JP6082724B2 - Spray nozzle and humidifier equipped with the spray nozzle - Google Patents

Description

  The present invention relates to a spray nozzle and a humidifier equipped with the spray nozzle. The spray nozzle generates a mist by mixing and injecting air into water, and generates a large amount of fine mist with a small amount of air and a water droplet at the nozzle. This is a spray nozzle that prevents water from sticking and does not cause dripping.

  Conventionally, in all fields including industrial and agricultural uses, a humidifier has been used to maintain the required humidity. The humidity is sprayed from a spray nozzle (hereinafter abbreviated as a nozzle) equipped in the humidifier. Keep trying. From the humidifying nozzle, a gas-liquid mixed liquid obtained by mixing a gas made of pressurized air and a liquid made of water is sprayed at a required pressure, and water droplets to be sprayed are atomized. Thus, in order to atomize the spray from the nozzle and widen the spray range, it is necessary to supply pressurized air, so that it is required to consume energy and suppress the energy consumption. In addition, it is also required to prevent water droplets ejected from the nozzle from adhering to the periphery of the nozzle and causing dripping.

As a humidifier of this type, the present applicant has disclosed in JP-A-5-79664 that the water stored in the water storage chamber of the humidifier is reduced as much as possible and fresh water is always supplied from the water pipe. The present invention provides a humidifier that can suppress the generation and growth of bacteria by 100%.
As shown in FIG. 10, the humidifier is equipped with a spray nozzle nozzle 110 having a pair of opposed nozzle holes 100 and 101, and mists sprayed from the nozzle nozzles 100 and 101 arranged opposite to each other are caused to collide with each other. , Water droplets are atomized.

  Although this humidifier has various advantages, there is room for improvement. That is, when the gas-liquid mixture is sprayed from the nozzles 100 and 101, if the amount of pressurized air to be supplied is reduced to reduce the energy consumption, the fog becomes rough and water droplets are likely to adhere to the periphery of the nozzle. If the water droplets adhering to the peripheral edges of the nozzle holes 100 and 101 are left without being removed, there is a problem that the water droplets drop off.

JP-A-5-79664

  The present invention is intended to solve the above problem, while reducing the supply amount of pressurized air and generating a large amount of fine mist to save energy, making it difficult for water droplets to adhere to the periphery of the nozzle hole, It is an object of the present invention to provide a spray nozzle that does not cause dripping from the periphery of the nozzle hole, and a humidifier equipped with the spray nozzle.

In order to solve the above problems, as a first invention,
A first injection hole disposed at the tip of the injection side on the central axis of the nozzle body, and a branch passage that projects outwardly and inclines from both sides of the injection side end surface of the nozzle body provided with the first injection port. includes a bent portion which is inclined in the opposite direction so as to face each other toward the extension line of the front Symbol central axis to the tip of該分branch, a second injection port and the third injection port to pair toward disposed at the distal end of the bent portion Prepared,
The second injection port and the third injection port is circular, while to inject the second injection port and the third injection port or et water and gas-liquid mixed fluid of air, said first injection port is the oval or elliptical shape, the An ellipse or an ellipse has a long dimension in a direction orthogonal to the linear direction connecting the second nozzle hole and the third nozzle hole arranged opposite to each other, and only air is injected from the first nozzle hole,
Before SL and the air injected from the first injection port is the gas-liquid mixed fluid and collisions injected from the second injection port and the third injection port at the center axis atomized water droplets, and the second, the third injection port There is provided a spray nozzle characterized in that water droplets to be sprayed are blown away by air sprayed from the first nozzle hole.

  In the present invention, a mist of a gas-liquid mixed fluid obtained by mixing water and pressure air ejected from the second and third nozzles arranged opposite to each other is caused to collide with the pressure air ejected from the first nozzle and ultrasonic waves are generated at the time of the collision. To generate a large amount of fine mist. And, the first nozzle hole is an elliptical or elliptical nozzle, the second by the pressure air injected from the first nozzle, the water droplets sprayed from the third nozzle is blown away in the direction perpendicular to the spray direction, the second, Water droplets are blown away in a direction away from the periphery of the third nozzle hole. In this way, water droplets ejected from the second and third nozzle holes can be prevented from adhering to the periphery of the nozzle holes by the pressure air ejected from the first nozzle hole, and the occurrence of dripping from the second and third nozzle edges can be prevented.

