CN219934189U

CN219934189U - Air supply regulator

Info

Publication number: CN219934189U
Application number: CN202090000313.6U
Authority: CN
Inventors: 村上尊宣
Original assignee: Eco Factory Co Ltd
Current assignee: Eco Factory Co Ltd
Priority date: 2020-10-06
Filing date: 2020-10-06
Publication date: 2023-10-31
Anticipated expiration: 2030-10-06
Also published as: DE212020000491U1; TWM623833U; FR3114869A3; KR20220000836U; WO2022074741A1; FR3114869B3

Abstract

The utility model aims to provide an air supply regulator which is easy to construct and replace a filter and can always introduce fresh air into a ventilation object space. The air supply regulator (1) is mainly composed of a main body (10), a cover (20), and a side surface filter (30). The main body (10) is composed of a first housing (11) and a second housing (12), and a gap formed between the first housing (11) and the second housing (12) functions as an air introduction path (14) for guiding outside air introduced from the air supply path (45) into the room. A side surface filter (30) is detachably attached to the side surface of the main body (10) so as to cover the air introduction path (14).

Description

Air supply regulator

Technical Field

The present utility model relates to an air supply regulator. More specifically, the present utility model relates to an air supply regulator that facilitates construction and replacement of a filter, and that can always introduce fresh air into a ventilation target space.

Background

The densification and heat insulation of houses have been advanced, and if ventilation is not performed sufficiently, the carbon dioxide concentration has become high, and particularly in newly built houses and the like, the concentration of formaldehyde and volatile organic compounds (VOC: vapor Organic Composition) may become too high. In addition, insufficient ventilation may cause a high humidity to cause mold and mites, and may cause allergy. In addition, as a countermeasure against infectious diseases such as recent new coronaviruses, it is recommended to periodically introduce outside air into the room so as to avoid the airtight space with poor ventilation as much as possible.

In order to cope with air pollution in such a closed space, recently, a so-called twenty-four-hour ventilation system has been increasingly used in which a certain amount of air is continuously ventilated for twenty-four hours for the entire house.

By adopting the twenty-four hour ventilation system, the flow of air from a living space (living room, bedroom, etc.) to a non-living space (toilet, changing room, etc.) can be formed in a house, and the replacement of air in the house can be promoted, thereby minimizing the influence of polluted air on the human body. In recent years, these techniques are called "planned ventilation" or "ventilation system" as distinguished from local ventilation, and various techniques have been developed as related techniques.

In the twenty-four hour ventilation system, a communication air supply hole formed in a wall surface of a building to communicate outside air with an indoor space is indispensable, and an air supply regulator for introducing outside air into the indoor space and regulating the indoor temperature is attached to the indoor side of the air supply hole. As such a gas supply regulator, for example, patent document 1 discloses a gas supply regulator capable of adjusting a gas supply flow rate by changing an opening area of a gas supply hole.

Specifically, the air supply device includes a shutter that can be opened and closed by an operation unit, and the opening and closing degree of the shutter can be changed by operating the operation unit, so that the air supply flow rate of the air flowing into the room from the air supply hole can be variably adjusted. Thus, for example, the following adjustments can be made: when the air supply regulator is used (when ventilation is performed), the opening degree of the damper is fully opened to increase the air supply amount, so that ventilation is promoted, and when severe weather such as typhoons is performed, the opening degree of the damper is reduced or the opening degree of the damper is fully closed to limit the air supply amount to the room.

The air supply regulator of patent document 1 is provided with a filter for preventing foreign matter such as dust, pollen, or raindrops from entering the room. The filter is generally sheet-shaped and is provided so as to cover the inside of the air supply channel and the indoor opening of the air supply hole. Further, since aged deterioration of the filter due to use and clogging due to dirt develop, a user can always introduce fresh air into the room by periodically cleaning the filter or replacing the filter with a new filter.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2005-16834

Disclosure of Invention

Problems to be solved by the utility model

However, in the air supply regulator of patent document 1, since the filter is provided at the back surface of the baffle plate, the baffle plate needs to be detached from the wall surface in order to clean or replace the filter, which complicates the cleaning or replacement of the filter. Further, since the filter is always blocked by the baffle, the fouling of the filter cannot be visually observed from the outside, and therefore, the filter is blocked by the user by regular cleaning or replacement.

