JP2000234773A - Ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a tornado type ventilator in which cooling/heating load of a cooler/heater is prevented from increasing without sacrifice of ventilation performance. SOLUTION: A ventilator comprises means 3, 6, 8, 11, 12 for introducing outer air and blowing a swirling flow F1 into a room, and means 4, 7, 9, 13 disposed on the inside of the air supply means 3, 6, 8, 11, 12 in order to suck the air on the inside of the swirling flow F1 as a swirling air flow being exhausted to the outside. The outer air introduction quantity Qfor in the supply air quantity Qa being blown out from the air supply means 3, 6, 8, 11, 12 is set at zero or above and lower than the exhaust air quantity Qout of the exhaust means 4, 7, 9, 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention can effectively exhaust air in a specific local area to the outside by generating a spiral swirling vortex in a direction opposite to a supply direction and an exhaust direction. The present invention relates to such a ventilation device.

[0002]

2. Description of the Related Art For example, as one method of exhausting a specific local area, a relationship between blast air blown out in a spiral manner and intake negative pressure sucked in a direction opposite to the blast air is defined as follows.
2. Description of the Related Art A so-called tornado-type ventilator that generates a spiral intake swirling vortex in the exhaust direction has conventionally been provided.

[0003] For example, Japanese Patent Application Laid-Open No. 4-140
And Japanese Patent Application Laid-Open No. 9-42734.

First, Japanese Patent Application Laid-Open No. 4-140 discloses that
An exhaust hood is provided at an upper portion of the exhaust target space, and an exhaust port connected to an exhaust fan is formed at a central portion of the exhaust hood, and a lower surface of the exhaust hood has a tangential direction on the same circumference as the center of the exhaust port. An exhaust device that ejects air to generate a spiral airflow that rises spirally by the ejected air and the suction negative pressure from the exhaust port, and exhausts the air in the exhaust target space by the spiral airflow. A first discharge port for discharging air in a tangential direction on the same circumference as the center of the exhaust port on the lower surface of the supply chamber while fixing an air supply chamber to a lower outer peripheral portion of the exhaust hood; A second jet port for jetting air toward the lower floor surface is alternately arranged at a fixed interval, and air from the second jet port is jetted appropriately toward the floor surface. As a result, from the first jet port While not disturb the helical rising spiral air flow generated by the negative suction pressure from injected air and the exhaust port to the tangential direction of the center and the same circumference of the serial outlet,
The spiral air flow efficiently exhausts the space to be exhausted.

In Japanese Patent Application Laid-Open No. Hei 9-42734, the above-described helical spiral airflow exhaust device is applied to an exhaust means such as a smoke of a heating cooking appliance such as a gas stove to perform effective exhaust. It has become.

[0006]

However, the above-described conventional examples have the following problems in any case.

That is, in the configuration of the above-mentioned conventional example, air supply and exhaust are performed separately and independently, and the amount of air supply introduced from the outside inevitably due to the mechanism of vortex formation. Is greater than the displacement. Therefore, in winter, the room temperature decreases and the heating load of the heating device increases, while in summer, the cooling load of the cooling device increases,
There is a problem that the energy saving performance is deteriorated.

[0008] Further, the area of the air outlet and the area of the air inlet,
If the displacement is too large in relation to the air flow, the short circuit becomes intense, and the generated swirling vortex becomes unstable or the reaching point becomes short.

For example, due to the design of the apparatus, such a tendency occurs when the outlet is very close to the inlet, the area of the outlet is small, and the inlet is large.

The present invention has been made in order to solve such a problem, and employs a configuration capable of appropriately setting the relationship between the above-mentioned externally supplied air supply amount and the externally exhausted air amount. Accordingly, an object of the present invention is to provide a high-performance tornado-type ventilator that solves the above-described problems.

[0011]

Means for Solving the Problems In order to achieve the above object, the present invention is provided with the following means for solving the problems.

[0012] (1) ventilator of the Invention The invention according to claim 1, introducing the outside air, the air supply means blown into the passenger compartment in the spiral swirling vortex F ₁ 3,6,8,1
And 1,12, an exhaust for exhausting to the outside positioned inside the air supply means 3,6,8,11,12 sucks inside air of the swirling vortex F ₁ inside the helically spiral swirling flow Means 4,
In the ventilating apparatus provided with 7, 9, and 13, the supply air volume Q blown out by the supply means 3, 6, 8, and 12 is described.
When the outside air introduction amount Qfor in a is zero or more, the exhaust air amount Qou exhausted by the exhaust means 4, 7, 9, 13
t.

Therefore, in this configuration, the amount of air introduced from outside Qfor in both winter and summer, for example,
Does not exceed the exhaust air volume Qout to the outside, and the cooling and heating load does not increase.

In addition, since the supply air flow Qa from the air supply means 3, 6, 8, and 12 can be maintained larger than the exhaust air flow Qout to the outside, the supply direction and the exhaust direction can be maintained. Both can form a stable spiral vortex.

(2) The ventilating apparatus according to the second aspect of the present invention is the ventilating apparatus according to the first aspect, wherein the air supply means 3, 6, 8, 12 adjusts the external air introduction amount Qfor in the supply air volume Qa by: The air supply means 3, 6, 8, 12
It is characterized in that it is performed by mixing and circulating room air with the outside air introduced in the part.

Therefore, in this configuration, the outside air introduction amount Qfor in the supply air amount Qa is adjusted by mixing the outside air and the room air in the air supply means 3, 6, 8, and 12, and
In both winter and summer, the amount of air Qfor introduced from the outside does not exceed the amount of exhaust air Qout to the outside, so that the cooling and heating load does not increase.

