JPH08145422A - Induction-type ventilator - Google Patents

Abstract

PURPOSE: To provide an induction type ventilator which enables the setting of the optimum amount of ventilation air to achieve a stable ventilation regardless of any change in the area and shape of a room involved and the number and activity of persons living in the room. CONSTITUTION: A fixed nozzle 3 is provided to jet pressure air 20 into a main duct 1 forming an air path for communication between the outside 18 and inside 15 of a room so that the air in the main duct 1 is induced to the side of a discharge port 14 and is provided with a mobile nozzle 5 free to slide to adjust the amount of ventilation air by moving the position of a jetting port 4 of the mobile nozzle 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction ventilator mainly used for ventilation of houses and the like.

[0002]

2. Description of the Related Art Conventionally, the action of inducing pressurized air from the surrounding air has been widely known and widely used in the industrial field as well, especially in the field of air conditioning equipment, and various products have been devised and used. It has been.

On the other hand, although the airtightness of houses has been increasing, the need for ventilation has increased as a result, and in order to realize more comfortable ventilation with low noise, electric motors and blades, which are sources of noise, have been developed. Inspiratory ventilators that do not use air have attracted attention.

The structure of a conventional induction ventilator will be described below with reference to FIGS. 9 and 10.

As shown in the figure, the ventilation device main body 101 has a tubular shape arranged on the ceiling 102, and a throttle portion 103 whose inner diameter is reduced is formed in a part of the tubular portion. At one end of the room 1
05 is connected to the first duct 106, and the other end is connected to a second duct 109 which penetrates the outer wall 107 and communicates with the outdoor 108. Device body 101, first duct 106
Further, the second duct 109 forms an exhaust passage 116 connecting the room 105 and the room 108.

Further, inside the ventilation device main body 101, a wall portion of the first duct 106 is penetrated to blow the air duct 110.
One end of is projected, and at the tip of this end,
A nozzle 112 is provided in which the ejection port 111 faces the narrowed portion 103 side. The other end of the blower duct 110 is connected to the blower fan 113 installed outside the room 108. Further, a control switch 114 for operating and stopping the blower fan 113 and switching an operation notch is provided on the indoor wall surface 115, and the control switch 114 and the blower fan 113 are connected to the power cord 11.
7 is connected.

In the above structure, the blower fan 113
When the pressurized air 118 is blown from the jet port 111 of the nozzle 112 through the blower duct 110, the air inside the ventilation device main body 101 is attracted to the second duct 109 side, and this attracting action is generated. By
Dirty air 119 in the room 105 is sucked in through the suction port 120 of the first duct 106, passes through the first duct 106, and flows into the ventilation device main body 101. The gas passes through the duct 109 and is discharged to the outside 108. Further, when rapid ventilation is required, if the strong notch of the control switch 114 provided on the indoor wall surface 115 is selected, the blown air amount of the pressurized air 118 from the blower fan 113 increases, and the blower duct 110 passes through the blower duct 110. Jet 1 of nozzle 112
The pressurized air 118 increased from No. 11 is injected, and the attracting action of the air inside the ventilator main body 101 to the second duct 109 side is increased. Air 1
The exhaust amount of 19 increases, flows into the inside of the ventilation device main body 101 through the first duct 106, passes through the second duct 109 together with the pressurized air 118, and is discharged to the outside 108.

[0008]

In such a conventional induction ventilator, the ventilator body 101 is installed in the ceiling 10 of various rooms 105 regardless of whether it is a collective house or a detached house.
The optimum ventilation air volume in the room 105 differs depending on the area, shape and orientation of the room 105, or the installation location of the ventilation device main body 101. Although the operation notch is operated to secure the optimum ventilation air volume, in general, the operation notch of the control switch 114 is often of a switching type having three stages or so, and therefore it is extremely difficult to maintain an appropriate ventilation air volume with fine texture. However, even if the induction ventilator is operated, there is a problem that the carbon dioxide concentration increases due to dew condensation or poor ventilation, or the heating and cooling load increases especially in summer and winter.

