JPH0814622A - Simultaneous air supply and exhaust type ventilator - Google Patents

Abstract

PURPOSE:To enhance safety and to reduce noise without using a motor and a blade. CONSTITUTION:An outdoor side venturi 5 of the shape similar to a flared indoor side venturi 4 is adjacently disposed at an enlarged side opening end in a pressure chamber 3. U-shaped air supply orifice 10 and exhaust orifice 13 are respectively installed at the venturis 5 and 4. A supply air vent passage 7 and an exhaust air vent passage 8 of reverse directions are provided to conduct induction air supply due to the diffusion of pressurized air 21, thereby simultaneously supplying and exhausting the air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simultaneous supply / discharge type ventilator mainly used for ventilation of houses and the like.

[0002]

2. Description of the Related Art Conventionally, a ventilator for simultaneously supplying and discharging air is basically constructed by combining an air blower consisting of an electric motor and blades to blow indoor and outdoor air.

The structure of the first conventional example will be described below with reference to FIG. As shown in the figure, an electric motor 102 is provided inside a box-shaped main body 101, and an air supply blade 104 and an exhaust blade 105 are fixedly engaged with a drive shaft 103 protruding from both sides of the electric motor 102. Cage,
These are housed in the air supply casing 106 and the exhaust casing 107, which have the functions of rectifying and preventing mixed flow, respectively. In addition, the air supply casing 106 and the exhaust casing 107 include the inside 108 side and the outside 10
It is connected to the 9 side by a duct, but recently, for the purpose of improving workability, the duct is divided into two layers to form a two-layer duct 110. That is, the air supply passage 111A of the indoor two-layer duct 110A and the air supply passage 111B of the outdoor two-layer duct 110B are connected to the air supply casing 10.
6, the exhaust passage 112A of the indoor two-layer duct 110A and the exhaust passage 112B of the outdoor two-layer duct 110B are connected to the exhaust casing 107 so as to communicate with each other.

Then, by driving the electric motor 102, that is, the drive shaft 103 by energization to rotate the exhaust blade 105 and the air supply blade 104, fresh air outside the room is supplied into the room through the air supply path 111. The polluted air in the room was discharged to the outside through the exhaust passage 112.

However, when such a conventional ventilation device is installed in the ceiling, electrical wiring work for driving the electric motor is required in advance, and there are many electric handling problems such as electric leakage and ignition, which is a safety factor. Meticulous attention was required. Moreover, since the blades are rotated to blow air, there is a problem that it becomes a source of noise such as rotation noise and turbulent noise, which hinders noise reduction.

Therefore, as a ventilator which does not use an electric motor or a blade which is a source of noise, a ventilator disclosed in JP-A-62-58100 has been proposed.

The configuration of the second conventional example will be described below with reference to FIG. As shown in the figure, 201 is an induction blower, which is a trumpet-shaped venturi 205 in which a conical cylinder part 203 and a cylindrical part 204 are smoothly connected, and a venturi 205 is located inside an opening end of the conical cylinder part 203 side. Then, an orifice 206 that forms an annular gap C between the outer peripheral portion and the conical tubular portion 203, and a box shape that fixes the orifice 206 and forms a space portion 207 on the outer periphery of the orifice 206 and the venturi 205. Of the pressure chamber 202, and a blower for supplying the compressed air 210 into the pressure chamber 202 through a connection pipe 209 connected to the space 207 and connected to a pressurized air inlet 208 formed outside the pressure chamber 202 (see FIG. (Not shown) and a ventilator. Then, the suction port 211 of the orifice 206 is communicated with, for example, the inside of the room using the indoor side duct 212, and the discharge port 213 of the venturi 205 is connected with the outdoor side and the outdoor side duct 214.
Pressurized air that has been communicated using
When 10 is sent into the pressure chamber 202, the pressurized air 210 has its wind speed increased when passing through the annular gap C, and is blown out toward the discharge port 213 inside the venturi 205. As a result, an attracting action is generated inside the venturi 205 and the inside of the orifice 206, and the air in the room is sucked through the suction port 211, passes through the inside of the orifice 206 and the venturi 205, and is discharged to the outside from the discharge port 213.

When this ventilation device is used for simultaneous air supply / exhaust, as shown in FIG. 7, two induction blowers 201A, 201B are installed for air supply or exhaust,
Connecting pipes 209A and 209B are connected to each, and indoor ducts 212A and 212B and outdoor ducts 214A and 214B are respectively connected to supply fresh air outdoors and discharge polluted air indoors. It was

[0009]

When such a conventional ventilator (described later) is used, it is possible to use two ventilation fans for two induction blowers.
There is a problem that a book connecting pipe is required, an excessive increase in equipment cost is caused due to each duct piping, workability is poor, and time is wasted.

