JP2003251228A - Airflow jetting nozzle and blowing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airflow jetting nozzle for jetting airflow which draws a spiral locus in a conical form to blow water drops away for dehydration. <P>SOLUTION: A jetting body 30 is incorporated in a swirling chamber 25 so that a force receiving part swings in a tilted attitude in the swirling chamber 25 with a jetting port 35 facing the outside of the swirling chamber 25, and the airflow is introduced into the swirling chamber 25 from the tangent direction. The difference of the flow rate around the force receiving part is induced in the swirling flow occurring in the swirling chamber 35 in this way, the force induced according to the difference of the flow rate is given to the force receiving part, and the force receiving part in the tilted attitude in the swirling chamber 25 causes the swing motion of the jetting body 30 to jet the airflow in the swirling chamber 25 from the jetting port 25. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airflow ejection nozzle and an air blower for blowing air toward a human body and drying or blowing away water and water droplets attached to the human body.

[0002]

2. Description of the Related Art The prior art will be described by taking the hand of a human body as an example. For example, as shown in JP-A-5-293055, the hand is dried by using a high-speed air stream. Drying devices are known. In such a drying device, a high-speed air flow generated by a turbo fan is blown out from a nozzle, and the high-speed air flow is applied to the hand to blow away water droplets adhering to the hand to dry the hand. ing. Also, by moving the nozzle in the drying chamber,
The invention has been made to reduce the drying time by eliminating the hassle of moving hands.

[0003]

However, in such a structure, a plurality of nozzles are required to eject a high-speed airflow over the entire hand, or a high-speed airflow is ejected from the plurality of nozzles, resulting in a large size. I needed a turbo fan. Further, when moving the nozzle in the drying chamber, it was necessary to combine a motor with a gear mechanism, a crank mechanism, and the like. Therefore, there are problems that the device itself becomes complicated and large, noise is generated, and cost is increased.

The airflow jet nozzle of the present invention has been made to solve such a problem, and an object of the present invention is to make a fan and a device complicated, upsized, and costly.
It is intended to dry a human body or a material to be dried by ejecting a high-speed airflow over a wide range without the problem described above, and when drying hands, etc. without using a special device, The present invention proposes an airflow ejection nozzle that eliminates the troublesomeness of slowly moving and an air blower using the same.

[0005]

In order to achieve the above object, a first aspect of the present invention is an air flow jet nozzle which has a jet port and jets a supplied air flow from the jet port. The airflow ejection nozzle includes an inflow chamber into which an airflow flows, an ejection part which is incorporated in the inflow chamber and has the ejection port, an indoor part which is continuous with the ejection part and is located in the inflow chamber, and an inflow chamber. A swingable jetting body having a conduit for guiding the airflow to the jet outlet, and the airflow flowing into the inflow chamber causes a swirling flow around the indoor portion along the inner peripheral wall surface of the inflow chamber. And an inflow mechanism that guides an airflow to the inflow chamber, wherein the inflow mechanism, in the swirl flow,
It is characterized in that a flow velocity difference is generated around the indoor region, and a force generated based on the flow velocity difference is exerted on the indoor region.

The airflow jet nozzle of the present invention having the above-mentioned structure guides the airflow from the inflow mechanism to the inflow chamber and causes a swirl flow around the indoor portion in the inflow chamber. Since this swirling flow causes a flow velocity difference around the indoor part, a force is generated in the inflow chamber based on the flow velocity difference. This force is of the same quality as the lift force that acts on the object when the object moves in the fluid, based on the difference in velocity of the fluid sandwiching the object. Therefore,
In the following description, the force based on the flow velocity difference will be referred to as lift force for convenience of explanation. Thus, the indoor site enters the inlet chamber, lift F _L when the swirling flow around the interior portion is awake at the time of its occurrence, the speed of the indoor site is zero, relatively, Velocity V of the swirling flow
Affected by [m / sec]. And this lift F
_L is a physical quantity corresponding to the maximum projected area S of the indoor part that receives the lift, its length is L [m], and the density of the airflow is ρ [k.
g / m ³ ], it is represented by the following equation. C _L in the equation is a lift coefficient. ^{_{F L = (ρ · V 2}} · C L · L) / 2 [N] Note that, in this way the lift _{F L} acts on chamber parts, drag force ^{_{F D (= (ρ · V}} 2 · The room site as a result C _D
・ L) / 2 [N]) also works. This C _D is the drag coefficient.

Considering the situation where a swirling flow around the indoor portion occurs in the inflow chamber, as described above, the lift acts on the indoor portion. This lift acts outward from the central side in the swirling flow on the side where the flow velocity of the swirling flow around the indoor part is large. On the other hand, since the indoor portion can swing in an inclined posture in the inflow chamber, it is tilted by receiving the lift force, is inclined toward the inflow chamber wall side, and moves in the resultant force direction of the lift force and the drag force. This resultant force acts in the direction of moving the indoor part along the flow direction of the swirl flow because the drag force is along the flow direction of the swirl flow.

In this case, the situation of the flow velocity difference of the swirling flow around the indoor portion also changes, and the lift / drag force in this new situation causes the indoor portion to move in the swirling flow direction in an inclined posture. . For this reason, the ejecting body swings around and revolves in the inflow chamber. Hereinafter, this revolution is referred to as a swing revolution. Since the ejection port of this ejection body faces the outside of the inflow chamber, the airflow guided to the ejection port is ejected in a conical shape with the swinging point of the ejection body as the apex. Even in such a jet, it revolves following the swinging revolution of the ejector. Such a jet is sometimes referred to as a revolution jet. Moreover, when the indoor part receives the lift force and inclines toward the inflow indoor wall side as described above, the indoor part is directly pushed by the swirling flow of the inflow chamber. Therefore, the indoor part receives the kinetic energy directly from the swirling flow and moves in the swirling flow direction in an inclined posture, and the swinging orbiting of the ejection body is promoted.

The kinetic energy A as used herein means that which can be defined by the following equation, and is energy that is governed by the flow of air (swirl flow). A = (ρ · V ² · Q) / 2 [W] where ρ is the density of air and Q is the instantaneous flow rate [m ³ / se
c], and V represents the velocity of the swirling flow. The centrifugal force is defined by the following equation, and is a force generated by the revolution of an indoor part due to the flow of air or swirling, which is a force generated in the radial direction of the revolution or swirling. F = MV ² / R [N] Here, M is the mass of the ejected body, V is the revolution speed, and R is the revolution radius.

As a result, according to the airflow jet nozzle of the present invention, a conical airflow jet can be realized without using a complicated device for driving the nozzle itself, thereby jetting the airflow over a wide range. Therefore, it can be applied to the human body or the object to be dried.

Moreover, in order to eject the air into such a wide area, it is sufficient to inject air into the inflow chamber to generate a swirl flow, and the swirl flow causes the ejector to swing around the inflow chamber. Therefore, the swinging revolution of the ejecting body is caused only by the swirling flow of air, and a device such as a motor is not required to realize this swinging revolution. Therefore, there is an advantage that noise and vibration due to motor driving are not generated and the noise and vibration are extremely excellent. In addition, the swinging revolution of the ejector to realize the above-mentioned ejection to a wide area is
This can be caused by incorporating the above-mentioned ejector into the inflow chamber and generating a swirling flow by introducing an airflow into the inflow chamber. Therefore, the fan can be significantly downsized as compared with the case where the air flow is continuously ejected in a wide range. Further, the structure can be simplified and the cost can be reduced. The device can be made compact by simplifying the configuration.

Further, the occurrence status of the flow velocity difference around the indoor part can be adjusted by the state of the introduction of the air flow into the inflow chamber, the shape of the inflow chamber, and the like. Therefore, you can also adjust the swinging orbit of the spout,
This makes it possible to diversify the ejection mode. For example, by increasing the lift force, drag force, and centrifugal force described above, the ejector can be swung and orbited at high speed, and the trajectory of the orbital swing can be facilitated by stabilizing the condition of the orbit of the ejector. It can be made stable and the ejection can be stabilized.

By rotating the ejecting body at a high speed in this manner, the point at which the ejected airflow hits the human body also moves at high speed. That is, by increasing the revolution frequency defined by the period of the swing revolution, it is possible to give the illusion that the human body is receiving the airflow over the entire arrival range of the airflow (the collection point of the arrival points). Further, even in the case of giving the illusion that the whole is receiving the airflow, the airflow is actually moving at a high speed. When the human body is dried by using such an air flow that moves at high speed, there are the following advantages.

