JP2004150778A - Ventilator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilator highly efficiently cleaning an outside air and taking it in a room with neither enlarging a ventilating fan body nor losing an air volume balance between a feed air and an exhaust air by reducing the feed air volume. <P>SOLUTION: This ventilator comprises a feed air blower 3 having a suction port side communicated with the outdoors 16 via an outside air intake duct 19 and a delivery port side communicated with a feed air blowoff port 12 opened to a room inside 111 via an air feed duct 10, the ventilating fan body 2 having a delivery port side communicated with the outdoors 16 via an exhaust duct 15 and a suction port side communicated with an exhaust air intake port 14 opened to the room inside 11 via an exhaust air intake duct 13, and an outside air purification device 18 incorporating an outside air purification filter 23 and an auxiliary air blower 24 and provided between the feed air blowoff port 12 and the outdoors 16. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ventilator for purifying outside air and taking it into a room, and discharging dirty air from the room.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a ventilator of this type is known that introduces outside air into each room of a dwelling via a dust collecting filter and a heat exchange element and discharges dirty air in the room. (For example, refer to Patent Document 1.) Hereinafter, the ventilation device will be described with reference to FIGS.
[0003]
As shown in FIGS. 5 and 6, an exhaust air inlet 103 installed in the ceiling 101 and opened to the room 102 on the lower surface, and an outlet grill 104 and an air supply duct 105 provided in a plurality of rooms and opened. A plurality of supply air outlets 106 communicating with each other, and an exhaust air outlet 110 and an air supply inlet 111 connected to an exhaust duct 108 and an outside air intake duct 109 communicating with the outside 107 are provided on side surfaces. A ventilation fan body 112 is provided with an exhaust blower 113 and an air supply blower 114, and the ventilation fan body 112 has an exhaust air taken in from the exhaust air intake 103 and a supply air taken in through the outside air intake duct 109. The heat exchange element 115 provided to recover exhaust heat between the air and the air, and the outside air intake side of the heat exchange element 115 removes dust and the like in the outside air. It has been provided and the dust filter 116.
[0004]
Further, as this type of ventilator, there is a ventilator provided with a filter box having a built-in dust collecting filter in an air supply passage. However, there is no prior art information to be described because such prior art does not relate to the invention disclosed in the literature. Hereinafter, the ventilation device will be described with reference to FIGS. 7 and 8.
[0005]
As shown in FIG. 7 and FIG. 8, ventilation holes 117 are provided on both sides to which the outside air intake duct 109A on the ventilation fan side and the outside air intake duct 109B on the outdoor side are connected, respectively, and form a part of the air supply flow path. A dust collecting filter 119 is detachably provided inside a filter box 118 installed in the ceiling 101.
[0006]
[Patent Document 1]
JP-A-11-141947 (FIGS. 1 and 2)
[0007]
[Problems to be solved by the invention]
As described above, in the conventional ventilation device, the dust collection filter in the ventilation fan body generally uses a filedone filter (coarse dust filter) to remove large dust and pollen in the outside air taken into the room. However, in recent years, fine dust such as SPM (suspended particulate matter) in exhaust gas from diesel vehicles, which causes asthma and has become a social problem because it contains carcinogens, cannot be almost removed. For this purpose, it is required to further improve the dust collection performance of the dust collection filter.However, in general, the pressure loss at the filter part increases with the improvement of the dust collection performance, and in order to secure a predetermined supply air volume, the ventilation fan must be installed. There is a problem that the air supply blower becomes large.
[0008]
On the other hand, in order to reduce the pressure loss in the filter portion, it is necessary to secure a large filter area, and in this case, there is a problem that the filter mounting space is increased.
[0009]
A similar problem also occurred when a filter box was installed separately in the air supply passage of the ventilation system.However, if the air supply volume of the ventilation system was different, the pressure loss in the filter box would be different. The design (setting and adjustment of air volume) is difficult, and the balance between the supply air volume and the exhaust air volume differs greatly between when the filter box is installed and when it is not installed. In a case where the user wants to clean and take in the room or add a filter box, there is a problem that a desired ventilation air volume cannot be obtained.