The present invention solves the above-mentioned problems, and can supply and exhaust air at the same time without using an electric motor or blades.
A first object of the present invention is to provide a simultaneous supply / discharge type ventilation device that has high workability and can minimize equipment costs.

A second object is to adjust the flow rates of the supply air and the exhaust gas individually to make it possible to obtain a ventilation amount suitable for the usage situation and purpose.

[0012]

In order to achieve the above-mentioned first object, the first aspect of the present invention is to provide a trumpet-shaped indoor venturi and an outdoor venturi on mutually enlarged sides. Arranged so that the openings are opposed to each other and the enlarged-side opening ends are adjacent to each other, and the inside and outside of these venturis are axially divided by a partition plate into an air supply ventilation passage and an exhaust ventilation passage, and a supply / exhaust cylinder portion, It is provided on the air supply ventilation path side of the expansion side opening of the outdoor side venturi, and between the outer peripheral part and the inner peripheral surface of the expansion side opening of the indoor side venturi, the reduction side opening end side of this indoor side venturi. And a substantially U-shaped air supply orifice that forms a first slit that is inclined in the central axis direction of the indoor venturi, and is provided on the exhaust ventilation passage side of the expansion side opening of the indoor venturi,
Between the outer peripheral portion and the inner peripheral surface of the expansion-side opening of the outdoor venturi, the second slit that is inclined toward the contraction-side opening end of the outdoor venturi and in the central axis direction of the outdoor venturi. And a substantially U-shaped exhaust orifice forming
A pressure chamber that surrounds the outer peripheries of the indoor venturi and the outdoor venturi and communicates with the first and second slits, and pressurized air through a connection pipe to a pressurized air inlet provided in the pressure chamber. And a compressed air supply device for supplying the compressed air to the indoor side venturi on the reduction side opening. The air supply ventilation passage and the exhaust ventilation passage on the end side are separately connected to the outside by a two-layer duct.

In order to achieve the second object,
The second means includes a first space portion communicating the pressure chamber of the first means with the first slit and a second space portion communicating with the second slit.
From the pressurized air supply device through connection pipes to the first pressurized air inlet and the second pressurized air inlet, which are provided so as to be communicated with these space portions. The control means for individually adjusting the amount of pressurized air supplied is provided.

[0014]

According to the present invention, by the constitution of the above-mentioned first means, the danger and the trouble of wiring due to using the electric motor can be saved.
It is possible to supply and exhaust air at the same time without using the blade of the noise source.

Further, with the configuration of the second means, the amount of pressurized air supplied to each of the divided space portions can be adjusted, and ventilation can be performed as necessary.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, inside a box-shaped pressure chamber 3 arranged in the ceiling 2 of the building 1, a trumpet-shaped indoor side venturi 4 and an outdoor side venturi 5 are provided with enlarged side openings. The venturis 4 and 5 are arranged so as to face each other and to have the opening ends on the enlarged side adjacent to each other.
An air supply / exhaust pipe portion 9 is formed by partitioning into an outer peripheral portion and an outer peripheral portion on the inner peripheral surface of the air supply ventilation passage 7 side of the expansion side opening of the outdoor venturi 5 of the air supply / exhaust pipe portion 9. Between the inner peripheral surface of the enlargement side opening of the indoor side venturi 4 and the reduction side opening end side of the indoor side venturi 4 and in the direction of the central axis of the indoor side venturi 4, the air supply ventilation passage 7 is provided. First slit 1 for communicating the inside of the pressure chamber 3 with the inside of the pressure chamber 3.
A substantially U-shaped air supply orifice 11 forming 0 is provided, and the inner peripheral surface of the expansion vent of the indoor side venturi 4 on the exhaust ventilation passage 8 side has its outer peripheral part and the outdoor venturi 5 side. Between the inner peripheral surface of the enlargement side opening and the side of the outdoor side venturi 5 on the contraction side opening end and in the direction of the central axis of the outdoor side venturi 5, the exhaust ventilation passage 8 is formed.
A substantially U-shaped exhaust orifice 13 that forms a second slit 12 that communicates with the inside of the pressure chamber 3 is provided.