When the water droplets adhering to the surface of the human body are blown off for drying, it is necessary to blow a high-speed air stream in order to blow off the water droplets. However, when the object to be dried is, for example, a hand, the shape is not a flat shape but a complex bulge. Therefore, even if a continuous air flow is blown to this complicatedly raised surface, a part where the air flow is accumulated or the air flow stagnates occurs, and water droplets stay at this part. However, like the product of the present invention, when the airflow itself moves at a high speed, that is, it sways, this stagnation site also moves at a high speed, so that water drops do not stagnate at a specific site and stay. . Therefore, the user adjusts to the state of the water droplets staying,
Eliminates the need to constantly move hands. Therefore, the water droplets can be blown out more efficiently than the continuous air flow.
This applies not only to the hands and the human body, but also to the drying of the article. Also, when the water droplets are very small, the water droplets take body temperature from the surface of the human body and evaporate.However, as described above, the water droplets can always be moved at high speed, so always move on the human body surface. Since it does not stay in the same place, even if the body temperature in the water drop contact part drops, it is possible to prevent the drop in body temperature in the contact part by constantly changing the place. Therefore, evaporation of water droplets is also promoted, so that the drying can be efficiently performed.

In order to solve the above problems, the second aspect of the present invention is
The jet body is composed of a pipeline wall that penetrates the pipeline in the jet direction of the jet body, and a slit that is elongated in the circumferential direction of the indoor portion and communicates with the pipeline wall. Is characterized by. This has the following advantages.
The airflow ejected from the ejector is supplied from the inflow chamber through the conduit. Further, since the pipeline has a pipeline wall that penetrates in the jet direction of the jet body, the air flow in the inflow chamber swirls as described above and exerts a force on the indoor portion, It flows into the conduit wall that opens at the bottom of the ejector. Further, since the pipe line has a slit that is elongated in the circumferential direction of the indoor portion and has a slit that communicates with the pipe line wall, the air flow in the inflow chamber swirls as described above, While exerting a force on the indoor part, it flows into the conduit wall through a slit opened in the inflow chamber.

Therefore, the air flow in the pipe wall becomes the following flow due to the inflow into the pipe wall from the lower portion of the jet body and the slit. First, while the air flow swirls in the swirl chamber and flows into the duct wall at the lower part of the ejector, the air flow in the duct wall also becomes a swirl flow, and from the lower part of the ejector to the upper ejection port. Flowing toward. in this case,
The velocity distribution of the swirling flow has a large swirling velocity on the outer peripheral side. Further, the airflow flowing in from the slit elongated in the circumferential direction, which is provided above the jet body, removes the axial component of the jet body by the slit elongated in the circumferential direction in the swirling flow, and Only the swirl component and the flow component toward the radial center of the swirl flow into the pipe wall from the outer periphery of the ejection body toward the inner center. Therefore, the flow in the pipe wall is such that the swirl flow flowing upward from the lower portion of the ejector interferes with the swirl flow flowing toward the center, so that the above-described velocity distribution is swirl larger on the center side. It has a speedy distribution.

Therefore, if an air flow having such a swirling velocity distribution is ejected from the ejection port, an air flow having a higher agility can be ejected, and the air agitation with a high agility can be emitted by the ejector. Since the airflow is ejected while revolving, the airflow itself can be moved at a high speed while reaching a long distance without being dispersed. By ejecting such an airflow to dry the human body and articles, it is possible to dry the area away from the jet outlet, allowing a wider range of drying, and setting the nozzle arrangement more freely. You will be able to do it.

In order to solve the above problems, the third aspect of the invention is
The pipe wall is characterized in that it has a taper shape such that the wall surface on the jet outlet side of the wall surface which the slit communicates with and opens has a smaller diameter toward the jet outlet. With this configuration, when the airflow flows from the slit to the conduit wall, the taper shape on the ejection port side causes the airflow to flow from the slit toward the center of the ejection body to the ejection port side. Along the tapered wall surface, the flow can be changed to have a large velocity component in the axial direction of the ejection body. Here, the effect of causing such a flow along the wall surface is known as the Coanda effect. Further, since the wall of the pipe line has a taper shape with a small diameter toward the ejection port, the air flow flowing in from the slit and the swirling flow from the lower part of the ejection body are combined to form the pipe wall. It can be ejected from the ejection port, and this combined air flow has a large velocity component in the ejection direction of the ejection body and a swirling component.

Therefore, the air flow ejected from the ejection port has a large velocity component in the ejection direction while maintaining a large swirl velocity on the center side of the velocity distribution, and does not lose the astringency, so that it reaches farther. , The airflow itself can be moved at high speed while reaching the airflow. By ejecting such an airflow to dry the human body and articles, it is possible to dry the area away from the jet outlet, allowing a wider range of drying, and setting the nozzle arrangement more freely. You will be able to do it.

In order to solve the above problems, the fourth aspect of the invention is
It is characterized by having a guide portion for regulating the inclination angle of the jet body. With this configuration, the guide portion can reliably regulate the inclination angle of the ejecting body, and thus the revolution trajectory of the air flow ejected from the ejecting body can be reliably regulated. Therefore, the air flow is not ejected at an ejection angle more than necessary, and there is no waste. Further, the device can be downsized.

In order to solve the above problems, the fifth aspect of the invention is
The inflow mechanism is characterized in that it has a nozzle conduit that is eccentrically connected to the inflow chamber and communicates with the peripheral wall of the inflow chamber. With this configuration, immediately after the airflow first flows into the inflow chamber, the inflowing airflow reliably causes a swirling flow around the indoor portion along the inflow chamber inner wall with a flow velocity difference. As a result, the swinging orbit of the ejecting body and the ejection state can be stabilized.

In order to solve the above-mentioned problems, claim 6
The ejection body incorporated in the inflow chamber is characterized in that the ejection portion is provided as a columnar body having a diameter smaller than that of the indoor portion. In this way, the ejector faces the outside of the inflow chamber with the ejection port on the small diameter side of the inflow chamber, and revolves the indoor part as described above, so that the central part of the swinging motion of the ejector (indoor part) is also revolved. It has a small diameter. Therefore, the pressure receiving area of the air pressure of the air flow received from the inflow chamber becomes narrow, and the resistance at the central portion at the time of revolution also becomes small. These points are also useful for speeding up and stabilizing the swing revolution of the ejector.

In order to solve the above-mentioned problems, claim 7
The spouting body has a step portion at a connecting portion between the spouting portion and the indoor portion, and the inflow chamber has an opening through which the spouting portion penetrates, and the opening periphery is defined by the step of the spouting body. The feature is that it serves as a seat for the department. Therefore,
When the indoor part is inclined, the stepped portion is received by the opening peripheral edge on the inclined side, and the stepped portion separates from the opening peripheral edge except on the inclined side. That is, the contact of the step portion with the opening peripheral edge is a so-called one-sided contact, and the position of the stepped portion in contact with the opening peripheral edge changes along the opening peripheral edge with this one-sided contact with the swing revolution of the ejection body.
For this reason, the air in the inflow chamber, which is about to leak from the step portion that is not hitting one side, can be made to function as a coolant for frictional heat at the step portion. Therefore, since no special cooling function is required for the step portion and the opening periphery, the simplification of the configuration can simplify the maintenance and inspection / assembly work. Further, since the stepped portion is only one-sidedly contacted during the swing revolution of the ejecting body, the contact between the stepped portion and the opening peripheral edge occurs only in a narrow range. Therefore, the frictional force associated with this contact can be reduced, which is preferable from the viewpoint of preventing wear.

Further, in order to solve the above-mentioned problems, claim 8 is
The airflow jet nozzle according to claim 7, wherein at least one of the step portion and the opening peripheral edge is made of metal. In this case, the stepped portion and the opening peripheral edge come into contact with each other and the injector revolves, so that the frictional heat generated can be conducted and radiated by the metal having high thermal conductivity. Therefore, it is possible to prevent wear due to heat fusion at the contact portion.