[0010]
The present invention is to solve such a conventional problem, without increasing the size of the ventilation fan body, or without reducing the supply air flow and breaking the air supply and exhaust air flow balance, to supply air into the supply air It is an object of the present invention to provide a ventilation device that cleans outside air with high performance and takes it into a room so that contained SPM (suspended particulate matter) can be removed.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, the ventilation device of the present invention is configured such that the suction port side communicates with the outside through an outside air intake duct, and the discharge port side opens to a supply air outlet that opens to the room through an air supply duct. An air supply blower communicating with the air supply, and an exhaust air blower having a discharge port communicating with the outside through an exhaust duct and an intake port communicating with an exhaust air intake opening into the room through an exhaust air intake duct are provided. It is characterized by comprising a ventilation fan body, an outside air purification filter and an auxiliary blower, and comprising an outside air purification device provided outside the ventilation fan body and between the outside and the air supply outlet.
[0012]
Further, the ventilator of the present invention has a feature that the structure from the NO _x filter capable of removing dust collecting filter and NO _x for the fine dust collecting having a function of more than medium performance outside air cleaning filter.
[0013]
Further, the ventilation device of the present invention is characterized in that the auxiliary blower of the outside air purification device is provided with a speed adjusting means.
[0014]
Further, the ventilating apparatus according to the present invention is characterized in that the outside air purifying apparatus is installed on an indoor wall surface.
[0015]
Further, the ventilating apparatus of the present invention is characterized in that a control means capable of simultaneously turning on and off the operations of the air supply blower, the exhaust blower, and the auxiliary blower is provided.
[0016]
Further, the ventilating apparatus according to the present invention is characterized in that the outside air purifying apparatus is installed outdoors.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention of the ventilator according to claim 1 is an air supply blower in which the suction port side communicates with the outside through an outside air intake duct, and the discharge port side communicates with a supply air outlet that opens to the room through an air supply duct. And a ventilation fan body having an exhaust blower having a discharge port communicating with the outside through an exhaust duct and an intake port communicating with an exhaust air intake opening into the room through an exhaust air intake duct. An external air purification device including a filter and an auxiliary blower is provided, and the external air purification device is provided outside the ventilation fan main body and between the outdoor and the air supply outlet, thereby being provided in the external air purification device. The outside air purifying filter can remove contaminants in the outside air, and the auxiliary blower can generate pressure equivalent to the pressure loss of the outside air purifying filter to cancel the loss. The present invention provides a ventilator in which the supply air and the exhaust air are balanced without increasing the size of the supply fan of the ventilation fan or reducing the supply air even at the time of high pressure loss due to the high performance of the fan. be able to.
[0018]
Invention of the ventilation device according to claim 2 constitute from the NO _x filter particular outside air cleaning filter of claim 1, wherein can be removed dust collecting filter and NO _x for the fine dust collecting with medium performance more functions since it is, even if outdoor air is not contaminated by diesel exhaust, prevents the diesel SPM (suspended particulate matter) contained in the exhaust gas and NO _x is indoor penetration, good respiratory diseases such as asthma You can create an environment that affects you.
[0019]
The invention of the ventilating device according to the third aspect of the present invention provides the same external air flow even when the air supply amount of the ventilating device is different due to the provision of the speed adjusting means in the auxiliary blower of the external air purifying device of the first or second aspect. It is possible to provide a ventilation device capable of coping with effectively eliminating different pressure losses of the outside air cleaning filter unit by changing the operation speed of the auxiliary blower in the purification device.
[0020]
According to the invention of the ventilating device according to claim 4, in particular, by installing the outdoor air purifying device according to claim 1, 2, or 3 on the indoor wall surface, maintenance such as replacement of an external air cleaning filter is performed in an open space lower than the ceiling. And a ventilation device that facilitates maintenance work can be provided.
[0021]
According to the invention of the ventilating device according to claim 5, since the ventilating device according to claim 1 or 4 is provided with control means capable of simultaneously turning on and off the operations of the air supply blower, the exhaust blower, and the auxiliary blower, It is possible to provide a ventilation device that does not require the trouble of separately turning on and off the operation of the ventilation fan main body and the outside air purification device at the time of maintenance of the ventilation fan main body and the outside air cleaning filter or at the time of abnormality.