In addition, the supply air amount Qa from the air supply means 3, 6, 8, and 12 can be maintained larger than the exhaust air amount Qout to the outside, as in the prior art. Both can form a stable spiral vortex.

(3) The ventilating apparatus according to the third aspect of the present invention provides the air supply chamber 3 into which the outside air flowing from the air supply duct 6 is introduced in the turning direction, and the air supply chamber 3 concentrically inside the air supply chamber 3. An exhaust chamber 4 provided to exhaust inside air through an exhaust duct 7; a recirculation-type ventilation path 16 formed between the exhaust chamber 4 and the air supply chamber 3; and a lower end of the air supply chamber 3 Are provided on the side opening surface, and the swirl flow generating stators 12, 12,...
An air outlet 11 for blowing air in a turning direction via
In the ventilator provided with the air suction port 13 provided on the lower end side opening surface of the exhaust chamber 4, the external air introduction amount Qfor in the supply air volume Qa blown out from the air outlet 11 of the air supply chamber 3. Is set to be equal to or more than zero and equal to or less than the exhaust air volume Qout exhausted from the exhaust chamber 4.

Therefore, in this configuration, air is first introduced from the air supply duct 6 in the swirling direction in the air supply chamber 3, and the circulation type ventilation path 16 having a long flow path length in the air supply chamber 3 is provided. Thus, an effective swirling vortex is formed, which spirally recirculates around the exhaust chamber 4.

The effective swirling vortex flows from the air outlet 11 after being given a more sufficient vector in the swirling direction via the swirling flow generating stators 12, 12... Of the air outlet 11. A stable swirling vortex at a constant speed and in a fixed direction is blown out smoothly in the turning direction.

Therefore, the air flow blown out from the air outlet 11 becomes a more effective spiral swirling flow having a stable flow velocity and swirling direction, and the inner air inlet 1
In three directions, an upward swirling vortex having sufficient exhaust performance is generated.

In this case, the amount Q of air supplied from the air outlet 11 of the air supply chamber 3 is supplied.
Since the outside air introduction amount Qfor in a is equal to or greater than zero and equal to or less than the exhaust air volume Qout exhausted from the exhaust chamber 4, for example, in any case of winter and summer, air introduced from outside is provided. The amount Qfor does not exceed the exhaust air volume Qout to the outside, and the cooling / heating load does not increase.

In addition, the supply air amount Qa from the air supply means 3, 6, 8, and 12 can be maintained larger than the exhaust air amount Qout to the outside, as in the conventional case. Both can form a stable spiral vortex.

(4) The invention according to claim 4 The ventilating apparatus according to the invention is characterized in that
The adjustment of the outside air introduction amount Qfor in the supply air amount Qa blown out from the air outlet 11 of the air supply chamber 3 is performed by forming an indoor air introduction port 19 in the air supply chamber 3 and controlling the outside air introduced. This is performed by mixing and circulating indoor air.

Therefore, in this configuration, the outside air introduction amount Qfor in the supply air amount Qa is adjusted by mixing the outside air and the room air in the air supply means 3, 6, 8, and 12, and
For example, in both winter and summer, the amount of air Qfor introduced from the outside does not exceed the amount of exhaust air Qout to the outside, so that the cooling and heating load does not increase.

In addition, as described above, the supply air amount Qa from the air supply means 3, 6, 8, and 12 can be maintained to be larger than the exhaust air amount Qout to the outside. Both can form a stable spiral vortex.

(5) The invention of claim 5 The ventilating apparatus according to the present invention is characterized in that
A variable opening / closing damper 20 is provided at the room air inlet 19 of the air supply chamber 3.
Thus, the mixing amount of the indoor air with respect to the introduced outside air is arbitrarily adjusted.

Therefore, in this configuration, the damper 2
With 0, the mixing ratio between the outside air and the room air in the air supply means 3, 6, 8, and 12 is arbitrarily adjusted, whereby the external air introduction amount Qfor in the air supply air amount Qa is adjusted.

[0029]

As described above, according to the ventilation device of the present invention, the energy saving performance in relation to the cooling and heating device can be improved without lowering the ventilation performance.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIGS.
2 shows the configuration and operation of the ventilation device according to Embodiment 1 of the present invention.

As shown in FIG. 1, the ventilation device 1 is provided above a cooking utensil 2 such as a gas table in a kitchen of a general household or a kitchen for business use. While being wrapped in the air curtain flow in a swirling state from the upper side to the lower side by the introduced outside air (fresh air), the air curtain flows upward in the air curtain flow due to the suction negative pressure acting on the center of the air curtain flow in the exhaust direction. The smoke and the like generated from the cooking device 2 are efficiently sucked and discharged to the outside by the swirling vortex generated toward the outside, and in this case, the indoor air is mixed with the introduced outside air. Thus, the ratio of the amount of outside air introduced into the amount of air supplied to the room is appropriately controlled.

In the drawing, reference numeral 3 denotes a truncated pyramid-shaped air supply chamber provided above the cooking device 2, for example, and a top plate 3a inside the air supply chamber 3.
A rectangular cylindrical exhaust chamber 4 having a diameter corresponding to the portion extends from the top plate 3a to the lower end side opening surface position and is integrally provided. A rectifying plate 5 for swirling flow rectification is provided over the entire outer surface of the air supply chamber 3 around the lower outer periphery of the exhaust chamber 4.