In order to solve the above problems, the ninth aspect of the present invention is
The ejection member is characterized in that the indoor portion is inclined with respect to the inflow chamber when there is no inflow of airflow into the inflow chamber. For example, it is assumed that the nozzle (spouting direction) is inclined or parallel to the horizontal plane, and that the spouting body has its interior portion slanted with respect to the inflow chamber when not spouting due to gravity acting on itself. Can be This makes it possible to narrow the space between the indoor portion of the ejection body and the inflow chamber inner wall before the inflow of the air inflow chamber. Therefore, from the beginning of the inflow of air into the inflow chamber, the flow velocity can be increased while the air flow passes through the narrowed region, and the flow velocity difference of the swirling flow can be reliably generated.
For this reason, since the above-mentioned lift force can be surely generated from the beginning of the inflow of air, it is possible to easily stabilize the swinging revolution of the ejecting body and the ejected state. When inclining the ejecting body in this way, the following can be performed. That is, it is possible to provide a protrusion at the center of the bottom surface of the inflow chamber, and the protrusion can incline the indoor portion of the ejector with respect to the inflow chamber when the ejection is not performed. Even in this case, the lift force can be surely generated from the beginning of the inflow of air, and the swinging orbiting / jetting state of the jetting body can be easily stabilized. It is also possible to provide such a projection at the lower end of the indoor portion of the ejection body.

Further, in order to solve the above-mentioned problems, a tenth aspect is provided.
Is characterized in that the jet body causes the revolution while rotating about the axis of the indoor portion. By doing so, it becomes possible for the ejection body to revolve around the axis of the ejection body itself while revolving. Therefore, when the jet body revolves around the wall of the inflow chamber, it is possible to rotate, that is, to roll, so that the jet body or the inflow chamber can roll by not rolling against the frictional force of the contact portion. Wall wear can be significantly reduced.

Further, in order to solve the above-mentioned problems, the present invention is claimed.
Is the airflow jet nozzle according to claim 10, wherein the jet body is configured to connect the pipe line reaching the jet port of the jet portion,
It is characterized in that it has an inclination with respect to the axis of rotation of the jet body. In this way, the trajectory of the air ejected from the ejection port is a combined trajectory of the conical revolution ejection trajectory due to the swing revolution of the ejector and the following trajectory. That is, since the pipe line reaching the ejection port is inclined with respect to the rotation axis of the ejection body, the air flow is also ejected from this ejection port in a conical shape with respect to the rotation axis. Therefore, jetting is performed with a synthetic locus of this jetting locus and the above-mentioned conical orbital jetting locus, and even if the airflow is jetted in a wider range, it is possible to realize jetting without hollow holes. When such a wide range of jets are to be realized, it is sufficient to cause the jet body to rotate without requiring a particular increase in air flow, so that it is possible to perform drying efficiently.

In order to solve the above-mentioned problems, a twelfth aspect is provided.
Has a flexible gripping body for gripping the ejection body, and the gripping body closes the inflow chamber. By doing so, it becomes easy to prevent the above-described rotation of the ejection body from occurring. Further, since the ejection body is grasped by the grasping body to seal the inflow chamber,
Even if the jet body revolves around, no gap is generated, and there is no air leaking from other than the jet port. Further, since there is no contact portion between the opening of the inflow chamber and the jet body, friction does not occur and cooling is not necessary. In addition, when the ejection body performs the above-described revolution, since the grasping body that grasps the ejection body has flexibility, the grasping body is easily deformed to easily revolve. Can be done.

Further, in order to solve the above-mentioned problems, the invention according to claim 13
The gripping body has a cylindrical gripping portion into which the jetting body is fitted and grips the jetting body, and causes the pressure of the airflow flowing into the inflow chamber to act on the outer wall of the tubular gripping portion. It is characterized by that. In this case, the tubular gripping portion itself can be tightened by the air pressure, so that the sealing property of the ejection body can be improved by itself. As a result, the reliability of the seal is improved, and the air leakage from the grip portion can be appropriately suppressed. Moreover, since there is no leakage air from the grip portion, the revolution airflow from the ejection port can be prevented from being disturbed by this leakage air, which is useful for stabilizing the revolution airflow. Furthermore, since the spouting body and the gripping body do not need to be adhered to each other, an adhesive agent and its application step are also unnecessary. Therefore, the manufacturing process can be simplified.

Further, in order to solve the above-mentioned problems, the invention according to claim 14
Is characterized in that the grip body has an outwardly convex bent portion around the grip portion of the ejection body. With this configuration, even if the thickness of the grip body is not extremely thinned, the bending portion is easily deformed in the bending direction, so that the grip body can be further easily deformed. Therefore, it is possible to easily cause the ejection body to swing and rotate while maintaining the strength of the grip body. In addition, the above-mentioned gripping body is an NBR, EPDM,
It can be manufactured from a synthetic rubber such as fluororubber or a thermoplastic elastomer such as polyester, polyolefin or polystyrene, and may be selected according to the conditions of use environment, temperature and humidity.

Further, in order to solve the above-mentioned problems, a fifteenth aspect is provided.
Is an air blower for ejecting an air flow, wherein the air flow ejection nozzle according to any one of claims 1 to 14,
It is characterized by having more than one. This makes it possible to arrange the nozzles in a wide range, and in combination with the high wide range jetting effect of the present invention, it is possible to jet the airflow in a wider range. Therefore, it is possible to dry in a wider range.

Further, in order to solve the above-mentioned problems, the invention according to claim 16
Is an air blower for blowing off water adhering to a human body, and the air blower has the air flow jet nozzle according to any one of claims 1 to 14 and an air flow generator for generating an air flow. The airflow generation device supplies the generated airflow to the airflow ejection nozzle and ejects the airflow. By doing so, since the airflow generation device and the airflow ejection device can be provided inside the air blower, the air blower can be installed in various places, and can be installed in places such as toilets and washrooms. Further, it can be used as a hand dryer, or can be incorporated into the inside of the human body local cleaning device attached to the rear part of the toilet bowl. By using such an air blower, it is possible to exhibit the effect of ejecting a high air flow over a wide range, the effect of blowing off water droplets, the effect of evaporating water droplets, etc., which the airflow ejection nozzle of the present invention has.

Further, in order to solve the above-mentioned problems, the invention according to claim 17
Has the air blower according to claim 16, wherein the air blower is provided in a box, and the box has a drying chamber into which a hand is inserted and the airflow jet nozzle facing the drying chamber. It is characterized in that a hand is inserted into the drying chamber to blow off water droplets attached to the hand. Further, since the airflow jet nozzles are provided so as to face each other, toward the front side and the back side of the hand,
It is possible to eject the airflow at once. If such a blower is used, it is possible to blow off or evaporate the water droplets attached to the hand by simply inserting the hand into the drying chamber due to the high-speed movement of the air flow described above, and the hand can be repeatedly used. There is no need to bother with putting it in and out of the drying room. Therefore, the effect of jetting a high airflow over a wide range, the effect of blowing off water droplets, the effect of evaporating water droplets, and the like such as miniaturization, simplification, and cost reduction of the device, which the present invention has, can be expected.

Further, in order to solve the above-mentioned problems, the present invention is claimed.
The air blower according to claim 17, wherein the airflow jet nozzles provided so as to face each other have different directions of the swirl flow introduced around the indoor portion of the jet body. With this configuration, the airflows ejected from the airflow ejection nozzles provided opposite to each other can be moved in the same direction at high speed, and the jetted airflow is less likely to be disturbed.
Therefore, it is possible to efficiently move the airflow at high speed, and it is possible to perform the drying efficiently.

Further, in order to solve the above-mentioned problems, the present invention is claimed.
The air blower according to claim 16, wherein the air blower is provided at a rear part of the toilet bowl, and after flushing the wash water toward the human body local part to wash the local part, blows air toward the human body local part, The feature is that the water droplets attached to the human body part are blown off. In this way, the airflow jet nozzle of the present invention has a high jetting effect over a wide range of the airflow, a waterdrop blowing effect, a waterdrop evaporation effect, and the like, and achieves downsizing, simplification, and cost reduction of the device. You can Therefore, the toilet can be installed in a narrow space at the rear of the toilet without difficulty, and the human body part can be efficiently dried by moving the air flow at high speed.

Further, in order to solve the above-mentioned problems, the present invention is defined in claim 20.
The air blower according to claim 16, wherein the air blower has a gripping portion that is gripped by a hand, and blows air toward the hair on the human head to blow off water droplets attached to the hair. I am trying. By doing this, the airflow jet nozzle of the present invention has a high, high-speed jetting effect over a wide range of airflow, a water droplet blowing effect, a water droplet evaporation effect, and the like, downsizing of the device, weight reduction,
It is possible to achieve simplification and cost reduction. further,
Since it has a grip portion, it is suitable for being held by hand, and hair can be dried efficiently.