The present invention is intended to solve the above-mentioned problems. According to the size and shape of the room in which the induction ventilator is installed, the ventilation air volume is different. A first object is to provide an induction ventilation device that can be set.

The second object is to improve the controllability of the ventilation air volume. The third purpose is to further improve the controllability of the ventilation air volume.

A fourth object is to prevent the outside air from entering the room through the ventilation passage and causing a harmful effect such as cold draft.

A fifth object is to prevent an increase in the indoor heating and cooling load due to ventilation, and to prevent an uncomfortable feeling due to a large change in the indoor temperature and humidity.

[0013]

In order to achieve the above-mentioned first object, the induction ventilator of the present invention has a first means, one end of which is a discharge port and the other end of which is a suction port. A cylindrical shape having a narrowed portion whose inner diameter is reduced toward the discharge port side, the discharge port is outdoors and the suction port is indoors, or the discharge port is indoors and the suction port is outdoor. A main body duct which communicates with each other to form a ventilation path, and which is provided inside the main body duct, ejects pressurized air from the suction port side toward the throttle portion side, and the air in the main body duct to the discharge port side. A nozzle having an ejection port for inducing and a pressurized air supply device for supplying pressurized air to the nozzle are provided, and the position of the ejection port of the nozzle is provided so as to be movable and adjustable with respect to the throttle portion of the main body duct. It has a different configuration.

In order to achieve the second object, the second
This means is a structure of an induction ventilation device provided with nozzle operating means capable of moving and adjusting the position of the nozzle outlet from the outside of the main duct.

In order to achieve the third object, the third
The above means is a configuration of an induction ventilation device provided with remote control means for moving and adjusting the position of the nozzle outlet by remote control.

In order to achieve the fourth object, the fourth
Means is a pressure detecting means for detecting the pressure inside the ventilation passage,
The induction ventilation device is provided with an automatic pressure operation means for moving and adjusting the position of the nozzle outlet based on the detection signal of the pressure detection means.

Further, in order to achieve the fifth object,
The means is an indoor temperature / humidity detecting means for detecting the indoor temperature / humidity,
And an outdoor temperature / humidity detecting means for detecting the outdoor temperature / humidity,
The induction ventilation device is provided with a temperature / humidity automatic operation means for moving and adjusting the position of the jet outlet of the nozzle based on the detection signals of these detection means.

[0018]

According to the present invention, with the construction of the above-mentioned first means, when the jet outlet of the nozzle is brought close to the throttle portion of the main body duct, the maximum wind velocity portion of the pressurized air jetted from the jet outlet of the nozzle is the inner diameter of the throttle portion. Since it is located in a small size area, the air volume inside the throttle part where the pressurized air attracts decreases and the ventilation volume decreases. Conversely, if the nozzle outlet is moved away from the throttle part of the main body duct, the pressure will increase. The maximum air velocity portion of the air is located in the portion where the inner diameter of the throttle portion is large, and the air volume inside the throttle portion that is attracted by the pressurized air increases, and the ventilation volume increases.

Further, according to the constitution of the second means, the position of the nozzle ejection port can be adjusted from the outside of the main body duct by the nozzle operating means, and therefore, the adjustment work inside the narrow main body duct is not required. Also, readjustment after installing the induction ventilator can be easily performed.

Further, according to the structure of the third means, the position of the nozzle outlet can be remotely controlled by the remote control means. Therefore, by providing the remote control means at a place where it is easy to operate, the ventilation air volume can be controlled. The adjustment operability can be further improved.

Further, according to the structure of the fourth means, when the outside air enters the inside of the ventilation passage during the operation of the induction ventilation device and the pressure inside the ventilation passage rises, the pressure detection means detects this and detects this. Based on the signal, the automatic pressure operation means adjusts the position of the nozzle outlet in the direction away from the throttle of the main body duct to increase the attraction effect inside the main body duct, and outside air enters the room through the ventilation passage. It will prevent intrusion.