  Compared with the case where the mist sprayed from the two oppositely arranged nozzles shown in FIG. 10 of the conventional example collides, the pressure air injected from the first nozzle located at the central axis of the nozzle body collides with the first. By colliding with the mist from the second and third nozzle holes at a single point, the water droplets can be made finer than the conventional example, and a large amount of mist can be generated. In other words, a large amount of fine mist can be generated by ultrasonic vibration by colliding pressure air from three directions without increasing the pressure of the pressure air injected from the first to third nozzles or increasing the injection amount of the pressure air. Can be generated. As a result, the amount of pressurized air to be supplied can be reduced, the amount of energy consumption can be reduced, and water droplets can be prevented from adhering to the peripheral edges of the second and third nozzles that inject water as described above.

The second and third nozzles both externally mix the pressure air injected from the annular air nozzle surrounding the central water nozzle, around the water jetted from the circular central water nozzle ,
And when the air quantity injected from the second nozzle hole and the third nozzle hole is the same, and the air quantity injected from the second nozzle hole and the third nozzle hole is less than 10 NL / min, It is preferable that the amount of air injected from the first nozzle is larger than the amount of air injected from the three nozzles.
On the other hand, when the amount of air ejected from the second nozzle hole and the third nozzle hole is 10 NL / min or more, the amount of air ejected from the first nozzle hole is equal to or less than the amount of air ejected from the second nozzle hole and the third nozzle hole. It is preferable.
In addition, as described above, the first nozzle hole has an oval or elliptical shape with a long dimension in a direction orthogonal to the linear direction connecting the second nozzle hole and the third nozzle hole arranged to face each other.
As described above, the first nozzle hole has an elliptical or elliptical shape with the length extending in the direction of extension of the central axis of the nozzle body, that is, the direction orthogonal to the injection direction of the second nozzle hole and the third nozzle hole.

  As described above, the gas-liquid mixed fluid consisting of water and pressure air, that is, the second and third nozzles that inject mist, mix water and pressure air externally to suppress clogging at the nozzle. doing. In addition, as described above, in the elliptical or elliptical first injection hole that injects only the pressure air, as described above, the first direction is orthogonal to the straight line connecting the second and third injection holes arranged opposite to each other in the longitudinal direction, that is, the first The second and third injection holes are orthogonal to the injection direction. This prevents water droplets ejected from the second and third nozzles from being blown back to the periphery of the second and third nozzles by the pressurized air from the first nozzle, and is attached to the periphery. Blowing away water droplets from the periphery of the nozzle hole reliably prevents water droplets from adhering.

The relationship between the hole length (HL) in the long dimension of the first nozzle hole and the hole width (HW) in the short dimension is such that the hole length / hole width (HL / HW) is 1.2 or more and less than 2.0, And,
The first, second, and third nozzle holes are provided at the top surface portion of each conical injection section provided in the nozzle body, and the first nozzle is a base end of the cone injection section of the second and third nozzle holes. It is preferable to protrude toward the collision point side from a straight line connecting the portions.
As described above, when the first nozzle hole is arranged close to the second and third nozzle holes, the compressed air is strongly collided with the center of the spray from the two opposite directions to effectively generate the ultrasonic wave, and the atomization is performed. The present inventor has found from experiments that it is possible to accelerate and generate a large amount of fog.

Further, the angle formed by the center line of the first nozzle hole and the center line of the second nozzle hole with the collision point as a fulcrum is equal to the angle formed by the center line of the first nozzle hole and the center line of the third nozzle hole. In this case, the angle θ1 is set to 90 ° to 40 °, preferably 70 ° to 60 °.
It is preferable that the distance L1 between the second and third nozzle holes and the collision point is equal, and the distance L2 between the first nozzle hole and the collision point is L1 × 1.0 to 2.0.

The spray sprayed from the second nozzle hole and the third nozzle hole is caused to collide with the angle, and the second nozzle hole and the third nozzle hole are caused to collide by injecting the pressure air from the first nozzle hole at equal angular intervals toward the collision point. And the mist injected from the 2nd, 3rd nozzle hole, and the pressure air from the 1st nozzle hole can collide equally, and atomization of the water droplet during spraying can be performed equally. In addition, according to the present invention, it is possible to further atomize water droplets by causing ultrasonic waves to be generated at the time of collision by causing the spray from two directions and the pressurized air from one central direction to collide at one point at the angle. The person discovered by experiment.
In particular, spraying at an angle of 90 ° to 40 ° from the second and third nozzle holes toward the central axis of the nozzle body, and colliding with pressure air injected from the first nozzle on the central axis of the center, The present inventor has found through experiments that atomization is promoted by ultrasonic waves generated at the time of collision and a large amount of fog can be generated.
When the angle formed by the spray from the second and third nozzles is increased, the spray distance is shortened and water droplets are likely to adhere to the periphery of the nozzle, but the first nozzle is an ellipse or an ellipse, The water droplets from the third nozzle hole are not blown back to the second and third nozzle holes by the pressure air injected from the first nozzle hole, and are blown away in the direction away from each other, so that the water droplets adhere to the peripheral edges of the second and third nozzle holes. Can be prevented.