[0022]
According to the invention of the ventilating device according to claim 6, in particular, by installing the outdoor air purifying device according to claim 1 outdoors, maintenance such as replacement of an external air purifying filter can be performed in an outdoor open space. Since the operating noise of the cleaning device is hardly transmitted to the indoor side, it is possible to provide a ventilation device in which the operating noise of the outside air cleaning device is not bothersome in the living room.
[0023]
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0024]
(Embodiment 1)
As shown in FIG. 1, a ventilation fan main body 2 installed in a ceiling 1 of a house has an air supply blower 3, an exhaust blower 4, and a heat exchange element 5 inside the ventilation fan main body 2. An air supply intake vent 6 communicating with the suction port side of the air blower 3, communicates with the discharge port side of the exhaust blower 4 via the heat exchange element 5, and communicates with the outside 16 via the exhaust duct 15. It has an exhaust blow-out vent 7 which performs exhaust. On the other side, a supply air outlet vent 8 communicating with the discharge port side of the supply air blower 3 via the heat exchange element 5 and communicating with the room 11 via the supply air duct 10, and an exhaust blower 4 has an exhaust intake vent 9 which communicates with the suction port side and communicates with the room 11 via an exhaust air intake duct 13.
[0025]
An air supply duct 10 is connected to the air supply outlet 8, and an air supply outlet 12 opening into the room 11 is provided at an opposite end of the air supply duct 10. An air intake duct 13 is connected, and an exhaust air intake port 14 opened to the room 11 is provided at the opposite end of the exhaust air intake duct 13. An exhaust duct 15 is connected to the exhaust outlet 7, and an exhaust hood 17 that is open to the outdoors 16 is provided at the opposite end of the exhaust duct 15.
[0026]
An outside air intake duct 19 provided with an outside air purification device 18 in the middle of the flow path is connected to the air intake intake vent 6, and an air supply hood 20 opened to the outdoors 16 at the opposite end of the outside air intake duct 19. Is provided. The outside air purification device 18 has ventilation holes 21 on both sides of the box for connection of the outside air intake duct 19, forms a part of a flow path for taking outside air into the room 11, and has a ceiling surface inside. And an auxiliary air blower 24 which is removably attached by opening an inspection port 22 provided in the air conditioner.
[0027]
The air flow when operating the ventilator is as follows. The outside air taken in from the air supply hood 20 by the operation of the air supply blower 3 is taken into the ventilation fan main body 2 through the outside air purification device 18, and is supplied from the air supply outlet 12 to the room 11 through the air supply duct 10. Is formed. On the other hand, the air in the room 11 taken in from the exhaust air intake 14 by the operation of the exhaust blower 4 is taken into the ventilation fan main body 2 from the exhaust air intake 15 through the exhaust air intake duct 13, and exhausted through the exhaust duct 15. An exhaust passage having a flow of being discharged from the hood 17 to the outside 16 is formed. Further, in the heat exchange element 5, heat is exchanged between the supply air of the supply air blower 3 and the exhaust air of the exhaust blower 4, thereby recovering the heat of the room 11, thereby reducing the indoor cooling and heating load. .
[0028]
Also, when a desired air volume is supplied to the outside air cleaning filter 23 during operation of the ventilator, a pressure loss occurs before and after the outside air cleaning filter 23, and the pressure loss leads to a decrease in the supply air volume of the ventilation device. By operating the auxiliary blower 24, an airflow in the same direction as that of the air supply fan 3 is created by operating the auxiliary air blower 24 so that the air supply amount does not decrease even if the device 18 is added to the main ventilator. Pressure will be generated.
[0029]
In addition, since the outside air purification device 18 has the auxiliary blower 24 that compensates for the pressure loss of the outside air purification filter 23, even when the performance of the outside air purification filter 23 is improved, the ventilation fan is increased due to the increase in the pressure loss of the outside air purification filter 23. There is no need to increase the blowing capacity of the air supply blower 3 of the main body 2 or to secure a space for mounting the outside air cleaning filter 23 in the ventilation fan main body 2 which increases due to an increase in the area of the outside air cleaning filter 23. A sufficient supply space can be secured, and a desired supply air volume can be secured by increasing the blowing capacity of the auxiliary blower 24.