Further, an inside air inlet 1 for introducing room air is provided on an outer plate (side wall surface) 3b of the air supply chamber 3.
Are formed at predetermined intervals, and one of the corners thereof has a supply duct 6 for supplying outside air in a swirling direction, for example, as shown in FIGS. An air port 6a is connected to the upper center of the exhaust space 17 of the exhaust chamber 4 (the center of the top plate 3a of the air supply chamber 3) so that the exhaust ports 7a of the exhaust duct 7 communicate with the inside. The outside air intake end and the inside air discharge end are provided to extend outside. In the middle of each of the air supply duct 6 and the exhaust duct 7, for example, an air supply duct fan 8 composed of a multi-blade blower (sirocco fan),
Exhaust duct fans 9 are provided, and the corresponding intake and exhaust operations are realized by their driving.

On the other hand, as shown in FIG. 1, a partition (decorative panel) 10 having a predetermined vertical width is provided on the opening surface between the air supply chamber 3 and the lower end side exhaust chamber 4. An annular air blower having a downwardly extending air blow passage having a slant angle in the outward spread direction substantially similar to the slant angle of the outer plates 3b of the air supply chamber 3 is provided in a portion near the outer periphery of the air supply chamber 3. An outlet 11 is provided. Thus, the outside air sucked through the air supply duct 6 and the inside air introduced through the inside air inlets 19 are provided around the exhaust chamber 4 inside the air supply chamber 3. A recirculating air supply ventilation passage 16 having a passage diameter enlarged in a centrifugal direction for guiding the air-fuel mixture to the air outlet 11 while swirling the air-fuel mixture as indicated by an arrow is formed. A swirling flow is formed in advance in the mixed air flow of the inside and outside air supplied to the outlet 11. on the other hand,
The air outlet passage of the air outlet 11 has a constant inclination angle with respect to the circumferential surface thereof, and effectively imparts a turning direction vector to the airflow blown out from the air outlet 11. Are arranged at predetermined intervals in the circumferential direction, and are more effective against the air flow supplied in the state of the above-mentioned swirling flow. It gives a turning force. In addition, an air suction grille 14 and a filter 15 are sequentially provided from the lower side to the upper side in the air inlet 13 which is an opening surface on the lower end side of the exhaust chamber 4. Further, a hood 18 is provided on the outer periphery of the lower end side of the air supply chamber 3 so as to regulate the diffusion of the airflow blown out from the air outlet 11. For the same reason, an airflow adhesion prevention guide 10a is also provided on the outer peripheral side of the air outlet 11 on the side of the partition 10 protruding by a predetermined dimension in the blowing direction.

As described above, in the ventilation device according to this embodiment, the air supply port 6a and the inside air introduction ports 19, 19,.
A rectangular cylindrical exhaust chamber 4 having an equal diameter in the vertical direction is provided inside a truncated pyramid-shaped air supply chamber 3 having an inner diameter gradually enlarged from above to below.
The air suction port 13 is provided at the lower end side opening surface of the air supply chamber 3, and the radial position is gradually increased from above to below the outer periphery of the air suction port 13 at the lower end side opening surface of the air supply chamber 3 at a predetermined angle. Each of the annular air outlets 11 having the air outlet passages provided is provided, and the diameter of the passage from the upper side to the air outlet 11 from the air inlet 6a of the air inlet duct 6 to the air outlet 11 around the exhaust chamber 4 is formed. An enlarged recirculation type air supply passage 16 is formed, and the recirculation type air supply passage 16 is formed.
.. Can be mixed with outside air introduced from outside through the air supply duct 6 through the air supply port 6a in the turning direction from the outside through the inside air introduction ports 19, 19,. After forming a strong swirling mixed airflow, the air is blown out from the air outlet 11 toward the outer peripheral surface of the lower cooking device 2 in the room at a predetermined blowing angle.

A rectifying plate 5 for rectifying the flow of the swirling mixed gas flowing through the circulating air supply passage 16 is provided in the middle of the circulating air supply passage 16, and the circulating air supply passage 16 is provided. A turning direction effective for the mixed air flow of the outside air and the inside air blown out from the air outlet 11 is provided in the air outlet passage of the air outlet 11 at the lower outer periphery of the air supply chamber 3 which is continuous with the ventilation passage 16 for air. , Which have the same swirling direction as the supplied swirling flow, have a predetermined swirling angle larger than the swirling angle, and keep a predetermined interval in the circumferential direction. It is provided.

Therefore, when the air supply duct fan 8 is driven, the outside air introduced into the air supply chamber 3 from the air supply duct 6 in the turning direction is supplied to the inside air inlet 1.
After being mixed with the indoor air from 9, 19... And rectified by the rectifying plate 5 while being efficiently circulated and mixed through the circulating air supply passage 16, the whirl is stabilized at a uniform flow velocity. The air is supplied to the air outlet 11 as a flow. Then, when passing through the air outlet passage of the air outlet 11, by the swirling flow generating stator 12, 12, ..., are even greater vectors of the turning direction is applied, a stronger spiral swirling current F ₁ And is blown obliquely toward the outer periphery of the lower side heating cooking appliance 2.

[0038] As a result, by the spiral swirling blowing airflow F _1, together with the air curtain surrounding so as not to diffuse smoke or the like flue gas exiting the cooking appliance 2 around is formed, on its center axis direction inside is swirling air flow F ₂ large suction force of the tornado-like rising from the lower side to the upper side by the suction force of the exhaust duct fan 9 is formed therewith in opposite directions.

[0039] And, it thereby the spiral blowing swirling airflow F ₁ from become cooked wrapped by the air curtain device 2 part of the smoke and exhaust gas or the like contaminated reliable evacuation of air, and can be cleaned.