The gas-liquid mixed fluid jetted from the second and third nozzles is a gas-liquid mixed fluid jetted from the second and third nozzles with a water pressure of 0 to 0.5 MPa and an air pressure of 0 to 1.0 MPa. The air / water ratio (air / water) is preferably 200 to 2000.
In addition, as described above, when the amount of air supplied from the second and third nozzles is less than 10 NL / min, the amount of air supplied from the first nozzle is larger than the amount of air supplied from the second and third nozzles. A lot
When the amount of air supplied from the second and third nozzles is 10 NL / min or more, the amount of air supplied from the first nozzle is preferably equal to or less than the amount of air supplied from the second and third nozzles. .

In the spray nozzle according to the present invention, one main gas passage provided in the nozzle body is branched into three branch gas passages on the injection side and is distributed to the first, second and third nozzles, and is provided in the nozzle body. A branched liquid passage that branches one liquid passage or one main liquid passage into two on the injection side is circulated to the second and third nozzles.
The pressurized air supplied to the gas passage is supplied from a compressor, and the water supplied to the liquid passage is preferably tap water or pure water.

As described above, in the case of a spray nozzle in which the amount of air supplied from the second and third nozzle holes is 10 NL / min or more and the spray amount is large, water droplets are unlikely to adhere to the second and third nozzle edges, and Even if the amount of air supplied from the first nozzle is reduced, the amount of fog generated at the collision point is large, so the amount of pressure air injected from the first nozzle is more than the amount of pressure air injected from the second and third nozzles. It is preferable to reduce the energy consumption and cost.
On the other hand, in the case of a small spray nozzle in which the amount of air supplied from the second and third nozzles is as small as less than 10 NL / min, water droplets easily adhere to the peripheral edges of the second and third nozzles, and the first nozzle Since it is preferable to increase the amount of air supplied from the first injection port to increase the amount of fog generated at the collision point, the amount of pressure air injected from the first injection port is larger than the amount of pressure air injected from the second and third injection ports. It is preferable to do.
The adjustment of the amount of air supplied to the first, second, and third nozzles is, for example, a branch gas passage that communicates with the first nozzle with a large spray nozzle and a small spray nozzle, the first, second, and second nozzles. The cross-sectional areas of the three nozzles are different.

  As a second invention, a humidifier provided with the spray nozzle of the first invention is provided. The humidifier accommodates a float in a casing forming a water storage chamber, removably attaches a plurality of the spray nozzles at intervals to the outer periphery of a lid member that closes the opening of the casing, The lid member is provided with a gas passage for supplying air to the spray nozzles and a liquid passage for supplying water. The lid member is provided with a water stop valve connected to a water stop lever that opens and closes as the float moves up and down, and the water stop valve is configured to open and close a hemispherical valve seat with a hemispherical rubber component. It is preferable that

As described above, in the spray nozzle according to the first aspect of the present invention, the mist of the gas-liquid mixed fluid composed of water and air ejected from the second and third nozzles is on the extension line of the central axis of the first nozzle for ejecting the pressure air. By colliding at one collision point, water droplets being sprayed can be atomized with ultrasonic waves, and a large amount of mist can be generated. Thus, since a lot of fog is generated, the amount of pressurized air can be reduced, and energy saving can be achieved.
And since the 1st nozzle hole which injects pressure air is made into an ellipse or an ellipse shape, it does not blow back the water droplet injected from the 2nd, 3rd nozzle hole, but a water droplet adheres to the peripheral edge of this 2nd, 3rd nozzle hole. It is possible to prevent water dripping from the peripheral edges of the second and third nozzle holes.

  Moreover, since the humidifier of 2nd invention equips with the spray nozzle of said 1st invention, it can reduce the energy which driving | operation of a humidifier can reduce, and it can be set as the humidifier by which running cost was reduced. . In addition, the humidifier can reliably prevent dripping of water from the nozzle nozzle.