In this way, if clogging is caused without cleaning or replacement of the filter, the original air supply amount cannot be ensured even if the shutter is fully opened. Therefore, ventilation is not promoted, and the amount of supplied air cannot be ensured as planned, and there is a problem that ventilation in the room is not promoted. Further, since the filter of patent document 1 is provided so as to cover the indoor side opening portion of the air supply hole, there is a concern that the reduction in the air supply amount when the filter is deteriorated is further deteriorated.

The present utility model has been made in view of the above-described points, and an object thereof is to provide an air supply regulator which can be easily installed and replaced with a filter and which can always introduce fresh air into a ventilation target space.

Means for solving the problems

In order to achieve the above object, the present utility model provides a gas supply regulator comprising: a main body portion including a first frame body including a flange portion formed with a through hole having a size substantially corresponding to an air supply passage formed through a wall surface of a building, and a second frame body including a frame portion fixed to the first frame body via a coupling member so as to face the first frame body, so as to form an air introduction passage formed by a predetermined gap between the second frame body and the first frame body; a cover portion formed of a plate-like body having a size that covers the entire body portion when viewed from the front; and a side surface filter that is detachably provided along a side surface of the main body so as to cover the air introduction path.

The air supply regulator includes a main body portion including a first housing and a second housing, and is capable of being installed in an air supply passage penetrating through a wall surface formed on the indoor side by fixing the main body portion to the wall surface.

The first housing includes a flange portion having a through hole formed therein, the through hole having a size substantially corresponding to the air supply passage formed through the wall surface of the building, so that the outside air introduced from the air supply passage can be introduced into the room through the through hole.

The second frame is fixed to the first frame via a connecting member so as to face the first frame, and an air introduction path is formed between the second frame and the first frame, the air introduction path being formed on a side surface of the main body portion in a state where the second frame is attached to the first frame. Therefore, the outside air introduced from the air supply passage can be radially introduced into the room through the air introduction passage.

Further, since the cover portion is formed of the plate-like body and has a size that covers the entire main body portion when viewed from the front, the external air introduced from the air supply passage is introduced into the room through the air introduction passage by changing the direction of the external air introduced from the air supply passage to a radial shape including the vertical and horizontal directions when the external air passes through the second frame and collides with the cover portion, and the external air can be introduced into the room over the entire corners of the room with improved directivity. Further, the cover portion also functions as a cover for the main body portion and the air supply passage, and thus the appearance in the indoor space can be improved.

Further, by providing the side surface filter covering the air introduction path, it is possible to prevent the inflow of harmful substances such as dust, pollen, PM2.5, and the like contained in the outside air and raindrops floating in the air into the room.

Further, since the side surface filter is provided on the side surface of the main body, the state of dirt of the side surface filter can be visually confirmed even from the outside. Therefore, the user can easily grasp the replacement timing of the side face filter. In addition, the side filter is detachably provided along the side of the main body, so that the side filter can be easily replaced without disassembling or disassembling the air supply regulator.

In addition, in the case where a fixing hole through which the fixing member can be inserted is formed around the through hole in the first housing, the first housing can be firmly attached to the indoor wall surface by inserting the fixing member (for example, a screw) through the fixing hole.

In addition, when the side filter contains at least 1 antiviral metal component selected from copper oxide, silver oxide, iron oxide, and manganese oxide, the molecules constituting the pollutant such as bacteria and viruses can be denatured, and sterilization and virus inactivation can be performed. Therefore, bacteria and viruses contained in the outside air introduced from the air supply passage can be sterilized, and the cleaned air can be introduced into the room.

In addition, when the surface of the main body is subjected to the heat insulating treatment, for example, even if the main body is made of a metal material, it is less susceptible to temperature changes caused by outside air. Therefore, even when the user directly touches the main body portion by hand during the replacement work of the side face portion filter, the surface temperature of the main body portion is kept constant, and thus, the workability in summer and winter can be improved in particular.

In the case where the surface of the main body is coated with the functional coating material, for example, the functional coating material composed of an antiallergic agent, an antibacterial agent, an antiviral agent, a photocatalyst, a mildewproof agent, an antifouling agent (a water repellent, an oil repellent), a deodorant, an adsorbing material, or the like is coated on the surface of the main body, whereby deterioration of the main body or propagation of mold due to adhesion of harmful substances such as dust, pollen, and PM2.5 floating in the air contained in the outside air introduced from the air supply passage to the main body can be suppressed.