Further, according to the structure of the fifth means, the indoor temperature / humidity detecting means detects the indoor temperature / humidity, and the outdoor temperature / humidity detecting means detects the outdoor temperature / humidity, respectively, and based on the detection signals of these detecting means. When the temperature / humidity automatic operation means has a large indoor / outdoor temperature / humidity difference, the position of the nozzle outlet is adjusted so as to approach the narrowed portion of the main duct to reduce the attraction effect inside the main duct. When the temperature difference between indoor and outdoor is small, the position of the jet outlet of the nozzle is adjusted in the direction away from the narrowed portion of the main duct to increase the attracting action inside the main duct.

[0023]

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, one end is connected to the discharge port 1
4, inside the main body duct 1 which has a substantially L-shaped cylindrical shape with the other end as the suction port 17 and has a narrowed portion 1A whose inner diameter decreases toward the discharge port 14 side. A hollow rod-shaped fixed nozzle 3 fitted and fixed to the outer peripheral portion of the base end portion is provided on the inner peripheral portion of the fixed hole 2 provided on the inner wall portion of the main body duct 1. It is located on the axis. Then, the moving nozzle 5 provided with the ejection port 4 whose opening is gradually reduced toward the tip
Is connected to a nozzle hole 6 provided at the other end of the fixed nozzle 3 and slidably inserted in the axial direction of the main body duct 1, so that the position of the ejection port 4 of the moving nozzle 5 is adjusted to the narrowed portion 1A. The movement is adjustable. Further, a nozzle set screw 7 is provided on the outer peripheral side surface of the main body duct 1 for holding and fixing the moving nozzle 5, and the pressurized air intake port 8 at the base end portion of the fixed nozzle 3 is provided in the fixing hole 2 of the main body duct 1. The connection pipe 9 is connected from the peripheral portion to the outside of the main body duct 1 so as to communicate therewith, and the connection pipe 9 is connected to a pressurized air supply device (not shown) via a connection pipe 10. There is.

Further, the inspection port 1 is provided on the side wall of the main body duct 1 at the tip of the fixed nozzle 3 of the main body duct 1 on the jet outlet 4 side.
1 is provided, and a cover 12 is held and fixed by a fixing screw 13 so as to cover the inspection port 11.

The discharge port 14 of the main body duct 1 has
The ventilation duct 1B is formed by connecting the exhaust duct 16 communicating with the outside 15 to the suction port 17 and the suction grill 19 communicating with the room 18 with each other.

In the above structure, when the pressurized air supply device is operated, the pressurized air 20 pressurized by the pressurized air supply device passes through the connecting pipe 10, the connecting cylinder 9 and the pressurized air intake port 8. Is forced into the inside of the nozzle 3 and is jetted vigorously from the jet port 4 toward the discharge port 14 while increasing the flow velocity. At this time, if the jet port 4 of the moving nozzle 5 is brought close to the narrowed portion 1A of the main body duct 1. The maximum wind velocity portion of the pressurized air 20 ejected from the ejection port 4 of the moving nozzle 5 is located in a portion where the inner diameter of the throttle portion 1A is small, and the air volume inside the throttle portion 1A attracted by the pressurized air 20. When the jet 4 of the moving nozzle 5 is moved away from the throttle portion 1A, the maximum wind speed portion of the pressurized air 20 is located in a portion where the inner diameter of the throttle portion 1A is large. , Pressurized air 2 There so that the ventilation in the air volume of the inner aperture portion 1A to attract increases increases. Therefore, the position of the ejection port 4 is slid from the inspection port 11 to set the desired ventilation air volume for the room, and the movable nozzle 5 is held and fixed by the nozzle set screw 7, and the inspection port 11 is fixed. Cover with cover 12, fixing screw 13
By fixing with, the ventilation air volume can be easily adjusted.