[0030]
As described above, according to the ventilation device of the first embodiment of the present invention, the outside air purifying device 18 is provided in the air supply flow path between the suction port side of the air supply blower 3 and the outdoor 16 separately from the ventilation fan main body 2. Since the outside air purifying device 18 incorporates the outside air purifying filter 23 and the auxiliary blower 24, even when the pressure loss is increased due to the high performance of the outside air purifying filter 23, the size of the air supply fan 3 of the ventilation fan main body 2 can be reduced. Alternatively, it is possible to provide a ventilation device in which the supply air and the exhaust air are balanced without reducing the supply air.
[0031]
In the present embodiment, the outside air purification device 18 is provided between the ventilation fan main body 2 and the air supply hood 20 in the air supply flow path. It has a function and effect.
[0032]
(Embodiment 2)
As shown in FIG. 2, constituted by NO _x filter 23b capable of removing dust collecting filter 23a and NO _x in medium performance than for fine dust trapping ambient air cleaning filter 23 of the outside air purifier 18A, a plurality of auxiliary blowers 24a A speed adjusting means is provided with a speed adjusting function of the stage, and a speed changeover switch 25 for changing the speed is provided in the outside air purification device 18A. Further, the same components as those in FIG.
[0033]
In the above configuration, the operation of the ventilator, when the outside air is taken into the chamber 11 through the air supply channel, in order to pass through the dust collecting filter 23a and NO _x filter 23b, SPM etc. (suspended particulate matter) and NO _x removal The clean air supplied is supplied to the room.
[0034]
When the desired supply air volume of the ventilation device is large, the operation speed of the auxiliary blower 24a is increased, and when the desired supply air volume is small, the operation speed of the auxiliary blower 24a is reduced, or When the type of the cleaning filter 23 is of a higher performance and a higher pressure loss type, when the operation speed of the auxiliary blower 24a is increased or the like, the operation of the changeover switch 25 causes the different pressure loss of the outside air cleaning filter 23 to differ. , And the operation speed of the auxiliary blower 24a can be changed so that a desired supply air volume can be effectively secured.
[0035]
According to the ventilator according to the second embodiment of the present invention, even if the air outdoors 16 is not contaminated by diesel exhaust, SPM (suspended particulate matter) contained in the diesel exhaust gas or NO _x room 11 It is possible to create an environment that does not invade the body and has a favorable effect on respiratory diseases such as asthma.
[0036]
In addition, since the auxiliary blower 24a is provided with a speed adjusting means, even when the amount of air supplied to the ventilation fan body 2 is different, the operating speed of the auxiliary blower 24a is changed in the same outside air purifying device 18A to change the outside air cleaning filter 23. It is possible to effectively cancel out different pressure losses, and even if the pressure loss of the filter section changes due to the difference in the type of the outside air cleaning filter 23, the same ventilation fan body 2 is used to secure a desired supply air volume. Can be.
[0037]
(Embodiment 3)
As shown in FIG. 3, the outside air purification device 18B is installed on the indoor wall surface 26, and a switch 27 is provided as a control means capable of simultaneously turning on and off the operations of the air blower 3, the exhaust blower 4, and the auxiliary blower 24. Configure the ventilation system. In addition, the same components as those in FIG.
[0038]
In the above configuration, by installing the outside air purification device 18B on the indoor wall surface 26, the outside air purification filter 23 can be cleaned or replaced in an open space lower than the ceiling 1, and the auxiliary blower 24 can be repaired. Work becomes easy.
[0039]
Further, the operation of the air supply fan 3, the exhaust fan 4 and the auxiliary fan 24 can be simultaneously turned on and off by the switch 27, so that the ventilation fan body 2 and the outside air Maintenance work is facilitated without the need to separately switch the purifier 18B on and off.
[0040]
(Embodiment 4)
As shown in FIG. 4, an outside air purification device 18C is provided on an outdoor wall surface 28 to constitute a ventilation device. In addition, the same components as those in FIG.
[0041]
An outside air inlet 29 is provided on the outer surface of the outside air purification device 18C, an outside air purification filter 23 is provided on a suction port side of an auxiliary blower 24 built in the outside air purification device 18C, and a discharge port side is connected to the ventilation port 21. It is configured to communicate with the air supply intake vent 6 of the ventilation fan main body 2 installed in the ceiling 1 via the outside air intake duct 19a.