Then, in this configuration, in that case,
As described above, the outer plate (side wall surface) 3 of the air supply chamber 3
b, 3b... inlets 19 for indoor air (indoor air)
Are formed and the indoor air Qc including the natural ventilation amount Qnat as shown in FIG.
By mixing and circulating ir, the air supply amount Q blown out into the room R from the air outlet 11 of the air supply chamber 3
a is such that the outside air introduction amount Qfor in a is equal to or more than zero and equal to or less than the exhaust amount Qout exhausted from the exhaust chamber 4 to the outside (0 ≦ Qfor ≦ Qout,
However, Qa = Qcir + Qfor, Qout = Qfor +
Qnat).

Therefore, in this configuration, the outside air introduction amount is determined by the ratio (mixing ratio) of the indoor air introduction amount Qcir to the outside air introduction amount Qfor in the recirculation type air supply passage 16 in the air supply chamber 3. Qfor is appropriately adjusted, for example, in both winter and summer, the amount of air introduced from outside (forcible supply amount) Qfor does not exceed the amount of exhaust Qout to the outside. There is no need to increase the load.

In this case, even if the outside air introduction amount Qfor in the supply air amount Qa is zero, as is apparent from FIG. 5, the outside air due to the natural ventilation amount Qnat from the room gap or the like is mixed into Qcir. Therefore, the exhaust amount Qout and the supply amount Qa are substantially balanced (Qout = Qf).
or + Qnat = 0 + Qnat) Further, due to the design of the device, for example, when the air outlet 11 and the air inlet 13 are very close, the area of the air outlet 11 is small, and the area of the air inlet 13 is large, etc. In the relationship between the outlet area and the air inlet area, and their relation to the air volume,
If the displacement is too large, the short circuit becomes intense, and the displacement Va due to the short circuit becomes large.
Is added to the exhaust amount Vout due to the upward swirling flow, which becomes the exhaust amount Qout, so that the generated swirling vortex becomes unstable or the reaching point becomes short.

However, in the above configuration, the air outlet 11
And without changing the size of the air inlet 13,
As in the conventional case, the supply air amount Qa to the room R is equal to the exhaust amount Q to the outside.
Since it can be maintained in a state larger than out, it is possible to form a stable spiral vortex in both the air supply direction and the air discharge direction.

As a result, according to the ventilating apparatus according to the present embodiment, it is possible to improve the energy saving performance in relation to the cooling / heating apparatus without lowering the ventilation performance.

(Embodiment 2) FIGS. 6 to 8 show a configuration of a ventilating apparatus according to Embodiment 2 of the present invention.

In the ventilating apparatus 1 of this embodiment, for example, as shown in FIG. 6 and FIG.
.. formed in a duct structure having a short length, and provided with opening / closing variable dampers 20, 20... Which can be electrically driven and controlled by a stepping motor or the like at the opening thereof, and opened / closed by a control unit such as a microcomputer. Variable damper 2
The opening / closing amount of 0, 20,... Is varied to adjust the inside air introduction amount to a desired amount, and the relative amount of outside air is variably controlled.

At the same time, a deodorizing device 30 having an activated carbon purifying element is provided in the exhaust duct 7.

The other structure is the same as that of the first embodiment shown in FIGS.

As described above, in the ventilation device according to this embodiment, the air supply port 6a and the inside air introduction ports 19, 19,.
A rectangular cylindrical exhaust chamber 4 having an equal diameter in the vertical direction is provided inside a truncated pyramid-shaped air supply chamber 3 having an inner diameter gradually enlarged from above to below.
The air suction port 13 is provided at the lower end side opening surface of the air supply chamber 3, and the radial position is gradually increased from above to below the outer periphery of the air suction port 13 at the lower end side opening surface of the air supply chamber 3 at a predetermined angle. Each of the annular air outlets 11 having the air outlet passages provided is provided, and the diameter of the passage from the upper side to the air outlet 11 from the air inlet 6a of the air inlet duct 6 to the air outlet 11 around the exhaust chamber 4 is formed. An enlarged recirculation type air supply passage 16 is formed, and the recirculation type air supply passage 16 is formed.
With respect to a desired amount of outside air introduced from the outside through the air supply duct 6 through the air supply port 6a in the turning direction, a desired amount of indoor air introduced through the inside air introduction ports 19, 19. Is formed into a swirling mixed airflow as strong as possible while mixing, and is blown from the air outlet 11 toward the outer peripheral surface of the lower cooking device 2 in the room at a predetermined blowing angle.

A rectifying plate 5 for rectifying the flow of the swirling mixed airflow flowing through the circulating air supply passage 16 is provided in the middle of the circulating air supply passage 16. A turning direction effective for the mixed air flow of the outside air and the inside air blown out from the air outlet 11 is provided in the air outlet passage of the air outlet 11 at the lower outer periphery of the air supply chamber 3 which is continuous with the ventilation passage 16 for air. , Which have the same swirling direction as the supplied swirling flow, have a predetermined swirling angle larger than the swirling angle, and keep a predetermined interval in the circumferential direction. It is provided.

Accordingly, the air supply duct fan 8
Is driven, the outside air introduced into the air supply chamber 3 from the air supply duct 6 in the turning direction is supplied to the inside air inlet 1.
After being mixed with the indoor air from 9, 19... And rectified by the rectifying plate 5 while being efficiently circulated and mixed through the circulating air supply passage 16, the whirl is stabilized at a uniform flow velocity. The air is supplied to the air outlet 11 as a flow. Then, when passing through the air outlet passage of the air outlet 11, by the swirling flow generating stator 12, 12, ..., are even greater vectors of the turning direction is applied, a stronger spiral swirling current F ₁ The air is blown obliquely toward the outer periphery of the lower specific ventilation area A.