As described above, according to the induction ventilation device of the first embodiment of the present invention, it is easy to predict the optimum ventilation air volume according to the size and shape of the room to be constructed and adjust the moving nozzle 5 of the induction ventilation device. Anyone can be properly ventilated according to the room.

In this embodiment, the exhaust duct 16 communicating with the outside 15 is provided at the tip of the discharge port 14 of the main body duct 1.
By connecting a suction grill 19 communicating with the room 18 to the suction port 17, the dirty air 18A in the room 18 is connected.
Although the case where the main body duct 1 is discharged to the outside 15 has been described, the main body duct 1 is formed in a cylindrical shape as shown in FIG. 2, and the tip of the discharge port 14 communicates with the inside 18. By providing the substantially L-shaped tubular duct 21 and the air supply duct 22 that connects the outdoor unit 15 and the suction port 17 to each other, fresh air 15A outside the outdoor unit 15 may be supplied to the indoor unit 18, It does not make a difference in its action and effect.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 and 4.

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, the long hole 2 is formed in the lower surface 23 of the moving nozzle 5A on the ejection port 4 side.
4a, a connecting piece 24 projecting downward is provided, and the other end of the adjusting lever 26, one end of which is connected via a shaft 25 slidably provided in the long hole 24a of the connecting piece 24, has the other end of the main body duct 1 A ceiling groove 27 is provided in the ceiling plate 27 so as to project outward and can be moved, and a support tool 29 in which a substantially central portion of the adjusting lever 26 is provided on the lower surface 1a of the main body duct 1 so that the adjusting lever 26 can be operated from the room 18 side. Is provided rotatably to form a rotation fulcrum portion 30 of the adjusting lever 26 and constitutes a nozzle operating means 31 of the moving nozzle 5A.

In the above structure, when the pressurized air supply device is operated, the pressurized air 20 pressurized by the pressurized air supply device passes through the connecting pipe 10, the connecting cylinder 9 and the pressurized air intake port 8. Is forced into the nozzle 3 and is jetted vigorously from the jet port 4 toward the discharge port 14 while increasing its flow velocity. At this time, the position of the tip of the jet port 4 is set to set the ventilation air volume of the room. When the tip of the adjusting lever 26 connected to the moving nozzle 5A is operated from the room 18 side,
Since the moving nozzle 5A moves back and forth, the attraction efficiency changes and the air volume can be adjusted to the optimum value. Further, even if an error or change occurs in the preset air volume, it can be easily reset by operating the tip of the adjusting lever 26 from the room 18 side later. In this way, the optimum air flow rate can be set during the construction of the induction ventilator, and the air flow rate can be easily adjusted from the room 18 even during operation of the induction ventilator.

As described above, according to the induction ventilation device of the second embodiment of the present invention, even if the optimum ventilation air volume changes due to factors such as environmental changes inside the room 18, the nozzle operating means 3 from the room 18 is changed.
1 makes it possible to easily set the air volume during the operation of the induction ventilation device, and it becomes unnecessary to provide the ceiling plate 27 with an inspection port or the like.

Next, a third 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 of the second embodiment are designated by the same reference numerals, and the description thereof will be omitted. As shown in the figure, the movable nozzle 5B has a long hole 32 in the upper surface portion on the jet outlet 4 side, and a connecting piece 33 protruding upward is provided.
The other end of a connecting lever 35, which is connected at one end through a shaft 34 slidably provided in the long hole 32 of 3, is attached to a reduction shaft 38 that is decelerated by a gear group 37 that is normally and reversely rotated by a motor 42, The remote operation means 31A is configured by providing the main body duct 1 in which the slide groove 39 is formed, and providing the remote operation device 36 that sends a signal for rotating the motor 42 forward or backward in a predetermined range.