It is a top view of the spray nozzle of the 1st invention. It is a front view of the spray nozzle. It is a bottom view of the spray nozzle. It is a side view of the spray nozzle. (A) is a front view which shows the dimension and angle of the said spray nozzle, (B) is a schematic sectional drawing which shows the gas channel | path and liquid channel | path of the said spray nozzle. The insert sleeve which provides the 1st nozzle hole of the said spray nozzle is shown, (A) is sectional drawing, (B) is BB sectional drawing of (A), (C) is a left view of (A). It is a table | surface which shows the numerical value of each part of the Example of the said spray nozzle. The humidifier of 2nd invention is shown, (A) is a top view, (B) is sectional drawing, (C) is drawing which shows the injection state of the fluid from a 1st, 2nd, 3rd nozzle. It is a perspective view which shows the usage example of the said humidifier. It is drawing which shows a prior art example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 6 show a spray nozzle according to the first embodiment.
The spray nozzle 1 (hereinafter abbreviated as “nozzle 1”) is provided with a first injection nozzle 3 at the tip of the injection side on the central axis (S1) of the nozzle body 2 made of a resin molded product, A second nozzle 4 and a third nozzle 5 are provided at positions projecting from the nozzle 3 to the injection side (X). The second nozzle hole 4 and the third nozzle hole 5 are symmetric with respect to the central axis (S1) as a support shaft.

  Specifically, branch portions 2d and 2e are provided so as to project outwardly from both sides of the ejection side end surface 2s of the nozzle body 2 to the ejection side, and the distal ends of the respective branch portions 2d and 2e are on an extension line of the central axis (S1). There are provided refracting portions 2f and 2g that are refracted in the opposite direction of the diameter reduction. Conical portions 2f1 and 2g1 are provided at the injection-side tips of the refracting portions 2f and 2g, the second nozzle 4 is provided at the tip of one refracting portion 2f, and the third nozzle 5 is provided at the tip of the other refracting portion 2g. ing.

As shown in FIG. 5 (B), two liquid passages 7A and 7B through which water flows and a gas passage 8 through which pressurized air flows are provided in the nozzle body 2. The two liquid passages 7A and 7B communicate with a liquid supply port 7a that opens on the base end surface 2k of the nozzle body 2, and the liquid passage 7A reaches the second injection port 4 from the branch portion 2d through the refracting portion 2f. The liquid passage 7B reaches the third nozzle hole 5 from the branch part 2e through the refracting part 2g.
The gas passage 8 branches the main gas inflow passage 8b communicated with the gas supply port 8a in three directions, the branch passage 8c communicating with the first injection port 3, the branch passage 8d communicating with the second injection port 4, and the third injection port 5 Is provided with a branch passage 8e communicating with the. Further, as shown in FIG. 3, the gas supply port 8 a is located at the center of the base end surface 2 k of the nozzle body 2 and has a filter 9 attached thereto.
From the second nozzle hole 4 and the third nozzle hole 5, water and pressure air respectively supplied from the liquid passage 7 and the gas passage 8 are externally mixed by injecting pressure air from the outer periphery around water. It is ejected as a liquid mixture fluid (mist).

Specifically, the insert sleeve 10 shown in FIG. 6 is fitted to the outer cylinder portion 2h provided at the center of the injection side of the nozzle body 2, and the tip portion of the insert sleeve 10 provided with the first injection port 3 is the outer cylinder. It protrudes from the part 2h, and the pressure air is injected from the first nozzle 3.
Also, insert sleeves 11 and 12 shown in FIGS. 8B and 8C are inserted into the outer cylindrical portion formed of the refracting portions 2f and 2g, and the second nozzle hole 4 and the third nozzle hole are inserted at the tips of the insert sleeves 11 and 12, respectively. Water injection ports 4 a and 5 a that open at the center of 5 are provided. A pressure air passage is provided between the outer peripheral surfaces of the insert sleeves 11 and 12 and the inner peripheral surfaces of the refracting portions 2f and 2g, and the water injection ports 4a and 5a that open at the center of the second and third injection ports 4 and 5 are provided. Pressure air injection ports 4b and 5b are provided on the outer periphery. As the configuration, water and pressurized air are injected from the second and third nozzles 4 and 5 without being mixed, and externally mixed as shown in FIG. , K2.

  The insert sleeve 10 provided with the first injection hole 3 for injecting the pressurized air has an elongated cylindrical shape, and is provided with a central gas flow path 10 a communicating with the branch passage 8 c of the nozzle body 2. A conical injection side portion 10b having a circular arc surface at the tip is provided on the injection side of the insert sleeve 10, a diametric groove 10c is cut out at the tip of the conical injection side portion 10b, and a central portion of the groove 10c is formed as a central gas. A first injection hole 3 having an oval shape shown in FIG. 6C is provided in communication with the flow path 10a.