Further, in order to solve the above-mentioned problems, the present invention is set forth in claim 21.
The air blower according to any one of claims 16 to 20, wherein the air blower has a heating device for heating the airflow generated by the airflow generation device, and the airflow generation device generates the airflow. The airflow is heated by the heating device, supplied to the airflow ejection nozzle, and ejected. By doing so, it is possible to provide a blower device having a high drying performance due to the high drying performance of the airflow jet nozzle as described above and the evaporation effect of water droplets by the high temperature airflow heated by the heating device. . Further, conventionally, when a high-temperature continuous flow is applied to a human body or hair, the temperature of the airflow cannot be raised so much in order to prevent the temperature of the human body surface or hair from rising too much. Moreover, in order to prevent the temperature from rising, it is necessary to sway the air flow with a hand or a driving device. However, in the air blower of the present invention, the high-temperature airflow heated by the heating device moves at high speed as the jet body revolves. Therefore, a wide range of drying can be performed without raising the temperature of the human body surface or hair excessively. This is the same as drying the hair with the warm air of the dryer by shaking the dryer by hand and drying the hair while shaking the warm air.

[0038]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of the overall configuration of an embodiment in which the air blower having an air flow jet nozzle of the present invention is applied to a hand dryer. As shown in the figure, the hand dryer 1 has a casing 3 attached to a wall, and a drying chamber 7 which is opened at the upper part of the casing 3 and in which a hand is inserted for drying. Further, the drying chamber 7 is provided in the drying chamber so as to face each other, and has two air flow jet nozzles 20 for jetting an air flow.
And a filter 9 provided in the lower part of the drying chamber 7. Further, in the casing 3, an air flow generator 5
Is provided, the air flow generation device 5 includes a motor 16, a fan 17 that is rotated by the motor 16 to generate an air flow,
It is composed by. Further, the airflow generation device 5 and the two airflow ejection nozzles 20 are communicated with each other by the airflow passage 14, and the airflow generated by the airflow generation device 5 is
It is configured to eject from the air flow ejection nozzle 20. Further, the airflow generating device 5 and the filter 9 are communicated with each other through an intake passage 12, and the airflow generating device is configured so as to be able to suck the air in the drying chamber 7. or,
A hand detection device 11 for detecting the insertion of a user's hand into the drying chamber 7 is provided near the entrance in the drying chamber 7. Further, the air flow generation device 5 and the hand detection device 11 are
It is configured to be connected to a control device 6 provided in the casing 3 for control.

In the hand dryer 1 configured as described above, when the hand is inserted into the drying chamber 7 and the hand is detected by the hand detector 11, the controller 6 causes the hand to be detected. The motor 16 is driven and rotated, and the fan 17 generates an air flow. This airflow is ejected from the airflow ejection nozzle 20 via the air passage 14. Then, by spraying this air current on the hand that has been washed with water and wet, the moisture of the hand is blown off and the hand is dried.

Next, the air flow jet nozzle 20 will be described. FIG. 2 shows a detailed view of the airflow jet nozzle 20,
FIG. 3 is a cross-sectional view illustrating the ejection body 30, and FIG. 4 is the ejection body 30.
It is an external view explaining. As shown in FIG. 2, the air flow ejection nozzle 20 includes a swirl chamber 25 formed in a cylindrical shape as an inflow chamber into which the air flow flows, and the swirl chamber 25 is passed through the blower passage 14 and the swirl chamber inflow passage 23. It is configured to supply airflow. The swirl chamber inflow path 23 is a nozzle line,
It has a passage cross-sectional area smaller than that of the air passage 14, and is connected to the swirl chamber 25 in an eccentric manner with respect to the center of the swirl chamber 25. Therefore, the air flow from the swirl chamber inflow path 23 is
It flows into the swirl chamber 25 from its tangential direction, and the swirl chamber 2
5 A swirling flow swirling along the inner wall is generated. in this case,
Since the water passage cross-sectional area of the swirl chamber inflow path 23 is smaller than that of the blower path 14, the flow velocity of the airflow flowing into the swirl chamber 25 can be increased.

The airflow jet nozzle 20 is provided in the swirl chamber 2
5, the ejection body 30 is incorporated and provided. The ejection body 30 has a small-diameter columnar ejection portion 36 having an air flow ejection port 35, and a large-diameter column force receiving portion 32 continuous with the ejection portion 36. The force receiving portion 32 is located in the swirl chamber 25, receives various forces described below from the swirling flow, and participates in a swing revolution drive of the ejection body 30 described later.

Further, the ejection port 35 has a pipe line 31 for supplying and ejecting an air flow to the ejection port 35, and the pipe line 31 is a pipe line wall 33 penetrating along the central axis of the ejection body 30. , And a slit 40 that is orthogonal to the conduit wall 33 and is elongated in the circumferential direction of the ejection body. The state of air flow ejection by the ejection body 30 having such a configuration will be described later.

Further, the jetting body 30 has a step portion 37 between the jetting portion 36 and the force receiving portion 32, and the step portion 3 is provided in an opening 27 provided above the opening of the swirl chamber 25.
It is inserted and supported with 7 inscribed. Therefore,
When the airflow flows from the swirl chamber inflow path 23 into the swirl chamber 25,
This air flow is applied to the force receiving portion 3 along the inner peripheral wall surface of the swirl chamber 25.
Causes a swirling flow around 2.

Further, as shown in FIG. 2, the ejection body 30 supports the ejection body 30 with the ejection port 35 facing the outside of the swirl chamber 25. In addition, since the ejector 30 has only the small-diameter ejecting portion 36 inserted in the opening 27, the ejecting body 30 can be supported and the force receiving portion 32 can be inclined in each direction in the swirl chamber 25. In addition to enabling the force receiving portion 32 to swing in a tilted posture, the ejector 30 can freely rotate about the center axis of the ejector 30 within the swirl chamber 25. It has become so. These rotations and revolutions are caused by the force receiving portion 32 and the swirling flow, which will be described later in detail.

The downstream wall of the swirl chamber 25 is a taper guide portion 26 having a small diameter on the ejection portion 36 side of the ejection body 30 as shown in the figure. The taper guide portion 26 regulates the maximum inclination angle of the force receiving portion 32, and thus the ejection body 30, and the revolution angle of the ejection body 30. Further, since the air flow jet nozzles 20 face each other and the jet body 30 is provided so as to jet the air flow obliquely downward, when the air flow is not flowing into the swirl chamber, that is, when the air flow is not flowing, Due to its own weight, the ejection body 30 is in contact with the taper guide portion 26 in a state where the force receiving portion 32 having a large diameter is tilted downward.

Here, the state of air flow ejection in the air flow ejection nozzle 20 having the above-mentioned configuration and the behavior thereof will be described.
FIG. 5 shows the force receiving portion 32 after the air flow enters the swirl chamber 25.
Of FIG. 6 and the state of the force applied to the force receiving portion 32 over time, and FIG. 6 is an explanatory diagram illustrating the state of air flow ejection obtained by the force receiving portion 32 taking such behavior. is there. As shown in FIG. 5, the swirl chamber inflow path 2 is now
An airflow is caused to flow into the swirl chamber 25 from 3 (time t0). In this case, since the airflow passes from the blower passage 14 having a large passage cross-sectional area to the swirl chamber inflow passage 23 having a small passage cross-sectional area, it flows into the swirl chamber 25 at a high flow velocity. Therefore, the kinetic energy that can be provided by the collision of the air flow is increased.

Thus, when the air flow enters the swirl chamber 25,
The air flow causes a swirling flow that swirls around the force receiving portion 32 along the inner wall of the swirling chamber 25. The flow velocity in this swirling flow is
The flow velocity Uin is highest in the communication portion of the swirl chamber inflow path 23. There is a difference between the flow velocity Ua and the flow velocity Ub at the place where the inflow airflow first swirls, that is, at the peripheral wall portion 25a on the extension of the opening of the swirl chamber inflow passage 23 and the peripheral wall portion 25b facing the portion. , The relationship between the two is Ua> U
b. That is, the peripheral wall portion 25a to the peripheral wall portion 25b
While the air flow reaches (or swirls) up to, it is affected by flow dispersion in the swirl chamber 25, air flow contact with the inner wall surface of the swirl chamber 25, air flow viscosity, surface friction, etc., and the air flow is decelerated.