In the above structure, when the ventilation air volume is adjusted, the motor 42 of the remote control means 31A is normally or reversely rotated within a predetermined range by operating the remote control device 36, and the reduction shaft 38 is rotated via the gear group 37. Connection lever 3
5, the moving nozzle 5B moves, the attraction efficiency changes, and the optimum ventilation air volume can be adjusted.

As described above, according to the induction ventilation device of the third embodiment of the present invention, since the position of the moving nozzle 5B can be remotely operated by hand, it is possible to eliminate the operation of switching the air volume in an unreasonable manner. Therefore, it is possible to easily adjust the optimum ventilation air volume without taking time and effort.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The first embodiment and the third embodiment
The same parts as those in the embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in the figure, the pressure detecting element 40 is provided inside the air passage 1B, and the pressure automatic operating means for adjusting the position of the moving nozzle 5B based on the detection signal detected by the pressure detecting element 40. 31B is provided.

In the above structure, the outdoor 1 surrounding the dwelling unit
The environment of 5 changes daily such as changes in atmospheric pressure and outside wind,
When strong external air blows against the outer wall during operation of the induction ventilation device, and this external air enters the exhaust duct 16 and the pressure inside the ventilation passage 1B becomes several times or more higher than that in normal operation, the pressure is detected. The automatic pressure operating means 31B moves the movable nozzle 5B based on this detection signal to secure the optimum ventilation air volume, whereby the outside air is ventilated by the ventilation passage 1B.
Stable ventilation can be surely performed without entering the room 18 through the inside.

As described above, according to the induction ventilator of the fourth embodiment of the present invention, strong external air blows against the outer wall during operation of the induction ventilator, and this external air enters the ventilation passage 1B, The pressure inside the ventilation passage 1B rises to several times or more that during normal operation, the direction of flow of the pressurized air 20 is pushed and bent toward the room 18, and the dirty air inside the ventilation passage 1B flows back into the room 18. Therefore, it is possible to reliably prevent the outside wind from entering the room 18 and causing a harmful effect such as a cold draft.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The same parts as those in the fourth embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, a temperature / humidity detecting means 41 for detecting the outside air temperature and humidity of the outside 15 is provided on the outside 15 side and the inside 18
The temperature / humidity detecting means 41A for detecting the temperature / humidity is provided on the room 18 side, and the temperature / humidity automatic operating means 31C for adjusting the position of the moving nozzle 5B is provided based on the detection signals of these temperature / humidity detecting means 41, 41A. The configuration is provided.

In the above structure, when the room 18 is cooled / heated according to changes in season, weather, etc., and the temperature difference between indoor and outdoor is large, this is detected by the temperature / humidity detecting means 41,
41A detects, and based on these detection signals, the temperature / humidity automatic operation means 31C adjusts the movable nozzle 5B in the direction of approaching the throttle portion 1A to reduce the ventilation air volume, suppress the increase in cooling and heating load due to ventilation, and When the outside temperature / humidity difference is small, by adjusting the movable nozzle 5B in a direction away from the throttle portion 1A to increase the ventilation air volume,
Ventilation can be done efficiently.

As described above, according to the induction ventilator of the fifth embodiment of the present invention, the cooling / heating load of the room 18 is prevented from increasing due to the ventilation, and the temperature / humidity of the room 18 is significantly changed to cause discomfort. It can be prevented from occurring.

[0046]

As is apparent from the above-described embodiments, according to the present invention, the position of the jet outlet of the nozzle is provided so as to be movable and adjustable with respect to the narrowed portion of the main duct, so that a room for constructing an induction ventilation device is provided. It is possible to provide an induction ventilation device capable of finely and easily setting an appropriate ventilation air volume according to various construction sites having different ventilation air volumes depending on the size, shape, and the like.

Further, by providing the nozzle operating means capable of moving and adjusting the position of the nozzle outlet from the outside of the main duct, the operability of adjusting the ventilation air volume of the induction ventilation device can be improved.