In addition, when the fixing hole is a long hole formed from a predetermined position of the peripheral edge of the first housing toward the through hole, the degree of freedom in adjusting the position when the main body portion is attached to the indoor wall surface can be increased.

In addition, in the case where the second casing has the front filter that covers the second casing when viewed from the front, it is possible to prevent the inflow of harmful substances such as dust, pollen, PM2.5, and raindrops contained in the outside air and suspended in the air into the room.

In addition, in the case where the engagement hole is formed at a predetermined position of the frame portion of the second housing and the engagement piece is provided on one side of the cover portion so as to be engageable with the engagement hole, the cover portion can be attached to and detached from the main body portion by a simple operation of engaging the engagement piece with the engagement hole.

In addition, when a plurality of air introduction holes for introducing air introduced from the air supply passage into the room are formed in the cover portion so as to penetrate from one side to the other side, a part of the outside air introduced from the air supply passage can be introduced into the room through the air introduction holes. Therefore, in addition to the outside air introduced from the air introduction path on the side surface of the main body, the outside air can be introduced from the air introduction hole toward the inside of the room, and therefore, the amount of the outside air introduced can be increased to promote ventilation of the room.

In addition, when the sound absorbing material is provided at a position on the cover portion that substantially corresponds to the indoor opening, wind noise generated when, for example, outside air flows into the air introduction path can be attenuated by the sound absorbing material.

In addition, when the sound absorbing material is larger than the opening area of the air supply passage by a predetermined size in front view, wind noise at the time of introducing outside air can be absorbed over a wide range, and therefore, the effect of attenuating wind noise can be further improved.

Effects of the utility model

The air supply regulator of the present utility model is easy to construct and replace a filter, and can always introduce fresh air into a ventilation target space.

Drawings

Fig. 1 is a diagram showing an overall appearance of a gas supply regulator according to a first embodiment of the present utility model, and (a) is an exploded view.

Fig. 2 is a front view of the air supply regulator of the first embodiment of the present utility model.

Fig. 3 is a side view of the air supply regulator of the first embodiment of the present utility model.

Fig. 4 is a diagram showing an overall appearance of a gas supply regulator according to a second embodiment of the present utility model, and (a) is an exploded view.

Fig. 5 is a side sectional view of a gas supply regulator of a second embodiment of the present utility model.

Fig. 6 is a side sectional view of a gas supply regulator of a third embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model will be described below for an understanding of the present utility model with reference to the drawings. In each of the drawings, for convenience of explanation, a state of the air supply regulator when viewed from the front in a state of being installed on a wall surface in a room is defined as a front view, an upward direction is defined as an upward direction, an opposite direction of the upward direction is defined as a downward direction, an axial direction indicated by the upward direction and the downward direction is defined as a vertical direction, and an axial direction perpendicular to the vertical direction is defined as a horizontal direction.

First embodiment

First, the structure of a gas supply regulator 1 according to a first embodiment of the present utility model will be described with reference to fig. 1. The air supply regulator 1 is mainly composed of a main body 10, a cover 20, and a side filter 30.

The main body 10 is constituted by a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 are formed by sheet metal working from a metal plate material, and are formed in a substantially square shape when viewed from the front. The surface of the main body 10 is subjected to a heat insulating treatment such as a heat insulating coating to prevent the surface from being exposed to the outside air and becoming too hot or too cold.

The surface of the main body 10 may be coated with a functional coating material composed of an antibacterial agent, an antiviral agent, a photocatalyst, a mildew inhibitor, an antifouling agent (a water repellent, an oil repellent), a deodorant, an adsorbent, or the like, instead of or together with the heat insulating treatment. By applying the functional coating in this way, degradation of the main body or propagation of mold due to adhesion of harmful substances such as dust, pollen, PM2.5, etc. floating in the air contained in the outside air introduced from the air supply passage to the main body can be suppressed.

Here, it is not necessarily necessary to perform heat insulating treatment on the surface of the main body 10. However, by performing the heat insulating treatment, the heat insulating treatment is less susceptible to temperature changes caused by outside air, and workability in replacement work when removing the main body 10 and in attachment and detachment work of the side surface filter 30 described later can be improved. In addition, condensation may occur on the surface of the main body 10 particularly in winter where the outside air temperature is low, and this may become a source of mold generation in the house.