As shown in FIG. 1, the first nozzle hole 3 having the elliptical shape is an ellipse having a long dimension in a direction Y <b> 2 orthogonal to the linear direction Y <b> 1 that connects the second nozzle hole 4 and the third nozzle hole 5 that face each other. Yes. An elliptical shape may be used instead of the ellipse.
Further, as shown in FIG. 2, a first nozzle hole is formed from a straight line L5 connecting a conical portion 2f1 in which the second nozzle hole 4 is provided on the top surface portion and a base end portion of the cone portion 2g1 in which the third nozzle port 5 is provided on the top surface portion. 3 is projected to the collision point (P) side.

  Further, as shown in FIG. 6C, the relationship between the hole length (HL) in the long dimension and the hole width (HW) in the short dimension of the oval first injection hole 3 is the hole length / hole width. (HL / HW) is 1.2 or more and less than 2.0.

  As shown in FIG. 5 and FIG. 8C, the mists K1 and K2 jetting oppositely from the second nozzle hole 4 and the third nozzle hole 5 at the collision point (P) on the extension line of the central axis (S1) of the nozzle body 2 Colliding. And the pressure air injected from the 1st nozzle 3 located in a center axis line (S1) is made to collide with the center part of fog K1, K2 which injects oppositely at the said collision point (P).

  The center axis (S2) of the second nozzle hole 4 and the center axis (S3) of the third nozzle hole 5 are inclined toward the extension line on the injection side (X) of the center axis (S1) of the nozzle body 2, and the second nozzle 4. The mists K1 and K2 jetting oppositely from the third nozzle hole 5 are caused to collide at a collision point (P) on an extension line of the central axis (S1) of the nozzle body 2. At the collision point (P), the pressure air ejected from the first nozzle 3 is collided with the mists K1 and K2 of the gas-liquid mixed fluid ejected from the second nozzle 4 and the third nozzle 5.

  An angle θ1 between the center axis (S1) and the center axis (S2) of the second nozzle 4 with the collision point (P) as a fulcrum is 40 ° to 90 °. The angle between the central axis (S1) and the central axis (S3) of the third nozzle hole 5 with the collision point (P) as a fulcrum is the same as the angle θ1. Therefore, the angle θ2 formed by the central axes (S2) and (S3) is set to 80 ° to 180 °.

  Further, the distance L1 from the tip of the second and third nozzle holes 4 and 5 to the collision point (P) is shorter than the distance L2 from the tip of the first nozzle 3 to the collision point (P). The relationship between the distances L1 and L2 is a range of distance L2 = L1 × 1.0 to 2.0.

  In the nozzle 1, the gas-liquid mixed fluid ejected from the second and third nozzle holes 4 and 5 has a water pressure of 0 to 0.5 MPa and a pressure air of 0 to 1.0 MPa. The air-water ratio (air / water) of the gas-liquid mixed fluid to be ejected (fog K1, K2) is set to 200-2000.

In the nozzle 1 of the present invention having the above-described configuration, the pressure air injected from the first nozzle 3 and the gas-liquid mixed fluid (mists K1, K2) injected from the second and third nozzles 4, 5 are supplied to the nozzle body 2 and Colliding at one collision point (P) on the extension line of the central axis (S1) of the first nozzle hole 3. The mist from the opposing direction of the second and third nozzle holes 4 and 5 is collided, and the pressurized air from the first nozzle hole 3 is injected into the center of the collision part to collide with the ultrasonic wave at the collision point (P). Vibration is generated, water droplets in the mist mixed by the ultrasonic vibration can be further atomized, and a large amount of mist can be generated.
Moreover, since the 1st nozzle hole 3 which injects pressure air is made into an ellipse shape, and the water droplet injected from the 2nd nozzle hole 4 and the 3rd nozzle hole 5 is blown away in the orthogonal direction with the injection direction, the pressure air from the 1st nozzle hole 3 It is possible to prevent water droplets ejected from the second and third nozzle holes 4 and 5 from being blown back and adhering to the peripheral edges of the second and third nozzle holes 4 and 5 due to the collision.