[0052] As a result, by the spiral swirling blowing airflow F _1, together with the air curtain surrounding so as not to spread any odor and the like contaminated air emanating from the specific ventilation area A around is formed, the central axis inside, swirling intake air flow F ₂ large suction force of the tornado-like rising from the lower side to the upper side by the suction force of the duct fan 9 for the exhaust gas is formed therewith in opposite directions.

[0053] Then, whereby reliable evacuation of air and contamination aliquoted smoke or exhaust gas enveloped by an air curtain formed of blow whirling airflow F ₁ of the spiral, it is possible to clean.

Then, in this configuration, in that case,
As in the case of the first embodiment, the air supply chamber 3
Air inlet ports 19,19.
By mixing and circulating the indoor air including the natural ventilation amount with respect to the introduced outside air, the outside air in the air supply amount blown into the room from the air outlet 11 of the air supply chamber 3 is formed. The introduction amount is set to be equal to or more than zero and equal to or less than the exhaust amount exhausted from the exhaust chamber 4 to the outside.

Therefore, in this configuration, the amount of outside air introduced is appropriately determined by the ratio (mixing ratio) of the amount of indoor air introduced to the amount of outside air introduced into the recirculating air supply passage 16 in the air supply chamber 3. The amount of air introduced from outside (forced air supply) does not exceed the amount of exhaust to the outside, for example, in both winter and summer.
It is not necessary to increase the cooling / heating load of the cooling / heating device.

Particularly, in this embodiment, the opening / closing variable dampers 20, 20... Which can be electrically controlled to open and close are provided at the inside air inlets 19, 19. In addition, the amount of inside air introduced can be arbitrarily adjusted and controlled, and the relative amount of inside and outside air can be adjusted with higher accuracy.

Further, since the deodorizing device 30 is provided in the exhaust duct 7 part, the unpleasant odor and the like generated from the specific ventilation area A can be sufficiently deodorized and exhausted to the outside. .

Therefore, in the case of the ventilating apparatus, for example, as shown in FIG.
When installed so as to correspond to the upper part of 1, the deodorizing process can be performed and exhausted to the outside without dispersing an unpleasant odor generated at the time of exchanging diapers after defecation of the care-requiring person 32, etc. .

(Embodiment 3) FIG. 9 shows a configuration of a ventilating apparatus according to Embodiment 3 of the present invention.

In this ventilating apparatus 1, for example, as shown in FIG. 9, the positions of the air supply duct 6 and the exhaust duct 7 are changed and the inside air introduction ports 19, 19
.. Are formed around the connection with the air supply duct 6 on the top plate 3a of the air supply chamber 3, and variable opening / closing dampers 20, 20,. Things.

In the figure, reference numeral 3 denotes a truncated pyramid-shaped air supply chamber provided above the cooking utensil 2, for example. Inside the air supply chamber 3, a top plate 3a and an outer plate 3b are provided. A rectangular exhaust chamber 4 is provided between the inner side inner plate 3c and the inner side plate 3c so as to maintain a predetermined air supply space. As a result, a recirculating air supply ventilation passage 16 having a U-shaped cross section is formed around the outside of the exhaust chamber 4 as described later.

Further, the top plate 3a of the air supply chamber 3
An air supply port 6a of an air supply duct 6 is connected and opened from the upper side at a central portion, and an air outlet 7a of an air exhaust duct 7 is connected and opened at an outer peripheral portion of the exhaust chamber 4. An outside air intake end 6 and an inside air discharge end of the exhaust duct 7 are provided to extend outside. In the middle (or at the tip) of each of the air supply duct 6 and the exhaust duct 7, an air supply duct fan 8 and a gas exhaust duct fan 9 composed of, for example, a multi-blade fan (sirocco fan) are provided. The corresponding intake operation and exhaust operation can be efficiently realized by these driving.

Further, at the outer periphery of the connection port of the air supply duct 6 at the top plate 3a of the air supply chamber 3, an inside air inlet 19 having opening / closing variable dampers 20, 20,.
Are provided to control the opening / closing amount of the variable opening / closing dampers 20, 20,.
By mixing a desired amount of inside air with the outside air introduced through the air passage, the outside air introduction amount is substantially varied, and the temperature of the airflow blown into the room is appropriately adjusted. The opening / closing amounts of the opening / closing variable dampers 20, 20,... Are controlled using, for example, a stepping motor or another electrically driven actuator and a microcomputer.

On the other hand, as shown in the figure, the opening surface between the air supply chamber 3 and the lower end side exhaust chamber 4
A partition wall (decorative panel) 10 having a predetermined vertical width is provided, and an air blowing passage extending downward with a predetermined inclination angle in the outward spreading direction is provided in a lower part of the inner plate 3c near the outer periphery of the partition wall 10. Is provided.

With the above configuration, inside the air supply chamber 3, a recirculation type having a U-shaped cross section is formed to guide the outside air sucked through the air supply duct 6 to the air outlet 11 while swirling. An air supply ventilation passage 16 is formed, and a supply air flow is provided between the top plate 4a of the exhaust chamber 4 and the top plate 3a of the air supply chamber 3 in the air supply ventilation passage 16 as shown in the figure. Is provided. Thus, the outside air from the air supply duct 6 and the inside air from the inside air inlet 21 are uniformly mixed and the flow velocity distribution is stabilized to form a stable swirling flow in the air supply passage 16.

The air outlet passage of the air outlet 11 has an appropriate inclination angle with respect to the circumferential surface thereof, and imparts a vector in the turning direction to the air flow blown out from the air outlet passage. Are arranged at predetermined intervals in the circumferential direction so as to apply a more effective swirling force to the air flow supplied in the swirling state. In addition, an air suction grille 14 and a filter 15 are sequentially provided from the lower side to the upper side in the air inlet 13 which is an opening surface on the lower end side of the exhaust chamber 4.