In addition, it is not necessarily required to apply a functional paint to the surface of the main body 10. However, from the viewpoint of suppressing degradation of the main body portion and propagation of mold, it is preferable to apply the functional coating.

In addition, the main body 10 does not necessarily need to be made of a metal material. For example, the resin material and the carbon fiber material may be appropriately selected from known materials. In addition, in the case of using a resin material or a carbon fiber material, the change in surface temperature due to exposure to the outside air is small, and therefore, the necessity of performing the heat insulating treatment described above is low.

The main body 10 does not necessarily have to be substantially square in front view. Although the shape of the main body 10 can be changed appropriately, for convenience of explanation, the shape of the main body 10 will be explained below on the premise of a square.

The first housing 11 is substantially square in front view, and is formed of a flange surface 111 attached to the indoor wall surface 41, and an outer edge of the flange surface 111 has a peripheral wall portion (not shown) formed by vertically bending. A through hole 112 is formed in a substantially center of the flange surface 111, and the through hole 112 has an opening area substantially corresponding to the indoor opening 43 of the air supply passage 45 formed through the wall surface 40.

Here, the through hole 112 does not necessarily have to have an opening area substantially corresponding to the indoor side opening 43. The opening area of the indoor opening 43 may be smaller or larger than that of the outdoor opening. However, if the through-hole 112 is formed smaller than the opening area of the general indoor opening 43, the amount of supplied air becomes small, ventilation is not promoted, or there is a concern that wind noise becomes large when outside air passes through the through-hole 112. Therefore, from the viewpoint of promoting ventilation in the room and suppressing wind noise, the opening area of the through-hole 112 is preferably formed to be substantially the same as or larger than the opening area of the general indoor side opening 43.

A plurality of fixing holes 113 are formed in the flange surface 111, and the fixing holes 113 are configured to allow fixing members (not shown) for fixing the main body 10 to the indoor wall surface 41 to be inserted therethrough. As shown in fig. 2, the fixing hole 113 is a long hole formed from four corners of the flange surface 111 toward the substantial center of the through hole 112.

Here, the fixing hole 113 does not necessarily need to be a long hole as shown in fig. 2. For example, a plurality of circular holes through which the fixing member can be inserted may be formed around the through hole 112. However, by forming the fixing hole 113 as a long hole, the degree of freedom in the mounting position of the main body 10 can be increased. That is, even when the existing air supply regulator is replaced with the air supply regulator 1 of the present utility model, the air supply regulator 1 of the present utility model can be mounted along with the mounting hole in which the existing air supply regulator is mounted.

The fixing hole 113 is not necessarily formed from four corners of the flange surface 111 toward the substantial center of the through hole 112, and the position and length of the fixing hole 113 may be appropriately changed.

The fixing hole 113 may be formed by drilling by an operator at the work site when the air supply regulator 1 is fixed to the indoor wall surface 41.

The second housing 12 is substantially square in size as the first housing 11 when seen in front view, and is constituted by four frame portions 121 having a substantially L-shaped cross section and having peripheral wall portions (not designated by reference numerals). A pair of frame portions 121 facing each other among the frame portions 121 constituting the second housing 12 are formed with a total of four engagement holes 122, and the engagement holes 122 are formed with long holes into which engagement pieces 21 of the cover portion 20 described later can be engaged.

Here, the second frame 12 is not necessarily constituted by four frame portions 121, and the second frame 12 may be constituted by bending and molding one frame.

The first housing 11 and the second housing 12 are coupled to each other via a coupling member 13 in a state of facing each other with a predetermined interval therebetween. The connecting member 13 is disposed to connect four corners of the peripheral wall portion of the first housing 11 and the peripheral wall portion of the second housing 12 to each other. The fastening members 13 are fastened to the first housing 11 and the second housing 12 by known fastening means such as bolts and screws or welding.

The gap formed between the first casing 11 and the second casing 12 functions as an air introduction path 14 for guiding the outside air introduced from the air supply path 45 into the room. That is, the outside air introduced from the air supply passage 45 is discharged radially in the up-down direction and the horizontal direction through the air introduction passage 14, and the outside air spreads over the corners of the room.