  In this way, the mists K1 and K2 that collide and mix by injecting only the pressure air from the first nozzle 3 having the oval shape toward the collision points of the mists K1 and K2 that are injected from the second and third nozzles. Can be mixed with the pressure air from the first nozzle 3 to atomize the fog water droplets to increase the amount of fog generated, and the water droplets adhere to the peripheral edges of the second and third nozzles 4 and 5 for jetting the water droplets. Can be reliably prevented.

The nozzle 1 of the present invention is provided with a large nozzle that generates a large amount of mist, a medium-sized nozzle that generates less mist than the large nozzle, and a small nozzle.
The amount of pressure air ejected from the second and third nozzles 4 and 5 is less than 10 NL / min, a small nozzle, 10 to 20 NL / min is a medium nozzle, and 20 NL / min or more is a large nozzle.

In the small nozzle, the total amount of pressurized air supplied to the nozzle 1 is less than 30 NL / min, and the total amount of water supplied is less than 3.3 L / hr. In the small nozzle, the amount of pressure air Qa3 injected from the first injection port 3 is made larger than the amount of pressure air Qa1 injected from the second injection port 4 and the amount of pressure air Qa2 injected from the third injection port 5.
In the medium-sized nozzle, the total amount of pressurized air supplied to the nozzle 1 is 30 NL / min or more and less than 40 NL / min, and the total amount of water supply is 2.5 L / hr or more and less than 4 L / hr. In the medium nozzle, the pressure air amounts Qa3, Qa1, and Qa2 injected from the first, second, and third nozzle holes 3, 4, and 5, respectively, are set to substantially the same amount.
In the large nozzle, the total amount of pressurized air supplied to the nozzle 1 is 40 NL / min or more, and the total amount of water supply is 4 L / hr or more. In the large nozzle, the pressure air amount Qa3 injected from the first injection port 3 is made smaller than the pressure air amount Qa1 injected from the second injection port 4 and the pressure air amount Qa2 injected from the third injection port 5.

Specifically, as shown in the table of FIG. 7, the amount of pressurized air and the amount of water supplied by the small nozzle, the medium nozzle, and the large nozzle are different.
As a result of creating a nozzle set as shown in FIG. 7 and performing a spraying experiment, the amount of fog generated at the collision point (P) can be secured to a required amount, and water droplets on the peripheral edges of the second and third nozzles 4 and 5 can be secured. Adhesion could be reliably prevented.

That is, in the small nozzle, by increasing the injection amount of the pressure air from the first injection port 3 than the injection amount of the pressure air from the second and third injection ports 4, 5, the generation of fog in the collision part can be increased. In addition, it was confirmed that the adhesion of water droplets to the second and third nozzle holes 4 and 5 can be reliably prevented by the pressure air ejected from the first nozzle hole 3.
On the other hand, in a large nozzle, since the injection amount of the pressurized air from the second and third nozzle holes 4 and 5 is large, the injection amount of the pressurized air from the first nozzle hole 3 is made smaller than that of the second and third nozzle holes 4 and 5. However, it has been confirmed that the amount of fog generated at the collision portion can be increased and adhesion of water droplets to the peripheral edges of the second and third nozzle holes 4 and 5 can be prevented. In particular, by reducing the amount of pressurized air injected from the first nozzle 3, the total amount of pressurized air does not become excessive, and the energy cost can be suppressed.

8 and 9 show an embodiment of the humidifier 20 provided with the nozzle 1.
In addition, the structure of a humidifier is not limited to the said embodiment, What is necessary is just to provide the nozzle 1 of 1st invention.

  The humidifier 20 includes a casing 21, a lid member 22, and a nozzle 1 that is attached to and detached from the lid member 22. Since the nozzle 1 uses the nozzle of the first embodiment, description of the nozzle structure is omitted.

The humidifier 20 includes a cover member 22 that closes the upper surface opening of the casing 21, and four nozzles 1 are attached to the outer periphery of the cover member 22 with an interval of 90 degrees. The number of nozzles attached to the humidifier is not limited and may be one.
The casing 21 has a substantially cylindrical shape in which a float 25 is accommodated, and an upper surface opening thereof is closed by the lid member 22.

  The casing 21 has a peripheral wall 21a inclined toward the bottom wall 21b in a diameter reducing direction, and an inner surface of the bottom wall 21b is inclined downward toward the center, and a liquid reservoir 26 is provided at the lowermost end of the center. In addition, ribs 21d are provided in the inner surface of the peripheral wall 21a so as to project in the circumferential direction, and the float 25 moves up and down along the inner peripheral surface of the rib 21d.