Therefore, a flow velocity difference of the air flow occurs around the force receiving portion 32. In this case, although the moving object is the fluid (air flow), the relative relationship between the air current and the force receiving portion 32 does not change from the situation in which the object moves in the fluid. Therefore, when an object moves in the fluid, a situation occurs in which the lift acts on the object based on the speed difference between the fluids sandwiching the object between the airflow in the swirl chamber 25 and the force receiving portion 32. A force having the same quality as the lift acts on the force receiving portion 32. Note that, for convenience, this force is referred to as the lift force, as described above. However, if another phenomenon is used as an example, the fact that the lift force is generated due to the difference in the fluid velocity is as follows. It is similar to the generation of lift force due to the speed difference, that is, the pressure difference.

As shown in FIG. 2, the force receiving portion 32 enters the swirl chamber 25, and at time t0 in FIG. Since the swirling flow of the force receiving portion 32 around which is stopped occurs in this time t0, the lift F _L is the circumferential wall portion 25
It is affected by the flow velocity Ua [m / sec] of the swirling flow of a. Then, the lift F _L is the maximum projection area of the force-receiving portion 32 for receiving the lift S [m ^2], when the density of the air flow and ρ [kg / m ^3], is expressed by the following equation. C _L in the equation is a lift coefficient. F _L = (ρ · V ² · C _L · S) / 2 [N] Thus, when the lift force F _L acts on the force receiving portion 32, as a result, the drag force F _D (= (ρ · V ²・ C
_D / S) / 2 [N]) also works. This C _D is the drag coefficient. The maximum projected area S in the above equation is the force receiving portion 32.
Therefore, if the length L of the force receiving portion 32 is increased, the lift / drag can be increased.

As shown at time t0 in FIG.
When a swirling flow around the force receiving portion 32 occurs at, the lift force acts on the force receiving portion 32 as described above. This lift is due to the peripheral wall portion 25a where the flow velocity of the swirling flow around the force receiving portion 32 is large.
It works outward from the central side in the swirling flow on the side of. Meanwhile, the force receiving portion 32, the whirling chamber 25, since an inclined posture is swingably inclined in the direction indicated by the lift F _L receiving and in the arrow F _L. Thus, the force receiving portion 32
There tilts the inner wall of the swirl chamber 25, at time t1, the lift F _L and drag F _D are both acts move in the force direction. This resultant force acts in the direction of moving the force receiving portion 32 along the flow direction of the swirl flow, because the drag force is along the flow direction of the swirl flow.

In this case, the passing interval of the swirling flow becomes narrow on the side where the force receiving portion 32 is inclined, and the swirling flow velocity increases due to this narrowing. Since this situation occurs such that the narrow gap portion moves around the force receiving portion 32, the portion having the largest flow velocity of the swirling flow also moves along the inner peripheral wall of the swirling chamber 25. Therefore,
Since the direction of the lift force _{FL and} the direction of the drag force F _D also change with the movement of the portion having the largest flow velocity, the times t2, t
3, the force receiving portion 32 moves in the flow direction of the swirling flow while keeping the inclined posture as it goes to 3 and t4. When the jet body starts to revolve under the influence of lift and drag force, centrifugal force acts on the jet body in the radial direction of the swirling chamber.
In the present description, the jet body 30 is located at the center of the swirl chamber 25 when the air flow is not flowing. However, as shown in FIG. When it is inclined, the passage interval of the swirl flow in the swirl chamber varies from the beginning of the inflow of the air flow, so that, as described above, the revolving motion of the ejection body 30 is ensured more reliably.

For this reason, the ejecting body 30 swings around the portion supported by the step portion 37, and revolves in the swirling chamber 25 (swinging orbiting). Since the ejection port 35 of the ejection body 30 faces the outside of the swirl chamber 25, the air flow guided to the ejection port 35 through the pipe line 31 reaches the top of the swing center of the ejection body 30. It is ejected in the shape of a cone. Even in such a jet, it revolves following the swinging orbit of the jet body, and becomes the conical orbital jet described above.

Further, while the conical orbital ejection is being performed, the step portion is inserted with the step portion 37 inscribed in the opening portion 27 provided at the upper opening of the swirl chamber 25.・ Supported. In this way, the force receiving portion 32
Is inclined, the step portion 37 is received on the peripheral edge of the opening on the inclined side, and other than the inclined side,
The step portion 37 is separated from the opening peripheral edge. That is, the contact of the step portion 37 with the opening peripheral edge is what is called a one-sided contact, and with the swing revolution of the ejection body 30, the position of the stepped portion 37 in contact with the opening peripheral edge is the stepped portion of the ejection body itself with this one-sided contact. While rolling against the contact resistance of the portion 37, it changes along the peripheral edge of the opening. Therefore, sliding does not occur at this contact portion, and the airflow in the swirl chamber that is about to leak from the step portion 37 that is not one-sided can function as cooling air for frictional heat at this step portion. it can. Therefore, no special lubricant, a lubrication function, or a cooling function is required for the stepped portion and the opening periphery, so that the simplification of the configuration can simplify the maintenance and inspection / assembly work.

Further, during the swinging revolution of the ejecting body, the stepped portion is only rolling on the opening rim while making one-sided contact, so that the contact between the stepped portion and the opening rim is in a narrow range and wear occurs. do not do. Therefore, the frictional force associated with this contact can be reduced, which is preferable from the viewpoint of preventing wear. In addition, since the ejector is configured to freely roll under the force of the water flow described above,
The frictional force does not contribute as a resistance to the revolution. Therefore, the swinging orbit of the ejector can be performed at high speed.
In this way, the swirl chamber is
An annular ridge protruding toward the step may be provided on the peripheral edge of the opening. In this case, since the stepped portion only comes into contact with the annular protrusion in one-sided contact, it is useful for stabilizing the one-sided contact and the above-mentioned wear prevention. Further, if the step portion is formed into an inclined surface shape, it is advantageous in terms of stabilizing one-sided contact and preventing the above-mentioned wear.

[0055] In addition, the force-receiving part 32 as described above lift _{F L}
When the inner wall side of the swirl chamber 25 is inclined under the influence of, the force receiving portion 32 receives the reaction force F _D in the direction directly pushed by the swirl flow of the swirl chamber 25. Therefore, the force receiving portion 32 in the inclined posture moves under the influence of the centrifugal force described above in the inclined posture and moves in the flow direction of the swirling flow.
The swinging revolution of 0 is promoted.

Here, the state of the jet body 30 until the air flow is jetted and its behavior will be described. As mentioned above,
The ejection body 30 is provided with a force receiving portion 32 arranged in the swirl chamber 25. Further, the force receiving portion 32 is provided with a pipe line 31 having a pipe line wall 33 communicating with the injection port 35 and penetrating and opening in the axial direction of the jet body 30. The air flow inside the pipe wall 33 through the injection port 35
Is being supplied to. Further, the conduit 31 has a slit 40 which is orthogonal to the conduit wall 33 and is elongated in the circumferential direction of the force receiving portion 32. Therefore, the air flow in the swirl chamber is also supplied from the slit 40 opened in the swirl chamber and is supplied to the injection port 35 through the pipe wall. The merging wall surface of the slit 40 and the conduit wall 33 is
A taper conduit 41 is formed with a gentle taper on the jet outlet side.

Therefore, the flow in the pipe 31 is as follows. First, while the air flow swirls in the swirl chamber 25 and flows into the pipe wall 33 below the jetting body 30, the air flow in the pipe wall also swirls. From the lower part of the ejection body, it flows into the upper ejection port while swirling. In this case, the velocity distribution of the swirling flow has a large swirling velocity on the outer peripheral side close to the wall surface of the conduit due to the centrifugal force of the swirling flow itself. or,
The airflow that flows in from the slit 40 that is elongated in the circumferential direction and that is provided above the ejection body 30 has the axial direction component of the ejection body 30 removed by the elongated slits in the circumferential direction among the flow components. Of the swirl component and the flow component of the swirl toward the center in the radial direction of the swirl from the outer periphery of the ejection body 30 toward the inner center, and the flow flows into the conduit 31. Therefore, the pipe 3
The flow in 1 is a combination of a swirl flow that flows upward from the lower part of the ejection body and a flow that flows toward this center, and the flow having a large swirl speed on the outside described above is at this center. Due to the flowing flow, the velocity distribution is further toward the center side, and the velocity distribution after merging becomes a distribution with a large swirling velocity on the center side.