Here, the first housing 11, the second housing 12, and the connecting member 13 do not necessarily need to be separately configured. For example, the first housing 11, the second housing 12, and the connecting member 13 may be all integrally formed. Alternatively, the first housing 11 and the connecting member 13 may be integrally formed, and only the second housing 12 may be integrally formed, or the second housing 12 and the connecting member 13 may be integrally formed, and only the first housing 11 may be integrally formed.

The cover 20 is a decorative material that is a plate-like body, and has a substantially square shape slightly larger than the main body 10 in front view. A base 22 is attached to the back surface of the cover 20 (in a direction toward the wall surface 40 in a state of being provided to the main body 10), and the base 22 is formed of a square frame having an engagement piece 21 engageable with the engagement hole 122 of the second housing 12.

The engaging piece 21 is formed in a substantially L-shaped hook shape when viewed from the side, and can be engaged with the engaging hole 122 by pressing down the tip of the engaging piece 21 while being inserted into the engaging hole 122, so that the cover portion 20 can be fixed to the main body portion 10 without using a special fixing means. In addition, when the cover 20 is detached from the main body 10, the cover 20 can be easily detached from the main body 10 by temporarily lifting up and pulling out the cover 20.

Here, the method of fixing the cover 20 and the body 10 is not necessarily limited to a method of engaging the engaging piece 21 with the engaging hole 122. For example, the cover 20 and the main body 10 may be fixed by screws, magnets, or other fixing means. However, from the viewpoint of facilitating the attachment and detachment operation, it is preferable that the engagement piece 21 is engaged with the engagement hole 122 as a method of fixing the cover portion 20 to the main body portion 10.

The surface of the opposite side of the back surface of the cover 20 is designed with colors, patterns, and the like in coordination with the indoor wall surface 41, so that the indoor appearance is not incongruous in a state where the air supply regulator 1 is mounted on the indoor wall surface 41.

A side surface filter 30 is provided on a side surface of the main body 10 so as to cover the entire air introduction path 14, and the side surface filter 30 prevents inflow of harmful substances such as dust, pollen, PM2.5, and raindrops contained in the outside air and suspended in the air into the room. The side filter 30 is formed of, for example, a thin sheet and a nonwoven fabric, but the material is not particularly limited.

The side filter 30 is attached to the main body 10 by, for example, a hook and loop fastener (not shown). Specifically, the burr side of the fastening tape may be attached to the main body 10 in advance, and the rounded burr side of the fastening tape may be attached to the side surface filter 30, so that the side surface filter 30 can be attached to and detached from the main body 10.

The second housing 12 of the main body 10 is provided with a front filter 60 so as to cover the entire opening of the second housing 12 when viewed from the front. The front filter 60 is made of the same material as the side filter 30 described above, and can prevent inflow of harmful substances such as dust, pollen, PM2.5, and raindrops contained in the outside air and suspended in the air into the room.

The front filter 60 is attached to the main body 10 by a fastening tape (not shown) in the same manner as the side filter 30 described above. Specifically, the burr side of the hook and loop fastener may be attached to the frame portion 121 of the second housing 12 in advance, and the round burr side of the hook and loop fastener may be attached to the front filter 60, so that the front filter 60 can be attached to and detached from the frame portion 121 of the second housing 12.

The fastening tape described above is not necessarily used as a method for attaching the side filter 30 and the front filter 60. For example, the method may be appropriately selected from known mounting methods such as using an adhesive tape.

In addition, the face filter 60 need not be provided. However, by providing the front filter 60, it is possible to capture harmful substances such as dust, pollen, PM2.5, and the like floating in the air, and raindrops contained in the outside air in 2 stages together with the side filters 30, and thus it is possible to introduce cleaner air into the room.

In this way, the side surface filter 30 is provided along the side surface of the main body 10, and thus, the user can visually recognize the degree of dirt of the side surface filter 30 without decomposing the air supply regulator 1. Therefore, since cleaning or replacement is periodically performed without forgetting to clean or replace the side surface filter 30, fresh outside air can be always introduced into the room to promote ventilation. In addition, since the air supply regulator 1 is not disassembled during the replacement operation of the side filter 30, the replacement can be easily performed by attaching and detaching the fastening tape, and thus the time required for the replacement operation of the side filter 30 can be significantly shortened.