The float 25 has a shape with a slight gap between the rib 21d and the bottom wall 21b, and a through hole 25a that opens up and down is provided at the center of the float 25 corresponding to the liquid reservoir 26 at the lowermost end. Yes.
A liquid absorption pipe 22e protruding downward is provided at the center of the lid member 22, the liquid absorption pipe 22e is passed through the through hole 25a of the float 25, and the lower end is opened to the liquid reservoir 26. Is sucking. The upper end of the liquid suction pipe 22e is branched in four directions, and the branch passage 22f communicates with the liquid passage 7 of the nozzle 1.
A gas supply pipe connecting part 22g is provided on the upper side corresponding to the liquid suction pipe 22e at the center part of the cover member 22 and its lower end is branched in four directions. The branch path 22h is connected to the gas path 8 of the nozzle 1. Communicate.

A water supply pipe connecting part 22i for connecting the water supply pipe 40 is provided on one side of the lid member 22, and a housing part 22j for the water stop valve 29 is provided below the water supply pipe connecting part 22i. A hemispherical valve seat 22k is provided between the water supply pipe connecting portion 22i and the accommodating portion 22j. In addition, you may interpose a strainer in the said water supply pipe connection part 22i.
The water stop valve 29 housed in the housing portion 22j includes a rubber hemispherical valve body 29a that opens and closes the valve seat 22k, and the lower end of the water stop valve 29 is fixed to the water stop lever 30.

  The water stop lever 30 is a straight lever, and a fulcrum 30a at one end thereof is rotatably attached to the lower end of the accommodating portion 22j, and a protruding portion 30b provided upward in the vicinity of the fulcrum 30a is provided as the water stop lever. The valve 29 is in contact with the lower end. A hole 30c is formed in the center of the water stop lever 30 to allow the liquid absorption pipe 22e to pass therethrough. The water stop lever 30 is disposed along the upper surface of the float 25, and a contact provided downward on the protruding end of the water stop lever 30. A portion 30d is provided.

The downward contact portion 30d of the water stop lever 30 is in contact with the upper surface of the float 25. In this state, the water stop valve 29 having its lower end fixed to the water stop lever 30 is lowered and the valve seat 22k is opened to enter a water supply state. . When a certain amount of water is supplied into the water storage chamber 32, the float 25 is raised, and the contact portion 30d is pushed up, the water stop valve 29 is also raised to close the valve seat 22k and stop water supply. At that time, the push-up force of the water stop valve 29 is strengthened by the principle of leverage.
When the spraying operation is performed, water is sucked up from the liquid suction pipe 22e, and when the amount of water in the water storage chamber 32 is reduced, the float 25 is lowered, the water stop valve 29 is also lowered, the valve seat 22k is opened, and the water storage chamber 32 is opened. The liquid is supplied to As described above, the liquid (water) stored in the water storage chamber 32 is small in volume, and fresh water is constantly supplied.

  The gas supply pipe connecting portion 22g that communicates with the gas supply pipe 50 is provided at the center of the lid member 22, and the lower end of the gas supply pipe connecting portion 22g is branched into four directions to provide a branch passage 22h. It communicates with the passage 8.

  As shown in FIG. 9, the humidifier 20 to which the nozzle 1 is attached at an interval of 90 degrees is suspended from the pressure air introduction pipe 51 at a required interval. Further, the water supply pipe 40 is suspended from the water introduction pipe 41 with a required interval.

Next, the spraying operation of the humidifier 20 will be described below.
The pressure air supplied to the pressure air branch passage 22 h provided in the lid member 22 flows into the gas passage 8 of the nozzle 1. On the other hand, the negative pressure of the pressure air flowing into the branch passage 22h is introduced into the branch passage 22f, water is sucked up from the center of the bottom of the water storage chamber 32 by the liquid suction pipe 22e, and liquid is supplied to the liquid passage 7 of the nozzle 1 through the branch passage 22f. Inflow.

  In the nozzle 1, as described above, the liquid injected from the centers of the second and third nozzle holes 4 and 5 is externally mixed by injecting the pressure air from the outer periphery, and atomized by the shearing action of the pressure air. The pressure air is injected from the first nozzle 3. In this way, the fluid jetted from three directions is collided at the external collision point (P) to generate ultrasonic waves, further micronize and homogenize the droplets, and generate a large amount of fog. The pressure and air pressure are set in the range of 0 to 1 MPa, and the water pressure is set in the range of 0 to 0.5 MPa.