Further, the outer plate 3 of the air supply chamber 3
A hood 18 is provided on the outer periphery of the lower end side to restrict the diffusion (spread angle) of the airflow blown out from the air outlet 11. For the same reason, an airflow adhesion preventing guide 10a protruding in the blowing direction is provided on the outer peripheral side of the air outlet 11 so as to protrude by a predetermined dimension.

As described above, in the ventilating apparatus according to this embodiment, the rectangular cylindrical exhaust air passage 16 having a U-shaped cross section is provided inside the truncated pyramid-shaped air supply chamber 3. While the chamber 4 is provided, the air suction port 13 is provided at the lower end side opening surface of the exhaust chamber 4, and the air suction port 13 is provided from the upper side to the lower side around the outer periphery of the air suction port 13 at the lower end side opening surface of the air supply chamber 3. An annular air outlet 11 is provided to form an air outlet passage inclined at a predetermined angle so as to enlarge the radial position, and the air inlet 6a of the air inlet duct 6 formed around the outer periphery of the exhaust chamber 4 and the air outlet 6a. A rectifying grid 33 is provided in the recirculation type air supply passage 16 extending from the inside air inlets 19, 19,... Around the outside to the air outlet passage of the air outlet 11, and the air supply duct is provided. By fan 8 After mixing and rectifying a desired amount of inside air introduced through the inside air introduction port 21 with respect to outside air introduced from outside through the air supply duct 6, the mixture is formed into a swirling flow having a stable flow velocity distribution. Further, the air is blown from the air outlet 11 toward the lower floor surface of the room at a predetermined blow angle through the swirl flow generating stators 12, 12... Has become. Correspondingly, the inside air is drawn in from the air suction port 13 by the exhaust duct fan 9 with a strong suction force.

Therefore, in this configuration, when the air supply duct fan 8 is driven, the outside air and the inside air introduced into the air supply chamber 3 from the air supply duct 6 and the inside air inlet 21 are connected to the recirculation type. The air is mixed and rectified through the rectifying grid 33 in the air supply passage 16, and is supplied to the air outlet 11 as a stable swirling flow having a uniform flow velocity while efficiently turning. Then, when passing through the air outlet passage of the air outlet 11, it has the same swirling direction as the supplied swirling flow, has a predetermined swirling angle larger than the swirling angle, and has a predetermined interval in the circumferential direction. The swirl flow generating stators 12, 12... Provided while maintaining a larger swirl direction vector give a stronger and more stable spiral flow of the flow velocity and direction (see the thick arrow). And is blown obliquely toward the periphery of the lower side heating cooking appliance 2.

As a result, an air curtain surrounding the exhaust gas such as smoke emitted from the cooking appliance 2 so as not to diffuse to the surroundings is formed by the downward spiral airflow, and the air curtain extends in the central axis direction. On the inner side, a tornado-shaped swirling intake flow (see a thin-line arrow) having a large suction force rising upward from below is formed by the large suction force of the exhaust duct fan 9 in the opposite direction.

As a result, it becomes possible to reliably exhaust and purify the contaminated air, such as smoke and exhaust gas, from the heating cooking utensil 2 wrapped by the air curtain formed by the spiral downward blowing airflow. .

As a result, according to the ventilator of the present embodiment, the air supply / exhaust capability is improved, and a sufficiently high ventilator can be provided.

Further, in this case, the ventilator is provided with the inside air inlet 1 similarly to the above-described embodiments.
The inside air is introduced in portions 9, 19 ... and the amount of introduction is appropriately controlled by opening / closing variable dampers 20, 20 ..., for example, in both winter and summer.
Since the amount of air introduced from the outside can be prevented from exceeding the amount of exhaust air to the outside, the cooling and heating load does not increase.

(Embodiment 4) FIGS. 10 and 11
9 shows a configuration of a ventilation device according to Embodiment 4 of the present invention.

As shown in FIGS. 10 and 11, for example, the ventilation device 1 has the same configuration as that of the third embodiment described above.
The above-mentioned rectifying grid 33 is eliminated, and the built-in air supply fan 3
8 and an exhaust space 17 in the exhaust chamber 4.
In addition, by providing a built-in exhaust fan 39, a swirling airflow can be generated more effectively in advance for the airflow supplied to the air outlet, and the exhaust direction can be further improved. By increasing the suction negative pressure to the air, the blow-swirl airflow and the exhaust swirl airflow can be generated more effectively, and the supply / exhaust performance is improved.

In the figure, reference numeral 3 denotes a heating cooker 2 as described above.
A gas supply chamber having, for example, a truncated pyramid shape provided in an upper part of the air supply chamber. A rectangular cylindrical exhaust chamber 4 is provided while maintaining the air space. Then, as described later, a recirculation type air supply ventilation passage 1 having a U-shaped cross section is formed around the outside of the exhaust chamber 4 as described later.
6 are formed.

Further, the top plate 3a of the air supply chamber 3
In the center, for example, as shown in the figure, an air supply port 6a of an air supply duct 6 is connected and opened from the upper side, while an outer peripheral side in the exhaust chamber 4 has an exhaust port 7a of an exhaust duct 7 provided therein.
The outside air suction end of the air supply duct 6 and the inside air discharge end of the exhaust duct 7 are provided to extend outside. In the middle of each of the supply duct 6 and the exhaust duct 7, for example, a supply duct fan 8 composed of a multi-blade fan (sirocco fan) and an exhaust duct fan 9 are provided.
Are respectively provided, and the corresponding intake and exhaust operations are efficiently realized by their driving.