Therefore, if an air flow having such a swirling velocity distribution is ejected from the ejection port 35, an air flow having a higher agility can be ejected, and the air having a high agility can be ejected from the ejection member. Since the air jets 30 while revolving, the jetted airflow can reach a long distance without being dispersed, and the airflow itself can be moved at high speed. If such a stream of air is ejected to dry the human body or articles, it is possible to dry the part away from the ejection port, which makes it possible to dry a wider area, and the nozzle arrangement can be set more freely. Like

Here, the state of such revolutionary ejection will be described with reference to the drawings. As shown in FIG. 6 and FIG. 7, when the ejection body 30 revolves around the head as described above, the ejection port 35 revolves while changing the ejection direction as the ejection body 30 revolves around the head. Therefore, the ejection port 35 ejects the airflow while drawing a spirally expanded orbit, and as a result, realizes a conical revolution ejection. Therefore, the jet trajectory of the air flow can be made a trajectory of a conical revolution jet having a trajectory much larger than the trajectory of the jet outlet 35, and the air stream can reach a wide range. Therefore, according to the hand dryer 1 of the present embodiment, since the conical revolving jet can be realized without driving the nozzle itself, the flow rate is much smaller than that in the case where the air flow is continuously jetted in a wide range. Therefore, the airflow can be ejected over a wide range. As a result, the air flow can be made to reach a wide range and the water droplets can be blown away, that is, the wide range can be dried.

Here, the advantages of hand drying using such a hand dryer 1 will be described. As described above, if the spouting body revolves at high speed, the point at which the spouted airflow reaches the hand or the human body also moves at high speed. That is, by increasing the revolution frequency defined by the period of the swing revolution, it is possible to make the illusion that the hand is receiving the airflow over the entire arrival range of the airflow (the collection point of the arrival points). Further, even in the case of giving the illusion that the whole is receiving the airflow, the airflow is actually moving at a high speed.

On the other hand, when the water droplets adhering to the surface of the human body are blown off for drying, it is necessary to blow a high-speed air stream in order to blow off these water droplets. However, when the object to be dried is, for example, a hand, the shape is not a flat shape but a complex bulge. Therefore, even if a continuous air flow is blown to this complicatedly raised surface, a part where the air flow is accumulated or the air flow stagnates occurs, and water droplets stay at this part. However, like the hand dryer 1 of the present invention, when the airflow itself moves at a high speed, that is, when it sways, this stagnation site also moves at a high speed. It never stays. Therefore, it is not necessary for the user to constantly move his or her hand in accordance with the state of water droplets remaining.
Further, it is not necessary to move the nozzle itself instead of moving the hand. Therefore, the water droplets can be blown out more efficiently than the continuous air flow.

Further, since it is not necessary to blow out the air flow at the same time at the same time, the air pressure can be maintained and the air flow can be reduced, so that the fan can be downsized and the PQ of the fan can be reduced.
By utilizing the characteristics and utilizing the higher wind pressure area of the fan characteristics, the wind speed of the jetted airflow can be increased without increasing the size of the fan, and by using this higher speed airflow, the efficiency can be further improved. You can dry your hands well.

This applies not only to the hands and the human body, but also to the drying of articles. Also, when the water droplets are very small, the water droplets take body temperature from the surface of the human body and evaporate.However, as described above, the water droplets can always be moved at high speed, so always move on the human body surface. Since it does not stay in the same place, even if the body temperature in the water drop contact part drops, it is possible to prevent the drop in body temperature in the contact part by constantly changing the place. Therefore, evaporation of water droplets is also promoted, so that the drying can be efficiently performed.

Moreover, in order to reach the airflow over such a wide range, it is sufficient to inject the airflow into the swirl chamber 25 to generate a swirl flow, and the swirl flow causes the ejection body 30 to swing and revolve. In other words, when landing on a wide area, the movable member can be only the small ejector 30 which can be incorporated into the swirl chamber 25 provided in the nozzle. In addition, the swinging revolution of the ejecting body 30 is caused only by the swirling flow of the air flow, and no actuator such as a motor is required. Therefore, the hand dryer 1 of the present embodiment does not generate noise or vibration due to the driving of the actuator, and is extremely excellent in quietness / vibration.

In addition, since it is not necessary to engage gears and the like, dust and the like are not caught, and the reliability of ejection can be improved. In combination with the fact that this gear or the like is not necessary, the rolling resistance to the opening 27 is made small by making the ejection portion 36 have a small diameter, so that there is no energy loss when the ejection body 30 revolves around the head, and the rotation of the head revolves faster. be able to.

Further, in addition to having a small moving part, it does not have an electric drive part such as an actuator, so that the hand dryer 1 can be miniaturized. Furthermore, the durability of the electrically driven portion does not become a problem, and electrical wiring to the tip of the nozzle is not required. Therefore, it is possible to simplify the assembling work and the maintenance work, simplify the structure, and eventually reduce the cost without considering the leakage.

In the present embodiment, the flow velocity of the inflow airflow into the swirl chamber 25 is increased by assuming that the swirl chamber inflow passage 23 for allowing the airflow inflow into the swirl chamber 25 has a small water passage cross-sectional area. Swirl room 2
Airflow velocity flowing into 5 defines a lift F _L as previously described. Therefore, if the swirl chamber inflow passages 23 having various water passage areas are prepared and these are selectively used,
Other lift F _L acting on the force receiving portion 32, the drag-centrifugal force can be adjusted. These forces also determine the frequency of the swinging revolution of the ejection body 30. Therefore, by adjusting the water passage cross-sectional area of the swirl chamber inflow path 23 or selecting the swirl chamber inflow path 23, the ejector 30
You can also adjust the frequency of the swinging revolution. Further, by freely setting the frequency of revolution, it is possible to create air streams of various frequencies suited to the purpose of drying.

In the above-described embodiment, since the ejecting body 30 is supported by the opening 27 so as to be rotatable, a frictional force is generated at the position where the opening 27 is supported at the time of swinging and revolving. Further, due to the contact with the taper guide portion 26, friction also occurs in the contact. And the situation of occurrence of this friction,
The jet 30 is caused to rotate about its own central axis in balance with the above-mentioned force and kinetic energy received by the force receiving portion 32 of the jet 30. The direction of this rotation is determined by the above balance and can be the same direction as the swirling flow or the opposite direction.

Further, the revolving direction of the jet body 30 and the air flow jet is
Although it is determined depending on the swirling direction of the air flow in the swirling chamber, in the hand dryer 1 of the present embodiment, it is desirable that the revolving directions of the air flow jetting nozzles 20 provided facing each other be different from each other. By doing so, the revolution directions of the airflows jetted oppositely are different from each other, but the revolution directions of the airflows at the merging points can be made the same. Therefore, at the time of merging, the speed difference between the air flows becomes small and turbulence does not occur, so that it is possible to perform drying efficiently, and noise due to air turbulence does not occur.

In the ejector 30 of the present embodiment, the portion directly receiving the kinetic energy of the swirling flow has a cylindrical shape, but the shape is not limited to a cylindrical shape, and a triangular prism, a quadrangular prism,
It can also be a polygonal prism such as a hexagonal prism. Further, the weight of the force receiving portion 32 can be increased or decreased depending on its shape, size, material, or the like. Due to the increase or decrease in weight, the revolution speed when receiving the drag force or lift force acting on the force receiving portion 32,
Not only can the centrifugal force itself be increased / decreased, but also the frictional force with the taper guide portion 14 and the inertial force of the ejection body itself can be changed. Therefore, it is possible to change the number of revolutions of the ejection body 30 about the swinging revolution.

Next, another modification will be described.
This modification is characterized in that the ejection body is held by a flexible holding body. FIG. 8 is a diagram illustrating a modified example of the airflow jet nozzle 60, and FIG. 9 is a diagram illustrating a gripper used in the present embodiment in a longitudinal sectional view. As shown,
The air flow ejection nozzle 60 includes the ejection body 30 in the swirl chamber 25, and has the flexible grip body 5 that supports the ejection body 30 on the ejection port 35 side. Further, in the grip body 5, the bottom portion of the bent portion 55 is a thick-walled fixing portion 56, and the fixing portion 56 is pressed by a grip body holding member 64 to be fixed to the airflow ejection nozzle 60. Further, the grip body 5 has a cylindrical grip portion 5 at the center.
8 and the ejection portion 36 of the ejection body 30 is attached to the grip portion 58.
Are fitted to support the ejection body 30.