As described above, at the time of spraying, water is sucked up from the liquid reservoir 26 at the center of the bottom of the water storage chamber 32. Since water flows from the outer periphery of the float 25 toward the tapered bottom center, the old liquid is sequentially sprayed. When the amount of liquid accumulated in the water storage chamber 32 decreases and the float 25 descends, the water stop lever 30 descends to lower the water stop valve 29, and the valve seat 22k opens to introduce water into the water storage chamber 32. To do.
When water is introduced into the water storage chamber 32 and the float 25 rises, the tip of the water stop lever 30 is pushed up as described above, and the water stop valve 29 rises to close the valve seat 22k. Since the amount of water stored in this way is small, the float 25 constantly moves up and down during spraying, operates the water stop lever 30 and the water stop valve 29 to intermittently supply water, and supplies new water to the water storage chamber 32. Yes.
Further, the float 25, the water stop lever 30 and the water stop valve 29 are operated stably and accurately. That is, the float 25 moves up and down straight, with the liquid guide tube 22e at the center and the outer periphery guided by the guide rib 21d of the casing.

  In this way, the humidifier 20 can always spray fresh water, and by mounting the nozzle 1, it can generate a large amount of mist even if the amount of pressurized air supplied is reduced, thus reducing running costs. Can be achieved.

DESCRIPTION OF SYMBOLS 1 Nozzle 2 Nozzle main body 3 1st nozzle 4 4 2nd nozzle 5 3rd nozzle 7 Liquid channel 8 Gas channel 20 Humidifier P Collision point

Claims (6)

A first injection hole disposed at the tip of the injection side on the central axis of the nozzle body, and a branch passage that projects outwardly and inclines from both sides of the injection side end surface of the nozzle body provided with the first injection port. includes a bent portion which is inclined in the opposite direction so as to face each other toward the extension line of the front Symbol central axis to the tip of該分branch, a second injection port and the third injection port to pair toward disposed at the distal end of the bent portion Prepared,
The second injection port and the third injection port is circular, while to inject the second injection port and the third injection port or et water and gas-liquid mixed fluid of air, said first injection port is the oval or elliptical shape, the An ellipse or an ellipse has a long dimension in a direction orthogonal to the linear direction connecting the second nozzle hole and the third nozzle hole arranged opposite to each other, and only air is injected from the first nozzle hole,
Before SL and the air injected from the first injection port is the gas-liquid mixed fluid and collisions injected from the second injection port and the third injection port at the center axis atomized water droplets, and the second, the third injection port A spray nozzle characterized in that water droplets to be sprayed are blown away by air sprayed from the first nozzle hole. The second and third nozzles are both externally mixed with air injected from an annular air nozzle surrounding the central water nozzle, around the water jetted from the circular central water nozzle,
When the amount of air ejected from the second and third nozzle holes is the same, and the amount of air ejected from the second and third nozzle holes is less than 10 NL / min, the second and third nozzle holes The spray nozzle according to claim 1, wherein the amount of air ejected from the first nozzle is larger than the amount of air ejected from the first nozzle. The amount of air injected from the second nozzle hole and the third nozzle hole is the same, and when the amount of air injected from the second nozzle hole and the third nozzle hole is 10 NL / min or more, the amount of air injected from the first nozzle hole is Less than or equal to the amount of air injected from the second and third nozzle holes, and
The relationship between the hole length (HL) in the long dimension of the first nozzle hole and the hole width (HW) in the short dimension is such that the hole length / hole width (HL / HW) is 1.2 or more and less than 2.0, And,
The first, second, and third nozzle holes are provided at the top surface portion of each conical injection section provided in the nozzle body, and the first nozzle is a base end of the cone injection section of the second and third nozzle holes. The spray nozzle of Claim 1 or Claim 2 which protrudes in the said collision point side from the straight line which connects a part. The angle formed by the center line of the first nozzle hole and the center line of the second nozzle hole with the collision point as a fulcrum is equal to the angle formed by the center line of the first nozzle hole and the center line of the third nozzle hole. The angle θ1 is 90 ° to 40 °,
The distance L1 between the second and third nozzle holes and the collision point is equal, and the distance L2 between the first nozzle hole and the collision point is L1 × 1.0 to 2.0. The spray nozzle according to claim 3.   A humidifier comprising the spray nozzle according to any one of claims 1 to 4.   A float is accommodated in a casing forming a water storage chamber, and a plurality of spray nozzles are detachably attached to the outer periphery of a lid member that closes the opening of the casing, and each of the spray nozzles is attached to the lid member. The humidifier according to claim 5, wherein a gas passage for supplying air to the spray nozzle and a liquid passage for supplying water are provided.

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