The side filter 30 and the front filter 60 may contain copper oxide as an antiviral metal component. By thus including the antiviral metal components in the side filters 30 and the front filters 60, bacteria and viruses contained in the outside air introduced from the air introduction passage 14 can be deactivated. That is, copper oxide, which is an oxide of copper, is in a state (radical) having unpaired electrons according to the oxidation number even at normal temperature and normal pressure at which light irradiation and heating are not performed.

It is known that an unpaired electron of a radical is substantially unstable, and takes or donates an electron to an atom, molecule, or the like in contact with the radical. Therefore, the radical can denature molecules constituting pollutants such as bacteria and viruses, and sterilize and inactivate viruses.

Here, copper oxide is not necessarily used as the antiviral metal component. For example, one selected from silver oxide, iron oxide, and manganese oxide may be used. However, as a result of the study by the inventors, it was confirmed that the antiviral effect of copper oxide was best.

The air supply regulator 1 according to the embodiment of the present utility model is configured such that the air introduction path 14 is always in an open state, and thus external air is always introduced from the air introduction path 14, but may be applied to, for example, a type in which the cover 20 is slid by a pressure difference to open and close the air introduction path 14, or a type in which the cover 20 is slid by a user operation to open and close the air introduction path 14.

Fig. 3 is a side view showing a state in which the air supply regulator 1 is attached to the wall surface 40. The duct 50 is fitted into the air supply passage 45 formed through the wall surface 40, and the air supply regulator 1 is provided on the indoor wall surface 41 so that the through hole 112 formed in the main body 10 coincides with the opening on one end side of the duct 50. A louver 70 is provided at the other end of the pipe 50 and on the outdoor side wall surface 42.

In this way, the outside air introduced from the louver 70 and passing through the air supply passage 45 is radially introduced from the through hole 112 into the room through the air introduction passage 14. At this time, since harmful substances such as dust, pollen, PM2.5, and the like contained in the outside air and raindrops are captured by the side filter 30 and the front filter 60, the cleaned outside air is always introduced into the room, and ventilation in the closed space can be promoted.

Second embodiment

Next, a gas supply regulator 1a according to a second embodiment of the present utility model will be described with reference to fig. 4 and 5. In the following description, the same reference numerals are given to the constituent parts common to the first embodiment, and overlapping description is omitted.

In the second embodiment, an air introduction hole 23 formed of a plurality of small holes is formed through the cover portion 20, and the air introduction hole 23 is used to introduce air introduced from the air supply passage 45 into the room, as compared with the first embodiment. According to this configuration, since the outside air is introduced into the room from the air introduction hole 23 in addition to the air introduction passage 14 formed in the side surface of the main body 10, the air supply amount increases, and ventilation in the room can be promoted.

The air introduction hole 23 is formed at a position substantially corresponding to the indoor side opening 43, so that the outside air introduced from the air supply passage 45 can be more efficiently introduced into the room. The air introduction hole 23 may be formed on the entire surface of the cover portion 20.

As described above, the air supply regulator to which the present utility model is applied can be easily constructed and the filter can be easily replaced, and fresh air can be always introduced into the ventilation target space.

Third embodiment

Next, a gas supply regulator 1b according to a third embodiment of the present utility model will be described with reference to fig. 6. In the following description, the same reference numerals are given to the same components as those of the other embodiments, and overlapping description is omitted.

In the third embodiment, the sound absorbing material 80 is provided on the back surface side of the cover portion 20 at a position substantially corresponding to the indoor side opening 43, as compared with the first embodiment. The sound absorbing material 80 is a porous sound absorbing material, and is suitably selected from, for example, glass wool, polyurethane sponge material, felt, or the like. The sound absorbing material 80 has an area larger than the opening area of the indoor opening 43 by a predetermined amount in front view, for example.

In general, when outside air flows into the room through the air supply passage 45, wind noise is generated when the outside air passes through the air supply passage 45, but by providing the sound absorbing material 80 on the rear surface side of the cover 20, the wind noise when the outside air is introduced can be attenuated by the sound absorbing material 80.

In the case where the front filter 60 is provided in front of the sound absorbing material 80 (on the main body 10 side), wind noise generated when outside air is introduced is first attenuated by the front filter 60. Then, the wind noise transmitted through the front filter 60 is attenuated by the sound absorbing material 80, and further attenuated by the side filter 30.