A pressure air inlet 14 communicating with the inside of the pressure chamber 3 is provided on the outer peripheral portion of the pressure chamber 3.
Is provided, and the pressurized air inflow port 14 is an outdoor unit 15
It is connected to the pressurized air supply device 16 arranged on the side via a connecting pipe 17.

The air supply ventilation passage 7 and the exhaust ventilation passage 8 on the reduction side opening end side of the indoor side venturi 4 are separately connected to the indoor side 19 by the two-layer duct 18 and also on the outdoor side venturi. The air supply ventilation passage 7 and the exhaust ventilation passage 8 on the side of the reduction side opening end of 5 are separately connected to the outdoor 15 side by the two-layer duct 20.

In the above structure, the pressurized air supply device 16
When the pressurized air 21 pressurized by is sent into the pressure chamber 3 through the connecting pipe 17, the pressurized air 21 passes through the first slit 10 toward the room 19 side of the supply air passage 7, and Outdoor 1 of the exhaust ventilation passage 8 through the second slit 12
When passing through the first slit 10 and the second slit 12 toward the 5 side, the wind speed is increased and blown out, whereby the inside of the air supply ventilation passage 7 is exhausted to the outdoor 15 side and exhausted. Inside the ventilation passage 8, an attracting action for moving air to the room 19 side is individually generated, so that the dirty air 22 in the room 19 passes through the two-layer duct 18 and enters the exhaust ventilation passage 8 of the air supply / exhaust tube portion 9. Inhaled and double-layered duct 20
Through the two-layer duct 20, the fresh air 23 outside the room 15 is sucked into the air supply / ventilation passage 7 of the air supply / exhaust pipe part 9, and the two-layer duct 1
Air will be supplied to the room 19 through the route 8.

Next, the construction work of the simultaneous supply / discharge type ventilation device of the above construction will be described below. First, the pressurized air supply device 16 is installed on the outdoor 15 side, the connection pipe 17 is piped from there to the ceiling space 2, and the end portion of the connection pipe 17 is connected to the pressurized air inflow port 14 for communication. , Fix the pressure chamber 3. Next, the construction work is performed by performing a simple work of communicating the air supply ventilation passage 7 and the exhaust ventilation passage 8 of the air supply / exhaust cylinder 9 with the two-layer duct 18 and the two-layer duct 20 indoors and outdoors. Can be completed.

As described above, according to the simultaneous supply / discharge type ventilator of the first embodiment of the present invention, since installation of the simultaneous supply / discharge type ventilator does not require electric wiring work, the installation is extremely difficult. It is simple, and there is no danger of electric leakage or ignition, and noise can be greatly reduced because there are no blades in the ventilation passage. Moreover, since the duct piping for connecting the indoor 19 side and the outdoor 15 side can be completed by using the two-layer ducts 18 and 20, one for each of the indoor 19 side and the outdoor 15 side can be completed. The workability is greatly improved and the increase in cost can be suppressed.

Next, a second embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG.

The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, this embodiment is different from the first embodiment in that the pressure chamber 3 communicates with the first space 24 communicating with the first slit 10 and the second gap 12. A connection pipe 17A is connected to a first pressurized air inlet 14A which is divided into a second space 25 and is provided so as to communicate with the first space 24.
The connection pipe 17B is connected to the second pressurized air inflow port 14B that is connected to one end of the first space and is connected to the second space 25.
Connect one end of one of these and connect these connecting pipes 17A, 17B
Is characterized in that a control means 26 for individually adjusting the amount of pressurized air supplied from the pressurized air supply device 16 is provided at a branch portion connecting the other end of the connection pipe 17 and the connection pipe 17.

In the above structure, for example, when it is desired to quickly discharge the smoke of the cigarette floating in the room 19, the control means 2
6 is used to increase the amount of the exhaust pressurized air 21A, the amount of air blown into the exhaust ventilation passage 8 is increased, and the attraction effect is also increased accordingly. Therefore, the amount of exhaust is increased, and the outdoor 15 When it is desired to supply fresh air immediately, by increasing the amount of the supply air pressurized air 21B by using the control means 26, the amount of air blown into the supply air passage 7 increases, and accordingly, the attraction is increased. Since the effect is also increased, the air supply amount is increased, and therefore a fine ventilation amount can be set according to the sense of the user.