Further, at the outer periphery of the connection portion of the air supply duct 6 in the top plate 3a of the air supply chamber 3, inside air inlets 19 having opening / closing variable dampers 20, 20,.
.. Are provided, and the opening / closing amount variable dampers 20, 20,.
The opening / closing amount of the air is controlled, and a desired amount of inside air is mixed with the outside air introduced through the air supply duct 6 to substantially vary the outside air introduction amount, and the temperature of the airflow blown into the room Is adjusted appropriately. The opening / closing amounts of the opening / closing variable dampers 20, 20,... Are controlled by using, for example, a stepping motor or another electrically driven actuator and a microcomputer in the same manner as described above.

On the other hand, as shown in the drawing, an opening surface between the air supply chamber 3 and the lower end side exhaust chamber 4
A partition wall (decorative panel) 10 having a predetermined vertical width is provided, and an air blowing passage extending downward with a predetermined inclination angle in the outward spreading direction is provided in a lower part of the inner plate 3c near the outer periphery of the partition wall 10. Is provided.

With the above configuration, inside the air supply chamber 3, a recirculation type having a U-shaped cross section guides the outside air sucked through the air supply duct 6 to the air outlet 11 while swirling. An air supply ventilation passage 16 is formed, and a diagonal flow is provided between the top plate 4a of the exhaust chamber 4 and the top plate 3a of the air supply chamber 3 in the air supply ventilation passage 16 as shown in the figure. An air supply fan 38 composed of a fan (or a centrifugal fan) is provided. Then, the outside air from the air supply duct 6 and the inside air from the inside air inlets 19, 19,. A strong swirling flow is formed in the ventilation passage 16. Reference numeral 38a denotes the blade of the air supply fan 38, 38b denotes the hub, and M denotes the fan motor.

The air outlet passage of the air outlet 11 has an appropriate inclination angle with respect to the circumferential surface thereof, and imparts a turning vector to the air flow blown out from the air outlet passage. Are arranged at predetermined intervals in the circumferential direction so as to apply a more effective swirling force to the air flow supplied in the swirling state. In addition, an air suction grille 14 and a filter 15 are sequentially provided from the lower side to the upper side in the air inlet 13 which is an opening surface on the lower end side of the exhaust chamber 4.

In the exhaust space 17 of the exhaust chamber 4, as shown in the figure, a dedicated exhaust fan 3 composed of a multi-blade blower commonly driven by the fan motor M
9 are provided. The exhaust fan 39 connects the air inlet 39a of the scroll portion 39b to the air inlet 13
On the other hand, the outlet 39c is connected to the exhaust port 7a in which the exhaust duct 7 is fitted.

Further, the outer plate 3 of the air supply chamber 3
A hood 18 is provided on the outer periphery of the lower end side to restrict the diffusion (spread angle) of the airflow blown out from the air outlet 11. For the same reason, an airflow adhesion preventing guide 10a protruding in the blowing direction is provided on the outer peripheral side of the air outlet 11 so as to protrude by a predetermined dimension.

As described above, in the ventilating apparatus according to this embodiment, the air supply space for forming the recirculation type air supply passage 16 having a U-shaped cross section inside the air supply chamber 3 having a truncated pyramid shape is maintained. The exhaust chamber 4 has a rectangular cylindrical shape, and an air suction port 13 is provided at an opening on the lower end side of the exhaust chamber 4, and an air suction port 13 is formed on the opening on the lower end side of the air supply chamber 3. Annular air outlets 11 each forming an air outlet passage inclined at a predetermined angle so as to gradually increase the radial position downward from the air supply duct 6, and the air supply duct 6 formed around the exhaust chamber 4. The exclusive air supply fan 38 is provided in the recirculation type air supply passage 16 extending from the air supply port 6a of the air supply port and the inside air inlet 21 surrounding the air supply port to the air outlet passage section of the air outlet port 11. Exhaust channel -4, an exhaust fan 39 is provided in the exhaust space 17, and the inside air inlet 19 is provided to the outside air introduced from outside through the air supply duct fan 9 and the air supply duct 6 by the air supply fan 38. , 19 ...
After forming the mixture into a swirling flow as strong as possible while mixing the inside air introduced through the circulating air, the swirling flow generating stators 12 and 12 further provide an effective swirling direction vector to the blown air flow. .. Are blown from the air outlet 11 toward the lower floor surface in the room at a predetermined blowing angle. Correspondingly, the inside air is sucked from the air suction port 13 by the exhaust fan 39 with a strong suction force.

Therefore, in this configuration, when the air supply fan 38 is driven, the outside air and the inside air introduced into the air supply chamber 3 from the air supply duct 6 and the inside air introduction ports 19, 19,. The air is mixed through the air supply passage 16 which is the recirculation type air supply passage, and is supplied to the air outlet 11 as a stable swirling flow having a uniform flow velocity while efficiently swirling. Then, when passing through the air outlet passage of the air outlet 11, it has the same swirling direction as that of the supplied swirling flow, has a predetermined swirling angle larger than the swirling angle, and has a predetermined interval in the circumferential direction. The swirl flow generating stators 12, 12,... Provided while being provided further impart a larger swirl direction vector, resulting in a stronger spiral swirl air flow (see the thick arrow) and the lower heating cooker. It is blown obliquely toward the periphery of 2.

