation that follows the movement of the person.
In the above configuration, the case of installing the human body detection sensor in the vicinity of the exhaust port for each local ventilation ceiling surface, without being blocked by obstacles, it is possible to reliably detect the person in partitioning the space of interest .
Furthermore, when a radiant cooling / heating device is installed on the ceiling surface, comfortable cooling / heating can be achieved by radiant cooling / heating, and there is little problem of interference between the airflow and ventilation flow for cooling / heating, and both cooling / heating and ventilation are performed appropriately. be able to.
[Brief description of the drawings]
FIG. 1A is a perspective view showing a conceptual configuration of a ceiling surface indoor ventilation device according to a proposal example as a basis of the present invention, and FIG.
2A is a perspective view showing a conceptual configuration of a ceiling surface indoor ventilation device according to one embodiment of the present invention, and FIG. 2B is an explanatory view of the ceiling radiating panel.
FIG. 3 is a cross-sectional view showing a conceptual configuration of a ceiling surface indoor ventilation device according to a reference proposal example .
FIG. 4 is a perspective view of a ceiling panel with a duct that can be used in each embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Room, 2 ... Ceiling, 3 ... Exhaust port, 4 ... Air supply port, 5 ... Air blower, 6 ... Exhaust flow path, 10 ... Human body detection sensor, 11 ... Control means, 13 ... Air supply port for base ventilation, 14 ... exhaust port for base ventilation, 15 ... base ventilation means, 18 ... ceiling radiant cooling and heating system

Claims (3)

A plurality of local ventilation exhaust ports are distributed on the ceiling surface of the room, and these exhaust ports are individually connected to a suction fan through the opening and closing means of the flow path, corresponding to each of the exhaust ports. A human body detection sensor for detecting the presence of a person in the divided space is provided for each divided space into which the indoor space is divided, and only while the detection signal of the human body detection sensor is turned on, or during this on period and thereafter only set a control means for opening the closing means of the exhaust port corresponding to the human body detecting sensor by a predetermined delay time, the air supply port and an exhaust port for the base ventilation provided on the ceiling surface, the exhaust port for the local ventilation A ceiling surface indoor ventilation device provided with base ventilation means for blowing out air and exhausting air from the air supply and exhaust ports for base ventilation regardless of opening and closing .   The ceiling surface indoor ventilation apparatus according to claim 1, wherein the human body detection sensor is installed in the vicinity of each local ventilation exhaust port on the ceiling surface. Ceiling room ventilation system according to claim 1 or claim 2 Symbol mounting to the ceiling surface provided with a radiation heating and cooling device.

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