Further, the grip body 5 is made of synthetic rubber or thermoplastic elastomer, and can be easily deformed by having the thin bent portion 55. Therefore, the ejection body 30 is similar to the ejection body described above because the grip body 5 is easily deformed.
It is said that swinging orbiting is possible. A taper guide portion 66 for regulating the inclination of the ejection body 30 is fixed to the ceiling of the swirl chamber 25.

The use of such an air jet nozzle 60 in the hand dryer 1 or the like has the following advantages. When the air flow is supplied to the swirl chamber 25, the ejector 30 revolves around the head as described above, and at this time, the swirl chamber 25 is pressurized by the air flow. Therefore, the air flow in the swirl chamber reaches the periphery of the grip portion 58 of the grip body 5 through the gap between the taper guide portion 66 and the ejection body 30, and exerts an air flow pressure on the outer wall of the grip portion 58. Grip 58
Receives the pressure of this air flow, and the spouted portion 36 that has been fitted is
Is tightened from the outside, the sealing property between the ejection body 30 and the grip body 5 is enhanced. As a result, the reliability of the seal of the ejection body is increased, and the leakage of the airflow from the grip portion 58 can be suppressed appropriately and surely. Moreover, since the leakage of the air flow from the grip portion 58 does not occur, the revolution air flow from the ejection port 35 can be prevented from being disturbed by the leaked air flow, which is useful for stabilizing the revolution water discharge.

Further, since the jetting body 30 is supported by the gripping body 5 without the need for adhesion, an adhesive and its application step are also unnecessary. Therefore, the manufacturing process and the assembling process of the airflow ejection nozzle 60 can be simplified, which is also beneficial for cost reduction. Further, the above-described tightening can surely and easily prevent the above-described rotation of the ejection body 30 from rotating.

Next, another modification will be described.
This modification is characterized in that the passage communicating with the ejection port provided in the ejection body 70 is provided so as to be inclined with respect to the central axis of the ejection body. FIG. 10 is a diagram for explaining the ejection body 70 in a vertical cross-sectional view, and FIG. 11 is a diagram for explaining the appearance of the ejection body 70. Further, FIG. 12 shows an air flow ejection nozzle 9 using the ejection body 70.
It is a figure explaining 0 as a longitudinal section. As shown,
The ejection body 70 has the ejection portion 36 supported by the opening 27.
In addition, a jet port 75 communicating with the pipe 71 is provided. The conduit 71 is formed in a state of being inclined with respect to the central axis (rotational axis) of the ejection body 70. Even in this ejector 70,
Similar to the ejecting body 30, it has a slit 40 and a taper conduit 41, is supported by the opening 27, and is provided so as to eject a highly convergent airflow while swinging and revolving. Further, the force receiving portion 32 of the ejection body 70 causes the ejection body 70 to revolve and rotate by receiving a force similar to that of the ejection body 30.

Therefore, when the jet body 70 jets an airflow while revolving and revolving, the jet trajectory from the jet outlet 75 is a combination of the conical trajectory of the revolution jet and the following trajectory. That is, since the ejection port 75 is inclined with respect to the rotation axis, the airflow from the inclined ejection port 75 is
The inclined jet outlet itself changes due to the rotation of the jet body along with the rotation of the jet body, so that the airflow jet takes a conical locus around the axis of rotation. Therefore, the ejection trajectory from the ejection port 75 is a combination of the conical trajectory of the revolution ejection and the above-mentioned conical trajectory.

Therefore, not only can the airflow reach a wider area by the jetting in the combined trajectory,
It is possible to get rid of the void in the arrival range. Moreover,
In this modified example, when such a wide range of jets are realized, it is not necessary to increase the air volume or the wind pressure, and the revolution and rotation of the jet body 70 may be caused, so that the drying can be efficiently performed.

In the above-described embodiment and its modification, at least one of the guide portion and the ejecting body where the nozzle comes into contact with the ejecting portion or the step portion is provided with a metal material, slidability and wear resistance. It is better to use an excellent material. For example, a metal material is most suitable for radiating friction heat, and a resin is polyacetal, nylon, polypropylene, polytetrafluoroethylene, silicone, ABS,
A resin having excellent slidability such as PPS can be used.
Further, in the case of using metal such as stainless steel, the surface roughness may be reduced to improve the slidability.

Next, another embodiment using the airflow jet nozzle 20 will be described. FIG. 13 is an explanatory diagram when the airflow ejection nozzle 20 of the present invention is used in the human body part local drying device 81. FIG. 13 shows a state in which water droplets adhering to a human body part are dried after the human body part is cleaned by a cleaning nozzle (not shown). Human body local dryer 81
Is provided with a nozzle arm 80, and the airflow jet nozzle 20 is provided at the tip of the nozzle arm 80. In this way, after the nozzle arm is advanced into the toilet bowl, a high-speed airflow can be ejected toward the human body part to dry the human body part, and the high-efficiency water droplet blowout of the airflow ejection nozzle 20 of the present invention can be achieved. It can be expected that the effect and the drying effect, and further the device size and cost can be reduced. Also, in order to oscillate the air flow at high speed, it is only necessary to provide a jetting body and a swirling chamber for revolving the jetting body, so the nozzle can be downsized and it is suitable because it does not interfere with the advance in the toilet bowl. ing. Further, as described above, since the airflow has a high convergence, the high-speed airflow can reach from the tip of the nozzle toward the local part, which is suitable for efficient drying.

The nozzle arm 80 may be advanced into the toilet using a motor, or may be advanced into the toilet using the wind pressure of the airflow generator. In addition, in the examples shown in FIGS. 1 and 13, a heating means for heating the airflow ejected from the airflow ejection nozzle 20 may be provided. By doing so, the drying time can be further shortened by the evaporation of water droplets by the heated warm air. Even when a high-speed airflow is applied to the human body, the warm air does not take away the body temperature, so it does not feel cold. Also, even if the temperature of the heated hot air is raised, the air flow itself is oscillating, so it will not become too hot,
It is suitable for the case where the body to be dried cannot be moved while sitting on the toilet bowl, such as the case where the human body is locally dried.

Next, another embodiment using the airflow jet nozzle 20 will be described. FIG. 14 is a diagram for explaining an embodiment in which the airflow jet nozzle 20 of the present invention is used in a hand dryer. As shown in the figure, the hand dryer 90 includes a grip portion 91 for gripping by hand, a fan 95 that generates an air flow, a heater 92 that heats the air flow, and the air flow ejection nozzle 20. The generated airflow is heated by the heater 92 and supplied to the airflow ejection nozzle 20, and the conical airflow ejection described above is performed from the airflow ejection nozzle 20.

In this way, the user can grasp the grip portion 91 and eject this airflow toward the wet hair, and the airflow ejection nozzle 20 of the present invention has a high water droplet ejection effect. In addition, it is expected that the drying effect, size reduction, weight reduction, and cost reduction of the device will be achieved. Moreover, since the jetted airflow oscillates at a high speed, the hot air can be spread over a wide range, and even if the temperature of the heated hot air is raised, the airflow itself sways, It won't get too hot and won't hurt your hair. This is the same as using a drier in a hand while shaking it when drying hair using a conventional drier.

Next, another embodiment using the airflow jet nozzle 20 will be described. FIG. 15 is an explanatory diagram when the airflow ejection nozzle 20 of the present invention is used in the hair washing and drying apparatus 100. As shown in the figure, the hair washing and drying apparatus 100 includes a drying chamber 105 for drying hair and the airflow ejection nozzle 20.
And a heating device 101 and an air flow generation device 102. The air flow generated by the air flow generation device 102 is heated by the heating device 101, and the heated air flow is supplied to the air flow ejection nozzle 20. The airflow is ejected toward the drying chamber 105. In this way, after washing the hair with a washing nozzle (not shown), it is possible to dry the wet hair in a short time. It can be expected to have a water drop blowing effect, a drying effect, and further downsizing, weight reduction, and cost reduction of the device.