As a result, the downward spiral airflow forms an air curtain surrounding the exhaust gas such as smoke emitted from the cooking appliance 2 so as not to diffuse into the surroundings, and has a central axial direction. On the inner side, a tornado-shaped swirling intake flow (see a thin-line arrow) having a large suction force rising upward from below is formed by a large suction force of the exhaust fan 39 in the opposite direction.

As a result, it is possible to reliably exhaust and purify contaminated air such as smoke and exhaust gas from the heating cooking utensil 2 wrapped by the air curtain formed by the spiral downward swirling airflow. .

As a result, according to the ventilating apparatus of the present embodiment, it is possible to provide a ventilating apparatus with improved air supply / exhaust capability and sufficiently high ventilation performance.

In this case, in the ventilator, as described above, the inside air is introduced at the inside air introduction ports 19, 19,. For example, in both winter and summer, the amount of air introduced from the outside can be prevented from exceeding the amount of exhaust air to the outside, so that the cooling and heating load does not increase.

In the ventilating apparatus, in addition to the built-in type air supply / exhaust fans 38 and 39 as described above, the air supply duct 6 further includes an air supply duct fan 6 for introducing outside air.
However, the exhaust duct 7 is provided with a separate duct fan 8 for exhausting the inside air.

Therefore, effective ventilation performance can be ensured even when the arrangement distance of the supply / exhaust ducts 6 and 7 is long, for example, when the ventilation device is applied to a building.

(Other Embodiments) It is to be noted that any of the above-described first, third, and fourth embodiments can be used as in the usage example of FIG. 8 of the second embodiment, for example. In this case, it is particularly advantageous that the room temperature can be maintained at a desired temperature by changing the inside air introduction amount as described above.

[Brief description of the drawings]

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

FIG. 2 is a top view of the same device.

FIG. 3 is a bottom view of the same device.

FIG. 4 is a schematic diagram for explaining the operation of the device.

FIG. 5 is a schematic indoor side view for explaining the operation of the device.

FIG. 6 is a sectional view of a ventilation device according to a second embodiment of the present invention.

FIG. 7 is a top view of the same device.

FIG. 8 is a view showing a use form of the device.

FIG. 9 is a sectional view of a ventilation device according to a third embodiment of the present invention.

FIG. 10 is a sectional view of a ventilation device according to a fourth embodiment of the present invention.

FIG. 11 is a bottom view of the same device.

[Explanation of symbols]

1 is a ventilator, 2 is a cooker, 3 is an air supply chamber, 4 is an exhaust chamber, 5 is a straightening plate, 6 is an air supply duct, 7 is an exhaust duct, 8 is an air supply duct fan, and 9 is an exhaust fan. Duct fan, 10 a partition, 11 an air outlet, 1
Reference numeral 2 denotes a swirling flow generating stator, 13 denotes an air inlet, 16 denotes a recirculating air supply ventilation passage, 17 denotes an exhaust space, 19 denotes an inside air inlet, 20 denotes a variable opening / closing damper, 30 denotes a deodorizing device, 33
Is a rectifying grid, 38 is an air supply fan, and 39 is an exhaust fan.

 ──────────────────────────────────────────────────続 き The continuation of the front page F term (reference) 3L056 BD04 BF02 3L058 BH02 BH04 BH09 BJ05 BK01 BK09

Claims (5)

[Claims] 1. An air supply means (3, 6, 8,...) Which introduces outside air and turns it into a spiral swirling vortex (F ₁ ) and blows it into a room.
11, 12) and the air supply means (3, 6, 8, 11, 1)
Exhaust means (4, 7, 9, 13) which is located inside 2) and inhales the internal air inside the spiral swirling flow (F ₁ ) as a spiral swirling flow and exhausts it to the outside. In the ventilating device, the outside air introduction amount (Qf) of the supply air amount (Qa) blown out by the air supply means (3, 6, 8, 12) is used.
or) is zero or more and the exhaust means (4, 7, 9, 1)
3) A ventilating device characterized in that it is configured to have an exhaust air volume (Qout) exhausted by (3) or less. 2. Adjustment of the outside air introduction amount (Qfor) in the supply air amount (Qa) by the air supply means (3, 6, 8, 12).
2. The ventilation device according to claim 1, wherein the ventilation is performed by mixing and circulating room air with the outside air introduced at the air supply means (3, 6, 8, 12). 3. An air supply chamber (3) into which outside air flowing from an air supply duct (6) is introduced in a swirling direction, and an exhaust duct (7) provided concentrically inside the air supply chamber (3). Exhaust chamber (4) for exhausting inside air through
A recirculating ventilation path (16) formed between the exhaust chamber (4) and the air supply chamber (3);
The air supply chamber (3) is provided on an opening surface on the lower end side,
An air outlet (11) for blowing air in a swirling direction via the swirling flow generating stators (12), (12), and an air inlet provided on the lower end side opening surface of the exhaust chamber (4). (13), the external air introduction amount (Qfor) in the supply air volume (Qa) blown out from the air outlet (11) of the air supply chamber (3) is:
A ventilator characterized by being configured to have an exhaust air volume (Qout) exhausted from the exhaust chamber (4) which is not less than zero. 4. An air outlet (1) of an air supply chamber (3).
The adjustment of the outside air introduction amount (Qfor) in the supply air amount (Qa) blown out from 1) is performed by forming an indoor air introduction port (19) in the air supply chamber (3) and controlling the outside air introduced. The ventilation device according to claim 3, wherein the ventilation is performed by mixing and circulating room air. 5. A damper (20) having a variable opening / closing amount is provided at a portion (19) of the air supply chamber (3) for introducing indoor air, and the damper (20) allows the room air to be introduced to the outside air. 5. The ventilation device according to claim 4, wherein the mixing amount is arbitrarily adjusted.