As described above, according to the simultaneous supply / discharge type ventilator of the second embodiment of the present invention, it is possible to adjust the ventilation amount according to the situation and purpose of ventilation, and perform appropriate supply / exhaust. You can

[0028]

As is apparent from the above embodiments, according to the present invention, the outside venturi having the same shape as the trumpet-shaped inside venturi is arranged adjacent to each other at the enlargement side opening end in the pressure chamber. The air supply orifice and the exhaust orifice are installed on the inner walls of the outdoor venturi and the indoor venturi, respectively, and ventilation paths are provided in directions opposite to each other, so that the intake air is blown out by the pressurized air to simultaneously supply and exhaust air. Therefore, when the induction blower is installed in a house, the induction blower uses the attracting action to supply or exhaust air, which saves the trouble of electrical wiring and greatly reduces the risk of electric handling. It is possible to provide a simultaneous supply / discharge type ventilator that is capable of reducing noise by removing the blades of the noise generation source, and has significantly improved workability. That.

Further, by providing a control means for adjusting the amount of pressurized air supplied to each of the divided space portions, it is possible to set the ventilation amount of the supply air and the ventilation amount of the exhaust gas, respectively. It is possible to provide a safe and quiet simultaneous supply / discharge type ventilation device capable of achieving a ventilation volume suitable for a purpose.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the configuration of a simultaneous supply / discharge type ventilation device according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing an installation state of the simultaneous supply / discharge type ventilation device of the first embodiment.

FIG. 3 is a sectional view showing the configuration of the simultaneous supply / discharge type ventilation device of the second embodiment.

FIG. 4 is a cross-sectional view showing an installed state of the simultaneous supply / discharge type ventilation device of the second embodiment.

FIG. 5 is a cross-sectional view showing the configuration of a conventional simultaneous supply / discharge type ventilator according to the first embodiment.

FIG. 6 is a cross-sectional view showing the configuration of the ventilation device according to the second embodiment.

FIG. 7 is a cross-sectional view showing a configuration in which the ventilation device of the second embodiment is of a simultaneous supply / discharge type.

[Explanation of symbols]

 3 Pressure Chamber 4 Indoor Venturi 5 Outdoor Venturi 6 Partition Plate 7 Air Supply Ventilation Path 8 Exhaust Ventilation Path 9 Air Supply / Exhaust Cylinder 10 First Gap 11 Air Supply Orifice 12 Second Gap 13 Exhaust Orifice 14 Pressurization Air inlet 14A First pressurized air inlet 14B Second pressurized air inlet 16 Pressurized air supply device 17 Connection pipe 17A Connection pipe 17B Connection pipe 18 Two-layer duct 20 Two-layer duct 24 First space portion 25 second space 26 control means

Claims (2)

[Claims] 1. A trumpet-shaped indoor-side venturi and an outdoor-side venturi are arranged such that their expansion-side openings face each other and their expansion-side opening ends are adjacent to each other, and the inside of these venturis is axially divided by a partition plate. An air supply / exhaust tube portion formed by partitioning into the air supply air passage and the exhaust air passage, and provided on the air supply air passage side of the expansion side opening of the outdoor venturi,
Between the outer peripheral portion and the inner peripheral surface of the expansion-side opening of the indoor venturi, the first slit that is inclined toward the contraction-side opening end of the indoor venturi and in the central axis direction of the indoor venturi. And a substantially U-shaped air supply orifice forming
It is provided on the exhaust ventilation passage side of the expansion side opening of the indoor side venturi, and between the outer peripheral part and the inner peripheral surface of the expansion side opening of the outdoor side venturi, the reduction side opening end side of the outdoor side venturi. And a substantially U-shaped exhaust orifice that forms a second slit that is inclined in the direction of the central axis of the outdoor venturi, and the outer circumference of the indoor venturi and the outdoor venturi and surrounds the first and second fine venturis. A pressure chamber communicating with the gap, and a pressurized air supply device for supplying pressurized air to a pressurized air inlet provided in the pressure chamber via a connecting pipe, and a reduction side opening end of the indoor venturi. Side air supply passage and exhaust air passage are separately provided by a two-layer duct, and the air supply ventilation passage and exhaust air passage on the reduction side opening end side of the outdoor venturi are provided by a two-layer duct. Separately made and communicates with the outdoor same hourly discharge type ventilator. 2. The pressure chamber is divided into a first space portion communicating with the first slit and a second space portion communicating with the second slit, and provided so as to communicate with these space portions. Control means for individually adjusting the amount of pressurized air supplied from the pressurized air supply device via the connecting pipe is provided at each of the first pressurized air inlet and the second pressurized air inlet. Item 1. A simultaneous supply / discharge type ventilation device according to item 1.