Next, another embodiment using the airflow jet nozzle 20 will be described. FIG. 16 is an explanatory diagram when the airflow ejection nozzle 20 of the present invention is used as a human body drying device,
By providing the airflow jet nozzle 20 in the bathroom 108 having the bathtub 109, the human body after bathing is dried. In this way, the user can use the remote controller 107 after bathing.
It is possible to dry the human body just by operating the etc., and it is not necessary to do a troublesome act such as wiping off water droplets on the whole body with a towel after bathing, and it is also suitable for bathing for the elderly There is. Furthermore, since the human body can be dried in the warm bathroom 108 that is warmed by the hot water in the bathtub after bathing, the body will not be cooled due to the temperature difference due to the entrance and exit of the room after bathing. The burden on

The embodiments of the present invention have been described above.
The present invention is not limited to the above examples and embodiments, and it goes without saying that the present invention can be carried out in various modes without departing from the scope of the present invention.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an overall configuration of an embodiment in which a blower device having an airflow jet nozzle of the present invention is applied to a hand dryer.

FIG. 2 is an explanatory diagram illustrating details of an airflow jet nozzle.

FIG. 3 is an explanatory diagram for explaining the ejection body 30 in a vertical cross-sectional view.

FIG. 4 is an explanatory diagram for explaining the external appearance of the ejection body 30.

FIG. 5 is an explanatory diagram for explaining the behavior of the force receiving portion 32 after the airflow has flowed into the swirl chamber 25 and the state of the force applied to the force receiving portion 32 over time.

FIG. 6 is an explanatory diagram illustrating a state in which the air flow ejection nozzle 20 ejects an air flow.

FIG. 7 is an explanatory diagram for explaining how the hand is dried using the hand dryer 1.

FIG. 8 is an explanatory diagram illustrating the details of the airflow jet nozzle 60.

FIG. 9 is an explanatory diagram illustrating a cross section of the grip body 50.

FIG. 10 is an explanatory diagram for explaining the ejection body 70 in a vertical cross-sectional view.

FIG. 11 is an explanatory diagram for explaining the ejection body 70 as viewed from the outside.

FIG. 12: Airflow ejection nozzle 20 using ejection body 70
FIG. 6 is an explanatory diagram illustrating a state of ejecting an air flow.

FIG. 13 is a diagram showing a device for cleaning a human body local part 8 provided with an air flow ejection nozzle 20
It is explanatory drawing explaining the mode which is used for 1 and performs the drying of a local part.

FIG. 14: The airflow jet nozzle 20 is attached to the hand dryer 9
It is an explanatory view explaining how to dry hair using 0.

FIG. 15 shows the air flow jetting nozzle 20 for the hair washing and drying device 1
It is explanatory drawing explaining the mode that hair is dried using 00.

FIG. 16 is an explanatory diagram illustrating a state in which an airflow jet nozzle 20 is provided in a bathroom to dry a human body.

[Explanation of symbols]

1 ... Hand dryer 3 ... Casing 5 ... Airflow generator 6 ... Control device 7 ... Drying room 9 ... Filter 11 ... Hand detection device 12 ... Intake passage 14 ... Blower 16 ... Motor 17 ... fan 20 ... Airflow jet nozzle 23 ... Swirling chamber inflow path 25 ... Swirl chamber 26 ... Taper guide part 27 ... Opening 27 30 ... Spout 31 ... Pipeline 32 ... Force receiving part 33 ... Pipe wall 35 ... Spout 37 ... Step 40 ... slit 41 ... Tapered conduit 50 ... gripping body 55 ... Bending part 56 ... Fixed part 58 ... Grip 60 ... Airflow jet nozzle 64 ... Holds down 66 ... Taper guide part 70 ... Spout 75 ... Spout 80 ... Nozzle arm 81 ... Human body local drying device 90 ... Hand dryer 91 ... Grip 92 ... Heater 93 ... Filter 95 ... fan 96 ... switch 100 ... Hair washing and drying device 101 ... Heating device 102 ... Airflow generator 105 ... Drying room 107 ... remote control 108 ... Bathroom 109 ... Bathtub

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) E03D 9/08 E03D 9/08 L

Claims (21)

[Claims] 1. An airflow jet nozzle having a jet port for jetting a supplied airflow from the jet port, wherein the airflow jet nozzle is incorporated in the inflow chamber into which the air flow flows, A swingable jetting body having a jetting portion provided with the jetting outlet, an indoor portion that is continuous with the jetting portion and located in the inflow chamber, and a conduit that guides an air flow in the inflowing chamber to the jetting outlet. An inflow mechanism that guides the airflow into the inflow chamber so that the airflow flowing into the inflow chamber causes a swirl flow around the indoor portion along the inner peripheral wall surface of the inflow chamber. An airflow jet nozzle, wherein a flow velocity difference is generated in the swirl flow around the indoor region, and a force generated based on the flow velocity difference is exerted on the indoor region. 2. The airflow jet nozzle according to claim 1, wherein the jet body is formed with a pipeline wall penetrating the pipeline in a jet direction of the jet body, and an elongated opening in a circumferential direction of the indoor portion. And a slit communicating with the pipe wall, the airflow jet nozzle. 3. The airflow ejection nozzle according to claim 2, wherein the wall of the conduit wall on the side of the jet outlet has a small diameter toward the jet outlet, of the wall surface which the slit communicates with and opens. An air jet nozzle characterized by having a tapered shape. 4. The airflow ejection nozzle according to claim 1, further comprising a guide portion that regulates an inclination angle of the ejection body. 5. The airflow ejection nozzle according to claim 1, wherein the inflow mechanism has a nozzle conduit that is eccentrically communicated with the inflow chamber on a peripheral wall of the inflow chamber. 6. The airflow ejection nozzle according to claim 1, wherein the ejection body incorporated in the inflow chamber includes the ejection portion as a columnar body having a diameter smaller than that of the indoor portion.
Airflow jet nozzle. 7. The airflow ejection nozzle according to claim 1, wherein the ejection body has a step portion at a connecting portion between the ejection portion and the indoor portion, and the ejection portion penetrates the inflow chamber. An airflow ejection nozzle having an opening, the periphery of which is a seat for the stepped portion of the ejection member. 8. The airflow ejection nozzle according to claim 7, wherein at least one of the step portion and the opening peripheral edge is made of metal. 9. The airflow ejection nozzle according to claim 1, wherein the ejection member is configured to incline the indoor portion with respect to the inflow chamber when there is no inflow of airflow into the inflow chamber. There is an airflow jet nozzle. 10. The airflow ejection nozzle according to claim 1, wherein the ejection body causes the revolution while rotating about the axis of the indoor portion. . 11. The airflow ejection nozzle according to claim 10, wherein the ejection body has the conduit extending to the ejection port of the ejection site, which is inclined with respect to a rotation axis of the ejection body. , Air flow jet nozzle. 12. The airflow ejection nozzle according to claim 1, wherein the airflow ejection nozzle includes a flexible gripping body that grips the ejection body,
An airflow jet nozzle that closes the inflow chamber with the grip body. 13. The airflow jet nozzle according to claim 12, wherein the gripping body has a tubular gripping portion into which the jetting body is fitted and which grips the jetting body, and flows into the inflow chamber. An air flow ejection nozzle that causes the pressure of the generated air flow to act on the outer wall of the cylindrical grip portion. 14. The airflow ejection nozzle according to claim 12, wherein the grasping body has an outwardly convex bent portion around a grasping portion of the ejection body. 15. An air blower for jetting an air flow, comprising a plurality of the air jet nozzles according to any one of claims 1 to 14. 16. A blower for blowing off water adhering to a human body, wherein the blower comprises the airflow jet nozzle according to any one of claims 1 to 14, and an airflow generator for generating an airflow. And an airflow generating device that supplies the generated airflow to the airflow ejection nozzle and ejects the airflow. 17. The air blower according to claim 16, wherein the air blower is provided in a box, the box is a drying chamber into which a hand is inserted, and the airflow is opposed to the drying chamber. An air blower having an ejection nozzle, wherein a hand is inserted into the drying chamber to blow off water droplets attached to the hand. 18. The air blower according to claim 17, wherein
The air blower nozzles provided so as to face each other have different directions of a swirl flow introduced around the indoor portion of the jet body. 19. The air blower according to claim 16, wherein:
The blower is provided in the rear part of the toilet bowl, and after flushing the washing water toward the human body local part to wash the local part, blows air toward the human body local part, and blows off water droplets attached to the human body local part. A blower. 20. The air blower according to claim 16, wherein:
The air blower has a grip portion that is gripped by a hand, and blows air toward the hair on the human head to blow off water droplets adhering to the hair. 21. The air blower according to claim 16, wherein the air blower has a heating device that heats the air flow generated by the air flow generation device, An air blower, characterized in that the generated airflow is heated by the heating device, supplied to the airflow ejection nozzle, and ejected.