In particular, since the cover 20 has a larger area than the front filter 60 (the main body 10) when viewed from the front, wind noise passing through the front filter 60 is emitted radially along the inside wall surface 41 between the inside wall surface 41 and the cover 20. Therefore, the wind noise attenuated by the sound absorbing material 80 or the like can be prevented from being directly transmitted to the room as it is, and therefore, the attenuation effect of the wind noise can be further improved. In addition, since the same attenuation effect can be obtained for the indoor sound leaking from the indoor to the outdoor through the air supply regulator 1b, the leakage of the indoor sound to the outside is prevented, and the present utility model is also effective from the viewpoint of protecting privacy.

Here, the area of the sound absorbing material 80 when viewed from the front does not necessarily need to be larger than the opening area of the indoor opening 43 by a predetermined amount, but by making it larger than the opening area of the indoor opening 43 by a predetermined amount, wind noise when outside air is introduced can be absorbed over a wide range, and therefore the attenuation effect of wind noise can be further improved.

Further, the front filter 60 is not necessarily required, but the front filter 60 is provided on the front side (upstream side of the outside air) of the sound absorbing material 80 to effectively attenuate wind noise, and the sound absorbing material 80 is prevented from being directly exposed to harmful substances such as dust, pollen, and PM2.5 contained in the outside air, or raindrops, so that deterioration of the sound absorbing material 60 can be prevented.

The above description has been made on the premise that the air supply regulator according to the embodiment of the present utility model is provided on the wall surface that separates the external space from the internal space, but the air supply regulator may be provided on the wall surface that separates the internal space, so that air is introduced from one living room space that has been ventilated to another living room space that needs ventilation.

As described above, the air supply regulator of the present utility model is easy to construct and replace the filter, and can always introduce fresh air into the ventilation target space.

Description of the reference numerals

1. 1a, 1b air supply regulator

10 main body part

11 first frame

111 flange face

112 through hole

113 fixing hole

12 second frame

121 frame portion

122 clamping hole

13 connecting member

14 air introduction path

20 cover part

21 clamping piece

22 base station

23 air inlet hole

30 side face filter

40 wall surface

41 roof inner side wall surface

42 outdoor side wall

43 indoor side opening

44 outdoor side opening

45 air supply passage

50 pipe

60 front face filter

70 shutter

80 sound absorbing material.

Claims

1. An air supply regulator, comprising:

a main body portion including a first frame body including a flange portion formed with a through hole having a size substantially corresponding to an air supply passage formed through a wall surface of a building, and a second frame body including a frame portion fixed to the first frame body via a coupling member so as to face the first frame body, so as to form an air introduction passage formed by a predetermined gap between the second frame body and the first frame body;

a cover portion formed of a plate-like body having a size that covers the entire body portion when viewed from the front; and

a side surface filter detachably provided along a side surface of the main body so as to cover the air introduction path,

the surface of the main body is heat-insulated.

2. The air supply regulator of claim 1, wherein,

a fixing hole through which a fixing member can be inserted is formed in the first housing around the through hole.

3. The air supply regulator according to claim 1 or 2, wherein,

the side surface filter is composed of 1 of copper oxide, silver oxide, iron oxide, and manganese oxide.

4. The air supply regulator according to claim 2, wherein,

the fixing hole is a long hole formed from a predetermined position of the peripheral edge of the first housing toward the through hole.

5. The air supply regulator according to claim 1 or 2, wherein,

the second housing has a front filter that covers the second housing when viewed from the front.

6. The air supply regulator according to claim 1 or 2, wherein,

an engagement hole is formed at a predetermined position of the frame portion of the second housing,

an engagement piece engageable with the engagement hole is provided on one side of the cover portion.

7. The air supply regulator according to claim 1 or 2, wherein,

the cover portion is formed with a plurality of air introduction holes penetrating from one side to the other side for introducing air introduced from the air supply passage into the room.

8. The air supply regulator according to claim 1 or 2, wherein,

a sound absorbing material is provided on one side of the cover portion at a position substantially corresponding to the indoor side opening portion.

9. The air supply regulator of claim 8, wherein,

the sound absorbing material has a predetermined size larger than an opening area of the air supply passage when viewed from the front.