Further, by providing the remote operation means capable of moving and adjusting the position of the jet outlet of the nozzle by remote operation, it is possible to further improve the operability of adjusting the ventilation air volume of the induction ventilation device.

Further, by providing pressure detection means for detecting the pressure inside the ventilation passage and automatic pressure operation means for adjusting the position of the nozzle outlet based on the detection signal of this pressure detection means, the outside air is ventilated. It is possible to prevent a harmful effect such as a cold draft from being caused by entering a room through a path.

Further, the indoor temperature / humidity detecting means for detecting the indoor temperature and humidity, the outdoor temperature / humidity detecting means for detecting the outdoor temperature / humidity, and the position of the nozzle outlet are determined based on the detection signals of these detecting means. By providing the temperature / humidity automatic operation means for adjusting, it is possible to prevent an increase in the cooling and heating load in the room due to ventilation, and to prevent the temperature and humidity in the room from significantly changing and causing discomfort.

[Brief description of drawings]

FIG. 1 is a sectional view of an induction ventilation device according to a first embodiment of the present invention.

FIG. 2 is a schematic view showing an installation state of the induction ventilation device of the first embodiment when inhaling outside air.

FIG. 3 is a sectional view of the induction ventilation device of the second embodiment.

FIG. 4 is an enlarged view of the nozzle operating means of the induction ventilation device of the second embodiment.

FIG. 5 is a sectional view of the induction ventilation device of the third embodiment.

FIG. 6 is an enlarged view of a remote control means of the induction ventilation device according to the third embodiment.

FIG. 7 is a cross-sectional view showing an installed state of the induction ventilation device of the fourth embodiment.

FIG. 8 is a cross-sectional view showing an installed state of the induction ventilation device of the fifth embodiment.

FIG. 9 is a schematic view showing the installation state of a conventional induction ventilation device.

FIG. 10 is a sectional view of the induction ventilation device.

[Explanation of symbols]

 1 Main Duct 1A Throttle 1B Ventilation Path 3 Fixed Nozzle 4 Jet Nozzle 5 Movable Nozzle 5A Movable Nozzle 5B Movable Nozzle 14 Discharge Port 15 Outdoor 17 Suction Port 18 Indoor 20 Pressurized Air 31 Nozzle Operating Means 31A Remote Operating Means 31B Pressure Automatic Operation Means 31C Temperature / humidity automatic operation means 36 Remote operation device 40 Pressure detection means 41 Temperature / humidity detection means 41A Temperature / humidity detection means

Claims (5)

[Claims] 1. A discharge port having a cylindrical shape having a narrowed portion whose inner diameter is reduced toward the discharge port, with one end serving as a discharge port and the other end serving as a suction port. A main body duct that forms a ventilation path by communicating the suction port to the outside of the room or the discharge port to the room and the suction port to the outside of the room; and the throttle provided from the suction port side. Pressurized air is jetted toward the section side,
The main body duct is provided with a nozzle having a jet port that attracts air in the main body duct to the discharge port side, and a pressurized air supply device that supplies pressurized air to the nozzle. Induction ventilator provided so that it can be moved and adjusted freely with respect to the throttle part. 2. A nozzle operating means for adjusting the position of the nozzle outlet from the outside of the main duct is provided.
Inspiratory ventilation device as described. 3. The induction ventilation device according to claim 1, further comprising remote control means capable of moving and adjusting the position of the jet outlet of the nozzle by remote control. 4. The pressure detecting means for detecting the pressure inside the ventilation passage, and the automatic pressure operating means for moving and adjusting the position of the jet outlet of the nozzle based on the detection signal of the pressure detecting means. Induction ventilation system. 5. An indoor temperature / humidity detecting means for detecting indoor temperature / humidity, an outdoor temperature / humidity detecting means for detecting outdoor temperature / humidity, and a position of a nozzle ejection port based on detection signals of these detecting means. The induction ventilator according to claim 1, further comprising a temperature / humidity automatic operation means for movement adjustment.