[0042]
In the above configuration, since the outside air purifying device 18C is installed outdoors 16, maintenance such as replacement of the outside air purifying filter 23 can be performed in the open space of the outdoors 16 and the workability of the maintenance is improved. Since the operation sound of the device 18C is less likely to be transmitted to the room 11 side, it is possible to provide a ventilation device in which the operation sound of the outside air purification device 18C is not bothersome in the living room.
[0043]
【The invention's effect】
As described above, according to the ventilating device of the present invention, the air supply side is connected to the outside through the outside air intake duct through the intake port side, and the supply side is communicated to the air supply outlet opened into the room through the air supply duct through the air supply duct. A ventilation fan body having an air blower and an exhaust blower having a discharge port side communicating with the outside through an exhaust duct and a suction port side communicating with an exhaust air intake port opened to the room through an exhaust air intake duct; , An external air purifying filter and an auxiliary blower, and an external air purifying device provided outside the ventilation fan main body and between the outdoor and the air supply outlet, so that the performance of the external air purifying filter is improved. Can be.
[0044]
Further, since the configuration from the NO _x filter capable of removing dust collecting filter and NO _x for the fine dust collecting having a function of more than medium performance outside air cleaning filter, an environment that gives a positive impact on respiratory diseases such as asthma I can make it.
[0045]
In addition, by providing the speed adjustment means in the auxiliary blower of the outside air purification device, it is possible to improve the performance of the outside air purification filter without increasing the size of the ventilation fan body or reducing the amount of supplied air. .
[0046]
Further, the maintenance work is facilitated by installing the outside air purification device on the indoor wall surface.
[0047]
In addition, a control means that can simultaneously turn on and off the operation of the air supply fan, exhaust fan, and auxiliary fan is provided, so that the ventilation fan body and the outside air purification device are There is no need to switch off and on.
[0048]
In addition, since the outside air purification device is installed outdoors, maintenance work is facilitated, and a ventilation device in which the operation noise of the outside air purification device is not bothersome in the living room can be provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a ventilation device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating a ventilation device according to a second embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating a ventilation device according to a fourth embodiment of the present invention. FIG. 5 is a cross-sectional view illustrating a configuration of a ventilation fan main body in a conventional ventilation device. FIG. 7 is a perspective view showing a state in which another conventional ventilation device is installed in a building. FIG. 8 is a cross-sectional view showing the same ventilation device.
2 Ventilation fan body 3 Air supply blower 4 Exhaust air blower 10 Air supply duct 11 Room 12 Air supply outlet 13 Exhaust air intake duct 14 Exhaust air intake 15 Exhaust duct 16 Outdoor 18 Outside air purification device 18A Outside air purification device 18B Outside air purification device 18C ambient air purification device 19 outside air intake duct 23 outside air cleaning filter 23a dust collecting filter 23b NO _x filter 24 auxiliary blowers 24a auxiliary blowers 26 chamber wall

Claims (6)

An air supply blower whose inlet side communicates with the outside through an outside air intake duct and an outlet side communicates with an air supply outlet that opens into the room through an air supply duct, and an outlet side with an exhaust air duct through an exhaust duct A ventilation fan body provided with an exhaust blower communicating with the exhaust air intake opening to the interior of the room through an exhaust air intake duct through the exhaust air intake duct, an outside air cleaning filter and an auxiliary blower, A ventilating device comprising an outside air purifying device provided between the outside and the air supply outlet. Ventilation device according to claim 1, wherein the configuring from the NO _x filter capable of removing dust collecting filter and NO _x for the fine dust collecting having a function of more than medium performance outside air cleaning filter. The ventilation device according to claim 1 or 2, wherein a speed adjusting means is provided in the auxiliary blower of the outside air purification device. 4. The ventilation device according to claim 1, wherein the outside air purification device is installed on an indoor wall surface. The ventilation device according to claim 1 or 4, further comprising a control means capable of simultaneously turning on and off the operations of the air supply blower, the exhaust blower, and the auxiliary blower. The ventilation device according to claim 1, wherein the outside air purification device is installed outdoors.

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